CN201323479Y - Brushless permanent magnet motor rotor - Google Patents
Brushless permanent magnet motor rotor Download PDFInfo
- Publication number
- CN201323479Y CN201323479Y CNU2008203029410U CN200820302941U CN201323479Y CN 201323479 Y CN201323479 Y CN 201323479Y CN U2008203029410 U CNU2008203029410 U CN U2008203029410U CN 200820302941 U CN200820302941 U CN 200820302941U CN 201323479 Y CN201323479 Y CN 201323479Y
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- rotor
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Abstract
The utility model discloses a brushless permanent magnet motor rotor, which comprises a rotor lamination arranged on an output shaft. Bar magnetic steels are arranged around the rotor lamination. A hole which is embedded with bar magnetic steels in the rotor lamination is filled with non-magnetic auxiliary fillers. Besides, the auxiliary fillers are filled in the hole gaps at both ends of the bar magnetic steels. The circular arc with a full diameter of the hole (the inner side of the magnetic bridge) and the external circle of the rotor are concentric. The structure of the utility model can ensure the equal distribution of the inner stress of the motor rotor and avoid the concentration of the stress of the rotor; in addition, under the guarantee of all advantages of the embedded magnetic-steel rotors, the utilization ratio of the magnetic steel and the intensity of the rotor are improved. Consequently, compared with the prior art, the utility model has the advantages of high rigidity and intensity, low magnetic leakage coefficient and high utilization ratio of the magnetic steels. The rotor is particularly applicable to high-rotating speed motor with small polar distance.
Description
Technical field
The utility model relates to a kind of brushless permanent magnet motor rotor, belongs to technical field of motors.
Background technology
The rotor magnetic circuit structural of brushless electric machine mainly contains surface-mount type, built-in (embedding) magnet steel formula, tangential magnetic circuit formula etc. at present.Relative other magnetic structures wherein, advantage such as it is simple that built-in (embedding) magnet steel formula rotor magnetic circuit structural has structural manufacturing process, and the cost of material is low, the machine operation characteristic is good and control mode is flexible.But magnetic bridge must be set preventing excessive leakage field in built-in (embedding) magnet steel formula rotor magnetic circuit structural, and the intensity of magnetic bridge place silicon steel sheet has limited in less pole span size or higher rotation speed motor and has used.Its built-in (embedding) magnet steel formula rotor magnetic circuit structural generally adopts the mode of build-in bar magnet around motor rotor punching sheet.Tang appoints academician far away the built-in magnet steel rotor structure of above-mentioned tradition to be done the description of comparatively concentrating in " the theoretical and design of modern magneto " of being published by China Machine Press in 1997.Because the technical scheme of this traditional approach must be opened the build-in bar magnet on rotor punching square groove hole, and after bar magnet is mounted in this square groove hole, between the two ends of bar magnet and square groove hole, all leave certain space, because the existence in this space, and be easy to occur stress in each corner in square groove hole and concentrate, make the rigidity and the intensity of whole rotor reduce greatly, can't under higher rotation speed, move, influenced the serviceability of motor.In order to improve intensity, must be with the thickening of rotor punching magnetic bridge, but this has increased rotor leakage again, reduce the magnet steel utilance or reduced the service behaviour of motor.Therefore the result of use of existing brushless permanent magnet motor rotor still is not ideal enough.
The utility model content
The utility model purpose is: provide a kind of rigidity and magnetic leakage factor relative less brushless permanent magnet motor rotor higher with intensity, to overcome the deficiencies in the prior art.
The utility model is to constitute like this: the utility model comprises the rotor punching that is installed on the output shaft, around rotor punching, be embedded with bar magnet, in the hole of rotor punching build-in bar magnet, be filled with the auxiliary filler that non-magnet_conductible material is formed, and auxiliary filler is filled in the space, hole at bar magnet two ends.
Two ends in the hole of rotor punching build-in bar magnet are respectively equipped with the arcuate socket that passes through connection with the hole of build-in bar magnet mutually, and the center of circle of the large diameter circular arc of this arcuate socket is concentric with the cylindrical center of circle of rotor punching, and auxiliary filler is filled in this arcuate socket.
Auxiliary filler is non-magnetic metal, plastics or epoxide resin material.
Owing to adopted technique scheme, the utility model is after rotor is put the auxiliary filler filling of using non-magnet material every magnetic potential, and the magnetic circuit that not only can not influence rotor distributes, and makes rotor magnetic bridge position evenly stressed, avoid shear stress, therefore effectively improved rotor structure intensity; In addition, the filling shape ragged edge that the utility model is in the auxiliary filler at bar magnet two ends is the circular arc concentric with the rotor cylindrical, this had both guaranteed that the magnetic bridge size was even, avoided the stress of magnetic bridge itself to concentrate again, but also can effectively improve the magnetic resistance of magnetic bridge, reach better every the magnetic effect.Therefore, adopt structure of the present utility model, the rotor uniform internal stress is distributed, avoid the stress of rotor to concentrate; And under the prerequisite that keeps the every advantage of built-in (embedding) magnet steel formula rotor structure, improve magnet steel utilance and rotor strength simultaneously.So the utility model compared with prior art the utlity model has rigidity and intensity height, long service life, magnetic leakage factor is little, the advantage that the magnet steel utilance is high.The utility model is particularly suitable for using on the pot motor of less pole span size.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the schematic diagram of the utility model V-shape structure bar magnet rotor.
Description of reference numerals: 1-rotor punching, 2-bar magnet, the auxiliary filler of 3-, 4-output shaft, 5-large diameter circular arc (being the magnetic bridge inner edge).
Embodiment
The utility model is described in further detail below in conjunction with embodiment, but not as to restriction of the present utility model.
Embodiment of the present utility model: when making the brushless permanent magnet motor rotor, the rotor punching 1 that is installed on the output shaft 4 is first by traditional mode bar magnet 2 on build-in around the rotor punching 1, when making the hole of build-in bar magnet 2, the arcuate socket that passes through connection with the hole of build-in bar magnet 2 is mutually produced at two ends in this hole respectively, and the center of circle of the large diameter circular arc 5 of this arcuate socket is made into the cylindrical center of circle of rotor punching 1 concentric, being filled in build-in with non-magnetic auxiliary filler 3 then has in the arcuate socket at two ends of bar magnet 2.Auxiliary filler 3 can adopt non-magnetic metal, plastics or epoxide resin material, and when filling, and will assist filler to add that bonded adhesives fills together.
Claims (3)
1. brushless permanent magnet motor rotor, comprise the rotor punching (1) that is installed on the output shaft (4), around rotor punching (1), be embedded with bar magnet (2), it is characterized in that: in the hole of rotor punching (1) build-in bar magnet (2), be filled with the auxiliary filler (3) that non-magnet_conductible material is formed, and auxiliary filler (3) is filled in the space, hole at bar magnet (2) two ends.
2. brushless permanent magnet motor rotor according to claim 1, it is characterized in that: be respectively equipped with the hole of build-in bar magnet (2) at the two ends in the hole of rotor punching (1) build-in bar magnet (2) and pass through the arcuate socket of connection mutually, and the center of circle of the large diameter circular arc of this arcuate socket (5) is concentric with the cylindrical center of circle of rotor punching (1), and auxiliary filler (3) is filled in this arcuate socket.
3. brushless permanent magnet motor rotor according to claim 1 and 2 is characterized in that: auxiliary filler (3) is non-magnetic metal, plastics or epoxide resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203029410U CN201323479Y (en) | 2008-11-26 | 2008-11-26 | Brushless permanent magnet motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203029410U CN201323479Y (en) | 2008-11-26 | 2008-11-26 | Brushless permanent magnet motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201323479Y true CN201323479Y (en) | 2009-10-07 |
Family
ID=41160851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203029410U Expired - Fee Related CN201323479Y (en) | 2008-11-26 | 2008-11-26 | Brushless permanent magnet motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201323479Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105027391A (en) * | 2013-03-25 | 2015-11-04 | 松下知识产权经营株式会社 | Permanent-magnet-embedded electric motor and method for manufacturing same |
| CN110165806A (en) * | 2019-05-21 | 2019-08-23 | 日本电产凯宇汽车电器（江苏）有限公司 | A kind of brake system permanent magnetic brushless rotor core structure |
| CN112350476A (en) * | 2020-09-29 | 2021-02-09 | 西门子电动汽车动力总成系统(上海)有限公司 | Motor part, motor and motor vehicle |
-
2008
- 2008-11-26 CN CNU2008203029410U patent/CN201323479Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105027391A (en) * | 2013-03-25 | 2015-11-04 | 松下知识产权经营株式会社 | Permanent-magnet-embedded electric motor and method for manufacturing same |
| CN105027391B (en) * | 2013-03-25 | 2019-02-01 | 松下知识产权经营株式会社 | Permanent magnetic baried type motor and its manufacturing method |
| CN110165806A (en) * | 2019-05-21 | 2019-08-23 | 日本电产凯宇汽车电器（江苏）有限公司 | A kind of brake system permanent magnetic brushless rotor core structure |
| CN112350476A (en) * | 2020-09-29 | 2021-02-09 | 西门子电动汽车动力总成系统(上海)有限公司 | Motor part, motor and motor vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091007 Termination date: 20161126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |