Clapping direct-acting normally-open relay

Abstract

The invention aims at providing a clapping direct-acting normally-open relay with low energy consumption, small size and low cost. The clapping direct-acting normally-open relay comprises a shell, wherein a magnetic circuit part, a movable contact part and a static contact part are arranged in the shell; the magnetic circuit part comprises a coil frame and a coil arranged on the coil frame; a through hole which penetrates through the left side and the right side is arranged in the coil frame; an iron core is arranged in the through hole; one end of an L-shaped yoke iron and the iron core are fixed, and the other end of the L-shaped yoke is located on the upper side of the coil frame and is matched with an armature; the two ends of the armature are respectively a touch end and an attractingend; the attracting end of the armature is arranged on the left side or the right side of the iron core; the touch end of the armature is arranged on the upper side of the yoke iron and is located onthe lower side of the lower end of a push rod; and the coil is electrified to enable the attracting end of the armature to move towards the end, away from the yoke, of the iron core, and to enable the touch end of the armature to drive the push rod to move upwards.

Description

technical field [0001] The invention relates to a relay, in particular to a snap-in direct acting normally open relay. Background technique [0002] Existing direct-acting relays, such as the patent application number 201610276487.5, discloses a high-voltage DC relay magnetic circuit system, including a U-shaped yoke, a lower magnetic-conducting cylinder fixed in the U-shaped yoke, and a lower magnetic-conducting cylinder sheathed in the U-shaped yoke. The outer coil frame and the moving iron core whose lower end is located in the lower magnetic tube, the yoke iron plate is arranged above the moving iron core, and a stroke gap is formed between the lower end surface of the yoke iron plate and the upper end surface of the moving iron core. There is a ring-shaped upper magnetic cylinder, the moving iron core can reciprocate up and down in the upper magnetic cylinder, the upper magnetic cylinder is fixed to the yoke iron plate, the moving iron core is fixed to the lower end of ...

AI Technical Summary

Problems solved by technology

[0003] Due to the existence of the moving iron core and the lower magnetic tube, the coil frame must be made very large. At the same time, in order to ensure the up and down movement of the moving iron core, the number of coil turns wound on the coil frame is large, which makes the relay larger in size and consumes more energy. High, and there are many relay parts, the cost is high

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