CN101324020B - Rotatory direct drive device - Google Patents
Rotatory direct drive device Download PDFInfo
- Publication number
- CN101324020B CN101324020B CN200810091501XA CN200810091501A CN101324020B CN 101324020 B CN101324020 B CN 101324020B CN 200810091501X A CN200810091501X A CN 200810091501XA CN 200810091501 A CN200810091501 A CN 200810091501A CN 101324020 B CN101324020 B CN 101324020B
- Authority
- CN
- China
- Prior art keywords
- drive unit
- direct drive
- passive
- unit
- rotor
- 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
Links
- 238000005406 washing Methods 0.000 claims abstract description 21
- 238000004804 winding Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 8
- 239000011159 matrix material Substances 0.000 claims description 8
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 230000006698 induction Effects 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 9
- 229920003023 plastic Polymers 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 6
- 238000003754 machining Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
- H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2791—Surface mounted magnets; Inset magnets
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
- H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Textile Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Power Steering Mechanism (AREA)
- Vehicle Body Suspensions (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Abstract
The invention relates to a rotary direct drive plant comprising a drive unit (1) and a driven unit (4), wherein, the drive unit (1) includes at least a coil winding (2) and a plurality of drive electrodes (3), and the driven unit (4) separated from the drive unit (1) via air gap, and capable of rotating relatively to the drive unit (1), is composed of a plurality of driven electrodes (10) opposite to the drive electrodes (3) and a magnetic lapping member connected to the driven electrodes. According to the invention, the lapping member consists of multiple layers of attachment straps (12). It is preferred that, the driven unit (4) includes a plurality of permanent-magnets (10). The attachment straps (12 can be winded helically. The direct drive plant is especially suitable for being used as a drive plant of a washing machine, wherein, the driven unit is configured as an external rotor being connected with a wash bucket.
Description
Technical field
The present invention relates to a kind of direct drive unit of rotation, said direct drive unit comprises active cell and the passive unit with at least one electric coil winding.These two unit have magnetic pole, and wherein, the magnetic pole of passive unit preferably constitutes through a large amount of and the opposed permanent magnet of electric coil winding.In known way, a kind of like this electromagnetism direct drive unit has bearing unit and rack unit, to allow the relative motion between active cell and passive unit.Wherein active cell can be constructed to stator, and passive unit forms the rotor of direct drive unit simultaneously.
Background technology
The operation logic of electromagnetism direct drive unit is known in the prior art already.Through the magnetic field that a large amount of electric coils that are controlled at the coil windings of arranging on the active cell will produce a kind of " migration " or rotate, wherein, changes of magnetic field makes passive unit/rotor produce rotation and moves.For the motor force that is generated is not delivered to functional unit to be driven with having transmission device, preferably use direct drive unit.Can simply control the rotary speed and the direction of rotation of the direct drive unit of rotation by the control corresponding unit.For high driving force; What special significance was arranged in direct drive unit is; The air gap that between stator and rotor, constitutes is maintained as far as possible little and in the neighboring area, be consistent; This has proposed a requirement high for the manufacturing of electric machine part, particularly works as stator and rotor and has the situation of large-size.
The permanent magnet of on the passive unit of direct drive unit, arranging (the passive utmost point) must connect through the mutual magnetic of bridge piece.In order to reach desired high magnetic field intensity, used solid, closed overlap joint ring, said overlap joint ring preferably is connected with each permanent magnet material of rotor with engaging.In process of production, a kind of so accurate manufacturing that overlaps ring means special requirement, and this point has influenced manufacturing cost fatefully.Good magnetic between permanent magnet and overlap joint ring connects, these magnets bonded or otherwise material be fixed to overlap joint with engaging and encircle.The relative positioning each other of these magnets carries out with high accuracy equally, because the motor force that under position error, can realize can reduce, and the synchronous operation meeting of motor is disturbed by serious.
In the recent period, direct drive unit not only is applied to accurate application, and for example also is used for housed device, to improve driving force and to reduce and safeguard.For example DE 100 25 016 B4 disclose a kind of carrying out washing treatment equipment that has with the drive motors of direct drive unit form.At this, this direct drive unit has PM rotor, and the axle of the washing drum of this PM rotor and floating support ties and connects.The stator of this direct drive unit is connected with bearing, wherein, between rotor and stator, keeps air gap in due form.This rotor is equipped with a large amount of permanent magnets, and these permanent magnets are arranged in the inboard of rotor cap equably.Said rotor cap is processed with cup-shaped deep-draw part or aluminium moulding, and an iron rake with three to six teeth fitting of side with annular is used for magnetic loop overlap joint within it, is fixed with a large amount of permanent magnets above that.In order to make the quality that moves keep as far as possible little, an iron rake with three to six teeth fitting thin wall-type ground is as much as possible made, and wherein, should make strong as far as possible magnetic field in this an iron rake with three to six teeth fitting, circulate simultaneously.In order to satisfy these opposite requirements, this an iron rake with three to six teeth fitting must be by the made of costliness.The very little manufacturing of tolerance of an iron rake with three to six teeth fitting of thin-walled has simultaneously caused serious problem.
DE 690 05 553 T2 also disclose a kind of drive unit that is used for washing machine, and this drive unit has adopted the direct drive unit with reluctance motor.Its rotor both can be that outside rotating device also can be the internal operations device.In the document, exist following situation as special problem; Promptly the small air gap size (for example 0.25mm) of expectation only can be abideed by under very high machining accuracy situation; And because the reason of manufacturing expense must be accepted obviously more air gaps size, yet this will cause the obvious reduction of power of motor.In the embodiment of the direct drive unit shown in the document; In passive unit, abandoned permanent magnet; Wherein, here the magnetic pole of passive unit (it is arranged on common mode lower toothed ground) must connect through the bridge piece of ability magnetic conduction, and said bridge piece is constructed to closed ring.
DE 697 09 868 T2 have described a kind of electric rectification direct drive unit that is used for washing machine drum.The stator of its motor is fixed on the support of washing machine, and rotor directly is arranged on the axle of laundry wheel simultaneously.This rotor has the iron core of the annular of weak magnetic once more, fixing a large amount of permanent magnets on this iron core.
Summary of the invention
Therefore task of the present invention is, a kind of improved direct drive unit is provided, and in this drive unit, can in the moulding of passive unit, realize very high precision with lower machining accuracy, so that realize using material input seldom to reach very high driving force.Especially should be at the little air gap of realizing under few harsh machining tolerance between stator and the rotor.At last, another part invention task is, the connection between the bridge piece that should be able to be based upon permanent magnet and magnetic under the structure situation of the passive unit that permanent magnet excites simplifiedly, and the accurate location that can realize these magnets simplifiedly.
Described invention task will solve through a kind of direct drive unit.
Direct drive unit according to rotation of the present invention; Have active cell and passive unit; Said active cell comprises at least one electric coil winding and a large amount of initiatively utmost points, and said passive unit is opened through air gap separation and rotatable with respect to said active cell from said active cell, and said passive unit comprises and the extremely opposed a large amount of passive utmost points of said active and the bridge piece that is connected to the magnetic of the said passive utmost point; It is characterized in that the lap belt that said bridge piece is implemented by multilayer ground.
Principal advantages according to direct drive unit of the present invention is; Needn't be for example make the overlap joint ring of closed in itself by the material of weak magnetic, but said bridge piece is implemented to make in the multilayer ground through thin weak magnetic material band when making passive unit through milling or turning.
The preferred embodiment of this direct drive unit comprises a large amount of permanent magnets as the part of passive unit, and these permanent magnets form the passive utmost point.Can consider also on the principle that the magnetic pole of abandoning permanent magnet and replacing its this passive unit is processed through material that can the magnetic conduction, as its generally speaking by reluctance motor known.When production was equipped with the passive utmost point of permanent magnet, these magnets preferably were fitted in the ground floor of lap belt, engaged the magnetic flux that connects and be implemented in the optimization between these magnets and the bridge piece thus to realize material.
Particularly advantageously be that when passive unit comprises nonmagnetic matrix, for example during vinyl disc, above that, permanent magnet can be fixed or guide, and is provided for the guiding piece of the winding of lap belt simultaneously.A kind of like this plastic substrate can be fabricated to plastic injection piece with very high precision, wherein, and the basic configuration of given passive unit in advance.
Lap belt can for example be a steel band, is wound on the matrix to its spirality, and has 0.1 to the interior thickness of 2mm scope.In a variation, wherein realize higher DIMENSIONAL STABILITY and can avoid that lap belt is not that spirality ground is fixed on the matrix in epitrochanterian imbalance, but layer being fixed on the matrix with a large amount of arranged concentric.Each of lap belt layer can be fitted each other or power interconnects ordinatedly through implementing of last one deck correspondingly tightly.
Passive unit is constructed to outside rotating device in special preferred embodiment.
According to direct drive unit of the present invention, have the lap belt of being twined, be particularly suitable for drive unit as washing machine, wherein, rotor can directly be connected with the laundry wheel of rotation.In this case, stator can be part and/or the outside part of washing machine shell in the outside of washing tank.
Description of drawings
According to the preferred embodiment of following direct drive unit of the present invention and combine accompanying drawing to obtain other variation, advantage and details.Wherein:
Fig. 1 illustrates the exploded view according to the simplification of the direct drive unit with rotor and stator of the present invention;
Fig. 2 illustrates the detail view of the intercepting that is encased in the direct drive unit in the washing machine;
Fig. 3 illustrates the detail view according to the rotor of direct drive unit of the present invention.
The specific embodiment
Fig. 1 shows a preferred embodiment according to direct drive unit of the present invention with exploded view.Said direct drive unit has active cell usually, and this active cell has at least one electric coil winding.Said electric coil winding comprises a large amount of coils, and these coil distribution are around active cell and be in operation and with controlled current of electric it supplied power.Usually the coil bundle of on soft iron core, arranging has constituted the magnetic level of active cell, also is described to the initiatively utmost point subsequently.Said direct drive unit comprises passive unit in addition, and it has the passive utmost point of a large amount of magnetic effectiveness, and the quantity of the passive utmost point is usually different with the quantity of the active utmost point and become predetermined ratio with it.The soft iron that the said passive utmost point is arranged by profile of tooth under simple scenario partly constitutes.In order to obtain higher driving force, to be regarded as herein as in the preferred embodiment, said passive unit comprises a large amount of permanent magnets, these permanent magnets are distributed in around the passive unit and form the passive utmost point.Under any circumstance each passive utmost point all must magnetically be coupled to each other through bridge piece, is intended to generate the necessary magnetic field of driving force with foundation.According to the said active cell of various embodiment can be that the moving component or the passive unit of motor can be the moving component of motor; Wherein, When said active cell is the stator of engine; Can realize simple structure, this is because electric current is provided needn't in this case the unit (rotor) of motion.
Among the embodiment shown in Figure 1, the active cell of direct drive unit constitutes stator 1, and said stator 1 is equipped with a large amount of electric coil 2, on the coil carrying device that these coils distribute with being arranged in face side or on the active utmost point 3.Through the passive unit of rotor 4 formation direct drive unit, this rotor 4 is configured to outside rotating device and centers on stator 1.Design axle bolt 5 (with reference to Fig. 2) in addition, it is installed in the unshowned machine element.The embodiment of direct drive unit described herein is configured to be used for the drive motors of washing machine especially.In this embodiment, rotor 4 comprises the rotor disk 6 of big surface structure, and this rotor disk 6 is made for vinyl disc, and can be connected in (not shown) on the washing drum of washing machine.
Fig. 2 shows the direct drive unit under assembled state according to Fig. 1 with the detail view of intercepting.Can see that rotor disk 6 has around the collar of arranging 7, this collar 7 is around being positioned at inner stator 1.Stator 1 is fixedly connected with washing tank 8, and this washing tank 8 is fixed on the housing 9 of washing machine in its that side.
At a large amount of permanent magnet 10 of disposed inboard of the collar 7 of rotor disk, this can identify from detail view in Fig. 3 well.These permanent magnets 10 have constituted the passive utmost point of rotor, and opposed with the coil carrying device/active utmost point 3 of stator.Under the preferred embodiment situation of here describing, the position of permanent magnet 10 is predetermined through receiving slit, and these receiving slits are formed between each plastic teeth 11.These plastic teeth are parts of rotor disk 6, and they for example can be used as plastic injection piece production.
When producing rotor, these permanent magnets are fixed in the receiving slit that constitutes between the plastic teeth 11, to resist the mobile of tangential direction and to prevent landing radially.Original the fixing of permanent magnet 10 then for example through realizing on the bridge piece 12 that will be adhered to magnetic that this bridge piece 12 equally also is to be positioned in the collar 7 of rotor 4 towards the face of outside.
The particularity of bridge piece 12 is: it is not configured for solid ring but brings formation with overlap joint, is implemented into to its multilayer the back side of permanent magnet.Lap belt 12 preferable configuration are thin steel band, and are fixed on the rotor 6 through backstop limit 13 and grab 14.Can be mutual bonding ground of each layer of lap belt 12 or power connect ordinatedly.In order to guarantee good magnetic flux, should keep not having the gap as much as possible between each layer.
In order to produce rotor, permanent magnet 10 is presented to the receiving slit between the plastic teeth 11.Lap belt 12 is taken up subsequently, and wherein ground floor and permanent magnet are bonding.Lap belt can be twined on spirality ground, till the gross thickness that reaches expectation.What can expect is that lap belt is applied in the form of a large amount of rings of arranging concentrically with respect to one another, yet has improved manufacturing cost thus.As long as permanent magnet 10 also is not magnetized, magnetization can be implemented in rotor after having fixed each magnet.This also can simplify the location of permanent magnet.
Through the multi-lay winding of bridge piece 12, the magnetic properties of the bridge piece of processing in this way can be adapted to different application scenarios.What can expect is, processes different rotors with same matrix, and these rotors are fit to be applied to the motor of different capacity size.Under stronger magnetic field, need thicker bridge piece, twined more multilayer bridge piece thus.Can in receiving slit, arrange dissimilar permanent magnets equally, so under less power demand, can get back to more cheap material.
Direct drive unit described herein not only can be used for motor for washer also can be used for other application scenarios, particularly when large-sized passive unit should be processed at an easy rate.
Reference numeral
1 stator
2 coils
3 coil carrying devices/active the utmost point
4 rotors
5 bolts
6 rotor disks
7 collars
8 washing tanks
9 housings
10 permanent magnets/passive the utmost point
11 plastic teeth
12 lap belts
13 backstop limits
14 grabs
Claims (14)
1. the direct drive unit of rotating; Have active cell (1) and passive unit (4); Said active cell (1) comprises at least one electric coil winding (2) and a large amount of initiatively utmost point (3); Said passive unit (4) is opened through air gap separation and rotatable with respect to said active cell (1) from said active cell (1); Said passive unit (4) comprises and the opposed a large amount of passive utmost points of the said active utmost point (3) (10) and the bridge piece that is connected to the magnetic of the said passive utmost point, it is characterized in that the lap belt (12) that said bridge piece is implemented by multilayer ground.
2. direct drive unit according to claim 1 is characterized in that, said passive unit (4) comprises a large amount of permanent magnets (10), and said a large amount of permanent magnets (10) constitute the said passive utmost point.
3. direct drive unit according to claim 2 is characterized in that, the ground floor of said lap belt (12) directly is contiguous on the said permanent magnet (10).
4. direct drive unit according to claim 3 is characterized in that, the ground floor of said lap belt (12) is connected with said permanent magnet (10) material with engaging.
5. according to the described direct drive unit of one of claim 2 to 4, it is characterized in that said lap belt (12) is whole or steel plate band manifold, weak magnetic.
6. according to the described direct drive unit of one of claim 2 to 4, it is characterized in that said lap belt (12) spirality ground twines.
7. according to the described direct drive unit of one of claim 2 to 4, it is characterized in that said lap belt (12) is arranged on the said passive unit (4) with the layer of a large amount of arranged concentric.
8. according to the described direct drive unit of one of claim 2 to 4; It is characterized in that; Said passive unit (4) comprises nonmagnetic matrix (6) in addition, and said nonmagnetic matrix (6) is provided for the bearing of said permanent magnet (10) and the induction element that is used for said lap belt (12).
9. direct drive unit according to claim 8 is characterized in that, said nonmagnetic matrix (6) is a vinyl disc, and said vinyl disc has the receiving slit of comb form ground in circumferential distribution, and said permanent magnet (10) is positioned in the said receiving slit.
10. according to the described direct drive unit of one of claim 1 to 4, it is characterized in that said active cell constitutes the stator (1) of said direct drive unit, and said passive unit constitutes the rotor (4) of said direct drive unit.
11. direct drive unit according to claim 10; It is characterized in that; Said rotor (4) is configured to outside rotating device, and said lap belt (12) is arranged to the place, end that is positioned at radially outer of said permanent magnet (10), and said stator (1) is arranged in said rotor (4) inside.
12., it is characterized in that said direct drive unit is constructed to the drive unit of washing machine according to the described direct drive unit of one of claim 1 to 4, said washing machine has the laundry wheel of rotation in washing tank (8).
13. direct drive unit according to claim 12 is characterized in that, the said rotor (4) of said direct drive unit is connected with axle (5), and said axle (5) is used as the supporting of said rotor.
14. direct drive unit according to claim 13 is characterized in that, said stator (1) constitutes the part of said washing tank (8) and/or the part of housing (9).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007017215.1 | 2007-04-12 | ||
| DE102007017215.1A DE102007017215B4 (en) | 2007-04-12 | 2007-04-12 | Rotary direct drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101324020A CN101324020A (en) | 2008-12-17 |
| CN101324020B true CN101324020B (en) | 2012-05-23 |
Family
ID=39744196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810091501XA Expired - Fee Related CN101324020B (en) | 2007-04-12 | 2008-04-11 | Rotatory direct drive device |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101324020B (en) |
| DE (1) | DE102007017215B4 (en) |
| IT (1) | ITMI20080574A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010063514A1 (en) * | 2010-12-20 | 2012-06-21 | Robert Bosch Gmbh | Electric machine with fastening device for magnets |
| DE112011104548T5 (en) * | 2010-12-22 | 2013-09-26 | Fisher & Paykel Appliances Ltd. | Upgraded device, motor or stator |
| DE102016219974B3 (en) | 2016-10-13 | 2018-03-08 | BSH Hausgeräte GmbH | Electric drive motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19514711A1 (en) * | 1995-04-21 | 1996-10-24 | Hagedorn Wolfgang | Permanent magnetic multiple return-path for motors, generators or their combinations |
| CN1639944A (en) * | 2002-07-12 | 2005-07-13 | 新动力有限责任公司 | Electric motor with external rotor |
| EP1653586A2 (en) * | 2004-10-29 | 2006-05-03 | Lg Electronics Inc. | Motor, method for manufacturing field magnet assembly of the same, and washing machine with the same |
| EP1763122A2 (en) * | 2005-09-13 | 2007-03-14 | LG Electronics Inc. | Motor and washing machine including the same |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2642236B1 (en) * | 1989-01-24 | 1996-04-19 | Roulements Soc Nouvelle | MULTIPOLAR MAGNETIC RING |
| US4998052A (en) | 1989-07-28 | 1991-03-05 | General Electric Company | Gearless direct drive switched reluctance motor for laundry application |
| DE4042432C2 (en) * | 1990-12-24 | 1994-05-05 | Orto Holding Ag Luxemburg Luxe | Electronically commutated DC machine |
| EP0909477B1 (en) | 1996-07-02 | 2002-01-02 | Domel Elektromotorji in Gospodinjski Aparati, D.O.O. | Electronically commutated motor for direct drive of washing machine drum |
| JP3361014B2 (en) * | 1996-07-16 | 2003-01-07 | 株式会社東芝 | Rotor manufacturing method |
| DE19963703A1 (en) * | 1999-12-29 | 2001-07-05 | Bsh Bosch Siemens Hausgeraete | Drive device for a washing machine |
| DE10025016B4 (en) | 2000-05-23 | 2006-09-28 | Miele & Cie. Kg | Laundry treatment device with a drive motor in the form of a direct drive |
| JP2003304660A (en) * | 2002-04-10 | 2003-10-24 | Moric Co Ltd | Rotor structure of rotating electrical apparatus |
-
2007
- 2007-04-12 DE DE102007017215.1A patent/DE102007017215B4/en not_active Expired - Fee Related
-
2008
- 2008-04-03 IT IT000574A patent/ITMI20080574A1/en unknown
- 2008-04-11 CN CN200810091501XA patent/CN101324020B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19514711A1 (en) * | 1995-04-21 | 1996-10-24 | Hagedorn Wolfgang | Permanent magnetic multiple return-path for motors, generators or their combinations |
| CN1639944A (en) * | 2002-07-12 | 2005-07-13 | 新动力有限责任公司 | Electric motor with external rotor |
| EP1653586A2 (en) * | 2004-10-29 | 2006-05-03 | Lg Electronics Inc. | Motor, method for manufacturing field magnet assembly of the same, and washing machine with the same |
| EP1763122A2 (en) * | 2005-09-13 | 2007-03-14 | LG Electronics Inc. | Motor and washing machine including the same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007017215B4 (en) | 2017-01-12 |
| CN101324020A (en) | 2008-12-17 |
| ITMI20080574A1 (en) | 2008-10-13 |
| DE102007017215A1 (en) | 2008-10-16 |
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| PB01 | Publication | ||
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| ASS | Succession or assignment of patent right |
Owner name: SCHAEFFLER KG Free format text: FORMER OWNER: FAG KUGELFISCHER AG + CO. OHG Effective date: 20100914 |
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