Switching-on and switching-off indicating device of circuit breaker

Abstract

The invention discloses a switching-on and switching-off indicating device of a circuit breaker. The device comprises an indication part rotatably arranged on a mounting part of a circuit breaker shell, a reset structure arranged between the indication part and the mounting part, and a driving rod which is arranged in the circuit breaker shell in a reciprocating motion manner and is driven by a contact mechanism, further comprises an elastic transmission part which is connected with the driving rod and the indication part, and the indication part is driven by the elastic transmission part to trigger a signal indication switch to be turned on or turned off when the driving rod reciprocates towards or away from the elastic transmission part. The device is advantaged in that movement and force are transmitted between the driving rod and the indication part through the elastic transmission part, stress buffering is achieved, transmission efficiency is high, the motion stroke of the drivingrod is improved, the condition that the motion stroke of opening and closing of a contact mechanism is large can be met, opening and closing signals of a circuit breaker are accurately and reliably outputted, and use performance of products is improved.

Description

technical field [0001] The invention relates to the technical field of low-voltage circuit breakers, in particular to an opening and closing indicating device for a circuit breaker. Background technique [0002] Molded case circuit breakers are often used as terminal switches or branch switches in low-voltage power distribution systems to protect power lines and mechanical equipment in real time. In order to better observe the working status of molded case circuit breakers, through The circuit breaker is equipped with an opening and closing indication device, which can display the opening and closing status of the circuit breaker according to the opening and closing actions of the moving contacts, so that the working status of the circuit breaker can be clearly judged when the line is inspected, maintained, and closed. Line safety and personnel safety. [0003] Chinese patent document CN2017517626U discloses a molded case circuit breaker with an electromechanical integrated...

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the possibility of impact damage or even fracture on the end of the rotating arm, and poor structural reliability of the opening and closing indicating device in the prior art. , and the problem that the travel range of the moving contact cannot be well satisfied, so as to provide a force buffer for the driving rod, a stable structure, and an opening and closing indicating device for a circuit breaker that can meet the larger travel of the contact mechanism

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