CN2288915Y - Speed variator for bicycle - Google Patents
Speed variator for bicycle Download PDFInfo
- Publication number
- CN2288915Y CN2288915Y CN96210760.3U CN96210760U CN2288915Y CN 2288915 Y CN2288915 Y CN 2288915Y CN 96210760 U CN96210760 U CN 96210760U CN 2288915 Y CN2288915 Y CN 2288915Y
- Authority
- CN
- China
- Prior art keywords
- speed
- sprocket
- speed change
- 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.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
- B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
- B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
- B62M9/08—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving eccentrically- mounted or elliptically-shaped driving or driven wheel; with expansible driving or driven wheel
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmissions By Endless Flexible Members (AREA)
Abstract
The utility model relates to a speed changer for a bicycle, comprising a chain, a tensioning chainwheel and a driven chainwheel, wherein, a driving chainwheel of the utility model is composed of a speed changing disk, a plurality of small chainwheels and slide blocks used for fixing the small chainwheels; the speed changing disk is split into an inner and an outer two layers; a helical groove is arranged on a disk surface at the inner layer; the outer layer is provided with a slide way forming a radial shape; the inner ends of the slide blocks are embedded in the groove of the speed changing disk and the slide way; the small chainwheels are fixed on the slide blocks. The inner and the outer layers of the speed changing disk of the utility model can rotate correspondingly; the small chainwheels can stop at one position of the speed changing disk, and thus the utility model has the advantages of stepless and adjustable speed change whose process is smooth.
Description
The utility model has related to a kind of bicycle speed-varying unit.
Existing bicycle speed-varying unit, its drive sprocket or driven sprocket, adopt tower chain wheel set,, make chain and different sprocket engagement by gear shift fork, thereby changed transmitting ratio, realize the speed change purpose, its converter speed ratio is fixed, and belongs to step change, between level and the level span is arranged, make cyclist's discomfort.
The purpose of this utility model is to provide a kind of can realize infinite variable speed bicycle speed-varying unit.
The utility model comprises chain, idler sprocket, driven sprocket, its drive sprocket by speed change dish and several minor sprockets and fixedly the slide block of minor sprocket form, described speed change dish is divided into inside and outside two-layer, spiral groove from the center of circle to the edge is arranged on the internal layer card, skin then has some radial slideways from the center of circle to the edge, described slide block the inner has column cap to stretch in the groove of internal layer, and the middle part is embedded in the outer field slideway of speed change dish, is fixed with a minor sprocket on each slide block.Described minor sprocket is preferably 4～10.
Can relatively rotate between the utility model speed change dish inside and outside two-layer, thereby minor sprocket can move and be parked in a certain position of speed change dish along outer slideway, so its speed change is stepless adjustable, speed-change process is mild.
Below in conjunction with drawings and Examples the utility model is elaborated.
Fig. 1 is for being equipped with bicycle structure scheme drawing of the present utility model.
Fig. 2 is the utility model drive sprocket structural representation.
Fig. 3 is Fig. 2 lateral plan.
Fig. 4 is a helical groove scheme drawing on the internal layer card.
With reference to accompanying drawing, the utility model comprises chain (3), idler sprocket (2), driven sprocket (1), its drive sprocket by speed change dish and several minor sprockets (5) and fixedly the slide block of minor sprocket (4) form, described speed change dish is divided into inside and outside two-layer, spiral groove (9) from the center of circle to the edge is arranged on internal layer (8) card, on outer (6) some radial slideways (7) from the center of circle to the edge are arranged then, described slide block the inner is provided with in the groove (9) that column cap stretches into speed change dish internal layer, the middle part is embedded in the outer field slideway of speed change dish (7), fix a minor sprocket on each slide block, minor sprocket with 4～10 better.Can relatively rotate between the internal layer of speed change dish and the skin, the groove of speed change dish internal layer radially moves slide block in outer slideway, change the position of minor sprocket, thereby changes the effective diameter of drive sprocket, changes transmitting ratio, realizes speed change.In the practicality, can the sheet (10) of stopping go up be installed at speed change dish internal layer (8), when the sheet of stopping is checked speed change dish internal layer, pedal pedal, can relatively move between speed change dish internal layer and the skin, minor sprocket also changes relative position radially immediately, realizes speed change.
Claims (2)
1, a kind of bicycle speed-varying unit, comprise chain, idler sprocket, driven sprocket, its it is characterized in that drive sprocket by speed change dish and several minor sprockets and fixedly the slide block of minor sprocket form, described speed change dish is divided into inside and outside two-layer, spiral groove from the center of circle to the edge is arranged on the internal layer card, skin then has some radial slideways from the center of circle to the edge, described slide block the inner has column cap to stretch in the groove of internal layer, the middle part is embedded in the outer field slideway of speed change dish, is fixed with a minor sprocket on each slide block.
2, change-speed box as claimed in claim 1 is characterized in that described minor sprocket is 4～10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96210760.3U CN2288915Y (en) | 1996-05-04 | 1996-05-04 | Speed variator for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96210760.3U CN2288915Y (en) | 1996-05-04 | 1996-05-04 | Speed variator for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2288915Y true CN2288915Y (en) | 1998-08-26 |
Family
ID=33893929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96210760.3U Expired - Fee Related CN2288915Y (en) | 1996-05-04 | 1996-05-04 | Speed variator for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2288915Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114586508A (en) * | 2022-02-10 | 2022-06-07 | 河源市陈氏华兴农业发展有限公司 | Seeding speed adjusting mechanism and seeder |
-
1996
- 1996-05-04 CN CN96210760.3U patent/CN2288915Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114586508A (en) * | 2022-02-10 | 2022-06-07 | 河源市陈氏华兴农业发展有限公司 | Seeding speed adjusting mechanism and seeder |
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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 |