Touch switch

Abstract

The touch switch comprises a base, a clamping piece contained in the base, a reed, a dustproof film and a button, the bottom of the base is provided with a plurality of detachable limiting columns and a connecting groove used for being connected with the limiting columns, the top of each limiting column is provided with an inserting block matched with the connecting groove, and the inserting blocks are connected with the limiting columns. The limiting column is of a cylindrical structure, an inwards-sunken clamping groove is formed in the middle of the limiting column, and a limiting rubber ring is arranged in the middle of the limiting column through the clamping groove. According to the base, the connecting groove is formed in the bottom and matched with the inserting block at the top of the limiting column for split type connection, even if breakage occurs, cleaning can be conducted in time, the limiting column can be replaced for normal welding, and compared with an integrated limiting column in the prior art, the base is more reliable.

Description

Technical Field

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

[0002] In the present technology, tactile switches are usually soldered onto PCB circuit boards. To simplify the soldering process, a positioning pin is usually provided at the bottom of the base for easy positioning. However, the positioning pin and the base are usually an integral structure. If the positioning pin breaks, it cannot be used properly. Moreover, the positioning pin is prone to retraction, which makes it difficult to perform the soldering work in a position, thus causing inconvenience. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To solve the above problems, this utility model proposes a tactile switch with a simple structure, replaceable limit post, and anti-reverse function of the limit post.

[0005] (II) Technical Solution

[0006] This utility model discloses a tactile switch, the tactile switch comprising:

[0007] Base;

[0008] A button is located within the base;

[0009] The card is installed inside the base;

[0010] A spring is fixedly mounted on the top of the card.

[0011] A dustproof film is provided on the card, and the dustproof film is located between the spring and the button to isolate dust and water mist in the air;

[0012] The base is detachably provided with at least three triangularly distributed limiting posts and a connecting groove for connecting the limiting posts. The limiting posts are inserted into the connecting groove for positioning and soldering when the tactile switch is installed into the circuit board.

[0013] In this utility model, the top of the limiting post is provided with a plug that matches the connecting groove, the middle of the limiting post is provided with an inwardly recessed slot, and the middle of the limiting post is provided with a limiting rubber ring through the slot to prevent the tactile switch from disengaging and loosening when it is not welded.

[0014] In this invention, the insert block has a wedge-shaped structure, the connecting groove has the same shape as the insert block, and the insert block is made of polymer plastic.

[0015] In this invention, the dustproof film includes a film body and a support leg. The support leg and the clip are arranged perpendicularly to each other to support the film body and form a cavity for accommodating the spring sheet.

[0016] In this invention, the dustproof film is made of polyimide.

[0017] In this utility model, the number of limiting posts is three, and the ends of the limiting posts are provided with inclined portions for easy insertion.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] (1) The base of this utility model is connected in a split manner by setting a connecting groove at the bottom and using the insert block at the top of the limiting post. Even if a break occurs, the limiting post can be cleaned and replaced in time for normal welding. This is more reliable than the integrated limiting post in the prior art.

[0021] (2) The limiting post in this utility model has a limiting rubber ring in the middle through the slot, which effectively increases the friction and connection strength between the connection hole of the PCB board and the limiting post, and effectively prevents it from retracting after insertion. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the main structure of the tactile switch in Example 1.

[0024] Figure 2 This is a cross-sectional view of the tactile switch in Example 1.

[0025] 10. Base, 20. Spring, 30. Cover plate, 40. Clip, 50. Button, 60. Limiting post, 70. Connecting groove, 80. Insert block, 90. Slot, 100. Limiting rubber ring, 110. Inclined part, 120. Dustproof film. Detailed Implementation

[0026] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Example 1

[0028] The tactile switch of the present invention mainly includes the following components: a base 10, a spring 20, a cover plate (not directly labeled in the figure, but can be understood as a component that cooperates with the base to form a closed structure), a locking element 40, a button 50, a limiting post 60, a connecting groove 70, a plug 80, a locking slot 90, a limiting rubber ring 100, and a dustproof film 120. These components work together to achieve reliable operation and protection of the switch.

[0029] Base 10: As the basic support structure for the entire tactile switch, base 10 is designed to accommodate other components and ensure that each part can be precisely assembled. The bottom of the base is designed with a structure for mounting and fixing.

[0030] Reed 20: Reed 20 is fixedly mounted on the top of the clip 40 and is a key component for achieving electrical connection of the switch. When the button 50 is pressed, the reed deforms, thus switching the circuit on or off.

[0031] Clip 40: Clip 40 is located within the base 10 and is used to fix the spring 20 and provide a mounting platform for the dustproof film 120. The design of the clip ensures the stable position of the spring and the dustproof film.

[0032] Button 50: Button 50 is located inside the base 10. The user can activate the reed by operating the button to control the switching state of the circuit.

[0033] Limiting posts 60 and connecting grooves 70: The bottom of the base 10 is provided with three limiting posts 60 arranged in a triangle, and each limiting post is designed with a connecting groove 70 at its bottom. This design not only enhances the stability of the switch when installed on the circuit board, but also facilitates precise positioning and soldering. The end of the limiting post 60 is provided with an inclined part 110, which facilitates insertion into the reserved hole of the circuit board.

[0034] Insert 80 and slot 90: The top of the limiting post 60 is equipped with a wedge-shaped insert 80, which matches the shape of the connecting slot 70 to ensure a firm connection between the limiting post and the connecting slot. The insert 80 is made of high-polymer plastic, which ensures sufficient strength and has a certain degree of elasticity for easy installation. The middle of the limiting post 60 is equipped with a slot 90 for installing the limiting rubber ring 100.

[0035] Limiting rubber ring 100: The limiting rubber ring 100 is installed in the slot 90, which effectively prevents the tactile switch from being dislodged and loosened due to external force when it is not soldered, thus improving the stability and reliability of the installation.

[0036] Dustproof membrane 120: The dustproof membrane 120 is made of polyimide material and has good dustproof and waterproof performance. It includes a membrane body and a support foot set perpendicular to the card 40. The support foot supports the membrane body and forms a cavity for accommodating the spring 20, effectively isolating dust and water mist in the air and protecting the inside of the switch from contamination.

[0037] During installation, first, fix the spring 20 onto the clip 40, then fix the feet of the dustproof film 120 to the corresponding positions of the clip 40, ensuring that the spring is covered and protected by the dustproof film. Next, place the assembled clip 40 and button 50 into the base 10, and install the limiting post 60. Utilize the cooperation between the insert 80 and the connecting groove 70, as well as the elastic fixation of the limiting rubber ring 100, to ensure the stability of the entire structure. Finally, insert the tactile switch into the reserved hole on the circuit board through the inclined part 110 of the limiting post 60 for positioning and soldering.

[0038] Through the above design, the tactile switch of this invention not only has excellent dustproof and waterproof performance, but also achieves rapid and accurate installation and positioning, improving production efficiency and product quality. At the same time, the use of the limiting rubber ring effectively prevents the problem of loosening or displacement before welding, ensuring the reliability and stability of the switch.

[0039] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A tactile switch, characterized in that, The tactile switch includes: Base; A button is located within the base; The card is installed inside the base; A spring is fixedly mounted on the top of the card. A dustproof film is provided on the card, and the dustproof film is located between the spring and the button to isolate dust and water mist in the air; The base is detachably provided with at least three triangularly distributed limiting posts and a connecting groove for connecting the limiting posts. The limiting posts are inserted into the connecting groove for positioning and soldering when the tactile switch is installed into the circuit board.

2. The tactile switch according to claim 1, characterized in that, The top of the limiting post is provided with a plug that matches the connecting groove, and the middle of the limiting post is provided with an inwardly recessed slot. A limiting rubber ring is provided in the middle of the limiting post through the slot to prevent the tactile switch from loosening when it is not soldered.

3. The tactile switch according to claim 2, characterized in that, The insert has a wedge-shaped structure, and the connecting groove has the same shape as the insert. The insert is made of polymer plastic.

4. The tactile switch according to claim 2 or 3, characterized in that, The dustproof membrane includes a membrane body and a support leg. The support leg is arranged perpendicularly to the clip and is used to support the membrane body and form a cavity for accommodating the spring.

5. The tactile switch according to claim 4, characterized in that, The dustproof film is made of polyimide.

6. The tactile switch according to claim 5, characterized in that, The number of limiting posts is three, and the ends of the limiting posts are provided with inclined portions for easy insertion.

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