Electromagnetic relay with pressure spring

Abstract

The invention discloses an electromagnetic relay with a pressure spring. The electromagnetic relay comprises a coil rack, a yoke, an armature and the pressure spring; the pressure spring comprises a fixed part and an elastic piece part, the pressure spring is fixed on the coil rack through the fixed part, and the armature is limited at the knife edge of the yoke by the elastic piece part; the fixed part of the pressure spring is U-shaped, one part of the coil rack is matched in a U-shaped opening of the U-shaped pressure spring, and two opposite side edges of one part of the coil rack are respectively provided with a first convex part and a second convex part in an outward protruding manner; the pressure spring is provided with a first clamping part and a second clamping part which are correspondingly matched with the first convex part and the second convex part, the first clamping part and the first convex part are installed in a clearance fit mode, and the second clamping part and the second convex part are installed in an elastic interference fit mode. According to the invention, the generation of plastic chips in the assembly process of the pressure spring can be reduced, the phenomenon of deformation or improper assembly of the pressure spring can be prevented, and the plastic chips can be better prevented from entering the area of the contact end.

Description

technical field [0001] The invention relates to the technical field of relays, in particular to an electromagnetic relay with a compression spring. Background technique [0002] The relay is an electronic control device, which has a control system (also known as the input circuit) and a controlled system (also known as the output circuit), usually used in automatic control circuits, it actually uses a smaller current to control a larger An "automatic switch" of electric current. Therefore, it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit. An electromagnetic relay with a compression spring in the prior art uses the compression spring to limit the armature at the knife edge of the yoke, so that the armature can swing around the knife edge of the yoke and attracts to the pole surface of the iron core when the coil is energized. And when the coil is powered off, it resets and leaves the pole face of the iron core. This kind o...

AI Technical Summary

Problems solved by technology

[0003] First, during the assembly process of the compression spring, scraping is easy to occur, which affects the stability of the relay parameters, especially when the plastic chips reach the contact end, it will cause the relay to be non-conductive

[0004] The second is that during the assembly process of the compression spring, it is easy to cause assembly deformation or improper assembly. The deformation of the compression spring will cause the action point of the compression spring to shift, thereby affecting the product’s operating voltage and release voltage.

Images