A compression spring of a snap-in electromagnetic relay

Abstract

The invention discloses a beating type electromagnetic relay pressure spring. The pressure spring comprises a flat-sheet-shaped main sheet body, wherein the upper part of the main sheet body extends towards the two sides in the flat sheet manner to form upper side wings; the tail ends of the upper side wings extend downwardly in the flat sheet manner to form tail wings; the lower part of the main sheet body extends towards the two sides in the flat sheet manner to form lower side wings; a tongue-shaped sheet is arranged in the middle of the main sheet body, wherein a certain inclined angle is formed between the plane of the main sheet body and the tongue-shaped sheet; the tail wings of the main sheet body are provided with bent parts; and when the upper side wings of the pressure spring are mounted in corresponding plastic inserting grooves of the relay, the circular-arc plane formed by the bent parts is in contact with the corresponding plastic inserting grooves of the relay. By adoption of the structure, the consistency in assembling the pressure spring is improved, so that the consistency of the pressing force of the pressure spring is further improved; and meanwhile, the convenience in assembling the pressure spring is improved, so that pollution to the internal environment of the relay is reduced.

Description

technical field [0001] The invention relates to the technical field of relays, in particular to a compression spring of a snap-in electromagnetic relay. Background technique [0002] A clapping type electromagnetic relay of the prior art such as Figure 1 to Figure 2 As shown, the armature 201 is press-fitted on the knife edge of the yoke 202 by means of the compression spring 100. The compression spring of this clapping type electromagnetic relay is as follows: image 3 , Figure 4 As shown, the compression spring includes a main plate body 101 in the shape of a flat plate. The upper part of the main plate body 101 extends an upper wing 102 in a flat plate manner to both sides, and the end of the upper wing extends downwards with a flat plate form. The lower part of the sheet body extends the lower side wings 104 in the form of a flat sheet to both sides. The middle of the main sheet body 101 is provided with a tongue 105 that forms a certain angle with the plane of the ma...

AI Technical Summary

Problems solved by technology

[0003] This compression spring has the following disadvantages in the insertion process: one is that the clamping feet of the compression spring (i.e. the lower side wings 104 of the main sheet body) are sheet-shaped, and the thickness is relatively thin, which is easy to scrape with the plastic slot, so it is not easy to insert , the assembly efficiency is low, and the automatic assembly is difficult. The position accuracy is low and the consistency is poor; in order to improve the above defects, the front end of the pairing position of the compression spring and the plastic slot can be reshaped to remove the punching sharp edge, but the punching sharp edge of the compression spring of the existing product is less than 0.5mm. It is more difficult to shape a larger fillet on the edge, especially it is very difficult to shape a fillet with a radius equivalent to the thickness of the material

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