Optical-Reflecting Decoder Modular Design Mechanism of Mouse

1. Field of the invention

The prevent invention is an optical-reflecting decoder modular design mechanism for mouse which is to make the circuit and coding structure of an optomechanical,mouse into a smaller size and to put on a base in order to fit into different shapes of mouse casing; such as mechanism of watch can put into different design of watch casing.

2. Description of the prior art

Currently, the circuit and mechanism of conventional mice (optomechanical) are very similar, but the appearance design (or casing design) of mouse is multifarious to attract more consumers. However, mouse has to re-design the circuit and mechanism to fit the casing design; thus makes the cost of development and design too high and wastes the resource. If there is a design of mouse circuit and mechanism which can be used in different design of casing, then should save developing cost and reduce the waste of resource.

As shown in FIG. 1 is an exploded view of conventional mouse; the conventional mouse are differentiated by different brand, and also the mouse structures are very complicated. Using my previous invention of U.S. Pat. No. 5,311,209, the mouse structure as an example for illustration, an assembled optomechanical mouse should include a case (10), a control circuit (11), an optical mechanism (12) and one ball member (13) etc. The case (10) should be composed by bottom casing (14), the top casing (15), and one or more buttons on the top casing (16). The front of control circuit (11) has two or three touching switches (17), and on the end of control circuit (11) is a photoelectric set (12) which is composed two sets of LED, double-chip phototransistor, and two slot discs (18). The ball member (13) is fixed by a ball cover (19) on the bottom casing (15), and one idle roller prop up tightly close to the slotted discs (18). The top casing (14) and bottom casing (15) are locked by one or several screws (21) and the bottom of bottom casing (15) has one to four pads (22).

According to above structure, we can conclude that no matter what change of mouse casing, the five major components; control circuit (11), photoelectric set (12), slotted discs (18), ball member (13) and idle roller (20) will not change. The present invention uses these five components to form a mechanism module of a mouse.

The main purpose of present invention is to provide the major components of a conventional mouse, and using modular design theory to shrink the size of all components to put on the base (later call mechanism); thus it can be installed into different mouse casings, thus can save developing cost and prevent resource waste.

The drawings disclose an illustrative embodiment of the present invention which serves to exemplify the various advantages and objects hereof, and are as follows:

FIG. 1. is an exploded view of conventional mouse;

FIG. 2. is an exploded view of mechanism and case of the present invention;

FIG. 3. is a side section view of mechanism and case of the present invention;

FIG. 4. is a perspective view of cable connect to the mechanism of the present invention;

FIG. 5. is an enlarge perspective view of the mechanism of the present invention;

FIG. 6 is a portion diagrammatic of transmission transistor and receiving transistor of the base back of the present invention; and

FIG. 7. is a side section view of signal transfer using optical-reflecting theory in the present invention.

As shown in FIG. 2 and FIG. 3 is an exploded view of mechanism and case of the present invention and a side section view of mechanism and case. The top casing (30) and bottom casing (31) are combined by clasps without screws. The bottom of the top casing has one rectangular female clasp (32), and on the bottom of this female clasp has a hole (33) for hook up. On the bottom of bottom casing (31) has one arched spring as male clasp (34), and on the top of male clasp (34) has a protrudance (35) for hook up. When combine the top casing and bottom casing, the protrudance (35) of male clasp (34) can buckle into the hole (33) of female clasp (35). When you want to separate the top casing and bottom casing, you only need to push the male clasp (34) inward, then the protrudance (35) will depart from the hole (33).

The present invention wants to shrink the overall size of the mechanism, so all components of mouse control circuit are soldered on a PCB (36) using SMT technic, then PCB (36) is installed on a base (37). On the base (37) has two shaft supports (36) and two shafts (39); also there are one idle roller support (40) and one ball hole (41); the idle roller support can fix the position of ball member (42) to make it close to the shaft (39) tightly. The components layout of present invention of mouse mechanism is similar to the U.S. Pat. No. 5,311,209, but shrink all components on the top of base (37).

In the front of this base (37) has two hooks, and one male clasp (44) on the end which is similar to the male clasp of bottom casing (31). At the bottom of bottom casing there is an opening (45) as the same size as the base (37). At the front of base opening (45) has a hook pedestal (46) in order to fix the base (37) to the hook (43). At the end of male clasp (34) of bottom casing (31) has one clasp (47) to hook up to the protuberance (48) of the male clasp (44) of the base (37). The hook (43) of the base (37) and the male clasp(44) of the present invention are designed to hook up the base (37) to the base opening (45) on the bottom casing easily. When separate the base (37) from the bottom casing (31), only need to push the male clasp (44) inward, the protuberance (48) of the male clasp (44) will depart from the clasp (47) of the bottom casing (31) in order to achieve the structure of easy installation and easy separation. Thus, the present invention is easy for maintenance and cleaning inside of mouse.

As shown on FIG. 4 and FIG. 5 is a perspective view of cable connect to the mechanism of the present invention and an enlarge perceptive view of the mechanism of the present invention. The mouse cable (50) of the present invention is an innovated design. The end of mouse cable (50) has a connector (52), and the top of the connector (52) has several slots (53). Each slot has a connecting spring (54), and at the end of each spring (54) has a connecting protuberance for touch to the touching point of the PCB (36). On the bottom of the base (37) has a preserve opening (51) as the same size of connector (52). The two side of connector (52) has four down hooks (55) in order to hook up to the preserve opening (51). When the connector install to the preserve opening on the bottom of base (37), the protuberance of the spring can connect to the preserve touching point is on the PCB (36) in order to be an interface for mouse and computer. On the other hand, at the center of front of bottom casing (31) has a preserve channel (49) which can put the mouse cable (50) into the mouse.

Referring to FIG. 6 and FIG. 7 is a portion diagrammatic of transmission transistor and receiving transistor of the base back of the present invention and a side section view of signal transfer using optical-reflecting theory in the present invention. The mouse control circuit of the present invention use the technic of SMT to adhere all components to the back of PCB 36). Those components include two LED (61) and four phototransistors (62). The present invention use the double-chip technical theory of U.S. Pat. No. 5,311,209 as basis which the light emitted from the LED (61) to the double-chip phototransistor (62), and used the rotation of the slotted wall on the shaft (39) to shield the light in order to have double-chip phototransistor to produce a sequential 90 degrees different signals in order to control the mouse. However, the present invention shrinks all mouse components on the top of the base (37), thus the light emitted from the LED (61) can't be received through the slotted disc. Of course, shrink the size of the shaft (39) can achieve the light to penetrate the slotted wall, but the size of shaft (39) will affect the resolution of mouse, so the present invention doesn't shrink the size of the shaft (39), but design two reflecting lens (64, 65) and installs these two lens on the rack (63) in a proper slope angle for light reflection (please refer to FIG. 7). Using the theory of optical reflection, the LED (61) emit light to the reflecting lens (64), and the reflecting lens (64) reflects the light to another reflecting lens (65) through the slotted wall of the shaft (39). the reflecting lens (65) reflects the light once again to the phototransistor (62). In this way, it can reach the same encoding effect as the U.S. Pat. No. 5,311,209. At the same time, using this optical reflection theory can enlarge the shaft (39) properly increasing the resolution of mouse.

As a conclusion of the above description, the present invention is shrinking all mouse components into a base as a mouse mechanism which can be used in different designs of casing; thus it can reduce the mouse developing cost efficiently, at the same time, it makes the production of mouse more effective and makes the maintenance and cleaning of mouse easier; also it can increase the resolution of mouse.

Many changes and modifications in the above described embodiment of the invention can, of course, be carried out without departing from the scope thereof. Accordingly, to promote the progress in science and the useful arts, the invention is disclosed and is intended to be limited only by the scope of the appended claims.