Internal circuit fixing structure for circuit breaker

Abstract

The invention relates to an internal circuit fixing structure for a circuit breaker. The internal circuit fixing structure comprises a housing, wherein a circuit cavity is formed in the housing; two external circuit mechanisms are symmetrically arranged on the upper side and the lower side of the circuit cavity; an internal circuit mechanism is fixedly arranged in the circuit cavity and comprisesa fixed column; one end of the fixed column is fixedly connected to the inner wall of the circuit cavity, and the other end of the fixed column is fixedly connected to the outer wall of a vertically arranged connecting cylinder; the connecting cylinder is vertically hollow; the middle lower section in the connecting cylinder is connected with a sliding sleeve in a sliding manner; a first contact is arranged in the sliding sleeve in a penetrating manner and can be in contact with a second contact on the middle upper section in the connecting cylinder through an elastic sliding device; and a cover plate is buckled on the front side of the housing. The internal circuit fixing structure for the circuit breaker is simple and reasonable in structure, and the operation track of the contacts can be effectively prevented from deviating.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, and relates to a circuit breaker internal circuit fixing structure. Background technique [0002] A circuit breaker refers to a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. The circuit breaker is connected to a power line In the middle position, the circuit breaker cuts off and connects the load circuit, which can cut off the faulty circuit, and then prevent the expansion of the accident and ensure the safe operation of the circuit. The inside of the circuit breaker controls the connection of the circuit through the internal circuit mechanism. The circuit breaker in the prior art The internal circuit mechanism connects the two ends of the power line through two contacts, and controls the contact and separation of the contacts to achieve the effect ...

AI Technical Summary

Problems solved by technology

[0002] A circuit breaker refers to a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. The circuit breaker is connected to a power line In the middle position, the circuit breaker cuts off and connects the load circuit, which can cut off the faulty circuit, and then prevent the expansion of the accident and ensure the safe operation of the circuit. The inside of the circuit breaker controls the connection of the circuit through the internal circuit mechanism. The circuit breaker in the prior art The internal circuit mechanism connects the two ends of the power line through two contacts, and controls the contact and separation of the contacts to achieve the effect of controlling the opening and closing of the circuit. The contacts are divided into moving contacts and static contacts, and the moving contacts pass through The way of rotation is in contact with the static contact. After long-term use, the contact of this kind of contact may cause the running track of the moving contact to deviate, and then the two contacts cannot be contacted, which will cause the circuit breaker to fail to work normally.

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