A kind of relay with bilateral holding function

Abstract

The invention discloses a relay with a bilateral holding function. The relay comprises a coil, a yoke, an armature, an iron core, a dynamic spring member, magnet steel, a magnetic conductive member and a stationary spring member. The armature is L-shaped. The head of the armature correspondingly matches the head of the iron core. The tail of the armature correspondingly matches the yoke. When the coil applies set voltage, the head of the armature can suck the head of the iron core and drive a movable contact and the normally open end of the stationary spring member to be closed. When the coil applies reset voltage, the tail of the armature can suck the yoke and drive the movable contact to move away from the normally open end of the stationary spring member. One end of the magnetic conductive member is connected with the yoke. The other end of the magnetic conductive member is connected with the yoke through the magnet steel, so that the relay has a double-holding magnetic circuit. According to the invention, through structure improvement, the normally open end contact and the normally closed end contact of the relay are switched on through suction provided by an electromagnetic system; the normally closed end performance is remarkably improved; the breaking force of normally open and normally closed contacts is improved; and the contacts are not easy to bond.

Description

technical field [0001] The invention relates to the technical field of relays, in particular to a relay with a bilateral holding function. Background technique [0002] Relay is an automatic switching element with isolation function. It is widely used in home appliances, remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment. It is one of the most important control elements. It plays a role in the control circuit. Functions such as automatic adjustment, safety protection, conversion circuit, etc. [0003] figure 1 It is a conventional relay structure in the prior art, and the relay includes a coil 100, a yoke 101, an armature 102, a compression spring 103, a push card 104, an iron core 105, a moving spring part 106 and a static spring part, wherein the static spring Components can include a normally closed static spring 107 and a normally open static spring 108 (such as figure 1 shown), it can also be only normally open st...

AI Technical Summary

Problems solved by technology

When the coil 100 voltage was removed, the moving contact of the moving spring part 106 and the normally open static contact of the normally open static spring 108 were realized by means of the recovery mechanical reaction force of the moving reed of the moving spring part 106 and the normally open static contact. Breaking, and finally under the action of the moving reed restoring mechanical reaction force, the moving contact moves to the normally closed static contact end of the normally closed static spring 107, and closes with the normally closed static contact; The breaking of the contact depends on the mechanical reaction force of the moving reed. The pressure when the moving contact and the normally closed static contact are closed is also provided by the mechanical reaction force of the moving reed, and the mechanical reaction force of the moving reed cannot be set It is very large (the mechanical reaction force of the moving reed is often much smaller than the magnetic circuit suction force, otherwise the magnetic circuit suction force cannot overcome the mechanical reaction force of the moving reed, and the normally open contact end of the relay cannot be closed), so the conventional relay has a normally closed state. The closing pressure of the contact at the normally open end is much smaller than that at the normally open end (causing the electrical life performance of the normally closed end contact to be much weaker than that of the normally open end contact), and the disadvantages of the insufficient breaking force of the normally open end contact

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