Contact structure of dual-power switch

Abstract

The invention discloses a contact structure of a dual-power switch. An operating mechanism drives an insulating rotating shaft to rotate for closing. A moving contact rotates along with the insulatingrotating shaft until the moving contact collides with a static contact assembly. The collision applies an acting force opposite to the rotating direction of the insulating rotating shaft to the moving contact. The acting force is conducted to a collision buffer mechanism through the moving contact. The eccentric pressure applied by an eccentric pressure piece is mutually counteracted. The movingcontact and the static contact assembly are kept in a joint state. The design has the advantage that the design has the advantage of being simple in structure, the width of the moving contact is smaller than that of the opening of the accommodating cavity; the moving contact can penetrate through the containing cavity and rotate around the positioning structure in the containing cavity, meanwhile,the opening width of the containing cavity further limits the rotating range of the moving contact, the collision buffering mechanism can counteract acting force generated when the moving contact collides with the static contact, springback of the moving contact is avoided, and the joint speed of a product is increased.

Description

technical field [0001] The invention relates to an electrical switchgear, in particular to a contact structure of a double power switch. Background technique [0002] The dual power switch is widely used in various places that require uninterrupted power supply, which realizes the automatic conversion of the load line between the two power sources to ensure the reliability of the user's power supply. [0003] Chinese patent document CN203070945U discloses a contact device for a dual power switch, including a V-shaped moving contact and a static contact, the static contact includes two contact pieces, and the moving contact includes two moving contact pieces , the moving contact is fixed on the insulated shaft controlled by the transmission mechanism, and the static contact includes a static contact a for the incoming line of the power supply, a static contact b for the incoming line of the standby power supply, and a static contact c for the outgoing line , the distance bet...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that there is a reaction force when the static contact and the moving contact collide, causing the moving contact to rebound and the joint speed is slow, thereby providing a contactor that can offset the static contact. The reaction force when the head and the moving contact collide, avoiding the rebound of the moving contact, and the contact structure of the dual power switch with fast engagement speed

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