CN114825708A - Magnetic gear rotor and structure forming tool system thereof - Google Patents
Magnetic gear rotor and structure forming tool system thereof Download PDFInfo
- Publication number
- CN114825708A CN114825708A CN202210517176.9A CN202210517176A CN114825708A CN 114825708 A CN114825708 A CN 114825708A CN 202210517176 A CN202210517176 A CN 202210517176A CN 114825708 A CN114825708 A CN 114825708A
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- 238000000034 method Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a magnetic gear rotor and a structure forming tool system thereof. The rotor permanent magnets are arranged in a special structure, namely, the rotor permanent magnets are formed by alternately arranging radial and tangential polarized permanent magnets, grooves are designed on the rotor disc, the radial polarized permanent magnets are arranged in the grooves, and magnetic conduction blocks are designed on the outer sides of the permanent magnets. In order to facilitate the installation of the rotor permanent magnet, a positioning disc and a mounting plate are designed, a central hole of the rotor disc is used as a positioning reference, the positioning disc, the mounting plate and the rotor disc are ensured to be concentric, and meanwhile, the installation accuracy of the permanent magnet is ensured. The invention has good effects on improving the torque density of the magnetic gear, ensuring the installation precision of the permanent magnet and improving the utilization rate of the permanent magnet, and plays a role in promoting the development and application of the magnetic gear.
Description
Technical Field
The present invention relates to a magnetic gear.
Background
The magnetic gear has a structure similar to that of a mechanical gear, utilizes the interaction between magnetic fields to transmit torque, is in non-contact torque transmission, can reduce mechanical noise and vibration, reduces mechanical loss, improves the operation efficiency, has accurate peak torque, and has an automatic protection function during overload.
At present, the existing magnetic gear has the problems of small transmission torque, low torque density and the like. Therefore, how to optimize the structural form of the magnetic gear to improve the torque density of the magnetic gear and make the magnetic gear have higher use value is a problem to be solved at present.
Disclosure of Invention
The invention aims to provide a magnetic gear rotor, which is characterized in that: the permanent magnet rotor comprises a rotor disc (1), a plurality of radial permanent magnets (2), a plurality of tangential permanent magnets (3) and a plurality of magnetic conduction blocks (4);
the center of the rotor disc (1) is a center hole (101), and a plurality of grooves (103) for mounting the radial permanent magnets (2) are uniformly distributed on the periphery of the rotor disc (1); a flange (102) is arranged between two adjacent grooves (103);
in each radial permanent magnet (2), one part containing one magnetic pole is fixed in the groove (103), and the other part containing the other magnetic pole is positioned around the rotor disc (1) outside the groove (103); the magnetic pole of each radial permanent magnet (2) points to the radial direction of the rotor disc (1) when rotating; any two adjacent radial permanent magnets (2) are positioned in the grooves (103) and have opposite magnetic poles;
a gap I (201) is formed between the parts, located outside the grooves (103), of any two adjacent radial permanent magnets (2), and the tangential permanent magnets (3) are accommodated in the gap I (201); one part of each tangential permanent magnet (3) is fixed in the gap I (201), and the other part of each tangential permanent magnet is positioned at the periphery of the rotor disc (1) outside the gap I (201); the orientation of the magnetic pole of each tangential permanent magnet (3) is tangential when the rotor disc (1) rotates;
any two adjacent tangential permanent magnets (3) are positioned between the parts outside the gap I (201) to form a gap II (301), and the gap I (301) is filled with the magnetic conduction block (4).
Further, the device also comprises a left rotor end plate (5) and a right rotor end plate (6); the left rotor end plate (5) and the right rotor end plate (6) are respectively installed on two sides of the rotor disc (1), and the rotor disc (1), the radial permanent magnets (2), the tangential permanent magnets (3) and the magnetic conduction blocks (4) are fixed between the left rotor end plate (5) and the right rotor end plate (6).
Further, the central hole (101) is provided with a stepped hole for mounting a bearing.
Further, the rotor disc (1) is provided with fan-shaped holes (105) for communicating the front and rear cases and connecting in a limiting way, and round holes (106) for mounting a bearing and supporting the rotor
Further, rotor dish (1) is provided with a plurality of through-holes (104), be provided with on left side rotor end plate (5) and the right side rotor end plate (6) with the counter bore that through-hole (104) correspond, hexagonal socket head cap screw (7) in the interior that often runs through-hole (104) and counter bore are fixed rotor dish (1), left side rotor end plate (5) and right side rotor end plate (6) together.
The invention also discloses a system tool adopted by the system tool, which comprises a positioning disc (8) and a mounting plate (9); the positioning disc (8) is disc-shaped, and the center of the upper surface of the positioning disc is provided with a central step (801) corresponding to the central hole (101);
the mounting plate (9) is fixed on the upper surface of the positioning disc (8) and is coaxial with the mounting plate (9) of the positioning disc (8); the mounting plate (9) is annular, a plurality of positioning flanges (901) which are in one-to-one correspondence with the grooves (103) are arranged on the surface facing the center of the mounting plate (9), and positioning grooves (902) which are in one-to-one correspondence with the flanges (102) are arranged between any two adjacent positioning flanges (901);
an assembling position of the radial permanent magnet (2) is arranged between the positioning flange (901) and the groove (103);
the positioning groove (902) and the flange (102) are in the assembling position of the tangential permanent magnet (3);
the method comprises the following steps:
1) the positioning plate (8) and the mounting plate (9) are fixed together by bolts.
2) The rotor disc (1) is installed on the positioning disc (8), and the positioning disc (8), the mounting plate (9) and the rotor disc (8) are concentric by taking a central hole of the rotor disc as a positioning reference.
3) According to the arrangement rule of the two types of permanent magnets, a plurality of radial permanent magnets (2) and a plurality of tangential permanent magnets (3) are respectively bonded on the rotor disc.
4) After solidification, the positioning disc and the mounting plate are removed, and the magnetic conduction blocks (4) are mounted at the positions of the notches.
5) And (3) installing the left rotor end plate (5) and the right rotor end plate (6) at two sides of the rotor disc (8) and fixing to finish the assembly of the product.
Further, an annular step (802) for supporting the rotor disc (1) is arranged around the central step (801); the outermost ring of the positioning disc (8) is an outer peripheral flange (804) used for limiting the positioning disc (8); the annular step (802) is preceded by an annular detent groove (803) with a peripheral flange (804), the mounting plate (9), and the radial (2) and tangential (3) permanent magnets fitted around the rotor disc (1) are located in the detent groove (803).
The technical effects of the invention are undoubted:
(1) in the invention, the permanent magnet structure and the magnetic conduction blocks are reasonably designed and arranged, so that the air gap magnetic field tends to be sinusoidal, and the working torque of the magnetic gear is improved.
(2) According to the invention, the rotor disc and the end plate thereof are designed, so that the permanent magnet and the rotor disc are connected more firmly, and the phenomena of permanent magnet falling, loosening and the like in the operation process of the magnetic gear are avoided.
(3) According to the invention, through reasonably designing the tooling system and the mounting method, the mounting of the rotor permanent magnet is convenient, and the mounting precision of the product is ensured.
In conclusion, the invention provides a propulsion function for the development and application of the magnetic gear.
Drawings
FIG. 1 is a radial cross-sectional view of the structure of the present invention;
FIG. 2 is an axial cross-sectional view of the structure of the present invention;
FIG. 3 is an axial schematic view of the installation method of the present invention;
fig. 4 is a radial schematic view of the installation method of the present invention.
In the figure: the rotor disc comprises a rotor disc (1), a center hole (101), a flange (102), a groove (103), a through hole (104), a fan-shaped hole (105), a round hole (106), a radial permanent magnet (2), a gap I (201), a tangential permanent magnet (3), a gap II (301), a magnetic conduction block (4), a left rotor end plate (5), a right rotor end plate (6), an inner hexagonal cylinder head bolt (7), a positioning disc (8), a central step (801), an annular flange (802), a positioning groove (803), a peripheral flange (804), a positioning hole (805), a mounting plate (9), a positioning flange (901) and a positioning groove (902).
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, but it should not be construed that the scope of the above-described subject matter is limited to the examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
a magnetic gerotor, characterized by: the permanent magnet rotor comprises a rotor disc 1, a plurality of radial permanent magnets 2, a plurality of tangential permanent magnets 3 and a plurality of magnetic conduction blocks 4;
referring to fig. 1, in the partial enlarged views a1, a2 to a3 corresponding to the schematic diagram of the S portion of the rotor disc 1, the tangential permanent magnet 3, the plurality of magnetic conductive blocks 4 and the process of assembling the magnetic conductive blocks 4 to the rotor disc 1 are reflected in sequence.
The center of the rotor disc 1 is a central hole 101, and the central hole 101 may be provided with a stepped hole for mounting a bearing. A plurality of grooves 103 for mounting radial permanent magnets 2 are uniformly distributed on the periphery of the rotor disc 1; between two adjacent grooves 103 is a flange 102;
one part of each radial permanent magnet 2 containing one magnetic pole is fixed in the groove 103, and the other part containing the other magnetic pole is positioned at the periphery of the rotor disc 1 outside the groove 103; the magnetic pole of each radial permanent magnet 2 points to the radial direction of the rotor disc 1 during rotation; any two adjacent radial permanent magnets 2 are positioned in the grooves 103, and the magnetic poles are opposite;
a gap I201 is formed between the parts, located outside the grooves 103, of any two adjacent radial permanent magnets 2, and the tangential permanent magnets 3 are accommodated in the gap I201; one part of each tangential permanent magnet 3 is fixed in the gap I201, and the other part is positioned at the periphery of the rotor disc 1 outside the gap I201; the orientation of the magnetic pole of each tangential permanent magnet 3 is tangential when the rotor disc 1 rotates;
any two adjacent tangential permanent magnets 3 form a gap II301 between the parts outside the gap I201, and the gap I301 is filled with the magnetic conduction block 4.
Example 2:
the main structure of the present embodiment is the same as that of embodiment 1, and further, the present embodiment further includes a left rotor end plate 5 and a right rotor end plate 6; the left rotor end plate 5 and the right rotor end plate 6 are respectively arranged on two sides of the rotor disc 1, and the rotor disc 1, the radial permanent magnets 2, the tangential permanent magnets 3 and the magnetic conduction blocks 4 are fixed between the left rotor end plate 5 and the right rotor end plate 6.
In order to fix the product more tightly, the rotor disc 1 is provided with a plurality of through holes 104, the left rotor end plate 5 and the right rotor end plate 6 are provided with counter bores corresponding to the through holes 104, and the rotor disc 1, the left rotor end plate 5 and the right rotor end plate 6 are fixed together by the hexagon socket head cap bolts 7 which commonly penetrate through the through holes 104 and the counter bores.
Example 3:
the embodiment discloses a tool system for molding a magnetic gear rotor structure, which is used in the embodiment 1 or 2, and is characterized in that: comprises a positioning disc 8 and a mounting plate 9;
the positioning disc 8 is in a disc shape, and the center of the upper surface of the positioning disc is provided with a central step 801 corresponding to the central hole 101; an annular step 802 for supporting the rotor disc 1 is arranged around the central step 801; the outermost ring of the positioning disc 8 is a peripheral flange 804 for limiting the positioning disc 8; the annular step 802 and the peripheral flange 804 are preceded by an annular detent 803, the mounting plate 9, and the radial 2 and tangential 3 permanent magnets fitted around the rotor disc 1 are located in the detent 803.
The mounting plate 9 is fixed on the upper surface of the positioning plate 8 and is coaxial with the mounting plate 9 of the positioning plate 8; the mounting plate 9 is annular, the surface facing the center of the mounting plate 9 is provided with a plurality of positioning flanges 901 which are in one-to-one correspondence with the grooves 103, and positioning grooves 902 which are in one-to-one correspondence with the flanges 102 are arranged between any two adjacent positioning flanges 901;
an assembling position of the radial permanent magnet 2 is arranged between the positioning flange 901 and the groove 103;
the positioning groove 902 and the flange 102 are assembled by the tangential permanent magnet 3.
During assembly, the method comprises the following steps:
1) the positioning plate 8 and the mounting plate 9 are bolted together. As shown, the spigot design formed by each groove and flange ensures that the puck and mounting plate are concentric.
2) The rotor disc 1 is arranged on the positioning disc 8, and the positioning disc 8, the mounting plate 9 and the rotor disc 8 are ensured to be concentric by taking the central hole of the rotor disc as a positioning reference.
3) According to the arrangement rule of the two types of permanent magnets, a plurality of radial permanent magnets 2 and a plurality of tangential permanent magnets 3 are respectively bonded on the rotor disc.
4) After solidification, the positioning disc and the mounting plate are removed, and the magnetic conduction blocks 4 are mounted at the positions of the notches.
5) The left rotor end plate 5 and the right rotor end plate 6 are mounted on both sides of the rotor disk 8 and fixed (fixed by hexagonal cylindrical bolts), and the assembly of the product is completed.
Claims (7)
1. A magnetic gerotor, characterized by: the permanent magnet rotor comprises a rotor disc (1), a plurality of radial permanent magnets (2), a plurality of tangential permanent magnets (3) and a plurality of magnetic conduction blocks (4);
the center of the rotor disc (1) is a center hole (101), and a plurality of grooves (103) for mounting the radial permanent magnets (2) are uniformly distributed on the periphery of the rotor disc (1); a flange (102) is arranged between two adjacent grooves (103);
in each radial permanent magnet (2), one part containing one magnetic pole is fixed in the groove (103), and the other part containing the other magnetic pole is positioned around the rotor disc (1) outside the groove (103); the magnetic pole of each radial permanent magnet (2) points to the radial direction of the rotor disc (1) when rotating; any two adjacent radial permanent magnets (2) are positioned in the grooves (103) and have opposite magnetic poles;
a gap I (201) is formed between the parts, located outside the grooves (103), of any two adjacent radial permanent magnets (2), and the tangential permanent magnets (3) are accommodated in the gap I (201); one part of each tangential permanent magnet (3) is fixed in the gap I (201), and the other part of each tangential permanent magnet is positioned at the periphery of the rotor disc (1) outside the gap I (201); the orientation of the magnetic pole of each tangential permanent magnet (3) is tangential when the rotor disc (1) rotates;
any two adjacent tangential permanent magnets (3) are positioned between the parts outside the gap I (201) to form a gap II (301), and the gap I (301) is filled with the magnetic conduction block (4).
2. A magnetic gerotor as claimed in claim 1, wherein: the rotor comprises a left rotor end plate (5) and a right rotor end plate (6); the left rotor end plate (5) and the right rotor end plate (6) are respectively installed on two sides of the rotor disc (1), and the rotor disc (1), the radial permanent magnets (2), the tangential permanent magnets (3) and the magnetic conduction blocks (4) are fixed between the left rotor end plate (5) and the right rotor end plate (6).
3. A magnetic gerotor as claimed in claim 1 or 2, characterized in that: the central hole (101) is provided with a stepped hole for mounting a bearing.
4. A magnetic gerotor as claimed in claim 1, wherein: the rotor disc (1) is provided with a sector hole (105) and a round hole (106).
5. A magnetic gerotor as claimed in claim 1 or 3, characterized in that: the rotor disc (1) is provided with a plurality of through holes (104), the left rotor end plate (5) and the right rotor end plate (6) are provided with counter bores corresponding to the through holes (104), and the rotor disc (1), the left rotor end plate (5) and the right rotor end plate (6) are fixed together by adopting hexagon socket head cap bolts (7) penetrating through the through holes (104) and the counter bores.
6. A method for forming a magnetic gerotor structure according to any one of claims 1 to 5, characterized in that:
the adopted system tool comprises a positioning disc (8) and a mounting plate (9); the positioning disc (8) is disc-shaped, and the center of the upper surface of the positioning disc is provided with a central step (801) corresponding to the central hole (101);
the mounting plate (9) is fixed on the upper surface of the positioning disc (8) and is coaxial with the mounting plate (9) of the positioning disc (8); the mounting plate (9) is annular, a plurality of positioning flanges (901) which are in one-to-one correspondence with the grooves (103) are arranged on the surface facing the center of the mounting plate (9), and positioning grooves (902) which are in one-to-one correspondence with the flanges (102) are arranged between any two adjacent positioning flanges (901);
an assembling position of the radial permanent magnet (2) is arranged between the positioning flange (901) and the groove (103);
the positioning groove (902) and the flange (102) are in the assembling position of the tangential permanent magnet (3);
the method comprises the following steps:
1) the positioning plate (8) and the mounting plate (9) are fixed together by bolts.
2) The rotor disc (1) is installed on the positioning disc (8), and the positioning disc (8), the mounting plate (9) and the rotor disc (8) are concentric by taking a central hole of the rotor disc as a positioning reference.
3) According to the arrangement rule of the two types of permanent magnets, a plurality of radial permanent magnets (2) and a plurality of tangential permanent magnets (3) are respectively bonded on the rotor disc.
4) After solidification, the positioning disc and the mounting plate are removed, and the magnetic conduction blocks (4) are mounted at the positions of the notches.
5) And (3) installing the left rotor end plate (5) and the right rotor end plate (6) at two sides of the rotor disc (8) and fixing to finish the assembly of the product.
7. The method of claim 6, wherein: the periphery of the central step (801) is provided with an annular step (802) for supporting the rotor disc (1); the outermost ring of the positioning disc (8) is an outer peripheral flange (804) used for limiting the positioning disc (8); the annular step (802) is preceded by an annular detent groove (803) with a peripheral flange (804), the mounting plate (9), and the radial (2) and tangential (3) permanent magnets fitted around the rotor disc (1) are located in the detent groove (803).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210517176.9A CN114825708A (en) | 2022-05-12 | 2022-05-12 | Magnetic gear rotor and structure forming tool system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210517176.9A CN114825708A (en) | 2022-05-12 | 2022-05-12 | Magnetic gear rotor and structure forming tool system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114825708A true CN114825708A (en) | 2022-07-29 |
Family
ID=82513386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210517176.9A Pending CN114825708A (en) | 2022-05-12 | 2022-05-12 | Magnetic gear rotor and structure forming tool system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114825708A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006320109A (en) * | 2005-05-12 | 2006-11-24 | Asmo Co Ltd | Rotating electric machine and manufacturing method thereof |
| CN102324821A (en) * | 2011-08-30 | 2012-01-18 | 东南大学 | Coaxial magnetic gear |
| CN202550841U (en) * | 2012-02-29 | 2012-11-21 | 腾达电动科技镇江有限公司 | Disk motor without rotor yoke and stator yoke |
| CN107612281A (en) * | 2017-10-16 | 2018-01-19 | 三峡大学 | One kind improves Halbach type magnetic gear devices |
| CN107959361A (en) * | 2016-10-18 | 2018-04-24 | 中国科学院宁波材料技术与工程研究所 | The stator of permanent magnet torque motor and the permanent magnet torque motor with high torque density |
| CN110120716A (en) * | 2019-05-15 | 2019-08-13 | 华中科技大学 | A kind of combination array formula outer rotor axial and radial mixing behavior magnetic flow permanent magnet motor |
| RU2716011C1 (en) * | 2019-09-06 | 2020-03-05 | Ильдар Фанильевич Зайнуллин | Magnetoelectric generator |
| CN112671187A (en) * | 2021-01-19 | 2021-04-16 | 北京科环新源工程技术有限公司 | Mixed magnetic circuit solid permanent magnet rotor and assembly tool and assembly method thereof |
| CN113595283A (en) * | 2021-08-04 | 2021-11-02 | 中山大洋电机股份有限公司 | Rotor of disc type permanent magnet motor and disc type permanent magnet motor using same |
-
2022
- 2022-05-12 CN CN202210517176.9A patent/CN114825708A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006320109A (en) * | 2005-05-12 | 2006-11-24 | Asmo Co Ltd | Rotating electric machine and manufacturing method thereof |
| CN102324821A (en) * | 2011-08-30 | 2012-01-18 | 东南大学 | Coaxial magnetic gear |
| CN202550841U (en) * | 2012-02-29 | 2012-11-21 | 腾达电动科技镇江有限公司 | Disk motor without rotor yoke and stator yoke |
| CN107959361A (en) * | 2016-10-18 | 2018-04-24 | 中国科学院宁波材料技术与工程研究所 | The stator of permanent magnet torque motor and the permanent magnet torque motor with high torque density |
| CN107612281A (en) * | 2017-10-16 | 2018-01-19 | 三峡大学 | One kind improves Halbach type magnetic gear devices |
| CN110120716A (en) * | 2019-05-15 | 2019-08-13 | 华中科技大学 | A kind of combination array formula outer rotor axial and radial mixing behavior magnetic flow permanent magnet motor |
| RU2716011C1 (en) * | 2019-09-06 | 2020-03-05 | Ильдар Фанильевич Зайнуллин | Magnetoelectric generator |
| CN112671187A (en) * | 2021-01-19 | 2021-04-16 | 北京科环新源工程技术有限公司 | Mixed magnetic circuit solid permanent magnet rotor and assembly tool and assembly method thereof |
| CN113595283A (en) * | 2021-08-04 | 2021-11-02 | 中山大洋电机股份有限公司 | Rotor of disc type permanent magnet motor and disc type permanent magnet motor using same |
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