CN201406003Y - Bicycle gearbox - Google Patents
Bicycle gearbox Download PDFInfo
- Publication number
- CN201406003Y CN201406003Y CN2009200892249U CN200920089224U CN201406003Y CN 201406003 Y CN201406003 Y CN 201406003Y CN 2009200892249 U CN2009200892249 U CN 2009200892249U CN 200920089224 U CN200920089224 U CN 200920089224U CN 201406003 Y CN201406003 Y CN 201406003Y
- Authority
- CN
- China
- Prior art keywords
- gear
- transmission shaft
- transmission
- driving
- interference
- 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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- Gear-Shifting Mechanisms (AREA)
Abstract
The utility model belongs to the field of transportation, relates to a bicycle gearbox which is mainly characterized in that a foot crutch shaft which runs through a box body is provided with a driving gear which is constantly meshed with a driving interference gear on the middle part of an interference wheel spindle, the middle part of a transmission shaft is provided with a sliding gear which can be meshed with the driving interference gear in a sliding way, two ends of the transmission shaft are correspondingly sleeved with a driving gear which is constantly meshed with a driven interference gear on the interference wheel spindle, and the sliding gear is connected with transmission gear keys in a clutched way under the control of a shifting fork. Compared with the existing bicycle key wheel group disc gearbox, the bicycle gearbox has compact structure, fast and reliable shifting and speed changing, and convenient operation and maintenance.
Description
Technical field
The utility model belongs to the traffic technique field, relates to a kind of bicycle speed-varying unit.
Background technology
Existing a kind of bicycle speed-varying unit is to adopt multistage sliding chain wheels dish engagement shifting mechanism, neutral gear appears easily in the shift gap, chain jamming, change and do not perform, chain-taking, the chain drum of change-speed box and slip fluted disc are exposed to the outside in addition, and it is unreliable to exist shift, defectives such as operation and maintenance difficulty.
The utility model content
The designer is riding for many years with in the practice of bicycle, finds that bicycle speed-varying unit exists above-mentioned defective, and purpose is to provide quick reliable, the operation maintenance of a kind of gear shift bicycle speed-varying unit easily.
The technical scheme that the utility model adopted is a kind of bicycle speed-varying unit of design, its structure comprises: the pedal pin turns, pin turns axle, pin in passing casing top turns driving gear is set on the axle, driving gear and casing middle part is crossed and is initiatively crossed the gear constant-mesh on the wheel shaft, crosses that two ends are respectively provided to a few passive gear of crossing on the wheel shaft; At lower box transmission shaft is set, transmission shaft middle part be provided with can with initiatively cross the gear cliding gear of sliding engaged mutually, the transmission shaft two ends are respectively arranged with at least one transmission gear, transmission gear and the passive gear constant-mesh of crossing, and with transmission shaft mutually fit be rotationally connected; The transmission gear couple positioned opposite of cliding gear and both sides has clutch key and keyway; Fork slot is set on the cliding gear, and the driving lever of shift fork is connected with control handgrip line on the bicycle rack by casing; The transmission shaft mouth connects the chain dish.
Because the utility model has taked technique scheme and measure that existing bicycle speed-varying unit is improved, and compares with existing bicycle chain wheels dish speed-changing mechanism, has compact conformation, and is shifted quick, reliable, the convenient remarkable advantage that waits of operation maintenance.
Description of drawings
Fig. 1 represents the overall structure scheme drawing of the utility model bicycle speed-varying unit.
The specific embodiment
Reach embodiment in conjunction with the accompanying drawings, further specify the concrete structure of the utility model bicycle speed-varying unit, its feature and advantage are clearer.
The embodiment of the utility model bicycle speed-varying unit, referring to Fig. 1, its structure comprises: the pedal pin turns 1, pin turns axle 2 and casing 3, pin turns axle and 2 is located in casing 3 internal upper parts, and the pin casing 3 in turns on the axle 2 driving gear 4 is set, and driving gear 4 and casing 3 stage casings are crossed and initiatively crossed gear 6 constant-meshes on the wheel shaft 7, the passive gear 5 and 8 of crossing of two-stage is being set crossing on the wheel shaft 7, the passive gear 5 and 8 and initiatively to cross the number of teeth of gear 6 different of crossing; Transmission shaft 9 is set on the casing 3, cliding gear 11 and two- stage transmission gear 10,12 are set on the transmission shaft 9, wherein transmission gear 10,12 is crossed gear 5,8 constant-meshes with passive respectively, and is rotationally connected with transmission shaft 9 fits.Wherein cliding gear 11 adopts the clutch keyway to be connected with transmission shaft 9, cliding gear 11 can with initiatively cross gear 6 sliding engaged, clutch key 14 on the cliding gear 11 is meshed with keyway 13 on transmission gear 10 spokes, clutch key 17 on the transmission gear 12 is meshed with cliding gear 11 spokes keyway 16 outward, establish fork slot between cliding gear 11 and the keyway 15, the driving lever (not shown) of shift fork is connected with control handle line (not shown) on the cycle frame by casing 3, is used for controlling the shift fork action; Transmission shaft 9 mouths connect chain dish 18. Gear 4 and 6, gear 5 and 10, gear 8 and 12 are for often connecing idle running; When shift fork driven wheel 11 with can slide to gear 10,12 after 6 separate; Gear 10,12 not the time spent on transmission shaft 9, dally, shift fork is used in control, gear 11 is after 10 slide joint, gear 6 and opening in 11 minutes from gear 4 → 6 → 5 → 10 → 11 → transmission shaft 9, is done one grade of twirl; After using shift fork to make gear 11 and 6 engagements, gear 5 and 10, gear 8 and 12 idle running from gear 4 → 6 → 11 → transmission shaft 9, are done the second gear middling speed and are rotated; Use shift fork to make gear 11 after 12 slide joint, gear 5 and 10 idle running, gear 6 and opening in 11 minutes from gear 4 → 6 → 8 → 12 → 11 → transmission shaft 9, is done the third gear high speed rotating.
Claims (1)
1, a kind of bicycle speed-varying unit, comprise that the pedal pin turns, pin turns axle, it is characterized in that pin in passing casing top turns driving gear is set on the axle, driving gear and casing middle part is crossed and is initiatively crossed the gear constant-mesh on the wheel shaft, crosses that two ends are respectively provided to a few passive gear of crossing on the wheel shaft; At lower box transmission shaft is set, transmission shaft middle part be provided with can with initiatively cross the gear cliding gear of sliding engaged mutually, the transmission shaft two ends are respectively arranged with at least one transmission gear, transmission gear and the passive gear constant-mesh of crossing, and with transmission shaft mutually fit be rotationally connected; The transmission gear couple positioned opposite of cliding gear and both sides has clutch key and keyway; Fork slot is set on the cliding gear, and the driving lever of shift fork is connected with control handgrip line on the bicycle rack by casing; The transmission shaft mouth connects the chain dish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200892249U CN201406003Y (en) | 2009-03-17 | 2009-03-17 | Bicycle gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200892249U CN201406003Y (en) | 2009-03-17 | 2009-03-17 | Bicycle gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201406003Y true CN201406003Y (en) | 2010-02-17 |
Family
ID=41676930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200892249U Expired - Fee Related CN201406003Y (en) | 2009-03-17 | 2009-03-17 | Bicycle gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201406003Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104149923A (en) * | 2014-08-01 | 2014-11-19 | 李时太 | Labor-saving gear-speed-governing bicycle |
| CN105416503A (en) * | 2015-12-10 | 2016-03-23 | 孙福英 | Drive box for two-wheel motorcycle |
-
2009
- 2009-03-17 CN CN2009200892249U patent/CN201406003Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104149923A (en) * | 2014-08-01 | 2014-11-19 | 李时太 | Labor-saving gear-speed-governing bicycle |
| CN105416503A (en) * | 2015-12-10 | 2016-03-23 | 孙福英 | Drive box for two-wheel motorcycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |
Granted publication date: 20100217 Termination date: 20130317 |