Miniature circuit breaker

Abstract

The invention relates to the field of low-voltage electrical appliances, in particular to a miniature circuit breaker including a button mechanism, a circuit breaker casing and an anti-closing mechanism. The button mechanism is disposed at one end of the circuit breaker casing and is in sliding fit with the circuit breaker casing. The anti-closing mechanism comprises a first locking member pivotally disposed on the circuit breaker casing. One end of the first locking member is in locking fit with the button mechanism to block the button mechanism from moving in the closing direction. After theminiature circuit breaker is assembled to the circuit breaker assembly position in place, the casing at the circuit breaker assembly position acts on the first locking member so that the button mechanism can move in the closing direction to perform the closing operation after the first locking member is released from the locking fit with the button mechanism. The anti-closing mechanism of the miniature circuit breaker ensures that the miniature circuit breaker can be closed only after assembled to the circuit breaker assembly position and assembled in place, so that the use safety is ensured.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, in particular to a small circuit breaker. Background technique [0002] The use of circuit breakers can effectively improve the safety and reliable operation of electrical equipment. In order to meet the installation needs of different electrical equipment, miniature circuit breakers, as an important type of circuit breaker, have various structures and tend to be miniaturized as a whole. Most of the existing miniature circuit breakers have the following problems: [0003] 1. When the miniature circuit breaker is installed, if the installation is not in place, the closing operation will bring great safety hazards. However, the existing miniature circuit breaker does not have an anti-closing mechanism, which cannot indicate whether the circuit breaker is installed in place. [0004] 2. The existing small circuit breakers that perform opening / closing operations through the button me...

AI Technical Summary

Problems solved by technology

[0003] 1. When the small circuit breaker is installed, if the installation is not in place, the closing operation will bring great safety hazards. However, the existing small circuit breaker does not have an anti-closing mechanism, which cannot indicate whether the circuit breaker is installed in place

[0004] 2. The existing small circuit breakers that perform opening / closing operations through the button mechanism all perform the closing operation by pressing the button mechanism, and perform the opening operation by pulling the button mechanism; when performing the opening operation, if the user pulls the If the pulling force is too large, the miniature circuit breaker will be pulled out from the assembly position of the circuit breaker by mistake, which is not conducive to ensuring the reliability and working stability of the miniature circuit breaker assembly, and there are also potential safety hazards

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