KR960001928Y1 - Optic-mechanical mouse - Google Patents

Abstract

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Description

Assembled Photomechanical Mouse Structure

1 is an exploded perspective view of a mouse structure according to the present invention.

2 is a partial exploded view according to FIG. 1, and FIGS. 3A to 3D are explanatory views showing the encoding operation of the optoelectronic set according to the present invention.

* Explanation of symbols for main parts of the drawings

10: upper cover 20: lower casing

21: staircase support 23: ball hole

24: roller support 30: circuit board

40 ball member 50 slotted disk

51: terminal protrusion 52: shaft portion

53 disk portion 531 slotted wall

532: slot 60: idler

70: photoelectric set 71: light emitting diode

72: phototransistor 73: light

The present invention relates to a photomechanical mouse structure, and more particularly, to a mouse structure that can be easily manufactured at low cost and lowers the rate of death of defective products.

Conventionally, a photomechanical mouse structure typically consists of two light emitting diodes, two phototransistors, grid means, and a ball member rotatably attached to a ball hole formed on a PC board, which ball member emits grid means. It operates to block or allow the path of light emitted from the diode to the phototransistor. These mouse structures are disclosed in US Pat. No. 4,464,652, which relates to a cursor control device comprising a single frame consisting of an idler wheel block, a detection block, and an encoder assembly hemispherical housing attached to a PC board.

In US Pat. No. 4,533,830, an optical encoder is disclosed that uses a shutter for shuttering a light source of one of two optical sensors indicating a negative motion or a positive motion. Moreover, in US Pat. No. 4,654,525, an optical rotary encoder using a sensing circuit and four photodiodes on a single substrate is disclosed. In US Pat. No. 4,705,943, a rotary optical encoder is disclosed that includes a reflector on one surface and two phototransistors arranged on either side of the emitting diode on the other surface.

Conventional devices all have the following disadvantages: (1) The circuit board attached to the lower casing of the mouse is as large as the lower casing, which wastes material and is expensive. (2) Components attached to the casing of the mouse, for example, the X, Y rotation axis, the disk with the slot, etc. are difficult to assemble, which makes the manufacture of the mouse complicated. (3) Slotted discs consist of parts made of different materials, so assembling them is a waste of labor and time. (4) The idler roller is installed on the roller post, and its installation is very difficult, so that automatic production of the mouse is almost impossible. (5) Idle rollers are mounted on roller posts and require more parts, which increases manufacturing costs.

In view of the above, the conventional mouse structure is not a good design and the cost is high. Moreover, the proportion of defective products is high.

Therefore, an object of the present invention is to provide a mouse structure that can be used to reduce the production cost and to easily manufacture products with low cost and low production rate.

According to the above object, the slotted disk of the present invention is integrally composed of the rotating shaft portion, the drive disk portion and the slotted disk portion, can be inserted directly into the shaft pillar. Furthermore, the idler is rotatably attached to the integral roller support. The circuit board is mated and fixed by a stepped support formed on the lower casing of the mouse, and the ball hole is formed in the center of the lower casing with the ball member located in the ball hole. The circuit board is located at the front of the lower casing and extends from the front end at the position of the slotted disk. One side of the circuit board adjacent to the slotted disk is formed of rectangular slots in the X and Y directions so that the light emitting diode and the phototransistor are disposed on two sides facing each slot.

Referring to FIG. 1, the photomechanical mouse structure according to the present invention includes an upper cover 10, a lower casing 20, a circuit board 30, a ball member 40, two slotted disks 50, and a shaft hole. It mainly comprises an idler 60 with 61 and two photovoltaic sets 70 each comprising a light emitting diode 71 and a double chip phototransistor. Here, the lower casing 20 is integrally formed with four staircase supports 21, two pairs of shaft pillars 22, a ball hole 23 and a roller support 24.

Referring to FIG. 2, the circuit board 30 is mated and fixed by a stepped support 21, and the ball hole 23, along with the ball member 40 located in the ball hole 23, is the central portion of the lower casing. Is formed. The circuit board 30 is located in the front part of the lower casing 20 and extends only from the front end to the position of the slotted disk 50. One side of the circuit board 30 adjacent to the slotted disk 50 is formed of rectangular slots 31 in the X direction and the Y direction so that the light emitting diode 71 and the phototransistor 72 are formed in each slot 31. It is arranged on two sides facing each other. The slotted disk 50 is integrally composed of a shaft portion 52 formed of a disk portion and two end projections 51 as a wall having a slot formed around the slot. The shaft column 22 is formed by the shaft hole 222 and the inclined slide channel 221 located thereon, whereby the slotted disk 50 is inclined of two facing shaft columns 22. It can be pushed through the sliding channel 221, during which the projection 51 of the projection 22 of the shaft portion 22 is inserted into the shaft hole 222 so that the slotted disk 50 is the shaft portion 52 Allow to rotate freely about its axis. The shaft portion 52 of the disk 50 having two slots is in contact with the ball member 52, and the disk portion 53 of the disk 50 having two slots has a rectangular slot 31 of the circuit board 30. Is allowed to rotate through. As a result, when the ball member 40 rotates, the slotted disk 50 is driven and rotated so that the slot of the slotted wall 531 of the slotted disk 50 is lighted from the light emitting diode 71. Blocking or allowing the path of light emitted to transistor 72 creates an encoding effect.

The roller support 24 is an S-shaped leaf spring having two upper upright portions and a rectangular recess formed therebetween. The engagement boss portion 242 is formed on each inner side of the upright portion for joining into the shaft hole 61 of the idle roller to attach the idle roller 60 on the roller support 24 so as to be free to rotate.

When the ball member 40 rotates, the idler roller 60 abuts on the ball member 40 and causes the ball member to come into close contact with the shaft portion 52 of the slotted disk.

Referring to FIG. 3, the slotted wall 531 along with the slot 532 blocks or allows the path of light 73 emitted from the light emitting diode 71 to the phototransistor 72. The width of the slotted wall 531 and the slot 532 is equal to the width of the chips 721 of the phototransistor 72 so that when the slotted disk 50 rotates, adjacent A of the phototransistor 72, Chip B produces two corresponding signals in four states: (1) Light 73 is completely shielded by slotted wall 531 and chips A and B are shown in FIG. The output of the AB chip due to its lack of light is indicated as follows: [AB / 00] (2) A portion of the light 73 is shielded by the slotted wall 531 and thus shown in FIG. The ground chip A cannot receive light and another portion of the light 73 is received by the chip B and passes through the slot 532. The outputs of chips A and B are indicated as follows: [AB / 01] (3) Slots 532 are aligned with chips A and B and both chips A and B receive light as shown in FIG. Thus, the outputs of the A and B chips are expressed as follows: [AB / 1 1] (4) A portion of the light 73 is shielded by the slotted wall 531 and Chip B cannot receive the light. Chip A receives a portion of light 73, as shown in 3d. The outputs of chips A and B are represented as follows: [AB / 1 0] When chip A of phototransistor 72 receives light, chip A is activated and the output of the signal processing circuit of circuit board 30 is High A pulse signal, indicated by [1]. When chip A is not shielded and operated by slotted wall 531, the output of the signal processing circuit is a low A pulse signal indicated by [0]. Chip B works similarly to chip A.

After combining the states of chips A and B, the above four states can be obtained. By the combination of the four states, the signal series of each of the A and B chips can be obtained. The rise and fall of the phase of the two signal series can determine whether the mouse is moved forward or backward. The combination can be exemplified in two forms: (1) If clockwise rotation of the slotted disk would be forward, then the combination sequence shown in Figure 3 is as follows: 3A-3B- 3C-3D-3A... … If the slotted disk is turned counterclockwise, it will be backward, so the combination sequence shown in Figure 3 is as follows: 3A-3D-3C-3B-3A. …

Claims (3)

Lower casing; An upper cover coupled to the upper lower casing; A circuit board surrounded by the lower casing and the upper cover; Ball member; Two slotted disks; Children rollers; And an optoelectronic mouse structure composed of a photovoltaic set formed of a light emitting diode and a double chip phototransistor, wherein the bottom casing is integrally comprised of two shaft pillars, a roller support, and a stepped support for mating the circuit board. Wherein the circuit board is located at the front of the lower casing and extends only from the front end to the position of the slotted disk, one side of the circuit board adjacent to the slotted disk being in the X direction and The light emitting diode and the phototransistor are formed in two sides facing each of the slots, each of which is formed of rectangular slots in a Y direction, and the slotted disk includes a disk portion formed by a slotted wall and two terminal protrusions. Consists of a shaft formed of a shaft, the shaft is the shaft hole and the upper Formed by one inclined slide channel, whereby the slotted disk can be pushed through the inclined slide channel of two facing shaft posts, during which the projection of the shaft portion is inserted into the shaft hole. The slotted disk is allowed to rotate freely about the axis of the shaft portion, the roller support is an S-shaped leaf spring having two upper upright portions and a rectangular recess formed therebetween, and the engaging boss portion is the idle Formed on each inner side of the upright portion to mate into the shaft hole of the roller, and freely rotatably attach the idler roller on the roller support, whereby the idler rotates the ball roller. The shaft of the disk in contact with the member, the ball member being slotted And closely in contact with the drive disc to the mouth portion structure characterized in that the rotation between the LED and phototransistor naedorok intermittent signal and encoding effect. The mouse structure according to claim 1, wherein the slotted disk is integrally formed with the disk portion and the shaft portion, and the sidewalls with the slots of the disk portion are disposed along an outer periphery of the disk portion. . 2. The dual chip phototransistor of claim 1, wherein the dual chip phototransistor has two adjacent chips, and if the slotted disk rotates to block or allow the path of light emitted from the light emitting diode to the phototransistor, the two adjacent chips. And wherein the chip produces a sensed or non-sensed signal and the mouse structure is determined to move forward or backward by the time difference between the sensed signals of the chip causing a continuous difference between the signals.