CN2325300Y - Power saving endless chair mechanism of bicycle - Google Patents
Power saving endless chair mechanism of bicycle Download PDFInfo
- Publication number
- CN2325300Y CN2325300Y CN96228515U CN96228515U CN2325300Y CN 2325300 Y CN2325300 Y CN 2325300Y CN 96228515 U CN96228515 U CN 96228515U CN 96228515 U CN96228515 U CN 96228515U CN 2325300 Y CN2325300 Y CN 2325300Y
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- bicycle
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- saving
- labor
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- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The utility model relates to an improved mechanism of the circular chain wheel, of the existing bicycle, which is a driving mechanism; the utility model is suitable for various bicycle; the aim of the utility model is to cause the existing bicycle with a circular chain wheel has labor saving and rapidness after improved. The utility model is composed of a labor-saving chain wheel (1), a crank pin (2), a crank (3), pedals (4), a central axis (5), a chain (6) and a flywheel (7), and is characterized in that the end face of the labor-saving chain wheel (1) is elliptical; the crank (3) and the major axis of the elliptical labor-saving chain wheel (1) are fixed with an included angle of 15 DEG. A labor-saving bicycle which is modified by that the utility model replaces the circular chain wheel of the existing bicycle has labor saving and rapid running, enhances climbing capacity, and is suitable for long-distance running.
Description
The utility model is a kind of improvement mechanism of the circular chain-wheel transmission device of existing bicycle.
In existing improvement technology, though also have with the circular chain-wheel person that is improved to the ellipse wheel, but the major axis of its ellipse wheel all with the crank vertical fixing, therefore can only make resistance arm between chain and the axis when shortening with cosine curve or increasing the pedal axle with in interaxle acting force arm also shorten or to increase its result laborsaving and not obvious thereupon.As patent " ellipse wheel crank " (application number 87209709, classification number B62M9/00).
The purpose of this utility model is that a kind of improved bicycle chain wheel driving mechanism will be provided---" the laborsaving chain-wheel mechanism of bicycle ", it can reach the labour-saving purpose significantly.
Concrete structure of the present utility model is asked for an interview Figure of description, and it is made up of laborsaving sprocket wheel (1), crank pin (2), crank (3), pedal (4), axis (5), chain (6), flywheel (7).The end face of laborsaving sprocket wheel (1) is oval-shaped, and the roller diameter of its major axis, minor axis, the number of teeth, pitch and adapted chain (6) etc. all can be decided as required.The difference of the utility model and other patent family maximum is: almost (both angles only are 15 °) of secured in parallel between the major axis of crank (3) and laborsaving sprocket wheel (1), rather than vertical fixing, its outer end links to each other with pedal (4) by the pedal axle.Crank pin (2), crank (3), pedal (4), axis (5), chain (6), flywheel (7) all with existing bicycle on identical.When the people exerted oneself to pedal (4), laborsaving sprocket wheel (1) together rotated in company with crank (3) and axis (5), drove flywheel (7) by chain (6), drove the trailing wheel rotation then and advanced.Because when the number of teeth of sprocket wheel, the selected back of pitch (being that the sprocket wheel pitch circumference is selected afterwards), the minor axis of ellipse wheel must be less than the diameter of circular chain-wheel, so resistance arm is just little, so the time just must be more laborsaving than circular chain-wheel.Substantially parallel this special fixed form between the major axis of crank (3) and laborsaving sprocket wheel (1) in addition, so just determined when resistance arm between chain (6) and the axis (5) hour, just the acting force arm between pedal axle and the axis (5) almost reaches maximum (state as shown in drawings), so more laborsaving.On the other hand, when the resistance arm between chain (6) and the axis (5) is big, just in time be the moment at intermittence that bipod is exerted oneself, result's section of effort is advanced with inertia have been avoided dexterously.The utility model is desired to reach obvious labour-saving purpose and is come to this and realize.Experiment is measured, actual comparable circular chain-wheel transmission device laborsaving 25～33%.Because laborsaving, the result causes operation quick, lasting, and has improved hill climbing ability.
Though the utility model has been realized obvious labour-saving purpose, do not increase a part, structure is still simple as the circular chain-wheel transmission device.
Claims (1)
- The utility model is the laborsaving chain-wheel mechanism of a kind of bicycle, form by laborsaving sprocket wheel (1), crank pin (2), crank (3), pedal (4), axis (5), chain (6) and flywheel (7) etc., it is characterized in that: laborsaving sprocket wheel (1) is oval-shaped, and the major axis of laborsaving sprocket wheel (1) becomes 15 ° of angles to fix with crank (3) approximately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96228515U CN2325300Y (en) | 1996-08-08 | 1996-08-08 | Power saving endless chair mechanism of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96228515U CN2325300Y (en) | 1996-08-08 | 1996-08-08 | Power saving endless chair mechanism of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2325300Y true CN2325300Y (en) | 1999-06-23 |
Family
ID=33906381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96228515U Expired - Fee Related CN2325300Y (en) | 1996-08-08 | 1996-08-08 | Power saving endless chair mechanism of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2325300Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582769A (en) * | 2012-03-31 | 2012-07-18 | 刘刚 | Elliptical or approximately-elliptical driving sprocket device for man-powered vehicle |
| TWI722688B (en) * | 2019-11-28 | 2021-03-21 | 國立虎尾科技大學 | Bicycle with compound sprocket composed of four elliptical arcs |
-
1996
- 1996-08-08 CN CN96228515U patent/CN2325300Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582769A (en) * | 2012-03-31 | 2012-07-18 | 刘刚 | Elliptical or approximately-elliptical driving sprocket device for man-powered vehicle |
| TWI722688B (en) * | 2019-11-28 | 2021-03-21 | 國立虎尾科技大學 | Bicycle with compound sprocket composed of four elliptical arcs |
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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 |