CN205574211U - Preceding group of chain ware suitable for outer speed -changing bicycle of left side drive - Google Patents

Abstract

The utility model provides a preceding group of chain ware suitable for outer speed -changing bicycle of left side drive, including the base component, including the three fabric pieces of portable component and chain guide member of linkage, its characterized in that, portable component with the connection point of base component is located portable component right part, portable component with chain guide member 's connection point is located portable component left part. The utility model discloses a be fit for installing preceding group of chain ware on the speed -changing bicycle outside the drive of a left side, the messenger adopts a left side preceding, back outer derailleur design to drive outer speed -changing bicycle and produces the enable.

Description

It is applicable to the front chain mover of the outer multi-speed bicycle of left driving

Technical field

This utility model relates to the front chain mover of a kind of bicycle, is provided in particular in a kind of front chain mover being applicable to the outer multi-speed bicycle of left driving.

Background technology

Bicycle is a kind of the most universal common individual's machinery articles for use, and its recoverable amount and user are all hundreds of millions of in the world.Improving of bicycle itself has the most never been interrupted in more than 200 year since it is born.Along with the development of society, bicycle acts on constantly raising as sports apparatus, body-building apparatus and converter tools, this also raising for bicycle performance carry out ultimate attainmentization transformation and provide power.1940, the speed change system that Kan Paniuluo (Tullio Campagnolo) releases indicated the beginning in sports bicycle shift epoch.Compared with single speed bicycle, there is the multi-speed bicycle of manual derailleur, the most notable for improving the effect of riding speed.This is one can clearly be experienced " sensing type " improvement by cyclist.This kind of improvement has been rare since nearly half a century.Also have some to improve, such as manufacture bearing with high-duty cast ceramic balls, " plate type wheel ", " break bar ", vehicle frame uses streamlined tubing, manufactures vehicle frame etc., this kind of improvement with carbon fiber or titanium alloy, they riding resistances to reducing bicycle, the effect improving riding speed can be described as very little, mostly can only be proved by DCO detailed checkout, and this type of improvement can be referred to as " test improvement ".Although this type of improvement effect not it is obvious that but the science research input paid for this of bicycle art is huge, economic cost is high.If bicycle being only used as the personal daily vehicles use, these " test improvement " can give it up.But, as doing one's utmost to pursue cyclist and the cycling enthusiast of raising riding speed, this kind of improvement is still gone after like a flock of ducks.For this colony, if the riding speed of oneself can be improved 0.1s/km by improving of bicycle, it is all huge Gospel.Because in high level bicycle rider tournament, the difference of 0.1 second can be the gap of champion and the 10th！The 1st to 6 achievement of Beijing Olympic Games man's highway (245.4 kilometers) bicycle finals in such as 08 year be 6 hours 23 points 49 seconds, its ranking can only rely on the slightest difference in the high-speed photography picture of terminal line end to determine.

In prior art, the driving means in bicycle is all to be substantially disposed in right side, and only BMX bicycle (single speed) and the bicycle jointly ridden for double and many people have left driving device to occur.There is artificial sinistration foot people to design a left side and drive single speed bicycle, but have no that these type of commodity emerge.Driving is arranged at left side by part street formula BMX bicycle, installs in the right outside of bicycle simultaneously and steps on cylinder, gets used to using with the preceding bicyclist of right lower limb for doing acrobatic elements, its objective is to avoid big sprocket wheel damaged when doing specific stunt.While the bicycle supplying double and many people jointly to ride arranges left driving device, it is also provided with right driving device, it is therefore an objective to coordinate multiple driving means.If there being speed change gear, its speed change gear is still on right side.Driving means in bicycle is arranged on right side, and this situation was from 1888, and John .k. Si Tali in Coventry, United Kingdom city produces first modern bicycle and rises and exist for, and the time is more than a century.Its initial design considerations has had no way of investigating, but, one might believe that, driving means should be arranged on rides on the vehicle frame of people's lower limb foot advantage side.Therefore, have also appeared for sinistration foot crowd, design the driving means single speed bicycle in left side.Considering to improve riding speed angle from making full use of profit foot advantage, this viewpoint is that one is misread, and it is disadvantageous that the driving means of bicycle is arranged on people's lower limb foot advantage side vehicle frame for giving full play to advantage side ability to improve speed.

For the problems referred to above, also it is to change the essence technology prejudice that common people design for bicycle structure, there is provided a kind of more reasonable in strength transmission, can give full play to account for the outer multi-speed bicycle of left driving that the applicable right-handedness foot crowd of the most right-handedness foot person's physiological dominance of population uses, the big sprocket wheel that will be arranged on more than on axis two grades multi-change speeds is arranged on the left side of vehicle frame, and left crank is solidified as a whole with this big sprocket wheel；Correspondingly, the step by-step variable gear (multi-chain gear wheel) being arranged on rear axle is arranged on the back left interior of vehicle frame；Accordingly, on described axis and rear axle, the derailleur of speed change gear is arranged on the left side of vehicle frame.

The purpose of this utility model is that, it is provided that a kind of front chain mover being applicable to the outer multi-speed bicycle of left driving.

Front chain mover is prior art, and style is numerous, and population structure is essentially identical.Typical structure includes base component, movable member containing connection rod set and chain guide member, base component is fixed on vehicle frame, movable member connects on the base member, chain guide member is connected on movable member, movably it is connected between movable member with base component and chain guide member, chain guide member controls chain, is additionally provided with speed-change control device and is connected with movable member, and movable member action drives chain guide member to be changed between multiple big sprocket wheels by chain.

Driving outer multi-speed bicycle to adapt to a left side, front chain mover also has respective change.

Utility model content

It is applicable to the front chain mover of the outer multi-speed bicycle of left driving, including base component, movable member containing connection rod set and three groups of components of chain guide member, this movable member is attached to base component, this chain guide member is attached to movable member, this chain guide member controls chain, optionally to make chain change between multiple sprocket wheels of big sprocket wheel when movable member moves relative to base component.It is characterized in that, described movable member is positioned at movable member right part with the interface of described base component；Described movable member is positioned at movable member left part with the interface of described chain guide member.

Movable member and chain guide member are right left connecting relation.

Closer, described movable member may be located at movable member bottom with the interface of described chain guide member, and described movable member and described chain guide member are upper right lower-left connecting relation.

Described base component is positioned at front chain mover right-hand member, and described chain guide member is positioned at front chain mover left end.Described movable member is positioned at front chain mover right-hand member, and described chain guide member is positioned at front chain mover left end.

A left side is driven the described multistage big sprocket wheel being applicable on the left of axis in outer multi-speed bicycle and is dialled the front chain mover of chain, is installed on the left of cycle frame middle and lower part the most corresponding with described multistage big sprocket wheel.

Present disclosure is specifically directed to is that in cycling crowd, cyclist and cycling enthusiast such a hanker after carrying out bicycle ultimate attainmentization transformation, pursue the colony improving riding speed, is based on the improvement that bicycle power input, export structure are arranged by the physiological characteristics accounting for population most right-handedness foot crowd.

The present invention is based on following two discoveries:

One: it has long been known that the upper limb of people has single side superiority, most people is all dextromanuality (upper limb advantage side is right side)；Equally, the lower limb of people also have single side superiority, and the advantage side of most people lower limb is right side, also known as right-handedness foot.But this people of knowing of point may be few, 1985 Plato (Plato) etc. some white men of Maryland, USA have been carried out containing handedness, the asymmetric behavior characteristics of the mankind such as profit foot carried out investigation；Chinese scholar started this has carried out some researchs in the nineties in 20th century.As: Ai Qinglong, king's sweet-smelling grass, " 150 example profit foot and the mensuration of handedness " ([J] the Academic Journal of Kunming Medical College 1991,12 (1)) of Pu Daoxue；" Oroqen, Ewenki, Daur nationality's laterality functional character research " ([J] heredity .2000.22 (5)) of Lu Shunhua, Zheng Lianbin, Li Yonglan etc..But the most do not find to have in the world people that cyclist's profit foot situation in stepping on stepping bicycle was carried out the report of research.But, have relevant information: Zheng Xiaohong disclosed in prior art, prolong the preliminary study of the state of pedaling " current China Track Cycling programme high level women's splendid dress step on " (Beijing Teachers College of Physical Education's journal 1997,6 (9)) of beacon；" 500 meters of China high level woman place timing project cyclist steps on and pedals state research " (Shandong Physical Education Institute's journal 2007,4 (23)) of Li Chen, Liu Ying；" lower limb muscular work and the research of plantar pressure feature when different drive ratios is ridden " (Beijing Sport University 2008,05,26) of Zhang Yihang；

What the test result announced in each piece article all show the good left difference in most of cyclist right side steps on the situation of pedaling.

Applicant has carried out the research of nearly 2 years to cyclist's profit foot situation in stepping on stepping bicycle.Being further characterized by by test, the good left poor situation in this right side not only exists when right-handedness foot people rides right driving bicycle driven, still exists when right-handedness foot people rides left driving bicycle driven.Trace it to its cause and be: what cyclist was made on bicycle step on, and to pedal the feature of having an effect of action be unique, belong to the complicated random movement of lower limb, advantage side lower limb can preferably complete it, is the embodiment of limbs single side superiority, though the most such when the resistance run into is slightly larger.Applicants have discovered that: when right-handedness foot people scrunches bicycle, the round and smooth degree of crank half cycle motion when right foot is stepped on, be better than the round and smooth degree (round and smooth degree is to weigh to step on one of standard pedaling level of movement height) of crank half cycle motion when left foot is stepped on.Also showing as, the running speed outline of right half cycle is slightly faster than the running speed of left half cycle simultaneously.

Two: many cycling researcheres have been found that when testing cyclist and stepping on and pedal power: left side legpower is more than right side.The most but without explaining accurately." cycle test car development and step on the exploitation of juggling with the feet art diagnostic analysis systems soft ware " (Beijing Sport University 2005,05,18) such as: Luo Jiong；Wu Cuie, Yuan Peng, military Gui Xin etc. " difference step on pedal cyclist under frequency step on pedal power research " (sports and science 2007,1, (28))；" lower limb muscular work and the research of plantar pressure feature when different drive ratios is ridden " (Beijing Sport University 2008,05,26) of Zhang Yihang；" track rider special project steps on the analysis and research pedaling strength " (the China New Products .2009,14) of Cao Chengzhu.The test result announced in its literary composition is all that left side legpower is more than right side, but the reason producing this phenomenon is not the most given clear and definite answer.

Inventors herein have recognized that, bicycle driving device is arranged at right side, and for being irrational from the point of view of accounting for population most of right-handedness foot crowd, to giving full play to, the effect of its advantage side is unfavorable.Because stepping on resistance more than right side under now on the left of the current structures shape of bicycle bicycle.Reason has two (as a example by existing right driving bicycles):

1) present right driving bicycle driven, the biggest sprocket wheel and minor sprocket be may be contained within the right side of bicycle, and be connected by chain.Big sprocket wheel, bilateral crank and bilateral are foot-operated constitutes bicycle quick shaft type power loader.Generally big sprocket wheel and right crank are bound together, and when being stepped, the stress point of right crank end is the least with the lateral separation of both the stress points on big sprocket wheel, and we are defined as the driving structure on right side: one group of simple lever or claim direct lever；The crank in left side is to be indirectly joined together with big sprocket wheel by axis, when being stepped, the lateral separation of both the stress points on the stress point of left crank end and big sprocket wheel is the manyfold on right side, and axis be installed on bicycle center tap in supported by two groups of bearings.In order to keep the motility rotated, it is necessary to preserve certain gap at plane of rotation.We are defined as the driving structure (containing axis, big sprocket wheel) in left side: one group of double lever or indirect lever.The legpower that right crank is subject to, when being delivered on big sprocket wheel, its loss is the least the least, is negligible.And the legpower that left crank is subject to is when being delivered on big sprocket wheel, much bigger on the right side of its loss ratio.

2) center tap of bicycle is necessarily by the distortion power of axis in riding, and this distortion power is from 3: a) big sprocket wheel, behind the substantially right side, distortion power a direction；B) left crank, distortion power b direction is the most left front；C) right crank, before the substantially right side, distortion power c direction.Distortion power a ride step on pedal in the most all exist；Distortion power b produces when left crank is descending；Distortion power c produces when right crank is descending.Distortion power a and distortion power b is the relation mutually strengthened, and more legpower can be lost；Distortion power a and distortion power c is the relation cancelled out each other, and can reduce the loss of legpower.

In sum, its result directly translates into steps on resistance more than right side under on the left of bicycle, calculate according to the test result that multidigit cycling researcher is done, on the left of bicycle under step on resistance more than right side about 3%.So, under pedal position directly detects cyclist during legpower, even if the left and right sides of cyclist is stepped on fast completely the same, left side legpower also must be greater than right side.

Therefore, structure is driven on the right side that cyclists only now, from the point of view of accounting for population most right-handedness foot cyclist, is a structure for mistake.It chooses a light load of comparison like allowing a people being good at bearing a load on one's shoulder (right lower extremity)；And allow another people being bad to bear a load on one's shoulder (left lower extremity) choose a heavier load.And require that they, under conditions of synchronizing to move ahead, hurry up as far as possible.The necessarily kind person of carrying a load is relatively lighter for its result, but can not play his all one's effort to synchronize to move ahead, and is not good at the person of carrying a load and then has to run around all the time wears him out to full capacity to synchronize to move ahead.The pace of the two can only be limited to be not good at the poor ability of the person of carrying a load.In the sports tournament of this kind of athlete's physiological limit to be challenged of bicycle rider tournament, will not tolerate that above-mentioned condition exists, unless it is undiscovered！

Be suitable for right-handedness foot crowd use a left side drive multi-speed bicycle by step on pedal the bigger crank of resistance be arranged at right side, enable dextropedal cyclist to play the ability of its right lower extremity advantage side more fully, and drive the more effectively performance of its left lower extremity ability.Dextropedal cyclist ride left driving bicycle driven time, under the situation that left sufficient power output is constant, its right sufficient power output should be higher than left foot by about 3%.The increase of this integral power output is equivalent to, by bicycle loss of weight 25-50%, the riding speed of bicyclist to be improved about 1%, and high-caliber cycling people can experience.This is an improvement between " sensing type improvement " and " test improvement ".It is self-evident for bicycle its benefit of racing.And to drive outer multi-speed bicycle front chain mover be one of left side vitals of driving outer multi-speed bicycle on the left side that the present invention provides.

Although existing multi-speed bicycle being driven from the right side and transforming a left side as and drive, it is the design objective that can complete of the technical staff in the industry, but never someone does.Bicycle is typical assembling commodity, can produce even car load factory is not all parts.Each parts are by special manufacturer production out.Not having the cooperation of each producer, multi-speed bicycle cost is driven on a production left side can be the highest.Nobody finds that structure is driven on the right side that cyclists only now, from the point of view of accounting for population most right-handedness foot cyclist, is a structure for mistake；Nobody recognizes that a left side drives that multi-speed bicycle is this becomes left by bicycle driving device installation site from the right side, the right-handedness foot crowd doing one's utmost to pursue oneself riding speed of raising for those, is that a most useful bicycle structure element relationship changes (invention of key element change).This is that over more than 70 year, nobody goes design, produces a left side and drives the reason of multi-speed bicycle.So more no one individually goes design, produce a left side and drive outer multi-speed bicycle front chain mover.

Below by drawings and Examples, the present invention is described in further details.

Accompanying drawing explanation

Fig. 1 is suitable for the left side that right-handedness foot crowd uses and drives the structural representation of outer multi-speed bicycle.

The master of a front chain mover that Fig. 2 and Fig. 2 a provides for this utility model regards and side-looking structural representation.

The schematic perspective view of a flat push type front chain mover that Fig. 3 provides for this utility model.

The schematic perspective view of a down-push type front chain mover that Fig. 4 provides for this utility model.

Detailed description of the invention

Now with reference to accompanying drawing, selected embodiment of the present utility model is illustrated.

Bicycle front derailleur is it is well known that this utility model those skilled in the art just can be with correct understanding this utility model by the accompanying drawing of this utility model description in this utility model art.Therefore, will only combine accompanying drawing herein to be described briefly.This utility model is used " front, after, left, right, on, under " isotropy word each means those directions installing bicycle of the present utility model.

Outer multi-speed bicycle is driven as shown in Figure 1 in the left side being suitable for right-handedness foot crowd use, including a vehicle frame 1, variable-speed controller 2 is set on vehicle frame, arranging axis 3 on this vehicle frame, axis 3 arranges multistage big sprocket wheel 4, this big sprocket wheel 4 is placed in the left side of vehicle frame 1, the left side of big sprocket wheel 4 arranges crank 5, this crank 5 is solidified as a whole with big sprocket wheel 4, and the right-hand member at axis 3 arranges another crank 6, is respectively provided with pedal 7 on crank 5 and crank 6.Vehicle frame arranges rear axle 8, supports rear wheel.Arranging flywheel 9 on rear axle 8, flywheel 9 is corresponding with before and after multistage big sprocket wheel 4 in being arranged on the left rear side of vehicle frame 1.Sheathed chain 10 on big sprocket wheel 4 and flywheel 9.Under the left side of vehicle frame 1, rear end arranges rear chiain-moving device connection end connection rear chiain-moving device 11, and the middle lower portion on vehicle frame 1 connects the front chain mover 12 that promising this utility model provides, and its body position is above multistage big sprocket wheel 4 side.

Fig. 2 and Fig. 2 a show this utility model provide an a left side drive multi-speed bicycle front chain mover 12 master regard and side-looking structural representation.Front chain mover 12 includes base component 121, movable member 122 and chain guide member 123, this base component 121 is arranged on vehicle frame 1, this movable member 122 is attached to base component 121, this chain guide member 123 is attached to movable member 122, this chain guide member 123 controls chain 10 (seeing Fig. 1), optionally to make chain 10 change (seeing Fig. 1) between the multiple big sprocket wheel of multistage big sprocket wheel 4 when movable member 122 moves relative to base component 121.

In front chain mover 12, described base component 121 couples for after right front left with movable member 122, and movable member 122 is positioned at movable member right part with the interface of base component 121；Movable member 122 couples for upper right lower-left with chain guide 123, and movable member 122 is positioned at movable member left part with the interface of chain guide 123.Described base component 121 is positioned at front chain mover 12 rightmost side, and chain guide 123 is positioned at front chain mover 12 leftmost side.

The schematic perspective view of multi-speed bicycle flat push type front chain mover 12 is driven on a left side that Fig. 3 show this utility model and provides.In front chain mover 12, base component 121 couples for after right front left with movable member 122, and movable member 122 is positioned at movable member right part with the interface of base component 121；Movable member 122 connects for the right Left-wing Federation with chain guide 123, and movable member 122 is positioned at movable member left part with the interface of chain guide 123.Base component 121 is positioned at front chain mover 12 rightmost side, and chain guide 123 is positioned at front chain mover 12 leftmost side.

The schematic perspective view of multi-speed bicycle down-push type front chain mover 12 is driven on a left side that Fig. 4 show the present invention and provides.In front chain mover 12, base component 121 connects for the right Left-wing Federation with movable member 122, and movable member 122 is positioned at movable member right part with the interface of base component 121；Movable member 122 couples for upper right lower-left with chain guide 123, and movable member 122 is positioned on the left of movable member and downside with the interface of chain guide 123.Base component 121 is positioned at front chain mover 12 rightmost side, and chain guide 123 is positioned at front chain mover 12 leftmost side.

Although only have selected selected embodiment the present invention is illustrated, but by reading present disclosure, those skilled in the art in the invention can be the clearest and the most definite, in the case of without departing substantially from the scope of the present invention defined in appended claims, the front chain mover of existing numerous styles can be modified as being applicable to a left side and drive the front chain mover of outer multi-speed bicycle.It is intended for illustrating to the above description of the embodiment of the present invention, limits not for the present invention limited by appended claims and equivalents thereof.

Claims (5)

1. it is applicable to the front chain mover of the outer multi-speed bicycle of left driving, including base component, movable member containing connection rod set and three groups of components of chain guide member, described movable member is attached to base component, described chain guide member is attached to this movable member, this chain guide member controls chain, optionally make chain change between multiple big sprocket wheels when movable member moves relative to base component, it is characterized in that, described movable member is positioned at movable member right part with the interface of described base component；Described movable member is positioned at movable member left part with the interface of described chain guide member.

The front chain mover being applicable to the outer multi-speed bicycle of left driving the most according to claim 1, it is characterised in that described movable member and described chain guide member are right left connecting relation；And/or described base component is to couple after right front left with movable member.

The front chain mover being applicable to the outer multi-speed bicycle of left driving the most according to claim 1 and 2, it is characterized in that, described movable member is positioned at movable member bottom with the interface of described chain guide member, and described movable member and described chain guide member are upper right lower-left connecting relation.

The front chain mover being applicable to the outer multi-speed bicycle of left driving the most according to claim 1 and 2, it is characterised in that described base component is positioned at the right-hand member of front chain mover, and described chain guide member is positioned at front chain mover left end.

The front chain mover being applicable to the outer multi-speed bicycle of left driving the most according to claim 3, it is characterised in that described movable member is positioned at front chain mover right-hand member, and described chain guide member is positioned at front chain mover left end.