CN201846141U - Permanent magnetic ironless motor with axial magnet field and magnetic flux gathering function - Google Patents
Permanent magnetic ironless motor with axial magnet field and magnetic flux gathering function Download PDFInfo
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- CN201846141U CN201846141U CN2010205319097U CN201020531909U CN201846141U CN 201846141 U CN201846141 U CN 201846141U CN 2010205319097 U CN2010205319097 U CN 2010205319097U CN 201020531909 U CN201020531909 U CN 201020531909U CN 201846141 U CN201846141 U CN 201846141U
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Abstract
The utility model discloses a permanent magnetic ironless motor with axial magnet field and magnetic flux gathering function, which comprises permanent magnetic plates (1) and a winding disc plate. The winding disc plate is arranged between the two permanent magnetic plates (1), and a plurality of paired fan-shaped main magnet poles (2) are arranged on the permanent magnetic plates (1). The main magnet poles (2) are in the arrangement of a main magnet pole N, a main magnet pole S, a main magnet pole N and a main magnet pole S sequentially. A permanent magnetic bar (4) for reducing magnet leakage is respectively arranged in a gap (3) between the opposite permanent magnet poles of two adjacent fan-shaped permanent magnets on the permanent magnetic plates (1). The magnet field direction of the permanent magnetic bar (4) is perpendicular with the magnet field direction of the main magnet poles. The arrangement of like-repellent magnet poles formed on the permanent magnetic plates is as follows: the main magnet pole N, the permanent magnetic bar n, the permanent magnetic bar s, the main magnet pole S, the permanent magnetic bar s, the permanent magnetic bar n, the main magnet pole N, the permanent magnetic bar n, the permanent magnetic bar s and the main magnet pole S. The magnetic density of the main magnet pole can be increased to achieve the purpose of gathering magnetic flux, thereby improving the power density and efficiency of the motor.
Description
Technical field
The utility model relates to technical field of motors, relates in particular to a kind of axial magnetic field permanent magnet iron-core less motor with poly-magnetic function.
Background technology
Existing axial magnetic field iron-core less motor, on a permanent magnetism disc, fan-shaped main pole according to ... N-S-N-S ... closely arrange, the gap between two fan-shaped main poles on the circumferencial direction is very little, is not more than the thickness of permanent magnet usually, even is connected in together; And axially, between two permanent magnet discs, the distance between the main pole N utmost point and the S utmost point is bigger, equals the gap that winding thickness between them adds both sides.Therefore, have bigger leakage field between two on the same permanent magnetism disc opposite polarity fan-shaped main poles, the magnetic line of force directly passes narrow crack and the magnetic circuit closure, and the power of motor and efficient can descend therefore and to some extent.
Summary of the invention
For overcoming the deficiencies in the prior art, the utility model provides a kind of axial magnetic field permanent magnet iron-core less motor with poly-magnetic function.
For realizing aforesaid goal of the invention, the utility model adopts technical scheme as described below:
A kind of axial magnetic field permanent magnet iron-core less motor with poly-magnetic function comprises: permanent magnetism disc and winding disc, winding disc place between two permanent magnetism discs; Distribute on the described permanent magnetism disc and be provided with some right fan-shaped main poles that are, magnetic pole is respectively the main pole N utmost point, the main pole S utmost point, the main pole N utmost point, the arrangement of the main pole S utmost point in regular turn, be provided with a permanent magnetic strip that reduces leakage field on the permanent magnetism disc between adjacent two fan-shaped main poles of the opposite sex in the slit, the pole arrangement that the formation same sex is repelled each other on the permanent magnetism disc is: main pole N-permanent magnetic strip n-permanent magnetic strip s-main pole S-permanent magnetic strip s-permanent magnetic strip n-main pole N-permanent magnetic strip n-permanent magnetic strip s-main pole S.
Described a kind of axial magnetic field permanent magnet iron-core less motor with poly-magnetic function, described permanent magnetism disc can link to each other with motor housing or axle respectively with the winding disc, and shell and axle can become rotor or stator respectively, form inner-rotor brushless motor, external rotor brushless or brush motor according to this.
Owing to adopt aforesaid technical scheme, the utlity model has superiority as described below:
A kind of axial magnetic field permanent magnet iron-core less motor with poly-magnetic function, the magnetic field principle that has adopted the same sex to repel each other, its pole arrangement is N-n-s-S-s-n-N-n-s-S-s-n-N, and wherein capitalization is represented main pole, and lowercase is represented the permanent magnetic strip magnetic pole.Because main pole is much larger than the magnetic stripe that embeds, therefore can not impact the motor operation, but for leakage field, then be " magnetic circuit is obstructed ", the magnetic line of force must be outwardly-bent, walks around permanent magnetic strip, could arrive adjacent different in nature main pole and realize the magnetic circuit closure, its path can be greater than the distance between the main pole relative on two permanent magnetism discs, so the leakage field magnetic line of force is driven into main pole extremely down, arrives different in nature main pole and closure.Thereby, increased the density of line of magnetic force of main pole, reach the purpose of poly-magnetic, thereby improved the power density and the efficient of motor.
Description of drawings
Fig. 1 is the structural representation of axial magnetic field permanent magnet iron-core less motor;
Fig. 2 does not have the permanent magnetism disc structure of permanent magnetic strip and the schematic diagram of the leakage field magnetic line of force for existing permanent magnetism iron-core less motor;
Fig. 3 inlays the structural representation of the permanent magnetism disc of permanent magnetic strip for the utility model;
Fig. 4 is the direction schematic diagram that the motor main pole magnetic line of force and permanent magnetic strip change the leakage field magnetic line of force;
Among the figure: 1-permanent magnetism disc; The 2-main pole; The 3-slit; The 4-permanent magnetic strip; 5-winding disc; The 6-motor shaft; The 7-leakage field magnetic line of force;
Embodiment
Shown in Fig. 1,2,3,4:
A kind of axial magnetic field permanent magnet iron-core less motor with poly-magnetic function, comprise permanent magnetism disc and winding disc, described permanent magnetism disc can link to each other with motor housing or axle respectively with the winding disc, and shell and axle can be made rotor or stator respectively, form inner-rotor brushless motor, outer rotor brushless motor or brush motor according to this.
With under permanent magnet disc and the situation that shell links to each other, described winding disc (5) links to each other with motor shaft (6), winding disc (5) places between two permanent magnetism discs (1), described permanent magnetism disc (1) is gone up to distribute and is provided with some right fan-shaped main poles (2) that are, magnetic pole is respectively the main pole N utmost point in regular turn, the main pole S utmost point, the main pole N utmost point, the main pole S utmost point is arranged, between the different in nature permanent-magnet pole (2) of last adjacent two the fan-shaped permanent magnets of permanent magnetism disc (1), be provided with a permanent magnetic strip (4) that reduces leakage field in the slit (3), the magnetic direction of its magnetic direction and main pole is perpendicular, the pole arrangement of repelling each other in the last formation of permanent magnetism disc (1) same sex is: main pole N-permanent magnetic strip n-permanent magnetic strip s-main pole S-permanent magnetic strip s-permanent magnetic strip n-main pole N-permanent magnetic strip n-permanent magnetic strip s-main pole S, i.e. N-n-s-S-s-n-N-n-s-S-s-n-N.
During use, axial magnetic field permanent magnet iron-core less motor with poly-magnetic function, by inlay between the fan-shaped main pole seam of adjacent two opposite sex on the permanent magnetism disc one very narrow, the permanent magnetic strip that the side direction that its magnetic direction is vertical with the main pole magnetic direction magnetizes is realized, the side of the n utmost point subtend main pole N of permanent magnetic strip; The side of the s utmost point subtend main pole S of permanent magnetic strip, form magnetic field N-n-s-S that the same sex is repelled each other, S-s-n-N, N-n-s-S is not because main pole much larger than embedded magnetic stripe, therefore can impact the motor operation, but for leakage field, then be " magnetic circuit is obstructed ", the magnetic line of force must be outwardly-bent, skips permanent magnetic strip, could arrive adjacent different in nature main pole, finish the magnetic circuit closure, its path can be greater than the distance between the main pole relative on two permanent magnetism discs, so the leakage field magnetic line of force is driven into main pole extremely down, arrive different in nature main pole and closure, increase the density of line of magnetic force of main pole, reached the purpose of poly-magnetic, thereby improved the power density of motor.
Claims (2)
1. axial magnetic field permanent magnet iron-core less motor with poly-magnetic function, comprise permanent magnetism disc and winding disc, winding disc (5) places between two permanent magnetism discs (1), described permanent magnetism disc (1) is gone up to distribute and is provided with some right fan-shaped main poles (2) that are, magnetic pole is respectively the main pole N utmost point in regular turn, the main pole S utmost point, the main pole N utmost point, the main pole S utmost point is arranged, it is characterized in that: between the different in nature permanent-magnet pole (2) of last adjacent two the fan-shaped permanent magnets of permanent magnetism disc (1), be provided with a permanent magnetic strip (4) that reduces leakage field in the slit (3), the magnetic direction of its magnetic direction and main pole is perpendicular, and the pole arrangement of repelling each other in the last formation of permanent magnetism disc (1) same sex is: main pole N-permanent magnetic strip n-permanent magnetic strip s-main pole S-permanent magnetic strip s-permanent magnetic strip n-main pole N-permanent magnetic strip n-permanent magnetic strip s-main pole S.
2. a kind of axial magnetic field permanent magnet iron-core less motor as claimed in claim 1 with poly-magnetic function, comprise permanent magnetism disc and winding disc, described permanent magnetism disc can link to each other with motor housing or axle respectively with the winding disc, and shell and axle can become rotor or stator respectively, form inner-rotor brushless motor, outer rotor brushless motor and brush motor according to this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205319097U CN201846141U (en) | 2010-09-17 | 2010-09-17 | Permanent magnetic ironless motor with axial magnet field and magnetic flux gathering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205319097U CN201846141U (en) | 2010-09-17 | 2010-09-17 | Permanent magnetic ironless motor with axial magnet field and magnetic flux gathering function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201846141U true CN201846141U (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205319097U Expired - Fee Related CN201846141U (en) | 2010-09-17 | 2010-09-17 | Permanent magnetic ironless motor with axial magnet field and magnetic flux gathering function |
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| CN (1) | CN201846141U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218758A (en) * | 2014-09-03 | 2014-12-17 | 洛阳市贝叶机电有限公司 | Permanent magnet coreless brushless motor |
| CN104218762A (en) * | 2014-09-26 | 2014-12-17 | 洛阳市贝叶机电有限公司 | Mounting structure of rotor and stator of permanent magnet iron-core-free motor |
| CN109419397A (en) * | 2017-08-31 | 2019-03-05 | 佛山市顺德区美的电热电器制造有限公司 | DPU disk pack unit, stirring cutter and food processor |
| CN109768646A (en) * | 2019-03-12 | 2019-05-17 | 清华大学苏州汽车研究院（吴江） | A kind of hub motor based on magnetism-collected structure rotor axial magnetic field |
| CN110994842A (en) * | 2019-12-24 | 2020-04-10 | 武汉万至达智能科技有限公司 | High-performance permanent magnet brushless motor with internal magnetism gathering characteristic |
| CN112693553A (en) * | 2021-01-25 | 2021-04-23 | 苏州诺雅电动车有限公司 | Energy storage flywheel balance driving type scooter |
-
2010
- 2010-09-17 CN CN2010205319097U patent/CN201846141U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218758A (en) * | 2014-09-03 | 2014-12-17 | 洛阳市贝叶机电有限公司 | Permanent magnet coreless brushless motor |
| CN104218762A (en) * | 2014-09-26 | 2014-12-17 | 洛阳市贝叶机电有限公司 | Mounting structure of rotor and stator of permanent magnet iron-core-free motor |
| CN109419397A (en) * | 2017-08-31 | 2019-03-05 | 佛山市顺德区美的电热电器制造有限公司 | DPU disk pack unit, stirring cutter and food processor |
| CN109768646A (en) * | 2019-03-12 | 2019-05-17 | 清华大学苏州汽车研究院（吴江） | A kind of hub motor based on magnetism-collected structure rotor axial magnetic field |
| CN109768646B (en) * | 2019-03-12 | 2024-03-19 | 清华大学苏州汽车研究院（吴江） | Hub motor based on magnetic focusing structure rotor axial magnetic field |
| CN110994842A (en) * | 2019-12-24 | 2020-04-10 | 武汉万至达智能科技有限公司 | High-performance permanent magnet brushless motor with internal magnetism gathering characteristic |
| CN112693553A (en) * | 2021-01-25 | 2021-04-23 | 苏州诺雅电动车有限公司 | Energy storage flywheel balance driving type scooter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20110917 |