CN201932324U - Bicycle sprocket - Google Patents
Bicycle sprocket Download PDFInfo
- Publication number
- CN201932324U CN201932324U CN2010206418511U CN201020641851U CN201932324U CN 201932324 U CN201932324 U CN 201932324U CN 2010206418511 U CN2010206418511 U CN 2010206418511U CN 201020641851 U CN201020641851 U CN 201020641851U CN 201932324 U CN201932324 U CN 201932324U
- Authority
- CN
- China
- Prior art keywords
- force
- arm
- bicycle
- changes
- sprocket wheel
- 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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- Motorcycle And Bicycle Frame (AREA)
Abstract
A bicycle sprocket is elliptic. Because the elliptic bicycle bottom bracket sprocket is a non-constant-diameter gear, i.e., the force-receiving arm changes, the corresponding change of the force-applying arm is taken into consideration in the process of mounting, i.e., if the force-applying arm is small, the force-receiving arm is small as well at the moment, if the force-applying arm is large, the corresponding force-receiving arm is large, and consequently, under the same speed, the labor of a rider is saved.
Description
Technical field
The present invention relates to a kind of bicycle chainwheel.
Background technology
Be isometrical hinge wheel on the bicycle middle shaft, the rider uses the pedal stretcher, and the arm of force that acts on the axis claims force arm (main force's arm), stretcher is in the process of rotating a circle, force arm changes, and is in its arm of force minimum of vertex (or nadir), application of force maximum; Be in level attitude, its arm of force is the longest, can be considered the length of crank, thereby application of force minimum, as car is at the uniform velocity advanced, and stretcher application of force size in the process of rotating a circle changes.The rotation of hinge wheel is passed to flywheel on the rear axle by chain, and the rotation of flywheel drives a car toward and travels.Chain is called the acting force arm of sprocket wheel and is subjected to the arm of force (from the arm of force), because sprocket wheel is isometrical the wheel, do not changed with the variation of force arm by the arm of force, and this also is the reason that application of force size changes with rotation.People are very familiar to bicycle, and bicycle rider all has above-mentioned impression, and long two legs of ride period are tired out, even it is all difficult to get off at last.
Summary of the invention
The invention provides a kind of stretcher and in rotary course, can change a kind of bicycle chainwheel that the application of force changes.
A kind of bicycle chainwheel is installed on the bicycle middle shaft, and this sprocket wheel is oval-shaped.
Because adopt oval-shaped bicycle middle shaft sprocket wheel, it is non-mitre gears, changed by the arm of force, consider that in installation process the correspondence of force arm changes, can reach design goal.
The present invention compares with the above-mentioned background technology can have following beneficial effect: owing to adorn oval-shaped sprocket wheel on bicycle middle shaft, it is non-mitre gears, changed by the arm of force, considers that in installation process the correspondence of force arm changes, even force arm is little, and then be subjected to the arm of force also little this moment; If force arm is big, the cooresponding arm of force that is subjected to is then big, is reaching under the identical speed of a motor vehicle, makes the rider laborsaving.
Description of drawings
Accompanying drawing 1 is a scheme drawing of the present invention.
The specific embodiment
As shown in Figure 1, oval-shaped sprocket wheel 3 is housed on bicycle middle shaft 6.Because adopt oval-shaped bicycle middle shaft sprocket wheel, it is non-mitre gears, changed by the arm of force, consider that in installation process the correspondence of force arm changes, can reach design goal.Pedal stretcher 5 in the time of by bike drives crank 4 and circumferentially moves, and the rotation of sprocket wheel 3 is passed to flywheel 1 on the rear axle by chain 2, and the rotation of flywheel 1 drives a car toward and travels.
Claims (1)
1. a bicycle chainwheel is installed on the bicycle middle shaft, it is characterized in that: sprocket wheel (3) is oval-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206418511U CN201932324U (en) | 2010-12-03 | 2010-12-03 | Bicycle sprocket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206418511U CN201932324U (en) | 2010-12-03 | 2010-12-03 | Bicycle sprocket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201932324U true CN201932324U (en) | 2011-08-17 |
Family
ID=44443858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206418511U Expired - Fee Related CN201932324U (en) | 2010-12-03 | 2010-12-03 | Bicycle sprocket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201932324U (en) |
-
2010
- 2010-12-03 CN CN2010206418511U patent/CN201932324U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20111203 |