Polarity relay

Abstract

The invention discloses a polarity relay. The polarity relay comprises an insulation housing, an armature assembly and a coil assembly. The armature assembly is pivotably installed in the insulation housing so that the armature assembly can be allowed to rotate between a first position and a second position. When the armature assembly is in the first position or the second position, one end of an iron core is in contact with one armature in a pair of armatures, a gap is arranged between the other end of the iron core and the armatures and the other end of the iron core is not in contact with the armatures. According to the invention, the other end of the iron core is separated from the armatures through an air gap, and magnet separation sheets need not to be added between the armatures and the iron core or insulation layers need not to be coated on the armatures and the iron core, so the manufacturing cost is reduced. In addition, the armature assembly rotates around vertical pivoting shaft, so fulcrum transition of the armature assembly during the moving process is avoided; movement is more stable; and continuity of the product in the moving process is ensured.

Description

technical field [0001] The invention relates to a polarized relay, in particular to a monostable polarity relay. Background technique [0002] A polarity relay generally includes an insulating case and a coil assembly, an armature assembly and multiple sets of contact assemblies accommodated in the insulating case. [0003] A coil assembly includes a coil and an iron core. In the prior art, the coil is generally installed in the insulating base of the insulating housing from top to bottom, and the iron core is inserted into the coil. [0004] At present, polarity relays on the market generally use "I"-shaped magnetic circuit structures. One end of the iron core is a fulcrum, and the other end of the iron core rotates around the fulcrum. There are two defects in this magnetic circuit structure: (1) When used in monostable products, it is necessary to add a magnetic spacer between the contact surface of the armature and the iron core or coat an isolation layer on the contac...

AI Technical Summary

Problems solved by technology

There are two defects in this magnetic circuit structure: (1) When used in monostable products, it is necessary to add a magnetic spacer between the contact surface of the armature and the iron core or coat an isolation layer on the contact surface of the armature and the iron core , to prevent the resultant electromagnetic force from rising sharply, to ensure that the product can be released normally, which will lead to an increase in cost

[0005] (2) There is a fulcrum conversion during the movement of the armature, resulting in a discontinuous movement of the product

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