CN1039397C - Miniature hand-driving front wheel foldable bicycle - Google Patents

Abstract

The present invention relates to a miniature dismountable and foldable bicycle with a hand-driving front wheel, which is composed of a bicycle frame, a front fork, pedals, a saddle, a front wheel, a back wheel, a driving mechanism, a braking safety device, a back coat-hanger, a bicycle ladder, a folding device and a trailer. The miniature dismountable and foldable bicycle with a hand-driven front wheel has the advantages of compact structure, adoption of a hand-swung front wheel of a synchronous cog-shaped belt for drive, whole bicycle length of not more than 1 meter except the trailer part, bicycle weight of below 9 kilograms, smaller and handy form and the distance of not larger than 0.4 meters from the saddle to the ground. Thus, the center of gravity is lower, the miniature dismountable and foldable bicycle with a hand-driving front wheel is ridden and sat stably, comfortably and safely and the range of practicality is wider. Various defects of 28' bicycles and 26' bicycles are overcome, and a bicycle speed can completely achieve the levels of 28' bicycles and 26' bicycles. Most parts of the whole bicycle can be dismounted and folded, and the trailer can be changed into a suitcase so that the whole bicycle is arranged into the case. The present invention is carried and stored particularly conveniently in tours.

Description

Miniature hand-drive front-wheel folding bicycle

The present invention relates to a kind of Frontwheel driven bicycle, especially miniature hand-drive front-wheel folding bicycle.

At present, bicycle generally adopts the rear drive of chain type pedal, its build is bigger, it is bigger to walk, park floor area, also heavy, the greasy dirt of chain, get rusty, fall chain makes troubles to the people and inconvenience, saddle is also not too comfortable, Chinese patent specification sheets CN87105831A discloses a kind of by seat, vehicle frame, driving device, steering hardware and the Frontwheel driven bicycle that has at least two wheels to constitute, it has collapsible backrest seat, foldable chassis, adopt the driving device of crank reciprocally swinging, controlled the steering hardware that turns to by joystick.This car solved drive comfortable, carry and storage makes things convenient for subproblem, but do not throw off linked transmission yet, the drawback that chain brings is not resolved, joystick is located at seat inconvenient safety on one side up and down, length of connecting rod and door assembly with hinge and glass in right hand and left, and rigidity is relatively poor, be used for handling and turn to, be difficult to exactly controlling party to, the driving device of crank reciprocally swinging can make the speed of a motor vehicle obviously reduce, practical value is low, transmission gearbox complex structure and heaviness, and so heavy driving device is placed on the front end of front-wheel, adds the motion that both feet do not stop, stability, balance is poor, too much transmission contact, it is very heavy that car is pedaled.

The objective of the invention is to avoid above-mentioned weak point of the prior art and a kind of compact conformation is provided, build is less light, and the saddle center of gravity is lower, and is comfortable safe and reliable, driving device uses hand-drive without pedal, need not lubricate, clean laborsavingly, safeguard simple, and can fold rapidly, it is easy to carry to travel, practical face broad, and the miniature hand-drive front-wheel folding bicycle of ", 26 " the type car speed of a motor vehicle that has 28.

Purpose of the present invention can reach by following measure; It comprises that its constructional feature is by the two sections vehicle frames formed in front and back, front fork, foot-operated, saddle, front-wheel, trailing wheel, driving device, braking safety device, back clothes hanger, car ladder, folding device, trailer this bicycle:

Vehicle frame is the double track framework type, and leading portion includes preceding cant beam, preceding pipe, flat pipe, connection pipe, two preceding cant beams and connection pipe formation triangle-frame, and the triangle-frame top is connected with preceding pipe, and the termination of two preceding cant beams becomes the obtuse angle to be connected with two flat pipes respectively; Back segment includes two-tube chain stay, two-tube back cant beam, two-tube upright fork, two connecting panels, two-tube chain stay upper forepart is provided with two pairs of auricles, on the two-tube chain stay of auricle back, become the obtuse angle to be connected with two-tube back cant beam, acutangulate at the termination rear lower of the other end of two-tube back cant beam and to be connected with two-tube upright fork, by two connecting panels two-tube upright fork is acutangulated links to each other with two-tube chain stay, constitute two triangle-frames, between two-tube back cant beam and two-tube chain stay, all be connected with connection pipe, two connecting panels are enclosed within on the two ends, the hind axle left and right sides also fixing respectively, on the two-tube chain stay of cant beam back, two-tube back, be provided with a pair of gusset plate, be connected with mudwing on the gusset plate, and be connected and fixed by pipe link and hind axle; Two sections two flat Guan Bingyong fly nuts that are front end by the two-tube chain stay of back segment inserts or extract leading portion are screwed on or are screwed down and realize connecting or folding before and after the vehicle frame;

Front fork includes standpipe, side pipe, transverse tube, connecting panel, standpipe inserts in the preceding pipe of vehicle frame leading portion, standpipe is connected with the transverse tube middle part, below, transverse tube middle part is provided with gusset plate, be connected with mudwing on the gusset plate, and be connected to a fixed by pipe link front-wheel wheel shaft, the transverse tube two ends is provided with blanking cover, bottom, transverse tube two ends becomes the obtuse angle to be connected with two lateral canals respectively, and two lateral canals become the obtuse angle to link to each other with two connecting panels respectively, and two connecting panels are fixed on the two ends, the front-wheel wheel shaft left and right sides, be provided with retaining up and down at preceding pipe place, last lower shaft bowl, be provided with lamp yoke above the last retaining, lamp yoke is provided with acorn nut, is provided with ball in the last lower shaft bowl;

Ride and about the front-wheel front lower place, respectively establish one, it includes support arm, pedal spindle, stretcher, rubber pedal, restraint bolt, support arm one end and front wheel spindle are spirally connected, pedal spindle is located at the end of the support arm other end, pedal spindle is provided with stretcher, and stretcher is provided with the rubber pedal, and stretcher, rubber pedal, pedal spindle can be to the front-wheel folded inside, one end of support arm is provided with the restraint bolt and is fixed on the front fork connecting panel, can not rotate arbitrarily when making it be subjected to riding power;

Saddle is made up of seat basin, seat cushion, and a seat basin is located on two pairs of auricles of two-tube chain stay, and connects or pull down with fly nut, and a seat basin is provided with seat cushion;

Front-wheel is 16 " drive wheel, trailing wheel are 14 " takes turns, and is provided with the overstriking spoke on front and back wheel;

Driving device is the hand-drive front-wheel, it includes two-tube hound, the two-tube axle pillar of going up, last axle, the Upper shaft sleeve pipe, handle, synchronous cog belt, big profile of tooth belt wheel, small flywheel, left and right sides tape drum, two-tube hound one end acutangulates respectively with top, front fork transverse tube two ends and links to each other, the other end links to each other respectively by bolt with a pair of auricle that Upper shaft sleeve pipe bottom is provided with, auricle is provided with slotted hole, the upper-lower position of axle on the scalable, be in optimum regime forever with the elasticity that guarantees cog belt, two-tube upward axle pillar one end is provided with a pair of auricle with Upper shaft sleeve pipe bottom and links to each other respectively by bolt, the other end is enclosed within two ends, the front wheel spindle left and right sides and fixing respectively, the Upper shaft sleeve pipe is bearing in by two-tube hound by a pair of auricle of its underpart, the two-tube axle pillar of going up, on the double track spider that the front fork side pipe is formed, be provided with axle in the Upper shaft sleeve pipe, be respectively equipped with the axle bowl about last axle, ball; Respectively establish one about handle, it includes crank, Handle axis, taper knob, axle bumper, the axle bowl, ball, acorn nut, two cranks, one end respectively with two ends, the left and right sides loose joint of last axle, can take off when folding, the two crank other ends link to each other with right-hand man's arbor, two Handle axis are respectively taper knob outward, be respectively equipped with the axle bowl between Handle axis and taper knob, ball, axle bumper, axle bumper is provided with acorn nut outward, about going up, last axle is provided with big profile of tooth belt wheel between two handles, big profile of tooth belt wheel is provided with synchronous cog belt, and synchronous cog belt is back to big profile of tooth belt wheel by the small flywheel that is located on the front wheel spindle, and closed in itself; Small flywheel includes little profile of tooth belt wheel, ratchet, ratchet, ratchet shell, silk retaining, ball, little profile of tooth belt wheel left side is provided with ratchet, the ratchet both sides are provided with ball, silk retaining, be provided with ratchet in the ratchet, be provided with the ratchet shell in the ratchet, synchronous cog belt, big profile of tooth belt wheel, small flywheel are enclosed in the two halves tape drum of the left and right sides;

Braking safety device includes pincerlike lock, cable wire, brake lever, bicycle bell, brake lever, bicycle bell be contained in respectively cant beam before the vehicle frame about on the pipe, pincerlike lock is fixed on the connecting panel between the two-tube upright fork of trailing wheel oblique upper;

Back clothes hanger includes compressing member, torsion spring, support, and the connection pipe between support and two-tube back cant beam is provided with a pair of auricle and is connected to a fixed, and the bottom is fixed on the connecting panel of two-tube chain stay rear end, and the support rear portion is provided with tail lamp bracket;

The car ladder includes spring, rocking arm, pillar, clip, and on the chain stay left side pipe after with clip the car ladder being fixed between cant beam and the trailing wheel, car ladder front and back position and pillar leaning angle can be regulated arbitrarily;

Trailer is a portable case type, it includes casing, case lid, handle, attaching parts, draw bar, fly nut, hinge, little travelling wheel, big travelling wheel, the triangle reinforced rib, casing is provided with two fan case lids, the middle part is provided with a little travelling wheel at the bottom of the casing, the rear portion is provided with two big travelling wheels, the two sides of casing and case lid are connected through the hinge, the front and rear wall of casing was connected with case lid by attaching parts when two fan case lids were opened, constitute the trailer of band enclosure wall, on the top of casing left and right sides 3 triangle reinforced ribs are arranged respectively, two fan case lids after supporting is opened, middle parts in each side of the closed place of two fan case lids are provided with handle, and the front portion of casing is arranged with two draw bars, and two draw bars are connected with fly nut with hind axle or pull down, after closing, two fan case lids synthesize suitcase, car body after folding for dress and zero annex.

Purpose of the present invention can also reach by following measure: the line of centres of car front-wheel, trailing wheel, two-tube chain stay when parking state becomes 2 ° of 21 ' angles with horizon; The overstriking spoke that front-wheel, trailing wheel are provided with is No. 12 spokes, and the spoke number respectively is 24; Full vehicle commander is not more than 1 meter, and overall height is not more than 0.7 meter, widely is not more than 0.4 meter, and saddle is not more than 0.4 meter apart from ground, and car weight is below 9 kilograms; Ride about under the front wheel spindle and respectively establish one, use instead when supplying children by bike; The transmitting ratio of big profile of tooth belt wheel and little profile of tooth belt wheel is 56: 12.

The present invention has following advantage compared to existing technology:

1, its compact conformation, build is less light, and it is less to walk, park floor area, removes the full vehicle commander of trailer part and is no more than 1 meter, widely is not more than 0.4 meter, is higher than 0.7 meter, and car weight is then below 9 kilograms, and the speed of a motor vehicle fully can be with 28 " bicycle compares favourably.

2, to change chain type pedal back-wheel drive be the hand f-w-d of synchronous cog belt to driving device, guaranteed the accurate, steady, quick of transmission, and need not lubricate, cleaning is clean, has reduced maintenance, and is brisk laborsaving, hand-drive simultaneously all has fitness and body-building effect preferably to the vital organs of the human body and waist upper limbs, handle affairs by bike and carried out again taking exercise and to have killed two birds with one stone, be more convenient for adhering to, play the effect that is of illnesses and fitness.

3, saddle is a seat basin sofa-type, be located on the two-tube chain stay, thereby center of gravity is lower, rides and sits steady comfortable safety, and practical face is wider, and not only the young people is suitable for, and particularly children, the elderly are more suitable, and some disease patient is also applicable for lower limb.

4, this car is small and exquisite nimble, when not using trailer on ordinary days or under the living conditions condition of limited, and during out on tours, in the suitcase that the folding trailer of packing into of whole car can be become, deposits that to carry tourism convenient especially.

5, this car is easy to make, and cost is low, and saving in material, materials are about 28 " about 1/3 of car, good in economic efficiency, the social benefit height.

Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail:

Fig. 1 is miniature hand-drive front-wheel folding bicycle front view;

Fig. 2 is a vehicle frame front view shown in Figure 1;

Fig. 3 is a vehicle frame birds-eye view shown in Figure 1;

Fig. 4 is a front fork front view shown in Figure 1;

Fig. 5 is a front fork lateral plan shown in Figure 1;

Fig. 6 is preceding pipe shown in Figure 1 and standpipe structural representation;

Fig. 7 is a transmission structures scheme drawing shown in Figure 1;

Fig. 8 is the small flywheel constructional drawing among Fig. 7;

Fig. 9 is the synchronous cog belt constructional drawing among Fig. 7;

Figure 10 is a trailer front view shown in Figure 1;

Figure 11 is a trailer lateral plan shown in Figure 1;

As Fig. 1, Figure 10, shown in Figure 11, it comprises bicycle of the present invention by the two sections vehicle frames formed 1 in front and back, front fork 2, foot-operated 3, saddle 4, front-wheel 5, trailing wheel 6, driving device 7, braking safety device 8, back clothes hanger 9, car ladder 10, folding device 11, trailer 12, full vehicle commander is not more than 1 meter, widely be not more than 0.4 meter, saddle is not more than 0.4 meter apart from ground, car weight is below 9 kilograms;

As Fig. 1, Fig. 2, shown in Figure 3, vehicle frame 1 usefulness metallic material is made for the double track framework type, leading portion includes preceding cant beam 13, preceding pipe 14, flat pipe 15, connection pipe 16, two preceding cant beams 13 constitute triangle-frame with connection pipe 16, the triangle-frame top is connected with preceding pipe 14, and the termination of two preceding cant beams 13 becomes the obtuse angle to be connected with two flat pipes 15 respectively; Back segment includes two-tube chain stay 17, two-tube back cant beam 18, two-tube upright fork 19, two connecting panels 20, two-tube chain stay 17 upper foreparts are provided with two pairs of auricles 21, on the two-tube chain stay 17 of auricle 21 back, become the obtuse angle to be connected with two-tube back cant beam 18, acutangulate at the termination rear lower of the other end of two-tube back cant beam 18 and to be connected with two-tube upright fork 19, by two connecting panels 20 two-tube upright fork 19 is acutangulated links to each other with two-tube chain stay 17, constitute two triangle-frames, at two-tube back cant beam 18, all be connected with connection pipe 22 between the two-tube chain stay 17, two connecting panels 20 are enclosed within on the two ends, hind axle 90 left and right sides also fixing respectively, on the two-tube chain stay 17 of cant beam 18 back, two-tube back, be provided with a pair of gusset plate 87, be connected with mudwing 88 on the gusset plate 87, and be connected and fixed by pipe link 89 and hind axle 90, two sections of vehicle frame 1 front and back are two flat pipes 15 that insert or extract leading portion by the front end of the two-tube chain stay 17 of back segment, and screw on or screw down with fly nut 23 and realize connecting or folding;

As Fig. 1, Fig. 4, Fig. 5, shown in Figure 6, front fork 2 usefulness metallic materials are made, it includes standpipe 24, side pipe 25, transverse tube 26, connecting panel 27, standpipe 24 inserts in the preceding pipe 14 of vehicle frame 1 leading portion, standpipe 24 be connected above transverse tube 26 middle parts, below, transverse tube 26 middle parts is provided with gusset plate 28, be connected with mudwing 29 on the gusset plate 28, and be connected and fixed by pipe link 30 and front wheel spindle 32, transverse tube 26 two ends are provided with blanking cover 31, bottom, transverse tube 26 two ends becomes the obtuse angle to be connected with two lateral canals, 25, two lateral canals 25 respectively to become the obtuse angle to link to each other with two connecting panels 27 respectively, and two connecting panels 27 are fixed on the two ends, front wheel spindle 32 left and right sides, be provided with at preceding pipe 14 places and keep off 33 up and down, last lower shaft bowl 34, be provided with lamp yoke 35 above the last retaining 33, lamp yoke 35 is provided with acorn nut 36, is provided with ball 37 in the bowl 34 up and down;

As shown in Figure 1, foot-operated 3 respectively establish one about front-wheel 5 front lower places, children are convenient by bike to be suitable in order to make, being equipped with in addition one secondary short foot-operated 3 locates about being located under the front wheel spindle 32, use instead in use, it includes support arm 38, pedal spindle 39, stretcher 40, rubber pedal 41, restraint bolt 42, support arm 38 1 ends and front wheel spindle 32 are spirally connected, pedal spindle 39 is located at the end of support arm 38 other ends, pedal spindle 39 is provided with stretcher 40, stretcher 40 is provided with rubber pedal 41, stretcher 40, rubber pedal 41, pedal spindle 39 can be to front-wheel 5 folded inside, one end of support arm 38 is provided with restraint bolt 42 and is fixed on the front fork connecting panel 27, and it can not be rotated arbitrarily when being subjected to riding power;

Saddle 4 is made up of seat basin 43, seat cushion 44, and seat basin 43 usefulness glass-felt plastics are made, and it is located on 17 two pairs of auricles 21 of two-tube chain stay, and connects or pull down with fly nut 45, and a basin 43 is provided with sofa-type seat cushion 44, and seat cushion 44 usefulness foamed plastic are made;

Front-wheel 5 is 16 " drive wheel; trailing wheel 6 is 14 " takes turns, and be provided with overstriking spoke 46, the wheel hub of front-wheel 5 trailing wheels 6, spoke 46 usefulness metallic materials are made, overstriking spoke 46 is No. 12 spokes, the spoke number respectively is 24, and the line of centres of front-wheel 5 trailing wheels 6, the line of centers of two-tube chain stay 17 become 2 ° of 21 ' angles with horizon;

As Fig. 1, Fig. 7, Fig. 8, shown in Figure 9, driving device 7 is the hand-drive front-wheel, it includes two-tube hound 47, the two-tube axle pillar 48 of going up, last axle 49, Upper shaft sleeve pipe 50, handle 51, synchronous cog belt 52, big profile of tooth belt wheel 53, small flywheel 54, left and right sides tape drum 55, two-tube hound 47, the two-tube axle pillar 48 of going up, last axle 49, Upper shaft sleeve pipe 50, handle 51 usefulness metallic materials are made, two-tube hound 47 1 ends acutangulate respectively with top, front fork transverse tube 26 two ends and link to each other, a pair of auricle that the other end and Upper shaft sleeve pipe 50 bottoms are provided with 56 links to each other respectively by bolt, auricle 56 is provided with slotted hole 57, the upper-lower position of axle 49 on the scalable, be in optimum regime forever with the elasticity that guarantees synchronous cog belt 52, the two-tube a pair of auricle that axle pillar 48 1 ends and Upper shaft sleeve pipe 50 bottoms are provided with 56 gone up links to each other respectively by bolt, the other end is enclosed within two ends, front wheel spindle 32 left and right sides and fixing respectively, Upper shaft sleeve pipe 50 is bearing in by two-tube hound 47 by a pair of auricle 56 of its underpart, the two-tube axle pillar 48 of going up, on the double track spider that front fork side pipe 25 is formed, be provided with axle 49 in the Upper shaft sleeve pipe 50, last axle about 49 is respectively equipped with axle bowl 58, ball 59; Handle about 51 is respectively established one, it includes crank 60, Handle axis 61, taper knob 62, axle bumper 63, axle bowl 64, ball 65, acorn nut 66, two cranks, 60 1 ends are spirally connected or pin joint with last axle two ends, 49 left and right sides respectively, can take off when folding, two cranks, 60 other ends link to each other with right-hand man's arbor 61, two Handle axis, the 61 outer taper knobs 62 that are respectively, 62 of Handle axis 61 and taper knobs are respectively equipped with axle bowl 58, ball 65, axle bumper 63, the axle bumper 63 outer acorn nuts 66 that are provided with, be provided with the big profile of tooth belt wheel 53 that Reinforced Nylon is made between two handles 51 about on the last axle 49, big profile of tooth belt wheel 53 is provided with the synchronous cog belt made from polyurethane 52, synchronous cog belt 52 is back to big profile of tooth belt wheel 53 by the small flywheel 54 that is located on the front wheel spindle 32, and closed in itself, big profile of tooth belt wheel 53 is 56: 12 with the transmitting ratio of little profile of tooth belt wheel 67; Small flywheel 54 includes little profile of tooth belt wheel 67, ratchet 68, ratchet 69, ratchet shell 70, silk retaining 71, ball 72, little profile of tooth belt wheel 67 left sides made from Reinforced Nylon are provided with ratchet 68, ratchet 68 both sides are provided with ball 72, silk retaining 71, be provided with ratchet 69 in the ratchet 68, be provided with ratchet shell 70 in the ratchet 69, synchronous cog belt 52, big profile of tooth belt wheel 53, small flywheel 54 are enclosed in the left and right sides two halves tape drum 55;

As Fig. 1, Fig. 2, shown in Figure 3, braking safety device 8 usefulness metallic materials are made, it includes pincerlike lock 73, cable wire 74, brake lever 75, bicycle bell 76, brake lever 75, bicycle bell 76 be contained in respectively cant beam 13 before the vehicle frame about on the pipe, pincerlike lock 73 is fixed on 19 connecting panels 77 of two-tube upright fork of trailing wheel 6 oblique uppers;

As Fig. 1, Fig. 2, shown in Figure 3, back clothes hanger 9 usefulness metallic materials are made, it includes compressing member 78, torsion spring 79, support 80, the connection pipe 22 that support 80 and two-tube back cant beam are 18 is provided with a pair of auricle 81 and is connected to a fixed, the bottom is fixed on the connecting panel 20 of two-tube chain stay 17 rear ends, and the rear portion of support 80 is provided with tail lamp bracket 82;

As Fig. 1, Fig. 2, shown in Figure 3, car ladder 10 usefulness metallic materials are made, it includes spring 83, rocking arm 84, pillar 85, clip 86, with clip 86 car ladder 10 is fixed on the two-tube chain stay 17 left pipes between back cant beam 18 and the trailing wheel 6, terraced 10 front and back positions of car and pillar 85 leaning angles can be regulated arbitrarily;

As Fig. 1, Figure 10, shown in Figure 11, trailer 12 is a portable case type, made of plastic, it includes casing 91, case lid 92, handle 93, attaching parts 94, draw bar 95, fly nut 96, hinge 97, little travelling wheel 98, big travelling wheel 99, triangle reinforced rib 100, casing 91 is provided with two fan case lids 92, middle part, 91 ends of casing is provided with a little travelling wheel 98, the rear portion is provided with two big travelling wheels 99, casing 91 is connected by hinge 97 with the two sides of case lid 92, the front and rear wall of casing 91 was connected with case lid 92 by attaching parts 94 when two fan case lids 92 were opened, constitute the trailer of band enclosure wall, on the top of casing 91 left and right sides 3 triangle reinforced ribs 100 are arranged respectively, two fan case lids 92 after supporting is opened, middle parts in each side of the closed place of two fan case lids 92 are provided with handle 93, and the front portion of casing 91 is arranged with 95, two draw bars 95 of two draw bars and is connected with hind axle 90 usefulness fly nuts 96 or pulls down, become suitcase after two fan case lids, 92 closures, car body after folding for dress and zero annex thereof.

This car use with 28 ", 26 " car difference be change into pedal hand, left foot is pedaled left foot pedal 40 forward and can be handled car and turn round to the right when car need turn round, can handle car when right crus of diaphragm is pedaled right steps 40 forward and turn round left, but two hands are also turned about bar handle 51 realizations simultaneously.When trailer 12 does not use on ordinary days, backing out fly nut 96 can pull down the draw bar 95 of trailer 12 from hind axle 90, the draw bar 95 of trailer 12 can be loaded onto in the time of maybe must using as out on tours and be inserted in hind axle 90 fly nut 96 of screwing on and get final product, carry or the family room condition has in limited time at needs, car trailer 12, vehicle frame 1 front and back section, handle 51, saddle 4 can be pulled down, stretcher 40 gets final product in the front-wheel folded inside is packed the suitcase that trailer 12 becomes into.When children ride when sitting need only be with secondary foot-operated 3 unloading of being located at front-wheel 5 front lower places, each one gets final product about changing a secondary standby weak point foot-operated 3 and being contained under the front wheel spindle 32.

Claims (10)

1, miniature hand-drive front-wheel folding bicycle, it comprises by the two sections vehicle frames formed in front and back (1), front fork (2), foot-operated (3), saddle (4), front-wheel (5), trailing wheel (6), driving device (7), braking safety device (8), back clothes hanger (9), car ladder (10), folding device (11), trailer (12), it is characterized in that:

Vehicle frame (1) is the double track framework type, leading portion includes preceding cant beam (13), preceding pipe (14), flat pipe (15), connection pipe (16), two preceding cant beams (13) constitute triangle-frame with connection pipe (16), the triangle-frame top is connected with preceding pipe (14), and the termination of two preceding cant beams (13) becomes the obtuse angle to be connected with two flat pipes (15) respectively; Back segment includes two-tube chain stay (17), two-tube back cant beam (18), two-tube upright fork (19), two connecting panels (20), two-tube chain stay (17) upper forepart is provided with two pairs of auricles (21), on the two-tube chain stay (17) of auricle (21) back, become the obtuse angle to be connected with two-tube back cant beam (18), acutangulate at the termination rear lower of the other end of two-tube back cant beam (18) and to be connected with two-tube upright fork (19), by two connecting panels (20) two-tube upright fork (19) is acutangulated is connected with two-tube chain stay (17), constitute two triangle-frames, at two-tube back cant beam (18), all be connected with connection pipe (22) between the two-tube chain stay (17), two connecting panels (20) are enclosed within on hind axle (90) two ends, the left and right sides respectively and fix, on the two-tube chain stay (17) of cant beam (18) back, two-tube back, be provided with a pair of gusset plate (87), be connected with mudwing (88) on the gusset plate (87), and be connected and fixed by pipe link (89) and hind axle (90); Two sections is two the flat pipes (15) that insert or extract leading portion by the front end of the two-tube chain stay of back segment (17) before and after the vehicle frame (1), and screws on or screw down with fly nut (23) and realize connecting or folding;

Front fork (2) comprises standpipe (24), side pipe (25), transverse tube (26), connecting panel (27), standpipe (24) inserts in the preceding pipe (14) of vehicle frame (1) leading portion, standpipe (24) and transverse tube (26) are connected above the middle part, below, transverse tube (26) middle part is provided with gusset plate (28), be connected with mudwing (29) on the gusset plate (28), and be connected and fixed by pipe link (30) and front wheel spindle (32), transverse tube (26) two ends is provided with blanking cover (31), transverse tube (26) bottom, two ends becomes the obtuse angle to be connected with two lateral canals (25) respectively, two lateral canals (25) become the obtuse angle to link to each other with two connecting panels (27) respectively, two connecting panels (27) are fixed on front wheel spindle (32) two ends, the left and right sides, locate to be provided with retaining (33) up and down at preceding pipe (14), last lower shaft bowl (34), be provided with lamp yoke (35) above the last retaining (33), lamp yoke (35) is provided with acorn nut (36), is provided with ball (37) in the last lower shaft bowl (34);

Foot-operated (3) respectively establish one about front-wheel (5) front lower place, it includes support arm (38), pedal spindle (39), stretcher (40), rubber pedal (41), restraint bolt (42), support arm (38) one ends and front wheel spindle (32) are spirally connected, the end pedal spindle (39) that pedal spindle (39) is located at support arm (38) other end is provided with stretcher (40), stretcher (40) is provided with rubber pedal (41), stretcher (40), rubber pedal (41), pedal spindle (39) can be to front-wheel (5) folded inside, and an end of support arm (38) is provided with restraint bolt (42) and is fixed on the front fork connecting panel (27);

Saddle (4) is made up of seat basin (43), seat cushion (44), and a seat basin (43) is located on two-tube (17) two pairs of auricles of chain stay (21), and connects or pull down with fly nut (45), and a basin (43) is provided with seat cushion (44);

Front-wheel (5) is 16 " drive wheel, trailing wheel (6) is 14 ", and is provided with overstriking spoke (46);

Driving device (7) is the hand-drive front-wheel, it includes two-tube hound (47), the two-tube axle pillar (48) of going up, last axle (49), Upper shaft sleeve pipe (50), handle (51), synchronous cog belt (52), big profile of tooth belt wheel (53), small flywheel (54), left and right sides tape drum (55), two-tube hound (47) one ends acutangulate respectively with front fork transverse tube (26) top, two ends and link to each other, the other end links to each other respectively by bolt with a pair of auricle (56) that Upper shaft sleeve pipe (50) bottom is provided with, auricle (56) is provided with slotted hole (57), two-tube axle pillar (48) one ends of going up link to each other respectively by bolt with a pair of auricle (56) that Upper shaft sleeve pipe (50) bottom is provided with, the other end is enclosed within front wheel spindle (32) two ends, the left and right sides and fixing respectively, Upper shaft sleeve pipe (50) is supported on by two-tube hound (47) by a pair of auricle (56) of its underpart, the two-tube axle pillar (48) of going up, on the double track spider that front fork side pipe (25) is formed, be provided with axle (49) in the Upper shaft sleeve pipe (50), be respectively equipped with axle bowl (58) about last axle (49), ball (59); Respectively establish one about handle (51), it includes crank (60), Handle axis (61), taper knob (62), axle bumper (63), axle bowl (64), ball (65), acorn nut (66), two cranks (60) one ends respectively with (49) two ends, the left and right sides loose joint of last axle, can take off when folding, two cranks (60) other end links to each other with right-hand man's arbor (61), the outer taper knob (62) that is respectively of two Handle axis (61), be respectively equipped with axle bowl (58) between Handle axis (61) and taper knob (62), ball (65), axle bumper (63), the outer acorn nut (66) that is provided with of axle bumper (63), about going up, last axle (49) is provided with big profile of tooth belt wheel (53) between two handles (51), big profile of tooth belt wheel (53) is provided with synchronous cog belt (52), synchronous cog belt (52) is back to big profile of tooth belt wheel (53) by the small flywheel (54) that is located on the front wheel spindle (32), and closed in itself; Small flywheel (54) includes little profile of tooth belt wheel (67), ratchet (68), ratchet (69), ratchet shell (70), silk retaining (71), ball (72), little profile of tooth belt wheel (67) left side is provided with ratchet (68), ratchet (68) both sides are provided with ball (72), silk retaining (71), be provided with ratchet (69) in the ratchet (68), be provided with ratchet shell (70) in the ratchet (69), synchronous cog belt (52), big profile of tooth belt wheel (53), small flywheel (54) are enclosed in the left and right sides two halves tape drum (55);

Braking safety device (8) includes pincerlike lock (73), cable wire (74), brake lever (75), bicycle bell (76), brake lever (75), bicycle bell (76) be contained in respectively cant beam (13) before the vehicle frame about on the pipe, pincerlike lock (73) is fixed on the connecting panel (77) between the two-tube upright fork (19) of trailing wheel (6) oblique upper;

Back clothes hanger (9) includes compressing member (78), torsion spring (79), support (80), the a pair of auricle (81) that connection pipe (22) between support (80) and two-tube back cant beam (18) is provided with is connected to a fixed, the bottom is fixed on the connecting panel (20) of two-tube chain stay (17) rear end, and the rear portion of support (80) is provided with tail lamp bracket (82);

Car ladder (10) includes spring (83), rocking arm (84), pillar (85), clip (86), on the left pipe of two-tube chain stay (17) after with clip (86) car ladder (10) being fixed between cant beam (18) and the trailing wheel (6);

Trailer (12) is a portable case type, it comprises casing (91), case lid (92), handle (93), attaching parts (94), draw bar (95), fly nut (96), hinge (97), little travelling wheel (98), big travelling wheel (99), triangle reinforced rib (100), casing (91) is provided with two fan case lids (92), middle part, casing (91) end is provided with a little travelling wheel (98), the rear portion is provided with two big travelling wheels (99), casing (91) is connected by hinge (97) with the two sides of case lid (92), the front and rear wall of two fan case lids (92) casing (91) when opening is connected with case lid (92) by attaching parts (94), constitute the trailer of band enclosure wall, 3 triangle reinforced ribs (100) are respectively arranged at the top at casing (91) left and right sides, two fan case lids (92) after supporting is opened, middle part in each side of the closed place of two fan case lids (92) is provided with handle (93), the front portion of casing (91) is arranged with two draw bars (95), two draw bars (95) are connected with fly nut (96) with hind axle (90) or pull down, and become suitcase after two fan case lid (92) closures.

2, bicycle according to claim 1 is characterized in that the line of centres of car front-wheel (5), trailing wheel (6) when parking state, and the line of centers of two-tube chain stay (17) becomes 2 ° of 21 ' angles with horizon.

3, bicycle according to claim 1 is characterized in that the overstriking spoke (46) that front-wheel (5), trailing wheel (6) are provided with is No. 12 spokes, and the spoke number respectively is 24.

4, bicycle according to claim 1 is characterized in that full vehicle commander is not more than 1 meter, and overall height is not more than 0.7 meter, widely is not more than 0.4 meter, and saddle is not more than 0.4 meter apart from ground, and car weight is below 9 kilograms.

5, bicycle according to claim 1 is characterized in that riding (3) and respectively establish one about under the front wheel spindle (32).

6, bicycle according to claim 1 is characterized in that the big profile of tooth belt wheel (53) of driving device (7) and the transmitting ratio of little profile of tooth belt wheel (67) are 56: 12.

7, bicycle according to claim 1 is characterized in that the seat basin (43) of saddle (4) is made with glass-felt plastic, and seat cushion (44) is made with foamed plastic.

8, bicycle according to claim 1 is characterized in that trailer (12) is made of plastic.

9,, it is characterized in that wheel hub, braking safety device (8), back clothes hanger (9), car ladder (10), folding device (11) and zero annex of vehicle frame (1), front fork (2), front-wheel (5) trailing wheel (6) made with metallic material according to claim 1 or 4 described bicycles.

10, according to claim 1 or 6 described bicycles, it is characterized in that the big profile of tooth belt wheel (53) of driving device (7), little profile of tooth belt wheel (67) make with Reinforced Nylon, synchronous cog belt (52) is made with polyurethane.

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