DUST COLLECTOR

[0001] The present application claims priority to and incorporates by reference the entire contents of Japanese Patent Application No. 2025-014354 filed in Japan on January 30, 2025.

[0002] Techniques disclosed in the present teachings relate to a dust collector.

[0003] An electric vacuum cleaner as disclosed in JP H01-209035 A is known in a technical field related to dust collectors. In JP H01-209035 A, a bag-shaped filter is disposed inside a dust collecting case. Air that has passed through the bag-shaped filter passes through a ventilation hole provided immediately above the bag-shaped filter.

[0004] In JP H01-209035 A, when the bag-shaped filter expands, the bag-shaped filter may block the ventilation hole. A blocked ventilation hole may decrease the suction performance of the electric vacuum cleaner.

[0005] One non-limiting object of the present teachings is to inhibit a decrease in performance of a dust collector.

[0006] In one aspect of the present teachings, a dust collector may include: a body housing having a housing suction port; a motor assembly that is disposed inside the body housing, that includes a fan and a motor that rotates the fan, and that generates suction force at the housing suction port; and a closure inhibiting portion that inhibits the housing suction port from being blocked. The closure inhibiting portion includes a wall portion disposed at least partially around the housing suction port and a ventilation portion provided in the wall portion.

[0007] According to the techniques disclosed in the present teachings, a decrease in performance of a dust collector is inhibited.

[0047] In one or more embodiments, a dust collector may include: a body housing having a housing suction port; a motor assembly that is disposed inside the body housing, that includes a fan and a motor that rotates the fan, and that generates suction force at the housing suction port; and a closure inhibiting portion that inhibits the housing suction port from being blocked. The closure inhibiting portion includes a wall portion disposed at least partially around the housing suction port and a ventilation portion provided in the wall portion.

[0048] In the above-described configuration, providing the closure inhibiting portion inhibits the housing suction port from being blocked. Therefore, a decrease in suction performance of the dust collector is inhibited. The closure inhibiting portion includes the wall portion disposed at least partially around the housing suction port. For example, even when the dust collecting pack expands, the contact between the dust collecting pack and the wall portion inhibits the housing suction port from being blocked by the dust collecting pack. The ventilation paths that lead to the housing suction port are secured by providing the ventilation portion in the wall portion. Therefore, a decrease in suction performance of the dust collector is inhibited.

[0049] In one or more embodiments, the wall portion may include a surrounding rib provided so as to surround the housing suction port and protruding toward an outside of the body housing.

[0050] In the above-described configuration, the surrounding rib is provided so as to surround the housing suction port, so that the housing suction port is effectively inhibited from being blocked by the dust collecting pack even when the dust collecting pack expands.

[0051] In one or more embodiments, the ventilation portion may include a recess provided in the surrounding rib.

[0052] In the above-described configuration, the ventilation path that leads to the housing suction port is secured by providing the recess in the wall portion. Therefore, a decrease in suction performance of the dust collector is inhibited.

[0053] In one or more embodiments, a width of the recess may be larger than the depth of the recess.

[0054] In the above-described configuration, the ventilation path that leads to the housing suction port is appropriately secured.

[0055] In one or more embodiments, the dust collector may include a lattice rib disposed in the housing suction port.

[0056] In the above-described configuration, the lattice rib inhibits foreign substances from passing through the housing suction port.

[0057] In one or more embodiments, the lattice rib may protrude toward the outside of the body housing.

[0058] In the above-described configuration, the lattice rib is formed so as to expand toward the outside of the body housing, which enables air to flow through a ventilation path in the lattice rib from a lateral direction of the lattice rib. Therefore, air can smoothly flow through the ventilation path in the lattice rib. That is, air can smoothly flow into the housing suction port.

[0059] In one or more embodiments, a protrusion amount of the surrounding rib may be larger than a protrusion amount of the lattice rib.

[0060] In the above-described configuration, the protrusion amount of the surrounding rib is larger than the protrusion amount of the lattice rib, so that the housing suction port is effectively inhibited from being blocked by the dust collecting pack even when the dust collecting pack expands.

[0061] In one or more embodiments, the dust collector may include a filter disposed on the housing suction port.

[0062] In the above-described configuration, when air suctioned into the housing suction port contains dust, the filter collects the dust. Therefore, air containing dust is inhibited from being suctioned into the housing suction port.

[0063] In one or more embodiments, the filter may be disposed so as to cover the housing suction port from the outside of the body housing.

[0064] In the above-described configuration, the filter can effectively collect dust contained in air.

[0065] In one or more embodiments, the wall portion may include a surrounding rib provided so as to surround the housing suction port and protruding toward the outside of the body housing. The filter may be disposed inside the surrounding rib.

[0066] In the above-described configuration, the housing suction port is effectively inhibited from being blocked by the dust collecting pack, and air containing dust is effectively inhibited from being suctioned into the housing suction port.

[0067] In one or more embodiments, the ventilation portion may overlap at least a part of a side surface of the filter.

[0068] In the above-described configuration, air that has passed through the ventilation portion flows from the side surface of the filter to the inside of the filter, and is then suctioned into the housing suction port. That is, the ventilation path that leads to the housing suction port is secured by the ventilation portion overlapping at least a part of the side surface of the filter.

[0069] In one or more embodiments, an outer dimension of the filter may be larger than an outer dimension of the housing suction port.

[0070] In the above-described configuration, air containing dust is effectively inhibited from being suctioned into the housing suction port.

[0071] In one or more embodiments, the dust collector may include a fixing rib that is disposed at least partially around the housing suction port, that protrudes toward an outside of the body housing, and that fixes the filter.

[0072] In the above-described configuration, the housing suction port and the filter are positioned.

[0073] In one or more embodiments, the dust collector may include a tank that stores dust. The body housing may be coupled to the tank such that the housing suction port faces internal space of the tank.

[0074] In the above-described configuration, a decrease in performance of suctioning from the tank to the body housing is inhibited.

[0075] In one or more embodiments, the dust collecting pack may be disposed in the internal space of the tank. The closure inhibiting portion may inhibit the housing suction port from being blocked by the dust collecting pack.

[0076] In the above-described configuration, a decrease in suction performance of the dust collector is inhibited even when the dust collecting pack disposed in the internal space of the tank expands.

[0077] Although embodiments according to the present disclosure will be described below with reference to the drawings, the present disclosure is not limited to the embodiments. Components of the embodiments to be described below can be appropriately combined. Furthermore, some components are not used in some cases.

[0078] In the embodiment, the positional relations between units (portions) will be described using terms of "front", "rear", "left", "right", "up", and "down". These terms indicate relative positions or directions with respect to the center of a dust collector.

[0079] FIG. 1 illustrates a dust collector 1 according to an embodiment as viewed from upper left front. FIG. 2 illustrates the dust collector 1 according to the embodiment as viewed from upper right rear. FIG. 3 illustrates the dust collector 1 according to the embodiment as viewed from front. FIG. 4 illustrates the dust collector 1 according to the embodiment as viewed from rear. FIG. 5 illustrates the dust collector 1 according to the embodiment as viewed from left. FIG. 6 illustrates the dust collector 1 according to the embodiment as viewed from right. FIG. 7 illustrates the dust collector 1 according to the embodiment as viewed from above. FIG. 8 is a vertical cross-sectional view illustrating the dust collector 1 according to the embodiment, and is a cross-sectional arrow view taken along line A-A in FIG. 7. FIG. 9 is a vertical cross-sectional view illustrating a part of the dust collector 1 according to the embodiment, and is a cross-sectional arrow view taken along line B-B in FIG. 7. FIG. 10 is a perspective cross-sectional view illustrating the dust collector 1 according to the embodiment, and is a cross-sectional arrow view taken along line C-C in FIG. 1. FIG. 11 is a perspective cross-sectional view illustrating the dust collector 1 according to the embodiment, and is a cross-sectional arrow view taken along line D-D in FIG. 1. FIG. 12 is a horizontal cross-sectional view illustrating the dust collector 1 according to the embodiment, and is a view obtained by viewing FIG. 10 from above.

[0080] The dust collector 1 includes a suction tube 2, a tank 3, wheels 4, a body housing 5, latches 6, a motor assembly 7, a filter 8, a motor cover 9, a battery mounting portion 10, a filter unit 12, a switch button 13, a handle 14, and a controller 15.

[0081] The suction tube 2 suctions air. The suction tube 2 is disposed at a front portion of the tank 3. The suction tube 2 includes a tank suction port 16. The tank suction port 16 is disposed at a front end of the suction tube 2. The tank suction port 16 faces forward. The tank suction port 16 is disposed at the front portion of the tank 3. The tank suction port 16 communicates (is in fluid communication) with the inside of the body housing 5 via the tank 3. A dust collecting hose (not illustrated) is connected to the suction tube 2. The tank 3 stores dust suctioned through the tank suction port 16. Dust is suctioned through the tank suction port 16 together with air to flow into the internal space of the tank 3. In the embodiment, a dust collecting pack 17 is disposed inside the tank 3. The dust collecting pack 17 is connected to the suction tube 2. The dust collecting pack 17 has a bag shape. The dust collecting pack 17 may be made of paper or cloth. The dust collecting pack 17 stores the dust suctioned through the tank suction port 16. Air can pass through the dust collecting pack 17.

[0082] The wheels 4 are mounted at a lower portion of the tank 3. The wheels 4 support the tank 3 in a movable manner. The wheels 4 include two swivel wheels 4F and two fixed wheels 4R. The two swivel wheels 4F are mounted at a lower front portion of the tank 3. The two fixed wheels 4R are mounted at a lower rear portion of the tank 3. The tank 3 moves on a surface to be cleaned via the wheels 4.

[0083] A user of the dust collector 1 can move the dust collector 1 forward on the surface to be cleaned by dragging the dust collector 1 forward via the dust collecting hose.

[0084] The tank 3 supports the body housing 5. The body housing 5 is disposed above the tank 3. The latches 6 fix the tank 3 and the body housing 5 to each other. The latches 6 are provided respectively at a left portion and a right portion of the tank 3.

[0085] FIG. 13 is an exploded perspective view illustrating the tank 3 and the body housing 5 according to the embodiment. The body housing 5 is detachable from the tank 3. The tank 3 and the body housing 5 are fixed to each other with the latches 6. The body housing 5 and the tank 3 can be separated from each other by releasing the fixing of the latches 6. The tank 3 has an opening 18. The opening 18 of the tank 3 is provided at an upper end of the tank 3. The body housing 5 is coupled to the tank 3 so as to cover the opening 18 of the tank 3.

[0086] FIG. 14 illustrates the tank 3 according to the embodiment as viewed from above. The dust collecting pack 17 is disposed inside the tank 3. The tank 3 includes a stay 61 on which a base of the dust collecting pack 17 is attached. The dust collector 1 includes a non-mounting preventing device 80 that prevents the dust collecting pack 17 from not being mounted on the stay 61. When the base of the dust collecting pack 17 has not been mounted on the stay 61, the non-mounting preventing device 80 prevents the body housing 5 from being coupled to the tank 3.

[0087] The non-mounting preventing device 80 includes a non-mounting detecting lever 81. When the stay 61 pivots from a detachment position to an attachment position with the base of the dust collecting pack 17 being mounted on the stay 61, the non-mounting detecting lever 81 pivots from a non-mounting position to a mounting position. In contrast, when the stay 61 pivots from the detachment position to the attachment position with the base of the dust collecting pack 17 not being mounted on the stay 61, the non-mounting detecting lever 81 does not pivot from the non-mounting position to the mounting position, and stays at the non-mounting position. When the non-mounting detecting lever 81 is positioned at the non-mounting position, the body housing 5 is prevented from being coupled to the tank 3. Note that JP 2021-053273 A discloses an example of the non-mounting preventing device 80.

[0088] The tank 3 includes an earth 71 that releases static electricity retained in at least a part of the dust collector 1. A lower end of the earth 71 protrudes downward from the lower surface of the tank 3.

[0089] FIG. 15 is an exploded perspective view illustrating the body housing 5 according to the embodiment. The body housing 5 includes a tank cover 19 and a cowling 20. The tank cover 19 is disposed above the tank 3. The tank cover 19 covers the opening 18 of the tank 3. The tank cover 19 covers the opening 18 provided at the upper end of the tank 3 from above the tank 3. The cowling 20 is disposed above the tank cover 19. Internal space of the body housing 5 is formed between the tank cover 19 and the cowling 20. The motor assembly 7 and the motor cover 9 are disposed inside the body housing 5. The cowling 20 forms the internal space of the body housing 5 between the cowling 20 and the tank cover 19. The motor assembly 7 and the motor cover 9 are disposed in the internal space of the body housing 5.

[0090] FIG. 16 illustrates the tank cover 19 according to the embodiment as viewed from upper left front. FIG. 17 is an exploded perspective view illustrating the tank cover 19 according to the embodiment. The tank cover 19 includes a plate portion 19A and a plurality of screw boss portions 19B. The plate portion 19A covers the opening 18 of the tank 3. The screw boss portions 19B protrude upward from the upper surface of the plate portion 19A. The tank cover 19 and the cowling 20 are fixed by a plurality of screws 21. Screw openings 19C are provided at upper ends of the screw boss portions 19B. Shafts of the screws 21 are inserted into the screw openings 19C. The screws 21 are inserted from lower ends of the screw boss portions 19B into the screw boss portions 19B, and then inserted into screw holes provided in the cowling 20 via the screw openings 19C.

[0091] The latches 6 are pivotably supported on the tank 3. The body housing 5 includes hook portions 22 on which the latches 6 are hooked. The hook portions 22 are provided respectively at a left portion and a right portion of the tank cover 19.

[0092] A bumper 23 is provided on the tank cover 19. The bumper 23 is fixed on a peripheral edge of the tank cover 19. The bumper 23 has an annular shape. The bumper 23 is made of rubber. The bumper 23 is fixed to the peripheral edge of the tank cover 19 by, for example, insert molding. When the dust collector 1 collides with an object around the dust collector 1, the bumper 23 absorbs shock acting on the dust collector 1 and the object. When the dust collector 1 collides with an object around the dust collector 1, the bumper 23 inhibits damage to the object. The bumper 23 has an outer peripheral surface 23A, a lower surface 23B, and an upper surface 23C. The outer peripheral surface 23A can come in contact with an object around the dust collector 1. The lower surface 23B is in contact with the upper end of the tank 3. The upper surface 23C is in contact with a lower end of the cowling 20. The boundary between the tank cover 19 and the tank 3 is sealed by contact between the lower surface 23B of the bumper 23 and the upper end of the tank 3. The boundary between the tank cover 19 and the cowling 20 is sealed by contact between the upper surface 23C of the bumper 23 and the lower end of the cowling 20. The bumper 23 functions as a shock absorbing member, functions as a seal member that seals the boundary between the tank cover 19 and the tank 3, and functions as a seal member that seals the boundary between the tank cover 19 and the cowling 20. The bumper 23 inhibits air in the internal space of the tank 3 from leaking to the surroundings of the dust collector 1. The bumper 23 inhibits air in the internal space of the body housing 5 from leaking to the surroundings of the dust collector 1.

[0093] The body housing 5 includes an accessory housing portion 24 (first accessory housing portion) provided at a side portion of the cowling 20. The accessory housing portion 24 is disposed to the left of the battery mounting portion 10 at a side portion of the cowling 20 of the body housing 5. The accessory housing portion 24 can hold accessories of the dust collector 1. The accessory housing portion 24 houses at least some of the accessories of the dust collector 1. The accessories of the dust collector 1 include a pipe portion directly or indirectly coupled to the suction tube 2. Examples of the accessories of the dust collector 1 include a dust collecting hose, an extendable pipe, a suction nozzle, a sash nozzle, and a free nozzle. The accessory housing portion 24 can hold a pipe portion of an accessory. When the accessory is a suction nozzle, the accessory housing portion 24 holds a pipe portion of the suction nozzle. As illustrated in FIGS. 4, 5, and 7, a recess 20A is provided at a left rear portion of the side portion of the cowling 20. The recess 20A is provided so as to be recessed from the outer peripheral surface of the cowling 20 toward the center of the cowling 20. The cowling 20 includes a rod portion 20B disposed inside the recess 20A. The rod portion 20B protrudes upward from the bottom surface of the recess 20A. The accessory housing portion 24 includes the rod portion 20B disposed in the recess 20A. As illustrated in FIG. 4, the accessory housing portion 24 can hold the suction nozzle by, for example, inserting the pipe portion of the suction nozzle over the rod portion 20B from above. Furthermore, as illustrated in FIGS. 5 and 7, an accessory housing portion 240 (first accessory housing portion) is provided on a left front side of the accessory housing portion 24 at a side portion of the body housing 5. The accessory housing portion 240 has a recess 20H provided in the side portion of the cowling 20. The accessory housing portion 240 can hold the accessory by inserting the accessory into the recess 20H from above the recess 20H.

[0094] The tank 3 includes accessory housing portions 25 (second accessory housing portions) provided at a rear portion of the tank 3. The accessory housing portions 25 are provided rearward of the battery mounting portion 10 in the tank 3. At least a part of each of the accessory housing portions 25 is provided rearward of a battery pack 11 mounted on the battery mounting portion 10. The accessory housing portions 25 are provided at a left rear portion and a right rear portion of the tank 3. The accessory housing portions 25 are provided to the left and right of the battery mounting portion 10. Similarly to the accessory housing portion 24, the accessory housing portions 25 can hold the accessories of the dust collector 1. Each of the accessory housing portions 25 includes an arc-shaped member 3A that protrudes rearward from the rear portion of the tank 3. The accessory housing portions 25 can hold the accessories by inserting pipe portions of the accessories into the arc-shaped members 3A from above the arc-shaped members 3A.

[0095] The motor assembly 7 is disposed inside the body housing 5. The body housing 5 has a housing suction port 26. The housing suction port 26 is provided at a central portion of the tank cover 19. The motor assembly 7 is disposed above the housing suction port 26. The motor assembly 7 generates suction force at the housing suction port 26. The tank suction port 16 communicates with the inside of the body housing 5 via the housing suction port 26. Suction force is generated at the housing suction port 26, so that suction force is generated at the tank suction port 16. The motor assembly 7 generates suction force at the tank suction port 16 via the housing suction port 26.

[0096] The motor assembly 7 is disposed at a central portion of the body housing 5 in the left-right direction. As will be described later, the motor assembly 7 includes a motor 35 including a rotor 35B that rotates about a rotation axis AX. The position of the center of the body housing 5 may coincide with the position of the rotation axis AX of the motor 35 in the left-right direction. The motor assembly 7 is disposed at the central portion of the body housing 5 in the front-rear direction. Note that, in the front-rear direction, the rotation axis AX of the motor 35 may be disposed forward of the center of the body housing 5.

[0097] The motor assembly 7 is disposed rearward of the tank suction port 16. The motor assembly 7 is disposed forward of the battery mounting portion 10. In the left-right direction, the position of the tank suction port 16, the position of at least a part of the motor assembly 7, and the position of at least a part of the battery mounting portion 10 coincide with each other.

[0098] The filter 8 is disposed so as to cover the housing suction port 26. The filter 8 covers the housing suction port 26 from below. The filter 8 collects dust from air that flows from the tank 3 into the body housing 5 via the housing suction port 26.

[0099] FIG. 18 is an exploded perspective view illustrating the body housing 5 and the motor cover 9 according to the embodiment. The motor cover 9 is disposed so as to cover the motor assembly 7 inside the body housing 5. The motor cover 9 includes a cylindrical portion 9A and a top plate portion 9B. The cylindrical portion 9A is disposed around the motor assembly 7. The top plate portion 9B is connected to an upper end of the cylindrical portion 9A. The cylindrical portion 9A includes a cover exhaust port 9C having a slit shape and extending upward from a lower end of the cylindrical portion 9A. The motor assembly 7 and the motor cover 9 are disposed above the tank cover 19. The tank cover 19 supports the motor assembly 7 and the motor cover 9.

[0100] The battery mounting portion 10 is provided at a side portion of the body housing 5. The battery mounting portion 10 is provided at a side portion of the cowling 20. The battery mounting portion 10 is connected to the battery pack 11. The battery pack 11 is mounted on the battery mounting portion 10. In the embodiment, the battery pack 11 has the rated voltage of 36 V.

[0101] FIG. 19 illustrates a state, as viewed from upper right rear, in which the battery pack 11 according to the embodiment is detached from the battery mounting portion 10 and the filter unit 12 is detached from the body housing 5. FIG. 20 illustrates a state, as viewed from rear, in which the battery pack 11 according to the embodiment is detached from the battery mounting portion 10 and the filter unit 12 is detached from the body housing 5.

[0102] The battery mounting portion 10 is provided at the central portion of the body housing 5 in the left-right direction. The battery mounting portion 10 is provided at the rear portion of the body housing 5 in the front-rear direction. The cowling 20 has a battery recess 20C recessed forward from a rear portion of the cowling 20. The battery mounting portion 10 is disposed inside the battery recess 20C. The battery mounting portion 10 is disposed on the rear surface of the battery recess 20C facing rearward.

[0103] As illustrated in FIG. 20, the battery mounting portion 10 includes a pair of guide rails 10A and a plurality of terminals 10B disposed between the guide rails 10A. The guide rails 10A extend in the up-down direction. The pair of guide rails 10A are disposed in the left-right direction with a distance therebetween.

[0104] The battery pack 11 is attached to and detached from the battery mounting portion 10. The battery pack 11 supplies electric power to an electric device mounted on the dust collector 1 in a state of being mounted on the battery mounting portion 10. The battery pack 11 is a general-purpose battery that can be used as a power source of various electric devices. The battery pack 11 can be used as a power source of a power tool. The battery pack 11 can be used as a power source of an electric device other than a power tool. The battery pack 11 can be used as a power source of a dust collector different from the dust collector 1 according to the embodiment. The battery pack 11 includes a rechargeable battery that can be recharged. The battery pack 11 includes a lithium-ion battery. The battery mounting portion 10 has a structure equivalent to a battery mounting portion of a power tool.

[0105] The user of the dust collector 1 can mount the battery pack 11 on the battery mounting portion 10 and detach the battery pack 11 from the battery mounting portion 10. The user can mount the battery pack 11 on the battery mounting portion 10 by inserting the battery pack 11 into the battery mounting portion 10 from above. The battery pack 11 is mounted on the battery mounting portion 10 by moving downward while being guided by the guide rails 10A. Terminals of the battery pack 11 are electrically connected to the terminals 10B of the battery mounting portion 10 by mounting the battery pack 11 on the battery mounting portion 10. The user of the dust collector 1 can detach the battery pack 11 from the battery mounting portion 10 by moving the battery pack 11 upward.

[0106] FIG. 21 illustrates the filter unit 12 according to the embodiment. The filter unit 12 includes a filter 27 and a filter case 28 that holds the filter 27. Air discharged from the body housing 5 passes through the filter 27. The filter 27 collects dust from the air discharged from the body housing 5. The filter 27 is a high-performance filter such as a high efficiency particulate air (HEPA) filter or an ultra low penetration air (ULPA) filter.

[0107] The filter case 28 includes a frame portion 28A, a plate portion 28B, and a hook portion 28C. The frame portion 28A surrounds the filter 27. The plate portion 28B is disposed on the outer side of the body housing 5 relative to the filter 27. The hook portion 28C is provided at an upper portion of the plate portion 28B. A plurality of housing exhaust ports 28D is provided in the plate portion 28B. The air that has passed through the filter 27 passes through the housing exhaust ports 28D.

[0108] The filter 27 is fixed to the filter case 28 having the housing exhaust ports 28D. The filter 27 is fixed to the housing exhaust ports 28D of the filter case 28. The filter 27 is integrated with the filter case 28.

[0109] A filter unit mounting portion 29 is provided at a side portion of the body housing 5. The filter unit mounting portion 29 is disposed to the right of the battery mounting portion 10 at a side portion of the cowling 20. The filter unit mounting portion 29 is disposed rearward of the motor assembly 7 and to the right of the battery mounting portion 10 at a side portion of the cowling 20. The filter unit 12 is mounted on the filter unit mounting portion 29. The filter unit 12 has an opening (exhaust port) provided in the body housing 5. The filter 27 of the filter unit 12 is disposed in the filter unit mounting portion 29.

[0110] The filter unit 12 is attached to and detached from the filter unit mounting portion 29 of the body housing 5. An engaging portion is provided at least partially around the filter unit mounting portion 29. The hook portion 28C is hooked on the engaging portion. The engaging portion is provided above the filter unit mounting portion 29 at a side portion of the cowling 20. The filter unit 12 is mounted on the filter unit mounting portion 29 by hooking the hook portion 28C on the engaging portion of the cowling 20. The filter 27 is mounted on the filter unit mounting portion 29 by mounting the filter unit 12 on the filter unit mounting portion 29. The filter 27 is disposed adjacent to the battery mounting portion 10 at a side portion of the body housing 5 by mounting the filter unit 12 on the filter unit mounting portion 29. In the embodiment, the filter 27 is disposed to the right of the battery mounting portion 10. By releasing the engagement between the hook portion 28C and the cowling 20, the filter unit 12 can be separated from the body housing 5, and the filter unit 12 is detached from the filter unit mounting portion 29.

[0111] The switch button 13 is disposed at a front portion of the body housing 5. The motor 35 of the motor assembly 7 is switchable between a drive state (mode) and a stop state (mode) by manually operating the switch button 13.

[0112] The handle 14 is pivotably supported at an upper portion of the body housing 5. The handle 14 is disposed rearward of the switch button 13. The user of the dust collector 1 can carry the dust collector 1 by gripping the handle 14 with his/her hand.

[0113] The controller 15 includes a computer. The controller 15 outputs a control signal for controlling electric devices installed in the dust collector 1. The electric devices include the motor assembly 7. The controller 15 outputs a control signal for controlling the motor 35 of the motor assembly 7. An operation signal generated by manually operating the switch button 13 is transmitted to the controller 15. The controller 15 changes a state (mode) of the motor 35 of the motor assembly 7 between a drive state (mode) and a stop state (mode) based on the operation signal from the switch button 13. The controller 15 includes a control substrate on which a plurality of electronic components is mounted. Examples of the electronic components mounted on the control substrate include a processor such as a central processing unit (CPU), a nonvolatile memory such as a read only memory (ROM) and a storage, a volatile memory such as a random access memory (RAM), a transistor, a capacitor, and a resistor.

[0114] FIG. 22 illustrates the motor cover 9 according to the embodiment as viewed from upper left front. FIG. 23 illustrates the motor assembly 7 and the motor cover 9 according to the embodiment as viewed from upper left front. FIG. 23 illustrates the motor cover 9 with virtual lines. FIG. 24 illustrates the motor assembly 7 and the motor cover 9 according to the embodiment as viewed from below.

[0115] The motor cover 9 is disposed so as to cover the motor assembly 7. The motor cover 9 includes the cylindrical portion 9A and the top plate portion 9B. The cylindrical portion 9A is disposed around the motor assembly 7. The top plate portion 9B is connected to the upper end of the cylindrical portion 9A. The cylindrical portion 9A is integrated with the top plate portion 9B. The cylindrical portion 9A has the cover exhaust port 9C extending upward from the lower end of the cylindrical portion 9A. The cover exhaust port 9C has a slit shape elongated in the up-down direction.

[0116] The dust collector 1 includes a holding member 30, a motor support member 31, and a cover support member 32. The holding member 30 is mounted on at least a part of the motor assembly 7. The motor support member 31 is mounted on at least a part of the motor assembly 7. The cover support member 32 is mounted on at least a part of the motor cover 9. Furthermore, the dust collector 1 includes rotation restricting members 33 mounted on the cylindrical portion 9A of the motor cover 9.

[0117] FIG. 25 is an exploded view illustrating the motor assembly 7, the motor cover 9, the holding member 30, the motor support member 31, and the cover support member 32 according to the embodiment as viewed from upper left front. FIG. 26 is an exploded view illustrating the motor assembly 7, the motor cover 9, the holding member 30, the motor support member 31, and the cover support member 32 according to the embodiment as viewed from upper right rear. FIG. 27 is a perspective cross-sectional view illustrating the motor assembly 7, the motor cover 9, the holding member 30, the motor support member 31, and the cover support member 32 according to the embodiment, and is a cross-sectional arrow view taken along line E-E in FIG. 22. FIG. 28 is a perspective cross-sectional view illustrating the motor assembly 7, the motor cover 9, the holding member 30, the motor support member 31, and the cover support member 32 according to the embodiment, and is a cross-sectional arrow view taken along line F-F in FIG. 22. FIG. 29 is a vertical end view illustrating the motor assembly 7, the motor cover 9, the holding member 30, the motor support member 31, and the cover support member 32 according to the embodiment, and is a view obtained by viewing FIG. 28 from front.

[0118] FIG. 29 illustrates a detailed cross section of the motor assembly 7. Note that FIGS. 8 to 12, 27, and 28 illustrate cross sections obtained by simplifying the motor assembly 7. As illustrated in FIG. 29, the motor assembly 7 includes a fan 34, the motor 35, and a motor case 36. The motor 35 rotates the fan 34. The motor case 36 houses the fan 34 and the motor 35.

[0119] The motor 35 is an inner rotor type brushless motor. The motor 35 generates power for rotating the fan 34. The motor 35 includes a stator 35A, the rotor 35B, and a rotor shaft 35C. The rotor 35B is disposed inside the stator 35A. The rotor shaft 35C is fixed to the rotor 35B. The rotor shaft 35C extends in the up-down direction. The rotation axis AX of the rotor shaft 35C extends in the up-down direction. A bearing 35D and a bearing 35E support in a rotatable manner. The bearing 35D supports an upper portion of the rotor shaft 35C in a rotatable manner. The bearing 35E supports a lower portion of the rotor shaft 35C in a rotatable manner.

[0120] The fan 34 is fixed to the rotor shaft 35C. The fan 34 is rotated by rotational force generated by the motor 35. Rotation of the rotor shaft 35C of the motor 35 rotates the fan 34. The fan 34 generates suction force at the tank suction port 16 via the housing suction port 26. The fan 34 is fixed to the lower end of the rotor shaft 35C. The fan 34 is a centrifugal fan.

[0121] The motor case 36 houses the fan 34 and the motor 35 inside the body housing 5. The motor case 36 supports the stator 35A of the motor 35. The motor case 36 supports each of the bearing 35D and the bearing 35E. The motor case 36 includes: a cylindrical portion 36A disposed so as to surround the rotation axis AX; a top plate portion 36B connected to the upper end of the cylindrical portion 36A; and an annular portion 36C connected to the lower end of the cylindrical portion 36A. The cylindrical portion 36A is fixed to the top plate portion 36B by a screw(s). The cylindrical portion 36A is fixed to the annular portion 36C by an adhesive.

[0122] The motor case 36 has a motor intake port 36D and motor exhaust ports 36E. The motor intake port 36D is provided at the lower end of the motor case 36. The motor intake port 36D is provided inside the annular portion 36C. The motor exhaust ports 36E are provided on the outer peripheral surface of the cylindrical portion 36A of the motor case 36. The motor exhaust ports 36E are each provided at an upper portion of the outer peripheral surface of the cylindrical portion 36A. The motor exhaust ports 36E are provided so as to penetrate the cylindrical portion 36A from the inner peripheral surface to the outer peripheral surface thereof at the upper portion of the cylindrical portion 36A.

[0123] The motor case 36 is an outer shell member of the motor assembly 7. The outer peripheral surface of the motor assembly 7 disposed around the rotation axis AX of the motor 35 means an outer peripheral surface 36F of the cylindrical portion 36A of the motor case 36. One end surface of the motor assembly 7 connected to the upper end of the outer peripheral surface of the motor assembly 7 means an upper surface of the top plate portion 36B of the motor case 36. The other end surface of the motor assembly 7 connected to the lower end of the outer peripheral surface of the motor assembly 7 means a lower surface 36H of the annular portion 36C of the motor case 36.

[0124] As illustrated in FIGS. 8 and 9, the motor assembly 7 is disposed above the tank cover 19. The motor assembly 7 is supported on the tank cover 19 such that the motor intake port 36D faces the housing suction port 26. The fan 34 rotates to generate suction force at the housing suction port 26, which causes air to flow from the housing suction port 26 into the motor intake port 36D. The air that has flowed into the motor intake port 36D flows through the inside of the motor case 36, and is then discharged from the motor exhaust ports 36E to the outside of the motor case 36.

[0125] The holding member 30 is mounted on at least a part of the motor assembly 7. The holding member 30 is in contact with at least a part of the motor assembly 7. In the embodiment, the holding member 30 is mounted on an upper portion of the motor assembly 7. The holding member 30 is in contact with the upper portion of the motor assembly 7. The holding member 30 reduces transmission of vibration from the motor assembly 7. The holding member 30 reduces or suppresses vibration generated in the motor assembly 7 from being transmitted to an object around the motor assembly 7. The holding member 30 reduces transmission of vibration from the motor assembly 7 to the body housing 5. The holding member 30 reduces transmission of vibration from the motor assembly 7 to the motor cover 9. The holding member 30 is an elastic member. The holding member 30 is a flexible member. The holding member 30 is a vibration-proof member. In the embodiment, the holding member 30 is made of rubber.

[0126] The holding member 30 has a first surface 301 and a second surface 302. The first surface 301 is in contact with at least a part of the outer peripheral surface of the motor assembly 7. The second surface 302 is in contact with at least a part of an end surface of the motor assembly 7. The outer peripheral surface of the motor assembly 7 is disposed around the rotation axis AX of the motor 35. The end surface of the motor assembly 7 is connected to an end of the outer peripheral surface of the motor assembly 7. In the embodiment, the end surface of the motor assembly 7 with which the holding member 30 is in contact is an upper end surface connected to the upper end of the outer peripheral surface of the motor assembly 7. The first surface 301 is in contact with an upper portion of the outer peripheral surface 36F of the motor assembly 7. The second surface 302 is in contact with an upper surface 36G, which is an upper end surface of the motor assembly 7.

[0127] The holding member 30 is a cap-shaped member that covers the upper portion of the motor assembly 7. The holding member 30 has a recess 303 that covers the end surface and a part of the outer peripheral surface of the motor assembly 7. The inner surface of the recess 303 includes the first surface 301 and the second surface 302. The holding member 30 includes a peripheral wall portion 30A and a ceiling portion 30B. The peripheral wall portion 30A is disposed around the cylindrical portion 36A. The ceiling portion 30B is connected to the upper end of the peripheral wall portion 30A. The ceiling portion 30B has a ceiling surface facing the top plate portion 36B. The ceiling surface of the ceiling portion 30B faces downward. The recess 303 is defined by the inner peripheral surface of the peripheral wall portion 30A and the ceiling surface of the ceiling portion 30B. The recess 303 covers the upper surface 36G of the motor assembly 7 and the upper portion of the outer peripheral surface 36F. The inner peripheral surface of the recess 303 (inner peripheral surface of peripheral wall portion 30A) includes the first surface 301. The ceiling surface of the recess 303 (ceiling surface of ceiling portion 30B) includes the second surface 302. The first surface 301 faces inward in the radial direction of the rotation axis AX. The second surface 302 faces downward.

[0128] In the embodiment, a protruding portion that protrudes upward is provided at a central portion of the upper surface of the top plate portion 36B, and a protruding portion is provided at a central portion of the ceiling portion 30B in accordance with the shape of the top plate portion 36B. Alternatively, the upper surface of the top plate portion 36B may be a flat surface. The upper surface of the ceiling portion 30B may also be a flat surface.

[0129] The holding member 30 is disposed between the motor assembly 7 and the motor cover 9. The holding member 30 is in contact with at least a part of the motor cover 9. That is, the holding member 30 is in contact with each of the motor assembly 7 and the motor cover 9. The holding member 30 reduces transmission of vibration from the motor assembly 7 to the motor cover 9.

[0130] The holding member 30 includes projections 30C that protrude outward in the radial direction of the rotation axis AX. The projections 30C protrude radially outward from the outer peripheral surface of the peripheral wall portion 30A. A plurality of projections 30C is provided at intervals in the circumferential direction of the rotation axis AX. In the embodiment, three projections 30C are provided at intervals in the circumferential direction. The projections 30C are in contact with the motor cover 9. In the embodiment, only the projections 30C of the holding member 30 are in contact with the motor cover 9. The peripheral wall portion 30A is separated from the motor cover 9. The ceiling portion 30B is separated from the motor cover 9.

[0131] The cylindrical portion 9A of the motor cover 9 is disposed around the rotation axis AX of the motor 35. The motor cover 9 includes holding portions 9D that hold the projections 30C, respectively. A plurality of holding portions 9D is provided for the plurality of projections 30C. In the embodiment, three holding portions 9D are provided at intervals in the circumferential direction of the rotation axis AX. The holding portions 9D have recesses provided in rib portions 9E that protrude radially inward from the inner peripheral surface of the cylindrical portion 9A. The holding portions 9D hold the projections 30C by inserting the projections 30C into the recesses of the rib portions 9E. The holding portions 9D have recesses of the rib portions 9E, in which the projections 30C provided inside the motor cover 9 are housed.

[0132] In the embodiment, of the three projections 30C, one projection 30C1 is provided with a groove 30E on an outer end surface thereof. The groove 30E is elongated in the up-down direction. Of the three holding portions 9D, one holding portion 9D1, which holds the projection 30C1, is provided with a protrusion 9F. The holding portion 9D1 holds the projection 30C1. The protrusion 9F is inserted into the groove 30E.

[0133] The holding member 30 includes cover portions 30D disposed adjacent to the projections 30C in the circumferential direction of the rotation axis AX. The cover portions 30D protrude radially outward from the outer peripheral surface of the peripheral wall portion 30A. A plurality of cover portions 30D is provided at intervals in the circumferential direction. In the embodiment, three cover portions 30D are provided at intervals in the circumferential direction. The cover portions 30D are separated from the motor cover 9. The cover portions 30D are not in contact with the motor cover 9.

[0134] The cover portions 30D each have a guide surface 30F that faces the motor exhaust port 36E. The guide surface 30F faces radially inward. The guide surface 30F is disposed radially outside the motor exhaust ports 36E. As indicated by arrows in FIG. 28, air discharged from the motor exhaust port 36E is guided by the guide surface 30F. The guide surface 30F guides the air discharged from the motor exhaust port 36E downward.

[0135] The motor support member 31 is mounted on at least a part of the motor assembly 7. The motor support member 31 is in contact with at least the part of the motor assembly 7. The motor support member 31 is disposed between the body housing 5 and the motor assembly 7. In the embodiment, the motor support member 31 is mounted on a lower portion of the motor assembly 7. The motor support member 31 is in contact with the lower portion of the motor assembly 7. The motor support member 31 reduces transmission of vibration from the motor assembly 7. The motor support member 31 reduces vibration generated in the motor assembly 7 from being transmitted to an object around the motor assembly 7. The motor support member 31 reduces transmission of vibration from the motor assembly 7 to the body housing 5. The motor support member 31 reduces transmission of vibration from the motor assembly 7 to the tank cover 19. The motor support member 31 is an elastic member. The motor support member 31 is a flexible member. The motor support member 31 is a vibration-proof member. In the embodiment, the motor support member 31 is made of rubber.

[0136] The motor support member 31 is in contact with a lower portion of the outer peripheral surface 36F of the motor assembly 7. The motor support member 31 is in contact with the lower surface 36H, which is a lower end surface of the motor assembly 7.

[0137] The motor support member 31 is a cylindrical member that covers the lower portion of the motor assembly 7. The motor support member 31 is disposed between the lower portion of the motor assembly 7 and the tank cover 19. The motor support member 31 is in contact with at least a part of the tank cover 19. That is, the motor support member 31 is in contact with each of the motor assembly 7 and the tank cover 19. The motor support member 31 includes a cylindrical portion 31A and a rib portion 31B. The cylindrical portion 31A is in contact with the lower portion of the motor assembly 7. The rib portion 31B protrudes downward from the cylindrical portion 31A. The rib portion 31B is in contact with the upper surface of the tank cover 19. The motor support member 31 reduces transmission of vibration from the motor assembly 7 to the tank cover 19.

[0138] The cover support member 32 is disposed between the body housing 5 and the motor cover 9. The cover support member 32 reduces transmission of vibration from the motor cover 9 to the body housing 5. The holding member 30, the cover support member 32, and the motor support member 31 are separated from each other.

[0139] In the embodiment, the cover support member 32 includes a first cover support member 321 and a second cover support member 322. The first cover support member 321 is mounted on an upper portion of the motor cover 9. The second cover support member 322 is mounted on a lower portion of the motor cover 9. The first cover support member 321 is disposed between the cowling 20 and the motor cover 9. The first cover support member 321 is disposed between the cowling 20 and the upper portion of the motor cover 9. The second cover support member 322 is disposed between the tank cover 19 and the motor cover 9. The second cover support member 322 is disposed between the tank cover 19 and the lower portion of the motor cover 9.

[0140] The first cover support member 321 is disposed so as to be in contact with at least a part of the motor cover 9. The first cover support member 321 is an elastic member. The first cover support member 321 is a flexible member. The first cover support member 321 is a vibration-proof member. The first cover support member 321 reduces transmission of vibration from the motor cover 9 to the body housing 5. In the embodiment, the first cover support member 321 is made of rubber.

[0141] The first cover support member 321 is in contact with the upper portion of the motor cover 9. The first cover support member 321 is in contact with the upper surface of the top plate portion 9B. The first cover support member 321 is disposed between the cowling 20 and the upper portion of the motor cover 9. The first cover support member 321 is an annular member disposed on the upper surface of the top plate portion 9B.

[0142] The first cover support member 321 is in contact with each of the top plate portion 9B and the cowling 20. A groove 321A is provided on the upper surface of the first cover support member 321. The groove 321A is recessed downward from the upper surface of the first cover support member 321. The groove 321A has an annular shape in a plane orthogonal to the rotation axis AX. As illustrated in FIG. 9, the cowling 20 includes a rib portion 20D to be inserted into the groove 321A. The cowling 20 and the first cover support member 321 are positioned by inserting the rib portion 20D into the groove 321A.

[0143] The second cover support member 322 is disposed so as to be in contact with at least a part of the motor cover 9. The second cover support member 322 is an elastic member. The second cover support member 322 is a flexible member. The second cover support member 322 is a vibration-proof member. The second cover support member 322 reduces transmission of vibration from the motor cover 9 to the body housing 5. In the embodiment, the second cover support member 322 is made of rubber.

[0144] The second cover support member 322 is in contact with the lower portion of the motor cover 9. The second cover support member 322 is in contact with the lower end of the cylindrical portion 9A. The second cover support member 322 is disposed between the tank cover 19 and the lower portion of the motor cover 9. A part of the lower end of the cylindrical portion 9A is cut out by the cover exhaust port 9C. The second cover support member 322 is a curved member disposed along the lower end of the cylindrical portion 9A.

[0145] The second cover support member 322 is in contact with each of the cylindrical portion 9A and the tank cover 19. A groove 322A is provided on the upper surface of the second cover support member 322. The groove 322A is recessed downward from the upper surface of the second cover support member 322. The groove 322A has a curved shape in the plane orthogonal to the rotation axis AX. The lower end of the cylindrical portion 9A is inserted into the groove 322A. The cylindrical portion 9A and the second cover support member 322 are positioned by inserting the lower end of the cylindrical portion 9A into the groove 322A.

[0146] As illustrated in FIG. 18 etc., a holding groove 19D is provided on the upper surface of the tank cover 19. The holding groove 19D holds the second cover support member 322. The tank cover 19 and the second cover support member 322 are positioned by arranging the second cover support member 322 in the holding groove 19D.

[0147] The rotation restricting members 33 restrict rotation of the motor cover 9 with respect to the body housing 5. That is, the rotation restricting members 33 stop rotation of the motor cover 9. In the embodiment, the rotation restricting members 33 are made of rubber. A plurality of rotation restricting members 33 is provided at intervals in the circumferential direction of the outer peripheral surface of the motor cover 9. In the embodiment, two rotation restricting members 33 are provided.

[0148] Radially inside ends of the rotation restricting members 33 are fixed to lower portions of the outer peripheral surface of the cylindrical portion 9A. As illustrated in FIGS. 11 and 12, the cowling 20 includes holding ribs 20E that hold the rotation restricting members 33. The holding ribs 20E protrude downward from the ceiling surface of the cowling 20. The ceiling surface of the cowling 20 faces downward. Rotation of the motor cover 9 with respect to the body housing 5 is restricted by holding the rotation restricting members 33 fixed to the outer peripheral surface of the cylindrical portion 9A in the holding ribs 20E of the cowling 20.

[0149] FIG. 30 illustrates the body housing 5 according to the embodiment as viewed from lower right front. FIG. 31 is an exploded view illustrating the body housing 5 and the filter 8 according to the embodiment as viewed from lower right front. FIG. 32 illustrates the filter 8 attached to the body housing 5 according to the embodiment as viewed from below. FIG. 33 illustrates the housing suction port 26 according to the embodiment as viewed from below. FIG. 34 illustrates the filter 8 attached to the body housing 5 according to the embodiment as viewed from right rear below. FIG. 35 illustrates the housing suction port 26 according to the embodiment as viewed from right rear below. FIG. 36 is a vertical cross-sectional view illustrating a part of the tank cover 19 according to the embodiment, and is a cross-sectional arrow view taken along line G-G in FIG. 32. FIG. 37 is a vertical cross-sectional view illustrating a part of the tank cover 19 and the filter 8 according to the embodiment, and is a cross-sectional arrow view taken along line H-H in FIG. 32.

[0150] As described above, the housing suction port 26 is provided at the central portion of the tank cover 19. The body housing 5 is coupled to the tank 3 such that the housing suction port 26 faces the internal space of the tank 3. Rotation of the fan 34 of the motor assembly 7 generates suction force at the housing suction port 26. Suction force is generated at the tank suction port 16 by suction force generated at the housing suction port 26.

[0151] A closure inhibiting portion 37 for inhibiting the housing suction port 26 from being blocked is provided around the housing suction port 26. There is a possibility that the housing suction port 26 is blocked due to an object disposed in the internal space of the tank 3. The closure inhibiting portion 37 inhibits the housing suction port 26 from being blocked by an object disposed in the internal space of the tank 3. Examples of the object that may block the housing suction port 26 include the dust collecting pack 17 described with reference to FIGS. 8 and 14. The dust collecting pack 17 is disposed in the internal space of the tank 3. When the dust collecting pack 17 expands, the housing suction port 26 may be blocked by the dust collecting pack 17 from below. The closure inhibiting portion 37 inhibits the housing suction port 26 from being blocked by the dust collecting pack 17.

[0152] The closure inhibiting portion 37 includes a wall portion 38 and ventilation portions 39. The wall portion 38 is disposed at least partially around the housing suction port 26. The ventilation portions 39 are provided in the wall portion 38. The wall portion 38 protrudes from the plate portion 19A of the tank cover 19 toward the outside of the body housing 5. The wall portion 38 protrudes downward from the lower surface of the tank cover 19. In the embodiment, the wall portion 38 includes a surrounding rib provided so as to surround the housing suction port 26. In the following description, the wall portion 38 is appropriately referred to as a surrounding rib 38.

[0153] The surrounding rib 38 is provided so as to surround the housing suction port 26. The surrounding rib 38 protrudes toward the outside of the body housing 5. The surrounding rib 38 protrudes downward from the lower surface of the plate portion 19A of the tank cover 19. The surrounding rib 38 has a quadrangular shape in the plane orthogonal to the rotation axis AX.

[0154] The ventilation portions 39 are provided in the surrounding rib 38 so as not to be blocked by the dust collecting pack 17 even when the dust collecting pack 17 comes in contact with the lower end of the surrounding rib 38. In the embodiment, the ventilation portions 39 have recesses provided in the surrounding rib 38. In the following description, the ventilation portions 39 are appropriately referred to as recesses 39.

[0155] The recesses 39 are provided so as to be recessed upward from the lower end of the surrounding rib 38. A plurality of recesses 39 is provided in the plane orthogonal to the rotation axis AX. As described above, the surrounding rib 38 has a quadrangular shape in the plane orthogonal to the rotation axis AX. The surrounding rib 38 includes four plate-shaped portions 38A. Two recesses 39 are provided in one plate-shaped portion 38A. In one plate-shaped portion 38A, the two recesses 39 are provided in parallel in a direction orthogonal to the rotation axis AX.

[0156] As illustrated in FIG. 36, a width Wa of a recess 39 is larger than a depth Da of the recess 39. The width Wa refers to the dimension of the recess 39 in a direction parallel to the lower surface of the plate portion 19A (direction orthogonal to rotation axis AX). The depth Da refers to the dimension of the recess 39 in a direction orthogonal to the lower surface of the plate portion 19A (direction parallel to rotation axis AX).

[0157] In the embodiment, a lattice rib 40 is disposed in the housing suction port 26. The lattice rib 40 is integrated with the tank cover 19. As illustrated in FIG. 33, the lattice rib 40 is formed by combining a plurality of linear ribs 40A with a plurality of arcuate ribs 40B. The linear ribs 40A are disposed so as to pass through the center of the housing suction port 26 and connect one part of an edge of the housing suction port 26 to another part thereof. The plurality of linear ribs 40A extends in different directions. The arcuate ribs 40B are disposed so as to surround the center of the housing suction port 26. The arcuate ribs 40B are disposed so as to connect adjacent linear ribs 40A to each other.

[0158] As illustrated in FIGS. 35 and 37, the lattice rib 40 protrudes toward the outside of the body housing 5. The lattice rib 40 protrudes downward from the tank cover 19. The lattice rib 40 is formed so as to protrude downward. A central portion of the lattice rib 40 is positioned below the peripheral edge portion of the lattice rib 40 close to the edge of the housing suction port 26.

[0159] As illustrated in FIG. 37, a protrusion amount Ha of the surrounding rib 38 from the plate portion 19A is larger than a protrusion amount Hb of the lattice rib 40. The protrusion amount Ha refers to the distance between a lower surface 19E of the plate portion 19A and a lower end surface 38B of the surrounding rib 38 in a direction parallel to the rotation axis AX. The protrusion amount Hb refers to the distance between the lower surface 19E of the plate portion 19A and a lower end surface 40C of the lattice rib 40 in the direction parallel to the rotation axis AX.

[0160] The filter 8 is disposed on the housing suction port 26. The filter 8 is disposed so as to cover the housing suction port 26 from the outside of the body housing 5. The filter 8 is disposed so as to cover the housing suction port 26 from below the housing suction port 26. The outer dimension of the filter 8 is larger than the outer dimension of the housing suction port 26. The filter 8 is disposed so as to cover the whole housing suction port 26.

[0161] In the embodiment, the filter 8 is disposed inside the surrounding rib 38. The filter 8 has a quadrangular outer shape in the plane orthogonal to the rotation axis AX. The outer shape of the filter 8 is similar to the shape of the surrounding rib 38. A side surface of the filter 8 is in contact with an inner surface of the surrounding rib 38.

[0162] The filter 8 is a porous member such as a sponge. The filter 8 is a flexible member. The filter 8 is deformable. In a state where no external force acts on the filter 8, the outer dimension of the filter 8 is larger than that of the surrounding rib 38. The filter 8 is forced into the surrounding rib 38 in a state of being slightly deformed.

[0163] As illustrated in FIG. 36, in a state of the filter 8 is disposed inside the surrounding rib 38, each of the recesses 39 overlaps at least a part of a side surface 8A of the filter 8. That is, in a state of the filter 8 is disposed inside the surrounding rib 38, the side surface 8A of the filter 8 is partially exposed from the recesses 39.

[0164] As illustrated in FIG. 36, a lower surface 8B of the filter 8 is positioned below upper end surfaces 39A of the recesses 39, and is positioned above the lower end surface 38B of the surrounding rib 38. That is, the filter 8 does not protrude downward from the lower end of the surrounding rib 38. The upper surface of the filter 8 is positioned above the upper end surfaces 39A of the recesses 39, and is in contact with at least a part of the lattice rib 40.

[0165] The tank cover 19 includes fixing ribs 41 that fix the filter 8. The fixing ribs 41 are disposed at least partially around the housing suction port 26. The fixing ribs 41 are disposed inside the surrounding rib 38. The fixing ribs 41 protrude toward the outside of the body housing 5. The fixing ribs 41 protrude downward from the lower surface of the plate portion 19A. In the embodiment, the fixing ribs 41 have a rod shape elongated in the up-down direction. Four fixing ribs 41 are provided at intervals around the housing suction port 26.

[0166] The filter 8 has openings 8C into which the fixing ribs 41 are to be respectively inserted. The filter 8 is attached to the tank cover 19 so as to cover the housing suction port 26 by inserting the fixing ribs 41 into the respective openings 8C. As illustrated in FIG. 37, hook portions 41A are provided at lower ends of the fixing ribs 41. The filter 8 is prevented from being detached from the tank cover 19 by hooking the lower surface 8B of the filter 8 on the hook portions 41A.

[0167] As illustrated in FIG. 12, an exhaust flow path 42 is provided inside the body housing 5. The exhaust flow path 42 connects the cover exhaust port 9C to the filter unit mounting portion 29. The filter unit mounting portion 29 is an opening (exhaust port) provided in the body housing 5. The filter unit 12 is to be mounted in the opening (exhaust port). The exhaust flow path 42 is provided so as to connect the cover exhaust port 9C to the housing exhaust ports 28D with the filter unit 12 being mounted on the filter unit mounting portion 29. The cowling 20 includes a first flow path forming rib 20F and a second flow path forming rib 20G. Each of the first flow path forming rib 20F and the second flow path forming rib 20G protrudes downward from the ceiling surface of the cowling 20. The first flow path forming rib 20F is provided so as to surround the tank cover 19 in a plane parallel to the upper surface of the plate portion 19A. The first flow path forming rib 20F is provided so as to connect the cover exhaust port 9C to the filter unit mounting portion 29. A part on the upstream side of the exhaust flow path 42 is specified by the first flow path forming rib 20F, the tank cover 19, the ceiling surface of the cowling 20, and the upper surface of the plate portion 19A. The second flow path forming rib 20G is provided so as to connect a right front portion of the tank cover 19 to the filter unit mounting portion 29. A part on the downstream side of the exhaust flow path 42 is specified by the first flow path forming rib 20F, the second flow path forming rib 20G, the ceiling surface of the cowling 20, and the upper surface of the plate portion 19A.

[0168] Sound absorbing members 43 are disposed in the exhaust flow path 42. The sound absorbing members 43 are porous members such as sponges. The sound absorbing members 43 are respectively disposed so as to be in contact with the first flow path forming rib 20F and the second flow path forming rib 20G. As illustrated in FIGS. 8 and 9, the sound absorbing members 43 are disposed so as to be in contact with the ceiling surface of the cowling 20.

[0169] As illustrated in FIG. 12, the filter 27 of the filter unit 12 is disposed in an outlet of the exhaust flow path 42. The outlet of the exhaust flow path 42 includes the filter unit mounting portion 29. The filter unit mounting portion 29 is disposed rearward of the motor assembly 7 and disposed to the right of the battery mounting portion 10 at a side portion of the body housing 5. Air that has flowed through the exhaust flow path 42 passes through the filter 27 and the housing exhaust ports 28D of the filter case 28, and is then discharged to the outside of the body housing 5.

[0170] The battery mounting portion 10 is provided at the central portion of the body housing 5 in the left-right direction. The battery mounting portion 10 is provided at the rear portion of the body housing 5. The motor assembly 7 is provided at the central portion of the body housing 5 in the left-right direction. The filter 27 is disposed to the right of the battery mounting portion 10. The filter 27 is disposed rearward of the motor assembly 7.

[0171] When a line that passes through the center of the dust collector 1 in the left-right direction and extends in the front-rear direction is defined as a center line CL, the tank suction port 16, the motor assembly 7, and the battery mounting portion 10 are disposed on the center line CL. That is, in the left-right direction, the position of the tank suction port 16, the position of at least a part of the motor assembly 7, and the position of at least a part of the battery mounting portion 10 coincide with each other. In the embodiment, in the left-right direction, the position of the center of the tank suction port 16, the position of the center of the motor assembly 7, and the position of the center of the battery mounting portion 10 coincide with each other. The position of the center of the motor assembly 7 is the position of the rotation axis AX of the motor 35.

[0172] In the embodiment, in the state in which the filter unit 12 is mounted on the filter unit mounting portion 29, the housing exhaust ports 28D face a direction different from a direction that the cover exhaust port 9C faces. As illustrated in FIG. 12, in the plane orthogonal to the rotation axis AX, when the housing exhaust ports 28D face a first direction parallel to a first axis J1 and the cover exhaust port 9C faces a second direction parallel to a second axis J2, an angle θ formed between the first direction (first axis J1) and a second direction (second axis J2) is determined to 180 degrees or more and 270 degrees or less. In the embodiment, the housing exhaust ports 28D face the right rear. The cover exhaust port 9C faces the left. In the embodiment, the angle θ is approximately 225 degrees. The angle θ is a larger angle (front angle) of angles formed between the first direction (first axis J1) and the second direction (second axis J2) in the plane orthogonal to the rotation axis AX.

[0173] The exhaust flow path 42 is provided so as to surround the motor cover 9. The exhaust flow path 42 connects the cover exhaust port 9C to the housing exhaust ports 28D. As indicated by arrows in FIG. 12, air discharged leftward from the cover exhaust port 9C flows along the exhaust flow path 42. Air discharged from the cover exhaust port 9C flows forward on the left of the motor cover 9, and flows rightward on the front of the motor cover 9. The air then flows rearward on the right of the motor cover 9. The air that has flowed rearward on the right of the motor cover 9 passes through the filter 27, and is then discharged to the outside of the body housing 5.

[0174] The controller 15 is disposed inside the body housing 5 to the left front of the motor assembly 7. A controller holding rib holds the controller 15. The controller holding rib is provided in the cowling 20. The controller 15 is disposed at a position adjacent to the exhaust flow path 42. The controller 15 is disposed so as to face the first flow path forming rib 20F outside the exhaust flow path 42. Note that the controller 15 may be disposed inside the exhaust flow path 42.

[0175] Next, the operation of the dust collector 1 will be described. When the switch button 13 is operated and an operation signal for driving the motor 35 is input to the controller 15, the controller 15 outputs a control signal for starting driving of the motor 35. Rotation of the rotor shaft 35C based on the control signal output from the controller 15 rotates the fan 34 together with the rotor shaft 35C. The rotation of the fan 34 generates suction force at the housing suction port 26 and generates suction force at the tank suction port 16. The suction force generated at the tank suction port 16 causes dust to flow into the internal space of the tank 3 through the tank suction port 16 together with air. The dust collecting pack 17 is disposed in the internal space of the tank 3. The dust collecting pack 17 stores the dust suctioned from the tank suction port 16 into the dust collecting pack 17. The air suctioned from the tank suction port 16 to the dust collecting pack 17 passes through the dust collecting pack 17, and is then suctioned into the housing suction port 26.

[0176] FIG. 38 illustrates the relation between the dust collecting pack 17 and the surrounding rib 38 according to the embodiment. Air flowing from the tank suction port 16 into the dust collecting pack 17 expands the dust collecting pack 17. When the dust collecting pack 17 expands to approach the housing suction port 26, the dust collecting pack 17 may block the housing suction port 26. In the embodiment, the closure inhibiting portion 37 is provided around the housing suction port. The closure inhibiting portion 37 inhibits the housing suction port 26 from being blocked. The closure inhibiting portion 37 includes the surrounding rib 38 and the recesses 39 provided in the surrounding rib 38. As illustrated in FIG. 38, when the dust collecting pack 17 expands to approach the housing suction port 26, the dust collecting pack 17 comes in contact with the lower end surface 38B of the surrounding rib 38. The lower end surface 38B of the surrounding rib 38 is disposed below the housing suction port 26. The contact of the dust collecting pack 17 with the lower end surface 38B of the surrounding rib 38 inhibits the dust collecting pack 17 from blocking the housing suction port 26.

[0177] The recesses 39 are provided in the surrounding rib 38 so as not to be blocked by the dust collecting pack 17 even when the dust collecting pack 17 comes in contact with the lower end surface 38B of the surrounding rib 38. The recesses 39 secure ventilation paths that lead from the internal space of the tank 3 to the housing suction port 26. The side surface 8A of the filter 8 are at least partially exposed from the recesses 39. Therefore, air that has passed through the recesses 39 flows from the side surface 8A of the filter 8 to the inside of the filter 8, and then flows out of the upper surface of the filter 8. The upper surface of the filter 8 faces the housing suction port 26. Therefore, air that has flowed out of the upper surface of the filter 8 is suctioned into the housing suction port 26, and then flows into the internal space of the body housing 5.

[0178] When air that has passed through the dust collecting pack 17 contains fine dust, the filter 8 collects the dust from the air. The air from which the filter 8 has collected the dust is suctioned into the housing suction port 26.

[0179] Air that has passed through the housing suction port 26 flows into the motor intake port 36D of the motor assembly 7. The air that has flowed into the motor intake port 36D flows through the inside of the motor case 36, and is then discharged from the motor exhaust port 36E to the outside of the motor case 36. As indicated by the arrows in FIG. 28, air discharged from the motor exhaust port 36E is guided by the guide surface 30F of the cover portions 30D. The guide surface 30F guides the air discharged from the motor exhaust port 36E downward.

[0180] The air discharged from the motor exhaust port 36E flows between the outer peripheral surface 36F of the motor assembly 7 and the inner peripheral surface of the cylindrical portion 9A of the motor cover 9, and is then discharged from the cover exhaust port 9C. As indicated by the arrows in FIG. 12, air discharged leftward from the cover exhaust port 9C flows along the exhaust flow path 42, and is then discharged to the outside of the body housing 5 via the filter 27. When air flowing through the exhaust flow path 42 contains fine dust, the filter 27 collects the dust from the air. The air from which the filter 27 has collected the dust is discharged to the outside of the body housing 5. In the embodiment, the exhaust flow path 42 is provided so as to surround the motor cover 9. The elongated exhaust flow path 42 reduces generation of noise.

[0181] In the embodiment, the holding member 30 that reduces transmission of vibration from the motor assembly 7 to the motor cover 9 is provided. Reducing transmission of vibration to the motor cover 9 reduces transmission of vibration from the motor assembly 7 to the body housing 5. The reduction of vibration from the body housing 5 reduces generation of noise.

[0182] As described above, in the embodiment, the dust collector 1 includes: the body housing 5 having the housing suction port 26; the motor assembly 7 that is disposed inside the body housing 5, that includes the fan 34 and the motor 35 that rotates the fan 34, and generates suction force at the housing suction port 26; and the closure inhibiting portion 37 that inhibits the housing suction port 26 from being blocked. The closure inhibiting portion 37 includes: the wall portion 38 disposed at least partially around the housing suction port 26; and the ventilation portions 39 provided in the wall portion 38.

[0183] In the above-described configuration, providing the closure inhibiting portion 37 inhibits the housing suction port 26 from being blocked. Therefore, a decrease in suction performance of the dust collector 1 is inhibited. The closure inhibiting portion 37 includes the wall portion 38 disposed at least partially around the housing suction port 26. For example, even when the dust collecting pack 17 expands, the contact between the dust collecting pack 17 and the wall portion 38 inhibits the housing suction port 26 from being blocked by the dust collecting pack 17. The ventilation paths that lead to the housing suction port 26 are secured by providing the ventilation portions 39 in the wall portion 38. Therefore, a decrease in suction performance of the dust collector 1 is inhibited.

[0184] In the embodiment, the wall portion 38 includes a surrounding rib 38 provided so as to surround the housing suction port 26 and protruding toward the outside of the body housing 5.

[0185] In the above-described configuration, the surrounding rib 38 is provided so as to surround the housing suction port 26, so that the housing suction port 26 is effectively inhibited from being blocked by the dust collecting pack 17 even when the dust collecting pack 17 expands.

[0186] In the embodiment, the ventilation portions 39 include recesses 39 provided in the surrounding rib 38.

[0187] In the above-described configuration, the ventilation paths that lead to the housing suction port 26 are secured by providing the recesses 39 in the wall portion 38. Therefore, a decrease in suction performance of the dust collector 1 is inhibited.

[0188] In the embodiment, the width Wa of the recess 39 is larger than the depth Da of the recess 39.

[0189] In the above-described configuration, the ventilation paths that lead to the housing suction port 26 are appropriately secured.

[0190] In the embodiment, the dust collector 1 includes the lattice rib 40 disposed in the housing suction port 26.

[0191] In the above-described configuration, the lattice rib 40 inhibits foreign substances from passing through the housing suction port 26.

[0192] In the embodiment, the lattice rib 40 protrudes toward the outside of the body housing 5.

[0193] In the above-described configuration, the lattice rib 40 is formed so as to expand toward the outside of the body housing 5, which enables air to flow through a ventilation path in the lattice rib 40 from a lateral direction of the lattice rib 40. Therefore, air can smoothly flow through the ventilation path in the lattice rib 40. That is, air can smoothly flow into the housing suction port 26.

[0194] In the embodiment, the protrusion amount Ha of the surrounding rib 38 is larger than the protrusion amount Hb of the lattice rib 40.

[0195] In the above-described configuration, the protrusion amount Ha of the surrounding rib 38 is larger than the protrusion amount Hb of the lattice rib 40, so that the housing suction port 26 is effectively inhibited from being blocked by the dust collecting pack 17 even when the dust collecting pack 17 expands.

[0196] In the embodiment, the dust collector 1 includes the filter 8 disposed on the housing suction port 26.

[0197] In the above-described configuration, when air suctioned into the housing suction port 26 contains dust, the filter 8 collects the dust. Therefore, air containing dust is inhibited from being suctioned into the housing suction port 26.

[0198] In the embodiment, the filter 8 is disposed so as to cover the housing suction port 26 from the outside of the body housing 5.

[0199] In the above-described configuration, the filter 8 can effectively collect dust contained in air.

[0200] In the embodiment, the wall portion 38 includes a surrounding rib 38 provided so as to surround the housing suction port 26 and protruding toward the outside of the body housing 5. A filter 8 is disposed inside the surrounding rib 38.

[0201] In the above-described configuration, the housing suction port 26 is effectively inhibited from being blocked by the dust collecting pack 17, and air containing dust is effectively inhibited from being suctioned into the housing suction port 26.

[0202] In the embodiment, the ventilation portions 39 overlap at least parts of the side surface 8A of the filter 8.

[0203] In the above-described configuration, air that has passed through the ventilation portions 39 flows from the side surface 8A of the filter 8 to the inside of the filter 8, and is then suctioned into the housing suction port 26. That is, the ventilation paths that lead to the housing suction port 26 are secured by the ventilation portions 39 overlapping at least parts of the side surface 8A of the filter 8.

[0204] In the embodiment, the outer dimension of the filter 8 is larger than the outer dimension of the housing suction port 26.

[0205] In the above-described configuration, air containing dust is effectively inhibited from being suctioned into the housing suction port 26.

[0206] In the embodiment, the dust collector 1 includes the fixing ribs 41 that are disposed at least partially around the housing suction port 26, that protrude toward the outside of the body housing 5, and that fix the filter 8.

[0207] In the above-described configuration, the housing suction port 26 and the filter 8 are positioned.

[0208] In the embodiment, the dust collector 1 includes the tank 3 that stores dust. The body housing 5 is coupled to the tank 3 such that the housing suction port 26 faces the internal space of the tank 3.

[0209] In the above-described configuration, a decrease in performance of suctioning from the tank 3 to the body housing 5 is inhibited.

[0210] In the embodiment, the dust collecting pack 17 is disposed in the internal space of the tank 3. The closure inhibiting portion 37 inhibits the housing suction port 26 from being blocked by the dust collecting pack 17.

[0211] In the above-described configuration, a decrease in suction performance of the dust collector 1 is inhibited even when the dust collecting pack 17 disposed in the internal space of the tank 3 expands.

[0212] In the embodiment, the dust collector 1 includes: the body housing 5; the motor assembly 7 disposed inside the body housing 5 and including the motor 35 and the motor case 36 that houses the motor 35; and the holding member 30 to reduce transmission of vibration from the motor assembly 7. The holding member 30 has the first surface 301 and the second surface 302. The first surface 301 is in contact with at least a part of the outer peripheral surface 36F of the motor assembly 7 disposed around the rotation axis AX of the motor 35. The second surface 302 is in contact with at least a part of an end surface of the motor assembly 7 connected to an end of the outer peripheral surface 36F.

[0213] In the above-described configuration, the holding member 30 reduces transmission of vibration from the motor assembly 7 to the surroundings, which reduces noise generated from the dust collector 1.

[0214] In the embodiment, the holding member 30 has the recess 303 that covers the end surface and a part of the outer peripheral surface 36F. The inner surface of the recess 303 includes the first surface 301 and the second surface 302.

[0215] In the above-described configuration, the motor assembly 7 is covered with the holding member 30 having the recess 303, which causes the holding member 30 to be appropriately in contact with the motor assembly 7. Therefore, transmission of vibration from the motor assembly 7 to the surroundings is effectively reduced.

[0216] In the embodiment, the rotation axis AX extends in the up-down direction. The end surface includes the upper surface 36G of the motor assembly 7. The holding member 30 includes the recess 303 that covers the upper surface 36G and the upper portion of the outer peripheral surface 36F. The inner peripheral surface of the recess 303 includes the first surface 301. The ceiling surface of the recess 303 includes the second surface 302.

[0217] In the above-described configuration, the motor assembly 7 is covered with the holding member 30 having the recess 303 from above, which causes the holding member 30 to be appropriately in contact with the motor assembly 7. Therefore, transmission of vibration from the motor assembly 7 to the surroundings is effectively reduced.

[0218] In the embodiment, the dust collector 1 includes the motor cover 9 that covers the motor assembly 7 inside the body housing 5. The holding member 30 is disposed between the motor assembly 7 and the motor cover 9 to reduce transmission of vibration from the motor assembly 7 to the motor cover 9.

[0219] In the above-described configuration, an air flow path is formed between the body housing 5 and the motor cover 9. Furthermore, the holding member 30 reduces transmission of vibration from the motor assembly 7 to the motor cover 9, which effectively reduces noise generated from the dust collector 1.

[0220] In the embodiment, the holding member 30 is in contact with at least a part of the motor cover 9.

[0221] In the above-described configuration, transmission of vibration from the motor assembly 7 to the motor cover 9 is reduced.

[0222] In the embodiment, the holding member 30 includes the projections 30C that protrude outward in the radial direction of the rotation axis AX. The motor cover 9 includes holding portions 9D that hold the projections 30C.

[0223] In the above-described configuration, an area of contact between the holding member 30 and the motor cover 9 is reduced, which effectively reduces transmission of vibration from the motor assembly 7 to the motor cover 9. Furthermore, the projections 30C function as rotation stoppers for the holding member 30, which inhibits relative rotation of the holding member 30 and the motor cover 9.

[0224] In the embodiment, the motor exhaust port 36E is provided on the outer peripheral surface 36F of the motor case 36. The holding member 30 includes: a projection 30C that is in contact with the motor cover 9; and cover portions 30D that face the motor exhaust port 36E and that are separated from the motor cover 9.

[0225] In the above-described configuration, an area of contact between the holding member 30 and the motor cover 9 is reduced, which effectively reduces transmission of vibration from the motor assembly 7 to the motor cover 9. Furthermore, the projections 30C function as rotation stoppers for the holding member 30, which inhibits relative rotation of the holding member 30 and the motor cover 9. Furthermore, the cover portions 30D can guide air discharged from the motor exhaust port 36E.

[0226] In the embodiment, the dust collector 1 includes the cover support member 32 that is disposed between the body housing 5 and the motor cover 9 to reduce transmission of vibration from the motor cover 9 to the body housing 5.

[0227] In the above-described configuration, the cover support member 32 reduces transmission of vibration from the motor cover 9 to the body housing 5, which effectively reduces noise generated from the dust collector 1.

[0228] In the embodiment, the dust collector 1 includes the tank 3 that stores dust. The body housing 5 includes: the tank cover 19 that covers the opening 18 of the tank 3; and the cowling 20 that forms the internal space of the body housing 5 between the cowling 20 and the tank cover 19. The motor cover 9 is disposed in the internal space. The cover support member 32 includes the first cover support member 321 disposed between the cowling 20 and the motor cover 9.

[0229] In the above-described configuration, the first cover support member 321 reduces transmission of vibration from the motor cover 9 to the cowling 20, which effectively reduces noise generated from the dust collector 1.

[0230] In the embodiment, the opening 18 of the tank 3 is provided at the upper end of the tank 3. The tank cover 19 covers the opening 18 of the tank 3 from above the tank 3. The cowling 20 is disposed above the tank cover 19. The first cover support member 321 is disposed between the cowling 20 and the upper portion of the motor cover 9.

[0231] In the above-described configuration, the first cover support member 321 reduces transmission of vibration from the motor cover 9 to the cowling 20, which effectively reduces noise generated from the dust collector 1.

[0232] In the embodiment, the rotation axis AX extends in the up-down direction. The motor cover 9 includes: the cylindrical portion 9A disposed around the rotation axis AX; and the top plate portion 9B connected to the upper end of the cylindrical portion 9A. The first cover support member 321 has an annular shape, and is disposed on the upper surface of the top plate portion 9B.

[0233] In the above-described configuration, the first cover support member 321 can effectively reduce transmission of vibration from the motor cover 9 to the cowling 20.

[0234] In the embodiment, the dust collector 1 includes the tank 3 that stores dust. The body housing 5 includes the tank cover 19 that covers the opening 18 of the tank 3. The cover support member 32 includes the second cover support member 322 disposed between the tank cover 19 and the motor cover 9.

[0235] In the above-described configuration, the second cover support member 322 reduces transmission of vibration from the motor cover 9 to the tank cover 19, which effectively reduces noise generated from the dust collector 1.

[0236] In the embodiment, the opening 18 of the tank 3 is provided at the upper end of the tank 3. The tank cover 19 covers the opening 18 of the tank 3 from above the tank 3. The motor cover 9 is disposed above the tank cover 19. The second cover support member 322 is disposed between the tank cover 19 and the lower portion of the motor cover 9.

[0237] In the above-described configuration, the second cover support member 322 reduces transmission of vibration from the motor cover 9 to the tank cover 19, which effectively inhibits noise generated from the dust collector 1.

[0238] In the embodiment, the rotation axis AX extends in the up-down direction. The motor cover 9 includes: the cylindrical portion 9A disposed around the rotation axis AX; and the top plate portion 9B connected to the upper end of the cylindrical portion 9A. The cylindrical portion 9A has the cover exhaust port 9C extending upward from the lower end of the cylindrical portion 9A. The second cover support member 322 has a curved shape, and is disposed along the lower end of the cylindrical portion 9A.

[0239] In the above-described configuration, the second cover support member 322 can effectively reduce transmission of vibration from the motor cover 9 to the tank cover 19. Furthermore, the cover exhaust port 9C is prevented from being reduced in size or blocked by the second cover support member 322.

[0240] In the embodiment, the dust collector 1 includes the motor support member 31 that is disposed between the body housing 5 and the motor assembly 7 to reduce transmission of vibration from the motor assembly 7 to the body housing 5.

[0241] In the above-described configuration, the motor support member 31 reduces transmission of vibration from the motor assembly 7 to the body housing 5, which effectively reduces noise generated from the dust collector 1.

[0242] In the embodiment, the dust collector 1 includes the tank 3 that stores dust. The body housing 5 includes the tank cover 19 that covers the opening 18 provided at the upper end of the tank 3 from above the tank 3. The motor support member 31 is disposed between the lower portion of the motor assembly 7 and the tank cover 19.

[0243] In the above-described configuration, the motor support member 31 reduces transmission of vibration from the motor assembly 7 to the tank cover 19, which effectively reduces noise generated from the dust collector 1.

[0244] In the embodiment, the motor support member 31 includes: the cylindrical portion 31A that is in contact with the lower portion of the motor assembly 7; and the rib portion 31B that protrudes downward from the cylindrical portion 31A and that is in contact with the tank cover 19.

[0245] In the above-described configuration, the motor support member 31 can effectively reduce transmission of vibration from the motor assembly 7 to the tank cover 19.

[0246] In the embodiment, the dust collector 1 includes: the cover support member 32 that is disposed between the body housing 5 and the motor cover 9 to reduce transmission of vibration from the motor cover 9 to the body housing 5; and the motor support member 31 that is disposed between the body housing 5 and the motor assembly 7 to reduce transmission of vibration from the motor assembly 7 to the body housing 5. The holding member 30, the cover support member 32, and the motor support member 31 are separated from each other.

[0247] In the above-described configuration, the holding member 30, the cover support member 32, and the motor support member 31 are separated from each other, which can effectively reduce transmission of vibration from the motor assembly 7 to the body housing 5. Therefore, noise generated from the dust collector 1 is effectively reduced. Furthermore, workability in assembling the dust collector 1 is improved.

[0248] In the embodiment, the dust collector 1 includes the cover support member 32 disposed between the body housing 5 and the motor cover 9. The holding member 30 reduces transmission of vibration from the motor assembly 7 to the motor cover 9. The cover support member 32 reduces transmission of vibration from the motor cover 9 to the body housing 5.

[0249] In the above-described configuration, transmission of vibration from the motor assembly 7 to the body housing 5 can be effectively reduced. Therefore, noise generated from the dust collector 1 is effectively reduced.

[0250] In the embodiment, the dust collector 1 includes: the tank 3 that stores dust; the body housing 5 is disposed above the tank 3; and the battery mounting portion 10 is provided at a side portion of the body housing 5; and the filter 27 is disposed adjacent to the battery mounting portion 10 at a side portion of the body housing 5. Air discharged from the body housing 5 passes through the filter 27.

[0251] In the above-described configuration, the filter 27 is disposed adjacent to the battery mounting portion 10 at a side portion of the body housing 5, which inhibits an increase in size of the dust collector 1. For example, when the filter 27 is disposed inside the tank 3, an increase in size of the tank 3 is necessary for securing the capacity of the tank 3. In particular, when both the filter 27 and the dust collecting pack 17 are disposed inside the tank 3, the increase in size of the tank 3 is necessary in order to sufficiently expand the dust collecting pack 17. When the tank 3 increases in size, the entire dust collector 1 may increase in size. In the above-described configuration, the filter 27 is disposed at a side portion of the body housing 5, so that the dust collecting pack 17 disposed inside the tank 3 can sufficiently expand without increasing the tank 3 in size. The tank 3 does not need to be increased in size, which inhibits the increase in size of the dust collector 1. Furthermore, when air discharged from the body housing 5 contains dust, the filter 27 collects the dust, so that clean air is discharged to the outside of the body housing 5.

[0252] In the embodiment, the battery mounting portion 10 is provided at the central portion of the body housing 5 in the left-right direction. The battery mounting portion 10 is provided at the rear portion of the body housing 5 in the front-rear direction.

[0253] In the above-described configuration, the battery mounting portion 10 is provided at the central portion of the body housing 5 in the left-right direction, and is provided at the rear portion of the body housing 5 in the front-rear direction, which inhibits an increase in size of the body housing 5.

[0254] In the embodiment, the filter 27 is disposed to the right of the battery mounting portion 10.

[0255] In the above-described configuration, the increase in size of the body housing 5 is inhibited.

[0256] In the embodiment, the dust collector 1 includes the motor assembly 7 disposed inside the body housing 5 and including the fan 34 and the motor 35 that rotates the fan 34. The motor assembly 7 is provided at the central portion of the body housing 5 in the left-right direction.

[0257] In the above-described configuration, the increase in size of the body housing 5 is inhibited. Furthermore, the weight balance of the body housing 5 in the left-right direction is improved.

[0258] In the embodiment, the dust collector 1 includes the tank suction port 16 provided at the front portion of the tank 3. The motor assembly 7 generates suction force at the tank suction port 16.

[0259] In the above-described configuration, the battery mounting portion 10 is provided at the rear portion of the body housing 5, and the tank suction port 16 is provided at the front portion of the tank 3, which inhibits the increase in size of the dust collector 1.

[0260] In the embodiment, the position of the tank suction port 16, the position of at least a part of the motor assembly 7, and the position of at least a part of the battery mounting portion 10 coincide with each other in the left-right direction.

[0261] In the above-described configuration, the increase in size of the body housing 5 is inhibited. Furthermore, the weight balance of the dust collector 1 in the left-right direction is improved. Furthermore, when defining the center line CL that passes through the center of the dust collector 1 in the left-right direction and that extends in the front-rear direction, the outer shape of the dust collector 1 is linearly symmetric substantially with respect to the center line CL, which improves the visual appearance of the dust collector 1.

[0262] In the embodiment, the dust collector 1 includes the filter unit mounting portion 29 that is provided rearward of the motor assembly 7 and adjacent to the battery mounting portion 10 at a side portion of the body housing 5 and that is mounted with the filter unit 12 including the filter 27 and the filter case 28 that holds the filter 27. The filter 27 faces the housing exhaust ports 28D of the filter case 28.

[0263] In the above-described configuration, when air discharged from the body housing 5 contains dust, the filter 27 can collect the dust from the air. Therefore, clean air is discharged from the filter 27 to the outside of the body housing 5.

[0264] In the embodiment, the filter 27 is fixed to the filter case 28.

[0265] In the above-described configuration, the filter 27 is fixed to the filter case 28, which facilitates replacement of the filter unit 12. Furthermore, maintainability of the filter unit 12 is improved.

[0266] In the embodiment, the dust collector 1 includes: the motor assembly 7 disposed inside the body housing 5, and including the fan 34 and the motor 35 that rotates the fan 34; and the motor cover 9 disposed so as to cover the motor assembly 7 inside the body housing 5 and having the cover exhaust port 9C. The exhaust flow path that connects the cover exhaust port 9C to the housing exhaust ports 28D 42 is provided inside the body housing 5.

[0267] In the above-described configuration, air discharged from the cover exhaust port 9C is discharged to the outside of the body housing 5 via the housing exhaust ports 28D.

[0268] In the embodiment, the rotation axis AX of the motor 35 extends in the up-down direction. The motor cover 9 includes: the cylindrical portion 9A disposed around the rotation axis AX; and the top plate portion 9B disposed at the upper end of the cylindrical portion 9A. The cover exhaust port 9C is provided so as to extend upward from the lower end of the cylindrical portion 9A.

[0269] In the above-described configuration, air is discharged from the cover exhaust port 9C elongated in the up-down direction. Noise, such as wind noise, which occurs at the time when air is discharged from the cover exhaust port 9C, is reduced or suppressed.

[0270] In the embodiment, the housing exhaust ports 28D face a direction different from a direction which the cover exhaust port 9C faces.

[0271] In the above-described configuration, the length of the exhaust flow path 42 can be increased while inhibiting an increase in size of the body housing 5. Generation of noise due to air flowing through the exhaust flow path 42 is reduced or suppressed by increasing the length of the exhaust flow path 42.

[0272] In the embodiment, the housing exhaust ports 28D face the first direction. The cover exhaust port 9C faces the second direction different from the first direction. The angle θ formed between the first direction and the second direction is 180 degrees or more and 270 degrees or less.

[0273] In the above-described configuration, the length of the exhaust flow path 42 can be increased while inhibiting an increase in size of the body housing 5. Generation of noise due to air flowing through the exhaust flow path 42 is reduced or suppressed by increasing the length of the exhaust flow path 42.

[0274] In the embodiment, the housing exhaust ports 28D face the right rear side, and the cover exhaust port 9C faces the left.

[0275] In the above-described configuration, the length of the exhaust flow path 42 can be increased while inhibiting an increase in size of the body housing 5. Generation of noise due to air flowing through the exhaust flow path 42 is reduced or suppressed by increasing the length of the exhaust flow path 42.

[0276] In the embodiment, the dust collector 1 includes the sound absorbing members 43 disposed in the exhaust flow path 42.

[0277] In the above-described configuration, generation of noise due to air flowing through the exhaust flow path 42 is reduced or suppressed by arranging the sound absorbing members 43 in the exhaust flow path 42.

[0278] In the embodiment, the dust collector 1 includes the controller 15 that controls the motor 35. The controller 15 is disposed in the exhaust flow path 42 or disposed at a position adjacent to the exhaust flow path 42.

[0279] In the above-described configuration, the controller 15 is disposed inside the exhaust flow path 42, which improves the cooling performance of the controller 15. The controller 15 is disposed at a position adjacent to the exhaust flow path 42 on the outside of the exhaust flow path 42, which inhibits trouble of the controller 15 caused by static electricity.

[0280] In the embodiment, the dust collector 1 includes the accessory housing portion 24 (first accessory housing portion) capable of holding accessories. The accessory housing portion 24 is disposed to the left of the battery mounting portion 10 at a side portion of the body housing 5.

[0281] In the above-described configuration, the filter 27 is disposed to the right of the battery mounting portion 10. The accessory housing portion 24 is disposed to the left of the battery mounting portion 10. Therefore, the filter 27 discharges clean air to the outside of the body housing 5, and accessories of the dust collector 1 are held in the accessory housing portion 24 while inhibiting an increase in size of the body housing 5.

[0282] In the embodiment, the dust collector 1 includes the accessory housing portion 25 (second accessory housing portion) capable of holding accessories. The accessory housing portion 25 is provided rearward of the battery mounting portion 10 in the tank 3.

[0283] In the above-described configuration, accessories are held in the accessory housing portions 25 while inhibiting an increase in size of the dust collector 1.

[0284] FIG. 39 illustrates ventilation portions 39 according to another embodiment. In the above-described embodiment, the ventilation portions 39 provided in a surrounding rib 38 are recesses recessed upward from the lower end of the surrounding rib 38. As illustrated in FIG. 39, the ventilation portions 39 may be ventilation holes 390 provided in the surrounding rib 38. The ventilation holes 390 are provided above the lower end of the surrounding rib 38. The ventilation holes 390 are provided so as to penetrate the surrounding rib 38 from the outer surface to the inner surface thereof. A filter 8 is disposed inside the surrounding rib 38. A side surface 8A of the filter 8 is exposed from the ventilation holes 390. Even when a dust collecting pack 17 expands to come in contact with a lower end surface 38B of the surrounding rib 38, the dust collecting pack 17 does not block the ventilation holes 390. The ventilation holes 390 secure ventilation paths that lead from the internal space of a tank 3 to a housing suction port 26.

[0285] Although the invention has been described with respect to specific embodiments for a complete and clear disclosure, the appended claims are not to be thus limited but are to be construed as embodying all modifications and alternative constructions that may occur to one skilled in the art that fairly fall within the basic teaching herein set forth.