Release armature of an electromagnetic release

Abstract

The invention relates to a release armature of an electromagnetic release, which is used in a circuit breaker. The release armature of an electromagnetic release comprises an armature basal body made of an iron magnetic material and a push rod, wherein the push rod is screwed on the armature basal body in a thread way and passes through the armature basal body, a soft ring is fixed on the end part of the armature basal body and connected with the armature basal body into a whole, and the internal hole of the soft ring is a little smaller than the diameter of a screw rod on the push rod to enable the thread on the push rod to be screwed into the soft ring and tightly packed by the internal hole of the soft ring to prevent the push rod from easily rotating, the soft ring is made of plastic or rubber, and the soft ring is fixedly embedded on the end part of the armature basal body. After the push rod with a thread is screwed into the armature basal body, the invention guarantees the position of the push rod to be set by regulation, and the set position of the push rod can not automatically change caused by vibration in work.

Description

technical field [0001] The invention relates to a tripping armature used for an electromagnetic tripper in a circuit breaker; the tripper is installed inside the circuit breaker as an optional part to detect the voltage signal of the circuit, and when receiving an action instruction, The electromagnetic tripper acts, pushes the circuit breaker to trip, and interrupts the circuit. Background technique [0002] Electromagnetic trip units used in circuit breakers usually consist of a trip armature with a push rod, a yoke, a trip coil, and an action amplification mechanism consisting of several levers. Wherein, both the tripping armature and the yoke are made of ferromagnetic material, they have a corresponding surface, and there is an air gap between them. When a large enough current flows through the tripping coil, the current generates a magnetic field in the ferromagnetic material, making the tripping armature made of ferromagnetic material move toward the yoke, eliminating...

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of the prior art is that due to the small volume of the electromagnetic release, the technical difficulty of injecting the adhesive is relatively large, and often due to deviations in the processing process, the ejector rod is not completely fixed on the armature base and loosens during work. , deviating from the original position; or due to adhesive overflow or heated flow sticking to other moving parts, the action of the release is blocked, thus affecting the normal operation of the release

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