Key offset prevention structure of convex electronic membrane switch

Abstract

The utility model discloses a kind of anti-keyboard offset structures of convex electronic membrane switch, specifically related to anti-keyboard offset structure technical field, including key mechanism, bottom plate assembly and mounting assembly, bottom plate assembly is installed in the below of key mechanism, and mounting assembly is installed in the below of the bottom plate assembly, it is limited horizontal displacement by the cooperation limit component in key mechanism, i. e.

Description

Technical Field

[0001] This utility model relates to the technical field of anti-key offset structure, and more specifically, to an anti-key offset structure for an outwardly protruding electronic membrane switch. Background Technology

[0002] Electronic membrane switches are widely used in home appliances, medical equipment, industrial control and other fields due to their compact structure, low cost and good sealing performance. Protruding buttons have become a common design because of their obvious tactile feedback and intuitive operation. However, traditional protruding buttons are prone to button misalignment due to uneven pressing pressure and material aging during long-term use, which can lead to button failure, decreased feel or appearance deformation, affecting product reliability and user experience. Therefore, anti-button misalignment structure has emerged.

[0003] A search revealed that publication number CN221883268U discloses a deformation detection device for touchscreen production that prevents offset. The device includes a detection machine body, a control component fixedly connected to the front of the body, a mounting rod fixedly connected to the top of the body, a detection mechanism fixedly connected to the top of the mounting rod, a mounting groove on the inner side of the mounting rod, a fixing groove on one side of the mounting rod, an operating plate movably connected to the inner side of the mounting groove, an adjustment groove on the top of the operating plate, an adjustment plate movably connected to the top of the adjustment groove, a clamping plate fixedly connected to one side of the adjustment plate, a fastening screw movably connected through the top of the clamping plate, an adjustment screw movably connected through the lower side of the adjustment plate away from the clamping plate, an adjustment nut movably threadedly connected to the outer side of the adjustment screw, and a fixing plate fixedly connected to one end of the adjustment screw. The fixing plate is fixedly connected to the top of the operating plate. By setting up the adjustment groove, adjustment plate, adjustment screw, and adjustment nut, the device is simple to operate, improves work efficiency, and reduces workload. The inventors discovered the following problems with the existing technology during the development of this utility model:

[0004] Existing electronic membrane switches, lacking precise limiting and guiding structures, are prone to horizontal deviation during button pressing, making it difficult to guarantee the accuracy of the pressing direction. This results in poor operational precision and affects the user experience. In terms of durability, traditional devices have weak buffer designs that cannot effectively absorb the impact of pressing. Furthermore, internal electronic components are easily damaged due to long-term vibration. In addition, their poor sealing allows dust and liquids to easily enter, further shortening the device's lifespan and reducing overall reliability and durability.

[0005] Therefore, a structure for preventing key offset of a convex electronic membrane switch is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides an anti-key offset structure for an outwardly convex electronic membrane switch to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a key offset prevention structure for an outwardly protruding electronic membrane switch, comprising a key mechanism, a base plate assembly, and a mounting assembly, wherein the base plate assembly is mounted below the key mechanism, and the mounting assembly is mounted below the base plate assembly.

[0008] Preferably, the button mechanism includes a pressing component, a limiting component, and a fixing component, wherein the pressing component has a limiting component on its outer diameter surface, and the limiting component has a fixing component mounted on its side.

[0009] Preferably, the pressing assembly includes a button cap, a pressing post, and a restoring spring, and the pressing post is installed below the button cap, and the restoring spring is provided on the outer diameter surface of the pressing post.

[0010] Preferably, the pressing column includes a central column, a first fixing ring, and a silicone gasket, wherein the first fixing ring is installed on the outer diameter surface of the central column, and the silicone gasket is installed below the central column.

[0011] Preferably, the limiting component includes a limiting ring, a button base, and a guide post, with the button base installed below the limiting ring and the guide post installed below the button base.

[0012] Preferably, the fixing component includes a positioning pin, four corner mounting posts and a sealing plate, and the four corner mounting posts are provided on the side of the positioning pin, and the sealing plate is provided on the side of the four corner mounting posts away from the positioning pin.

[0013] Preferably, the base plate assembly includes a buffer pad, an elastic silicone layer, and a membrane switch substrate, wherein the elastic silicone layer is mounted above the buffer pad and the membrane switch substrate is mounted below the elastic silicone layer.

[0014] Preferably, the mounting assembly includes a base plate, a connecting block, and a second fixing ring, wherein the connecting block is mounted on the side of the base plate, and the second fixing ring is mounted on the side of the connecting block away from the base plate.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] 1. Compared with the prior art, the anti-key offset structure of the convex electronic membrane switch limits horizontal offset through the limiting component in the key mechanism, namely the cooperation between the limiting ring and the key cap. The key base and guide post provide a vertical guide path for the pressing post, accurately controlling the key movement trajectory. At the same time, the positioning pins of the fixing component, the four corner mounting posts and the base plate component are firmly connected to ensure the stability of the overall structure, which greatly improves the accuracy and reliability of operation.

[0017] 2. Compared with the prior art, the anti-key offset structure of this convex electronic membrane switch uses a multi-buffered structure. The buffer pad and elastic silicone layer in the base plate assembly form a double-layer buffer to absorb the pressing impact and reduce the impact of vibration on the membrane switch substrate. The silicone pad at the bottom of the pressing post can also effectively buffer the pressing impact and avoid wear on the base plate assembly. In addition, the sealing plate prevents dust and liquid from entering the interior, further protecting the electronic components. This improves the durability of the device in many ways and extends its service life. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the mounting components of this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of the button mechanism of this utility model.

[0021] Figure 4 This is a three-dimensional structural diagram of the pressing column of this utility model.

[0022] The attached figures are labeled as follows: 1. Button mechanism; 2. Base plate assembly; 3. Mounting assembly; 4. Pressing assembly; 5. Limiting assembly; 6. Fixing assembly; 7. Button cap; 8. Pressing post; 9. Returning spring; 10. Central post; 11. First fixing ring; 12. Silicone gasket; 13. Limiting ring; 14. Button base; 15. Guide post; 16. Positioning pin; 17. Four corner mounting posts; 18. Sealing plate; 19. Buffer gasket; 20. Elastic silicone layer; 21. Membrane switch substrate; 22. Base plate; 23. Connecting block; 24. Second fixing ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] As attached Figures 1 to 4 The diagram shows an anti-button offset structure for an outward-protruding electronic membrane switch, comprising a button mechanism 1, a base plate assembly 2, and a mounting assembly 3. The base plate assembly 2 is mounted below the button mechanism 1, and the mounting assembly 3 is mounted below the base plate assembly 2.

[0026] Specifically: When a worker needs to operate the electronic membrane switch, he / she needs to press the corresponding button mechanism 1 with his / her finger. When the button mechanism 1 is pressed, it will squeeze the base plate assembly 2 below it, thereby causing the electronic components of the base plate assembly 2 to react, thus enabling the worker to control the electronic membrane switch. The mounting assembly 3 can fix the electronic membrane switch in a specific position and prevent it from falling off.

[0027] Example 2

[0028] Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 4 As shown below, see details:

[0029] In a preferred embodiment, the button mechanism 1 includes a pressing component 4, a limiting component 5, and a fixing component 6. The pressing component 4 has the limiting component 5 on its outer diameter surface, and the fixing component 6 is installed on the side of the limiting component 5. When the worker operates the electronic membrane switch by pressing the button mechanism 1, the pressing component 4 slides along the channel of the limiting component 5 and presses a specific position on the base plate component 2, thereby enabling the worker to control the electronic membrane switch. The fixing component 6 can fix the limiting component 5 and the base plate component 2 together.

[0030] In a preferred embodiment, the pressing assembly 4 includes a button cap 7, a pressing post 8, and a restoring spring 9. The pressing post 8 is installed below the button cap 7, and the restoring spring 9 is provided on the outer diameter surface of the pressing post 8. The button cap 7 receives external pressing force and transmits the force to the base plate assembly 2 below through the pressing post 8. The restoring spring 9 is sleeved on the pressing post 8. When pressed, it is compressed to store energy and provides a restoring force after release to ensure that the button automatically rebounds.

[0031] In a preferred embodiment, the pressing column 8 includes a central column 10, a first fixing ring 11, and a silicone pad 12. The first fixing ring 11 is installed on the outer diameter surface of the central column 10, and the silicone pad 12 is installed below the central column 10. The first fixing ring 11 fixes the restoring spring 9 to the outer diameter surface of the central column 10, and the silicone pad 12 is adhered to the bottom of the pressing column 8 to buffer the pressing impact and avoid wear on the base plate assembly 2.

[0032] In a preferred embodiment, the limiting component 5 includes a limiting ring 13, a button base 14, and a guide post 15. The button base 14 is installed below the limiting ring 13, and the guide post 15 is installed below the button base 14. The limiting ring 13 and the pressing post 8 are slidably connected, and the guide post 15 and the pressing post 8 are also slidably connected. The limiting ring 13 is fixed to the outside of the button cap 7 to limit the horizontal offset range of the button. The button base 14 and the guide post 15 cooperate to provide a vertical guide path for the pressing post 8, ensuring accurate pressing direction.

[0033] In a preferred embodiment, the fixing component 6 includes a positioning pin 16, four corner mounting posts 17, and a sealing plate 18. The four corner mounting posts 17 are provided on the side of the positioning pin 16, and the sealing plate 18 is provided on the side of the four corner mounting posts 17 away from the positioning pin 16. The positioning pin 16 is inserted into the corresponding hole of the base plate component 2 to achieve the initial positioning of the button mechanism 1. The four corner mounting posts 17 are fixed to the base plate component 2 by screws to enhance the overall structural stability. The sealing plate 18 prevents dust and liquid from entering the interior of the electronic membrane switch.

[0034] In a preferred embodiment, the base plate assembly 2 includes a buffer pad 19, an elastic silicone layer 20, and a membrane switch substrate 21. The elastic silicone layer 20 is installed above the buffer pad 19, and the membrane switch substrate 21 is installed below the elastic silicone layer 20. The buffer pad 19 and the elastic silicone layer 20 form a double-layer buffer structure to absorb the impact force during pressing and reduce the impact of vibration on the membrane switch substrate 21. The membrane switch substrate 21 is the core conductive component, which receives the trigger signal from the pressing post 8 and transmits it to the external circuit.

[0035] In a preferred embodiment, the mounting assembly 3 includes a base plate 22, a connecting block 23, and a second fixing ring 24. The connecting block 23 is mounted on the side of the base plate 22, and the second fixing ring 24 is mounted on the side of the connecting block 23 away from the base plate 22. The base plate 22 serves as the lowest supporting structure and is connected to the second fixing ring 24 through the connecting block 23. The second fixing ring 24 is used to accommodate bolts with different mounting hole diameters, thereby enhancing the versatility of the structure.

[0036] The working process of this utility model is as follows: First, the electronic membrane switch is connected to the second fixing ring 24 via the base plate 22 in the mounting assembly 3 and the connecting block 23, fixing the whole in a specific position. The second fixing ring 24 is compatible with different bolt hole diameters. In the button mechanism 1, the button cap 7 of the pressing assembly 4 receives the external pressing force, which is transmitted to the lower part via the central column 10 of the pressing column 8. The restoring spring 9 outside the central column 10 is fixed by the first fixing ring 11. When pressed, the restoring spring 9 moves away from the side fixed to the first fixing ring 11 and presses against the lower plate of the button base 14. The system compresses and stores energy, then releases and resets, causing the button cap 7 to automatically spring back. The silicone pad 12 at the bottom of the central column 10 buffers the impact and prevents wear on the base plate assembly 2. The limiting ring 13 of the limiting assembly 5 is fitted around the outside of the button cap 7 to limit horizontal displacement. The button base 14 and guide post 15 provide a vertical guide path for the pressing post 8 to ensure accurate pressing direction. The positioning pin 16 of the fixing assembly 6 is inserted into the hole of the base plate assembly 2 to achieve initial positioning. The four corner mounting posts 17 are fixed to the base plate assembly 2 with screws to enhance stability. The sealing plate 18 prevents dust and liquid from entering the interior.

[0037] The buffer pad 19 of the base plate assembly 2 and the elastic silicone layer 20 form a double-layer buffer structure to absorb the impact force, while the core conductive membrane switch substrate 21 receives the trigger signal of the pressing post 8 and transmits it to the external circuit. Thus, when the button mechanism 1 is pressed, the pressing component 4 is precisely squeezed to a specific position of the base plate assembly 2 by the guidance and limiting component 5, so as to achieve anti-offset control and signal transmission. The above is the working principle of the anti-button offset structure of the convex electronic membrane switch.

Claims

1. A structure for preventing key offset of a protruding electronic membrane switch, comprising a key mechanism (1), a base plate assembly (2), and a mounting assembly (3), characterized in that: A base plate assembly (2) is installed below the button mechanism (1), and an installation assembly (3) is installed below the base plate assembly (2). The button mechanism (1) includes a pressing assembly (4), a limiting assembly (5) and a fixing assembly (6). The outer diameter surface of the pressing assembly (4) is provided with a limiting assembly (5), and a fixing assembly (6) is installed on the side of the limiting assembly (5). The pressing assembly (4) includes a button cap (7), a pressing post (8) and a restoring spring (9), and the pressing post (8) is installed below the button cap (7), and the restoring spring (9) is provided on the outer diameter surface of the pressing post (8). The pressing column (8) includes a central column (10), a first fixing ring (11) and a silicone pad (12), and the first fixing ring (11) is installed on the outer diameter surface of the central column (10), and the silicone pad (12) is installed below the central column (10). The base plate assembly (2) includes a buffer pad (19), an elastic silicone layer (20) and a membrane switch substrate (21), with the elastic silicone layer (20) mounted above the buffer pad (19) and the membrane switch substrate (21) mounted below the elastic silicone layer (20). The mounting assembly (3) includes a base plate (22), a connecting block (23) and a second fixing ring (24), and the connecting block (23) is mounted on the side of the base plate (22), and the second fixing ring (24) is mounted on the side of the connecting block (23) away from the base plate (22).

2. The anti-key offset structure for a convex electronic membrane switch according to claim 1, characterized in that: The limiting component (5) includes a limiting ring (13), a button base (14) and a guide post (15), and the button base (14) is installed below the limiting ring (13), and the guide post (15) is installed below the button base (14).

3. The anti-key offset structure for a convex electronic membrane switch according to claim 2, characterized in that: The fixing component (6) includes a positioning pin (16), four corner mounting posts (17) and a sealing plate (18), and the four corner mounting posts (17) are provided on the side of the positioning pin (16), and the sealing plate (18) is provided on the side of the four corner mounting posts (17) away from the positioning pin (16).

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