CN2310007Y - Two-stage transmission speed-changing bicycle - Google Patents
Two-stage transmission speed-changing bicycle Download PDFInfo
- Publication number
- CN2310007Y CN2310007Y CN 97203055 CN97203055U CN2310007Y CN 2310007 Y CN2310007 Y CN 2310007Y CN 97203055 CN97203055 CN 97203055 CN 97203055 U CN97203055 U CN 97203055U CN 2310007 Y CN2310007 Y CN 2310007Y
- Authority
- CN
- China
- Prior art keywords
- drive shaft
- minor sprocket
- tween drive
- bicycle
- broad
- 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 relates to an improved structure for bicycles; the goal is to overcome the shortages of slow speed and strenuosity of a traditional bicycle. The utility model adopts a two-stage transmission structure; a big and a small chain wheels of pedals can drive a flywheel connected with a back wheel of the bicycle into the integration through a middle big chain wheel and a middle small chain wheel; a middle shaft is also arranged on a bicycle frame; the middle big chain wheel and the middle small chain wheel are positioned on both ends of a middle shaft; a reinforced frame is also arranged between the middle shaft and a back bicycle frame. Two-stage transmission flywheel structure is realized; the utility model has the advantages of high speed, flexible speed change and labour saving.
Description
The utility model relates to a kind of improvement structure of bicycle.
Traditional bicycle drives the flywheel drive wheels by the pedal sprocket wheel and advances, and speed is slower, do not save labour yet, though with the quantity of the big small flywheel of increase reaching speed changing function, not the saving labour of this one-level conducting structure itself.
The purpose of this utility model provides a kind of two-stage conduction variable speed bicycle, adopts secondary conduction flywheel structure, and it is fast to make it have speed, flexibly speed change and labour-saving advantage.
The utility model is by vehicle frame, and chain and flywheel are formed, and the power conduction of bicycle is the two-stage conducting structure, and the big minor sprocket of pedal drives the flywheel that fuses with bicycle rear by minor sprocket broad in the middle.Also be provided with a tween drive shaft on the vehicle frame, minor sprocket broad in the middle is positioned at the two ends of tween drive shaft, also is provided with hog frame between tween drive shaft and the back vehicle frame.The said structure design has reached the purpose of this utility model.
The utility model adopts the two-stage conducting structure, and under calm situation, scooter reached as high as 40 kilometers more than 30 kilometers when the ordinary people rode, and saved labour about 1/2 than common derailleur.Meet that load-carrying is gone up a slope or against the wind the time, with minor sprocket displacement broad in the middle, speed per hour per hour can keep about 15 kilometers, and laborsaving about 2/3, and repacking easily, and result of use is good.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the utility model structural representation
The utility model is by vehicle frame 1, chain 5,8, form with flywheel 7, the power conduction of bicycle is the two-stage conducting structure, the big minor sprocket of pedal drives the flywheel that fuses with bicycle rear by minor sprocket broad in the middle, also be provided with a tween drive shaft 3 on the vehicle frame, minor sprocket broad in the middle is positioned at the two ends of tween drive shaft, also is provided with hog frame 6 between tween drive shaft and the back vehicle frame.The big minor sprocket of pedal drives middle minor sprocket 4 transmissions that are positioned at tween drive shaft one end by chain 8 and is positioned at the sprocket wheel broad in the middle 2 of the tween drive shaft other end and drives flywheel 7 by chain 5.The tween drive shaft two ends are the square axle, and minor sprocket broad in the middle is positioned on the square axle, and minor sprocket broad in the middle is interchangeable on square shaft.During concrete the making, back middle-end welding tween drive shaft bowl at vehicle frame 1, establish tween drive shaft 3 in it, the tween drive shaft two ends are square, establish screw thread on it, between tween drive shaft and back vehicle frame, be welded with hog frame 6, make different middle minor sprocket 4 and the sprocket wheels broad in the middle 2 of sprocket diameter, its hub-interface cooperates with tween drive shaft two ends square, and is fixed in the tween drive shaft two ends with bolt.Pedal axle 11 is a conventional confguration, pedal hinge wheel 9 and the pedal minor sprocket 10 that fuses is installed on it and is used chain 8 and middle minor sprocket 4, and sprocket wheel 2 broad in the middle connects flywheel 7 by chain 5, and flywheel can be to quicken to organize flywheels more.Also be provided with baffle plate 12 in pedal big minor sprocket outer end and sprocket wheel broad in the middle outer end and be fixed as one in order to keep off mud with screw 13 and vehicle frame.
During acceleration, middle minor sprocket is subjected to the moving sprocket wheel broad in the middle that is positioned at the tween drive shaft other end of the big minor sprocket through-coupling of pedal forward (FWD) to drive flywheel.Go up a slope in the time of need saving labour against the wind, sprocket wheel broad in the middle and middle minor sprocket exchanged on tween drive shaft, then the pedal minor sprocket directly conduction be positioned at the sprocket wheel broad in the middle of same end and then the middle minor sprocket transmission of transmission flywheel with laborsaving.
In a word, the utility model is simple in structure, saves labour, speed is fast, is a kind of desirable two-stage conduction variable speed bicycle.
Claims (3)
1, a kind of two-stage conduction variable speed bicycle, by vehicle frame, chain and flywheel are formed, it is characterized in that: the power conduction of bicycle is the two-stage conducting structure, the big minor sprocket of pedal drives the flywheel that fuses with bicycle rear by minor sprocket broad in the middle, also be provided with a tween drive shaft (3) on the vehicle frame, minor sprocket broad in the middle is positioned at the two ends of tween drive shaft, also is provided with hog frame between tween drive shaft and the back vehicle frame.
2, two-stage conduction variable speed bicycle according to claim 1 is characterized in that: the big minor sprocket of pedal drives middle minor sprocket (4) transmission that is positioned at tween drive shaft one end by chain (8) and is positioned at the sprocket wheel broad in the middle (2) of the tween drive shaft other end and drives flywheel by chain (5).
3, two-stage conduction variable speed bicycle according to claim 1, it is characterized in that: the tween drive shaft two ends are the square axle, and minor sprocket broad in the middle is positioned on the square axle, and minor sprocket broad in the middle is interchangeable on square shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97203055 CN2310007Y (en) | 1997-04-08 | 1997-04-08 | Two-stage transmission speed-changing bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97203055 CN2310007Y (en) | 1997-04-08 | 1997-04-08 | Two-stage transmission speed-changing bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2310007Y true CN2310007Y (en) | 1999-03-10 |
Family
ID=33924026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97203055 Expired - Fee Related CN2310007Y (en) | 1997-04-08 | 1997-04-08 | Two-stage transmission speed-changing bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2310007Y (en) |
-
1997
- 1997-04-08 CN CN 97203055 patent/CN2310007Y/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 |