CN201234178Y - Rotor of outer rotor permanent magnet brushless DC motor - Google Patents
Rotor of outer rotor permanent magnet brushless DC motor Download PDFInfo
- Publication number
- CN201234178Y CN201234178Y CNU2008200994360U CN200820099436U CN201234178Y CN 201234178 Y CN201234178 Y CN 201234178Y CN U2008200994360 U CNU2008200994360 U CN U2008200994360U CN 200820099436 U CN200820099436 U CN 200820099436U CN 201234178 Y CN201234178 Y CN 201234178Y
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- CN
- China
- Prior art keywords
- rotor
- motor
- permanent magnet
- axle
- rotor case
- 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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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model relates to a rotor of an outer rotor permanent-magnet brushless DC motor, which comprises a rotor casing of a motor and a shaft. The rotor is characterized in that the rotor casing is made of magnetic powders and resin binders through injection molding; and the shaft is fixed in the center of the rotor casing during the injection molding. The rotor has the advantages that since the rotor casing and the shaft are integrated as a whole body through injection molding, and precision injection molds are adopted to control in production, so that the rotor has the advantages of high dimensional precision, uniform air gap, low cost, less procedures, good concentricity of products, and the like.
Description
Technical field
The utility model relates to a kind of rotor of external rotor permanent magnet brshless DC motor.
Background technology
Traditional external rotor dc brushless motor rotor is formed by a plurality of part combine and assemble, usually there are rotor case, magnet ring or magnetic shoe, axle and adhesive to constitute, rotor case is formed by punching press or casting or machine work earlier, then rotor case is gone in axial compression, last magnet ring (or magnetic shoe) is fixed on the rotor case by adhesive; This traditional class rotor production process is many, cost is high, and the easy and rotor case decentraction in back is gone in axial compression, and air gap is inhomogeneous, and magnet ring (or magnetic shoe) and rotor case defectives such as loosening occur easily in conjunction with insecure, influence motor properties and life-span.
The utility model content
The utility model is to overcome the deficiencies in the prior art and the rotor of a kind of dimensional accuracy height, good product consistency, production process is few, cost is low, air gap evenly reaches good concentricity external rotor permanent magnet brshless DC motor is provided.
In order to achieve the above object, the utility model is achieved in that it is a kind of rotor of external rotor permanent magnet brshless DC motor, comprises the rotor case and the axle of motor; It is characterized in that: described rotor case is injection molded with Magnaglo and resin binder, and axle is fixed on the central authorities of rotor case when injection moulding.
Outside described rotor case, be provided with magnetic guiding loop.
Be arranged with axle sleeve at described stiff end with rotor.
The utility model advantage compared with prior art is, because rotor case forms as an integral molded plastic with axle, adopt accurate injection mold to control during production, had the dimensional accuracy height, air gap is even, cost is low, operation is few, advantages such as the good concentricity of product.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is done further detailed description:
As shown in Figure 1, it is a kind of rotor of external rotor permanent magnet brshless DC motor, comprises the rotor case 1 and the axle 3 of motor.Rotor case is injection molded with Magnaglo and resin binder, and axle is fixed on the central authorities of rotor case when injection moulding, thereby has guaranteed the concentricity of itself and rotor case, magnetizes at the length section that requires then.As in small motor, outside rotor case, need not to establish magnetic guiding loop 4; Stiff end at axle and rotor is arranged with axle sleeve 2, thereby strengthens its intensity.
Claims (3)
1, a kind of rotor of external rotor permanent magnet brshless DC motor, comprise motor rotor case and the axle; It is characterized in that: described rotor case (1) is injection molded with Magnaglo and resin binder, and axle (3) is fixed on the central authorities of rotor case when injection moulding.
2, the rotor of external rotor permanent magnet brshless DC motor according to claim 1 is characterized in that: the outer magnetic guiding loop (4) that is provided with of described rotor case (1).
3, the rotor of external rotor permanent magnet brshless DC motor according to claim 1 is characterized in that: the stiff end at described axle (3) and rotor is arranged with axle sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200994360U CN201234178Y (en) | 2008-07-10 | 2008-07-10 | Rotor of outer rotor permanent magnet brushless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200994360U CN201234178Y (en) | 2008-07-10 | 2008-07-10 | Rotor of outer rotor permanent magnet brushless DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201234178Y true CN201234178Y (en) | 2009-05-06 |
Family
ID=40620566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200994360U Expired - Fee Related CN201234178Y (en) | 2008-07-10 | 2008-07-10 | Rotor of outer rotor permanent magnet brushless DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201234178Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105262265A (en) * | 2015-11-13 | 2016-01-20 | 汕头市杰泰电子科技有限公司 | Outer rotor casing of brushless DC motor and manufacturing process thereof |
| WO2016177919A1 (en) * | 2015-05-05 | 2016-11-10 | Soler & Palau Research, S.L. | Rotor for outer rotor brushless electric motor |
-
2008
- 2008-07-10 CN CNU2008200994360U patent/CN201234178Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016177919A1 (en) * | 2015-05-05 | 2016-11-10 | Soler & Palau Research, S.L. | Rotor for outer rotor brushless electric motor |
| CN107534337A (en) * | 2015-05-05 | 2018-01-02 | 索莱尔&帕劳研究公司 | Rotor for outer rotor brushless motor |
| CN105262265A (en) * | 2015-11-13 | 2016-01-20 | 汕头市杰泰电子科技有限公司 | Outer rotor casing of brushless DC motor and manufacturing process thereof |
| CN105262265B (en) * | 2015-11-13 | 2018-08-07 | 汕头市杰泰电子科技有限公司 | A kind of brshless DC motor outer rotor casing and its manufacture craft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG FANS-TECH ELECTRIC CO., LTD. Free format text: FORMER NAME: FANSHIDA ELECTROMECHANICAL CO., LTD.;SHUNDE ZONE;FOSHAN CITY |
|
| CP03 | Change of name, title or address |
Address after: 528300 Guangdong, Foshan, Shunde District, Daliang street, Sha Shun Road, No. five, No. 9, No. two Patentee after: FANS-TECH ELECTRIC CO., LTD. Address before: Keyuan Shunde District of Ronggui high tech Industrial Development Zone, Guangdong province Foshan City Road 528305 No. 8 Patentee before: Foshan Shunde Fans-Tech Electric Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090506 Termination date: 20170710 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |