CN218215023U

CN218215023U - Push-button switch

Info

Publication number: CN218215023U
Application number: CN202222444700.2U
Authority: CN
Inventors: 杨沛林
Original assignee: Foshan Shunde Yimingda Electric Co ltd
Current assignee: Foshan Shunde Yimingda Electric Co ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2023-01-03
Anticipated expiration: 2032-09-15

Abstract

The utility model discloses a key switch, including shell and the activity button subassembly that sets up on the shell, be equipped with first binding post on the shell, second binding post and third binding post, first binding post is equipped with first stationary contact in the shell, second binding post is equipped with the second stationary contact in the shell, be insulating clearance between first stationary contact and the second stationary contact, third binding post's movable contact is arranging insulating clearance in, can drive the movable contact according to the button subassembly and remove, make movable contact and first stationary contact or second stationary contact counterbalance. First binding post or second binding post and third binding post are connected in a strip circuit, perhaps first binding post and third binding post, second binding post and third binding post respectively connect a circuit, and the key switch function no longer single enlarges its application range.

Description

Push-button switch

Technical Field

The utility model relates to a key switch.

Background

Chinese patent CN212967482U discloses a key switch, which includes a housing, a key assembly, and a conductive trigger; the trigger piece is in linear moving connection with the shell; the shell is fixedly provided with at least two electric connecting pieces with electric conductivity; each power connection piece is superposed with the trigger piece when viewed from top; the key assembly is arranged on the shell and connected with the trigger piece, and the key assembly can drive the trigger piece to move linearly so that the trigger piece and each power connection piece are synchronously disconnected or abutted. The key switch can only control a single circuit and only control the circuit to be powered on or powered off, and has single function and limited application range.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a control at least one circuit, application range wider key switch.

The purpose of the utility model is realized like this.

Key switch, including shell and the movable button subassembly that sets up on the shell, be equipped with first binding post on the shell, second binding post and third binding post, first binding post is equipped with first stationary contact in the shell, second binding post is equipped with the second stationary contact in the shell, be insulating clearance between first stationary contact and the second stationary contact, third binding post's movable contact is arranging insulating clearance in, button subassembly can drive the movable contact and remove, make movable contact and first stationary contact or second stationary contact counterbalance. The first wiring terminal or the second wiring terminal and the third wiring terminal are connected in a single circuit, or the first wiring terminal and the third wiring terminal, the second wiring terminal and the third wiring terminal are respectively connected with a circuit, the function of the key switch is not single, and the application range of the key switch is enlarged.

The technical scheme can be further perfected as follows.

More specific scheme, third binding post is including the fixed part that extends the shell and the movable part that sets up in the shell, and movable part one end and fixed part offset, and key assembly drives the movable part other end and removes, and the movable part other end removes and is equipped with the movable contact. The split design that the fixed part is fixed, the movable part removes does not influence the fixed part wiring, avoids the third binding post to break because of metal fatigue.

More specifically, the fixed part top is equipped with the separation blade, is equipped with the jack on the separation blade, and movable part one end is equipped with the inserted block, is equipped with first spring in the shell, and the inserted block inserts the jack, and first spring makes movable part and separation blade bottom surface keep offsetting. One end of the movable part is fixed relative to the fixed part to keep abutting against the fixed part, so that the other end of the movable part can move conveniently.

More specifically, the blocking piece is bent from the top of the fixing part, and the fixing part and the blocking piece are in a shape like the Chinese character 'ji', so that the movable part and the blocking piece can be kept against each other conveniently.

More specifically, the arc portion has been buckled to the separation blade to activity portion one end, and arc portion top extends the inserted block. The movable part is easy to manufacture and is kept against the blocking piece through the arc-shaped part.

More specifically, the first fixed contact and the second fixed contact are overlapped in the vertical direction, the first fixed contact is positioned above the second fixed contact, a second spring is arranged between the movable part and the shell, and the second spring enables the movable contact of the movable part to be abutted against the first fixed contact. The first terminal is held in communication with a terminal.

More specifically, the button assembly comprises a button, a rotor and a third spring, the rotor is matched with the shell through a ratchet structure, the bottom of the third spring is arranged on the movable portion, the third spring supports the button through the rotor, the button is pressed down, the rotor and the third spring move downwards and press the movable portion downwards, the movable contact of the movable portion is enabled to be abutted against the second stationary contact, and the third spring enables the button to reset. The odd number press button, the moving contact and a static contact are pressed against each other, and the even number press button, the moving contact and another static contact are pressed against each other.

More specifically, the movable portion is provided with a positioning hole and a sleeve inserted into the positioning hole, the top of the sleeve is closed, the bottom of the sleeve is open, a convex edge is arranged at the bottom of the sleeve, the top of the second spring is inserted into the sleeve from the bottom of the sleeve and abuts against the top of the sleeve, the convex edge abuts against the bottom surface of the movable portion, and the bottom of the third spring is sleeved on the sleeve and abuts against the top surface of the movable portion. The sleeve simultaneously positions the second spring and the third spring, so that the second spring and the third spring are prevented from offsetting to cause the failure of the key switch, and the key switch is convenient to assemble.

The utility model discloses beneficial effect as follows.

(1) The first wiring terminal or the second wiring terminal and the third wiring terminal are connected in a single circuit, or the first wiring terminal and the third wiring terminal, the second wiring terminal and the third wiring terminal are respectively connected with a circuit, the function of the key switch is not single, and the application range of the key switch is enlarged.

(2) Secondly, the fixed part is fixed, the components of a whole that can function independently design that the movable part removed does not influence the fixed part wiring, avoids third binding post because of the metal fatigue rupture. One end of the movable part is fixed relative to the fixed part to keep abutting against the fixed part, so that the other end of the movable part can move conveniently. The fixed part and the movable part are respectively integrally formed, so that the manufacturing is convenient.

(3) Moreover, the sleeve simultaneously positions the second spring and the third spring, so that the second spring and the third spring are prevented from offsetting to cause the failure of the key switch, and the key switch is convenient to assemble.

Drawings

Fig. 1 is a schematic structural diagram of the first embodiment.

Fig. 2 is an exploded schematic view of the first embodiment.

Fig. 3 is a schematic cross-sectional structure diagram of the first embodiment.

Fig. 4 is another schematic cross-sectional view of the first embodiment.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

In a first embodiment, referring to fig. 1 to 4, a key switch includes a housing 1 and a key assembly 9 movably disposed on the housing 1, the housing 1 is provided with a first connection terminal 2, a second connection terminal 3 and a third connection terminal 4, the first connection terminal 2 is provided with a first stationary contact 21 in the housing 1, the second connection terminal 3 is provided with a second stationary contact 31 in the housing 1, and an insulation gap 10 is disposed between the first stationary contact 21 and the second stationary contact 31.

In this embodiment, the third connection terminal 4 includes a fixed portion 5 extending out of the housing 1 and a movable portion 6 disposed in the housing 1, one end of the movable portion 6 abuts against the fixed portion 5, the key assembly 9 drives the other end of the movable portion 6 to move, the other end of the movable portion 6 is movably provided with a movable contact 61, and the movable contact 61 of the third connection terminal 4 is disposed in the insulation gap 10. Specifically, a blocking piece 51 is bent at the top of the fixing part 5, the fixing part 5 and the blocking piece 51 are in a 7 shape, and an insertion hole 52 is formed in the blocking piece 51. One end of the movable part 6 is bent towards the blocking piece 51 to form an arc-shaped part 62, and the top of the arc-shaped part 62 extends out of an insertion block 63. The insertion block 63 is inserted into the insertion hole 52, and the first spring 41 is provided between the arc portion 62 of the movable portion 6 and the housing 1, and the movable portion 6 is held against the bottom surface of the stopper piece 51 by the first spring 41.

The first stationary contact 21 and the second stationary contact 31 coincide in the vertical direction, and the first stationary contact 21 is located above the second stationary contact 31. A second spring 7 is provided between the movable part 6 and the housing 1, and the second spring 7 causes the movable contact 61 of the movable part 6 to abut against the first stationary contact 21. Specifically, the movable portion 6 is provided with a positioning hole 60 and a sleeve 8 inserted into the positioning hole 60, the top of the sleeve 8 is closed, the bottom of the sleeve 8 is open, the bottom of the sleeve 8 is provided with a convex edge 81, and the top of the second spring 7 is inserted into the sleeve 8 from the bottom of the sleeve 8 and abuts against the top of the sleeve 8, so that the convex edge 81 abuts against the bottom surface of the movable portion 6. Corresponding positioning structures, such as positioning columns or positioning grooves, can be arranged in the housing 1 corresponding to the bottoms of the first spring 41 and the second spring 7, as shown in fig. 3, the bottom of the first spring 41 is located in the positioning groove, and the bottom of the second spring 7 is sleeved on the positioning columns.

The key assembly 9 includes a button 91, a rotor 92 and a third spring 93, the rotor 92 and the housing 1 are matched through a ratchet structure, the bottom of the third spring 93 is sleeved on the sleeve 8 and abuts against the top surface of the movable portion 6, the third spring 93 supports the button 91 through the rotor 92, the button 91 is pressed down, the rotor 92 and the third spring 93 move down and press the movable portion 6 down, so that the movable contact 61 of the movable portion 6 abuts against the second stationary contact 31, and the third spring 93 resets the button 91. The matching structure among the button 91, the rotor 92 and the housing 1 is disclosed in the patent CN212967482U of the applicant, and is not described in detail here.

The first wiring terminal 2, the second wiring terminal 3 and the third wiring terminal 4 are all connected in a circuit, the movable contact 61 is abutted against the first fixed contact 21, and the first wiring terminal 2 and the third wiring terminal 4 are communicated and conduct electricity. When the button 91 is pressed, the rotor 92 moves downwards, rotates and compresses the third spring 93 and the second spring 7, the movable contact 61 is separated from contact with the first fixed contact 21, the movable contact 61 moves to abut against the second fixed contact 31, the button 91 is released, the third spring 93 pushes the button 91 to reset, the rotor 92 abuts against the shell 1, at the moment, the movable contact 61 moves to abut against the second fixed contact 31, and the second wiring terminal 3 is communicated with the third wiring terminal 4 for conducting electricity. When the button 91 is pressed again, the rotor 92 moves downwards and rotates, the third spring 93 pushes the button 91 to reset, the rotor 92 is abutted against the shell 1, the second spring 7 pushes the movable part 6 to move upwards, the movable contact 61 moves to be separated from the second static contact, and the movable contact 61 is abutted against the first static contact 21. The process is repeated, and the button 91 is pressed for the odd number of times, the movable contact 61 abuts against one fixed contact, and the button 91 is pressed for the even number of times, the movable contact 61 abuts against the other fixed contact.

In another embodiment, the third terminals 4 are connected to the circuit, and the first terminal 2 or the second terminal 3 is connected to the circuit, so that the key switch can be used for powering on and powering off the circuit by pressing the button 91.

Claims

1. Key switch, including shell (1) and activity setting button subassembly (9) on shell (1), characterized by, be equipped with first binding post (2) on shell (1), second binding post (3) and third binding post (4), first binding post (2) are equipped with first stationary contact (21) in shell (1), second binding post (3) are equipped with second stationary contact (31) in shell (1), be insulating clearance (10) between first stationary contact (21) and second stationary contact (31), movable contact (61) of third binding post (4) are arranging insulating clearance (10) in, button subassembly (9) can drive movable contact (61) and remove, movable contact (61) offset with first stationary contact (21) or second stationary contact (31).

2. A push-button switch according to claim 1, characterized in that the third connection terminal (4) comprises a fixed part (5) extending out of the housing (1) and a movable part (6) arranged inside the housing (1), one end of the movable part (6) abutting against the fixed part (5), the push-button assembly (9) moving the other end of the movable part (6), the other end of the movable part (6) being provided with said movable contact (61) in a movable manner.

3. The push button switch according to claim 2, wherein a stopper (51) is provided on the top of the fixed portion (5), a plug hole (52) is provided on the stopper (51), an insertion block (63) is provided at one end of the movable portion (6), a first spring (41) is provided in the housing (1), the insertion block (63) is inserted into the plug hole (52), and the first spring (41) keeps the movable portion (6) against the bottom surface of the stopper (51).

4. A push button switch according to claim 3, characterised in that the stop (51) is bent at the top of the fixing portion (5), the fixing portion (5) and the stop (51) being of a "7" shape.

5. A push-button switch according to claim 3, wherein the movable portion (6) has an arcuate portion (62) bent toward the stopper (51) at one end thereof, the arcuate portion (62) having a top portion extending beyond the insert (63).

6. A push-button switch according to claim 2, characterized in that the first stationary contact (21) and the second stationary contact (31) coincide in the vertical direction, the first stationary contact (21) being located above the second stationary contact (31), a second spring (7) being arranged between the movable part (6) and the housing (1), the second spring (7) urging the movable contact (61) of the movable part (6) against the first stationary contact (21).

7. The push switch according to claim 6, wherein the push button assembly (9) comprises a push button (91), a rotor (92) and a third spring (93), the rotor (92) and the housing (1) are engaged by a ratchet mechanism, the bottom of the third spring (93) is disposed on the movable portion (6), the third spring (93) supports the push button (91) through the rotor (92), the push button (91) is pressed, the rotor (92) and the third spring (93) move downward and press the movable portion (6) to make the movable contact (61) of the movable portion (6) abut against the second stationary contact (31), and the third spring (93) resets the push button (91).

8. The push-button switch according to claim 7, wherein the movable portion (6) has a positioning hole (60) and a sleeve (8) inserted into the positioning hole (60), the sleeve (8) has a closed top and an open bottom, the sleeve (8) has a protruding edge (81) at the bottom, the top of the second spring (7) is inserted into the sleeve (8) from the bottom of the sleeve (8) and abuts against the top of the sleeve (8) to abut the protruding edge (81) against the bottom surface of the movable portion (6), and the bottom of the third spring (93) is fitted over the sleeve (8) and abuts against the top surface of the movable portion (6).