Dual-purpose foldable treadmill

[0001] 1. Field of the Invention

[0002] This invention relates to a treadmill, more particularly a dual-purpose foldable treadmill.

[0003] 2. Description of the Related Art

[0004] A conventional treadmill as shown in FIG. 1 includes a supporting frame 11, a control panel 12, and a track bed 13. The supporting frame 11 has the control panel 12 mounted thereon and has opposite lower ends connected to the track bed 13. In general, handrails are disposed respectively on both sides of the supporting frame 11 for gripping by a user when running or walking on the treadmill.

[0005] Due to the bulkiness of conventional treadmills, storage or transportation thereof is a major problem. Another problem with conventional treadmills is that they are relatively expensive exercise equipment designed for only one specific purpose. Thus it is desirable to have a treadmill that can be stored in limited space and provide functions other than acting as exercising equipment.

[0006] Therefore, an object of the present invention is to provide a dual-purpose foldable treadmill that can be used as exercising equipment or a piece of furniture.

[0007] Accordingly, a dual-purpose foldable treadmill of the present invention comprises a drive unit, a base frame, an arm frame, a cantilever panel, and a tread frame.

[0008] The base frame is configured to permit the drive unit to be mounted therein, and extends in a transverse direction to terminate at first and second end walls. The base frame has a rear marginal zone which extends between the first and second end walls.

[0009] The arm frame includes a base segment which is disposed to flank the second end wall, and an arm body which extends from the base segment in an upright direction to terminate at a top joining end.

[0010] The cantilever panel extends from the top joining end in the transverse direction and over the base frame to terminate at a cantilevered end.

[0011] The tread frame includes front and rear marginal regions which are opposite to each other, and defines a lengthwise line extending from the front marginal region to terminate at the rear marginal region. The front marginal region is pivotably mounted on the rear marginal zone about a pivot axis that is oriented in the transverse direction such that the rear marginal region is turnable between an unfolded position, where the lengthwise line of the tread frame is transverse to both the upright and transverse directions, and a folded position, where the lengthwise line of the tread frame is parallel to the upright direction.

[0012] The dual-purpose foldable treadmill provided by the present invention can be conveniently folded to save storage space and, in the folded position, can be used as a piece of furniture for placement or storage of objects or for sitting.

[0021] Referring to FIGS. 2, 3 and 4, a preferred embodiment of a dual-purpose foldable treadmill according to the present invention is shown to comprise a drive unit 23, a base frame 2, an arm frame 31, a cantilever panel 32, and a tread frame 41.

[0022] The drive unit 23 includes a drive-force transmission wheel 231 coupled to an output shaft or a motor (not shown) so as to provide a drive force for the treadmill.

[0023] The base frame 2 is configured to permit the drive unit 23 to be mounted therein, and extends in a transverse direction (L2) to terminate at first and second end walls 21, 24. The base frame 2 has a rear marginal zone 25 which extends between the first and second end walls 21, 24.

[0024] The arm frame 31 includes a base segment 312 which is disposed to flank the second end wall 24, and an arm body 311 which extends from the base segment 312 in an upright direction (L1) to terminate at a top joining end 313. The arm body 311 has inward and outward surfaces 314, 315 which are respectively proximate to and distal from the second end wall 24 of the base frame 2.

[0025] The cantilever panel 32 extends from the top joining end 313 of the arm frame 31 in the transverse direction (L2) and over the base frame 2 to terminate at a cantilevered end 322. The cantilevered end 322 is aligned with the first end wall 21 of the base frame 2 in the upright direction (L1).

[0026] The cantilever panel 32 includes a front portion 325 and a rear portion 326 which are opposite to each other in a longitudinal direction (L3) that is transverse to both the upright direction (L1) and the transverse direction (L2), and has an upward surface 327 and a downward surface 328 which are opposite to each other in the upright direction (L1). The cantilever panel 32 further has a depression 324 provided therein for holding an object.

[0027] The tread frame 41 includes front and rear marginal regions 411, 412 which are opposite to each other, and defines a lengthwise line (T) extending from the front marginal region 411 to terminate at the rear marginal region 412. The front marginal region 411 is pivotably mounted on the rear marginal zone 25 of the base frame 2 about a pivot axis that is oriented in the transverse direction (L2) such that the rear marginal region 412 is turnable between an unfolded position, where the lengthwise line (T) of the tread frame 4 is transverse to both the upright direction (L1) and the transverse direction (L2), and a folded position, where the lengthwise line (T) of the tread frame 4 is parallel to the upright direction (L1).

[0028] The tread frame 41 further includes front and rear rollers 45, 46 which are respectively journalled on the front and rear marginal regions 411, 412 so as to be rotatable respectively about front and rear rolling axes that are parallel to the pivot axis. The front roller 45 is coupled with the drive unit 23 so as to be driven thereby. An endless belt 42 is disposed to be entrained about the front and rear rollers 45, 46.

[0029] Specifically, the rear marginal zone 25 has first and second bearing areas 43, 44 which are respectively adjacent to the first and second end walls 21, 24. The front roller 45 is configured to have first and second front journal ends 451, 452 which are respectively journalled on the first and second bearing areas 43, 44.

[0030] As shown in FIGS. 2 and 5, the first and second bearing areas 43, 44 are in the form of lugs which respectively define first and second inner tubular surfaces 431, 441 to surround the pivot axis such that the front rolling axis is in line with the pivot axis, thereby permitting the first and second front journal ends 451, 452 to be journalled on the first and second inner tubular surfaces 431, 441 of the first and second lugs 43, 44, respectively.

[0031] A locking unit 33 is disposed to lock the rear marginal region 412 of the tread frame 41 to the rear portion 326 of the cantilever panel 32 so as to lock the rear marginal region 412 in the folded position (see FIGS. 5 and 6).

[0032] Referring to FIGS. 3, 4 and 6, the locking unit 33 includes a plug member 330 which includes a deformable base end 331 disposed on and deformable inwardly of the downward surface 328, and a plug end 332 extending downwardly from the deformable base end 331, and which is disposed proximate to the cantilevered end 322. A socket member 413 is disposed in the rear marginal region 412 of the tread frame 41. Once the rear marginal region 412 comes into contact with the plug end 332 during displacement to the folded position, the plug end 332 is pressed to move the deformable base end 331 to a deformed position so as to permit the plug end 332 to be trapped in the socket member 413, thereby locking the rear marginal region 412 in the folded position.

[0033] Referring further to FIG. 2, the rear portion 326 of the cantilever panel 32 has a cutout region 36 which extends in the transverse direction (L2) to terminate at first and second holding surfaces 361, 362 that are spaced apart from each other by a rear space. A crosspiece 34 is disposed to span the rear space to interconnect the first and second holding surfaces 361, 362. The crosspiece 34 may serve as a handgrip for a user.

[0034] A control panel body 35 is disposed on the cantilever panel 32 adjacent to the cutout region 36 and is electrically connected to the drive unit 23 for operation by the user to control the speed of the endless belt 42.

[0035] When the dual-purpose foldable treadmill is in the folded position as shown in FIG. 5, it can be used as apiece of furniture for placement or storage of objects, i.e., objects can be placed on the cantilever panel 32 or stored in a space formed between the cantilever panel 32 and the base frame 2.

[0036] Referring to FIGS. 2 and 7, a pair of foot pads 323 are disposed on the cantilevered end 322 of the cantilever panel 32 and a pair of foot pads 22 are disposed on the first end wall 21 of the base frame 2 for resting on a floor surface. Thus, when the dual-purpose foldable treadmill is in the folded position and turned sidewise as shown in FIG. 7, it can be used as a piece of furniture, e.g., a bench.

[0037] Specifically, when the folded dual-purpose foldable treadmill is disposed such that the foot pads 22, 323 rest on the floor surface and the arm frame 31 is parallel to the floor surface with the outward surface 315 facing away from the floor surface, the outward surface 315 provides a sitting surface.

[0038] To summarize, the dual-purpose foldable treadmill according to the present invention has the following advantages:

• • [0039] 1. The dual-purpose foldable treadmill can be easily folded to save storage space. Moreover, the folded treadmill can function as a piece of furniture for placement or storage of objects or for sitting.
  • [0040] 2. The arrangement of the locking unit 33 permits convenient releasable locking engagement between the cantilever panel 32 and the tread frame 41.

[0041] While the present invention has been described in connection with what is considered the most practical and preferred embodiment, it is understood that this invention is not limited to the disclosed embodiment but is intended to cover various arrangements included within the spirit and scope of the broadest interpretations and equivalent arrangements.