A Magnetic Latching Relay with Flexible Static Contacts

Abstract

The invention discloses a magnetic latching relay with a flexible static contact part. The magnetic latching relay comprises a casing, a magnetic circuit part, a movable contact part and the static contact part, wherein the magnetic circuit part, the movable contact part and the static contact part are correspondingly installed in the casing. The static contact part comprises a static spring base, a static contact and a static contact piece. The static contact is installed on the static contact piece, the static spring base is provided with a mounting through hole and a fixing part, one end of the static contact piece is fixed on the static spring base through the fixing part, the other end of the static contact piece adheres to the mounting through hole in a suspended mode, and an n-shaped gap is reserved between the outer edge of the static contact piece and the inner side edge of the mounting through hole. The magnetic latching relay has the advantages that due to the fact that the static contact piece adheres in the suspended mode, the static contact piece can effectively alleviate impact force, times of shaking during the momentary contact of two contacts is greatly reduced, reliable contact time of the contacts is shortened, momentary arc discharge of the contacts caused by the shaking is reduced, and the use performance of the relay is greatly improved.

Description

technical field [0001] The present invention relates to a relay, more particularly, to a magnetic latching relay with a flexible static contact portion. Background technique [0002] The magnetic latching relay is a new type of relay developed in recent years. It is a kind of closed or open state that depends entirely on the action of permanent magnets. The mutual conversion between closed and open states only depends on a certain width of forward or reverse. The DC pulse voltage excites the coil instantly, and usually when the contact is in the open or closed state, the relay coil does not need to continue to be energized, and the contact state of the relay can be maintained unchanged only by the magnetic force of the permanent magnet. [0003] With the continuous development of the national smart grid, products such as smart capacitors and smart composite switches are more and more widely used in the smart grid, and the requirements for their built-in magnetic latching rel...

AI Technical Summary

Problems solved by technology

In the process of opening and closing the large current load of the existing magnetic latching relay moving and static contacts, the impact force attached to the moving contact at the moment of contact is relatively large. The circuit system cannot reliably complete the switching action during zero-crossing switching, and it will cause frequent arcing between contacts, contact bonding, and serious heating, which greatly reduces the performance of the relay. Therefore, this type of relay can no longer meet the requirements of intelligent Requirements for capacitors, composite switches, etc.

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