CN107591921A - Rotor assembly and motor - Google Patents
Rotor assembly and motor Download PDFInfo
- Publication number
- CN107591921A CN107591921A CN201711035577.6A CN201711035577A CN107591921A CN 107591921 A CN107591921 A CN 107591921A CN 201711035577 A CN201711035577 A CN 201711035577A CN 107591921 A CN107591921 A CN 107591921A
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- Prior art keywords
- rotor assembly
- magnetic
- iron core
- permanent magnets
- core
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- 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.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000002955 isolation Methods 0.000 claims description 31
- 238000007885 magnetic separation Methods 0.000 claims description 4
- 230000004907 flux Effects 0.000 abstract description 17
- 230000005389 magnetism Effects 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a kind of rotor assembly and motor, the rotor assembly includes iron core and multiple permanent magnets, and iron core has centre bore, and iron core is provided with circumferentially distributed multiple magnet slots, is provided with iron core around centre bore every magnetism hole.Multiple permanent magnets are respectively fitting into multiple magnet slots, and the quantity of permanent magnet is equal to the number of pole-pairs of rotor assembly；Wherein, multiple permanent magnets are the main pole of rotor assembly, in iron core in the circumferential the part positioned at two adjacent permanent magnets between for rotor assembly secondary magnetic pole.Rotor assembly according to embodiments of the present invention, due to the main pole that multiple permanent magnets are rotor assembly, the part between two adjacent permanent magnets is the secondary magnetic pole of rotor assembly in the circumferential in iron core, it dramatically saves on permanent-magnet material, the production cost of rotor assembly is reduced, and due to being provided with iron core around centre bore every magnetism hole, reduces leakage magnetic flux of the main pole by rotating shaft, the magnetic of rotating shaft is limited, ensure that the operating efficiency of rotor assembly.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a rotor assembly and a motor.
Background
The cost of the ndfeb permanent magnet motor is often an obstacle to the wide application of the motor, and how to effectively save permanent magnet materials and limit the leakage flux in the axial space of the motor (the existence of unidirectional leakage flux in the rotating shaft can cause the rotating shaft to have magnetism) becomes a problem that designers of the permanent magnet motor must think about.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a rotor assembly which can effectively save permanent magnet materials and reduce magnetic leakage flux in the axial space of a motor.
The invention also aims to provide a motor with the rotor assembly.
According to an embodiment of the present invention, a rotor assembly includes: the magnetic separation iron core is provided with a central hole, a plurality of magnetic grooves distributed along the circumferential direction are formed in the iron core, and magnetic separation air holes are formed in the iron core and surround the central hole; the permanent magnets are respectively matched in the magnet grooves, and the number of the permanent magnets is equal to the number of pole pairs of the rotor assembly; the permanent magnets are main magnetic poles of the rotor assembly, and the part, located between every two adjacent permanent magnets in the circumferential direction, of the iron core is an auxiliary magnetic pole of the rotor assembly.
According to the rotor assembly provided by the embodiment of the invention, the plurality of permanent magnets are main magnetic poles of the rotor assembly, and the part of the iron core, which is positioned between two adjacent permanent magnets in the circumferential direction, is an auxiliary magnetic pole of the rotor assembly, so that permanent magnet materials are greatly saved, and the production cost of the rotor assembly is reduced. In addition, because the iron core is provided with the magnetic isolation air holes around the central hole, the magnetic leakage flux of the main magnetic pole passing through the rotating shaft is reduced, the magnetism of the rotating shaft is limited, and the working efficiency of the rotor assembly is ensured.
In some embodiments, the magnetic shielding air hole is a plurality of spaced apart air holes.
Specifically, the part of the iron core, which is located between two adjacent magnetism isolating air holes in the circumferential direction, is a magnetism isolating bridge, and the circumferential width of the magnetism isolating bridge is 0.5mm-4 mm.
In some embodiments, a central angle of a portion of the iron core corresponding to the main magnetic pole is larger than a central angle of a portion of the iron core corresponding to the sub magnetic pole.
In some embodiments, the iron core is provided with a magnetic isolation air gap at a portion located between the main magnetic pole and the auxiliary magnetic pole in the circumferential direction.
Specifically, the radial dimension of the magnetic isolation air gap is smaller than the radial dimension of the magnetic isolation air hole.
Specifically, the magnetic isolation air gap is open outward in the radial direction of the core.
In some embodiments, the magnetic poles of both ends of each permanent magnet in the radial direction of the iron core are opposite, and the magnetic poles of the inner ends of the plurality of permanent magnets in the radial direction of the iron core are the same.
In some embodiments, a plurality of the magnet slots are open outwardly in a radial direction of the core.
According to the motor of the embodiment of the invention, the motor comprises the rotor assembly.
The motor provided by the embodiment of the invention can effectively save permanent magnet materials and reduce the leakage flux in the axial space of the motor.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of the overall structure of a rotor assembly according to an embodiment of the present invention.
Fig. 2 is a schematic view showing the overall structure of a rotor assembly according to another embodiment of the present invention.
Fig. 3 is a schematic diagram of a one-way leakage flux path of the rotating shaft.
Reference numerals:
a rotor assembly 1,
Iron core 10, magnet slot 110, auxiliary magnetic pole 120, magnetic isolation air hole 130, magnetic isolation bridge 140, magnetic isolation air gap 150, central hole 160,
Permanent magnet 20, main pole 210.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A rotor assembly 1 according to an embodiment of the present invention is described below with reference to fig. 1 to 3.
As shown in fig. 1 to 2, a rotor assembly 1 according to an embodiment of the present invention includes a core 10 and a plurality of permanent magnets 20. The iron core 10 has a central hole 160, a plurality of magnet slots 110 distributed along the circumferential direction are arranged on the iron core 10, and a magnetic isolating air hole 130 is arranged on the iron core 10 around the central hole 160. The plurality of permanent magnets 20 are fitted in the plurality of magnet grooves 110, respectively, and the number of the permanent magnets 20 is equal to the number of pole pairs of the rotor assembly 1. The plurality of permanent magnets 20 are main magnetic poles 210 of the rotor assembly 1, and the portion of the iron core 10 located between two adjacent permanent magnets 20 in the circumferential direction is a sub magnetic pole 120 of the rotor assembly 1.
It can be understood that, in most of the existing ndfeb permanent magnet motor rotors, the number of the permanent magnets 20 is equal to twice the number of pole pairs of the rotor assembly 1, whereas in the rotor assembly 1 according to the embodiment of the present invention, since the plurality of permanent magnets 20 are the main poles 210 of the rotor assembly 1, the portion of the iron core 10 located between two adjacent permanent magnets 20 in the circumferential direction is the auxiliary poles 120 of the rotor assembly 1, so that the number of the permanent magnets 20 is equal to the number of pole pairs of the rotor assembly 1. Compared with the existing neodymium iron boron permanent magnet motor rotor, the number of the permanent magnets 20 of the rotor assembly 1 is reduced by half, so that permanent magnet materials are greatly saved, and the production cost of the rotor assembly 1 is reduced. As shown in fig. 3, because of the distribution of the permanent magnets, the ndfeb permanent magnet motor is prone to generate magnetic flux leakage in the rotating shaft, and the rotor assembly 1 according to the embodiment of the present invention has the magnetic isolation air holes 130 around the central hole 160 of the rotating shaft, the magnetic isolation air holes 130 can well reduce the magnetic flux leakage of the main pole 210 through the rotating shaft, limit the magnetism of the rotating shaft, and ensure the working efficiency of the rotor assembly 1.
According to the rotor assembly 1 of the embodiment of the present invention, since the plurality of permanent magnets 20 are the main magnetic poles 210 of the rotor assembly 1, and the portion of the iron core 10 located between two adjacent permanent magnets 20 in the circumferential direction is the auxiliary magnetic pole 120 of the rotor assembly 1, permanent magnet materials are greatly saved, and the production cost of the rotor assembly 1 is reduced. In addition, since the magnetic isolation air holes 130 are formed around the central hole 160 on the iron core 10, the leakage flux of the main pole 210 through the rotating shaft is reduced, the magnetism of the rotating shaft is limited, and the working efficiency of the rotor assembly 1 is ensured.
In some embodiments, the magnetic shield air hole 130 is a plurality disposed at intervals. This improves the additional magnetic shielding effect of the magnetic shielding air holes 130, and further reduces the leakage flux of the main pole 210 through the rotation shaft.
Specifically, as shown in fig. 1-2, the portion of the core 10 located between two adjacent magnetic shielding air holes 130 in the circumferential direction is a magnetic shielding bridge 140, and the circumferential width L0 of the magnetic shielding bridge 140 is 0.5mm to 4 mm. It can be understood that, since the magnetism isolating air holes 130 are disposed around the central hole 160, if there is no magnetism isolating bridge 140 between two adjacent magnetism isolating air holes 130, an overhanging section may occur at the magnetism isolating air holes 130 after the assembly of the rotating shaft is completed, which reduces the stability of the rotating shaft and is not favorable for the normal operation of the rotor assembly 1. Therefore, the magnetic isolation bridges 140 are formed at the portions of the iron core 10 axially between the adjacent magnetic isolation air holes 130, and the existence of the magnetic isolation bridges 140 can improve the stability of the rotating shaft. It should be noted that too wide of the magnetic isolation bridge 140 may cause the circumferential size of the magnetic isolation air hole 130 to be smaller, the magnetic isolation effect is not good, and too narrow of the magnetic isolation bridge 140 may cause the stability of the rotating shaft to be reduced, so that the circumferential width L0 of the magnetic isolation bridge 140 is controlled within the range of 0.5mm to 4mm, which may not only ensure a good magnetic isolation effect, but also ensure the stability of the rotating shaft.
In some embodiments, as shown in fig. 1-2, the magnetic shield air holes 130 are two and formed in a fan shape. Of course, the magnetic shielding air hole 130 is used for shielding the leakage flux of the main magnetic pole 210 passing through the rotating shaft, and therefore, the shape of the magnetic shielding air hole 130 is not limited to a fan shape, and may be other shapes, such as a square shape, an oblong shape, and the like.
It should be noted that α shown in fig. 1 refers to the central angle of the corresponding portion of the iron core 10 corresponding to the main pole 210, that is, the central angle of the corresponding portion of the iron core 10 corresponding to the main pole 210 refers to the maximum angle between the center of the iron core 10 and the connection line of the end points of the two ends of the main pole 210.
In some embodiments, as shown in fig. 2, the iron core 10 is provided with a magnetic isolation air gap 150 at a portion between the main pole 210 and the sub-pole 120 in the circumferential direction. Thereby, it is possible to prevent the occurrence of a phenomenon in which the main pole 210 and the sub-pole 120 communicate with each other to increase the leakage magnetic flux of the rotor assembly 1.
Specifically, as shown in FIG. 2, the radial dimension L2 of the magnetic shield air gap 150 is less than the radial dimension L1 of the magnetic shield air holes 130. Of course, the user can adjust the sizes of the magnetic isolation air gap 150 and the magnetic isolation air hole 130 according to actual needs, that is, in some embodiments, the radial dimension L2 of the magnetic isolation air gap 150 is equal to the radial dimension L1 of the magnetic isolation air hole 130. In some embodiments, the radial dimension L2 of the magnetic shield air gap 150 is greater than the radial dimension L1 of the magnetic shield air holes 130.
Specifically, the magnetic isolation air gap 150 is open outward in the radial direction of the core 10. This can further reduce the leakage magnetic flux of the rotor assembly 1, and improve the operating efficiency of the rotor assembly 1.
In some embodiments, the magnetic poles of both ends of each permanent magnet 20 in the radial direction of the core 10 are opposite, and the magnetic poles of the inner ends of the plurality of permanent magnets 20 in the radial direction of the core 10 are all the same. Due to the action of like magnetic poles repelling each other, the main magnetic flux of the permanent magnets 20 can be enhanced, and the working efficiency of the rotor assembly 1 is improved.
In some embodiments, as shown in fig. 2, a plurality of magnet slots 110 are open outwardly in the radial direction of the core 10. Thereby facilitating the installation of the permanent magnet 20. Of course, the shape of the magnet slot 110 may have other forms, for example, as shown in fig. 1, a plurality of magnet slots 110 are provided to be closed on the circumferential surface of the iron core 10.
A rotor assembly 1 according to two embodiments of the present invention will now be described with reference to fig. 1-2.
Example 1:
as shown in fig. 1, the rotor assembly 1 in this example comprises a core 10 and two permanent magnets 20. The iron core 10 has a central hole 160, two magnet slots 110 distributed along the circumferential direction are arranged on the iron core 10, the two magnet slots 110 are designed to be closed in the radial direction of the iron core 10, and a magnetic isolating air hole 130 is arranged on the iron core 10 around the central hole 160. Two permanent magnets 20 are fitted in the two magnet slots 110, respectively, and the number of the permanent magnets 20 is equal to the number of pole pairs of the rotor assembly 1. The two permanent magnets 20 are main magnetic poles 210 of the rotor assembly 1, and the portion of the iron core 10 located between the two adjacent permanent magnets 20 in the circumferential direction is a sub magnetic pole 120 of the rotor assembly 1. In this example, the number of the main poles 210 is 2, the number of the sub-poles 120 is 2, and the number of the motor pole pairs is equal to 2.
As shown in fig. 1, the magnetic shielding air holes 130 are two and spaced apart, the magnetic shielding air holes 130 are formed in two fan shapes concentric with the central hole 160, the magnetic shielding bridge 140 is formed between the two magnetic shielding air holes 130 of the iron core 10, and the circumferential width L0 of the magnetic shielding bridge 140 is 0.5mm to 4 mm.
Example 2:
as shown in fig. 2, the rotor assembly 1 in this example includes a core 10 and two permanent magnets 20. The iron core 10 has a central hole 160, two magnet slots 110 distributed along the circumferential direction are arranged on the iron core 10, the two magnet slots 110 are arranged to be open outwards in the radial direction of the iron core 10, and a magnetic isolation air hole 130 is arranged on the iron core 10 around the central hole 160. Two permanent magnets 20 are fitted in the plurality of magnet slots 110, respectively, and the number of the permanent magnets 20 is equal to the number of pole pairs of the rotor assembly 1. The two permanent magnets 20 are main magnetic poles 210 of the rotor assembly 1, and the portion of the iron core 10 located between the two adjacent permanent magnets 20 in the circumferential direction is a sub magnetic pole 120 of the rotor assembly 1. In this example, the number of the main poles 210 is 2, the number of the sub-poles 120 is 2, and the number of the motor pole pairs is equal to 2.
As shown in fig. 2, the magnetic shielding air holes 130 are two and spaced apart, the magnetic shielding air holes 130 are formed in two fan shapes concentric with the central hole 160, the magnetic shielding bridge 140 is formed between the two magnetic shielding air holes 130 of the iron core 10, and the circumferential width L0 of the magnetic shielding bridge 140 is 0.5mm to 4 mm.
As shown in fig. 2, the iron core 10 is provided with a magnetic isolation air gap 150 at a portion between the main pole 210 and the sub-pole 120 in the circumferential direction. The radial dimension L2 of the magnetic shield air gap 150 is less than the radial dimension L1 of the magnetic shield air holes 130.
The rotor assemblies 1 of examples 1 and 2 each have the following advantages:
(1) the number of the permanent magnets 20 is half of that of the permanent magnets 20 of the conventional permanent magnet motor, so that permanent magnet materials are saved;
(2) the magnetic isolation air hole 130 is arranged to reduce the leakage flux in a single direction in the rotating shaft.
According to the motor of the embodiment of the invention, the motor comprises the rotor assembly 1.
The motor provided by the embodiment of the invention can effectively save permanent magnet materials and reduce the leakage flux in the axial space of the motor.
Other constructions of electric machines according to embodiments of the invention, such as stator assemblies and motor housings, and the like, and operation are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A rotor assembly, comprising:
the magnetic separation iron core is provided with a central hole, a plurality of magnetic grooves distributed along the circumferential direction are formed in the iron core, and magnetic separation air holes are formed in the iron core and surround the central hole;
the permanent magnets are respectively matched in the magnet grooves, and the number of the permanent magnets is equal to the number of pole pairs of the rotor assembly; wherein,
the permanent magnets are main magnetic poles of the rotor assembly, and the part, located between every two adjacent permanent magnets in the circumferential direction, of the iron core is an auxiliary magnetic pole of the rotor assembly.
2. The rotor assembly of claim 1 wherein the magnetic shielding air holes are a plurality of spaced apart air holes.
3. The rotor assembly according to claim 2, wherein the part of the iron core, which is circumferentially positioned between two adjacent magnetic shielding air holes, is a magnetic shielding bridge, and the circumferential width of the magnetic shielding bridge is 0.5mm-4 mm.
4. The rotor assembly of claim 1 wherein the core has a central angle defined by the portion of the core corresponding to the primary pole that is greater than a central angle defined by the portion of the core corresponding to the secondary pole.
5. The rotor assembly of claim 1 wherein the core is provided with a magnetic isolation air gap in a portion circumferentially between the primary pole and the secondary pole.
6. The rotor assembly of claim 5 wherein the radial dimension of the magnetic-isolating air gap is less than the radial dimension of the magnetic-isolating air hole.
7. The rotor assembly of claim 5 wherein the magnetic-isolation air gap opens outwardly in a radial direction of the core.
8. The rotor assembly of claim 1 wherein the poles of both ends of each permanent magnet in the radial direction of the core are opposite, and the poles of the inner ends of the plurality of permanent magnets in the radial direction of the core are the same.
9. The rotor assembly of claim 1 wherein a plurality of the magnet slots are open outwardly in a radial direction of the core.
10. An electric machine, characterized in that the electric machine comprises a rotor assembly according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711035577.6A CN107591921A (en) | 2017-10-30 | 2017-10-30 | Rotor assembly and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711035577.6A CN107591921A (en) | 2017-10-30 | 2017-10-30 | Rotor assembly and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107591921A true CN107591921A (en) | 2018-01-16 |
Family
ID=61043927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711035577.6A Pending CN107591921A (en) | 2017-10-30 | 2017-10-30 | Rotor assembly and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107591921A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108521180A (en) * | 2018-04-25 | 2018-09-11 | 广东威灵电机制造有限公司 | The rotor of motor and motor with it |
| CN111555487A (en) * | 2019-02-12 | 2020-08-18 | 广东威灵电机制造有限公司 | Motor rotor and motor with same |
| US11855489B2 (en) | 2018-08-13 | 2023-12-26 | Gree Electric Appliances, Inc. Of Zhuhai | Rotor assembly and consequent-pole motor |
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|---|---|---|---|---|
| US20100148612A1 (en) * | 2008-12-17 | 2010-06-17 | Asmo Co., Ltd. | Brushless motor |
| CN102244427A (en) * | 2010-05-11 | 2011-11-16 | 株式会社电装 | Consequent pole permanent magnet motor |
| CN102498640A (en) * | 2009-09-18 | 2012-06-13 | 布鲁萨电子公司 | Permanent magnet exited synchronous machine with embedded magnets |
| JP2012244706A (en) * | 2011-05-17 | 2012-12-10 | Asmo Co Ltd | Rotor, motor, and motor for electric power steering |
-
2017
- 2017-10-30 CN CN201711035577.6A patent/CN107591921A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100148612A1 (en) * | 2008-12-17 | 2010-06-17 | Asmo Co., Ltd. | Brushless motor |
| CN102498640A (en) * | 2009-09-18 | 2012-06-13 | 布鲁萨电子公司 | Permanent magnet exited synchronous machine with embedded magnets |
| CN102244427A (en) * | 2010-05-11 | 2011-11-16 | 株式会社电装 | Consequent pole permanent magnet motor |
| JP2012244706A (en) * | 2011-05-17 | 2012-12-10 | Asmo Co Ltd | Rotor, motor, and motor for electric power steering |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108521180A (en) * | 2018-04-25 | 2018-09-11 | 广东威灵电机制造有限公司 | The rotor of motor and motor with it |
| CN108521180B (en) * | 2018-04-25 | 2024-01-05 | 广东威灵电机制造有限公司 | Rotor of motor and motor with same |
| US11855489B2 (en) | 2018-08-13 | 2023-12-26 | Gree Electric Appliances, Inc. Of Zhuhai | Rotor assembly and consequent-pole motor |
| CN111555487A (en) * | 2019-02-12 | 2020-08-18 | 广东威灵电机制造有限公司 | Motor rotor and motor with same |
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Effective date of registration: 20190507 Address after: 528311 Building No. 21 Gangqian Road, Industrial Park, Beijiao Town, Shunde District, Foshan City, Guangdong Province Applicant after: Guangdong Welling Automobile Parts Co., Ltd. Address before: 213000 No. 58 Palm Road, Zhonglou Economic Development Zone, Changzhou City, Jiangsu Province Applicant before: Changzhou Weiling Motor Manufacturing Co. Ltd. |