CN2670225Y - Elliptical chain wheel automatic gear of bicycle - Google Patents
Elliptical chain wheel automatic gear of bicycle Download PDFInfo
- Publication number
- CN2670225Y CN2670225Y CNU2003201234808U CN200320123480U CN2670225Y CN 2670225 Y CN2670225 Y CN 2670225Y CN U2003201234808 U CNU2003201234808 U CN U2003201234808U CN 200320123480 U CN200320123480 U CN 200320123480U CN 2670225 Y CN2670225 Y CN 2670225Y
- Authority
- CN
- China
- Prior art keywords
- sprocket wheel
- bicycle
- crank
- overcoat
- foot
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
- B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
- B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
- B62M9/08—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving eccentrically- mounted or elliptically-shaped driving or driven wheel; with expansible driving or driven wheel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
- B62M2009/002—Non-circular chain rings or sprockets
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Gears, Cams (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The utility model relates to the speed changer of a bicycle, comprising a pedal crank. The elliptical sprocket wheel is in interaction fit with the end of the pedal crank via a connected casing. A screw stop is fixed out of the end of the pedal crank, and a circuit of ball bearings are provided between the screw stop and the casing. One end of a unidirectional pusher dog with a tension spring is connected with the casing, and the free end matches the screw stop to form a crank sprocket wheel interaction speed changing device. Making use of the different positions and the chain transmission of the elliptical sprocket wheel, the utility model achieves different speeds by adjusting the action radius of the elliptical sprocket wheel and the horizontal angle of the pedal crank, that is, by adjusting the action radius of the sprocket wheel when the bicycle is in the best working position. The utility model has the advantages of convenient operation, simple and rational structure, no switch of the chain and the sprocket wheel, no clamping, good reliability and little abrasion.
Description
Technical field: the utility model relates to a kind of bicycle speed-varying unit.
Background technology: general bicycle speed-varying unit all is to utilize the sprocket wheel of a plurality of different-diameters to switch, and reaches the speed changing effect of different driving moment and speed.But the complex structure of this change-speed box, the cost height needs a plurality of sprocket wheels, flywheel, and dials chain device, control handle etc., and operation switching sprocket wheel blocks easily, increases chain wear, uses inconvenient.
Summary of the invention: at the deficiencies in the prior art, it is a kind of simple in structure that the utility model provides, and speed change is bicycle Elliptic chain wheel automatic transmission with hydraulic torque converter easily.
The utility model comprises foot-operated crank, sprocket wheel green phase bonded assembly overcoat and foot-operated crank end are linked, sprocket wheel is oval, foot-operated crank end external fixation has the silk shelves, be provided with a circle ball between itself and the overcoat, unidirectional pusher dog one end of band tensioning spring is connected with overcoat, and free end then cooperates formation crank and chain-wheel interlock transmission system with the silk shelves.
The diverse location that the utility model utilizes Elliptic chain wheel can produce different applied moments and speed during with chain gear, angle when adjusting the radius of action of Elliptic chain wheel and foot-operated crank level like this, sprocket wheel radius of action when also promptly adjusting best work done position by bike reaches friction speed.The utility model is simple and reasonable, and is easy to operate, do not have chain sprocket to switch, can not block, and good reliability, wearing and tearing are few.
Further specify the utility model below in conjunction with drawings and Examples.
Description of drawings: Fig. 1 is the main structure scheme drawing of embodiment;
Fig. 2 is the A-A cutaway view of Fig. 1.
Embodiment: as shown in the figure, sprocket wheel 1 is oval, overcoat 3 is connected with sprocket wheel 1, foot-operated crank 2 end external fixation have silk shelves 5, be provided with a circle ball 4 between itself and the overcoat 3, unidirectional pusher dog 6 one ends of band tensioning spring are connected with overcoat 3, and free end then cooperates formation crank and chain-wheel interlock transmission system with silk shelves 5.In fact, silk shelves 5 promptly are equivalent to be connected the ratchet of foot-operated crank 2 ends, unidirectional pusher dog 6 is equivalent to be connected the ratchet on overcoat 3 and the sprocket wheel 1, both relative engagement transmissions when normally riding, when needing speed change, can rotate backward riding crank 2, promptly sprocket wheel 1 and foot-operated crank 2 relatively rotate, and then unidirectional pusher dog 6 can cooperate transmission with other position of silk shelves 5 when stepping on forward.By changing the best work done radius of sprocket wheel 1, the rotary action radial location of 1 pair of chain of sprocket wheel changes when promptly riding crank 2 levels, reaches different gearing moment and speed like this, and operation easily.Present embodiment also is with flat ring washer 7 outside foot-operated crank 2, also be provided with a circle ball 4 between itself and the overcoat 3, and is more reliable when riding transmission like this, prevents foot-operated crank 2 relative sprocket wheel 1 plane rockings.
Claims (2)
1, a kind of bicycle Elliptic chain wheel automatic transmission with hydraulic torque converter, comprise foot-operated crank, sprocket wheel green phase bonded assembly overcoat and foot-operated crank end are linked, it is characterized by: sprocket wheel (1) is for oval, foot-operated crank (2) end external fixation has silk shelves (5), be provided with a circle ball (4) between itself and the overcoat (3), unidirectional pusher dog (6) one ends of band tensioning spring are connected with overcoat (3), and free end then cooperates with silk shelves (5) and constitutes the crank and chain-wheel transmission system that links.
2, bicycle Elliptic chain wheel automatic transmission with hydraulic torque converter according to claim 1 is characterized by: also be with flat ring washer (7) outside foot-operated crank (2), also be provided with a circle ball (4) between itself and the overcoat (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201234808U CN2670225Y (en) | 2003-12-17 | 2003-12-17 | Elliptical chain wheel automatic gear of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201234808U CN2670225Y (en) | 2003-12-17 | 2003-12-17 | Elliptical chain wheel automatic gear of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2670225Y true CN2670225Y (en) | 2005-01-12 |
Family
ID=34476466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201234808U Expired - Fee Related CN2670225Y (en) | 2003-12-17 | 2003-12-17 | Elliptical chain wheel automatic gear of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2670225Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103863514A (en) * | 2012-12-18 | 2014-06-18 | 杨泰和 | Transmission wheel series with periodically varied speed ratio and having reciprocally displacing auxiliary pulley for storing/releasing kinetic energy |
-
2003
- 2003-12-17 CN CNU2003201234808U patent/CN2670225Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103863514A (en) * | 2012-12-18 | 2014-06-18 | 杨泰和 | Transmission wheel series with periodically varied speed ratio and having reciprocally displacing auxiliary pulley for storing/releasing kinetic energy |
| EP2746143A1 (en) * | 2012-12-18 | 2014-06-25 | Tai-Her Yang | Transmission wheel series with periodically varied speed ratio and having reciprocally displacing auxiliary pulley for storing/releasing kinetic energy |
| CN103863514B (en) * | 2012-12-18 | 2018-10-23 | 杨泰和 | The cycle variable speed that kinetic energy auxiliary belt wheel is released in tool shift reciprocately storage compares train |
| TWI677635B (en) * | 2012-12-18 | 2019-11-21 | 楊泰和 | Transmission wheel series with periodically varied speed ratio and having reciprocally displacing auxiliary pulley for storing/releasing kinetic energy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050112 Termination date: 20100118 |