Magnetic latching relay with asymmetric magnetic circuit

Abstract

Disclosed in the invention is a magnetic latching relay with an asymmetric magnetic circuit. The magnetic latching relay comprises a sealed housing, an electromagnetic system and a contact system, wherein the electromagnetic system and the contact system are arranged in the sealed housing. The electromagnetic system is arranged above the contact system and has an asymmetric structure; and s corresponding contact of the contact system is in a normally-open state in a return state and a corresponding contact of the contact system is in a normally-closed state in a self-holding state. The contact system consists of a pedestal, an auxiliary contact leading-out rod, a main contact leading-out rod, a connecting spring plate, a movable contact and a static contact; the two ends of the connecting spring plate are respectively connected with an armature and the auxiliary contact leading-out rod; the static contact and the main contact leading-out rod are connected; and the moving contact and the armature are connected. When the armature moves, the moving contact group is driven to move, thereby realizing state conversion. The magnetic latching relay has characteristics of simple magnetic circuit structure, miniaturization design, and high severe environment performance index.

Description

technical field [0001] The invention relates to the field of electromagnetic relay devices, in particular to a magnetic latching relay with an asymmetrical magnetic circuit. Background technique [0002] Magnetic latching relay ML (also known as remanence relay) is a kind of electromagnetic relay and an automatic switch. It generally consists of an electromagnetic system (mainly including coils, permanent magnets, armature components, yoke components, and armature brackets) And contact system (mainly composed of relay base group, static reed, contact, moving contact spring). Like other electromagnetic relays, it plays the role of automatically turning on and off the circuit. Its normally closed or normally open state (or reset state and excitation state) completely depends on the role of permanent magnets, and its switch state is converted by a pulse of a certain width. completed by the signal trigger. When the contact is in the holding state, the coil does not need the re...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the traditional coil magnetic circuit structure with the same two resistance values ​​and the same ampere-turn value is adopted. The size of the yoke or the size of the yoke, as well as the addition of a non-magnetic material between the armature and the yoke, lead to the sacrifice of magnetic efficiency, making the relay magnetic circuit structure complex, not conducive to miniaturization design, and the relay’s anti-harsh environment performance index is low. Magnetic Latching Relay with Symmetrical Magnetic Circuit

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