Magnetic maintaining electric solenoid with signal feed back

Abstract

The invention provides a solenoid with a sealing outer shell and a motion detector circuit which can feedback the operating state of an iron core; the invention can be applied to all automatization control equipments, and is particularly superior while being used in the severe operational environment. The keep solenoid with signal feedback comprises a magnetic insulation wire axes, wherein the middle part of the magnetic insulation wire axes is provided with a through hole extended along the axial direction; the periphery of the magnetic insulation wire axis is wound with coils; the solenoid also comprises a movable iron core which can be movably and freely received in the through hole of the magnetic insulation wire axis, a magnet fixing part which is used to adsorb the movable iron core, a return spring which can push the movable iron core along the direction away from the magnet fixing part, a shell which covers two end faces of the magnetic insulation wire axes and side faces of the coils and a testing circuit which is arranged inside the shell and close to the movable end face of the movable iron core; the testing circuit comprises a signal detecting device which can detect and feedback the position of the movable end face of the movable iron core.

Description

technical field [0001] The invention relates to a solenoid, in particular to a magnetic holding solenoid with an action feedback signal. Background technique [0002] A "solenoid" is also called an electromagnet. A conductive metal wire is wound on a hollow non-metallic coil frame, and then an iron core is inserted into the hollow through hole of the coil frame, thus forming an electromagnet. Connect the conductive metal wire with an appropriate voltage. Under the action of the current, the space around the current-carrying conductor forms a magnetic field like a magnet, and forms two poles equivalent to a bar-shaped magnet at both ends of the current-carrying solenoid. The formed magnetic force can Drive the movement of the metal iron core. [0003] As a kind of electric drive actuator, solenoid is widely used in various industrial and civil products, and it is an important device to realize automatic control. At present, various solenoids are used in products such as so...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problem of poor self-protection performance of the solenoid and no action detection feedback signal, and provide a solenoid with a sealed casing and an action detection circuit that can feed back the action state of the iron core, which can be used in various Among all kinds of automatic control equipment, especially for the harsh working environment, it has more advantages

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