A multi-key control panel with good flatness

Abstract

The utility model relates to multi-key control panel technical field especially relates to a good flatness multi-key control panel, including casing, the circuit board of setting in the casing, setting at least two tact switches on the circuit board, at least two key caps are correspondingly set in each tact switch top, the bottom of each key cap is equipped with elastic buffer pad respectively, the top of each elastic buffer pad is connected with the bottom of corresponding key cap respectively, the bottom of each elastic buffer pad is connected with the top of corresponding tact switch respectively, the utility model discloses can guarantee each key cap flatness good while significantly reducing the production and processing cost, can better meet market demand.

Description

Technical Field

[0001] This utility model relates to the field of multi-button control panel technology, and in particular to a multi-button control panel with good flatness. Background Technology

[0002] In some electronic devices such as sound cards, multi-button control panels are often involved. Existing multi-button control panels include a housing, a circuit board inside the housing, at least two tactile switches on the circuit board, and at least two button caps respectively positioned above each tactile switch. The bottom of each button cap directly abuts against the top of the corresponding tactile switch. When a button cap is pressed, the button cap moves downward and transmits pressure to the corresponding tactile switch, triggering it. Due to the inherent height difference between the tactile switches and the unavoidable soldering height difference during installation on the circuit board, unevenness will inevitably occur between the button caps, affecting the product's appearance and user experience. To achieve good flatness between the button caps, extremely high requirements must be placed on the processing precision of the tactile switches and the installation precision of soldering them onto the circuit board, which will significantly increase production costs and make the product less competitive in the market. Utility Model Content

[0003] The purpose of this invention is to provide a multi-button control panel with good flatness to address the shortcomings of existing technologies. While ensuring the flatness of each button cap, it significantly reduces production and processing costs and better meets market demands.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a multi-button control panel with good flatness, including a housing, a circuit board disposed within the housing, at least two tactile switches disposed on the circuit board, and at least two button caps respectively disposed above each tactile switch. Each button cap has an elastic buffer pad at its bottom, the top of each elastic buffer pad is connected to the bottom of the corresponding button cap, and the bottom of each elastic buffer pad abuts against the top of the corresponding tactile switch.

[0005] A further improvement to the above solution is that the thickness of the elastic cushioning pad is 1-3 mm.

[0006] A further improvement to the above scheme is that the Shore hardness of the elastic buffer pad is 55-65 degrees.

[0007] A further improvement to the above solution is that the elastic cushioning pad is made of silicone material.

[0008] A further improvement to the above solution is that the button cap includes a button bracket disposed on one side of the tactile switch, a button body suspended above the tactile switch, a button spring arm disposed between the button bracket and the button body, and an elastic buffer pad located at the bottom center of the button body.

[0009] A further improvement to the above solution is that the button bracket, the button body, and the button spring arm are integrated into a single structure.

[0010] A further improvement to the above solution is that the bottom of the button body is provided with several limiting posts protruding downwards.

[0011] A further improvement to the above solution is that each of the limiting posts and the button body are integrated into one piece.

[0012] A further improvement to the above solution is that the button cap also includes a cap body disposed on the top of the button body.

[0013] A further improvement to the above solution is that the button bracket, button body, and button spring arm are all made of plastic, while the cap is made of metal.

[0014] The advantages of this utility model are as follows: This utility model provides a multi-button control panel with good flatness, including a housing, a circuit board disposed in the housing, at least two tactile switches disposed on the circuit board, and at least two button caps respectively disposed above each tactile switch. Each button cap has an elastic buffer pad at its bottom, the top of each elastic buffer pad is connected to the bottom of the corresponding button cap, and the bottom of each elastic buffer pad abuts against the top of the corresponding tactile switch. Compared to existing methods that rely on extremely precise control of the manufacturing and installation of tactile switches to reduce errors and ensure flatness between button caps, this invention uses an elastic buffer pad sandwiched between the button cap and the tactile switch. The elastic buffer pad's stretchability and cushioning properties allow it to adapt to deformation and absorb height differences between the tactile switches. This significantly reduces the requirements for the manufacturing and installation precision of the tactile switches while ensuring good flatness of the button caps. Consequently, it significantly reduces production costs while maintaining good flatness of the button caps, better meeting market demands. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0017] Figure 3 This is a cross-sectional structural diagram of the circuit board, tactile switch, button cap, and elastic buffer pad of this utility model.

[0018] Explanation of reference numerals in the attached diagram: 1. Circuit board; 2. Tactile switch; 3. Button cap; 31. Button bracket; 32. Button body; 33. Button spring arm; 34. Limiting post; 35. Cap body; 4. Elastic buffer pad; 5. Housing. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings, such as... Figure 1-3 As shown, this utility model includes a housing 5, a circuit board 1 disposed within the housing 5, at least two tactile switches 2 disposed on the circuit board 1, and at least two button caps 3 respectively disposed above each tactile switch 2. Each button cap 3 has an elastic buffer pad 4 at its bottom, the top of each elastic buffer pad 4 is connected to the bottom of the corresponding button cap 3, and the bottom of each elastic buffer pad 4 abuts against the top of the corresponding tactile switch 2. Compared to existing methods that rely on extremely precise control of the processing and installation accuracy of the tactile switches 2 to reduce errors and ensure flatness between the button caps 3, this utility model, by sandwiching an elastic buffer pad 4 between the button cap 3 and the tactile switch 2, utilizes the stretchability and buffering properties of the elastic buffer pad 4 to adapt to deformation and absorb height errors between the tactile switches 2. This significantly reduces the requirements for the processing and installation accuracy of the tactile switches 2 while ensuring good flatness of the button caps 3, thereby significantly reducing production costs while maintaining good flatness of the button caps 3 and better meeting market demands.

[0020] If the thickness of the elastic buffer pad 4 is less than 1mm, the compressible stroke of the buffer pad is too short, the tolerance compensation ability is insufficient, and it is difficult to ensure flatness. If the thickness of the elastic buffer pad 4 exceeds 3mm, it will cause the overall travel of the button to be too long, resulting in a loose feeling when pressing. The thickness of the elastic buffer pad 4 of this utility model is preferably 1-3mm, which can not only fully absorb errors to ensure flatness, but also maintain the stable and firm feel of the button.

[0021] Elastic buffer pad 4 with a hardness below 55 degrees is too soft. Although it can absorb tolerances well, it will result in poor button support, weak rebound, and unclear triggering feel. Elastic buffer pad 4 with a hardness above 65 degrees is too hard, which reduces the error absorption capacity and makes the pressing feel stiff, approaching rigid contact. The preferred Shore hardness of the elastic buffer pad 4 of this utility model is 55-65 degrees, which can absorb errors well and also ensure a good pressing feel.

[0022] The elastic cushioning pad 4 is made of silicone material, which not only has good resilience but is also easy to process and mold, making it well-suited for absorbing errors.

[0023] The button cap 3 includes a button bracket 31 disposed on one side of the tactile switch 2, a button body 32 suspended above the tactile switch 2, a button spring arm 33 disposed between the button bracket 31 and the button body 32, and an elastic buffer pad 4 located at the bottom center of the button body 32. Compared with the button with a spring compression and rebound structure, the button cap 3 of this utility model adopts a cantilever beam structure, which can be made thinner and lighter overall.

[0024] The button bracket 31, button body 32, and button spring arm 33 are integrated into one piece, with fewer parts, which not only makes them easy to assemble but also avoids errors during the assembly of individual parts.

[0025] The bottom of the button body 32 has several downward protruding limit posts 34. By setting the limit posts 34, the maximum downward stroke of the button cap 3 can be limited, thereby avoiding irreversible physical damage to the internal spring of the tactile switch 2 when the user applies too much force, which greatly improves the durability and reliability of the product.

[0026] Each of the aforementioned limiting posts 34 and the button body 32 is an integrated structure, with fewer overall parts, which not only makes it easy to assemble, but also avoids errors during the assembly of individual parts.

[0027] The button cap 3 also includes a cap body 35 set on the top of the button body 32. The button bracket 31, button body 32, and button spring arm 33 are all made of plastic, while the cap body 35 is made of metal. The button bracket 31, button body 32, and button spring arm 33 made of plastic can better achieve lightweight and cost control, while the cap body 35 made of metal has a better texture and wear resistance.

[0028] Of course, the above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A multi-button control panel with good flatness, comprising a housing (5), a circuit board (1) disposed within the housing (5), at least two tactile switches (2) disposed on the circuit board (1), and at least two button caps (3) respectively disposed above each tactile switch (2), characterized in that: Each of the button caps (3) has an elastic buffer pad (4) at its bottom. The top of each elastic buffer pad (4) is connected to the bottom of the corresponding button cap (3), and the bottom of each elastic buffer pad (4) abuts against the top of the corresponding tactile switch (2).

2. The multi-button control panel with good flatness according to claim 1, characterized in that: The thickness of the elastic cushioning pad (4) is 1-3 mm.

3. A multi-button control panel with good flatness according to claim 1, characterized in that: The Shore hardness of the elastic buffer pad (4) is 55-65 degrees.

4. A multi-button control panel with good flatness according to claim 1, characterized in that: The elastic cushioning pad (4) is made of silicone material.

5. A multi-button control panel with good flatness according to claim 1, characterized in that: The button cap (3) includes a button bracket (31) disposed on one side of the tactile switch (2), a button body (32) suspended above the tactile switch (2), a button spring arm (33) disposed between the button bracket (31) and the button body (32), and an elastic buffer pad (4) located at the bottom center of the button body (32).

6. A multi-button control panel with good flatness according to claim 5, characterized in that: The button bracket (31), button body (32), and button spring arm (33) are an integrated structure.

7. A multi-button control panel with good flatness according to claim 5, characterized in that: The bottom of the button body (32) is provided with several limiting posts (34) protruding downwards.

8. A multi-button control panel with good flatness according to claim 7, characterized in that: Each of the aforementioned limit posts (34) and the button body (32) is an integral structure.

9. A multi-button control panel with good flatness according to claim 5, characterized in that: The button cap (3) also includes a cap body (35) disposed on the top of the button body (32).

10. A multi-button control panel with good flatness according to claim 9, characterized in that: The button bracket (31), button body (32), and button spring arm (33) are all made of plastic, while the cap body (35) is made of metal.

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