CN2193317Y - Speed variator of bicycle - Google Patents
Speed variator of bicycle Download PDFInfo
- Publication number
- CN2193317Y CN2193317Y CN 94208781 CN94208781U CN2193317Y CN 2193317 Y CN2193317 Y CN 2193317Y CN 94208781 CN94208781 CN 94208781 CN 94208781 U CN94208781 U CN 94208781U CN 2193317 Y CN2193317 Y CN 2193317Y
- Authority
- CN
- China
- Prior art keywords
- gear
- gears
- bicycle
- feather key
- axis
- 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
Links
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- Transmission Devices (AREA)
Abstract
The utility model relates to a speed variator of the bicycle. A driving gear inlaid on a center shaft is engaged with three driven gears riveted together with different diameters, and the three driven gears are inlaid on the rear fork of the bicycle; the driven gears are engaged with two slide gears on the center shafts, and thus three gears on the center shafts rotate at different speeds; a sprocket at the inner side of the three gears is provided with a controllable slide key. Under the action of a lever, a lacing wire which is manipulated by a bicyclist can be freely connected with the three gears with different speeds to change speed. The utility model has a short chain and compact structure, and can be installed in a chain box.
Description
The utility model relates to a kind of derailleur, particularly a kind ofly has variable gear and does not increase the transmission system of chain length.
The existing market variable speed bicycle mostly is ten speed, with several sprocket wheels to the different numbers of teeth, through the transmission of chain, realizes speed change.Because sprocket wheel is many, the chain lengthening, complex process, cost increases.And in daily life, except that the contest specific (special) requirements, general civilian bicycle has high, medium and low three gears can satisfy use.This will significantly reduce part, simplify technology, cost-cutting.
The invention the purpose of this utility model is that a kind of variable gear that has will be provided, and does not increase chain length, and volume is little, and variable three-speed derailleur is realized high, medium and low three class gear shift.
The utility model is finished with following method: fixing a driving gear on bicycle middle shaft, it and the driven gear that is set on the back fork of bicycle mesh, on driven gear again riveted two gears that diameter is different, with two cliding gears engagements that revert on the axis, form three rotating speeds that gear is different respectively.In the inboard of three gears of axis a sprocket wheel is arranged, controlled feather key is housed on the sprocket wheel, can be respectively be connected, thereby make sprocket wheel can become three speed with any of gear of three different rotating speeds on the axis.Moving of controlled feather key controlled by the cyclist with lacing wire by a lever.Because the variable gear compactness, chain is short, and whole transmission system can be contained in the chain cover.
Below in conjunction with accompanying drawing this device is described in detail:
Fig. 1 is the assembly drawing of this device
With reference to Fig. 1, driving gear on the axle for bicycle＜1〉is fixing together by key＜9〉and axis, on the axle＜18〉that back fork of bicycle is being inlayed, three driven gears＜2〉＜3〉＜4〉that diameter is different are arranged, driving gear＜1〉and driven gear＜2〉engagement, driven gear＜3〉＜4〉are meshed with the cliding gear＜5〉＜6〉that revert on the axis respectively again.Therefore the axis just rotating speed difference of＜1〉＜5〉＜6〉that cogs.A featherway is all arranged on gear＜1〉＜5〉＜6 〉, can allow controlled feather key＜7〉pass through or the embedding transferring power.There is a sprocket wheel＜13〉inboard of three gears on axis, fixing on it controlled feather key＜7〉it by the displacement of controlled feather key＜7 〉, can be connected with gear＜6〉＜5〉＜1〉arbitrarily, because these three gear speed differences, so sprocket wheel just can be realized three class gear shift.The evolution of controlled feather key＜7〉is handled by the cyclist by lacing wire＜16〉and spring＜17〉by lever＜15 〉.
Claims (4)
1, one to be fixed on driving gear＜1 on the bicycle middle shaft 〉.Riveting driven gear＜2 together〉＜3＜4, return gear＜5＜6, sprocket wheel＜13, controlled feather key＜7, lever＜15, lacing wire＜16, spring＜17 derailleur formed, it is characterized in that driving gear＜1 on the axis〉and flower wheel＜2 engagement, in flower wheel＜2〉on the different gear of diameter＜3 of riveting over again＜4, flower wheel is by axle＜18 that are set on the back fork of bicycle〉supporting.
2, by the described derailleur of claim 1, it is characterized in that driven gear＜3〉＜4〉again respectively with axis on recurrence cliding gear＜5〉＜6〉engagement.
3, by the described derailleur of claim 1, it is characterized in that: controlled feather key＜7〉is housed on the sprocket wheel that slides on the axis＜13 〉, by moving of feather key＜7 〉, sprocket wheel＜13〉can be arbitrarily and gear＜6〉＜5〉＜1〉connect the realization three class gear shift.
4, by the described derailleur of claim 1, it is characterized in that: controlled feather key＜7〉is to rely on lever＜15〉to change gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94208781 CN2193317Y (en) | 1994-04-12 | 1994-04-12 | Speed variator of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94208781 CN2193317Y (en) | 1994-04-12 | 1994-04-12 | Speed variator of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2193317Y true CN2193317Y (en) | 1995-03-29 |
Family
ID=33826679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94208781 Expired - Fee Related CN2193317Y (en) | 1994-04-12 | 1994-04-12 | Speed variator of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2193317Y (en) |
-
1994
- 1994-04-12 CN CN 94208781 patent/CN2193317Y/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 |