Long-break-distance contact structure capable of breaking rapidly

Abstract

The invention relates to a long-break-distance contact structure capable of breaking rapidly. The long-break-distance contact structure mainly solves the technical problem that when breaking is performed on an existing contact structure, due to limit of an operation mechanism structure, the breaking capacity of the contact structure is affected. The contact structure comprises a base, an operation mechanism, a moving contact and a fixed contact. A supporting part is installed on the base, the fixed contact and the moving contact can both rotate by a certain angle, a rotating part is connected with the fixed contact through a transmission part, and the rotating part rotates to drive the fixed contact synchronously through the transmission part to rotate in the rotating direction opposite to the moving contact so as to form mutual joint or separation. Due to the fact that the structure distribution mode that the moving contact and the fixed contact move simultaneously is adopted in the contact structure, during opening, the moving contact and the fixed contact rotate in the opposite directions at the same time, the breaking speed between the moving contact and the fixed contact is improved, the maximum contact break distance between the moving contact and the fixed contact can be increased, and therefore the breaking speed of the contact structure is effectively improved. The long-break-distance contact structure has the advantages of being simple in structure, high in reliability and rapid in breaking speed.

Description

technical field [0001] The invention belongs to the technical field of low-voltage electrical appliances, and particularly relates to a large-distance contact structure that can be broken quickly. Background technique [0002] At present, the contact structure of the single break point of low-voltage circuit breakers is basically that the movable contact is movable, and the static contact is completely fixed. When breaking the current, the action of the operating mechanism is mainly used to drive the moving contact to move and break the current. The breaking speed of the breaker is limited by the action time of the operating mechanism, so the improvement of the breaking capacity is also limited; and the connecting rod structure of the operating mechanism of the circuit breaker basically determines the total moving stroke of the moving contact of the circuit breaker, that is, determines the maximum of the circuit breaker. Therefore, increasing the maximum contact spacing of t...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies and defects in the background technology, the present invention provides a large-distance contact structure that can be broken quickly, which is to solve the problem of breaking the existing contact mechanism. Due to the limitation of the structure of the operating mechanism, its breaking capacity is affected, so increase the breaking speed and increase the maximum opening distance between dynamic and static touches

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