A permanent magnet intelligent contactor with electromagnetically controllable counterforce that can guarantee normal opening
A technology of permanent magnets and contactors, applied in the direction of electromagnetic relays, electromagnetic relay details, relays, etc., can solve the problem of inseparable contactors and achieve the effect of reducing arcs
Inactive Publication Date: 2017-03-08
FUZHOU UNIV
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Problems solved by technology
The permanent magnet can provide a stable magnetic field, which is an advantage, but it is also a disadvantage under normal conditions, which will make the contactor inseparable without electricity. Therefore, in order to solve this problem, the present invention designs a nonlinear spring to offset the permanent magnet. The magnetic force of the magnet enables the contactor to separate normally under normal conditions
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[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0026] This embodiment provides that the present invention is realized by the following scheme: a permanent magnet intelligent contactor with electromagnetic controllable reaction force that can ensure normal opening, such as figure 1 with figure 2 As shown, it includes a mechanical system and an electric control system. The mechanical system includes a moving iron core, a static iron core, a coil, a moving iron core connector, a lower insulating shell, an upper insulating shell, a contact spring, a moving contact part, a static contact The head part and two nonlinear reaction force springs; the moving iron core connecting piece is a transverse cuboid structure, and the upper surface of the middle part of the moving iron core connecting piece is provided with a vertically upward contact spring, and the upper end of the contact spring is connected to a ...
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The invention relates to a permanent magnet intelligent contactor having electromagnetic controllable counterforce and capable of guaranteeing normal switching-off. The permanent magnet intelligent contactor comprises a mechanical system and an electric control system. The mechanical system comprises a movable iron core, a stationary iron core, a coil, a movable iron core connecting part, a lower insulating shell, an upper insulating shell, a contact spring, a movable contact component, a stationary contact component and two non-linear counterforce springs. The electric control system is connected with the coil. The electric control system comprises a CPU control module and a switching-on and switching-off control module, and switching-on and switching-off control over the permanent magnet intelligent contactor is achieved. The movable iron core is an iron core formed by iron core combinations made of permanent magnets and semihard magnetic alloy or residual-magnetism-free iron cores. The permanent magnets are inlaid in the lower portions of movable iron core posts. Three faces of each permanent magnet are wrapped by the iron core posts made of the corresponding semihard magnetic alloy or residual-magnetism-free iron cores. The majority of loss power in the iron cores and the coil can be saved, meanwhile, noise is reduced or eliminated, the temperature rise of the coil is lowered, and the service life of the permanent magnet intelligent contactor is prolonged.
Description
technical field [0001] The invention relates to the field of intelligent control of high and low voltage switching appliances, in particular to a permanent magnet intelligent contactor with electromagnetic controllable reaction force and capable of ensuring normal opening. Background technique [0002] Liu Yushu and others published the article "Application of Semi-hard Magnetic Materials in Magnetic Latching Contactors" in "Metallic Materials Research", Volume 15, Issue 6, December 1989, which introduced that magnetic holding contactors use semi-hard magnetic materials with high The remanent magnetism and coercive force can be controlled within a certain range. After the current is applied, the core has remanence, and the contactor does not need to be energized when it is working. Moreover, since the holding state of the contactor during working time is based on the residual magnetism of the semi-hard magnetic material, it will not be affected by voltage fluctuations. Geng...
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IPC IPC(8): H01H50/16H01H47/02
CPCH01H47/02H01H50/16
Inventor 陈德为陈文桂
Owner FUZHOU UNIV