Clapper-type double-magnetic circuit magnetic latching relay

Abstract

The invention discloses a clapper-type double-magnetic circuit magnetic latching relay. The clapper-type double-magnetic circuit magnetic latching relay comprises a magnetic circuit part, wherein the magnetic circuit part comprises an iron core, an armature, a yoke, magnetic steel, a magnetism-conductive piece and a coil. The yoke comprises a pole surface part, a magnetism-conductive part and a connecting part; the iron core is installed in a coil hole; a pole surface is arranged at the upper end of the ion core, and the lower end of the iron core is connected with the connecting part of the yoke; the magnetism-conductive piece is opposite to the magnetism-conductive part of the yoke, and certain gaps are formed between the bottom of the magnetism-conductive piece and the connecting part of the yoke; the magnetic steel is arranged between the magnetism-conductive piece and the magnetism-conductive part of the yoke; the armature is arranged on the top of the magnetism-conductive piece, the two ends of the armature are opposite to the pole surface of the iron core and the pole surface of the yoke respectively to ensure that when the armature rotates, and the two ends of the armature can be switched alternatively between the part close to the pole surface of the iron core and the part close to the pole surface of the yoke. Due to the arrangement of a double-magnetic circuit structure, the setting state and the reset state of the magnetic circuits are almost symmetric under the condition that the magnetic circuits are not symmetric, and accordingly the balancing-type magnetic circuit structure of the magnetic latching relay is achieved.

Description

technical field [0001] The invention relates to a relay, in particular to a snap-in double magnetic circuit magnetic latching relay. Background technique [0002] Relay is an automatic switching element with isolation function, which is widely used in communication, automobile, automatic control, household appliances and other fields, and is one of the most important control elements. [0003] Since the relay came out in the 19th century, great changes have taken place in its performance and structure, and it is developing in the direction of miniaturization and energy saving. The magnetic latching relay uses a permanent magnet to provide electromagnetic attraction. When the coil is excited, the contact moves. After the coil is de-energized, the contact remains in this state. It is a green relay. [0004] To achieve magnetic retention in a typical snap-in electromagnetic relay, the iron core (or yoke) is generally divided into two parts, and a permanent magnet is connected ...

AI Technical Summary

Problems solved by technology

In the case of improper matching between the magnetic force and the restoring force, the setting voltage of the coil may be small,

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