Luminous key structure

Abstract

The utility model relates to a luminous key structure, which comprises a circuit substrate and at least one group of key assembly arranged on the circuit substrate, the key assembly comprises a key body, a luminous element and a touch switch, the luminous element and the touch switch are electrically connected on the circuit substrate, the key body can be vertically and movably arranged above the circuit substrate, and the luminous element is arranged above the circuit substrate. The key body is provided with a light-emitting surface, the light-emitting element is located below the central area of the light-emitting surface, the touch switch is vertically contacted with the key body and is arranged below the key body, and the touch switch is eccentrically arranged relative to the light-emitting surface area of the key body. According to the light-emitting key structure, based on the change of the relative positions of the key body, the light-emitting element and the touch switch, a light guide piece does not need to be additionally arranged, and the light-emitting uniformity of the key structure can be guaranteed only through one light-emitting element.

Description

TECHNICAL FIELD

[0001] The utility model relates to a light-emitting button structure. BACKGROUND

[0002] The existing various electric device products are all provided with button structures, in order to improve the appearance, and also can more clearly display the text / character information on the button in the place where the light is insufficient, the light-emitting button product appears, the light-emitting button usually includes shell, switch, key body, light-emitting element, the key body is embedded in the shell, the light of light-emitting element can pass through the light-transmitting area on the key body. In addition, in order to enhance the pressing feeling, elastic member will also be provided.

[0003] Such as the authorized announcement no. CN218351332U (application no. 202221250077.0) of Chinese utility model patent "button structure and display device", wherein the button structure disclosed includes button assembly, elastic connecting piece, light-emitting piece, button assembly includes button key cap and button support. The elastic connecting piece in the button structure connects the shell and button assembly, the button key cap is installed on the button support, and the button support is connected with the shell through the elastic connecting piece. The connection mode of the button key cap and the button support can be screwing, welding and clamping. The connection mode of the elastic connecting piece and the button support can also be screwing, welding and clamping. Such button assembly structure is complex, and the assembly process of the button assembly is relatively complex. In addition, the button key cap includes button circuit board, first pressing switch, button and key body. The button circuit board is installed on the side away from the second mounting portion of the first mounting portion; the first pressing switch is installed on the side of the button circuit board away from the first mounting portion; the button is installed on the side of the first pressing switch away from the button circuit board and abuts against the first pressing switch; the key body cover is arranged on the button and corresponds to the key opening in position. That is, the first pressing switch is installed below the key body cover, so that the light-emitting piece can be arranged only on the periphery of the first pressing switch. In order to improve the uniformity of light emission, at least two light-emitting pieces are usually arranged, and a light guide portion for uniform light is additionally arranged. Thus, the structural parts for realizing light emission are relatively more. UTILITY MODEL CONTENTS

[0004] The first technical problem to be solved by the utility model is to provide a light-emitting button structure for the above-mentioned prior art, which does not need to additionally arrange a light guide piece and only needs one light-emitting element to ensure the uniformity of light emission of the button structure.

[0005] The second technical problem to be solved by the utility model is to provide a light-emitting button structure with simple structure and easy assembly, which can realize the elastic pressing feeling of the key body.

[0006] The utility model discloses a technical scheme that the first technical problem is solved as follows: a light-emitting button structure, including circuit board and at least one button assembly group that sets on the circuit board, the button assembly includes key body, light-emitting element and light touch switch, light-emitting element, light touch switch are connected on the circuit board, the key body can be vertically mobile and set above the circuit board, the key body has the light exit surface, the light-emitting element is located below the center area of light exit surface, and light touch switch is vertically contacted and set below the key body, and light touch switch is eccentric and set relative to the light exit surface area of key body.

[0007] Preferably, the key body includes a key cap having a light exit surface and a pressing plate integrally extending outward from the bottom of the key cap, and the pressing plate vertically acts on the light touch switch.

[0008] In order to ensure the setting height of the key body, a protrusion is arranged on the bottom surface of the pressing plate, and the protrusion abuts against the light touch switch.

[0009] Preferably, the key cap is a cap structure having a downwardly open cavity, and the top surface of the key cap is the light exit surface.

[0010] The utility model discloses a technical scheme that the second technical problem is solved as follows: the bottom of the key cap is integrally provided with an elastic member in the position opposite to the pressing plate, and the end of the elastic member abuts against the substrate.

[0011] The elastic member horizontally extends from the bottom of the key cap and is bent downwardly.

[0012] In order to uniformly and gently distribute light on the surface of the key cap, the key body is a structural member made of POM plastic.

[0013] Preferably, the utility model also includes a shell, the shell covers the circuit board and the button assembly, and the shell is provided with an opening for the key cap to pass through.

[0014] In order to better limit the vertical movement between the shell and the key body, avoid the key body rotating and shifting in the horizontal direction, and effectively press the light touch switch, a limiting assembly is arranged on the shell and the key body to limit the relative horizontal movement of the shell and the key body.

[0015] The limiting assembly includes a limiting member and a positioning member.

[0016] A plurality of limiting members are arranged on the inner wall of the shell along the outer periphery of the opening, and a limiting groove is formed between adjacent limiting members.

[0017] The key body is provided with the positioning member arranged in the limiting groove in the vertical direction.

[0018] Compared with the prior art, the advantages of this utility model are as follows: The light-emitting button structure of this utility model, based on the change of the relative positions of the button body, the light-emitting element, and the tactile switch, not only ensures the moving contact relationship between the button body and the tactile switch, but also reserves a setting position for the light-emitting element, so that the light-emitting element can face the light-emitting surface of the button body. The light-emitting element corresponds to the light-emitting path axis of the button body and is not blocked. Thus, without the need to set up a light guide, only one light-emitting element can ensure the uniformity of light emission, saving materials and simplifying the structure.

[0019] Based on this, the elastic component is also integrally molded on the key body, eliminating the need for a separate elastic component, which simplifies its structure and assembly, and can effectively save materials and assembly costs. Attached Figure Description

[0020] Figure 1 This is a perspective view of the light-emitting button structure in an embodiment of this utility model.

[0021] Figure 2 This is an exploded view of the structure of the light-emitting button in an embodiment of this utility model.

[0022] Figure 3 for Figure 2 A diagram taken from a low angle.

[0023] Figure 4 This is a perspective view of the key body in an embodiment of this utility model. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] like Figures 1 to 4 As shown, the light-emitting button structure in this embodiment includes a circuit board 1 and at least one set of button assemblies 100 disposed on the circuit board 1. If necessary, it also includes a housing 5, which covers the circuit board 1 and the button assemblies 100.

[0026] The button assembly 100 includes a button body 2, a light-emitting element 3, and a tactile switch 4. The light-emitting element 3 and the tactile switch 4 are electrically connected to a circuit board 1. The circuit board 1 can control the opening and closing of the light-emitting element 3, and can also receive the trigger signal from the tactile switch 4. The light-emitting element 3 can be any existing light-emitting device, such as an LED or light-emitting diode. The tactile switch 4 can be any trigger switch applicable to the button structure.

[0027] The key body 2 is vertically movable above the circuit board 1. When the outer shell 5 is provided, in order to facilitate the user to press the key body 2, the outer shell 5 is provided with an opening 51 for the key cap 21 to pass through.

[0028] The key body 2 has a light emitting surface 211, and the light emitting element 3 is located below the central region of the light emitting surface 211, that is, the axis of the light emitting element 3 is on the same straight line as the axis of the light emitting surface 211, and the light emitted by the light emitting element 3 can directly irradiate the light emitting surface 211, thereby ensuring the light emitting brightness and uniformity. Since the light emitting element 3 is not eccentrically arranged relative to the light emitting surface 211, it is not necessary to arrange multiple light emitting elements 3 or light guide members to solve the problem of light emitting uniformity of the light emitting surface 211.

[0029] The tactile switch 4 is arranged below the key body 2 in vertical contact, and the tactile switch 4 is arranged eccentrically relative to the light emitting surface 211 region of the key body 2. Based on the eccentric arrangement position relationship of the tactile switch 4 relative to the light emitting surface 211 region of the key body 2, the contact relationship between the key body 2 and the tactile switch 4 can be maintained, the key body 2 can trigger the tactile switch 4 without affecting the key body 2, and the light emitting element 3 can also be left in a position opposite the light emitting surface 211 to ensure the light emitting effect. In use, the key body 2 can press down the tactile switch 4 based on the user's pressing, thereby triggering the tactile switch 4. The reset of the tactile switch 4 drives the key body 2 to also move upward and reset.

[0030] In this embodiment, the key body 2 specifically includes a key cap 21 having a light emitting surface 211 and a pressing plate 22 integrally extending outward from the bottom of the key cap 21, and the pressing plate 22 acts on the tactile switch 4 in the vertical direction. The key cap 21 is a cap structure having a downwardly open cavity, and the top surface of the key cap 21 is the light emitting surface 211.

[0031] And in order to ensure the setting height of the key body 2, a protrusion 23 is arranged on the bottom surface of the pressing plate 22, and the protrusion 23 abuts against the tactile switch 4. The arrangement of the protrusion 23 leaves higher space below the key body 2, which is convenient for the arrangement of the light emitting element 3 and avoids the contact between the light emitting element 3 and the key body 2 to damage the light emitting element 3.

[0032] When the shell 5 is arranged, in order to better limit the vertical movement between the shell 5 and the key body 2, and avoid the key body 2 from rotating and shifting in the horizontal direction to cause the key body 2 to be unable to effectively press the tactile switch 4, a limiting assembly for limiting the relative horizontal movement between the shell 5 and the key body 2 is arranged on the shell 5 and the key body 2. Specifically, the limiting assembly includes a limiting piece 61 and a positioning piece 62; a plurality of limiting pieces 61 are arranged on the inner wall of the shell 5 along the outer periphery of the opening 51, and a limiting groove 611 is formed between adjacent limiting pieces 61; and the positioning piece 62 arranged on the key body 2 is arranged in the limiting groove 611 in the vertical direction. When the key body 2 moves up and down based on pressing and resetting, the positioning piece 62 on the key body 2 can enter and exit the limiting groove 611 formed by the limiting piece 61, so that the position of the key body 2 in the horizontal direction remains stable, and the key body 2 can interact with the tactile switch 4.

[0033] In addition, in order to ensure the pressing feeling, the bottom of the key cap 21 is integrally provided with an elastic member 24 at a position opposite to the pressing plate 22, the end of the elastic member 24 abuts against the circuit board, so that the contact between the tactile switch 4 and the protrusion 23 on the pressing plate 22 forms a support on one side of the key cap 21, and the elastic member 24 forms a support on the other side of the key cap 21, so as to ensure the stability of the up-down movement direction of the key cap 21. The elastic member 24 can adopt various existing elastic structures as required, and in the embodiment, the elastic member 24 mainly realizes the elastic deformation in the up-down direction through the deformation of the material itself. Specifically, the elastic member 24 extends horizontally from the bottom of the key cap 21 and extends downwardly and is bent, the elastic member 24 is a linear bending structure, the elastic member 24 as a whole is in a U shape, the two free ends of the elastic member 24 are symmetrically and integrally connected to the opposite sides of the pressing plate 22, and the middle part of the elastic member 24 is bent downwardly and supported on the circuit board 1. The shape of the elastic member 24 can ensure the balance of the elastic member 24 acting on the circuit board 1, so that the rebound force received by the key cap 21 is more uniform when the key cap 21 moves up and down. Moreover, the pressing plate 22, the protrusion 23 and the elastic member 24 are all independent of the circuit board 1 and have no connection relationship with the circuit board 1, so that the up-down movement of the whole key body 2 is more independent, the horizontal posture in the up-down movement process is more stable, the deformation problem existing for a long time when there is a connection relationship with the circuit board 1 is avoided, the triggering failure problem of the tactile switch 4 caused by the deformation is avoided, and the light-emitting key structure can ensure the long-term effective triggering of the key body 2 to the tactile switch 4.

[0034] The key body 2 in the embodiment is a structural member made of POM plastic, which not only enables the elastic member 24 to be slightly deformed and have elasticity, but also uniformly and softly distributes the light irradiated by the light-emitting element 3 on the surface of the key cap 21.

[0035] The light-emitting key structure in the embodiment changes the relative positions of the key body 2, the light-emitting element 3 and the tactile switch 4, ensures the movement and contact relationship between the key body 2 and the tactile switch 4, and reserves a setting position for the light-emitting element 3, so that the light-emitting element 3 can face the light-emitting surface 211 of the key body 2, the light-emitting element 3 corresponds to the axis of the light-emitting route and is not blocked, so that the uniformity of light emission can be ensured by only arranging one light-emitting element 3 without arranging a light guide member, material is saved and the structure is simplified.

[0036] On this basis, the elastic member 24 is also integrally formed on the key body 2, and the elastic member 24 does not need to be independently arranged, so that the structure and assembly are simplified, material and assembly cost can be effectively saved.

[0037] In the description and claims of the present application, terms are used to generally identify the conceptual aspects of the embodiments. The use of these terms is intended to be illustrative and not restrictive. There can be many different examples of the application in which the terms could be used. Therefore, these terms are described in the detailed description of the application to allow embodiments of the application to be better understood. The terms used herein are not intended to limit the application, unless specifically so indicated.

Claims

1. A light-emitting key structure, comprising a circuit substrate (1), and at least one set of key assemblies (100) arranged on the circuit substrate (1), the key assembly (100) comprising a key body (2), a light-emitting element (3) and a tactile switch (4), the light-emitting element (3), the tactile switch (4) being electrically connected on the circuit substrate (1), characterized in that: The key body (2) is movably arranged above the circuit substrate (1), the key body (2) has a light emitting surface (211), the light emitting element (3) is arranged below the central area of the light emitting surface (211), the light touch switch (4) is arranged below the key body (2) and vertically contacts the key body (2), and the light touch switch (4) is arranged eccentrically relative to the light emitting surface (211) of the key body (2).

2. The lighted key structure of claim 1, wherein: The key body (2) comprises a key cap (21) having a light emitting surface (211) and a pressing plate (22) integrally extending outward from the bottom of the key cap (21), and the pressing plate (22) vertically acts on the light touch switch (4).

3. The lighted key structure of claim 2, wherein: The bottom surface of the pressing plate (22) is provided with a protrusion (23) which abuts against the light touch switch (4).

4. The lighted key structure of claim 2, wherein: The key cap (21) is a cap structure having a downwardly open cavity, and the top surface of the key cap (21) is the light emitting surface (211).

5. The lighted key structure of any one of claims 2 to 4, wherein: The bottom of the key cap (21) is integrally provided with an elastic member (24) in the position opposite to the pressing plate (22), and the end of the elastic member (24) abuts against the substrate.

6. The lighted key structure of claim 5, wherein: The elastic member (24) extends horizontally from the bottom of the key cap (21) and is bent downwardly.

7. The lighted key structure of any one of claims 1 to 4, wherein: The key body (2) is a structural member made of POM plastic.

8. The lighted key structure of any one of claims 1 to 4, wherein: Further comprising a shell (5) covering the circuit substrate (1) and the key assembly (100), and the shell (5) is provided with an opening (51) for the key cap (21) to pass through.

9. The lighted key structure of claim 8, wherein: The shell (5) and the key body (2) are provided with a limiting assembly matched thereon to limit the relative horizontal movement of the shell (5) and the key body (2).

10. The lighted key structure of claim 9, wherein: The limiting assembly comprises a limiting member (61) and a positioning member (62). The inner wall of the shell (5) is provided with a plurality of limiting members (61) along the outer periphery of the opening (51), and a limiting groove (611) is formed between adjacent limiting members (61). The key body (2) is provided with the positioning member (62) vertically matched and arranged in the limiting groove (611).

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