Push rod structure of a large current normally closed magnetic latching relay

Abstract

The invention discloses a push rod structure of a high-current normally-closed type magnetic latching relay. The push rod structure comprises a base, a rotating module, a coil module, a locating pin, a push rod and a movable spring module. The rotating module is rotatably installed on the base, is controlled by the coil module to rotate and is provided with an arc-shaped guide surface, the push rod is installed on the rotating module through the locating pin, is in line contact with the arc-shaped guide surface and is in line contact with the locating pin, and the rotation of the arc-shaped guide surface is converted and decomposed into vertical motion of the push rod and horizontal motion on the locating pin. The lower end of the push rod is opposite to the movable spring module arranged on the base, and when the push rod moves downwards, the lower end of the push rod pushes the movable spring module to move downwards, and contacts are synchronously separated. The double contacts are synchronously separated through the push rod structure of the high-current normally-closed type magnetic latching relay, and product use stability is improved.

Description

technical field [0001] The invention relates to the technical field of relays, in particular to a push rod structure of a large current normally closed magnetic latching relay. Background technique [0002] Relay is an automatic switching element with isolation function, which is widely used in communication, automobile, automatic control and household appliances and other fields. Among them, the magnetic latching relay uses a permanent magnet to provide magnetic force. When the coil is excited, the contact moves. After the coil is de-energized, the contact remains in this state. [0003] For a double-contact high-current magnetic latching relay, the contact pressure on both sides is required to be as consistent as possible, and the contacts on both sides can be closed and opened at the same time, so that the product performance is more stable. [0004] In the prior art, the high-current magnetic latching relay drives the movement of the push-pull plate through the rotation...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the high-current magnetic latching relay drives the movement of the push-pull plate through the rotation of the rotating block, and then the push-pull plate pushes the moving spring to realize the opening and closing of the double contacts on both sides. For example, the publication number is: US6788176B2 discloses a high-current In the magnetic latching relay, however, there is a point contact between the rotating block and the push-pull plate in the prior art, and the push-pull plate is easy to shake and tilt in the guide rail, resulting in a large difference in contact pressure on both sides when closing, and at the same time, causing the contacts on both sides to The action is not synchronized when opening and closing, making the performance of the relay unstable

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