Energy-saving high-current electromagnetic relay

Abstract

The invention relates to an energy-saving high-current electromagnetic relay, which is provided with two copper cylinder bolts fixed on a step-shaped shell made from engineering plastics through parallel injection molding, wherein each bolt head is provided with a protective cap respectively, an isolation wall is arranged between the protective caps, a magnetic yoke which comprises a coil enwrapped inside and a sunken cylindrical bottom surface is arranged below a step in the shell, a concave cylinder of a lower magnetic yoke is filled with a moving iron of which the upper surface is a concave cylinder, a pushing frame is arranged above the lower magnetic yoke, an adjusting push rod below the pushing frame passes through the center of the lower magnetic yoke and the center of a return spring arranged in the concave cylinder of the moving iron and is in spiral connection with the moving iron, a blocking frame is arranged above the pushing frame, a red copper open-close plate is supported in a center hole on the blocking frame by a pressure overshoot spring, two sides on the open-close plate are provided with a movable silver contact respectively, the bottoms of the copper cylinder bolts are provided with fixed silver contacts, a temperature sensor is arranged in an open-close chamber between the movable contacts and the fixed contacts, a pair of strong magnets are arranged on the inner walls of the shell on two sides of the open-close chamber by an upper magnetic yoke, and a circuit control board is arranged on the inner wall of the shell. The energy-saving high-current electromagnetic relay is particularly applicable to automotive vehicles.

Description

technical field [0001] The invention relates to automatic control of voltage, current or power, in particular to an energy-saving high-current electromagnetic relay suitable for motor vehicles. Background technique [0002] The electromagnetic power relay used on the existing motor vehicle has a metal casing on the outside and a pure electromagnetic split-on structure inside. The disadvantages of this structure are large volume, heavy weight, low electromagnetic efficiency and large power consumption, and no thermal protection function and arc reduction measures for large currents below 400A, resulting in high failure rate and short service life. Contents of the invention [0003] The object of the present invention is to provide an energy-saving high-current electromagnetic relay with small volume, light weight, thermal protection and arc-reducing function for high current of contacts, and is beneficial to improve service life. [0004] The task of the present invention ...

AI Technical Summary

Problems solved by technology

The disadvantages of this structure are large size, heavy weight, low electromagnetic efficiency and large power consumption, and there is no thermal protection function and arc reduction measures for large currents below 400A, resulting in high failure rate and short service life.

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