Novel moving contact assembly and contactor

Abstract

The invention belongs to the technical field of electric appliances, and relates to a novel moving contact assembly and a contactor. The novel moving contact assembly comprises an electric connecting plate which is connected with an operating rod. The two sides of the upper surface of the operating rod are provided with upward extending sheets, the extending sheets are provided with side surface openings, an upper yoke iron, a lower yoke iron and a contact spring are further included, the two sides of the upper yoke iron are provided with side protrusions installed on the side surface openings, the side protrusions are installed in the side surface openings, an I-shaped column is inserted in the middle of the upper yoke iron in a penetrating mode, an electric connection plate middle hole is formed in the middle of the electric connection plate, and a contactor is provided with the moving contact assembly. The contactor has the advantages that the breaking capacity and the short-time over-current tolerance capacity are higher, electric arcs and fire are not easy to generate, the service life of the whole contactor is prolonged, and better line protection can be achieved.

Description

technical field [0001] The invention belongs to the technical field of electrical appliances, and also relates to electrical components, in particular to a DC contactor contact assembly system and a contactor. Background technique [0002] In the field of electrical appliances, contactors are commonly used electrical appliances, and their main function is to control the disconnection and opening of circuits; with the development of technology, stricter control is required in some circuits, such as in new energy vehicles, charging piles, photovoltaic systems, Energy storage systems and other fields. [0003] The contactor includes a housing, and there are two terminals outside the housing, which are respectively the lead-out end and the entry end. The moving contact assembly, the moving contact assembly includes an electric connection plate, the electric connection plate is connected with a joystick, the joystick operates, and the joystick drives the electric connection plat...

AI Technical Summary

Problems solved by technology

[0004] At present, the structure of the moving contact assembly is simple, for example, the cross-section is a "T"-shaped structure, and the ability to withstand short-term overcurrent is not strong, causing parts to be easily damaged, arcing, and fire, which affect the entire contactor. lifespan, could not be better for line protection appliances

[0005] For example, in the invention patent CN205863097U, a high-voltage vacuum DC contactor is disclosed, which includes a shell, a cylinder, a total assembly, an upper cover, and a small cap; the total assembly described includes an electrical contact system, a magnetic blowout system and electromagnetic system; the inner push rod sleeve is put into the outer push rod sleeve and lubricated with PTFE film. In order to prevent the PTFE film from slipping into the product cavity and causing damage, the inner push rod sleeve is designed as a "T" structure; After the invention patent is assembled with the shell, it is cured by pouring epoxy resin at high temperature, and then pumped and filled with inert gas to form a new type of sealed DC contactor, in which the coil directly passes the lead wire through the contact bracket, and then passes through the shell through the hole and the circuit board. Connected, so that the internal wires are completely hidden, and only the wires connected to the power supply are exposed to achieve anti-breakage, anti-breakage, and beautiful effects. However, its product performance can only meet the protection needs of small-capacity battery packs. For large-capacity battery packs suffer from poor performance

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