CN202260720U - Permanent magnet rotor for direct current brushless motor - Google Patents
Permanent magnet rotor for direct current brushless motor Download PDFInfo
- Publication number
- CN202260720U CN202260720U CN2011203784811U CN201120378481U CN202260720U CN 202260720 U CN202260720 U CN 202260720U CN 2011203784811 U CN2011203784811 U CN 2011203784811U CN 201120378481 U CN201120378481 U CN 201120378481U CN 202260720 U CN202260720 U CN 202260720U
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- rotor
- steel seat
- brushless motor
- permanent magnets
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a rotor, in particular to a permanent magnet rotor for a direct current brushless motor. The permanent magnet rotor for the direct current brushless motor comprises a rotor shaft on which a magnetic steel seat is arranged, wherein the magnetic steel seat is cylindrical; and permanent magnets are arranged on the outer periphery of the magnetic steel seat. Stress on the permanent magnets on the rotor of the motor is decreased, the volume of each permanent magnet is maximally decreased, the permanent magnets are firmer on the rotor, and the using cost of the permanent magnets is saved. The permanent magnets are fixed on the magnetic steel seat through bolts, so that the permanent magnets are more firmly combined with the magnetic steel seat, and the problem of drop of the permanent magnets on the high-power brushless motor is completely solved.
Description
Technical field
The utility model relates to a kind of rotor, relates in particular to a kind of p-m rotor of high power DC brushless electric machine.
Background technology
The high power DC brushless electric machine generally adopts p-m rotor and stator to form at present, and p-m rotor inserted the internal rotor that many laminated steel sheets are formed with some blocks of excitatory permanent magnets in the past.Adopt this structure, the frictional force of permanent magnet and rotor mounting is very big, and its power that is pressed into permanent magnet requires very big, causes the damage of permanent magnet easily, therefore makes product percent defective height and is not suitable for production in enormous quantities.The magnetic line of force of edge permanent magnet concentrated on along direction of rotation and departed from the position of magnetic pole piece Zhou Zhongxin in the past, so the induced potential that the magnetic line of force produces is more Zao than permanent magnet position, and its problem is to have changed the stator excitation time, thereby caused the motor operation not steady.Because high-power permanent magnet motor output torque is bigger, corresponding permanent magnet is stressed also to be directly proportional, and makes permanent magnet come off easily, through the magnetic energy product of test permanent magnet with its volume reduce successively decrease downwards from maximum magnetic energy product.
Summary of the invention
In order solve the problems of the technologies described above the utility model a kind of p-m rotor of dc brushless motor, purpose to be provided is to solve permanent magnet difficult installation, the use cost of effectively having saved permanent magnet.
For reaching the p-m rotor of above-mentioned purpose the utility model dc brushless motor, comprise rotor, rotor is provided with magnet steel seat, and magnet steel seat is cylindrical, on the excircle of magnet steel seat, is provided with permanent magnet.
Described permanent magnet is evenly distributed on the excircle of magnet steel seat.
Described permanent magnet is screwed on magnet steel seat.
The utility model has the advantages of: magnet steel seat excircle edge permanent magnet, through reducing the permanent magnet volume, thereby make the rotor field more even, more approach square wave, the motor operation is more steady, more energy-conservation.The magnetic line of force of the utility model permanent magnet is positioned at the position that magnetic pole of the stator sets all the time, can correctly detect the position of rotor.The utility model reduces permanent magnet stressed on rotor, has reduced the volume of permanent magnet to the full extent, makes permanent magnet more firm on rotor, and the use cost of having practiced thrift permanent magnet.Permanent magnet is screwed on magnet steel seat, makes more firm the combining with magnet steel seat of permanent magnet, has thoroughly solved the problem that the high-power brushless motor permanent magnet comes off.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is that magnet steel seat is connected sketch map with permanent magnet.
Among the figure: 1, magnet steel seat; 2, armature spindle; 3, permanent magnet.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
The p-m rotor of the utility model dc brushless motor as shown in the figure comprises armature spindle 2, and armature spindle 2 is provided with magnet steel seat 1, and magnet steel seat 1 is cylindrical, on the excircle of magnet steel seat 1, is provided with permanent magnet 3.Permanent magnet 3 is evenly distributed on the excircle of magnet steel seat 2.Permanent magnet 3 is screwed on magnet steel seat 1.
Claims (3)
1. the p-m rotor of dc brushless motor comprises rotor, it is characterized in that rotor is provided with magnet steel seat, and magnet steel seat is cylindrical, on the excircle of magnet steel seat, is provided with permanent magnet.
2. the p-m rotor of dc brushless motor according to claim 1 is characterized in that described permanent magnet is evenly distributed on the excircle of magnet steel seat.
3. the p-m rotor of dc brushless motor according to claim 1 and 2 is characterized in that described permanent magnet is screwed on magnet steel seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203784811U CN202260720U (en) | 2011-10-09 | 2011-10-09 | Permanent magnet rotor for direct current brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203784811U CN202260720U (en) | 2011-10-09 | 2011-10-09 | Permanent magnet rotor for direct current brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202260720U true CN202260720U (en) | 2012-05-30 |
Family
ID=46121903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203784811U Expired - Fee Related CN202260720U (en) | 2011-10-09 | 2011-10-09 | Permanent magnet rotor for direct current brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202260720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226857A (en) * | 2014-06-06 | 2016-01-06 | 程丹秀 | Permanent-magnet brushless DC electric machine rotor |
-
2011
- 2011-10-09 CN CN2011203784811U patent/CN202260720U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226857A (en) * | 2014-06-06 | 2016-01-06 | 程丹秀 | Permanent-magnet brushless DC electric machine rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160122 Address after: 7 gate 3, 110042 Union Road, Dadong District, Liaoning, Shenyang Patentee after: Shenyang Haolingda New Technology Research Institute Co., Ltd. Address before: 7 gate 3, 110042 Union Road, Dadong District, Liaoning, Shenyang Patentee before: Shenyang Boyuan Special Equipment Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20201009 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |