A tactile switch with buffer protection function

Abstract

This utility model relates to the field of tactile switch technology, specifically a tactile switch with buffer protection function. The utility model uses a buffer base that, via a limiting post, moves a buffer pad directly below a plunger. When the plunger is pressed by external forces, it contacts the buffer pad, causing the buffer pad to slide longitudinally along the outer wall of the limiting post, simultaneously compressing the buffer spring. The elastic deformation of the buffer spring cushions the plunger. The limiting block drives the friction plate and absorbent slide plate to reciprocate laterally, allowing the friction plate to rub against the moving and stationary contacts. Alternatively, alcohol can be injected into the inner cavity of the fixed base, allowing the alcohol to sequentially soak the absorbent cotton block and the absorbent slide plate. This allows the alcohol on the absorbent slide plate to contact the oxide layer of the stationary contact with the moving contact, resulting in better removal of the oxide layer.

Description

Technical Field

[0001] This utility model relates to the field of tactile switch technology, specifically a tactile switch with buffer protection function. Background Technology

[0002] A tactile switch, also known as a micro switch, is an electronic component designed to allow users to control the connection and disconnection of the switch with a simple press. This type of switch utilizes an internal metal spring that bounces when force is applied, thereby opening and closing the circuit. Tactile switches have several significant advantages, including low contact resistance, high precision operating force, and a variety of specifications. Due to these characteristics, tactile switches are widely used in various electronic devices and home appliances, such as remote controls, mobile phones, and computer keyboards. Tactile switches lack a buffering effect. When repeatedly pressed forcefully for a long time, the internal metal spring gradually loses its elasticity, eventually failing to reset or breaking, thus shortening the switch's lifespan. At the same time, the spring of the tactile switch is prone to oxidation, forming an insulating oxide layer, which leads to increased contact resistance or even open circuit.

[0003] Therefore, a tactile switch with buffer protection is needed to improve the above problems. Utility Model Content

[0004] To address the problem that when a tactile switch is repeatedly pressed forcefully over a long period of time, the internal metal spring gradually loses its elasticity, eventually failing to reset or breaking, thus shortening the switch's lifespan, this invention provides a tactile switch with a buffer protection function to solve the aforementioned problem.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A tactile switch with buffer protection function includes a switch base. An installation groove is formed on the opposite outer wall of the switch base. A buffer component is installed on the inner wall of the installation groove. A limiting groove is formed on the outer wall of the switch base. A cleaning component is installed on one side of the limiting groove, located on the inner wall of the switch base. A fixing buckle is provided on the opposite outer wall of the switch base. A switch cover is installed on the outer wall of the fixing buckle. A plunger is slidably connected to the outer wall of the switch cover. A reaction spring is installed directly below the plunger and located on the inner wall of the switch base. A moving contact is installed directly below the reaction spring and located on the inner wall of the switch base. A stationary contact is installed on one side of the moving contact and located on the inner wall of the switch base. The switch base has symmetrically arranged contact terminals on its opposite outer walls. One end of each contact terminal passes through the switch base and extends to the inner wall of the switch base, where a moving contact and a stationary contact are respectively connected.

[0006] As a preferred embodiment of this utility model, the buffer assembly includes a limiting slide rail, two sets of which are respectively located on the inner wall of the mounting groove. A buffer base is slidably connected to the inner wall of the limiting slide rail. A pull groove is formed on the outer wall of the buffer base. A fixing groove is formed on the inner wall of the buffer base. A positioning post is inserted and installed on the inner wall of the fixing groove. A buffer spring is provided on one side of the positioning post and on the inner wall of the fixing groove.

[0007] As a preferred embodiment of this utility model, a buffer pad is installed at one end of the buffer spring, wherein the buffer pad is located directly below the plunger. A limiting sleeve is embedded in the outer wall of the buffer pad, and two sets of the limiting sleeve are provided and located on the outer wall of the buffer pad respectively. A limiting post is slidably connected to the inner wall of the limiting sleeve, wherein one end of the limiting post is inserted and pulled into the inner wall of the buffer base, and two sets of the limiting post are provided and located on the inner wall of the buffer base respectively.

[0008] As a preferred embodiment of this utility model, the cleaning component includes a limiting plate, which is embedded in the inner wall opposite to the switch base. An absorbent cotton block is embedded in the outer wall of the limiting plate, and one end of the limiting plate passes through the switch base and extends to the outer wall of the switch base where a fixing seat is installed.

[0009] As a preferred embodiment of this utility model, one end of the absorbent cotton block extends into the inner cavity of the fixed base, a sealing rubber plate is inserted and installed at the port of the fixed base, the limiting plate is located between the moving contact and the stationary contact, and the limiting plate is located on one side of the stationary contact.

[0010] As a preferred embodiment of this utility model, a limiting slider is slidably connected to the outer wall of the limiting plate, a friction plate is installed on the side wall of the limiting slider, and a water-absorbing slide plate is installed on one side of the friction plate and on the outer wall of the limiting slider. One end of the water-absorbing slide plate passes through the limiting slider and extends to the inner wall of the limiting slider, and one end of the water-absorbing slide plate is attached to the outer wall of the water-absorbing cotton block.

[0011] As a preferred embodiment of this utility model, a limiting block is installed at one end of the water-absorbing slide plate. The limiting block is slidably connected to the inner wall of the limiting groove, and a sealing block is inserted and removed from one side of the limiting block and located on the inner wall of the limiting groove.

[0012] As a preferred embodiment of this utility model, the outer wall surface of the buffer base and the outer wall surface of the switch base are flush with each other, the friction plate and the water-absorbing slide plate are both located on one side of the stationary contact, and the sealing rubber plate and the sealing rubber block are both made of rubber material.

[0013] Compared with existing technologies, this utility model achieves buffering of the plunger component by setting a buffer component in a tactile switch with buffer protection function. By inserting the buffer base into the inner cavity of the switch base through the limiting slide rail, the buffer base moves the buffer pad directly below the plunger component through the limiting post. When the plunger component is pressed by the outside, it will contact the buffer pad, causing the buffer pad to drive the limiting sleeve to slide longitudinally on the outer wall of the limiting post. At the same time, the buffer pad will compress the buffer spring. Under the elastic deformation of the buffer spring, the plunger component is buffered, and then the plunger component moves down at a uniform speed to compress the reaction spring, causing the reaction spring to press down the moving contact to move. This allows the moving contact to contact the stationary contact and form a passage, thereby solving the problem that the tactile switch does not have a buffering function. When repeatedly pressed with great force for a long time, the internal metal spring will gradually lose its elasticity, eventually failing to reset or breaking, shortening the switch life.

[0014] This invention removes the oxide layer from the contacts by incorporating a cleaning component within a tactile switch with buffer protection. By removing the sealing plate and block, and then pulling the limiting block, the limiting block moves laterally along the inner wall of the limiting groove. This causes the limiting block to reciprocate laterally with the friction plate and the absorbent slide plate, allowing the friction plate to rub against the moving and stationary contacts, thus removing the oxide layer. Alternatively, alcohol can be injected into the cavity of the mounting base, soaking the absorbent cotton block. The alcohol then soaks the absorbent slide plate. When the limiting block moves the friction plate and absorbent slide plate laterally, the alcohol on the absorbent slide plate comes into contact with the oxide layer of the moving and stationary contacts, resulting in a better removal effect on the oxide layer between the moving and stationary contacts. Furthermore, the alcohol evaporates quickly, avoiding the risk of residual conductivity. This solves the problem of the tactile switch's spring contacts easily oxidizing, forming an insulating oxide layer, leading to increased contact resistance or even open circuits. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the sealing block structure of this utility model; Figure 3 This is a cross-sectional structural diagram of the switch base of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the reaction spring of this utility model; Figure 5 This utility model Figure 3 Enlarged schematic diagram of the structure at point A; Figure 6 This utility model Figure 3 Enlarged schematic diagram of the structure at point B.

[0016] In the diagram: 1. Switch base; 2. Mounting slot; 3. Buffer assembly; 301. Limit slide rail; 302. Buffer base; 303. Pull groove; 304. Fixing groove; 305. Positioning post; 306. Buffer spring; 307. Buffer pad; 308. Limit sleeve; 309. Limit post; 4. Limit slide groove; 5. Cleaning assembly; 501. Limit plate; 502. Absorbent cotton block; 503. Fixing seat; 504. Sealing rubber plate; 505. Limit slider; 506. Friction plate; 507. Absorbent slide plate; 508. Limit block; 509. Sealing rubber block; 6. Fixing buckle; 7. Switch top cover; 8. Plunger; 9. Reaction spring; 10. Moving contact; 11. Stationary contact; 12. Contact terminal. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] Example: Please refer to Figure 1-6 The tactile switch shown includes a switch base 1, an installation groove 2 on the opposite outer wall of the switch base 1, a buffer component 3 installed on the inner wall of the installation groove 2, a limit slide groove 4 on the outer wall of the switch base 1, a cleaning component 5 installed on one side of the limit slide groove 4 on the inner wall of the switch base 1, a fixing buckle 6 on the opposite outer wall of the switch base 1, a switch cover 7 installed on the outer wall of the fixing buckle 6, a plunger 8 slidably connected to the outer wall of the switch cover 7, a reaction spring 9 installed directly below the plunger 8 on the inner wall of the switch base 1, a moving contact 10 installed directly below the reaction spring 9 on the inner wall of the switch base 1, and a stationary contact 11 installed on one side of the moving contact 10 on the inner wall of the switch base 1. The switch base 1 has symmetrically arranged contact terminals 12 on opposite outer walls. One end of each contact terminal 12 passes through the switch base 1 and extends to the inner wall of the switch base 1, where a moving contact 10 and a stationary contact 11 are respectively connected.

[0019] In this embodiment, specific references Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The buffer assembly 3 includes a limiting slide rail 301, with two sets of limiting slide rails 301 located on the inner wall of the mounting groove 2. A buffer base 302 is slidably connected to the inner wall of the limiting slide rail 301. A pull groove 303 is formed on the outer wall of the buffer base 302, and a fixing groove 304 is formed on the inner wall of the buffer base 302. A positioning post 305 is inserted and removed from the inner wall of the fixing groove 304. A buffer spring 306 is provided on one side of the positioning post 305 and on the inner wall of the fixing groove 304. A buffer pad 307 is installed at one end of the plunger 8. The buffer pad 307 is located directly below the plunger 8. A limiting sleeve 308 is embedded in the outer wall of the buffer pad 307. Two sets of limiting sleeves 308 are provided and are located on the outer wall of the buffer pad 307 respectively. A limiting post 309 is slidably connected to the inner wall of the limiting sleeve 308. One end of the limiting post 309 is inserted and pulled into the inner wall of the buffer base 302. Two sets of limiting posts 309 are provided and are located on the inner wall of the buffer base 302 respectively.

[0020] Based on the above structural features and connection relationships, the limiting slide rail 301 is provided with two sets, which are respectively located on the inner wall of the mounting groove 2. The buffer base 302 is slidably connected to the inner wall of the limiting slide rail 301. With the pull groove 303 opened on the outer wall of the buffer base 302, the buffer base 302 can be pulled out through the pull groove 303, so as to replace and maintain the buffer spring 306, which is more practical. In this embodiment, specific references Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 The cleaning component 5 includes a limiting plate 501, which is embedded in the inner wall of the switch base 1. An absorbent cotton block 502 is embedded in the outer wall of the limiting plate 501. One end of the limiting plate 501 penetrates the switch base 1 and extends to a fixing seat 503 mounted on the outer wall of the switch base 1. One end of the absorbent cotton block 502 extends into the inner cavity of the fixing seat 503. A sealing adhesive plate 504 is inserted and removed from the port of the fixing seat 503. The limiting plate 501 is located between the moving contact 10 and the stationary contact 11, and is located on one side of the stationary contact 11. A sliding connection is made to the outer wall of the limiting plate 501. A limiting slider 505 is provided, and a friction plate 506 is installed on the side wall of the limiting slider 505. A water-absorbing slide plate 507 is installed on one side of the friction plate 506 and on the outer wall of the limiting slider 505. One end of the water-absorbing slide plate 507 passes through the limiting slider 505 and extends to the inner wall of the limiting slider 505. The other end of the water-absorbing slide plate 507 is attached to the outer wall of the water-absorbing cotton block 502. A limiting block 508 is installed on one end of the water-absorbing slide plate 507. The limiting block 508 is slidably connected to the inner wall of the limiting groove 4. A sealing block 509 is inserted and removed from one side of the limiting block 508 and on the inner wall of the limiting groove 4.

[0021] Among them, the outer wall surface of the buffer base 302 and the outer wall surface of the switch base 1 are flush with each other. The friction plate 506 and the water-absorbing slide plate 507 are both located on one side of the stationary contact 11. The sealing rubber plate 504 and the sealing rubber block 509 are both made of rubber material, so as to make the sealing effect better.

[0022] This solution features a tactile switch with a buffer protection function. During operation, the buffer base 302 is inserted into the inner cavity of the switch base 1 via the limiting slide rail 301. This causes the buffer base 302 to move via the limiting post 309, moving the buffer pad 307 directly below the plunger 8. When the plunger 8 is pressed by an external force, it contacts the buffer pad 307, causing the buffer pad 307 to slide longitudinally against the outer wall of the limiting post 309. Simultaneously, the buffer pad 307... 07. The buffer spring 306 is compressed. Under the elastic deformation of the buffer spring 306, the plunger 8 is buffered, and the plunger 8 moves down at a constant speed to compress the reaction spring 9. The reaction spring 9 presses down on the moving contact 10, which makes the moving contact 10 contact the stationary contact 11 to form a circuit. This solves the problem that the tactile switch does not have a buffering function. When it is pressed hard repeatedly for a long time, the internal metal spring will gradually lose its elasticity and eventually fail to reset or break, shortening the life of the switch. By removing the sealing plate 504 and sealing block 509, and then pulling the limiting block 508, the limiting block 508 will move laterally on the inner wall of the limiting groove 4. This will cause the limiting block 508 to drive the friction plate 506 and the water-absorbing slide plate 507 to move back and forth laterally, thereby causing the friction plate 506 to rub against the moving contact 10 and the stationary contact 11, thus polishing away the oxide layer of the moving contact 10 and the stationary contact 11. Alternatively, alcohol can be injected into the inner cavity of the fixing seat 503, which will cause the alcohol to soak the water-absorbing cotton block 502, and then the water-absorbing cotton block... The alcohol in 502 soaks into the water-absorbing slide plate 507. When the limit block 508 drives the friction plate 506 and the water-absorbing slide plate 507 to move back and forth laterally, the alcohol in the water-absorbing slide plate 507 will also come into contact with the oxide layer of the stationary contact 11 and react with the moving contact 10. This has a better effect on removing the oxide layer of the moving contact 10 coming into contact with the stationary contact 11, and the alcohol can evaporate quickly to avoid the risk of residual conductivity. This solves the problem that the spring of the tactile switch is prone to oxidation, forming an insulating oxide layer, which leads to increased contact resistance or even open circuit.

[0023] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tactile switch with buffer protection function, comprising a switch base (1), characterized in that: The switch base (1) has an installation groove (2) on its opposite outer wall. A buffer component (3) is installed on the inner wall of the installation groove (2). A limit slide groove (4) is provided on the outer wall of the switch base (1). A cleaning component (5) is installed on one side of the limit slide groove (4) on the inner wall of the switch base (1). A fixing buckle (6) is provided on the opposite outer wall of the switch base (1). A switch cover (7) is installed on the outer wall of the fixing buckle (6). A plunger (8) is slidably connected on the outer wall of the switch cover (7). A reaction spring (9) is installed directly below the plunger (8) and on the inner wall of the switch base (1). A moving contact (10) is installed directly below the reaction spring (9) and on the inner wall of the switch base (1). A stationary contact (11) is installed on one side of the moving contact (10) and on the inner wall of the switch base (1). The switch base (1) has symmetrically arranged contact terminals (12) on its opposite outer walls. One end of each contact terminal (12) passes through the switch base (1) and extends to the inner wall of the switch base (1), where a moving contact (10) and a stationary contact (11) are respectively connected.

2. A tactile switch with buffer protection function according to claim 1, characterized in that: The buffer assembly (3) includes a limiting slide rail (301), which has two sets and is located on the inner wall of the mounting groove (2). A buffer base (302) is slidably connected to the inner wall of the limiting slide rail (301). A pull groove (303) is provided on the outer wall of the buffer base (302). A fixing groove (304) is provided on the inner wall of the buffer base (302). A positioning post (305) is inserted and installed on the inner wall of the fixing groove (304). A buffer spring (306) is provided on one side of the positioning post (305) and on the inner wall of the fixing groove (304).

3. A tactile switch with buffer protection function according to claim 2, characterized in that: A buffer pad (307) is installed at one end of the buffer spring (306), wherein the buffer pad (307) is located directly below the plunger (8). A limiting sleeve (308) is embedded in the outer wall of the buffer pad (307). Two sets of the limiting sleeve (308) are provided and are located on the outer wall of the buffer pad (307). A limiting post (309) is slidably connected to the inner wall of the limiting sleeve (308). One end of the limiting post (309) is inserted and pulled into the inner wall of the buffer base (302), and two sets of the limiting post (309) are provided and are located on the inner wall of the buffer base (302).

4. A tactile switch with buffer protection function according to claim 3, characterized in that: The cleaning component (5) includes a limiting plate (501), which is embedded in the inner wall opposite to the switch base (1). A water-absorbing cotton block (502) is embedded in the outer wall of the limiting plate (501). One end of the limiting plate (501) passes through the switch base (1) and extends to the outer wall of the switch base (1) where a fixing seat (503) is installed.

5. A tactile switch with buffer protection function according to claim 4, characterized in that: One end of the absorbent cotton block (502) extends into the inner cavity of the fixed seat (503). A sealing plate (504) is inserted and installed at the port of the fixed seat (503). The limiting plate (501) is located between the moving contact (10) and the stationary contact (11), and the limiting plate (501) is located on one side of the stationary contact (11).

6. A tactile switch with buffer protection function according to claim 5, characterized in that: A limiting slider (505) is slidably connected to the outer wall of the limiting plate (501). A friction plate (506) is installed on the side wall of the limiting slider (505). A water-absorbing plate (507) is installed on one side of the friction plate (506) and on the outer wall of the limiting slider (505). One end of the water-absorbing plate (507) passes through the limiting slider (505) and extends to the inner wall of the limiting slider (505). One end of the water-absorbing plate (507) is attached to the outer wall of the water-absorbing cotton block (502).

7. A tactile switch with buffer protection function according to claim 6, characterized in that: One end of the water-absorbing slide plate (507) is equipped with a limiting block (508), which is slidably connected to the inner wall of the limiting groove (4), and a sealing block (509) is inserted and removed on one side of the limiting block (508) and located on the inner wall of the limiting groove (4).

8. A tactile switch with buffer protection function according to claim 7, characterized in that: The outer wall surface of the buffer base (302) and the outer wall surface of the switch base (1) are flush with each other. The friction plate (506) and the water-absorbing slide plate (507) are both located on one side of the stationary contact (11). The sealing rubber plate (504) and the sealing rubber block (509) are both made of rubber.

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