Permanent magnet executor

A permanent magnet operation and permanent magnet technology, applied in the protection switch operation/release mechanism, the power device inside the switch, etc., can solve the problems of low overall reliability, complex structure, large energy storage noise, etc. The effect of maintenance, good matching performance and simple structure

Inactive Publication Date: 2005-06-15
西安通大思源电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual use of the former, due to factors such as complex structure, many moving parts, large energy storage noise, high production process requirements, and low overall reliability, the switch sometimes refuses to move due to parts breakage, corrosion, out-of-stock, and stagnation. occur
The latter, although simple in structure, still has a high failure rate of the release and locking device, and requires a large operating force.
Although the existing permanent magnet operating mechanism can solve the above problems well, there are often individual phenomena that the closing is not in place

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] see figure 1 , figure 1 It is the first structure schematic diagram of the present invention.

[0023] According to the technical solution of the present invention, the permanent magnet mechanism includes: a transmission rod 7, an armature 12 is arranged on the transmission rod, the armature 12 is a cylinder, and its upper and lower ends have taper angles respectively, and the taper angle refers to the cylinder side facing the axis. The angle of center inclination; the opening coil, permanent magnet 9, pole shoe 10, closing coil 2 and static iron core 3 are respectively arranged around the armature 12, and the upper and lower ends of the transmission rod 7 pass through the upper and lower shaft sleeves , 6, the upper and lower bushings are respectively inlaid on the upper end cover 1 and the lower end cover 5, and an auxiliary gasket 8 is installed on the lower end cover 5. same angle.

[0024] The static iron core 3, the upper end cover 1 and the lower end cover 5 c...

Embodiment 2

[0026] figure 2 It is the second structure schematic diagram of the present invention. The difference between this embodiment and Embodiment 1 is that this embodiment adopts a square structure. In the square structure, the upper and lower end covers 1, 5 and their attached basin shapes, the static iron core 3 and the pole shoe 10 are made into a whole, and are collectively called the static iron core. Simultaneously, the auxiliary gasket 8 and the armature 12 are also made into corresponding square shapes. All the other are with embodiment 1.

Embodiment 3

[0028] image 3 It is a schematic diagram of the third structure of the present invention. The difference between this embodiment and Embodiment 1 is that the opening coil is removed around the armature 12, and the rest are the same as in Embodiment 1. The current in the opposite direction of the gate current is used to complete the opening operation. However, this structure will produce a certain demagnetization effect on the permanent magnet, and the purpose of Embodiment 1 can also be achieved under certain less demanding conditions.

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Abstract

The invention discloses a permanent magnet operating mechanism used for driving mechanisms of circuit breakers, load switches and other equipment, which comprises a transmission rod, on which an armature is fixed, and opening coils are respectively arranged around the armature (sometimes it can be omitted). ), permanent magnets, pole shoes, closing coils and static iron cores. The upper and lower ends of the transmission rod pass through the upper and lower bushings. The upper and lower bushings are correspondingly inlaid on an upper end cover and a lower end cover. There is an auxiliary gasket on the lower end cover. The upper end cover is a pot-shaped structure, and the oblique angle inside the pot is the same as the corresponding taper angle of the armature. It is also possible to make the static iron core, the upper and lower end covers with pots, pole shoes, etc. into a whole. The invention adopts the design principles of electromagnetic operation and permanent magnet retention, and has simple mechanism, few moving parts and low failure rate. In particular, the pot-type end cover and tapered armature are used to improve the suction characteristics of the mechanism. It can be widely used in the field of medium and low voltage switches, and its production does not require very complicated processes and special materials, and can be easily mass-produced.

Description

technical field [0001] The invention belongs to the field of medium and low voltage switches, and relates to a permanent magnet operating mechanism applied to medium and low voltage switches such as circuit breakers and load switches. Background technique [0002] In the field of medium and low voltage switches, two kinds of switch operating mechanisms are generally used now. One is a spring energy storage type operating mechanism, and the other is an electromagnetic operating mechanism. In the actual use of the former, due to factors such as complex structure, many moving parts, large energy storage noise, high production process requirements, and low overall reliability, the switch sometimes refuses to move due to parts breakage, corrosion, out-of-stock, and stagnation. occur. And the latter, though simple in structure, still has the higher take-off, locking device of failure rate, and requires bigger operating work. Although the existing permanent magnet operating mech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H3/22H01H71/10H01H71/66
Inventor 郑士泉陈赤汉杨文海陈德桂
Owner 西安通大思源电器有限公司
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