CN1876475A - Folding gear transmission mechanism of rickshaw - Google Patents

Abstract

The invention relates to a foldable gear transmission device used in man-powered cart, wherein based on prior art baby carriage, wheel chair, etc, it adds one pedal foldable transmission device, without changing the functions and operations of present carts. It can improve the speed, reduce the time, improve the efficiency, and reduce the weight. And the lever wheel chair can change the traditional motion of man-powered wheel chair, to walk by swinging lever with hand, and walk driven by the gear or chain wheel.

Description

A kind of folding gear transmission mechanism of rickshaw

Technical field the present invention relates to folding bicycle and Carriage for baby, wheel Wheel-chair, baggage car, shopping cart technique.

Background technology is present, and mostly vehicles such as commercially available perambulator, child's car, shopping cart, baggage car and belt wheel pull bar baggage container are folding, easy to carry and store, has also alleviated people's fatigue, has made things convenient for the customer.But, these vehicles all are that walking shoves along or hauls away, both tired waiting a moment, the wheel Wheel-chair be by two hands of wheelchair-bound human respectively rotational fixation pushing away in circle walking in the wheel outside or by others and walking, people on this wheelchair not only can dirty hand, wipe dirty sleeve, and is also very tired, particularly the elderly of difficulty in walking, by others' hand push, the people of go-cart is also tired also slow.Folding bicycle all is the sprocket wheel chain gear, because wheel is little, speed is low, will add big speed ratio, so drive sprocket is all bigger, has just increased weight and area, and the greasy dirt of sprocket wheel and chain folding also make dirty easily when carrying hand and clothing.

Summary of the invention the present invention is directed to the problems referred to above that exist in the existing similar above-mentioned vehicle technology, a kind of folding gear transmission mechanism is provided, its main purpose is: this mechanism on the one hand can only the walking hand push with these or the vehicle that hauls away become and can ride seat with the moving vehicle of pedal, both alleviated user's labour intensity, improve speed again, reached time saving and energy saving purpose; Still kept original collapsible making on the other hand in the mode of carrying and carrying out or pulling away;

Another object of the present invention is the have greasy dirt and the bulky sprocket wheel chain gear of folding bicycle are changed into sealing and the little gear transmission of volume, makes the folding bicycle running part not reveal greasy dirt, and lighter volume is littler.

A further object of the invention is: change wheelchair rotates two-wheeled outer ring or others' hand push at present by both hands the mode of advancing, make wheelchair can be hand or others ride and pedal walking, reach the also light laborsaving purpose of not dirty hand.

Above-mentioned purpose of the present invention is achieved in that to be made the crossbeam of preceding pipe between axis of cycle frame except that can be laterally folded, can also make and to fold downwards, its folding joint is except that adopting existing folding device, folding downwards also can adopt simple folding device, two sections crossbeams are coupled together with axle, make an arc folder a side to its rotation, on two and middle crossbeam, respective perforations is arranged, can widow bolts the fixed position, or adopt the hand card spring button of folding scooter conveniently to regulate fixedly use location without latch; Rotating beam except that can not regulate length, can regulate the scalable crossbeam of length (flexible crossbeam is fixed-direction, reduces cost, can adopt two great circle pipe box roundlet pipe horizontal or perpendicular putting simple in structure) in addition; Transmission device is (comparable now with hinge wheel diameter minimizing 1/2～2/3 with inner engaging gear mechanism, and the salable greasy dirt that do not reveal of gear), promptly the supporting ingear outer tooth pinion of inner tooth gearwheel transmission that is driven by axis drives hind axle by miniature gears trailing wheel is advanced; Or the leak free center tap is interior by a pair of drive bevel gear of middle shaft drive or helical wheel, (ratchet is except that can be as bicycle freewheel the gear centre to be fixed on chain stay and hind axle ratchet device by the transmission shaft transmission, can also be on axle the left side or midway location) go up the close driven wheel of differential of a pair of envelope or helical wheel and drive rear wheel and rotate that [the secondary speedup by a pair of driving gear transmitting ratio and a pair of driven gear transmitting ratio is because of being that multiplication relationship is (according to gear train transmitting ratio formula, this transmission ratio is that the I=Z axis gear number of teeth/Z transmission shaft is joined the axis tooth number of teeth * Z transmission shaft and joined the hind axle tooth number of teeth/Z hind axle gear number of teeth), not only volume can significantly reduce, and the rotating speed of hind axle can improve a lot, can join the very little wheel of diameter]; There are crank and pedal in the axis two ends; There are scalable and folding vehicle seat conduit and vehicle seat in the vehicle frame rear portion, constitutes the folding transmission device of various multi-form, size specifications.

The preceding pipe of this folding transmission device is equipped with corresponding supporting standpipe and the front-wheel of turning to, or the various manned or cargo-carrying parts of wheel are arranged, just can form conveniently, light and handy, practical, multiple pattern that floor area is few and the folded vehicle of various uses.

Each fixes a balance pivot on wheelchair left and right sidesing supporting frame symmetric position, and lever arm of force extends upwardly and is higher than handrail and can holds and rock back and forth, each hinged connecting rod of short lever weighing arm lower end, the left and right sides, and the connecting rod other end is contained on front-wheel or the trailing wheel bent axle left and right sides crank throw.There is in the middle of the bent axle universal-joint can doubling.

Owing to adopt such scheme, add aluminium alloy or light material manufacturings such as titanium alloy or carbon fiber, make that the present invention is not only light but also little, mix Carriage for baby, vehicles such as old man's car, wheel Wheel-chair, hand-push shopping cart, baggage car and baggage container, neither change original function and occupation mode, increased again to ride and pedaled and some new functions, not only alleviated labour intensity, and improved speed and saved the time and improved efficient, make carry, use more convenient more practical.Folding gear driving bicycle is lighter, volume after folding is littler, carry more convenient, and few dirty hand and clothing.The lever force-saving wheelchair has changed the mode of wheelchair armrest rotating-wheel walking, and shake lever with have gentle hands and just can walk, and not tired not dirty hand.

The invention will be further described below in conjunction with drawings and Examples for description of drawings.

Fig. 1 is a folding gear transmission mechanism structural representation of the present invention;

Fig. 2 Fig. 3 is laterally folded bicycle side-looking and folding back scheme drawing;

Fig. 4 Fig. 5 is that lever force-saving mechanism drives wheelchair front-wheel and folding transmission device wheelchair and pedals and ride and push away away scheme drawing;

Fig. 6 is that lever force-saving mechanism drives wheelchair trailing wheel and the folding back of folding transmission device wheelchair scheme drawing;

Fig. 7 Fig. 8 is crossbeam folding light miniature bike side-looking downwards and folding back scheme drawing;

Fig. 9 Figure 10 is that the existing easy unitor of hand push vehicle is faced and schematic side view;

Figure 11 Figure 12 adopts folding transmission device baggage container scheme drawing;

Figure 13 Figure 14 is side-looking of portable miniature folding transmission baggage car and folding back front elevational schematic;

Figure 15 Figure 16 is portable than folding transmission transfer cart side-looking of heavy articles and folding back scheme drawing;

Figure 17 Figure 18 is portable simple folding transmission car side-looking of old man or child and folding back front elevational schematic;

Figure 19 Figure 20 is with the child to do shopping to fold side-looking of transmission car and folding back scheme drawing;

Figure 21 is an inner engaging gear mechanism transmission scheme drawing;

Among the figure, 1, preceding pipe 2, folding joint 3, vehicle seat conduit 4, vehicle seat 5, quick securing device 6, axis and driving gear 7, transmission shaft 8, trailing wheel 9, hind axle and driven gear 10, chain stay 11, pedal 12, crossbeam 13, front-wheel 14, clothes hanger 15, standpipe 16, handlebar 17, left and right sides stretcher 18, bent axle 19, crank throw hinge 20, connecting rod 21, balance pivot 22, lever 23, lever hinged 24, wheelchair folding stand 25, folding stand rotary supporting shaft 26, crossbeam fixed card 27, backrest 28, seat 29, handrail 30, unitor dwang 31, fixer 32, device for positioning and securing 33, unitor turning cylinder 34, unitor fixed link 35, underframe 36 is held in holder, article tighten up is with 37, holder bolster conduit 38, holder bolster stand 39, put sole 40, rotating seat frame 41, rotate back rest 42, safety strap 43, front baffle 44, upper side frame 45, rear frame 46, rotate joint 47, rotating support 48, holding frame 49, frame underframe 50, between the child 51, front truck beam 52, front-wheel steering supporting 53, wheelchair front-wheel 54, wheelchair trailing wheel 55, baggage container 56, leg 57 at the bottom of the case, luggage wheel assembly 58, crank 59, bearing 60, inner gear 61, external gear 62, external tooth wheel shaft 63, ratchet device

Specific embodiment Fig. 1 shows that have on preceding pipe 1 that folding gear transmission mechanism of the present invention cooperates with the front-wheel steering stem and axis in the center tap and the crossbeam 12 between the driving gear 6 can be to the left or to the right or folding folding joint 2 downwards, crossbeam 12 can also be elastic to regulate the length distance by quick securing device 5, on the center tap or before or after be fixed with vehicle seat conduit 3, the folding joint 2 that can fold is forward arranged at conduit 3 bottoms, vehicle seat 4 inserts in the vehicle seat conduit 3 and can stretch by saddle tube, tighten up with quick securing device 5, can also change straight or turn away plane by folding joint 2 and crank between axis two ends left and right sides crank and the pedal 11, center tap is supported on the hind axle with chain stay 10, axis and driving gear 6 are by transmission shaft 7, transmission hind axle and driven gear 9 drive trailing wheel 8 and rotate.Transmission shaft 7 can also pass from chain stay 10 pipes, is closed.Folding joint 2 and quick securing device 5 all can adopt prior art.

Transmission device is except that with a pair of drive bevel gear or a pair of driven wheel of differential of spiral gear or the helical wheel, also available inner engaging gear mechanism as shown in figure 21, it is fixed annulus 60 on the axis 6, be bearing on the chain stay 10 with bearing with 62 1 on the external tooth wheel shaft of the supporting external gear 61 of inner gear 60, the other end is bearing on the extending beam of crossbeam 12 with bearing 59, crank 58 and crank throw 19 are arranged on the external tooth wheel shaft 62, crank throw 19 is to be with connecting rod 20 with bearing, connecting rod 20 other ends are contained on the crank throw 19 of crank 58 of hind axle 9 with bearing carrier ring too, and hind axle 9 is by ratchet device 63 link to each other with trailing wheel 8 (ratchet can in the middle of trailing wheel or next door).Pedaling pedal 2 makes axis 6 drive internal tooth 60 rotations on it, the little external gear 61 of transmission, the little external gear 61 that rotates by design-calculated speed speedup will make connecting rod 20 spur the hind axle rotation as drive wheel trace pulling wheel under the engine head, thereby trailing wheel is travelled.This mechanism also can make bent axle to axis, and the crank throw boxed rod other end links to each other with the big internal gear crank throw, and with the supporting direct-connected hind axle of little external tooth wheel shaft of engagement in the big gear wheel, ratchet device can be in trailing wheel or by the miniature gears.

Embodiment 1

Fig. 2 shows the side folding formula gear transmission folding bicycle that adopts the present invention to launch.The standpipe 15 of handlebar 16 is passed the preceding pipe 1 of folding transmission device, and at preceding pipe 1 bearing of packing into up and down, there are front fork and front-wheel 13 in the lower end of standpipe 15.Stem 15 is folded to left back turnover, crossbeam 12 is to left folding, quick securing device 5 on the vehicle seat conduit 3 unclamps, vehicle seat 4 is pushed away downwards, can pass between vehicle seat conduit 3 and two chain stays 10, pedal 11 is laterally folded to become a plane with crank, back clothes hanger 14 and folding after the front and back two-wheeled downward, just form a supported at three point, be convenient on the spot place, folding back bicycle as shown in Figure 3.This routine bicycle quick adopts ф 30～40cm, and the optional 3-5 of speed ratio I, its moving velocity is than 26 " bicycle is slow slightly, and moving velocity can turn around according to crank, and the distance that drive wheel travels=л DI calculates (л is that circular constant, D are speed ratio for wheel diameter I).Be faster bicycle gears speed ratio configuration.Have only 60～70 * 38 * 45 centimetres after this type car is folding.

Shown in Figure 7 is the following folding formula gear transmission folding bicycle that adopts the present invention to launch, Fig. 8 is the scheme drawing after folding, the standpipe of pipe 1 makes with front-wheel 13 overlapping to left folding before being about to pass, make handlebar 16 vertical to right folding handlebar 16 lower standing tubes again from laterally transferring to, again the folding downwards rear wheel 8 and hind axle and driven gear of making of crossbeam 12 changeed below front-wheel 13, if the car of two axles distance (speed center of gravity is faster moved after wanting), can crossbeam 12 be stretched downwards by quick securing device 5 allows front and back wheel draw close, folding forward vehicle seat conduit 3, left and right sides pedal 11 folding and planes of crank.It is light miniature bike that this type car adopts 15～30cm wheel (the optional 4-8 of speed ratio I), its folding back size only has 55～75 * 15～20 * 25～40 centimetres, if with titanium alloy or carbon fiber manufacturing only is 5.5～8 kilogram weights, also can pack in sack or the box, be equipped with anti-dirty gloves when folding (wear), carry train, by bus and deposit very convenient.

Embodiment 2

Fig. 4 is shown in Figure 5 to be both can ride to pedal away, but lever shakes away again, also lever force-saving that can shove along and folding transmission wheelchair.Scheme drawing, Fig. 4 are riding conditions.Wheelchair folding stand 24 and seat 28 and backrest 27 still adopt existing folding mode.Handrail 29 rear ends in the left and right sides are connected with backrest 27 frameworks of left and right sides handlebar 16 bottoms respectively that (left and right sides handrail outside can respectively add a frame and make the lever track that seesaws, to guarantee that lever shakes steadily), left and right sides handrail anterior curved downwards respectively with seat about in the of 28 two left and right sides side-strut framves link to each other and be supported on the left and right sides front-wheel bent axle 18 with bearing, wheelchair folding stand 24 upper ends link to each other with limit, Collapsible seat 28 left and right sides frame, the lower end suit is supported on the left and right sides lower support frame with handrail and front-wheel one and can rotates, the balance pivot 21 of left and right sides lever 22 is connected on the side-strut frame of one the right and left with the right and left handrail 29 respectively, lever 22 lower ends " emphasis " link to each other with connecting rod 20 by lever hinged 23, connecting rod 20 other ends join by crank throw hinged 19 and wheel bent axle 18, and (two symmetrical crank throws are in close left and right wheels inboard on the bent axle 18, be to link to each other with " ten " word universal-joint in the middle of the bent axle between two crank throws, both can about mutually transmission, again can be two wheel following left handrails 29 and the doubling together of side-strut frame), the termination of left and right sides connecting rod 20 hinged bent axles 18 can also prolong two tip-tilted left and right sides stretchers 17 respectively; Folding stand rotary supporting shaft 25 and standpipe 15 one, pipe 1 usefulness bearing and nut fixed the composition steering hardware before standpipe 15 passed, the oriented axle that protracts on standpipe 15 below the dress steering hardware, the wheelchair catch bar that can rotate is arranged on the axle, catch bar is transferred to laterally, two ends fix on the lower position of the right and left backrest limit frame, just can ride wheelchair is pushed away away.In the time need not riding, crossbeam 12 is shortened folding being fixed on the crossbeam fixed card 26 downwards, vehicle seat 4 is pushed inward, as shown in Figure 5, just can easily shake lever 22 or step on stretcher 17 wheelchair is gone ahead by the people front and back of seat wheelchair, also can shove along by others.This is taken turns Wheel-chair and also can be used as upper limbs or lower limb patients ' recovery utensil, and just oneself shaking or step on can movable legs and feet or hand or arm, and others rides or push away away and can help motion leg and pin and hand and arm, can soon can be slow, and very safe again.

When not in use, unclamp fixing wheelchair catch bar on the frame of backrest limit, the left and right sides, bar is transferred to vertically, the folding stand rotary supporting shaft is upwards carried, simultaneously the wheelchair both sides are pressed to the centre, just can fold up as existing wheelchair.Can also establish a uncoupling device at hinged 23 places of left and right sides bar bar, make its disengaging when without lever, or lever arm of force be made telescopic, the time spent does not contract down, draws up during use.Be the optional aluminum alloy of expendable weight or titanium alloy or carbon fiber manufacturing, folding transmission drive wheel is selected 12～30cm diameter wheel (speed ratio I selects 3-6, and speed per hour is in 10 kilometers) for use, preferably selects for use as the narrow of sport car and takes turns and narrow seat.

This laborsaving lever wheelchair also can change lever into the driving trailing wheel, as shown in Figure 6.Two wheelchair front-wheels 53 are contained in the front-wheel steering supporting 52, and two wheelchair trailing wheels 54 are to drive bull wheel, have in the middle of the two-wheeled " ten " but the bent axle of word universal-joint any direction bending link to each other, two trailing wheels also can be folding with folding stand 24.The connecting rod 20 of lever 22 lower ends is turned around on the left-right symmetric crank throw hinge 19 that is contained in wheelchair trailing wheel 54, shake lever 22 trailing wheel 54 is rotated to overtake.Also can join putting the connecting rod 20 that sole 39 changes stretcher and left and right sides lever 22 lower end hinges into, make stretcher also can before and after up-and-down movement, be convenient to movable legs and feet.Back, the folding back of the folding transmission device of this car wheel is a built on stilts.

Can also utilize existing wheelchair to repack into to ride and pedal the wheel Wheel-chair, promptly on existing wheelchair folding stand turning cylinder, upwards connect a standpipe, the oriented axle that protracts in position that on standpipe stretches to, faces toward the backrest bottom, the wheelchair catch bar that can rotate is arranged on the axle, the wheelchair catch bar is long consistent with wheelchair backrest width, on bar two ends or wheel limit, the chair back left and right sides frame chucking fixer is arranged, on standpipe, manage and folding gear transmission mechanism before equipped of the present invention, just can ride pedaling and advance.

Above-mentioned wheelchair is except that gear transmission, but also the sprocket wheel chain or=level sprocket wheel chain is (promptly by hinge wheel transmission minor sprocket, again by the hinge wheel transmission minor sprocket on the same axle of minor sprocket) transmission, slowly shake the speed of hurrying up for improving lever, also can on bent axle, install planetary gear speed-changing or internal tooth speed change or external tooth speed-changing mechanism additional, be about to bent axle and separate, by crank throw bent axle big gear wheel transmission two axles miniature gears with left and right sides wheel shaft.

Embodiment 3

Fig. 9 is shown in Figure 10 to be side-looking and the front elevation that existing hand push vehicle uses easy unitor of the present invention, as Carriage for baby, old man's car, disabled person's car, wheelchair, hand-push shopping cart and suitcase with casters etc., hand push is careful to be become pedal and rides a fastrunning, time saving and energy saving.This mechanism adopts 12～30cm diameter trailing wheel 8, standpipe 15 conduits of in preceding pipe 1, packing into, fix with bearing bolts, standpipe 15 can move up and down in conduit, quick securing device is arranged on the conduit mouth, connect decurved unitor fixed link 34 under the securing device position fast, there is Foldable handlebar 16 standpipe 15 upper ends, unitor fixed link 34 can rotate in preceding pipe 1 with conduit and standpipe 15, the oriented unitor turning cylinder 33 that protracts on the unitor fixed link 34, there is right-angled crossing can rotate two unitor dwangs 30 of displacement on the unitor turning cylinder 33,4 transportable fixers 31 are arranged on the dwang 30.Regulate to rotate unitor dwang 30 and mobile unitor fixer 31, make its with the crossbearer that is pushed away the vehicle frame of vehicle back, perpendicular frame or tiltedly frame or handspike or pull bar fix (card jail or clip), just can ride and pedal, time saving and energy saving.Handlebar 16 is pushed away downwards, two handlebars are folding curved downwards, crossbeam 12 is folding downwards and vehicle seat 4 downward pusher block conduits 3 are folding forward, crossbeam 12 and vehicle seat conduit 3 are separately fixed on the anchor fitting 32 of location (can regulate the crossbeam position arbitrarily), pedal 11 folded flat cranks, just become very little very light in carrying, deposit and do not take up an area of the side, also can pack into and wrap or the interior train of going up of box, long journey is all very convenient by air, can be convenient for carrying heavier baggage container and the people that has who pushes away infant or old man stroll, sees a doctor or be in a hurry greatly.

Embodiment 4

Figure 11 is shown in Figure 12 to be to have wheel pulling baggage container to adopt side-looking of the present invention and folding back scheme drawing, with baggage container 55 (or soft baggages, classes such as big handbag or bag) do bottom and by two frameworks that ask bolster conduits 37 and holder bolster stand 38 and handrail 29 (being equivalent to the luggage pull bar) to form and be in the same place, there are article to tighten up in the holder bolster stand 38 and are with 36, be convenient to other carryon is tied together, luggage wheel assembly 57 (but wheel diameter φ 8～15cm) is arranged at holder bolster conduit 37 bottoms, leg 56 at the bottom of the case is respectively arranged at its conduit 37 tops and baggage container 55 bottoms, leg 56 is connected to and standpipe 15 parallel at the bottom of the case at the bottom of the case on holder bolster conduit 37 tops, the preceding pipe 1 of assembling the present invention and bearing and nut on the standpipe 15, the baggage container that formation can be ridden away has alleviated the fatigue of pulling away baggage container at a distance greatly.Present embodiment can adopt aluminum alloy, carbon fiber or titanium alloy and other light-weight high-strength material manufacturing, the secondary gear transmission has increased speed ratio, volume is very little, with φ 10～15cm trailing wheel (optional 6-8 of transmitting ratio I, speed per hour is in 10 kilometers), its transmission device part can be relieved in 2 kilograms, and it is all very convenient to carry an aircraft, train and automobile.

Embodiment 5

Figure 13 is shown in Figure 14 to be side-looking of portable minisize foldable luggage trolley and folding back front elevational schematic.Hold in the palm about two width 20cm under the bolster conduit 37 quick securing devices suitable for reading, downward bending has standpipe 15 in the middle of connecting cross bar, pipe 1 usefulness bearing nut was fixed before standpipe 15 penetrated, holder bolster conduit 37 suitable for reading insertions are respectively held in the palm bolster stand 38, being extended with handlebar 16 about two horizontal pipe links in holder bolster stand 38 tops (also can ask bolster stand 38 not insert conduit 37, use simple and easy folding mode instead, holder bolster conduit 37 an inwardly curved arc bayonet socket suitable for reading about being about to, 5～10cm respectively wears a lateral pin under inboard mouthful, lateral pin passes inboard holder bolster stand 38 bottoms side by side simultaneously, holder bolster stand 38 just can be rotated up and down around bearing pin like this, be stuck in arc bayonet socket internal fixation when upwards turning to conduit 37 straight line parallels, making holder bolster conduit 37 add holder bolster stand 38 length increases; Overlapping asking bolster stand 38 to rotate with conduit 37, its contraction in length).Holder bolster conduit 37 bottoms connect with cross bar, there is the front-wheel 13 of diameter phi 8～15cm its end, on the front-wheel 13 top conduits 37 oriented protract can upwards change with the overlapping holder of conduit 37 hold underframe 35, holder is held underframe 35 and is fastened when protracting in holder and hold on the conduit 37, also has article to tighten up on the conduit 37 and is with 36; Trailing wheel 8 is selected 10～20cm diameter for use, folding after I to 40 * 25 * 15cm, shopping or delivery article carry and deposit all very convenient; With luggage carry by air, by plane, train and automobile be also very convenient.

This folded bicycle width can be made multiple different size specification with length and select for the customer, also can add a folding basket in front uses as shopping or delivery article, promptly about the folding mode of widening between the holder bolster conduit 37 (holder is held on the underframe 35) press certain altitude such as 40cm fixes many fence, just constitute a quadrangle fence frame, make an onesize quadrangle fence frame again, holder bolster conduit about the quadrangle fence and another place bore from top to bottom respectively on the perpendicular frame about this conduit fwd quadrangle fence frame one arrange about to identical hole, with the inwardly curved fence in identical two penetrate respectively in four perpendicular framves of former and later two quadrangle fence framves hole curved more once, the every fence of putting on can not come off also can rotate, ready-made basket bottom is added fence, holding underframe 35 with regard to formation with holder is the Shopping Basket of supporting, can contain bulk product; Upwards turnover is folded just overlapping with holder bolster conduit 37 basket, and holder is held on the underframe 35 and can be put self-contained article, rides and pulls away; Underframe 35 is held in holder upwards changes overlapping again, and car load is folding can be deposited or carry.

Figure 15 Figure 16 shows that portable than side-looking of heavy articles folded bicycle and folding back scheme drawing, its structure and Figure 13 Figure 14 are basic identical, different only on the position of size and front-wheel 13 dresses, these car front-wheel 13 usefulness bearing supports are contained in holder and hold on the underframe 35, bearing support can rotate, and holds on the underframe 35 with fastening in holder during cargo transport.Wheel adopts 10～30cm diameter.

Embodiment 6

The portable simple folded bicycle side-looking of Figure 17 old man of being shown in Figure 180 or child and face folding scheme drawing.Two long about 50 centimetres holder bolster conduit 37 upper port have quick securing device, 42 1 of its following fixedly safety strap, respectively be combined with the holder bolster stand 38 that to stretch up and down and can pass lower port in conduit 37 upper port, stand 38 tops also are fixed with safety strap 42 other ends, holder bolster conduit 37 has the crossbearer of wide 35～50cm to link to each other from lower end 30～40cm place, the rotating seat frame 40 that long a 25～40cm is respectively arranged backward, seat frame 40 terminations link to each other with rotation back rest 41 lower ends, back rest 41 high 40～60cm, the upper end respectively is connected holder bolster stand 38 tops, rotating seat frame 40 can both rotate with being connected of rotation back rest 41 and can fix, in the middle of seat frame 40 and the back rest 41 with soft cloth class or hardboard but on soft layer is arranged, as long as about also can being fixed on the holder bolster conduit 37 two stretch (can be a bit of) backward to protracting can only the unidirectional mounting that upwards rotates, backrest and seat cloth.Also shouldn't seat frame and back rest, make flap seat with cloth entirely, can also be the telescopic centre folding formula down that changes of the insertion of stand and conduit, promptly do a bar fork at conduit 37 upper ends, holder bolster stand 38 lower ends are put into the fork central bottom to be connected with axle, there is a mouthful downward arc card termination of fork, when holder bolster stand 38 from upwards changeing with its straight line or when parallel with holder bolster conduit 37 is overlapping, can block and firmly pitch the nock internal fixation.Can also the front holder bolster folding or flexible, with regard to crossbearer on the perpendicular frame about two 90～100cm connect the folding transmission device crossbeam in back and saddle tube all be one flexible, crossbeam is only folding downwards, saddle tube is only folding, simple in structure forward.So simpler lighter.Conduit 37 lower ends are held in holder to be had front-wheel and puts sole 39, holder bolster stand 38 upper ends to palintrope a bit about two couple together, manage 1 standpipe downwards before curved parallel with holder bolster stand 38 the passing of one of indirect, fix with bearing nut, the left and right sides, hand steered holder bolster stand 38 upper end pipe link handrail 29 turns to regard to handling.

This car front-wheel adopts power wheel ф 12～15cm transmitting ratio I=5～8cm behind ф 8～15cm, and speed per hour is in 10 kilometers, and (folding back 50-60 * 35-50 * 15 centimetres, wide also can making rotated foldingly up and down, and width is also dwindled because volume is little.Carry the very convenient walking-replacing tool that can be used as band old man, child's tourism or go away.This car folding gear transmission mechanism also can be joined existing hand push baby, child's vehicle, only need in the middle of existing car after cross member, to add root downwards and turn to standpipe, or crossbearer adds a crossbeam after existing car does not have, do one downwards and turn to standpipe in the middle of crossbearer, the preceding pipe of handle riser and folding gear transmission mechanism is supporting just can to change the pushing riding row together.If need not be with seat coach just for making things convenient for usefulness, but dimensions a little car greatly is more comfortable.

Embodiment 7

Shown in Figure 19 is the band child folded bicycle schematic side view of doing shopping.The car pipe is by front baffle 43, rear frame 45 and every fence are curved before and after laterally to be through the left and right sides framework composition that front baffle 43 and rear frame can rotate in the round 45 about, bicycle basket four corners are all collapsible fixing, frame underframe 49 rides over card jail on the left and right sides two-wheeled bearing support 47, barrier is arranged in the middle of the bicycle basket, before the bicycle basket is Basket on bicycle for containing article 48, the back is 50 (also can replace with Basket on bicycle for containing article 48) between the child, 50 have seat 28 and safety strap 42 between the child, front truck beam 51 lower ends, the left and right sides are connected with rear frame 45 by two preceding supporting upper ends, connect left and right sides rear frame 45 simultaneously, and curvedly downwards in the centre connecing standpipe 15, standpipe 15 passes preceding pipe, fixes with bearing nut, the folding joint that should fold the crossbeam 12 of transmission device changes the preceding pipe left and right sides into and rotates joint 46 and fixed card is arranged, more press close to after folding like this, few occupation of land side is as the folding back of Figure 20 scheme drawing.This car can be looked after children out and be gone shopping or with usefulness such as child and Na article, bring very big facility can for the people who looks after children; This car also can change makees shopping cart, be about to bicycle basket do little, not in spacer grid, make equally and overturn, it is few to put occupation of land face, shopping haul, pushing away and riding all can, extremely convenient.

Claims (10)

1, a kind of folding gear transmission mechanism of rickshaw, it comprises wheel, steering hardware, brake equipment, it is characterized in that: folding crossbeam and folding vehicle seat selective gear transmission device are inner engaging gear mechanism, the supporting ingear outer tooth pinion of inner tooth gearwheel transmission by axis drives drives hind axle by external gear trailing wheel is advanced; Or to the big a pair of passive big miniature gears of pinion drive hind axle initiatively trailing wheel is advanced by axis.

2, according to the described a kind of folding gear transmission mechanism of rickshaw of claim 1, it is characterized in that: crossbeam can also be two-tube flexible except that can single tube flexible; Saddle tube is except that stretching up and down in the vehicle seat conduit, also can passing the crossbeam, and the vehicle seat conduit can also fold forward.

3, according to the described a kind of folding gear transmission mechanism of rickshaw of claim 2, it is characterized in that: there is curved splint on crossbeam and vehicle seat conduit both sides that the folding downwards and vehicle seat conduit of crossbeam is folded in folding direction forward, and clamping plate and crossbeam and conduit correspondence position have more than two perforation and have latch; Or crossbeam and vehicle seat conduit internal fixation telescopic spring button, the porose button that pierces into of both sides clamping plate correspondence position.

4, according to claim 1 or 2 or 3 described a kind of folding gear transmission mechanism of rickshaw, it is characterized in that: laterally folded bicycle, but the front and back wheel left and right sides is overlapping; The downward folding bicycle of crossbeam, front and back wheel can be overlapping up and down.

5, according to claim 1 or 3 described a kind of folding gear transmission mechanism of rickshaw, its spy is: the parts that turn to of folding transmission device turn to parts to match with suitcase with casters or baggages, and forming can the pressure-bearing steering hardware.

6, according to claim 1 or 3 described a kind of folding gear transmission mechanism of rickshaw, it is characterized in that: the steering hardware that turns to parts to match to form the energy pressure-bearing of centre on the last crossbearer that turns to parts and the framework that constitutes by two vertical tubes and two cross bars of folding transmission device, there is wheel two vertical tube lower ends, and bracket or manned seat are arranged on vertical tube and the crossbearer.

7, according to claim 1 or 3 described a kind of folding gear transmission mechanism of rickshaw, it is characterized in that: existing wheelchair folding stand intermediate rotary shaft is prolonged upwards curved stretching making near the back of backrest backward turn to standpipe, match with the preceding pipe of folding transmission device, form steering hardware; Stretch to forward on the standpipe have on the axle of backrest bottom can rotate with the isometric wheelchair catch bar of backrest limit, left and right sides frame width, the two ends of bar or take turns on the frame correspondence position of limit, the chair back left and right sides anchor fitting is arranged.

8, a kind of laborsaving lever wheel Wheel-chair, it comprises wheel, wheelchair folding stand, left and right sidesing supporting frame and handrail, seat and backrest, it is characterized in that: each fixes a balance pivot on the wheelchair left and right sidesing supporting frame symmetric position, lever arm of force extends upwardly and is higher than handrail and can holds and rock back and forth, each hinged connecting rod of short lever weighing arm lower end, the left and right sides, the connecting rod other end is contained on front-wheel or the trailing wheel bent axle left and right sides crank throw, has in the middle of the bent axle universal-joint can doubling.

9, described according to Claim 8 a kind of laborsaving lever wheel Wheel-chair, it is characterized in that: wheelchair folding stand intermediate rotary shaft is prolonged backward bend towards near making and turn to parts in the backrest back, backrest bottom correspondence turns to the oriented axle that protracts on the parts, have on the axle and can rotate and the isometric wheelchair catch bar of backrest limit, left and right sides frame width, on the two ends of bar or limit, the left and right sides, the backrest bottom frame correspondence position anchor fitting is arranged; Turn to parts to be furnished with as a kind of folding gear transmission mechanism of rickshaw or sprocket chain strip transmission mechanism as described in claim 1 or 3.

10, according to Claim 8 or 9 described a kind of laborsaving lever wheel Wheel-chairs, it is characterized in that: the front end of rod hinge connection is connected to tip-tilted stretcher.

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