CN102104296A - Radiating structure for outer-rotor direct-current brushless motor - Google Patents
Radiating structure for outer-rotor direct-current brushless motor Download PDFInfo
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- CN102104296A CN102104296A CN2009102139018A CN200910213901A CN102104296A CN 102104296 A CN102104296 A CN 102104296A CN 2009102139018 A CN2009102139018 A CN 2009102139018A CN 200910213901 A CN200910213901 A CN 200910213901A CN 102104296 A CN102104296 A CN 102104296A
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- radiating
- boss
- stator
- wall
- brushless motor
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Abstract
The invention discloses a radiating structure for an outer-rotor direct-current brushless motor. In the radiating structure, a radiating boss is machined on the inner wall of a stator protective end cover; the plane of the boss is in insulative close contact with a radiating plane of an electronic element on a direct-current electric control circuit board; and a groove is reserved on the outer wall, corresponding to the position of the boss, of the stator protective end cover. Because an original radiating bracket installation position of the electronic element is changed to the boss of the inner wall of the stator protective end cover from a stator bearing bracket, the radiating boss of the electronic element is far away from a stator winding heating source, and the stator winding heating source is prevented from diffusing and transferring directly through the stator bearing bracket in a split structure mode; and because the radiating groove is reserved on the outer wall of the radiating boss, on one hand, a radiating effect is improved by increasing a radiating area, on the other hand, the rigidity of a shell of a product is improved and material cost is saved. The radiating structure has high radiating efficiency, high rigidity and low production cost, and is suitable to be used in various outer-rotor direct-current brushless motors.
Description
Technical field
The present invention relates to a kind of external rotor DC Brushless Motor, especially a kind of external rotor DC Brushless Motor radiator structure.
Background technology
In the prior art, the heat dissipating method of the electronic component on the built-in dc controlled wiring board of external rotor DC Brushless Motor, be to be shaped on cooling stand at stator support of bearing inside casing, the heat radiation plane of electronic component closely is mounted on the cooling stand plane with insulation mode, thereby the heat that sends during with the electronic component working condition, be delivered to the stator support of bearing by cooling stand, pass through the stator support of bearing then to extraneous air-dispersion transmission, reach the heat radiation purpose, yet, because the stator support of bearing itself is fixed with stator winding, during the machine operation situation, the inevitable heat that also produces of stator winding coil, this stator winding heat and dc controlled wiring board electronic component heat rely on the mode of stator support of bearing heat radiation simultaneously, cause dc controlled wiring board electronic element radiating effect insufficient, thereby influence the normal operating conditions and the life-span of electronic component, this is need be improved.
Summary of the invention
The technical problem to be solved in the present invention provides and a kind ofly can improve dc controlled wiring board electronic element radiating effect, can guarantee the external rotor DC Brushless Motor radiator structure in electronic component normal operating conditions and life-span.
The present invention includes the stator support of bearing; the dc controlled wiring board of charged sub-element; stator protection end cap and external rotor assembly; at the integrated boss that is shaped on of stator protection end cap inwall; the heat radiation plane of electronic component becomes insulation closely to contact on boss plane and the dc controlled wiring board, is shaped on groove in the corresponding lug boss position of stator protection end cap outer wall.Owing to adopt the heat radiation boss that is provided with at stator protection end cap inwall away from stator winding; and become split combination structure with the stator support of bearing that installs stator winding; thereby intercepted the stator winding thermal source to the utmost to heat radiation boss diffusion transmission; improved the radiating effect of heat radiation boss to electronic component; and be shaped on groove in the corresponding lug boss position of stator protection end cap outer wall; strengthened the outer wall efficiently radiates heat area of heat radiation boss on the one hand; improved radiating effect; on the other hand; meet the manufacturing technique requirent of stator protection end cap integral die-cast aluminium, not only can save material cost but also can eliminate the stress influence that die casting aluminum component boss wall thickness variation is produced.This structure has the radiating effect excellence, and production cost is low, and advantages of high strength is adapted at adopting in the various external rotor DC Brushless Motor.
Description of drawings
Fig. 1 is the overall structure cut-away view of the embodiment of the invention;
Fig. 2 is the stator protection end cap outside drawing of the embodiment of the invention.
Embodiment
Visit Fig. 1 and Fig. 2; the present invention includes the stator support of bearing 1; the dc controlled wiring board 3 of charged sub-element 5; stator protection end cap 2 and external rotor assembly 8; at the integrated boss 4 that is shaped on of stator protection end cap 2 inwalls; 6 one-tenth insulations in heat radiation plane of electronic component 5 on boss 4 planes and the dc controlled wiring board 3 closely contact, and are shaped on groove 7 in the corresponding lug boss position of stator protection end cap 2 outer walls.
Claims (1)
1. external rotor DC Brushless Motor radiator structure; it comprises the stator support of bearing; the stream automatically controlled circuit board of charged sub-element; stator protection end cap and external rotor assembly; it is characterized in that: at the integrated boss that is shaped on of stator protection end cap inwall; the heat radiation plane of electronic component becomes insulation closely to contact on boss plane and the dc controlled wiring board, is shaped on groove in the corresponding lug boss position of stator protection end cap outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102139018A CN102104296A (en) | 2009-12-16 | 2009-12-16 | Radiating structure for outer-rotor direct-current brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102139018A CN102104296A (en) | 2009-12-16 | 2009-12-16 | Radiating structure for outer-rotor direct-current brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102104296A true CN102104296A (en) | 2011-06-22 |
Family
ID=44156881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102139018A Pending CN102104296A (en) | 2009-12-16 | 2009-12-16 | Radiating structure for outer-rotor direct-current brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102104296A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570684A (en) * | 2012-02-06 | 2012-07-11 | 无锡江南奕帆电力传动科技股份有限公司 | End cover and electric brush holder assembly device for rotary motor |
| CN104009606A (en) * | 2014-03-18 | 2014-08-27 | 昆山航天林泉电机有限公司 | Integrated brushless direct current motor device for scooter |
| CN106256074A (en) * | 2014-03-20 | 2016-12-21 | 施乐百欧洲公司 | Motor, especially outer rotor motor and the Intermediate insulator for motor |
| CN108964363A (en) * | 2017-05-17 | 2018-12-07 | 德昌电机(深圳)有限公司 | A kind of engine cooling mould group of motor, the control circuit board and application motor |
| CN110867997A (en) * | 2019-11-27 | 2020-03-06 | 合肥凯邦电机有限公司 | End cover and motor |
| CN113452203A (en) * | 2020-03-25 | 2021-09-28 | 车王电子股份有限公司 | Brushless motor assembly |
| US11770051B2 (en) | 2020-03-19 | 2023-09-26 | Mobiletron Electronics Co., Ltd. | Brushless motor assembly |
-
2009
- 2009-12-16 CN CN2009102139018A patent/CN102104296A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570684A (en) * | 2012-02-06 | 2012-07-11 | 无锡江南奕帆电力传动科技股份有限公司 | End cover and electric brush holder assembly device for rotary motor |
| CN102570684B (en) * | 2012-02-06 | 2015-05-06 | 无锡江南奕帆电力传动科技股份有限公司 | End cover and electric brush holder assembly device for rotary motor |
| CN104009606A (en) * | 2014-03-18 | 2014-08-27 | 昆山航天林泉电机有限公司 | Integrated brushless direct current motor device for scooter |
| CN106256074A (en) * | 2014-03-20 | 2016-12-21 | 施乐百欧洲公司 | Motor, especially outer rotor motor and the Intermediate insulator for motor |
| CN108964363A (en) * | 2017-05-17 | 2018-12-07 | 德昌电机(深圳)有限公司 | A kind of engine cooling mould group of motor, the control circuit board and application motor |
| CN110867997A (en) * | 2019-11-27 | 2020-03-06 | 合肥凯邦电机有限公司 | End cover and motor |
| US11770051B2 (en) | 2020-03-19 | 2023-09-26 | Mobiletron Electronics Co., Ltd. | Brushless motor assembly |
| CN113452203A (en) * | 2020-03-25 | 2021-09-28 | 车王电子股份有限公司 | Brushless motor assembly |
| CN113452203B (en) * | 2020-03-25 | 2023-08-15 | 车王电子股份有限公司 | Brushless motor assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110622 |