CN202609021U - Central shaft transmission mechanism for electric bicycle - Google Patents
Central shaft transmission mechanism for electric bicycle Download PDFInfo
- Publication number
- CN202609021U CN202609021U CN 201220216843 CN201220216843U CN202609021U CN 202609021 U CN202609021 U CN 202609021U CN 201220216843 CN201220216843 CN 201220216843 CN 201220216843 U CN201220216843 U CN 201220216843U CN 202609021 U CN202609021 U CN 202609021U
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- chain
- transmission mechanism
- motor
- central shaft
- shaft transmission
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Abstract
The utility model relates to a central shaft transmission mechanism for an electric bicycle. The central shaft transmission mechanism for the electric bicycle comprises a bicycle frame, a rear wheel shaft and a rear wheel, wherein the rear wheel shaft is arranged on the rear part of the bicycle frame; the rear wheel is fixed on the rear wheel shaft; the intermediate part of the bicycle frame is provided with a transmission mechanism, a central shaft and foot pedals connected with the central shaft; the transmission mechanism comprises a motor and a chain wheel set connected with the motor; and the chain wheel set is connected with a left flywheel arranged on the rear wheel shaft through a chain. The central shaft transmission mechanism disclosed by the utility model simplifies the structure of the transmission mechanism through a central shaft transmission mode, thereby greatly reducing the manufacturing cost of the motor and a transmission device of the electric bicycle more than two thirds compared with a wheel hub motor with same power and achieving good transmission effect; according to the utility model, very good economic benefit and social benefit are achieved.
Description
Technical field
The utility model relates to a kind of transmission device, relates in particular to a kind of shaft transmission that is used for Electrical Bicycle.
Background technology
Electrical Bicycle adopts wheel hub motor more and more universal, and the rotating speed of wheel hub motor is very slow, and per minute is about 200 to be changeed, thereby weight is bigger, although texture ratio is more succinct, its cost and price is equivalent to 5 to 7 times of equal-wattage common DC motor.The Revolution Per Minute of common DC motor is 2700 to go to 3000 and change, and exceeds about 15 times than the needed rotating speed of wheel, and this has brought difficulty for design of transmission device.
Summary of the invention
The utility model has overcome the deficiency of prior art, and a kind of shaft transmission that is used for Electrical Bicycle simple in structure is provided.
For achieving the above object; The technical scheme that the utility model adopts is: a kind of shaft transmission that is used for Electrical Bicycle; Comprise vehicle frame, be arranged at the vehicle frame rear portion hind axle, be fixed on the trailing wheel on the hind axle; The middle part of said vehicle frame be provided with transmission device, axis, with said axis bonded assembly stretcher, said transmission device comprise motor, with motor bonded assembly chain wheel set, said chain wheel set is connected with left flywheel on being installed in said hind axle through chain.
In preferred embodiment of the utility model; The shaft transmission that is used for Electrical Bicycle comprises that further said chain wheel set comprises minor sprocket and passes through chain and minor sprocket bonded assembly hinge wheel; Said minor sprocket is located on the motor output shaft, and said hinge wheel is installed in axis one end.
In preferred embodiment of the utility model, the shaft transmission that is used for Electrical Bicycle comprises that further said hinge wheel is connected with drive sprocket on being located at axis through bearing carrier ring, is provided with bearing in the said bearing carrier ring.
In preferred embodiment of the utility model, the shaft transmission that is used for Electrical Bicycle comprises that further said drive sprocket adopts the two-stage transmission.
In preferred embodiment of the utility model, the shaft transmission that is used for Electrical Bicycle comprises that further said drive sprocket is connected with left flywheel on being installed in hind axle through chain.
In preferred embodiment of the utility model, the shaft transmission that is used for Electrical Bicycle comprises that further the crank chain wheel that is arranged on the said axis other end is connected with right flywheel on being installed in hind axle through chain.
The utility model has solved the defective that exists in the background technology; Driven off by shaft type of drive had been simplified the structure of transmission device during the utility model passed through; Not only greatly reduce the manufacturing cost of motor and driving device in the Electrical Bicycle; Wheel hub motor than equal-wattage reduces more than 2/3rds, and transmission is effective, has good economic benefits and social benefit.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the front view of the preferred embodiment of the utility model;
Fig. 2 is the cutaway view of the preferred embodiment of the utility model;
Among the figure: 1, vehicle frame, 2, hind axle, 3, trailing wheel, 4, axis, 5, stretcher, 6, motor; 7, chain wheel set, 8, minor sprocket, 9, chain, 10, hinge wheel, 11, bearing carrier ring; 12, drive sprocket, 13, chain, 14, left flywheel, 15, the crank chain wheel, 16, chain, 17, right flywheel.
The specific embodiment
Combine accompanying drawing and embodiment that the utility model is done further detailed explanation now, these accompanying drawings are the scheme drawing of simplification, the basic structure of the utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
Like Fig. 1, shown in Figure 2; A kind of shaft transmission that is used for Electrical Bicycle; Comprise vehicle frame 1, be arranged at vehicle frame 1 rear portion hind axle 2, be fixed on the trailing wheel 3 on the hind axle 2; The middle part of said vehicle frame 1 be provided with transmission device, axis 4, with said axis 4 bonded assembly stretchers 5, said transmission device comprise motor 6, with motor 6 bonded assembly chain wheel set 7, said chain wheel set 7 is connected with left flywheel 14 on being installed in said hind axle 2 through chain; Hind axle 2 is threaded with left flywheel 14, and the negative thread of left flywheel 14 is the M35X1-LH minus thread.
The preferred said chain wheel set 7 of the utility model comprises minor sprocket 8 and through chain 9 and minor sprocket 8 bonded assembly hinge wheels 10, said minor sprocket 8 is located on motor 6 output shafts, and said hinge wheel 10 is installed in axis 4 one ends.In addition, in order to make motor 6 transferring power and axis 4 renunciations, said hinge wheel 10 is connected with drive sprocket 12 on being located at axis 4 through bearing carrier ring 11; Be provided with the bearing (not shown) in the bearing carrier ring 11; Axis 4 only plays a part the supporting transmission, is keeping idling conditions relatively, and drive sprocket 12 adopts the two-stage transmission; Driving efficiency is high, and drive sprocket 12 is connected with left flywheel 14 on being installed in hind axle 2 through chain 13.
The crank chain wheel 15 that the utility model preferably is arranged on said axis 4 other ends is connected with right flywheel 17 on being installed in hind axle 2 through chain 16; Hind axle 2 is threaded with right flywheel 17; The negative thread of right flywheel 17 is the M35X1 right-hand screw thread, is convenient to carry out manpower and drives.
The principle of work of the utility model is following:
During driven by power; Minor sprocket 8 on motor 6 output shafts drives hinge wheel 10 rotations on the axis 4 through chain 9; Hinge wheel 10 drives drive sprocket 12 rotations, and drive sprocket 12 drives left flywheel 14 rotations on the hind axle 2 through chain 13, thereby drive trailing wheel 3 runnings Electrical Bicycle is moved ahead; Hinge wheel 10, drive sprocket 12 do not have interaction relation with axis 4, thereby can not drive axis 4 and stretcher 5 rotations; When electric power needed a little less than very manpower to drive, pedal stretcher 5 drove crank chain wheel 15 rotations on the axis 4, and crank chain wheel 15 drives right flywheel 17 rotations through chain 16, thereby drive trailing wheel 3 Electrical Bicycle is moved ahead.
Above desirable embodiment according to the utility model is enlightenment, and through above-mentioned description, the related personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the specification sheets, must confirm technical scope according to the claim scope.
Claims (6)
1. shaft transmission that is used for Electrical Bicycle; Comprise vehicle frame, be arranged at the vehicle frame rear portion hind axle, be fixed on the trailing wheel on the hind axle; The middle part of said vehicle frame be provided with transmission device, axis, with said axis bonded assembly stretcher; It is characterized in that: said transmission device comprise motor, with motor bonded assembly chain wheel set, said chain wheel set is connected with left flywheel on being installed in said hind axle through chain.
2. the shaft transmission that is used for Electrical Bicycle according to claim 1; It is characterized in that: said chain wheel set comprises minor sprocket and passes through chain and minor sprocket bonded assembly hinge wheel; Said minor sprocket is located on the motor output shaft, and said hinge wheel is installed in axis one end.
3. the shaft transmission that is used for Electrical Bicycle according to claim 2 is characterized in that: said hinge wheel is connected with drive sprocket on being located at axis through bearing carrier ring, is provided with bearing in the said bearing carrier ring.
4. the shaft transmission that is used for Electrical Bicycle according to claim 3 is characterized in that: said drive sprocket adopts the two-stage transmission.
5. the shaft transmission that is used for Electrical Bicycle according to claim 4 is characterized in that: said drive sprocket is connected with left flywheel on being installed in hind axle through chain.
6. the shaft transmission that is used for Electrical Bicycle according to claim 1 is characterized in that: the crank chain wheel that is arranged on the said axis other end is connected with right flywheel on being installed in hind axle through chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220216843 CN202609021U (en) | 2012-05-15 | 2012-05-15 | Central shaft transmission mechanism for electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220216843 CN202609021U (en) | 2012-05-15 | 2012-05-15 | Central shaft transmission mechanism for electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202609021U true CN202609021U (en) | 2012-12-19 |
Family
ID=47342741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220216843 Expired - Fee Related CN202609021U (en) | 2012-05-15 | 2012-05-15 | Central shaft transmission mechanism for electric bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202609021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102673721A (en) * | 2012-05-15 | 2012-09-19 | 昆山小小恐龙儿童用品有限公司 | Middle axle transmission mechanism for electric bicycle |
-
2012
- 2012-05-15 CN CN 201220216843 patent/CN202609021U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102673721A (en) * | 2012-05-15 | 2012-09-19 | 昆山小小恐龙儿童用品有限公司 | Middle axle transmission mechanism for electric bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20150515 |
|
| EXPY | Termination of patent right or utility model |