Reed rotating axis locking mechanism

Abstract

The invention belongs to low voltage electric equipment, it relates to a reed rotating axes locking device which is used in low voltage breaker. The device includes the rotating axes base equipped with breaker and acting contactor which is mounted in the cavum of the rotating axes base, the acting contactor possesses a pair of rotating arm which can rotate around the core of the rotating axes base, contacting point is set at front end of the rotating arm; two reeds are set in position which is corresponding with two rotating arms, the rear end of the reed are limited on the rotating axes base, the front segment of the reed is a bend segment which bends to the center of the rotating axes, compressed elastic is set between the bend segments; sliding axes is fixed at the rotating arm, the sliding axes is pressed to outer side of the reed. The invention is simple, convenient to assembly, reliable to use.

Description

technical field [0001] The invention belongs to low-voltage electrical equipment, and relates to a reed type rotating shaft clamping mechanism used in a low-voltage circuit breaker. Background technique [0002] During the working process of ordinary low-voltage circuit breakers, when there is a large fault short-circuit current in the line, before the operating mechanism operates, the moving contacts should be repelled in advance to overcome the contact pressure under the force of the electric repulsion force, and the rotating shaft is stationary. move. The function of the locking mechanism of the rotating shaft is to make the moving contact stay at the maximum position after the moving and static contacts are separated to the maximum opening distance until the operating mechanism is released under the action of the release, so as to avoid the moving contact due to The fault short-circuit current decreases and the drop causes the arc to reignite. The existing locking mech...

AI Technical Summary

Problems solved by technology

The existing locking mechanism of the rotating shaft of the circuit breaker generally has two forms: one form is the moving contact cam structure, which is when the moving contact is repelled, the cam surface is locked by the action shaft, and the locking structure is simple, but The reliability is low; the other form is the connecting rod structure, and the connecting rod moves back and forth between the dead points. This form of stuck structure has complex structure, high process requirements and difficult installation.

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