CN201999167U - Bicycle chain wheel - Google Patents
Bicycle chain wheel Download PDFInfo
- Publication number
- CN201999167U CN201999167U CN201120062236XU CN201120062236U CN201999167U CN 201999167 U CN201999167 U CN 201999167U CN 201120062236X U CN201120062236X U CN 201120062236XU CN 201120062236 U CN201120062236 U CN 201120062236U CN 201999167 U CN201999167 U CN 201999167U
- Authority
- CN
- China
- Prior art keywords
- chain wheel
- bicycle
- sprocket wheel
- utility
- pedals
- 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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Abstract
The utility model belongs to the technical field of bicycle accessories, in particular to a bicycle chain wheel. The utility model aims to solve the problem that a cyclist needs great effort comparatively. The utility model has the technical scheme that the bicycle chain wheel comprises a chain wheel and two pedals, wherein teeth are arranged all around the chain wheel; the directions of the two pedals are opposite; the two pedals are fixedly connected onto a central axis of the chain wheel after being arranged in a line; the chain wheel comprises two 90-degree small fan-shaped arcs and two 90-degree big fan-shaped arcs; and the length radio of the long axis to the minor axis of the chain wheel is 5:(3-4). Compared with the length of a resisting arm of a circular chain wheel, the resisting arm of the bicycle chain wheel is much shorter, and therefore, the resisting moment is smaller, and as the required power is reduced, the cyclist naturally feels laborsaving comparatively.
Description
Technical field
The utility model belongs to the bicycle accessories technical field, is specifically related to a kind of bicycle chainwheel.
Background technology
Bicycle occupies quite great proportion as a kind of economy, environmental protection, the vehicle easily in daily life, especially occupy bigger ratio in middle school student.Existing bicycle chainwheel adopts circle more, and the rider, overcomes resistance bicycle is advanced to the sprocket wheel application of force by pedal.Especially when going up a slope or go against the wind, rider obviously sensation requires great effort very much.Therefore how making bicycle more laborsaving is a lot of people's issues to be resolved.
Summary of the invention
The purpose of this utility model is the problem of relatively requiring great effort at the rider, and a kind of labour-saving bicycle chainwheel is provided.
The utility model is to address the above problem the technical scheme of taking to be:
A kind of bicycle chainwheel, the sprocket wheel pedal opposite that has tooth around comprising one with both direction, pedal is in alignment to be fixedly connected on the center shaft of sprocket wheel, described sprocket wheel is made up of two 90 ° little fan-shaped arc and two 90 ° big fan-shaped arc, and the length ratio of the major axis of sprocket wheel and minor axis is 5: 3～4.
The utility model adopts technique scheme, utilize the length of the variation change resistance arm between sprocket wheel major axis and the minor axis, the angle of the direction of foot-operated power and pedal than hour, the arm of force of active force is shorter, and resistance arm is close with the sprocket wheel minor axis, compares with the resistance arm length of circular chain-wheel, lacked a lot, thereby resisting moment is less, and required drive reduces, and it is more laborsaving that the rider feels naturally.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, a kind of bicycle chainwheel, sprocket wheel 1 pedal 4 opposite that has tooth 2 around comprising one with both direction, pedal 4 is in alignment to be fixedly connected on the center shaft 3 of sprocket wheel 1, described sprocket wheel 1 is made up of two 90 ° little fan-shaped arc 5 and two 90 ° big fan-shaped arc 6, and the length ratio of the major axis of sprocket wheel 1 and minor axis is 5: 3.
As shown in Figure 1, a kind of bicycle chainwheel, sprocket wheel 1 pedal 4 opposite that has tooth 2 around comprising one with both direction, pedal 4 is in alignment to be fixedly connected on the center shaft 3 of sprocket wheel 1, described sprocket wheel 1 is made up of two 90 ° little fan-shaped arc 5 and two 90 ° big fan-shaped arc 6, and the length ratio of the major axis of sprocket wheel 1 and minor axis is 5: 4.
Claims (1)
1. bicycle chainwheel, sprocket wheel (1) pedal (4) opposite that has tooth (2) around comprising one with both direction, pedal (4) is in alignment to be fixedly connected on the center shaft (3) of sprocket wheel (1), it is characterized in that described sprocket wheel (1) is made up of two 90 ° little fan-shaped arc (5) and two 90 ° big fan-shaped arc (6), the major axis of sprocket wheel (1) and the length ratio of minor axis are 5: 3～4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120062236XU CN201999167U (en) | 2011-03-08 | 2011-03-08 | Bicycle chain wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120062236XU CN201999167U (en) | 2011-03-08 | 2011-03-08 | Bicycle chain wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201999167U true CN201999167U (en) | 2011-10-05 |
Family
ID=44701916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120062236XU Expired - Fee Related CN201999167U (en) | 2011-03-08 | 2011-03-08 | Bicycle chain wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201999167U (en) |
-
2011
- 2011-03-08 CN CN201120062236XU patent/CN201999167U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20140308 |