Power relay plastic assembly

Abstract

The invention discloses a power relay plastic assembly, which comprises a base, a coil frame and a push rod, wherein a T-shaped insulation wall is arranged on the base, the base is segmented to a conductive system area and a magnetic circuit system area, a lead pin mounting hole and a positioning groove are symmetrically arranged at the front side and the rear side of the magnetic circuit system area, a positioning shaft of an H-shaped coil frame is inserted in the positioning groove of the base, the lower part of a right bottom plate of the coil frame is provided with a pair of rectangular lead pin seats and each of two vertex angles of the upper part of the right bottom plate is provided with a convex wire clamping bolt, a dynamic spring mounting hole and a static spring mounting hole are symmetrically arranged in the conductive system area of the base, acting plates with dynamic spring ports are symmetrically arranged in the front part and the rear part of the acting end of the pushrod, and a limiting block is vertically arranged on the back surface of the acting plate. According to the power relay plastic assembly, the structure is compact and novel, the size is small, and through rational layout among the base, the coil frame and the push rod, the creepage distance and the insulation of the relay are improved, excessive pull-in voltage to cause relay failure can be effectively avoided, the assembly and the positioning are convenient, and the precision is high.

Description

technical field [0001] The invention relates to a small electromagnetic relay, in particular to a plastic component of a power relay, and belongs to the technical field of electrical equipment. Background technique [0002] Electromagnetic relay is a kind of relay that uses electromagnetic force to drive the relative movement of mechanical parts to produce a predetermined response. It is generally composed of iron core, coil, armature, yoke, shrapnel, push rod, and dynamic and static spring with contacts. When the current passes through the coil, electromagnetic force is generated, and the armature is attracted, so that the moving contact of the moving spring contacts the static contact of the static spring; when the current in the coil disappears, the electromagnetic force disappears, and the armature resets, so that the moving contact The moving contact of the spring is separated from the static contact of the static spring, and the purpose of conducting or cutting off the...

AI Technical Summary

Problems solved by technology

[0003] With the development of electrical miniaturization, traditional relays have large volume, relatively large base, push rod and coil frame, and the combination with functional parts is not compact enough, and the separation between the magnetic circuit system and the conductive system of the relay is not clear enough. The insulation of the coil is not high enough; the assembly and positioning of each component is complicated, and there are many production organization procedures, mainly manual assembly and semi-automatic assembly, which cannot meet the needs of fast and efficient industrial automation manufacturing; , the shrapnel rebounds and is easy to pull the push rod to move back quickly, causing the relay to fail, the service life is short, and sometimes there are faults such as broken enameled wire between the coil and the lead pin, which affects the normal use and life of the product

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