CN218769250U - Heavy current circuit breaker - Google Patents
Heavy current circuit breaker Download PDFInfo
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- CN218769250U CN218769250U CN202223110896.8U CN202223110896U CN218769250U CN 218769250 U CN218769250 U CN 218769250U CN 202223110896 U CN202223110896 U CN 202223110896U CN 218769250 U CN218769250 U CN 218769250U
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- arc
- circuit breaker
- static contact
- current circuit
- line pressing
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Abstract
The utility model relates to a heavy current circuit breaker, including drain pan, upper cover, operating device, with operating device linkage complex moving contact, static contact, explosion chamber, striking piece, electromagnetism release, first binding post, second binding post, the upper cover in correspond between the ejector pin of static contact and electromagnetism release and locate to be provided with insulating barrier, the drain pan on correspond insulating barrier and locate to be provided with the constant head tank of looks adaptation, insulating barrier alternate when in the constant head tank, insulating barrier separate the ejector pin of static contact and electromagnetism release in both sides. The utility model has the advantages of simple structure, stable performance, reliable performance, good insulating property and convenient assembly.
Description
Technical Field
The utility model relates to a circuit breaker technical field, concretely relates to heavy current circuit breaker.
Background
The large-current miniature circuit breaker is suitable for overload and short-circuit protection of lines with the rated voltage of 230/400V and the rated current of 160A and the rated voltage of 50/60Hz, and can also be used for infrequent operation and switching of the lines under normal conditions. The method is mainly used in various places such as industrial, commercial, high-rise and civil houses. The miniature circuit breaker comprises a shell, an operating mechanism, an electromagnetic release, an arc extinguish chamber, a moving contact and a static contact, wherein the creepage distance between an ejector rod of the electromagnetic release of the existing large-current miniature circuit breaker and the static contact is smaller, and the insulating property is poorer, so that the equipment and the personal safety are influenced. And the structural design of the existing large-current miniature circuit breaker is complex, the circuit breaker can not be modularized in an integrated mode, and the assembly is complex.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a simple structure, stable performance are reliable, insulating properties is good, the convenient heavy current circuit breaker of assembly.
In order to realize the above purpose, the utility model discloses a heavy current circuit breaker, including drain pan, upper cover, operating device, with operating device linkage complex moving contact, static contact, explosion chamber, run-on plate, electromagnetism release, first binding post, second binding post, the upper cover in correspond between the ejector pin of static contact and electromagnetism release and locate to be provided with insulating barrier, the drain pan on correspond insulating barrier department and be provided with the constant head tank of looks adaptation, insulating barrier alternate when in the constant head tank, insulating barrier separate the ejector pin of static contact and electromagnetism release in both sides.
The beneficial effect of above-mentioned structure is: the insulating partition plate in the upper cover can separate the static contact from the ejector rod of the electromagnetic trip, the creepage distance between the ejector rod and the static contact can be effectively increased, the insulating property is better, the equipment and personal safety can be effectively guaranteed, and the safety is higher. Therefore, the high-current circuit breaker has the advantages of simple structure, stable and reliable performance and good insulating performance.
Particularly, one end of the static contact is bent and extended towards the first wiring terminal and is provided with a line pressing part, the line pressing part is inserted into a wiring frame of the first wiring terminal, the tail part of a wiring screw of the first wiring terminal is abutted against the line pressing part, a line pressing cavity is formed between the line pressing part and the wiring frame, and the other end of the static contact is abutted against the arc striking plate. The static contact and the first wiring terminal are integrated and modularized, so that the first wiring terminal and the static contact can be assembled in a modularized mode, and the assembly is more convenient and fast.
Particularly, one end of a magnetic yoke of the electromagnetic release, which is close to the movable contact, is provided with an arc striking angle, one end of the arc striking angle extends into the arc extinguishing chamber, and one end of the magnetic yoke, which is far away from the movable contact, is provided with a bimetallic strip. The arc striking angle on the magnet yoke can lead the electric arc into the arc extinguishing chamber quickly, so as to achieve the effect of quickly extinguishing the electric arc. The bimetallic strip is integrated on the magnetic yoke of the electromagnetic release, the bimetallic strip and the electromagnetic release can be integrated and modularized, the assembly is more convenient, and the thermomagnetic protection function of the high-current circuit breaker can be realized.
Particularly, the arc striking piece is provided with a supporting part corresponding to two sides of the moving contact respectively, each supporting part is provided with an arc isolating plate respectively, the two arc isolating plates are arranged on two sides of the moving contact in an isolating way, and an arc isolating channel communicated with the arc extinguishing chamber is formed between the two arc isolating plates. The arc-isolating plate can play a role in isolating electric arcs, and the electric arcs can enter the arc extinguishing chamber quickly along the arc-isolating channel, so that the arc extinguishing performance of the high-current circuit breaker is improved.
Particularly, two flash barriers on be provided with respectively with supporting part matched with slot, the slot block on the supporting part, and constitute the joint cooperation of flash barrier and supporting part. The supporting part of flash barrier and run-on piece adopts the joint cooperation mode assembly, and the assembly of the run-on piece of being convenient for and flash barrier is more convenient.
Drawings
Fig. 1 is an exploded view of an embodiment of the present invention.
Fig. 2 is a front view of the internal structure of the embodiment of the present invention.
Fig. 3 is a perspective view of the upper cover according to the embodiment of the present invention.
Fig. 4 is an exploded view of the arc barrier and the arc striking plate according to the embodiment of the present invention.
Detailed Description
As shown in fig. 1 to 4, an embodiment of the present invention is a high current circuit breaker, including a bottom case 10, an upper cover 11, an operating mechanism 12, a moving contact 13 cooperating with the operating mechanism 12 in a linkage manner, a static contact 14, an arc extinguish chamber 15, an arc striking plate 16, an electromagnetic trip 17, a first connection terminal 18, and a second connection terminal 19, the top case 11 is provided with an insulating partition 111 between a top rod 171 corresponding to the static contact 14 and the electromagnetic trip 17, the bottom case 10 is provided with a positioning groove 101 corresponding to the insulating partition 111, when the insulating partition 111 is inserted into the positioning groove 101, the insulating partition 111 separates the top rod 171 of the static contact 14 and the electromagnetic trip 17 in two sides. One end of the static contact 14 is bent and extended towards the first connection terminal 18 and is formed with a line pressing portion 141, the line pressing portion 141 is inserted into the connection frame 181 of the first connection terminal 18, the tail portion of the connection screw 182 of the first connection terminal 18 abuts against the line pressing portion 141, a line pressing cavity 180 is formed between the line pressing portion 141 and the connection frame 181, and the other end of the static contact 14 abuts against the arc striking plate 16. The static contact and the first wiring terminal are integrated and modularized, so that the first wiring terminal and the static contact can be assembled in a modularized mode, and the assembly is more convenient and fast. The end of the magnetic yoke 172 of the electromagnetic release 17 close to the movable contact 13 has an arc ignition angle 173, one end of the arc ignition angle 173 extends into the arc extinguishing chamber 15, and the end of the magnetic yoke 172 far away from the movable contact 13 is provided with a bimetallic strip 20. The arc striking angle on the magnet yoke can lead the electric arc into the arc extinguishing chamber quickly, so as to achieve the effect of quickly extinguishing the electric arc. The bimetallic strip is integrated on the magnetic yoke of the electromagnetic release, the bimetallic strip and the electromagnetic release can be integrated and modularized, the assembly is more convenient, and the thermomagnetic protection function of the high-current circuit breaker can be realized.
As shown in fig. 4, the arc striking plate 16 is provided with a support portion 161 corresponding to two sides of the movable contact 13, each support portion 161 is provided with an arc isolating plate 21, two arc isolating plates 21 are arranged at two sides of the movable contact 13 in an isolating way, and an arc isolating channel 210 communicated with the arc extinguishing chamber 15 is formed between the two arc isolating plates 21. The arc-isolating plate can play a role in isolating electric arcs, and the electric arcs can enter the arc extinguishing chamber quickly along the arc-isolating channel, so that the arc extinguishing performance of the high-current circuit breaker is improved. Two flash barriers 21 on be provided with respectively with supporting part 161 matched with slot 211, slot 211 block on supporting part 161, and constitute flash barriers 21 and supporting part 161's joint cooperation. The supporting part of flash barrier and run-on plate adopts the joint cooperation mode assembly, the assembly of the run-on plate of being convenient for and flash barrier, and the assembly is more convenient.
The insulating partition plate in the upper cover can separate the fixed contact from the ejector rod of the electromagnetic release, the creepage distance between the ejector rod and the fixed contact can be effectively increased, the insulating property is better, the equipment and personal safety can be effectively guaranteed, and the safety is higher. Therefore, the high-current circuit breaker has the advantages of simple structure, stable and reliable performance and good insulating performance.
Claims (5)
1. The utility model provides a large-current circuit breaker, includes drain pan, upper cover, operating device, with operating device linkage complex moving contact, static contact, explosion chamber, run-on plate, electromagnetism release, first binding post, second binding post, its characterized in that: an insulating partition plate is arranged in the upper cover and between the top rod corresponding to the static contact and the electromagnetic release, a positioning groove matched with the bottom shell is arranged on the bottom shell and corresponding to the insulating partition plate, and when the insulating partition plate is inserted into the positioning groove, the insulating partition plate separates the static contact and the top rod of the electromagnetic release at two sides.
2. The high current circuit breaker of claim 1, wherein: one end of the static contact is bent towards the first wiring terminal and extends to form a line pressing part, the line pressing part is inserted into a wiring frame of the first wiring terminal, the tail part of a wiring screw of the first wiring terminal is abutted against the line pressing part, a line pressing cavity is formed between the line pressing part and the wiring frame, and the other end of the static contact is abutted against an arc striking sheet.
3. A high current circuit breaker according to claim 1 or 2, wherein: the electromagnetic trip device is characterized in that an arc striking angle is arranged at one end, close to the moving contact, of a magnetic yoke of the electromagnetic trip device, one end of the arc striking angle extends into the arc extinguishing chamber, and a bimetallic strip is arranged at one end, far away from the moving contact, of the magnetic yoke.
4. A high current circuit breaker according to claim 1 or 2, wherein: the arc striking piece is provided with a supporting part corresponding to the two sides of the moving contact respectively, each supporting part is provided with an arc isolating plate respectively, the two arc isolating plates are arranged on the two sides of the moving contact in an isolating way, and an arc isolating channel communicated with the arc extinguishing chamber is formed between the two arc isolating plates.
5. The high current circuit breaker of claim 4, wherein: the two flash barriers are respectively provided with a slot matched with the supporting part, the slots are clamped on the supporting part, and the flash barriers are clamped and matched with the supporting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223110896.8U CN218769250U (en) | 2022-11-21 | 2022-11-21 | Heavy current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223110896.8U CN218769250U (en) | 2022-11-21 | 2022-11-21 | Heavy current circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218769250U true CN218769250U (en) | 2023-03-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223110896.8U Active CN218769250U (en) | 2022-11-21 | 2022-11-21 | Heavy current circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218769250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117316732A (en) * | 2023-11-28 | 2023-12-29 | 苏州普兆新能源设备有限公司 | DC circuit breaker equipment |
-
2022
- 2022-11-21 CN CN202223110896.8U patent/CN218769250U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117316732A (en) * | 2023-11-28 | 2023-12-29 | 苏州普兆新能源设备有限公司 | DC circuit breaker equipment |
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