CN111969746B - Outer rotor for low-speed large-torsion outer rotor motor - Google Patents
Outer rotor for low-speed large-torsion outer rotor motor Download PDFInfo
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- CN111969746B CN111969746B CN202010986852.8A CN202010986852A CN111969746B CN 111969746 B CN111969746 B CN 111969746B CN 202010986852 A CN202010986852 A CN 202010986852A CN 111969746 B CN111969746 B CN 111969746B
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- end cover
- outer rotor
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- 238000003825 pressing Methods 0.000 claims abstract description 59
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000004663 powder metallurgy Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000004080 punching Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses an outer rotor for a low-speed large-torque outer rotor motor, which comprises a shell, a magnetic conduction frame and magnetic steel, and is characterized in that the shell comprises an end cover and a positioning ring formed on one surface of the end cover, the magnetic conduction frame is positioned at the inner periphery of the positioning ring and is formed by arranging a plurality of independent magnetic conduction blocks along the circumference, and the outer rotor also comprises a pressing plate for pressing the magnetic conduction frame on the end cover, wherein the pressing plate is fixed on the end cover by adopting a plurality of axial fasteners; the left side and the right side of each magnetic conduction block are respectively provided with a magnetic steel half-clamping groove, and two opposite magnetic steel half-clamping grooves on two adjacent magnetic conduction blocks on the circumference are spliced together to form a magnetic steel clamping groove so as to radially embed magnetic steel; and a key groove matching structure is arranged between the front end of the magnetic conduction block and the pressing plate and between the rear end of the magnetic conduction block and the end cover so as to support and position the magnetic conduction block. The outer rotor has higher salient pole ratio, more convenient production and manufacture, lower cost and better positioning stability to magnetic steel.
Description
Technical Field
The invention belongs to the technical field of structures of permanent magnet outer rotor motors, and particularly relates to an outer rotor for a low-speed large-torque outer rotor motor.
Background
The known external rotor motor is widely applied to the fields of production and manufacture of hub motors of electric bicycles, scooters and flatbed vehicles and driving motors of electric automobiles, and is developing towards the technical improvement of low-speed large torsion. The key of the external rotor motor to realize low-speed large torque force is to improve the salient pole ratio of the rotor so as to enable the motor to apply the weak magnetic speed regulation and driving technology.
As is well known, the conventional rotor is usually provided with rotor magnetic steel in the inner Zhou Tie of the annular iron core during manufacturing, and has the defects of lower salient pole ratio, being unfavorable for the application of the techniques of weak magnetic speed regulation driving and the like on the external rotor motor, and further being incapable of better realizing low-speed large-torque motor performance improvement. As an improvement, at present, a rotor, in particular an inner rotor motor, is sleeved on the periphery of a rotor core by adopting a magnetic conduction bracket formed by stacking punching sheets, and magnetic steel grooves which extend radially and are used for embedding magnetic steel are arranged on the magnetic conduction bracket along the circumference at intervals, so that each magnetic steel is radially installed along the rotor core, the magnetic steel on the circumference is distributed more, the salient pole ratio is effectively improved, the motor is facilitated to be applied to the technology of weak magnetic speed regulation driving and the like, and further the low-speed large torque force is better realized.
However, unlike the inner rotor, the outer rotor has a larger size, and if the punching magnetically permeable frame is adopted, the processing difficulty is high, and the production cost is also greatly increased. Meanwhile, the outer rotor adopts the shell to replace the middle rotor core as a supporting structure, so that the supporting stability of the magnetic conduction frame is weaker. If the diameter of the punched magnetic conduction frame is designed to be larger, the stability is further reduced, and the positioning stability of the magnetic steel fixed on the punched magnetic conduction frame is further affected.
Therefore, the better outer rotor is needed in the industry at present, has higher salient pole ratio, is more convenient to produce and manufacture, has lower production cost, and has better positioning stability for magnetic steel.
Disclosure of Invention
The invention aims at: the outer rotor for the low-speed large-torque outer rotor motor is higher in salient pole ratio, more convenient to produce and manufacture, lower in production cost and better in positioning stability of magnetic steel.
The technical scheme of the invention is as follows: the outer rotor for the low-speed large-torque outer rotor motor comprises a shell, a magnetic conduction frame and magnetic steel, and is characterized in that the shell comprises an end cover and a positioning ring formed on one surface of the end cover, the magnetic conduction frame is positioned at the inner periphery of the positioning ring and consists of a plurality of independent magnetic conduction blocks which are distributed along the circumference, and the outer rotor also comprises a pressing plate for pressing the magnetic conduction frame on the end cover, wherein the pressing plate is fixed on the end cover by adopting a plurality of axial fasteners; the left side and the right side of each magnetic conduction block are respectively provided with a magnetic steel half-clamping groove, and two opposite magnetic steel half-clamping grooves on two adjacent magnetic conduction blocks on the circumference are spliced together to form a magnetic steel clamping groove so as to radially embed magnetic steel; and a key groove matching structure is arranged between the front end of the magnetic conduction block and the pressing plate and between the rear end of the magnetic conduction block and the end cover so as to support and position the magnetic conduction block.
Further, the magnetic conductive blocks in the invention are all powder metallurgy magnetic conductive blocks.
Further, in the invention, the top surface of the magnetic conduction block is an arc surface attached to the inner peripheral wall surface of the positioning ring.
Furthermore, the half magnetic steel clamping groove is an L-shaped clamping groove, the radial width of the spliced magnetic steel clamping groove is larger than the circumferential width of the spliced magnetic steel clamping groove, and the top of the magnetic steel is propped against the inner peripheral wall surface of the positioning ring.
In the invention, the key slot matching structure between the front end of the magnetic conduction block and the pressing plate, and between the rear end of the magnetic conduction block and the end cover has various design modes, for example, the front end of the magnetic conduction block is provided with a convex key, the pressing plate is provided with a groove, and conversely, the pressing plate is also provided with a convex key, and the front end of the magnetic conduction block is provided with a groove. Also, the rear end of the magnetic block is provided with a convex key, the end cover is provided with a groove, and vice versa. The convex key can be a conventional square key or round key, and the groove is designed to match the shape of the convex key. As in the prior art, square keys refer to keys having square or rectangular cross sections, and round keys refer to keys having circular cross sections.
Of course, the invention provides a preferable scheme for the key slot matching structure: in the invention, the front end of each magnetic conduction block is formed with a front convex key, the pressing plate is provided with a pressing plate groove matched with the front convex key, the rear end of each magnetic conduction block is formed with a rear convex key, and the end cover is formed with an end cover groove matched with the rear convex key; and lifting inclined planes which tend to extrude the magnetic conduction blocks towards the direction of the positioning ring are arranged in the pressing plate groove and the end cover groove.
More preferably, the front convex key and the rear convex key are respectively provided with a guide inclined surface matched with the corresponding lifting inclined surface.
In addition to the above-mentioned key groove fitting structure, the key groove fitting structure in the present invention may be designed as follows: the front end of each magnetic conduction block is provided with a front groove, the pressing plate is provided with a pressing plate groove opposite to the front groove, and the magnetic conduction block further comprises an independent front positioning key, one side of the front positioning key is clamped into the pressing plate groove, and the other side of the front positioning key is clamped into the front groove to position the magnetic conduction block; meanwhile, the rear end of each magnetic conduction block is provided with a rear groove, the end cover is provided with an end cover groove opposite to the rear groove, and the magnetic conduction block further comprises an independent rear positioning key, one side of the rear positioning key is clamped into the end cover groove, and the other side of the rear positioning key is clamped into the rear groove to position the magnetic conduction block. And in actual implementation, the front positioning key can be a square key or a round key, and the rear positioning key can also be a square key or a round key.
In the implementation of the invention, in order to enhance the positioning stability of each magnetic conduction block, the axial fastener for penetrating and fixing the pressing plate can also penetrate and fix the magnetic conduction blocks at the same time. For example, each magnetic conduction block is locked to the end cover by the axial fasteners in a penetrating way, namely, the axial fasteners are in one-to-one corresponding arrangement relation with the magnetic conduction blocks. Or a part of the magnetic conductive block is locked to the end cover by the axial fastener in a penetrating way.
It is generally preferable that the number of the part of the magnetic conductive blocks is 1/3 to 1/2 of the total number of the magnetic conductive blocks.
Further, the axial fastener is a screw, a bolt or a rivet.
The invention has the advantages that:
1. the outer rotor adopts the magnetic conduction frame to radially embed the magnetic steel so as to improve the salient pole ratio, ensures that an outer rotor motor adopting the outer rotor can apply the weak magnetic speed regulation and driving technology, better realizes low-speed large torque, and can improve the motor torque by more than 50% under the same input power, thereby ensuring that the motor can be better applied to electric bicycles, scooters, flatbed and electric automobiles.
2. The invention ensures that the salient pole rate of the motor is improved, and meanwhile, the invention is different from the prior art in that the magnetic conduction frame is formed by arranging a plurality of independent powder metallurgy magnetic conduction blocks along the circumference instead of being stacked by punching sheets, thus the production and processing of the magnetic conduction frame are simplified, the cost is reduced, and the outer rotor can be really produced and implemented and used on a low-speed large-torsion outer rotor motor, and the motor performance is further improved.
3. According to the invention, the magnetic steel is pressed and fixed on the shell by adopting the pressing plate and the axial fastener, and the key slot matching structure is arranged between the front end of the magnetic conduction block and the pressing plate and between the rear end of the magnetic conduction block and the end cover so as to support and position the magnetic conduction block, so that the positioning stability of the magnetic conduction block is greatly improved, and the magnetic conduction block is prevented from collapsing inwards in the radial direction in long-term use. In the scheme of the preferable key slot matching structure, lifting inclined planes which tend to extrude the magnetic conduction blocks towards the direction of the positioning ring are arranged in the pressing plate groove and the end cover groove, when the magnetic conduction blocks are clamped front and back by the pressing plate and the end cover, the magnetic conduction blocks can be kept tightly against the inner peripheral wall of the positioning ring all the time by means of the lifting inclined planes, so that the positioning stability of magnetic steel is ensured, and the working reliability of the rotor is enhanced.
Drawings
The invention is further described below with reference to the accompanying drawings and examples:
FIG. 1 is a cross-sectional view of a front structure of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the embodiment of FIG. 1 (revealing the key slot mating structure of the front and rear ends of the magnetic conductive block with the pressure plate and end cap, and the axial fixing structure of the magnetic conductive block);
FIG. 3 is a cross-sectional view A-A of a second embodiment of the present invention;
FIG. 4 is a cross-sectional view A-A of a third embodiment of the present invention;
FIG. 5 is a cross-sectional view A-A of a fourth embodiment of the present invention;
FIG. 6 is a cross-sectional view A-A of a fifth embodiment of the present invention;
FIG. 7 is a cross-sectional view A-A of a sixth embodiment of the present invention.
Wherein: 1. a housing; 101. an end cap; 101a, end cap grooves; 101b, end cap male key; 102. a positioning ring; 2. magnetic steel; 3.a magnetic conductive block; 301. a magnetic steel half clamping groove; 3a, a front convex key; 3b, a rear convex key; 3c, front groove; 3d, a rear groove; 4. a pressing plate; 4a, a pressing plate groove; 4b, pressing plate convex keys; b1, lifting the inclined plane; b2, guiding inclined plane; 5. a front positioning key; 6. a rear positioning key; 7. an axial fastener.
Detailed Description
Example 1: referring to fig. 1-2, an embodiment of an outer rotor for a low-speed high-torque outer rotor motor according to the present invention is provided, which is composed of a housing 1, a magnetic conductive frame, a plurality of magnetic steels 2 and a pressing plate 4, wherein the housing 1 is composed of an end cover 101 and a positioning ring 102 formed on one side of the end cover 101. The magnetic conduction frame is located the retainer plate 102 inner periphery, and the magnetic conduction frame is arranged along circumference by 30 individual magnetic conduction pieces 3 in this embodiment and is constituteed, and every magnetic conduction piece 3 adopts axial fastener 7 to be fixed to end cover 101, and axial fastener 7 all is the screw, as shown in fig. 2. The magnetic conductive blocks 3 are powder metallurgy magnetic conductive blocks. The center of the end cover 101 is provided with a shaft hole, and the end cover is used for being sleeved on a motor shaft of an outer rotor motor as in the conventional technology.
In the invention, the left side and the right side of each magnetic conduction block 3 are respectively provided with a magnetic steel half clamping groove 301, and two opposite magnetic steel half clamping grooves 301 on two adjacent magnetic conduction blocks 3 on the circumference are spliced together to form a magnetic steel clamping groove so as to radially embed magnetic steel 2, and the magnetic steel half clamping grooves are combined with the magnetic steel half clamping grooves shown in figure 1. In this embodiment, the magnetic steel half-clamping groove 301 is an L-shaped clamping groove, the radial width of the spliced magnetic steel clamping groove is larger than the circumferential width thereof, and the top of the magnetic steel 2 abuts against the inner peripheral wall surface of the positioning ring 102.
The pressing plate 4 is used for pressing the magnetic conduction frame on the end cover 101, and the pressing plate 4 is jointly in through connection and locked on the end cover 101 by the screw for through connection and locking each magnetic conduction block 3, as shown in fig. 2; meanwhile, key groove matching structures are arranged between the front end of the magnetic conduction block 3 and the pressing plate 4, and between the rear end of the magnetic conduction block 3 and the end cover 101 so as to support and position the magnetic conduction block 3. In this embodiment, the top surface of the magnetic conductive block 3 is an arc surface attached to the inner peripheral wall surface of the positioning ring 102.
Referring to fig. 2 again, in this embodiment, a front protruding key 3a is formed at the front end of each magnetic conductive block 3, a pressing plate groove 4a matched with the front protruding key 3a is formed on the pressing plate 4, a rear protruding key 3b is formed at the rear end of each magnetic conductive block 3, and an end cover groove 101a matched with the rear protruding key 3b is formed on the end cover 101; and the pressing plate groove 4a and the end cover groove 101a are respectively provided with a lifting inclined plane B1 which tends to press the magnetic conduction block 3 towards the direction of the positioning ring 102, and the front convex key 3a and the rear convex key 3B are respectively provided with a guiding inclined plane B2 matched with the corresponding lifting inclined plane B1. When the pressure plate 4 and the end cover 101 clamp the magnetic conduction block 3 back and forth, the magnetic conduction block 3 can be always kept tightly pressed to the inner peripheral wall of the positioning ring 102 by virtue of the lifting inclined plane A, so that the positioning stability of the magnetic steel 2 is ensured, and the working reliability of the rotor is enhanced.
Example 2: the overall structure of this embodiment is substantially the same as that of embodiment 1, and can be seen from fig. 1, except that each magnetic conductive block 3 is axially fixed, so that the A-A cross-section is different from that of embodiment 1, and in particular, as we can see with reference to fig. 3, in this embodiment, each magnetic conductive block 3 is fixed to the end cover 101 by using a rivet as an axial fastener 7, and the same pressing plate 4 is also fastened by using the rivet in a penetrating manner.
Example 3: the overall structure of this embodiment is substantially the same as that of embodiment 1, and can be seen from fig. 1, and the difference is only the key slot matching structure between the front end of the magnetic conductive block 3 and the pressing plate 4, and between the rear end of the magnetic conductive block 3 and the end cover 101. Therefore, the A-A cross-section is different from that of the embodiment 1, and particularly, as shown in fig. 4, a front convex key 3a is formed at the front end of each magnetic conductive block 3 in this embodiment, and this front convex key 3a is a square key, and has no lifting inclined surface as in the embodiment 1, and a corresponding pressing plate 4 is provided with a pressing plate groove 4a matched with the front convex key 3a, and the pressing plate groove 4a is a square groove. Similarly, the rear end of each magnetic conductive block 3 is formed with a rear convex key 3b, the rear convex key 3b is a square key, no lifting inclined surface exists, the end cover 101 is formed with an end cover groove 101a matched with the rear convex key 3b, and the end cover groove 101a is a square groove.
Example 4: the overall structure of this embodiment is different from that of embodiment 3 in that the front protruding key 3a at the front end of the magnetic conductive block 3 is exchanged with the pressing plate groove 4a on the pressing plate 4, that is, the pressing plate protruding key 4b is formed on the pressing plate 4 and is a square key, and the groove (omitting the reference sign) matched with the pressing plate protruding key 4b is formed at the front end of the magnetic conductive block 3, as shown in fig. 5. Similarly, the rear convex key 3b at the rear end of the magnetic conductive block 3 is exchanged with the end cover groove 101a on the end cover 101, that is, the end cover convex key 101b is formed on the end cover 101 and is also a square key, and a groove (the label is omitted) matched with the end cover convex key is formed at the rear end of the magnetic conductive block 3. The rest of the structure of this embodiment is the same as that of embodiment 3.
Example 5: the overall structure of this embodiment is substantially the same as that of embodiment 1, and can be seen from fig. 1, and the difference is only the key slot matching structure between the front end of the magnetic conductive block 3 and the pressing plate 4, and between the rear end of the magnetic conductive block 3 and the end cover 101. Therefore, the A-A cross-section is different from that of the embodiment 1, specifically, in this embodiment, as shown in fig. 6, a front groove 3c is formed at the front end of each magnetic conductive block 3, and a pressing plate groove 4a opposite to the front groove 3c is formed on the pressing plate 4, and an independent front positioning key 5 is further included, where one side of the front positioning key 5 is snapped into the pressing plate groove 4a, and the other side is snapped into the front groove 3c to position the magnetic conductive block 3; meanwhile, a rear groove 3d is formed at the rear end of each magnetic conductive block 3, an end cover groove 101a opposite to the rear groove 3d is formed in the end cover 101, and an independent rear positioning key 6 is further included, one side of the rear positioning key 6 is clamped into the end cover groove 101a, and the other side of the rear positioning key 6 is clamped into the rear groove 3d to position the magnetic conductive blocks 3. In this embodiment, the front positioning key 5 is a square key, and the front groove 3c and the pressing plate groove 4a are square grooves matched with the square key. The rear positioning key 6 is also a square key, and the rear groove 3d and the end cover groove 101a are square grooves matched with the square key.
Example 6: the overall structure of this embodiment is basically the same as that of embodiment 5, except that in this embodiment, the front positioning key 5 is a round key, the front groove 3c and the pressing plate groove 4a are both semicircular grooves matched with the round key, the rear positioning key 6 is also a round key, and likewise, the rear groove 3d and the end cover groove 101a are both semicircular grooves matched with the round key, as shown in fig. 7.
The above embodiments are merely for illustrating the technical concept and features of the present invention, and are not intended to limit the scope of the present invention to those skilled in the art to understand the present invention and implement the same. All modifications made according to the spirit of the main technical proposal of the invention should be covered in the protection scope of the invention.
Claims (7)
1. The outer rotor for the low-speed large-torque outer rotor motor comprises a shell (1), a magnetic conduction frame and magnetic steel (2), and is characterized in that the shell (1) comprises an end cover (101) and a positioning ring (102) formed on one surface of the end cover (101), the magnetic conduction frame is positioned at the inner periphery of the positioning ring (102) and consists of a plurality of independent magnetic conduction blocks (3) which are distributed along the circumference, and the outer rotor also comprises a pressing plate (4) for pressing the magnetic conduction frame on the end cover (101), and the pressing plate (4) is fixed on the end cover (101) by adopting a plurality of axial fasteners (7); the left side and the right side of each magnetic conduction block (3) are respectively provided with a magnetic steel half clamping groove (301), and two opposite magnetic steel half clamping grooves (301) on two adjacent magnetic conduction blocks (3) on the circumference are spliced together to form a magnetic steel clamping groove so as to radially embed magnetic steel (2); meanwhile, key slot matching structures are arranged between the front end of the magnetic conduction block (3) and the pressing plate (4) and between the rear end of the magnetic conduction block (3) and the end cover (101) so as to support and position the magnetic conduction block (3);
The magnetic conductive blocks (3) are powder metallurgy magnetic conductive blocks;
the top surface of the magnetic conduction block (3) is an arc surface attached to the inner peripheral wall surface of the positioning ring (102);
The magnetic steel half clamping groove (301) is an L-shaped clamping groove, the radial width of the spliced magnetic steel clamping groove is larger than the circumferential width of the spliced magnetic steel clamping groove, and the top of the magnetic steel (2) is propped against the inner peripheral wall surface of the positioning ring (102).
2. The outer rotor for a low-speed large-torque outer rotor motor according to claim 1, wherein a front protruding key (3 a) is formed at the front end of each magnetic conductive block (3), a pressing plate groove (4 a) matched with the front protruding key (3 a) is formed on the pressing plate (4), a rear protruding key (3 b) is formed at the rear end of each magnetic conductive block (3), and an end cover groove (101 a) matched with the rear protruding key (3 b) is formed on the end cover (101); and the pressing plate groove (4 a) and the end cover groove (101 a) are respectively internally provided with a lifting inclined surface (B1) which tends to press the magnetic conduction block (3) towards the direction of the positioning ring (102).
3. The outer rotor for a low-speed large-torque outer rotor motor according to claim 2, characterized in that guide inclined planes (B2) matched with the corresponding lifting inclined planes (B1) are arranged on the front convex key (3 a) and the rear convex key (3B).
4. The outer rotor for a low-speed large-torque outer rotor motor according to claim 1, wherein a front groove (3 c) is formed in the front end of each magnetic conductive block (3), a pressing plate groove (4 a) opposite to the front groove (3 c) is formed in the pressing plate (4), and an independent front positioning key (5) is further included, one side of the front positioning key (5) is clamped into the pressing plate groove (4 a), and the other side of the front positioning key is clamped into the front groove (3 c) to position the magnetic conductive block (3); meanwhile, a rear groove (3 d) is formed in the rear end of each magnetic conduction block (3), an end cover groove (101 a) opposite to the rear groove (3 d) is formed in the end cover (101), the magnetic conduction block further comprises an independent rear positioning key (6), one side of the rear positioning key (6) is clamped into the end cover groove (101 a), and the other side of the rear positioning key is clamped into the rear groove (3 d) to position the magnetic conduction blocks (3).
5. The outer rotor for a low-speed high-torque outer rotor motor according to claim 1, characterized in that each of the magnetically permeable blocks (3) is locked to an end cover (101) by the axial fastener (7) being penetrated, or a part of the magnetically permeable blocks (3) is locked to an end cover (101) by the axial fastener (7) being penetrated.
6. The outer rotor for the low-speed large-torque outer rotor motor according to claim 5, wherein the number of the part of the magnetic conductive blocks (3) is 1/3-1/2 of the total number of the magnetic conductive blocks (3).
7. External rotor for low-speed high-torque external rotor motor according to claim 1, characterized in that the axial fastener (7) is a screw, a bolt or a rivet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010986852.8A CN111969746B (en) | 2020-09-18 | 2020-09-18 | Outer rotor for low-speed large-torsion outer rotor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010986852.8A CN111969746B (en) | 2020-09-18 | 2020-09-18 | Outer rotor for low-speed large-torsion outer rotor motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111969746A CN111969746A (en) | 2020-11-20 |
| CN111969746B true CN111969746B (en) | 2024-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010986852.8A Active CN111969746B (en) | 2020-09-18 | 2020-09-18 | Outer rotor for low-speed large-torsion outer rotor motor |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112769267B (en) * | 2021-01-21 | 2024-05-31 | 苏州盛亿电机有限公司 | Outer rotor adopting punching sheet magnetic conduction blocks |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201601588U (en) * | 2009-12-23 | 2010-10-06 | 昆山永恒盛工业技术有限公司 | Permanent-magnet synchronous motor with low rotating speed and large torque |
| CN103001360A (en) * | 2012-11-19 | 2013-03-27 | 吴正林 | Permanent magnet reluctance type in-wheel motor |
| CN104333158A (en) * | 2014-10-11 | 2015-02-04 | 镇江中船现代发电设备有限公司 | Permanent magnet motor rotor structure |
| DE202015101778U1 (en) * | 2014-08-21 | 2015-04-23 | Jiangxi Gongbu Machinery Co., Ltd. | External rotor motor |
| CN111342633A (en) * | 2020-04-07 | 2020-06-26 | 北京理工大学 | Three-phase power generation device with high-power-density outer rotor structure |
| CN212435459U (en) * | 2020-09-18 | 2021-01-29 | 苏州盛亿电机有限公司 | External rotor for low-speed large-torque external rotor motor |
-
2020
- 2020-09-18 CN CN202010986852.8A patent/CN111969746B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201601588U (en) * | 2009-12-23 | 2010-10-06 | 昆山永恒盛工业技术有限公司 | Permanent-magnet synchronous motor with low rotating speed and large torque |
| CN103001360A (en) * | 2012-11-19 | 2013-03-27 | 吴正林 | Permanent magnet reluctance type in-wheel motor |
| DE202015101778U1 (en) * | 2014-08-21 | 2015-04-23 | Jiangxi Gongbu Machinery Co., Ltd. | External rotor motor |
| CN104333158A (en) * | 2014-10-11 | 2015-02-04 | 镇江中船现代发电设备有限公司 | Permanent magnet motor rotor structure |
| CN111342633A (en) * | 2020-04-07 | 2020-06-26 | 北京理工大学 | Three-phase power generation device with high-power-density outer rotor structure |
| CN212435459U (en) * | 2020-09-18 | 2021-01-29 | 苏州盛亿电机有限公司 | External rotor for low-speed large-torque external rotor motor |
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