CN217114275U - High-breaking small circuit breaker - Google Patents
High-breaking small circuit breaker Download PDFInfo
- Publication number
- CN217114275U CN217114275U CN202220811066.9U CN202220811066U CN217114275U CN 217114275 U CN217114275 U CN 217114275U CN 202220811066 U CN202220811066 U CN 202220811066U CN 217114275 U CN217114275 U CN 217114275U
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- arc
- wiring
- static contact
- circuit breaker
- wiring terminal
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Abstract
The utility model relates to a high disconnected miniature circuit breaker that divides, which comprises a housin, operating device, the moving contact, the static contact, the explosion chamber, the striking piece, first wiring terminal subassembly, second wiring terminal subassembly, be provided with on the static contact with moving contact matched with stationary contact, the one end of static contact extends and is formed with wiring portion to first wiring terminal subassembly direction, and be connected with the wire between wiring portion and the first wiring terminal subassembly, the other end of static contact is formed with the arc portion of bending, the afterbody of the arc portion of should bending extends directly over the explosion chamber, the both sides department that corresponds the arc portion of bending in the casing is provided with a set of flash barrier subassembly respectively, be formed with the arc extinguishing passageway of intercommunication between moving contact and explosion chamber between two sets of flash barrier subassemblies, the flash barrier subassembly is including setting up the flash barrier on shells inner wall, set up the magnetic conduction piece on the flash barrier. The utility model has the advantages of simple structure, stable performance are reliable, the wiring is convenient, the assembly is convenient.
Description
Technical Field
The utility model relates to a circuit breaker technical field, concretely relates to high disconnected miniature circuit breaker that divides.
Background
The miniature circuit breaker is suitable for protecting overload and short circuit of a line with rated voltage of 230/400V and rated current of 50/60Hz and 63A, and can also be used for infrequent operation and conversion of the line under normal conditions. The method is mainly used in various places such as industrial, commercial, high-rise and civil houses. The existing miniature circuit breaker fixes the wire in the wiring frame through a wiring screw, and the wiring and the disconnection are complicated, time-consuming and labor-consuming. And the arc extinguishing effect of the miniature circuit breaker is poor, so that the breaking capacity of the miniature circuit breaker is low. And the miniature circuit breaker also has the defects of complex structure, unreliable performance and inconvenient assembly.
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 wiring is convenient, the convenient high branch divides disconnected miniature circuit breaker of assembly.
In order to achieve the above object, the present invention provides a high breaking miniature circuit breaker, which comprises a housing, an operating mechanism, a moving contact, a static contact, an arc extinguishing chamber, an arc striking plate, a first terminal assembly electrically connected to the static contact, and a second terminal assembly electrically connected to the moving contact, wherein the static contact is provided with a static contact matched with the moving contact, one end of the static contact extends towards the first terminal assembly and forms a wiring portion, a wire is connected between the wiring portion and the first terminal assembly, the other end of the static contact is formed with a bent arc striking portion, the tail of the bent arc striking portion extends right above the arc extinguishing chamber, a set of arc isolating assemblies are respectively arranged at two sides of the corresponding bent arc striking portion in the housing, and an arc extinguishing channel communicated between the moving contact and the arc extinguishing chamber is formed between the two sets of arc isolating assemblies, the flash barrier subassembly including setting up flash barrier on shells inner wall, setting up the magnetic conduction piece on the flash barrier, the flash barrier on be provided with the draw-in groove, the magnetic conduction piece block in the draw-in groove, and constitute the joint cooperation of magnetic conduction piece and flash barrier.
The beneficial effect of above-mentioned structure is: the arc isolating components are arranged on two sides of the bent arc-striking portion respectively, the magnetic conducting pieces on the arc isolating components can play a magnetic blowing role, electric arcs can be quickly introduced into the arc extinguishing chamber, the arc extinguishing effect is enhanced, the breaking capacity of the miniature circuit breaker is improved, and the static contact and the first wiring terminal component are integrated in a modular structure design, so that the modular assembly of the static contact and the first wiring terminal component can be realized, and the assembly is more convenient. Therefore, the miniature circuit breaker has the advantages of simple structure, stable and reliable performance, convenience in assembly and high breaking capacity.
Particularly, the first wiring terminal component comprises a wiring board arranged in the shell and connected with the wire and a spring plate arranged in the wiring board, wherein one end of the spring plate is provided with a bending part, the bending part is abutted against a convex block in the wiring board, an inserting space is formed between the bending part and the convex block, and a wiring jack is arranged on the shell corresponding to the inserting space. The elastic sheet is arranged on the wiring board, and the inserting space is formed between the elastic sheet and the wiring board, so that the first wiring terminal component and the wire can be inserted, and the wiring is more convenient.
Particularly, the other end of the elastic sheet is provided with a positioning hole, a boss matched with the positioning hole is arranged in the wiring board, and the boss is clamped in the positioning hole and forms clamping matching of the elastic sheet and the wiring board. The elastic sheet is clamped on the wiring board, so that the assembly of the elastic sheet and the wiring board is facilitated, and the assembly is more convenient.
Drawings
Fig. 1 is a perspective view of the internal structure of the embodiment of the present invention.
Fig. 2 is an internal structure diagram of the embodiment of the present invention.
Fig. 3 is an assembly view of the first connecting terminal assembly and the stationary contact according to the embodiment of the present invention.
Fig. 4 is a cross-sectional view of the first connecting terminal assembly and the stationary contact according to the embodiment of the present invention.
Fig. 5 is a perspective view of an arc barrier according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1 to 5, an embodiment of the present invention is a high breaking miniature circuit breaker, including a housing 10, an operating mechanism 11, a moving contact 12, a static contact 13, an arc extinguishing chamber 14, an arc striking plate 15, a first terminal assembly 20 electrically connected to the static contact 13, and a second terminal assembly 16 electrically connected to the moving contact 12, wherein the static contact 13 is provided with a static contact 131 matched with the moving contact 12, one end of the static contact 13 extends toward the first terminal assembly 20 and is formed with a wiring portion 132, a wire 17 is connected between the wiring portion 132 and the first terminal assembly 20, the other end of the static contact 13 is formed with a bent arc striking portion 133, the tail of the bent arc striking portion 133 extends directly above the arc extinguishing chamber 14, two sides of the bent arc striking portion 133 in the housing 10 are respectively provided with a set of arc isolating assemblies 30, an arc extinguishing channel 300 is formed between the two sets of arc isolating assemblies 30 and communicates with the moving contact 12 and the arc extinguishing chamber 14, the flash barrier subassembly 30 including setting up flash barrier 31 on the casing 10 inner wall, setting up the magnetic conductive plate 32 on flash barrier 31, flash barrier 31 on be provided with draw-in groove 311, magnetic conductive plate 32 block in draw-in groove 311, and constitute magnetic conductive plate 32 and flash barrier 31's joint cooperation.
As shown in fig. 2 to 4, the first terminal assembly 20 includes a terminal plate 21 disposed in the housing 10 and connected to the wires 17, and a spring plate 22 disposed in the terminal plate 21, wherein one end of the spring plate 22 has a bent portion 221, the bent portion 221 abuts against a bump 211 in the terminal plate 21, an insertion space 200 is formed between the bent portion 221 and the bump 211, and a terminal insertion hole 101 is disposed on the housing 10 corresponding to the insertion space 200. The elastic sheet is arranged on the wiring board, and the inserting space is formed between the elastic sheet and the wiring board, so that the first wiring terminal component and the lead can be inserted, and the wiring is more convenient. The other end of the elastic sheet 22 is provided with a positioning hole 222, a boss 212 matched with the positioning hole 222 is arranged in the wiring board 21, and the boss 212 is clamped in the positioning hole 222 and forms clamping matching of the elastic sheet 22 and the wiring board 21. The elastic sheet is clamped on the wiring board, so that the assembly of the elastic sheet and the wiring board is facilitated, and the assembly is more convenient.
The arc isolating components are arranged on two sides of the bent arc-striking portion respectively, the magnetic conducting pieces on the arc isolating components can play a magnetic blowing role, electric arcs can be quickly introduced into the arc extinguishing chamber, the arc extinguishing effect is enhanced, the breaking capacity of the miniature circuit breaker is improved, and the static contact and the first wiring terminal component are integrated in a modular structure design, so that the modular assembly of the static contact and the first wiring terminal component can be realized, and the assembly is more convenient. Therefore, the miniature circuit breaker has the advantages of simple structure, stable and reliable performance, convenience in assembly and high breaking capacity.
Claims (3)
1. The utility model provides a high breaking miniature circuit breaker, includes casing, operating device, moving contact, static contact, explosion chamber, arc striking piece, the first wiring terminal subassembly of being connected with the static contact electricity, the second wiring terminal subassembly of being connected with the moving contact electricity, its characterized in that: the static contact is provided with a static contact matched with the movable contact, one end of the static contact extends towards the first wiring terminal assembly and is provided with a wiring portion, a conducting wire is connected between the wiring portion and the first wiring terminal assembly, the other end of the static contact is provided with a bending arc-leading portion, the tail of the bending arc-leading portion extends to a position right above the arc extinguish chamber, a group of arc-isolating assemblies are respectively arranged on two sides of the corresponding bending arc-leading portion in the shell, an arc extinguishing channel communicated between the movable contact and the arc extinguish chamber is formed between the two groups of arc-isolating assemblies, each arc-isolating assembly comprises an arc-isolating plate arranged on the inner wall of the shell and a magnetic conductive sheet arranged on the arc-isolating plate, a clamping groove is formed in each arc-isolating plate, and the magnetic conductive sheets are clamped in the clamping grooves and form clamping matching of the magnetic conductive sheets and the arc-isolating plates.
2. A high breaking miniature circuit breaker according to claim 1 wherein: the first wiring terminal component comprises a wiring board arranged in the shell and connected with a wire and a spring plate arranged in the wiring board, wherein a bending part is arranged at one end of the spring plate and is abutted against a convex block in the wiring board, a splicing space is formed between the bending part and the convex block, and a wiring jack is arranged at the position, corresponding to the splicing space, of the shell.
3. A high breaking small size circuit breaker according to claim 2, wherein: the other end of the elastic sheet is provided with a positioning hole, a boss matched with the positioning hole is arranged in the wiring board, and the boss is clamped in the positioning hole and forms clamping matching of the elastic sheet and the wiring board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220811066.9U CN217114275U (en) | 2022-04-08 | 2022-04-08 | High-breaking small circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220811066.9U CN217114275U (en) | 2022-04-08 | 2022-04-08 | High-breaking small circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217114275U true CN217114275U (en) | 2022-08-02 |
Family
ID=82580960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220811066.9U Active CN217114275U (en) | 2022-04-08 | 2022-04-08 | High-breaking small circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217114275U (en) |
-
2022
- 2022-04-08 CN CN202220811066.9U patent/CN217114275U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |