CN2176966Y - Two step speed changing wheel - Google Patents
Two step speed changing wheel Download PDFInfo
- Publication number
- CN2176966Y CN2176966Y CN 93221993 CN93221993U CN2176966Y CN 2176966 Y CN2176966 Y CN 2176966Y CN 93221993 CN93221993 CN 93221993 CN 93221993 U CN93221993 U CN 93221993U CN 2176966 Y CN2176966 Y CN 2176966Y
- Authority
- CN
- China
- Prior art keywords
- flywheel
- change wheel
- speed changing
- thigh
- 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
The utility model relates to a novel two-stage speed changing wheel which is composed of a large flywheel, two speed changing wheels, a small flywheel, etc. The utility model is characterized in that the large flywheel, the small flywheel and one speed changing wheel are made into elliptical, and the thigh of a pedal is perpendicular to the short shaft of the elliptical large flywheel. The utility model has the advantages of speed changing, labor saving and easiness. The utility model is suitable for various bicycles.
Description
The utility model relates to a kind of bicycle change wheel, especially two stage speed change, the novel two stage speed change wheel in brisk, labour-saving.
At present, known two stage speed change wheel construction is by big flywheel, change wheel, and small flywheel and chain are formed.When bicycle is pedaled, pedal the power that thigh acts on the big flywheel by car and drive change wheel by chain, act on the small flywheel by another chain by change wheel again, reach the purpose of two stage speed change, but above-mentioned two stage speed change wheel, though solved the problem of two stage speed change, because wheel all is circular, so brisk not enough, laborsaving.
The purpose of this utility model provides a kind of novel two stage speed change wheel, and it can not only realize two stage speed change, and can be brisk laborsaving.
The purpose of this utility model is to realize like this, change ellipse into big flywheel and by change wheel and small flywheel that it drove, the pedal thigh becomes vertical configuration to install with the minor axis of big flywheel, makes the force become 30 ° of-35 ° of angles with this tangent line, and the pedal thigh increases by two centimeters than common thigh.
When bicycle is pedaled, when car is pedaled thigh and acted on big flywheel, because thigh increases by 2 centimeters, the arm of force increases, again because the pedal thigh is vertical with the minor axis of big flywheel, so the force is near major axis, so the arm of force is also long, thereby has increased the efficient of work done, reach brisk labour-saving purpose.
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is a schematic diagram of the present utility model.
Fig. 2 is the erection plan of big flywheel and pedal thigh position.
Among the figure, 1, oval big flywheel, 2, chain, 3, oval speed change wheel, 4, circular change wheel, 5, chain, 6, oval small flywheel, 7, the pedal thigh, 8, axis.
Among Fig. 1, oval big flywheel 1 drives oval speed change wheel 3 by chain 2, oval speed change wheel 3 is coaxial with circular change wheel 4, thereby drive circular change wheel 4 again, and circular change wheel 4 drives oval small flywheel 6 by chain 5 again, and big flywheel becomes 30 °-35 ° with force between the chain with the tangent line of this point, big flywheel can be made 48 teeth, oval speed change wheel 3 can be made 16 teeth, and circular change wheel 4 is made the 22-24 tooth, and oval small flywheel is made 13 teeth.Circular change wheel is by the lining during installation, and oval speed change wheel is positioned on the outside.Among Fig. 2, pedal thigh 7 is mounted to vertical with ellipse short shaft.
Claims (2)
1, a kind of novel two stage speed change wheel, comprise big flywheel, two change wheels, small flywheel, two chains, it is characterized in that: big flywheel and changed into ellipse by change wheel and small flywheel that it drove, the pedal thigh becomes the vertical configuration installation with the minor axis of big flywheel, makes the force become 30 ° of-50 ° of angles with this tangent line.
2, novel two stage speed change wheel as claimed in claim 1, it is characterized in that: the pedal thigh increases by 2 centimeters than common thigh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93221993 CN2176966Y (en) | 1993-09-15 | 1993-09-15 | Two step speed changing wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93221993 CN2176966Y (en) | 1993-09-15 | 1993-09-15 | Two step speed changing wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2176966Y true CN2176966Y (en) | 1994-09-14 |
Family
ID=33800699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93221993 Expired - Fee Related CN2176966Y (en) | 1993-09-15 | 1993-09-15 | Two step speed changing wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2176966Y (en) |
-
1993
- 1993-09-15 CN CN 93221993 patent/CN2176966Y/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 | ||
| 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 |