CN-224204015-U - Single-pole double-throw micro-switch

CN224204015UCN 224204015 UCN224204015 UCN 224204015UCN-224204015-U

Abstract

The utility model belongs to the technical field of microswitches, and particularly discloses a single-pole double-throw microswitch which comprises a fixed contact assembly, a switching contact and a switching mechanism, wherein the contact assembly comprises a first port contact and a second port contact, the switching contact is arranged between the first port contact and the second port contact and has a first working state in contact with the first port contact and a second working state in contact with the second port contact, the switching mechanism comprises a switching block and a switching piece, the switching block is elastically connected with the switching piece, the switching contact is arranged on the switching piece, and the switching block can be used for driving the switching contact to swing and is used for driving a switching point to switch between the first working state and the second working state. The utility model avoids the switch from being closed by false touch under the condition of frequent vibration, reduces the possibility of false touch of the micro switch and improves the integral shock resistance of the micro switch.

Inventors

TAN XIAOLONG
JIANG XIAOHONG
GUAN MENGFAN
JIA YONG
SONG WENWEN
ZHANG YUNFU
ZHANG JIAN
JIAN KAIREN

Assignees

中广核工程有限公司
重庆川仪调节阀有限公司

Dates

Publication Date: 20260505
Application Date: 20250410

Claims (10)

1. A single pole double throw microswitch comprising: A fixed contact assembly including a first port contact and a second port contact; A switch contact disposed between the first port contact and the second port contact, the switch contact having a first operational state in contact with the first port contact and a second operational state in contact with the second port contact; The switching mechanism comprises a switching block and a switching piece, the switching block is elastically connected with the switching piece, the switching contact is arranged on the switching piece, and the switching block can be used for driving the switching contact to swing and driving the switching contact to switch between a first working state and a second working state.
2. The single pole double throw micro switch of claim 1, wherein the switching mechanism further comprises a common terminal, the switching block and the switching piece are both fixed on the common terminal, an elastic piece is arranged between the switching block and the common terminal, and the switching block and the switching piece are respectively abutted to the common terminal through the elastic piece.
3. The single pole double throw micro switch of claim 2, wherein the common terminal is provided with a first clamping groove, the conversion block is provided with a clamping block, the clamping block and the first clamping groove are provided with a first abutting part which is mutually abutted, and the conversion block can swing around the first abutting part.
4. The single pole double throw micro switch of claim 2, wherein the common terminal is provided with a second clamping groove, the switching piece is provided with a connecting part, the connecting part and the second clamping groove are provided with a second abutting part which abuts against each other, and the switching piece can swing around the second abutting part.
5. The single pole double throw micro switch of claim 2, further comprising a housing assembly and a button, wherein the fixed contact assembly, the switch contact and the switch mechanism are all disposed within the housing assembly.
6. The single pole double throw micro switch of claim 5, wherein the housing assembly comprises an outer housing, an inner housing and a base, the base is disposed at the bottom of the outer housing, the inner housing is disposed within the outer housing and the inner housing abuts the base.
7. The single-pole double-throw micro switch of claim 6, further comprising a button, wherein the inner shell is provided with an avoidance port, a trigger rod capable of penetrating through the avoidance port is arranged at the bottom of the button, and the trigger rod can be used for driving the conversion block to swing.
8. The single pole double throw micro switch of claim 7, wherein the inner housing has a reset lever, the button has a reset slot, and the reset lever has a reset spring inserted into the reset slot.
9. The single pole double throw micro switch of claim 8, wherein the inner housing has a plurality of guide holes, the bottom of the button has a guide rod corresponding to the guide holes, and the guide rod is inserted into the guide holes.
10. The single pole double throw micro switch of claim 6, further comprising a first terminal and a second terminal, wherein the first port contact is arranged on the first terminal, the second port contact is arranged on the second terminal, the base is provided with a first clamping groove, a second clamping groove and a third clamping groove, the first terminal is fixedly connected with the first clamping groove, the second clamping groove is fixedly connected with the second terminal, and the common terminal is fixedly connected with the third clamping groove.

Description

Single-pole double-throw micro-switch Technical Field The utility model relates to the technical field of micro switches, in particular to a single-pole double-throw micro switch. Background The single-pole double-throw micro switch is a switch device with a movable contact and two static contacts, has small contact interval and quick response action, supports various functions such as signal switching, limit control and state detection, and has mature application in the fields of industry, automobiles, medical treatment and the like. The small single-pole double-throw micro switch disclosed in China patent No. CN203406188U comprises a base, a reed assembly and an upper/lower contact piece which is in normally closed/normally open contact with the reed assembly respectively, wherein the reed assembly comprises a reed, a spring and a transmission rod, the reed is arranged between the transmission rod and the spring, cover plates are respectively arranged on two sides of the base, and a compression bar which is used for limiting the transmission rod in the reed assembly and applying force is hinged between the two cover plates. In the prior art, the single-pole double-throw micro switch generally adopts the elastic action of a reed to switch the position of a common contact so as to change the switch state. Aiming at special environments, such as the nuclear power field, the micro-switch is required to have the performances of high temperature resistance, irradiation resistance, earthquake resistance and the like, and can be reliable for a long time, and because the design of the existing micro-switch is not provided with a design action allowance, false triggering is easy to occur under the conditions of strong vibration and earthquake, and the micro-switch cannot be reliably used in the nuclear power field. In view of this, the applicant proposes a single pole double throw microswitch. Disclosure of utility model In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a single-pole double-throw micro switch, which is used for solving the problem of insufficient shock resistance of the single-pole double-throw micro switch in the prior art. To achieve the above and other related objects, the present utility model provides a single pole double throw micro switch comprising: A fixed contact assembly including a first port contact and a second port contact; A switch contact disposed between the first port contact and the second port contact, the switch contact having a first operational state in contact with the first port contact and a second operational state in contact with the second port contact; The switching mechanism comprises a switching block and a switching piece, the switching block is elastically connected with the switching piece, the switching contact is arranged on the switching piece, and the switching block can be used for driving the switching contact to swing and driving the switching contact to switch between a first working state and a second working state. Optionally, the switching mechanism further includes a common terminal, the conversion block and the switching piece are both fixed on the common terminal, an elastic member is disposed between the conversion block and the common terminal, and the conversion block and the switching piece are respectively abutted to the common terminal through the elastic member. Optionally, the common terminal is provided with a first clamping groove, the conversion block is provided with a clamping block, the clamping block and the first clamping groove are provided with first abutting parts which are mutually abutted, and the conversion block can swing around the first abutting parts. Optionally, the common terminal is provided with a second clamping groove, the switching piece is provided with a connecting part, the connecting part and the second clamping groove are provided with second abutting parts which are mutually abutted, and the switching piece can swing around the second abutting parts. Optionally, the single pole double throw micro switch further comprises a housing assembly and a button, wherein the fixed contact assembly, the switching contact and the switching mechanism are all arranged in the housing assembly. Optionally, the housing assembly includes an outer shell, an inner shell, and a base, the base is disposed at the bottom of the outer shell, the inner shell is disposed in the outer shell and the inner shell is abutted with the base. Optionally, the single-pole double-throw micro switch further comprises a button, an avoidance port is formed in the inner shell, a trigger rod capable of penetrating through the avoidance port is arranged at the bottom of the button, and the trigger rod can be used for driving the conversion block to swing. Optionally, a reset rod is arranged on the inner shell, a reset groove is arranged on the button, and a reset spring penetrating into the re