CN2402050Y - Intermediate set coaxial driving assembly of iron core free motor for electricity driven bicycle - Google Patents
Intermediate set coaxial driving assembly of iron core free motor for electricity driven bicycle Download PDFInfo
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- CN2402050Y CN2402050Y CN 99256828 CN99256828U CN2402050Y CN 2402050 Y CN2402050 Y CN 2402050Y CN 99256828 CN99256828 CN 99256828 CN 99256828 U CN99256828 U CN 99256828U CN 2402050 Y CN2402050 Y CN 2402050Y
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- gear
- utility
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- eccentric shaft
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Abstract
The utility model relates to an intermediate set coaxial driving device of an iron core free motor, which is the driving device for electric bicycles and has the advantages of simple structure, strong climbing ability and comfortable and stable riding. The utility model comprises a central shaft, an eccentric shaft, a driving gear, a gear ring, a chain wheel and a chain, wherein, both ends of the central shaft are connected with the pedal of the bicycle and are sheathed and connected with the eccentric shaft in parallel, the eccentric shaft is connected with the driving gear which is connected with the gear ring by an inverse differential teeth reducing mechanism, and the gear ring is connected with the chain by the chain wheel. Because of the simple structure of the reducing mechanism of the utility model, the utility model has the advantages of smaller energy consumption on the workpiece friction in operation, more complete force transference, strong climbing ability and more comfortable and stable riding.
Description
The utility model relates to a kind of drive unit of electric bicycle.The mid-Driven by Coaxial device of particularly a kind of iron-core less motor.
At present, the drive unit of electric bicycle adopts electric wheel hub to drive more.Deceleration device wherein, the employing reductor that has, the employing torque motor that has, middle drives assembly and adopts the cylindrical gear reducer structure more.These drive assembly and exist two difficulties that are difficult to overcome, the electric bicycle climbing capacity that is the hub-type driving is poor, driving mechanism about no-load current 0.7A after tested, under the 75KG load, when upwards travelling on 14 ° of slopes, operating current reaches 32A, the 6-7 that is about rated current doubly, obviously, the working condition of motor and controller seriously overloads, and very easily causes damage.And mechanism's complexity costs an arm and a leg, and is unfavorable for that electric bicycle is popularized and the development of electric bicycle industry.
The utility model aims to provide a kind of simple in structure, and climbing capacity is strong, the drive unit of comfortable, the stable electric bicycle of riding.
Central shaft of the present utility model, promptly motor reel is coaxial with the axis of bicycle, is positioned at the below at bicycle middle part, is connected with chain with the trailing wheel of bicycle.The utility model comprises central shaft, eccentric shaft, driving gear, gear ring, sprocket wheel, chain.Wherein, the pedal of central shaft (being motor reel) two ends and bicycle links, and the connection of parallel socket with eccentric shaft, and eccentric shaft links to each other with driving gear, and driving gear links to each other with reverse poor tooth reducing gear with gear ring, and gear ring links to each other with chain with sprocket wheel.As Fig. 1, shown in Figure 2.
Fig. 1 is a schematic diagram of the present utility model,
Fig. 2 is the schematic diagram of reverse poor tooth reducing gear,
Fig. 3 is the schematic diagram of eccentric shaft.
Among the figure:
The 1-central shaft, the 2-eccentric shaft, the 3-driving gear,
The 4-gear ring.
After the battery via controller energising of electric bicycle started, electric current namely distributed supply In magnetic field, coil rotor begins to rotate, and rotates thereby drive eccentric shaft, and eccentric shaft centers on Central shaft is made circular motion, and the driving gear that is connected on the eccentric shaft namely rotates synchronously. Gear ring be diameter greater than the anti-gear of driving gear, when driving gear rotates in gear ring, Because different, the number of teeth difference of diameter of driving gear and gear ring is at driving gear and gear ring Consist of reverse poor tooth reducing gear, with the torque deceleration force amplifier of driving shaft be delivered to gear ring On, gear ring is the motion of chain by sprocket wheel with torque conversion, thus driving electric is voluntarily The trailing wheel of car rotates, and forms moving ahead of electric bicycle.
Because central shaft is coaxial with the axis of bicycle, and is provided with pedal at the two ends of central shaft, therefore, the utility model has following three kinds of type of drive:
1, driven by power, 2, electric power and manpower drive jointly, and 3, manpower drives.
Because central shaft is coaxial with the axis of bicycle, on the trailing wheel of electric bicycle speed change gear can be installed.
Because the utility model has adopted simple transmission mechanism and reverse poor tooth reducing gear, compare with prior art-motor wheel hub driving, have following characteristics:
1, because the transmission efficiency height can have been avoided effectively because of starting, climbing waits the impact of the super-high-current that causes against the wind, can prolong the useful life of motor, battery, has prolonged the continuation of the journey mileage of electric bicycle simultaneously.
2, avoided loaded down with trivial details multi-change speed system, speed change gear can be installed on trailing wheel, improve climbing capacity.
3, drive assembly and be installed in below, electric bicycle middle part, center of gravity is low, rides that it is comfortable to stablize, and safety has overcome front-wheel, the unsettled shortcoming of rear wheel drive.
4, simplify the structure, reduced the machining accuracy of each parts, farthest reduced cost.
In sum, because reducing gear of the present utility model is simple in structure, the energy of consumption in service in the parts friction is less, and the transmission of power is more complete, and therefore, transmission efficiency can reach 90%.Compare with the motor wheel hub driving of prior art, climbing capacity is strong, and it is comfortable, more stable to ride.Be a kind of simple in structure, climbing capacity is strong, and it is comfortable to ride, the drive unit of stable electric bicycle.
Embodiment:
Adopt the utility model device to become the electric bicycle of 26#, the long 187.8MM of main shaft wherein, diameter is 14.9-15.2MM, the eccentric throw of eccentric shaft is 1.2MM, diameter 25.2MM, the number of teeth of driving gear is 87, and modulus is 1, and the number of teeth of gear ring is 89, and modulus is 1.When electrification drove, eccentric shaft drove central shaft, and central shaft drives driving gear, and driving gear drive gear ring driving trailing wheel drives full car and moves ahead.When using manpower and electric power to drive jointly, to remove outside the driving of electric power, manpower is stepped on and is pedaled the pin stone steps, drives the central shaft rotation, forms actuating force jointly with the driving of electric power, more effectively drives trailing wheel and drives full car and move ahead.When the driving of use manpower, manpower is stepped on and is pedaled the pin stone steps, drives central shaft and rotates, and central shaft drives driving gear, and driving gear drive gear ring driving trailing wheel drives full car and moves ahead.Because reducing gear of the present utility model is simple in structure, the energy of consumption in service in the parts friction is less, and the transmission of power is more complete, and because of complete, therefore, transmission efficiency can reach 90%.Compare with the motor wheel hub driving of prior art, climbing capacity is strong, and it is comfortable, more stable to ride.
Claims (1)
1. an electric bicycle is with the mid-Driven by Coaxial assembly of iron-core less motor, comprise central shaft, eccentric shaft, driving gear, gear ring, sprocket wheel, chain is characterized in that the pedal of central shaft two ends and bicycle links, and parallel socket with eccentric shaft connects, eccentric shaft links to each other with driving gear, and driving gear links to each other with reverse poor tooth reducing gear with gear ring, and gear ring links to each other with chain with sprocket wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99256828 CN2402050Y (en) | 1999-12-17 | 1999-12-17 | Intermediate set coaxial driving assembly of iron core free motor for electricity driven bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99256828 CN2402050Y (en) | 1999-12-17 | 1999-12-17 | Intermediate set coaxial driving assembly of iron core free motor for electricity driven bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2402050Y true CN2402050Y (en) | 2000-10-18 |
Family
ID=34039868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99256828 Expired - Fee Related CN2402050Y (en) | 1999-12-17 | 1999-12-17 | Intermediate set coaxial driving assembly of iron core free motor for electricity driven bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2402050Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103587640A (en) * | 2012-08-17 | 2014-02-19 | 株式会社岛野 | Bicycle drive unit |
-
1999
- 1999-12-17 CN CN 99256828 patent/CN2402050Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103587640A (en) * | 2012-08-17 | 2014-02-19 | 株式会社岛野 | Bicycle drive unit |
| CN103587640B (en) * | 2012-08-17 | 2016-03-02 | 株式会社岛野 | The driver element of bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |