A low noise relay

Abstract

The invention provides a low-noise relay, which mainly comprises a base, an L-shaped yoke, an armature, a bobbin, a coil, an iron core, a movable contact spring, a fixed contact spring, a movable contact and a fixed contact, wherein a magnetic limiting groove is formed in the lower part of a vertical side of the L-shaped yoke; the iron core is in a stepped form; the axis diameter of one end, far away from the armature, of the iron core is the smallest; and the axis diameter of one end, close to the armature, of the iron core is the biggest. When the coil is electrified, magnetic flux generatedby the coil passes through the magnetic limiting groove and the stepped iron core, so that the electromagnetic force of the relay in later pickup can be greatly reduced on the premise of ensuring that the relay has enough electromagnetic force in early pickup through the magnetic flux path, thereby effectively reducing the noise of the relay at work.

Description

technical field [0001] The invention belongs to the technical field of relays, in particular to a low-noise relay. Background technique [0002] The relay mainly controls the switching of the circuit by controlling the pull-in and disconnection of the relay, and plays the role of a switch. Now a common relay, its composition includes connection base, L-shaped yoke, moving reed, armature, coil bobbin, coil, iron core, static contact, moving contact, static reed, coil control pin, etc. . The magnetic circuit system of this kind of relay is usually composed of an L-shaped yoke, an armature, a cylindrical iron core, a coil, and a coil bobbin. , the cylindrical iron core is fixedly connected with the transverse part of the yoke through the hole, and the shape of the moving reed is similar to L-shaped, and one end of it is fixedly connected with the vertical part of the yoke, and the other end is fixedly connected with the armature. When the coil is energized, the magnetic flux...

AI Technical Summary

Problems solved by technology

Although the relay using the above-mentioned magnetic circuit can also meet the general use requirements, however, during the pull-in process of this kind of relay, as the armature moves downward, the gap between the armature and the iron core gradually decreases, and there will be a gap near the top of the iron core. The phenomenon of magnetic saturation occurs, so that the electromagnetic force of the relay is very large when it is closed, so that the electromagnet will produce a lot of noise when it is closed.

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