CN2056658U - Speed changing bicycle driven by couble chains - Google Patents
Speed changing bicycle driven by couble chains Download PDFInfo
- Publication number
- CN2056658U CN2056658U CN 89212066 CN89212066U CN2056658U CN 2056658 U CN2056658 U CN 2056658U CN 89212066 CN89212066 CN 89212066 CN 89212066 U CN89212066 U CN 89212066U CN 2056658 U CN2056658 U CN 2056658U
- Authority
- CN
- China
- Prior art keywords
- chain wheel
- speed changing
- driven
- utility
- model
- 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.)
- Withdrawn
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- Transmission Devices (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The utility model relates to a speed changing bicycle driven by a double chain. The utility model is characterized in that a chain wheel the bicycle and a crank of the bicycle are riveted together; the chain wheel and a flange of a bearing pedestal are riveted together; the bearing pedestal is matched with a driving shaft with integral keys through screw threads; the utility model is still provided with a speed changing device and an operating mechanism. When a left chain wheel is in operation, the left chain wheel is driven by a middle shaft; after an operating lever returns, a shifting rocker is driven by a spring, a shifting sleeve with integral keys is shifted to the driving shaft with integral keys, and a right chain wheel is driven to operate. The utility model has the advantages of big mechanical strength of the speed changing device, long service life, simple structure, convenient operation, and low cost.
Description
The utility model belongs to traffic tool bicycle.
Common bicycle has only a chain at present, a speed threshold, and road grade is more just pedaled motionless, and high-grade sports car price is expensive, is not suitable for the rural area.
The purpose of this utility model is a kind of double-stranded variable speed bicycle that drives of design.
How to realize below in conjunction with the description of drawings the purpose of this utility model.
Accompanying drawing 1 is the drive mechanism device
Accompanying drawing 2 is monnolithic case figure
Sprocket wheel is so fixing, and sprocket wheel (1) is integral with the crank riveted, sprocket wheel (2) and bearing block (9) flange riveted, and bearing block (10) cooperates with screw thread and spline driving shaft (7).
Bearing and Five-way tube (30) are so fixing, the left side of Five-way tube (30) and bearing block (11) are screwed, bearing (12) is fixed on the axis (2), Five-way tube the right is screwed with bearing block, bearing (13) is fixed on the spline driving shaft (7), and spline driving shaft (7) empty set is on axis (2).
The structure of transmission system is such, middle male splines (14) has been located a native font spline sleeve (6), adorned one 7 font rocking arm (5) in the sliding sleeve groove, on five-way pipe lug, the other end of rocking arm connects with speed change steel rope (15) rocking arm by dowel fixes.
The structure of steering unit is such, joystick (16) one termination speed change steel ropes (15), and the other end is fixed on the axis of orientation (17).
The mode of motion of bicycle is such, in sprocket wheel (1) when work, is by axis (2) direct drive, during joystick (16) return, spring (4) affects gear shifting rocking arm (5), spline sleeve (6) is allocated on the spline axle drive shaft (7), motion is promptly passed to axis (2) by (7) and (6), and spline axis (14) and axis (2) are one.At this moment owing to the relation of transmitting ratio, key wheel (1) does not stress.Left side transmitting ratio is that 23Z:20Z the right transmitting ratio is 46Z:20Z.
The mechanical strength of the utility model speed-changing mechanism is big, and long service life is simple in structure, and is easy to operate, and cost is low.
Claims (1)
1, a kind of double-stranded variable speed bicycle that drives is characterized in that:
1., sprocket wheel (1) and crank riveted be integral, sprocket wheel (8) and bearing seat (9) flange riveted, bearing seat (10) cooperates with screw thread and spline axle drive shaft (7),
2., the left side of five-way pipe (30) and bearing seat (11) are screwed, bearing (12) is fixed on the axis (2), and five-way pipe the right is screwed with bearing seat, and bearing (13) is fixed on the spline axle drive shaft (7), spline axle drive shaft (7) sky is enclosed within on the axis (2)
3., middle male splines (14) located a native font spline sleeve (6), adorned one 7 font rocking arm (5) in the sliding sleeve groove, on five-way pipe lug, the other end of rocking arm connects with the speed change steel rope rocking arm by dowel fixes,
4., joystick (16) one ends, connect speed change steel rope (15), the other end is fixed on the axis of orientation (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89212066 CN2056658U (en) | 1989-01-14 | 1989-01-14 | Speed changing bicycle driven by couble chains |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89212066 CN2056658U (en) | 1989-01-14 | 1989-01-14 | Speed changing bicycle driven by couble chains |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2056658U true CN2056658U (en) | 1990-05-02 |
Family
ID=4868259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89212066 Withdrawn CN2056658U (en) | 1989-01-14 | 1989-01-14 | Speed changing bicycle driven by couble chains |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2056658U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371209C (en) * | 2004-04-02 | 2008-02-27 | 株式会社岛野 | Bicycle drive unit |
-
1989
- 1989-01-14 CN CN 89212066 patent/CN2056658U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371209C (en) * | 2004-04-02 | 2008-02-27 | 株式会社岛野 | Bicycle drive unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |