Electromagnetic relay with pushing card

Abstract

The invention discloses an electromagnetic relay with a pushing card. The electromagnetic relay comprises a shell, a magnetic circuit part, an armature assembly, the pushing card and a contact part. The armature assembly comprises an armature and a plastic part wrapping a part of the armature. The plastic part is provided with a plastic pushing arm which extends towards the pushing card; in the armature, a metal embedded part integrally extends towards the plastic pushing arm, and the plastic pushing arm completely wraps the metal embedded part. The push-and-pull strength of the plastic push arm of the armature assembly can be improved, the armature assembly can adapt to larger counter force transmitted by the movable contact spring through the push clamp when being applied to multiple groups of movable contact springs, and the electromagnetic relay is not prone to deformation when heated and absorbing water in a high-temperature and high-humidity environment, so that the stability of a product in an attraction state is guaranteed.

Description

technical field [0001] The invention relates to the technical field of relays, in particular to an electromagnetic relay with a push card. 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. The armature is an important part of the electromagnetic relay. Through the cooperation of the armature and the magnetic circuit part of the electromagnetic relay, the moving spring of the contact part of the electromagnetic relay can be driven to close or separate the dynamic and static contacts. An electromagnetic relay in the prior art is formed by injecting plastic and armature together to for...

AI Technical Summary

Problems solved by technology

[0004] The technical solution adopted by the present invention to solve the technical problem is: an electromagnetic relay with a push card, including a housing, a magnetic circuit part, an armature assembly, a push card and a contact part; the magnetic circuit part, an armature assembly and a contact part respectively installed in the preset position of the housing, and enable the magnetic circuit part and the armature assembly to match correspondingly; the push card fits between the armature assembly and the contact part; the armature The assembly includes an armature and a plastic part covering a part of the armature; the plastic part is provided with a plastic push arm extending toward the direction of the push card, and the push card is provided with a first slot, and the plastic push arm of the armature assembly fit in the first card slot of the push card; in the armature, a metal insert is integrally extended to the plastic push arm, and the plastic push arm completely covers the metal insert, The metal insert is used to increase the push-pull strength of the plastic push arm of the armature assembly, so as to solve the problem that the plastic push arm is easily deformed by heat and water absorption under high temperature and high humidity environment

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