CN111301580A

CN111301580A - Magnetic folding positioning portable electric power-assisted vehicle

Info

Publication number: CN111301580A
Application number: CN202010109567.8A
Authority: CN
Inventors: 庞明方
Original assignee: Taicang Chezhongbao Leisure Products Co Ltd
Current assignee: Taicang Chezhongbao Leisure Products Co Ltd
Priority date: 2020-02-22
Filing date: 2020-02-22
Publication date: 2020-06-19

Abstract

A magnetic folding positioning portable electric power-assisted vehicle comprises a telescopic double-rotation type handlebar, a front fork, a front piece, a middle beam, a folding connecting piece, a clamping quick release part, a tug piece, a rear fork piece, a vehicle seat, a front wheel, a rear wheel, a manual driving mechanism and an electric power-assisted system, wherein the telescopic double-rotation type handlebar is formed by connecting a left handle, a right handle, an upper locking piece and a lower locking piece, the front piece is rotatably connected with a front shaft tube, the middle beam is rotatably connected with the front piece, the middle beam is formed by connecting a beam tube, the front connecting piece, an upper magnetic attraction part and a lower magnetic attraction part, the beam tube is sleeved with the folding connecting piece and the tug piece, the folding connecting piece is respectively rotatably connected with the vehicle seat and the rear fork piece, the rear fork piece is formed by connecting two rear fork pieces, a five-way tube and a shock absorbing piece, the two rear fork pieces are connected with the rear wheel, the vehicle seat is formed by connecting a seat tube, a locking piece, a, the electric power-assisted system comprises a motor, a battery, a controller, a control switch and a power-assisted sensor.

Description

Magnetic folding positioning portable electric power-assisted vehicle

The technical field is as follows:

the invention relates to a folding portable electric moped, in particular to a magnetic folding positioning portable electric moped which can be folded to be small enough and can be folded quickly.

Background art:

at present, a plurality of folding electric moped exist in the market, but the volume of the folding electric moped is still larger after being folded.

The invention content is as follows:

the invention aims to provide a magnetic folding positioning portable electric moped which is high in folding speed and small enough in folding. The object of the invention is thus achieved; portable electric bicycle of folding location of magnetism, including flexible dual rotary type handlebar, front fork, front part, centre sill, folding even piece, press from both sides tight quick detach, tow wheel spare, back fork spare, saddle, front wheel, rear wheel, manpower drive mechanism and electronic helping hand system, characterized by: the telescopic double-rotation type handlebar comprises a left handle, a right handle, an upper locking piece and a lower locking piece, wherein the left handle and the right handle are both composed of a vertical handlebar tube and a horizontal handlebar tube, the vertical handlebar tube is formed by connecting a vertical handlebar head and a vertical handlebar tube, the vertical handlebar head is connected to the top end of the vertical handlebar tube, an omega-shaped connector is arranged on the vertical handlebar head, the vertical handlebar head is connected with the horizontal handlebar tube through the omega-shaped connector, the right end of the horizontal handlebar tube of the left handle and the left end of the horizontal handlebar tube of the right handle are respectively sleeved with a locking ring, and the vertical handlebar tube further comprises a bottom ring; the upper lock piece comprises a handle base, two nylon lining rings, an upper lock connecting piece, two lock connecting rings and two positioning rings, wherein the left end and the right end of the handle base are respectively provided with an upward and downward slotted round hole, a slot of the slotted round hole at the left end of the handle base is opposite to a slot of the slotted round hole at the right end, a longitudinal mutual opposite penetrating hole is formed in the vertical direction of the slot of the slotted round hole at the left end of the handle base, a longitudinal mutual opposite penetrating hole is formed in the vertical direction of the slot of the slotted round hole at the right end of the handle base, the longitudinal mutual opposite penetrating hole on the slot of the slotted round hole at the left end of the handle base and the longitudinal mutual opposite penetrating hole on the slot of the slotted round hole at the right end of the handle base are respectively provided with a pair of bolt and nuts, a nylon is respectively embedded in the slotted round hole at the left end and the slotted round hole at the right end of the handle base, the lining ring locking piece comprises a U-shaped clamp, the U-shaped clamp is formed by connecting a J-shaped seat and a locking tongue, the J-shaped seat is connected with the middle part of the handle base through a bolt, an upper quick-release part is connected with the J-shaped seat and the locking tongue, the U-shaped clamp formed by the J-shaped seat and the locking tongue can be tightened by the upper quick-release part, a locking ring at the right end of the horizontal tube of the left handle and a locking ring at the left end of the horizontal tube of the right handle are locked by the U-shaped clamp after being unfolded, a vertical tube of the left handle and a vertical tube of the right handle are connected in nylon lining rings at the left end and the right end of the handle base, a pair of bolts and nuts in a longitudinal pair of through holes on a slit of the slit round hole at the left end of the handle base are screwed, the handle base is provided with a slotted round hole at the right end, and the slotted round hole at the left end and the slotted round hole at the right end are tightly clamped to the handle vertical pipe of the left handle and the handle vertical pipe of the right handle, which can rotate but are not loosened to be proper; the lower locking piece consists of a lower clamping piece and a lower quick release part, wherein the left front end and the right front end of the lower clamping piece are respectively provided with an up-down slotted round hole, the slot of the slotted round hole at the left front end of the lower clamping piece faces the front, the slot of the slotted round hole at the right front end of the lower clamping piece faces the front, the left side of the slot of the slotted round hole at the left front end of the lower clamping piece is provided with a forward left lug, the right side of the slot of the slotted round hole at the right front end of the lower clamping piece is provided with a forward right lug, the middle part of the lower clamping piece is provided with a forward convex block, a mutual transverse through hole is arranged among the left lug, the convex block and the right lug of the lower clamping piece, the middle part of the left side of the lower clamping piece is provided with a vertical round hole, the slotted round hole at the left rear end of the lower clamping piece is fixedly connected with the front shaft tube, the rear end of the right side of the, the left handle and the right handle penetrate through vertical round holes at the left front end and the right front end of the lower clamp, two bottom rings are fixedly sleeved at the bottom end of a handle vertical pipe of the left handle and the bottom end of a handle vertical pipe of the right handle respectively, the lower quick-release device is arranged in a transverse through hole formed by a left lug, a convex block and a right lug of the lower clamp, the lower quick-release device can tighten a slotted round hole at the left end of the lower clamp and a slotted round hole at the right end of the lower clamp, the left handle and the right handle in the lower clamp are fixed, and a front shaft tube is further arranged in a vertical round hole at the rear end of the lower clamp; the front end of the front part is rotationally connected with a front axle tube, the front end of the middle beam is rotationally connected with the front part, the middle beam comprises a beam tube, a front connecting part locking quick release, an upper magnetic attraction and a lower magnetic attraction, the front connecting part, the upper magnetic attraction and the lower magnetic attraction are respectively arranged at the front end part of the beam tube, the front connecting part locking quick release is arranged at the upper end part of the front connecting part, the middle rear part of the beam tube is sleeved with a folding connecting part, the rear end of the beam tube is sleeved with a towing wheel part, a battery and a controller are arranged in a tube hole of the beam tube, the left upper part of the folding connecting part is provided with an upper groove part with a forward opening, the left middle part is provided with a longitudinal rectangular slotted hole, the right lower part is provided with a part with a lower groove part with a downward opening, a pair of transverse through holes are arranged at the front lower part of the upper groove part of the folding connecting part, the lower end parts at both sides of the lower groove part of the folding connecting part are provided, a pair of transverse through holes on two sides of the lower groove-shaped part of the folding connecting piece are rotatably connected with the rear fork piece through two pairs of bolts and nuts; the rear fork piece is composed of two rear fork pieces, a five-way pipe and a shock absorbing piece, the five-way pipe is connected to the front parts of the two rear fork pieces, the shock absorbing piece is connected to the upper part of the middle parts of the two rear fork pieces, the shock absorbing piece comprises a shock absorbing frame, a shock absorbing block and an elastic connecting piece, the shock absorbing block is abutted to a towing wheel frame of the towing wheel piece to generate a shock absorbing effect, the rear ends of the two rear fork pieces are connected with rear wheels, the rear fork piece can be folded downwards and forwards, and after the rear fork piece is folded, the rear end of the rear fork piece on the right side of the rear fork piece can be attracted and absorbed by; the saddle comprises a seat tube, a locking piece, a connecting rod and a saddle, wherein the connecting rod is rotationally connected with the seat tube and a front piece, the locking piece is arranged at the lower end part of the seat tube and can be locked with an upper groove-shaped part of a folding connecting piece, the saddle is arranged above the seat tube, a front wheel is arranged on a front fork, the saddle is folded forwards, the saddle is connected with the front piece, a telescopic double-rotation type handlebar, the front fork and the front wheel and is folded towards the rear part of a middle beam, an iron sheet of the seat tube can be attracted by an upper magnet on the middle beam and is unfolded backwards, the saddle is connected with the front piece, the telescopic double-rotation type handlebar, the front fork and the front wheel and is unfolded towards the front part of the middle beam, the front connecting piece is locked with the front piece through locking quick-release of the locking connecting piece, and the folding connecting piece and the seat tube can be; the manual driving mechanism comprises a middle shaft, two cranks, a chain wheel, two pedals, a flywheel and a chain, the middle shaft is rotatably connected in the five-way pipe, the two cranks are arranged at the two ends of the middle shaft, the chain wheel is fixedly connected on the cranks on the right sides of the two cranks, the flywheel is connected with the rear wheel, and the chain is wound on the chain wheel and the flywheel; the electric power-assisted system comprises a motor, a battery, a controller, a control switch and a power-assisted sensor, wherein the motor is arranged on the rear wheel.

The invention has the beneficial effects that: the invention adopts a plurality of technical means, so that the bicycle body is not welded by electric welding, and represents a new trend of the manufacturing process of the bicycle; through the ingenious design, the magnetic folding positioning portable electric moped achieves the effects of quick folding speed and small volume after being folded; the invention adopts the latest form of the telescopic double-rotation type handlebar, so that the folding of the handlebar is simplest and most effective; the front piece, the middle beam and the seat tube are positioned on the left side, so that the folded rear wheel can be positioned on the right side surfaces of the front piece, the middle beam and the seat tube, and the rear fork piece can be attracted and positioned by the lower magnet of the middle beam; the folding seat tube, the connecting rod and the front piece are in linkage folding, so that the seat tube and the front piece are in linkage folding with the front wheel of the front fork, after the folding seat tube and the front piece are folded, the rectangular tube clamp connected with the lower seat tube is attracted by the upper magnet on the middle beam, a better positioning effect can be generated, and the seat tube, the front piece, the front fork and the front wheel are fixed together in a folded state; the front connecting piece and the front connecting piece can be locked and fixed by adopting the front connecting piece locking and quick dismounting, and the folding connecting piece and the seat tube can be fixed by adopting the clamping and quick dismounting; the invention adopts the mode that the shock absorbing piece is matched with the towing wheel frame, so that the magnetic folding positioning portable electric moped has the shock absorbing effect; the battery and the controller are arranged in the beam pipe, so that the aim of smartly reducing the space is fulfilled, and the appearance of the invention is more attractive.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a structural and expanded view of the telescopic dual-rotation type handlebar of the present invention;

FIG. 3 is a drawing of the telescopic dual rotating handlebar of the present invention;

FIG. 4 is a construction view of the front piece of the present invention;

FIG. 5 is a construction view of the front attachment of the present invention;

FIG. 6 is a construction view of a folding link of the present invention;

FIG. 7 is a structural view of the truck frame of the present invention;

FIG. 8 is a block diagram of the rear fork of the present invention;

FIG. 9 is a view showing the construction of the round saddle seat of the present invention;

FIG. 10 is a schematic view of the folding process of the present invention;

FIG. 11 is a folded view of the present invention;

in the figure: 1-telescopic double-rotation type handlebar, 21-front fork, 22-front piece, 3-middle beam, 41-folding connecting piece, 42-clamping quick-release, 5-towing wheel piece, 6-rear fork piece, 7-saddle, 81-front wheel, 82-rear wheel, 91-manpower driving mechanism, 92-electric power-assisted system; wherein flexible two rotation formula handlebar 1 still includes: 11-left handle, 12-right handle, 13-upper locking piece, 14-lower locking piece; upper lock 13 further includes: 131-handle base, 132-upper lock link; the center sill 3 further includes: 31-beam tube, 32-front connecting piece, 33-front connecting piece locking quick release, 24-upper magnetic attraction and 35-lower magnetic attraction; the rear fork 6 further comprises: 61-back fork piece, 62-five-way pipe, 63-shock absorbing piece; the seat 7 further includes: 71-seat tube, 72-locking piece, 73-connecting rod, 74-saddle.

The specific implementation mode is as follows:

referring to fig. 1, 2 and 8, the magnetic foldable positioning portable electric bicycle comprises a telescopic dual-rotation type handlebar 1, a front fork 21, a front piece 22, a center sill 3, a folding connecting piece 41, a clamping quick release 42, a towing wheel piece 5, a rear fork piece 6, a saddle 7, a front wheel 81, a rear wheel 82, a manual driving mechanism 91 and an electric power assisting system 92;

the telescopic double-rotation type handlebar 1 comprises a left handle 11, a right handle 12, an upper locking piece 13 and a lower locking piece 14, wherein the left handle 11 and the right handle 12 are both composed of a vertical handle and a horizontal handle pipe, the vertical handle is formed by connecting a vertical head and a vertical handle, the vertical head is an aluminum die casting piece, the vertical head is provided with an omega-shaped connector, the middle lower part of the vertical head is cylindrical, the top surface of the middle lower part of the vertical head is a concave inclined surface, a through hole is arranged on the front side of the vertical direction of a slit below the omega-shaped connector of the vertical head, a threaded hole is arranged on the rear side of the vertical direction of the slit below the omega-shaped connector of the vertical head, the threaded hole below the omega-shaped connector of the vertical head is longitudinally corresponding to the through hole below the omega-shaped connector of the vertical head, the cylindrical outer diameter of the concave inclined surface of the vertical head is larger than the outer diameter of the vertical handle, a cylinder is integrally connected with the cylindrical lower part of the concave inclined surface of the vertical head, the lower end of the vertical pipe is also provided with a bottom ring which is a metal ring in close fit with the vertical pipe.

The right part of the handle horizontal pipe of the left handle 11 is inserted into the connecting port with the omega shape of the handle vertical head of the left handle 11, a bolt is inserted into a through hole below the connecting port with the omega shape of the handle vertical head of the left handle 11, then the handle horizontal pipe is screwed into the threaded hole below the connecting port with the omega shape of the handle vertical head of the left handle 1 and screwed tightly, the connecting port with the omega shape of the handle vertical head of the left handle 11 is locked with the handle horizontal pipe of the left handle 11, the right end of the handle horizontal pipe of the left handle 11 is tightly sleeved with a locking ring, the left part of the handle horizontal pipe of the right handle 12 is inserted into the connecting port with the omega shape of the handle vertical head of the right handle 12, the bolt is inserted into the through hole below the connecting port with the omega shape of the handle vertical head of the right handle 12, then the threaded hole below the connecting port with the omega shape of the connecting port with the handle vertical head of the right handle 12 and screwed tightly, the connecting port with the omega shape of the handle, and a locking ring is tightly matched and sleeved at the left end of the transverse handle pipe of the right handle 12.

The upper locking member 13 comprises a handle base 131, two nylon bushings, an upper locking member 132, two locking rings and two positioning rings, wherein the handle base 131 is an aluminum die-casting or aluminum extrusion-type slicing workpiece, the left and right ends of the handle base 131 are respectively provided with an up-down slotted round hole, the slots of the left and right slotted round holes of the handle base 131 are opposite and corresponding, the slot of the slotted round hole at the left end of the handle base 131 is vertically provided with a longitudinal pair of through holes, the slot of the slotted round hole at the right end of the handle base 131 is vertically provided with a longitudinal pair of through holes, the longitudinal pair of through holes on the slot of the slotted round hole at the left end of the handle base 131 and the longitudinal pair of through holes on the slot of the slotted round hole at the right end of the handle base 131 are respectively provided with a pair of bolt nuts, the middle part of the handle base 131 is provided with a plurality of longitudinal holes, a nylon lining ring is respectively embedded in the slotted round hole at the left end of the handle base 131 and the slotted round hole at the right end of the handle base 131, the nylon lining rings are in a round tube shape, the outer diameters of the nylon lining rings correspond to the slotted round hole at the left end of the handle base 131 and the slotted round hole at the right end of the handle base 131, the inner diameters of the nylon lining rings correspond to the outer diameter of the left handle 1 and the outer diameter of the right handle 12 in a rotating mode, and the height of each nylon lining ring corresponds to the thickness of the handle base 31.

The upper connecting piece 132 comprises a U-shaped clamp and an upper quick-release piece, the U-shaped clamp comprises a J-shaped seat and a locking bolt, the J-shaped seat is an aluminum extruded cutting workpiece, the J-shaped seat is in a forward laid J shape, a transverse arc concave part is arranged at the front upper part of the J-shaped seat, a vertical through hole is arranged in the middle of the arc concave part of the J-shaped seat and is vertical to the arc concave part of the J-shaped seat, a forward convex rib is arranged in the middle of the J-shaped seat, a rotating shaft hole is transversely arranged on the forward convex rib of the J-shaped seat, a plurality of longitudinal holes are arranged below the J-shaped seat, the longitudinal holes below the J-shaped seat correspond to the longitudinal holes in the middle of the handle base 31, the longitudinal holes below the J-shaped seat are fixedly connected with the longitudinal holes in the middle of the handle base 31 through a plurality of bolt nuts, the locking bolt is composed of an aluminum piece and two connecting bolts, the bolt is an aluminum extruded cutting workpiece, the middle part of lock tongue shape aluminium alloy has bellied obtuse angle that makes progress, there is a vertical perforation spring bolt shape aluminium alloy's middle part is located bellied obtuse rear, spring bolt shape aluminium alloy's front end and rear end respectively have a horizontal riveting hole, the spring bolt connection piece is the metal punching sheet, respectively there is a round hole spring bolt connection piece's preceding well back, put two spring bolt connection pieces in spring bolt shape aluminium alloy's both sides, two rivets are fixed the riveting with the preceding round hole and the well round hole of two spring bolt connection pieces and the horizontal riveting hole of spring bolt shape aluminium alloy front end and the horizontal riveting hole of rear end, thereby make the lock tongue, make the back round hole of two spring bolt connection pieces and the horizontal pivot hole of J shape seat rotate with a pair of lock bolt and be connected, thereby make U-shaped folder.

The quick-release handle is rotationally connected with the ring head bolt through a rivet, the ring head bolt penetrates into the arc-shaped lining, the vertical through hole of the J-shaped seat, the locking piece spring and the vertical through hole of the bolt-tongue-shaped aluminum piece from top to bottom, then the locking nut is screwed with the lower end of the ring head bolt, the quick-release handle is turned upwards towards a rear lower plate, an obtuse angle formed by upward protrusions of the locking tongue of the U-shaped clamp can be enabled to be locked with the front side of a lower convex angle of the locking ring at the right end of the transverse pipe of the left handle 11, and the front side of a lower convex angle of the locking ring at the left end of the transverse pipe of the right handle 12, otherwise, the quick-release handle is turned upwards towards the front upper plate, the locking tongue of the U-shaped clamp can be enabled to be downward protruded to be unlocked with the locking ring at the lower convex angle of the right end of the transverse pipe of the left handle 11, and the locking ring is locked and connected with the lower convex angle of the locking ring at the left end of the handle transverse pipe of the right handle 12, the locking ring is an aluminum extruded section, the locking ring is a round part, a round hole which is matched and corresponds to the handle transverse pipe is arranged in the locking ring, the upper part and the lower part of the front part of the locking ring are respectively provided with an upper convex angle and a lower convex angle, the upper convex angle and the lower convex angle of the locking ring are obtuse angles, the upper convex angle and the lower convex angle of the locking ring and the periphery of the middle rear part of the locking ring form a U shape which is laid forwards, and the front side surface of the lower convex angle of the locking ring corresponds to the rear side surface of the upward convex obtuse angle of the locking tongue after locking.

The handle stem of the left handle 11 and the handle stem of the right handle 12 are respectively inserted into a nylon lining ring at the left end of the handle base 131 and a nylon lining ring at the right end of the handle base 131, the positioning ring is composed of a slotted ring and a pair of bolt nuts, the slotted ring is formed by cutting and processing an aluminum extruded section, a slot is formed in the side surface of the slotted ring, two protruding parts are arranged at two sides of the slot of the slotted ring, a pair of mutually opposite through holes vertical to the slot are formed in the two protruding parts of the slotted ring, a pair of bolt nuts are arranged in the mutually opposite through holes of the slotted ring, the two positioning rings are respectively sleeved on the handle stem of the left handle 11 and the handle stem of the right handle 12, the bolt nuts of the positioning rings are screwed, the two positioning rings are fixed on the handle stem of the left handle 11 and the handle stem of the right handle 12, and the two positioning rings are respectively located at the left end of the circular hole of the handle base 131 and the slotted hole of the handle base 131 and the positioning ring of the right handle base 131 And under the slotted round hole at the right end, a bolt nut in a longitudinal mutual through hole at the left end of the handle base 131 and a bolt nut in a longitudinal mutual through hole at the right end are screwed, and the slotted round hole at the left end and the slotted round hole at the right end of the handle base 131 are clamped to the handle vertical pipe of the left handle 11 and the handle vertical pipe of the right handle 12 in a rotatable but non-loose fit manner.

The lower lock 14 is composed of a lower clamp, a lower quick release and a front axle tube, the lower clamp is an extruded aluminum cut-off workpiece, and can also be an aluminum forging or aluminum die casting, the left front end and the right front end of the lower clamp are respectively provided with a vertical slotted round hole, the slot of the slotted round hole at the left front end of the lower clamp faces forward, the slot of the slotted round hole at the right front end of the lower clamp faces forward, the left side of the slotted round hole at the left front end of the lower clamp is provided with a forward left convex sheet, the left side of the left convex sheet of the lower clamp is arc concave, the right side of the slotted round hole at the right front end of the lower clamp is provided with a forward right convex sheet, the middle of the front part of the lower clamp is provided with a forward convex sheet, a mutual transverse through hole is arranged among the left convex sheet of the lower clamp, the convex sheet of the lower clamp and the right convex sheet of the lower clamp, the middle part of the, the rear end of the right side of the lower clamping piece is provided with a vertical round hole, the vertical round hole at the rear end of the right side of the lower clamping piece is transversely corresponding to the vertical round hole at the middle part of the left side of the lower clamping piece, the rear end of the left side of the lower clamping piece is provided with a vertical slotted round hole, the slot of the slotted round hole at the rear end of the left side of the lower clamping piece faces towards the rear, two sides of the slot of the lower clamping piece facing towards the rear are respectively provided with a backward connecting edge, the upper part and the lower part of the two backward connecting edges of the lower clamping piece are respectively provided with a pair of mutual transverse through holes, the upper part and the lower part of the two pairs of mutual transverse through holes of the lower clamping piece are respectively provided with a pair of bolt nuts, the front shaft tube penetrates into the slotted round hole at the rear end of the left side of the lower clamping piece and is screwed with the bolt nuts in the lower pair of, the axle tube is formed by turning a counter bore on the upper end and the lower end of a tube hole of a round tube respectively, a bearing is embedded in each counter bore on the upper end and the lower end of the axle tube, and a round hole in the middle of the left side of the lower clamping piece and a round hole in the rear end of the right side of the lower clamping piece are in close fit correspondence with the two front fork rods of the front fork 2.

The quick release device comprises a lower clamping piece, a left lug, a convex block and a right lug, wherein a transverse through hole is formed between the left lug and the convex block and is used for mounting the lower quick release part, the lower quick release part comprises a quick release handle, a ring head bolt, an arc-shaped gasket, two quick release springs, two nuts and a magnetic suction part, the magnetic suction part consists of a bowl-shaped punching part and a strong magnet, the inner side surface of the bowl-shaped punching part is lined with a plastic ring, the strong magnet is in a ring shape and is placed in the plastic ring in the bowl-shaped punching part, a flat base bolt penetrates through the strong magnet and the bowl-shaped punching part and is screwed on the forward lug of the lower clamping piece, the quick release handle is a part with two parallel heads which is integrally connected with one end of a trigger handle, the quick release handle is rotationally connected with the ring head bolt through a rivet, a flat head knurled bolt is screwed on the middle part of the quick release handle, the flat head of the flat head knurled bolt corresponds to, the arc of the arc gasket corresponds to the arc concave shape on the left side of the left lug of the lower clamping piece, a ring head bolt penetrates through the arc gasket, the hole of the left lug of the lower clamping piece, a quick-release spring, the hole of the lug of the lower clamping piece, the hole of the other quick-release spring and the hole of the right lug of the lower clamping piece, two nuts are oppositely screwed and positioned, a quick-release handle is pulled to tighten the slotted hole on the front part of the left side of the lower clamping piece and the slotted hole on the front part of the right side of the lower clamping piece, then the lower clamping piece is tightened to the handle pipe of the left handle 11 positioned in the slotted hole on the left end of the lower clamping piece and the handle pipe of the right handle 12 positioned in the slotted hole on the right end of the lower clamping piece, and the locked flat head bolt on the quick-release handle and the magnetic attraction piece on the lug of the lower clamping.

The handle vertical pipe of the left handle 11 and the handle vertical pipe of the right handle 12 respectively penetrate into the slotted round hole at the left front end of the lower clamping piece and the slotted round hole at the right front end of the lower clamping piece, and two bottom rings are respectively tightly sleeved at the bottom end of the handle vertical pipe of the left handle 11 and the bottom end of the handle vertical pipe of the right handle 12 in a matching manner and are sleeved at the bottom ring at the bottom end of the handle vertical pipe of the left handle 11 and the bottom ring at the bottom end of the handle vertical pipe of the right handle 12 to serve as limiting positions for upward twitching when the handle vertical pipe of the left handle 11 and the handle vertical pipe of the right handle 12 are unfolded.

The front fork 21 is composed of a left front fork rod and a right front fork rod, the left front fork rod and the right front fork rod are all made of aluminum round tubes, the lower end of the left front fork rod and the lower end of the right front fork rod are both provided with flattening parts, ∩ -shaped openings are formed in the flattening parts of the lower end of the left front fork rod and the lower end of the right front fork rod, the upper end of the left front fork rod is tightly matched and sleeved with a vertical round hole in the middle of a lower clamping piece and reinforced by a pin, and the upper end of the right front fork rod is tightly matched and sleeved with a vertical round hole in the rear end of the right side and reinforced by a pin.

The front part 22 is an aluminum extruded section workpiece, and can also be an aluminum forging part or an aluminum die casting part, the front end of the front piece 22 is of a groove shape, the upper side and the lower side of the groove shape of the front piece 22 are provided with a pair of mutually opposite through holes, the front ends of the upper side and the lower side of the groove shape of the front piece 22 are round corners, a backward extending part is arranged above the rear part of the front piece 22, a transverse hole is arranged on the backward extending part of the front piece 22, a transverse hole is arranged on the lower back corner of the front piece 22, a U-shaped gap with a backward opening is arranged above the transverse hole at the rear lower corner of the front piece 22 and in a position which is positioned at the front lower part of the backward extending part of the front piece 22, the transverse hole of the rearward extension of the front piece 22 is located rearwardly above the transverse hole of the lower rear corner of the front piece 22, a pair of mutual opposite through holes at the upper side and the lower side of the groove shape of the front piece 22 are connected with two bearings in the front axle tube through opposite locking bolts.

The middle beam 3 comprises a beam tube 31, a front connecting piece 32, a front connecting piece locking quick release 33, an upper magnetic attraction 34 and a lower magnetic attraction 35, wherein the beam tube 31 is made of a rectangular tube, the upper side and the lower side of the front end part of the beam tube 31 are respectively provided with a vertical threaded hole, the front connecting piece 32 is an aluminum die casting piece, the front part of the front connecting piece 32 is a groove-shaped part with a forward opening, the upper end part and the lower end part of the left side surface and the right side surface of the groove-shaped part of the front connecting piece 32 are respectively provided with a pair of transverse through holes, the left side of the rear side surface of the upper end part of the groove-shaped part of the front connecting piece 32 is provided with a vertical slotted notch, the inner width of the groove-shaped part of the front connecting piece 32 corresponds to the width of the backward extending part of the front piece 22, the rear part of the front connecting piece 32 is a rectangular tube-shaped part, the size of the tube-shaped part of the front connecting piece 32 closely corresponds to the size of the tube hole of the beam tube 31, and the tube-shaped, The quick release handle is rotationally connected with the ring head bolt through a rivet, the front connecting piece screw barrel is formed by integrally connecting one end of a round rod with a semicircular bolt head and opening an axial threaded hole at the endpoint of the other end of the round rod, the front connecting piece screw barrel penetrates into a pair of mutually transverse pair of through holes at the upper end part of the groove-shaped part of the front connecting piece 32 from right to left, the ring head bolt penetrates into the quick release liner from left to right and is screwed into the threaded hole of the front connecting piece screw barrel, the quick release handle of the front connecting piece locking quick release 33 is turned towards a lower plate, and the upper end of the groove-shaped part of the front connecting piece 32 can be clamped with the backward extending part of the front piece 22.

The upper magnetic attraction 34 and the lower magnetic attraction 35 are both formed by a bowl-shaped punching part and a strong magnet, the inner side surface of the bowl-shaped punching part is lined with a plastic ring, the strong magnet is in a ring shape and is placed in the plastic ring in the bowl-shaped punching part to form the upper magnetic attraction 34 and the lower magnetic attraction 35, a flat base bolt penetrates the upper magnetic attraction 34 and the bowl-shaped punching part and is screwed in a vertical threaded hole in the upper side surface of the front end part of the beam tube 31 to fixedly connect the upper magnetic attraction 34 with the upper side surface of the front end part of the beam tube 31, a flat base bolt penetrates the lower magnetic attraction 35 and the bowl-shaped punching part and is screwed in a vertical threaded hole in the lower side surface of the front end part of the beam tube 31 to fixedly connect the lower magnetic attraction 35 and the lower side surface of the front end part of the beam tube 31, a pair of mutually transverse through holes in the lower end part of the groove-shaped part of the front connecting part 32 are rotatably connected with a transverse hole behind the front part 22 through interlocking bolts, after the front piece 22 is connected with the front connecting piece 32, a front connecting piece barrel of the front connecting piece locking quick release 33 corresponds to a U-shaped opening with a backward opening of the front piece 22, the folding connecting piece 41 is sleeved at the middle rear part of the beam tube 31, the rear end of the beam tube 31 is tightly sleeved on the tug piece 5, a battery and a controller are placed in a tube hole of the beam tube 31, and a beam tube sealing cover is also arranged at the rear end of the tube hole of the beam tube 31.

The folding connecting piece 41 is an aluminum die casting or aluminum forging, the left upper part of the folding connecting piece 41 is provided with an upper groove-shaped part with a forward opening, the front lower part of the upper groove-shaped part of the folding connecting piece 41 is provided with a pair of mutually transverse through holes, the left middle part of the folding connecting piece 41 is provided with a longitudinal rectangular slotted hole, the lower part of the rectangular slotted hole of the folding connecting piece 41 is provided with a longitudinal slit, the front end part above the rectangular slotted hole of the folding connecting piece 41 is provided with a longitudinal slit notch, the vertical direction of the longitudinal slit of the folding connecting piece 41 is provided with two pairs of mutually transverse through holes, two bolts penetrate into the two pairs of mutually transverse through holes of the folding connecting piece 41 and are screwed with two nuts, the longitudinal slit of the folding connecting piece 41 is tightened, the folding connecting piece 41 is fixed at the middle rear part of the beam tube 31, the right lower part of the folding connecting piece 41 is provided with a downward groove-shaped part with an opening, two sides of the lower groove-shaped part of the folding connecting piece 41 are provided with a pair of mutual transverse through holes, the mutual transverse through holes of the upper groove-shaped part of the folding connecting piece 41 are rotatably connected with a seat tube 71 of the saddle 7 through a clamping quick release 42, and the mutual transverse through holes of the two sides of the lower groove-shaped part of the folding connecting piece 41 are rotatably connected with the rear fork 6 through two pairs of bolts and nuts.

The quick-release clamping handle 42 is composed of a quick-release handle, a collar head bolt, a clamping lining and a locknut, the quick-release handle is rotationally connected with the collar head bolt through a rivet, the collar head bolt penetrates into the clamping lining from left to right, a pair of mutual transverse opposite through holes of the upper groove-shaped part of the folding connecting piece 41 and the next transverse opposite through hole of the lower end part of the seat pipe 71, then the locknut is screwed with the right end of the collar head bolt, the quick-release handle of the quick-release clamping handle 42 is tightened, and the upper groove-shaped part of the folding connecting piece 41 and the lower end part of the seat pipe 71 can be clamped.

The towing piece 5 consists of a towing wheel frame, two-head bolts, three liner tubes and two PU wheels, the towing wheel frame is formed by cutting and processing an aluminum extrusion, the left side and the right side of the towing wheel frame are respectively provided with a longitudinal rectangular hole, a pair of ear-shaped vertical edges are arranged above the right rectangular hole of the towing wheel frame, a pair of transverse through holes are arranged on the pair of ear-shaped vertical edges of the towing wheel frame, a vertical elastic connection hole is arranged below the right rectangular hole of the towing wheel frame, a liner tube is corresponding to the pair of transverse through holes between the pair of ear-shaped vertical edges of the towing wheel frame, the two bolts penetrate into the pair of transverse through holes of the towing wheel frame and the liner tube, and then the two liner tubes are respectively sleeved at two ends of the two bolts, two ends of the two bolts are exposed, the two PU wheels are respectively sleeved at two ends of the two bolts and are exposed, and the two PU wheels are screwed at two ends of the two bolts by using locknuts, so that the dragging piece 5 is formed.

The rear fork piece 6 comprises two rear fork pieces 61, a five-way pipe 62 and a shock absorbing piece 63, wherein the two rear fork pieces 61 are formed by punching aluminum sheets, the front end parts of the two rear fork pieces 61 are respectively provided with a connecting hole, the connecting hole at the front end parts of the two rear fork pieces 61 is connected with two sides of the lower groove-shaped part of the folding connecting piece 41, the front parts of the two rear fork pieces 61 are respectively provided with a round hole which is tightly matched and corresponding to the diameter of the five-way pipe 62, the middle parts of the two rear fork pieces 61 are respectively provided with two holes, the rear ends of the two rear fork pieces 61 are respectively provided with a backward U-shaped groove, the lower part of the rear end of the right rear fork piece in the two rear fork pieces 61 is also connected with an iron punching piece, when the two rear fork pieces 61 are folded downwards and forwards, the iron punching piece is attracted with the lower magnetic attraction 35, the five-way pipe 62 is connected in the round holes of the two rear fork pieces, the shock absorbing piece 63 is connected above the middle parts of the two rear fork pieces 61, and the shock, The shock absorbing frame is formed by punching an aluminum sheet into right-angled folded edges with the left side and the right side facing downwards, the two right-angled folded edges of the shock absorbing frame are respectively riveted with the middle parts of the two rear fork pieces 61, the shock absorbing frame is provided with a front vertical hole, a middle vertical hole and a rear vertical hole, the shock absorbing block is made of polyurethane and is in a rectangular block shape, the front part and the rear part of the shock absorbing block are respectively provided with a vertical connecting hole, the upper part of the connecting hole of the shock absorbing block is a through hole with a counter bore penetrating through the lower part, a vertical hole is arranged between the two vertical connecting holes of the shock absorbing block, the vertical hole of the shock absorbing block is a through hole with a counter bore penetrating through the upper part, the elastic connecting piece is composed of a flat base bolt, two nuts and a screw steel ball, the flat base bolt of the elastic connecting piece penetrates into the middle vertical hole of the shock absorbing frame from bottom to top, the two nuts are screwed with the flat base bolt, so, and then screw steel balls are screwed on the flat base bolts, two connecting holes of the shock absorption block are connected with the front vertical hole and the rear vertical hole of the shock absorption frame through locking bolts, and the screw steel balls of the elastic connecting piece on the shock absorption piece 63 and the elastic connecting holes of the dragging piece 5 are staggered front and back.

The saddle 7 comprises a seat tube 71, a locking piece 72, a connecting rod 73 and a saddle 74, wherein the seat tube 71 comprises a lower seat tube, an upper seat tube and a round saddle tube, the lower seat tube is made of a rectangular tube, the upper part, the middle part and the lower part of the left side surface and the right side surface of the lower end part of the lower seat tube are respectively provided with a transverse through hole, the rear side surface of the through hole positioned in the middle transverse direction of the lower seat tube is provided with a rectangular hole, a modified nylon lining piece is tightly sleeved in a tube hole of the lower end part of the lower seat tube, the hole position of the modified nylon lining piece corresponds to the hole position of the lower end part of the lower seat tube, the rear side of the top of the lower seat tube is provided with a vertical slot, the top of the lower seat tube is further sleeved with a rectangular tube clamp, the rectangular tube clamp is punched into a curve-shaped outline by a strip-shaped iron sheet, a mutual through hole is formed in the opening of the curve-shaped outline, and then a bolt nut or a quick-release nut, the upper seat tube is composed of a rectangular tube and a round saddle tube seat, the rectangular tube of the upper seat tube corresponds to the rectangular tube hole of the lower seat tube in a sliding mode, the round saddle tube seat is formed by aluminum die casting or aluminum extrusion processing, the lower end of the round saddle tube seat is fixed with the upper tube hole of the rectangular tube of the upper seat tube, the upper end of the round saddle tube seat is connected with a tube clamp of the round saddle tube, the tube clamp of the round saddle tube seat can be fixedly connected with the round saddle tube, the lower transverse opposite through hole of the lower end part of the lower seat tube is rotatably connected with the transverse opposite through hole of the upper groove part of the folding connecting piece 41 through the clamping quick release 42, the middle transverse through hole of the lower end part of the rectangular seat tube is connected with the ring shape of the hook piece of the locking piece 72 through an opposite locking bolt, the locking piece 72 is composed of a hook piece and a tension spring, the hook piece is a metal piece with the ring shape at the front end and the hook shape at the rear end, the hook shape of, a transverse hole is arranged in the front of the hook-shaped part, the transverse hole in the front of the hook-shaped part is positioned in a pipe hole at the lower end part of the lower seat pipe, one end of a tension spring is connected with the transverse hole of the hook-shaped part, one end of the tension spring is connected with a locking bolt penetrating into a lower transverse through hole at the lower end part of the lower seat pipe, the hook shape of the hook-shaped part can be locked with the upper edge of the rear side surface of the upper groove-shaped part of the folding connecting piece 41 under the action of the tension spring, the rear end of the connecting rod 73 penetrates into the upper transverse through hole at the lower end part of the lower seat pipe from left to right and is screwed into a threaded hole at the right side of the rear end of the connecting rod 73 for positioning, the connecting rod 73 is a part bent at a right angle from left to right by pressing the front and rear ends of a metal round steel, threaded holes are respectively arranged at two end, and the saddle 74 is connected to the round saddle pipe by screwing the connecting rod 73 into a threaded hole on the right side of the front end of the connecting rod for positioning, and when the saddle 7 is folded forwards, the rectangular pipe clamp at the top of the lower saddle pipe can be sucked with the upper magnet 34 of the middle beam 3.

The front wheel 81 is an 8-inch wheel, two ends of a wheel shaft of the front wheel 81 are mounted in ∩ -shaped openings of the two front fork rods through matching of nuts, the rear wheel 82 is a 10-inch wheel hub motor wheel, and two ends of a wheel shaft of the rear wheel 82 are fixedly connected in U-shaped openings of the two rear fork blades 61 through matching of nuts.

The manual driving mechanism 91 comprises a middle shaft, two cranks, a chain wheel, two pedals, a flywheel and a chain, wherein the middle shaft is connected in the five-way pipe through a middle shaft accessory, the two cranks are arranged at two ends of the middle shaft, the chain wheel is fixedly connected to the right cranks of the two cranks, the two pedals are respectively connected to the two cranks, the flywheel is connected to the right side of the rear wheel 82, and the chain is wound on the chain wheel and the flywheel.

The electric drive system 92 includes: the device comprises a hub motor, a battery, a controller, a control switch and a power assisting sensor, wherein the motor is a brushless hub motor, the motor is integrally configured and combined with the hub of the rear wheel 82, the battery is a lithium battery pack connected in series, the controller is a brushless motor controller, the battery and the controller are both arranged in the beam tube 31, the control switch comprises a power-off brake handle and a power control lock, the power control lock is arranged on the side surface of the beam tube 31, the power-off brake handle is arranged on the left handle 11 and the right handle 12, the power-assisted sensor is arranged at the joint of the middle shaft and the chain wheel, the power supply controls the lock, the power-off brake handle and the power-assisted sensor, the controller is connected with the battery and the rear wheel 82 through connecting wires and connectors.

Claims

1. The utility model provides a portable electric bicycle of location is folded to magnetism, includes flexible dual rotary formula handlebar, front fork, front part, well roof beam, folding even piece, presss from both sides tight quick detach, tow wheel spare, back fork spare, saddle, front wheel, rear wheel, manpower actuating mechanism and electronic helping hand system, characterized by: the telescopic double-rotation type handlebar comprises a left handle, a right handle, an upper locking piece and a lower locking piece, wherein the left handle and the right handle are both composed of a vertical handlebar tube and a horizontal handlebar tube, the vertical handlebar tube is formed by connecting a vertical handlebar head and a vertical handlebar tube, the vertical handlebar head is connected to the top end of the vertical handlebar tube, an omega-shaped connector is arranged on the vertical handlebar head, the vertical handlebar head is connected with the horizontal handlebar tube through the omega-shaped connector, the right end of the horizontal handlebar tube of the left handle and the left end of the horizontal handlebar tube of the right handle are respectively sleeved with a locking ring, and the vertical handlebar tube further comprises a bottom ring; the upper lock piece comprises a handle base, two nylon lining rings, an upper lock connecting piece, two lock connecting rings and two positioning rings, wherein the left end and the right end of the handle base are respectively provided with an upward and downward slotted round hole, a slot of the slotted round hole at the left end of the handle base is opposite to a slot of the slotted round hole at the right end, a longitudinal mutual opposite penetrating hole is formed in the vertical direction of the slot of the slotted round hole at the left end of the handle base, a longitudinal mutual opposite penetrating hole is formed in the vertical direction of the slot of the slotted round hole at the right end of the handle base, the longitudinal mutual opposite penetrating hole on the slot of the slotted round hole at the left end of the handle base and the longitudinal mutual opposite penetrating hole on the slot of the slotted round hole at the right end of the handle base are respectively provided with a pair of bolt and nuts, a nylon is respectively embedded in the slotted round hole at the left end and the slotted round hole at the right end of the handle base, the lining ring locking piece comprises a U-shaped clamp, the U-shaped clamp is formed by connecting a J-shaped seat and a locking tongue, the J-shaped seat is connected with the middle part of the handle base through a bolt, an upper quick-release part is connected with the J-shaped seat and the locking tongue, the U-shaped clamp formed by the J-shaped seat and the locking tongue can be tightened by the upper quick-release part, a locking ring at the right end of the horizontal tube of the left handle and a locking ring at the left end of the horizontal tube of the right handle are locked by the U-shaped clamp after being unfolded, a vertical tube of the left handle and a vertical tube of the right handle are connected in nylon lining rings at the left end and the right end of the handle base, a pair of bolts and nuts in a longitudinal pair of through holes on a slit of the slit round hole at the left end of the handle base are screwed, the handle base is provided with a slotted round hole at the right end, and the slotted round hole at the left end and the slotted round hole at the right end are tightly clamped to the handle vertical pipe of the left handle and the handle vertical pipe of the right handle, which can rotate but are not loosened to be proper; the lower locking piece consists of a lower clamping piece and a lower quick release part, wherein the left front end and the right front end of the lower clamping piece are respectively provided with an up-down slotted round hole, the slot of the slotted round hole at the left front end of the lower clamping piece faces the front, the slot of the slotted round hole at the right front end of the lower clamping piece faces the front, the left side of the slot of the slotted round hole at the left front end of the lower clamping piece is provided with a forward left lug, the right side of the slot of the slotted round hole at the right front end of the lower clamping piece is provided with a forward right lug, the middle part of the lower clamping piece is provided with a forward convex block, a mutual transverse through hole is arranged among the left lug, the convex block and the right lug of the lower clamping piece, the middle part of the left side of the lower clamping piece is provided with a vertical round hole, the slotted round hole at the left rear end of the lower clamping piece is fixedly connected with the front shaft tube, the rear end of the right side of the, the left handle and the right handle penetrate through vertical round holes at the left front end and the right front end of the lower clamp, two bottom rings are fixedly sleeved at the bottom end of a handle vertical pipe of the left handle and the bottom end of a handle vertical pipe of the right handle respectively, the lower quick-release device is arranged in a transverse through hole formed by a left lug, a convex block and a right lug of the lower clamp, the lower quick-release device can tighten a slotted round hole at the left end of the lower clamp and a slotted round hole at the right end of the lower clamp, the left handle and the right handle in the lower clamp are fixed, and a front shaft tube is further arranged in a vertical round hole at the rear end of the lower clamp; the front end of the front part is rotationally connected with a front axle tube, the front end of the middle beam is rotationally connected with the front part, the middle beam comprises a beam tube, a front connecting part locking quick release, an upper magnetic attraction and a lower magnetic attraction, the front connecting part, the upper magnetic attraction and the lower magnetic attraction are respectively arranged at the front end part of the beam tube, the front connecting part locking quick release is arranged at the upper end part of the front connecting part, the middle rear part of the beam tube is sleeved with a folding connecting part, the rear end of the beam tube is sleeved with a towing wheel part, a battery and a controller are arranged in a tube hole of the beam tube, the left upper part of the folding connecting part is provided with an upper groove part with a forward opening, the left middle part is provided with a longitudinal rectangular slotted hole, the right lower part is provided with a part with a lower groove part with a downward opening, a pair of transverse through holes are arranged at the front lower part of the upper groove part of the folding connecting part, the lower end parts at both sides of the lower groove part of the folding connecting part are provided, a pair of transverse through holes on two sides of the lower groove-shaped part of the folding connecting piece are rotatably connected with the rear fork piece through two pairs of bolts and nuts; the rear fork piece is composed of two rear fork pieces, a five-way pipe and a shock absorbing piece, the five-way pipe is connected to the front parts of the two rear fork pieces, the shock absorbing piece is connected to the upper part of the middle parts of the two rear fork pieces, the shock absorbing piece comprises a shock absorbing frame, a shock absorbing block and an elastic connecting piece, the shock absorbing block is abutted to a towing wheel frame of the towing wheel piece to generate a shock absorbing effect, the rear ends of the two rear fork pieces are connected with rear wheels, the rear fork piece can be folded downwards and forwards, and after the rear fork piece is folded, the rear end of the rear fork piece on the right side of the rear fork piece can be attracted and absorbed by; the saddle comprises a seat tube, a locking piece, a connecting rod and a saddle, wherein the connecting rod is rotationally connected with the seat tube and a front piece, the locking piece is arranged at the lower end part of the seat tube and can be locked with an upper groove-shaped part of a folding connecting piece, the saddle is arranged above the seat tube, a front wheel is arranged on a front fork, the saddle is folded forwards, the saddle is connected with the front piece, a telescopic double-rotation type handlebar, the front fork and the front wheel and is folded towards the rear part of a middle beam, an iron sheet of the seat tube can be attracted by an upper magnet on the middle beam and is unfolded backwards, the saddle is connected with the front piece, the telescopic double-rotation type handlebar, the front fork and the front wheel and is unfolded towards the front part of the middle beam, the front connecting piece is locked with the front piece through locking quick-release of the locking connecting piece, and the folding connecting piece and the seat tube can be; the manual driving mechanism comprises a middle shaft, two cranks, a chain wheel, two pedals, a flywheel and a chain, the middle shaft is rotatably connected in the five-way pipe, the two cranks are arranged at the two ends of the middle shaft, the chain wheel is fixedly connected on the cranks on the right sides of the two cranks, the flywheel is connected with the rear wheel, and the chain is wound on the chain wheel and the flywheel; the electric power-assisted system comprises a motor, a battery, a controller, a control switch and a power-assisted sensor, wherein the motor is arranged on the rear wheel.

2. The magnetically foldable and positionable portable electric scooter of claim 1, wherein: the J-shaped seat is in a forward laid J shape, the locking connection tongue consists of a lock tongue-shaped aluminum piece and two lock tongue connection pieces, the middle part of the lock tongue-shaped aluminum piece is provided with an obtuse angle which protrudes upwards, the middle part of the lock tongue-shaped aluminum piece is provided with a vertical perforation which is positioned behind the protruding obtuse angle, the two lock tongue connection pieces are placed on two sides of the lock tongue-shaped aluminum piece, two rivets are used for fixedly riveting the front round hole and the middle round hole of the two lock tongue connection pieces, the transverse riveting hole at the front end of the lock tongue-shaped aluminum piece and the transverse riveting hole at the rear end of, thereby manufacturing a locking bolt, rotationally connecting the rear round holes of the two bolt connecting sheets with the transverse rotating shaft hole of the J-shaped seat by a pair of locking bolts, the quick-release handle is rotationally connected with the ring head bolt through riveting, the ring head bolt penetrates into the arc-shaped gasket, the vertical through hole of the J-shaped seat, the lock connecting piece spring and the vertical through hole of the lock connecting tongue from top to bottom, and then the lock nut is screwed with the lower end of the ring head bolt.

3. The magnetically foldable and positionable portable electric scooter of claim 1, wherein: the lock connecting ring is a round part, the upper part and the lower part of the front part of the lock connecting ring are respectively provided with an upper convex angle and a lower convex angle, the upper convex angle and the lower convex angle of the lock connecting ring and the periphery of the middle rear part of the lock connecting ring form a U shape which is laid forwards, and the front side surface of the lower convex angle of the lock connecting ring corresponds to the rear side surface of an upward convex obtuse angle of the lock connecting tongue after locking.

4. The magnetically foldable and positionable portable electric scooter of claim 1, wherein: the lower quick release comprises a quick release handle, a ring head bolt, an arc-shaped gasket, two quick release springs, two nuts and a magnetic suction piece, wherein a flat-head knurled bolt is screwed in the middle of the quick release handle, and the locked flat-head knurled bolt on the quick release handle and the magnetic suction piece on the convex block of the lower clamping piece are mutually sucked.

5. The magnetically foldable and positionable portable electric scooter of claim 1, wherein: a backward extending part is arranged above the rear part of the front piece, a transverse hole is arranged on the backward extending part of the front piece, a transverse hole is arranged at the rear lower corner of the front piece, a U-shaped notch with a backward opening is arranged above the transverse hole at the rear lower corner of the front piece and in a position which is deviated from the front position of the backward extending part of the front piece, and the transverse hole of the backward extending part of the front piece is arranged above the rear lower corner of the front piece.

6. The magnetically foldable and positionable portable electric scooter of claim 1, wherein: the quick-release connecting piece is characterized in that a pair of transverse through holes are respectively formed in the upper end portion and the lower end portion of the left side face and the right side face of the groove-shaped portion of the front connecting piece, a vertical slotted opening is formed in the left side of the rear side face of the upper end portion of the groove-shaped portion of the front connecting piece, the rear portion of the front connecting piece is a rectangular pipe-shaped pipe portion, the pipe-shaped portion of the front connecting piece is pressed into a pipe hole in the front end of a beam pipe and is riveted and reinforced by a rivet, a front connecting piece screw cylinder penetrates into a pair of transverse through holes in the upper end portion of the groove-shaped portion of the front connecting piece from right to left, a ring head bolt penetrates into a quick-release lining from left to right and is screwed into a threaded hole of the front connecting piece screw cylinder, the quick-release handle of the front connecting piece is locked to a lower plate, the upper end of the groove-shaped portion of the front connecting piece can be clamped with a backward extending portion of the front piece.

7. The magnetically foldable and positionable portable electric scooter of claim 1, wherein: the connecting holes at the front end parts of the two back fork pieces are connected with two sides of the lower groove-shaped part of the folding connecting piece, the front parts of the two back fork pieces are respectively provided with a round hole which is in close fit with the diameter of the five-way pipe, the lower part of the rear end of the right back fork piece in the two back fork pieces is also connected with an iron punching piece, the shock absorbing piece is connected above the middle parts of the two back fork pieces, the shock absorbing piece comprises a shock absorbing frame, a shock absorbing block and an elastic connecting piece, the shock absorbing frame is provided with three vertical holes in the front, the middle and the rear, the shock absorbing block is made of polyurethane, the shock absorbing block is in a rectangular block shape, the front and the rear parts of the shock absorbing block are respectively provided with a vertical connecting hole, the elastic connecting piece comprises a flat base bolt, two nuts and a screw steel ball, the flat base bolt of the elastic connecting piece penetrates into the vertical hole in the shock absorbing frame from bottom to top, the two nuts are screwed with the flat base bolt, the vertical hole of the shock, two connecting holes of the shock absorbing block are connected with the front vertical hole and the rear vertical hole of the shock absorbing frame through a pair of locking bolts, and screw steel balls of the elastic connecting piece on the shock absorbing piece and the elastic connecting holes of the dragging piece are staggered front and back.

8. The magnetically foldable and positionable portable electric scooter of claim 1, wherein: the seat tube comprises a lower seat tube, an upper seat tube and a round saddle tube, wherein the upper part, the middle part and the lower part of the left side surface and the right side surface of the lower end part of the lower seat tube are respectively provided with a transverse through hole, the rear side surface of the lower seat tube, which is positioned in the middle transverse through hole, is provided with a rectangular hole, a modified nylon lining part is tightly sleeved in a tube hole of the lower end part of the lower seat tube, the hole position of the modified nylon lining part corresponds to the hole position of the lower end part of the lower seat tube, the rear side of the top part of the lower seat tube is provided with a vertical slot, the top part of the lower seat tube also comprises a sleeved rectangular tube clamp, the rectangular tube clamp is punched into a curved profile by a strip-shaped iron sheet, the opening part of the curved profile is provided with a mutual through hole, then the top part of the curved profile is matched with a bolt and a nut or is quickly disassembled to lock the rectangular tube clamp on the top part of the lower seat tube, the upper seat tube comprises a rectangular tube and a rectangular tube, the upper end of the round saddle pipe seat is connected with a pipe clamp of the round saddle pipe, and the pipe clamp of the round saddle pipe seat can be fixedly connected with the round saddle pipe.

9. The magnetically foldable and positionable portable electric scooter of claim 1, wherein: the well horizontal perforation of rectangle seat pipe lower tip is through locking bolted connection the circle shape of locking piece hook-shaped spare, the locking piece comprises hook-shaped spare and extension spring, and hook-shaped spare is that the front end is circle shape, rear end are hooked shape metal part, and hook-shaped of hook-shaped spare is decurrent lock tongue, and hook-shaped of hook-shaped spare is worn out the rectangular hole of rectangle seat pipe lower tip trailing flank, hook-shaped place ahead have a horizontal hole, and the horizontal hole in hook-shaped place ahead of hook-shaped spare is located in the tube hole of lower seat pipe lower tip, the horizontal hole in hook-shaped spare is connected to the one end of extension spring, and the one end of extension spring is connected in penetrating the lower horizontal perforation of lower seat pipe lower tip to the lock bolt, hook-shaped of hook-shaped spare under the effect of extension spring can with the last border lock joint of folding joint upper.

10. The magnetically foldable and positionable portable electric scooter of claim 1, wherein: the motor and the hub of the rear wheel are integrally configured and combined, the control switch comprises a power-off brake handle and a power control lock, the power control lock is installed on the side surface of the beam tube, the power-off brake handle is installed on the left handle and the right handle, and the power-assisted sensor is installed at the joint of the middle shaft and the chain wheel.