CN2244016Y - Man power speed transmission of road bicycle - Google Patents
Man power speed transmission of road bicycle Download PDFInfo
- Publication number
- CN2244016Y CN2244016Y CN 95239626 CN95239626U CN2244016Y CN 2244016 Y CN2244016 Y CN 2244016Y CN 95239626 CN95239626 CN 95239626 CN 95239626 U CN95239626 U CN 95239626U CN 2244016 Y CN2244016 Y CN 2244016Y
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- CN
- China
- Prior art keywords
- gear
- bicycle
- mesomerism
- speed
- speed ratio
- 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 a speed changer of a man-power road bicycle, comprising a speed-changing support frame which is fixed on the position of a middle axle of a bicycle frame; the middle axle of the bicycle passes through the speed-changing support frame in which a gear driving mechanism with variable speed ratio; the output end of the gear driving mechanism with the variable speed ratio is provided with a chainwheel which drives a rear axle of the bicycle to rotate via a chain. The utility model has the advantages of simple and compact structure, practicality, low noise, convenient manufacture and low cost.
Description
The utility model relates to trackless terrestrial vehicle, is a kind of driving device of wheeled car of rider driving, specifically, is a kind of speed-change gear of bicycle.The utility model also relates to mechanical drive, being a kind of gear system that is used for the variable-speed ratio conveying rotary motion, specifically, is the gear that a kind of use or main use can be thrown off, furtherly, be band remove can only axially movable removable gear gear change-speed gearing.
The existing chain-type bicycle speed-varying unit that generally uses, structure are comparatively complicated, damage easily, also are unsuitable for riding under relatively poor road conditions.
The purpose of this utility model provides a kind of simple in structure, compact practical, the manpower road cycling change-speed box that noise is low, cost is low.
Technical solution of the present utility model is: a kind of manpower road cycling change-speed box, adopted the design that is different from prior art: a transmission support bracket that is fixed on the vehicle frame of bicycle middle shaft position is arranged, bicycle middle shaft passes transmission support bracket, the gear drive of variable-speed ratio is housed in the transmission support bracket, and the gear drive mouth of variable-speed ratio is equipped with by chain and drives the sprocket wheel that bicycle rear axle rotates.
A driving gear of fixing with bicycle middle shaft is arranged in the gear drive of the variable-speed ratio described in the utility model, driving gear and the converter speed ratio mesomerism gear engagement of moving conversion, mesomerism gear meshes with driven gear again, and aforementioned sprocket wheel is housed on the driven gear shaft.Certainly, the gear drive of variable-speed ratio also can adopt other suitable versions.
Mesomerism gear described in the utility model comprises two groups of gears that the number of teeth is different, and two groups of mesomerism gears are loaded on the chute support of energy parallel motion, and the chute support promotes the location by one group of foot-operated simultaneous locating mechanism.Certainly, also can adopt other suitable versions.
Foot-operated simultaneous locating mechanism described in the utility model is two and lays respectively at aforementioned chute support two ends, vertically moving locating dowel pin, and locating notch is arranged at locating dowel pin top, and the locating dowel pin bottom is useful on the inclined-plane that promotes chute support termination.Certainly, also can adopt other suitable versions.
Transmission support bracket described in the utility model is box-like closed type structure.Certainly, also can adopt other suitable versions.
The utility model has the advantages that: simple in structure, practical, easily manufactured, cost is low.Compared by incorporate open architectures such as change-speed box, big gear wheel, handle vertical tubes with existing, compact conformation, transmission device are not subject to the erosion of rainwater, dust; Compare with the change-speed box of planetary drive mechanism, the utility model can reduce the friction and the noise of non-effective operation transmission component owing to adopt the component form of simply connected transmission; Compare with the box multi-speed gear box of gear, owing to adopt quick two grades of Chang Suyu, simple and practical.The utility model is drawn materials conveniently, and applicability is strong.
The utility model is described in further detail below in conjunction with drawings and Examples:
Accompanying drawing is the structural representation of a kind of manpower road cycling change-speed box of the present utility model.
Accompanying drawing has been described an embodiment of the present utility model.A transmission support bracket 1 that is fixed on the vehicle frame of bicycle middle shaft position is arranged in this example, and transmission support bracket 1 adopts box-like closed type structure.Bicycle middle shaft 2 passes transmission support bracket 1, on bicycle middle shaft 2, be fixed with a driving gear 3, driving gear 3 can rotate with the rotation of the bicycle middle shaft 2 that is driven by the bicycle pedals crank, a mesomerism gear chute support 4 that can move as horizontal direction also is housed in transmission support bracket 1, two groups of mesomerism gears 5 are housed on the mesomerism gear chute support 4,10, mesomerism gear 5,10 the number of teeth has nothing in common with each other, along with moving of chute support 4, two groups of mesomerism gears 5,10 can mesh with driving gear 3 respectively and throw off, thereby produce different transmission speed ratios, mesomerism gear 5,10 are meshing with driven gear 7 respectively again with driving gear 3 engagements or when throwing off or are throwing off, driven gear 7 is loaded on the driven gear shaft 6 in the transmission support bracket 1, driven gear shaft 6 other ends then are equipped with sprocket wheel 8, and sprocket wheel 8 drives bicycle rear axle by chain again and rotates.The modulus of driving gear, driven gear, mesomerism gear is the straight-tooth gear of m=2 or m=1.5, certainly, also can select other suitable moduluses.Initiatively, driven gear tooth top circle spacing is less than mesomerism gear tooth top circle diameter, greater than the mesomerism gear radius of addendum.The number of teeth of each gear is selected according to being: driving gear whenever rotates a circle, the theoretical operation of bicycle quick 4.5-5 rice is Chang Su, and operation 6-6.5 rice is fast, with this radix that calculates as driving and driven gear and mesomerism gear etc., certainly, also can adopt other suitable speed ratio numerical value.Vertically moving locating dowel pin 9,11 also is housed on the transmission support bracket 1 at mesomerism gear chute support 4 two ends, locating notch is arranged at locating dowel pin 9,11 tops, in order to transmission support bracket 1 on corresponding positioning convex thing contact the location, locating dowel pin 9,11 bottoms are useful on the inclined-plane that promotes chute support 4 terminations, and locating dowel pin 9,11 lower ends also have the uncinus that can hook chute support 4 terminations.Two locating dowel pin 9,11 upper ends also are connected with extension spring, and when when foot-operated, a locating dowel pin descends, and then another locating dowel pin rises, thereby finish two groups of mesomerism gears 5,10 with driving and driven gear meshing or throw off conversion, the transmission of realization second gear speed change.
Claims (5)
1, a kind of manpower road cycling change-speed box, it is characterized in that: a transmission support bracket that is fixed on the vehicle frame of bicycle middle shaft position is arranged, bicycle middle shaft passes transmission support bracket, the gear drive of variable-speed ratio is housed in the transmission support bracket, and the gear drive mouth of variable-speed ratio is equipped with by chain and drives the sprocket wheel that bicycle rear axle rotates.
2, manpower road cycling change-speed box according to claim 1, it is characterized in that: a driving gear of fixing with bicycle middle shaft is arranged in the gear drive of described variable-speed ratio, driving gear and the converter speed ratio mesomerism gear engagement of moving conversion, mesomerism gear meshes with driven gear again, and aforementioned sprocket wheel is housed on the driven gear shaft.
3, manpower road cycling change-speed box according to claim 2, it is characterized in that: described mesomerism gear comprises two groups of gears that gear is different, two groups of mesomerism gears are loaded on the chute support of energy parallel motion, and the chute support is by one group of foot-operated synchronization bit mechanism urges location.
4, manpower road cycling change-speed box according to claim 3, it is characterized in that: described foot-operated simultaneous locating mechanism is two and lays respectively at aforementioned chute support two ends, vertically moving locating dowel pin, locating notch is arranged at locating dowel pin top, and the locating dowel pin bottom is useful on the inclined-plane that promotes chute support termination.
5, according to claim 1 or 2,3,4 described manpower highways change-speed box voluntarily, it is characterized in that: described transmission support bracket is box-like closed type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95239626 CN2244016Y (en) | 1995-04-19 | 1995-04-19 | Man power speed transmission of road bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95239626 CN2244016Y (en) | 1995-04-19 | 1995-04-19 | Man power speed transmission of road bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2244016Y true CN2244016Y (en) | 1997-01-01 |
Family
ID=33881368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95239626 Expired - Fee Related CN2244016Y (en) | 1995-04-19 | 1995-04-19 | Man power speed transmission of road bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2244016Y (en) |
-
1995
- 1995-04-19 CN CN 95239626 patent/CN2244016Y/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 |