A monostable permanent magnet actuator

A permanent magnet operation and monostable technology, applied in the direction of the protection switch operation/release mechanism, can solve the problems of slow opening speed, low reliability, complex structure, etc., and achieve stable and reliable opening and closing, and anti-fatigue effect Excellent, small size effect

Pending Publication Date: 2018-12-25
NINGBO YAOHUA ELECTRIC TECH
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Problems solved by technology

[0003] In order to overcome the shortcomings of the existing monostable permanent magnet operating mechanism, such as complex structure, low reliability, slow opening speed and high energy consumption, the present invention provides a simple structure, high reliability, fast opening speed Fast, low energy consumption, maintenance-free monostable permanent magnet operating mechanism

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  • A monostable permanent magnet actuator
  • A monostable permanent magnet actuator

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] refer to figure 1 and figure 2 , a monostable permanent magnet operating mechanism, including a moving iron core assembly, an opening coil, a permanent magnet and a static iron core assembly, the moving iron core assembly includes a moving iron core and a driving rod, and the driving rod is fixed on On the moving iron core; the static iron core assembly includes an inner static iron core, an outer static iron core and a mechanism fixing plate, and the inner static iron core and the outer static iron core are fixed on the mechanism fixing plate, and the inner static iron core The core is located inside the outer static iron core, the permanent magnet is placed between the inner static iron core and the outer static iron core, and the opening coil is located between the inner static iron core and the outer static iron core; the lower end of the drive rod wears ...

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Abstract

A monostable permanent magnet actuator comprises a movable iron core assembly, an opening coil, a permanent magnet and a static iron core assembly, wherein the movable iron core assembly comprises a movable iron core and a driving rod, and the driving rod is fixed on the movable iron core; the static iron core assembly comprises an inner static iron core, an outer static iron core and a mechanismfixing plate, wherein the inner static iron core and the outer static iron core are fixed on the mechanism fixing plate, and the inner static iron core is positioned inside the outer static iron core,the permanent magnet is positioned between the inner static iron core and the outer static iron core, and the opening coil is positioned between the inner static iron core and the outer static iron core; the lower end of the driving rod passes through the inner static iron core, the opening spring is put on the driving rod, the upper end of the opening spring is vertically pressed against the movable iron core, the lower end of the opening spring is vertically pressed against the inner static iron core, the opening spring comprises an inner spring and an outer spring, the inner spring is arranged in the outer spring, and the inner spring is opposite to the outer spring in rotation direction. The mechanism has the advantages of simple structure, high reliability, fast opening speed, low energy consumption and zero maintenance.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to a monostable permanent magnet operating mechanism of the circuit breaker. Background technique [0002] At present, in the field of power system power distribution, the operating mechanism of the circuit breaker usually has three types: electromagnetic type, spring type and permanent magnet type. In comparison, the permanent magnet operating mechanism has the advantages of simple structure, few parts, long life and frequent operation. The permanent magnet operating mechanism is divided into two types: bistable and monostable. Among them, the monostable permanent magnet operating mechanism is increasingly attracting people's attention due to its high reliability, fast opening speed, low energy consumption, and maintenance-free. focus on. The opening process of the monostable permanent magnet operating mechanism is to pass a reverse current into the coil to offset the holding force of the per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/32H01H71/68
CPCH01H71/32H01H71/68
Inventor 吕恩林朱庆荷戴守祥吴德祥王竞如刘坚钢刘晓颖蒋超奇诸益栋熊白云孙跃
Owner NINGBO YAOHUA ELECTRIC TECH
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