Adjustable electromagnetic power supply switch

Abstract

The invention relates to the technical field of automobile power supply switches, disclosing an adjustable electromagnetic power supply switch. The adjustable electromagnetic power supply switch comprises an upper casing (1), a lower casing (18), an iron core (13), a movable contact spring assembly (12), a static contact spring assembly (22), a coil rack assembly (14), an enamelled wire (15) and the like, wherein magnetic conduction inner casings (17) are additionally arranged on the outer sides of the iron core (13), the coil rack assembly (14) and the enamelled wire (15); the inside diameters of the magnetic conduction inner casings (17) are the same as the excircle diameter of the coil rack assembly (14); the upper casing (1) and the lower casing (18) are made of plastic; main contacts are respectively made of composite silver material; and adjusting screws (6) are additionally arranged at the top of the iron core. According to the adjustable electromagnetic power supply switch disclosed by the invention, the problem of overlow or overhigh pull-in voltage is solved; and the phenomenon that the switch is burnt down due to short circuit caused by contact of a spanner and the upper casing when the switch is replaced, can be also avoided. The adjustable electromagnetic power supply switch disclosed by the invention has the advantages of adjustable stroke, controllable clearance, cost saving, convenience for operation, safety and reliability.

Description

technical field [0001] The invention relates to an electromagnetic power switch device, in particular to an adjustable electromagnetic power switch suitable for automobile power supply. Background technique [0002] A general electromagnetic power switch includes a stationary part and a movable part, wherein the stationary part mainly includes a coil, a magnetic plate and a coil frame, and the movable part mainly includes an armature and a contact linked with the armature, and the armature is arranged in the coil frame of the static part , a coil is arranged on the periphery of the coil frame, and one end of the coil frame is connected with a magnetically conductive plate. When the coil is powered or powered off, the magnetic field generated by the coil acts on the armature in the middle of the coil frame, causing the armature to make a linear telescopic movement, thereby driving the opening and closing of the contacts connected to the armature to complete the switching func...

AI Technical Summary

Problems solved by technology

The existing power switch is prone to electromagnetic interference. For example, the application number is: 200920086069, and the Chinese utility model patent named "Electromagnetic Power Supply Master Switch" adopts a plastic insulating sleeve in the iron shell and additional parts inside, so that the shell Inevitably increases, the volume of the switch increases, and it is not easy to assemble

For example, the application number is: 200820163941.7, a utility model patent named "Electromagnetic Vehicle Power Switch". During the assembly process, the stroke is difficult to control, and the pull-in voltage and disconnection voltage are directly affected by the stroke.

The power switch in the prior art is assembled with a sealing ring, so that there is an error in the structural gap, which affects the magnitude of the electromagnetic force, and often has problems such as too low or too high a pull-in voltage after assembly

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