High-voltage DC relay movable reed anti-deflection mechanism

Abstract

The invention discloses a high-voltage DC relay movable contact spring deflection prevention mechanism, which comprises a movable contact spring. the movable contact spring is linked with a push rod; the upper section of the push rod is located above a yoke and is fixed with the movable contact spring; the yoke is provided with a positioning plate; reaction springs are connected between the left part of the movable contact spring and the positioning plate, and between the right part of the movable contact spring and the positioning plate; at least one of the hook at the upper end and the hook at the lower end of the reaction spring is fixed with a sliding rod; the hook can slide on the sliding rod; the sliding rod comprises an upper sliding rod fixed with the upper hook of the reaction spring and the lower sliding rod fixed with the lower hook of the reaction spring; the upper sliding rod is fixed with the movable contact spring; and the lower sliding rod is fixed with the positioning plate. The high-voltage DC relay movable contact spring deflection prevention mechanism has the advantages that the phenomenon that the movable contact spring deflects and thus a moving contact and a static contact can not be broken rapidly due to assembly can be avoided, and vertical movement of the push rod to drive the movable contact spring to deflect can be prevented.

Description

technical field [0001] The invention relates to a high voltage direct current relay. Background technique [0002] In the patent document of the applicant with the application number 201610276456.X, a relay that can prevent the horizontal deflection of the moving reed during use is disclosed. However, when the relay is assembling parts, the actual position of the moving reed after assembly often occurs. Inconsistency with the set position, that is, the position of the movable reed after assembly is deflected relative to the set position, so that the upper end of the return force spring is offset, and the force of the return force spring along the axis of the push rod changes, which will cause dynamic and static contact. If the point cannot be broken in time, it will affect the performance of the relay. Since the positioning plate is fixed with the yoke, the position of the lower end of the return force spring cannot be changed by rotating the yoke; To ensure that the dynam...

AI Technical Summary

Problems solved by technology

[0002] In the patent document of the applicant with the application number 201610276456.X, a relay that can prevent the horizontal deflection of the moving reed when in use is disclosed, but when the relay is assembling parts, the actual position of the moving reed after assembly often occurs. Inconsistency with the set position, that is, the position of the movable reed after assembly is deflected relative to the set position, so that the upper end of the return force spring is offset, and the force of the return force spring along the axis of the push rod changes, which will cause dynamic and static contact. If the point cannot be broken in time, it will affect the performance of the relay

Since the positioning plate is fixed with the yoke, the position of the lower end of the return force spring cannot be changed by rotating the yoke; To ensure that the dynamic and static contacts can be contacted in time (offset the tension of the increased return spring), it is also necessary to use a more powerful magnetic circuit, which greatly increases the cost of the relay

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