Light guide body for steering wheel switch

Abstract

The utility model discloses a light guide body for a steering wheel switch, which comprises a Z-shaped light guide body, the horizontal plane at the lower part of the light guide body is an incident plane, the horizontal plane at the upper part of the light guide body is an emergent plane, the light guide body is also provided with a pressing rod part, and the emergent plane adopts a rough surface formed by a plurality of pits.

Description

Technical Field

[0001] This utility model belongs to the field of roller switch technology and relates to a light guide for steering wheel switches. Background Technology

[0002] A steering wheel switch is a specially designed control device cleverly installed on a car's steering wheel. Its main function is to provide the driver with a convenient and quick way to control certain vehicle functions, thereby improving driving safety and comfort. One of the core components of a steering wheel switch is a light guide. The light guide is used to guide the transmission direction of light from a light source, improving the brightness and uniformity of the emitted light. However, existing light guides cannot emit light in a specific direction, and the clarity of the light display is poor. Therefore, it is necessary to design a light guide for steering wheel switches to solve these problems. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a light guide for steering wheel switches.

[0004] To achieve the above objectives, the technical solution of this utility model is: a light guide for a steering wheel switch, characterized in that it includes a Z-shaped light guide body, the lower horizontal surface of the light guide body is the incident surface, the upper horizontal surface of the light guide body is the exit surface, the light guide body also has a pressing rod, and the exit surface is a rough surface formed by several pits.

[0005] The exit surface is also coated with a reflective film.

[0006] The light guide body also has vertically arranged guide ribs.

[0007] The guide rib is also connected to the pressing rod.

[0008] The light guide is made by one-piece injection molding.

[0009] By adopting the above technical solution, the beneficial effects of this utility model are:

[0010] In this invention, after the light guide is assembled, pressing the button turns the circuit on, and removing it turns the circuit off. The on / off action is timely and effective, meaning that pressing the button can achieve the function of turning the circuit on and off. The light guide body adopts a Z-shaped structure, and while the emission surface has roughness, it is also coated with a reflective film, allowing LED lights that do not emit light in a straight line to be refracted through the bend, achieving a uniform light transmission effect and avoiding the sunlight effect where the light is bright and the surrounding area is dark, making the light clearer. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the planar structure of this utility model.

[0012] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 3 This is an exploded view of the steering wheel switch.

[0014] Figure 4 This is a 3D structural diagram of the removed part of the steering wheel switch. Figure 1 .

[0015] Figure 5 This is a 3D structural diagram of the removed part of the steering wheel switch. Figure 2 .

[0016] Figure 6 This is a cross-sectional view of the steering wheel switch.

[0017] In the diagram, 10 is the light guide body; 101 is the incident surface; 102 is the exit surface; 20 is the pressing rod; 30 is the guide rib; 40 is the reflective film; 101 is the button; 102 is the panel; 102a is the guide groove; 103 is the PCB board; 103a is the micro switch; and 103b is the LED light. Detailed Implementation

[0018] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0019] like Figures 1-6 As shown, the light guide for the steering wheel switch includes a Z-shaped light guide body 10. The lower horizontal surface of the light guide body 10 is the incident surface 101, and the upper horizontal surface of the light guide body 10 is the exit surface 102. A reflective film 40 is also coated on the exit surface 102. The light guide body 10 also has a pressing lever portion 20. The exit surface 102 is a rough surface formed by several pits. Specifically, the exit surface 102 is a rough surface with controllable roughness, which can improve the light guide's output. The light uniformity is achieved by distributing multiple pits on the surface, and the scattering surfaces of the pits form a curved surface of a specific shape, which is a feature of existing technology. This curved surface can converge the light beam scattered by the pits, and it is also coated with a reflective film 40, thereby improving the light beam utilization rate and increasing the brightness of the emitted light beam. This allows the LED light 103b to transmit light more uniformly, without the bright light and dark surrounding sunlight effect. The LED light 103b, which does not emit light in a straight line, can achieve a uniform light transmission effect by refracting light through bends.

[0020] The light guide body 10 also has vertically arranged guide ribs 30. In the steering wheel switch, the guide ribs 30 are slidably installed in the guide groove 102a of the panel 102, so that the light guide can move up and down relative to the panel 102. Pressing the corresponding button 101 will cause the light guide to move downward. The pressing rod 20 will contact the corresponding electrical component on the PCB board 103 of the steering wheel switch, thereby triggering the connection or disconnection of the electrical connection. In this embodiment, the electrical component refers to the micro switch 103a of the PCB board 103. The pressing rod 20 can contact the micro switch 103a. The PCB board 103 also has an LED light 103b, which is located directly below the incident surface 101.

[0021] The guide rib 30 is also connected to the pressing rod part 20; the light guide is integrally injection molded, and in this embodiment, the light guide is processed using existing technology.

[0022] In summary, this solves the need for buttons to be both pressable and clearly backlit in confined spaces.

[0023] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0024] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A light guide for a steering wheel switch, characterized in that, It includes a Z-shaped light guide body (10), the lower horizontal surface of the light guide body (10) is the incident surface (101), the upper horizontal surface of the light guide body (10) is the exit surface (102), the light guide body (10) also has a pressing rod part (20), and the exit surface (102) is a rough surface formed by several pits.

2. A light guide for a steering wheel switch according to claim 1, characterized in that, The exit surface (102) is also coated with a reflective film (40).

3. A light guide for a steering wheel switch according to claim 1, characterized in that, The light guide body (10) also has vertically arranged guide ribs (30).

4. A light guide for a steering wheel switch according to claim 3, characterized in that, The guide rib (30) is also connected to the pressing rod (20).

5. A light guide for a steering wheel switch according to claim 1, characterized in that, The light guide is made by one-piece injection molding.

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