Two Tongue and carried back moving spring electro magnetic relay

Abstract

The relay is composed of contact system, magnetic system and base. The magnetic system includes yoke, short circuit ring, armature, return spring leaf and winding. The return spring possessing two arms in diglossia structure can be pressed into corresponding two grooves on the yoke. Stable electric parameters of the relay are insured since the compressing diglossia structure and limited apex of the tongue of return spring leaf. The relay has no spring part, making volume of magnetic system become smaller so as to guarantee miniaturized relay. Unidirectional open slot on the base containing part of magnetic circuit provides good performances: raised insulation property, electrical distance, creepage distance and penetrating through insulation distance. Through experiment, both of creepage distance and spacing interval is larger than 10 mm. Isolation between input end and output end is raised so as to increase withstand voltage of medium. The withstand voltage reaches 5000 Va.c.

Description

(1) Technical field [0001] The invention relates to an electromagnetic relay, in particular to a small-sized high-power alternating current electromagnetic relay with double-tongue-end recovery reed mainly of low height. (2) Background technology [0002] As an electromechanical component, electromagnetic relay is widely used in various electromechanical equipment. Existing conventional small high-power AC electromagnetic relays generally include coils, coil leads, iron cores, yokes, armatures, springs, push blocks, moving reeds, static reeds, contacts, bases, and shells. Among them, the coil is generally installed in a positive way, the iron core and the yoke are connected by riveting, the armature is stuck on the yoke, and is restored by a spring. The height direction of the product is large, and the isolation between the coil and the contact is also low, and the medium withstands pressure. Not high, in general, the conversion contact type products can reach up to 3000Va....

AI Technical Summary

Problems solved by technology

As a result, this type of product cannot meet the requirements of the occasion where the installation space is small and the input and output isolation are high.

[0003] In the existing AC electromagnetic relay, the reset of the armature is generally through spring tension, with the yoke as the fulcrum, forming a seesaw structure, the volume of the magnetic circuit is large, resulting in a large product size, which cannot meet the requirements of small installation height and space.

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