Circuit breaker operating mechanism and circuit breaker

Abstract

The invention provides a circuit breaker operating mechanism and a circuit breaker. The circuit breaker operating mechanism comprises a moving contact, a bias member which abuts against the moving contact, a driving assembly connected with the moving contact and used for driving the moving contact to overcome the bias force of the bias member and move from a switching-off position to a switching-on position; and a lock catch rotatably arranged on a shell, connected with the driving assembly, and provided with a first action position and a second action position. At the first action position, the lock catch is driven by the driving assembly to act. At the second action position, the lock catch is driven by a safety actuating assembly to push the driving assembly to move, so that the drivingassembly is separated from the moving contact. Due to the fact that the driving assembly directly applies a force to the moving contact, a contact support is omitted. The lock catch is driven by thedriving assembly to rotate, so that a lock catch spring is omitted. Therefore, compared with the prior art, the number of force application parts is reduced, and the production cost is reduced. The assembling operation is faster and more convenient.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a circuit breaker operating mechanism and a circuit breaker. Background technique [0002] Miniature circuit breakers refer to protective appliances installed on terminal distribution lines, mainly used for overload and short circuit protection of lines and electrical equipment. Miniature circuit breakers are generally composed of operating mechanism, electromagnetic tripping mechanism, thermal tripping mechanism, arc extinguishing mechanism, etc. The operating mechanism refers to the components used to open and close the circuit breaker. The operating mechanism must not only ensure the reliable closing of the circuit breaker, but also ensure the rapid opening of the circuit breaker under fault conditions. The performance of the operating mechanism directly affects the miniature circuit breaker. function. [0003] Chinese patent document CN208225826U discloses a small c...

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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the circuit breaker operating mechanism in the prior art, which have many force-applying parts, simple structure, and high production cost, so as to provide a circuit breaker with few force-applying parts, simple structure, and low production cost. The operating mechanism of the circuit breaker, and the circuit breaker provided with the operating mechanism of the circuit breaker

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