Summary of the invention
The object of the invention is a kind of car beam will be provided to be that four-bar linkage folds and drive wheel is arranged on front-wheel---four-bar linkage folds upper and lower override type portable bicycle.The object of the present invention is achieved like this, four-bar linkage folds upper and lower override type portable bicycle, comprise four-bar linkage folded bicycle beam, front head tube, rear inclined tube, seat pipe, saddle, locator card, front fork assembly, after-frame, V-shaped folding hand handle, front-wheel, trailing wheel and driver train, it is characterized in that: four-bar linkage folded bicycle beam comprises foldable base, front-axle beam pipe, back rest pipe, rotating vane, flute profile folded piece, thick-walled tube, car beam latch hook and connecting rod, foldable base is opening flute profile stamping backwards, the upper and lower of foldable base flute profile both sides respectively has one mutual to perforation, foldable base is welded in the rear side of front head tube bottom, the front end welding rotating vane of front-axle beam pipe, the below welding thick-walled tube of the rear end of front-axle beam pipe, in the pore of front-axle beam pipe rear end, car beam latch hook and torsion spring are also installed, the rotating vane being welded in front-axle beam pipe is by lock bolt and mutual being rotationally connected perforation in foldable base top, back rest pipe rear end welding base pipe, the front end welding flute profile folded piece of back rest pipe, flute profile folded piece is the flute profile stamping that Open Side Down, the front and rear of flute profile folded piece both sides respectively has one mutual to perforation, flute profile folded piece anterior mutual to perforation by being rotationally connected lock bolt and thick-walled tube, foldable base bottom mutual to perforation by enclosing be rotationally connected before lock bolt and connecting rod, connecting rod is that the two ends of the Metallic rod of a flat strip shaped respectively connect a circle, the rear circle of connecting rod is by lock bolt and mutual being rotationally connected perforation in flute profile folded piece rear portion, car beam latch hook in the pore of front-axle beam pipe rear end is under the effect of torsion spring, the top margin of flute profile folded piece front end can be pinned, locator card is connected to the top at front-axle beam pipe rear portion, locator card is the Plastic Parts of a band C shape bayonet socket, head tube before locator card can fasten after four-bar linkage folded bicycle beam is folding, inclined tube after the rear side welding of seat pipe, the bearing seat of the lower end welding after-frame of rear inclined tube, after-frame comprises bearing seat, connecting leg, fix shaft, left back forks piece and right back forks piece, bearing seat backhand welding is managed in succession, the rear end welding fix shaft of connecting leg, left back forks piece and right back forks piece are welded in the back lower place of bearing seat, trailing wheel is installed in the rear end of left back forks piece and right back forks piece, front fork assembly is made up of front-fork and front fork pipe fitting, front-fork can fold with front fork pipe fitting, front fork pipe fitting and front head tube are rotationally connected, and the lower end of front-fork connects front-wheel, and saddle install is in the top of seat pipe, V-shaped folding hand handle is quick interlocking formula V-shaped folding hand handle, comprise hand pedestal, left hand handle, right handgrip, left lock-connecting piece, right lock-connecting piece, hand is made up of pedestal pedestal moulding and interior poling, interior poling injection moulding is in pedestal moulding, the right and left of pedestal moulding has groove, the right and left top of pedestal moulding is U-lag, bottom is flat-bottom slot, the both sides of pedestal moulding the right and left flat-bottom slot respectively have one mutual to perforation, hand coordinates pedestal with bowl-type pad by interior poling, hanging bolt and slope nut, be fixedly connected in front fork assembly pipe, left hand is the parts being connected cast with the right handgrip bottom that is pipe, the plagiocephaly barrel of the left lock-connecting piece of lower weld of left hand handle, left lock-connecting piece is by a plagiocephaly barrel, one round head bolt and a nut are formed, twist in plagiocephaly barrel and connect round head bolt, the stubborn place of connecing of round head bolt and plagiocephaly barrel also twists and connects a nut, the channel of the right lock-connecting piece of lower weld of right handgrip, right lock-connecting piece is by channel, latch hook, to connecting bolt, spring and dowel bolt are formed, the both sides up and down of the flute profile left part of channel have mutual to perforation, a tapped bore is had in the middle part of the flute profile of channel, the upper and lower both sides of channel mutual to perforation by being rotationally connected the collar aperture in the middle part of connecting bolt and latch hook, latch hook is that left end becomes hook-type, there is collar aperture at middle part, the parts of right part band handle, the handle of latch hook there is an elongated hole, spring is positioned between the tapped bore of channel and the elongated hole of latch hook, penetrate with dowel bolt in the elongated hole of latch hook with in spring, be screwed into again in the tapped bore of channel, the cast of left hand handle and the cast of right handgrip, by two to lock bolt, be rotationally connected with respectively pedestal moulding the right and left mutual to perforation, the latch hook of right lock-connecting piece under the action of the spring, hook the round head bolt of left lock-connecting piece and realize interlocking, driver train comprises left bent axle, right bent axle, chain wheel, two treadles, two steps, flywheel and chain, right bent axle is fixedly connected with chain wheel, left bent axle and right bent axle are interconnected in the two bearings endoporus in bearing seat, the rear end of two treadles is socketed on the two ends of fix shaft respectively, treadle is by flat tube, sleeve, barrel and chute are formed, the rear end welded sleeve of flat tube, front end welding barrel, chute is an oblong circle, chute is welded in the rear portion of flat tube, each socket one bearing on the minor axis of left bent axle and right bent axle, left bent axle and right bent axle minor axis head bearing, be slidably connected in the chute at the rear portion of two treadles respectively, two steps are fastened to the front end of two treadles respectively, flywheel is installed on the right side of trailing wheel, on chain solderless wrapped connection and chain wheel and flywheel.
The invention has the beneficial effects as follows: the present invention adopts car beam to be four-bar linkage folded bicycle beam, the front head tube of four-bar linkage folded bicycle beam and seat pipe, rear inclined tube fast folding and rapid deployment can be made, coordinate quick interlocking formula V-shaped folding hand handle, folding and expansion of the present invention is made to have more advantage, again front fork assembly is folded, achieve less the folding of the present invention, respectively bearing is provided with by the right-hand member of the left end of left bent axle and right bent axle, and be slidably connected in the chute at treadle rear portion, such that the driver train of upper and lower override type is simplified, cost reduces.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the constructional drawing of four-bar linkage folded bicycle beam of the present invention;
Fig. 3 is the structural representation of front fork assembly of the present invention;
Fig. 4 is that hand of the present invention is the organigram of pedestal;
Fig. 5 is the constructional drawing of the left lock-connecting piece of the present invention and right lock-connecting piece;
Fig. 6 is the anatomical connectivity figure of the left bent axle of the present invention, right bent axle and chain wheel;
Fig. 7 is folding process schematic diagram of the present invention;
Fig. 8 is that the present invention folds complete figure;
In figure: 1---four-bar linkage folded bicycle beam, 2---front head tube, 31---rear inclined tube, 32---seat pipe, 33---saddle, 34---locator card, 4---front fork assembly, 5---after-frame, 6---V-shaped folding hand handle, 7---front-wheel, 8---trailing wheel, 9---driver train; Wherein four-bar linkage folded bicycle beam 1 also comprises: 11---front foldable base, and 12---front-axle beam pipe, 13---back rest pipe, 14---rotating vane, 15---flute profile folded piece, 16---thick-walled tube, 17---car beam latch hook, 18---connecting rod; After-frame 5 also comprises: 51---bearing seat, and 52---connecting leg, 53---fix shaft, 54---left back forks piece, 55---right back forks piece; V-shaped folding hand also comprises 6: 61---hand pedestal, 62---left hand handle, 63---right handgrip, 64---left lock-connecting piece, 65---right lock-connecting piece; Left lock-connecting piece 64 also comprises: 641---plagiocephaly barrel, and 642---round head bolt, 643---nut; Right lock-connecting piece 65 also comprises: 651---channel, and 652---latch hook, 653---to connecting bolt, 654---spring, 655---dowel bolt; Driver train 9 also comprises: 91---left bent axle, and 92---right bent axle, 92---chain wheel, 94---treadle, 95---step, 96---flywheel, 97---chain.
Detailed description of the invention
According to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, described four-bar linkage folds upper and lower override type portable bicycle, comprise six link rod folded bicycle beams 1, front head tube 2, rear inclined tube 31, seat pipe 32, saddle 33, locator card 34, front fork assembly 4, after-frame 5, V-shaped folding hand 6, front-wheel 7, trailing wheel 8 and driver train 9;
Described four-bar linkage folded bicycle beam 1 comprises foldable base 11, front-axle beam pipe 12, back rest pipe 13, rotating vane 14, flute profile folded piece 15, thick-walled tube 16, car beam latch hook 17 and connecting rod 18, described foldable base 11 is opening flute profile stampings backwards, the upper and lower of described front foldable base 11 flute profile both sides respectively has one mutual to perforation, described front foldable base 11 is welded in the rear side of front head tube 2 bottom, described front-axle beam pipe 12 is rectangular tubes, the front end welding rotating vane 14 of described front-axle beam pipe 12, described rotating vane 14 is sheet components of upper end band cast, the below welding thick-walled tube 16 of the rear end of described front-axle beam pipe 12, the described thick-walled tube 16 welded with described front-axle beam pipe 12 is transversely arranged, go back close-fitting in the pore of described front-axle beam pipe 12 rear end and be socketed one section of rectangular tube as reinforcement, the left and right sides of described front-axle beam pipe 12 rear end, inconjunction with socket wherein one section of rectangular tube has one mutual to perforation together, the top of described front-axle beam pipe 12 rear end, inconjunction with socket wherein one section of rectangular tube has an elongated hole together, described car beam latch hook 17 is bottoms is cast, top is the sliced pieces of the Al squeezing material of hook-type, the middle part of described car beam latch hook 17 becomes rod, one of the cast of described car beam latch hook 17 is penetrated from the top down in described front-axle beam pipe 12 elongated hole, and by the cast of described car beam latch hook 17 correspond to described front-axle beam pipe 12 mutual to perforation, put into torsion spring again, make torsion spring lower tube wall pushed down in one section of rectangular tube pore, one of torsion spring is made to push down on described car beam latch hook 17 rod, again with to lock bolt penetrate described front-axle beam pipe 12 mutual to perforation in, in torsion spring collar aperture and in the collar aperture of described car beam latch hook 17 cast, and to stubborn location, be welded in the cast of the described rotating vane 14 of described front-axle beam pipe 12, by to lock bolt and mutual being rotationally connected perforation in described foldable base 11 top, the top at described front-axle beam pipe 12 rear portion also has a tapped bore, described locator card 34 is one with the Plastic Parts of C shape bayonet socket, the centre of described locator card 34 has to twist and connects hole, the stubborn of described locator card 34 connects the tapped bore that hole corresponds to described front-axle beam pipe 12 rear portion, and by bolt, described locator card 34 is connected to the top at the rear portion of described front-axle beam pipe 12, the C shape bayonet socket of the described locator card 34 after being connected with described front-axle beam pipe 12 tapped bore, the top of the described front head tube 2 after folding corresponding to described four-bar linkage folded bicycle beam 1, and the C shape bayonet socket of described locator card 34 can with described before the engaging of head tube 2.
Described back rest pipe 13 is rectangular tubes, the rear end welding base pipe 32 of described back rest pipe 13, the welding flute profile folded piece 15 of the front end of described back rest pipe 13, described flute profile folded piece 15 is flute profile stampings that Open Side Down, the front and rear of described flute profile folded piece 15 both sides respectively has one mutual to perforation, described flute profile folded piece 15 anterior mutual to perforation by being rotationally connected lock bolt and described thick-walled tube 16, described foldable base 11 bottom mutual to perforation by enclosing be rotationally connected before lock bolt and connecting rod 18, described connecting rod 18 is that the two ends of the Metallic rod of a flat strip shaped respectively connect a circle, the rear circle of described connecting rod 18 is by lock bolt and mutual being rotationally connected perforation in described flute profile folded piece 15 rear portion, described car beam latch hook 17 in the pore of described front-axle beam pipe 12 rear end is under the effect of torsion spring, the top margin of described flute profile folded piece 15 front end can be pinned.
Described seat pipe 32 is made up of pipe and pipe clamp, the top socket pipe clamp of described seat pipe 32 pipe, inclined tube 31 after the rear side welding of described seat pipe 32 pipe, described rear inclined tube 31, that the upper end of a pipe is pressed into longitudinal front spill, the punching of the left and right sides, lower end has the pipe fitting of arc opening, the front spill of described rear inclined tube 31 is corresponding with the pipe of described seat pipe 32, the arc opening of described rear inclined tube 31 is corresponding with the bearing seat 51 of after-frame 5, the bearing seat 51 of the lower end welding after-frame 5 of described seat pipe 32, described saddle 33 is connected with saddle pipe, the saddle pipe of described saddle 33 is connected in the pipe pore of described seat pipe 32, described after-frame 5 comprises bearing seat 51, connecting leg 52, fix shaft 53, left back forks piece 54 and right back forks piece 55, described bearing seat 51 is that the double-ended vehicle of one section of pipe pore has the step placing bearing, described bearing seat welds described connecting leg 52 backward, described rear inclined tube 31, also reinforcing chip is welded with between described bearing seat 51 and described connecting leg 52, the left and right end of described bearing seat 51 respectively inlays a bearing, the rear end welding fix shaft 53 of described connecting leg 52, described fix shaft 53 is axles that two lathe car of a round steel is little, the center of the two ends end points of described fix shaft 53 has axial tapped bore, left back forks piece 54 and right back forks piece 55 are welded in the back lower place of described bearing seat 51, described left back forks piece 54 is that top is with arc opening, bottom is with the strip metal punching of U-shaped gap, described right back forks piece 55 is the strip metal stampings with two right-angle bendings in the middle part of in the of, the top of right back forks piece 55 is with arc opening, the bottom of right back forks piece 55 is with U-shaped gap, left back forks piece 54 described in after welding with described bearing seat 51 and described right back forks piece 55, forming one with described bearing seat 51 is font, in the U-shaped gap of described left back forks piece 54 and in the U-shaped gap of described right back forks piece 55, trailing wheel 8 is installed, described trailing wheel 8 is inflated wheel of 10 inches.
Described front fork assembly 4 is made up of front-fork and front fork pipe fitting, described front-fork comprises wheel fork, semicircle lock shaft, safety plug and spring, wheel fork is the metal stamping that about one two downward bending becomes fork-shaped, the front side at wheel fork top and rear side respectively have right angle flange upwards, before and after wheel fork top, two, left and right of side flanging respectively has one mutual to wearing circular hole, before and after wheel fork top, the middle part of side flanging has one mutual to wearing rectangular opening, semicircle lock shaft is that of half circular shaft connects a shank of the key, there is the tapped bore of an axis centre of an other end end points of half circular shaft, half circular shaft of semicircle lock shaft penetrate from front to back before and after the wheel fork top left head of side flanging to wearing in circular hole, be screwed in the tapped bore of half circular shaft with a bolt, semicircle lock shaft is positioned the left head of side flanging before and after wheel fork top to wearing in circular hole, safety plug is a rod like parts being umbrella shape, there is a groove centre of safety plug umbrella head, safety plug has an aperture on the rod of umbrella head, the rod of safety plug is penetrated from front to back before and after wheel fork top side flanging to wearing in rectangular opening and in spring, insert in the aperture on safety plug rod with a pin again, spring one crown is made the rear side flange of wheel fork, one crown the pin on safety plug, spring is allowed to head on pin, safety plug is made to have elastic force forward, and pin becomes again safety plug forward spacing, the lower end of the wheel fork left and right sides has mutual U-shaped gap, wheel fork right flank is also bolted a strong magnet, described front fork pipe fitting comprises pleated sheet and front fork tube, upper pleated sheet is that the right is with volume circle, the left side is bent into the blanked part of crotch, Intermediate Gray one circular hole of upper pleated sheet, the circular hole of upper pleated sheet and front fork tube are socketed, and weld, front fork tube is that the top of a pipe is with outside thread, the volume circle of upper pleated sheet is by being rotationally connected wearing circular hole the right head of side flanging before and after lock bolt and wheel fork top, the crotch of upper pleated sheet can by the left head of side flanging before and after wheel fork top to the semicircle lock shaft interlocking wearing circular hole, shank of the key after the crotch interlocking of semicircle lock shaft and upper pleated sheet is positioned in centre one groove of safety plug, described front fork pipe fitting pipe by seven bowls and described before head tube 2 be rotationally connected, the U-shaped gap of the wheel fork left and right sides installs front-wheel 7, described front-wheel 7 is inflated wheel of 10 inches, V-shaped folding hand is rotated 180 ° 6 related described front fork assemblies 4, after more described front-fork and described front fork pipe fitting being folded, strong magnet on wheel fork holds described front head tube and locates.
Described V-shaped folding hand is 6, comprise hand pedestal 61, left hand is 62, right handgrip 63, left lock-connecting piece 64, right lock-connecting piece 65, described hand is made up of pedestal 61 pedestal moulding and interior poling, described interior poling comprises pipe and two bolts, the outer tube diameter gear hobbing on described interior poling pipe top, the lower end of described interior poling pipe is with angle, a bolt is respectively welded in the both sides on described interior poling pipe top, the bolt that the related both sides, top of described interior poling connect together injection moulding in described pedestal moulding, described pedestal moulding becomes upper base long, to go to the bottom short isosceles trapezoid shape, the right and left of described pedestal moulding has groove, the groove on the described pedestal moulding left side is opening groove left, groove on the right of described pedestal moulding is opening groove to the right, the right and left top of described pedestal moulding is U-lag, bottom is flat-bottom slot, the U-lag of the right and left of described pedestal moulding with described left hand corresponding for the caliber of 62 and described right handgrip 63, the both sides of described pedestal moulding the right and left flat-bottom slot respectively have one mutual to perforation, described hand is poling in pedestal 61, coordinate bowl-type pad, hanging bolt and slope nut, penetrate in the front fork assembly pipe of described front fork assembly 4, tighten hanging bolt, slope nut and described hand is made poling in pedestal 61 to be tightened up and misplace, thus make described hand that poling in pedestal 61 is fixedly connected in front fork assembly pipe, described left hand is 62 and described right handgrip 63, connected and composed by pipe and cast, described left hand is 62 and the pipe upper bend of described right handgrip 63, described left hand is connected cast 62 with the bottom of described right handgrip 63 pipe.
Described left lock-connecting piece 64 is by a plagiocephaly barrel 641, one round head bolt 642 and a nut 643 are formed, described plagiocephaly barrel 641 is that an of barrel makes plagiocephaly, the head of described plagiocephaly barrel 641 and described left hand are the lower weld of 62, twist in the tapped bore of described plagiocephaly barrel 641 and connect described round head bolt 642, the nut 643 connect described in one is also twisted at the stubborn place of connecing of described round head bolt 642 and described plagiocephaly barrel 641, described right lock-connecting piece 65 is by channel 651, latch hook 652, to connecting bolt 653, spring 654 and dowel bolt 655 are formed, described channel 651 is opening flute profiles backward, the right head of described channel 651 is plagiocephaly, the both sides up and down of described channel 651 flute profile left part have mutual to perforation, a tapped bore is had in the middle part of the flute profile of described channel 651, the right head of described channel 651 and the lower weld of described right handgrip 63, mutual perforation is rotationally connected connecting bolt 653 and the collar aperture in the middle part of described latch hook 652 by described in described channel about 651 both sides, described latch hook 652 is that left end becomes hook-type, there is collar aperture at middle part, the parts of right part band handle, the handle of described latch hook 652 there is an elongated hole, the elongated hole of described latch hook 652 is corresponding with the tapped bore of described channel 651, between the tapped bore that described spring 654 is positioned over described channel 651 and the elongated hole of described latch hook 652, penetrate in spring 654 in the elongated hole of described latch hook 652 He described with described dowel bolt 655, be screwed into again in the tapped bore of described channel 651.
Described left hand is the cast of the cast of 62 and described right handgrip 63, by two to lock bolt, be rotationally connected with respectively described pedestal moulding the right and left mutual to perforation, left hand described in expansion is 62 and described right handgrip 63, the described latch hook 652 of described right lock-connecting piece 65 is under the effect of described spring 654, the described round head bolt 642 of described left lock-connecting piece 64 can be hooked instantaneously, mutual interlocking between described right lock-connecting piece 65 and described left lock-connecting piece 64, the left hand described in realization 62, described right handgrip 63 and described hand be interfixing between pedestal 61.
Described driver train 9 comprises left bent axle 91, right bent axle 92, chain wheel 93, treadle 94, step 95, flywheel 96 and chain 97, described left bent axle 91 is by square shaft, left crank and left minor axis are formed, there is the tapped bore of an axis centre of the right-hand member end points of square shaft, the left end close-fitting of square shaft is socketed in the square hole of left crank, left crank is the metal stamping of sheet, one of left crank has a square hole, there is a circular hole other end, left minor axis is the axle that two lathe car of a round steel is little, there is the tapped bore of an axis centre of the left head end point of left minor axis, the right-hand member close-fitting of left minor axis is socketed in the circular hole of left crank, the left end of left minor axis is socketed a bearing, and be fastened to a bolt in the tapped bore of left minor axis bearing is located, described right bent axle 92 is by square hole circular shaft, right crank and right minor axis are formed, square hole circular shaft is the axle of a powder metallurgy, the profile of square hole circular shaft is cylindrical, the right-hand member of square hole circular shaft has a right convex tenon, there is a square hole at the square hole axial left part of circle and middle part, the axial right-hand member of square hole circle, and there is a counterbore centre being positioned at tenon, a through hole is had between the counterbore of square hole circular shaft and square hole, right crank is the metal stamping of sheet, one of right crank has a mortise, there is a circular hole other end, right crank is welded in the left surface of chain wheel 93, and make the mortise of right crank correspond to the interstitial hole of described chain wheel 93, described chain wheel 93 also on have circular hole corresponding to right crank, be socketed on the tenon of square hole circular shaft with close-fitting in described chain wheel 93 interstitial hole in the mortise of right crank, right minor axis is socketed with close-fitting in the circular hole of right crank in the circular hole of described chain wheel 93 correspondence, right minor axis is the axle that two lathe car of a round steel is little, there is the tapped bore of an axis centre of the right head end point of right minor axis, the right-hand member of right minor axis is socketed a bearing, and be fastened to a bolt in the tapped bore of right minor axis bearing is located, the square hole circular shaft of described right bent axle 92 penetrates in the endoporus of two bearings in described bearing seat 51 from right to left, the square shaft of described left bent axle 91 penetrates from left to right in the square hole of described right bent axle 92 square hole circular shaft, and make the left minor axis of described left bent axle 91 become 180 ° of correspondences with the right minor axis of described right bent axle 92, a bolt is penetrated in through hole again in described right bent axle 92 square hole circular shaft counterbore, and be fastened in the tapped bore of described left bent axle 91 square shaft fixing, the bent axle 92 on described left bent axle 91 and the described right side is made to be rotationally connected with in described bearing seat 51, described treadle 94 is by flat tube, sleeve, barrel and chute are formed, the rear end welded sleeve of flat tube, front end welding barrel, the below welding chute at the rear portion of flat tube, sleeve is the blank of thick-walled tube, barrel has attacked screw thread in the pore being cut into cast thick-walled tube, chute is bent as circular arc at two of the flat metal of a bar shaped, make the circle of the flat metal bending long circle of a bar shaped, described in two, the sleeve turning set of treadle 94 is connected to two of described fix shaft 53, and coordinate two pads to be fastened in the tapped bore at described fix shaft 53 two ends with two bolts, by treadle 94 rotational positioning described in two in two of described fix shaft 53, and make the slotted hole of treadle 94 chute described in two be socketed on on left minor axis connection bearing respectively, and with on right minor axis connection bearing, described step 95 is pedals of bicycle, step 95 described in two is fastened in the barrel of treadle 94 described in two respectively, described flywheel 96 is connected to the right side of described trailing wheel 8, described chain 97 is wire-wrapped on described chain wheel 93 and described flywheel 96.