CN221827298U - Mouse main board assembly and mouse - Google Patents

Abstract

The utility model discloses a mouse main board component and a mouse, which can improve the left and right positioning precision of an encoder on a main board through the plug-in cooperation of a first fixed pin and a first fixed groove; the front and back positioning precision of the encoder on the main board can be improved through the plug-in matching of the two second fixing legs and the two second fixing grooves, so that the positioning and fixed installation of the encoder and the main board are realized, and the encoder is fixed on the main board through the three fixing legs, so that the installation stability is higher, the encoder can be prevented from easily falling down and falling off in the use process of the mouse, and the integral working precision of the mouse is improved; in addition, set up the protruding inner circle that comes spacing bearing of elasticity card at the end of rotating the section of thick bamboo, can improve the cooperation stability of bearing and rotating the section of thick bamboo, guarantee to rotate the section of thick bamboo smoothly to guarantee that the rotation of mouse gyro wheel is smooth and easy, with the holistic structural stability and the running stability of improvement mouse.

Description

Mouse main board assembly and mouse

Technical Field

The utility model relates to the technical field of mice, in particular to a mouse main board assembly and a mouse.

Background

With the popularization of computers, an important input device at the present stage, namely a mouse, has the basic form of a left button and a right button, and the middle roller realizes the functions of page turning up and down and the like. The mouse wheel is connected with the mouse encoder to drive the mouse wheel to rotate so as to realize the use function, the mouse encoder is usually assembled and fixed with the main board through fixing legs connected to the bottoms of the two narrow side walls, the stability of the assembly mode is poor, and the encoder is easy to topple or fall off in the use process of the mouse, so that the stability of the internal structure and the positioning accuracy of the mouse are affected.

Disclosure of utility model

The utility model mainly aims to provide a mouse main board component, which aims to solve the technical problem of how to improve the installation stability and positioning accuracy of an encoder on a main board.

In order to achieve the above object, the present utility model provides a mouse motherboard assembly comprising:

The main board is provided with a first fixing groove and two second fixing grooves, and the first fixing groove is positioned between the two second fixing grooves;

The encoder comprises a shell, wherein a first fixed foot and two second fixed feet are convexly arranged at the bottom of the shell, the two second fixed feet are respectively close to two side walls in the width direction of the shell, and the first fixed foot is positioned between the two second fixed feet; the first fixing feet are fixedly inserted into the first fixing grooves, and the two second fixing feet are respectively inserted into the two second fixing grooves.

Optionally, the width dimension of the housing is greater than the thickness dimension, the width direction of the first fixing leg is consistent with the width direction of the housing, and the width direction of the second fixing leg is consistent with the thickness direction of the housing.

Optionally, the encoder further comprises a grating component and a circuit board, the shell is provided with a mounting cavity and a connecting hole, the mounting cavity is communicated with the connecting hole, and the connecting hole is used for being connected with a rotating shaft of the mouse wheel;

The grating component is rotatably arranged in the mounting cavity and comprises a rotating cylinder and a grating disk sleeved outside the rotating cylinder, and the rotating cylinder and the connecting hole are coaxially arranged so as to be connected with a rotating shaft of the mouse roller; the grating disk is provided with a plurality of light-transmitting grooves which are distributed at intervals along the circumferential direction;

The circuit board is installed in the installation cavity, the circuit board electricity is connected with light emitter and light receiver, the circuit board with the mainboard electricity is connected, switch on between light emitter and the light receiver forms the light path, when rotating the section of thick bamboo, the grating dish is driven by the section of thick bamboo that rotates so that the grating dish is blocked or is exposed the light path.

Optionally, the circuit board is flexible circuit board, flexible circuit board include the board body and with board body coupling's flexible line row, flexible line row keep away from the one end of board body is followed the bottom of casing is worn out, flexible line row keep away from the one end of board body be used for with the mainboard grafting.

Optionally, the shell comprises a first shell wall and a second shell wall which are oppositely arranged along the thickness direction, the first fixing feet are convexly arranged on the first shell wall, the circuit board is close to the second shell wall, an avoidance groove is formed in the bottom of the second shell wall, and one end, far away from the board body, of the flexible line bank penetrates out of the avoidance groove; the first fixing pin is provided with a via hole, and the via hole is used for the flexible line to pass through.

Optionally, the first fixing leg includes connecting portion and grafting portion, the top of connecting portion connect in first shell wall, the bottom of grafting portion connect in grafting portion, grafting portion locates in the first fixed slot, the via hole set up in connecting portion, the width of connecting portion is greater than the width of grafting portion.

Optionally, the encoder further comprises a bearing, an outer ring of the bearing is fixed in the shell, and an inner ring of the bearing is fixedly matched with the rotating cylinder.

Optionally, the outer peripheral wall at the tail end of the rotating cylinder is provided with an elastic clamping protrusion, one end of the inner ring of the bearing is abutted to the elastic clamping protrusion, and the other end of the inner ring of the bearing is abutted to the grating disk.

Optionally, a deformation groove is formed at the end of the rotary cylinder, and the deformation groove is used for elastically deforming along the radial direction when the end of the rotary cylinder is extruded.

The utility model also provides a mouse which comprises the mouse main board component.

According to the technical scheme of the mouse main board component, the fixed installation of the encoder and the main board is realized through the plug-in matching of the first fixing feet and the first fixing grooves and the plug-in matching of the two second fixing feet and the two second fixing grooves, and the encoder is fixed on the main board through the three fixing feet, so that the installation stability and the positioning accuracy are higher, the encoder can be prevented from easily falling down or falling off in the using process of the mouse, and the integral structural stability and the running stability of the mouse are improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a mouse motherboard assembly according to an embodiment of the present utility model;

FIG. 2 is a schematic exploded view of an embodiment of a mouse motherboard assembly in accordance with the present utility model;

FIG. 3 is a schematic cross-sectional view of an embodiment of a motherboard assembly in accordance with the present utility model;

FIG. 4 is an exploded view of an embodiment of an encoder according to the present utility model;

FIG. 5 is an exploded view of another embodiment of an encoder according to the present utility model;

FIG. 6 is a schematic cross-sectional view of an embodiment of an encoder according to the present utility model.

Reference numerals illustrate:

Reference numerals	Name of the name	Reference numerals	Name of the name	Reference numerals	Name of the name
						10	Main board	11	First fixing groove	12	Second fixing groove
20	Encoder with a plurality of sensors	21	Shell body	22	First fixed leg
						23	Second fixing leg	241	Rotary cylinder	242	Grating disc
243	Light-transmitting groove	211	Connecting hole	25	Circuit board
						251	Board body	252	Flexible line row	26	First shell wall
27	Second shell wall	271	Avoidance groove	221	Via hole
						222	Connecting part	223	Plug-in part	28	Positioning frame
281	First fixing column	261	First fixing hole	29	Bearing
						244	Elastic clamp protrusion	245	Deformation groove

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "a and/or B", including a scheme, or B scheme, or a scheme that is satisfied by both a and B. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

With the popularization of computers, an important input device at the present stage, namely a mouse, has the basic form of a left button and a right button, and the middle roller realizes the functions of page turning up and down and the like. The mouse wheel is connected with the mouse encoder to drive the mouse wheel to rotate so as to realize the use function, the mouse encoder is usually assembled and fixed with the main board through fixing feet connected to the bottoms of the two narrow side walls, the stability of the assembly mode is poor, and the encoder is easy to topple or fall off in the use process of the mouse, so that the stability of the internal structure and the operation stability of the mouse are influenced.

The utility model provides a mouse main board component, which aims to solve the technical problems of how to improve the installation stability and the accurate positioning of an encoder 20 on a main board 10.

In the embodiment of the present utility model, as shown in fig. 1 to 3, fig. 1 is a schematic structural diagram of an embodiment of a mouse motherboard assembly of the present utility model; FIG. 2 is a schematic exploded view of an embodiment of a mouse motherboard assembly in accordance with the present utility model; FIG. 3 is a schematic cross-sectional view of an embodiment of a mouse motherboard assembly in accordance with the present utility model.

The mouse main board component comprises: the main board 10 is provided with a first fixing groove 11 and two second fixing grooves 12, and the first fixing groove 11 is positioned between the two second fixing grooves 12; the encoder 20, the encoder 20 includes a housing 21, a first fixing leg 22 and two second fixing legs 23 are convexly disposed at the bottom of the housing 21, the two second fixing legs 23 are respectively close to two side walls in the width direction of the housing 21, and the first fixing leg 22 is located between the two second fixing legs 23; the first fixing leg 22 is fixedly inserted into the first fixing slot 11, and the two second fixing legs 23 are respectively inserted into the two second fixing slots 12.

In this embodiment, the motherboard 10 is a circuit board, specifically a hard circuit board, and the motherboard 10 can provide power for the encoder 20 and transmit signals. The encoder 20 may be a mechanical encoder 20 or a grating encoder 20, and is not limited herein. The first fixing leg 22 and the second fixing leg 23 are both protruding at the bottom of the casing 21, where the casing 21 may include a first side wall and a second side wall that are disposed opposite to each other along a width direction, and the two second fixing legs 23 may be connected to bottom ends of the first side wall and the second side wall, respectively, and the first fixing leg 22 and the two second fixing legs 23 enable the encoder 20 to stand on the motherboard 10 together, so that a connection position between the encoder 20 and the motherboard 10 may be increased, and thus an installation stability of the encoder 20 may be improved.

Specifically, as shown in fig. 2, the width dimension of the housing 21 is larger than the thickness dimension, the width direction of the first fixing leg 22 coincides with the width direction of the housing 21, and the width direction of the second fixing leg 23 coincides with the thickness direction of the housing 21. The shape and size of the first fixing groove 11 correspond to those of the first fixing foot 22, and the shape and size of the second fixing groove 12 correspond to those of the first fixing foot 22.

The width direction of the case 21 may be regarded as the left-right direction, the thickness direction of the case 21 may be regarded as the front-rear direction, and the width direction of the case 21 is perpendicular to the thickness direction, so that the width direction of the first fixing leg 22 is perpendicular to the width direction of the second fixing leg 23, and thus, the fitting area of the first fixing leg 22 with the main board 10 in the left-right direction and the fitting area of the second fixing leg 23 with the main board 10 in the front-rear direction may be increased, thereby improving the positioning stability and positioning accuracy of the encoder 20 on the main board 10, and further preventing the encoder 20 from tilting or shaking forward and backward or left-right.

As shown in fig. 4 and 5, fig. 4 is an exploded view of an embodiment of encoder 20 according to the present utility model; fig. 5 is an exploded view of another embodiment of encoder 20 according to the present utility model.

The encoder 20 further comprises a grating component and a circuit board 25, the shell 21 is provided with a mounting cavity and a connecting hole 211, the mounting cavity is communicated with the connecting hole 211, and the connecting hole 211 is used for connecting with a rotating shaft of a mouse roller; the grating component is rotatably arranged in the mounting cavity and comprises a rotating cylinder 241 and a grating disk 242 sleeved outside the rotating cylinder 241, and the rotating cylinder 241 and the connecting hole 211 are coaxially arranged for connecting the rotating shaft of the mouse roller; the grating disk 242 has a plurality of light-transmitting grooves 243 circumferentially spaced apart; the circuit board 25 is installed in the installation cavity, the circuit board 25 is electrically connected with a light emitter and a light receiver, the circuit board 25 is electrically connected with the main board 10 of the mouse, the light emitter and the light receiver are conducted to form a light path, and when the rotating cylinder 241 rotates, the grating disk 242 is driven by the rotating cylinder 241 so that the grating disk 242 blocks or exposes the light path.

In this embodiment, by manually pulling the mouse wheel, the force is generated to rotate the grating member (due to the insertion of the rotation shaft of the mouse wheel and the rotation tube 241). The circuit board 25 is electrically connected to the main board 10 to achieve a conductive state, and then the rotation shaft of the mouse wheel is inserted into the rotation cylinder 241 from the connection hole 211, and the mouse wheel and the grating member are in a coaxial state. Therefore, when the mouse wheel is driven to rotate by a user, the mouse wheel can drive the grating disk 242 connected with the mouse wheel to synchronously rotate along with the rotation shaft. At this time, the grating 242 may first block the optical path formed between the optical transmitter and the optical receiver and then re-expose the optical path, and the circuit board 25 may detect that the optical signal of the optical path changes first, so as to identify the rolling state of the mouse wheel, so that the mouse can complete the corresponding command input operation according to the rolling of the mouse wheel.

It should be noted that, in some embodiments, the optical receiver may be provided with two units integrated on the same component, a first receiving unit and a second receiving unit, where the first receiving unit corresponds to "clockwise rotation of the grating disk 242" and the second receiving unit corresponds to "counterclockwise rotation of the grating disk 242". When the mouse wheel is driven by a user to rotate anticlockwise, the mouse wheel can drive the grating disk 242 connected with the mouse wheel to rotate synchronously. At this time, the grating 242 may first block the second optical path formed between the optical transmitter and the second receiving unit and then re-expose the optical path, and the circuit board 25 may detect that the optical signal of the second optical path changes, so as to identify the counterclockwise rotation of the mouse wheel, so that the mouse can complete the corresponding command input operation according to the counterclockwise rolling of the mouse wheel.

The material of the housing 21 may be plastic, metal, or a combination of plastic and metal. The plastic housing 21 is relatively lightweight to facilitate reducing the overall volume of the mouse for ease of use by a user. The metal shell 21 has relatively strong strength, which is beneficial to prolonging the service life of the shell 21. Thus, in some embodiments, part of the material may be metal, and part of the material may be plastic.

The optical transmitter and the optical receiver may be fixed to the circuit board 25 by soldering so as to achieve electrical connection while achieving mechanical connection. Of course, in some embodiments, the optical transmitter and the optical receiver may also be fixedly connected to the circuit board 25 by plugging.

The circuit board 25 may be a hard circuit board 25 or a flexible circuit board 25, which is not limited herein.

Specifically, as shown in fig. 4 and 5, the circuit board 25 is a flexible circuit board 25, the flexible circuit board 25 includes a board body 251 and a flexible line bank 252 connected to the board body 251, one end of the flexible line bank 252 away from the board body 251 is penetrated from the bottom of the housing 21, and one end of the flexible line bank 252 away from the board body 251 is used for plugging with the motherboard 10.

The board body 251 has a certain elasticity compared with the conventional printed circuit board 25, and the main body material thereof can be a hard rubber body, and the board body 251 is embedded with a circuit structure. When the plate body 251 is clamped, certain elastic deformation can occur, so that the degree of adhesion of the plate body 251 and the housing 21 is improved, the light emitter and the light receiver arranged on the plate body can be matched with the grating disk 242 better, and meanwhile, the stability of the clamped plate body 251 is improved. The flexible line bank 252 is a flexible conductor, and one end of the flexible line bank, which is far away from the board body 251, is provided with a plug connector, and the plug connector can be directly plugged into an electric connection port on the mouse main board 10; when the plug connector needs to be disassembled, the plug connector is directly pulled out of the interface from the power connection port. In this way, compared with the conventional printed circuit board 25, the flexible circuit board 25 in this embodiment can be very conveniently and reliably connected with the mouse motherboard 10, and meanwhile, the reliability problem and risk caused by welding and other processes can be avoided, so that the electrical connection process of the encoder 20 and the mouse motherboard 10 is greatly simplified.

As shown in fig. 4 and 5, the housing 21 includes a first housing wall 26 and a second housing wall 27 that are opposite to each other in a thickness direction, the first fixing leg 22 is convexly disposed on the first housing wall 26, the circuit board 25 is close to the second housing wall 27, a avoidance groove 271 is formed at a bottom of the second housing wall 27, and an end of the flexible wire array 252, which is far from the board body 251, is penetrated from the avoidance groove 271; the first fixing leg 22 is provided with a via hole 221, and the via hole 221 is used for the flexible line bank 252 to pass through.

The main board 10 is provided with a connecting seat for inserting the flexible line 252, the position of the connecting seat is fixed, if the encoder 20 is just the second shell wall 27 is close to the connecting seat when being installed on the main board 10, the flexible line 252 can be inserted into the connecting seat directly without passing through the through hole 221 after passing out of the avoidance groove 271; if the encoder 20 is mounted on the motherboard 10 just with the first housing wall 26 close to the connection base, i.e. the second housing wall 27 relatively far away from the connection base, the flexible wire array 252 may be inserted into the connection base after passing through the via 221. Therefore, the front and back directions of the mouse encoder 20 relative to the connecting seat can be not considered when the encoder 20 is installed, so that the installation convenience is improved.

Specifically, as shown in fig. 4 and 5, the first fixing leg 22 includes a connection portion 222 and an insertion portion 223, the top of the connection portion 222 is connected to the first shell wall 26, the bottom of the insertion portion 223 is connected to the insertion portion 223, the insertion portion 223 is disposed in the first fixing groove 11, the via hole 221 is disposed in the connection portion 222, and the width of the connection portion 222 is greater than the width of the insertion portion 223. Setting the width of the connection portion 222 to be larger than the plugging portion 223 can enable the connection portion 222 to provide more open area for the via hole 221, so that the aperture of the via hole 221 can be increased to facilitate the flexible line bank 252 to pass through; in addition, since the width of the insertion portion 223 is smaller than that of the connection portion 222, interference with the second fixing leg 23 during processing can be avoided, so that processing difficulty can be reduced.

In practical applications, as shown in fig. 4 and 5, the housing 21 further includes a positioning frame 28 disposed between the first housing wall 26 and the second housing wall 27, the grating component is rotatably mounted on the positioning frame 28, the positioning frame 28 is convexly provided with a first fixing post 281, the first housing wall 26 is provided with a first fixing hole 261, and the first fixing post 281 is fixedly matched with the first fixing hole 261; and/or, the positioning frame 28 is provided with a second fixing column in a protruding manner, the second casing wall 27 is provided with a second fixing hole, and the second fixing column is fixedly matched with the second fixing hole. When the encoder 20 is assembled, the grating component can be firstly installed on the positioning frame 28, and then the first shell wall 26 and the second shell wall 27 are respectively connected to two opposite sides of the positioning frame 28, so that the whole assembly process of the encoder 20 can be simplified, and the assembly efficiency can be improved.

The encoder 20 may be mounted on the main board 10 in a non-detachable manner or in a detachable manner.

Illustratively, the first fixing leg 22 is detachably inserted into the first fixing slot 11, and the second fixing leg 23 is detachably inserted into the second fixing slot 12. In this way, the encoder 20 can be detachably mounted on the main board 10, so as to facilitate maintenance and replacement of the encoder 20.

The second fixing leg 23 and the main board 10 can be detachably connected in a fixed fit manner, and can also be detachably connected in a clamping fit manner.

Specifically, the second fixing leg 23 is provided with a clamping portion, and the clamping portion is clamped and fixed with the second fixing groove 12. The clamping part is matched with the second fixing groove 12 in a clamping way, so that the dismounting mode of the second fixing leg 23 and the main board 10 is simplified, and the dismounting convenience is improved.

Exemplary, as shown in fig. 6, fig. 6 is a schematic cross-sectional view of an embodiment of an encoder 20 according to the present utility model. The encoder 20 further comprises a bearing 29, wherein an outer ring of the bearing 29 is fixed in the housing 21, and an inner ring of the bearing 29 is fixedly matched with the rotary cylinder 241. The bearing 29 includes an inner ring, an outer ring, and balls disposed between the inner ring and the outer ring, and the bearing 29 can realize rotational installation of the grating member in the housing 21, and improve rotational stability and smoothness of the grating member, thereby improving rotational smoothness of a mouse wheel connected to the rotary cylinder 241.

Specifically, as shown in fig. 6, an elastic locking protrusion 244 is provided on the outer peripheral wall of the end of the rotary cylinder 241, and one end of the inner ring of the bearing 29 abuts against the elastic locking protrusion 244, and the other end abuts against the grating disk 242. The inner ring of the bearing 29 is limited between the elastic clamping convex 244 and the grating disk 242, so that the matching stability of the bearing 29 and the rotating cylinder 241 can be improved, and the matching difficulty of the inner ring of the bearing 29 and the rotating cylinder 241 can be reduced.

In practical application, as shown in fig. 6, a deformation groove 245 is formed at the end of the rotary cylinder 241, and the deformation groove 245 is used for elastically deforming along the radial direction when the end of the rotary cylinder 241 is pressed. When the bearing 29 is assembled on the rotating cylinder 241, one end of the rotating cylinder 241, which is convexly provided with the elastic clamping convex 244, can be penetrated into the inner ring of the bearing 29, and under the extrusion action of the inner ring of the bearing 29, the tail end of the rotating cylinder 241 is elastically deformed along the radial direction, so that the elastic clamping convex 244 can penetrate through the inner ring of the bearing 29, and the assembly convenience of the bearing 29 and the rotating cylinder 241 is improved.

The utility model also provides a mouse which comprises a mouse main board component, and the specific structure of the mouse main board component refers to the embodiment, and as the mouse adopts all the technical schemes of all the embodiments, the mouse has at least all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted.

In the technical scheme of the mouse main board component, the fixed installation of the encoder 20 and the main board 10 is realized through the plug-in matching of the first fixing feet 22 and the first fixing grooves 11 and the plug-in matching of the two second fixing feet 23 and the two second fixing grooves 12, and the encoder 20 is fixed on the main board 10 through three fixing feet, so that the installation stability is higher, the encoder 20 can be prevented from easily falling down or falling off in the using process of the mouse, and the integral structural stability and the positioning precision of the mouse are improved.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A mouse motherboard assembly, comprising:

The main board is provided with a first fixing groove and two second fixing grooves, and the first fixing groove is positioned between the two second fixing grooves;

The encoder comprises a shell, wherein a first fixed foot and two second fixed feet are convexly arranged at the bottom of the shell, the two second fixed feet are respectively close to two side walls in the width direction of the shell, and the first fixed foot is positioned between the two second fixed feet; the first fixing feet are fixedly inserted into the first fixing grooves, and the two second fixing feet are respectively inserted into the two second fixing grooves.

2. The mouse motherboard assembly of claim 1 wherein said housing has a width dimension greater than a thickness dimension, said first securing leg having a width direction coincident with a width direction of said housing, said second securing leg having a width direction coincident with a thickness direction of said housing.

3. The mouse motherboard assembly as recited in claim 2 wherein said encoder further comprises a grating member and a circuit board, said housing having a mounting cavity and a connecting aperture, said mounting cavity in communication with said connecting aperture, said connecting aperture for connection with a rotational shaft of a mouse wheel;

The grating component is rotatably arranged in the mounting cavity and comprises a rotating cylinder and a grating disk sleeved outside the rotating cylinder, and the rotating cylinder and the connecting hole are coaxially arranged so as to be connected with a rotating shaft of the mouse roller; the grating disk is provided with a plurality of light-transmitting grooves which are distributed at intervals along the circumferential direction;

The circuit board is installed in the installation cavity, the circuit board electricity is connected with light emitter and light receiver, the circuit board with the mainboard electricity is connected, switch on between light emitter and the light receiver forms the light path, when rotating the section of thick bamboo, the grating dish is driven by the section of thick bamboo that rotates so that the grating dish is blocked or is exposed the light path.

4. The mouse motherboard assembly of claim 3 wherein said circuit board is a flexible circuit board comprising a board body and a flexible wire row connected to said board body, an end of said flexible wire row remote from said board body passing out of the bottom of said housing, an end of said flexible wire row remote from said board body for plugging with said motherboard.

5. The mouse main board assembly according to claim 4, wherein the shell comprises a first shell wall and a second shell wall which are oppositely arranged along the thickness direction, the first fixing feet are convexly arranged on the first shell wall, the circuit board is close to the second shell wall, an avoidance groove is formed in the bottom of the second shell wall, and one end, far away from the board body, of the flexible line row penetrates out of the avoidance groove; the first fixing pin is provided with a via hole, and the via hole is used for the flexible line to pass through.

6. The mouse motherboard assembly of claim 5, wherein the first fixing leg comprises a connection portion and a plugging portion, the top of the connection portion is connected to the first shell wall, the bottom of the plugging portion is connected to the plugging portion, the plugging portion is disposed in the first fixing groove, the via hole is disposed in the connection portion, and the width of the connection portion is greater than the width of the plugging portion.

7. The mouse motherboard assembly of claim 3 wherein said encoder further comprises a bearing, an outer race of said bearing being secured within said housing, an inner race of said bearing being fixedly mated with said rotating barrel.

8. The mouse motherboard assembly of claim 7, wherein an elastic clamping protrusion is arranged on the peripheral wall of the tail end of the rotating cylinder, and one end of the inner ring of the bearing is abutted against the elastic clamping protrusion, and the other end of the inner ring of the bearing is abutted against the grating disk.

9. The mouse motherboard assembly as recited in claim 8 wherein the distal end of the rotating barrel is provided with a deformation groove for elastic deformation in a radial direction when the distal end of the rotating barrel is pressed.

10. A mouse comprising the mouse motherboard assembly as recited in any one of claims 1 to 9.