CN111696812A - Photoelectric induction type key switch and keyboard - Google Patents
Photoelectric induction type key switch and keyboard Download PDFInfo
- Publication number
- CN111696812A CN111696812A CN202010557349.0A CN202010557349A CN111696812A CN 111696812 A CN111696812 A CN 111696812A CN 202010557349 A CN202010557349 A CN 202010557349A CN 111696812 A CN111696812 A CN 111696812A
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- light
- key switch
- photosensitive
- component
- shell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
- H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
- H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
- H01H13/7065—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys characterised by the mechanism between keys and layered keyboards
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/965—Switches controlled by moving an element forming part of the switch
- H03K17/968—Switches controlled by moving an element forming part of the switch using opto-electronic devices
- H03K17/969—Switches controlled by moving an element forming part of the switch using opto-electronic devices having a plurality of control members, e.g. keyboard
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- Push-Button Switches (AREA)
Abstract
The invention belongs to the technical field of keyboards, and particularly relates to a photoelectric induction type key switch and a keyboard, wherein the photoelectric induction type key switch comprises a circuit board, a photosensitive component and a pressing component, the pressing component is provided with a shading piece, and the shading piece and a light receiving surface of the photosensitive component are arranged at intervals; when the pressing component is pressed, the shading component can move relative to the light receiving surface of the photosensitive component to change the light receiving amount of the photosensitive component, so that the photocurrent signal of the photosensitive component is changed; the circuit board has the controller, controller and photosensitive element electric connection, the controller is used for receiving the photocurrent signal and output the executive signal who corresponds with the numerical value of photocurrent signal for the user can set up the trigger point of button wantonly between photosensitive element's luminous flux maximum and luminous flux minimum, so that set up wantonly according to user's needs, realize the control function that has specific functional relation of stepless of button, even make the setting of button contact not subject to the restriction, it is extremely convenient to use.
Description
Technical Field
The invention belongs to the technical field of keyboards, and particularly relates to a photoelectric induction type key switch and a keyboard.
Background
The electric competition player generally likes to use a linearly controlled key switch, the linear key switch in the prior art is usually resistance-type, and the principle is that a conductor is arranged in the key switch, and the resistance of the conductor is changed under the pushing action of the external force of the key switch, so that the change of an electric signal loaded on the conductor is realized. According to the resistance type linear switch, the key switch is pushed by external force to deform and shift a conductor in the key switch so as to realize the linear function of the key switch, and therefore the key contact arranged on the key switch is greatly limited. Moreover, with the increase of the number of times of use, the conductors in the key switch are abraded and deformed to be greatly different from the original state, so that the key switch is insensitive to contact or cannot be conducted, and the service life of the key switch is limited.
Disclosure of Invention
The invention aims to provide a photoelectric induction type key switch and a keyboard, and aims to solve the technical problem that key contacts are limited in the using process of a linear key switch in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: a photoelectric induction type key switch comprises a circuit board, a photosensitive assembly and a pressing assembly, wherein the pressing assembly is provided with a light shielding piece, and the light shielding piece and a light receiving surface of the photosensitive assembly are arranged at intervals; when the pressing component is pressed, the light shielding component can move relative to the light receiving surface of the photosensitive component to change the light receiving amount of the photosensitive component, so that the photocurrent signal of the photosensitive component changes; the circuit board is provided with a controller, the controller is electrically connected with the photosensitive assembly, and the controller is used for receiving the photocurrent signal and outputting an execution signal corresponding to the numerical value of the photocurrent signal.
Optionally, one end of the light shielding member facing the photosensitive assembly is provided with a first light shielding cavity communicated with the outside.
Optionally, the photoelectric sensing type key switch further includes a housing, the pressing component is movably mounted on the housing to drive the light shielding component to move relative to the light receiving surface of the photosensitive component, a light transmitting area which emits light towards the photosensitive component is arranged on the housing, a second light shielding cavity is arranged on the housing, a light transmitting opening is arranged at one end of the second light shielding cavity which faces the light transmitting area, the photosensitive component is located in the second light shielding cavity, and the light receiving surface of the photosensitive component faces the light transmitting opening.
Optionally, the pressing assembly includes a pressing member and an elastic member, the casing is provided with a pressing cavity, the pressing member is installed in the pressing cavity, the elastic member abuts against the cavity wall of the pressing cavity and between the pressing member, and the light shielding member is disposed on the pressing member.
Optionally, the housing includes a light shielding shell and a light transmitting shell mounted on the light shielding shell, the second light shielding cavity is disposed on the light shielding shell, and the light transmitting shell is formed in a transparent shape in the light transmitting area.
Optionally, the photoelectric switch button further comprises an LED lamp, the LED lamp is mounted on the circuit board and electrically connected to the circuit board, and the LED lamp emits light towards the light-transmitting shell.
Optionally, a light guide cavity is arranged on the shading shell, a light guide opening is formed in one end, facing the light transmitting shell, of the light guide cavity, and the LED lamp is located in the light guide cavity and faces the light transmitting shell through the light guide opening to emit light.
Optionally, the photosensitive element includes a photosensitive element, the photosensitive element is mounted on the circuit board and electrically connected to the circuit board, and the photosensitive element is located in the second light-shielding cavity.
Optionally, the photosensitive assembly further includes a light guide member disposed on the photosensitive element and used for guiding the light of the light-transmitting opening to enter the photosensitive element.
The photoelectric induction type key switch provided by the embodiment of the invention has the beneficial effects that: when the pressing component is not pressed, the light flux received by the photosensitive component is maximum; after the light shielding member completely shields the light receiving surface of the photosensitive assembly, the luminous flux received by the photosensitive assembly is minimum. When the pressing component is pressed, the shading component moves downwards to enable luminous flux emitted to the photosensitive component to be gradually reduced to the minimum value from the initial maximum value, so that the photocurrent signal on the photosensitive component is also gradually reduced to the minimum value from the maximum value, and therefore in an electric circuit loop formed by electrically connecting the photosensitive component and the controller, the controller can obtain a group of photocurrent signals corresponding to the stroke size when the key switch is pressed. The controller can realize a group of execution signals with corresponding changes by detecting and reading the group of photocurrent signals with specific change characteristics so as to control the function output of the key switch, so that a user can randomly set a trigger point of the key between the maximum light flux value and the minimum light flux value of the photosensitive component, thereby being convenient for randomly setting according to the needs of the user, realizing the stepless control function with specific function relation of the key, namely, not limiting the setting of the key contact and being extremely convenient to use.
The photoelectric induction type key switch is different from a resistance type linear key switch in that a conductor in the key switch is pushed by external force to deform and shift so as to realize the function of the linear key switch, the photoelectric induction type key switch only realizes the function of the linear key switch by controlling the illumination luminous flux of the photosensitive assembly, and the phenomenon that the photosensitive assembly in the key switch is worn, deformed and damaged and fails in the pressing or bouncing process of the key switch does not exist, so that the service life of the key switch is longer.
The embodiment of the invention provides another technical scheme that: a keyboard comprises the photoelectric induction type key switch.
According to the keyboard provided by the embodiment of the invention, due to the adoption of the photoelectric induction type key switch, different key triggering functions can be realized when the photosensitive component receives different luminous fluxes, so that a user can randomly set the triggering point of the key between the maximum luminous flux and the minimum luminous flux of the photosensitive component, and the stepless linear control function of the key is realized. In the electronic competitive game, a game player can set the pressing stroke of the key as the trigger stroke of the switch according to the requirement of the game player, the sensitivity of the key is high, the user experience is good, the structure is simple, and the manufacturing cost is low.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a photoelectric sensing type key switch according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the photoelectric sensing type key switch shown in FIG. 1 in a normal state;
FIG. 3 is a schematic cross-sectional view of the photoconductive key switch of FIG. 1 in a pressed state;
FIG. 4 is a schematic cross-sectional view of the photoconductive key switch of FIG. 1 in a fully pressed state;
FIG. 5 is an exploded view of the photoelectric sensing type key switch of FIG. 1;
FIG. 6 is a schematic structural view of a light shielding shell of the photoelectric sensing type key switch in FIG. 5;
fig. 7 is a schematic structural view of a pressing member of the photoelectric sensing type key switch in fig. 5.
Wherein, in the figures, the respective reference numerals:
10-a housing;
11-a light-shielding shell; 12-a light-transmitting shell; 13-a light-transmitting region; 14-a second shading cavity; 15-light guide cavity; 16-pressing the cavity; 17-a guide; 18-an annular sleeve; 141-light-transmitting openings; 151 — a light guide opening; 171-a guide cavity;
20-a circuit board;
30-a photosensitive component;
31-a photosensitive element; 32-a light guide;
40-a pressing assembly;
41-a light-shielding member; 42-a pressing piece; 43-an elastic member; 411 — first shading cavity;
50-LED lamp.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-7 are exemplary and intended to be used to illustrate the invention, but are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 2, 3 and 4, a description will now be given of a photoelectric sensing type key switch according to an embodiment of the present invention. The photoelectric sensing type key switch comprises a circuit board 20, a photosensitive component 30 and a pressing component 40, wherein the pressing component 40 is provided with a light shielding piece 41, and the light shielding piece 41 and a light receiving surface of the photosensitive component 30 are arranged at intervals; when the pressing member 40 is pressed, the light shielding member 41 can move relative to the light receiving surface of the photosensitive element 30 to change the light receiving amount of the photosensitive element 30 (i.e. the light flux emitted to the photosensitive element 30) so as to change the photocurrent signal of the photosensitive element 30; the circuit board 20 has a controller electrically connected to the photosensitive element 30, and the controller is configured to receive the photocurrent signal and output an execution signal corresponding to a value of the photocurrent signal.
Compared with the prior art, the photoelectric induction type key switch provided by the embodiment of the invention has the advantages that when the pressing component 40 is not pressed, the luminous flux received by the photosensitive component 30 is maximum; after the light shielding member 41 completely shields the light receiving surface of the photosensitive element 30, the light flux received by the photosensitive element 30 is minimized. When the pressing member 40 is pressed, the light shielding member 41 moves downward to gradually reduce the light flux emitted to the photosensitive element 30 from the initial maximum value to the minimum value, so that the photocurrent signal on the photosensitive element 30 is gradually reduced from the maximum value to the minimum value, and thus, in the electrical path loop formed by electrically connecting the photosensitive element 30 and the controller, the controller can obtain a set of photocurrent signals corresponding to the stroke when the key switch is pressed. The controller can realize a set of execution signals with corresponding changes by detecting and reading the set of photocurrent signals with specific change characteristics to control the functional output of the key switch, so that a user can arbitrarily set the trigger point of the key between the maximum light flux value and the minimum light flux value of the photosensitive component 30, and the control function with a specific functional relationship of the key without section can be realized by arbitrarily setting according to the needs of the user, namely, the setting of the key contact is not limited, and the use is extremely convenient.
The light flux change received by the photosensitive component 30 and the light current signal change generated by the photosensitive component 30 form a one-to-one correspondence functional relationship, and further the light current signal generated by the photosensitive component 30 and the execution signal output by the controller form a one-to-one correspondence functional relationship, so as to realize the control function of the key switch. The controller may be an MCU module.
In specific applications, for example, when a user needs to improve the sensitivity of a key, a specific pressing stroke can be set as a key trigger point to realize a key function, and the key does not need to be completely pressed to realize the key function, so that the user can easily and quickly complete the key function, and the key input speed is effectively improved. Or, in the pressing process, a plurality of key trigger points are arranged at any position in the pressing stroke as required, so that the user can press different strokes as required to realize corresponding key functions, and the competition use requirements of electronic competition users can be greatly met.
Different from a resistance type linear key switch which realizes a linear key switch function by pushing a conductor in the key switch to deform and shift through external force, the photoelectric induction type key switch of the embodiment of the invention realizes the key switch function with a specific functional relation only by controlling the illumination luminous flux of the photosensitive component 30, and has no abrasion, deformation, damage and failure caused by the photosensitive component 30 in the key switch in the pressing or bouncing process of the key switch, so that the service life of the key switch is longer.
The photoelectric induction type key switch provided by the embodiment of the invention can directly receive external light, so that an additional light-emitting device such as an LED (light-emitting diode) is not needed to provide a light source, the structure of the key is simpler and more compact, the miniaturization development of the key is facilitated, and the manufacturing cost is lower.
In another embodiment of the present invention, as shown in fig. 2, 4 and 7, the light shielding member 41 is provided with a first light shielding cavity 411 on one end facing the photosensitive element 30, which is communicated with the outside. Specifically, the light shielding member 41 moves synchronously with the key and is used for shielding the light flux emitted to the light receiving surface of the photosensitive assembly 30, and the first light shielding cavity 411 is arranged on the light shielding member 41, so that when a user presses the key, the first light shielding cavity 411 blocks the light flux emitted from external light to the photosensitive assembly 30, and thus the user can control the light flux emitted from the external light to the photosensitive assembly 30 by pressing the key, so as to realize different key functions. Further, a light blocking paint may be coated on the wall of the first light blocking chamber 411 to make the light blocking effect of the first light blocking chamber 411 better, such as a black paint, a purple paint, a brown paint, etc., if necessary.
In another embodiment of the present invention, as shown in fig. 1, 2 and 3, the photo-electric sensing type key switch further includes a housing 10, the pressing component 40 is movably mounted on the housing 10 to drive the light shielding component 41 to move relative to the light receiving surface of the photosensitive component 30, the housing 10 is provided with a light transmitting area 13 for emitting light toward the photosensitive component 30, the housing 10 is provided with a second light shielding cavity 14, one end of the second light shielding cavity 14 facing the light transmitting area 13 is provided with a light transmitting opening 141, the photosensitive component 30 is located in the second light shielding cavity 14, and the light receiving surface of the photosensitive component 30 faces the light transmitting opening 141. Specifically, the light-transmitting area 13 of the housing 10 can receive external light, the cavity wall of the second light-shielding cavity 14 is used for blocking light, so that the light-transmitting opening 141 is the only way for light to irradiate into the second light-shielding cavity 14, the light-shielding member 41 can block the angle of light irradiated from the light-transmitting opening 141 to the light-receiving surface of the photosensitive assembly 30, so that the angle of external light irradiating to the light-transmitting opening 141 is continuously reduced in the process that the light-shielding member 41 moves towards the light-transmitting opening 141, that is, the angle at which the external light can irradiate into the light-transmitting opening 141 is continuously reduced, thereby controlling the luminous flux of the external light irradiating to the photosensitive assembly 30, and realizing the stepless linear control function of the key, and the. Further, a light-blocking paint may be coated on the wall of the second light-blocking chamber 14 to improve the light-blocking effect of the second light-blocking chamber 14, such as a black paint, a purple paint, a brown paint, etc., if necessary.
In another embodiment of the present invention, as shown in fig. 2, 3 and 4, the pressing assembly 40 includes a pressing member 42 and an elastic member 43, the pressing chamber 16 is disposed on the housing 10, the pressing member 42 is installed in the pressing chamber 16, the elastic member 43 abuts between a chamber wall of the pressing chamber 16 and the pressing member 42, and the light shielding member 41 is disposed on the pressing member 42. Specifically, the pressing cavity 16 is located at the side of the second light shielding cavity 14 and extends in the same direction as the second light shielding cavity 14, and the pressing cavity 16 can guide the pressing member 42 to move along the direction perpendicular to the light transmitting opening 141, so as to guide the light shielding member 41 to move close to or away from the light transmitting opening 141; in the initial state, the pressing member 42 drives the light shielding member 41 to be located above the light transmitting opening 141 under the elastic force of the elastic member 43, and the external light can be emitted to the photosensitive element 30 through the light transmitting opening 141; then, when the pressing member 42 is pressed, the spring is pressed, the pressing member 42 moves downwards along the pressing cavity 16, the light shielding member 41 moves towards the light transmitting opening 141 and gradually shields the external light to the light transmitting opening 141, so as to change the luminous flux of the light sensitive component 30 receiving the external light, and realize different key functions. Wherein the elastic member 43 may be a spring, a torsion spring, an elastic sheet, etc., and is disposed as required.
In another embodiment of the present invention, as shown in fig. 1, 2 and 5, the housing 10 includes a light shielding shell 11 and a light transmitting shell 12 mounted on the light shielding shell 11, the second light shielding cavity 14 is disposed on the light shielding shell 11, and the light transmitting shell 12 is transparent to form the light transmitting area 13. Specifically, the light shielding shell 11 is a light-tight shell, the light-transmitting shell 12 is a transparent shell, and the second light-shielding cavity 14 is disposed on the light shielding shell 11, so that when the photosensitive element 30 is disposed in the second light-shielding cavity 14, the photosensitive element 30 can only receive external light through the light-transmitting opening 141; then, by arranging the light-transmitting shell 12 on the light-shielding shell 11, the light-transmitting shell 12 can naturally transmit the external light, so that the light-transmitting opening 141 naturally transmits the external light to the photosensitive component 30 when not completely shielded by the first light-shielding cavity 411, and no additional light source is needed, thereby effectively simplifying the structure of the key and saving the manufacturing cost of the key.
In another embodiment of the present invention, as shown in fig. 2, 3 and 4, the optoelectronic switch button further includes an LED lamp 50, the LED lamp 50 is mounted on the circuit board 20 and electrically connected to the circuit board 20, and the LED lamp 50 emits light toward the light-transmitting casing 12. Specifically, by arranging the LED lamp 50 on the circuit board 20, the LED lamp 50 can emit light toward the light-transmitting casing 12 in an opened state, so that the light from the LED lamp 50 can be collected on the light-transmitting casing 12 to irradiate the photosensitive assembly 30, thereby ensuring that the photosensitive assembly 30 is not affected by the intensity of the external natural light, and maintaining the sensitivity of the photosensitive assembly 30. And can set up LED lamp 50 as required to various colorful lights for this light shines and forms good decorative effect on printing opacity shell 12, gives user's good visual experience.
In another embodiment of the present invention, as shown in fig. 2 and 6, the light shielding shell 11 is provided with a light guiding cavity 15, one end of the light guiding cavity 15 facing the light transmitting shell 12 is provided with a light guiding opening 151, and the LED lamp 50 is located in the light guiding cavity 15 and emits light towards the light transmitting shell 12 through the light guiding opening 151. Specifically, through set up light guide cavity 15 on shading shell 11, establish LED lamp 50 cover in light guide cavity 15, then through leaded light opening 151 with LED lamp 50's light directive ground directive shell 12, realize the light effective control to LED lamp 50 jets out, avoid the random scattering of LED lamp 50's light, the reinforcing is to the effect of shining of light guide shell 12.
In another embodiment of the present invention, as shown in fig. 2, 3 and 4, the photosensitive element 30 includes a photosensitive element 31, the photosensitive element 31 is mounted on the circuit board 20 and electrically connected to the circuit board 20, and the photosensitive element 31 is located in the second light-shielding cavity 14. Specifically, the photosensitive element 31 is configured to receive light from the light-transmitting opening 141, the photosensitive element 31 converts a received light signal into a photocurrent signal, the photosensitive element 31 is communicated with a controller on the circuit board 20 through the sent photocurrent signal to form an electrical path, and the controller collects the photocurrent signal on the photosensitive element 31 to obtain a corresponding execution signal, so that the execution signal is changed to control different key functions of the key, thereby implementing control over key function output, and the use is very convenient.
In another embodiment of the present invention, as shown in fig. 2, 3 and 4, the light sensing assembly 30 further includes a light guide 32, and the light guide 32 is disposed on the light sensing element 31 and is used for guiding the light from the light-transmitting opening 141 to be incident on the light sensing element 31. Specifically, the light guide 32 is disposed in the second light shielding cavity 14 and between the light transmitting opening 141 and the light sensitive element 31 to guide the light at the light transmitting opening 141 to the light sensitive element 31, so that the light sensitive element 31 can better receive the light at the light transmitting opening 141, and the sensitivity of the light sensitive element 31 is ensured. Wherein, through setting up an annular sleeve 18 on lightproof shell 11 for the partial holding of leaded light 32 is in annular sleeve 18, and the opening towards lightproof 41 one end of annular sleeve 18 forms printing opacity opening 141, like this when lightproof 41 is being pressed and the in-process that moves, just can make first shading chamber 411 directly cover establish the periphery at annular sleeve 18, with the luminous flux of control light entering printing opacity opening 141, excellent in use effect.
The embodiment of the invention also provides a keyboard which comprises the photoelectric induction type key switch.
According to the keyboard provided by the embodiment of the invention, due to the adoption of the photoelectric induction type key switch, different key triggering functions can be realized when the photosensitive component 30 receives different luminous fluxes, so that a user can randomly set key triggering points between the maximum luminous flux and the minimum luminous flux of the photosensitive component 30, and a stepless linear control function of keys is realized. In the electronic competitive game, a game player can set the pressing stroke of the key as the trigger stroke of the switch according to the requirement of the game player, the sensitivity of the key is high, the user experience is good, the structure is simple, and the manufacturing cost is low.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A photoelectric induction type key switch is characterized in that: the pressing component is provided with a light shielding piece, and the light shielding piece and the light receiving surface of the photosensitive component are arranged at intervals; when the pressing component is pressed, the light shielding component can move relative to the light receiving surface of the photosensitive component to change the light receiving amount of the photosensitive component, so that the photocurrent signal of the photosensitive component changes; the circuit board is provided with a controller, the controller is electrically connected with the photosensitive assembly, and the controller is used for receiving the photocurrent signal and outputting an execution signal corresponding to the numerical value of the photocurrent signal.
2. The photoelectric sensing type key switch according to claim 1, wherein: one end of the shading piece, which faces the photosensitive assembly, is provided with a first shading cavity communicated with the outside.
3. The photoelectric sensing type key switch according to claim 2, wherein: the photoelectric sensing type key switch further comprises a shell, the pressing component is movably mounted on the shell to drive the shading component to move relative to the light receiving surface of the photosensitive component, a light transmitting area which emits light towards the photosensitive component is arranged on the shell, a second shading cavity is arranged on the shell, a light transmitting opening is formed in one end, facing the light transmitting area, of the second shading cavity, the photosensitive component is located in the second shading cavity, and the light receiving surface of the photosensitive component faces the light transmitting opening.
4. The photoelectric sensing type key switch according to claim 3, wherein: the pressing assembly comprises a pressing piece and an elastic piece, a pressing cavity is formed in the shell, the pressing piece is installed in the pressing cavity, the elastic piece abuts against the cavity wall of the pressing cavity and between the pressing piece, and the shading piece is arranged on the pressing piece.
5. The photoelectric sensing type key switch according to claim 4, wherein: the shell comprises a shading shell and a light-transmitting shell arranged on the shading shell, the second shading cavity is arranged on the shading shell, and the light-transmitting shell is formed in a transparent shape and forms the light-transmitting area.
6. The photoelectric sensing type key switch according to claim 5, wherein: the photoelectric switch key further comprises an LED lamp, the LED lamp is mounted on the circuit board and electrically connected with the circuit board, and the LED lamp faces the light transmitting shell to emit light.
7. The photoelectric sensing type key switch according to claim 6, wherein: the LED lamp is characterized in that a light guide cavity is arranged on the shading shell, a light guide opening is formed in one end, facing the light transmitting shell, of the light guide cavity, and the LED lamp is located in the light guide cavity and faces the light transmitting shell through the light guide opening to emit light.
8. The photoelectric induction type key switch according to any one of claims 3 to 7, wherein: the photosensitive assembly comprises a photosensitive element, the photosensitive element is mounted on the circuit board and electrically connected with the circuit board, and the photosensitive element is located in the second shading cavity.
9. The photoelectric sensing type key switch according to claim 8, wherein: the photosensitive component further comprises a light guide part, and the light guide part is arranged on the photosensitive element and used for guiding the light rays of the light-transmitting opening to be emitted into the photosensitive element.
10. A keyboard, comprising: the photoelectric induction type key switch comprises the photoelectric induction type key switch of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010557349.0A CN111696812A (en) | 2020-06-18 | 2020-06-18 | Photoelectric induction type key switch and keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010557349.0A CN111696812A (en) | 2020-06-18 | 2020-06-18 | Photoelectric induction type key switch and keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111696812A true CN111696812A (en) | 2020-09-22 |
Family
ID=72481915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010557349.0A Pending CN111696812A (en) | 2020-06-18 | 2020-06-18 | Photoelectric induction type key switch and keyboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111696812A (en) |
-
2020
- 2020-06-18 CN CN202010557349.0A patent/CN111696812A/en active Pending
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