CN104527886B - Six link rod quick-folding formula portable bicycles - Google Patents

Abstract

A kind of six link rod quick-folding formula portable bicycles, bicycle beam is folded including six link rods, front head tube, seat pipe, saddle, front fork, back vent, five connecting pipes, five lead to, V-shaped folding hand handle, front-wheel, trailing wheel and drive mechanism, six link rods fold bicycle beam includes front foldable base, foldable base afterwards, front-axle beam pipe, back rest pipe, rotating vane, flute profile folded piece, connecting seat, bicycle beam latch hook, front rod and back link, six link rods fold bicycle beam and are connected to front head tube and seat pipe, seat pipe welding back vent and five connecting pipes, five connecting pipes connection five is led to, back vent installs trailing wheel, head tube and front-wheel before front fork connection, saddle is installed on seat pipe, V-shaped folding hand handle is connected with front wheel carrier, drive mechanism includes axis, crank, chain wheel, foot is pedaled, flywheel and chain, drive mechanism is connected to the Five-way tube and trailing wheel of front wheel carrier.

Description

Six link rod quick-folding formula portable bicycles

Technical field

The present invention relates to a kind of folding portable bicycle, more particularly to a kind of six link rods quick-folding formula is portable voluntarily Car.

Background technology

Several money folding bicycles of the design people's previous design, although have the folding that folding rate is fast, fold smaller Portable bicycle, but due to reasons such as structure and constructions, be also the failure to reach promising result as little as possible after folding.

Content of the invention

The invention aims to providing the six link rod quick-folding formula portable bicycles that a kind of bicycle beam is that six link rods are folded. The object of the present invention is achieved like this；Six link rod quick-folding formula portable bicycles, fold bicycle beam, front including six link rods Pipe, seat pipe, saddle, locator card, front fork, back vent, five connecting pipes, five logical, V-shaped folding hand handle, front-wheel, trailing wheels and driving machine Structure, is characterized in that：Six link rods fold bicycle beam includes that front foldable base, rear foldable base, front-axle beam pipe, back rest pipe, rotating vane, flute profile are folded Part, connecting seat, bicycle beam latch hook, front rod and back link, front foldable base is opening flute profile stamping backwards, front foldable base flute profile The upper and lower of both sides respectively has one mutual to perforation, and front foldable base is welded in the rear side in the middle part of front head tube, and rear foldable base is One opening flute profile stamping forward, the upper and lower of rear foldable base flute profile both sides respectively have one mutual to perforation, rear foldable base The front side of seat pipe bottom is welded in, the front end welding rotating vane of front-axle beam pipe, the rear end welding flute profile folded piece of front-axle beam pipe, flute profile are folded Part is the flute profile stamping that Open Side Down, the front and rear of flute profile folded piece both sides respectively have one mutual to perforation, before being welded in By being connected to locking bolt perforation is rotated mutual with front foldable base top, rotating vane is welded in back rest pipe rear end to the rotating vane of beam pipe, Seat is welded to connect below back rest pipe front end, is also equipped with bicycle beam latch hook and torsion spring, after being welded in the pore of back rest pipe front end , by being connected to locking bolt perforation is rotated mutual with rear foldable base top, flute profile folded piece rear portion is mutual for the rotating vane of beam pipe To being punched through being connected perforation rotation to locking the anterior mutual of bolt and connecting seat, front foldable base bottom mutual to boring a hole By being connected with the front ring rotation of front rod to locking bolt, front rod is that the two ends of the metallic rod of a flat strip shaped respectively connect a circle, The rear circle of front rod by locking, bolt is mutual with connecting seat rear portion to be connected to perforation rotation, mutual right in rear foldable base bottom Perforation be connected with the rear end thereof of back link, the front end of back link be rotationally connected with flute profile folded piece front portion mutual to boring a hole, Bicycle beam latch hook in the pore of back rest pipe front end can pin the top margin of flute profile folded piece rear end in the presence of torsion spring；Seat pipe Back vent is welded in bottom, and trailing wheel is installed in the rear end of back vent, and five connecting pipes are welded in the front side of the bottom of rear foldable base and seat pipe lower end, The front end welding Five-way tube of five connecting pipes, front fork are rotated with front head tube and are connected, and connect front-wheel on front fork, and saddle is installed on seat pipe Top, locator card are connected to the anterior top of back rest pipe, and locator card is a working of plastics with C-shaped bayonet socket, and locator card can be six Bar folds the saddle pipe for clasping saddle after bicycle beam is folded；V-shaped folding hand handle is quick interlocking Formula V font folding hand handle, including handss Pedestal, left hand handle, right handgrip, left lock-connecting piece, right lock-connecting piece, handle base are made up of pedestal moulding and interior poling, are inside worn Pipe is molded in pedestal moulding, and the right and left of pedestal moulding has groove, and the right and left top of pedestal moulding is U-shaped Groove, bottom are flat-bottom slot, and the both sides of pedestal moulding the right and left flat-bottom slot respectively have one mutual to perforation, and handle base passes through Interior poling coordinates bowl-type pad, hanging bolt and slope nut, is fixedly connected in front fork tube, and left hand handle and right handgrip are pipes Bottom connect the part of cast, the plagiocephaly barrel of the left lock-connecting piece of the lower weld of left hand handle, left lock-connecting piece by a plagiocephaly barrel, One snap bolt and a nut are constituted, twist-on snap bolt in plagiocephaly barrel, are also twisted at the twist-on of snap bolt and plagiocephaly barrel Connect a nut, the channel of the right lock-connecting piece of the lower weld of right handgrip, right lock-connecting piece is by channel, latch hook, to connecting bolt, spring Constitute with bolt, the both sides up and down of the flute profile left part of channel have mutual to perforation, have one in the middle part of the flute profile of channel Screwed hole, the upper and lower both sides of channel mutual to be punched through to connecting bolt with the middle part of latch hook collar aperture rotate be connected, latch hook is Left end has the part of collar aperture, right part with handle into hook-type, middle part, has an elongated hole, spring is positioned over channel on the handle of latch hook Between screwed hole and the elongated hole of latch hook, penetrated with bolt in the elongated hole of latch hook and in spring, then be screwed into the spiral shell in channel In pit, the cast of the cast and right handgrip of left hand handle, by two pairs of lock bolts, is rotationally connected with pedestal moulding or so respectively Both sides mutual to perforation, the latch hook of right lock-connecting piece under the action of the spring, hooks the snap bolt of left lock-connecting piece and realizes locking Connect；Drive mechanism includes that axis, crank, chain wheel, pedal, flywheel and chain, axis are rotationally connected with five by axis accessory and lead to In, two cranks are fixedly connected on two of axis, and chain wheel is fixed on right crank, and two pedals are connected to two cranks, and flywheel is connected to The right side of trailing wheel, chain are wire-wrapped in chain wheel and flywheel.

The invention has the beneficial effects as follows：The present invention adopts bicycle beam to fold bicycle beam for six link rods, and six link rods can be made to fold bicycle beam Together with front head tube and seat pipe fast folding and rapid deployment, then coordinate quick interlocking Formula V font folding hand handle, make the folding of the present invention Folded and expansion has more advantage, it is achieved that fast but also little folding not only, five is led to and arranges five connecting pipes and seat pipe between so that the car Sheet-prevalent preferably can be played.

Description of the drawings：

Fig. 1 is schematic structural view of the invention

Fig. 2 is the structure chart that six link rod of the invention folds bicycle beam

Fig. 3 is the organigram of back link of the present invention

Fig. 4 is the organigram of handle base of the present invention

Fig. 5 is the structure chart of left lock-connecting piece of the invention and right lock-connecting piece

Fig. 6 is folding process schematic diagram of the present invention

Fig. 7 finishes figure for present invention folding

In figure：1 six link rods fold bicycle beam, head tube before 2,31 seat pipes, 32 saddles, 33 positioning Card, 4 front forks, 51 back vents, 52 5 connecting pipes, 53 5 lead to, and 6 V-shaped folding hand handles, before 7 Wheel, 8 trailing wheels, 9 drive mechanisms；Foldable base before 111, foldable base after 112,121 front-axle beam pipes, 122 back rest pipes, 13 rotating vanes, 14 flute profile folded pieces, 15 connecting seats, 16 bicycle beam latch hooks, 17 Front rod, 18 back links；61 handle bases, 62 left hand handles, 63 right handgrips, 64 left lock-connecting pieces, 65 right lock-connecting pieces；Left lock-connecting piece 64 also includes：641 plagiocephaly barrels, 642 snap bolts, 643 nuts； Right lock-connecting piece 65 also includes：651 channels, 652 latch hooks, 653 pairs of connecting bolts, 654 springs, 655 bolts.

Specific embodiment：

According to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, six described link rod quick-folding formula portable bicycles, roll over including six link rods Folded bicycle beam 1, front head tube 2, seat pipe 31, saddle 32, locator card 33, front fork 4, back vent 51, five connecting pipes 52, five logical 53, V-shaped folding Fold and handle 6, front-wheel 7, trailing wheel 8 and drive mechanism 9；

Described six link rods fold bicycle beam 1 include front foldable base 111, rear foldable base 112, front-axle beam pipe 121, back rest pipe 122, Rotating vane 13, flute profile folded piece 14, connecting seat 15, bicycle beam latch hook 16, front rod 17 and back link 18, described front foldable base 111 Opening flute profile stamping backwards, the upper and lower of 111 flute profile both sides of the front foldable base respectively have one mutual to perforation, Described front foldable base 111 is welded in the rear side in the middle part of front head tube 2, and described rear foldable base 112 is opening flute profile forward Stamping, the upper and lower of 112 flute profile both sides of the rear foldable base respectively have one mutual to perforation, described rear foldable base 112 It is welded in the front side of 31 bottom of seat pipe.

Described front-axle beam pipe 121 is a rectangular tube, the front end welding rotating vane 13 of the front-axle beam pipe 121, described rotating vane 13 It is sheet component of the upper end with cast, flute profile folded piece 14, described flute profile folded piece 14 are welded in the rear end of the front-axle beam pipe 121 It is the flute profile stamping that Open Side Down, the front and rear of 14 both sides of flute profile folded piece respectively has one mutual to perforation, welding In the cast of the rotating vane 13 of the front-axle beam pipe 121, by mutual with 111 top of front foldable base to lock bolt to wearing Hole rotates connection, and described back rest pipe 122 is a rectangular tube, rotating vane after the rear end welding of the back rest pipe 122, the back rest pipe Seat 15 is welded to connect below 122 front ends, and described connecting seat 15 is a flute profile stamping, and 15 flute profile of connecting seat front portion is with after The both sides in portion respectively have one mutual to perforation, go back close-fitting and be socketed one section of rectangular tube conduct in the pore of 122 front end of back rest pipe Strengthen, the left and right sides of 122 front end of back rest pipe, being inconjunction with wherein one section rectangular tube of socket, to be provided with one together mutual to wearing Hole, the top of 122 front end of back rest pipe is inconjunction with wherein one section rectangular tube of socket and is provided with an elongated hole, the back rest pipe together The top of 122 front portions is also provided with screwed hole, and described bicycle beam latch hook 16 is that bottom is cast, the Al squeezing material that top is hook-type Sliced pieces, the middle part of the bicycle beam latch hook 16 into rod, by one of the cast of the bicycle beam latch hook 16 penetrate from the top down in In 122 elongated hole of back rest pipe, and by the cast of the bicycle beam latch hook 16 corresponding to the back rest pipe 122 mutual to perforation, Torsion spring is placed into, one of the torsion spring lower tube wall that pushes down in one section of rectangular tube pore is made, makes one of torsion spring to push down described car On 16 rod of beam latch hook, then with to lock bolt penetrate the back rest pipe 122 mutual to perforation in, in torsion spring collar aperture and the car In the collar aperture of 16 cast of beam latch hook, and position to twisting, the cast of the rotating vane 13 is welded with 122 rear end of back rest pipe, is passed through It is connected to locking bolt perforation is rotated mutual with 112 top of rear foldable base.

Mutual anterior with described connecting seat 15 mutually to locking bolt to being punched through in 14 rear portion of flute profile folded piece Rotate connection to perforation, 111 bottom of front foldable base mutual to being punched through the front ring to locking bolt and front rod 17 Connection is rotated, described front rod 17 is that the two ends of the metallic rod of a flat strip shaped respectively connect a circle, the rear circle of the front rod 17 By being connected to locking bolt perforation is rotated mutual with described 15 rear portion of connecting seat, 112 bottom of rear foldable base is mutual To perforation be connected with the rear end thereof of back link 18, the front end of the back link 18 is rotationally connected with the flute profile folded piece 14 Anterior mutual to perforation, described back link 18 includes that left connecting rod, right connecting rod and barrel, left connecting rod and right connecting rod are two metals Into right-angle bending in the same direction, then left connecting rod and the paired shape of right connecting rod coordinate at the two ends of round bar, the left connecting rod and the right company The bending part of rod rear end is provided with the bending part of screw thread, the left connecting rod and the right connecting rod front end and is provided with pin-and-hole, and barrel is a pipe Tapped in the pore of shape part, by barrel be positioned over 112 bottom of rear foldable base mutual between perforation, using the left side The screw thread of connecting rod and right connecting rod rear end bending part respectively penetrate 112 top of rear foldable base mutual in perforation and It is screwed in the screwed hole of barrel, that is, completes that described back link 18 is mutual with 112 bottom of rear foldable base to be turned to perforation The bending part of the left connecting rod and the right connecting rod front end is buckled into the flute profile folded piece 14 anterior mutual by dynamic connection respectively In to perforation, and pin positioning on Upper gasket, pin is covered, that is, described back link 18 is completed with 14 anterior phase of the flute profile folded piece The mutual rotation connection to boring a hole, the bicycle beam latch hook 16 in the pore of 122 front end of back rest pipe, in the work of torsion spring With the lower top margin that can pin 14 rear end of flute profile folded piece.

Described seat pipe 31 is made up of pipe and pipe clamp, and the left and right sides of 31 pipe bottom of the seat pipe is provided with circular arc Mouthful, the arc opening welding back vent 51 of the 31 pipe bottom left and right sides of the seat pipe, the top of 31 pipe of the seat pipe also has vertically Crack, the top of 31 pipe of seat pipe socket pipe clamp, described back vent 51 be a pipe bend to U-shaped, the two of U-shaped The part that rear end is flattened, is provided with U-shaped gap, the U-shaped gap of 51 liang of rear ends of the back vent at the flattening of 51 liang of rear ends of the back vent Trailing wheel 8 is installed, described trailing wheel 8 is 8 inches of inflated wheel, described saddle 32 is connected with saddle pipe, the saddle pipe of the saddle 32 connects Be connected in the pipe pore of the seat pipe 31, described locator card 33 be one with C-shaped bayonet socket working of plastics, the locator card 33 Centre have a twist-on hole, the screwed hole of the twist-on hole of the locator card 33 corresponding to 122 front portion of back rest pipe, and pass through bolt The front portion that described locator card 33 is connected to the back rest pipe 122, described fixed after being connected with 122 screwed hole of back rest pipe The C-shaped bayonet socket of position card 33, corresponding to the saddle pipe that six link rod folds the saddle 32 after bicycle beam 1 is folded and described fixed The C-shaped bayonet socket of position card 33 can be engaged with the saddle pipe of the saddle 32.

Five described connecting pipes 52 are pipes, and the both sides up and down of the rear end of five connecting pipe 52 are provided with arc opening, institute The arc opening for stating the rear end of five connecting pipes 52 is corresponding with the external diameter of 31 pipe of the seat pipe, the rear end of five connecting pipe 52 Arc opening is welded with the front side of 31 pipe bottom of the seat pipe, also, the upper side of the rear end of five connecting pipe 52 is welded simultaneously The left and right sides of 112 bottom of rear foldable base is connected to, the left and right sides of the front end of five connecting pipe 52 is provided with arc opening, institute State corresponding and logical with described five 53 welding of external diameter of the arc opening logical with described five 53 of the front end of five connecting pipes 52.

Described front fork 4 is rotated with described front head tube 2 by seven bowls and is connected, and connects front-wheel 7 on described front fork 4, Described front-wheel 7 is 8 inches of inflated wheel.

Described V-shaped folding hand 6, including handle base 61, left hand 62, right handgrip 63, left lock-connecting piece 64, right lock Fitting 65, described handle base 61 are made up of pedestal moulding and interior poling, and described interior poling includes pipe and two bolts, With gear hobbing, the lower end of the interior poling pipe carries angle, the interior poling circle to the outer tube diameter on the interior poling pipe top Each one bolt of welding in the both sides on pipe top, the bolt of the related both sides connection in the top of the interior poling are molded together in the pedestal In moulding, described pedestal moulding into upper bottom length, short isosceles trapezoid shape of going to the bottom, the left and right two of described pedestal moulding While there is groove, the groove on the pedestal moulding left side is the groove being open to the left, and the groove on the right of the pedestal moulding is to be open to the right Groove, it is flat-bottom slot that the right and left top of the pedestal moulding is U-lag, bottom, the left and right two of the pedestal moulding The U-lag on side is with described left hand corresponding for the caliber of 62 and described right handgrip 63, described pedestal moulding the right and left The both sides of flat-bottom slot respectively have one mutual to perforation, the interior poling of the handle base 61, coordinate bowl-type pad, hanging bolt and Slope nut, penetrates in the front fork tube of the front fork 4, tightens hanging bolt, makes in slope nut and the handle base 61 Poling is tightened up and is misplaced, so that the interior poling of the handle base 61 is fixedly connected in front fork tube, described left hand is 62 With described right handgrip 63, connected and composed by pipe and cast, described left hand 62 and described right handgrip 63 pipe on Portion bends, and described left hand is 62 and the bottom connection cast of described 63 pipe of right handgrip.

Described left lock-connecting piece 64 is made up of a plagiocephaly barrel 641, a snap bolt 642 and a nut 643, and described is oblique Head barrel 641 is one of a barrel and makes plagiocephaly, the head of the plagiocephaly barrel 641 and the left hand 62 lower weld, Snap bolt 642 in the screwed hole of the plagiocephaly barrel 641 described in twist-on, the snap bolt 642 and the plagiocephaly barrel Nut 643 at 641 twist-on also described in twist-on one, described right lock-connecting piece 65 is by channel 651, latch hook 652, to connecting bolt 653rd, spring 654 and bolt 655 are constituted, and described channel 651 is the flute profile being open backward, the channel 651 Right head is plagiocephaly, and the both sides up and down of 651 flute profile left part of the channel have mutual to perforation, the flute profile of the channel 651 There are a screwed hole, the right head of the channel 651 and the lower weld of the right handgrip 63 in middle part, and the channel is about 651 Both sides are mutual to be connected to being punched through described connecting bolt 653 is rotated with the collar aperture in the middle part of the latch hook 652, described lock Hook 652 is that left end has the part of collar aperture, right part with handle into hook-type, middle part, has an elongated hole, the lock on the handle of the latch hook 652 The elongated hole of hook 652 is corresponding with the screwed hole of the channel 651, and described spring 654 is positioned over the channel 651 Between the elongated hole of screwed hole and the latch hook 652, penetrated with described bolt 655 in the elongated hole of the latch hook 652 and institute In the spring 654 that states, then it is screwed in the screwed hole of the channel 651.

The left hand by two pairs of lock bolts, is rotationally connected with 62 cast and the cast of the right handgrip 63 respectively Described pedestal moulding the right and left mutual to perforation, launch described left hand 62 and described right handgrip 63, the right side The latch hook 652 of lock-connecting piece 65 can hook the round end of the left lock-connecting piece 64 moment in the presence of the spring 654 Bolt 642, the mutual interlocking between the right lock-connecting piece 65 and the left lock-connecting piece 64, realize described left hand 62, described Right handgrip 63 and described handle base 61 between interfix.

Described drive mechanism 9 includes that axis, crank, chain wheel, pedal, flywheel and chain, described axis pass through axis Accessory is rotationally connected with described five logical 53, and the crank described in two is fixedly connected on two of the axis, described chain wheel Right crank is fixed on, the pedal described in two is connected to crank described in two, described pedal is folding pedals, described flywheel connects In the right side of the trailing wheel 8, described chain is wire-wrapped in the chain wheel and described flywheel.

Claims (8)

1. a kind of six link rods quick-folding formula portable bicycle, folds bicycle beam, front head tube, seat pipe, saddle, positioning including six link rods Card, front fork, back vent, five connecting pipes, five logical, V-shaped folding hand handle, front-wheel, trailing wheels and drive mechanism, is characterized in that：Six link rods Fold bicycle beam include front foldable base, rear foldable base, front-axle beam pipe, back rest pipe, rotating vane, flute profile folded piece, connecting seat, bicycle beam latch hook, Front rod and back link, front foldable base is opening flute profile stamping backwards, and the upper and lower of front foldable base flute profile both sides is each Have one mutual to perforation, front foldable base is welded in the rear side in the middle part of front head tube, and rear foldable base is opening flute profile punching forward Part, the upper and lower of rear foldable base flute profile both sides respectively have one mutual to perforation, before rear foldable base is welded in seat pipe bottom Side, the front end welding rotating vane of front-axle beam pipe, the rear end welding flute profile folded piece of front-axle beam pipe, flute profile folded piece is the flute profile that Open Side Down Stamping, the front and rear of flute profile folded piece both sides respectively has one mutual to perforation, and the rotating vane for being welded in front-axle beam pipe passes through to lock Bolt perforation is rotated mutual with front foldable base top is connected, and rotating vane, the lower section weldering of back rest pipe front end are welded in back rest pipe rear end Joint chair, is also equipped with bicycle beam latch hook and torsion spring in the pore of back rest pipe front end in succession, and the rotating vane for being welded in back rest pipe passes through to lock Bolt mutual with rear foldable base top to perforation rotate be connected, flute profile folded piece rear portion mutual to be punched through to lock bolt Be connected with anterior mutual the rotation to perforation of connecting seat, front foldable base bottom mutual to being punched through to lock bolt and front company The front ring of bar rotates connection, and front rod is that the two ends of the metallic rod of a flat strip shaped respectively connect a circle, and the rear circle of front rod is by right Lock bolt mutual with connecting seat rear portion to perforation rotate be connected, rear foldable base bottom mutual to bore a hole and back link rear end Rotate connection, it is anterior mutual to perforation that the front end of back link is rotationally connected with flute profile folded piece, in the pore of back rest pipe front end Bicycle beam latch hook in the presence of torsion spring, the top margin of flute profile folded piece rear end can be pinned；The bottom welding back vent of seat pipe, back vent Trailing wheel is installed in rear end, and five connecting pipes are welded in the front side of the bottom of rear foldable base and seat pipe lower end, the front end welding of five connecting pipes Five-way tube, front fork are rotated with front head tube and are connected, and connect front-wheel on front fork, and saddle is installed on the top of seat pipe, and locator card is connected to The anterior top of back rest pipe, locator card is a working of plastics with C-shaped bayonet socket, and locator card can be folded after bicycle beam is folded in six link rods and be detained The firmly saddle pipe of saddle；V-shaped folding hand handle is quick interlocking Formula V font folding hand handle, including handle base, left hand handle, the right hand , left lock-connecting piece, right lock-connecting piece, handle base is made up of pedestal moulding and interior poling, and interior poling is molded in pedestal moulding Interior, the right and left of pedestal moulding has a groove, and it is flat-bottom slot that the right and left top of pedestal moulding is U-lag, bottom, pedestal The both sides of moulding the right and left flat-bottom slot respectively have one mutual to perforation, handle base by interior poling cooperation bowl-type pad, Hanging bolt and slope nut, are fixedly connected in front fork tube, and left hand connects the bottom for right handgrip being pipe in the portion of cast Part, the plagiocephaly barrel of the left lock-connecting piece of the lower weld of left hand handle, left lock-connecting piece is by a plagiocephaly barrel, a snap bolt and a nut Constitute, twist-on snap bolt in plagiocephaly barrel, also one nut of twist-on at the twist-on of snap bolt and plagiocephaly barrel, under right handgrip The channel of right lock-connecting piece is welded in portion, and right lock-connecting piece is constituted by channel, latch hook, to connecting bolt, spring and bolt, flute profile The both sides up and down of the flute profile left part of part have mutual to perforation, have a screwed hole, channel upper and lower two in the middle part of the flute profile of channel Side mutual to be punched through to connecting bolt with the middle part of latch hook collar aperture rotate be connected, latch hook is that left end has circle into hook-type, middle part The part of hole, right part with handle, has an elongated hole on the handle of latch hook, spring is positioned over channel screwed hole and latch hook elongated hole it Between, penetrated with bolt in the elongated hole of latch hook and spring in, then be screwed in the screwed hole of channel, the cast of left hand handle and The cast of right handgrip, by two pairs lock bolts, be rotationally connected with respectively pedestal moulding the right and left mutual to perforation, right lock The latch hook of fitting under the action of the spring, hooks the snap bolt of left lock-connecting piece and realizes interlocking；Drive mechanism includes axis, song Handle, chain wheel, pedal, flywheel and chain, axis by axis accessory be rotationally connected with five logical in, two cranks are fixedly connected on axis Two, chain wheel is fixed on right crank, and two pedals are connected to two cranks, and flywheel is connected to the right side of trailing wheel, and chain is wire-wrapped in tooth Disk and flywheel；Described front-axle beam pipe is a rectangular tube, and described rotating vane is sheet component of the upper end with cast, described back rest pipe It is a rectangular tube, described connecting seat is a flute profile stamping, the both sides of the connecting seat flute profile front and rear respectively have one mutual To perforation；Close-fitting is gone back in the pore of the back rest pipe front end is socketed one section of rectangular tube as reinforcement, the back rest pipe front end The left and right sides, is inconjunction with wherein one section rectangular tube of socket and is provided with mutual to perforation a, top for the back rest pipe front end together, It is inconjunction with wherein one section rectangular tube of socket and is provided with an elongated hole together, the anterior top of the back rest pipe is also provided with screwed hole.

2. six link rods quick-folding formula portable bicycle according to claim 1, is characterized in that：Described bicycle beam latch hook is Bottom be cast portion, top for hook-type Al squeezing material sliced pieces, the middle part of the bicycle beam latch hook into rod portion, by the car One of the cast portion of beam latch hook is penetrated in the back rest pipe range hole from the top down, and the cast portion pair by the bicycle beam latch hook Back rest pipe described in Ying Yu mutual to perforation, place into torsion spring, make a down tube that pushes down in one section of rectangular tube pore of torsion spring Wall, makes in one of the torsion spring rod portion for pushing down the bicycle beam latch hook, then penetrates mutual right of the back rest pipe with to locking bolt In perforation, in torsion spring collar aperture and in the collar aperture in the bicycle beam latch hook cast portion, and to twisting positioning.

3. six link rods quick-folding formula portable bicycle according to claim 1, is characterized in that：Described back link includes Left connecting rod, right connecting rod and barrel, left connecting rod and right connecting rod are the two ends right-angle bendings in the same direction of two metal round rod, then left company Bar and the paired shape of right connecting rod coordinate, and the bending part of the left connecting rod and the right connecting rod rear end is provided with screw thread, the left connecting rod and The bending part of the right connecting rod front end is provided with pin-and-hole, barrel be a tubular member pore in tapped, barrel is positioned over institute State rear foldable base bottom mutual to, between perforation, being worn with the screw thread of the left connecting rod and right connecting rod rear end bending part respectively Enter the rear foldable base top mutual in perforation and being screwed in the screwed hole of barrel, that is, complete described back link and institute The mutual rotation connection to boring a hole in rear foldable base bottom is stated, the bending part of the left connecting rod and the right connecting rod front end is distinguished Buckle into the flute profile folded piece anterior mutual to perforation in, and cover pin Upper gasket, pin on and position, that is, complete described in rear company Bar is anterior with the flute profile folded piece mutual to be connected to the rotation that bores a hole.

4. six link rods quick-folding formula portable bicycle according to claim 1, is characterized in that：The seat pipe pipe bottom The left and right sides be provided with arc opening, the arc opening welding back vent of the seat pipe pipe bottom left and right sides, described back vent is one Pipe bends to U-shaped, the part that two rear ends of U-shaped are flattened, and is provided with U-shaped gap at the flattening of two rear end of the back vent.

5. six link rods quick-folding formula portable bicycle according to claim 1, is characterized in that：The centre of the locator card There is twist-on hole, the twist-on hole of the locator card is corresponding to the anterior screwed hole of the back rest pipe, and described is determined by bolt Position card is connected to the front portion of the back rest pipe, and the C-shaped bayonet socket of the locator card after being connected with the back rest pipe thread hole is corresponding In the saddle pipe that six link rod folds the saddle after bicycle beam is folded, and the C-shaped bayonet socket of the locator card can be with the seat The top engaging of pipe.

6. six link rods quick-folding formula portable bicycle according to claim 1, is characterized in that：Five described connecting pipes are One pipe, the both sides up and down of the rear end of five connecting pipe are provided with arc opening, the arc opening of the rear end of five connecting pipe and institute The external diameter for stating seat pipe pipe is corresponding, and the left and right sides of the front end of five connecting pipe is provided with arc opening, five connecting pipe The arc opening of the front end external diameter logical with described five is corresponding.

7. six link rods quick-folding formula portable bicycle according to claim 1, is characterized in that：Described interior poling includes Pipe and two bolts, with gear hobbing, the lower end of the interior poling pipe carries angle to the outer tube diameter on the interior poling pipe top, A bolt is respectively welded in the both sides on the interior poling pipe top, and described pedestal moulding is into upper bottom length, the isosceles for going to the bottom short ladder Shape, the right and left of described pedestal moulding have groove, and the groove on the pedestal moulding left side is the groove being open to the left, described Groove on the right of pedestal moulding is the groove being open to the right, the U-lag of the right and left of the pedestal moulding and described left hand Corresponding with the caliber of described right handgrip.

8. six link rods quick-folding formula portable bicycle according to claim 1, is characterized in that：Described plagiocephaly barrel is One of one barrel makes plagiocephaly, and the lower weld of the head of the plagiocephaly barrel and the left hand handle, described channel are out Mouth flute profile backward, the right head of the channel is plagiocephaly, the right head of the channel and the lower weld of the right handgrip, institute State the mutual interlocking between right lock-connecting piece and the left lock-connecting piece, realize described left hand, described right handgrip and described Interfixing between handle base.