CN206124618U - Card formula flower -drum suitable for outer speed -changing bicycle of left side drive - Google Patents

Abstract

The utility model provides a card formula flower -drum suitable for outer speed -changing bicycle of left side drive, personally experiences sth. Part of the body including assembly inside and outside flower -drum together, the bearing, and the rear axle, sprocket base and one way clutch, the sprocket base is located the left side of the outer flower -drum body, the one way clutch lock extremely turns to to the levogyration, and it turns to to dextrorotation to slide.

Description

Suitable for the clamp type flower-drum of the outer multi-speed bicycle of left driving

Technical field

This utility model is related to a kind of rear drum of bicycle, is especially adapted for use in the cassette of the outer multi-speed bicycle of left driving Flower-drum.

Background technology

Bicycle is individual's machinery articles for use that are a kind of common and extremely popularizing, and its recoverable amount and user are equal in the world It is hundreds of millions of.Also never it has been interrupted in more than 200 years to the improvement of bicycle itself since its birth.With sending out for society Exhibition, bicycle are constantly improved as acting on for sports apparatus, body-building apparatus and converter tools, and this is also bicycle performance Raising carries out ultimate attainmentization transformation there is provided power.1940, the speed change system that Kan Paniuluo (Tullio Campagnolo) is released Indicate the beginning in sports bicycle shift epoch.Compared with single speed bicycle, there is the multi-speed bicycle of manual derailleur, for The effect for improving riding speed is very notable.This is one and " sensing type " improvement can be clearly experienced by cyclist.It is this kind of It is rare to have improved since nearly half a century.There are some to improve, for example, bearing is manufactured with high-duty cast ceramic balls, " plate type wheel ", " break bar ", vehicle frame adopt streamlined tubing, with carbon fiber or titanium alloy manufacture vehicle frame etc., this kind of improvement, they Riding resistance to reducing bicycle, improve riding speed effect can be described as it is very little, mostly can only be by fine survey Examination is proved that such improvement can be referred to as " test improvement ".Although such improvement effect is not it is obvious that but bicycle neck The science research input that domain is paid for this is huge, and economic cost is high.If bicycle is only used as the use of the personal daily vehicles, These " test improvement " can give it up.But, as strongly pursue improve riding speed cyclist and Cycling enthusiasts, still go after like a flock of ducks to this kind of improvement.For this colony, if bicycle improve can by oneself Riding speed improves 0.1s/km, is all extremely big Gospel.Because in high-level bicycle rider tournament, the difference of 0.1 second can be with It is champion and the gap of the 10th！Beijing Olympic Games man's highway (245.4 kilometers) bicycle finals in such as 08 year the 1st to 6 Achievement 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 determining.

In prior art, the driving means in bicycle be all be substantially disposed in right side, only BMX bicycles (single speed) and The bicycle ridden for double and many people jointly has left driving device to occur.There is artificial sinistration foot people to design left drive single speed voluntarily Car, but have no that such commodity emerge.Driving is arranged at left side by part street formula BMX bicycle, while in the right outside peace of bicycle Dress steps on cylinder, gets used to being used with the preceding bicyclist of right lower limb for doing acrobatic elements, its objective is to avoid big sprocket wheel from doing specific It is damaged during stunt.While left driving device is set for the bicycle that double and many people ride jointly, right drive is also provided with Device, it is therefore an objective to coordinate multiple driving means.If speed change gear, its speed change gear is still on right side.Driving in bicycle Device is arranged on right side, and from 1888, John .k. Si Tali in Coventry, United Kingdom city produced first modern times certainly to this situation Drive a vehicle and there is, the time is more than a century.Its initial design considerations has had no way of investigating, but, people may Think, 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, if Count out single speed bicycle of the driving means in left side.From making full use of sharp foot advantage to improve the consideration of riding speed angle, this Viewpoint is a kind of misunderstanding, the driving means of bicycle be arranged on people's lower limb foot advantage side vehicle frame for give full play to advantage side ability with It is unfavorable to improve speed.

For the problems referred to above, and change common people for the essence technology prejudice that bicycle structure is designed, there is provided It is a kind of more reasonable in strength transmission, the suitable right-handedness foot for accounting for the most right-handedness foot person's physiological dominance of population can be given full play to The outer multi-speed bicycle of left driving that crowd uses, the big sprocket wheel of more than the two grades multi-change speeds that will be arranged on axis are arranged on The left side of vehicle frame, left crank are solidified as a whole with the big sprocket wheel；Correspondingly, the step by-step variable gear on rear drum is (multistage Flywheel) back left interior of vehicle frame is arranged on, cassette multistage flying wheel is then installed on clamp type flower-drum (containing rear axle)；Accordingly, it is described On 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, there is provided the clamp type flower-drum suitable for assembling the outer multi-speed bicycle of left driving, makes The outer multi-speed bicycle production of left drive is possibly realized.

Clamp type flower-drum is prior art, has different styles, but population structure is essentially identical.Typical structure includes inside and outside flower Drum body, bearing, rear axle, sprocket wheel pedestal and one-way clutch etc..Existing clamp type flower-drum is matched somebody with somebody for the outer multi-speed bicycle of right drive What set was used, sprocket wheel pedestal is arranged on the right side of outer flower-drum body, and locked turn of the one-way clutch being arranged on the left of sprocket wheel pedestal Turn to for dextrorotation, sliding as left-handed；Female thread corresponding with cassette multistage flying wheel locking chain wheel cover on the right side of sprocket wheel pedestal Also it is dextrorotation.In order to adapt to the outer multi-speed bicycle of left drive, clamp type flower-drum must have respective change.

Utility model content

A kind of clamp type flower-drum suitable for the outer multi-speed bicycle of left driving, including the inside and outside flower-drum body being assembled together, axle Hold, rear axle, sprocket wheel pedestal and one-way clutch, the sprocket wheel pedestal is located at the left side of the outer flower-drum body, the one-way clutch The locked steering of device is left-handed, slides and turns to as dextrorotation.

The one-way clutch couples position positioned at the sprocket wheel pedestal right part with the sprocket wheel pedestal.

The outer flower-drum body couples position positioned at the outer flower-drum body left part with the one-way clutch.

The female thread of the locking sprocket wheel locking lid of the connection cassette multistage flying wheel on the left of the sprocket wheel pedestal is left-handed.

What this utility model was specific to is that cyclist and cycling enthusiasts are such a in cycling crowd It is keen to carry out bicycle ultimate attainmentization transformation, pursues the colony for improving riding speed, is that foundation accounts for the most right-handedness of population The physiological characteristicies of sufficient crowd are input into bicycle power, the improvement that export structure is arranged.

This utility model is found based on following two：

One：Many cycling researcheres are had been found that when test cyclist steps on and pedals power：Left side legpower is more than right side.For How about this is but without accurately explanation.Such as：Luo Jiong's " development of cycle test car and steps on opening for juggling with the feet art diagnostic analysiss systems soft ware Send out " (Beijing Sport University 2005,05,18)；Wu Cuie, Yuan Peng, military Gui Xin etc. " difference is stepped on and pedals cyclist under frequency Step on and pedal power research " (sports and science 2007,1, (28))；" lower limb muscular work and the foot when different drive ratios are ridden of Zhang Yihang The research of bottom pressure feature " (Beijing Sport University 2008,05,26)；Cao Chengzhu " track rider special project is stepped on and pedals power The analysis and research of amount " (Chinese New Products .2009,14).The test result announced in its text is all that left side legpower is more than Right side, but clear and definite answer is not all given the reason for producing this phenomenon.

It is of the present utility model it is found by the applicant that:Now on the left of the current structures shape of bicycle bicycle under to step on resistance big In right side, reason has two (by taking existing right driving bicycles as an example)：

1) present right driving bicycle driven, i.e. big sprocket wheel are may be contained within the right side of bicycle with minor sprocket, and are connected by chain Connect.Big sprocket wheel, bilateral crank and bilateral are foot-operated to constitute bicycle quick shaft type power loader.Generally big sprocket wheel with right crank is It is combined together, the lateral separation very little of both the stress points when being stepped on the stress point of right crank end and big sprocket wheel, We are defined as the driving structure on right side：One group of simple lever claims direct lever；The crank in left side is by axis and big chain Wheel is indirectly joined together, and the lateral separation of both the stress points when being stepped in the stress point of left crank end and big sprocket wheel is The manyfold on right side, and axis is installed in bicycle center tap and supported by two groups of bearings.In order to keep the flexible of rotation Property, it is necessary to certain gap is preserved in plane of rotation.We are defined as the driving structure (containing axis, big sprocket wheel) in left side：One group Double lever or indirect lever.The legpower that right crank is subject to, when being delivered in big sprocket wheel, its loss very little very little can be ignored Disregard.It is and the legpower that left crank is subject to is when being delivered in big sprocket wheel, much bigger on the right side of its loss ratio.

2), necessarily by the distortion power of axis in riding, this distortion power is at 3 for the center tap of bicycle：A) big chain Wheel, behind the substantially right side of distortion power a directions；B) left crank, distortion power b directions are substantially left front；C) right crank, distortion power c directions Substantially before the right side.Distortion power a ride step on pedal in all exist all the time；Distortion power b is produced when left crank is descending；Distortion power c exists Produce when right crank is descending.Distortion power a and distortion power b is mutual enhanced relation, and more legpowers can be lost；Distortion power a with Distortion power c is the relation cancelled out each other, and can reduce the loss of legpower.

In sum, its result steps on resistance more than right side under directly translating on the left of bicycle, is transported according to multidigit bicycle Test result that dynamic researcher is done calculates, on the left of bicycle under step on resistance more than right side 3% or so.So, it is straight in pedal position When connecing legpower under detection cyclist, even if the left and right sides of cyclist is stepped on, speed is completely the same, and left side legpower must also be greater than right side.

Two：It has long been known that the upper limb of people has single side superiority, most people is all that (upper limb advantage side is dextromanuality Right side)；Equally, the lower limb of people are 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 for knowing of point may be few, 1985 Plato (Plato) etc. to some white men of Maryland, USA for containing handedness, The asymmetric behavior characteristicss of the mankind such as sharp foot carried out investigation；Chinese scholar started to have carried out this some to grind in the nineties in 20th century Study carefully.Such as：Ai Qinglong, king's sweet-smelling grass, " measure of 150 profit foots and handedness " ([J] the Academic Journal of Kunming Medical College 1991,12 of Pu Daoxue (1))；" Oroqen, Ewenki, Daur nationality's laterality functional character research " ([J] of Lu Shunhua, Zheng Lianbin, Li Yonglan etc. Hereditary .2000.22 (5)).But do not find that profit foot situation of the someone to cyclist in stepping bicycle is stepped on is carried out in the world so far Cross the report of research.But, disclosed in prior art, have relevant information：Zheng Xiaohong, prolongs " current China's Track Cycling item of beacon The horizontal women's splendid dress of height of eye steps on the preliminary study of the state of pedaling " (Beijing Teachers College of Physical Education's journal 1997,6 (9))；Li Chen, Liu " China high level woman 500 meters of place timing project cyclist steps on and pedals state research " of English (learn by Shandong Physical Education Institute Report 2007,4 (23))；" research of lower limb muscular work and plantar pressure feature when different drive ratios are ridden " (Beijing of Zhang Yihang Sport university 2008,05,26)；

The test result announced in each piece article all show right good the stepping on for left difference of most of cyclists and pedal shape Condition.

Profit foot situation of the applicant of the present utility model to cyclist in stepping bicycle is stepped on has carried out the research of nearly 2 years. It is further characterized by by test, this right good left poor situation is not only present when right-handedness foot people rides right driving bicycle driven, in right-handedness foot People is still present when riding left driving bicycle driven.Tracing it to its cause is：What cyclist was made on bicycle steps on the feature of having an effect for pedaling action It is very unique, belongs to the complicated random movement of lower limb, advantage side lower limb can preferably completes it, be the body of limbs single side superiority It is existing, even if the resistance for being run into is still such when slightly larger.Applicants have discovered that：Right-handedness foot people scrunches bicycle (either left drive Or right drive) when, when right foot is stepped on, the round and smooth degree of crank half cycle motion, is better than the round and smooth degree of crank half cycle motion when stepping under left foot (round and smooth degree is to weigh to step on one of standard for pedaling level of movement height).Also show as simultaneously, the running speed of right half cycle will be slightly It is faster than the running speed of left half cycle.

In sum, the right drive structure that cyclists only now, for accounting for the most right-handedness foot cyclist of population, be The structure of individual mistake.It chooses a light load of comparison like allowing a people for being good at bearing a load on one's shoulder (right lower extremity)；And allow another The individual people's (left lower extremity) for being bad to bear a load on one's shoulder chooses a heavier load.And require them under conditions of synchronous moving ahead, Hurry up as far as possible.Necessarily the kind person of carrying a load is lighter for its result, but in order to synchronous moving ahead can not play his all one's effort, and be not good at The person of carrying a load then has to run around all the time wears him out for synchronous moving ahead to full capacity.The pace of the two can only be limited to be not good at the poor of the person of carrying a load Ability.Often to be challenged in the sports tournament of athlete's physiological limit in this kind of Jing of bicycle rider tournament, be to tolerate above-mentioned What situation was present, unless it is undiscovered！

Suitable right-handedness foot crowd using left drive multi-speed bicycle will step on and pedal the larger crank of resistance and be arranged at right side, make the right side The cyclist of sharp foot can more fully play the ability of its right lower extremity advantage side, and drive its left lower extremity ability more effectively Play.Dextropedal cyclist ride left driving bicycle driven when, under the constant situation of left foot power output, its right sufficient power is defeated Output should higher than left foot 3% or so.The increase of this integral power output, can be with equivalent to by bicycle loss of weight 25-50% The riding speed of bicyclist is improved into 1% or so, high-caliber cycling people can experience.This be one between Improvement between " sensing type improvement " and " test improvement ".For bicycle its benefit of racing is self-evident.And this reality It is the vitals of the outer multi-speed bicycle of the left drive of assembling with the outer multi-speed bicycle clamp type flower-drum of the left drive of new offer.

Although transforming existing multi-speed bicycle as left drive from right drive, it is that one's own profession technical staff in the industry can complete Design objective, but never someone does.Bicycle is a typical assembling commodity, even car load factory is nor all zero What part can be produced.Each parts be by special manufacturer production out.Cooperation without each producer, produces left drive speed change certainly Driving cost can be very high.Nobody has found the right drive structure that cyclists only now, is cycled to accounting for the most right-handedness of population enough For people, it is a structure for mistake；Nobody recognizes that left drive multi-speed bicycle is this by bicycle driving device installation site Be changed into left from the right side, for those strongly pursue the sufficient crowd of right-handedness for improving oneself riding speed, be extremely beneficial one voluntarily Bassinet structure element relationship changes (invention of key element change).This is that nobody goes design over more than 70 years, produces left drive speed change voluntarily The reason for car.So more no one individually goes design, the outer multi-speed bicycle clamp type flower-drum of left drive is produced.

This utility model is described in further details below by drawings and Examples.

Description of the drawings

Fig. 1 is the structural representation for being adapted to the outer multi-speed bicycle of left drive that right-handedness foot crowd uses.

The structural representation of a clamp type flower-drum that Fig. 2 is provided for this utility model.

Specific embodiment

Selected embodiment of the present utility model is illustrated now with reference to accompanying drawing.

Clamp-type bicycle flower-drum is it is well known that this utility model art in this utility model art Technical staff just can be with correct understanding this utility model by the accompanying drawing of this utility model description.Therefore, only will tie herein Close accompanying drawing to be described briefly.Use in this utility model " it is front, after, it is left, it is right, on, under " isotropy word each mean installation this Those directions of the bicycle of utility model.

The outer multi-speed bicycle of left drive that suitable right-handedness foot crowd uses is as shown in figure 1, including a vehicle frame 1, arrange on vehicle frame Variable-speed controller 2, arranges axis 3, multistage big sprocket wheel 4 is arranged on axis 3 on the vehicle frame, the big sprocket wheel 4 is placed in a left side for vehicle frame 1 Side, the left side of big sprocket wheel 4 arrange crank 5, and the crank 5 is solidified as a whole with big sprocket wheel 4, arrange another crank in the right-hand member of axis 3 6, pedal 7 is respectively provided with crank 5 and crank 6.The clamp type flower-drum 8 that setting this utility model is provided on vehicle frame is (after containing Axle), support rear wheel 13.On clamp type flower-drum 8 arrange multistage flying wheel 9, flywheel 9 be arranged on the left rear inside of vehicle frame 1 with it is big Correspondence before and after sprocket wheel 4.Chain 10 is arranged in big sprocket wheel 4 and flywheel 9.On the outside of the left side rear end of vehicle frame 1, rear chiain-moving device is set 11, the middle lower portion on vehicle frame 1 is also associated with front chain mover 12.

As shown in Fig. 28 structural representation of a clamp type flower-drum provided for this utility model, 801 is flower in clamp type flower-drum Drum body, 802 is the outer flower-drum body of clamp type flower-drum, and 803 is bearing, and 804 is rear axle, and 805 is sprocket wheel pedestal, and 806 is one-way clutch, 807 is that cassette multistage flying wheel locks chain wheel cover.As shown in Figure 2, sprocket wheel pedestal 805 is located at the left side of outer flower-drum body 802, cassette Outside flower-drum, flower-drum body 802 is rotatably coupled by one-way clutch 806 with sprocket wheel pedestal 805.Sprocket wheel pedestal 805 with unidirectionally from The connection position of clutch 806 is located at 805 right part of sprocket wheel pedestal, and outer flower-drum body 802 is located at the position that couples of one-way clutch 806 Outer 802 left part of flower-drum body.It is left-handed to turn to as one-way clutch 806 is locked, and steering of sliding is dextrorotation, when sprocket wheel pedestal 805 When the multistage flying wheel 9 of installation is not rotated, the rear wheel 13 on flower-drum body 802 outside clamp type flower-drum still can be rotated forward (referring to Fig. 1).

The screw thread of cassette multistage flying wheel locking chain wheel cover 807 is left-handed, when it is locked with 805 left side female thread of sprocket wheel pedestal It is fixed, it is possible to which that cassette multistage flying wheel 9 is fixed on sprocket wheel pedestal 805.Left hand thread can avoid cassette multistage flying wheel from locking Chain wheel cover 807 is loosened when rear wheel 13 is rotated forward.

Although only have selected selected embodiment to be illustrated this utility model, by reading in the disclosure Hold, this utility model those skilled in the art can very clearly, this practicality defined in without departing substantially from appended claims In the case of new scope, the clamp type flower-drum of existing numerous styles can be modified as multi-speed bicycle outer suitable for left drive Clamp type flower-drum.The above description of this utility model embodiment is only supplied to illustrate, not for by appended claims And its this utility model that equivalents are limited is limited.

Claims (5)

1. a kind of clamp type flower-drum suitable on the outer multi-speed bicycle of left driving, including the inside and outside flower-drum body being assembled together, axle Hold, rear axle, sprocket wheel pedestal and one-way clutch, it is characterised in that the sprocket wheel pedestal is located at the left side of the outer flower-drum body, institute The locked steering for stating one-way clutch is left-handed, slides and turns to as dextrorotation.

2. the clamp type flower-drum suitable on the outer multi-speed bicycle of left driving according to claim 1, it is characterised in that described One-way clutch couples position positioned at the sprocket wheel pedestal right part with the sprocket wheel pedestal.

3. the clamp type flower-drum suitable on the outer multi-speed bicycle of left driving according to claim 1 and 2, it is characterised in that The outer flower-drum body couples position positioned at the outer flower-drum body left part with the one-way clutch.

4. the clamp type flower-drum suitable on the outer multi-speed bicycle of left driving according to claim 1 and 2, it is characterised in that The female thread of the locking sprocket wheel locking lid of the connection cassette multistage flying wheel on the left of the sprocket wheel pedestal is left-handed.

5. the clamp type flower-drum suitable on the outer multi-speed bicycle of left driving according to claim 3, it is characterised in that described The female thread of the locking sprocket wheel locking lid on the left of sprocket wheel pedestal is left-handed.