Keyboard key, keyboard and electronic equipment

Abstract

The invention relates to a keyboard key, a keyboard and electronic equipment. The keyboard key comprises a shell, a key body, a light-emitting module, a reflector and a light receiving unit, a mounting cavity is formed in the shell; the light-emitting module and the light receiving unit are arranged at the bottom of the mounting cavity, and the reflecting mirror is connected with the key body; the reflecting mirror is configured to reflect light emitted by the light emitting module to positions outside the light receiving unit when the reflecting mirror is located at the position with the largest distance from the bottom of the mounting cavity, and the reflecting mirror moves towards the direction close to the bottom of the mounting cavity along with the key body to reflect the light emitted by the light emitting module to the light receiving unit. The structure of reflecting light through the reflecting mirror is simpler, the size is smaller, the keyboard is lightened, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of keyboards, and in particular to a keyboard key, a keyboard and an electronic device. Background Art

[0002] The keyboard is a commonly used computer peripheral. According to the way the signal is triggered, the keyboard can be divided into mechanical keyboard, membrane keyboard and capacitive keyboard. The above keyboards generally have a problem. After long-term use, the mechanical wear of the keyboard keys will cause poor contact and affect the triggering of the signal. Therefore, infrared keyboards were created. Infrared keyboards use the conduction of infrared light or visible light, and use a light receiving unit to receive infrared light or visible light to generate a trigger signal.

[0003] However, the keys of this infrared keyboard have a complex structure and a large size, which is not conducive to lightweighting the keyboard and reducing costs. Summary of the invention

[0004] Based on this, it is necessary to provide a keyboard key, a keyboard and an electronic device.

[0005] A keyboard key, comprising: a shell, a key body, a light-emitting module, a reflector and a light-receiving unit;

[0006] A mounting cavity is arranged in the housing, and the mounting cavity has a bottom;

[0007] The key body, the light emitting module and the light receiving unit are arranged in the installation cavity, the light emitting module and the light receiving unit are arranged at the bottom of the installation cavity, the reflector is connected to the key body, the reflector faces the light emitting module and the light receiving unit, and the light emitting direction of the light emitting module faces the reflector;

[0008] The button body moves in a direction close to the bottom of the mounting cavity or away from the bottom of the mounting cavity, and the reflector is configured to reflect the light emitted by the light-emitting module to a position outside the light-receiving unit when the reflector is located at a position with a maximum distance from the bottom of the mounting cavity, and the reflector reflects the light emitted by the light-emitting module to the light-receiving unit as the button body moves toward the direction close to the bottom of the mounting cavity.

[0009] In one of the embodiments, the light emitting module includes a laser module, and the laser module is used to emit laser.

[0010] In one embodiment, the light emitting module includes a laser chip and a lens. The laser chip is disposed at the bottom of the mounting cavity, and the lens is disposed on the outside of the laser chip. The light emitted by the laser chip is refracted by the lens toward the reflector.

[0011] In one of the embodiments, a base plate is further included, and the base plate is arranged at the bottom of the installation cavity. The laser chip and the light receiving unit are respectively arranged on the base plate and are respectively connected to the pads on the base plate.

[0012] In one of the embodiments, the laser chip and the light receiving unit are arranged adjacent to each other, and the lens has a refractive surface, which gradually tilts toward the bottom of the mounting cavity from an end close to the light receiving unit to an end far away from the light receiving unit, and the light emitted by the laser chip is refracted by the refractive surface to the reflector.

[0013] In one of the embodiments, a mounting seat is further included, wherein a accommodating cavity is disposed in the mounting seat, wherein the mounting seat is provided with a first light-transmitting port and a second light-transmitting port communicated with the accommodating cavity, wherein the laser chip and the light receiving unit are both disposed in the accommodating cavity, and the light emitting direction of the laser chip is toward the first light-transmitting port, wherein the light receiving unit receives light from the reflector through the second light-transmitting port, and the lens closes the first light-transmitting port.

[0014] In one of the embodiments, an elastic member is further included, one end of the elastic member is connected to the button body, and the other end of the elastic member is connected to the shell.

[0015] In one embodiment, a guide column is provided on the bottom protrusion of the installation cavity, and a guide hole is opened on the guide column. The button body has a sliding column, and the sliding column is movably inserted in the guide hole. The sliding column moves along the guide hole in a direction close to the bottom of the installation cavity or away from the bottom of the installation cavity.

[0016] A keyboard comprises the keyboard keys described in any one of the above embodiments.

[0017] An electronic device comprises the keyboard described in any one of the above embodiments.

[0018] In the above-mentioned keyboard keys, keyboards and electronic devices, the light emitted by the light-emitting module is received by the light-receiving unit after being reflected by the reflector, and the light-receiving unit converts the light signal into an electrical signal. When the key body is located at the position farthest from the bottom of the mounting cavity, the reflector is located at the position farthest from the bottom of the mounting cavity. At this time, the reflector will not reflect the light of the light-emitting module to the light-receiving unit. When the key body is pressed and gradually approaches the bottom of the mounting cavity, the distance between the reflector and the light-emitting module gradually decreases, so that the light reflected by the reflector can be directed toward the light-receiving unit and received by the light-receiving unit, thereby enabling the keyboard key to generate a signal when it is pressed. The above-mentioned structure for reflecting light by the reflector is simpler and smaller in size, which is conducive to lightweighting the keyboard and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a keyboard key in one direction according to an embodiment;

[0021] Figure 2A A schematic diagram of a three-dimensional exploded structure of a keyboard key in one direction according to an embodiment;

[0022] Figure 2B A schematic diagram of a three-dimensional exploded and perspective structure of a keyboard key in one direction according to an embodiment;

[0023] Figure 3 A schematic diagram of a three-dimensional exploded structure of a keyboard key in another direction according to an embodiment;

[0024] Figure 4 A schematic diagram of a three-dimensional exploded structure of a portion of a keyboard key structure according to an embodiment;

[0025] Figure 5 The figure is a schematic diagram of the reflection position of the laser emitted by the laser module when the reflector moves to different positions according to an embodiment.

[0026] Reference numerals:

[0027] 10. Keyboard keys; 100. Shell; 200. Key body; 300. Light-emitting module; 400. Reflector; 500. Light receiving unit; 101. Mounting cavity; 210. Connecting part; 310. Laser chip; 320. Lens; 600. Bottom plate; 321. Refractive surface; 322. Vertical surface; 150. Mounting seat; 610. Elastic member; 620. Guide column; 621. Guide hole; 630. Sliding column; 102. Circuit opening; 110. Upper shell; 120. Lower shell; 220. Supporting part; 103. Connecting hole; 650. Pad; DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figures 1 to 3 As shown, it is a keyboard key 10 according to an embodiment of the present invention, and the keyboard key 10 includes a housing 100, a key body 200, a light emitting module 300, a reflector 400 and a light receiving unit 500;

[0030] The housing 100 is provided with a mounting cavity 101, and the mounting cavity 101 has a bottom;

[0031] The key body 200, the light emitting module 300 and the light receiving unit 500 are arranged in the installation cavity 101, the light emitting module 300 and the light receiving unit 500 are arranged at the bottom of the installation cavity 101, the reflector 400 is connected to the key body 200, the reflector 400 faces the light emitting module 300 and the light receiving unit 500, and the light emitting direction of the light emitting module 300 faces the reflector 400;

[0032] The button body 200 moves in a direction close to the bottom of the mounting cavity 101 or away from the bottom of the mounting cavity 101, and the reflector 400 is configured to reflect the light emitted by the light-emitting module 300 to a position outside the light receiving unit 500 when the reflector 400 is located at the position with the maximum distance from the bottom of the mounting cavity 101, and the reflector 400 reflects the light emitted by the light-emitting module 300 to the light receiving unit 500 as the button body 200 moves toward the direction close to the bottom of the mounting cavity 101.

[0033] In this embodiment, the housing 100 is the inner housing of the keyboard key 10. Figure 1 The outer shell (key cap) of the keyboard key 10 is omitted, and the top of the key body 200 has a connecting portion 210, which is a cross-shaped structure. The connecting portion 210 is used to connect with the key cap. When the user presses the key cap, the key cap moves to the bottom of the keyboard, driving the key body 200 to move toward the bottom of the keyboard.

[0034] In this embodiment, a connection hole 103 communicating with the installation cavity 101 is provided at the top of the housing 100, and the connection portion 210 of the key body 200 is arranged in the connection hole 103, so that the key cap can be connected to the connection portion 210 and covered on the outside of the bottom of the housing 100, thereby sealing the housing 100. In this embodiment, the key body 200, the reflector 400, the light emitting module 300 and the light receiving unit 500 are arranged in the installation cavity 101, which can achieve the key body 200, the reflector 400, the light emitting module 300 and the light receiving unit 500 are sealed in the housing 100, and have a good dustproof and waterproof effect. In addition, since the interior of the housing 100 is kept sealed, it can effectively prevent external light from entering the housing 100, and effectively prevent the light receiving unit 500 from receiving external light and affecting the accuracy.

[0035] In this embodiment, the light emitting module 300 is used to emit a beam of light, or to emit light in a concentrated direction. It should be understood that since the light emitting module 300 and the light receiving unit 500 are both located at the bottom of the mounting cavity 101, if the light emitting module 300 emits divergent light, then even without being reflected by the reflector 400, the light of the light emitting module 300 can be received by the light receiving unit 500, which will reduce the accuracy of the keyboard keys 10. Therefore, in this embodiment, the light emitted by the light emitting module 300 should be avoided from diffusing as much as possible, so that the light of the light emitting module 300 can only be directed to the light receiving unit 500 after being reflected by the reflector 400.

[0036] The light receiving unit 500 is a light sensing unit. For example, the light sensing unit includes an optical coupler. For example, the light sensing unit includes a photoresistor. For example, the light receiving unit 500 includes a photosensor. The light receiving unit 500 is used to receive a light signal and convert the light signal into an electrical signal.

[0037] In this embodiment, please combine Figure 1 , Figure 2A and Figure 5As shown, when the keyboard key 10 is not pressed, the key body 200 is located at the highest point, that is, at the position with the largest distance from the bottom of the mounting cavity 101. At this time, the reflector 400 is also located at the position with the largest distance from the bottom of the mounting cavity 101. At this time, the distance of the light emitted by the light-emitting module 300 reflected by the reflector 400 to the bottom of the mounting cavity 101 is the largest, and the light reflected by the reflector 400 does not pass through the light receiving unit 500, and the light receiving unit 500 cannot receive the light of the light-emitting module 300. At this time, the keyboard key 10 does not generate a signal; then, when the keyboard key 10 is pressed, the key body 200 moves toward the bottom of the mounting cavity 101, driving the reflector 400 to gradually approach the bottom of the mounting cavity 101. At this time, the distance of the light emitted by the light-emitting module 300 reflected by the reflector 400 to the bottom of the mounting cavity 101 gradually decreases, and gradually approaches the light receiving unit 500, and is received by the light receiving unit 500, and the light receiving unit generates an electrical signal.

[0038] It should be understood that in a conventional infrared keyboard key, an LED lamp bead light source is arranged at the bottom of the keyboard key, and two unconnected fixed light guide blocks are arranged at the top of the LED lamp bead and the top of the light receiving unit in the key, respectively. The movable light guide plate (light guide block) is driven to move by pressing the key, so that the movable light guide plate is aligned with the two fixed light guide blocks and connected with the two fixed light guide blocks, and a light path between the LED lamp bead and the light receiving unit is established. In this way, the light guide plate can guide the light of the LED lamp bead to the light receiving unit also located at the bottom of the keyboard key. Compared with the present embodiment, this structure requires three light guide components: two fixed light guide blocks and one movable conduit plate, and a plurality of reflective surfaces for reflection need to be arranged in the light guide plate, so that the light reaches the light receiving unit through refraction and reflection inside the light guide plate. This structure not only requires the addition of a light guide plate with a complex structure, but also requires the arrangement of a structure for installing the fixed light guide block and the movable light guide plate and a structure for guiding the movement of the movable light guide plate on the key, resulting in a relatively complex overall structure of the key and a large volume.

[0039] In this embodiment, there is no need to set a fixed light guide block, nor is there a need to use a movable light guide plate and a fixed light guide block to establish a light path. Instead, the movement of the reflector 400 is driven by the key body 200 when it is pressed to adjust the reflection distance of the light so that the light can be terminated by the light receiving unit 500. The structure is simpler and the volume is smaller, which is conducive to lightweight keyboards and reduces costs. In addition, the structure of the contact trigger signal of the traditional keyboard key 10 is cancelled, which effectively reduces mechanical wear, and the signal is triggered by changing the reflection distance of the light, which effectively improves the response speed and sensitivity.

[0040] In order to improve the accuracy of the keyboard keys 10, in one embodiment, the reflector 400 is configured to reflect the light emitted by the light-emitting module 300 to a position outside the light receiving unit 500 when the reflector 400 is located at a position with a maximum distance from the bottom of the mounting cavity 101; and when the reflector 400 moves along with the key body 200 toward the bottom of the mounting cavity 101 until the distance from the bottom of the mounting cavity 101 is less than or equal to a preset distance, the reflector 400 reflects the light emitted by the light-emitting module 300 to the light receiving unit 500.

[0041] In this embodiment, the preset distance is less than the maximum distance between the reflector 400 and the bottom of the mounting cavity 101 when the keyboard key 10 is not pressed. In this way, when the keyboard key 10 is pressed, when the distance between the reflector 400 and the bottom of the mounting cavity 101 is less than or equal to the preset distance, the reflector 400 can reflect the light emitted by the light emitting module 300 to the light receiving unit 500. It is worth mentioning that the preset distance is related to the volume of the keyboard key 10, the pressing stroke, the distance between the light emitting module 300 and the light receiving unit 500, and the photosensitive area of ​​the light receiving unit 500. The preset distance can be designed according to the volume of the keyboard key 10, the pressing stroke, the distance between the light emitting module 300 and the light receiving unit 500, and the photosensitive area of ​​the light receiving unit 500. It is worth mentioning that in the present application, the reflection of the reflector 400 is utilized so that the light is absorbed by the light receiving unit 500. In this structure, as the reflector 400 is pressed down, the distance from the reflected light to the bottom of the mounting cavity 101 of the light-emitting module 300 decreases accordingly. Therefore, for smaller keyboard keys, the distance between the light-emitting module 300 and the light receiving unit will decrease as the downward stroke of the reflector 400 decreases. In this way, the distance between the light-emitting module 300 and the light receiving unit is reduced, which can help to further reduce the volume of the keyboard keys.

[0042] In order to further improve the accuracy of the keyboard key 10 and avoid the light receiving unit 500 still being able to receive light and generate an electrical signal when the distance between the reflector 400 and the bottom of the installation cavity 101 is the largest when the keyboard key 10 is not pressed, in one embodiment, the side wall of the installation cavity 101 is set as a light absorbing layer, and the reflector 400 is configured to reflect the light emitted by the light emitting module 300 to the light absorbing layer when the reflector 400 is located at the position with the largest distance from the bottom of the installation cavity 101. For example, the light absorbing layer is a fluff layer, for example, the light absorbing layer is a black rough structure layer. It should be understood that, although when the reflector 400 is located at the position with the maximum distance from the bottom of the mounting cavity 101, the reflector 400 reflects the light emitted by the light-emitting module 300 to a position outside the light receiving unit 500, if the side wall of the mounting cavity 101 is a smooth surface and easy to reflect light, it is still possible to reflect and diffusely reflect the light to the light receiving unit 500. Therefore, in this embodiment, a light-absorbing layer is provided on the side wall of the mounting cavity 101 located around the light receiving unit 500, which is used to absorb the light emitted by the light-emitting module 300 and avoid reflection to the light receiving unit 500, which can effectively prevent the light receiving unit 500 from erroneously triggering the electrical signal, thereby further improving the accuracy of the keyboard key 10.

[0043] In order to further improve the accuracy of the keyboard keys 10, in one embodiment, the light receiving unit 500 is used to receive a light signal, and when the intensity of the received light signal is greater than a preset intensity, an electrical signal is generated according to the light signal. In this embodiment, considering the reflection and diffuse reflection of the side wall of the mounting cavity 101, although this part of the light is relatively weak, if the sensitivity of the light receiving unit 500 is high, this part of the weak reflected light may also affect the light receiving unit 500. Therefore, in this embodiment, the light receiving unit 500 is configured to generate an electrical signal according to the light signal only when the intensity of the received light signal is greater than a preset intensity. In this way, false triggering of the electrical signal can be avoided, thereby further improving the accuracy of the keyboard keys 10.

[0044] In one embodiment, the light receiving unit 500 includes a light sensor arranged in an array, so that the light sensor in the array has a large receiving area, high sensitivity and fast response characteristics, and can accurately capture the change of the light signal. When receiving the light signal, it can quickly convert the light signal into an electrical signal.

[0045] In order to improve the accuracy of the light emitting direction and thus improve the accuracy of the keyboard keys 10, in one embodiment, the light emitting module 300 includes a laser module, and the laser module is used to emit laser.

[0046] In this embodiment, the laser emitted by the laser module has the characteristics of strong guidance, small divergence angle and high precision. The laser module emits the laser to the reflector 400, which can effectively avoid the diffusion of the emitted light, so that the laser can accurately point to the reflector 400 and be accurately reflected by the reflector 400. When the keyboard key 10 is not pressed, when the distance between the reflector 400 and the bottom of the installation cavity 101 is the largest, the laser is reflected to a position outside the light receiving unit 500. Due to the good directionality, high straightness and small diffusion angle of the laser, the light can be effectively prevented from being received by the light receiving unit 500. As the key body 200 moves downward, the laser can be accurately reflected to the light receiving unit 500 to trigger an electrical signal.

[0047] It is worth mentioning that in traditional infrared keyboard keys, due to the divergent light emission adopted by light sources such as LED lamp beads, in order to prevent light from diffusing to the light receiving unit when the key is not pressed, a retaining wall needs to be set between the light source and the light receiving unit. The retaining wall is used to prevent the light from the light source from directly diffusing to the light receiving unit, or the light receiving unit is closed by the retaining wall, which makes the structure of the keyboard complicated. In this embodiment, a laser module is used as a light source, and the laser has the characteristics of good directivity, high straightness, and small diffusion angle, which can effectively prevent light from diffusing to the light receiving unit 500 when the key is not pressed. In this way, there is no need to set a retaining wall structure, nor is there a light absorbing layer on the side wall of the installation cavity 101, and there is no need to worry about diffuse reflection, thereby effectively simplifying the internal structure of the keyboard key 10 and effectively improving the accuracy of the keyboard key 10.

[0048] In order to enable the laser to be accurately emitted to the reflector 400, in one embodiment, as Figure 2B and Figure 5 As shown, the light-emitting module 300 includes a laser chip 310 and a lens 320 . The laser chip 310 is disposed at the bottom of the mounting cavity 101 , and the lens 320 is disposed on the outside of the laser chip 310 . The light emitted by the laser chip 310 is refracted by the lens 320 toward the reflector 400 .

[0049] In this embodiment, the laser chip 310 is used to emit laser light, and the lens 320 is an optical lens 320, which is used to refract the light emitted by the laser chip 310 to the reflector 400. The angle of the refracted light of the lens 320 can be set according to the volume of the keyboard key 10, the stroke of pressing, the distance between the light emitting module 300 and the light receiving unit 500, and the photosensitive area of ​​the light receiving unit 500. In this embodiment, the lens 320 can be used to change the angle of the laser of the laser chip 310, so that the laser can meet the requirements of being received by the light receiving unit 500 when pressing and not being received by the light receiving unit 500 when not pressing. In this way, the laser chip 310 can be attached to the bottom of the installation cavity 101 parallel to the bottom of the installation cavity 101 according to the needs of installation, so that the laser chip 310 does not need to be installed tilted, thereby improving the stability of the laser chip 310.

[0050] In one embodiment, Figure 2A , Figure 2B and Figure 3 As shown, the keyboard key 10 also includes a base plate 600, which is arranged at the bottom of the mounting cavity 101, and the laser chip 310 and the light receiving unit 500 are respectively arranged on the base plate 600 and respectively connected to the solder pads 650 on the base plate 600.

[0051] In this embodiment, the base plate 600 is used to support the laser chip 310 and the light receiving unit 500, and the pads 650 are connected to the pins of the laser chip 310 and the pins of the light receiving unit 500, so as to fix the laser chip 310 and the light receiving unit 500, and also realize the electrical connection with the laser chip 310 and the light receiving unit 500. The base plate 600 can be a circuit board, for example, a circuit is arranged on the circuit board, and the circuit includes a power supply circuit and a processing circuit. The pads 650 include a first pad and a second pad, and the power supply circuit is connected to the first pad, and the first pad is connected to the laser chip 310, and the power supply circuit and the processing circuit are connected to the second pad, and the second pad is connected to the light receiving unit 500. The power supply circuit is used to supply power to the laser chip 310 and the light receiving unit 500, and the processing circuit is used to process and forward the electrical signal of the light receiving unit 500, for example, forwarding it to the main board on the keyboard.

[0052] It is worth mentioning that the laser chip 310 and the light receiving unit 500 can be at the same height or at different heights.

[0053] In order to realize the installation of the laser chip 310 and the light receiving unit 500 and maintain the sealing in the installation cavity 101, in one embodiment, Figure 3As shown, a circuit opening 102 connected to the mounting cavity 101 is provided at the bottom of the shell 100, and a base plate 600 is arranged at the bottom of the shell 100 and is located outside the mounting cavity 101. The base plate 600 is connected to the bottom of the shell 100 to close the circuit opening 102. The laser chip 310 and the light receiving unit 500 are arranged in the circuit opening 102, and are connected to a solder pad 650 on the base plate 600 located in the circuit opening 102.

[0054] In this embodiment, the base plate 600 is located outside the installation cavity 101, which is conducive to the electrical connection with the control circuit on the keyboard, and the circuit opening 102 is opened at the bottom of the shell 100, so that the laser chip 310 and the light receiving unit 500 located in the installation cavity 101 can be welded to the base plate 600 to achieve electrical connection, and the connection between the base plate 600 and the bottom of the shell 100 can close the circuit opening 102, so that the installation cavity 101 is closed as a whole, which is effectively waterproof and dustproof.

[0055] In one embodiment, Figure 2B and Figure 5 As shown, the laser chip 310 and the light receiving unit 500 are arranged adjacent to each other, and the lens 320 has a refractive surface 321, and the refractive surface 321 gradually tilts toward the bottom of the mounting cavity 101 from an end close to the light receiving unit 500 to an end away from the light receiving unit 500, and the light emitted by the laser chip 310 is refracted by the refractive surface 321 to the reflector 400.

[0056] In this embodiment, the refractive surface 321 is inclined to the direction of the laser of the laser chip 310, so that after refraction by the refractive surface 321, the laser chip 310 emits the laser upward in a direction perpendicular to the bottom of the mounting cavity 101. Since the refractive index of air is less than the refractive index of the lens 320, the refraction angle is greater than the incident angle, and the laser is refracted by the refractive surface 321 and propagates toward the reflector 400. Therefore, through the refraction of the refractive surface 321, the laser of the laser chip 310 can be effectively refracted to the reflector 400. It is worth mentioning that the inclination angle of the refractive surface 321 can be set according to the volume of the keyboard key 10, the stroke of the keystroke, the distance between the light-emitting module 300 and the light-receiving unit 500, and the photosensitive area of ​​the light-receiving unit 500.

[0057] In one embodiment, Figure 5 As shown, the lens 320 has a vertical surface 322 , the vertical surface 322 is connected to one end of the refractive surface 321 close to the light receiving unit 500 , and the vertical surface 322 is perpendicular to the bottom of the installation cavity 101 .

[0058] In this embodiment, since the refractive index of air is less than that of the lens 320, the refraction angle is greater than the incident angle. Laser has extremely high directivity and a very small diffusion angle, which can prevent light from diffusing to the light receiving unit 500, and the vertical surface 322 can further prevent light from being refracted to the light receiving unit 500.

[0059] In order to make the light emitting module 300 and the light receiving unit 500 more firmly installed and make the keyboard key 10 more structurally integrated, in one embodiment, Figure 2B and Figure 4 As shown, the keyboard key 10 also includes a mounting seat 150, a receiving cavity is arranged in the mounting seat 150, and the mounting seat 150 is provided with a first light-transmitting port and a second light-transmitting port connected to the receiving cavity, the laser chip 310 and the light receiving unit 500 are both arranged in the receiving cavity, and the light emitting direction of the laser chip 310 is toward the first light-transmitting port, the light receiving unit 500 receives the light from the reflector 400 through the second light-transmitting port, and the lens 320 closes the first light-transmitting port.

[0060] In this embodiment, the mounting seat 150 can better fix the laser chip 310 and the lens 320, and can also provide an accommodation space for the light receiving unit 500 to fix the light receiving unit 500, thereby making the installation of the laser module and the light receiving unit 500 more stable, and integrating the laser module and the light receiving unit 500 together, effectively improving the structural integration of the keyboard key 10, and enabling the laser module and the light receiving unit 500 to be installed as a whole, thereby improving assembly efficiency.

[0061] In one embodiment, please combine Figure 2A and Figure 3 The bottom protrusion of the installation cavity 101 is provided with a guide column 620, and the guide column 620 is provided with a guide hole 621. The button body 200 has a sliding column 630, and the sliding column 630 is movably inserted in the guide hole 621, and the sliding column 630 moves along the guide hole 621 in a direction close to the bottom of the installation cavity 101 or away from the bottom of the installation cavity 101.

[0062] In this embodiment, the central axis of the guide column 620 coincides with the central axis of the sliding shaft, and the guide hole 621 is used to guide the sliding of the sliding column 630, so that the key body 200 moves more smoothly when being pressed.

[0063] In one embodiment, Figure 2A and Figure 3 As shown, the keyboard key 10 further includes an elastic member 610 , one end of the elastic member 610 is connected to the key body 200 , and the other end of the elastic member 610 is connected to the housing 100 .

[0064] In this embodiment, the elastic member 610 is disposed in the mounting cavity 101. By disposing the elastic member 610, elastic force is provided for the key body 200, so that the key body 200 can automatically bounce up when it is not pressed. In one embodiment, the elastic member 610 is a spring, which is sleeved on the sliding column 630 and located in the guide hole 621. One end of the spring is connected to the key body 200, and the other end of the spring is connected to the housing 100. In this embodiment, the spring provides elastic force for the key body 200, so that the keyboard key 10 can automatically bounce up when it is not subjected to pressing force. In addition, the elastic force buffer provided by the spring for the key body 200 can produce a damping feeling when the keyboard key 10 is pressed, so that the keyboard key 10 has a better pressing touch.

[0065] It is worth mentioning that when the keyboard key 10 is not subjected to pressing force, under the elastic force of the elastic member 610 , the key body 200 rebounds to the highest point, that is, the position at the greatest distance from the bottom of the installation cavity 101 .

[0066] In one embodiment, Figures 1 to 3 As shown, the shell 100 includes an upper shell 110 and a lower shell 120, and the upper shell 110 and the lower shell 120 are snap-fitted together to form an installation cavity 101 on the inner side, wherein the end of the upper shell 110 away from the lower shell 120 is the top of the shell 100, and the top of the upper shell 110 is used as the top of the shell 100 to open a connecting hole 103, and the end of the lower shell 120 away from the upper shell 110 is the bottom of the shell 100, and the bottom of the lower shell 120 is used as the bottom of the shell 100 to open a circuit opening 102.

[0067] In one embodiment, a keyboard is provided, comprising the keyboard keys described in any one of the above embodiments.

[0068] In this embodiment, the keyboard also includes a control circuit, which is connected to the light receiving unit of each keyboard key, and is responsible for receiving and processing the electrical signal transmitted by the light receiving source. The control circuit integrates a high-performance microprocessor, uses advanced algorithms to analyze the electrical signal, filter interference signals, and accurately determine the instruction code corresponding to the key action.

[0069] In one embodiment, an electronic device is provided, comprising the keyboard described in any one of the above embodiments.

[0070] The electronic device may be a personal computer or various computers with a keyboard.

[0071] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A keyboard key, characterized in that: include: Shell, key body, light-emitting module, reflector and light receiving unit; A mounting cavity is arranged in the housing, and the mounting cavity has a bottom; The key body, the light emitting module and the light receiving unit are arranged in the installation cavity, the light emitting module and the light receiving unit are arranged at the bottom of the installation cavity, the reflector is connected to the key body, the reflector faces the light emitting module and the light receiving unit, and the light emitting direction of the light emitting module faces the reflector; The button body moves in a direction close to the bottom of the mounting cavity or away from the bottom of the mounting cavity, and the reflector is configured to reflect the light emitted by the light-emitting module to a position outside the light-receiving unit when the reflector is located at a position with a maximum distance from the bottom of the mounting cavity, and the reflector reflects the light emitted by the light-emitting module to the light-receiving unit as the button body moves toward the direction close to the bottom of the mounting cavity.

2. The keyboard key according to claim 1, characterized in that: The light emitting module comprises a laser module, and the laser module is used for emitting laser.

3. The keyboard key according to claim 1, characterized in that: The light emitting module comprises a laser chip and a lens. The laser chip is arranged at the bottom of the mounting cavity, and the lens is arranged at the outside of the laser chip. The light emitted by the laser chip is refracted by the lens toward the reflector.

4. The keyboard key according to claim 3, characterized in that: It also includes a base plate, which is arranged at the bottom of the installation cavity. The laser chip and the light receiving unit are respectively arranged on the base plate and are respectively connected to the pads on the base plate.

5. The keyboard key according to claim 3, characterized in that: The laser chip and the light receiving unit are arranged adjacent to each other, and the lens has a refractive surface, which gradually inclines toward the bottom of the mounting cavity from an end close to the light receiving unit to an end far away from the light receiving unit, and the light emitted by the laser chip is refracted by the refractive surface to the reflector.

6. The keyboard key according to claim 3, characterized in that: It also includes a mounting seat, in which a accommodating cavity is arranged, and the mounting seat is provided with a first light-transmitting port and a second light-transmitting port communicated with the accommodating cavity, the laser chip and the light receiving unit are both arranged in the accommodating cavity, and the light emission direction of the laser chip is toward the first light-transmitting port, the light receiving unit receives light from the reflector through the second light-transmitting port, and the lens closes the first light-transmitting port.

7. The keyboard key according to any one of claims 1 to 6, characterized in that: It also includes an elastic member, one end of which is connected to the button body, and the other end of which is connected to the shell.

8. The keyboard key according to any one of claims 1 to 6, characterized in that: The bottom protrusion of the installation cavity is provided with a guide column, and the guide column is provided with a guide hole. The button body has a sliding column, and the sliding column is movably inserted in the guide hole. The sliding column moves along the guide hole in a direction close to the bottom of the installation cavity or away from the bottom of the installation cavity.

9. A keyboard, characterized in that: The invention comprises the keyboard keys as described in any one of claims 1 to 8.

10. An electronic device, characterized in that: Including the keyboard described in claim 9.

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