CN201300960Y - Variable speed box on bicycle - Google Patents
Variable speed box on bicycle Download PDFInfo
- Publication number
- CN201300960Y CN201300960Y CNU2008201670458U CN200820167045U CN201300960Y CN 201300960 Y CN201300960 Y CN 201300960Y CN U2008201670458 U CNU2008201670458 U CN U2008201670458U CN 200820167045 U CN200820167045 U CN 200820167045U CN 201300960 Y CN201300960 Y CN 201300960Y
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- China
- Prior art keywords
- shelves
- gear
- drive shaft
- tween drive
- transfer clutch
- 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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- 229920000136 polysorbate Polymers 0.000 description 18
- 230000005540 biological transmission Effects 0.000 description 9
- 230000006378 damage Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model discloses a variable speed box on a bicycle, which comprises a box body (1), a centre shaft (2) and a drive sprocket wheel (14). An intermediate shaft (5) and an output shaft (10) are also arranged on the box body (1); a driving gear (3) is fixed on the centre shaft (2); a transmission gear (4), a one-step speed control gear (8) and a two-step speed control gear (6) are arranged on the intermediate shaft (5); the transmission gear (4) is in tight fit with the intermediate shaft (5); the one-step speed control gear (8) and the two-step speed control gear (6) are in movable fit with the intermediate shaft (5); a one-step driven gear (9) and a two-step driven gear (11) are fixedly arranged on the output shaft (10); the driving gear (3) is meshed with the transmission gear (4); the one-step speed control gear (8) and the two-step speed control gear (6) are sequentially meshed with the one-step driven gear (9) and the two-step driven gear (11); and a speed-governing selector mechanism is arranged on the intermediate shaft (5). Because of the structure, the variable speed box has the advantages of simple and reasonable structure, convenient speed governing, high transmission efficiency, long service life, safety and reliability, elegant appearance, etc.
Description
Technical field
The utility model relates to a kind of transmission system, particularly a kind of gear-driving speed-variable device that is used on the bicycle.
Background technology
Bicycle just is subjected to liking of each people of stratum as the most basic running vehicle of people always, and lasting in the whole world, almost everyone once had one even many bicycles in developmental process.Standard bicycle is by adopting back-wheel drive, and crank and chain-wheel, axis are arranged on the vehicle frame between the front and back wheel, drive bicycle by chain gear and advance.And present bicycle is also being brought in constant renewal in and is being improved in evolution, and the corresponding product of the various and suitable all ages and classes section of selling on the market emerges in an endless stream, as steamboat footpath bicycle, collapsible steamboat footpath bicycle or the like; Steamboat footpath bicycle and collapsible steamboat footpath bicycle because in light weight, deposit with easy to carry, price is low and extremely teenager, young woman and clan owning cars crowd's welcome.But steamboat footpath bicycle but has the following disadvantages: the one, because wheel is little, and a foot-operated circle, the bicycle walking distance has only below 3.4 meters, and bicycle pedals one circle usually, but 5.4 meters of travel distances, the efficient of riding is low, speed is slow; The 2nd, cause cyclist's the bottom of s trouser leg or skirt to be involved in easily and clamp, cause unnecessary damage and injury; The 3rd, driving chain wheel is big, and is inharmonious with car load, directly influences the attractive in appearance of product.For this reason, many manufacturers and knowledgeable people research and develop at the problems referred to above, but do not have comparatively ideal product to emerge so far as yet.
Summary of the invention
For overcoming the weak point of above-mentioned existence, the purpose of this utility model provide a kind of simple and reasonable, driving efficiency is high, the derailleur of long service life, safe and reliable, elegant in appearance and adjustable speed.
The technical scheme that its technical matters that solves the utility model adopts, it comprises casing, axis, driving chain wheel, axis is arranged on the casing, also is provided with tween drive shaft and output shaft on the described casing, is fixed with driving gear on the axis; Tween drive shaft is provided with transmission gear, I shelves and II shelves governor gear, transmission gear and tween drive shaft flush fit, I shelves and II shelves governor gear and tween drive shaft running-fit; Be fixed with I shelves, II shelves driven gear on the output shaft; Driving gear and transmission gear engagement, I shelves and II shelves governor gear are meshed with I shelves and II shelves driven gear successively; On tween drive shaft, be provided with the speed governing gearshift that matches with I shelves and II shelves governor gear.
Described speed governing gearshift comprises power-transfer clutch piece, stage clip and push rod, the power-transfer clutch piece is set on the tween drive shaft and bearing fit, push rod is arranged on a side of tween drive shaft centre hole, the one end stretches out casing, the other end is connected with the power-transfer clutch piece by latch, opposite side at the tween drive shaft centre hole is provided with stage clip and plus-minus screw, and the stage clip roof pressure is on push rod.
One side of described power-transfer clutch piece cooperates with I shelves governor gear, and opposite side cooperates with II shelves governor gear.
Described driving chain wheel is fixedly installed on the output shaft.
After adopting said structure, following advantage and effect are arranged compared with prior art, the one, in casing, adopt gear transmission to realize two grades of speed changes, driving efficiency height, high lubricating effect by two grades of speed changes, adapt to the requirement of different crowd and friction speed, the wheel footpath is more little, and its advantage is outstanding more; The 2nd, driving chain wheel can be designed to consistent or close with the back flying wheel, can avoid cyclist's the bottom of s trouser leg or skirt to be involved in the accident generation of clamping easily with the cover cap sealing.The 3rd, there has not been big driving chain wheel, car load is coordinated more, and product is elegant in appearance.
Description of drawings
Fig. 1 is a contour structures scheme drawing of the present utility model.
Fig. 2 is the A-A cross-sectional view of Fig. 1.
The specific embodiment
Illustrated in figures 1 and 2, specific embodiments for a kind of derailleur of the utility model, it comprises casing 1, axis 2, driving chain wheel 14, axis 2 is arranged on the casing 1 by bearing, also be provided with tween drive shaft 5 and output shaft 10 by bearing on the described casing 1, be fixed with driving gear 3 on the axis 2; Tween drive shaft 5 is provided with transmission gear 4, I shelves and II shelves governor gear 8,6, transmission gear 4 and tween drive shaft 5 flush fits, I shelves and II shelves governor gear 8,6 and tween drive shaft 5 running-fits; Be fixed with I shelves and II shelves driven gear 9,11 on the output shaft 10, driving chain wheel 14 is fixedly installed on the output shaft 10; Driving gear 3 and transmission gear 4 engagements, I shelves and II shelves governor gear 8,6 mesh with I shelves and II shelves driven gear 9,11 successively; On tween drive shaft 5, be provided with the speed governing gearshift that matches with I shelves and II shelves governor gear 8,6.
Described speed governing gearshift comprises power-transfer clutch piece 7, stage clip 13 and push rod 16, power-transfer clutch piece 7 is set on the tween drive shaft 5 and by spending strong bearing fit, push rod 16 is arranged on a side of tween drive shaft 5 centre holes, the one end stretches out casing 1, the other end is connected with power-transfer clutch piece 7 by latch 17, opposite side at tween drive shaft 5 centre holes is provided with stage clip 13 and plus-minus screw 12, and stage clip 13 roof pressures are on push rod 16; One side of power-transfer clutch piece 7 cooperates with I shelves governor gear 8, and opposite side cooperates with II shelves governor gear 6.
When the utility model uses, captive joint with front vehicle frame or be hinged in the front portion of casing 1, captive joint with the back vehicle frame in its rear portion, the foot-operated two ends that are installed in axis 2, driving chain wheel 14 is connected with the flywheel of trailing wheel by chain, driving chain wheel can be designed to the back flying wheel one to or close, can seal with cover cap easily; Speed control switch is installed on the handle and twists the bar 16 that bears down on one by soft strap dynamic pressure piece 15 and realize speed change.During normal the use, because stage clip 13 roof pressures are on push rod 16, power-transfer clutch piece 7 engages with I shelves governor gear 8 under push rod 16 drives, the type of drive of this moment is that the driving gear 3 drive transmission gears 4 on the axis 2 make tween drive shaft 5 rotations, tween drive shaft 5 drives I shelves governor gear 8 by power-transfer clutch piece 7 and rotates, I shelves governor gear 8 drives driving chain wheel 14 output high rotational speed by I shelves driven gear 9, output shaft 10 again, and then, advance with fast speeds thereby drive bicycle by the rotation of chain drive trailing wheel.When the slower speed of needs, operation is installed in the speed control switch on the handle and twists the bars 16 that bear down on one by soft strap dynamic pressure piece 15, push rod 16 overcomes and drives power-transfer clutch piece 7 behind the elastic force of stage clip 13 and engage with II shelves governor gear 6, II shelves governor gear 6 II shelves driven gear 11, output shaft 10 again drives the slower rotating speed of driving chain wheel 14 outputs, and then by the rotation of chain drive trailing wheel, advance with slower speed thereby drive bicycle, thereby make bicycle realize two grades of speed changes.
Claims (4)
1, a kind of derailleur, comprise casing (1), axis (2), driving chain wheel (14), axis (2) is arranged on the casing (1), it is characterized in that: also be provided with tween drive shaft (5) and output shaft (10) on the described casing (1), be fixed with driving gear (3) on the axis (2); Tween drive shaft (5) is provided with transmission gear (4), I shelves and II shelves governor gear (8,6), transmission gear (4) and tween drive shaft (5) flush fit, I shelves and II shelves governor gear (8,6) and tween drive shaft (5) running-fit; Be fixed with I shelves and II shelves driven gear (9,11) on the output shaft (10); Driving gear (3) and transmission gear (4) engagement, I shelves and II shelves governor gear (8,6) mesh with I shelves and II shelves driven gear (9,11) successively; On tween drive shaft (5), be provided with the speed governing gearshift that matches with I shelves and II shelves governor gear (8,6).
2, derailleur according to claim 1, it is characterized in that: described speed governing gearshift comprises power-transfer clutch piece (7), stage clip (13) and push rod (16), power-transfer clutch piece (7) is set in tween drive shaft (5) and goes up and bearing fit, push rod (16) is arranged on a side of tween drive shaft (5) centre hole, the one end stretches out casing (1), the other end is connected with power-transfer clutch piece (7) by latch (17), opposite side at tween drive shaft (5) centre hole is provided with stage clip (13) and plus-minus screw (12), and stage clip (13) roof pressure is on push rod (16).
3, derailleur according to claim 2 is characterized in that: a side of described power-transfer clutch piece (7) cooperates with I shelves governor gear (8), and opposite side cooperates with II shelves governor gear (6).
4, according to claim 2 or 3 described derailleurs, it is characterized in that: described driving chain wheel (14) is fixedly installed on the output shaft (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201670458U CN201300960Y (en) | 2008-10-28 | 2008-10-28 | Variable speed box on bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201670458U CN201300960Y (en) | 2008-10-28 | 2008-10-28 | Variable speed box on bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201300960Y true CN201300960Y (en) | 2009-09-02 |
Family
ID=41084580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201670458U Expired - Fee Related CN201300960Y (en) | 2008-10-28 | 2008-10-28 | Variable speed box on bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201300960Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030073A (en) * | 2010-12-10 | 2011-04-27 | 徐志安 | Centre shaft four-speed transmission for bicycle |
| CN108487995A (en) * | 2018-01-30 | 2018-09-04 | 重庆科马工贸有限公司 | A kind of governor gear component |
-
2008
- 2008-10-28 CN CNU2008201670458U patent/CN201300960Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030073A (en) * | 2010-12-10 | 2011-04-27 | 徐志安 | Centre shaft four-speed transmission for bicycle |
| CN102030073B (en) * | 2010-12-10 | 2013-05-01 | 徐志安 | Centre shaft four-speed transmission for bicycle |
| CN108487995A (en) * | 2018-01-30 | 2018-09-04 | 重庆科马工贸有限公司 | A kind of governor gear component |
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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: 20090902 Termination date: 20101028 |