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Moving contact assembly of molded case circuit breaker

A molded case circuit breaker and moving contact technology, which is applied to circuit breaker parts, circuit breaker contacts, contacts, etc., can solve the problems of damage to molded case circuit breakers and load equipment, arc generation, etc., and maintain contact pressure. Effect

Inactive Publication Date: 2011-06-22
SHANGHAI RENMIN ELECTRICAL APP WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in re-contact between contacts and re-separation between them in the event of a short circuit, which continuously arcs and can cause serious damage to the molded case circuit breaker and load equipment

Method used

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  • Moving contact assembly of molded case circuit breaker
  • Moving contact assembly of molded case circuit breaker
  • Moving contact assembly of molded case circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Such as Figure 1-5 As shown, a moving contact assembly of a molded case circuit breaker includes a rotating shaft 10, a moving contact 20, a pair of connecting rods 51 and a pair of springs 41. The opening 11 that allows the movable contact 20 to rotate independently during flow operation and a pair of symmetrically arranged arc-shaped linear motion guide grooves 13 for supporting the movable contact 20 in a rotatable manner. The movable contact 20 passes through a rotating shaft 26 Rotationally connected with the rotating shaft 10, the two ends of the moving contact 20 are protruded outside the opening 11 of the rotating shaft, and a moving contact 21 is symmetrically provided at both ends, and the pair of connecting rods 51 are symmetrically arranged, each connecting One end of the rod is connected to both sides of the movable contact 20, and the other end i...

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Abstract

A moving contact assembly of a molded case circuit breaker comprises a rotary shaft rod, a moving contact, a pair of connecting rods and a pair of springs, wherein the rotary shaft is provided with an opening and a pair of symmetrically arranged arc-shaped linear movement guide grooves; the moving contact is rotationally connected with the rotary shaft rod through a rotary shaft; the two ends of the moving contact lean out of the opening of the rotary shaft rod; the two ends are respectively provided with a moving contact; the pair of connecting rods are symmetrically arranged; one end of each connecting rod is connected with the two side surfaces of the moving contact while the other end is connected with a sliding pin, wherein the two ends of the sliding pin pass through the arc-shaped linear movement guide groove and span the two side surfaces of the rotary shaft rod; and the pair of springs are symmetrically arranged on the two side surfaces of the rotary shaft rod; the two ends of the pair of springs are respectively connected with the two sliding pins. Compared with the prior art, the moving contact assembly of a molded case circuit breaker provided by the present invention can rapidly finish circuit transformation with high efficiency.

Description

technical field [0001] The invention relates to a molded case circuit breaker assembly, in particular to a movable contact assembly of a molded case circuit breaker. Background technique [0002] The moving contact assembly of the molded case circuit breaker in the prior art has the following problems. When the movable contact is separated from the stationary contact, the elastic restoring force of the spring increases, and thus the movable contact comes into contact with the stationary contact again due to the restoring force. This results in recontact between contacts and reseparation between contacts in the event of a short circuit, continuously generating arcs and can lead to serious damage to the molded case circuit breaker and load equipment. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a moving contact assembly of a molded case circuit breaker in order to overcome the above-mentioned defects in the pri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H73/04
CPCH01H1/2008H01H1/205
Inventor 李鸣廉
Owner SHANGHAI RENMIN ELECTRICAL APP WORKS
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