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Fan-shaped permanent magnet-comprising dual-steady-state contactor

A contactor and bistable technology, applied in the direction of electromagnetic relays, electromagnetic relay details, relays, etc., can solve the problems of low permanent magnet utilization, large space volume, slow response speed, etc., to improve the permanent magnet utilization, The effect of fast response speed and small ampere-turns

Inactive Publication Date: 2018-03-06
嘉润电气科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a fan-shaped permanent contactor that solves the problems of slow response speed, low permanent magnet utilization rate, large space volume, and low holding force of the existing bistable direct-acting contactor with permanent magnets. Magnetic bistable contactor

Method used

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  • Fan-shaped permanent magnet-comprising dual-steady-state contactor

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Embodiment Construction

[0035] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] refer to figure 1 — Figure 7 , the present invention provides a bistable contactor with sector-shaped permanent magnets, including a static iron core 1, a coil 2, a casing 3, a permanent magnet 4, a magnetic ring 5, a spacer 6, a lower yoke 7, an armature 8, a Gate spring 9, push rod 10, spacer 11 and base 12;

[0037] The static iron core 1 is a cylinder with a hole in the center, its upper end surface is a plane, and fits with the lower surface of the base 10, and its lower end surface is a conical surface, which fits with the upper end conical surface of the armature 7, The static iron core 1 is fixed together with the base 10 by screws;

[0038] The upper end surface of the coil 2 is provided with a protrusion, which is fixedly connected with the groove on the lower end surface of the base 12; the coil 2 is located between the static iro...

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Abstract

The invention provides a bistable contactor with sector permanent magnets. The existing contactor has the disadvantages of slow response speed, low permanent magnet utilization rate, large space volume, and low holding force. The invention has a symmetrical structure and simple assembly; bistable magnetic holding, the holding force can be adjusted by changing the number of permanent magnets; the permanent magnetic flux does not have a short-circuit path by the static iron core or the lower yoke iron, which improves the utilization rate of the permanent magnet , which is beneficial to reduce the height of the permanent magnet and reduce the overall size of the contactor; the permanent magnet holding force and the closing spring reaction force cooperate with each other to make the contactor pull-in ampere-turns small, the pull-in power consumption is small, the pull-in time is short, and the response The speed is fast; the lower end surface of the armature is stepped to form the main and auxiliary pole surfaces. On the one hand, the large area of ​​the main pole surface is conducive to reducing the ampere-turns of the pull-in and shortening the pull-in time. On the other hand, the contact area between the auxiliary pole surface and the lower yoke is small. It improves the pull-in retention force, ensures reliable pull-in of the contactor, avoids misoperation, and helps reduce contact bounce and improve the electrical life of the contactor.

Description

technical field [0001] The invention relates to the technical field of a bistable direct-acting permanent magnet contactor, in particular to a sector-shaped permanent magnet bistable contactor. Background technique [0002] Contactors are widely used in various fields such as photovoltaic power generation, new energy, power system, petroleum, chemical industry, coal mine, metallurgy and electrified railway. Vacuum contactors are used to frequently switch on and off the normal working current, and are usually used for long-distance connection and disconnection of 6kV, 380V (660V, 1140V) AC motors that frequently start and stop at medium and low voltages. The vacuum contactor is mainly composed of a vacuum interrupter and an operating mechanism. The vacuum interrupter has the function of reliably extinguishing the arc when passing the normal working current and frequently cutting off the working current, but it has the function of cutting off the overload current and short-ci...

Claims

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Application Information

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IPC IPC(8): H01H50/16H01H51/27
CPCH01H50/16H01H51/27
Inventor 余铁辉
Owner 嘉润电气科技有限公司
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