CN1105053C

CN1105053C - Full-foldable bicycle

Info

Publication number: CN1105053C
Application number: CN96117195A
Authority: CN
Inventors: 鲍建华
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-11-28
Filing date: 1996-11-28
Publication date: 2003-04-09
Anticipated expiration: 2016-11-28
Also published as: CN1156105A

Abstract

The present invention relates to a folding bicycle which is mainly composed of a folding front wheel, a folding rear wheel, a folding bicycle frame, a handlebar and a lever type gear driving device, wherein the structures of the folding front wheel and the folding rear wheel are same, and the folding front wheel and the folding rear wheel are both composed of three cambered wheel clacks and front hubs thereof and rear hubs thereof, wherein each wheel clack is composed of a cambered wheel ring section and a cambered tyre sealing section thereof, both ends of the wheel ring section of each wheel clack are connected with a pair of cambered spokes, and the middle parts of each pair of spokes are connected with the corresponding front hub and the corresponding rear hub in a dismountable mode to cause the three wheel clacks are tightly abutted to form the front wheel and the rear wheel; the folding bicycle frame is composed of a front fork, a rear fork, a bicycle beam and a folding bracket; the lever type gear driving device composed of a pedal, a ratchet wheel, a driving gear group and a driving speed changer is connected with a rear wheel shaft in a rear wheel hub.

Description

Full-foldable bicycle

The present invention relates to a kind of bicycle, particularly a kind of Foldable bicycle.

Bicycle is from inventing the history in year surplus in the of existing 200 so far, and through constantly developing and improving, its structure is increasingly rationalized, and performance is constantly improved.People in life not only it as the instrument of riding instead of walk and carrying cargo, also it is used to travel, physical training and match unexpectedly.Because bicycle serves many purposes, strong, simple in structure to road worthiness, from heavy and light, cost is lower, maintenances is easy, do not need the energy, pollution-free, noiselessness, easy to use flexibly, therefore be able to great universal.Even in the developed country that automobile is quite popularized, bicycle also is popular.China is bicycle big country, occupies bicycle for each person and occupies first of the world.Along with urban population growth, Urban House forward Development of High-rise Buildings, and the contradiction of depositing the bicycle difficulty is outstanding day by day, ordinary bicycle is owing to can not fold, not only be difficult to bring up to move down, and put occupation of land at home greatly, be in the way very much, be parked in dangerous again downstairs, the obstruction of also exposing to the sun and rain passage, for this reason, person property's power that country need cost a lot of money is built the indoor bicycle parking area with the urban land that takies preciousness, even the garage is arranged, a lot of bicycles squeeze puts together, it is still inconvenient to deposit into taking-up, often knocks car on every side because of carelessness over because of storing and taking out car.People wish to ride comfortable, attractive in appearance, light, durable, an easy folding bicycle of depositing and carrying.For this reason, multi-form Foldable bicycle arises at the historic moment, but all is difficult to accept for people because of existing shortcomings such as folding ratio is too low, method for folding is loaded down with trivial details, the performance of riding is undesirable or make complexity, cost is too high, outward appearance is not elegant in appearance more or less.A kind of " portable high safety-type bicycle with stepless speed change " for example arranged, number of patent application is 89206058.1, this car is a chair type front-wheel lever variable speed drive (VSD), there are a lot of defectives on its function: the one, left and right sides footboard and resistance arm be not interlock linking cooperation mutually, thereby when one parapodum pedal depresses, the opposite side footboard is lifted, can't realize alternately stepping continuously, car also just can not obtain endlessly power and can't continue to move ahead.Simple expression of first degree lever actuated, only depend on simple extremely limitedly prolongation or shorten resistance arm length and be used as speed-changing mechanism, not only speed changing effect is very little, more owing to the flexible of resistance arm makes the bigger change of application force angle make the fearless loss of power a lot, can only bring the more effect of effort.The 2nd, ordinary bicycle is when riding, the people is the form of being kept upright substantially, this also be because people's balance coordination normally in basic the best when upright, partly lie on the back or during supine position if be in, original balance coordination of health will be had a greatly reduced quality, and exactly being in by bike people, the design of this car partly lies on the back or supine position, and what the trailing wheel that is adopted guiding also ran counter to two-wheel car is the traditional habit of track adjusting wheel with the front-wheel usually, thereby only through outside the people who practices hard for a long time, common people are difficult to and can handle, so the high security of this car is difficult to realize.The 3rd, from the folded structure of this car, also only just with the little track adjusting wheel folding of back and folding to high-wheeled side in front and seat back, folding space shared when launching two states is very nearly the same, folding ratio is very low, so the portable function of this car is very low, its practicality is very low.

The human motion rule thereby that be science, rational size is checked, met to the oad of ordinary bicycle through long-term practice, attitude nature when the people is ridden, be difficult for tired, the comformability of road pavement is also better, and some people is in order to make the bicycle volume after folding littler, very little wheel design, or vehicle frame also micro-miniaturisation, change back-wheel drive into f-w-d or the like in addition, though the volume after having reduced to a certain extent to fold, but reduced the performance of riding simultaneously, this is equal to ordinary bicycle mutually with regard to difficult.

To the objective of the invention is in order addressing the above problem, to provide a kind of and ordinary bicycle sizable, but equal high folding ratio full-foldable bicycle of quick-folding and expansion such as its wheel, vehicle frame, handlebar.

Technical solution of the present invention:

A kind of full-foldable bicycle, it is characterized in that it is mainly by before collapsible, trailing wheel (1), (2), Foldable frame (3) and handlebar (4) and lever gear system are formed, before collapsible, trailing wheel (1), (2) structure is identical, they are by three arc wheel lobes (5) and preceding, rear-wheel hub (6), (7) constitute, wherein taking turns lobe (5) is made up of arc wheel rim section (8) and arc sealing tire section (9) thereof, each two ends of taking turns lobe circle section (8) all is connected with a pair of arc spoke (10), each to the middle part of spoke (10) with corresponding before, rear-wheel hub (6), (7) removably connect, before making, back each three wheels lobe (5) fits tightly to before the one formation, trailing wheel (1), (2); Foldable frame (3) is by front fork (11), back vent (12), car beam (13) and folding rack (14) constitute, folding rack (14) flexibly connects with front fork (11) upper end, front wheel spindle in front fork (11) lower end and the front wheel hub (6) links to each other, folding rack (14) links to each other with car beam (13) front end by standpipe (15), the upper end of car beam (13) rear portion and back vent (12) flexibly connects, folding rack (14) upwards activity is connected with collapsible handlebar (4), is connected with by treadle on the hind axle (16) in the rear-wheel hub, the lever gear system that ratchet and driving gear set and transmission gear shift device are formed.

The present invention is owing to solved common wheel and can not fold with sprocket transmission device and can not fold all key issues, thereby its folding ratio is very high, after this car exhibition is opened, sizableness is in ordinary bicycle (trailing wheel footpath 71cm, front-wheel footpath 57cm), and the volume after folding only is equivalent to a common folded seat half size after folding, thereby no matter deposits at home or unit, all do not tie up activity space, can be convenient for carrying when going on business and travelling yet.This car folding and expanding is easy, and is handsome in appearance generous, and it is comfortable laborsaving to ride, and except folding, compares with ordinary bicycle, also has many advantages, and for example: (1) transmission performance is better; (2) cleaner and tidier than sprocket wheel, can not twine and stained clothing; (3) its transmission system is than existing multi-chain gear wheel transmission system good integrity, and the break down maintenance rate is low, and speed change is simpler and more direct; (4) step and do not need, can not only step, and it is more random to step the degree of depth, and be in the best state of having an effect at any time, be convenient to improve the speed of a motor vehicle and climbing barrier, because of reducing the knee joint slewing area, be difficult for making knee joint tired simultaneously with higher frequency around ring; Foot-operated parts do not resemble easy frequent damage the ordinary bicycle; (5) need not the lifting saddle, need not can regulate the treadle height according to bicyclist's needs at any time by instrument, as install steel wire loop additional and handle, even can be in the middle adjusting of advancing, conversion treadle height at any time keeps the most comfortable attitude of riding.So this car more has its unique advantages energy than ordinary bicycle, it drives transmission system and also is applicable to ordinary bicycle and racing car, because of need not to be provided with the axis parts, the vehicle frame moulding is more simplified.This car is as adopting material manufacture such as alloy in lightweight, carbon fibre, metal ceramics, its weight is lighter, more can bring into play light portable function, make it the desirable walking-replacing tool that becomes people's daily life, travel on official business, extensively popularizing of it used, can make country remove the investment of building special indoor bicycle parking area from dwelling construction, its social benefit is very huge.

Fig. 1 is an integral structure scheme drawing of the present invention;

Fig. 2 is a folded state scheme drawing of the present invention;

Fig. 3 is wheel rim section, the tire segment structure scheme drawing that the present invention takes turns lobe;

Fig. 4 is the spoke scheme drawing that the present invention takes turns lobe;

Fig. 5 is the section structure scheme drawing of rear wheel rotation lobe of the present invention;

Fig. 6 is the removably connect scheme drawing of structure of wheel hub of the present invention and spoke;

Fig. 7 is the A-A generalized section of Fig. 6;

Fig. 8 is a folding rack scheme drawing of the present invention;

Fig. 9 is the B-B section-drawing of Fig. 8;

Figure 10 is the C-C section-drawing of Fig. 8;

Figure 11 is the D-D section-drawing of Fig. 8;

Figure 12 is a transmission gear shift bar structural representation of the present invention;

Figure 13 is the E-E section-drawing of Figure 12;

Figure 14 is a change lever support scheme drawing of the present invention;

Figure 15 is the F-F section-drawing of Figure 14;

Figure 16 is a speed change shift sleeve structure scheme drawing of the present invention.

Shown in Fig. 1-16, three wheel lobes (5) of front and rear wheel of the present invention (1), (2) should be impartial, be 1/3rd circle segments, and the termination, junction of each adjacent arc wheel rim section (8) is provided with the tenon shape structure (17) that matches; Wheel rim section (8) two ends inside face respectively has a pair of silk hole (18), corresponding silk holes, two ends (18) are on same axis, respectively there is a hinge hole (19) at correspondingly a pair of arc spoke (10) two ends, the termination outer rim of this hinge hole is gear structure (20), the hinge hole (19) at two arc spoke (10) two ends is just hinged with the corresponding silk hole (18) at wheel rim section (8) two ends by bearing pin (21) separately, and the gear teeth of two spokes (10) two ends gear structures (20) mesh mutually, each should be consistent with the radian of wheel rim section (8) separately to the radian of spoke (10), so that folding anastomose property is best.Arc sealing tire section (9) can be inflatable structure, it seals inflatable inner tube (22) by arc and arc sealing cover tire (23) constitutes, the tractive muscle blade (24) that in the two ends of arc sealing inflatable inner tube (22) one section cross section to be arranged all be the lotus root shape, make the unlikely undue protrusion in termination of inflation back inflatable inner tube (22), the crochet of arc sealing cover tire (23) is positioned at the hook groove of corresponding wheel rim section (8), its wheel rim section (8) two ends outside face respectively has a shrinkage pool (25), what be provided with a band screw in the shrinkage pool presses piece (26), the through hole that countersunk head screw (27) passes on shrinkage pool (25) hole wall is threaded with pressing piece (26), will seal cover tire (23) termination, two ends and compress.Inner edge in each wheel rim section (8) is equipped with arc gusset (77), to increase its intensity.Arc sealing tire section (9) also can be non-pneumatic structure, and it is an one with wheel rim section (8) leak-tight joint also.Before the present invention, rear-wheel hub (6), (7) structure of doing to removably connect with the three pairs of arc spokes separately on all can be by wheel hub frame (28), top spring (29), jacking block (30), nip roll (31) and tighten ring (32) constitute, wheel hub frame (28) is two disc annular solids of " worker " font for the cross section, outer surface of cylinder of disc and rear-wheel hub (7) is an integral body under it, on it, be band-type brake groove (33) between the following pair of disc both sides, be used to place band-type brake structure (79), the carrying surface shallow slot (34) that both sides all have three well-distributeds and match with spoke (10) radian on the upper surface of wheel hub frame (28), before being used for placing, each three pairs of arc spoke (10) of trailing wheel, the center of corresponding each the carrying surface shallow slot (34) of the vertical solid part of " worker " font wheel hub frame (28) also has three well-distributed mouth end both sides all with the square deep hole (36) of step (35), the bottom of each deep hole (36) is placed with top spring (29) separately, top spring (29) upward is a jacking block (30) separately, the both sides step (35) of each deep hole (36) port is directed downwards along deep hole and has one section gap (37), equal horizontal positioned has nip roll (31) separately in each gap (37), tighten ring (32) evenly has the domatic annular ring of three road involute shapes for inside face, it inserts wheel hub frame (28) by restriction screw (38) and goes up in the upper surface center one circle limiting groove of disc, make the domatic nip roll (31) separately of pushing down of three involutes of tighten ring (32), and be connected for rotatable with wheel hub frame (28).Each middle part through hole to spoke (10) just is enclosed within the two ends of nip roll (31) separately, when tighten ring (32) tightens up rotation, each nip roll (31) overcomes the elastic force of top spring (29) and is depressed by the involute shape gradient degree of tighten ring (32), each nip roll (31) becomes the corresponding a pair of spoke of drive (10) and moves down along its gap (37), until each to the middle part outer arcuate face of spoke (10) with till the corresponding carrying surface shallow slot (34) on the corresponding wheel hub frame (28) is fitted, spoke (10) captive joint of just each being taken turns lobe (5) finishes, before, trailing wheel (1), (2) the tenon shape structure (17) between each three-wheel lobe (5) is adjacent is also coincide simultaneously and is linked together, so form integral body before, trailing wheel (1), (2).Folding rack (14) in the Foldable frame of the present invention (3), its front portion is one to have the rectangular block (39) of through hole, its middle part and rear portion are a vee-block (40), (41), they are an integral body, anterior rectangular block (39) is hinged by the both sides, front fork (11) upper end of bearing pin and front-wheel (1), its rear portion vee-block (41) lower end is connected with vertical shaft (42), vertical shaft (42) appearance fuses by ball and standpipe (15), vertical shaft (42) lower end is fixed with a lockplate (43) forward, be provided with latch structure between this lockplate (43) front portion and front fork (11) the top lintel (44), two inclined-plane inside faces of rear portion vee-block (41) respectively with the left side of collapsible handlebar (4), the lower end of right thill rod flexibly connects, the inside face on middle part vee-block (40) two inclined-planes of folding rack (14) is connected with the concentric ears piece (45) that has screw respectively, each is to being connected with a bayonet lock (46) and torsion spring (47) by bearing pin between the ears piece (45), the left side of handlebar (4), all there is a draw-in groove mouth right barre lower end, they respectively with separately be bayonet lock (46) clamping one.Car beam (13) in the Foldable frame (3) should be arc, its radian is slightly larger than the radian of trailing wheel (2) three-wheel lobe (5), respectively take turns lobe (5) can contain trailing wheel, correspondingly, the radian of front-wheel (1) three-wheel lobe (5) is slightly less than the radian of trailing wheel (2) three-wheel lobe (5), making front-wheel respectively take turns lobe can respectively be taken turns lobe by trailing wheel and contain, the rear end of this arc car beam (13) has extended upwardly and has been connected with vehicle seat (47), both sides, its rear portion and back vent (12) upper end are hinged, and the connection lintel between the upper end, back vent (12) both sides and snap close (48) clamping at Che Liang (13) rear portion are one.Treadle (49) in the lever gear system of the present invention has two, their front end is connected with foot-operated (50) separately, their rear end flexibly connects by hind axle (16) two ends of lining spindle nut (51) with trailing wheel (2), treadle (50) rear portion has long slot bore (52), and the transmission gear shift device just is arranged between this long slot bore (52) and the hind axle (16); The transmission gear shift device is by transmission gear shift bar (53), speed change sliding sleeve (54), change lever support (55) constitutes, transmission gear shift bar (53) has two, their front portions are straight-bar, it simultaneously has a bar shaped limiting groove (56), and this groove bottom has row's lock hole (57), transmission gear shift bar (53) rear portion is the semicircular ring body, its semi circular surface inner edge is gear structure (58), change lever support (55) also has two, hind axle (16) two ends of two stands middle part through hole and trailing wheel (2) flexibly connect, change lever support (55) front end through hole flexibly connects by the corresponding aperture at bearing pin and transmission gear shift bar (53) middle part, change lever support (55) front end is connected with an outside positive stop (59) downwards, and there is an outside backstop (60) its rear end.After change lever support (55) is installed on the hind axle (16), its backstop (60) is pushed down by the ratchet regulating block (78) of back vent (12) lower end, its positive stop (59) is positioned at the lower rear of treadle (49), the confinement block that swings up and down as treadle (49), regulate the height of ratchet regulating block (78), with regard to distance between scalable treadle (49) and the vehicle seat (47), ride with the people who adapts to different heights.Speed change sliding sleeve (54) in the transmission gear shift device of the present invention is by sleeve body (61), stop pin (62), spring (63), termination nut (64), shift fork crank throw (65) constitutes, its stop pin (62) is positioned at sleeve body (61), its inside end passes the corresponding lock hole (57) of the anterior straight-bar of transmission gear shift bar (53), its outer end is set with spring (63), termination nut (64) is connected sleeve body (61) outer end, its inner step compresses the spring (63) on the stop pin (62), and its centre hole slides for stop pin (62), stop pin (62) the inner is connected with shift fork crank throw (65) forward, the end holes of this shift fork crank throw (65) links to each other with the handle that undoes the lock on the handlebar (4) by the steel cable that undoes the lock, sleeve body (61) revolves linking to each other by traction steel rope of cable and the speed governing on the handlebar (4), sleeve body (61) outer end outer wall is connected in the long slot bore (52) at corresponding treadle () rear portion by bearing (66), transmission gear shift bar (53) front end is connected with pulley (67), spring rope (68) one ends are fixed in the lower end of transmission gear shift bar (53) rear portion semicircular ring body, and the other end is walked around the front end that pulley (67) is fixed in sleeve body (61).Driving gear set in the lever gear system of the present invention and ratchet are made of the corresponding component in two gyro-rotors (69) and hind axle (16) and rear-wheel hub (7) cylinder, two gyro-rotors (69) are movably arranged on the position that is positioned at rear-wheel hub (7) cylinder at hind axle (16) two ends, the outer end that two gyro-rotors (69) stretch out rear-wheel hub (7) cylinder is provided with the outer gear teeth (70), should outer gear teeth (70) be meshed with gear structure (58) on the semicircular ring body inner edge of cooresponding transmission gear shift bar (53) rear portion, the inner one circle of two gyro-rotors (69) is provided with conical gear (71), they with hind axle (16) central vertical in the wheel axial little vertical shaft (72) up and down the conical gear at two ends be meshed, on the middle part outer wall of two gyro-rotors (69), be equipped with ratchet (74) separately, position that should two ratchets (74) is provided with cooresponding ratchet (75) on rear-wheel hub (7) inner wall of rotary drum, their formation ratchet structures that is meshing with each other respectively, the bearing (76) of two gyro-rotors (69) by separately links to each other with rear-wheel hub (7) inner wall of rotary drum, makes whole rear-wheel hub (7) energy wraparound (69) forward rotation of turning.

During bicycle folding of the present invention, before first the general, rear-wheel hub (6), (7) tighten ring on (32) does to unclamp the rotation of direction, then the space between it and the wheel hub frame (28) increases gradually along the gradient of tighten ring (32) involute shape, then three nip rolls (31) in three deep holes (36) on the wheel hub frame (28) outwards eject under the effect of top spring (29) and jacking block (30) separately, front and back wheel (1) like this, (2) each three pairs of spoke (10) are just gone up respective carrier face shallow slot (34) from wheel hub frame (28) separately and are withdrawed from, outwards slightly switching spoke (10) is so that after the middle part through hole deviates from from corresponding nip roll (31) termination, can pull down this takes turns after lobe (5) all pulls down each lobe (5) successively, overturn that each makes them rotate around hinge-point separately and wheel rim section (8) to spoke (10) this moment again, until with till wheel rim section (8) overlaps separately.Each guarantees that to gear structure (20) of spoke (10) hinge-point termination spoke (10) is rotating and by nip roll (31) when being fixed, it is firmly symmetrical to spoke with this all the time that it takes turns lobe (5) plane of living in, thereby guarantee that front and back wheel (1), (2) firmly are in the center vertical plane position of wheel hub (6), (7) separately, have eliminated inclined to one side circle phenomenon.Each take turns lobe (5) take off folding after, earlier with the three-wheel lobe (5) of trailing wheel (2) the curved arc top (width of car beam can be suitable with the beam overall side by side of three-wheel lobe) at Che Liang (13) placed side by side, because the radian of front-wheel (1) three-wheel lobe (5) is less than the radian of trailing wheel (2) three-wheel lobe (5), then front-wheel three-wheel lobe (5) just can be placed on the trailing wheel three-wheel lobe (5), and six wheel lobes (5) and car beam (13) tied up or clasp joint is an one, be about to folding arrangement of wheel and finish, wheel is taken up space be minimum.Two treadles (49) with the lever gear system upwards rotate with both sides, back vent (12) upper end then, two treadles (49) front end and foot-operated (50) separately are for being rotatably connected, when then folding upwards overturn in two foot-operated (50) outer ends, to reduce the folding width of car load, the snap close (48) at car beam (13) rear portion is opened, then two treadles (49) close up to car beam (13) below together with back vent (12) again.Pull two bayonet locks (46) in folding rack (14) the middle part vee-block (40) in the folding stand (3), make Foldable handlebar (4) vertical handgrip lower end, the left and right sides draw-in groove mouth and bayonet lock (46) is thrown off separately, then they rotate to the back lower place along the inclined-plane separately of rear portion vee-block (41), and they are adducted together.Open lockplate (43) front portion of folding rack (14) bottom and the latch structure between front fork (11) the top lintel (44) again, just the hinge-point of front fork (11) around itself and folding rack (14) upper end can be gone to car beam (13) top, and be close together with two vertical handgrips, one be located on fold six take turns lobe (5) top, car load is just folding to finish.

Anti-process by said process just can install car load at an easy rate, when riding, on bipod replaces, under pedal and step on foot-operated (50), then two treadles (49) alternately swing up and down, swinging up and down by sliding sleeve bearing (66) drive transmission gear shift bar (53) of treadle (49) swings up and down, the gear teeth (70) that gear structure (58) on the semi circular surface inner edge of transmission gear shift bar (53) rear end just drives last gyro-rotor (69) outer end of hind axle (16) come back rotation, when gyro-rotor (69) when coming back rotation, the ratchet (74) at its middle part is just constantly stirred the ratchet (75) in rear-wheel hub (7) cylinder forward, makes the unidirectional rotation forward of trailing wheel (2).Simultaneously the inner conical gear (71) of two gyro-rotors (69) again with the little vertical shaft in hind axle (16) center (72) on a pair of conical gear (73) engagement rotate, to guarantee a side treadle (49) opposite side treadle (49) upward movement when moving downward.

During bicycle speed-regulating of the present invention, pull the handle that undoes the lock on the left handlebar earlier, by the steel cable pulling shift fork crank throw (65) that undoes the lock, shift fork crank throw (65) is just stirred stop pin (62) compression spring (63) and is outwards moved, make the corresponding lock hole (57) on the anterior straight-bar of stop pin (62) inner termination disengagement transmission gear shift bar (53), make sleeve body (61) be in removable state, this moment, handle was revolved in the speed governing on the right handlebar of turn again, it makes sleeve body (61) go up at transmission gear shift bar (53) by traction steel rope of cable and spring rope (68) and pulley (67) and slides, when transferring to suitable lock hole (57), unclamp the handle that undoes the lock again, just make stop pin (62) under spring (63) effect, enter required lock hole (57), promptly finish the speed governing operation.Generally transferring lock hole (57) forward is that reduction of speed is regulated, and is that speedup is regulated backward.Above-mentioned speed regulation process also can be finished in the process of riding easily.

Claims

1, a kind of full-foldable bicycle, it is mainly by before collapsible, trailing wheel (1), (2), Foldable frame (3) and handlebar (4) and lever gear system are formed, wherein, Foldable frame (3) is by front fork (11), back vent (12), car beam (13) and folding rack (14) constitute, folding rack (14) flexibly connects with front fork (11) upper end, front wheel spindle in front fork (11) lower end and the front wheel hub (6) links to each other, folding rack (14) links to each other with car beam (13) front end by standpipe (15), the upper end of car beam (13) rear portion and back vent (12) flexibly connects, folding rack (14) upwards activity is connected with collapsible handlebar (4), be connected with by treadle on the hind axle (16) in the rear-wheel hub, the lever gear system that ratchet and driving gear set and transmission gear shift device are formed, it is characterized in that collapsible before, trailing wheel (1), (2) structure is identical, they are by three arc wheel lobes (5) and preceding, rear-wheel hub (6), (7) constitute, wherein taking turns lobe (5) is made up of arc wheel rim section (8) and arc sealing tire section (9) thereof, each two ends of taking turns lobe circle section (8) all is connected with a pair of arc spoke (10), each to the middle part of spoke (10) with corresponding before, rear-wheel hub (6), (7) removably connect, before making, back each three wheels lobe (5) fits tightly to before the one formation, trailing wheel (1), (2).

2, by the described full-foldable bicycle of claim 1, three the wheel lobes (5) that it is characterized in that front and rear wheel (1), (2) should be impartial, be 1/3rd circle segments, and the termination, junction of each adjacent arc wheel rim section (8) is provided with the tenon shape structure (17) that matches; Wheel rim section (8) two ends inside face respectively has a pair of silk hole (18), corresponding silk holes, two ends (18) are on same axis, respectively there is a hinge hole (19) at correspondingly a pair of arc spoke (10) two ends, the termination outer rim of this hinge hole is gear structure (20), the hinge hole (19) at two arc spoke (10) two ends is just hinged with the corresponding silk hole (18) at wheel rim section (8) two ends by bearing pin (21) separately, and the gear teeth of two spokes (10) two ends gear structures (20) mesh mutually, and each should be consistent with the radian of wheel rim section (8) separately to the radian of spoke (10); Arc sealing tire section (9) can be inflatable structure, it seals inflatable inner tube (22) by arc and arc sealing cover tire (23) constitutes, the tractive muscle blade (24) that in the two ends of arc sealing inflatable inner tube (22) one section cross section to be arranged all be the lotus root shape, make the unlikely undue protrusion in termination of inflation back inflatable inner tube (22), the crochet of arc sealing cover tire (23) is positioned at the hook groove of corresponding wheel rim section (8), its wheel rim section (8) two ends outside face respectively has a shrinkage pool (25), what be provided with a band screw in the shrinkage pool presses piece (26), the through hole that countersunk head screw (27) passes on shrinkage pool (25) hole wall is threaded with pressing piece (26), will seal cover tire (23) termination, two ends and compress.

3, by the described full-foldable bicycle of claim 1, before it is characterized in that, rear-wheel hub (6), (7) structure of doing to removably connect with the three pairs of arc spokes separately on all can be by wheel hub frame (28), top spring (29), jacking block (30), nip roll (31) and tighten ring (32) constitute, wheel hub frame (28) is two disc annular solids of " worker " font for the cross section, outer surface of cylinder of disc and rear-wheel hub (7) is an integral body under it, on it, be band-type brake groove (33) between the following pair of disc both sides, be used to place band-type brake structure (79), the carrying surface shallow slot (34) that both sides all have three well-distributeds and match with spoke (10) radian on the upper surface of wheel hub frame (28), before being used for placing, each three pairs of arc spoke (10) of trailing wheel, the center of corresponding each the carrying surface shallow slot (34) of the vertical solid part of " worker " font wheel hub frame (28) also has three well-distributed mouth end both sides all with the square deep hole (36) of step (35), the bottom of each deep hole (36) is placed with top spring (29) separately, top spring (29) upward is a jacking block (30) separately, the both sides step (35) of each deep hole (36) port is directed downwards along deep hole and has one section slit (37), equal horizontal positioned has nip roll (31) separately in each gap (37), tighten ring (32) evenly has the domatic annular ring of three road involute shapes for inside face, it inserts wheel hub frame (28) by restriction screw (38) and goes up in the upper surface center one circle limiting groove of disc, make the domatic nip roll (31) separately of pushing down of three involutes of tighten ring (32), and be connected for rotatable with wheel hub frame (28).

4, by the described full-foldable bicycle of claim 1, it is characterized in that the folding rack (14) in the Foldable frame (3), its front portion is one to have the rectangular block (39) of through hole, its middle part and rear portion are a vee-block (40), (41), they are an integral body, anterior rectangular block (39) is hinged by the both sides, front fork (11) upper end of bearing pin and front-wheel (1), its rear portion vee-block (41) lower end is connected with vertical shaft (42), vertical shaft (42) appearance fuses by ball and standpipe (15), vertical shaft (42) lower end is fixed with a lockplate (43) forward, be provided with latch structure between this lockplate (43) front portion and front fork (11) the top lintel (44), two inclined-plane inside faces of rear portion vee-block (41) respectively with the left side of collapsible handlebar (4), the lower end of right thill rod flexibly connects, the inside face on middle part vee-block (40) two inclined-planes of folding rack (14) is connected with the concentric ears piece (45) that has screw respectively, each is to being connected with a bayonet lock (46) and torsion spring (47) by bearing pin between the ears piece (45), the left side of handlebar (4), all there is a draw-in groove mouth right barre lower end, they respectively with separately be bayonet lock (46) clamping one.

5, by the described full-foldable bicycle of claim 1, it is characterized in that the car beam (13) in the Foldable frame (3) should be arc, its radian is slightly larger than the radian of trailing wheel (2) three-wheel lobe (5), respectively take turns lobe (5) can contain trailing wheel, correspondingly, the radian of front-wheel (1) three-wheel lobe (5) is slightly less than the radian of trailing wheel (2) three-wheel lobe (5), making front-wheel respectively take turns lobe can respectively be taken turns lobe by trailing wheel and contain, the rear end of this arc car beam (13) has extended upwardly and has been connected with vehicle seat (47), both sides, its rear portion and back vent (12) upper end are hinged, and the connection lintel between the upper end, back vent (12) both sides and snap close (48) clamping at Che Liang (13) rear portion are one.

6, by the described full-foldable bicycle of claim 1, it is characterized in that the treadle (49) in the described lever gear system has two, their front end is connected with foot-operated (50) separately, their rear end flexibly connects by hind axle (16) two ends of lining spindle nut (51) with trailing wheel (2), treadle (50) rear portion has long slot bore (52), and the transmission gear shift device just is arranged between this long slot bore (52) and the hind axle (16); The transmission gear shift device is by transmission gear shift bar (53), speed change sliding sleeve (54), change lever support (55) constitutes, transmission gear shift bar (53) has two, their front portions are straight-bar, it simultaneously has a bar shaped limiting groove (56), and this groove bottom has row's lock hole (57), transmission gear shift bar (53) rear portion is the semicircular ring body, its semi circular surface inner edge is gear structure (58), change lever support (55) also has two, hind axle (16) two ends of two stands middle part through hole and trailing wheel (2) flexibly connect, change lever support (55) front end through hole flexibly connects by the corresponding aperture at bearing pin and transmission gear shift bar (53) middle part, change lever support (55) front end is connected with an outside positive stop (59) downwards, and there is an outside backstop (60) its rear end.

7, by the described full-foldable bicycle of claim 6, it is characterized in that described speed change sliding sleeve (54) is by sleeve body (61), stop pin (62), spring (63), termination nut (64), shift fork crank throw (65) constitutes, its stop pin (62) is positioned at sleeve body (61), its inside end passes the corresponding lock hole (57) of the anterior straight-bar of transmission gear shift bar (53), its outer end is set with spring (63), termination nut (64) is connected sleeve body (61) outer end, its inner step compresses the spring (63) on the stop pin (62), and its centre hole slides for stop pin (62), stop pin (62) the inner is connected with shift fork crank throw (65) forward, the end holes of this shift fork crank throw (65) links to each other with the handle that undoes the lock on the handlebar (4) by the steel cable that undoes the lock, sleeve body (61) revolves linking to each other by traction steel rope of cable and the speed governing on the handlebar (4), sleeve body (61) outer end outer wall is connected in the long slot bore (52) at corresponding treadle (49) rear portion by bearing (66), transmission gear shift bar (53) front end is connected with pulley (67), spring rope (68) one ends are fixed in the lower end of transmission gear shift bar (53) rear portion semicircular ring body, and the other end is walked around the front end that pulley (67) is fixed in sleeve body (61).

8, by the described full-foldable bicycle of claim 1, it is characterized in that driving gear set and ratchet in the described lever gear system are made of the corresponding component in two gyro-rotors (69) and hind axle (16) and rear-wheel hub (7) cylinder, two gyro-rotors (69) are movably arranged on the position that is positioned at rear-wheel hub (7) cylinder at hind axle (16) two ends, the outer end that two gyro-rotors (69) stretch out rear-wheel hub (7) cylinder is provided with the outer gear teeth (70), should outer gear teeth (70) be meshed with gear structure (58) on the semicircular ring body inner edge of cooresponding transmission gear shift bar (53) rear portion, the inner one circle of two gyro-rotors (69) is provided with conical gear (71), they with hind axle (16) central vertical in the wheel axial little vertical shaft (72) up and down the conical gear at two ends be meshed, on the middle part outer wall of two gyro-rotors (69), be equipped with ratchet (74) separately, position that should two ratchets (74) is provided with cooresponding ratchet (75) on rear-wheel hub (7) inner wall of rotary drum, their formation ratchet structures that is meshing with each other respectively, the bearing (76) of two gyro-rotors (69) by separately links to each other with rear-wheel hub (7) inner wall of rotary drum, makes whole rear-wheel hub (7) energy wraparound (69) forward rotation of turning.