CN111584280A - Photoelectric switch keys and keyboards - Google Patents

Abstract

The invention belongs to the technical field of keyboards, and particularly relates to a photoelectric switch key and a keyboard, wherein the photoelectric switch key comprises a shell, a circuit board, a photosensitive element and a pressing assembly, the shell is provided with a shading cavity and a first light-transmitting opening communicated with the shading cavity, the photosensitive element is positioned in the 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 photosensitive element, the pressing assembly is provided with a shading part and a light-transmitting part, the pressing assembly is movably arranged 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 the light from emitting to the photosensitive element, and the light-transmitting part is used for allowing. 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 keys and keyboards

technical field

The invention belongs to the technical field of keyboards, and in particular relates to a photoelectric switch key and a keyboard.

Background technique

Keyboard keys are generally divided into mechanical contact type and photoelectric switch type, among which the photoelectric switch type uses optical principle and photoelectric coupling technology, and the light emitting element and the light receiving element are set relative to each other, and the light path is formed in the way of light opposite. , the light blocking member is cutting and conducting the light path to change the circuit impedance to realize the circuit switch. The existing photoelectric switch buttons need to emit light through the emitting element, and there cannot be any components other than the light blocking member between the receiving element and the emitting element, so as to avoid affecting the conduction of light between the receiving element and the emitting element, thereby As a result, the key structure is complicated and the volume is too large, which is not suitable for miniaturization development.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a photoelectric switch key and a keyboard, which aims to solve the technical problem that the photoelectric switch key in the prior art has a complex structure and is not suitable for miniaturization development.

In order to achieve the above purpose, the technical solution adopted in the present invention is: a photoelectric switch button, comprising a casing, a circuit board, a photosensitive element and a pressing component, and the casing is provided with a light-shielding cavity and a light-shielding cavity communicated with the light-shielding cavity. The first light-transmitting opening, the photosensitive element is located in the light-shielding cavity and is electrically connected to the circuit board, the housing has a light-transmitting area for external light to pass through and shoot toward the photosensitive element, and the press The moving component has a light-shielding part and a light-transmitting part, and the pressing component is movably mounted on the casing so that the light-shielding part and the light-transmitting part can move relative to the first light-transmitting opening, and the light-shielding part The light-transmitting part is used for blocking the light from emitting to the photosensitive element, and the light-transmitting part is used for passing the light to the photosensitive element.

Optionally, the push assembly includes a push piece and an elastic piece, the push piece is movably mounted on the housing, and the elastic piece abuts between the housing and the push piece , the light-shielding part and the light-transmitting part are arranged on the pusher.

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

Optionally, a guide body is further provided on the pusher, a guide sleeve is provided on the housing, the central axis of the guide body and the central axis of the guide sleeve are located on the same line, the 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.

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 provided on the circuit board.

Optionally, the casing includes a light-shielding casing and a light-transmitting casing mounted on the light-shielding casing, the light-shielding cavity is provided on the light-shielding casing, and the light-transmitting casing is transparent to form the light-transmitting area. .

Optionally, the photoelectric switch button further includes an LED light, the LED light is mounted on the circuit board and is electrically connected to the circuit board, and the LED light emits light toward the light-transmitting case.

Optionally, the light-shielding shell is provided with a light-guiding cavity, and an end of the light-guiding cavity facing the light-transmitting shell is provided with a light-guiding opening, and the LED lamp is located in the light-guiding cavity and passes through the light-guiding cavity. The light opening emits light toward the light-transmitting shell.

The beneficial effects of the photoelectric switch button provided by the embodiment of the present invention: compared with the prior art, the photoelectric switch button of the present invention, because the photosensitive element and the circuit board are electrically connected to form an electrical path, then, when the pressing component is not pressed When the light-shielding portion is located at the first light-transmitting opening, the photosensitive element cannot receive the light in the light-transmitting area, and the electrical path is disconnected; and when the component is pressed down, the light-transmitting portion is located at the first light-transmitting opening. , at this time, the photosensitive element can receive the light from the light-transmitting area (that is, the light in the light-transmitting area can be directed to the photosensitive element from all directions through the first light-transmitting opening), and the electrical path is in a conducting state, thereby realizing the key Function. Then, when the user presses the button, the light-transmitting portion can be located at the first light-transmitting opening, which effectively improves the sensitivity of the button and provides a good user experience. In addition, the photoelectric switch button of the embodiment of the present invention can directly make the external light enter the casing through the light-transmitting area, so there is no need for additional infrared emission to provide a light source to the tube, so that the structure of the button is simpler and more compact, which is beneficial to the small size of the button. development, and the production cost is lower.

Another technical solution provided by the embodiments of the present invention: a keyboard, comprising the above-mentioned photoelectric switch keys.

The keyboard of the embodiment of the present invention uses the above-mentioned photoelectric switch keys, so that the user can easily and sensitively press the keys, giving the user a good use experience; and it is beneficial to the development of the miniaturization of the keyboard of the embodiment of the present invention, and the production cost is also higher. Low.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present invention. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is a schematic structural diagram of a photoelectric switch key provided by an embodiment of the present invention;

Fig. 2 is the exploded structure schematic diagram of the photoelectric switch button of Fig. 1;

3 is a schematic cross-sectional structure diagram of the photoelectric switch button of FIG. 1 in an unpressed state;

4 is a schematic cross-sectional structure diagram of the photoelectric switch button of FIG. 1 in a pressed state;

FIG. 5 is a schematic structural diagram of a push member of the photoelectric switch key of FIG. 2 .

Among them, each reference sign in the figure:

10-shell; 11-light-shielding cavity; 12-light-transmitting area; 13-guide sleeve; 14-light-shielding shell; 15-light-transmitting shell; 16-light-guiding cavity; 17-light-guiding opening; 111-first transparent 20—circuit board; 21—avoidance slot; 30—photosensitive element; 40—pressing component; 41—shading part; 42—transmitting part; 42—second translucent opening; 43—pressing part; 44 - elastic part; 45 - moving body; 46 - guiding body; 50 - LED lamp.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to FIGS. 1 to 5 are exemplary, and are intended to be used to explain the present invention, but should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than An indication or implication that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, is not to be construed as a limitation of the invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

As shown in Figures 2, 3, and 4, the photoelectric switch key provided by the embodiment of the present invention will now be described. The photoelectric switch button includes a casing 10, a circuit board 20, a photosensitive element 30 and a pressing component 40. The casing 10 is provided with a light-shielding cavity 11 and a first light-transmitting opening 111 communicating with the light-shielding cavity 11, and the photosensitive element 30 is located in the light-shielding cavity. 11 and is electrically connected to the circuit board 20, the housing 10 has a light-transmitting area 12 for external light to pass through and toward the photosensitive element 30, the pressing component 40 has a light-shielding portion 41 and a light-transmitting portion 42, and the pressing component 40 moves It is installed on the housing 10 so that the light-shielding portion 41 and the light-transmitting portion 42 can move relative to the first light-transmitting opening 111 . to the photosensitive element 30.

Compared with the prior art, in the photoelectric switch button provided by the embodiment of the present invention, since the photosensitive element 30 is electrically connected with the circuit board 20 to form an electrical path, when the pressing component 40 is not pressed down, the light shielding portion 41 is located in the first position. At a light-transmitting opening 111 , the photosensitive element 30 cannot receive the light from the light-transmitting area 12 , and the electrical path is disconnected; and when the pressing component 40 is pressed down, the light-transmitting portion 42 is located at the first light-transmitting opening 111 , at this time, the photosensitive element 30 can receive the light from the light-transmitting area 12 (that is, the light in the light-transmitting area 12 can be directed to the photosensitive element 30 from all directions through the first light-transmitting opening 111 ), and the electrical path is in a conducting state , so as to realize the function of the button. Then, when the user presses the key, the light-transmitting portion 42 may be located at the first light-transmitting opening 111 , which effectively improves the sensitivity of the key and provides a good user experience. Moreover, since the photoelectric switch button of the embodiment of the present invention can directly make the external light enter the casing 10 through the light-transmitting area 12, there is no need to additionally provide an infrared emission to the tube to provide a light source, so that the structure of the button is simpler and more compact, which is beneficial to The keys are miniaturized and the production cost is lower.

In another embodiment of the present invention, as shown in FIGS. 2 , 3 and 4 , the push assembly 40 includes a push member 43 and an elastic member 44 , the push member 43 is movably installed on the housing 10 , and the elastic member 44 abuts against Connected between the housing 10 and the push member 43 , the light-shielding portion 41 and the light-transmitting portion 42 are provided on the push 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. At this time, the first light-transmitting opening 111 is blocked. The light cannot be directed 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 the electrical path is turned on at this time to realize the button 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. The elastic member 44 can be a spring, a torsion spring or an elastic sheet, etc., which can be provided as required.

In another embodiment of the present invention, as shown in FIGS. 3 , 4 and 5 , the pusher 43 is provided with a movable body 45 , and the movable body 45 is provided with a second light-transmitting opening 42 a to form a light-transmitting portion 42 . The structure on the side of the second light-transmitting opening 42a on 45 forms the light-shielding portion 41 . Specifically, by disposing the second light-transmitting opening 42a on the moving body 45, when the user presses the pusher 43, the second light-transmitting opening 42a on the moving body 45 moves toward the first light-transmitting opening 111, so that when the first light-transmitting opening 42a moves The formation of a cross-layer between the first light-transmitting opening 111 and the second light-transmitting opening 42a is sufficient to form a passage for the light to pass through, so that the light emitted from the light-transmitting area 12 into the housing 10 can be directed to the photosensitive element 30 from all directions. To complete the button function, there is no need to set a single light transmission path; when the user releases the push member 43, the movable body 45 rebounds, so that other parts of the movable body 45 can block the first light transmission opening 111, and its structure Simple, easy to use, and high sensitivity, which is conducive to the development of miniaturization of keys.

In another embodiment of the present invention, as shown in FIGS. 3 , 4 and 5 , a guide body 46 is further provided on the pressing member 43 , a guide sleeve 13 is provided on the housing 10 , and the central axis of the guide body 46 is the same as the The central axis of the guide sleeve 13 is located on the same straight line, one end of the elastic member 44 is sleeved on the guide body 46, the other end of the elastic member 44 is sleeved on the guide sleeve 13, and the guide body 46 is used to be inserted into the guide sleeve. inside the barrel 13. Specifically, the elastic member 44 is preferably a spring, and both ends of the spring are sleeved between the guide body 46 and the guide sleeve 13 , and the guide sleeve 13 is used to restrict the guide body 46 from moving in the extending direction of the guide sleeve 13 (ie, restrict The pressing member 43 moves back and forth along a predetermined direction when being pressed), so as to ensure that the shading portion 41 and the light-transmitting portion 42 move along a predetermined path, so as to accurately control the light emitted to the first light-transmitting opening 111, That is, the key function is accurately realized, and the use effect is good.

In another embodiment of the present invention, as shown in FIGS. 3 , 4 and 5 , the moving body 45 and the guide 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 is in the shape of a strip, the first light-transmitting opening 111 is located at the side of the moving body 45 , and the light-transmitting portion 42 and the light-shielding portion 41 are arranged along the extending direction of the moving body 45 (ie, the guiding body 46 ), 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 can be located at the positions of the first light-transmitting openings 111 to control light entering the first light-transmitting openings 111 .

In another embodiment of the present invention, as shown in FIGS. 2 and 3 , the circuit board 20 is provided with an escape groove 21 for avoiding the moving body 45 . Specifically, by arranging the avoidance groove 21 on the circuit board 20 , the moving body 45 can easily move relative to the first light-transmitting opening 111 to avoid jamming.

In another embodiment of the present invention, as shown in FIGS. 1 , 2 and 3 , the housing 10 includes a light-shielding shell 14 and a light-transmitting shell 15 mounted on the light-shielding shell 14 , and the light-shielding cavity 11 is provided on the light-shielding shell 14 , The light-transmitting shell 15 is transparent to form the light-transmitting area 12 . Specifically, the light-shielding shell 14 is an opaque shell 15, and the light-transmitting shell 15 is a transparent shell. The external light can only be received 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 penetrate the external light into the casing 10, so that the first transparent When the button is pressed, the light opening 111 naturally causes the external light to be directed to the photosensitive element 30, so that the electrical path is in a conductive state, and no additional light source is required, which effectively simplifies the structure of the button and saves the production cost of the button.

In another embodiment of the present invention, as shown in FIGS. 1 , 2 and 3 , the photoelectric switch button further includes an LED light 50 . The LED light 50 is mounted on the circuit board 20 and is electrically connected to the circuit board 20 . The LED light 50 Light is emitted toward the light-transmitting casing 15 . Specifically, by arranging the LED light 50 on the circuit board 20 , the LED light 50 can emit light toward the light-transmitting case 15 when the LED light 50 is turned on, so that the light-transmitting case 15 can collect more intense light to illuminate the photosensitive element 30 to maintain the sensitivity of the photosensitive element 30; and the LED light 50 can be set to various colorful lights as required, so that the light illuminates the light-transmitting shell 15 to form a good decorative effect, giving users a good visual experience .

In another embodiment of the present invention, as shown in FIGS. 3 and 4 , the light-shielding shell 14 is provided with a light-guiding cavity 16 , and the end of the light-guiding cavity 16 facing the light-transmitting shell 15 is provided with a light-guiding opening 17 , and the LED lamp 50 It is located in the light guide cavity 16 and emits light toward the light transmission case 15 through the light guide opening 17 . Specifically, by disposing the light guide cavity 16 on the light shielding case 14, covering the LED lamp 50 in the light guide cavity 16, and then directionally emitting the light of the LED lamp 50 to the light transmitting case 15 through the light guide opening 17, the realization of The light emitted by the LED lamp 50 is effectively controlled, the random scattering of the light of the LED lamp 50 is avoided, and the irradiation effect on the light-transmitting shell 15 is enhanced.

Embodiments of the invention also provide a keyboard, including the above-mentioned photoelectric switch keys.

The keyboard of the embodiment of the present invention uses the above-mentioned photoelectric switch keys, so that the user can easily and sensitively press the keys, giving the user a good use experience; and it is beneficial to the development of the miniaturization of the keyboard of the embodiment of the present invention, and the production cost is also higher. Low.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (10)

1. A photoelectric switch button, characterized in that: it comprises a casing, a circuit board, a photosensitive element and a push assembly, and the casing is provided with a light-shielding cavity and a first light-transmitting opening communicated with the light-shielding cavity, so that the The photosensitive element is located in the light-shielding cavity and is electrically connected to the circuit board, the housing has a light-transmitting area for external light to pass through and is directed to the photosensitive element, and the push component has a light-shielding portion and a transparent portion. a light part, the pressing component is movably installed on the casing so that the light shielding part and the light transmission part can move relative to the first light transmission opening, and the light shielding part is used for blocking the light from radiating to the light. the photosensitive element, and the light-transmitting part is used for light to pass through to be directed to the photosensitive element. 2 . The photoelectric switch key according to claim 1 , wherein the pressing component comprises a pressing member and an elastic member, the pressing member is movably mounted on the casing, and the elastic member abuts against the pressing member. 3 . Between the casing and the push piece, the light shielding portion and the light transmission portion are arranged on the push piece. 3 . The photoelectric switch key according to claim 2 , wherein a moving body is provided on the pressing member, and a second light-transmitting opening is provided on the moving body to form the light-transmitting portion, and the moving body is provided with a moving body. 4 . The structure on the body on the side of the second light-transmitting opening forms the light-shielding portion. 4 . The photoelectric switch key according to claim 3 , wherein a guide body is further provided on the push member, a guide sleeve is provided on the casing, and the central axis of the guide body is connected to the The central axis of the guide sleeve is 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 inserting set in the guide sleeve. 5 . The photoelectric switch key according to claim 4 , wherein the moving body and the guide body extend in the same direction, and the first light-transmitting opening is disposed toward the moving body. 6 . 6 . The photoelectric switch key according to claim 3 , wherein the circuit board is provided with an avoidance groove for avoiding the moving body. 7 . 7 . The photoelectric switch key according to claim 1 , wherein the casing comprises a light-shielding shell and a light-transmitting shell mounted on the light-shielding shell, and the light-shielding cavity is provided in the On the light-shielding shell, the light-transmitting shell is transparent to form the light-transmitting area. 8 . The photoelectric switch key according to claim 7 , wherein the photoelectric switch key further comprises an LED light, the LED light is mounted on the circuit board and is electrically connected with the circuit board, and the The LED lamp emits light toward the light-transmitting shell. 9 . The photoelectric switch key according to claim 8 , wherein the light-shielding shell is provided with a light-guiding cavity, and an end of the light-guiding cavity facing the light-transmitting shell is provided with a light-guiding opening, and the LED The lamp is located in the light-guiding cavity and emits light toward the light-transmitting shell through the light-guiding opening. 10. A keyboard, characterized in that it comprises the photoelectric switch key according to any one of claims 1 to 9.

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