Non-contact key potential module

Abstract

The invention discloses a non-contact key potential module, which comprises a shell, a PCB (Printed Circuit Board) is arranged in the shell, a rotating shaft is arranged in the shell, and one end of the rotating shaft extends out of the shell and is provided with a driving end; a light-transmitting hole is formed in the rotating shaft in the shell; and a light-emitting element and a light-sensitive element are respectively arranged on the PCB on the two sides of the light-transmitting hole. Compared with the prior art, the non-contact type key potential module has the advantages that the non-contact type key potential module is small in number of components, small in size and long in service life, can be well matched with a game handle trigger key with the pressing direction parallel to a PCB, and can still be applied to a common key with the pressing direction perpendicular to the PCB.

Description

Technical Field

[0001] The present invention relates to a key, and more particularly to a non-contact key potential module. Background Art

[0002] Due to the problems that traditional mechanical and contact keys are prone to damage and poor contact, optical keys have gradually replaced traditional mechanical and contact keys in recent years. However, the existing optical key modules not only have a relatively complex structure design, many components, and a large volume, but also are only suitable for the use of ordinary conventional up-and-down keys and cannot be used on some specific keys. For example, the invention patent with the Chinese patent publication number CN 218886918 U and the name of "an optical potentiometer module" discloses an optical potentiometer module, which includes a potentiometer seat body with a key slot and a potentiometer key installed in the key slot that can be displaced up and down. A reset member for resetting the potentiometer key is also provided in the key slot. It also includes an optical pair tube composed of a photosensitive element and a light-emitting element. A grating is configured on the potentiometer key corresponding to the optical path of the optical pair tube. The grating is configured to be able to change the light flux received by the photosensitive element from the light-emitting element as the potentiometer key is displaced up and down, so that the electrical signal generated by the photosensitive element changes with the displacement of the potentiometer key. This type of key module can only be used for keys whose pressing direction is perpendicular to the PCB board and cannot be applied to trigger keys such as those on game controllers. Generally, the key caps of trigger keys are located on both sides of the front end of the game controller, and their pressing direction is parallel to the PCB main control board. Therefore, the existing optical potentiometer modules not only have a large volume but also cannot adapt to the pressing direction of game controller trigger keys. Therefore, developing a non-contact key potential module has become an urgent problem for those skilled in the art. Summary of the Invention

[0003] The present invention is to solve the above deficiencies and provides a non-contact key potential module.

[0004] The above object of the present invention is achieved by the following technical solution: A non-contact key potential module includes a housing, and a PCB board is provided in the housing. It is characterized in that: a rotating shaft is installed in the housing, one end of the rotating shaft extends out of the housing and is provided with a driving end, and a light-transmitting hole is provided on the rotating shaft located in the housing. A light-emitting element and a photosensitive element are respectively provided on the PCB board on both sides of the light-transmitting hole.

[0005] The above object of the present invention is achieved by the following another technical solution: A non-contact key potential module includes a housing, and a PCB board is provided in the housing. It is characterized in that: a rotating shaft is installed in the housing, one end of the rotating shaft extends out of the housing and is provided with a driving end, and a light-shielding portion is provided on the rotating shaft located in the housing. A light-emitting element and a photosensitive element are respectively provided on the PCB board on both sides of the light-shielding portion.

[0006] The above object of the present invention is achieved by another technical solution as follows: A non-contact key potentiometer module includes a housing, and a PCB board is provided inside the housing. It is characterized in that: A rotating shaft is installed in the housing, one end of the rotating shaft extends out of the housing, and a driving end is provided. A reflecting surface is provided on the rotating shaft located inside the housing, and a light-emitting element and a photosensitive element or an infrared transmitting and receiving integrated tube are provided on the PCB board on one side of the reflecting surface.

[0007] The above object of the present invention is achieved by yet another technical solution as follows: A non-contact key potentiometer module includes a housing, and a PCB board is provided inside the housing. It is characterized in that: A rotating shaft is installed in the housing, one end of the rotating shaft extends out of the housing, and a driving end is provided; A magnet is provided radially on the rotating shaft located inside the housing, and a Hall element is provided on the PCB board on one side of the magnet.

[0008] Further, the driving end is a rod body, and one end of it is fixedly connected to the outer end of the rotating shaft extending out of the housing.

[0009] Further, the driving end is a gear, and the gear is fixedly connected to the outer end of the rotating shaft extending out of the housing.

[0010] Further, the optical key module includes a key cap. The bottom of the key cap abuts against the upper end of the driving end, or a hinged end provided at the bottom of one side of the key cap is hinged to the upper end of the driving end, and the other side is rotatably connected to the device housing.

[0011] Further, a reset device is provided on the rotating shaft.

[0012] Further, the reset device is a torsion spring. The torsion spring is sleeved on the rotating shaft, and one end of the torsion spring is fixed on the rotating shaft, and the other end is fixed on the housing.

[0013] Further, the reset device includes a pair of attracting magnets. One magnet is fixed to the bottom end of the light-shielding part of the rotating shaft at the initial position, and the other magnet is fixed directly below the light-shielding part at the initial position.

[0014] Further, the PCB board is provided with pins or a wiring harness for electrical connection.

[0015] Further, the housing includes a main housing and a housing cover. The main housing and the housing cover are snapped together through a snap structure, or are connected to each other by screws.

[0016] The advantages of the present invention compared with the prior art are: The non-contact key potentiometer module of the present invention not only has few components, small volume, and long service life, but also can be well adapted to the trigger key of a game controller whose pressing direction is parallel to the PCB main control board, and can still be applied to ordinary keys whose pressing direction is perpendicular to the PCB main control board. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the external structure of the first embodiment of the present invention.

[0018] Figure 2 It is a schematic exploded view of the first embodiment of the present invention.

[0019] Figure 3 It is a schematic diagram of an assembled and used state of the present invention.

[0020] Figure 4 It is another schematic diagram of an assembled and used state of the present invention.

[0021] Figure 5 It is a schematic diagram of the external structure of another style of the first embodiment of the present invention.

[0022] Figure 6 It is a schematic exploded view of another style of the first embodiment of the present invention Figure 1 .

[0023] Figure 7 It is a schematic exploded view of another style of the first embodiment of the present invention Figure 2 .

[0024] Figure 8 It is a schematic exploded view of the second embodiment of the present invention.

[0025] Figure 9 It is a schematic diagram of the internal structure of the second embodiment of the present invention.

[0026] Figure 10 It is a schematic exploded view of one side angle of the third embodiment of the present invention.

[0027] Figure 11 It is a schematic exploded view of the other side angle of the third embodiment of the present invention.

[0028] Figure 12 It is a schematic diagram of the structure of one side angle of the third embodiment of the present invention using another optical element.

[0029] Figure 13 It is a schematic diagram of the structure of the other side angle of the third embodiment of the present invention using another optical element.

[0030] Figure 14 It is a schematic diagram of the structure of the fourth embodiment of the present invention.

[0031] Figure 15 It is a schematic diagram of the structure of the fifth embodiment of the present invention. Detailed implementation manners

[0032] The present invention will be further described in detail below with reference to the accompanying drawings.

[0033] Embodiment 1: AsFigures 1 to 4 As shown, a non-contact key potential module includes a housing 1, and the housing 1 includes a main housing 101 and a housing cover 102. The main housing 101 and the housing cover 102 are fastened by a snap structure or connected to each other by screws. A PCB board 2 is provided inside the housing 1, and the PCB board 2 is provided with pins 201 or a wire harness for electrical connection. A rotating shaft 3 is installed in the housing 1. One end of the rotating shaft 3 extends out of the housing 1 and is provided with a driving end 301. The driving end 301 is a rod body, and one end thereof is fixedly connected to the outer end of the rotating shaft 3 extending out of the housing. A light-transmitting hole 302 is provided on the rotating shaft 3 located inside the housing 1. A light-emitting element 4 and a photosensitive element 5 are respectively provided on the PCB board 2 on both sides of the light-transmitting hole 302. When assembled and used, the optical key module further includes a key cap 6, and the bottom of the key cap 6 abuts against the upper end of the driving end 301( Figure 3 ), or a hinged end 601( Figure 4 ) provided at one side bottom of the key cap 6 is hinged to the upper end of the driving end 301, and the other side is rotatably connected to the device housing.

[0034] As shown in Figure 5 , Figure 6 and Figure 7 , it is a schematic structural diagram of another style of Embodiment 1.

[0035] During operation, when the key cap 6 is pressed down, the driving end 301 is pressed down to rotate the rotating shaft 3, thereby changing the inclination angle of the light-transmitting hole 302, changing the amount of light passing through the light-transmitting hole 302, then changing the amount of light received by the photosensitive element 5, and converting it into a corresponding digital quantity (resistance value) through the photosensitive element 5. The digital quantity (resistance value) signal is transmitted to the single-chip microcomputer on the PCB board 2, and the single-chip microcomputer gives a corresponding execution instruction after analysis.

[0036] Embodiment 2: As shown in Figure 8 , Figure 9 , a non-contact key potential module includes a housing 1, and the housing 1 includes a main housing 101 and a housing cover 102. The main housing 101 and the housing cover 102 are fastened by a snap structure or connected to each other by screws. A PCB board 2 is provided inside the housing 1, and the PCB board 2 is provided with pins 201 or a wire harness for electrical connection. A rotating shaft 3 is installed in the housing 1. One end of the rotating shaft 3 extends out of the housing 1 and is provided with a driving end 301. The driving end 301 is a rod body, and one end thereof is fixedly connected to the outer end of the rotating shaft 3 extending out of the housing. A light-shielding portion 303 is provided on the rotating shaft 3 located inside the housing 1. A light-emitting element 4 and a photosensitive element 5 are respectively provided on the PCB board 2 on both sides of the light-shielding portion 303. When assembled and used, referring to Figure 3 , Figure 4 , the optical key module further includes a key cap 6, and the bottom of the key cap 6 abuts against the upper end of the driving end 301(Figure 3 ) or the hinge end 601 provided at the bottom of one side of the keycap 6 Figure 4 ), and is hinged to the upper end of the driving end 301, and the other side is rotatably connected to the device housing.

[0037] During operation, when the keycap 6 is pressed down, the driving end 301 is pressed down to rotate the rotating shaft 3, thereby changing the inclination angle of the light-shielding portion 303, changing the amount of light blocked by the light-shielding portion 303, and then changing the amount of light received by the photosensitive element 5, and converting it into a corresponding digital quantity (resistance value) through the photosensitive element 5. This digital quantity (resistance value) signal is transmitted to the single-chip microcomputer on the PCB board 2, and the single-chip microcomputer gives corresponding execution instructions after analysis.

[0038] Embodiment 3: As Figures 10 to 13 shown, a non-contact key potentiometer module includes a housing 1, the housing 1 includes a main housing 101 and a housing cover 102, the main housing 101 and the housing cover 102 are fastened by a snap structure or connected to each other by screws. A PCB board 2 is provided in the housing 1, and the PCB board 2 is provided with pins 201 or a wire harness for electrical connection. A rotating shaft 3 is installed in the housing 1. One end of the rotating shaft 3 extends out of the housing 1 and is provided with a driving end 301. The driving end 301 is a rod body, and one end thereof is fixedly connected to the outer end of the rotating shaft 3 extending out of the housing. A reflecting surface 304 is provided on the rotating shaft 3 located in the housing 1. A light-emitting element 4 and a photosensitive element 5 are provided on the PCB board 2 on one side of the reflecting surface 304 Figure 10 , Figure 11 shown) or an infrared transmitting and receiving integrated tube 7 Figure 12 , Figure 13 shown). When assembled and used, referring to Figure 3 , Figure 4 , the optical key module further includes a keycap 6, the bottom of the keycap 6 abuts against the upper end of the driving end 301 Figure 3 ), or the hinge end 601 provided at the bottom of one side of the keycap 6 Figure 4 ), and is hinged to the upper end of the driving end 301, and the other side is rotatably connected to the device housing.

[0039] During operation, when the keycap 6 is pressed down, the driving end 301 is pressed down to rotate the rotating shaft 3, thereby changing the inclination angle of the reflecting surface 304, changing the amount of light reflected by the reflecting surface 304, and then changing the amount of light received by the photosensitive element 5 or the infrared transmitting and receiving integrated tube 7, and converting it into a corresponding digital quantity (resistance value) through the photosensitive element 5. This digital quantity (resistance value) signal is transmitted to the single-chip microcomputer on the PCB board 2, and the single-chip microcomputer gives corresponding execution instructions after analysis.

[0040] Embodiment 4: As Figure 14As shown, a non-contact button potential module includes a housing 1, and the housing 1 includes a main housing 101 and a housing cover 102. The main housing 101 and the housing cover 102 are fastened by a snap structure or connected to each other by screws. A PCB board 2 is provided inside the housing 1. The PCB board 2 is provided with pins 201 or a cable for electrical connection. A rotating shaft 3 is installed in the housing 1. One end of the rotating shaft 3 extends out of the housing 1 and is provided with a driving end 301. The driving end 301 is a rod body, and one end of it is fixedly connected to the outer end of the rotating shaft 3 extending out of the housing. A magnet fixing part 305 is provided radially on the rotating shaft 3 inside the housing 1, and a magnet 306 is fixed. A Hall element 8 is provided on the PCB board 2 on one side of the magnet 306. During assembly and use, referring to Figure 3 , Figure 4 , the optical button module further includes a button keycap 6. The bottom of the button keycap 6 abuts against the upper end of the driving end 301 ( Figure 3 ), or a hinged end 601 ( Figure 4 ) is provided at the bottom of one side of the button keycap 6, and is hinged to the upper end of the driving end 301, and the other side is rotatably connected to the device housing.

[0041] During operation, when the button keycap 6 is pressed down, the driving end 301 is pressed down to rotate the rotating shaft 3, thereby changing the distance between the magnet 306 and the Hall element 8, causing the magnetic field strength sensed by the Hall element 8 to change, and converting the magnetic field strength signal received by the Hall element 8 into a corresponding digital quantity (resistance value). This digital quantity (resistance value) signal is transmitted to the single-chip microcomputer on the PCB board 2, and the single-chip microcomputer gives corresponding execution instructions after analysis.

[0042] The foregoing Embodiments 1-4 are embodiments for trigger keys where the pressing direction is parallel to the PCB main control board in the device host (game controller).

[0043] Embodiment 5: When the non-contact button potential module of the present invention is applied to a normal button where the pressing direction is perpendicular to the PCB main control board in an electronic device host (such as a game controller), on the basis of any one of Embodiments 1-4, the rod driving end of the rotating shaft can be replaced with a gear 10, as Figure 15 shown, to form a gear driving end. The gear 10 is fixedly connected to the outer end of the rotating shaft 3 extending out of the housing. During assembly and use, the optical button module further includes a button keycap 6. A rack 602 is connected to the bottom of the button keycap 6, and the rack 602 meshes with the gear 10.

[0044] In the foregoing four embodiments, when the rotating shaft 3 is not provided with a reset device, its reset can rely on the reset mechanism of the button keycap 6 itself (such as a keycap reset spring) to drive the rotating shaft to reset. When the button keycap 6 is not provided with a reset mechanism, a reset device can be provided on the rotating shaft. The reset device includes but is not limited to a torsion spring 9. In the present invention, the reset device is a torsion spring 9 (such asFigure 2 , Figure 8 , Figure 10 , Figure 12 , Figure 14 As shown in Figure 9, the torsion spring 9 is sleeved on the rotating shaft 3, and one end of the torsion spring 9 is fixed on the rotating shaft 3, and the other end is fixed on the housing 1. Through the torsion force of the torsion spring 9, the reset of the rotating shaft is realized.

[0045] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A non-contact key potential module, comprising a housing, and a PCB board is provided inside the housing. Characterized in that: A rotating shaft is installed in the housing, one end of the rotating shaft extends out of the housing, and a driving end is provided; a light-transmitting hole is provided on the rotating shaft inside the housing, and a light-emitting element and a photosensitive element are respectively provided on the PCB board on both sides of the light-transmitting hole.

2. A non-contact key potential module, comprising a housing, and a PCB board is provided inside the housing. Characterized in that: A rotating shaft is installed in the housing, one end of the rotating shaft extends out of the housing, and a driving end is provided. A light-shielding portion is provided on the rotating shaft inside the housing, and a light-emitting element and a photosensitive element are respectively provided on the PCB board on both sides of the light-shielding portion.

3. A non-contact key potential module, comprising a housing, and a PCB board is provided inside the housing. Characterized in that: A rotating shaft is installed in the housing, one end of the rotating shaft extends out of the housing, and a driving end is provided. A reflecting surface is provided on the rotating shaft inside the housing, and a light-emitting element and a photosensitive element or an infrared transmitting and receiving integrated tube are provided on the PCB board on one side of the reflecting surface.

4. A non-contact key potential module, comprising a housing, and a PCB board is provided inside the housing. Characterized in that: A rotating shaft is installed in the housing, one end of the rotating shaft extends out of the housing, and a driving end is provided. A magnet is provided radially on the rotating shaft inside the housing, and a Hall element is provided on the PCB board on one side of the magnet.

5. A non-contact key potential module according to any one of claims 1-4, Characterized in that: The driving end is a rod body, and one end thereof is fixedly connected to the outer end of the rotating shaft extending out of the housing.

6. A non-contact key potential module according to any one of claims 1-4, Characterized in that: The driving end is a gear, and the gear is fixedly connected to the outer end of the rotating shaft extending out of the housing.

7. A non-contact key potential module according to any one of claims 1-4, Characterized in that: The optical key module includes a key cap, the bottom of the key cap abuts against the upper end of the driving end, or a hinged end provided at the bottom of the key cap is hinged to the upper end of the driving end.

8. A non-contact key potential module according to any one of claims 1-4, Characterized in that: A reset device is provided on the rotating shaft.

9. A non-contact key potential module according to claim 8, Characterized in that: The reset device is a torsion spring, the torsion spring is sleeved on the rotating shaft, and one end of the torsion spring is fixed on the rotating shaft and the other end is fixed on the housing.

10. A non-contact key potential module according to claim 8, Characterized in that: The reset device includes a pair of attracting magnets, one of the magnets is fixed to the bottom end of the light-shielding portion of the rotating shaft at the initial position, and the other magnet is fixed directly below the light-shielding portion at the initial position.

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