Electromagnetic relay

Abstract

The invention discloses an electromagnetic relay, and the electromagnetic relay comprises a magnetic circuit system, a contact system, a push card, a substrate, and a housing. The electromagnetic relay is characterized in that the electromagnetic relay also comprises a normally-opened auxiliary contact system; the normally-opened auxiliary contact system comprises an auxiliary lower contact, an auxiliary lower elastic piece, an auxiliary upper contact, and an armature elastic piece; and a moving elastic piece positioning terminal is provided with a small convex hull at one side of a moving contact piece; An elastic force of an elastic piece of the auxiliary contact system is used for increasing a force during the disconnection of the contact system, and the moving elastic piece positioning terminal is provided with the small convex hull at one side of the moving contact piece, wherein the small convex hull can enable the moving elastic piece to generate elastic deformation after the moving elastic piece is riveted to the moving elastic piece positioning terminal. In other words, a pre-pressure is applied to the elastic piece positioning terminal, and the contact pressure is enabled to quickly increase to the pre-pressure during suction when the contact just makes contact; similarly, the contact pressure will quickly decrease to zero from the pre-pressure when the contact is about to be cut off, thereby reducing the ablation time when the contact resistance approaches to zero, and releasing the bounce.

Description

technical field [0001] The invention relates to an electromagnetic relay, in particular to an electromagnetic relay with compact structure, quick contact breaking, quick arc extinguishing, and quick contact pull-in or break-off. Background technique [0002] Relay is an automatic switching element with isolation function, which is widely used in communication, automobile, automatic control, household appliances and other fields. It is one of the most important control elements. The contact system is an important part of the relay, its performance affects the life and safety of the product, and arc ablation is the biggest culprit for damaging the contact system. The arc extinguishing effect is not good due to the delay of power failure of the instantaneous moving contact and the static contact. In view of the above problems, it is necessary to study an electromagnetic relay that overcomes the above problems. Contents of the invention [0003] The technical problem to be s...

AI Technical Summary

Problems solved by technology

The contact system is an important part of the relay, its performance affects the life and safety of the product, and arc ablation is the biggest culprit for damaging the contact system. The arc extinguishing effect is not good due to the power-off delay of the instantaneous moving contact and the static contact. In view of the above problems, it is necessary to study an electromagnetic relay that overcomes the above problems.

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