CN2736245Y - Power transmitting means of bicycle - Google Patents
Power transmitting means of bicycle Download PDFInfo
- Publication number
- CN2736245Y CN2736245Y CN 200420087195 CN200420087195U CN2736245Y CN 2736245 Y CN2736245 Y CN 2736245Y CN 200420087195 CN200420087195 CN 200420087195 CN 200420087195 U CN200420087195 U CN 200420087195U CN 2736245 Y CN2736245 Y CN 2736245Y
- Authority
- CN
- China
- Prior art keywords
- chain
- flywheel
- transmission shaft
- bicycle
- shaft
- 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
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- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The utility model provides the power transmission device of a bicycle, relating to the technical field of bicycles. The utility model comprises a centre shaft connected with a pedal handle, a flywheel on a rear axle shaft and a chain disk connected with the flywheel via a chain; a transmission shaft is arranged between the centre shaft and the flywheel, the chain disk is installed on the transmission shaft, a driving sprocket and a drive sprocket installed between the transmission shaft and the centre shaft are connected by a chain, and the transmission ratio of the drive sprocket and the driving sprocket is 0. 75:1-0. 84:1. The utility model is very labor-saving no matter when the rider climbs a slope or rides upwind and is suitable for riders in different stages of age.
Description
Technical field
The utility model relates to a kind of technical field of bicycles, especially a kind of power drive of bicycle.
Background technology
Bicycle is the walking-replacing tool that people use always, the transmission device of standard bicycle comprise the axis that has foot-operated handle, with axis on the hind axle that links to each other by chain of chain dish.The driving device of this kind structure, directly give the chain drum application of force when riding, chain drum is passed to diameter on the hind axle to power less than the flywheel of chain drum by chain again, the transmitting ratio of transmission device is just big like this, though chain-coiling circles, flywheel just can rotate several circles, but relatively requires great effort when riding, and is painstaking especially when particularly going up a slope or riding against the wind.For laborsaving, people have invented some variable speed bicycles, as on bicycle rear shaft, adopting one group of gear that the number of gears has nothing in common with each other, come governing speed by selecting different gears, such transmission mechanism of bicycle is complex structure not only, regulate inconvenient, and chain changes between the sprocket wheel through being everlasting, and is easy to wearing and tearing, though economized power, but speed is but very slow, can not get widespread use.
Summary of the invention
The utility model provides a kind of bicycle power drive, and it can solve the problem that bicycle goes up a slope or rides and require great effort against the wind in the prior art.
In order to address the above problem, the scheme that the utility model adopts is: it comprises the axis that is connected with foot-operated handle and the flywheel on the hind axle and by chain and this flywheel bonded assembly chain drum, between described axis and the described flywheel transmission shaft is housed, described chain drum is contained on this transmission shaft, a driving chain wheel and a drive sprocket are housed between this transmission shaft and the described axis, connect by chain between the two, the transmitting ratio of described drive sprocket and described driving chain wheel is 0.75: 1～0.84: 1.
The number of teeth of above-mentioned drive sprocket can be 12～20, and the number of teeth of described driving chain wheel can be 16～24; Above-mentioned axis and transmission shaft can be contained on the subbase.
The utility model compared with prior art has following beneficial effect:
It is laborsaving to ride, and speed is fast.Because the transmitting ratio of drive sprocket and driving chain wheel is controlled between 0.75: 1～0.84: 1, just be in not only laborsaving speed but also fast state through evidence.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Below in conjunction with the accompanying drawing example structure of the present utility model is described in further detail:
As Fig. 1, among the embodiment shown in Figure 2, it comprises the utility model axis 2 and the flywheel 12 on the hind axle 11 that is connected with foot-operated handle 1 and passes through chain 5 and this flywheel bonded assembly chain drum 7, under the bicycle tripod between axis 2 and the flywheel 11 transmission shaft 9 is housed, chain drum 7 is contained on the output shaft of transmission shaft 9, driving chain wheel 8 is housed on the transmission shaft 9, drive sprocket 3 is housed on the axis, drive sprocket 3 is connected by chain 6 with driving chain wheel 8, the number of teeth of drive sprocket 3 is 16, the number of teeth of driving chain wheel 8 is 20, transmitting ratio is 0.8: 1, when being in this transmitting ratio, bicycle speed when riding is laborsaving again soon, axis 2 and transmission shaft 9 all are contained on the subbase 10 simultaneously, and cover is gone up housing again, only exposes output shaft, like this sprocket wheel 3 and 8 and on chain 6 just can not get rusty easily because of wind and weather, simultaneously also can prevent sand, the invasion of dust.
When riding, give pin handle 1 application of force, axis 2 rotations, drive sprocket wheel 8 by the chain on the sprocket wheel 36 and rotate, sprocket wheel 8 drives transmission shaft 9 rotations, and the output shaft of transmission shaft 9 is passed to chain drum 7 to power afterwards, the flywheel 12 that chain 5 on the chain drum 7 drives on the bicycle rear shaft 11 rotates, and bicycle promptly travels.Because sprocket wheel 3 numbers of teeth are 16, sprocket wheel 8 numbers of teeth are 20, and sprocket wheel 3 revolves and turns around, and sprocket wheel 8 just rotates 0.8 circle, and chain drum 7 adopts 48 teeth, and flywheel 12 adopts 20 teeth, and sprocket wheel 3 revolves and turns around like this, and flywheel just rotates 2 circles, has reached labour-saving purpose when riding.
Claims (3)
1, a kind of bicycle power drive, it comprises the axis that is connected with foot-operated handle and the flywheel on the hind axle and by chain and this flywheel bonded assembly chain drum, it is characterized in that: between described axis and the described flywheel transmission shaft is housed, described chain drum is contained on this transmission shaft, a driving chain wheel and a drive sprocket are housed between this transmission shaft and the described axis, connect by chain between the two, the transmitting ratio of described drive sprocket and described driving chain wheel is 0.75: 1～0.84: 1.
2, bicycle power drive according to claim 1 is characterized in that: the number of teeth of described drive sprocket is 12～20, and the number of teeth of described driving chain wheel is 16～24.
3, bicycle power drive according to claim 1 and 2, it is characterized in that: described axis and transmission shaft all are contained on the subbase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420087195 CN2736245Y (en) | 2004-08-27 | 2004-08-27 | Power transmitting means of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420087195 CN2736245Y (en) | 2004-08-27 | 2004-08-27 | Power transmitting means of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2736245Y true CN2736245Y (en) | 2005-10-26 |
Family
ID=35306980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420087195 Expired - Fee Related CN2736245Y (en) | 2004-08-27 | 2004-08-27 | Power transmitting means of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2736245Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103847915A (en) * | 2014-03-27 | 2014-06-11 | 唐立新 | Bicycle transmission device |
| CN108945276A (en) * | 2018-08-16 | 2018-12-07 | 刘刚 | Vehicle power reforming unit |
-
2004
- 2004-08-27 CN CN 200420087195 patent/CN2736245Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103847915A (en) * | 2014-03-27 | 2014-06-11 | 唐立新 | Bicycle transmission device |
| CN108945276A (en) * | 2018-08-16 | 2018-12-07 | 刘刚 | Vehicle power reforming unit |
| CN108945276B (en) * | 2018-08-16 | 2023-06-27 | 刘刚 | Vehicle power conversion device |
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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 |