Caped paster touch switch

Abstract

The utility model discloses a cap patch touch switch. Adopted technical scheme includes: pedestal, two wiring terminals in the interval mode are established in the pedestal, the metal spring piece that is established in the pedestal, the button and the end cover that are established in the metal spring piece top are covered in the pedestal end face, the metal spring piece both ends are closed with one of the wiring terminal, the button lower extreme is equipped with the press column that butts against the metal spring piece, and the upper end is equipped with the press cap through the annular clamping groove, the press cap bottom is equipped with a group of circumferential arrangement's clamping post, the clamping post inner wall is equipped with the clamping rib that is connected with the annular clamping groove.

Description

Technical Field

[0001] This utility model relates to the field of electronic components, and in particular to a tactile switch. Background Technology

[0002] A tactile switch, also called a push-button switch, uses the force applied to a metal spring (commonly known as a dome switch) to achieve on / off switching. Tactile switches offer advantages such as low contact resistance, precise operating force error, and diverse specifications, making them widely used in electronic devices and white goods. A traditional tactile switch structure includes: a base, two terminals spaced apart at the bottom of the base, a metal spring inside the base, a button on top of the metal spring, and an end cap covering the end face of the base. The two ends of the metal spring are normally closed to one of the terminals. Disadvantages include: 1. The button cannot be fitted with different pressing caps as needed, making production and use inconvenient; 2. The button applies direct pressure to the metal spring without a protective structure, making the metal spring susceptible to damage from excessive pressure. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a capped patch tactile switch.

[0004] To solve the above problems, the technical solution adopted by this utility model includes: a base, two terminals arranged at intervals in the base, a metal spring sheet arranged in the base, a button arranged above the metal spring sheet, and an end cap covering the end face of the base. The two ends of the metal spring sheet are normally closed to one of the terminals. The lower end of the button is provided with a pressing post that abuts against the metal spring sheet, and the upper end is engaged with a pressing cap through an annular groove. The bottom of the pressing cap is provided with a set of circumferentially arranged locking posts, and the inner wall of the locking posts is provided with locking ribs that engage with the annular groove.

[0005] The lower end of the pressing column is equipped with a spring, which applies pressure to the metal spring sheet.

[0006] The spring is a tower spring.

[0007] The button is conical and has a flange at the bottom that positions and engages with the end cap. The base has a positioning step that positions and engages with the flange.

[0008] The button has positioning wings on both sides at its lower end, and the base has positioning grooves on both sides that cooperate with the positioning wings.

[0009] The terminal block is disposed on the base by insert injection molding and has patch feet extending out of the base at both ends. The bottom of the base is provided with reinforcing ribs corresponding to the patch feet.

[0010] The advantages of this capped patch tactile switch are: 1. Different pressing caps can be set on the top of the button as needed, making production and use more convenient; 2. The spring applies pressure to the metal spring, forming a buffer when pressed, and a positioning step is provided to prevent excessive pressing, thereby effectively preventing damage to the metal spring. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 This is a schematic diagram of the structure of the capped patch tactile switch of this utility model; Figure 2 This is a cross-sectional view of the first embodiment of the capped patch tactile switch of this utility model; Figure 3 This is a cross-sectional view of the second embodiment of the capped patch tactile switch of this utility model; Figure 4 This is a structural schematic diagram of the button of this utility model; Figure 5 This is a schematic diagram of the structure of the press cap of this utility model. Detailed Implementation

[0013] like Figures 1 to 5 As shown, the capped patch tactile switch of this utility model includes a base 1, two terminals 2 spaced apart within the base 1, a metal spring 3 within the base 1, a button 4 above the metal spring 3, and an end cap 5 covering the end face of the base 1. The base 1 is connected to the end cap 5 via a set of riveting posts 19. The two ends of the metal spring 3 are normally closed to one of the terminals 2. The lower end of the button 4 has a pressing post 6 that abuts against the metal spring 3, and the upper end of the button 4 is secured with a pressing cap 9 via an annular groove 7. The bottom of the pressing cap 9 has a set of circumferentially arranged locking posts 10, and the inner wall of the locking posts 10 has locking ribs 11 that engage with the annular groove 7. During assembly, the locking ribs 11 of the pressing cap 9 are forcibly pressed into the annular groove 7 at the upper end of the button 4. During disassembly, the pressing cap 9 is pulled out forcefully.

[0014] Preferably, a spring 12 is provided at the lower end of the pressing column 6, and the spring 12 applies pressure to the metal spring 3. The spring 12 is a tower spring to improve the stability of pressing and the uniformity of force distribution.

[0015] Preferably, the button 4 is tapered, and its bottom has a flange 13 that positions and engages with the end cap 5. The base 1 has a positioning step 14 that positions and engages with the flange 13. When the button 4 is pressed into place, the lower end of the flange 13 abuts against the positioning step 14 to prevent excessive pressing. Furthermore, the tapered shape of the button 4 allows for a tighter fit with the end cap 5 after resetting, thus improving sealing performance.

[0016] Preferably, the button 4 has positioning wings 15 on both sides of its lower end, and the base 1 has positioning grooves 16 on both sides that are positioned and engaged with the positioning wings 15. This prevents the button 4 from rotating, thereby improving the stability of pressing.

[0017] Preferably, the terminal block 2 is disposed on the base 1 by insert injection molding, and has surface mount feet 17 extending out of the base 1 at both ends, which can be directly surface-mounted and soldered to the PCB board. The base 1 has reinforcing ribs 18 at the bottom corresponding to the surface mount feet 17 to improve the strength and height resistance of the base 1.

[0018] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model are included within the protection scope of the present utility model.

Claims

1. A capped patch tactile switch, comprising a base (1), two terminals (2) spaced apart within the base (1), a metal spring (3) within the base (1), a button (4) above the metal spring (3), and an end cap (5) covering the end face of the base (1), wherein both ends of the metal spring (3) are normally closed to one of the terminals (2), characterized in that: The button (4) has a pressing post (6) at the lower end that abuts against the metal spring (3), and a pressing cap (9) at the upper end that is engaged through an annular groove (7). The bottom of the pressing cap (9) has a set of circumferentially arranged locking posts (10), and the inner wall of the locking post (10) has locking ribs (11) that engage with the annular groove (7).

2. The capped patch tactile switch according to claim 1, characterized in that: The lower end of the pressing column (6) is provided with a spring (12), which applies pressure to the metal spring (3).

3. The capped patch tactile switch according to claim 2, characterized in that: The spring (12) is a tower spring.

4. The capped patch tactile switch according to claim 2, characterized in that: The button (4) is conical and has a flange (13) at the bottom that is positioned and engaged with the end cap (5). The base (1) has a positioning step (14) that is positioned and engaged with the flange (13).

5. The capped patch tactile switch according to claim 1, characterized in that: The button (4) has positioning wings (15) on both sides of its lower end, and the base (1) has positioning grooves (16) on both sides that are positioned and cooperate with the positioning wings (15).

6. The capped patch tactile switch according to claim 1, characterized in that: The terminal block (2) is installed on the base (1) by insert injection molding and has patch feet (17) extending out of the base (1) at both ends. The base (1) has reinforcing ribs (18) at the bottom corresponding to the patch feet (17).

Images