A Small Magnetic Latching Power Relay

Abstract

The invention discloses a small-size magnetic latching power relay, which comprises a magnetic path part, a contact part, a pushing card and a base. The magnetic path part and the contact part are respectively installed at the two ends along the length direction of the base. The pushing card is connected between the magnetic path part and the contact part. The magnetic path part comprises a coil rack, an iron core, an upper yoke, an L-shaped yoke and an n-shaped or H-shaped armature assembly with a permanent magnet in the middle. The iron core is inserted in the coil rack and the axis of the iron core is enabled to be perpendicular to the base. The upper yoke and the horizontal side of the L-shaped yoke are respectively connected with the upper end and the lower end of the iron core. The armature assembly is installed in the pushing card. A first armature of the armature assembly is enabled to be between the upper yoke and the vertical side of the L-shaped yoke. When the relay acts, the first armature gets close to the upper yoke; and when the relay is restored, the first armature gets close to the vertical side of the L-shaped yoke. The small-size magnetic latching power relay not only can effectively increase the creepage distance between the input end and the output end of the relay, but also has the characteristics of simple structure, good assembling ability and good manufacturability.

Description

technical field [0001] The invention relates to a relay, in particular to a small magnetic holding power relay. Background technique [0002] With the continuous improvement of environmental protection requirements, magnetic latching relays, as an energy-saving component, have been more and more widely used. Different from pure electromagnetic relays, magnetic latching relays use permanent magnets to maintain the action of the relay through the magnetic force of the permanent magnets, thereby reducing energy consumption. In some existing magnetic latching relays, although the permanent magnet can generate the suction force to keep the armature at the action position at the action position, the permanent magnet attraction at the return position usually still has the tendency to move the armature to the action position. Rely on the reed counter force to keep the armature in the reset position. This makes the performance of the relay against vibration generally poor, and the ...

AI Technical Summary

Problems solved by technology

This makes the performance of the relay against vibration generally poor, and it is easy to make the armature return to the action position from the reset position after a certain impact, which affects the performance of the relay.

On the other hand, in the existing small magnetic latching power relay, the distance between the magnetic circuit part and the contact part is small, so that the creepage distance between the input terminal and the output terminal of the relay is relatively short, resulting in insufficient safety of the relay

In addition, in the existing magnetic latching relay, the iron core and one of the yokes are usually made as a whole. The iron core is cylindrical and the yoke is rectangular, which makes the shape of the whole part more complicated and difficult to process.

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