CN212032926U - Photoelectric switch key and keyboard - Google Patents

Abstract

The utility model belongs to the technical field of the keyboard, especially, relate to a photoelectric switch button and keyboard, photoelectric switch button includes the casing, a circuit board, photosensitive element and pressing the subassembly, be equipped with shading chamber on the casing and with the first printing opacity opening of shading chamber intercommunication, photosensitive element be located the shading intracavity and with circuit board electric connection, the casing has the printing opacity district that supplies external light process and directive photosensitive element, pressing the subassembly and having shading portion and printing opacity portion, pressing subassembly movable mounting so that shading portion and printing opacity portion can remove first printing opacity opening relatively on the casing, the shading portion is used for blockking light directive photosensitive element, printing opacity portion is used for supplying light through with directive photosensitive element. When the key is used, light rays in the light-transmitting area can be emitted to the photosensitive element from all directions through the first light-transmitting opening, and the function of the key is achieved. The infrared emission geminate transistors do not need to be additionally arranged to provide a light source, so that the key is simple and compact in structure, the miniaturization development of the key is facilitated, and the manufacturing cost is lower.

Description

Photoelectric switch key and keyboard

Technical Field

The utility model belongs to the technical field of the keyboard, especially, relate to a photoelectric switch button and keyboard.

Background

The keys of the keyboard are generally classified into a mechanical contact type and a photoelectric switch type, in which a light emitting element and a light receiving element are oppositely disposed to form a light path in a light opposite manner by using an optical principle and a photoelectric coupling technology, and a circuit switch is implemented by a light blocking member for switching off and on the light path to change a circuit impedance. The existing photoelectric switch key needs to emit light through the emitting element, and parts except the light blocking piece cannot be arranged between the receiving element and the emitting element, so that the light is prevented from being conducted between the receiving element and the emitting element, the key structure is complex, the size is large, and the key is not suitable for miniaturization development.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a photoelectric switch button and keyboard aims at solving the photoelectric switch button structure among the prior art complicacy, is not suitable for the technical problem of miniaturized development.

In order to achieve the above object, the utility model adopts the following technical scheme: a photoelectric switch key comprises a shell, a circuit board, a photosensitive element and a pressing assembly, wherein a shading cavity and a first light-transmitting opening communicated with the shading cavity are formed in the shell, the photosensitive element is located in the shading cavity and electrically connected with the circuit board, the shell is provided with a light-transmitting area through which external light passes and emits to the photosensitive element, the pressing assembly is provided with a shading part and a light-transmitting part, the pressing assembly is movably mounted on the shell so that the shading part and the light-transmitting part can move relative to the first light-transmitting opening, the shading part is used for blocking light from emitting to the photosensitive element, and the light-transmitting part is used for allowing light to pass so as to emit to the photosensitive element.

Optionally, the pressing assembly includes a pressing member and an elastic member, the pressing member is movably mounted on the housing, the elastic member abuts against between the housing and the pressing member, and the light shielding portion and the light transmitting portion are disposed on the pressing member.

Optionally, a moving body is arranged on the pressing member, a second light-transmitting opening is arranged on the moving body to form the light-transmitting portion, and the light-shielding portion is formed by a structure located beside the second light-transmitting opening on the moving body.

Optionally, a guide body is further arranged on the pressing member, a guide sleeve is arranged on the shell, the central axis of the guide body and the central axis of the guide sleeve are located on the same straight line, one end of the elastic member is sleeved on the guide body, the other end of the elastic member is sleeved on the guide sleeve, and the guide body is used for being inserted into the guide sleeve.

Optionally, the moving body and the guide body extend in the same direction, and the first light-transmitting opening is disposed toward the moving body.

Optionally, an avoidance groove for avoiding the moving body is formed in the circuit board.

Optionally, the housing includes a light shielding shell and a light transmitting shell mounted on the light shielding shell, the light shielding cavity is disposed on the light shielding shell, and the light transmitting shell is transparent to form 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.

The embodiment of the utility model provides a photoelectric switch button's beneficial effect: compared with the prior art, the photoelectric switch key of the utility model has the advantages that the photosensitive element is electrically connected with the circuit board to form an electrical path, so that when the pressing component is not pressed down, the shading part is positioned at the first light-transmitting opening, the photosensitive element cannot receive the light of the light-transmitting area at the moment, and the electrical path is disconnected; when the pressing component is pressed down, the light-transmitting part is located at the first light-transmitting opening, the photosensitive element can receive light from the light-transmitting area (namely, the light of the light-transmitting area can shoot to the photosensitive element from all directions through the first light-transmitting opening), and the electric passage is in a conducting state, so that the function of the key is realized. When a user presses the key, the light-transmitting part is located at the first light-transmitting opening, so that the sensitivity of the key is effectively improved, and the user experience is good. And, the utility model discloses photoelectric switch button is owing to can make external light jet into the casing through light zone directness, consequently need not additionally set up the infrared emission geminate transistor and provide the light source for the structure of button is simpler, compact, does benefit to the miniaturized development of button, and the cost of manufacture is lower.

The embodiment of the utility model provides another technical scheme: a keyboard comprises the photoelectric switch key.

The keyboard provided by the embodiment of the utility model has the advantages that the photoelectric switch keys are used, so that a user can easily and sensitively press the keys, and good use experience is provided for the user; and do benefit to the miniaturized development of the keyboard of the embodiment of the utility model, the cost of manufacture is also lower.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced 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 without inventive labor.

Fig. 1 is a schematic structural diagram of a photoelectric switch button provided in an embodiment of the present invention;

FIG. 2 is an exploded view of the optoelectronic switch button of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the electro-optical switch key of FIG. 1 in an un-pressed state;

FIG. 4 is a schematic cross-sectional view of the optoelectronic switch button of FIG. 1 in a pressed state;

fig. 5 is a schematic structural view of a pressing member of the optoelectronic switch key shown in fig. 2.

Wherein, in the figures, the respective reference numerals:

10-a housing; 11-a light-shielding cavity; 12-a light-transmitting region; 13-a guide sleeve; 14-a light-shielding shell; 15-a light-transmitting shell; 16-a light guide cavity; 17-a light guide opening; 111 — a first light transmissive opening; 20-a circuit board; 21-avoidance groove; 30-a photosensitive element; 40-a pressing component; 41-light shielding portion; 42-a light-transmitting portion; 42 — a second light transmissive opening; 43-a pressing member; 44-an elastic member; 45-a mobile body; 46-a guide body; 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 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. 1-5 are exemplary and intended to be used to illustrate the invention, but should not 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 those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not 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 limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 2, 3 and 4, the photoelectric switch key according to the embodiment of the present invention will now be described. The photoelectric switch key comprises a shell 10, a circuit board 20, a photosensitive element 30 and a pressing assembly 40, wherein the shell 10 is provided with a shading cavity 11 and a first light-transmitting opening 111 communicated with the shading cavity 11, the photosensitive element 30 is positioned in the shading cavity 11 and is electrically connected with the circuit board 20, the shell 10 is provided with a light-transmitting area 12 through which external light passes and emits to the photosensitive element 30, the pressing assembly 40 is provided with a shading part 41 and a light-transmitting part 42, the pressing assembly 40 is movably arranged on the shell 10 so that the shading part 41 and the light-transmitting part 42 can move relative to the first light-transmitting opening 111, the shading part 41 is used for blocking the light from the photosensitive element 30, and the light-transmitting part 42 is used for allowing the light to pass and emit to the photosensitive element.

Compared with the prior art, the photoelectric switch key provided by the embodiment of the present invention has the advantages that since the photosensitive element 30 is electrically connected to the circuit board 20 to form an electrical path, when the pressing component 40 is not pressed down, the shading portion 41 is located at the first light-transmitting opening 111, at this time, the photosensitive element 30 cannot receive the light of the light-transmitting area 12, and the electrical path is disconnected; when the pressing assembly 40 is pressed, the light-transmitting portion 42 is located at the first light-transmitting opening 111, and at this time, the photosensitive element 30 can receive light from the light-transmitting region 12 (i.e., the light of the light-transmitting region 12 can be emitted to the photosensitive element 30 through the first light-transmitting opening 111 from various directions), and the electrical path is in a conducting state, thereby implementing the function of a key. When a user presses the key, the light-transmitting portion 42 is located at the first light-transmitting opening 111, so that the sensitivity of the key is effectively improved, and the user experience is good. And, the utility model discloses photoelectric switch button is owing to can directly make external light jet into casing 10 through light zone 12, consequently need not additionally set up the infrared emission geminate transistor and provide the light source for the structure of button is simpler, compact, does benefit to the miniaturized development of button, and the cost of manufacture is lower.

In another embodiment of the present invention, as shown in fig. 2, 3 and 4, the pressing assembly 40 includes a pressing member 43 and an elastic member 44, the pressing member 43 is movably mounted on the casing 10, the elastic member 44 abuts between the casing 10 and the pressing member 43, and the light shielding portion 41 and the light transmitting portion 42 are disposed on the pressing member 43. Specifically, when the pressing member 43 is not pressed, the pressing member 43 drives the light shielding portion 41 to be located at the position of the first light-transmitting opening 111 under the elastic force of the elastic member 44, and at this time, the first light-transmitting opening 111 is shielded, and light cannot be emitted to the photosensitive element 30; then, when the pressing member 43 is pressed, the spring is pressed, and at this time, the pressing member 43 moves along the pressing direction, so that the light-transmitting portion 42 moves toward the first light-transmitting opening 111 until the light-transmitting portion 42 moves to the first light-transmitting opening 111, so that the external light is emitted from the first light-transmitting opening 111 to the photosensitive element 30, and at this time, the electrical path is conducted, thereby realizing the key function. When the user releases the pressing member 43, the elastic member 44 drives the light shielding portion 41 to move back to shield the first light-transmitting opening 111, so that the electrical path is disconnected. Wherein the elastic member 44 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. 3, 4 and 5, the pressing member 43 is provided with a moving body 45, the moving body 45 is provided with a second light-transmitting opening 42a to form the light-transmitting portion 42, and the moving body 45 is provided with a light-shielding portion 41 formed at a side of the second light-transmitting opening 42 a. Specifically, by providing the second light-transmitting opening 42a on the moving body 45, when the user presses the pressing member 43, the second light-transmitting opening 42a on the moving body 45 moves towards the first light-transmitting opening 111, so that a path through which light passes is formed by forming a cross layer between the first light-transmitting opening 111 and the second light-transmitting opening 42a, and light emitted from the light-transmitting region 12 into the housing 10 can be emitted to the photosensitive element 30 from all directions, thereby completing the key function without setting a single light-transmitting path; after the user loosens the pressing piece 43, the moving body 45 rebounds, so that other parts on the moving body 45 can cover the first light-transmitting opening 111.

In another embodiment of the present invention, as shown in fig. 3, 4 and 5, the pressing member 43 is further provided with a guiding body 46, the casing 10 is provided with a guiding sleeve 13, the central axis of the guiding body 46 and the central axis of the guiding sleeve 13 are located on the same straight line, a sleeve of the elastic member 44 is disposed on the guiding body 46, the other sleeve of the elastic member 44 is disposed on the guiding sleeve 13, and the guiding body 46 is used for being inserted into the guiding sleeve 13. Specifically, the elastic member 44 is preferably a spring, two ends of the spring are sleeved between the guide body 46 and the guide sleeve 13, and the guide sleeve 13 is used for limiting the guide body 46 to move in the extending direction of the guide sleeve 13 (i.e., limiting the pushing member 43 to move back and forth along a predetermined direction when being pushed), so that the light shielding portion 41 and the light transmitting portion 42 can be ensured to move along a predetermined path, thereby accurately controlling the light to be emitted to the first light transmitting opening 111, i.e., accurately realizing the key function, and having a good use effect.

In another embodiment of the present invention, as shown in fig. 3, 4 and 5, the moving body 45 and the guiding body 46 extend in the same direction, and the first light-transmitting opening 111 is disposed toward the moving body 45. Specifically, the moving body 45 has a strip shape, the first light-transmitting opening 111 is located at a side of the moving body 45, and the light-transmitting portion 42 and the light-shielding portion 41 are arranged along a direction in which the moving body 45 (i.e., the guide body 46) extends, so that when the moving body 45 moves back and forth along the direction guided by the guide body 46, the light-transmitting portion 42 and the light-shielding portion 41 are located at positions of the first light-transmitting opening 111, respectively, to control light entering the first light-transmitting opening 111.

In another embodiment of the present invention, as shown in fig. 2 and 3, the circuit board 20 is provided with an avoidance groove 21 for avoiding the moving body 45. Specifically, by providing the avoiding groove 21 on the circuit board 20, the moving body 45 can be conveniently moved relative to the first light-transmitting opening 111, and the housing is prevented from being jammed.

In another embodiment of the present invention, as shown in fig. 1, 2 and 3, the housing 10 includes a light shielding shell 14 and a light transmitting shell 15 installed on the light shielding shell 14, the light shielding cavity 11 is disposed on the light shielding shell 14, and the light transmitting shell 15 is transparent to form the light transmitting area 12. Specifically, the light shielding shell 14 is a light-tight shell 15, the light-transmitting shell 15 is a transparent shell, and the light shielding cavity 11 is arranged on the light shielding shell 14, so that when the photosensitive element 30 is arranged in the light shielding cavity 11, the photosensitive element 30 can only receive external light through the first light-transmitting opening 111; then, by arranging the light-transmitting shell 15 on the light-shielding shell 14, the light-transmitting shell 15 can naturally transmit external light into the housing 10, so that the first light-transmitting opening 111 naturally transmits the external light to the photosensitive element 30 when the key is pressed down, the electrical path is in a conducting state, no additional light source is needed, the structure of the key is effectively simplified, and the manufacturing cost of the key is saved.

In another embodiment of the present invention, as shown in fig. 1, 2 and 3, the optoelectronic switch further includes an LED lamp 50, the LED lamp 50 is installed on the circuit board 20 and electrically connected to the circuit board 20, and the LED lamp 50 emits light toward the transparent shell 15. Specifically, by disposing the LED lamp 50 on the circuit board 20, the LED lamp 50 can emit light toward the light-transmitting housing 15 in an open state, so that stronger light can be collected on the light-transmitting housing 15 to irradiate the photosensitive element 30, thereby maintaining the sensitivity of the photosensitive element 30; and can set up LED lamp 50 as required into various colorful lights for this light shines and forms good decorative effect on printing opacity shell 15, gives user's good visual experience.

In another embodiment of the present invention, as shown in fig. 3 and 4, the light shielding shell 14 is provided with a light guiding cavity 16, the light guiding cavity 16 is provided with a light guiding opening 17 towards one end of the light transmitting shell 15, and the LED lamp 50 is located in the light guiding cavity 16 and emits light towards the light transmitting shell 15 through the light guiding opening 17. Specifically, through set up light guide cavity 16 on shading shell 14, establish LED lamp 50 cover in light guide cavity 16, then through light guide opening 17 with LED lamp 50's light directive ground directive shell 15, 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 printing opacity shell 15.

The embodiment of the utility model provides a keyboard is still provided, including foretell photoelectric switch button.

The keyboard provided by the embodiment of the utility model has the advantages that the photoelectric switch keys are used, so that a user can easily and sensitively press the keys, and good use experience is provided for the user; and do benefit to the miniaturized development of the keyboard of the embodiment of the utility model, the cost of manufacture is also lower.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A photoelectric switch key is characterized in that: the light-shading and light-transmitting integrated circuit comprises a shell, a circuit board, a light-sensitive element and a pressing assembly, wherein a light-shading cavity and a first light-transmitting opening communicated with the light-shading cavity are formed in the shell, the light-sensitive element is located in the light-shading cavity and is electrically connected with the circuit board, the shell is provided with a light-transmitting area through which external light passes and emits to the light-sensitive element, the pressing assembly is provided with a light-shading portion and a light-transmitting portion, the pressing assembly is movably mounted on the shell so that the light-shading portion and the light-transmitting portion can move relative to the first light-transmitting opening, the light-shading portion is used for blocking the light from emitting to the light-sensitive element, and the.

2. The electro-optical switch key of claim 1, wherein: the pressing assembly comprises a pressing piece and an elastic piece, the pressing piece is movably mounted on the shell, the elastic piece is abutted between the shell and the pressing piece, and the shading part and the light transmission part are arranged on the pressing piece.

3. The electro-optical switch key of claim 2, wherein: the pressing piece is provided with a moving body, the moving body is provided with a second light-transmitting opening to form the light-transmitting part, and the light-shielding part is formed by a structure, positioned on the side of the second light-transmitting opening, of the moving body.

4. The electro-optical switch key of claim 3, wherein: the pressing piece is further provided with a guide body, the shell is provided with a guide sleeve, the central axis of the guide body and the central axis of the guide sleeve are located on the same straight line, one end of the elastic piece is sleeved on the guide body, the other end of the elastic piece is sleeved on the guide sleeve, and the guide body is used for being inserted into the guide sleeve.

5. The electro-optical switch key of claim 4, wherein: the moving body and the guide body extend in the same direction, and the first light-transmitting opening is arranged facing the moving body.

6. The electro-optical switch key of claim 3, wherein: and an avoidance groove for avoiding the moving body is arranged on the circuit board.

7. The optoelectronic switch button as set forth in any one of claims 1 to 6, wherein: the shell comprises a shading shell and a light-transmitting shell arranged on the shading shell, the shading cavity is arranged on the shading shell, and the light-transmitting shell is transparent to form the light-transmitting area.

8. The electro-optical switch key of claim 7, 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.

9. The electro-optical switch key of claim 8, 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.

10. A keyboard, comprising: comprising an optoelectronic switch button according to any one of claims 1 to 9.

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