Knob key light-transmitting multifunctional combined structure

Abstract

A kind of knob button light-transmitting multifunctional combination structure, including shell light-shielding plastic part, light-transmitting plastic part, light-transmitting button cap, light-blocking plastic knob, hollow knob, button and PCBA board, the shell light-shielding plastic part is fixedly connected with PCBA board, the shell light-shielding plastic part is hollow structure, the light-transmitting plastic part is located in the middle of shell light-shielding plastic part, the light-transmitting plastic part is hollow structure, the light-blocking plastic knob is located in the middle of light-transmitting plastic part, the hollow knob is located below light-blocking plastic knob and is assembled with it, the light-blocking plastic knob is hollow structure, the light-transmitting button cap is located in the middle of light-blocking plastic knob, the button is located below light-transmitting button cap and is assembled with it, first LED lamp is equipped on PCBA board corresponding light-transmitting plastic part area, second LED lamp is equipped on PCBA board corresponding light-transmitting button cap area.The utility model structure is exquisite, light-shielding effect is good, light is uniform and can realize multifunctional independent indication.

Description

Technical Field

[0001] This utility model relates to the field of audio technology, and in particular to a multi-functional combination structure for a knob and button that transmits light. Background Technology

[0002] In modern electronic devices, such as car infotainment systems, audio systems, industrial control panels, and smart home controllers, knobs and buttons are two of the most basic and commonly used human-computer interaction elements. To improve user experience and aesthetics, backlighting is often added to these elements to clearly display their functions and status in dim environments.

[0003] Currently, integrating knobs and buttons into a single unit is a common practice to save panel space and achieve multi-functional control. However, this integration brings new technical challenges: Light interference (crossing light) problem: When the knob area and the central button area need to display different colors or brightness of light, the light from different LED light sources is prone to leakage and interference, resulting in blurred display and reduced visibility; Structural complexity: Simple combined structures are difficult to achieve reliable rotary encoding, key triggering, and complex optical path isolation simultaneously within a limited space, often resulting in bloated structures or assembly difficulties; User experience: The uniformity of light directly affects the texture and quality of a product. Uneven light or light crosstalk will give people a poor experience.

[0004] Therefore, there is an urgent need for a multi-functional combination structure of knobs and buttons that is compact, effectively prevents light interference, provides uniform light, and offers a good user experience. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a multi-functional combination structure for a knob and button that is light-transmitting, with a compact structure, good light-blocking effect, uniform light, and the ability to achieve multi-functional independent indication.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a multi-functional combination structure for a knob and button that is light-transmitting, including a light-shielding plastic outer shell, a light-transmitting plastic outer shell, a light-transmitting button cap, a light-blocking plastic knob, a hollow knob, a button, and a PCBA board. The light-shielding plastic outer shell is fixedly connected to the PCBA board. The light-shielding plastic outer shell has a hollow structure. The light-transmitting plastic outer shell is located in the middle of the light-shielding plastic outer shell. The light-blocking plastic knob is located in the middle of the light-transmitting plastic outer shell. The hollow knob is located below the light-blocking plastic knob and assembled with it. The light-blocking plastic knob has a hollow structure. The light-transmitting button cap is located in the middle of the light-blocking plastic knob. The button is located below the light-transmitting button cap and assembled with it. The hollow knob and the button are both electrically connected to the PCBA board. A first LED light is provided on the PCBA board corresponding to the area of ​​the light-transmitting plastic outer shell, and a second LED light is provided on the PCBA board corresponding to the area of ​​the light-transmitting button cap. The principle of this invention is as follows: When the first LED on the PCBA board is lit, the light shines upwards and illuminates the bottom of the light-transmitting plastic component. Due to the edge blocking of the outer light-shielding plastic component and the light-blocking plastic knob, the light is confined within a ring-shaped area. The light is conducted within the light-transmitting plastic component and diffuses evenly outwards through its top light-emitting surface, forming a bright and uniform ring-shaped light effect. When the second LED on the PCBA board is lit, the light shines upwards to the bottom of the light-transmitting keycap, and the light is conducted within the light-transmitting keycap. The light-blocking plastic knob blocks the outer layer of light, only illuminating the light-transmitting keycap.

[0007] As an improvement, the light-transmitting plastic part is annular, comprising a light-transmitting body, a flange on the outside of the light-transmitting body, and an annular groove on the inside of the light-transmitting body. The outer shell light-shielding plastic part presses against the flange, and the edge of the light-blocking plastic knob extends above the annular groove.

[0008] As an improvement, the top light-emitting surface of the light-transmitting body is conical.

[0009] As an improvement, the lower end of the light-transmitting button cap extends into the hollow knob.

[0010] As an improvement, the light-transmitting keycap is a two-color light-transmitting keycap.

[0011] The beneficial effects of this utility model compared with the prior art are: 1. The hollow knob and button functions are cleverly assembled in layers, with a reasonable structural layout, saving installation space and realizing multi-functional integration; 2. By staggering the arrangement and structural design of "light-blocking" and "light-transmitting" components, physical isolation and light control of the two light-emitting areas are achieved, effectively solving the common backlight crosstalk problem in multifunctional combined devices. Attached Figure Description

[0012] Figure 1This is an exploded view of the present invention.

[0013] Figure 2 This is a cross-sectional view of the present invention.

[0014] Figure 3 This is a top view of the present invention.

[0015] Figure 4 This is the front view of the present utility model. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] like Figures 1 to 4 As shown, a multi-functional combination structure for a knob and button with light transmission includes a light-shielding plastic outer shell 1, a light-transmitting plastic outer shell 2, a dual-color light-transmitting button cap 3, a light-blocking plastic knob 4, a hollow knob 5, a button 6, and a PCBA board 8. The light-shielding plastic outer shell 1 is fixedly connected to the PCBA board 8 by bolts 9. The light-shielding plastic outer shell 1 has a hollow structure, and the light-transmitting plastic outer shell 2 is located in the middle of the light-shielding plastic outer shell 1, with the light-shielding plastic outer shell 1 blocking the outside of the light-transmitting plastic outer shell 2. The light-transmitting plastic component 2 has a hollow structure. The light-blocking plastic knob 4 is located in the middle of the light-transmitting plastic component 2, and the light-blocking plastic knob 4 covers the inner side of the light-transmitting plastic component 2. The light-transmitting plastic component 2 is annular, including a light-transmitting body, a flange on the outer side of the light-transmitting body, and an annular groove on the inner side of the light-transmitting body. The outer shell light-blocking plastic component 1 presses against the flange, and a positioning structure is also provided between the flange and the PCBA board 8. The edge of the light-blocking plastic knob 4 extends to the top of the annular groove. The top light-emitting surface of the light-transmitting body is conical, which plays a good role in guiding and scattering light, making the annular light band uniform in brightness, with excellent visual effect and improved product quality. The hollow knob 5 is located below the light-blocking plastic knob 4 and is assembled with it. The two can be assembled together by snap-fit ​​or bushing. The light-blocking plastic knob 4 drives the hollow knob 5. The light-blocking plastic knob 4 has a hollow structure. The dual-color translucent button cap 3 is located in the middle of the light-blocking plastic knob 4, and the lower end of the dual-color translucent button cap 3 extends into the hollow knob 5. The button is located below the dual-color translucent button cap 3 and is assembled with it. Both the hollow knob 5 and the button are electrically connected to the PCBA board 8. A first LED light 71 is provided on the PCBA board 8 corresponding to the area of ​​the translucent plastic part 2, and a second LED light 72 is provided on the PCBA board 8 corresponding to the area of ​​the dual-color translucent button cap 3.

[0018] like Figure 1As shown, the assembly method of this utility model is as follows: the LED light, button 6, and hollow knob 5 are all welded onto the PCBA board 8 to form a component; the light-transmitting plastic part 2 is assembled onto the outer light-shielding plastic part 1; then the component consisting of the LED light, button 6, hollow knob 5, and PCBA board 8 is assembled onto the outer light-shielding plastic part 1; the screws are tightened onto the PCBA board 8; the light-blocking plastic knob 4 is assembled from the middle of the light-transmitting plastic part 2 onto the hollow knob 5; and the dual-color light-transmitting button cap 3 is assembled from the middle of the light-blocking plastic knob 4 onto the hollow knob 5.

[0019] The principle of this invention is as follows: When the first LED 71 on the PCBA board 8 is lit, the light shines upward and illuminates the bottom of the light-transmitting plastic part 2. Due to the edge blocking of the outer light-shielding plastic part 1 and the light-blocking plastic knob 4, the light is confined within the annular area. The light is conducted within the light-transmitting plastic part 2 and diffuses evenly outward through its top light-emitting surface, forming a bright and uniform annular light effect. When the second LED 72 on the PCBA board 8 is lit, the light shines upward and illuminates the bottom of the dual-color light-transmitting keycap 3. The light is conducted within the dual-color light-transmitting keycap 3. The light-blocking plastic knob 4 blocks the outer light, only illuminating the dual-color light-transmitting keycap 3.

Claims

1. A multi-functional combination structure for a knob and button that transmits light, characterized in that: The device includes a light-shielding plastic outer shell, a light-transmitting plastic outer shell, a light-transmitting button cap, a light-blocking plastic knob, a hollow knob, a button, and a PCBA board. The light-shielding plastic outer shell is fixedly connected to the PCBA board. The light-shielding plastic outer shell has a hollow structure. The light-transmitting plastic outer shell is located in the middle of the light-shielding plastic outer shell. The light-blocking plastic knob is located in the middle of the light-transmitting plastic outer shell. The hollow knob is located below the light-blocking plastic knob and assembled with it. The light-blocking plastic knob has a hollow structure. The light-transmitting button cap is located in the middle of the light-blocking plastic knob. The button is located below the light-transmitting button cap and assembled with it. Both the hollow knob and the button are electrically connected to the PCBA board. A first LED light is provided on the PCBA board corresponding to the area of ​​the light-transmitting plastic outer shell, and a second LED light is provided on the PCBA board corresponding to the area of ​​the light-transmitting button cap.

2. The multi-functional combination structure for a knob and button that transmits light according to claim 1, characterized in that: The light-transmitting plastic part is annular and includes a light-transmitting body, a flange on the outside of the light-transmitting body, and an annular groove on the inside of the light-transmitting body. The outer shell light-shielding plastic part presses against the flange, and the edge of the light-blocking plastic knob extends above the annular groove.

3. The multi-functional combination structure for a knob and button that transmits light, as described in claim 2, is characterized in that: The top light-emitting surface of the light-transmitting main body is conical.

4. The multi-functional combination structure for a knob and button that transmits light according to claim 1, characterized in that: The lower end of the light-transmitting button cap extends into the hollow knob.

5. The multi-functional combination structure for a knob and button that transmits light according to claim 1, characterized in that: The translucent keycap is a two-color translucent keycap.

Images