Large-power direct-current relay

Abstract

The invention discloses a large-power direct-current relay. The relay comprises a housing body, a transmission assembly arranged in the housing body, a static spring and a moving spring. A static contact point is arranged on the static spring. A moving contact point is arranged on the moving spring. The output end of the transmission assembly is connected with the moving spring to push the movingcontact point on the moving spring to move towards the static contact point on the static spring. The relay also comprises a group of flexible anti-electric arc assemblies. The flexible anti-electricarc assemblies are arranged between the static contact point and the moving contact point, are in contact connection with the moving spring, and move towards the outside of two ends of the moving spring. When the moving contact and static contact are separated, the flexible anti-electric arc assemblies move to the place between the moving contact and the static contact, thereby achieving arc distinguishing and electric arc separation. According to the invention, the relay is simple in structure; distinguishing of electric arcs generated by the static contact and the moving contact of the relayis achieved; and service lifetime of the relay is prolonged.

Description

technical field [0001] The invention relates to the technical field of relay equipment, in particular to a high-power DC relay. Background technique [0002] During the use of the relay, an arc will be generated when the moving contact and the static contact are opened and closed, and the arc is a gas discharge phenomenon, and the instantaneous spark generated by the current passing through some insulating medium (such as air). The arc will cause loss to the contacts of the relay, which will greatly shorten the service life of the relay and increase the cost of use. The existing arc extinguishing methods include creating a vacuum environment, increasing the distance between dynamic and static contacts, adding arc extinguishing grids, filling inert gas, increasing the moving speed of the moving spring, and using magnetic blowing, etc. These methods have the advantages of increasing the volume of the relay. , manufacturing is cumbersome, reduces the sensitivity of the relay o...

AI Technical Summary

Problems solved by technology

The arc will cause loss to the contacts of the relay, which will greatly shorten the service life of the relay and increase the cost of use

The existing arc extinguishing methods include creating a vacuum environment, increasing the distance between dynamic and static contacts, adding arc extinguishing grids, filling inert gas, increasing the moving speed of the moving spring, and using magnetic blowing, etc. These methods have the advantages of increasing the volume of the relay. , manufacturing is cumbersome, reduces the sensitivity of the relay or greatly increases the defect of manufacturing cost

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