CN201587488U

CN201587488U - Portable bicycle

Info

Publication number: CN201587488U
Application number: CN2009201479075U
Authority: CN
Inventors: 丁敏学
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-31
Filing date: 2009-03-31
Publication date: 2010-09-22
Anticipated expiration: 2019-03-31

Abstract

The utility model discloses to a portable bicycle, and relates to a bicycle. The portable bicycle is formed by installing a front fork, a handlebar, a saddle, a clothes rack, tires, a hub spindle, a central shaft structure and a bicycle frame according to balance and angle positions; the lower corner of the bicycle frame is added with a rear fork capable of contracting to the bicycle frame; and a damping spring is respectively installed at the connecting positions of a front fork mouth, a rear fork pulling plate and the bicycle frame. The front fork, the handlebar, the rear fork and the saddle are connected with the bicycle frame by a live axle, a spring, a steel sling and a clasp so as to form an automatic flexible locking device. A check block at the crank end part and a pedal screw are occluded, and trod up and down by 120 degrees; a crank chain wheel is transmitted to a driving flywheel at the right side of the bicycle frame by a chain; the back surface is contacted with an anti-driving flywheel; and the wheels are rotated by the driving of an accelerating chain wheel and a rear driving chain wheel. The positions of a rear fork mouth and a front damping rocker arm are connected with a seven-hour wheel hub spindle. The whole bicycle is mainly made of aluminum alloy, nylon, superior steel, wear-resistant anti-oxidized rubber material and comprises bicycle components. The bicycle body and the center of gravity are low, the riding is stable, the folding process is simple, and the shape is regular: the shape is of a flat rectangle not more than 50*45*17, and the mass is not more than 8Kg, so that the portable bicycle is convenient for carrying and arranging, and capable of riding at any time.

Description

By bike portable

Affiliated technical field.

This novel portable by bike, relate to a kind of portable bicycle, puzzlement and the band bicycle stair activity that in the middle of people live, go on business, travel, bus always has one section walking up and down, enter the room and the inconvenience in bicycle parking place, often the inconvenience of pricking tire, gas leakage arranged.

Background technology.

Well-known standard bicycle, install by balance and angle position by front fork, handlebar and standpipe, saddle and standpipe, front and back air-inflation tyre and beaming roller, clothes hanger, bottom bracket axle structure and vehicle frame, lock is contained on wheel hub or the rim, and shock-damping structure is contained in the midway location of car load.And change 360 ° by the flywheel of chain gear to trailing wheel with foot-operated crank, drive wheels is rotated.By laterally folded, the shape irregularity of poststack, volume also be not less than car load 1/3, weight is not light yet, be not easy to carry and place.Well do not utilize effective work done hexagonal angle degree and empty travel time and the height of sailing 240 ° of angles.The car load center of gravity is with the damping spring overlay when passing through the Lixing and sail, the consumption level power of passing through forward, and the material of car load mostly is iron and steel.

Summary of the invention.

The technical matters that solves: it is laborsaving to carry for convenience, ride, the purpose of this utility model provides a kind of by bike portable, it can not only be carried, ride conveniently, and in light weight, ride laborsaving, vehicle body is short, center of gravity is low, HOP ON, ride steadily, folding merit continuous simple, shape is regular.

For overcoming above-mentioned defective, the utility model is by bike portable, by front fork, handlebar and standpipe, clothes hanger, saddle and standpipe, wheel and beaming roller, bottom bracket axle structure and vehicle frame are provided with by balance and angle position, and brake and damping be housed, setting up one in the vehicle frame posterior angle can contract to the back vent of vehicle frame with the wheel chain, vehicle frame and preceding rear vehicle fork are made up of superhard aluminium sheet 7A04, divide installation an anti-flywheel and the crank and chain-wheel (26) of driving in the vehicle frame outer upper, the driving chain back side that drives flywheel (36) contacts, be provided with the combination acceleration chain wheel at crank and chain-wheel and rear drive sprocket sprocket wheel centre portion, and be provided with block in crank end, cylinder and screw thread contact with the nut that the pedal axle is established in addition, front fork and back vent bolt shaft, bearing pin, copper sheathing, spring is connected with front and back, vehicle frame lower part, handlebar and standpipe, saddle and standpipe are by bolt shaft, bearing pin, spring, steel cable, clasp is connected with vehicle frame top front and back position, and each shaft connection place can vertically be rotated.

The technical scheme of taking: car load is pressed force balance and angle position and vehicle frame setting by front fork, handlebar and standpipe, saddle and standpipe, clothes hanger, front-wheel and beaming roller, bottom bracket axle structure.Set up a back vent in the vehicle frame posterior angle, fix the clean glue wheel of 7 inches do not inflate at front and rear fork mouth place.Being come and gone by crank and chain-wheel changes 120 ° of works done up and down, through chain gear to the driving flywheel on vehicle frame right side, acceleration chain wheel, instead drive flywheel, drive and sail trailing wheel and rotate.And with bolt shaft, spring, steel cable, bearing pin, clasp, connect to ground into automatic extending-contracting apparatus at front and rear fork, handlebar, saddle place.And the spring shock absorption setting is housed at back vent and vehicle frame place, front fork mouth place.Vehicle frame is two superhard aluminium sheets, front and standpipe lining, help muscle riveted joint, middle and trailing portion is by duralumin arm-tie rivet clasp, middle lower portion divide and vehicle frame both sides spot welding one heavy wall superduralumin central siphon (because of crank moves up and down, axis is a power upwards, and is little to the welding influence).Outwards be pressed with the convex part for making pressure and torsion be diffused in two vehicle frame posterior angles, suppress oval lightening hole not influencing the stress place.By about two aluminium sheets form firm vehicle frame, and be shaped on composite sprocket axial length hole in both sides, (abbreviating two as) drive shaft hole, Triaxial hole anyway, be shaped on tension wheel shaft slotted hole, chain slotted hole in dextral carriage, the tension wheel shaft slotted hole is in order to adjust chain.Each axis hole angle is: vertical up and down to the back bevel angles 30 ° of two axis holes and central axis hole, three vertical up and down to back bevel angles 22 ° ± 2 with two, anti-drive shaft hole under two in the position of chain back side interlock, the downward 30 ° of positions of tension wheel two axle horizontals above axis.Brake structure is installed on the vehicle frame right side, and the lock pull bar depresses brake foot plate and spurs rocking arm by pull bar in central frame beam position, both sides, makes other end rocking arm tension plug-in strip embrace lock hub on the anti-axle drive shaft, and the lock hub clamps plug-in strip and plays better brake purpose, and can reduce material.The dress standpipe is with bowl, steel ball, retaining are connected up and down in the preceding standpipe lining of vehicle frame, takeing on an end at lower part standpipe and front fork is connected by locknut, the other end and the welding of handlebar lower standing tube, for making vertical rotation that front fork can fastness, front fork and front fork shoulder, front fork and standpipe are divided into three parts, make front fork and front fork shoulder, vertical tube of front fork, handlebar lower standing tube mutually and connect, also to the support of front fork and stable more favourable.Be better welding, handlebar is responsible for down and is adopted 1.5 thick steel pipes; Increase for reducing the weight of parts, at each parts immaterial point place boring loss of weight with set up the high-quality steel.Front fork is pressed into to touch mutually to close in U-shaped top portion and the front fork shoulder by the superhard aluminium sheet of a slice does fulcrum, is in the pulling force phenomenon to turning round bolt shaft under front-wheel and the fork shoulder.For more firm and do not influence pulling force and torsion, at the front fork horizontal aluminium arm-tie of three place's rivet clasps up and down; Be shaped on the triangle lightening hole in both sides.For overcoming little, the power of passing through in travelling of jolting, disappear of wheel, shock absorbing apparatus is installed at the place at the fork mouth: " by about two rocking arms (wrought aluminium spare) end with pitch the mouth live axle and be connected; The other end is connected with spring spiral shell thick stick live axle, and spiral shell thick stick upper end is fixed on the spring perch, makes in the present hole of Luo Gang to slide up and down." fix in rocking arm midway location both sides and front-wheel beaming roller.The oblique angle of front fork be determined at the vertical tube of front fork axle center upwards with handlebar flat spot mutually, be actv. balance angle to front-wheel beaming roller oblique angle 21-23 °.Join with spring and fork shoulder top on front fork top, the spring lower end is connected with live axle with arm-tie car fork, on arm-tie, establish a hook, when (right side) stretches to control position when front fork under vehicle frame, automatically strain by spring, make front fork top and pitch then support mutually in the shoulder, hook hook hole automatic and that fork is takeed on fastens and plays safety effect.Spring and arm-tie are all established in the left and right sides, and the arm-tie in left side is not established hook, and the gown hook also claims auxiliary catch.At the upper and lower Shock-proof bolt axle of the bolt shaft on front fork top (to turning round bolt) copper sheathing is housed all and contacts, strengthen resistance to abrasion.Standpipe and fastening frame one end in the vertical front frame pipe cover are connected and fixed, and the fastening frame other end and lower standing tube are connected and fixed.The stem lower end is pinched by pipe and is connected with standpipe, manage pinch with fastening frame between be connected with fastening frame by live axle pin, clasp, make stem and front fork, vehicle frame become firm one.Simultaneously connect handlebar in the stem upper end by carrier, another side is connected with the handle riser upper end.Connecting bisected handlebar with bearing pin on carrier, in the inner end portion of bisected handlebar, connecting two arm-ties by rivet shaft, arm-tie is connected with steel cable again, and the steel cable other end is connected with fastening frame.Handlebar and standpipe are during from control position angle withdrawal minimum volume: " open that clasp is pinched by pipe and fastening frame between bearing pin be the axle center; press stem to the back lower place; steel cable has loosened the pulling force of bisected handlebar; by the small extension spring of establishing between the bisected handlebar bisected handlebar is pulled to along in the position of standpipe, compact draws close to vehicle frame." be that the axle center is strained handlebar downwards by steel cable when upwards lifting with the bearing pin at handlebar and standpipe, make handlebar get back to the operating angle position naturally, and the fastening clasp.As long as having removed, pressed the handle riser handlebar opens naturally and withdraws.Saddle is connected with the saddle intubate by seatpillar, and the saddle intubate connects bushing pipe, U-shaped support and uses with both sides vehicle frame rear upper part and cooperate the double end stud running-fit to be connected and to add copper sheathing to turning round bolt.Present pipe upper end lined duct welds a U-shaped stay bearing plate again, and the stay bearing plate top is connected with flap under the saddle with bearing pin, fixes a spring on the bearing pin between U-shaped stay bearing plate and the flap.Saddle is fixed on the flap by fastening pinch, double end stud.Side joint at double end stud has steel cable, and the steel cable other end connects to ground.The pipe of present cannula is pinched and is connected a spring, and the angle position live axle that can strain when the spring other end is flexible with the vehicle frame left side is connected.Press from both sides the proper height that can adjust saddle by pipe pinch bolt, steel cable, the angle that recedes must not be greater than 25 °.Saddle and standpipe are determined its operating angle and position by spring, steel cable.When seatpillar is pressed in the front lower place, steel cable has loosened the pulling force to saddle, and U-shaped stay bearing plate under the saddle and the spring handle saddle between the flap are upspring and be folded to a side, is strained downwards by the spring in intubate and vehicle frame left side, make saddle and standpipe by being the axle center, vertically be close on vehicle frame turning round bolt.When folding to operating angle: " upwards removed seatpillar, strained the saddle standpipe backward by the spring on the intubate, the steel cable nature saddle is pulled to control position, can open automatically and turn back as long as removed and pressed saddle standpipe saddle." top of back vent and the vehicle frame convex part at three beaming roller two ends, the back lower place; with being connected and fixed outside shoulder copper sheathing and short steel bushing and two vehicle frames; shoulder copper sheathing and the assembling of back vent close fit, short steel bushing both sides are clamped by two pads, and shoulder copper sheathing endoporus assembles with short steel bushing running-fit character.Adorn a composite sprocket 10 teeth and 18 teeth at the midway location of three beaming rollers, two sprocket wheel hot pressing go out the convex part, the outside and central siphon welding, and inboard dress bowl, steel ball, retaining and cover of dust, net, and on central siphon wall, sprocket wheel, be shaped on lightening hole.For making the diffusion of pressure and torsion: " being shaped on and the corresponding convex in vehicle frame both sides on back vent top ", for making car fork firmly: " two places rivet horizontal duralumin arm-tie up and down, " is for reducing weight: " stick at two sidecars and to be shaped on delthyrium." at inner side and two duralumin arm-ties of car fork both sides riveted joint of back vent, the other end of arm-tie is connected with a pull bar, a pull bar is equipped with spring, end two nut lockings up and down, and the centre is connected and fixed with axle bed.Axle bed is connected on the vehicle frame of the left and right sides by the shoulder copper sheathing, and pull bar can be slided in the axle bed hole, and axle bed can rotate in two vehicle frame crotch.Have slotted hole (being convenient to adjust chain) at back vent mouth place and be connected and fixed with the wheel beaming roller, the width of back vent is greater than the width of front fork damping rocking arm, spring Luo Gang lower end.The wheel hub wheel rim is made by the nylon 1010 material, in rear-wheel hub, be preset with copper nut in order to bolted connection fixed drive sprocket wheel.It is corresponding with the wheel rim through hole to be shaped on through hole at periphery, and wheel rim, wheel hub bolt together clamp does not inflate polyamine fat rubber tire, tire is trapped among outward under the variation of answering in advance is not affected.In the middle of wheel hub, stay shoulder that two mouthfuls of bearings are installed, centre, both sides at bearing are provided with the nylon supporting sleeve, core packing beaming roller, back vent mouth slotted hole and usefulness packing ring are put in beaming roller two ends dresses packing ring oblique angle, locknut is fastening, bearing is fixed by wheel hub shoulder and nylon supporting sleeve can not gone here and there, Buddhist nun's supporting sleeve plays the axially mounting effect of beaming roller again simultaneously.Front-wheel and trailing wheel general assembly except that rear-wheel hub has default copper nut, other universal component.On back vent, be provided with can with flexible sprocket wheel, the chain of back vent: " the composite sprocket of three beaming roller midways location dress; 10 teeth be connected by chain with 24 tooth acceleration chain wheel dextral carriage; The sprocket wheel of 18 teeth is connected with 14 tooth drive sprockets on the trailing wheel, and flexible with back vent." back vent is the axle center with the shoulder copper sheathing on three beaming rollers, short steel bushing; make cushioning effect by a pressure spring of pull bar upper end; when running into when overturning: the back vent arm-tie pulls down a pull bar; the pressure spring of a pull bar upper end is under pressure and contracts to recovery; a pull bar in the axle bed hole to lower slider, thereby play the effect of damping.When back vent when vehicle frame is withdrawn: to the front back vent, the spring that props up the pull bar lower end is under pressure to contract to recovery, after the shaft core position of a pull bar and arm-tie surpasses the maximum pressure corner, can upspring to other direction again, chain, trailing wheel vertically are controlled under the vehicle frame shelves with back vent.Back vent flexible if forward, to the backstop back vent both can, control the operating angle of back vent and the position of withdrawal naturally by a pull bar, the locknut that props up tie rod end also can be adjusted the operating angle of back vent.Aspect driving and transmission: fix by C type bottom bracket axle and crank and 36 tooth sprocket wheels that other establishes, end at crank is provided with block, cylinder, screw thread and shoulder (being made by the 40Mn steel) are established a pedal nut and pedal bolt in addition, (left and right sides pedal is right-hand screw thread) pedal nut laterally is provided with the block of circular hole and rest shoe and crank, cylinder contacts, use plain cushion, spring chair, nut running-fit character is fastened on the cylinder, (make plain cushion, spring chair contacts with shoulder) make pedal on the cylinder can about change 90 °, crank block and the interlock mutually of pedal nut rest shoe when control position.Crank and chain-wheel is driven on the flywheels by two 16 teeth that chain is connected to vehicle frame right upper portion branch, and 16 tooth flywheels are connected on the wrought aluminium chain pulley seat with 24 tooth accelerating pulleys, the anti-drive sprocket of 14 teeth, and are locked by locknut.The chain pulley seat bore portion is adorned two mouthfuls of nylined bearings and is contacted with long steel axle sleeve, passes two vehicle frames with M10 * 1 bolt, with plain cushion, nylon supporting sleeve, nut the sprocket wheel component is fixed on the vehicle frame right side.Above the dextral carriage and the corresponding position of axis establish a nylon tension wheel use to turn round bolt, packing ring is fixed on the vehicle frame.When crank and chain-wheel changes forward: through the 16 tooth flywheels of chain gear to the chain pulley seat, driven to through tension wheel on the 10 tooth sprocket wheels of composite sprocket on three by chain again at 24 tooth accelerating pulleys on the sprocket wheel component, 10 tooth sprocket wheels are connected with trailing wheel through composite sprocket (18 tooth) ...Step on 30 ° of before bottom dead centers when the right side pedal from 30 ° of crank after top dead centres and step on 120 ° of crank angles just, this angle is the most useful work done angle.During to 30 ° of right crank before bottom centers is that left crank is in 30 ° of positions of before top dead center, this steps on left crank at present, make left crank forward 30 ° of before bottom dead centers to from 30 ° of before top dead centers, be counter-rotating at this moment, transmit power to 24 tooth acceleration chain wheel again by anti-driving flywheel: " anti-actuating device is being assembled lock hub, 16 tooth flywheels, anti-drive sprocket by chain pulley seat, and their assembling removes two sprocket wheel components accelerating pulley is housed; Be equipped with on the anti-drive sprocket component outside the lock hub (same position), all the other assemble methods, beaming roller are connected and fixed, parts are identical.Its position under two with the position of interlock mutually, the chain back side.The axle of this anti-actuating device subtracts and is called anti-axle drive shaft." when the chain counter-rotation, be that positive dirction is rotated at this moment at the anti-driving flywheel of chain back side interlock, the anti-drive sprocket of 14 teeth on same component rotates to clockwise direction.Anti-drive the anti-drive sprocket of 14 teeth on the component by chain, be connected with anti-drive sprocket on two components; Drive 24 tooth accelerating pulleys ... beginning to drive trailing wheel again rotates.Only need bipod toward instead stepping on 120 ° of crank angles up and down, remove height and time that sky is sailed 240 ° idle work angle, gone up bottom dead point from.Brake is driven to through the sprocket wheel chain on the lock hub of anti-axle drive shaft by rear wheel, is contacted with the lock hub by the plug-in strip on the dextral carriage ...The running part sprocket wheel is more, mix up the corresponding angle of elasticity, jerk value and the sprocket wheel of chain.When turning back (withdrawal) at car load at first forward by lower saddle seat tube, move clothes hanger forward, the clasp opened under the handlebar presses handle riser, forward back vent kept off vehicle frame below again to the back lower place, open front fork gown hook at last front fork and front-wheel gone into the vehicle frame below to backstop.The part trailing wheel is folded in the vehicle frame crotch, and another part is in the front fork crotch, and some folds into front-wheel in the back vent crotch.It is firm, a compact flat cuboid that car load folding back is shortened into by the spring tension.

The beneficial effect of this utility model: it has kept balance oblique angle, saddle and the front-wheel trailing wheel force balance angle of traditional bicycle handle bar and front-wheel and the advantage of multiple cheap parts.This portable pedal stroke by bike is little, vehicle body is short, center of gravity is low, it is steady, laborsaving to ride, folding merit continuous simple, in light weight, regular, the volume of shape is urinated in carrying, place, can riding at any time when turning back.Also there is the resistant to rust ability while, and can remove often has the puzzlement of pricking tire, gas leakage, is useful for the hard ground grading.It is desirable walking-replacing tool in the middle of people go on business, travel and live.

Description of drawings.

Below in conjunction with accompanying drawing this utility model is further specified:

Fig. 1 is complete vehicle structure figure.

Fig. 2 is vehicle frame, brake structure and each the working hole distribution graph of Fig. 1.

Fig. 3 is the car load of Fig. 1 (withdrawal) the shape figure that turns back.

Fig. 4 is the A-A figure of Fig. 1.

Fig. 5 is the B-B figure of Fig. 1.

Fig. 6 is the I enlarged drawing of Fig. 1.

Fig. 7 is the II enlarged drawing of Fig. 1.

Fig. 8 is the III enlarged drawing of Fig. 1.

Fig. 9 is the VI enlarged drawing of Fig. 1.

Figure 10 is the running part scheme drawing of Fig. 1.

Figure 11 is the clothes hanger structure figure of Fig. 1.

Among the figure: the continuous table of parts title material

Among the figure: the continuous table of parts title material

Annotate: " * " label is the standard universal parts; " △ " label is for providing parts for oneself.

The specific embodiment.

In the embodiment shown in fig. 1: this is portable to be provided with by balance and angle position by front fork (89), handlebar (135), saddle (142), seatpillar (141), clothes hanger (155), front-wheel beaming roller (72), bottom bracket axle structure (24) and vehicle frame (1) (18) by bike.And set up a back vent (64) in the vehicle frame posterior angle, the airless tire (74) that connects two φ 180mm with beaming roller (72) is housed at the fork mouth place of back vent, front fork.By crank and chain-wheel (26) do up and down 120 ° toward reverse action through the chain (28) (29) of Figure 10 drive to the driving flywheel (36), acceleration chain wheel (37) on vehicle frame right side, the anti-flywheel (36) that drives drives and sails trailing wheel and rotate.Lock: " drive on the anti-axle drive shaft lock hub by trailing wheel, again with dextral carriage on plug-in strip, pedal, ' see that Fig. 2 (161) (162) (166) ' contacts ".Use spring (84) (90) (140), steel cable (124), axle and bearing pin (76) (55) (117) (103), clasp (121) to connect into folding and flexible automatically, latching device respectively on front fork, handlebar, standpipe (123), saddle and saddle stay bearing plate (149), saddle intubate (138), clothes hanger, back vent top.And in back vent (64) and vehicle frame retractor device junction; Front fork (89) fork mouth place is provided with damping.Two vehicle frames, stem (123), front fork, back vent, Fig. 2's: " central siphon (3); " among Fig. 4: " sprocket wheel locknut (40), " is 7A04 superduralumin material components.Among Fig. 8: " carrier (133), pipe are pinched (119), fastening frame (115); " among Fig. 4: " chain pulley seat (39); " among Fig. 7: " damping rocking arm (99), spring perch (102), " is 6A02 wrought aluminium parts.Front and back two tires (74) are polyurethane rubber (UR) material.Fig. 5's: " wheel hub (73), wheel rim (75) "; Fig. 7's: " nylon supporting sleeve between wheel hub (105) and each between centers, bearing " is the nylon 1010 material.Fig. 4's: " plain bearing (41) "; Figure 10's: " tension wheel (54) " are nylon (MC) and polyamide (PA) material.Fig. 4's: " left and right sides crank (25) (27), " is the 40Mn material.Handlebar and front fork beaming roller extreme angles: 500mm place and beaming roller are vertical up and down to the front bevel angle 21 °-23 ° behind the handlebar

Saddle is adjusted extreme angles: vertically to the back bevel angles 15 °-25 ° up and down

Rear wheel shock-absorbing forced stroke extreme angles: vertically 45 °-65 ° up and down to the back bevel angles

Wheel base: 900-950mm

Bottom bracket axle is apart from ground level distance limits: 180-220mm

Quality limit: 5-8kg

Crank and chain-wheel and drive wheel transmitting ratio: 1: 7

Be 28 type bicycle scanning frequency: 85-87%

With power and time be ordinary bicycle: 2/3-1/2

Sprocket ratio mathematical expression: (36 ÷, 16 * 24 ÷, 10 * 18 ÷ 14) * (180 * π)

=6.94 change * (tire φ 180mm * 3.14)

3.9 meters of ≈

Be: crank and chain-wheel circles, and wheel travels and approximates 4 meters.

In Fig. 2: the vehicle frame right side (1), a vehicle frame left side (18) add U type duralumin plate (2), (22), (23) usefulness rivet (20) rivet clasp at middle, front and back position.The bottom bracket axle of position spot welding after a while (3) in the middle and lower part, (because of bottom bracket axle is only undertaken power upwards, to its influence not quite) left and right sides vehicle frame posterior angle part outwards extrudes semicircle and circular protrusions part, and be drilled with Triaxial hole (9) at the circular portion midway location, partly be provided with two microscler chain cylindrical voids (11) at the shoulder of right side semi-cylindrical hill.In the vehicle frame rear upper part, be drilled with saddle hole (10), clothes hanger hole (14), saddle extension spring hole (17), two axial length holes (7), steel cable pin-and-hole (16), anti-drive shaft hole (8), tension wheel slotted hole (5), lock pull bar slotted hole (19), prop up pull bar axle bed hole (15) and M5 chain guard screw (12), about two vehicle frames do not bear pressure and the twisting position, be washed into oval loss of weight slotted hole (6), two side positions riveted joint clothes hanger stay bearing plate (13) behind vehicle frame, locate at vehicle frame anterior position vertical pipe sleeve (4), use rivet (20) riveted joint two duralumin linings (114) up and down, two vehicle frames are at preceding vertical pipe sleeve place, inwardly receive the limit, so that draw close with standpipe lining (114).Lock hub (161) is installed on anti-axle drive shaft, plug-in strip (162) and rocking arm (163) are installed on dextral carriage, one end of plug-in strip is used turning round bolt (76) fixing with dextral carriage (1), the other end of plug-in strip is connected with rocking arm (163) one side; rocking arm is connected on the vehicle frame by shoulder bolt (93), and by pull back spring (164) control, the another side of rocking arm is connected with an end of pull bar (165); the other end of pull bar is connected with pedal (166), and the position of pull bar is at both sides central frame beam place.Brake foot plate at the rear side of brake foot plate, is provided with cylindrical pin with external thread (21) by being connected with dextral carriage crossbeam place turning round bolt (76), adjusts the plug-in strip gap to use.

In Fig. 7: preceding vertical pipe sleeve (4), lining (114), bowl (110), vertical tube of front fork (109), steel ball (111), retaining (112), front fork shoulder (97), locknut (113) are connected up and down, front fork (89) top is used and is added shoulder copper bush (65) and front fork shoulder (97) and be connected turning round bolt (76), fasten the front fork shoulder portion to turning round bolt clip, front fork and copper bush external diameter are close fit, in the copper sheathing bore portion be running-fit character to turning round the bolt external diameter, do not have shoulder one side to add packing ring (42) at copper bush, the gap keeps front fork up and downly to get final product.Front fork is three places rivet (20) three horizontal duralumin arm-ties of rivet clasp (96) up and down, crooked shape is made so that shock absorption device is installed in the front fork top and the bottom, front fork mouth position is used and is connected and fixed with damping rocking arm (99) (106) turning round bolt (76), and cooperates installation with shoulder copper bush (65), packing ring.In addition in the lower part of rocking arm with fixing gapped being connected and fixed of Luo Gang (101) square toes circular hole maintenance of shoulder bolt (93) and spring.Spring fixedly Luo Gang put into damping spring with nut (51), packing ring (49), spring chair (50), be fastened on the shoulder of Luo Gang and on the spring perch (102), keep Luo Gang in spring base hole, can slide up and down, spring and upper spring seat, lower gasket support work done, damping rocking arm (99) is the oblique angle setting so that jump obstacle with front fork mouth place, and is fixing in the damping rocking arm midway location left and right sides and front-wheel beaming roller (92) (51).The width of rocking arm (99) lower end and spring Luo Gang (101) lower end is less than the width of back vent crotch position, so that the lower part of front-wheel places in the back vent crotch when folding.Lower support on the top of front fork and fork shoulder (97) inboard, lower part, about a retaining, their contact gap is little.Stamping out in the aluminium sheet both sides of front fork (89) does not influence the triangle of stress lightening hole (79).The folding office of front fork by about two tension springs (90), lower draw-bar (91) (92) (95) connects on both sides, hook (94) and arm-tie (91) are the parts of one.By doing the axle center to turning round bolt (76), tension spring was moved front fork the operating angle position to, is contacted with last fork shoulder inboard through one section maximum tension stroke when front fork was stretched out forward.Hook (94) is passing through nature and hole (98) fastening under the power effect, and the tension spring in left side is also being done same action simultaneously, and two spring arm-ties (91) (92) are connected the front fork both sides with shoulder bolt (103).Front-wheel and back wheel construction except that wheel hub (105) nylon support sleeve (104) is different, other parts are that front and back wheel is general in spare part, introduce front and back two wheel constructions in Fig. 5-6.Weld in order to help plate (108) in fork shoulder (97) and handlebar lower standing tube contact position, and make a plurality of loss of weight circular holes (6) at the tube wall of standpipe (107).

In Fig. 8: at first the end with fastening frame (115) places in the handlebar lower standing tube, use standpipe lining (114), bowl (110), retaining (112), locknut (113), standpipe (109) in the other end and the vertical tube of front fork cover (4) to be connected simultaneously again, and adjust after the angle with front fork fastening with fastening frame bolt (116) while again in lower end front fork shoulder.Pipe is pinched (119) with (120) two on screw, pinches tight upper riser (123) and is connected on the fastening frame (115) with bearing pin (117), use again clasp (121) be fastened on directly over the upright position.In the last end tube head part of the lower standing tube (107) of Fig. 7, reserve slightly in fastening frame (115) top one section so that and upper riser (123) play the role of positioning.The upper end of standpipe (123) is connected with carrier (133), and is fastening with screw (136).Connecting bisected handlebar (135) on the carrier is the axle center with rivet (132), by arm-tie (130) tension downwards: " because handle riser is when stretching out from bottom to top; with bearing pin (117) be the fulcrum axle center; upwards Strain lock is gone up arm-tie (130) at the steel rope sleeve (126) of the steel cable (124) on the bearing pin (118) on steel cable frame (125) through steel cable fix screw (128), lower pulling plate (129), (118) two of arm-tie bearing pins, to bisected handlebar the inner countersunkrivet axle (131) locate " at countersunkrivet (131) axle place.Handlebar (135) is divided into ellipse in carrier inside, and two Outboard Sections are circular.Steel cable (124) is fixed on the steel cable frame (125) with trimming screw (127).Before clasp (121) when handlebar and standpipe (123) are stretched out and be folding, open and use with fastening.The installation of handlebar and standpipe, front fork, lower standing tube, front-wheel is wanted firmly, the gap is suitable, can not wave the slow-witted phenomenon of boundary.It is just portable suitable that the midfeather of preceding vertical pipe sleeve (4) and standpipe (107) is sentenced, and inwardly is shaped on concave portions.

In Fig. 9: suitable short steel pipes (154) (heavy wall slightly) brazing filler metal of endoporus of the lower part of intubate under the saddle (138), weld with U-shaped support (137) again, U-shaped support (137) again with vehicle frame about top, (1) (18) use turning round bolt (76), cooperating thru-bolt (146) to be connected, partly fastening to turning round the bolt shoulder with the vehicle frame left and right sides.Bolt (76) outer radius portion contacts with U-shaped support (137) close fit with shoulder copper sheathing (65) running-fit, shoulder copper sheathing excircle part, be sidelong packing ring (42) (48) in the copper sheathing, and it is fastening to leave appropriate clearance.An intubate part is inserted in seatpillar (141) lower end, with pipe pinch (139), bolt (116) is fastening, and on bolt, connect a tension spring (140) and be connected and fixed with arm-tie (92), shoulder bolt (103).Seatpillar (141) top is with a short tube (153) (heavy wall slightly) brazing filler metal, weld with U-shaped stay bearing plate (149) again, the U-shaped stay bearing plate is analysed plate (143) with bearing pin (147) and upper saddle seat and is connected, go up installation one spring (148) at bearing pin (147), make saddle (142) elastic reaction of separation be arranged so that folding with the U-shaped stay bearing plate, saddle underbeam (145) is clamped by fastening pinch (144) with saddle flap (143), and is fixing with thru-bolt (146).The outside at saddle, the double end stud stationkeeping steel cable (124), and there is the cover of pinching (150) fixing, the other end of steel cable is connected with elastic cylindrical pin (152) with the left and right sides, front lower place vehicle frame and in the lower middle portion of steel cable steel cable adjustable clip-one (151) is installed, and the head part of steel cable is fixed on the adjustable clip-one (151) by screw (128).The saddle part can fold to the place ahead level attitude.Left side tension spring (140) is strained seatpillar backward, and steel cable retracts the saddle of being upspring by spring (148), makes saddle get back to control position naturally.The height of saddle is pinched (139) by steel cable adjustable clip-one (151) and pipe and is adjusted.

In Fig. 5 to Fig. 6: posterior portion, (1) (18) moves with the touch with short steel bushing (66) with copper sheathing (65) and is connected about the vehicle frame at the top of back vent and three beaming roller two ends, copper sheathing (65) contacts with back vent (64) close fit, and accompanies the free gap that two packing rings (52) leave copper sheathing in short steel bushing both sides.For making prestressed dispersion, vehicle body steadily and the placement of driving chain wheel (62), (63), vehicle frame and back vent contact portion are designed to outside protuberance.For making the firm of car fork, angle and inferior horn are fixed two horizontal duralumin arm-ties (78) near the back wheel location with rivet (20) on back vent.Under the situation that does not influence stress, become loss of weight delthyrium (79) and trailing wheel (74) is installed at lower position in the midway location punching out of the both sides of back vent.The pre-buried copper nut of the wheel hub of trailing wheel (73) midway location (70): " copper nut is used for bolt (68) connection and pad spring chair (69) fixed drive sprocket wheel (67) ".Be provided with wheel rim (75) at wheel hub and tire centre portion, accompany tire (74) in the middle of wheel rim and the wheel hub, it is fastening to be sidelong packing ring (35) with bolt (68) at wheel hub and wheel rim two, (the inner circle branch of tire leaves shoulder and fastening prestress thickness).Bearing (71) is installed and is added butter in the centre portion both sides of wheel hub, centre portion leaves shoulder, put into support sleeve (46) at the two bearings centre portion, bearing is sidelong two sections support sleeves (47) outward, in bearing and the support trepanning beaming roller (72) is installed, put packing ring (52) blocks support sleeve (47) and catches up with and tiltedly put into back vent fork mouth slotted hole (77) at the two ends of beaming roller (72), adjust sprocket wheel (67) and the angle of sprocket wheel (63) and the elasticity of chain (29), it is fastening with nut (51) to put packing ring (49) at spindle nose place, the fork mouth outside.The structure of trailing wheel except that the pre-buried copper nut of wheel hub, to leave bolt hole different with nylon support sleeve the bearing, front-wheel is with the nylon support sleeve (104) of Fig. 7, trailing wheel is with nylon support sleeve (47).Wheel rim (75), tire (74), tie bolt (68), bearing (71), beaming roller (72), nylon support sleeve (46) are the general parts of providing for oneself of front and back wheel structure.Rivet two duralumin arm-ties (80) at back vent front lower place two side positions with rivet (20), the arm-tie other end is drawn close to the centre, intermediate gaps partly leaves the leeway that front-wheel turns back, with being connected with a pull bar (81) to turning round bolt (76), and in the junction with no shoulder copper sheathing (88) endoporus with move with the touch turning round bolt, the external diameter of copper sheathing (88) is located close fit with a pull bar tube (82) and is contacted, both sides are lined with plain cushion (52), set level pad (49) on the pull bar, spring (84), plain cushion (49) inserts in pull bar axle bed (85) hole, put into plain cushion (49) again, pressure spring (83), plain cushion (49) is locked with double nuts (51).Pull bar axle bed (85) is at first set up plain cushion (49) and is put into two holes about vehicle frame, use shoulder copper sheathing (86) fixing again, copper sheathing (86) endoporus and axle bed are running-fit, and copper sheathing is fixed on the vehicle frame of the left and right sides with steady nail (87) again, and a pull bar is slided up and down in the axle bed hole.Lower spring (84) plays the stretching elasticity effect to back vent.Upper spring (83) plays the tension and the cushioning effect of back vent and trailing wheel, plays the balance control effect of back vent control position angle simultaneously again.Lower spring when turning back small size (84) branched supporting plate (80) backward is controlled at vehicle frame lower horizontal position to back vent.The three shaft position sprocket assemblies parts that contact with vehicle frame at back vent: " sprocket wheel (63) and sprocket wheel (62) centre portion are hot pressed into machicolated form and central siphon (59) welding; and on shaft wall, bore lightening hole (6); be provided with Air Filter (61) in the beam barrel; the axle bowl (57) of packing in the concave portions of two sprocket wheels and the beam barrel; steel ball (56); beaming roller (55), axle bumper (58), cover of dust (60), beaming roller (55), pin female (51), pad (49), install the back "; put into earlier the axis hole of bottom, vehicle frame both sides branch; going here and there slowly again; adjust to sprocket wheel again and align mutually, joining with back vent; it is fastening to connect to ground to the two end portions balance by one spindle nose.

In Fig. 4: bottom bracket axle structure (24) is installed in superduralumin (heavy wall) central siphon (3), 180 degree are installed crank (25) (27) at relative equilibrium angle, bottom bracket axle two ends, (and sprocket wheel (26) riveted joint back) crank is oblate, root portion is provided with and helps plate (31), and leading portion is provided with cylinder, shoulder and block (32).Both sides pedal axles (34) are right-hand screw thread with axle mother Luo (30), and spindle nut horizontal rounding hole and rest shoe and crank column part cooperate.Pedal folding is during for 90 ° of operating angles, and (level angle) pedal forwards the position of pushing up mutually with the crank block on the cylinder of crank.Pedal spindle nut (30) be inserted in crank head column part put packing ring (49) spring chair (50) with nut (51) with crank Luo line shoulder place fastening, the pedal spindle nut can gappedly be rotated on the cylinder of crank.Crank and chain-wheel (26) contacts with two 16 tooth flywheels (36), and 16 tooth flywheels are connected with 24 tooth acceleration chain wheel (37): go up with the 24 tooth acceleration chain wheel (37) that are being threaded, 16 tooth flywheels (36) and the anti-drive sprocket of 14 teeth (38), lock hub, fastening with locknut (40) with anti-axle drive shaft chain pulley seat (39) at two.(24 teeth (37) and 14 teeth (38) sprocket wheel, lock hub (161) centre portion hot pressing, flange the is made screw thread mutually meshing with chain pulley seat.) the chain pulley seat outer radius portion also makes the screw thread mutually meshing with 16 teeth, bore portion has bearing stand, and two mouthfuls of nylon plain bearings (41) and the assembling of shoulder part close fit are installed.Two and anti-axle drive shaft, shaft portion (53) insert (1) (18) side about vehicle frame, and put nylon support sleeve (45) packing ring (48) two central frame beam positions before insertions.It is fastening with nut (43) left and right sides to be sidelong packing ring (48) outside in addition about vehicle frame, and keeps the size of space of two vehicle frames.On the beaming roller of the outside of two vehicle frames, load onto packing ring (42), long steel axle sleeve (44), again keeping nylined bearing (41) and steel bushing external diameter that suitable tolerance clearance is arranged, on the steel bushing of the beaming roller of packing into (44) with the sprocket assembly that installs in advance.Butter chamber (33) locate to put into butter in the middle of the two bearings, refill Upper gasket (42), maintain suitable endplay and use nut (43) fastening.Anti-actuating device be located at two below, its beaming roller is called anti-axle drive shaft (53), the total component of anti-axle drive shaft and chain pulley seat removes 24 tooth sprocket wheels (37) is housed on two chain pulley seat same positions, and two and the total component of anti-axle drive shaft are universal standard parts and provide parts for oneself outside the anti-axle drive shaft chain pulley seat dress lock hub.

In Figure 10: After Top Center step on right side pedal (34) under 30 ° and forward 30 ° of before bottom dead centers to down to crank, this angle is the most useful work done angle.Crank and chain-wheel (26) is by chain (28) transmission, drive 16 tooth flywheels (36) on two chain pulley seats, 16 tooth flywheels connect 24 tooth accelerating pulleys (37), 24 tooth sprocket wheels are through chain (29) transmission, drive three 10 tooth sprocket wheels (62) through tension wheel (54), three 10 tooth sprocket wheels are connected with 18 tooth sprocket wheels (63), and 18 tooth sprocket wheels drive to rear driving wheel (67) by chain (29) and drive and sail trailing wheel and rotate.In anti-driving process: " left side crank (27) forwards the angle of 30 ° of before top dead centers to just when the right side crank goes to 30 ° of before bottom dead centers; in the left side foot-operated more in the opposite direction; step on 120 ° from 30 ° of before top dead centers to the back lower place; to 30 ° of before bottom dead centers; this moment, crank and chain-wheel changeed in the opposite direction; two 16 tooth flywheels are idle running, and the 16 tooth flywheels of adorning are that the back side contacts with the chain (28) of crank and chain-wheel (26) and two 16 tooth flywheels on anti-axle drive shaft.Because this flywheel is adorned overleaf, it is idle running when crank and chain-wheel just changes, and it is just to change during counter-rotating.14 tooth sprocket wheels on 16 tooth flywheels of anti-axle drive shaft and the same axle are fixedly connected, and this 14 tooth sprocket wheel is connected with two 14 upward fixing tooth sprocket wheels by chain (29) transmission, and two 14 tooth sprocket wheels drive 24 tooth sprocket wheels (37) and begin the work of just changing a job again ...This moment, 16 tooth flywheels on two were in idling conditions ".When passing through the Lixing and sail, to remove crank and chain-wheel (26), chain (28), do not change and the tooth part of two 16 tooth flywheels is not changeed, other sprocket wheel, chain, chain pulley seat part are all changeed.For reducing weight and material, lock partly is arranged on the chain pulley seat of anti-axle drive shaft, chain (29) is had the influence of pulling force when sudden stop, reduces sudden stop as far as possible.Tension wheel (54) is used and is connected on the dextral carriage turning round bolt (76) plain cushion (52), and leaves the diameter of axle and endplay.Littler and the reverse drive for volume after folding, the mode that has adopted the sprocket wheel acceleration, chain is folding with the car fork and the minor diameter wheel is installed.Reverse drive: " be better to use 120 ° of useful work angles, remove 240 ° of idle work angles and temporal waste from." many because of the complex structure sprocket wheel, must guarantee the suitable elasticity and the jerk value of size, angle and chain between each sprocket wheel.

In Figure 11: clothes hanger (155) is welded by φ 6 stainless steel wires, lower part welding supporting leg (158) contacts with clothes hanger stay bearing plate behind the vehicle frame, centre portion welds three road crossbeams (157), trailing portion is shaped on concave portions, close with the seat pipe thread when folding, be connected with bolt shaft (103) with vehicle frame in clothes hanger leading portion boring (156).

In Fig. 3: 1. on the positive car of opening, press with to turning round the seatpillar (141) that bolt (76) is the axle center to the front lower place, strain forward by Fig. 9 tension spring (140), loosened tension steel cable (124), saddle lower spring (148) is that saddle is upspring in the axle center with bearing pin (147), makes saddle (142) and flap (143) place the vehicle frame left side.Clothes hanger (155) is that the axle center is folded to the place ahead with shoulder bolt (103), and the back concave portions of clothes hanger is drawn close with seat pipe (141).2. again (119) fastening clasp (121) being pinched with pipe by preceding standpipe place opens, press backward with bearing pin (117) is the stem (123) in axle center, it is the axle center that bisected handlebar (135) is gone up with rivet (132) at carrier (133), loosened the pulling force of steel cable (124), arm-tie (129), coil tension spring (134) by Fig. 8 pulls to bisected handlebar along in the position of standpipe (123) downwards, and handlebar, standpipe are placed in the supporting leg crotch of clothes hanger.3. the both sides crank is removed to level attitude, right side crank (25) is preceding, and two pedals (34) are upwards removed 90 °.(because of crank has resistance at this moment, oneself can not touched.) 4. position retaining back vent (64) forwards, making back vent is that the effect that axle center and Fig. 6 prop up pull bar (81) spring (84) is rolled under vehicle frame with three beaming rollers (55), trailing wheel (74) one small parts are rolled in the vehicle frame shelves.5. move hook (94) to backstop front fork (89), making front fork is that the axle center relies on below the back vent that has turned back under the vehicle frame with bolt shaft (76) under the effect of extension spring (90), axle (103), in the lower part invagination back vent shelves of wheel (74) and damping.It is square that (the contracting) that car load turns back is shaped as prolate, and available carrying handle (122) also can be placed vehicle frame inferior horn and arm-tie (130) handlebar place downwards, can also arbitrarily place downwards in the left side.The minimum volume of the turning back limit is not more than 500 * 450 * 170mm.

Annotate: to turning round bolt (76): hexagonal flange face screw and other hexagon flange bolt have inner hole thread (M8 * 1) part to turning round, make the shoulder of two bolts clamp fastener, also can be used with double end stud (146), the bolt external diameter and the axle sleeve endoporus that have inner hole thread move with the touch.

Shoulder bolt (93): two kinds on hexagonal flange face head and fluting countersunk head head, screw flight place (M6 * 0.75) is provided with shoulder and clamps fastener with hexagon nut with flange, and screw rod path portion and another parts move with the touch.More than two be the 40Mn material.

Claims

One kind by bike portable, by front fork, handlebar and standpipe, clothes hanger, saddle and standpipe, wheel and beaming roller, bottom bracket axle structure and vehicle frame are provided with by balance and angle position, and brake and damping be housed, it is characterized in that: setting up one can contract to the back vent of vehicle frame with the wheel chain in the vehicle frame posterior angle, vehicle frame and preceding rear vehicle fork are made up of superhard aluminium sheet, divide installation an anti-flywheel and the crank and chain-wheel (26) of driving in the vehicle frame outer upper, the driving chain back side that drives flywheel (36) contacts, be provided with the combination acceleration chain wheel at crank and chain-wheel and rear drive sprocket sprocket wheel centre portion, and be provided with block in crank end, cylinder and screw thread contact with the nut that the pedal axle is established in addition, front fork and back vent bolt shaft, bearing pin, copper sheathing, spring is connected with front and back, vehicle frame lower part, handlebar and standpipe, saddle and standpipe are by bolt shaft, bearing pin, spring, steel cable, clasp is connected with vehicle frame top front and back position, and each shaft connection place can vertically be rotated.
2. according to claim 1 by bike portable, it is characterized in that: said vehicle frame and forward and backward fork are made up of superhard aluminium sheet, wherein vehicle frame is made by two aluminium sheets (1,18), three duralumin arm-ties of riveted joint in the middle of the front and back, lower part bottom bracket axle (3) is by superhard aluminum pipe of heavy wall and vehicle frame spot welding, vertical pipe sleeve place, leading portion position rivets two U-shaped duralumin linings (114) up and down, and forwardly divide two vehicle frames in vertical pipe sleeve place to receive the limit to the inside, touch with the standpipe lining and to close, outwards be pressed into place's convex part two vehicle frame posterior angles.
3. according to claim 1 and 2 by bike portable, it is characterized in that: said back vent is flexible by two superhard aluminium sheets and two horizontal duralumin arm-ties (78), two superduralumin back vents, the arm-tie rivet clasp is supported in location, damping, on the aluminium sheet of both sides, be shaped on delthyrium, fork mouth place is shaped on microscler beaming roller hole, suppress and the corresponding convex part of the convex of vehicle frame on top, inboard greater than the vehicle frame convex outside, and be drilled with Triaxial hole in the convex central position.
4. according to claim 1 and 2 by bike portable, it is characterized in that: said front vehicle fork is formed by the compacting of a slice aluminium sheet, middle compacting delthyrium, three places rivet the horizontal arm-tie of duralumin (96) up and down, and front fork adds that the width of both sides damping must not be greater than the width of back vent crotch.
5. according to claim 1 by bike portable, it is characterized in that: said anti-driving flywheel it and the back side interlock of crank and chain-wheel chain, with driving flywheel is same model flywheel (36), be contained on the chain pulley seat (39) with the lock hub that is provided with screw thread, anti-drive sprocket (38), chain pulley seat is provided with outside thread, the end is fastening with locknut (40), the sprocket wheel endoporus is adorned two plain bearings (41), contact with beaming roller (53) with long steel axle sleeve (44), with nut (43), packing ring (42) be fastened on two in the vehicle frame outside under the position, this axle is called anti-axle drive shaft.
6. according to claim 1 by bike portable, it is characterized in that: said crank and chain-wheel and rear driving wheel centre portion are provided with the acceleration composite sprocket, composite sprocket has 24 tooth sprocket wheels (37), 16 tooth flywheels (36), the anti-drive sprocket of 14 teeth (38), be installed in order and have (39) on the externally threaded chain pulley seat, and lock with nut (40), it is similar to anti-driving chain wheel seat that the bore portion parts are installed, and the anti-drive sprocket of this 14 tooth is connected with chain (29) with 14 tooth sprocket wheels (40) on the anti-axle drive shaft.
7. according to claim 1 or 6 described by bike portable, it is characterized in that: said crank and chain-wheel and back-wheel drive sprocket wheel centre portion are provided with the acceleration chain wheel component, be connected to three combination 10 tooth sprocket wheels (62) again at 24 tooth sprocket wheels of two acceleration chain wheel, 10 tooth sprocket wheels and 18 tooth sprocket wheels are fixed, and 18 tooth sprocket wheels (63) drive to back-wheel drive sprocket wheel (67) by chain (29).
8. according to claim 1 by bike portable, it is characterized in that: said crank section is provided with link stopper, cylinder, shoulder and screw thread, other establishes a nut (30), on nut, laterally be provided with rest shoe and circular hole, circular hole is connected with crank column part running-fit, and be fastened on packing ring, spring chair, nut (51) on the shoulder place screw thread of crank end, pedal nut rest shoe when operating angle is touched mutually with crank link stopper (32) to be closed, pedal nut 90 ° of corners on the crank circle axis of a cylinder, left and right sides pedal is right-hand screw thread.
9. according to claim 1 by bike portable, it is characterized in that: said front fork and back vent bolt shaft, copper sheathing, spring is connected with front and back, vehicle frame lower part, the top of front fork is used and is connected with front fork shoulder (97) running-fit with copper sheathing (65) turning round bolt (76), the top of front fork and front fork shoulder medial support, and with spring (90), hook (94) tension fastens, standpipe (109) in fork shoulder top one end and the vertical pipe sleeve is fastening with locknut (113), the other end and handlebar lower standing tube (107) welding, the front fork lower part is connected with damping rocking arm running-fit, about two rocking arms (99) (106) lower end be connected with shoulder bolt running-fit with spring Luo Gang, Luo Gang is inserted in spring (100) and is fastened on (102) on the spring perch with nut (51), Luo Gang can slide in the present hole, the screw thread place of Luo Gang is provided with shoulder and contacts with plain cushion (52), and the midway location both sides of rocking arm are provided with the beaming roller hole.
10. according to claim 1 or 9 described by bike portable, it is characterized in that: said back vent bolt shaft, copper sheathing, spring is connected with the vehicle frame posterior portion, use Handcuffs bolt shaft (76) at top convex place, copper sheathing (65), short steel axle sleeve (66), by three beaming rollers (55), packing ring (52), spring chair (50), nut (51) is fastened on the convex part vehicle frame outside, and keep back vent between copper sheathing and short steel bushing, can rotate, arm-tie (80) in the back vent riveted joint upward is connected with a pull bar (81) with bolt shaft (76), prop up pull bar bottom shock mount (84), top shock mount (83), middle be connected, prop up a pull bar axle bed (85) and be connected with vehicle frame both sides running-fit with the pull bar axle bed is gapped.
11. it is according to claim 1 by bike portable, it is characterized in that: said handlebar and standpipe, saddle and standpipe, by bolt shaft, bearing pin, spring, steel cable, clasp is connected with vehicle frame top front and back position, handlebar is fixed on standpipe (123) upper end by carrier (133), (119) bearing pin is pinched by pipe in the standpipe lower end, clasp is connected with fastening frame (115), fastening frame one end is connected with standpipe (109), the other end is connected with the handlebar lower standing tube, handlebar is formed by two sections, be connected with carrier by live axle, the inboard of bisected handlebar (135), connect two arm-ties (130) by live axle, other establishes two tension springs (134), and two arm-ties are connected to steel cable, the other end of steel cable is connected with fastening frame, is provided with steel rope sleeve at the midway location of steel cable.
12. according to claim 1 or 11 described by bike portable, it is characterized in that: said saddle and standpipe are used and are connected with the vehicle frame rear upper part with copper sheathing (65) running-fit character with double end stud (146) cooperation turning round bolt shaft (76), being inserted with seatpillar (141) in the intubate (138) pinches fastening with pipe, on the bolt that pipe is pinched, adorn a spring (140), the other end of spring is connected with the vehicle frame left side with the shoulder bolt with arm-tie, the upper end of seatpillar studs with bushing pipe, weld with U type stay bearing plate (149), U type stay bearing plate is connected with bearing pin with saddle flap (143), establishing a spring between U type stay bearing plate and flap is fixed on the bearing pin, saddle is by double end stud, fastening pinch, be fixed on the saddle flap, one end of double end stud connects steel cable, and the steel cable other end connects to ground.
13. according to claim 1 by bike portable, it is characterized in that: said clothes hanger (155) is welded by φ 6 stainless steel wires, and is provided with three road crossbeams.
14. it is according to claim 1 by bike portable, it is characterized in that: said wheel, tire are made by good springiness, wear-resisting, anti-oxidant rubber (74), enclosing thickness in the tire is greater than the thickness of erection work and leaves shoulder, wheel hub and wheel rim are two body components of nylon material (73), fastening by bolt clip bearing up pulley tire, core leaves shoulder two mouthfuls of bearings (71) is installed, middle and periphery is supported by nylon jacket, the place is connected with front and back car fork shaft rollers (72) hole, and it is identical that default copper nut (70) remainder front and back wheel component is housed on rear-wheel hub.