Photoelectric switch key and keyboard

Abstract

The application belongs to the technical field of keyboard, and particularly relates to an optical switch key and a keyboard. The optical switch key comprises a shell, a circuit board, a photosensitive element and a pressing assembly. The shell is provided with a light shielding cavity and a first light transmission opening communicated with the light shielding cavity. The photosensitive element is located in the light shielding cavity and is electrically connected with the circuit board. The shell has a light transmission area for external light to pass through and be shot to the photosensitive element. The pressing assembly has a light shielding part and a light transmission part. The pressing assembly is movably installed on the shell so that the light shielding part and the light transmission part can move relative to the first light transmission opening. The light shielding part is used for blocking the light from being shot to the photosensitive element. The light transmission part is used for allowing the light to pass through to be shot to the photosensitive element. In use, the light of the light transmission area can be shot to the photosensitive element from each direction through the first light transmission opening, and the function of the key is realized. An infrared emission pair tube is not needed to be additionally arranged to provide a light source, so that the structure of the key is simple and compact, the miniaturization development of the key is facilitated, and the manufacturing cost is lower.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of keyboard, in particular to a photoelectric switch key and keyboard. BACKGROUND

[0002] The keyboard keys are generally divided into mechanical contact type and photoelectric switch type, wherein the photoelectric switch type key utilizes optical principle and photoelectric coupling technology, the light emitting element and the light receiving element are oppositely arranged to form the light path by light transmission, the light blocking piece cuts off and conducts the light path to change the circuit impedance to realize the circuit switch. The existing photoelectric switch key needs to emit light by the emitting element, and the receiving element and the emitting element cannot have components other than the light blocking piece to avoid affecting the conduction of the light between the receiving element and the emitting element, so as to cause the key structure to be relatively complex, the volume to be large, and not suitable for miniaturization development. SUMMARY

[0003] The present application aims to provide a photoelectric switch key and keyboard, which aims to solve the technical problem of the photoelectric switch key structure in the prior art being complex and not suitable for miniaturization development.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is: a photoelectric switch key, comprising a shell, a circuit board, a photosensitive element and a pressing assembly, the shell is provided with a light shielding cavity and a first light transmission opening communicating with the light shielding cavity, the photosensitive element is located in the light shielding cavity and is electrically connected with the circuit board, the shell has a light transmission area for external light to pass through and shoot to the photosensitive element, the pressing assembly has a light shielding part and a light transmission part, the pressing assembly is movably installed on the shell so that the light shielding part and the light transmission part can move relative to the first light transmission opening, the light shielding part is used for blocking the light from shooting to the photosensitive element, and the light transmission part is used for allowing the light to pass through to shoot to the photosensitive element.

[0005] Optionally, the pressing assembly comprises a pressing piece and an elastic piece, the pressing piece is movably installed on the shell, the elastic piece abuts between the shell and the pressing piece, and the light shielding part and the light transmission part are arranged on the pressing piece.

[0006] Optionally, the pressing piece is provided with a moving body, the moving body is provided with a second light transmission opening to form the light transmission part, and the structure of the moving body on the side of the second light transmission opening forms the light shielding part.

[0007] Optionally, the pressing member is further provided with a guide body, the shell is provided with a guide sleeve, the central axis of the guide body is in line with the central axis of the guide sleeve, one end of the elastic member is sleeved on the guide body, and the other end of the elastic member is sleeved on the guide sleeve, and the guide body is inserted into the guide sleeve.

[0008] Optionally, the moving body extends in the same direction as the guide body, and the first light-transmitting opening is arranged towards the moving body.

[0009] Optionally, the circuit board is provided with an avoiding groove for avoiding the moving body.

[0010] Optionally, the shell comprises a light-shielding shell and a light-transmitting shell mounted on the light-shielding shell, the light-shielding cavity is arranged on the light-shielding shell, and the light-transmitting shell is transparent to form the light-transmitting area.

[0011] Optionally, 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 emits light towards the light-transmitting shell.

[0012] Optionally, the light-shielding shell is provided with a light guide cavity, one end of the light guide cavity towards the light-transmitting shell is provided with a light guide opening, and the LED lamp is located in the light guide cavity and emits light towards the light-transmitting shell through the light guide opening.

[0013] The photoelectric switch key has the following beneficial effects: compared with the prior art, the photoelectric switch key of the present application is electrically connected with the circuit board to form an electrical path, so that when the pressing assembly is not pressed, the light-shielding part is located at the first light-transmitting opening, the light-sensitive element cannot receive light from the light-transmitting area at this time, and the electrical path is disconnected; when the pressing assembly is pressed, the light-transmitting part is located at the first light-transmitting opening, the light-sensitive element can receive light from the light-transmitting area at this time (i.e. the light from the light-transmitting area can be emitted to the light-sensitive element from various directions through the first light-transmitting opening), and the electrical path is in a conducting state, thereby realizing the function of the key. When the user presses the key, the light-transmitting part is located at the first light-transmitting opening, thereby effectively improving the sensitivity of the key and providing a good user experience. Moreover, the photoelectric switch key of the present application can directly make the external light enter the shell through the light-transmitting area, so that an infrared emission pair is not needed to provide a light source, the structure of the key is simpler and more compact, the development of the key is facilitated, and the manufacturing cost is lower.

[0014] Another technical scheme provided by the present application is a keyboard comprising the photoelectric switch key.

[0015] The keyboard of the embodiment of the present application can make the user press the key easily and sensitively, and provide the user with good use experience, and is beneficial to the miniaturization development of the keyboard of the embodiment of the present application, and the manufacturing cost is also lower. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0017] Figure 1 The structural schematic diagram of the photoelectric switch key provided by the embodiment of the present application is shown in the figure.

[0018] Figure 2 The exploded structural schematic diagram of the photoelectric switch key is shown in the figure. Figure 1

[0019] The sectional structural schematic diagram of the photoelectric switch key in the unpressed state is shown in the figure. Figure 3 Figure 1 The sectional structural schematic diagram of the photoelectric switch key in the pressed state is shown in the figure.

[0020] Figure 4 Figure 1 The structural schematic diagram of the pressing component of the photoelectric switch key is shown in the figure.

[0021] Figure 5 The structural schematic diagram of the pressing component of the photoelectric switch key is shown in the figure. Figure 2 In the figure, various reference signs are as follows:

[0022] 10 - shell; 11 - light shielding cavity; 12 - light transmission area; 13 - guide sleeve; 14 - light shielding shell; 15 - light transmission shell; 16 - light guide cavity; 17 - light guide opening; 111 - first light transmission opening; 20 - circuit board; 21 - avoiding groove; 30 - photosensitive element; 40 - pressing assembly; 41 - light shielding part; 42 - light transmission part; 42 - second light transmission opening; 43 - pressing component; 44 - elastic component; 45 - moving body; 46 - guide body; 50 - LED lamp.

[0023] DETAILED DESCRIPTION

[0024] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. Figures 1 to 5 ​​​​

[0025] In the description of the present application, it is to be understood by the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0026] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0027] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] As Figure 2 , 3 , 4, the photoelectric switch key provided by the embodiment of the present application will be described. The photoelectric switch key comprises a shell 10, a circuit board 20, a photosensitive element 30 and a pressing assembly 40, the shell 10 is provided with a light shielding cavity 11 and a first light transmission opening 111 communicating with the light shielding cavity 11, the photosensitive element 30 is located in the light shielding cavity 11 and is electrically connected with the circuit board 20, the shell 10 has a light transmission area 12 for external light to pass through and shoot to the photosensitive element 30, the pressing assembly 40 has a light shielding part 41 and a light transmission part 42, the pressing assembly 40 is movably mounted on the shell 10 so that the light shielding part 41 and the light transmission part 42 can move relative to the first light transmission opening 111, the light shielding part 41 is used for blocking the light to shoot to the photosensitive element 30, and the light transmission part 42 is used for allowing the light to pass through to shoot to the photosensitive element 30.

[0029] Compared with the prior art, the photoelectric switch key provided by the embodiment of the present application has the advantages that, since the photosensitive element 30 is electrically connected with the circuit board 20 to form an electrical path, when the pressing assembly 40 is not pressed, the light shielding part 41 is located at the first light transmission opening 111, at this time, the photosensitive element 30 cannot receive the light from the light transmission area 12, and the electrical path is disconnected; when the pressing assembly 40 is pressed, the light transmission part 42 is located at the first light transmission opening 111, at this time, the photosensitive element 30 can receive the light from the light transmission area 12 (i.e. the light from the light transmission area 12 can be transmitted to the photosensitive element 30 from various directions through the first light transmission opening 111), and the electrical path is in a conducting state, thereby realizing the function of the key. Therefore, when the user presses the key, the light transmission part 42 is located at the first light transmission opening 111, and the sensitivity of the key is effectively improved, and the user experience is good. Moreover, since the photoelectric switch key of the embodiment of the present application can directly make the light from the outside enter the shell 10 through the light transmission area 12, it is not necessary to additionally set an infrared emission pair tube to provide a light source, the structure of the key is more simple and compact, the miniaturization development of the key is facilitated, and the manufacturing cost is lower.

[0030] In another embodiment of the present application, as shown in Figure 2 、 3 , the pressing assembly 40 includes a pressing piece 43 and an elastic piece 44, the pressing piece 43 is movably installed on the shell 10, the elastic piece 44 abuts between the shell 10 and the pressing piece 43, and the light shielding part 41 and the light transmission part 42 are arranged on the pressing piece 43. Specifically, when the pressing piece 43 is not pressed, the pressing piece 43 is driven by the elastic force of the elastic piece 44 to move the light shielding part 41 to the position of the first light transmission opening 111, at this time, the first light transmission opening 111 is shielded, and the light cannot be transmitted to the photosensitive element 30; then, when the pressing piece 43 is pressed, the spring is compressed, at this time, the pressing piece 43 moves along the pressing direction, the light transmission part 42 moves towards the first light transmission opening 111, until the light transmission part 42 moves to the first light transmission opening 111, so that the light from the outside is transmitted to the photosensitive element 30 through the first light transmission opening 111, at this time, the electrical path is in a conducting state, thereby realizing the function of the key. When the user releases the pressing piece 43, the elastic piece 44 drives the light shielding part 41 to move back to shield the first light transmission opening 111, so that the electrical path is disconnected. The elastic piece 44 can be a spring, a torsional spring or an elastic sheet, and is arranged as required.

[0031] In another embodiment of the present application, as shown in Figure 3 、 4As shown in FIG. 5, the pressing member 43 is provided with a moving body 45, the moving body 45 is provided with the second light-transmitting opening 42a to form the light-transmitting part 42, and the structure of the moving body 45 at the side of the second light-transmitting opening 42a forms the light-blocking part 41. Specifically, by arranging 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 when the first light-transmitting opening 111 and the second light-transmitting opening 42a form an intersecting and stacking path, a light transmission path is formed, so that the light emitted from the light-transmitting area 12 towards the shell 10 can be emitted from all directions to the photosensitive element 30, and the key function is completed, and a single light transmission path does not need to be arranged; when the user releases the pressing member 43, the moving body 45 rebounds, so that other parts of the moving body 45 block the first light-transmitting opening 111, which has the advantages of simple structure, convenient use, high sensitivity, and is beneficial to the miniaturization development of the key.

[0032] In another embodiment of the present application, as shown in Figure 3 、 4 As shown in FIG. 5, the pressing member 43 is provided with a moving body 45, the moving body 45 is provided with the second light-transmitting opening 42a to form the light-transmitting part 42, and the structure of the moving body 45 at the side of the second light-transmitting opening 42a forms the light-blocking part 41. Specifically, by arranging 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 when the first light-transmitting opening 111 and the second light-transmitting opening 42a form an intersecting and stacking path, a light transmission path is formed, so that the light emitted from the light-transmitting area 12 towards the shell 10 can be emitted from all directions to the photosensitive element 30, and the key function is completed, and a single light transmission path does not need to be arranged; when the user releases the pressing member 43, the moving body 45 rebounds, so that other parts of the moving body 45 block the first light-transmitting opening 111, which has the advantages of simple structure, convenient use, high sensitivity, and is beneficial to the miniaturization development of the key.

[0033] In another embodiment of the present application, as shown in Figure 3 、 4 As shown in FIG. 5, the pressing member 43 is provided with a moving body 45, the moving body 45 is provided with the second light-transmitting opening 42a to form the light-transmitting part 42, and the structure of the moving body 45 at the side of the second light-transmitting opening 42a forms the light-blocking part 41. Specifically, by arranging 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 when the first light-transmitting opening 111 and the second light-transmitting opening 42a form an intersecting and stacking path, a light transmission path is formed, so that the light emitted from the light-transmitting area 12 towards the shell 10 can be emitted from all directions to the photosensitive element 30, and the key function is completed, and a single light transmission path does not need to be arranged; when the user releases the pressing member 43, the moving body 45 rebounds, so that other parts of the moving body 45 block the first light-transmitting opening 111, which has the advantages of simple structure, convenient use, high sensitivity, and is beneficial to the miniaturization development of the key.

[0034] In another embodiment of the present application, as shown in Figure 2 、 3As shown, the circuit board 20 is provided with an avoiding 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 conveniently move relative to the first light-transmitting opening 111, and the jamming is avoided.

[0035] In another embodiment of the present application, as shown in Figure 1 、 2 As shown in 3, the shell 10 comprises a light-shielding shell 14 and a light-transmitting shell 15 mounted on the light-shielding shell 14, the light-shielding cavity 11 is arranged 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 non-light-transmitting shell 15, and the light-transmitting shell 15 is a transparent shell. By arranging the light-shielding cavity 11 on the light-shielding shell 14, 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 shell 10, so that the first light-transmitting opening 111 naturally causes the external light to be incident on the photosensitive element 30 when the key is pressed, and the electrical path is in a conductive state, without the need for an additional light source, effectively simplifying the structure of the key and saving the manufacturing cost of the key.

[0036] In another embodiment of the present application, as shown in Figure 1 、 2 As shown in 3, the photoelectric switch key further comprises an LED lamp 50 mounted on the circuit board 20 and electrically connected with the circuit board 20, and the LED lamp 50 emits light towards the light-transmitting shell 15. Specifically, by arranging the LED lamp 50 on the circuit board 20, the LED lamp 50 can emit light towards the light-transmitting shell 15 in an open state, so that stronger light can be collected on the light-transmitting shell 15 and irradiated on the photosensitive element 30, to maintain the sensitivity of the photosensitive element 30. In addition, the LED lamp 50 can be arranged as various types of colorful light according to the needs, so that the light irradiated on the light-transmitting shell 15 forms a good decorative effect, providing a good visual experience for the user.

[0037] In another embodiment of the present application, as shown in Figure 3 、 4 As shown in 3, the light-shielding shell 14 is provided with a light guide cavity 16, one end of the light guide cavity 16 towards the light-transmitting shell 15 is provided with a light guide opening 17, and the LED lamp 50 is located in the light guide cavity 16 and emits light towards the light-transmitting shell 15 through the light guide opening 17. Specifically, by arranging the light guide cavity 16 on the light-shielding shell 14, the LED lamp 50 is covered in the light guide cavity 16, and then the light emitted by the LED lamp 50 is directed to the light-transmitting shell 15 through the light guide opening 17, so that the light emitted by the LED lamp 50 is effectively controlled, the irregular scattering of the light emitted by the LED lamp 50 is avoided, and the irradiation effect on the light-transmitting shell 15 is enhanced.

[0038] The application also provides a keyboard comprising the photoelectric switch key.

[0039] The keyboard of the application can make the user press the key easily and sensitively, and provide a good experience for the user. The keyboard of the application is small in size and low in cost.

[0040] The above merely provides the preferred embodiments of the application, but not for limiting the application. Any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A keyboard, characterized by: The photoelectric switch key comprises a shell, a circuit board, a photosensitive element and a pressing assembly. The shell is provided with a light shielding cavity and a first light transmitting opening communicating with the light shielding cavity. The photosensitive element is located in the light shielding cavity and is electrically connected with the circuit board. The shell has a light transmitting area for external light to pass through and be projected to the photosensitive element. The pressing assembly has a light shielding part and a light transmitting part. The pressing assembly is movably mounted on the shell so that the light shielding part and the light transmitting part can move relative to the first light transmitting opening. The light shielding part is used for blocking light from being projected to the photosensitive element. The light transmitting part is used for allowing light to pass through and be projected to the photosensitive element. When the pressing assembly is not pressed, the light shielding part is located at the first light transmitting opening, and the electrical connection between the photosensitive element and the circuit board is disconnected. When the pressing assembly is pressed, the light transmitting part is located at the first light transmitting opening, and the electrical connection between the photosensitive element and the circuit board is connected. 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. The light shielding part and the light transmitting part are arranged on the pressing piece. A moving body is arranged on the pressing piece. The moving body is in the form of a strip. A second light transmitting opening is arranged on the moving body to form the light transmitting part. Structures on the moving body beside the second light transmitting opening form the light shielding part. A guide body is arranged on the pressing piece. A guide sleeve is arranged on the shell. The central axis of the guide body is arranged on the same line as the central axis of the guide sleeve. One end of the elastic piece is sleeved on the guide body, and the other end of the elastic piece is sleeved on the guide sleeve. The guide body is used for being inserted into the guide sleeve. The moving body and the guide body extend in the same direction. The first light transmitting opening is arranged towards the moving body. An avoiding groove is arranged on the circuit board to avoid the moving body. The shell comprises a light shielding shell and a light transmitting shell mounted on the light shielding shell. The light shielding cavity is arranged on the light shielding shell. The light transmitting shell is transparent to form the light transmitting area.

2. The keyboard of claim 1, wherein: The photoelectric switch key further comprises an LED lamp mounted on the circuit board and electrically connected with the circuit board. The LED lamp projects light towards the light transmitting shell.

3. The keyboard of claim 2, wherein: A light guiding cavity is arranged on the light shielding shell. One end of the light guiding cavity towards the light transmitting shell is provided with a light guiding opening. The LED lamp is located in the light guiding cavity and projects light towards the light transmitting shell through the light guiding opening.

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