Action mechanism used by residual current operated circuit breaker

Abstract

The invention provides an action mechanism for a residual current operated circuit board to use and a residual current operated circuit board. The action mechanism includes a left side plate and a right side plate, and the following mechanisms placed between the left side plate and the right side plate: a handle, a lock catch, a buckle, a first connecting rod, a second connecting rod, a cam and a buckle connecting rod. The handle, the cam, the lock catch and the buckle are rotatably arranged between the left side plate and the right side plate, a middle part of the buckle is a rotation center of the buckle, and the first connecting rod, the second connecting rod and the buckle connecting rod are all irregular rod-shaped members formed by winding of spring steel wires. When the action mechanism is switched on, the handle rotates, and the buckle is driven to rotate through the first connecting rod, the second connecting rod, the cam and the buckle connecting rod, thereby realizing meshing of the buckle and the lock catch. The first connecting rod, the second connecting rod and the buckle connecting rod are all irregular rod-shaped members formed by winding of spring steel wires, molds do not need to be made to machine parts, and thus the machining cost is low.

Description

technical field [0001] The invention relates to a residual current operated circuit breaker, in particular to an operating mechanism used in the residual current operated circuit breaker and the residual current operated circuit breaker. Background technique [0002] As we all know, in the terminal power distribution of the low-voltage power distribution system, it is necessary to install a residual current operated circuit breaker in order to quickly cut off the faulty power supply in a very short time and protect the safety of people and electrical equipment. [0003] Low-voltage residual current operated circuit breakers all need an action mechanism to control the closing and opening of the contacts, and when a residual current fault occurs in the circuit, the release in the circuit breaker acts on the action mechanism to automatically make the contacts of the circuit breaker From closed to open, so as to achieve fault protection. [0004] Chinese patent ZL 201520365068....

AI Technical Summary

Problems solved by technology

[0010] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an operating mechanism for a residual current operated circuit breaker and a residual current operated circuit breaker to solve the problem of the operating mechanism used for a residual current operated circuit breaker in the prior art. Make complex, costly problems

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