Multi-contact independent movement structure

Abstract

The invention discloses a multi-contact independent movement structure which comprises two first contacts and at least one second contact which are rotatably arranged on a rotating shaft structure through a first rotating shaft, and a contact sleeve structure is rotatably arranged between the two first contacts and the second contact through the first rotating shaft. The contact sleeve structure movably sleeves and surrounds the second contact and adjacently separates the two first contacts from the second contact, and a driving piece used for driving the contact sleeve structure to rotate is arranged between at least one first contact or second contact and the contact sleeve structure in a penetrating manner. Through the contact sleeve structure, the plurality of contacts can be ensured to keep verticality to the greatest extent without lateral deviation, the motion independence among the plurality of contacts is not influenced, and the total current-carrying area of the contacts is ensured after the plurality of contacts are adjacently separated by the contact sleeve structure, so that the current-carrying capacity of the moving contact assembly is improved, and the service life of the moving contact assembly is prolonged. And the use performance and the maximum rated current of the product are improved.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a multi-contact independent movement structure. Background technique [0002] A low-voltage circuit breaker is a switch used in power distribution circuits and various types of electrical equipment protection circuits that can not only connect, carry and break current under normal circuit conditions, but also prevent electrical equipment from being damaged by overload and short-circuit faults. electrical appliances. Among them, the contact system is an important part of the low-voltage circuit breaker. Its performance parameters and operational performance directly affect the various technical indexes of the circuit breaker, especially for high-current low-voltage circuit breakers. The initial pressure and final pressure of the contact will affect the performance of the product. Temperature rise, service life and breaking capacity. [0003] The maximum rated current of...

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the separator in the prior art is installed between two adjacent contact fingers through two cylinders. The fingers in the middle part move together, so the movement independence of the fingers in the middle part cannot be truly achieved, which affects the performance of the product

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