CN101849269B - Electromagnetic device - Google Patents
Electromagnetic device Download PDFInfo
- Publication number
- CN101849269B CN101849269B CN200780101432XA CN200780101432A CN101849269B CN 101849269 B CN101849269 B CN 101849269B CN 200780101432X A CN200780101432X A CN 200780101432XA CN 200780101432 A CN200780101432 A CN 200780101432A CN 101849269 B CN101849269 B CN 101849269B
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- CN
- China
- Prior art keywords
- permanent magnet
- plate
- movable part
- baffle plate
- framework
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
- H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
- H01F7/1623—Armatures having T-form
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Magnetically Actuated Valves (AREA)
- Electromagnets (AREA)
Abstract
A regulating plate (26) for regulating the amount of magnetic flux in a magnetic path through which magnetic flux generated from a permanent magnet (23) is allowed to pass is arranged such that the plate is abuttable on a back plate (15) in parallel to a movable shaft (1). A part (26a) of the regulating plate (26) adjacent to the back plate (15) is shaped such that the width, or surface area of the part (26a) is smaller than that of a part (26b) of the regulating plate adjacent to an isolation spring (8). Magnetic saturation is caused in the part (26b) of the regulating plate so that the amount of magnetic flux of the permanent magnet (23) is less than a releasing force from the isolation spring (8), thus regulating the amount of magnetic flux passing.
Description
Technical field
The present invention relates to a kind of electromagnet apparatus, particularly preferably be applicable to the shutter that is provided with magnet exciting coil and permanent magnet.
Background technology
At shutters such as circuit breakers, its set inside has pair of electrodes, and movable side connecting rod (rod) is pulled out to the outside from an electrode, and the movable side connecting rod that is drawn out is connected with the movable axis that movable part (armature) is installed.In addition, when the magnet exciting coil to electromagnet apparatus applied exciting current, the magnetic attraction of consequent flux (magnetic flux) drove movable part to fixed part one side.And this actuating force is delivered to movable side connecting rod via movable axis, and an electrode is contacted with another electrode, and shutter is switched to closure state (closingstate) thus.As the method that is used to keep this closure state, there are constant excitation megnet (constantexcitation), mechanical latches (mechanical latch) and electromagnetic latch (electromagneticlatch).
Constant excitation megnet also continues energising to magnet exciting coil always after shutter is switched to closure state, make that closure state is able to keep, and therefore causes the increase of consumes electric power.In addition, mechanical latches waits and is kept closed through carry out the mechanical type lock bolt with suitable structure, therefore generally speaking requires complicated mode, and need be used for waiting through coating lubricant the maintenance of the consumption that suppresses drive part.
On the other hand; As disclosed in the TOHKEMY 2002-8498 communique; Electromagnetic latch utilizes the electromagnetic attraction of permanent magnet to be kept closed; When shutter is switched to closure state, magnet exciting coil is switched on or electrical current is reduced through stopping, can realizing saving energy.
Yet, when using the bigger permanent magnet of magnetic attraction along with the high performance of permanent magnet, if the magnetic attraction of permanent magnet can cause the problem that circuit breaker is opened circuit greater than the release force of cut-out spring (isolation spring).
On the other hand, under the situation of using the bigger permanent magnet of magnetic attraction, when using the bigger cut-out spring of spring pressure in order circuit breaker to be opened circuit, the problem that also exists electromagnet apparatus to maximize.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of electromagnet apparatus, it can suppress the maximization of electromagnet apparatus, reliably circuit breaker is opened circuit and can reduce the consumes electric power that is used to keep closure state.
In order to solve above-mentioned problem, the electromagnet apparatus of one aspect of the invention is characterized in that, comprising: the movable part that is installed on movable axis; Be inserted with above-mentioned movable axis, with contact of above-mentioned movable part or the fixed part that separates; The magnet exciting coil that disposes with the mode of surrounding above-mentioned movable part and said fixing portion; The cut-out spring that the mode that moves to the direction of above-mentioned fixed part with above-mentioned movable part is compressed; Generation is used to keep the permanent magnet of magnetic force of the contact condition of above-mentioned movable part and said fixing portion; Framework (frame), it surrounds above-mentioned magnet exciting coil and above-mentioned permanent magnet, and forms first flux path that the flux that utilizes above-mentioned magnet exciting coil and permanent magnet makes above-mentioned movable part move to the direction of above-mentioned fixed part; With the magnetic flux limiting mechanism; Its magnetic flux (magnetic flux content) to second flux path that makes the flux that produces from above-mentioned permanent magnet and see through limits, and makes that thus the magnetic attraction that is produced by above-mentioned permanent magnet is littler than the release force of above-mentioned cut-out spring.
In addition, the electromagnet apparatus of one aspect of the invention is characterized in that, comprising: be configured to the baffle plate (back plate) that can be connected to said frame and be fixed on above-mentioned movable part; Be configured to be connected to above-mentioned baffle plate and with the said frame above-mentioned permanent magnet of clamping in the lump push anchor clamps (clamp); Above-mentioned second flux path by said frame, be connected to the baffle plate of said frame and push anchor clamps and form, the part that above-mentioned magnetic flux limiting mechanism is constituted as on above-mentioned second flux path forms magnetic saturation more easily than other parts.
In addition, the electromagnet apparatus of one aspect of the invention is characterized in that, comprising: the baffle plate that is configured to be connected to said frame and is fixed on above-mentioned movable part; Be configured to be connected to above-mentioned baffle plate and with the anchor clamps of pushing of the said frame above-mentioned permanent magnet of clamping in the lump; And be arranged on said frame and the above-mentioned confinement plate of pushing between the anchor clamps and being configured to be connected to above-mentioned baffle plate; Above-mentioned second flux path is by with baffle plate, the confinement plate of said frame butt with push anchor clamps and form, and the part that above-mentioned magnetic flux limiting mechanism is constituted as above-mentioned confinement plate forms magnetic saturation more easily than other parts.
In addition, the electromagnet apparatus of one aspect of the invention is characterized in that: above-mentioned permanent magnet configuration is in the outside of above-mentioned magnet exciting coil.
Description of drawings
Fig. 1 is for being that boundary is represented the closure state of electromagnet apparatus and the sectional view of release condition at upside and downside respectively with center line C0.
Fig. 2 is the front elevation of expression from the schematic configuration of the observed electromagnet apparatus in right side of Fig. 1.
Fig. 3 is the side view of closure state of the electromagnet apparatus of presentation graphs 1.
Fig. 4 is the side view of release condition of the electromagnet apparatus of presentation graphs 1.
Embodiment
Below, with reference to accompanying drawing, the electromagnet apparatus of execution mode of the present invention is described.
Fig. 1 is for being that boundary is represented the closure state of electromagnet apparatus and the sectional view of release condition at upside and downside respectively with center line C0; Fig. 2 is the front elevation of expression from the schematic configuration of the observed electromagnet apparatus in right side of Fig. 1; Fig. 3 is the side view of closure state of the electromagnet apparatus of presentation graphs 1, and Fig. 4 is the side view of release condition of the electromagnet apparatus of presentation graphs 1.
In Fig. 1～Fig. 4, in electromagnet apparatus, be provided with the commentaries on classics 2 and fixed part 3 that can be in contact with one another or separate, and be provided with through the application of force so that the cut-out spring 8 that movable part 2 separates with fixed part 3.In addition, in electromagnet apparatus, be provided with and be used to magnet exciting coil 12 that movable part 2 is contacted with fixed part 3, and be provided with and produce the permanent magnet 23 that is used to keep movable part 2 and the magnetic force of the contact condition of fixed part 3.
Here, movable part 2 and fixed part 3 form cylindric, and movable part 2 is fixed in the movable axis 1 of the central part that runs through electromagnet apparatus, and movable axis 1 links through the action bars 30 of contact compression spring 29 (wipe spring) with circuit breaker.In addition, be inserted with movable axis 1 via being formed at its inner through hole, be provided with sliding bearing (slide bearing) 7 at the inner surface of the movable part 3 that is connected with movable axis 1 at fixed part 3.
In addition, the framework 4 of the tubular that surrounds movable part 2 and fixed part 3 is arranged, be formed with the through hole that is used to insert fixed part 3 at frame ends 4a in the arranged outside of movable part 2 and fixed part 3.In addition, framework 4 mode that adopts its bottom surfaces to carry out butt is fixed in mounting panel 5 by mounting screw 6.
In addition, the outer peripheral face at movable part 2 and fixed part 3 is formed with outstanding flange (flange) portion 9 of outer circumferential side to movable part 2 and fixed part 3 respectively.And, disposing cut-out spring 8 at the outer peripheral face of movable part 2 and fixed part 3, cut-out spring 8 is supported between the flange part 9 that is formed at movable part 2 and fixed part 3 respectively.In addition, that kind shown in the downside of Fig. 1 disposes movable part 2 and fixed part 3 with the mode that is formed with the spatial portion 10 that movable part 2 can separate with fixed part 3 when discharging.In addition, the outer circumferential side at movable part 2 and fixed part 3 disposes the magnet exciting coil 12 that is accommodated in the framework 4.
In addition, between magnet exciting coil 12 and movable part 2, dispose support column 13, support column 13 with and movable part 2 between be formed with gap 14 mode be inserted into movable part 2.In addition, be inserted with the baffle plate 15 that disposes with mode at movable axis 1 with movable part 2 butts.And baffle plate 15 is fastening by nut 16, by movable axis 1 supporting.In addition, framework panel 17 is arranged, dispose lateral frame 19 at the peripheral part of framework panel 17 in the arranged outside of baffle plate 15.Lateral frame 19 is fixed as one by screw 21 with framework 4.And then movable axis 1 connects the through hole of framework panel 17 and extends to the outside, and is equipped with through when discharging, stop the mobile brake (stopper) 18 of movable axis 1 with baffle plate 15 butts at framework panel 17.In addition, framework panel 17 also can form with lateral frame 19.
In addition, that kind as shown in Figure 2, permanent magnet 23 for example can be disposed at 2 positions in the outside of magnet exciting coil 12 in the bight of framework 4 with the mode with baffle plate 15 adjacency, can be fixed between framework 4 and the butt plate 22.Here, butt plate 22 disposes with movable axis 1 abreast, constitute can with baffle plate 15 butts, and support by support unit 24.In addition, support unit 24 is bent to form in such a way: extend in the vertical direction of movable axis 1 from the end of support column 13, and from extending to stop at the direction identical with the direction of principal axis of movable axis 1, it is configured to surround the part of magnet exciting coil 12.In addition, butt plate 22 is configured to and support unit 24 butts, through between framework 4 and support unit 24, being screwed into 3 hold-down screws 25 from the through hole that is formed at lateral frame 19, permanent magnet 23 is bearing between framework 4 and the support unit 24.In addition, be set to support unit 24, also can omit butt plate 22 through the parts that can be connected to baffle plate 15.
In addition; Like Fig. 3 and shown in Figure 4; Inboard in lateral frame 19; The confinement plate 26 that the magnetic flux that makes the flux path that the flux that produces from permanent magnet 23 sees through is limited is configured to can be with mode and baffle plate 15 butts parallel with movable axis 1, and through carry out the fastening butt plate 22 that is fixed in by 3 hold-down screws 25.Here, to constitute width segments be that surface area is littler than the confinement plate part 26b of cut-out spring 8 one sides to the confinement plate part 26a of baffle plate 15 1 sides of confinement plate 26.In addition, also can to form thickness thinner than the confinement plate part 26b of cut-out spring 8 one sides for the confinement plate part 26a of baffle plate 15 1 sides of confinement plate 26.
In addition, the flux φ that produces from permanent magnet 23
2Through circulating along permanent magnet 23 → butt plate 22 → baffle plate 15 → confinement plate 26 → framework 4, lateral frame 19 → permanent magnet 23; Form the second flux path 27b, and make magnetic attraction act on baffle plate 15, can keep the contact condition of movable part 2 and fixed part 3 thus; Even under the situation of the energising of cutting off magnet exciting coil 12, also can keep closure state.
In addition; The width of the confinement plate part 26a of baffle plate 15 1 sides through making confinement plate 26 is narrower than the confinement plate part 26b of cut-out spring 8 one sides; Can make the confinement plate part 26a of baffle plate 15 1 sides of confinement plate 26 form magnetic saturation more easily, more be easy to generate magnetic loss; Thereby can limit the magnetic flux of the second flux path 27b, make that the magnetic attraction that produces from permanent magnet 23 is littler than the release force of cut-out spring 8.
In addition, beyond the method that confinement plate 26 is set, it is littler than the release force of cut-out spring 8 also can to make the second flux path 27b constitute the magnetic flux of permanent magnet 23.
Below, the action of the electromagnet apparatus of Fig. 1～Fig. 4 is described.
That kind shown in the downside of Fig. 1, when electromagnet apparatus was release, movable part 2 disposed across spatial portion 10 and fixed part 3 relatively.Under this state, when give magnet exciting coil 12 energisings, when magnet exciting coil 12 is carried out excitation, the flux φ that produces at magnet exciting coil 12
1That kind shown in solid line; Mainly circulate along framework 4, lateral frame 19 → permanent magnet 23 → baffle plate 15 → support unit 24 → movable part 2 → fixed part 3 → framework 4; Form the first flux path 27a thus, and see through the flux φ of the permanent magnet 23 of the second flux path 27b
2Also collaborate in the first flux path 27a.
Then, utilize the flux φ that flows through flux path 27a, 27b respectively
1, φ
2Magnetic attraction movable part 2 is attracted to fixed part 3, as the upside of Fig. 1 and shown in Figure 3, movable part 2 moves and compresses cut-out spring 8 to the direction of fixed part 3, contacts with fixed part 3 through movable part 2 and forms closure state.In addition; Along with moving of movable part 2; Baffle plate 15 and butt plate 22 and confinement plate 26 butts, that kind shown in the upside of Fig. 1 forms the second flux path 27b that circulates along permanent magnet 23 → butt plate 22 → baffle plate 15 → confinement plate 26 → framework 4, lateral frame 19 → permanent magnet 23.In addition, when electromagnet apparatus forms closure state, utilize the holding section of the part of the action bars 30 that is arranged at not shown circuit breaker to engage, can stop moving of movable part 2, keep the compression energy of cut-out spring 8.
In addition, be used to magnetic attraction, movable part 2 contacted with fixed part 3 keep closure state,, can realize the saving of electric power through stopping to magnet exciting coil 12 energisings, perhaps reducing electrical current from the permanent magnet 23 of the second flux path 27b.
Then, when when removing from the clearance order of not shown central order room and with the engaging of holding section, the compression energy of cut-out spring 8 is released, as the downside of Fig. 1 and shown in Figure 4, movable part 2 separates with fixed part 3 and is switched to release condition.
Here, it is narrower than the confinement plate part 26b of cut-out spring 8 one sides that the confinement plate part 26a of baffle plate 15 1 sides of confinement plate 26 forms width, and the confinement plate 26 of therefore working as at the second flux path 27b has flux φ
2When flowing, magnetic flux is limited to form magnetically saturated mode at confinement plate part 26b.It is littler than the release force of cut-out spring 8 that this restriction can be set at the magnetic flux that makes permanent magnet 23.Consequently; Even under the situation that the performance of permanent magnet 23 is improved; Also can not make cut-out spring 8 maximizations and movable part 2 is separated with fixed part 3 reliably, and can suppress the maximization of electromagnet apparatus, and reduce the consumes electric power that is used to keep closure state.
In addition, as the downside of Fig. 1 and shown in Figure 4, between baffle plate 15 and confinement plate 26, form the gap during release, make and can quicken moving of movable part 2 when the closure owing to being provided with this gap, thereby can shorten closing time.
And then as confinement plate 26, the plate that used thickness is thinner than butt plate 22 can easily carry out the processing of restricted part.In addition, use, then also can omit butt plate 22 if butt plate 22 is replaced into confinement plate 26.And then, for example a side of confinement plate 26 or butt plate 22 and the gap size between the baffle plate 15 are being limited and producing under the situation of magnetic loss, it is contained in forms magnetically saturated part.
Utilizability on the industry
Electromagnet apparatus of the present invention for example can be applied to shutters such as circuit-breaker, leakage circuit breaker, the employed electromagnetic brake of tripper etc.; Can suppress the maximization of electromagnet apparatus and circuit breaker is opened circuit reliably, and can reduce the consumes electric power that is used to keep closure state.
Claims (2)
1. an electromagnet apparatus is characterized in that, comprising:
Be installed on the movable part of movable axis;
Be inserted with said movable axis, with contact of said movable part or the fixed part that separates;
The magnet exciting coil that disposes with the mode of surrounding said movable part and said fixed part;
The cut-out spring that the mode that moves to the direction of said fixed part with said movable part is compressed;
Generation is used to keep the permanent magnet of magnetic force of the contact condition of said movable part and said fixed part;
Framework, it surrounds said magnet exciting coil and said permanent magnet, and forms first flux path that the flux that utilizes said magnet exciting coil and permanent magnet makes said movable part move to the direction of said fixed part;
The baffle plate that is configured to be connected to said framework and is fixed on said movable part;
Be configured to be connected to said baffle plate and with the anchor clamps of pushing of the said framework said permanent magnet of clamping in the lump; With
Be arranged on said framework and the said confinement plate of pushing between the anchor clamps and being configured to be connected to said baffle plate,
It is narrower than the confinement plate part of said cut-out spring one side that the confinement plate of said baffle plate one side of said confinement plate partly forms width; Said confinement plate limits the magnetic flux of second flux path that makes the flux that produces from said permanent magnet and see through; Make that thus the magnetic attraction that produces from said permanent magnet is littler than the release force of said cut-out spring
Said second flux path is by the baffle plate that is connected to said framework, confinement plate and push anchor clamps and form.
2. electromagnet apparatus as claimed in claim 1 is characterized in that:
Said permanent magnet configuration is in the outside of said magnet exciting coil.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2007/071535 WO2009060508A1 (en) | 2007-11-06 | 2007-11-06 | Electromagnetic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101849269A CN101849269A (en) | 2010-09-29 |
| CN101849269B true CN101849269B (en) | 2012-09-05 |
Family
ID=40625423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200780101432XA Expired - Fee Related CN101849269B (en) | 2007-11-06 | 2007-11-06 | Electromagnetic device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5016680B2 (en) |
| CN (1) | CN101849269B (en) |
| WO (1) | WO2009060508A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5838559B2 (en) * | 2011-02-08 | 2016-01-06 | 富士電機株式会社 | Semiconductor device assembly jig and semiconductor device assembly method |
| JP2013004427A (en) * | 2011-06-20 | 2013-01-07 | Toshiba Corp | Solid insulation switch gear |
| CN104332345B (en) * | 2014-10-16 | 2017-03-01 | 平高集团有限公司 | A kind of ultrahigh speed mechanical switch and its switch fracture and its switch contact |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106831A (en) * | 1985-09-08 | 1986-11-26 | 福建省新技术推广中心 | The method for designing of DC electromagnet |
| US4940958A (en) * | 1988-09-29 | 1990-07-10 | Mitsubishi Denki Kabushiki Kaisha | Polarized electromagnetic apparatus |
| CN1784757A (en) * | 2003-05-09 | 2006-06-07 | 艾顿电气公司 | Electromagnetic actuator |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0115138Y2 (en) * | 1980-09-16 | 1989-05-08 | ||
| JPS6353375A (en) * | 1986-08-20 | 1988-03-07 | Matsushita Electric Ind Co Ltd | Gas cut-off device |
| JP2004172516A (en) * | 2002-11-22 | 2004-06-17 | Mitsubishi Electric Corp | Polarized electromagnet device |
| JP4630373B2 (en) * | 2006-12-18 | 2011-02-09 | 富士電機システムズ株式会社 | Electromagnet device |
-
2007
- 2007-11-06 CN CN200780101432XA patent/CN101849269B/en not_active Expired - Fee Related
- 2007-11-06 JP JP2009539894A patent/JP5016680B2/en not_active Expired - Fee Related
- 2007-11-06 WO PCT/JP2007/071535 patent/WO2009060508A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106831A (en) * | 1985-09-08 | 1986-11-26 | 福建省新技术推广中心 | The method for designing of DC electromagnet |
| US4940958A (en) * | 1988-09-29 | 1990-07-10 | Mitsubishi Denki Kabushiki Kaisha | Polarized electromagnetic apparatus |
| CN1784757A (en) * | 2003-05-09 | 2006-06-07 | 艾顿电气公司 | Electromagnetic actuator |
Non-Patent Citations (3)
| Title |
|---|
| JP昭57-55916U 1982.04.01 |
| JP昭63-53375A 1988.03.07 |
| JP特开2004-172516A 2004.06.17 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009060508A1 (en) | 2009-05-14 |
| CN101849269A (en) | 2010-09-29 |
| JPWO2009060508A1 (en) | 2011-03-17 |
| JP5016680B2 (en) | 2012-09-05 |
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| ASS | Succession or assignment of patent right |
Owner name: FUJI ELECTRIC CO., LTD. Free format text: FORMER OWNER: FUJI ELECTRIC SYSTEMS CO., LTD. Effective date: 20111017 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20111017 Address after: Japan's Kawasaki City Applicant after: Fuji Electric Co., Ltd. Co-applicant after: Meidensha Electric Manufacturing Co., Ltd. Address before: Tokyo, Japan, Japan Applicant before: Fuji Electric Systems Co., Ltd. Co-applicant before: Meidensha Electric Manufacturing Co., Ltd. |
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Granted publication date: 20120905 Termination date: 20171106 |
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