CN217544517U - Static contact arc extinguishing module of circuit breaker - Google Patents
Static contact arc extinguishing module of circuit breaker Download PDFInfo
- Publication number
- CN217544517U CN217544517U CN202221503802.0U CN202221503802U CN217544517U CN 217544517 U CN217544517 U CN 217544517U CN 202221503802 U CN202221503802 U CN 202221503802U CN 217544517 U CN217544517 U CN 217544517U
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- static contact
- support
- arc
- arc extinguishing
- circuit breaker
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Abstract
The utility model relates to a static contact arc extinguishing module of circuit breaker, including support, the static contact of setting in the support, set up cushion, the wiring board of setting on the support between static contact and support, set up on the support and the shroud separates the arc cover, sets up the explosion chamber on separating the arc cover in the static contact both sides, the static contact on be provided with the insulating boot, and the one end of static contact has the stationary contact that exposes outside the insulating boot, and one of static contact serves and is provided with the striking angle that extends to the explosion chamber direction, separate arc cover and support between correspond stationary contact department and be provided with the magnetism increasing piece. The utility model has the advantages of simple structure, dependable performance are stable in performance, the assembly is convenient, can effectively prolong circuit breaker life, improve the circuit breaker breaking capacity.
Description
Technical Field
The utility model relates to a circuit breaker technical field, concretely relates to static contact arc extinguishing module of circuit breaker.
Background
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition for a predetermined time. The circuit breaker has overload, short circuit and under-voltage protection functions, can protect lines and power supply equipment from being damaged, and can protect fire hazards possibly caused by long-term grounding faults which cannot be detected by overcurrent protection. The molded case circuit breaker comprises a plastic housing, an operating mechanism, a moving contact, a fixed contact and an arc extinguishing system, the arc extinguishing system of the existing molded case circuit breaker is unreasonable in structural design, the arc extinguishing system and the fixed contact cannot be integrated and modularized, the assembly is inconvenient, and electric arcs cannot enter an arc extinguishing chamber quickly, so that the arc extinguishing effect of the arc extinguishing system is unsatisfactory, the contact is burnt easily, the service life of the contact is short, and the breaking capacity of the circuit breaker is low.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a simple structure, stable performance are reliable, the assembly is convenient, can effectively prolong circuit breaker life, improve the static contact arc extinguishing module of circuit breaker breaking capacity.
In order to realize the above-mentioned purpose, the utility model discloses a static contact arc extinguishing module of circuit breaker, including support, the static contact of setting in the support, set up cushion, setting wiring board on the support, setting on the support and shroud at the arc shield of static contact both sides, set up the explosion chamber on the arc shield, the static contact on be provided with the insulating boot, and the one end of static contact has the stationary contact that exposes outside the insulating boot, and one of static contact serves and is provided with the striking angle that extends to the explosion chamber direction, arc shield and support between correspond the stationary contact department and be provided with the magnetism increasing piece.
The beneficial effect of above-mentioned structure is: the static contact assembly and the arc extinguishing assembly are designed in a modular structure, the modular assembly of the static contact arc extinguishing module can be realized, and an insulating cover is arranged on the static contact, so that the static contact can be prevented from being ablated by electric arc, the electrical service life of the static contact arc extinguishing module can be prolonged, an arc striking angle can be used for introducing the electric arc into an arc extinguishing chamber quickly, a magnetic blow-up effect can be achieved by a magnetizing sheet, the electric arc can be blown into the arc extinguishing chamber quickly, the electric arc can be extinguished quickly, and the static contact arc extinguishing module has the advantages of being simple in structure, stable and reliable in performance, convenient to assemble, capable of prolonging the service life of a circuit breaker effectively, and improving the breaking capacity of the circuit breaker.
Particularly, the arc-extinguishing chamber is provided with an arc-absorbing piece at the upper end, and the arc-absorbing piece is provided with a bending arc-striking piece extending in an arc-extinguishing channel of the arc-extinguishing chamber. The arc absorbing sheet can lead the electric arc of the moving contact into the arc extinguishing chamber, so that the arc extinguishing performance of the static contact arc extinguishing module can be improved.
Particularly, the support in correspond to increase magnetic sheet department and be provided with the joint piece, increase the magnetic sheet on be provided with the joint groove, the joint piece block in the joint inslot, and constitute the joint cooperation of increasing magnetic sheet and support. The magnetism increasing sheet and the support are connected in a clamping matching mode, so that the magnetism increasing sheet and the support are convenient to assemble, and the assembly is more convenient.
Particularly, the arc-isolating cover is provided with an arc-extinguishing deleting piece corresponding to the rear side of the arc-extinguishing chamber. The arc extinguishing deletion piece can play a role in extinguishing flashover, so that the arc extinguishing effect of the static contact arc extinguishing module is improved.
Particularly, the one end of wiring board have two joint portions, be provided with the draw-in groove in the joint portion, the support on correspond two joint portions and do not be provided with a lug, the lug block in the draw-in groove, and constitute the joint cooperation of wiring board and support. The wiring board and the support are assembled in a clamping matching mode, so that the wiring board and the support are convenient to assemble, and the assembly is more convenient.
Particularly, the other end of the static contact is provided with a rotating shaft, the rotating shaft is inserted into the positioning hole of the bracket and forms rotating connection and matching of the static contact and the bracket, and the cushion block is provided with a collision inclined plane which is attached to the lower end face of one end of the static contact. The static contact is connected to the support through the rotating shaft, so that the connection between the static contact and the support can be more reliable, the cushion block is attached to the static contact, the static contact can be reliably contacted with the moving contact, and the improvement of the working reliability of the static contact arc extinguishing module of the circuit breaker is facilitated.
Drawings
Fig. 1 is a perspective view of an embodiment of the present invention.
Fig. 2 is a cross-sectional view of an embodiment of the present invention.
Fig. 3 is an exploded view of an embodiment of the present invention.
Detailed Description
As shown in fig. 1-3, the embodiment of the utility model provides a static contact arc extinguishing module of circuit breaker, including support 11, the static contact 12 of setting in support 11, set up cushion 13 between static contact 12 and support 11, set up wiring board 14 on support 11, set up on support 11 and shroud at the arc shield 15 of static contact 12 both sides, set up the explosion chamber 16 on arc shield 15, static contact 12 on be provided with insulating boot 17, and the one end of static contact 12 has the stationary contact 121 that exposes outside insulating boot 17, and one of static contact 12 is served and is provided with the striking angle 18 that extends to explosion chamber 16 direction, arc shield 15 and support 11 between correspond stationary contact 121 and be provided with magnetism increasing piece 19. The arc extinguishing chamber 16 is provided with an arc absorbing sheet 161 at the upper end thereof, and the arc absorbing sheet 161 is provided with a bent arc striking sheet 162 extending in the arc extinguishing channel 160 of the arc extinguishing chamber 16. The arc absorbing sheet can lead the electric arc of the moving contact into the arc extinguishing chamber, so that the arc extinguishing performance of the static contact arc extinguishing module can be improved. Support 11 in correspond to increase magnetic sheet 19 department and be provided with joint piece 111, increase magnetic sheet 19 on be provided with joint groove 191, joint piece 111 block in joint groove 191, and constitute the joint cooperation of increasing magnetic sheet 19 and support 11. The magnetizing sheet and the support are connected in a clamping matching mode, so that the magnetizing sheet and the support can be assembled conveniently, and the assembly is more convenient. And an arc extinguishing deletion sheet 20 is arranged on the arc isolating cover 15 corresponding to the rear side of the arc extinguishing chamber 16. The arc extinguishing deleting pieces can extinguish arc flashover, so that the arc extinguishing effect of the static contact arc extinguishing module is improved. One end of the wiring board 14 has two clamping parts 141, a clamping groove 142 is arranged on the clamping part 141, a convex block 112 is respectively arranged on the support 11 corresponding to the two clamping parts 141, and the convex block 112 is clamped in the clamping groove 142 and forms clamping cooperation between the wiring board 14 and the support 11. The wiring board and the support are assembled in a clamping matching mode, so that the wiring board and the support are convenient to assemble, and the assembly is more convenient. The other end of the static contact 12 is provided with a rotating shaft 21, the rotating shaft 21 is inserted into the positioning hole 113 of the bracket 11, and forms a rotating connection fit between the static contact 12 and the bracket 11, and the cushion block 13 is provided with a collision inclined surface 131, and the collision inclined surface 131 is attached to the lower end surface of one end of the static contact 12. The static contact is connected to the support through the rotating shaft, so that the connection between the static contact and the support can be more reliable, the cushion block is attached to the static contact, the static contact can be reliably contacted with the moving contact, and the improvement of the working reliability of the static contact arc extinguishing module of the circuit breaker is facilitated.
The static contact assembly and the arc extinguishing assembly are designed in a modular structure, modular assembly of the static contact arc extinguishing module can be achieved, and an insulating cover is arranged on the static contact, so that the static contact can be prevented from being ablated by electric arcs, the electrical service life of the static contact arc extinguishing module can be prolonged, an arc striking angle can be used for introducing the electric arcs into an arc extinguishing chamber quickly, a magnetism increasing sheet can play a role in magnetic blowing, the electric arcs can be blown into the arc extinguishing chamber quickly, the quick extinguishing of the electric arcs is facilitated, and the static contact arc extinguishing module has the advantages of being simple in structure, stable and reliable in performance, convenient to assemble, capable of effectively prolonging the service life of a breaker, and improving breaking capacity of the breaker.
Claims (6)
1. The utility model provides a static contact arc extinguishing module of circuit breaker which characterized in that: the arc extinguishing device comprises a support, a fixed contact arranged in the support, a cushion block arranged between the fixed contact and the support, a wiring board arranged on the support, an arc isolation cover arranged on the support and covering the two sides of the fixed contact, and an arc extinguishing chamber arranged on the arc isolation cover, wherein an insulating cover is arranged on the fixed contact, one end of the fixed contact is provided with a fixed contact exposed outside the insulating cover, an arc striking angle extending towards the direction of the arc extinguishing chamber is arranged at one end of the fixed contact, and a magnetism increasing sheet is arranged between the arc isolation cover and the support and corresponds to the fixed contact.
2. The static contact arc extinguishing module of the circuit breaker of claim 1, characterized in that: the arc extinguishing chamber upper end be provided with the arc-absorbing piece, this arc-absorbing piece is last to have the arc striking piece of bending that extends in the arc extinguishing passageway of arc extinguishing chamber.
3. The static contact arc extinguishing module of the circuit breaker according to claim 1 or 2, characterized in that: the support in correspond magnetism increase piece department and be provided with the joint piece, magnetism increase piece on be provided with the joint groove, the joint piece block in the joint inslot, and constitute the joint cooperation of magnetism increase piece and support.
4. The static contact arc extinguishing module of the circuit breaker according to claim 1 or 2, characterized in that: arc extinguishing deletion pieces are arranged on the arc isolating cover corresponding to the rear sides of the arc extinguishing chambers.
5. The static contact arc extinguishing module of the circuit breaker according to claim 1 or 2, characterized in that: the one end of wiring board have two joint portions, be provided with the draw-in groove in the joint portion, the support on correspond two joint portions and do not be provided with a lug, the lug block in the draw-in groove, and constitute the joint cooperation of wiring board and support.
6. The static contact arc extinguishing module of the circuit breaker according to claim 1 or 2, characterized in that: the other end of the static contact is provided with a rotating shaft, the rotating shaft is inserted into the positioning hole of the bracket and forms rotating connection and matching of the static contact and the bracket, and the cushion block is provided with a collision inclined plane which is attached to the lower end face of one end of the static contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221503802.0U CN217544517U (en) | 2022-06-16 | 2022-06-16 | Static contact arc extinguishing module of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221503802.0U CN217544517U (en) | 2022-06-16 | 2022-06-16 | Static contact arc extinguishing module of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217544517U true CN217544517U (en) | 2022-10-04 |
Family
ID=83420732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221503802.0U Active CN217544517U (en) | 2022-06-16 | 2022-06-16 | Static contact arc extinguishing module of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217544517U (en) |
-
2022
- 2022-06-16 CN CN202221503802.0U patent/CN217544517U/en active Active
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