CN2882087Y - Automatic variable speed DC motor - Google Patents
Automatic variable speed DC motor Download PDFInfo
- Publication number
- CN2882087Y CN2882087Y CN 200620079804 CN200620079804U CN2882087Y CN 2882087 Y CN2882087 Y CN 2882087Y CN 200620079804 CN200620079804 CN 200620079804 CN 200620079804 U CN200620079804 U CN 200620079804U CN 2882087 Y CN2882087 Y CN 2882087Y
- Authority
- CN
- China
- Prior art keywords
- motor
- way clutch
- rotor
- speed
- planetary reduction
- 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
Links
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model relates to an automatic speed-changing DC motor, which comprises a through mandrel, a fixing rack and a motor casing arranged on the through mandrel. In the casing, an outer rotor, an inner rotor, a planetary reduction gear and a one-way clutch are placed. As the motor is provided with double rotors and constitutes a planetary reduction system jointly with the planetary reduction gear, it is possible to adjust the output speed and torque of the motor by changing CW and CCW rotation of the motor. As the back EMF and the swinging-hammer position of the motor is directly relative with the speed of the motor, the swinging hammer and the back EMF of the motor can be used to automatically change the output speed and torque of the motor.
Description
Technical field:
The utility model is applicable to electric bicycle and the bigger electrical equipment of various load variations.
Background technology:
Domestic existing electric bicycle motor is when load sharply increases, and current of electric is bigger, and power consumption is more, and external gearbox designs complexity should not be promoted.
Summary of the invention:
The purpose of this utility model is to provide a kind of electric bicycle direct current machine that can adjust output torque and output speed according to load variations automatically.
For achieving the above object, the design that the utility model adopts is: inside and outside two rotors of design of electrical motor, and constitute deceleration system jointly with planetary gear.Be characterized in: inside and outside two rotors are connected on the fixed mount by one-way clutch respectively, and simultaneously inside and outside rotor constitutes planetary reduction systems jointly as gear ring and sun gear and planetary gear respectively.Planetary reduction systems links together through one-way clutch and motor housing, by the motor housing outputting power.When internal rotor was exported as driving wheel, speed reducing ratio was bigger, and when external rotor was exported as driving wheel, speed reducing ratio was less.Be provided with the one-way clutch that gets rid of hammer control between motor outer rotor and the motor housing.
Another characteristics of the present utility model are: brushless motor controller and motor internal rotor design together, and controller inside is provided with the winding back emf testing circuit.By carbon brush and slip ring is its power supply.Therefore internal rotor promptly can also can be used as motor stator as rotor.
Description of drawings:
Fig. 1 is a fluid drive DC motor profile
1. logical axle, 2. motor housing, 3. fixed mount, 4. external rotor, 5. internal rotor, 6. power supply lead wire, 7. carbon brush, 8. one-way clutch (8), 9. one-way clutch (9), 10. planetary gear, 11. one-way clutch (11), 12. get rid of hammer, 13. one-way clutch (13), 14. brushless motor controllers, 15. slip rings, 16. gear ring, 17. sun gears
Embodiment:
Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are described in further detail.
Motor leads to axle (1) and is installed in behind the electric bicycle in the chain stay, and motor is when initial operation, and external rotor (4) is locked on the fixed mount (3) by unidirectional clutch (8).Internal rotor (5) rotates forward, and by motor housing (2) outputting power, this moment, the motor output speed was minimum through one-way clutch (11) for drive planetary gear (10).
Raising along with motor speed, when winding back emf rises to certain value, brushless motor controller (14) phase modulation, motor internal rotor (5) is locked on the fixed mount (3) by unidirectional clutch (9), one-way clutch (8) separation external rotor (4) rotates forward and drives planetary gear (10) simultaneously, and motor housing (2) output speed is further improved.
When external rotor (4) rotating speed is elevated to getting rid of hammer (12) when throwing away, one-way clutch (13) locking, one-way clutch (11) separates, and makes motor housing (2) and external rotor (4) rotation synchronously, and at this moment the motor output speed is the highest.
When load increased, motor housing (2) rotating speed descended, and gets rid of hammer (12) return, and one-way clutch (13) separates one-way clutch (11) locking simultaneously, and the motor output torque increases.
When load continued to increase, motor speed also continued to descend, and winding back emf decreases, at this moment brushless motor controller (14) phase modulation, external rotor (4) is by unidirectional clutch (8) locking, and one-way clutch (9) separates simultaneously, internal rotor (5) rotates forward, at this moment motor output torque maximum.
Claims (1)
1, fluid drive DC motor, comprise rotor, planetary reduction systems, fixed mount, motor housing and logical axle, it is characterized in that motor is provided with inside and outside two rotors, and two rotors are stator each other, be respectively equipped with one-way clutch between external rotor (4) and internal rotor (5) and the fixed mount (3), be provided with the one-way clutch (13) that gets rid of hammer control between motor housing (2) and the external rotor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620079804 CN2882087Y (en) | 2006-01-04 | 2006-01-04 | Automatic variable speed DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620079804 CN2882087Y (en) | 2006-01-04 | 2006-01-04 | Automatic variable speed DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2882087Y true CN2882087Y (en) | 2007-03-21 |
Family
ID=37881929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620079804 Expired - Fee Related CN2882087Y (en) | 2006-01-04 | 2006-01-04 | Automatic variable speed DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2882087Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390528A (en) * | 2018-03-30 | 2018-08-10 | 马亚静 | A kind of more gear automatic shifting hub for electric vehicle motors |
| CN113879102A (en) * | 2021-10-28 | 2022-01-04 | 池洪 | Birotor motor and hybrid electric vehicle comprising same |
-
2006
- 2006-01-04 CN CN 200620079804 patent/CN2882087Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390528A (en) * | 2018-03-30 | 2018-08-10 | 马亚静 | A kind of more gear automatic shifting hub for electric vehicle motors |
| CN113879102A (en) * | 2021-10-28 | 2022-01-04 | 池洪 | Birotor motor and hybrid electric vehicle comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070321 |