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Arc extinguishing structure in miniature circuit breaker

A small circuit breaker and arc extinguishing technology, applied to circuit breaker parts and other directions, can solve the problems of long arc flashover distance, increase the overall size of the circuit breaker, etc., to increase the creepage distance, good arc extinguishing effect, and save space. Effect

Pending Publication Date: 2020-07-24
HAIYAN ZHONGXIN ELECTRONICS
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Although this patent can improve the arc extinguishing performance of the circuit breaker, the arc outlet is set on the back plate, which can only prevent the arc from breaking down and restarting to a certain extent, and the arc flashover distance of this design is long, which increases the overall size of the circuit breaker. size, so it still has the above defects

Method used

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  • Arc extinguishing structure in miniature circuit breaker
  • Arc extinguishing structure in miniature circuit breaker
  • Arc extinguishing structure in miniature circuit breaker

Examples

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Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0020] Example.

[0021] see Figure 1 to Figure 6 The arc extinguishing structure in the miniature circuit breaker of this embodiment includes a supporting piece 1 and a plurality of arc extinguishing grids 2, the supporting piece 1 and the multiple arc extinguishing grids 2 are matched with each other, and arc outlets 3 are arranged on both sides of the supporting piece 1, The arc outlets 3 on both sides are arranged in a staggered manner.

[0022] In this embodiment, the arc extinguishing grids 2 are sheet-like structures, and each arc extinguishing grid 2 is provided with an arc striking groove 4, and the arc striking groove 4 changes from narrow to wide, that is, from the inside to the outside from the narrow ...

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Abstract

The invention relates to an arc extinguishing structure in a miniature circuit breaker, which belongs to the field of circuit breakers. The arc extinguishing device comprises a supporting piece and aplurality of arc extinguishing grid pieces. The supporting piece matches the arc extinguishing grid pieces, Arc outlets are formed in the two sides of the supporting piece, and the arc outlets in thetwo sides are arranged in a staggered mode. The arc extinguishing structure is simple and reasonable in overall structural design, safe, reliable, space-saving and good in arc extinguishing effect, and the service life of the circuit breaker is prolonged.

Description

technical field [0001] The invention relates to an arc extinguishing structure, in particular to an arc extinguishing structure in a small circuit breaker, which belongs to the field of circuit breakers. Background technique [0002] The outlet of the existing arc extinguishing device of the circuit breaker is set directly behind the arc inlet, which can only avoid the breakdown and re-ignition of the arc to a certain extent, and the arc flashover distance of this design is long, so it needs to be designed behind the arc extinguishing device The arc channel increases the overall size of the circuit breaker; and the structure and arc extinguishing performance of the arc extinguishing chamber of the circuit breaker become the key issues to realize the miniaturization and electrical performance of the circuit breaker. [0003] The publication date is May 25, 2016, and the Chinese patent publication number 105609387A discloses an invention patent named "a small circuit breaker a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H73/18
CPCH01H73/18
Inventor 杜战吴金良
Owner HAIYAN ZHONGXIN ELECTRONICS
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