Anti-rebound device for universal low-voltage circuit breaker

Abstract

The invention discloses an anti-rebound device for a universal low-voltage circuit breaker. The anti-rebound device comprises a crank, a connecting rod, a buckle and a stopping rod, and is arranged ona side plate. The side plate is further provided with a turning-on half shaft and an upper connecting rod. The crank is in an L shape and one end of the crank is connected with the turning-on half shaft. The connecting rod is inclined, and the middle portion of the connecting rod is rotatably disposed on the side plate. The middle of the buckle is rotatably disposed on the side plate. The stopping rod is rotatably disposed on the side plate. The anti-rebound device of the universal low-voltage circuit breaker drives a stopping mechanism through the stopping mechanism and a series of connecting rods, so as to prevent the rebound of a moving contact when the circuit breaker is turned off, thereby effectively realizing the anti-rebound purpose and prolonging the service life.

Description

technical field [0001] The invention relates to an anti-rebound device of a universal low-voltage circuit breaker. Background technique [0002] In low-voltage power distribution appliances, universal circuit breakers (hereinafter referred to as circuit breakers) are used to distribute electric energy and protect lines and equipment from overload, short circuit, single-phase grounding and other faults, so as to ensure the reliability and safety of the power supply system. With the increase of power consumption and the emergence of more and more high-power loads, the requirements for various indicators of circuit breakers are constantly improving, especially in order to realize the selective protection of the system, it is even more required to improve the short-term resistance indicators of circuit breakers. To improve the short-term withstand performance while maintaining or even reducing the volume of the circuit breaker, most of the industry adopts the method of increasin...

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Problems solved by technology

[0003] see figure 1 , in the prior art, a cantilever 3' is fixedly mounted on the front position of the inner surface of the side plate, and a throwing block 1' is hinged on the surface of the cantilever 3', and the throwing block 1' can rotate along the surface of the cantilever', and through the throwing block 1' The impact with the limit shaft 2' consumes energy to reduce the rebound of the moving contact. This anti-rebound method reduces the rebound and the life is not high.

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