CN102582770A - Transmission capable of changing moment of bicycle crank - Google Patents
Transmission capable of changing moment of bicycle crank Download PDFInfo
- Publication number
- CN102582770A CN102582770A CN2011100095347A CN201110009534A CN102582770A CN 102582770 A CN102582770 A CN 102582770A CN 2011100095347 A CN2011100095347 A CN 2011100095347A CN 201110009534 A CN201110009534 A CN 201110009534A CN 102582770 A CN102582770 A CN 102582770A
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- China
- Prior art keywords
- elliptic
- crank
- moment
- gear
- chain wheel
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- 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.)
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Abstract
A transmission capable of changing moment of a bicycle crank comprises two matched elliptic gears of the same size, wherein one elliptic gear is fixed onto the left crank, and the other elliptic gear drives gears, a chain wheel and a chain to rotate. When the crank rotates, the diameter of the contacting position of the two elliptic gears continuously changes, so that the moment of the crank is changed. The transmission is simple in structure and capable of increasing the moment at the position that the rotating moment of the crank becomes smaller, so that labor is saved, and the effect is obvious when a bicycle is in upslope.
Description
Technical field:
The invention belongs to the bicycle field, can in the bicycle crank rotary course, change the moment of crank.
Technical background:
At present bicycle crank is when rotating near upper and lower side, the too small effort that scrunches of crank moment.
Summary of the invention:
The objective of the invention is a kind of driving device that can make bicycle crank in rotary course, change moment, crank moment near upper and lower side the time is increased, save muscle power.
This device comprises two identical elliptic gears. chain wheel. and gear. formations such as chain; Two identical elliptic gears match; One of them is fixed on the crank of left side; Another elliptic gear driven gear. chain wheel and chain rotate, and the diameter of elliptic gear constantly changes during the crank rotation, thereby realize the change of crank moment.
Description of drawings:
Fig. 1 driving device of the present invention uses elliptic gear transmission scheme drawing:
Fig. 2 elliptic gear transmission side view:
Fig. 3 uses Elliptic chain wheel transmission scheme drawing:
The specific embodiment:
Below in conjunction with the mechanism of description of drawings driving device, shown in Fig. 1 .2, elliptic gear 1 is fixed together with left side crank 6; Left side crank 6 drives elliptic gear 1 rotation, and elliptic gear 1 drives elliptic gear 2 rotations, because elliptic gear 1 and 2 is that size is identical; So elliptic gear 1 is the same with 2 rotating speed, when left side crank 6 is rotated down, in elliptic gear 1 and 2 contacted positions; Because elliptic gear 1 diameter diminishes, it is big that elliptic gear 2 diameters become, so the moment of crank 6 significantly increases; Therefore saved muscle power, elliptic gear 2 drives in-line gears 5 and rotates, and gear 5 driven gears 4 and chain wheel 3 rotate; Rotate thereby drive chain 8, because the rotation of left and right sides crank 6 and 7, also the cycle changes the moment of crank.
As shown in Figure 3; Elliptic chain wheel 9 is fixed together with left side crank 6, and Elliptic chain wheel 9 links to each other with 10 usefulness chains 11, because Elliptic chain wheel 9 and 10 is that size is identical; So Elliptic chain wheel 9 is the same with 10 rotating speed; Elliptic chain wheel 9 drives Elliptic chain wheel 10 rotations, and Elliptic chain wheel 10 drives coaxial chain wheel 3 and chain 8 rotates, and the moment variations of Elliptic chain wheel is identical with elliptic gear.
The present invention has simple in structure, is widely used performance and stablizes, and effect is obvious during upward slope.
Claims (3)
1. driving device that can change bicycle crank moment comprises the elliptic gear of two identical sizes, chain wheel. gear and chain etc.
2. according to claims 1 said a kind of driving device that can change bicycle crank moment; It is characterized by two elliptic gears matches; One is fixed on the crank of left side; Another elliptic gear driven gear. chain wheel and chain rotate, and the diameter of two elliptic gear contact positions constantly changes during the crank rotation, thereby realize the change of crank moment.
3. according to claims 1 said a kind of driving device that can change bicycle crank moment, it is characterized by the Elliptic chain wheel that two identical big or small elliptic gears can change two identical sizes into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100095347A CN102582770A (en) | 2011-01-18 | 2011-01-18 | Transmission capable of changing moment of bicycle crank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100095347A CN102582770A (en) | 2011-01-18 | 2011-01-18 | Transmission capable of changing moment of bicycle crank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102582770A true CN102582770A (en) | 2012-07-18 |
Family
ID=46472168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100095347A Pending CN102582770A (en) | 2011-01-18 | 2011-01-18 | Transmission capable of changing moment of bicycle crank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102582770A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101538638B1 (en) * | 2015-04-13 | 2015-07-22 | 강주엽 | Power transmission device according to the reciprocating gear |
-
2011
- 2011-01-18 CN CN2011100095347A patent/CN102582770A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101538638B1 (en) * | 2015-04-13 | 2015-07-22 | 강주엽 | Power transmission device according to the reciprocating gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120718 |