CN209505980U - A kind of positive and negative firmly chain wheel for bicycle - Google Patents

Abstract

The utility model discloses a kind of positive and negative firmly chain wheels for bicycle.It includes chain wheel component, chain wheel component is located on bicycle middle shaft, axis is located on vehicle frame, chain wheel component is connected with the gear set being located on rear wheel wheel shaft by chain, chain is located in derailleur, derailleur is located on vehicle frame, chain wheel component includes central gear, positive powershift gear, fixed disc, tooth set, planetary gear and reversed powershift gear, forward direction is with setting flange connector on powershift gear, central gear is set on flange connector, central gear is meshed with planetary gear, planetary gear is laid on fixed disc, fixed disc is set on axis, planetary gear is meshed with tooth set setting, tooth is sheathed on positive exert oneself between chain wheel and chain wheel of reversely exerting oneself, it sets reversely on tooth set one side with powershift gear, central gear center is equipped with axis hole, and it is set on axis by axis hole, crank is set on the outside of central gear.It has the characteristics that structure is simple, easy to assembly and safe and reliable.

Description

A kind of positive and negative firmly chain wheel for bicycle

Technical field

The utility model relates to endless chain transmission for bicycle technical field more particularly to a kind of positive and negative firmly teeth for bicycle Disk.

Background technique

Bicycle, also known as bicycle or bicycle, the small-sized ground vehicles of usually two wheels.After people rides vehicle, trampled with foot Plate is power, is the environmentally protective vehicles.There are many bicycle type, have single bicycle, there are also more people for tandem bicycle Bicycle.The vehicles that can be used as environmental protection are used to ride instead of walk, go on a journey；Chain wheel is the part that bicycle middle shaft is connected with crank. The part being connected in bicycle with crank.People by scrunching drive crank, and then the rotation with movable chain wheel, eventually by Chain and flywheel drive rear wheel, provide power, complete the entire transmission chain of bicycle.Chain wheel gear the piece number: there is list Piece, 2,3 totally three kinds.Bicycle ellipse chain wheel dress is disclosed in Chinese utility model patent specification 203888985U It sets, belongs to technical field of bicycles.It solves the existing bicycle speed change ellipse chain wheel device in due course without one kind, and chain wheel It is not easy the problem of replacing.This bicycle ellipse chain wheel device includes the pawl disk on axis, oval chain wheel, crank and crank, pawl It being connect on the inside of the connection pawl of disk and chain wheel, oval chain wheel includes the oval fluted disc that multi-disc ruler diameter is sequentially reduced and is coaxially disposed, The inside of chain wheel is equipped with mounting hole for being correspondingly connected with pawl, mounting hole at least there are three, and its hole heart is equidistantly located at one On a circumference, crank and axis are threadedly coupled, and axis end is equipped with limiting block rank.The present apparatus is climbed suitable for mountainous region, and is adopted It with the structure of crank and oval chain wheel dismantling connection, can be exchanged in different occasions and round chain wheel, and connect axis with spline, torn open It changes simple and convenient.Currently, more and more people go on a tour bicycle as fitness equipment be used to ride exercise, bicycle；Voluntarily Vehicle itself is also a sports campaign, has road race, Mountain bike, Track cycling, stunt voluntarily Vehicle match etc.；But bicycle traditional at present reversely cannot firmly ride, i.e. reversed (counterclockwise) firmly scrunch of people is ridden Row, cannot provide power, and people's inverted walk can take exercises, and especially have good therapeutic effect to prolapse of lumbar intervertebral disc, because And study it is a kind of for bicycle it is positive and negative firmly chain wheel so that bicycle can with both forward and reverse directions firmly ride, can to ride from Driving is the same to advance forward, to achieve the purpose that take exercises, has positive meaning and vast market prospect.

Utility model content

For the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a kind of for bicycle just Anticaustic power chain wheel.It has the characteristics that structure is simple, easy to assembly and safe and reliable.

In order to solve the above technical problems, the utility model provides a kind of positive and negative firmly chain wheel for bicycle.It is wrapped Chain wheel component is included, chain wheel component is located on bicycle middle shaft, and axis is located on vehicle frame, chain wheel component and is located on rear wheel wheel shaft Gear set be connected by chain, chain is located in derailleur, and derailleur is located on vehicle frame, and chain wheel component includes centre tooth Wheel, positive powershift gear, fixed disc, tooth set, planetary gear and powershift gear is reversely used, it is positive convex with connection is set on powershift gear Edge, sets central gear on flange connector, and central gear is meshed setting with planetary gear, and planetary gear is several, planet tooth Wheel is laid on fixed disc, and fixed disc is set on axis, and planetary gear is meshed with tooth set setting, and tooth is sheathed on Forward direction is exerted oneself between chain wheel and chain wheel of reversely exerting oneself, and is set on tooth set one side reversely with powershift gear, central gear center is equipped with axis Hole, and be set on axis by axis hole fixation, crank is set on the outside of central gear.

The planetary gear is several, and preferably four, planetary gear is located at fixed disc preferably by fixing axle On.

The flange connector is several, preferably four, is uniformly located on positive powershift gear by rivet.

The derailleur chain can be arranged in positive powershift gear or reversely on powershift gear for stirring chain, And it is connected with the deflection machine being located on handlebar.

Compared with prior art, the beneficial effect that the utility model generates is: working as bicycle due to the above structure, Positive direction is (clockwise) firmly when riding, and chain is arranged on forward direction powershift gear, and people are by scrunching drive crank, crank band Dynamic central gear rotates clockwise, since central gear fixation is located on the flange connector of positive powershift gear, positive tooth of exerting oneself Wheel also rotates clockwise, and eventually by chain and flywheel, drives rear wheel, provides power, complete the entire transmission of bicycle Chain；When bicycle opposite direction is (counterclockwise) firmly rides, chain setting is reversely scrunching drive on powershift gear, people pass through Crank, crank handle turns central gear rotate counterclockwise, and since central gear is meshed setting with planetary gear, planetary gear phase is then It rotates clockwise, along with planetary gear is meshed with tooth set setting, to also be rotated clockwise with movable tooth set, because of tooth set one Fixed set reversely uses powershift gear on side, therefore is reversely also rotated clockwise with powershift gear, eventually by chain and flywheel, after driving Wheel rotation, provides power, completes the entire transmission chain of bicycle.So that bicycle can firmly be ridden with both forward and reverse directions, and ride Bicycle is the same to advance forward, to achieve the purpose that take exercises.

Detailed description of the invention

Fig. 1 is the assembly structure diagram of the utility model；

Fig. 2 is the enlarged structure schematic diagram of the utility model；

Fig. 3 is the positive enlarged structure schematic diagram of the utility model；

Fig. 4 is the dorsal surface enlarged structure schematic diagram of the utility model；

Fig. 5 is the central gear enlarged structure schematic diagram of the utility model；

In figure: 1 chain wheel component, 11 central gears, 12 positive powershift gears, 13 fixing axles, 14 fixed discs, 15 tooth sets, Powershift gear, 19 axis holes, 2 cranks, 3 gear sets, 4 rear wheels, 5 chains, 6 vehicle frames are reversely used in 16 flange connectors, 17 planetary gears, 18 With 7 derailleur.

Specific embodiment

Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.

Fig. 1 and Fig. 5 shows the utility model assembly structure diagram and each enlarged structure schematic diagram.As shown in Figure 1, this Utility model provides a kind of positive and negative firmly chain wheel for bicycle.A kind of positive and negative firmly chain wheel for bicycle.It is wrapped Chain wheel component 1 is included, chain wheel component 1 is located on bicycle middle shaft, and axis is located on vehicle frame 6, chain wheel component 1 and is located at rear wheel 4 Gear set 3 on wheel shaft is connected by chain 5, and chain 5 is located in derailleur 7, and derailleur 7 is located on vehicle frame 6, chain wheel component 1 includes central gear 11, positive powershift gear 12, fixed disc 14, tooth set 15, planetary gear 17 and reversed powershift gear 18, Forward direction sets central gear 11, central gear 11 and planetary gear 17 with flange connector 16 is set on powershift gear 12 on flange connector 16 Be meshed setting, and planetary gear 17 is laid on fixed disc 14, and fixed disc 14 is set on axis, and planetary gear 17 is equal Be meshed setting with tooth set 15, and tooth covers 15 and is set between positive firmly chain wheel 12 and chain wheel 18 of reversely exerting oneself, and tooth covers 15 one sides On set reversely with powershift gear 18,11 center of central gear is equipped with axis hole 19, and is set on axis by axis hole 19, central gear 11 outsides set crank 2.The planetary gear 17 be several, three or more, preferably four, planetary gear 17 preferably by Fixing axle 13 is located on fixed disc 14.The flange connector 16 is several, preferably four, is uniformly located at just by rivet To on powershift gear 12.The derailleur 7 chain 5 can be arranged for stirring chain 5 positive with powershift gear 12 or reversed With on powershift gear 18, and it is connected with the deflection machine being located on handlebar.Deflection machine (not regarding out in figure) can be as in the prior art Selector, deflection machine is preferably connected with bracing wire with derailleur 7, deflection machine be equipped with rotation angle line (- 30, -20,0 ,+ 20 ,+30 etc.) and knob.When the knob of deflection machine, which rotates angle, spends (- 30 degree to -20 degree) to -30 from -20 degree, pull simultaneously Derailleur 7 stirs chain 5 to reversely on powershift gear 18, people drive crank 2 by scrunching, and crank 2 drives central gear 11 It rotates counterclockwise, since central gear 11 is meshed setting with planetary gear 17,17 phase of planetary gear is then rotated clockwise, then plus Upper planetary gear 17 is meshed setting with tooth set 15, to also rotate clockwise with movable tooth set 15, because on tooth 15 one sides of set Fixed set reversely uses powershift gear 18, therefore is reversely also rotated clockwise with powershift gear 18, eventually by chain 5 and flywheel, after driving Wheel rotation, provides power, completes the entire transmission chain of bicycle；When deflection machine knob rotate angle from -20 degree to+20 degree (+ 20 degree to one 20 degree) when, while derailleur 7 being pulled to stir on chain 5 to tooth set 15, chain 5 is placed in neutral position, and chain 5 is empty Turn.When knob rotation deflection machine+20 degree of deflection machine is to+30 degree (+30 degree to+20 degree), derailleur 7 stirs chain 5, makes chain 5 are placed on forward direction powershift gear 12, and people drive crank 2 by scrunching, and crank 2 drives central gear 11 to rotate clockwise, by In on the fixed flange connector 16 for being located at forward direction powershift gear 12 of central gear 11, forward direction is also rotated clockwise with powershift gear 12, Eventually by chain 5 and flywheel, rear wheel is driven, power is provided, the entire transmission chain of bicycle is completed；In this way, making certainly Driving can firmly be ridden with both forward and reverse directions, be advanced forward as cycling, to achieve the purpose that take exercises.

The present utility model design is that people's inverted walk can take exercises, especially beneficial to prolapse of lumbar intervertebral disc, Row is called " moving back ", is a kind of physical training style risen in recent years, is medically referred to as " unusual state therapy ".Wherein again because Backward has feature easy to learn, therefore is liked by the middle-aged and the old.There is data to show, backward is walked or backward race can be stimulated and seldom be lived Dynamic muscle, promotes blood circulation, and improves the equilibrant force of human body, can also prevent and treat encephalatrophy, especially has significant treatment to pain in waist and lower extremities Effect, overweight people appropriate can also lose weight.According to the measurement of science, the energy of people's consumption 78% more than walking forward in inverted walk, Heart rate will increase by 47%；Backward running will consume 31% energy more, and heart rate increases by 15%.Therefore backward can consume more energy Amount, a kind of good method for exercise of can yet be regarded as.People are with behavior master forward for a long time, and human posture, pelvis are when moving ahead It turns forward, cervical vertebra, lumbar vertebrae, psoas muscle, ankle knee joint are slowly generated all in compared with tense situation as the very long years go over Some habitual chronic strains.And just on the contrary, muscle group and bone that neck, waist etc. can be made in tension when backward Bone is relaxed accordingly, thus the adjustment and rehabilitation at the position that is conducive to strain, therefore the effect of backward truly has body-building.Equally, Cycling is same, if riding backwards, does not see that subsequent traffic condition is dangerous, by the implementation of the utility model from Driving can firmly be ridden with forward and reverse, all advanced forward, changed original defect.

Utility model works principle are as follows: when bicycle positive direction is (clockwise) firmly rides, chain 5 is arranged in forward direction With on powershift gear 12, people drive crank 2 by scrunching, and crank 2 drives central gear 11 to rotate clockwise, due to central gear On the 11 fixed flange connectors 16 for being located at forward direction powershift gear 12, forward direction is also rotated clockwise with powershift gear 12, eventually by chain Item 5 and flywheel drive rear wheel, provide power, complete the entire transmission chain of bicycle；When bicycle opposite direction (counterclockwise) When firmly riding, the setting of chain 5 is reversely driving crank 2 on powershift gear 18, people pass through to scrunch, and crank 2 drives centre tooth Wheel 11 rotates counterclockwise, and since central gear 11 is meshed setting with planetary gear 17,17 phase of planetary gear is then rotated clockwise, Along with planetary gear 17 is meshed setting with tooth set 15, to also be rotated clockwise with movable tooth set 15, because of 15 sides of tooth set Fixed set reversely uses powershift gear 18 on face, therefore is reversely also rotated clockwise with powershift gear 18, eventually by chain 5 and flywheel, drives Dynamic rear wheel, provides power, completes the entire transmission chain of bicycle.So that bicycle can firmly be ridden with both forward and reverse directions, It advances forward as cycling, to achieve the purpose that take exercises.

The specific embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the utility model is not It is limited to above embodiment, within the knowledge of a person skilled in the art, various changes can also be made to it Change.

Claims (4)

1. a kind of positive and negative firmly chain wheel for bicycle, it includes chain wheel component, and chain wheel component is located on bicycle middle shaft, in Axis is located on vehicle frame, and chain wheel component is connected with the gear set being located on rear wheel wheel shaft by chain, and chain is located at derailleur On, derailleur is located on vehicle frame, it is characterised in that: chain wheel component includes central gear, positive powershift gear, fixed disc, tooth Set, planetary gear and reversely use powershift gear, forward direction with flange connector is set on powershift gear, central gear, center are set on flange connector Gear is meshed setting with planetary gear, and planetary gear is laid on fixed disc, and fixed disc is set on axis, planet Gear is meshed with tooth set setting, and tooth is sheathed on the positive chain wheel and reversely firmly between chain wheel of exerting oneself, and sets on tooth set one side Powershift gear is reversely used, central gear center is equipped with axis hole, and is set on axis by axis hole fixation, sets song on the outside of central gear Handle.

2. as described in claim 1 for the positive and negative firmly chain wheel of bicycle, it is characterised in that: the planetary gear is four A, planetary gear is located on fixed disc by fixing axle.

3. as described in claim 1 for the positive and negative firmly chain wheel of bicycle, it is characterised in that: the flange connector is four It is a, uniformly it is located on positive powershift gear by rivet.

4. as described in claim 1 for the positive and negative firmly chain wheel of bicycle, it is characterised in that: the derailleur is for stirring Chain is arranged in positive powershift gear or reversely on powershift gear, and is connected with the deflection machine being located on handlebar by chain.