Light-emitting key assembly and keyboard

Abstract

The utility model discloses a kind of light-emitting key assembly and keyboard, including light guide shell and circuit board, circuit board is arranged below light guide shell, the upper surface of circuit board towards light guide shell is provided with light-emitting element, the lower surface of circuit board towards bottom plate is provided with electric connection terminal, and conductive structure is equipped on bottom plate;Electric connection terminal is electrically connected with the conductive structure on bottom plate by a electric connector.The light-emitting element is integrated on independent circuit board, and the circuit board and light guide shell are previously fixed into a complete light-emitting module;The complex process of welding light-emitting element one by one on bottom plate is saved, and production efficiency is greatly improved;Light-emitting element is directly embedded into light guide shell by avoiding structure on light guide shell, and light guide efficiency is high, and loss is small.Uniform illumination in all directions can be realized, and the local dark area problem of traditional structure is effectively eliminated.

Description

Technical Field

[0001] This utility model relates to the field of buttons, specifically to an illuminated button assembly and a keyboard. Background Technology

[0002] Traditionally, backlit keys on keyboards are implemented by directly mounting LED light-emitting elements (light-emitting diodes) onto the overall PCB (printed circuit board) of the device. The light guide structure of the key (such as a light guide post or light guide cap) is installed as a separate component on the key switch, and its position needs to be precisely aligned with the LED light-emitting element below in order to guide the light.

[0003] This traditional structure has many drawbacks: First, the manufacturing process is complex and inefficient, requiring the soldering of light-emitting elements onto the entire PCB for each button. Second, the alignment accuracy between the light guide and the light-emitting element is high, and assembly deviations can easily lead to uneven brightness or dark areas. Finally, after the light is emitted from the point source, it needs to travel a long path, resulting in significant light loss and affecting the brightness of the emitted light. Utility Model Content

[0004] To address the aforementioned problems, this invention aims to provide a light-emitting key assembly that pre-integrates the light-emitting element and the light-guiding housing into a module. This module can be directly connected to the base plate, simplifying the assembly process and achieving excellent light efficiency. Another objective of this invention is to provide a keyboard incorporating this light-emitting key.

[0005] To achieve this technical objective, the present invention provides a light-emitting button, comprising a button shaft, a key base, a base plate, an elastic reset component, and a light-guiding shell. The button shaft is movably disposed within the key base, and the elastic reset component provides a reset force for the button shaft. The button also includes a circuit board. The upper surface of the circuit board is provided with light-emitting elements facing the light-guiding shell, and the lower surface of the circuit board is provided with electrical connection terminals. The base plate is provided with a conductive structure. The electrical connection terminals are electrically connected to the conductive structure on the base plate via an electrical connector.

[0006] Preferably, the bottom of the light guide housing is provided with a clearance structure corresponding to the position of the light-emitting element.

[0007] Preferably, the clearance structure is a recess formed at the bottom of the light guide shell.

[0008] Preferably, the number of the void-avoiding structure and the number of the light-emitting elements are at least four, and they correspond one-to-one.

[0009] Preferably, the outer contour of the circuit board is adapted to the bottom outer contour of the light guide housing.

[0010] Preferably, the circuit board is fixed to the bottom of the light guide housing by means of bonding, welding or snap-fit ​​connection.

[0011] Preferably, one end of the electrical connector is in contact with the electrical connection terminal, and the other end is in contact with the conductive socket on the base plate.

[0012] Preferably, the device also includes an upper cover, with the light guide shell fitted over the upper cover, and the key shaft located between the upper cover and the key base.

[0013] A keyboard including illuminated keys as described in any of the above.

[0014] The beneficial effects of this invention are as follows: The light-emitting elements are integrated onto an independent circuit board, and this circuit board is pre-fixed to the light guide shell to form a complete light-emitting module. When assembling the keyboard, this module only needs to be connected to the main base plate via electrical connectors, eliminating the complex process of soldering each light-emitting element onto the base plate individually, greatly improving production efficiency. The light-emitting elements are directly embedded into the light guide shell through the air-proof structure on the light guide shell, resulting in high light guiding efficiency and minimal light loss. The arrangement of multiple light-emitting elements, combined with the light guide shell, enables uniform illumination from all directions, effectively eliminating the problem of localized dark areas in traditional structures. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is a schematic diagram of the circuit board structure in this utility model;

[0018] Figure 4 This is a diagram showing the electrical connections in this utility model;

[0019] Figure 5 This is a schematic diagram of the bottom structure of the light guide shell of this utility model.

[0020] In the diagram: 1-Light guide shell; 11-Air-proof structure; 2-Push shaft; 3-Top cover; 4-Key base; 5-Elastic reset component; 6-Base plate; 61-Conductive structure; 7-Circuit board; 71-Light-emitting element; 72-Electrical connection terminal; 8-Electrical connector. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. To provide a clear and complete description of the technical solution, the following embodiments are selected for illustration; these embodiments are only some embodiments of the present invention; other embodiments obtained based on this application without creative effort are all within the scope of protection of the present invention.

[0022] In the following embodiments, it should be noted that the terms "upper," "lower," "left," "right," "inner," "outer," "top / bottom," etc., are all based on the orientation or positional relationship shown in the accompanying drawings and are only for the purpose of clearly describing this embodiment. They do not indicate or imply that the device or element referred to must have a specific orientation, and therefore should not be construed as a limitation of this application. At the same time, the terms "first" and "second" in the embodiments are only used for descriptive purposes and do not represent an indication or implication of relative importance.

[0023] like Figure 1 As shown, the specific embodiment of this utility model is a light-emitting button, which mainly includes a light guide shell 1, a button shaft 2, an upper cover 3, a key base 4, an elastic reset component 5, a base plate 6, and a circuit board 7.

[0024] The key base 4 is fixed to the base plate 6. The push pin 2 is movably mounted inside the key base 4, and the elastic return element 5 (usually a spring) acts between the push pin 2 and the key base 4 to provide a rebound force after pressing. The top cover 3 is fastened to the key base 4, together forming a space to accommodate the push pin 2 and the elastic return element 5.

[0025] The core innovation of this utility model lies in the integrated light-emitting module formed by the light guide shell 1 and the circuit board 7. The light guide shell 1 is injection molded from a high light transmittance material (such as PMMA, PC, etc.), and its overall structure is a dome-shaped structure with an open top, which is fitted over the outside of the upper cover 3. At the bottom of the light guide shell 1, there are multiple clearance structures 11. In this embodiment, the clearance structure 11 is a recessed part in the form of four blind holes.

[0026] The circuit board 7 is reliably fixed to the bottom of the light guide housing 1 by adhesive bonding. The outer contour of the circuit board 7 matches the bottom outer contour of the light guide housing 1, ensuring the compactness of the structure. Four LED light-emitting elements 71 are provided on the upper surface of the circuit board 7, and the positions of these light-emitting elements 71 precisely correspond to the four recesses 11 on the bottom of the light guide housing 1. After assembly, each LED light-emitting element 71 extends into the corresponding recess 11, allowing light to be directly injected into the material of the light guide housing 1. To optimize the light emission effect, tiny scattering dots or light-guiding textures (not shown in the figure) can be designed on the inner wall of the light guide housing 1, causing diffuse reflection of light internally, thereby achieving a uniform and soft light emission effect throughout the housing.

[0027] Electrical connection terminals 72 (e.g., solder pads) are provided on the lower surface of the circuit board 7. The electrical connection terminals 72 are electrically connected to the conductive structure 61 on the base plate 6 via an electrical connector 8. In this embodiment, one end of the electrical connector 8 maintains stable contact with the electrical connection terminals 72 on the lower surface of the circuit board 7, while the other end is inserted into the conductive structure 61 on the base plate 6. This connection method ensures the reliability of the electrical connection and facilitates the installation and removal of the entire light-emitting module.

[0028] This utility model also protects a keyboard, which includes a key area composed of multiple illuminated keys arranged as described above. Each illuminated key is electrically connected to the main base plate 6 of the keyboard via its electrical connector 8, forming a keyboard device with excellent illumination effect.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present utility model should be included within the protection scope of the technical solution of the present utility model.

Claims

1. A light-emitting button assembly, comprising a button shaft, a key base, a base plate, and a resilient reset member, wherein the button shaft is movably disposed within the key base, and the resilient reset member provides a reset force for the button shaft, characterized in that: It also includes a light guide housing and a circuit board. The circuit board is located below the light guide housing. A light-emitting element is provided on the upper surface of the circuit board facing the light guide housing. An electrical connection terminal is provided on the lower surface of the circuit board facing the base plate. A conductive structure is provided on the base plate. The electrical connection terminal is electrically connected to the conductive structure on the base plate through an electrical connector.

2. The luminous button assembly according to claim 1, characterized in that: The bottom of the light guide housing is provided with a clearance structure corresponding to the position of the light-emitting element.

3. The luminous button assembly according to claim 2, characterized in that: The clearance structure is a recess formed at the bottom of the light guide shell.

4. The luminous button assembly according to claim 2, characterized in that: The number of the air-blocking structure and the number of the light-emitting elements are at least four, and they correspond one-to-one.

5. The luminous button assembly according to claim 1, characterized in that: The outer contour of the circuit board is adapted to the bottom outer contour of the light guide shell.

6. The luminous button assembly according to claim 1, characterized in that: The circuit board is fixed to the bottom of the light guide shell by means of bonding, welding or snap-fit ​​connection.

7. The luminous button assembly according to claim 1, characterized in that: The conductive structure is a conductive socket, with one end of the electrical connector in contact with the electrical connection terminal and the other end in contact with the conductive socket on the base plate.

8. The luminous button assembly according to claim 1, characterized in that: It also includes an upper cover, the light guide shell is sleeved on the upper cover, and the key shaft is located between the upper cover and the key base.

9. A keyboard, characterized in that: Includes the illuminated button assembly as described in any one of claims 1-8.

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