CN211828573U - Photoelectric switch key and keyboard - Google Patents

Abstract

The utility model belongs to the technical field of keyboards, in particular to a photoelectric switch key and a keyboard, wherein the photoelectric switch key comprises a shell, a circuit board, a photosensitive component and a pressing component, the photosensitive component is electrically connected with the circuit board, the pressing component is provided with a shading part, and the pressing component is movably arranged on the shell so that the shading part can move relative to the light receiving surface of the photosensitive component; when the shading piece is far away from the light receiving surface of the photosensitive assembly, the photosensitive assembly can receive external light; when the pressing component is pressed, the light shielding component is close to and shields the light receiving surface of the photosensitive component. When a user presses the key, the light shading piece can completely shade the light emitted to the photosensitive assembly from the light transmitting area, the function of the key is realized, and the sensitivity of the key is effectively improved. And an infrared emission geminate transistor is not required to be additionally arranged to provide a light source, so that the structure is simpler and more compact, and the miniaturization development of the key is facilitated.

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 keypad keys are generally classified into a mechanical contact type and a photoelectric switch type, in which a photoelectric switch type keypad uses an optical principle and a photoelectric coupling technology, a light path is formed by a transmitting element and a receiving element, and a light blocking member performs switching on and off of the light path to change circuit impedance to realize circuit switching. When the existing photoelectric switch key is used, generally, when the key is not pressed down, the light path is disconnected, and the key is in a normal state; when an operator presses a key, the photosensitive element (receiving element) receives an optical signal sent by the transmitting element to form a path to change circuit impedance to realize circuit switching, so that the key function is realized, but by adopting the mode, the photosensitive element can not normally receive the optical signal sometimes when the key is pressed, so that the phenomenon that the key is not sensitive to pressing is caused; in addition, an emitting element is additionally arranged on the key to emit an optical signal, so that the structure is complex and the cost is increased.

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 among the prior art and easily appears pressing insensitive condition and the technical problem that the structure is complicated.

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 assembly and a pressing assembly, wherein the photosensitive assembly is electrically connected with the circuit board, the pressing assembly is provided with a shading piece, and the pressing assembly is movably arranged on the shell so that the shading piece can move relative to a light receiving surface of the photosensitive assembly; when the light shielding piece is far away from the light receiving surface of the photosensitive component, the photosensitive component can receive external light; when the pressing component is pressed, the light shielding component is close to and shields the light receiving surface of the photosensitive component.

Optionally, a second light shielding cavity communicated with the outside is arranged at one end of the light shielding member facing the photosensitive assembly, and the second light shielding cavity is used for covering the photosensitive assembly and shielding the light receiving surface of the photosensitive assembly.

Optionally, the housing is covered on the photosensitive assembly, a light-transmitting area which emits light towards the photosensitive assembly is arranged on the housing, a first light-shielding cavity is arranged on the housing, a light-transmitting opening is arranged at one end of the first light-shielding cavity which faces the light-transmitting area, the photosensitive assembly is located in the first light-shielding cavity, and the second light-shielding cavity is used for blocking light from emitting to the photosensitive assembly through 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 first light shielding cavity is disposed on the light shielding shell, and the light transmitting shell is formed in a transparent shape 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.

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 first 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 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 component and the circuit board are electrically connected to form an electrical path, and when the photosensitive component receives light from the light-transmitting area, the electrical path is in a disconnected state; when the photosensitive component can not receive the light of the light-transmitting area, the electric passage is conducted, and the function of the key is realized at the moment. When the user presses the key, the light shading part can completely shade the light emitted to the photosensitive component from the outside, the function of the key is realized, 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 the external light of direct receipt, 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 utility model discloses keyboard owing to use there is foretell photoelectric switch button, can be so that the user can relax, sensitively press the button, experiences for user's good use to simple structure, the cost of manufacture is low.

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

FIG. 3 is a schematic cross-sectional view of the optoelectronic switch of FIG. 1 in a pressed state;

FIG. 4 is an exploded view of the optoelectronic switch button of FIG. 1;

FIG. 5 is a schematic view of a light shielding shell of the optoelectronic switch key of FIG. 4;

fig. 6 is a schematic structural diagram of a pressing member of the optoelectronic switch key shown in fig. 4.

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 first 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 — second 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 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. 1-6 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 component 30 and a pressing component 40, wherein the photosensitive component 30 is electrically connected with the circuit board 20, the pressing component 40 is provided with a light shielding piece 41, and the pressing component 40 is movably arranged on the shell 10 so that the light shielding piece 41 can move relative to a light receiving surface of the photosensitive component 30; when the light shielding member 41 is far away from the light receiving surface of the photosensitive element 30, the photosensitive element 30 can receive external light; when the pressing member 40 is pressed, the light blocking member 41 approaches and blocks the light receiving surface of the photosensitive member 30.

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 the electrical path, when the photosensitive element 30 receives the light from the light-transmitting area 13, the electrical path is in a disconnected state; when the photosensitive element 30 cannot receive the light from the transparent region 13, the electrical path is conducted, and the function of the key is realized. When the user presses the key, the light shielding member 41 completely shields the light emitted from the outside to the photosensitive assembly 30, so that the function of the key is realized, 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 the external light of direct receipt, 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 6, a second light shielding cavity 411 is disposed on the light shielding member 41 toward one end of the photosensitive element 30 and is communicated with the outside, and the second light shielding cavity 411 is used for covering the photosensitive element 30 and shielding the light receiving surface of the photosensitive element 30. Specifically, the light shielding member 41 moves synchronously with the key, and the second light shielding cavity 411 is arranged on the light shielding member 41, and the cavity wall of the second light shielding cavity 411 is black, so that complete light shielding can be achieved, and when a user presses the key, the second light shielding cavity 411 is completely covered outside the photosensitive element 30 to block external light from irradiating the light receiving surface of the photosensitive element 30, so that the purpose of conducting an electrical path is achieved.

In another embodiment of the present invention, as shown in fig. 2, 3 and 5, the casing 10 covers the photosensitive assembly 30, the casing 10 is provided with a light-transmitting area 13 for emitting light toward the photosensitive assembly 30, the casing 10 is provided with a first light-shielding cavity 14, the first light-shielding cavity 14 is provided with a light-transmitting opening 141 toward one end of the light-transmitting area 13, the photosensitive assembly 30 is located in the first light-shielding cavity 14, and the light-shielding member 41 is used for blocking light from being emitted to the photosensitive assembly 30 through the light-transmitting opening 141. Specifically, the light-transmitting area 13 of the housing 10 can receive external light, the wall of the first light-shielding cavity 14 is black to shield light, and the light-transmitting opening 141 is the only way for light to irradiate into the first light-shielding cavity 14, so that the light-shielding efficiency of the light-shielding member 41 can be effectively improved, and when the key is pressed, the light-shielding member 41 can shield the light-transmitting opening 141, so that the sensitivity of the key is effectively improved.

In another embodiment of the present invention, as shown in fig. 2, 3 and 5, the pressing assembly 40 includes a pressing member 42 and an elastic member 43, the casing 10 is provided with a pressing cavity 16, the pressing member 42 is installed in the pressing cavity 16, the elastic member 43 abuts between the cavity wall of the pressing cavity 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 first shading cavity 14 and extends in the same direction as the first shading 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 at this time, the 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, and at this time, the pressing member 42 moves downward along the pressing cavity 16, and the light shielding member 41 moves toward the light transmitting opening 141 until the light shielding member 41 completely shields the light transmitting opening 141, so that the electrical path is conducted, and the key function is realized. When the user releases the pressing member 42, the elastic member 43 drives the light shielding member 41 to move upward, so that light enters the first light shielding cavity 14, and the electrical path is broken. 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. 2, 3, and 6, the elastic member 43 is preferably a spring, the pressing cavity 16 is provided with a guide member 17 extending in the same direction as the pressing cavity 16, the guide member 17 is provided with a guide cavity 171 extending in the same direction as the pressing cavity 16, an end of the spring is sleeved on the periphery of the guide member 17 and abutted against the guide member 17, the pressing member 42 is inserted into the guide cavity 171, the other end of the spring is abutted against the pressing member 42, the light shielding member 41 is located on the side of the pressing member 42 and forms an avoiding gap with the pressing member 42 at an interval, so that when the pressing member 42 is pressed downward, the second light shielding cavity 411 on the light shielding member 41 can well penetrate through the light transmission opening 141 and cover the photosensitive assembly 30, thereby achieving the complete light shielding effect. Moreover, when the pressing member 42 is pressed, and when the second light shielding cavity 411 on the light shielding member 41 is covered on the photosensitive assembly 30, the pressing member 42 is also in mechanical contact with the guide member 17, so that a certain mechanical touch feeling can be provided for a user, the user can well feel the in-place pressing feeling of the key, and the use effect is good.

In another embodiment of the present invention, as shown in fig. 1, 2 and 3, the housing 10 includes a light shielding shell 11 and a light transmitting shell 12 installed on the light shielding shell 11, the first light shielding cavity 14 is installed 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 12, the light-tight shell 12 is a transparent shell, and the first light shielding cavity 14 is disposed on the light shielding shell 11, so that when the photosensitive element 30 is disposed in the first light shielding cavity 14, the photosensitive element 30 can only receive external light through the light-tight 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 in a normal state (when the key is not pressed), the electrical path is in a disconnected 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. 2, 3 and 4, the optoelectronic switch 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 transparent shell 12. Specifically, by disposing the LED lamp 50 on the circuit board 20, the LED lamp 50 can emit light toward the light-transmitting casing 12 in an open state, so that stronger light can be collected on the light-transmitting casing 12 to irradiate the photosensitive assembly 30, thereby 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, 3 and 5, the light shielding shell 11 is provided with a light guiding cavity 15, the light guiding cavity 15 is provided with a light guiding opening 151 towards one end of the light transmitting shell 12, 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 assembly 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 first 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 an electrical signal, the photosensitive element 31 is communicated with a circuit module preset on the circuit board 20 through the electrical signal sent out to form an electrical path, when the photosensitive element 31 receives the light signal, the electrical path is in an off state, no corresponding key function is input at this time, and when the photosensitive element 31 does not receive the light signal, the electrical path is in an on state, and at this time, a corresponding key function is input. Wherein, the utility model discloses the circuit module that sets up on the circuit board 20 of embodiment is opposite with the control of conventional circuit to photoelectric coupling, the utility model discloses circuit board 20 of embodiment utilizes the reverse principle to realize the function of pressing the button.

In another embodiment of the present invention, as shown in fig. 2 and 3, the photosensitive assembly 30 further includes a light guide 32, the light guide 32 is disposed on the photosensitive element 31 and used for guiding the light of the light-transmitting opening 141 to be incident on the photosensitive element 31. Specifically, the light guide 32 is disposed in the first 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 the light shield 11 for the partial holding of leaded light 32 is in annular sleeve 18, and the opening towards light shield 41 one end of annular sleeve 18 forms printing opacity opening 141, like this when light shield 41 is being pressed and the in-process that moves, just can make second shading chamber 411 directly cover establish the periphery at annular sleeve 18, in order to shelter from light entering printing opacity opening 141 completely, excellent in use effect.

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

The utility model discloses keyboard owing to use has foretell photoelectric switch button, can be so that the user can relax, sensitively press the button, experiences for the good use of user to at simple structure, the cost of manufacture is low.

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 photosensitive component is electrically connected with the circuit board, the pressing component is provided with a shading piece, and the pressing component is movably arranged on the shell so that the shading piece can move relative to the light receiving surface of the photosensitive component; when the light shielding piece is far away from the light receiving surface of the photosensitive component, the photosensitive component can receive external light; when the pressing component is pressed, the light shielding component is close to and shields the light receiving surface of the photosensitive component.

2. The electro-optical switch key of claim 1, wherein: and one end of the shading piece facing the photosensitive assembly is provided with a second shading cavity communicated with the outside, and the second shading cavity is used for covering the photosensitive assembly and shading the light receiving surface of the photosensitive assembly.

3. The electro-optical switch key of claim 2, wherein: the shell is covered on the photosensitive assembly, a light-transmitting area which is towards the photosensitive assembly and emits light is arranged on the shell, a first shading cavity is arranged on the shell, a light-transmitting opening is formed in one end, facing the light-transmitting area, of the first shading cavity, the photosensitive assembly is located in the first shading cavity, and the second shading cavity is used for blocking light from emitting to the photosensitive assembly through the light-transmitting opening.

4. The electro-optical switch key of 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 electro-optical switch key of claim 3, wherein: the shell comprises a shading shell and a light-transmitting shell arranged on the shading shell, the first 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 electro-optical switch key of 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 electro-optical switch key of 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 electro-optical switch key of claim 3, 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 first shading cavity.

9. The electro-optical switch key of 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: comprising an optoelectronic switch button according to any one of claims 1 to 9.

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