CN2338259Y - Crank transmission bicycle - Google Patents
Crank transmission bicycle Download PDFInfo
- Publication number
- CN2338259Y CN2338259Y CN 98227642 CN98227642U CN2338259Y CN 2338259 Y CN2338259 Y CN 2338259Y CN 98227642 CN98227642 CN 98227642 CN 98227642 U CN98227642 U CN 98227642U CN 2338259 Y CN2338259 Y CN 2338259Y
- Authority
- CN
- China
- Prior art keywords
- crank
- bicycle
- length
- cranks
- footplate
- 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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- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The utility model relates to a crank transmission bicycle which is composed of a footplate, a crank, a chain wheel, a chain, a chain wheel shaft and a flywheel. The utility model is characterized in that the length of a left and a right cranks connected with the chain wheel shaft can be 1.10 times to 1.57 times as long as that of an ordinary bicycle crank. The cranks are perpendicular with a human body, and the distance between the ground and the footplate is 7 cm to 10 cm when the distance between the footplate and the ground is minimum. The crank transmission bicycle is used. At the time of running by pedaling, because the force couple distance of foot pedaling is larger than the moment of resistance of the original bicycle, the running is implemented in an easier and labor saving way. Thus the running speed can be accelerated.
Description
The utility model belongs to the improvement of bicycle drive.
Existing on the market at present ordinary bicycle, the crank length in its running part designs shortlyer, and step on and seem heavier when capable, and effort.
The purpose of this utility model is exactly in order to overcome above-mentioned shortcoming, provides a kind of in that to use bicycle to step in the capable process more laborsaving, more easily the crank drive bicycle.
The technical solution of the utility model is finished like this: this crank drive bicycle, comprise stretcher, crank, sprocket wheel, chain, sprocket shaft and flywheel are formed, and it is characterized in that a left side that is connected with sprocket shaft, the length of right two cranks is 1.10～1.57 times of ordinary bicycle crank length, and overhead height is 7～10 centimetres when crank and human body vertical leg pedal and ground nadir.
The utlity model has following advantage: a left side that is connected with sprocket shaft, the length of right two cranks is 1.10～1.57 double-lengths of ordinary bicycle crank length, the resisting moment of bicycle was much bigger in the past to make the couple moment ratio, therefore this bicycle is being stepped on when capable, lighter, more laborsaving, thus accelerate to step on line speed.
Fig. 1 is the utility model structural representation.
Now further describe embodiment in conjunction with drawing: this crank drive bicycle is by stretcher 1, crank 2, sprocket wheel 3, chain 4, sprocket shaft 6 and flywheel 5 are formed, two cranks, 2 length are 1.10～1.57 times of ordinary bicycle crank length about being connected with sprocket shaft 6, crank 2 with human body vertical leg pedal 1 during with the ground nadir overhead height be 7～10 centimetres, the connection of running part is all identical with ordinary bicycle.
If 26 cun bicycles, the optimum length of its left and right sides crank is 1.26 times of common 26 cun bicycle crank length, and promptly general ordinary bicycle crank length is 19 centimetres, and best crank length then is 24 centimetres.
If 24 cun bicycles, the optimum length of its left and right sides crank is 1.15 times of common 24 cun bicycle crank length, and promptly general ordinary bicycle crank length is 19 centimetres, and best crank length then is 22 centimetres.
Adopt this crank drive bicycle to be equally applicable to mountain bike, sporting car and other vehicles.
Use this crank drive bicycle, stepping on when capable because the moment of couple that pin is stepped on is more much bigger, therefore lighter when travelling, more laborsaving than the resisting moment of bicycle in the past, thereby accelerating moving velocity.
Claims (2)
1. crank drive bicycle, comprise stretcher, crank, sprocket wheel, chain, sprocket shaft and flywheel are formed, and it is characterized in that a left side that is connected with wheel shaft, the length of right two cranks is 1.10～1.57 times of ordinary bicycle crank length, and overhead height is 7～10 centimetres when crank and human body vertical leg pedal and ground nadir.
2. a kind of crank drive bicycle according to claim 1, the length that it is characterized in that two cranks that are connected with sprocket shaft is: the best crank length of 26 cun bicycles is 1.26 times of ordinary bicycle crank length, and the best crank length of 24 cun bicycles is 1.15 times of ordinary bicycle crank length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98227642 CN2338259Y (en) | 1998-08-17 | 1998-08-17 | Crank transmission bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98227642 CN2338259Y (en) | 1998-08-17 | 1998-08-17 | Crank transmission bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2338259Y true CN2338259Y (en) | 1999-09-15 |
Family
ID=33977923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98227642 Expired - Fee Related CN2338259Y (en) | 1998-08-17 | 1998-08-17 | Crank transmission bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2338259Y (en) |
-
1998
- 1998-08-17 CN CN 98227642 patent/CN2338259Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Designer after: Chen Jianming Designer before: Chen Jianming |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Chen Jianming Patentee before: Chen Jianming |
|
| 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 |