Magnetic latching relay for resisting electromagnetic repulsion

Abstract

The invention discloses a magnetic latching relay for resisting electromagnetic repulsion. The magnetic latching relay comprises a relay base, wherein a stator plate assembly and a movable leaf spring assembly are arranged in the relay base; the movable leaf spring assembly is in contact connection with the stator plate assembly and comprises a conducting plate, a push card and a leaf spring; one end of the leaf spring is fixedly connected with the conducting plate; the other end of the leaf spring is connected with the push card; one end, connected with the conducting plate, of the leaf spring is in a bending structure; a positioning clamping groove is formed in the push card; and the push card is connected with the leaf spring through the positioning clamping groove. Through a bending structure design of the leaf spring, by resilience force of the leaf spring, the influences on a relay product caused by electromagnetic repulsion, contact system pressure, relay stress, mechanical impact and the like are reduced to the minimum; and meanwhile, the electromagnetic repulsion is counteracted by the resilience force of the leaf spring, so that the electrical life of the relay is greatly prolonged; and the resistance to temperature rise is greatly improved.

Description

Technical field [0001] The present invention relates to the field of relay technology, in particular to a magnetic latching relay that resists electromagnetic repulsion. Background technique [0002] Magnetic latching relay is a new type of relay developed in recent years, and it is also an automatic switch. Like other electromagnetic relays, it automatically turns on and off the circuit. The difference is that the normally closed or normally open state of the magnetic latching relay is completely dependent on the effect of permanent magnets, and the switching of the switch state is triggered by a certain width of pulse electric signal. [0003] In the existing magnetic latching relays, a straight sheet type conductive sheet relay or a loop type conductive sheet relay is generally used. When the relay is energized, the contacts will generate a large short-circuit current at the moment of contact. The electromagnetic repulsion force formed by the short-circuit current is always in...

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, whether it is a straight-type conductive piece relay or a loop-type conductive piece relay, due to the influence of contact pressure and electromagnetic repulsion, the anti-repulsion design of the shrapnel has certain limitations, especially in the product In the case of over-adjustment, it is easy to lead to insufficient pre-pressure, so when the relay switches through the load, it will produce a relatively obvious arc, which greatly reduces the electrical life of the relay contacts and the temperature rise resistance of the product.

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