Relay with arc quenching devices

Abstract

The invention relates to a relay with arc quenching devices. The relay comprises a substrate, a coil, an armature, sliders, moving contacts and fixed contacts, wherein the fixed contacts are arranged on the substrate; the sliders are arranged on the armature; the moving contacts corresponding to the fixed contacts are arranged on the sliders; a through arc quenching placing cavity is formed on the substrate and is arranged on one side of the fixed contacts, corresponding to the moving contacts; arc quenching devices are arranged in the arc quenching placing cavity; the arc quenching placing cavity extends toward the moving contacts along the fixed contacts to form an arc quenching chamber; and points of the moving and fixed contacts are arranged in the arc quenching chamber. The relay has the following beneficial effects that: the arc quenching devices are arranged near the moving and fixed contacts of the relay, so that the arc generated when the moving and fixed contacts are pulled in and disconnected is quickly adsorbed and quenched to prevent the contacts from being burnt down, thus greatly prolonging the service life of the relay.

Description

technical field [0001] The invention relates to a relay, in particular to a relay with an arc extinguishing device. Background technique [0002] A relay is generally composed of an iron core, a coil, an armature, a moving contact, a static contact, etc. As long as a certain voltage is applied to both ends of the coil, a certain current will flow through the coil, thereby generating an electromagnetic effect, and the armature will Under the action of electromagnetic force attraction, it overcomes the pulling force of the return spring and attracts to the iron core, thereby driving the movable contact and the static contact to attract. When the moving contact and static contact of the relay are in contact, an arc will be generated. Especially for a high-power relay, the arc generated by the contact between the internal moving contact and the static contact will burn the contact and shorten the service life of the relay. It is reduced or even unable to use normally, and the r...

AI Technical Summary

Problems solved by technology

When the moving contact and static contact of the relay are in contact, an arc will be generated. Especially for a high-power relay, the arc generated by the contact between the internal moving contact and the static contact will burn the contact and shorten the service life of the relay. Reduced or even unable to use normally, unable to use relays to switch high-power loads

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