CN200967532Y - Speed-transformation device for multi-speed roadster - Google Patents
Speed-transformation device for multi-speed roadster Download PDFInfo
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- CN200967532Y CN200967532Y CN 200620064168 CN200620064168U CN200967532Y CN 200967532 Y CN200967532 Y CN 200967532Y CN 200620064168 CN200620064168 CN 200620064168 CN 200620064168 U CN200620064168 U CN 200620064168U CN 200967532 Y CN200967532 Y CN 200967532Y
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- sprocket wheel
- foot
- transmission system
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Abstract
This invention relates to a speed transmission of a bicycle with a gearshift with the speed transmission installed in a sprocket wheel. The speed transmission contains a sprocket wheel arm with one end fixed to the sprocket wheel, a pedal arm rotatably installed in the other end of the sprocket wheel and an elastic structure and an elastic resetting device connecting between the pedal arm and the sprocket wheel arm. The elastic structure contains a hydraulic link rod between the pedal arm and the sprocket wheel arm. The elastic resetting device contains a tension spring or a torsional spring installed between the sprocket wheel arm and the pedal arm. The hydraulic link rod contains an external drum for the storage of hydraulic oil and an internal drum sliding reversely to the external drum. The speed transmission of the bicycle with a gearshift has the advantages of that the speed transmission makes the bicycle easier to speed up from the starting to the greatest speed than other bicycles and when uprising, the bicycle with such a speed transmission can save the force through an auto deceleration and when returning to the level road the bicycle will auto speed up, which can save 20% of the force to ride than the traditional bicycle.
Description
Technical field
The utility model relates to a kind of transmission system of variable speed bicycle.
Background technology
The transmission system of variable speed bicycle commonly used is an a kind of group of chain transmission system at present.The speed change pull bar is dialled chain to hinge wheel or minor sprocket by shift cable pulling group chain device during speed change.In use because ordinary wear and tear, the pitch of chain increases, and often the sprocket that uses is allocated to chain in the sprocket wheel that does not often use apart from increase thereupon this moment again, because chain pitch and sprocket are jumped chain, taken off the chain phenomenon apart from inconsistent appearance, can't use when serious to cause scrapping during use.Because it is more to dial chain type speed change cone pulley sheet number, the gap is less mutually, and chain design is narrower, and is more very fast than common chain wear, shortened service life more, dials the chain speed change and occurs the chain jamming phenomenon easily, even even dial the chain device and together block bad.
There is above-mentioned shortcoming owing to dial the chain transmission system, application number need not dialled the transmission system that chain changes the variable speed bicycle of sprocket wheel for 200310113949.4 patent of invention provides a kind of, it is that support is set in bicycle, slideway is set in the support, the sprocket wheel that slide block and gear piece constitute the energy radial expansion is set in the slideway, utilize the variation of sprocket diameter to realize speed change, and can realize automatic speed changing.Though this transmission system need not dialled chain and change sprocket wheel and just can realize bicycle shift, its shortcoming is to realize speed change by the change chain wheel diameter, and in order to make sprocket wheel on a circumference, quality of fit requires height and complex structure, cost height.
Summary of the invention
The purpose of this invention is to provide and a kind ofly with arm of force distance between the sprocket wheel arm radius of foot-operated rotation is changed and the transmission system of a kind of variable speed bicycle of generation speed and stressed change by changing foot-operated arm.
A kind of transmission system of variable speed bicycle, transmission system is installed on the sprocket wheel, and transmission system comprises that an end is fixed on the sprocket wheel arm on the sprocket wheel and is installed in rotation on the foot-operated arm on the sprocket wheel arm other end and is connected telescoping mechanism and elasticity reset device between foot-operated arm and the sprocket wheel arm.No matter existing is the bicycle of variable speed bicycle or non-speed change, stretcher fixes on the two ends of bent axle, and bent axle is fixed on the shaft core position of sprocket wheel, and the stretcher arm of force relative and centre of sprocket is immutable, makes the foot-operated radius that rotates immutable.Principle of work of the present utility model is because foot-operated arm and the opening and closing under the effect of telescoping mechanism and elasticity reset device of sprocket wheel arm, distance between stretcher and the centre of sprocket axle is changed, the foot-operated radius that rotates is changed, thus generation speed and stressed change.When bicycle was in normal condition, as travelling on the level land, the two ends of wall and sprocket wheel arm were ridden in the elasticity reset device tension, and stretcher is minimum to the distance between the centre of sprocket axle, and bicycle speed is the fastest; When bicycle goes up a slope or when starting, resistance increases, and makes the telescoping mechanism elongation, and the foot-operated relative sprocket wheel arm of arm opens, and increases stretcher to the distance between the centre of sprocket, and foot-operated radius increases, and the rotating speed of bicycle reduces, and reaches upward slope labour-saving purpose.When the resistance that acts on bicycle reduces, travel as getting back on the level road again, telescoping mechanism can reset under the effect of elasticity reset device, telescoping mechanism shortens, the foot-operated relative sprocket wheel arm of arm condensation, reduce stretcher to the distance between the centre of sprocket, foot-operated radius reduces, and increases the speed of bicycle.The speed reduction gearing of this structure by changing foot-operated radius, reaches the self-shifting purpose, need not dial chain and change sprocket wheel, and motion is reliable and the life-span is long; Do not need to come speed change by the size that changes sprocket diameter yet, thus not high to accuracy requirement, and simple in structure, cost is low.
As improvement, telescoping mechanism comprises the hydraulic connecting rod that is connected between foot-operated arm and the sprocket wheel arm, and elasticity reset device comprises the extension spring that is connected between sprocket wheel arm and the foot-operated arm, and hydraulic connecting rod comprises the urceolus that stores hydraulic oil and inner core that can relative urceolus slip.Adopt the telescopic structure of hydraulic connecting rod, hydraulic connecting rod has a buffer action when speed change, can prevent that speed change is too fast.The extension spring structure not only can reach the active homing purpose, and simple in structure.
As further improvement, telescoping mechanism comprises the hydraulic connecting rod that is connected between foot-operated arm and the sprocket wheel arm, hydraulic connecting rod comprises the urceolus that stores hydraulic oil and the inner core that can relative urceolus slides, elasticity reset device comprise on the urceolus tube arm that is connected hydraulic connecting rod with foot-operated arm on extension spring.Extension spring is installed on the hydraulic pressure restoring link, makes compact conformation.
As further improving again, telescoping mechanism comprises the hydraulic connecting rod that is connected between foot-operated arm and the sprocket wheel arm, hydraulic connecting rod comprises the urceolus that stores hydraulic oil and the inner core that can relative urceolus slides, elasticity reset device comprises the torsion spring that is installed in foot-operated arm and sprocket wheel arm connection location, and torsion spring makes the speed-changing mechanism compactness.
Common improvement as such scheme, on two foot-operated arms, also be provided with chute, transmission system also comprises trammel beam, trammel beam comprises a rotating shaft and is located at the pivoted arm at rotating shaft two ends, pivoted arm places the both sides and the symmetrical configuration of rotating shaft, and rotating shaft is articulated in the central through hole of sprocket shaft, and the end away from rotating shaft on the trammel beam pivoted arm is provided with protruding axle, the protruding axle axle center of two pivoted arms equates that to the distance between the pivoted arm axle center protruding axle places in the chute slidably.Trammel beam makes two stretchers keep synchronous effect in motion process.
As improvement, on elasticity reset device, also be provided with the mechanism of manual regulation spring force size, regulate distance between the telescoping mechanism by the size of manual regulation spring force, thereby change stretcher, reach speed-raising or labour-saving purpose to the arm of force distance between the centre of sprocket.
As further improvement, sprocket wheel arm and foot-operated arm are articulated by rotatable bearing, are convenient to the mutual rotation between sprocket wheel arm and the foot-operated arm.
The advantage of the transmission system of this variable speed bicycle is that to make bicycle reach maximum speed from starting easier than Regular Bicycle, and can come laborsaving by automatic deceleration when going up a slope, again can auto acceleration when getting back to level road, the same method of riding can be than traditional bicycle labor saving more than 20%.
Description of drawings
Fig. 1 makes the structural representation of the utility model bicycle.
Fig. 2 is the structural representation of the utility model embodiment 1 speed-changing mechanism
Fig. 3 is the structural representation of the utility model embodiment 2 speed-changing mechanisms
The specific embodiment
As depicted in figs. 1 and 2,, a kind of variable speed bicycle transmission system, transmission system is installed on the sprocket wheel 1, and transmission system comprises that an end is fixed on the sprocket wheel arm 2 on the sprocket wheel 1 and is articulated in foot-operated arm 4 on sprocket wheel arm 2 other ends, is connected telescoping mechanism, the elasticity reset device between foot-operated arm 4 and the sprocket wheel arm 2 and is located at the trammel beam of sprocket wheel arm 2 both sides by rotatable bearing 3.Telescoping mechanism comprises the hydraulic connecting rod that is connected between foot-operated arm 4 and the sprocket wheel arm 2, hydraulic connecting rod comprises the urceolus 5 that stores hydraulic oil and the inner core 6 that can relative urceolus 5 slides, one end of urceolus 5 is installed in an end of close sprocket wheel 1 on the sprocket wheel arm 2, and an end of inner core 6 is installed in an end of close stretcher 7 on the foot-operated arm 4.Elasticity reset device comprises the extension spring 8 that is connected between sprocket wheel arm 2 and the foot-operated arm 4, the mechanism of manual regulation spring force size comprises adjust bar 9 that is installed on the sprocket wheel arm 2 and the adjustable knob 10 that is installed on the adjust bar 9, and adjust bar 9 is installed in an end at close sprocket wheel 1 center on the sprocket wheel arm 2; One end of extension spring 8 is hinged on the end of foot-operated arm 4 near stretcher 7, and the other end of extension spring 8 is installed on the adjustable knob 10.9 motions of adjusting knob 10 relative adjustment bars, the size of scalable extension spring 8 elastic force, thereby the distance of change telescoping mechanism just change foot-operated radius.On two foot-operated arms 4, also be provided with chute 11, transmission system also comprises trammel beam, trammel beam comprises a rotating shaft 13 and is located at the pivoted arm 12 at rotating shaft 13 two ends, pivoted arm 12 places the both sides and the symmetrical configuration of rotating shaft 13, rotating shaft 13 is articulated in the central through hole of sprocket shaft 14, end away from rotating shaft 13 on trammel beam pivoted arm 12 is provided with protruding axle, and the protruding axle axle center of two pivoted arms 12 equates that to the distance between rotating shaft 13 axle center protruding axle places in the chute 11 slidably.
As shown in Figure 3, as different from Example 1, foot-operated arm 4 is from extending certain distance again with the position of sprocket wheel arm 2 pivot joints, and an end of the urceolus 5 of telescoping mechanism is installed in an end of close sprocket wheel 1 on the sprocket wheel arm 2, and an end of inner core 6 is installed on the end of the elongated end of riding arm 4.
The utility model is not limited to the foregoing description, all is protection domain of the present utility model so long as come realization speed and stressed change by retractor device and the foot-operated radius of elasticity reset device change.The extension spring of elasticity reset device can connect between the urceolus and foot-operated arm of retractor device again.For the elasticity reset device of torsion spring structure, the mechanism of manual regulation spring force size can be the adjustable screw that is fixed on foot-operated arm or the sprocket wheel arm, and adjustable screw is facing to an end of torsion spring.
Claims (7)
1, a kind of transmission system of variable speed bicycle, described transmission system is installed on the sprocket wheel, it is characterized in that described transmission system comprises that an end is fixed on the sprocket wheel arm on the sprocket wheel and is installed in rotation on the foot-operated arm on the sprocket wheel arm other end and is connected telescoping mechanism and elasticity reset device between foot-operated arm and the sprocket wheel arm.
2, the transmission system of a kind of variable speed bicycle as claimed in claim 1, it is characterized in that described telescoping mechanism comprises the hydraulic connecting rod that is connected between foot-operated arm and the sprocket wheel arm, described elasticity reset device comprises the extension spring that is connected between sprocket wheel arm and the foot-operated arm, and hydraulic connecting rod comprises the urceolus that stores hydraulic oil and the inner core that can relative urceolus slides.
3, the transmission system of a kind of variable speed bicycle as claimed in claim 1, it is characterized in that described telescoping mechanism comprises the hydraulic connecting rod that is connected between foot-operated arm and the sprocket wheel arm, hydraulic connecting rod comprises the urceolus that stores hydraulic oil and the inner core that can relative urceolus slides, described elasticity reset device comprise on the urceolus tube arm that is connected hydraulic connecting rod with foot-operated arm on extension spring.
4, the transmission system of a kind of variable speed bicycle as claimed in claim 1, it is characterized in that described telescoping mechanism comprises the hydraulic connecting rod that is connected between foot-operated arm and the sprocket wheel arm, hydraulic connecting rod comprises the urceolus that stores hydraulic oil and the inner core that can relative urceolus slides, and described elasticity reset device comprises the torsion spring that is installed in foot-operated arm and sprocket wheel arm connection location.
5, as the transmission system of each described a kind of variable speed bicycle of claim 1 to 4, it is characterized in that on two foot-operated arms, also being provided with chute, described transmission system also comprises trammel beam, trammel beam comprises a rotating shaft and is located at the pivoted arm at rotating shaft two ends, pivoted arm places the both sides and the symmetrical configuration of rotating shaft, rotating shaft is articulated in the central through hole of sprocket shaft, end away from rotating shaft on the trammel beam pivoted arm is provided with protruding axle, the protruding axle axle center of two pivoted arms equates that to the distance between the pivoted arm axle center protruding axle places in the chute slidably.
6, the transmission system of a kind of variable speed bicycle as claimed in claim 5 is characterized in that also being provided with the mechanism of manual regulation spring force size on elasticity reset device.
7, the transmission system of a kind of variable speed bicycle as claimed in claim 6 is characterized in that sprocket wheel arm and foot-operated arm are articulated by rotatable bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620064168 CN200967532Y (en) | 2006-09-13 | 2006-09-13 | Speed-transformation device for multi-speed roadster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620064168 CN200967532Y (en) | 2006-09-13 | 2006-09-13 | Speed-transformation device for multi-speed roadster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200967532Y true CN200967532Y (en) | 2007-10-31 |
Family
ID=38967100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620064168 Expired - Fee Related CN200967532Y (en) | 2006-09-13 | 2006-09-13 | Speed-transformation device for multi-speed roadster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200967532Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2536995C1 (en) * | 2013-05-20 | 2014-12-27 | Сергей Леонидович Устьянцев | Bicycle pedal crank gear |
| CN104554592A (en) * | 2013-10-14 | 2015-04-29 | 朱培池 | Pedal unit without dead angles |
| CN108001606A (en) * | 2017-12-22 | 2018-05-08 | 东营市海天石油科技有限责任公司 | A kind of force-saving speed-varying bicycle |
-
2006
- 2006-09-13 CN CN 200620064168 patent/CN200967532Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2536995C1 (en) * | 2013-05-20 | 2014-12-27 | Сергей Леонидович Устьянцев | Bicycle pedal crank gear |
| CN104554592A (en) * | 2013-10-14 | 2015-04-29 | 朱培池 | Pedal unit without dead angles |
| CN108001606A (en) * | 2017-12-22 | 2018-05-08 | 东营市海天石油科技有限责任公司 | A kind of force-saving speed-varying bicycle |
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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: 20071031 Termination date: 20100913 |