CN203840099U - Wheel hub used for permanent magnet direct current brushless motor - Google Patents
Wheel hub used for permanent magnet direct current brushless motor Download PDFInfo
- Publication number
- CN203840099U CN203840099U CN201420245677.7U CN201420245677U CN203840099U CN 203840099 U CN203840099 U CN 203840099U CN 201420245677 U CN201420245677 U CN 201420245677U CN 203840099 U CN203840099 U CN 203840099U
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- Prior art keywords
- permanent magnet
- wheel hub
- guiding loop
- magnetic guiding
- permanent
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- Expired - Fee Related
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model provides a wheel hub used for a permanent magnet direct current brushless motor. The wheel hub includes a rim which is used for mounting a tire and is located at the outer circumference as well as a magnetic conduction ring and a plurality of permanent magnets which are located at the inner circumference; the plurality of permanent magnets are arranged at the inner surface of the magnetic conduction ring and are of rectangular plate-shaped structures; a plurality of the bosses are arranged at the inner surface of the magnetic conduction ring along a circumferential direction; the bosses are cuboid-shaped; the width direction or length direction of the bosses are identical with the axial direction of the magnetic conduction ring; and the permanent magnets are embedded between adjacent bosses along the circumferential direction of the magnetic conduction ring. With the wheel hub of the utility model adopted, the accuracy and reliability of the installation positions of the permanent magnets can be improved, and the optimization of the rotor magnetic circuit design of the motor can be facilitated, and the performance and permanent magnet material utilization rate of the motor can be improved.
Description
Technical field
The utility model relates to electric vehicle motor technical field, particularly a kind of wheel hub for non-brush permanent-magnet DC motor of optimizing rotor magnetic circuit structural.
Background technology
Motor is one of core component of electric motor car, and its quality directly affects fail safe, operability, reliability and the life cycle etc. of electric motor car.Therefore, industry is attached great importance to the performance quality of electric vehicle motor.
But at present, there is following shortcoming in the permanent magnet mounting structure in electric vehicle motor:
Two permanent magnets must tightly stick together, and cause designing by optimizing rotor magnetic circuit, carry out lifting motor performance and improve rare earth material utilance.
Magnet size and magnetic guiding loop id tolerance have in a big way, cause the permanent magnet after mounting always to have gap existence not of uniform size, make permanent magnet actual installation position not in theoretical claimed range.
Visible, in current electric vehicle motor, installation site precision and the consistency of permanent magnet are lower, induced electromotive force uniformity and the accuracy of stator are also decreased, cause controller for electric vehicle to export drive waveforms accurately to motor, make motor that abnormal pulsation and noise occur when work.It is more remarkable that this defect can show under sine wave drive pattern.Above-mentioned condition finally can cause that the power performance of electric motor car declines, the comfort level of riding is deteriorated and mileages of continuation reduces, and user uses wish to reduce to electric motor car.
Summary of the invention
The purpose of this utility model is to be provided for the wheel hub of non-brush permanent-magnet DC motor, to solve installation site precision and the lower problem of consistency of the permanent magnet that prior art exists.
In order to address the above problem, the utility model provides following technical scheme:
A kind of wheel hub for non-brush permanent-magnet DC motor, comprise for mounting tyre and be positioned at the wheel rim of excircle, be positioned at magnetic guiding loop and a plurality of permanent magnet of inner periphery, a plurality of described permanent magnets are located at the inner surface of described magnetic guiding loop, and the described permanent magnet platy structure that is rectangle, wherein, the inner surface of described magnetic guiding loop is provided with a plurality of boss along circumferencial direction, described boss is rectangular-shaped, and the Width of described boss or length direction are axially identical with described magnetic guiding loop, described permanent magnet embeds between adjacent described boss along the circumferencial direction of described magnetic guiding loop.
Preferably, described permanent magnet is rare-earth permanent magnet.
Preferably, a plurality of described boss form along the circumferential direction equally distributed two row formula layouts at the inner surface of described magnetic guiding loop.
Preferably, described boss forms by Broaching Technology, to form integral structure with described magnetic guiding loop.
By boss is set, the utility model can improve installation site precision and the reliability of permanent magnet, is convenient to optimize rotor magnetic Circuit Design simultaneously, improves performance and the permanent magnet material utilance of motor.
Accompanying drawing explanation
Fig. 1 is the structural representation that comprises the motor of the utility model embodiment;
Fig. 2 is the structural representation of the utility model embodiment;
Fig. 3 is the structure for amplifying schematic diagram of Fig. 2 Local C;
Fig. 4 is the structural representation that permanent magnet is not set of the utility model embodiment;
Fig. 5 is the structure for amplifying schematic diagram of the local D of Fig. 4.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details.
As shown in Figure 1, electric vehicle motor comprises field frame assembly 2 and rotor assembly 1, and rotor assembly 1 arranges around field frame assembly 2.As shown in Figure 2 and Figure 3, rotor assembly 1 comprises the wheel hub that the utility model embodiment provides, particularly, the wheel hub that the utility model embodiment provides comprises wheel rim 11, magnetic guiding loop 12 and a plurality of permanent magnet 3, excircle is the wheel rim 11 for mounting tyre, magnetic guiding loop 12 is located at inner periphery, and a plurality of permanent magnets 3 are located at the inner surface of magnetic guiding loop 12, and permanent magnet 3 platy structure that is rectangle.In order accurately to determine the position of permanent magnet 3, as Figure 2-Figure 5, the inner surface of magnetic guiding loop 12 is provided with a plurality of boss 4 along circumferencial direction, and boss 4 is rectangular-shaped (certainly, it has certain radian, with consistent with the inner surface of magnetic guiding loop 12).The Width of boss 4 or length direction are axially identical with magnetic guiding loop 12, and permanent magnet 3 embeds between adjacent boss 4 along the circumferencial direction of magnetic guiding loop 12.
Preferably, permanent magnet 3 is rare-earth permanent magnet, and boss 4 and magnetic guiding loop 12 are integrated.More preferably, the face that boss 4 contacts with permanent magnet 3 is basically parallel to magnetic guiding loop 12 at the normal at this place, and the face not contacting with permanent magnet 3 is curved, with the smooth interior surfaces transition of magnetic guiding loop 12.More preferably, the length direction of boss 4 is consistent in the circumferencial direction of magnetic guiding loop 12, and the circumferential width of permanent magnet 3 equals the length of the boss 4 of 5 times.
Further preferably, boss 4 adopts Broaching Technology, goes out to meet width and the distribution angle of design requirement with broaching.And make a plurality of boss 4 along the circumferential direction form equally distributed two row at magnetic guiding loop 12 inner surfaces, the circumferential distance of adjacent two row's boss 4 is W, the width of one boss 4 and with the distance sum with another boss 4 of row be L, certainly, distance W equals the width of permanent magnet 3.Visible, 4 pairs of same permanent magnets 3 of four boss carry out two axial restraints, can guarantee the accuracy requirement of its location.
Distance W and distance L about boss 4 all can be adjusted to optimal state according to rotor Optimize magnetic circult design requirement.
In sum, provide boss is set, permanent magnet is accurately embedded between adjacent lands, the utility model compared with the prior art, can improve installation site precision and the reliability of rare-earth permanent magnet, be convenient to optimize rotor magnetic Circuit Design simultaneously, improve performance and the rare-earth permanent magnet utilance of motor.
As known by the technical knowledge, the utility model can be realized by other the embodiment that does not depart from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, and is not only.All changes within the scope of the utility model or within being equal to scope of the present utility model are all included in the utility model.
Claims (4)
1. the wheel hub for non-brush permanent-magnet DC motor, comprise for mounting tyre and be positioned at the wheel rim of excircle, be positioned at magnetic guiding loop and a plurality of permanent magnet of inner periphery, a plurality of described permanent magnets are located at the inner surface of described magnetic guiding loop, and the described permanent magnet platy structure that is rectangle, it is characterized in that, the inner surface of described magnetic guiding loop is provided with a plurality of boss along circumferencial direction, described boss is rectangular-shaped, and the Width of described boss or length direction are axially identical with described magnetic guiding loop, described permanent magnet embeds between adjacent described boss along the circumferencial direction of described magnetic guiding loop.
2. the wheel hub for non-brush permanent-magnet DC motor according to claim 1, is characterized in that, described permanent magnet is rare-earth permanent magnet.
3. the wheel hub for non-brush permanent-magnet DC motor according to claim 1, is characterized in that, a plurality of described boss form along the circumferential direction equally distributed two row formula layouts at the inner surface of described magnetic guiding loop.
4. the wheel hub for non-brush permanent-magnet DC motor according to claim 1, is characterized in that, described boss forms by Broaching Technology, to form integral structure with described magnetic guiding loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420245677.7U CN203840099U (en) | 2014-05-14 | 2014-05-14 | Wheel hub used for permanent magnet direct current brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420245677.7U CN203840099U (en) | 2014-05-14 | 2014-05-14 | Wheel hub used for permanent magnet direct current brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203840099U true CN203840099U (en) | 2014-09-17 |
Family
ID=51517894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420245677.7U Expired - Fee Related CN203840099U (en) | 2014-05-14 | 2014-05-14 | Wheel hub used for permanent magnet direct current brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203840099U (en) |
-
2014
- 2014-05-14 CN CN201420245677.7U patent/CN203840099U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Wheel hub used for permanent magnet direct current brushless motor Effective date of registration: 20160719 Granted publication date: 20140917 Pledgee: Industrial Commercial Bank of China Ltd. Taizhou Huangyan branch Pledgor: TAIZHOU JINYU ELECTROMECHANICAL Co.,Ltd. Registration number: 2016330000047 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |