CN106428389A

CN106428389A - Stepping type no-chain no-middle-shaft infinitely-variable-speed folding bicycle

Info

Publication number: CN106428389A
Application number: CN201610585952.3A
Authority: CN
Inventors: 黄建
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-07-22
Filing date: 2016-07-22
Publication date: 2017-02-22

Abstract

The invention relates to a stepping type no-chain no-middle-axle infinitely-variable-speed folding bicycle. The stepping type no-chain no-middle-axle infinitely-variable-speed folding bicycle is characterized in that a hollow shaft, one-way bearings, gears, crank telescopic rods and the like are used for replacing an middle shaft, cranks, crank discs, a chain, flywheels, a variable speed device and the like of a bicycle in the prior art, and are arranged in composite wheel hubs, and whole close of wheels and shaft transmission parts is formed. According to the stepping type no-chain no-middle-axle infinitely-variable-speed folding bicycle disclosed by the invention, the driving form, the transmission mode, the speed change method, the appearance style and the folding situation of the bicycle throughout history are changed, and common steering of a front wheel and a rear wheel is adopted, namely that the circular pedaling driving type of the bicycle is changed into a stepping type; chain transmission or transmission shaft transmission is changed into gear transmission; the speed change through adjusting gear ratio is changed into the infinitely-variable speed change through extending (or contracting) crank rods; the functions of the middle shaft are achieved by a front shaft concurrently, and the middle shaft manner of the bicycle is omitted; and the front wheel steering is changed into the common steering of the front wheel and the rear wheel, and internal rotation and folding of the front wheel and the rear wheel are realized.

Description

Step steps on formula no chain no axis variable speed folding bicycle

First, patent name：

Step steps on formula no chain no axis variable speed folding bicycle

2nd, technical field：

The present invention relates to a kind of, step steps on formula no chain no axis variable speed foldable bicycle, it is characterized in that：Using sky Heart axle, ratchet, crank etc., making bicycle realize step, to step on driving, no Chain conveyer, variable speed, default axis, front and back wheel common Fold with steering, folded etc..

3rd, background technology：

At present, the driving of bicycle, is stepped on circumference and pedals crank implementation at axis；Transmission mostly then is chain or power transmission shaft；Become Speed is then realized with flywheel teeth ratio with adjusting chain wheel；Due to the presence of axis, after folding, the scale of construction is larger.There is following deficiency：

1. circumference is stepped on and is pedaled, and the angle of power and the arm of force need to constantly change, and moment generation in subregion is little, have dead point；Conversion work( Imitate low, fatiguability.When common heavy burden bicycle goes up a slope, step on positively and invertedly and pedal situation it was demonstrated that the drawbacks of circumference steps on stepping bicycle.

2. around the crank (pin connecting lever) of middle shaft rotation, by height off the ground, user's physiology (leg length) impact, Design of length is subject to Limit (typically in 180mm about), maximum input torque is it is impossible to have increased access to by toggle-action lever length.

3. gear, parts are many, and smooth, convenience is poor；Variable speed high cost.

4. chain (or power transmission shaft) transmission device, transmission distance, component are many, reliability, durability, terseness, conversion Efficiency etc. is relatively low.

5. because being provided with axis, body construction is complicated, and big wheel footpath folds, portable difficulty.

4th, content of the invention

In order to overcome the shortcomings of that the aspects such as the driving of prior art bicycle, transmission, speed change, folding have, the present invention provides A kind of bicycle of brand-new theory, this car take step step on formula drive, no Chain conveyer, the telescopic speed change of toggle-action lever, and because in default Axle is more easy to folding portable.

The technical problem to be solved in the present invention is：

1. become bicycle circumference to step on and pedal, for having more hommization, scientific step steps on formula and drive.

2. become the speed change that tooth is than adjustment, be the no rank speed change of the arm of force (crank) length adjustment.

3. change prior art chain (or power transmission shaft) transmission, for the direct geared transmission being closed in wheel hub.

4. cancel axis setting, by its function and service in drive sprocket axle, be placed in the driving wheel wheel hub of closing.

5. the folding realizing bicycle is convenient, and more small-sized, practical.

5th, technical scheme：

The technical solution adopted for the present invention to solve the technical problems is：Using hollow shaft, unilateral bearing, gear, crank Expansion link etc., substitutes the axis of prior art bicycle, fluted disc, chain, flywheel, speed change gear, and assembles and be placed in combined wheels In hub, form full closeding state.

(1) parts of the present invention and function are：

1st, crank is made up of crank for extension bar, crank axle, fan-shaped thumb wheel.Function：Acceptance step legpower, produces driving force square, Fan-shaped thumb wheel through crank, I type drive, ratchet, revolve before being transferred to wheel hub driving moment.

2nd, by hollow shaft, right-angled intersection is affixed to be formed cross hollow shaft.Function：Also serve as the wheel shaft of driving wheel, solid with front fork Connect formation pedestal：Interior hinge fixed crank axle, I type power axle, the ratchet of outer hinge fixation and wheel hub one, wheel bearing.

3rd, I type drive is formed by large and small gear and power transmission shaft are affixed.Function：The sector of little gear and both sides crank is dialled Wheel engagement, makes two fan-shaped thumb wheel move toward one another, drives toggle-action lever to rise one after another；Transmit moment to the ratchet of both sides.

4th, ratchet is composited by unilateral bearing and gear ring, and that is, the outer ring gear ring of unilateral bearing substitutes.Function： Left and right side ratchet, alternately accepts the moment of the I type drive transmission being engaged with, and picks up respectively and sew front spin square and pass through Inner ring is transferred to affixed compound hub it is ensured that wheel obtains continuously front spin square.

5th, compound hub will be affixed with the inner ring of each side ratchet for the both sides collar plate shape wheel hub center of circle；Both sides wheel hub outer rim And rim of vehicle wheel, affixed with screw, form compound hub.Function：Both there is the function of wheel hub, above-mentioned transmission dress can have been closed again Put, play cleaning protective effect attractive in appearance.

6th, extension and contraction control wheel (flywheel) is placed on toggle-action lever (outer bar), is engaged with toggle-action lever (interior bar) by the gear teeth.Work( Energy：User can stir extension and contraction control wheel with sole, makes outer bar relative motion in crank, and adjustment toggle-action lever is long, realizes speed change.

7th, vehicle frame by five kinds of parts is：Handlebar, front fork, middle frame, vehicle seat, back vent composition.Each component function：

(1) handlebar, fixing parking brake；Handlebar axis are hinged with front fork shaft coaxial, can be movable relatively；Handlebar shaft gear and rear slotting axle Gear engages, and rotating handlebar can make trailing wheel guide；Open fixed handle, handlebar is foldable or adjusts applicable position.

(2) front fork, affixed with front axle (cross hollow shaft) is collectively forming fixed pedestal；Lower pair of limb of fork and cross hollow shaft The affixed one in two ends, upper end is hinged hinged through middle frame and handlebar axis；Open fixed handle, front fork can be rolled over around middle frame axle bed inward turning Folded；Be locked handle and middle frame consolidation one.

(3) frame in, handlebar, front fork, vehicle seat axle, rear fork shaft etc. assemble the part of one；The fixing hand of middle frame setting Handle, play timesharing fix or hinged each reference axis effect.

(4) vehicle seat, using mounting；Frame in the hinged insertion of vehicle seat axle, controls adjustable height, torsional direction through handle.

(5) back vent, rear fork shaft is hingeably secured to middle frame, and hind axle is fixed in back vent bottom；Penetrate the back vent shaft gear of middle frame, Engage with handlebar shaft gear；Handlebar dextrorotation, after two gearings, fork shaft (trailing wheel) is left-handed, realizes bicycle and turns right.

(2) the technical solution adopted for the present invention to solve the technical problems is：There is unit by above-mentioned seven kinds of functional parts Close, realize bicycle step step on, forerunner, variable speed, rear-axle steering, no chain, no axis, foldable.

1st, transmission mechanism combination

(1) pedestal：Fixing left and right sides crank axle, the power transmission shaft of I type drive is cut with scissors in cross hollow shaft；Now, I type passes The large and small gear of driving wheel, engages appropriate respectively with the ratchet of left and right sides, the fan-shaped thumb wheel of crank；By cross hollow shaft Left and right end and the affixed one of front fork, constitute the pedestal of fixed conveyor component.

With I type drive axis, point left and right side assembling combination parts.

(2) right side members：Make cross hollow shaft hinged through the ratchet inner ring affixed with right side wheel hub, right with front fork Limb is affixed；With crank axle right-to-left hinged through right section of cross hollow shaft, be fixed in fan-shaped thumb wheel；Now, pedestal is hinged solid The fixed large and small gear of I type drive, is engaged with the gear ring of ratchet, the fan-shaped thumb wheel of crank respectively.

(3) left-hand side part combination, same to right side.

(4) after the assembling of transmission mechanism parts puts in place, the fan-shaped thumb wheel of two cranks, engages I type drive little gear；I type The gear wheel of drive, then engage ratchet；Transmission mechanism is sealed in wheel hub (left and right wheel hub and rim are in Hub side The affixed closure of edge)；Finally, the affixed crank axle of left and right toggle-action lever；Complete to walk the assembling stepping on formula driving means.

2nd, stepless speed changing mechanism

The technical scheme of speed change of the present invention, is to be stretched using toggle-action lever, adjusts torque arm length, realize electrodeless variable-speed.

Gear, is equivalent to the lever of deformation；The speed change of adjustment gear ratio, is also the speed change of lever length adjustment. Existing transmission technology, constant is crank (connecting lever) length, and change is tooth ratio.The transmission technology of the present invention, in contrast, that is, solid Determine tooth ratio, change crank (connecting lever) i.e. torque arm length, realize speed change.

Because of the fan-shaped thumb wheel of the present invention, I type drive, ratchet etc., the footpath level (or number of teeth) of driving member immobilizes, I.e. gearratio is constant.Equal conditions, increase toggle-action lever length is then laborsaving, consistent with the effect reducing fan-shaped thumb wheel footpath level；Also with now There is technology tooth more identical than the result after diminishing, all can achieve speed change.

3rd, guide and fold

Guiding：The present invention takes front-wheel, trailing wheel to be simultaneously directed to.Handlebar axis are coaxial with front fork shaft, by the hinged fixation of middle frame；When When need to turn right, handlebar orders about after coaxial guide gear drive is engaged with and leads to dextrorotation then front-wheel dextrorotation, simultaneously handlebar axis Promote rear wheel fork and trailing wheel to anticlockwise to gear, realize synchronization and turn to the right.(left steering, principle is identical.)

Fold：The folding scheme of the present invention, takes handlebar left-handed, that is, form front and back wheel doubling and fold；Loosening handlebar With joystick on middle frame, handlebar leans forward, and vehicle seat can fall.

6th, beneficial effect：

1. become bicycle circumference to step on and pedal, for having more hommization, scientific step steps on formula and drive；Driving moment can be increased, carry High flesh energy conversion efficiency, enhancing grade climbing performance, lifting riding speed, increase comfort level, reduce degree of fatigue, using light, province Power, durable it is easy to long-distance ride.

2. become the speed change of adjustment multi-stage gear tooth ratio (gearratio), realize no rank for the adjustment arm of force (crank) length and become Speed；Stepless speed change device, simple and direct, smooth, reliable, low cost, easily realization.

3. change prior art chain (or power transmission shaft) transmission, be the direct geared transmission of wheel hub closing；Transmission safety, can Lean on, efficiency high, cleaning, attractive in appearance, durable.

4. cancel axis setting, by its function and service in hollow drive sprocket axle；Simplify body frame, save space, Solve big wheel footpath folded bicycle, drive disk assembly is exposed, fold a difficult problem inconvenient to carry.

5. bicycle guide is to easily quick.

6. realize the fast folding of bicycle and develop in miniature, practical, facility.

7th, accompanying drawing and explanation：

In conjunction with lower drawings and Examples, the present invention is further described.

Fig. 1 is that step steps on formula no chain no axis variable speed folding bicycle, transmission mechanism schematic diagram；

Fig. 2 is that step steps on formula no chain no axis variable speed folding bicycle, car load schematic side view；

Fig. 3 is the profile at Fig. 1 transmission mechanism A-A position.

In figure：

1. ', 1. limb about front fork；2. cross axle hollow shaft；3. ' I type drive；Gu 4., 3. I type drive is large and small Wheel；5. ', 5. left and right sides ratchet gear ring；6. ', 6. left and right sides ratchet inner ring；7. ', 7. left and right sides crank axle；8. take turns Circle；8. ' compound hub combination part；9. ', the fan-shaped thumb wheel of 9. left and right sides crank；10. ', 10. left and right sides wheel hub； Left and right sides crank (outward) bar；Left and right sides crank (interior) bar；Left and right sides toggle-action lever flexible valve；Left and right sides pedal；Joystick；Middle frame；Handlebar；Handlebar guide gear；Guide gear afterwards；Vehicle seat；Trailing wheelRear wheel fork

8th, specific embodiment：

The specific embodiment of the invention is：

(1) step is stepped on formula and is driven

See accompanying drawing 1, accompanying drawing 3, work as right pedalWhen accepting legpower, toggle-action leverAffixed crank axle is driven 7. to rotate 9. (lower end entrance paper), drive the fan-shaped thumb wheel 7. consolidating with crank axle, stir I type drive 3. ' wheel 3., wheel 4. forward direction Rotation (clockwise), 4. wheel drives the gear ring of the ratchet of engagement 5. to drive inner ring 6. (now, unilateral bearing function is in lock 6. 5. death situation state, be synchronized with the movement), drive the wheel hub 10. front rotation of consolidation one；

Now, left side and the ratchet gear ring that 4. engages of wheel 5. ' reversely rotate (revolving afterwards), gear ring 5. ' and ratchet Inner ring 6. ' be in the surmounted state (allow 5. ' 6. ' relative motion) of unilateral bearing, be not blocked from the front rotation of wheel hub.

Meanwhile, 3. drive stirs the thumb wheel engaging another side (left side) 9., around left crank axle 7. ' and toggle-action leverPedalIt is rotated away from into paper, i.e. left side pedalLift；Step on acting for left foot step to prepare.

Left side step is stepped on, and principle is ibid.

Both the above state, all front rotation of wheel hub.So, left and right replaces step and steps on, and driving moment is successively advanced.

When left and right pedalAll stop force, wheel hub rotates forward according to inertia, the two unidirectional teeth with wheel hub consolidation Wheel inner ring 6. ' with external toothing 5. ', be all in and can surmount state, that is, external toothing is static, do not affect inner ring and revolve forward with wheel hub Dynamic.

If bicycle backward of the present invention, have wheel hub 10. ' drive ratchet inner ring 6. ' backspin, now unidirectional Bearing function is in locking state, that is, the outer ring of ratchet 5. ' with 6. ' synchronous backspin, and 5., 5. ' in both sides engagement In same drive 4., result is that back spin is offset, and bicycle stops abruptly.

(2) variable speed

Referring to accompanying drawing 1, accompanying drawing 3, the drive disk assembly gearratio of the present invention is constant, that is, fan-shaped thumb wheel 9. ', drive 3. 4. And ratchet 5. ' the number of teeth constant.

Toggle-action lever flexible valveCrank (interior) bar can be made(outward) barRelative telescopic.

Work as crankIt is punctured into the most in short-term, to drive sprocket axle, the moment of torsion of generation is minimum for step legpower, drives sense to eat Power, steps on frequency accordingly slow；Under equal conditions, pedalWithin the unit interval, stroke (frequency × displacement) is the shortest.(be equivalent to The maximum tooth of existing multi-speed bicycle is than state).

Conversely, working as crankWhen extending the longest, step legpower, to drive sprocket axle, the moment of torsion relative maximum of generation, drives The most laborsaving, stepping on frequency should be the fastest, pedalWithin the unit interval, stroke is the longest.(be equivalent to prior art multi-speed bicycle, Little tooth is than state).

When crank pole length changes between above two limiting condition, that is, implement no rank speed governing.

(3) guide and fold

Referring to accompanying drawing 2

1st, it is directed to make the smooth of front-driving bicycle enforcement, the present invention takes trailing wheel to guide.Middle frame is by handlebar axis and front fork The hinged fixation of axle；When need are turned right, handlebarTo dextrorotation, order about coaxial guide gearDrive the rear guiding being engaged with GearWith trailing wheel to anticlockwise, realize turning to the right.During left steering, principle is identical.

2nd, fold and loosen three folding joysticksHandlebarCan go to, with guide gearOne-tenth is hinged can be relatively Motion；Front and rear wheel all can the inside paired fold type folding of rotary；Vehicle seat can fall and rotate freely.

Claims

1. a kind of step steps on driving, no chain, the folding bicycle of no axis, variable speed；It is characterized in that：Using ratchet, pick up Sew the unidirectional force of interruption, be allowed to coherent acting, realize step and step on formula Continuous Drive bicycle.

2. bicycle according to claim 1, is characterized in that：The length of adjustment crank bar, realizes bicycle no Level speed change.

3. bicycle according to claim 1, is characterized in that：The default setting framework of axis of bicycle.

4. the bicycle according to claim 1,3, is characterized in that：Forward and backward wheel, with front and rear fork inward turning, realizes bicycle pair Fold type folding.

5. bicycle according to claim 1, is characterized in that gear ring is made in the outer ring of unilateral bearing, becomes ratchet.