CN203888990U - Bevel gear transmission type portable electric bicycle - Google Patents

Abstract

The utility model provides a bevel gear transmission type portable electric bicycle which comprises a bicycle body, a front frame, a saddle linkage mechanism, a front fork, a V-shaped folded handlebar, a front wheel, a rear wheel and a drive mechanism. The bicycle body is composed of a folded box, a double-lug punching part, an upper connecting tube, a bicycle body locking hook, a gear box, a lower connecting tube, a rear fork, a box cover and a bearing bush. The bicycle body locking hook is connected with the front frame in a locking mode. The box cover covers the gear box. The rear wheel is installed on the rear wheel fork. A folded saddle tube of the saddle linkage mechanism can be folded. A seat tube is welded to a seat tube folded blade. The seat tube folded blade and a connecting rod are in linkage with the front frame. The front fork is a single fork connected with a front head tube of the front frame. The front wheel is installed on the front fork. The handlebar is the V-shaped folded handlebar. According to the drive mechanism, a forward-stage bevel gear is connected with a drive shaft in a screwing mode and located in the gear box and the box cover, a longitudinal transmission shaft is connected with a forward-stage conical gear and a backward-stage conical gear in a screwing mode and located on the lower connecting tube, the backward-stage conical gear and a chain wheel are connected to a transverse transmission shaft in a screwing mode, the transverse transmission shaft is located in front of the rear wheel fork, and two cranks are connected with a drive shaft and two pedals.

Description

Bevel gear driving type portable bicycle

Technical field

The utility model relates to a kind of folding portable bicycle, particularly a kind of bevel gear driving type portable bicycle.

Background technology

The quick-folding portable formula bicycle that the design people formerly designs, although there is folding rate fast, also smallerly folding, due to reasons such as structures, outward appearance is unsatisfactory, outside particularly chain is exposed to, always allows people have a kind of not perfect sorry sensation.

Utility model content

The purpose of this utility model is will be on the basis of quick-folding portable formula bicycle, improve, improve and improve, create and a kind of bevel gear and cone gear be arranged in vehicle body, and can not find out in appearance this drive configuration and drive mechanism---bevel gear driving type portable bicycle.The purpose of this utility model is to realize like this, bevel gear driving type portable bicycle, comprises vehicle body, side arm, vehicle seat link gear, front fork, V font folding hand handle, front-wheel, trailing wheel and driver train, is characterized in that: vehicle body comprises folded box, ears stamping, upper connecting leg, vehicle body latch hook, gearcase, lower connecting leg, back vent, lid and bearing backing member, the upper connecting leg of below welding of folded box, the bottom welding gearcase of upper connecting leg, the lower connecting leg of rear welding of gearcase, the rear end welding back vent of lower connecting leg, folded box is box-like blanked part, and the left and right sides of folded box forward lower comer has a pair of mutual to perforation, folded box forward lower comer mutual to perforation for left hole slightly forward, oblique to perforation after slightly leaning on of right ports, the left and right sides at folded box rear portion has a pair of mutual to perforation, and the welded top of folded box has ears stamping, in ears stamping, have mutual the hole of piercing one's ears, ears stamping in the hole of piercing one's ears by lock bolt be rotationally connected vehicle body latch hook, between vehicle body latch hook and the top of folded box, be connected with spring, gearcase is the stamping of a circle box type, the middle embedded bearing of the right flank of gearcase, the left side of gearcase is furnished with lid, and the middle embedded bearing of lid is respectively embedded with a bearing backing member in the pore at lower connecting leg two, embedded bearing in bearing backing member, a bearing is respectively inlayed in the two sides of back vent front portion, and respectively there is a U-lag rear end of back vent two forks, and trailing wheel is installed on the rear end of back vent, side arm is by front head tube, the folding leaf of front-axle beam pipe and beam pipe forms, the top welding front-axle beam pipe of front head tube, the folding leaf of rear end welded grider pipe of front-axle beam pipe, the folding leaf of beam pipe consists of rectangle punching and fork-shaped stamping, the back lower place of rectangle punching is welded with a fork-shaped stamping, the anterior left and right sides of fork-shaped stamping has slightly left front right back mutual oblique to perforation, the left and right sides at the rear portion of fork-shaped stamping has mutual to perforation, the folding leaf of beam pipe mutually oblique to perforation by lock bolt and folded box forward lower comer, mutual oblique is rotationally connected boring a hole, the front top of the folding leaf of beam pipe can be pinned by vehicle body latch hook, vehicle seat link gear comprises saddle, folding saddle pipe, seat pipe, the folding leaf of seat pipe and connecting rod, folding saddle pipe comprises folding leaf, lower folding leaf, saddle pipe head, saddle pipe, semicircle lock shaft and safety plug, upper folding leaf is to become configuration on one side, another side is the horizontal parts with a pair of volume circle, folding Ye Shiyi is cut into the parts of flute profile down, respectively there is mutual through circular hole at two of lower folding leaf flute profile two sides, there is a mutual through rectangular opening at the middle part of lower folding leaf flute profile two sides, one of lower folding leaf two sides to wearing circular hole by lock bolt is rotationally connected to the horizontal a pair of volume circle of upper folding leaf, and is furnished with torsion spring, by semicircle lock shaft pack into lower folding leaf other end to wearing in circular hole, rotate the configuration limit that semicircle lock shaft can pin folded piece, safety plug is packed in the mutual through rectangular opening of lower folding leaf, and mix spring, the lock handle of safety plug and semicircle lock shaft coordinates, semicircle lock shaft can be located, saddle pipe head and upper folding leaf welding, saddle pipe and lower folding leaf welding, saddle is connected on saddle pipe head, saddle pipe is installed in a pipe, the folding leaf of side welding base pipe of seat pipe bottom, the folding leaf of seat pipe is laterally volume circle of upper side band one, the parts that have below a pair of horizontal volume circle, the top volume circle of the folding leaf of seat pipe is by mutual being rotationally connected boring a hole in lock bolt and folded box rear portion, connecting rod is that two is respectively with the parts of an oscillating bearing, connecting rod back oscillating bearing is by being connected with the following a pair of horizontal volume circle of the folding leaf of seat pipe lock bolt, connecting rod front oscillating bearing is by folding mutual perforation is connected in leaf rear portion to lock bolt and beam pipe, front fork is the single tine that a pipe is pressed into wavy bending, front fork is rotationally connected by seven bowls and front head tube, front-wheel is installed on front fork, V font folding hand handle is fixedly connected with front fork, V font folding hand handle is cup joint style lock-connecting piece V font folding hand handle, V font folding hand is comprising handgrip pedestal, U-lag plastic lining, left and right connects part, left and right handles, left lock-connecting piece, right lock-connecting piece, hole cylinder, quick detach, safety catch, inside extending tube and to lock bolt, handgrip pedestal is Intermediate Gray one circular hole, both sides are respectively with flute profile, two flute profiles are cut off workpiece near the both sides inner side of bottom land with the Al squeezing material of convex tendon, each is mutual to perforation with one for two side lower parts of handgrip pedestal two flute profiles, the bottom close-fitting of handgrip pedestal circular hole is socketed an interior poling, in two flute profiles of handgrip pedestal, respectively inlay and connect a U-lag plastic lining, left and right connects the bottom that part is fixedly connected on left and right handles, left lock-connecting piece and right lock-connecting piece are welded in respectively the rear side of left and right handles bottom, left lock-connecting piece is one one-tenth flute profile, the both sides of flute profile with mutual to wearing the aluminum component of circular hole, right lock-connecting piece is the sliced pieces of the Al squeezing material of an Intermediate Gray U-lag, by left and right connect part by lock bolt be connected in handgrip pedestal two flute profile both sides to perforation, make bottom and the two U-lag plastic linings in handgrip pedestal two flute profiles of left and right handles intermeshing, safety catch is the Plastic Parts with U-shaped card, safety catch is connected in the top of the rear side of handgrip pedestal the right groove, what left lock-connecting piece was mutual is rotationally connected hole cylinder to wearing circular hole, hole cylinder connects quick detach, quick disassemble lock is connected on right lock-connecting piece, and fast dismounting handle snaps in the U-shaped card of safety catch, interior poling passes through hanging bolt, Passscheiben and swollen plug, handgrip pedestal is fixed in the pore of front fork, driver train comprises axle drive shaft, longitudinal drive shaft, horizontal transmission shaft, crank, pedal, prime bevel gear, prime cone gear, rear class bevel gear, rear class cone gear, sprocket wheel, flywheel and chain, prime bevel gear is fastened to axle drive shaft, axle drive shaft penetrates in the bearing in gearcase and lid, longitudinal drive shaft penetrates in the bearing hole at lower connecting leg two, prime cone gear is fastened to longitudinal drive shaft front end, rear class bevel gear is fastened to longitudinal drive shaft rear end, rear class cone gear and sprocket wheel are fastened to the right head of horizontal transmission shaft, laterally transmission shaft two ends are installed in the two bearings of back vent front portion, two cranks are fixedly connected on the two ends of axle drive shaft, two pedals are connected in two cranks, chain is wire-wrapped in sprocket wheel and flywheel.

The beneficial effects of the utility model are: the utility model adopts front single tine, rear two forks, both considered that folding rear two-wheeled can relatively draw close, considered that again rear two fork can guarantee intensity of the present utility model, driver train has adopted longitudinal drive shaft to be arranged in lower connecting leg, be arranged in gearcase with prime bevel gear, prime cone gear, and the front portion of back vent top and middle part are with inside flanging, make driving of the present utility model and drive mechanism all obtain ideally hiding.

Accompanying drawing explanation

Fig. 1 is the utility model structural representation;

Fig. 2 is the organigram of the utility model vehicle body;

Fig. 3 is the schematic diagram of the utility model part driver train;

Fig. 4 is the schematic diagram of the utility model vehicle seat link gear part-structure;

Fig. 5 is the schematic diagram of the folding principle of the utility model vehicle seat link gear;

Fig. 6 is the utility model folding process schematic diagram;

Fig. 7 is the folding complete figure of the utility model;

In figure: 1---vehicle body, 2---side arm, 3---vehicle seat link gear, 4---front fork, 5---V font folding hand handle, 6---front-wheel, 7---trailing wheel, 8---driver train; Wherein vehicle seat link gear 3 also comprises: 31---saddle, and 32---folding saddle pipe, 33---seat pipe, 34---the folding leaf of seat pipe, 35---connecting rod; Driver train 8 also comprises: 811---axle drive shaft, 812---longitudinal drive shaft, 813---horizontal transmission shaft, 821---crank, 822---pedal, 83---prime bevel gear, 84---prime cone gear, 85---rear class bevel gear, 86---rear class cone gear, 87---sprocket wheel, 88---flywheel, 89---chain.

The specific embodiment

According to Fig. 1, Fig. 2, Fig. 3, Fig. 4, described bevel gear driving type portable bicycle, comprise vehicle body 1, side arm 2, vehicle seat link gear 3, front fork 4, V font folding hand 5, front-wheel 6, trailing wheel 7 and driver train 8;

Described vehicle body 1 comprises folded box, ears stamping, upper connecting leg, vehicle body latch hook, gearcase, lower connecting leg, back vent, lid and bearing backing member, described folded box is front and back openings, top seal, the box-like blanked part of inside flanging tiltedly, the left and right sides of described folded box forward lower comer has a pair of mutual to perforation, what described folded box forward lower comer was mutual is that left hole is slightly forward to perforation, oblique to perforation after slightly leaning on of right ports, the left and right sides at described folded box rear portion has a pair of mutual to perforation, the welded top of described folded box has described ears stamping, described ears stamping fore-and-aft direction is flute profile, the left and right sides is halfround bar slice shape, on two halves disc, there are the mutual parts to perforation, described folded box is the top of rear aperture, also weld an arc-like sheet.

Described vehicle body latch hook is the aluminium extruded type blank of zone circle hole, middle part, front lower place buckle, rear portion flats, the vertical slotted hole that has of described vehicle body latch hook rear portion flats, the circle hole of described vehicle body latch hook is by lock bolt and mutual being rotationally connected the hole of piercing one's ears of described ears stamping, with a bolt, penetrate in the slotted hole of described vehicle body latch hook again, penetrate again in a little spring, then be screwed into the top of described folded box.

The below of described folded box connects described upper connecting leg, the described gearcase of lower end welding of described upper connecting leg, described gearcase is the stamping of opening round box type left, there is one bowl of type counterbore at the middle part of the right flank of described gearcase, in the middle of bowl type counterbore, it is through hole, there is a perforate round side after described gearcase leans on, described gearcase is corresponding with the caliber of described lower connecting leg by the circle warp of the perforate of rear round side, the opening part of described gearcase has the auricle of three inside bendings of decile, on three auricles, respectively there is a tapped bore, described gearcase is by the perforate of rear round side and the welding of the front end of described lower connecting leg, the rear end of described lower connecting leg is welded in the perforate of described back vent front end face, described back vent is that front end face has a perforate, respectively there is the stamping of one bowl of type counterbore the front portion of the left and right sides, two bowls of type counterbores of described back vent with mutual to perforation, the front portion of described back vent top and middle part are with inside flanging, respectively there is a U-lag rear end of described back vent two forks, the U-lag of described back vent is for installing described trailing wheel 7, described trailing wheel 7 is inflated wheel of 10 inches.

Embedded bearing in described gearcase bowl type counterbore, the front-end and back-end of described lower connecting leg pore are respectively embedded with a bearing backing member, described bearing backing member is that counterbore is connected with through hole, the outer warp that counterbore is one is with the nylon part of chimb, bearing backing member described in two is respectively inlayed a bearing, in two bowls of type counterbores of described back vent, respectively inlay a bearing, the left side of described gearcase is furnished with described lid, described lid is that middle part has one bowl of type counterbore, there is the dome-shaped stamping of a through hole centre of bowl type counterbore, embedded bearing in the bowl type counterbore of described lid, on described lid, be also symmetrically distributed with three connecting bores, three connecting bores of described lid are corresponding with the tapped bore of described gearcase left surface three auricles, described lid is connected in the left side of described gearcase with three bolts by three connecting bores.

Described side arm 2 comprises front head tube, front-axle beam pipe and beam pipe fold leaf, the described front-axle beam pipe of top welding of described front head tube, the described folding leaf of beam pipe of rear end welding of described front-axle beam pipe, the folding leaf of described beam pipe consists of rectangle punching and fork-shaped stamping, the back lower place of described rectangle punching is welded with a fork-shaped stamping, the anterior left and right sides of described fork-shaped stamping has slightly left front right back mutual oblique to perforation, the left and right sides at the rear portion of described fork-shaped stamping has mutual to perforation, the folding leaf of described beam pipe mutual oblique to perforation by mutual oblique being rotationally connected boring a hole of lock bolt and described folded box forward lower comer, what the folding leaf of described beam pipe rear portion was mutual is used for connecting described connecting rod 35 to perforation, the top of the folding leaf of described beam pipe can be pinned by described vehicle body latch hook.

Described vehicle seat link gear 3 comprises saddle 31, folding saddle pipe 32, seat pipe 33, the folding leaf 34 of seat pipe and connecting rod 35, described folding saddle pipe 32 comprises folding leaf, lower folding leaf, saddle pipe head, saddle pipe, semicircle lock shaft and safety plug, described upper folding leaf is that back becomes configuration, front is the horizontal parts with two volume circles, described folding leaf configuration on one side and half described circular shaft phase contract, the hole of described folding leaf two volume circles in front is same center of circle line, the top of described upper folded piece is the described saddle pipe head of welding upwards, described saddle pipe head can be by the fixing interlocking of the pipe clamp of described saddle 31.

?described lower folding leaf is the blanked part of one one-tenth flute profile, two, front and back of described lower folding leaf flute profile two sides respectively has mutual to wearing circular hole, it is one mutual to wearing rectangular opening that the middle part of described lower folding leaf flute profile two sides has, described lower folding leaf front mutual to perforation by being rotationally connected wearing bolt and described folding leaf two volume circles in front and a torsion spring, described saddle pipe is a metal circular tube, weld with described saddle pipe downwards the bottom of described saddle pipe, and described saddle pipe is installed in described seat pipe 33.

Described semicircle lock shaft, comprise half circular shaft, lock handle and packing ring, half described circular shaft is that blank, one end of the iron wire material of a semicircle shape has a tapped bore, the left head of described half circular shaft is connected with described lock handle, described lock handle can be that Al squeezing material slice processing forms, also can be that enhancing nylon plastic(s) is injection molded, described half circular shaft is penetrated in described gasket hole, penetrate from left to right more described lower folding leaf back mutual to wearing in circular hole, then the Bolt to position of screwing in the screw of described half circular shaft right-hand member.

Described safety plug, the pin, the crown portion that are a fan-shaped head are with a sulculus, the sulculus at described safety plug top and the lock handle of described semicircle lock shaft match, described safety plug can be that Al squeezing material slice processing forms, also can be that enhancing nylon plastic(s) is injection molded, described safety plug is penetrated to neutralizing in a spring wearing rectangular opening of described lower folding leaf central part from left to right, at a top of a spring and the neck of the described safety plug stove bolt of screwing on, make described safety plug keep the upper shape that plays again.

Described seat pipe 33, the side that is a pipe top has a groove, and at top, be socketed a pipe clamp, the described folding leaf 34 of seat pipe of leading flank welding of described seat pipe 33 bottoms, the described folding leaf 34 of seat pipe is upper side band one volume circles, the blanked part of a pair of volume circle of lower sideband, the folding leaf of described seat pipe 34 times has corresponding with the oscillating bearing of described connecting rod 35 shelves of opening to the centre of volume circle, the upper volume circle of the folding leaf 34 of described seat pipe is by mutual being rotationally connected boring a hole in lock bolt and described folded box rear portion, described connecting rod 35 is that two is respectively with the parts of an oscillating bearing, the oscillating bearing at described connecting rod 35 two is oscillating bearings of 8 millimeters of endoporus φ, described connecting rod 35 back oscillating bearings are by being connected volume circle with the lower of the folding leaf 34 of described seat pipe lock bolt, described connecting rod 35 front oscillating bearings are by folding mutual hole is connected in leaf rear portion to lock bolt and described beam pipe.

Described front fork 4 is single tine shape front forks that front fork is connected with front fork tube one, described front fork 4 be with a metal circular tube be pressed into wavy bending, in pipe bottom tube hole, close-fitting is pressed into cylindrical metal part again, in the related cylindrical metal part in side of described pipe bottom is opened a tapped bore, tapped bore together, being screwed into front wheel spindle again forms, the top of described front fork 4 is rotationally connected by seven bowls and front head tube, described front-wheel 6 is socketed on the front wheel spindle of described front fork 4, and described front-wheel 6 is inflated wheel of 10 inches.

Described V font folding hand, 5, comprises handgrip pedestal, U-lag plastic lining, left and right connects part, left and right handles, left lock-connecting piece, right lock-connecting piece, hole cylinder, quick detach, safety catch, inside extending tube and to lock bolt, described handgrip pedestal, is Intermediate Gray one circular hole, both sides are respectively with flute profile, two flute profiles are cut off workpiece near the both sides inner side of bottom land with the Al squeezing material of convex tendon, each is mutual to perforation with one for two side lower parts of described handgrip pedestal two flute profiles, one tapped bore is arranged at the top of described handgrip pedestal the right groove rear side, inside extending tube described in the bottom close-fitting socket one of described handgrip pedestal circular hole, described U-lag plastic lining is that upper middle part is U-lag, bottom is flat-bottom slot, the both sides of flat-bottom slot are with mutually to the Plastic Parts of boring a hole, and two outsides of described U-lag plastic lining are respectively with sulculus, and described in two, the sulculus of U-lag plastic lining is corresponding to the convex tendon in handgrip pedestal flute profile described in two, and be pushed in the flute profile of handgrip pedestal described in two, by U-lag plastic lining bottom described in two to perforation corresponding to the two flute profile both sides of handgrip pedestal described in two to perforation, the caliber of the U-lag of described U-lag plastic lining and described left and right handles matches.

Described left and right connects part, it is the workpiece of the Al squeezing material section of a bottom zone circle shape, described left and right connects the top of part, the cylinder that has Vehicle Processing to form, described left and right connects the cylinder, fixedly sleeved in the bottom of described left and right handles of part, the socket place that described left and right handles and described left and right connect part is equipped with a pin, and described left and right handles becomes that V font is lain prone outward, top is crooked backward; Described left and right connect part by two pairs of lock bolts be rotationally connected with described bottom, pedestal flute profile both sides to U-lag plastic lining bottom in perforation and described in two in boring a hole.

Described left lock-connecting piece, it is one one-tenth flute profile, the both sides of flute profile with mutual to wearing the aluminum component of circular hole, described left lock-connecting piece is welded in the left hand of described left and right handles the rear side of bottom, described right lock-connecting piece, it is the sliced pieces of the Al squeezing material of an Intermediate Gray U-lag, described right lock-connecting piece is welded in the rear side of the right handgrip bottom of described left and right handles, the U-lag of described right lock-connecting piece is corresponding with the flute profile of described left lock-connecting piece, described hole cylinder, the side that is a metal cylinder has a pair of perforation, described hole cylinder penetrate described left lock-connecting piece up and down to wearing in circular hole, and mutual to wearing circular hole normal-running fit with described left lock-connecting piece, described quick detach is by a circle hook bolt, fast dismounting handle, pad, spring and Anti-slip nut form, eccentric orfice on described fast dismounting handle is rotationally connected by rivet and described circle hook bolt, described circle hook bolt penetrates described pad, penetrate again in a spring, penetrate again the hole cylinder side that is connected in the upper and lower circular hole of described left lock-connecting piece in perforation, and be arranged in the groove of described left lock-connecting piece, and then screw in described Anti-slip nut, described quick disassemble lock is connected in the U-lag of described right lock-connecting piece, described safety catch is the Plastic Parts with U-shaped card, connecting bore is arranged at the bottom of described safety catch U-shaped card, the connecting bore of described safety catch is bolted in the tapped bore of the rear upper lateral part of described handgrip pedestal the right groove, the U-shaped card of described safety catch is corresponding with the fast dismounting handle of described quick detach, and engaging.

Described driver train 8 comprises axle drive shaft 811, longitudinal drive shaft 812, horizontal transmission shaft 813, crank 821, pedal 822, prime bevel gear 83, prime cone gear 84, rear class bevel gear 85, rear class cone gear 86, sprocket wheel 87, flywheel 88 and chain 89, described prime bevel gear 83 is modification of nylon bevel gears of 2.5 modulus 30 teeth, there is metal insert the centre of described prime bevel gear 83, the center of metal insert is with anti-pitch thread hole, described prime bevel gear 83 is fastened on described axle drive shaft 811, described axle drive shaft 811 is the middle part anti-pitch threads that kept left, two ends are with square tenon, the columniform axle that bearing hole in two and described gearcase and described lid matches, two of described axle drive shaft 811 penetrates in the bearing in described gearcase and described lid, described longitudinal drive shaft 812 is axles of the anti-pitch thread of two ends band, described longitudinal drive shaft 812 penetrates in the bearing at described lower connecting leg two, described prime cone gear 84 is modification of nylon cone gears of 2.5 modulus 15 teeth, there is metal insert the centre of described prime cone gear 84, the center of metal insert is with anti-pitch thread hole, described prime cone gear 84 is fastened to the front end of described longitudinal drive shaft 812, described prime cone gear 84 and described prime bevel gear 83 engagement fit, described rear class bevel gear 85 is modification of nylon bevel gears of 2 modulus 30 teeth, there is metal insert the centre of described rear class bevel gear 85, the center of metal insert is with anti-pitch thread hole, described rear class bevel gear 85 is fastened to the rear end of described longitudinal drive shaft 812, described rear class cone gear 86 is modification of nylon cone gears of 2 mould 15 teeth, there is metal insert the centre of described rear class cone gear 86, the center of metal insert is threaded hole, the metal insert of described rear class cone gear 86 is fixedly connected with described sprocket wheel 87, sprocket wheel 87 described in described rear class cone gear 86 inconjunction withs is fastened to the right head of described horizontal transmission shaft 813, described horizontal transmission shaft 813 is right headband outside threads, the center of two ends end points is respectively with the axle of a tapped bore, described sprocket wheel 87 is sprocket wheels of 4 minutes 10 teeth, the two ends of described horizontal transmission shaft 813 penetrate in the bearing in the anterior two bowls of type counterbores of described rear wheel fork, with two bolts, respectively with a pad, be fastened in the tapped bore at described horizontal transmission shaft 813 two ends again, crank 821 described in two is fixedly connected on the square tenon at described axle drive shaft 811 two ends, pedal 822 described in two is connected on the crank 821 described in two, described pedal 822 is folding pedals, on sprocket wheel 87 described in described chain 89 is wire-wrapped in and described flywheel 88, described flywheel 88 is coupled flywheels of 4 minutes 9 teeth.

Claims (9)

1. a bevel gear driving type portable bicycle, comprises vehicle body, side arm, vehicle seat link gear, front fork, V font folding hand handle, front-wheel, trailing wheel and driver train, is characterized in that: vehicle body comprises folded box, ears stamping, upper connecting leg, vehicle body latch hook, gearcase, lower connecting leg, back vent, lid and bearing backing member, the upper connecting leg of below welding of folded box, the bottom welding gearcase of upper connecting leg, the lower connecting leg of rear welding of gearcase, the rear end welding back vent of lower connecting leg, folded box is box-like blanked part, and the left and right sides of folded box forward lower comer has a pair of mutual to perforation, folded box forward lower comer mutual to perforation for left hole slightly forward, oblique to perforation after slightly leaning on of right ports, the left and right sides at folded box rear portion has a pair of mutual to perforation, and the welded top of folded box has ears stamping, in ears stamping, have mutual the hole of piercing one's ears, ears stamping in the hole of piercing one's ears by lock bolt be rotationally connected vehicle body latch hook, between vehicle body latch hook and the top of folded box, be connected with spring, gearcase is the stamping of a circle box type, the middle embedded bearing of the right flank of gearcase, the left side of gearcase is furnished with lid, and the middle embedded bearing of lid is respectively embedded with a bearing backing member in the pore at lower connecting leg two, embedded bearing in bearing backing member, a bearing is respectively inlayed in the two sides of back vent front portion, and respectively there is a U-lag rear end of back vent two forks, and trailing wheel is installed on the rear end of back vent, side arm is by front head tube, the folding leaf of front-axle beam pipe and beam pipe forms, the top welding front-axle beam pipe of front head tube, the folding leaf of rear end welded grider pipe of front-axle beam pipe, the folding leaf of beam pipe consists of rectangle punching and fork-shaped stamping, the back lower place of rectangle punching is welded with a fork-shaped stamping, the anterior left and right sides of fork-shaped stamping has slightly left front right back mutual oblique to perforation, the left and right sides at the rear portion of fork-shaped stamping has mutual to perforation, the folding leaf of beam pipe mutually oblique to perforation by lock bolt and folded box forward lower comer, mutual oblique is rotationally connected boring a hole, the front top of the folding leaf of beam pipe can be pinned by vehicle body latch hook, vehicle seat link gear comprises saddle, folding saddle pipe, seat pipe, the folding leaf of seat pipe and connecting rod, folding saddle pipe comprises folding leaf, lower folding leaf, saddle pipe head, saddle pipe, semicircle lock shaft and safety plug, upper folding leaf is to become configuration on one side, another side is the horizontal parts with a pair of volume circle, folding Ye Shiyi is cut into the parts of flute profile down, respectively there is mutual through circular hole at two of lower folding leaf flute profile two sides, there is a mutual through rectangular opening at the middle part of lower folding leaf flute profile two sides, one of lower folding leaf two sides to wearing circular hole by lock bolt is rotationally connected to the horizontal a pair of volume circle of upper folding leaf, and is furnished with torsion spring, by semicircle lock shaft pack into lower folding leaf other end to wearing in circular hole, rotate the configuration limit that semicircle lock shaft can pin folded piece, safety plug is packed in the mutual through rectangular opening of lower folding leaf, and mix spring, the lock handle of safety plug and semicircle lock shaft coordinates, semicircle lock shaft can be located, saddle pipe head and upper folding leaf welding, saddle pipe and lower folding leaf welding, saddle is connected on saddle pipe head, saddle pipe is installed in a pipe, the folding leaf of side welding base pipe of seat pipe bottom, the folding leaf of seat pipe is laterally volume circle of upper side band one, the parts that have below a pair of horizontal volume circle, the top volume circle of the folding leaf of seat pipe is by mutual being rotationally connected boring a hole in lock bolt and folded box rear portion, connecting rod is that two is respectively with the parts of an oscillating bearing, connecting rod back oscillating bearing is by being connected with the following a pair of horizontal volume circle of the folding leaf of seat pipe lock bolt, connecting rod front oscillating bearing is by folding mutual perforation is connected in leaf rear portion to lock bolt and beam pipe, front fork is the single tine that a pipe is pressed into wavy bending, front fork is rotationally connected by seven bowls and front head tube, front-wheel is installed on front fork, V font folding hand handle is fixedly connected with front fork, V font folding hand handle is cup joint style lock-connecting piece V font folding hand handle, V font folding hand is comprising handgrip pedestal, U-lag plastic lining, left and right connects part, left and right handles, left lock-connecting piece, right lock-connecting piece, hole cylinder, quick detach, safety catch, inside extending tube and to lock bolt, handgrip pedestal is Intermediate Gray one circular hole, both sides are respectively with flute profile, two flute profiles are cut off workpiece near the both sides inner side of bottom land with the Al squeezing material of convex tendon, each is mutual to perforation with one for two side lower parts of handgrip pedestal two flute profiles, the bottom close-fitting of handgrip pedestal circular hole is socketed an interior poling, in two flute profiles of handgrip pedestal, respectively inlay and connect a U-lag plastic lining, left and right connects the bottom that part is fixedly connected on left and right handles, left lock-connecting piece and right lock-connecting piece are welded in respectively the rear side of left and right handles bottom, left lock-connecting piece is one one-tenth flute profile, the both sides of flute profile with mutual to wearing the aluminum component of circular hole, right lock-connecting piece is the sliced pieces of the Al squeezing material of an Intermediate Gray U-lag, by left and right connect part by lock bolt be connected in handgrip pedestal two flute profile both sides to perforation, make bottom and the two U-lag plastic linings in handgrip pedestal two flute profiles of left and right handles intermeshing, safety catch is the Plastic Parts with U-shaped card, safety catch is connected in the top of the rear side of handgrip pedestal the right groove, what left lock-connecting piece was mutual is rotationally connected hole cylinder to wearing circular hole, hole cylinder connects quick detach, quick disassemble lock is connected on right lock-connecting piece, and fast dismounting handle snaps in the U-shaped card of safety catch, interior poling passes through hanging bolt, Passscheiben and swollen plug, handgrip pedestal is fixed in the pore of front fork, driver train comprises axle drive shaft, longitudinal drive shaft, horizontal transmission shaft, crank, pedal, prime bevel gear, prime cone gear, rear class bevel gear, rear class cone gear, sprocket wheel, flywheel and chain, prime bevel gear is fastened to axle drive shaft, axle drive shaft penetrates in the bearing in gearcase and lid, longitudinal drive shaft penetrates in the bearing hole at lower connecting leg two, prime cone gear is fastened to longitudinal drive shaft front end, rear class bevel gear is fastened to longitudinal drive shaft rear end, rear class cone gear and sprocket wheel are fastened to the right head of horizontal transmission shaft, laterally transmission shaft two ends are installed in the two bearings of back vent front portion, two cranks are fixedly connected on the two ends of axle drive shaft, two pedals are connected in two cranks, chain is wire-wrapped in sprocket wheel and flywheel.

2. bevel gear driving type portable bicycle according to claim 1, it is characterized in that: described folded box is front and back openings, top seal, the box-like blanked part of inside flanging tiltedly, described ears stamping fore-and-aft direction is flute profile, the left and right sides is halfround bar slice shape, on two halves disc, there are the mutual parts to perforation, described folded box is the top of rear aperture, also weld an arc-like sheet, described vehicle body latch hook is zone circle hole, middle part, front lower place buckle, the aluminium extruded type blank of rear portion flats, the vertical slotted hole that has of described vehicle body latch hook rear portion flats.

3. bevel gear driving type portable bicycle according to claim 1, it is characterized in that: there is one bowl of type counterbore at the middle part of the right flank of described gearcase, in the middle of bowl type counterbore, it is through hole, there is a perforate round side after described gearcase leans on, described gearcase is corresponding with the caliber of described lower connecting leg by the circle warp of the perforate of rear round side, the opening part of described gearcase has the auricle of three inside bendings of decile, on three auricles, respectively there is a tapped bore, described gearcase is by the perforate of rear round side and the welding of the front end of described lower connecting leg, the rear end of described lower connecting leg is welded in the perforate of described back vent front end face, described back vent is that front end face has a perforate, respectively there is the stamping of one bowl of type counterbore the front portion of the left and right sides, two bowls of type counterbores of described back vent with mutual to perforation, the front portion of described back vent top and middle part are with inside flanging, the U-lag of described back vent is for installing described trailing wheel, described trailing wheel is the inflated wheel of 10 inches.

4. bevel gear driving type portable bicycle according to claim 3, it is characterized in that: embedded bearing in described gearcase bowl type counterbore, described bearing backing member is that counterbore is connected with through hole, the outer warp that counterbore is one is with the nylon part of chimb, in two bowls of type counterbores of described back vent, respectively inlay a bearing, described lid is that middle part has one bowl of type counterbore, there is the dome-shaped stamping of a through hole centre of bowl type counterbore, embedded bearing in the bowl type counterbore of described lid, on described lid, be also symmetrically distributed with three connecting bores, three connecting bores of described lid are corresponding with the tapped bore of described gearcase left surface three auricles, described lid is connected in the left side of described gearcase with three bolts by three connecting bores.

5. bevel gear driving type portable bicycle according to claim 1, it is characterized in that: described folding leaf configuration on one side and half described circular shaft phase contract, the hole of described folding leaf two volume circles in front is same center of circle line, described semicircle lock shaft, comprise half circular shaft, lock handle and packing ring, half described circular shaft is the blank of the iron wire material of a semicircle shape, one end has a tapped bore, the left head of described half circular shaft is connected with described lock handle, described half circular shaft is penetrated in described gasket hole, penetrate from left to right more described lower folding leaf back mutual to wearing in circular hole, the Bolt to position of screwing in the screw of described half circular shaft right-hand member again.

6. bevel gear driving type portable bicycle according to claim 1, it is characterized in that: described safety plug, the pin, the crown portion that are a fan-shaped head are with a sulculus, the sulculus at described safety plug top and the lock handle of described semicircle lock shaft match, described safety plug is penetrated to neutralizing in a spring wearing rectangular opening of described lower folding leaf central part from left to right, at a top of a spring and the neck of the described safety plug stove bolt of screwing on, make described safety plug keep the upper shape that plays again.

7. bevel gear driving type portable bicycle according to claim 1, it is characterized in that: described front fork is the single tine shape front fork that front fork is connected with front fork tube one, described front fork be with a metal circular tube be pressed into wavy bending, in pipe bottom tube hole, close-fitting is pressed into cylindrical metal part again, in the related cylindrical metal part in side of described pipe bottom is opened a tapped bore, tapped bore together, being screwed into front wheel spindle again forms, described front-wheel is socketed on the front wheel spindle of described front fork, and described front-wheel is the inflated wheel of 10 inches.

8. bevel gear driving type portable bicycle according to claim 1, it is characterized in that: described in two, the sulculus of U-lag plastic lining is corresponding to the convex tendon in handgrip pedestal flute profile described in two, and be pushed in the flute profile of handgrip pedestal described in two, by U-lag plastic lining bottom described in two to perforation corresponding to the two flute profile both sides of handgrip pedestal described in two to perforation, the caliber of the U-lag of described U-lag plastic lining and described left and right handles matches, described quick detach be connected in hole cylinder side in the upper and lower circular hole of described left lock-connecting piece in perforation, and be arranged in the groove of described left lock-connecting piece, described quick disassemble lock is connected in the U-lag of described right lock-connecting piece.

9. bevel gear driving type portable bicycle according to claim 1, it is characterized in that: described prime bevel gear is the modification of nylon bevel gear of 2.5 modulus 30 teeth, there is metal insert the centre of described prime bevel gear, the center of metal insert is with anti-pitch thread hole, described prime bevel gear is fastened on described axle drive shaft, described axle drive shaft is the middle part anti-pitch thread that kept left, two ends are with square tenon, the columniform axle that bearing hole in two and described gearcase and described lid matches, described longitudinal drive shaft is the axle of the anti-pitch thread of two ends band, described prime cone gear is the modification of nylon cone gear of 2.5 modulus 15 teeth, there is metal insert the centre of described prime cone gear, the center of metal insert is with anti-pitch thread hole, described prime cone gear and described prime bevel gear engagement fit, described rear class bevel gear is the modification of nylon bevel gear of 2 modulus 30 teeth, there is metal insert the centre of described rear class bevel gear, the center of metal insert is with anti-pitch thread hole, described rear class cone gear is the modification of nylon cone gear of 2 mould 15 teeth, there is metal insert the centre of described rear class cone gear, the center of metal insert is threaded hole, the metal insert of described rear class cone gear is fixedly connected with described sprocket wheel, sprocket wheel described in described rear class cone gear inconjunction with is fastened to the right head of described horizontal transmission shaft, described sprocket wheel is the sprocket wheel of 4 minutes 10 teeth, described pedal is folding pedal, described flywheel is the coupled flywheel of 4 minutes 9 teeth.