Low-noise electromagnetic relay

Abstract

The invention discloses a low-noise electromagnetic relay, which comprises a magnetic circuit part and a contact part, and is characterized in that the magnetic circuit part comprises a horizontal coil unit, a yoke and an armature, the yoke and the armature are matched with the coil unit, the armature is connected with a movable spring of the contact part through a pushing clamp, and the armatureswings towards the pole surface of the yoke when being closed; the low-noise electromagnetic relay further comprises at least one noise reduction piece, each noise reduction piece comprises a fixing part and a first elastic buffer structure connected with the fixing part, the fixing parts are fixed to the yoke, and the first elastic buffer structures are arranged on the pole face of the yoke in amatched mode. The first elastic buffer structure can be used for eliminating the action noise of the armature, and the problems that the armature acts slowly and the silencing sheet falls off along with the action of the armature due to the fact that the silencing sheet weights the armature can be solved.

Description

technical field [0001] The invention relates to an electromagnetic relay, in particular to a low-noise electromagnetic relay. Background technique [0002] The existing electromagnetic relays are all connected by mechanical structures, and there is a rigid collision. For an electromagnetic relay with a horizontal magnetic circuit, during the pull-in action, when the armature is closed, it will collide with the yoke to generate noise, and the impact between contacts will generate noise. During the release process, the impact of the contacts, the armature and the limiter will also produce noise, and even the collision of the push card with other parts will also produce sound. [0003] In order to eliminate the impact noise between the armature and the yoke, a relay has appeared in the prior art, which is provided with a sound-absorbing sheet on the armature, and uses the sound-absorbing sheet to buffer between the armature and the yoke when the armature moves, thereby reducin...

AI Technical Summary

Problems solved by technology

However, this noise reduction method makes the armature of the movable part heavier, and the action of the armature is more sluggish. Moreover, the noise reduction sheet is attached to the armature. As the number of actions increases, the noise reduction sheet has the risk of falling and causing the relay to fail to work.

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