Lock-free key switch
By designing the lock-free key switch of the T-shaped pin and the moving contact, the problem of poor contact stability between the contact plate and the pin is solved, and more stable contact is achieved and the occurrence of poor contact is reduced.
Patent Information
- Application Number
- CN202420633784.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-03-29
AI Technical Summary
In the existing lock-free key switches, the contact stability between the contact plate and the pin is poor, and there is a problem of poor contact.
By designing a T-shaped pin, static contacts are provided on both sides of the upper end of the pin, the middle is embedded in the concave inlay part in the case, the lower end is equipped with a wiring part extending out of the case, and a square frame-shaped inlay part embedded in the button and four integrated moving contacts are provided on the contact piece to achieve double-point contact between the contact piece and the pin.
Improves the contact stability between the contact sheet and the pin, reduces the occurrence of contact failure, and ensures stable on-off control of the circuit.
Smart Images
Figure CN222600805U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of switches, and in particular relates to a lock-free key switch. Background Art
[0002] The structure of the two-pin non-locking push button switch includes: a housing 1, two pins arranged on two sides of the housing 1, a button arranged in the housing and capable of sliding up and down, and a shell cover covering the upper end of the housing. A contact piece cooperating with the pin is arranged on the button, and a reset spring is arranged between the button and the housing. The contact piece and the pin are connected or disconnected by pressing the button, thereby realizing the on-off control of the circuit. The contact stability between the contact piece and the pin is poor, and poor contact is easy to occur. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a lock-free key switch with more stable contact between a contact sheet and a pin.
[0004] In order to solve the above problems, the technical solution adopted by the utility model includes: a shell, two pins arranged on two sides of the shell opposite to each other, a button arranged in the shell and slidable up and down, and a shell cover covering the upper end of the shell, the button is provided with a contact piece that cooperates with the pin for on and off, and a reset spring is provided between the button and the shell, characterized in that: the pin is T-shaped, and static contacts are provided on both sides of the upper end of the pin, a concave inlay portion embedded in the shell is provided in the middle, and a wiring portion extending out of the shell is provided at the lower end, the contact piece includes a square frame inlay portion embedded in the button and four moving contacts integrally formed at both ends of the square frame inlay portion that cooperate with the static contact for on and off.
[0005] The lock-free push button switch is characterized in that a bubble point is integrally formed on the moving contact.
[0006] The lock-free key switch is characterized in that positioning steps cooperating with the key are provided at the four corners of the inner cavity of the shell.
[0007] The lock-free key switch is characterized in that a groove is provided on the side of the key.
[0008] The lock-free push button switch is characterized in that the shell cover is connected to the hooks on both sides of the shell through buckles on both sides, and the shell cover is covered with a sheath.
[0009] The lock-free push button switch is characterized in that a clearance groove is provided at the upper end of the housing corresponding to the wiring portion.
[0010] The lock-free push button switch is characterized in that two positioning columns are integrally formed at the bottom of the shell.
[0011] The lock-free key switch of the utility model is as follows: through the improvement of the contact piece and the pin, they can be more stably fixed to the key and the housing respectively, and at the same time, double-point contact between the contact piece and the pin is achieved, and the contact is more stable.
[0012] The utility model is further described below in conjunction with the accompanying drawings of the specification. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the utility model non-locking key switch;
[0014] Figure 2 It is an exploded view of the lock-free key switch of the utility model;
[0015] Figure 3 It is a cross-sectional view of the lock-free push button switch of the utility model;
[0016] Figure 4 It is a structural schematic diagram of the pin of the utility model;
[0017] Figure 5 It is a structural schematic diagram of the contact piece of the utility model. DETAILED DESCRIPTION
[0018] Reference Figure 1-5 As shown, the non-locking key switch of the utility model comprises a housing 1, two pins 2 arranged on two sides of the housing 1 opposite to each other, a key 3 slidably arranged in the housing 1, and a shell cover 4 covering the upper end of the housing 1. The key 3 is provided with a contact piece 5 that cooperates with the pin 2 for on-off, and a reset spring 6 is provided between the key 3 and the housing 1. The pin 2 is T-shaped, and static contacts 7 are provided on both sides of the upper end of the pin 2. A concave inlay portion 8 embedded in the housing 1 is provided in the middle of the pin 2. A wiring portion 9 extending out of the housing 1 is provided at the lower end of the pin 2. The pin 2 is fixed in the housing 1 by insert injection molding. The contact piece 5 comprises a square frame-shaped inlay portion 10 embedded in the key 3 and four moving contacts 11 integrally formed at both ends of the square frame-shaped inlay portion 10 and cooperating with the static contacts 7 for on-off, and the contact piece 5 is fixed in the key 3 by insert injection molding.
[0019] Preferably, a bubble point 12 is integrally formed on the moving contact 11, and the moving contact 11 contacts the stationary contact 7 via the bubble point 12, so as to improve the contact stability.
[0020] Preferably, positioning steps 13 for positioning and cooperating with the button 3 are provided at four corners of the inner cavity of the shell 1 to improve the stability of assembly between the shell 1 and the button 3 .
[0021] Preferably, a groove 14 is provided on the side of the button 3 to reduce the contact surface with the housing 1, thereby reducing friction and making the button 3 smoother to press.
[0022] Preferably, the shell cover 4 is connected to the hooks 16 on both sides of the housing 1 through buckles 15 on both sides, and the shell cover 4 is covered with a sheath 17. The sheath 17 is wrapped around the shell cover 4 and the housing 1 to improve the stability of the connection between the two and improve the waterproof performance.
[0023] Preferably, the shell 1 is provided with a clearance groove 18 at the upper end corresponding to the wiring part 9. When the pin 2 needs to be installed in a patch manner, the pin 2 can be bent horizontally, and the end of the pin 2 after bending is embedded in the clearance groove 18 to facilitate the bending of the pin 2 and the positioning after bending.
[0024] Preferably, two positioning columns 19 are integrally formed at the bottom of the housing 1. During assembly, the positioning columns 19 are positioned with positioning holes of an application object (usually a PCB board) to improve the stability of switch installation.
[0025] As mentioned above, the present invention is not limited in any form. Although the present invention has been disclosed as a preferred implementation case as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to the equivalent implementation cases of equivalent changes by using the above-disclosed structures and technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above implementation cases based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A lockless push button switch, comprising a housing (1), two pins (2) arranged on two opposite sides of the housing (1), a button (3) arranged in the housing (1) and slidable up and down, and a cover (4) covering the upper end of the housing (1), the button (3) being provided with a contact piece (5) cooperating with the pins (2) for switching on and off, a return spring (6) being provided between the button (3) and the housing (1), characterized in that: The pin (2) is T-shaped, and static contacts (7) are provided on both sides of the upper end of the pin (2), a concave embedding portion (8) embedded in the housing (1) is provided in the middle, and a wiring portion (9) extending out of the housing (1) is provided at the lower end. The contact piece (5) includes a square frame-shaped embedding portion (10) embedded in the key (3) and four moving contacts (11) integrally formed at both ends of the square frame-shaped embedding portion (10) and cooperating with the static contacts (7) for on-off switching.
2. The non-locking key switch according to claim 1, characterized in that: A bubble point (12) is integrally formed on the moving contact (11).
3. The non-locking key switch according to claim 1, characterized in that: Positioning steps (13) for positioning and cooperating with the button (3) are provided at the four corners of the inner cavity of the shell (1).
4. The non-locking key switch according to claim 1, characterized in that: A groove (14) is provided on the side of the button (3).
5. The non-locking key switch according to claim 1, characterized in that: The shell cover (4) is connected to hooks (16) on both sides of the housing (1) via buckles (15) on both sides, and the shell cover (4) is covered with a protective sheath (17).
6. The non-locking key switch according to claim 1, characterized in that: The housing (1) is provided with a clearance groove (18) at the upper end corresponding to the wiring portion (9).
7. The non-locking key switch according to claim 1, characterized in that: Two positioning columns (19) are integrally formed at the bottom of the shell (1).