CN102340225A - Permanent magnetic type rotational electric device - Google Patents
Permanent magnetic type rotational electric device Download PDFInfo
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- CN102340225A CN102340225A CN2010102625748A CN201010262574A CN102340225A CN 102340225 A CN102340225 A CN 102340225A CN 2010102625748 A CN2010102625748 A CN 2010102625748A CN 201010262574 A CN201010262574 A CN 201010262574A CN 102340225 A CN102340225 A CN 102340225A
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention provides a permanent magnetic type rotational electric device capable of preventing short circuit of a magnetic field flux generated by a permanent magnetic when ensuring mechanical strength and capable of high torque and high efficiency. At a stator (2) provided with an armature winding disposed in the internal of a cylindrical iron core and a rotor (6) freely rotatably kept in the internal of the stator, the rotor is made to be in a permanent magnetic type rotational electric device of a magnetic embedding rotor in a part of a rotor iron core (5) formed by embedding of the plurality of permanent magnets (7) into laminated circular disc electromagnetic steel plates at equal intervals, the rotor iron core is formed by lamination of at least a first electromagnetic steel plate (51A) and a second electromagnetic steel plate (51B), the first electromagnetic steel plate is provided with a magnet insertion hole (11) used for insertion of a permanent magnet and a hole (12) for preventing a flux screen of the flux short circuit formed respectively at two ends of the magnet insertion hole, the second electromagnetic steel plate is provided with a q shaft hole near a q shaft except the magnet insertion hole and the holes for a flux screen.
Description
Technical field
The present invention relates to be widely used in the permanent magnet motor that household electrical appliances are used etc., relate in particular to the permanent magnet rotary electric machine of the structure of the raising that possesses the magnetic properties that is suitable for seeking its rotor and mechanical strength.
Background technology
In the past,, turned to purpose, for example, worked out known structure in patent documentation 1 or the patent documentation 2 below with the high-torque high-efficiency of motor about the permanent magnet motor.That is to say; Especially according to Fig. 1 of patent documentation 2; The permanent magnet motor drive mechanism becomes: has with the interval of stipulating, the rotor 10 that is rotatably installed in the inboard of the stator 1 that produces rotating magnetic field, and, on this rotor 10; Along outer peripheral face, imbed a plurality of and the corresponding permanent magnet 11 of its number of poles.And near the magnetic flux short circuit its end in order to prevent to be produced by this permanent magnet is provided with so-called, as to be known as the magnetic flux barrier notch 12a, 12b at the two ends of above-mentioned permanent magnet 11; And, rectangular hole 13 also is set, thus on the q of above-mentioned permanent magnet 11 axle; Through stopping from the magnetic flux of the stator 1 of the d axle that passes through this permanent magnet 11, reduce d axle inductance, and; Through guaranteeing to widen magnetic circuit from the magnetic flux of the stator of the q axle through above-mentioned permanent magnet 11; Increase q axle inductance, therefore, produce the reluctance torque of rotor.
Patent documentation 1: TOHKEMY 2006-101608 communique
Patent documentation 2: TOHKEMY 2000-245087 communique
But, and in the known structure, owing to produce reluctance torque according to above-mentioned prior art; Therefore need set the magnetic circuit of q axle wide as much as possible; But in this case, the magnetic field flux that is produced by the permanent magnet of rotor just can't produce short circuit through stator in this rotor.
Summary of the invention
Therefore, the present invention accomplishes in view of above-mentioned the problems of the prior art point, and its purpose is to propose a kind of structure that is used to prevent the short circuit of the magnetic field flux that produced by permanent magnet.And, for this reason, be necessary to establish the hole on the wide q axle; Make the magnetic circuit between the permanent magnets adjacent magnetic pole narrow to the saturated degree of magnetic flux; But, in this case, owing to produce the problem of the mechanical strength of plate unshakable in one's determination; Its purpose is especially to propose a kind of its mechanical strength of guaranteeing, and the new construction of the short circuit of the magnetic field flux that can prevent to be produced by magnet.
In order to achieve the above object; A kind of permanent magnet rotary electric machine is provided in the present invention; At first; Freely remain on the inner rotor of said stator with rotation possessing the stator that armature winding is located at the inside of iron core cylindraceous; And make in the permanent magnet rotary electric machine of this rotor for the magnet baried type rotor of a part of a plurality of permanent magnets equally spaced being imbedded the rotor core that range upon range of discoid electromagnetic steel plate forms; Range upon range of at least first electromagnetic steel plate of above-mentioned rotor core and second electromagnetic steel plate and form; This first electromagnetic steel plate be formed with the magnet insertion holes that is used to insert above-mentioned permanent magnet and form at the two ends of this magnet insertion holes, be used to prevent that the magnetic flux barrier of magnetic flux short circuit from use the hole, this second electromagnetic steel plate except above-mentioned magnet insertion holes and above-mentioned magnetic flux barrier with the hole, near the formation q axis hole q axle also.
In addition, in the present invention, in the permanent magnet rotary electric machine of above-mentioned record, preferred above-mentioned rotor core to major general's electromagnetic steel plate range upon range of at its two ends is as above-mentioned first electromagnetic steel plate.In addition, preferred above-mentioned rotor core is laminated in outside the electromagnetic steel plate at above-mentioned two ends, at other also range upon range of above-mentioned first electromagnetic steel plate of range upon range of electromagnetic steel plate.And, preferably at the inside potting resin that is formed at the above-mentioned q axis hole on above-mentioned second electromagnetic steel plate that constitutes above-mentioned rotor core.
In addition; In the present invention; In the permanent magnet rotary electric machine of above-mentioned record, above-mentioned second electromagnetic steel plate preferably constitutes, through the above-mentioned q axis hole of above-mentioned formation; The magnetic circuit of its outer circumferential side and be formed at this q axis hole and above-mentioned magnetic flux barrier fully narrow saturated with the magnetic circuit between the hole to the magnetic flux that makes short circuit between the adjacent pole of above-mentioned a plurality of permanent magnets; And preferably all sides deduct the wall thickness of this magnet with radius from concentric circles d and the concentric circles e of the radius that obtains compares and is positioned at the outside in it, and this concentric circles d is the concentric circles with above-mentioned permanent magnet inscribe; Perhaps; The above-mentioned q axis hole that is formed at above-mentioned second electromagnetic steel plate is divided into a plurality of by the magnetic circuit radially of the width with magnetic unsaturation degree, perhaps, the above-mentioned q axis hole and the above-mentioned magnetic flux barrier that forms in abutting connection with its both sides that are formed on above-mentioned second electromagnetic steel plate are connected also passable with arbitrary side in hole.
In above-mentioned permanent magnet rotary electric machine of the present invention; In the rotor core of this rotor; Because when guaranteeing its mechanical strength; Can prevent short circuit, but therefore bring into play the excellent effect of the permanent magnet rotary electric machine that high-torque high-efficiencyization can be provided by the magnetic field flux of permanent magnet generation.
Description of drawings
Fig. 1 is the integrally-built cutaway view radially of explanation permanent magnet motor of the present invention.
Fig. 2 is the overall perspective view of detailed structure of the rotor core of the above-mentioned permanent magnet motor of expression.
Fig. 3 is that open cube display is amplified in the part of the detailed internal structure of the expression iron plate that constitutes above-mentioned rotor core.
Fig. 4 is the local amplification plan view that expression constitutes the detailed structure of second iron plate in the iron plate of above-mentioned rotor core.
Fig. 5 is the A-A cutaway view of Fig. 2 of the stepped construction of the expression iron plate that constitutes above-mentioned rotor core.
Fig. 6 is the local amplification plan view of detailed structure of second iron plate of the rotor core of the expression permanent magnet motor that constitutes other embodiment of the present invention.
Fig. 7 is the local amplification plan view of detailed structure of second iron plate of the rotor core of the expression permanent magnet motor that constitutes another other embodiment of the present invention.
Embodiment
Below, be elaborated with reference to the permanent magnet rotary electric machine of accompanying drawing to one embodiment of the invention.
At first; The cross section structure radially (cross section vertical) of the permanent magnet rotary electric machine of accompanying drawing 1 expression one embodiment of the invention with the rotating shaft direction; In the figure; Permanent magnet motor 1 possesses the roughly stator 2 of outward appearance cylindraceous, and have equally columnar rotor 6 with and the inner peripheral surface of stator between predetermined distance is arranged and dispose and be rotatably mounted in its inside.
As shown in scheming obviously, for example, on the iron core of the stator 2 of range upon range of a plurality of electromagnetic steel plates that form the shape of predesignating, being provided with a plurality of openings 3, portion executes the armature winding at this not shown concentrated coiling within it, thus, produces rotating magnetic field.
On the other hand, rotor 6 possesses rotor core 5 and rotating shaft 8, in addition, in rotor core 5, equally spaced is embedded in the permanent magnet 7 (being 4 in this example) of the quantity suitable with its number of poles along periphery.And this rotor core 5 is connected with rotating shaft 8, through this rotating shaft 8; Keep the predetermined distance between the inner peripheral surface of outer peripheral face and stator 4 of this rotor core 5; And rotatably install with respect to said stator 4, thus, this revolving force is transmitted to the outside through this rotating shaft 8.In addition, as shown in scheming obviously, above-mentioned permanent magnet 7 is respectively to the radially generation magnetic field of the iron core (rotor core 5) that constitutes rotor 6, and permanent magnets adjacent 7 is configured to polarity differ from one another (antipolarity).In addition, the magnetic flux barrier (Off ラ Star Network ス バ リ ア) of explanation below 12 expressions of the symbol among the figure.
Below, the detailed structure of the rotor core 5 of the above-mentioned permanent magnet rotary electric machine of accompanying drawing 2 expressions.Shown in this figure is obvious; Rotor core 5 is identical with said stator 4, range upon range ofly forms a plurality of electromagnetic steel plates (iron plate) 51 of the shape of predesignating and constitutes, and each steel plate 51 for example forms circular the time through stamping-out processing etc.; Along its periphery; Be formed with the OBL magnet insertion holes 11 that is used to insert above-mentioned permanent magnet 7, and, be formed with the emptying aperture 12 that becomes above-mentioned magnetic flux barrier at its both ends, from the position that this magnet insertion holes 11 departs from a little laterally.
The more detailed internal structure of the above-mentioned rotor core 5 of accompanying drawing 3 expression, promptly, expression constitutes the part of many iron plates 51 of this rotor core 5.Promptly, as shown in the figure, many iron plates that constitute this rotor core 5 are categorized as the iron plate 51A and the 51B of two different kinds respectively.At first, on the first iron plate 51A, be formed with in the above-mentioned magnet insertion holes 11,, be formed with the emptying aperture 12 that becomes above-mentioned magnetic flux barrier at its both ends.
On the other hand, on the second iron plate 51B, at first, when being formed with emptying aperture that above-mentioned magnet insertion holes 11 and the magnetic flux barrier that is formed on the first iron plate 51A use 12,, near the q axle, be provided with q axis hole 13 also along its periphery.
In addition, the detailed structure of this q axis hole 13 is formed at the width d of the magnetic circuit of its outer circumferential side shown in accompanying drawing 4
OAnd be formed at and emptying aperture 12 that above-mentioned magnetic flux barrier is used between the width d of magnetic circuit
BFully narrow saturated to the magnetic flux that makes short circuit between the magnetic pole of permanent magnets adjacent, and, interior all sides of preferred q axis hole 13 and wall thickness (the width d of=magnet insertion holes 11 that deducts this magnet from the radius of concentric circles d
M) and the concentric circles e of the radius that obtains compares and is positioned at the outside, this concentric circles d is the concentric circles with above-mentioned permanent magnet inscribe.
And in the present invention, the iron core of above-mentioned two kinds through range upon range of regulation number forms above-mentioned rotor core 5 with iron plate 51A, 51B.For example, accompanying drawing 5 these examples of expression.In addition, the cutaway view shown in these figure is to be illustrated in the above-mentioned rotor core shown in Figure 25, dissects the cutaway view of the part that is formed with above-mentioned q axis hole 13 along the A-A cross section of figure.
At first, Fig. 5 (A) expression alternately iron core of (at a distance from one) range upon range of above-mentioned two kinds forms the example of rotor core 5 with iron plate 51A, 51B, and Fig. 5 (B) representes the example with respect to one first range upon range of two the second iron plate 51B of iron plate 51A.In addition, under this situation,, be preferably set to the above-mentioned iron plate 51A of configuration as the iron plate of the two ends that are positioned at rotor core 5 (upper and lower side of figure).In addition, the iron plate that Fig. 5 (C) expression will be positioned at the two ends (upper and lower side of figure) of rotor core 5 is made as the first iron plate 51A, and, use the example of the second iron plate 51B as therebetween iron plate.
Can know also that according to above explanation in permanent magnet rotary electric machine of the present invention especially its rotor core 5, the emptying aperture 12 that the magnetic flux barrier is used becomes the magnetic barrier, suppress magnetic flux that permanent magnet 7 produces around the end of going into this permanent magnet 7 and short circuit.In addition, as stated, the iron core that constitutes rotor core 5 in iron plate 51B, is provided with above-mentioned q axis hole 13 with among iron plate 51A, the 51B near the q axle.Because this q axis hole 13 makes magnetic flux that permanent magnet 7 produces to the narrow degree to magnetic saturation of the magnetic circuit of the different poles circulation of permanent magnets adjacent 7 (width), therefore suppressing permanent magnets adjacent 7 produces magnet short-cut path each other.Promptly, so, can eliminate the magnetic field flux that produces by permanent magnet not through the short circuit (preventing the magnet short-cut path effect) of stator ground in this rotor, thereby, can realize that the high torque (HT) of permanent magnet motor, high efficiency change into.
In addition, as stated, in order to produce reluctance torque, can make the magnetic circuit of above-mentioned q axle narrow as much as possible, promptly preferred area with above-mentioned q axis hole 13 is set at wide as much as possible.But, at this moment, owing to form this q axis hole 13, cause near the especially iron plate intensity reduction the formation position of this q axis hole 13 of the intensity with iron plate 51B unshakable in one's determination.Therefore; In the present invention, shown in above-mentioned Fig. 5 (A) or Fig. 5 (B), not to form above-mentioned q axis hole 13 on iron plate 51 at whole iron cores; And just its part second unshakable in one's determination with iron plate 51B on this q axle 13 of formation, guarantee rotor core 5 necessary mechanical strength thus.
Perhaps; Shown in above-mentioned Fig. 5 (C); The iron plate of (upper and lower side of figure) is used under the situation of the second iron plate 51B as the first iron plate 51A and therebetween iron plate at the two ends that will be positioned at rotor core 5; Preferably, for example fill adhesive, indurative resin etc. in the inside of the above-mentioned q axis hole 13 that forms.Thus,, when can guarantee the rotor core necessary mechanical strength, the joint with 51 on iron plate unshakable in one's determination can be strengthened, the mechanical strength of rotor core can be further strengthened through the resin of filling in the inside of this q axis hole 13.In addition, be suitable for too in the structure shown in above-mentioned Fig. 5 (A) or Fig. 5 (B) even carry out the filling of resin to these q axis hole 13 inside.
According to the permanent magnet rotary electric machine in above one embodiment of the invention that are described in detail; Especially the iron core that constitutes its rotor core with iron plate 51 in; Since the magnetic field flux that produces by permanent magnet must be through being easy to magnetic saturation under the situation of magnetic field magnet short-cut path magnetic circuit, promptly because of this q axis hole 13 and the narrow magnetic circuit of stenosis; Therefore can suppress the magnet short-cut path in the rotor, promptly can further improve and prevent the magnet short-cut path effect.In addition, at this moment, be not only the second iron plate 51B of weak strength,, guarantee the mechanical strength of rotor through adding the first strong iron plate 51A of intensity and alternately laminated.In addition, comprise by the mechanical strength of the second range upon range of iron core, even, therefore, when suppressing magnet short-cut path, can have the mechanical strength of guaranteeing rotor concurrently through also guaranteeing at these q axis hole 13 potting resins with the rotor of iron plate 51B.
In addition, especially about being formed at second other shapes with the above-mentioned q axis hole 13 on the iron plate 51B unshakable in one's determination that constitute rotor, carry out following explanation about other embodiment of the present invention with reference to accompanying drawing 6 and Fig. 7.
At first; Be formed at iron core shown in Figure 6 with the q axis hole 13 on the iron plate 51B, also can be clear from figure, with above-mentioned q axis hole shown in Figure 4 13 separated into two parts 13-1,13-2; Through the magnetic circuit 13-3 of the unsaturated width of magnetic flux is set betwixt, prevent the decline of mechanical strength.That is, according to the q axis hole 13 of this shape, and the magnetic circuit that forms between with hole 12 and this q axis hole 13 of the magnetic flux barrier of both sides adjacency become half thely, therefore can further improve by iron core and prevent the magnet short-cut path effect with what iron plate 51B played.
In addition, in Fig. 7, be breaking at the side in the pair of magnetic circuits that forms between the emptying aperture 12 that the magnetic flux barrier of this q axis hole 13 and its both sides uses, that is, a side emptying aperture 12 ' be connected with above-mentioned q axis hole 13, thus, can strengthen preventing the magnet short-cut path effect.In addition, even in this case, also preferably within it portion fill for example adhesive, indurative resin etc., further guarantee mechanical strength.
Claims (7)
1. permanent magnet rotary electric machine,
Have: armature winding is located at the stator of the inside of iron core cylindraceous, and
Rotation remains on the rotor of the inside of said stator freely,
Make this rotor for the magnet baried type rotor in the part of a plurality of permanent magnets equally spaced being imbedded the rotor core that range upon range of discoid electromagnetic steel plate forms, it is characterized in that,
Range upon range of at least first electromagnetic steel plate of above-mentioned rotor core and second electromagnetic steel plate and form; This first electromagnetic steel plate be formed with the magnet insertion holes that is used to insert above-mentioned permanent magnet and form at the two ends of this magnet insertion holes, be used to prevent that the magnetic flux barrier of magnetic flux short circuit from using the hole; This second electromagnetic steel plate except above-mentioned magnet insertion holes and above-mentioned magnetic flux barrier with the hole, also near the q axle, form the q axis hole.
2. require 1 described permanent magnet rotary electric machine according to aforesaid right, it is characterized in that,
Above-mentioned rotor core to major general's electromagnetic steel plate range upon range of at its two ends is as above-mentioned first electromagnetic steel plate.
3. require 2 described permanent magnet rotary electric machines according to aforesaid right, it is characterized in that,
Above-mentioned rotor core except above-mentioned the range upon range of electromagnetic steel plate in two ends, also range upon range of above-mentioned first electromagnetic steel plate on the part of other range upon range of electromagnetic steel plates.
4. require 1～3 each described permanent magnet rotary electric machine according to aforesaid right, it is characterized in that,
At the inside potting resin that is formed at the above-mentioned q axis hole on above-mentioned second electromagnetic steel plate that constitutes above-mentioned rotor core.
5. require 1 described permanent magnet rotary electric machine according to aforesaid right, it is characterized in that,
Above-mentioned second electromagnetic steel plate constitutes; Above-mentioned q axis hole through above-mentioned formation; The magnetic circuit of the outer circumferential side of q axis hole and be formed at this q axis hole and above-mentioned magnetic flux barrier narrow fully saturated with the magnetic circuit between the hole to the magnetic flux that makes short circuit between the adjacent magnetic pole of above-mentioned a plurality of permanent magnets; And interior all sides of q axis hole deduct the wall thickness of magnet with the radius from concentric circles d and the concentric circles e of the radius that obtains compares and is positioned at the outside, and this concentric circles d is the concentric circles with above-mentioned permanent magnet inscribe.
6. require 1 described permanent magnet rotary electric machine according to aforesaid right, it is characterized in that,
The above-mentioned q axis hole that is formed on above-mentioned second electromagnetic steel plate is divided into a plurality of by the magnetic circuit radially of the width with magnetic unsaturation degree.
7. require 1 described permanent magnet rotary electric machine according to aforesaid right, it is characterized in that,
Be formed on above-mentioned second electromagnetic steel plate above-mentioned q axis hole with in abutting connection be formed at its both sides above-mentioned magnetic flux barrier be connected with arbitrary side in hole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010160289A JP2012023876A (en) | 2010-07-15 | 2010-07-15 | Permanent magnet rotary electric machine |
| JP2010-160289 | 2010-07-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102340225A true CN102340225A (en) | 2012-02-01 |
Family
ID=45515787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102625748A Pending CN102340225A (en) | 2010-07-15 | 2010-08-24 | Permanent magnetic type rotational electric device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2012023876A (en) |
| KR (1) | KR101134268B1 (en) |
| CN (1) | CN102340225A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104620472A (en) * | 2012-09-07 | 2015-05-13 | 株式会社明电舍 | Rotor of permanent magnet motor |
| WO2023000474A1 (en) * | 2021-07-20 | 2023-01-26 | 广东威灵电机制造有限公司 | Rotor structure, electric motor structure, and clothing treating device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6110151B2 (en) * | 2013-02-07 | 2017-04-05 | 本田技研工業株式会社 | Rotating electrical machine rotor |
| KR20210011954A (en) | 2018-06-25 | 2021-02-02 | 미쓰비시덴키 가부시키가이샤 | Rotors, electric motors, blowers and air conditioners |
| KR102509568B1 (en) * | 2020-11-26 | 2023-03-10 | 한양대학교 산학협력단 | Rotor of line start synchronous reluctacne motor with q-axis slot structure for improving power characteristic |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000245087A (en) * | 1999-02-24 | 2000-09-08 | Fujitsu General Ltd | Permanent magnet motor |
| US20020047434A1 (en) * | 2000-08-29 | 2002-04-25 | Haruo Koharagi | Permanent magnet rotating electric machine |
| CN101313450A (en) * | 2005-11-21 | 2008-11-26 | 罗伯特·博世有限公司 | Arrangement of rotor laminates of a permanently excited electrical machine |
| CN101421905A (en) * | 2006-04-24 | 2009-04-29 | 富士通将军股份有限公司 | Buried magnet rotor, motor using this rotor, and compressor using this motor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000116042A (en) | 1998-09-30 | 2000-04-21 | Toshiba Corp | Permanent magnet motor |
| JP2004096978A (en) | 2002-09-04 | 2004-03-25 | Daikin Ind Ltd | Permanent magnet embedded motor and rotary compressor |
| JP4599088B2 (en) | 2004-05-13 | 2010-12-15 | 東芝コンシューマエレクトロニクス・ホールディングス株式会社 | Rotor for rotating electrical machine and method for manufacturing the same |
| KR101478838B1 (en) * | 2008-01-22 | 2015-01-05 | 엘지전자 주식회사 | Fan motor, BLDC motor and rotator for the same |
-
2010
- 2010-07-15 JP JP2010160289A patent/JP2012023876A/en not_active Withdrawn
- 2010-08-24 KR KR1020100081709A patent/KR101134268B1/en not_active IP Right Cessation
- 2010-08-24 CN CN2010102625748A patent/CN102340225A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000245087A (en) * | 1999-02-24 | 2000-09-08 | Fujitsu General Ltd | Permanent magnet motor |
| US20020047434A1 (en) * | 2000-08-29 | 2002-04-25 | Haruo Koharagi | Permanent magnet rotating electric machine |
| CN101313450A (en) * | 2005-11-21 | 2008-11-26 | 罗伯特·博世有限公司 | Arrangement of rotor laminates of a permanently excited electrical machine |
| CN101421905A (en) * | 2006-04-24 | 2009-04-29 | 富士通将军股份有限公司 | Buried magnet rotor, motor using this rotor, and compressor using this motor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104620472A (en) * | 2012-09-07 | 2015-05-13 | 株式会社明电舍 | Rotor of permanent magnet motor |
| CN104620472B (en) * | 2012-09-07 | 2017-06-16 | 株式会社明电舍 | The rotor of permanent magnet motor |
| WO2023000474A1 (en) * | 2021-07-20 | 2023-01-26 | 广东威灵电机制造有限公司 | Rotor structure, electric motor structure, and clothing treating device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20120007940A (en) | 2012-01-25 |
| JP2012023876A (en) | 2012-02-02 |
| KR101134268B1 (en) | 2012-04-12 |
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Application publication date: 20120201 |