CN2631021Y - Bistable permanent-magnet mechanism - Google Patents
Bistable permanent-magnet mechanism Download PDFInfo
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- CN2631021Y CN2631021Y CN 03259332 CN03259332U CN2631021Y CN 2631021 Y CN2631021 Y CN 2631021Y CN 03259332 CN03259332 CN 03259332 CN 03259332 U CN03259332 U CN 03259332U CN 2631021 Y CN2631021 Y CN 2631021Y
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- permanent magnet
- unshakable
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- magnetic
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Abstract
The utility model relates to an electromagnetic actuator, particularly to a double stable permanent magnetic actuator. The actuator includes a moving iron core, a coil, a fixed core and a permanent magnet. The permanent magnet and the coil are located between the moving iron core and the fixed core, the key point of the structure is that the magnetic pole direction of the fixed magnet is vertical to the motion direction of the moving iron core, the pair of fixed magnets are separated by the moving iron core, a magnetizer is located between the adjacent fixed magnets and certain interval is kept between the fixed magnet and the magnetizer. The advantage of the utility model is that magnetic line of the fixed magnet crossing the magnetizer form a magnetic circuit, due to the magnetizer locating between the adjacent magnets, which can reduce the reluctance in the core magnetic circuit and increase the magnetic flux, the coil turns can be reduced saving the raw materials and reducing the heat productivity, no harmful effects on other electronic components can be detected, safety and reliable credibility, especially, the utility model has an important significance to the miniaturized electromagnetic actuators with low voltage.
Description
Technical field
The utility model relates to a kind of electromagnetic actuator, particularly a kind of bistable-state permanent magnet mechanism.
Background technology
Although permanent magnet mechanism has different version, its operation principle broadly similar.Permanent magnet mechanism is to realize closing a floodgate with permanent magnet keeping and the separating brake maintenance with regard to its essence, and its combined floodgate all is to adopt Electromagnetically-operating usually.Existing permanent magnet mechanism such as Fig. 1, shown in Figure 2, the magnet ring moving is unshakable in one's determination arranges, because the relative permeability of permanent magnet is near the magnetic permeability of air, be that its magnetic resistance is close with the magnetic resistance of magnetic gap, the magnetic line of force in the magnetic field that coil produced must be by moving unshakable in one's determination--and magnetic gap-fixed core-moving is unshakable in one's determination and form closed magnetic circuit, or form closed magnetic circuit by moving iron core-permanent magnet-fixed core-moving unshakable in one's determination, because the existence of magnetic gap and permanent magnet, increased magnetic resistance, weakened the magnetic force that coil produces, therefore the number of ampere turns of coil is big, has increased the energy consumption and the volume of bistable-state permanent magnet mechanism.Especially under low operating voltage, will increase the volume of entire mechanism greatly, be unfavorable for the miniaturization of product, and cause the waste of material.
Summary of the invention
The utility model purpose is to overcome above-mentioned shortcoming, and providing a kind of can work under low voltage condition, and consume energy little, volume is little, cost is low, the bistable-state permanent magnet mechanism of reliable operation.
The technical scheme that the utility model adopted is that bistable-state permanent magnet mechanism comprises moving iron core, coil, fixed core, permanent magnet, permanent magnet, coil are between moving iron core and fixed core, its structural feature is, the pole orientation of permanent magnet is vertical with the moving direction of motion unshakable in one's determination, permanent magnet is separated by in pairs and is moved unshakable in one's determination the layout, between two adjacent permanent magnets magnetic conductor is installed, gapped between permanent magnet and the magnetic conductor.
When moving upper surface unshakable in one's determination and fixed core adhesive, the magnetic loop that the magnetic line of force forms that permanent magnet produces is permanent magnet-moving iron core-fixed core-permanent magnet, i.e. a-b-c-d-a; Be moving iron core-fixed core-magnetic conductor-moving iron core by the flux loop that is produced behind the coil electricity, a '-d '-c '-b '-a ', the magnetic line of force that is coil forms magnetic loop through magnetic conductor, whole loop does not have magnetic gap, because the magnetic permeability of magnetic conductor times does not wait than the big hundreds of-several ten thousand of magnetic permeability of air, and R (magnetic resistance)=L (length of magnetic path)/μ S (magnetic permeability * area), therefore the little hundreds of-several ten thousand of the existing permanent magnet mechanism of magneto resistive ratio times does not wait, under same big magnetic force, this makes the number of ampere turns of required coil significantly reduce, both save raw material, reduced the volume of coil, saved the energy again, reduce caloric value, other electron component is had no adverse effects, and fail safe is good, reliable operation, significant to the miniaturization electromagnetism executive component of making under the low-voltage condition especially.Since gapped between permanent magnet and the magnetic conductor, the magnetic line of force short circuit in the horizontal direction of permanent magnet avoided, the magnetic line of force is concentrated by moving iron core formed the loop with the vertical conjunction plane of fixed core, guaranteed the suction of permanent magnet.
The magnetic pole arrangement of the utility model permanent magnet is:
The magnetic pole homopolarity of permanent magnet is relative in pairs.
Further be: moving iron core is quadrangle, is preferably square, and a pair of permanent magnet is arranged on the tetragonal relative edge, and the both sides positioned opposite has magnetic conductor in addition.
Or: moving unshakable in one's determination cylindrical, a pair of permanent magnet is that center line is symmetrically distributed with moving axis unshakable in one's determination, magnetic conductor is that center line is symmetrically distributed with moving axis unshakable in one's determination also, preferably magnetic conductor becomes 90 degree with permanent magnet, the end surface shape of magnetic conductor and permanent magnet should be fitted closely with the surface of moving iron core simultaneously, makes the gap between them be minimum.
Reveal and reduce magnetic gap in the flux loop in order to reduce the magnetic line of force that coil produces, the utility model is also further concrete in design: moving guide rod unshakable in one's determination is that non-magnet material is made.
In order to reduce magnetic gap, preferably magnetic conductor and fixed core are made one.
The utility model can attach together with other element and be integral, and makes a kind of permanent magnetic bi-stable actuator, as itself and valve are connected to form the permanent-magnet electromagnetic valve.Concrete scheme is as follows:
Valve comprises a slide block, transmission, spool, and slide block and guide rod join, and the master driver and the slide block of transmission join, and the transmission Passive part links to each other with spool.
Further be specially: transmission is a gear pair, and its master driver is fixed on the valve body by rotating shaft, and the rotating shaft two ends are respectively bevel type gear, chute, and the slide bar of slide block passes chute, and Passive part is a roller gear.
Power consumption is little because the coil of bistable-state permanent magnet mechanism of the present utility model has, the low characteristics of caloric value, the drive circuit of itself and signal receiving circuit, decoding circuit and permanent magnetic bi-stable final controlling element is attached together the operate as normal and the useful life that together can not influence these circuit, thereby can be made into password permanent-magnet electromagnetic valve or password permanent-magnet electromagnetic lock.
The utility model advantage is owing to be furnished with magnetic conductor between adjacent permanent magnet, the magnetic line of force of coil forms magnetic loop through magnetic conductor, has reduced the magnetic resistance in the coil magnetic loop, increases magnetic flux, promptly increase magnetic force, thereby reduce the coil number of ampere turns, both saved raw material, saved the energy again, reduce caloric value, other electron component is had no adverse effects, and fail safe is good, reliable operation, and is significant to the miniaturization electromagnetism executive component of making under the low-voltage condition especially.
Description of drawings
Fig. 1 is existing bistable-state permanent magnet mechanism structural representation
Fig. 2 is the A-A cutaway view of Fig. 1
Fig. 3 is a structural representation of the present utility model
Fig. 4 is the side sectional view of Fig. 3
Fig. 5 is the B-B cutaway view of Fig. 3
Fig. 6 is the structural representation of the utility model embodiment 2
Fig. 7 is the structural representation of the utility model embodiment 3
Fig. 8 is the C-C cutaway view of Fig. 7
Wherein: 1 moving 11 guide rods, 2 permanent magnets, 41 first coils, 42 second coils, 6 fixed cores, 7 magnetic conductors, 8 valves, 81 slide blocks, 811 slide bars, 821 master drivers, 8211 chutes, 8212 rotating shafts, 8213 bevel type gears, 822 Passive parts, 83 spools unshakable in one's determination
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail
As Fig. 3, Fig. 4, shown in Figure 5, embodiment 1, bistable-state permanent magnet mechanism comprises moving unshakable in one's determination 1, coil, fixed core 6, permanent magnet 2, permanent magnet 2, coil is between moving iron core 1 and fixed core 6, the pole orientation of permanent magnet 2 is vertical with moving unshakable in one's determination 1 the direction of motion, first coil 41, second coil 42 lays respectively at the two ends of permanent magnet 2, moving unshakable in one's determination 1 is square, the magnetic pole homopolarity positioned opposite of a pair of permanent magnet 2 is on foursquare relative edge, the both sides positioned opposite has magnetic conductor 7 in addition, magnetic conductor 7 is made one with fixed core 6, and is gapped between permanent magnet 2 and the magnetic conductor 7, and moving unshakable in one's determination 1 guide rod 11 is to be made by copper product.
Its operation principle is: when bistable-state permanent magnet mechanism is in as shown in the figure closure state, when promptly moving upper surface unshakable in one's determination and fixed core adhesive, the magnetic loop that the magnetic line of force forms that permanent magnet produces is permanent magnet-moving iron core-fixed core--permanent magnet, i.e. a-b-c-d-a; First coil 41, the opposite magnetic line of force of second coil, 42 energising back magnetic line of force directions that produced and permanent magnet, the magnetic line of force of first coil 41 is by moving iron core-fixed core--the magnetic conductor-moving magnetic loop that forms unshakable in one's determination, be a '-d '-c '-b '-a ', the magnetic force that this moment, coil produced has overcome the suction of permanent magnet, make it to produce downward movement tendency, the magnetic line of force of second coil 42 is by moving lower surface unshakable in one's determination, and----the moving iron core of fixed core--magnetic conductor--forms magnetic loop to magnetic gap, be e '-f '-g '-h '-e ', make lower end unshakable in one's determination produce suction, under the acting in conjunction of two coils, moving iron core moves downward.Along with moving unshakable in one's determination moving downward, the more and more littler both magnetic gaps in gap of moving lower surface unshakable in one's determination and fixed core are more and more littler, in case moving iron core has been crossed center line, the magnetic line of force that permanent magnet sent is formed the magnetic resistance in loop less than the magnetic resistance that is formed the loop by the upper end by the lower end, form the loop so the magnetic line of force of permanent magnet is more and more by the lower end, the direction of this magnetic line of force in moving iron core is identical with the moving direction of motion unshakable in one's determination, so unshakable in one's determination the acceleration moved downward, finish breakdown action, coil is stopped power supply.Vice versa, makes iron core be subjected to a thrust that makes progress behind the coil electricity, and moving iron core moves upward and promptly moves towards closing direction.
As shown in Figure 6, embodiment 2, moving unshakable in one's determination 1 is cylindrical, a pair of permanent magnet 2 is that center line is symmetrically distributed with moving unshakable in one's determination 1 axis, magnetic conductor 7 is that center line is symmetrically distributed with moving unshakable in one's determination 1 axis also, 2 one-tenth 90 degree of best magnetic conductor 7 and permanent magnet, and magnetic conductor 7 should be fitted with the surface of moving iron core 1 closely with the end surface shape of permanent magnet 2 simultaneously, make the gap between them be minimum, guide rod 11 is to have aluminum to make.It is identical with embodiment 1 that all the other do not state part.
As Fig. 7, shown in Figure 8, embodiment 3, bistable-state permanent magnet mechanism and valve are connected to form the permanent-magnet electromagnetic valve, and valve 8 comprises a slide block 81, transmission, spool 83, and slide block 81 joins with guide rod 11, transmission is a gear pair among the figure, its master driver 821 is fixed on the valve 8 by rotating shaft 8212, and rotating shaft 8212 two ends are respectively bevel type gear 8213, chute 8211, and the slide bar 811 of slide block 81 passes chute 8211, the Passive part 822 of transmission is a roller gear, and it links to each other with spool 83.It is identical with embodiment 1 that all the other do not state part.
Its operation principle is: when guide rod 11 moved downward, slide bar 811, chute 8211 moved downward, and bevel type gear 8213 moves counterclockwise, and roller gear 822 rotates, and drove spool 83 coaxial rotation 90 degree, and the passage of valve is opened; Otherwise valve cuts out.
Claims (10)
1. bistable-state permanent magnet mechanism comprises moving (1), coil unshakable in one's determination, fixed core (6), permanent magnet (2), permanent magnet (2), coil are positioned between moving (1) unshakable in one's determination and the fixed core (6), it is characterized in that, the pole orientation of permanent magnet (2) is vertical with the direction of motion of moving (1) unshakable in one's determination, permanent magnet (2) is separated by in pairs and is moved (1) unshakable in one's determination layout, and magnetic conductor (7) is installed between two adjacent permanent magnets (2).
2. bistable-state permanent magnet mechanism according to claim 1 is characterized in that, and is gapped between permanent magnet (2) and the magnetic conductor (7).
3. bistable-state permanent magnet mechanism according to claim 1 is characterized in that, the magnetic pole homopolarity of permanent magnet (2) is relative in pairs.
4. bistable-state permanent magnet mechanism according to claim 1 is characterized in that, the guide rod (11) of moving (1) unshakable in one's determination is made for non-magnet material.
5. bistable-state permanent magnet mechanism according to claim 1 is characterized in that, moving (1) unshakable in one's determination is quadrangle, and a pair of permanent magnet (2) is arranged on the tetragonal relative edge, and the both sides positioned opposite has magnetic conductor (7) in addition.
6. bistable-state permanent magnet mechanism according to claim 1, it is characterized in that, moving (1) unshakable in one's determination is cylindrical, a pair of permanent magnet (2) is that center line is symmetrically distributed with the axis of moving (1) unshakable in one's determination, magnetic conductor (7) is that center line is symmetrically distributed with the axis of moving (1) unshakable in one's determination also, and magnetic conductor (7) becomes 90 degree with moving (1) unshakable in one's determination.
7. bistable-state permanent magnet mechanism according to claim 1 is characterized in that, magnetic conductor (7) is made one with fixed core (6).
8. bistable-state permanent magnet mechanism according to claim 1 is characterized in that, the guide rod (11) of moving (1) unshakable in one's determination links to each other with a valve (8).
9. bistable-state permanent magnet mechanism according to claim 8, it is characterized in that, valve (8) comprises a slide block (81), transmission (82), spool (83), slide block (81) joins with guide rod (11), the master driver (821) of transmission (82) joins with slide block (81), and transmission (82) Passive part (822) links to each other with spool (83).
10. bistable-state permanent magnet mechanism according to claim 9, it is characterized in that, transmission (82) is a gear pair, its master driver (821) is fixed on the valve (8) by rotating shaft (8212), rotating shaft (8212) two ends are respectively bevel type gear (8213), chute (8211), the slide bar (811) of slide block (81) passes chute (8211), and Passive part (822) is a roller gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03259332 CN2631021Y (en) | 2003-07-02 | 2003-07-02 | Bistable permanent-magnet mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03259332 CN2631021Y (en) | 2003-07-02 | 2003-07-02 | Bistable permanent-magnet mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2631021Y true CN2631021Y (en) | 2004-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03259332 Expired - Fee Related CN2631021Y (en) | 2003-07-02 | 2003-07-02 | Bistable permanent-magnet mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2631021Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620913B (en) * | 2009-06-15 | 2012-06-06 | 哈尔滨工程大学 | Double electromagnet |
| CN101630567B (en) * | 2008-06-30 | 2013-08-21 | 欧姆龙株式会社 | Electromagnet device |
| CN108766712A (en) * | 2018-07-31 | 2018-11-06 | 苏州耀德科电磁技术有限公司 | A kind of heat dissipation type sucker electromagnet |
-
2003
- 2003-07-02 CN CN 03259332 patent/CN2631021Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630567B (en) * | 2008-06-30 | 2013-08-21 | 欧姆龙株式会社 | Electromagnet device |
| CN101620913B (en) * | 2009-06-15 | 2012-06-06 | 哈尔滨工程大学 | Double electromagnet |
| CN108766712A (en) * | 2018-07-31 | 2018-11-06 | 苏州耀德科电磁技术有限公司 | A kind of heat dissipation type sucker electromagnet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |