CN2085347U - High speed ratio transmission for bicycle - Google Patents
High speed ratio transmission for bicycle Download PDFInfo
- Publication number
- CN2085347U CN2085347U CN 91203533 CN91203533U CN2085347U CN 2085347 U CN2085347 U CN 2085347U CN 91203533 CN91203533 CN 91203533 CN 91203533 U CN91203533 U CN 91203533U CN 2085347 U CN2085347 U CN 2085347U
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- CN
- China
- Prior art keywords
- bicycle
- original
- chain
- utility
- model
- 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.)
- Withdrawn
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- Gears, Cams (AREA)
Abstract
The utility model which discloses a two-stage driving device with a high speed ratio can be installed on a common bicycle. The utility model is characterized in that a first-stage transmission is composed of the original chain plate of the bicycle, a minor sprocket fixed on the original transverse fork of the bicycle and a reel chain, the second-stage transmission is composed of a large sprocket which is coaxial with the minor sprocket, the original free wheel of the bicycle and a short chain, and the driving crank on the original chain plate of the bicycle is changed to a long crank in order to relieve the treading force of a rider. The utility model has the advantages of scientific and reasonable structure, simple and convenient loading and unloading and low fabrication cost; a few of components are added to the existing bicycle in order to increase the speed.
Description
The utility model relates to a kind of sprocket transmission device, is specially adapted to improve the transmission speed ratio of existing ordinary bicycle.
The driving device of existing bicycle, mainly be to constitute by crank, chain drum, flywheel, chain, transmission speed ratio is decided by the ratio of number of teeth of chain drum and flywheel, but its ratio can not be too big, because too conference causes chain that the flywheel engagement is influenced normal transmission inadequately, therefore ordinary bicycle is not given full play to cyclist's potentiality to pedal and is made bicycle reach the speed of a motor vehicle faster at present.
The purpose of this utility model is for using the widest additional driving device of ordinary bicycle design one cover at present, under the situation that cyclist's pedal potentiality allow, making bicycle can reach the speed more faster than existing bicycle.
Enforcement means of the present utility model are that the one-level chain sprocket drive of the existing bicycle of change is the secondary chain sprocket drive, exert oneself for the pedal that alleviates the cyclist, strengthen the length that drives crank.
Advantage of the present utility model is as long as existing bicycle is increased several parts, and the cyclist need not spend too that great strength just can improve bicycle speed greatly.The utility model is scientific and reasonable for structure, loads and unloads simple and conveniently, and cost is not high, promotes easily.
Accompanying drawing drawing of the present utility model is described as follows:
Fig. 1 is the structural representation front elevation of bicycle secondary sprocket transmission device.
Fig. 2 is the structural representation birds-eye view of bicycle secondary sprocket transmission device.
Number in the figure: the 1-chain drum, 2-drives long crank, the horizontal wooden fork of 3-, 4-reel chain, 5-pedestal, 6-tween drive shaft, 7-minor sprocket, 8-hinge wheel, 9-short chain, 10-flywheel.
Embodiment:
Accompanying drawing is an embodiment of the present utility model, form first order transmission by the original chain drum of bicycle 1 and the minor sprocket 7 and the reel chain 4 that are fixed on the original horizontal wooden fork of the bicycle right side, then by forming second stage transmission with short chain 9 with coaxial hinge wheel 8 and the original flywheel 10 of bicycle of minor sprocket 7.Hinge wheel 8 and minor sprocket 7 are assemblied on the same tween drive shaft 6, and the pedestal 5 of tween drive shaft is fixed on the right side of the original horizontal wooden fork 3 of bicycle, exert oneself for the pedal that alleviates the cyclist, and the original driving crank of bicycle is driven long crank 2 instead.
Claims (2)
1, a kind of high speed compares bicycle drive, it is characterized in that forming first order transmission with reel chain, then by forming second stage transmission with short chain with coaxial hinge wheel and the original flywheel of bicycle of minor sprocket by original chain drum of bicycle and the minor sprocket that is fixed on the original horizontal wooden fork of bicycle.
2, high speed as claimed in claim 1 is characterized in that being than bicycle drive: described minor sprocket and hinge wheel use same tween drive shaft, and the pedestal of tween drive shaft is fixed on the original horizontal wooden fork of bicycle right side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91203533 CN2085347U (en) | 1991-03-08 | 1991-03-08 | High speed ratio transmission for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91203533 CN2085347U (en) | 1991-03-08 | 1991-03-08 | High speed ratio transmission for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2085347U true CN2085347U (en) | 1991-09-25 |
Family
ID=4913830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91203533 Withdrawn CN2085347U (en) | 1991-03-08 | 1991-03-08 | High speed ratio transmission for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2085347U (en) |
-
1991
- 1991-03-08 CN CN 91203533 patent/CN2085347U/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| 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 |