CN209374376U - A kind of breaker contact system that arc protection is restriked - Google Patents
A kind of breaker contact system that arc protection is restriked Download PDFInfo
- Publication number
- CN209374376U CN209374376U CN201822156868.7U CN201822156868U CN209374376U CN 209374376 U CN209374376 U CN 209374376U CN 201822156868 U CN201822156868 U CN 201822156868U CN 209374376 U CN209374376 U CN 209374376U
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- China
- Prior art keywords
- moving contact
- contact
- breaker
- rotary body
- connecting rod
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Abstract
The utility model relates to a kind of breaker contact system more particularly to a kind of breaker contact systems that arc protection is restriked.Including moving contact, static contact and connecting rod, the head of the moving contact is equipped with the rotary body with moving contact in rotation connection, and the bottom of the moving contact tail end is equipped with the static contact touched with moving contact in activity.The reliability for guaranteeing breaker disjunction, improves the short circuit breaking capacity of breaker.
Description
Technical field
The utility model relates to a kind of breaker contact system more particularly to a kind of contact of breaker systems that arc protection is restriked
System.
Background technique
The contact system of breaker is mainly made of moving contact and static contact.In breaker closing, dynamic/static contact closure
And certain pressure is kept by spring, guarantee that route is reliably connected.In breaker open operation, dynamic/static contact is separated, line disconnection.
As the continuous development of electric system requires the breaking capacity of breaker higher and higher.Breaker is more and more
Ground uses current-limiting type, i.e., when short circuit current generates, moving contact quickly separates under the action of electrodynamic repulsion force, to limit reality
The maximum value of short circuit current.As the reprimand of dynamic/static contact is opened, the resistance between dynamic and static contact is increased rapidly, and short circuit current subtracts therewith
Small, the electrodynamic repulsion force between dynamic and static contact also reduces therewith, and the moving contact opened by reprimand under spring force may be to closure position
Movement is set, arc reignition is caused, thus causes serious harm to route and breaker.
Utility model content
The utility model mainly solves the deficiencies in the prior art, provide it is a kind of compact-sized, can be effective
It is moved after preventing contact reprimand from opening to closed position, the contact of breaker that a kind of arc protection for preventing arc reignition from causing damages is restriked
System.
Above technical problems of the utility model are mainly solved by the following technical scheme:
A kind of breaker contact system that arc protection is restriked, including moving contact, static contact and connecting rod, the moving contact
Head is equipped with the rotary body with moving contact in rotation connection, and the bottom of the moving contact tail end is equipped with moving contact in activity touching
The static contact connect；
One end of the connecting rod and rotary body are connected in rotation, and the other end and rotary body of the connecting rod are resilient company
It connects, it is in the cam surface being slidably connected that the bottom of the moving contact left end, which is equipped with connecting rod,.
Preferably, the connecting rod is connect by pitman shaft with rotary body, the other end of the connecting rod is equipped with sliding
The upper end of axis, the rotary body is equipped with spring shaft, and the sliding axle is flexible connection with spring between centers by spring, described
The two sides of moving contact be respectively equipped with spring, the cam surface is slidably connected along sliding axle.
Preferably, the head of the moving contact extends outward rotary body, the moving contact passes through central axis edge
Rotary body is rotated.
Working principle: moving contact is through rotary body inner cavity, and hinged with rotary body by central axis, moving contact can be around center
Axis rotation；One end of connecting rod is hinged by pitman shaft and rotary body, and connecting rod can be rotated around pitman shaft, and the other end of connecting rod is fixed with
Sliding axle, sliding axle are respectively equipped with spring by center two sides of moving contact；The other end of spring is fixed on spring shaft, and spring shaft is solid
It is scheduled on rotary body；Moving contact lower edge is equipped with cam surface, and sliding axle is pressed on cam surface under spring force.
The operation of breaker normal operating splitting or integrating is realized with the rotation of breaker mechanism control rotary body.
When route is normal, when breaker is in the close position, under spring force, shifting axle is made by cam surface
It is clockwise, to make moving contact and static contact reliable contacts and keep certain pressure with the torque on moving contact.Work as route
When short circuit occurs, moving contact under the action of electrodynamic repulsion force open rapidly by reprimand, and sliding axle is moved to the another location of cam surface.This
When, if moving contact is moved to closed position, under spring force, shifting axle is acted on moving contact by cam surface
Torque becomes counterclockwise, so that ensure that will not move after moving contact reprimand is opened to closed position, avoids arc reignition.
The utility model provides a kind of breaker contact system that arc protection is restriked, compact-sized, be simple to manufacture, performance can
It leans on.When contact system passes through normal current, moving contact is reliably closed with static contact under spring force；Work as contact system
When passing through short-circuit current, moving contact can denounce out rapidly and be blocked by cam surface in reprimand open position, prevent moving contact again
Arc reignition is caused to closed position movement, guarantees the reliability of breaker disjunction, improves the short circuit breaking energy of breaker
Power.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the utility model；
Fig. 2 is the structural schematic diagram under the contact system closed state of the utility model；
Fig. 3 is the structural schematic diagram of the contact system reprimand open position of the utility model；
Fig. 4 is the schematic diagram of the moving contact of the utility model.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment 1: as shown, a kind of breaker contact system that arc protection is restriked, including moving contact 1,2 and of static contact
Connecting rod 3, the head of the moving contact 1 are equipped with the rotary body 4 with moving contact 1 in rotation connection, 1 tail end of moving contact
Bottom is equipped with the static contact 2 touched with moving contact 1 in activity；
One end of the connecting rod 3 and rotary body 4 are connected in rotation, and the other end and rotary body 4 of the connecting rod 3 are in bullet
Property connection, it is in the cam surface 6 being slidably connected that the bottom of 1 left end of moving contact, which is equipped with connecting rod 3,.
The connecting rod 3 is connect by pitman shaft 7 with rotary body 4, and the other end of the connecting rod 3 is equipped with sliding axle 8, institute
The upper end for the rotary body 4 stated is equipped with spring shaft 9, is flexible connection between the sliding axle 8 and spring shaft 9 by spring 10, institute
The two sides for the moving contact 1 stated are respectively equipped with spring 10, and the cam surface 6 is slidably connected along sliding axle 8.
The head of the moving contact 1 extends outward rotary body 4, and the moving contact 1 is by central axis 11 along rotation
Body 4 is rotated.
Claims (3)
1. a kind of breaker contact system that arc protection is restriked, it is characterised in that: including moving contact (1), static contact (2) and connecting rod
(3), the head of the moving contact (1) is equipped with the rotary body (4) with moving contact (1) in rotation connection, the moving contact (1)
The bottom of tail end is equipped with the static contact (2) touched with moving contact (1) in activity；
One end and rotary body (4) of the connecting rod (3) are connected in rotation, the other end of the connecting rod (3) and rotary body (4)
It is flexible connection, it is in the cam surface (6) being slidably connected that the bottom of the moving contact (1) left end, which is equipped with connecting rod (3),.
2. the breaker contact system that a kind of arc protection according to claim 1 is restriked, it is characterised in that: the connecting rod
(3) it is connect by pitman shaft (7) with rotary body (4), the other end of the connecting rod (3) is equipped with sliding axle (8), the rotation
The upper end of body (4) is equipped with spring shaft (9), is flexible connection between the sliding axle (8) and spring shaft (9) by spring (10),
The two sides of the moving contact (1) are respectively equipped with spring (10), and the cam surface (6) is slidably connected along sliding axle (8).
3. the breaker contact system that a kind of arc protection according to claim 1 is restriked, it is characterised in that: the dynamic touching
The head of head (1) extends outward rotary body (4), and the moving contact (1) is turned by central axis (11) along rotary body (4)
It is dynamic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822156868.7U CN209374376U (en) | 2018-12-21 | 2018-12-21 | A kind of breaker contact system that arc protection is restriked |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822156868.7U CN209374376U (en) | 2018-12-21 | 2018-12-21 | A kind of breaker contact system that arc protection is restriked |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209374376U true CN209374376U (en) | 2019-09-10 |
Family
ID=67829844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822156868.7U Active CN209374376U (en) | 2018-12-21 | 2018-12-21 | A kind of breaker contact system that arc protection is restriked |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209374376U (en) |
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2018
- 2018-12-21 CN CN201822156868.7U patent/CN209374376U/en active Active
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