Lock-on relay with bi-stable state

Abstract

The invention discloses a bistable locking relay, which comprises a shell. The inside of the shell is provided with a main electromagnetic system consisting of a main iron core, a main yoke iron and a main armature iron which are wound by a main coil, and a secondary electromagnetic system consisting of a secondary iron core, a secondary yoke iron and a secondary armature iron which are wound by a secondary coil; one end of the main yoke iron is connected with the main iron core, while the other end is reversely bent, and a bending tail end is provided with the main armature iron; one end of the secondary yoke iron is connected with the secondary iron core, while the other end is reversely bent, and a bending tail end is provided with the secondary armature iron; the bending tail ends of the main armature iron and the secondary armature iron can be locked with each other through an interlock mechanism; the relay adopts a pulsed drive trough electromagnetic and mechanical locking structures; after a contact is closed or released, the coil can always keep the power-off condition; and the instantaneous driving by pulse has low power consumption and no power consumption exists in the working state, so the relay can save electric energy, is safe and steady, and is applicable to the automatic control of various home appliance loads.

Description

technical field [0001] The invention relates to a bistable electrical component, in particular to a bistable locking relay. Background technique [0002] As an electronic control device, the relay has a control system and a controlled system. It is usually used in automatic control circuits. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit. Such as figure 1 As shown, the existing ordinary relay has an iron core wrapped with a coil, an armature pulled by a spring and supported by a fulcrum, and some contacts installed on the armature. When the coil is connected to a certain voltage of direct current , Generate an electromagnetic field, attract the armature, and close the contact with one end; after the power is disconnected, the spring pulls up the armature, and closes the contact with the other end, realizing the functi...

AI Technical Summary

Problems solved by technology

[0003] Although this kind of relay circuit is simple, it has the following disadvantages: a certain intensity of current is required to absorb the armature, and the suction force of the electromagnetic field generated by this current must be enough to overcome the pulling force of the spring on the armature, and to maintain this state, it must be kept energized , which consumes a lot of power, but the consumed power has no effect on the entire electrical appliance; the contacts are combined when the coil is energized, and the contacts are reset when the power is off. One-time driving cannot be self-locking. In order to achieve one-time driving self-locking, the Adding peripheral circuits such as self-locking circuits and bistable circuits to the relay circuit makes the original simple device more complicated and the cost increases

Images