CN201444454U - Long-stroke permanent magnet mechanism - Google Patents
Long-stroke permanent magnet mechanism Download PDFInfo
- Publication number
- CN201444454U CN201444454U CN2008201577340U CN200820157734U CN201444454U CN 201444454 U CN201444454 U CN 201444454U CN 2008201577340 U CN2008201577340 U CN 2008201577340U CN 200820157734 U CN200820157734 U CN 200820157734U CN 201444454 U CN201444454 U CN 201444454U
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- iron core
- permanent magnet
- magnetic pole
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- stroke
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Abstract
The utility model relates to a long-stroke permanent magnet mechanism, which includes a movable iron core, a fixed iron core, a permanent magnet, a closing coil, an opening coil, drive rods, an upper magnetic pole, and a lower magnetic pole. The relative positions are as follows: the fixed iron core is arranged at the outermost periphery, the closing coil is arranged at the upper part inside the mechanism, the opening coil is arranged at the lower part inside the mechanism, the movable iron core is arranged at the center, the drive rods are arranged at the upper and the lower parts of the movable iron core, the permanent magnet is arranged between the closing coil and the opening coil, the upper magnetic pole is arranged on the closing coil and the lower magnetic pole is arranged on the opening coil. The movable iron core has a cylindrical body which has air guide holes penetrating from top to bottom, and lower frustums with smaller diameters; the shaft on the iron core adopts the drive rod; and both the upper magnetic pole and the lower magnetic pole of the fixed iron core have cavities corresponding to the frustums of the movable iron core, and air gaps at the upper part have a maximum size 'a' and a minimum size 'b'. Since the utility model has small volume and long stroke, the long-stroke permanent magnet mechanism can realize linear drive and possess certain implementation values when applied to transmission with longer strokes.
Description
Technical field
The utility model relates to a kind of long-stroke permanent magnet mechanism, belongs to the low-voltage circuit breaker technical field.
Background technology
In low-voltage distributing line and power consumption equipment, low-voltage circuit breaker closed or disconnect reaches the purpose of power supply, power failure and change-over circuit.
Permanent-magnet manipulating mechanism is a kind of circuit breaker driving mechanism that occurs the international nineties, and its maximum characteristics are simple in structure, the reliability height, and operation energy consumption is little.Permanent magnet mechanism is used comparative maturity on the mesohigh circuit breaker at present, especially be used as the operating mechanism of vacuum circuit-breaker, the electromagnetism the suction-combining force that it produces by permanent magnet makes that the moving contact of circuit breaker remains on branch, on the allocation that closes a floodgate really, and the cooperation excitation control circuit, the operation task of finish branch in real time, exactly, closing a floodgate.Improving constantly of permanent-magnet manipulating mechanism control precision can be realized effectively, be carried out accurately, realizes the intellectuality of circuit breaker.
And permanent magnet mechanism is applied to low-voltage circuit breaker still is a new problem, and the stroke output that especially realization is bigger on the permanent magnet mechanism of smaller size smaller is also compared difficult.A kind of effective solution route is to adopt connecting lever and connecting rod, the stroke of permanent magnet mechanism is transferred to the movement travel of required size, but this will increase the number and the quality of moving component, and can increase the volume of whole circuit breaker, and the occasion relatively stricter at some volume requirements can't be suitable for.
Summary of the invention
The purpose of this utility model provides a kind of long-stroke permanent magnet mechanism, and its maximum characteristics of this permanent magnet mechanism are that volume is less, and stroke is longer, can carry out linear drives to moving component.
For achieving the above object, the technical solution of the utility model is: this permanent magnet mechanism comprises fixed core, closing coil, moving iron core, permanent magnet, switching winding, drive rod, goes up magnetic pole, lower magnetic pole.Its relative position is: outermost is a fixed core, and inside upper part is that closing coil, bottom are switching winding, and the center is for moving unshakable in one's determination, it is upper and lower drive rod, between closing coil, the switching winding permanent magnet is arranged, have magnetic pole on the closing coil, have lower magnetic pole on the switching winding.
The beneficial effects of the utility model: because the volume of the utility model permanent magnet mechanism is little, stroke is long, in the big transmission application of some strokes, can realize linear drives, has certain implementary value.
Below in conjunction with drawings and Examples to the utility model detailed explanation of making comparisons.
Description of drawings
Fig. 1 is the utility model long-stroke permanent magnet mechanism structure sketch.
Embodiment
With reference to Fig. 1, this is the utility model long-stroke permanent magnet mechanism structure sketch.
As shown in the figure, this long-stroke permanent magnet mechanism comprises fixed core (1), closing coil (2), moving (3) unshakable in one's determination, permanent magnet (4) and (5), switching winding (6), drive rod (7), last magnetic pole (8), lower magnetic pole (9).Its relative position is: outermost is a fixed core, and inside upper part is that closing coil, bottom are switching winding, and the center is for moving unshakable in one's determination, it is upper and lower drive rod, between closing coil, the switching winding permanent magnet is arranged, have magnetic pole on the closing coil, have lower magnetic pole on the switching winding.
Described moving iron core is a cylinder in the middle of being shaped as, and the gas port that runs through up and down all has a low slightly little frustum of circular diameter up and down.
Described moving iron core, the axle on it is the drive rod that a non-magnet material is made.
Magnetic pole and lower magnetic pole all have and the moving corresponding cavity of frustum unshakable in one's determination on the described fixed core, and the top air gap is a to the maximum, and minimum is b.
The operation principle of long-stroke permanent magnet mechanism is as follows: moving iron core is gone up design the gas port that runs through up and down, and when moving unshakable in one's determination moving, the air in the end air gap can be flowed to the air gap of the other end by gas port, has reduced the resistance to moving iron core.Be assumed to gate-dividing state, moving iron core shape is that the centre is a cylinder, and a low slightly little frustum of circular diameter is all arranged up and down, and the gas port that runs through is up and down arranged on cylinder, and moving axle unshakable in one's determination is the drive rod that a non-magnet material is made.The last magnetic pole of fixed core and lower magnetic pole all have and the moving corresponding cavity of frustum unshakable in one's determination, just slightly larger in diameter some.The top air gap is a to the maximum, and minimum is b, and the stroke of permanent magnet mechanism is a, and a is bigger as seen from the figure, and b is less; And in the design of general permanent magnet mechanism, stroke is a, and air gap is exactly a when gate-dividing state.Notion according to magnetic resistance in the magnetic circuit: the magnetic resistance R of each magnetic circuit section
MkBe the magnetic potential difference U of this magnetic circuit section
Mk=H
kl
kWith the magnetic flux φ in this magnetic circuit section
kRatio, have
Moving iron core of the utility model permanent magnet mechanism and fixed core be structural design so, make air gap distance reduce greatly, then the magnetic resistance of air gap part also reduces a lot, and in the whole magnetic circuit based on air-gap reluctance, so the magnetic resistance of whole magnetic circuit reduces greatly, under certain magnetomotive force, can obtain bigger magnetic attraction.
Moving upward design unshakable in one's determination has several gas ports that runs through up and down, and when it moved, the air in the end air gap can flow to the air gap of the other end through gas port, had reduced greatly moving resistance unshakable in one's determination.During combined floodgate, the closing coil energising, moving iron core moves upward.
Though the utility model is described with reference to the above embodiments; but those of ordinary skill in the art; will be appreciated that above embodiment is used for illustrating the utility model; should understand and wherein can make variations and modifications and do not break away from the utility model in a broad sense; so be not that conduct is to qualification of the present utility model; as long as in connotation scope of the present utility model, to the variation of above-described embodiment, the protection range that distortion all will fall into the utility model claim.
Claims (2)
1. long-stroke permanent magnet mechanism, comprise iron core and coil, it is characterized in that: also comprise moving iron core, fixed core, permanent magnet, closing coil, switching winding, drive rod, go up magnetic pole, lower magnetic pole, its relative position is: outermost is a fixed core, and inside upper part is that closing coil, bottom are switching winding, and the center is for moving unshakable in one's determination, it is upper and lower drive rod, between closing coil, the switching winding permanent magnet is arranged, have magnetic pole on the closing coil, have lower magnetic pole on the switching winding.
2. long-stroke permanent magnet as claimed in claim 1 mechanism is characterized in that: described moving iron core, the axle on it is the drive rod that a non-magnet material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008201577340U CN201444454U (en) | 2008-12-25 | 2008-12-25 | Long-stroke permanent magnet mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008201577340U CN201444454U (en) | 2008-12-25 | 2008-12-25 | Long-stroke permanent magnet mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201444454U true CN201444454U (en) | 2010-04-28 |
Family
ID=42549135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008201577340U Expired - Lifetime CN201444454U (en) | 2008-12-25 | 2008-12-25 | Long-stroke permanent magnet mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201444454U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474301A (en) * | 2013-09-27 | 2013-12-25 | 合肥凯高电气设备有限公司 | Long-stroke permanent magnet circuit breaker structure |
| CN103489725A (en) * | 2013-09-26 | 2014-01-01 | 东南大学 | Operating mechanism of high-voltage circuit breaker |
| CN106847571A (en) * | 2016-12-31 | 2017-06-13 | 浙江宝威电气有限公司 | A kind of novel permanent magnetic mechanism |
| CN106847570A (en) * | 2016-12-31 | 2017-06-13 | 浙江宝威电气有限公司 | A kind of stable permanent magnet mechanism |
-
2008
- 2008-12-25 CN CN2008201577340U patent/CN201444454U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489725A (en) * | 2013-09-26 | 2014-01-01 | 东南大学 | Operating mechanism of high-voltage circuit breaker |
| CN103489725B (en) * | 2013-09-26 | 2016-05-18 | 东南大学 | A kind of high-voltage breaker operation mechanism |
| CN103474301A (en) * | 2013-09-27 | 2013-12-25 | 合肥凯高电气设备有限公司 | Long-stroke permanent magnet circuit breaker structure |
| CN103474301B (en) * | 2013-09-27 | 2015-10-21 | 合肥凯高电气设备有限公司 | A kind of long-stroke permanent magnet circuit breaker structure |
| CN106847571A (en) * | 2016-12-31 | 2017-06-13 | 浙江宝威电气有限公司 | A kind of novel permanent magnetic mechanism |
| CN106847570A (en) * | 2016-12-31 | 2017-06-13 | 浙江宝威电气有限公司 | A kind of stable permanent magnet mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100428 |
|
| CX01 | Expiry of patent term |