CN219226091U

CN219226091U - Micro-gap switch that life is long

Info

Publication number: CN219226091U
Application number: CN202320845121.0U
Authority: CN
Inventors: 滕凌峰; 滕琳琼; 滕腾; 滕博
Original assignee: Tengfei Electroincs Co ltd Yueqing City
Current assignee: Tengfei Electroincs Co ltd Yueqing City
Priority date: 2023-04-17
Filing date: 2023-04-17
Publication date: 2023-06-20
Anticipated expiration: 2033-04-17

Abstract

The utility model provides a long service life's micro-gap switch, includes a casing, a movable reed (20), a push piece (30), a terminal (40) and a common terminal (50), and this casing includes an upper cover (11) and a base (12) that are fixed each other, and this movable reed (20) are established in this casing, and this movable reed (20) divide into movable reed expansion end (21) and movable reed stiff end (22), its characterized in that: a silver contact (41) is arranged on the end of the terminal (40) close to the movable end (21) of the movable reed. By adopting the structural design, the contact is arranged on the terminal, and the movable reed only collides with the contact on the terminal once in one pressing process, so that the service life of the movable reed is prolonged, namely the service life of the micro switch is prolonged.

Description

Micro-gap switch that life is long

Technical Field

The utility model relates to the technical field of micro switches, in particular to a micro switch with long service life.

Background

The micro switch is mainly characterized in that when the micro switch is used, the switch is closed and connected by pressing the switch function in the operation direction of the switch under the condition that the operation force is met, and when the pressure is withdrawn, the switch is opened and closed, and the internal structure of the micro switch is switched on and off by the stress change of the metal elastic sheet.

Chinese patent No. CN202021338707.0 discloses a small micro switch, which comprises a housing, a movable reed, a pressing piece, a terminal and a common terminal, wherein the housing comprises an upper cover and a base which are fixed with each other, the movable reed is divided into a movable end and a movable end of the movable reed, a circular arc spring plate is arranged between the movable end and the movable end of the movable reed, one end of the circular arc spring plate is fixed at one side of the movable end of the movable reed, and the other end of the circular arc spring plate is the movable end; the common terminal is provided with a second boss for clamping the circular arc-shaped elastic sheet, and the movable end of the circular arc-shaped elastic sheet is clamped on the second boss; a pressing piece in movable contact with the movable reed is arranged between the first boss and the second boss, and penetrates through the upper cover; one end of the base, which is close to the movable end of the movable reed, is provided with a 7-shaped limiting piece, and an inward extension part of the limiting piece is positioned above the movable end of the movable reed; the movable end of the movable reed is provided with silver contacts, the silver contacts protrude out of the upper surface and the lower surface of the movable end of the movable reed, when the pressing piece is pressed, the silver contacts of the movable reed are contacted with the terminal, when the pressing piece is released, the silver contacts of the movable reed are contacted with the extending part again, and the silver contacts respectively complete twice impact with the terminal and the extending part in one pressing process, so that the service life is greatly reduced.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide the micro switch with long service life, which is used for providing the service life of the silver contact.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

a microswitch with long service life comprises a shell, a movable reed, a pressing piece, a terminal and a common terminal, wherein the shell comprises an upper cover and a base which are mutually fixed, the movable reed is arranged in the shell and is divided into a movable reed end and a movable reed fixed end, and a silver contact is arranged on the end part of the terminal, which is close to the movable reed end.

Furthermore, one end of the base, which is close to the movable end of the movable reed, is provided with a 7-shaped limiting piece, and an inward extending part of the limiting piece is positioned above the movable end of the movable reed.

Further, the free end of the extending part of the limiting part is bent towards the movable end of the movable reed.

Compared with the prior art, the utility model has the beneficial effects that:

due to the adoption of the structural design, the silver contact is arranged on the terminal, and the silver contact is only impacted once with the movable reed when being pressed, so that the impact times of half of the silver contact are reduced, the service life of the silver contact is effectively prolonged, and the risk of falling of the silver contact is reduced.

Drawings

FIG. 1 is a schematic diagram of an exploded structure of an embodiment of the present utility model.

The reference numerals in the figures are respectively:

20-movable reed, 30-pressing piece, 40-terminal and 50-common terminal;

11-upper cover, 12-base;

21-movable reed movable end and 22-movable reed fixed end;

41-silver contacts;

121-stop, 122-extension.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings:

referring to fig. 1, the utility model discloses a long-life micro switch, which comprises a housing, a movable spring 20, a pressing piece 30, a terminal 40 and a common terminal 50, wherein the housing comprises an upper cover 11 and a base 12 which are mutually fixed, the movable spring 20 is arranged in the housing, the movable spring 20 is divided into a movable spring movable end 21 and a movable spring fixed end 22, the movable spring 20 is provided with a circular arc-shaped elastic piece between the movable spring fixed end 22 and the movable spring movable end 21, one end of the circular arc-shaped elastic piece is fixed on one side of the movable spring movable end 21, and the other end of the circular arc-shaped elastic piece is a movable end; the common terminal 50 is provided with a second boss for clamping the circular arc-shaped elastic sheet, and the movable end of the circular arc-shaped elastic sheet is clamped on the second boss; a pressing piece 30 in movable contact with the movable reed is arranged between the first boss and the second boss, and the pressing piece 30 penetrates through the upper cover 11; the end of the terminal 40 close to the movable end 21 of the movable spring piece is provided with a silver contact 41, and when the pressing piece 30 is pressed, the movable end 21 of the movable spring piece contacts and impacts once with the silver contact on the end of the terminal, and when the pressing piece is released, the movable end of the movable spring piece is reset; the silver contact on this terminal only strikes once with movable reed expansion end 21 in a pressing process, has reduced the striking number of times of half silver contact, has effectively increased silver contact's life, reduces silver contact's risk that drops.

Normally, when the pressing member is released, the movable end of the movable spring is limited in stroke when reset, in order to avoid an extreme situation, a 7-shaped limiting member 121 is still disposed at one end of the base 12 adjacent to the movable end 21 of the movable spring, for limiting the possible extreme situation of the movable end of the movable spring, the inward extending portion 122 of the limiting member 121 is located above the movable end 21 of the movable spring, and the free end of the extending portion 122 of the limiting member 121 is bent toward the movable end 21 of the movable spring.

In conclusion, the utility model solves the defects in the prior art through the structural design, and has the characteristics of simple and reasonable structure, long service life and the like.

Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a long service life's micro-gap switch, includes a casing, a movable reed (20), a push piece (30), a terminal (40) and a common terminal (50), and this casing includes an upper cover (11) and a base (12) that are fixed each other, and this movable reed (20) are established in this casing, and this movable reed (20) divide into movable reed expansion end (21) and movable reed stiff end (22), its characterized in that: a silver contact (41) is arranged on the end of the terminal (40) close to the movable end (21) of the movable reed.

2. The long-life microswitch of claim 1 wherein: one end of the base (12) close to the movable reed end (21) is provided with a 7-shaped limiting piece (121), and an inward extension part (122) of the limiting piece (121) is positioned above the movable reed end (21).

3. The long-life microswitch of claim 2 wherein: the free end of the extension part (122) of the limiting piece (121) is bent towards the movable end (21) of the movable spring piece.