CN206012843U

CN206012843U - The portable bicycle driven by up-down pedal of flexible handle type

Info

Publication number: CN206012843U
Application number: CN201620942278.5U
Authority: CN
Inventors: 庞明方
Original assignee: Taicang Chezhongbao Leisure Products Co Ltd
Current assignee: Taicang Chezhongbao Leisure Products Co Ltd
Priority date: 2016-08-25
Filing date: 2016-08-25
Publication date: 2017-03-15
Anticipated expiration: 2026-08-25

Abstract

A kind of portable bicycle driven by up-down pedal of flexible handle type，Including the handle that stretches、Front fork stem、Side arm、Middle frame、After-frame、Vehicle seat、Front-wheel、Trailing wheel and trample drive mechanism up and down，Flexible handle is by left hand handle、Right handgrip、Upper latch fitting、Lower latch fitting and handle are constituted，Side arm is formed by connecting by rotary part and front-axle beam，Middle frame is by twin beams pipe、First two-tube set、Rear casing、Five-way tube、Dead axle component、Pleated sheet、First latch hook member、Two shock-absorbing polyurethane blocks、Tow wheel and after-frame hook connects are formed，After-frame is by left back breeches pipe、Right back breeches pipe、Second two-tube set and heel brace are constituted，Vehicle seat is by seat pipe、Vehicle seat folded piece、Second latch hook member、Seat bar、Saddle and folding locator card are formed by connecting，Front-wheel is installed on front axle，Trailing wheel is installed on after-frame，Trampling drive mechanism up and down includes two treadle parts、Two pedals、Axis、Two crank axles、Prime sprocket wheel、Prime minor sprocket、Rear class sprocket wheel、Flywheel、Prime chain and rear class chain.

Description

The portable bicycle driven by up-down pedal of flexible handle type

Technical field：

This utility model is related to a kind of folding portable bicycle, and more particularly to a kind of flexible handle type is portable to be trampled up and down Formula bicycle.

Background technology：

Have several money folding bicycles in the market, although have a folding bicycle that folding rate is fast, but due to structure and The reasons such as construction, can not possibly also reach the satisfaction being put in knapsack after folding.

Utility model content：

The purpose of this utility model is to provide for a kind of handlebar in the new type foldable mode of the handle type that stretches, after after-frame is related Wheel collapsed forward, vehicle seat fold the mode with side arm folding linkage, the flexible handle that can be put into after having folded in knapsack The portable bicycle driven by up-down pedal of type.The purpose of this utility model is realized in；The portable upper and lower override type of flexible handle type Bicycle, including flexible handle, front fork stem, side arm, middle frame, after-frame, vehicle seat, front-wheel, trailing wheel and tramples drive mechanism up and down, its It is characterized in that：Flexible handle includes left hand handle, right handgrip, upper latch fitting, lower latch fitting and handle, and left hand is being by pipe with right handgrip Upper end is formed as right-angle bending, left hand with right handgrip right-angle bending at below outside be provided with screwed hole, upper latch fitting is by upper folder Part, banking stop and clamping screw are constituted, and upper clamping piece is the blank of an aluminium extruded type, and respectively there is a upward and downward at the left and right two ends of upper clamping piece Circular hole, be also connected with cracking for upward and downward, the left and right that upper clamping piece upward and downward cracks rearward on the circular hole of two upward and downwards of upper clamping piece The screwed hole of a upward and downward is respectively provided with, and the bottom of the screwed hole of two upward and downward of left and right that upper clamping piece upward and downward cracks rearward passes through two One banking stop of bolt twist-on, allows banking stop to be connected to the bottom side of upper clamping piece, and the centre of upper clamping piece has one to open with upper clamping piece upward and downward The vertical longitudinal hole of seam, the rear end of upper clamping piece longitudinal hole connect the stop nut of a clamping screw, and left hand handle and right handgrip are penetrated In the circular hole of upper clamping piece or so two ends upward and downward, and by left hand with right handgrip right-angle bending at below screwed hole corresponding to upper The bottom side of folder, with two bolts be screwed into respectively left hand with right handgrip right-angle bending at below screwed hole in, by left hand handle Spacing with what right handgrip and upper clamping piece were made to rotate, also, be fastened to left hand with right handgrip on two bolts, and be connected to upper folder The banking stop of the bottom side of part coordinates, can be as left hand spacing when launching with right handgrip, and clamping screw penetrates the vertical of upper clamping piece Xiang Kongzhong, and be screwed in stop nut, tighten clamping screw and can tighten up cracking for upper clamping piece upward and downward, will be left for upper clamping piece locking Handle and right handgrip so that left hand handle and right handgrip are fixed and can not be rotated；Lower latch fitting is made up of lower clamping piece and clamping screw, under Folder is the blank of an aluminium extruded type, and respectively there is a circular hole of a upward and downward at the anterior left and right two ends of lower clamping piece, lower clamping piece anterior two Cracking for upward and downward is connected with the circular hole of upward and downward, and the left end in the middle part of lower clamping piece has the circular hole of a upward and downward, lower clamping piece rear portion There is a circular hole of a upward and downward centre, and the anterior centre of lower clamping piece has one to crack vertical longitudinal hole with the anterior upward and downward of lower clamping piece, The rear end of lower clamping piece longitudinal hole connects the stop nut of a clamping screw, the circular hole and front fork stem of left end upward and downward in the middle part of lower clamping piece Upper end connection, front fork stem is made up of pipe, cylinder and front axle, fills in cylinder in the bottom pore of pipe, the bottom of pipe to And having a cross-perforating together with cylinder, front axle is penetrated in the bottom of pipe and the cross-perforating of cylinder, and wins to the right, left hand handle In the circular hole that right handgrip penetrates lower clamping piece or so two ends upward and downward, clamping screw is penetrated in the longitudinal hole of lower clamping piece, and is screwed into To in stop nut, tighten clamping screw and can tighten up cracking for lower clamping piece upward and downward, lower clamping piece is locked left hand handle and right handgrip, So that left hand handle and right handgrip are fixed and can not be slided up and down, handle is connected to left hand the top with right handgrip, and is located at upper The top of folder；Side arm is made up of rotary part and front-axle beam, and rotary part is installed on the upward and downward circular hole in the middle of lower clamping piece rear portion On, front-axle beam is the slice processing part of aluminium extruded type, and the front end of front-axle beam is in grooved, and the both sides up and down of front-axle beam grooved have mutual to wearing Respectively there is a horizontal perforation in hole, the upper and lower of front-axle beam rear end, front-axle beam grooved mutual to being punched through to locking bolt connection rotation Part；Middle frame includes that twin beams pipe, the first two-tube set, rear casing, Five-way tube, dead axle component, pleated sheet, the first latch hook member, two keep away Shake polyurethane block, tow wheel and rear rack hook, twin beams pipe is made up of two flat tubes of left and right, the front end close-fitting socket first of twin beams pipe is two-tube Set, the first two-tube set are the slice processing parts of an aluminium extruded type, and two slotted holes, two length of the first two-tube set are arranged at the first two-tube set top Circular hole is corresponding with the cast of two flat tube of left and right of twin beams pipe, and the grooved that Open Side Down arranged at the bottom of the first two-tube set, first pair The both sides of pipe box Open Side Down grooved be provided with mutual to perforation, the first two-tube set mutual to be punched through to lock bolt with front Horizontal perforation below beam rear end rotates connection, and rear casing is the cutting workpiece of an aluminium extruded type, and two length are arranged at the bottom of rear casing Circular hole, two slotted holes of rear casing are corresponding with the cast of two flat tube of left and right of twin beams pipe, and opening upwards are arranged at the top of rear casing Grooved, it is mutual to perforation, rear casing opening upwards grooved both sides that the front end of rear casing opening upwards grooved both sides is provided with one Rearward end before and after be respectively provided with one mutual to perforation, rear casing be located at the laterally vertical leading section of two slotted holes be inconjunction with double Beam pipe is provided with a horizontal perforation, is socketed Five-way tube, manages in the cross-perforating in the horizontal upright front portion of two slotted hole of rear casing afterwards The rearward end of set opening upwards grooved both sides front mutual to being punched through two bolt connection dead axle components, dead axle component is by fixed Position axle and two axle bed pieces are constituted, and the rear end of pleated sheet has a cross-perforating, pleated sheet to be connected to rear casing by bolt and nut The back lower place, the axle that tows for towing wheel penetrate the rear mutual to two axle bed of perforation neutralization dead axle component of rear casing grooved both sides rear end In piece metapore, and in the latch hook transverse holes of the first latch hook member, latch hook is rotated with rear casing and is connected, the first latch hook member is by latch hook Constitute with latch hook spring, latch hook front portion has an elongated hole, a bolt to penetrate in the elongated hole of the first latch hook member, and penetrates into latch hook spring In, then be screwed on rear casing in the screwed hole of the rear of bottom land, the first latch hook member can hook lock in the presence of latch hook spring Second two-tube set of after-frame, two shock-absorbing polyurethane blocks are fixed in two slotted holes of rear casing rear end, two shock-absorbing polyurethane blocks with Two nylon plugs in the left back breeches pipe of after-frame and right back breeches pipe front end pore offset cooperation can play shock-absorbing effect, tow wheel by two PU Axle composition is taken turns and tows, two PU wheels are connected to the two ends for towing axle, and after-frame hook connects are in the left side of twin beams pipe；After-frame is by left back fork Pipe, right back breeches pipe, the second two-tube set and heel brace are constituted, and the front end close-fitting of left back breeches pipe and right back breeches pipe is socketed the second two-tube set, The shape and size of the second two-tube set are identical with the first two-tube set, and the second two-tube set is mutual to being punched through to locking bolt and folding The cross-perforating of lamination rear end rotates connection, and heel brace is connected to the left side in the middle part of left back breeches pipe, after after-frame collapsed forward, left back fork Pipe rearward end is connected to the rear rack hook on the twin beams pipe leading section left side and hooks；Vehicle seat includes seat pipe, vehicle seat folded piece, the second latch hook Part, seat bar, saddle and folding locator card, vehicle seat folded piece connect part, connecting rod and U-shaped plug by diapsid, and diapsid connects part and is fastened to The front side of seat pipe lower end, diapsid connect circular hole perforation is rotated mutual with rear casing grooved both sides front end of part and are connected, connecting rod The rearward end slotted hole that connects part with diapsid be connected, in the U-shaped slotted hole for filling in ring part, and positioned at rod rear end portion Lower section, the perforation that two front ends of connecting rod are horizontal with the top of front-axle beam rear end are connected, and are connected with the second latch hook on front side of seat pipe lower end The grooved of part connects part, and the latch hook of the second latch hook member connects with grooved that part both sides are mutual to be connected to perforation, and the second latch hook member is by grooved Even part, latch hook, latch hook spring and interlocking bolt are constituted, and interlocking bolt is fastened to the screwed hole of the front of bottom land on rear casing In, the shape of the latch hook of the second latch hook member is similar to the latch hook of the first latch hook member, and a bolt is penetrated in the elongated hole of the second latch hook member, And penetrate in latch hook spring, then be screwed in seat pipe, the latch hook of the second latch hook member passes through the effect energy and interlocking of interlocking spring The cup head interlocking of bolt, connects in the pore at the top of seat pipe, installs saddle on seat bar, and it is two-tube that folding locator card is connected to first Set back upper place；Front-wheel is installed on front axle, and trailing wheel is installed on the rear end of after-frame, opens the latch hook of the second latch hook member of header board, and by car Seat collapsed forward, in the presence of connecting rod, vehicle seat is inconjunction with side arm, flexible handle, front fork stem and front-wheel together under middle frame Side folds, and reaches perfect folding effect, and in the presence of locator card engaging seat pipe is folded, by vehicle seat, side arm, stretching turns , front fork stem and middle frame are fixed on folded state together；Trample up and down drive mechanism include two treadle parts, two pedals, axis, two Crank axle, prime sprocket wheel, prime minor sprocket, rear class sprocket wheel, flywheel, prime chain and rear class chain, two treadle parts are socketed on fixed The two ends of position axle, central axis are connected in Five-way tube, and two crank axles are installed on the two ends of axis, and the bearing of two crank axles slides It is connected in the slotted hole of two treadle parts, prime sprocket wheel is fixedly connected on the crank axle on the right of two crank axles, two crank axles Crankshaft bearing is connected in two treadle part cast holes, prime minor sprocket and rear class sprocket wheel be socketed on connection former piece and consequent to lock The win to the right of bolt goes out on end, and flywheel is connected to the right side of trailing wheel, and prime chain is wire-wrapped on prime sprocket wheel and prime minor sprocket, Rear class chain is wire-wrapped on rear class sprocket wheel and flywheel.

The beneficial effects of the utility model are：Ingenious cooperation of this utility model by aluminium extrusion so that whole vehicle frame All without electric welding, a kind of new trend of the manufacturing process of bicycle is represented；Handlebar of the present utility model is turned using flexible Form so that the folding of handlebar had reached both most simple, and reached most effective；Front fork stem is connected to the right side in the middle part of lower clamping piece In the upward and downward circular hole at end so that front fork has been accomplished ultimate attainment simple and can coordinate maximally effective folding；Of the present utility model Cooperation of the front tumbler using grooved part and the rotary part for being connected to lower clamping piece rear portion, include in rotary part plane bearing and Shock-absorbing polyurethane cylinder, makes front tumbler both simple and effectively and also with incabloc function；Vehicle frame adopts after-frame forward with Frame is folded, vehicle seat is folded with middle frame and side arm linkage, has reached the minimum and optimization of frame folding；Two length of rear sleeve rear end Shock-absorbing polyurethane block is installed in circular hole, with left back breeches pipe and right back breeches pipe front end vexed plug together after so that after-frame has shock-absorbing work( Energy；In the second two-tube set is mutual to perforation and pleated sheet cross-perforating right side win to locking on bolt end, connect prime Minor sprocket and rear class sprocket wheel so that this utility model after-frame is folded with middle frame and is achieved；Driving side using upper and lower override type Formula, allows the rear end installation of rear sleeve to have no interference when trampled after towing wheel up and down so that this utility model can be dragged after folding OK.

Description of the drawings：

Fig. 1 is this utility model structural representation；

Fig. 2 is the expanded schematic diagram of the flexible handle of this utility model；

Fig. 3 is the gathering schematic diagram of the flexible handle of this utility model；

Fig. 4 is the structural representation of this utility model front-axle beam and both sides piece；

Fig. 5 is this utility model folding process schematic diagram；

Fig. 6 is that this utility model folding finishes figure；

In figure：1 flexible handle, 2 front fork stems, 3 side arms, frame in 4,5 after-frames, 6 cars Seat, 71 front-wheels, 72 trailing wheels, about 8 trample drive mechanism；The handle 1 that wherein stretches also includes：11 left hands , 12 right handgrips, latch fitting on 13,14 times latch fittings, 15 handles；Middle frame 4 also includes：41 twin beams Pipe, 42 first two-tube sets, 43 rear casings, 44 dead axle components, 45 first latch hook members, 46 tow Wheel；Vehicle seat 6 also includes：Vehicle seat 6 also includes：61 seat pipes, 62 vehicle seat folded pieces, 63 second latch hook members, 64 bars, 65 saddles.

Specific embodiment：

According to Fig. 1, Fig. 2 and Fig. 4, the portable bicycle driven by up-down pedal of described flexible handle type, including flexible handle 1, Front fork stem 2, side arm 3, middle frame 4, after-frame 5, vehicle seat 6, front-wheel 71, trailing wheel 72 and trample up and down drive mechanism system 8；

Described flexible handle 1 includes left hand 11, right handgrip 12, upper latch fitting 13, lower latch fitting 14 and handle 15, described Left hand is all to be formed as right-angle bending by the upper end of pipe 11 and described right handgrip 12, and the left hand is 11 and the right hand Outside below at 12 right-angle bendings is respectively provided with a screwed hole, the left hand is 11 and the screwed hole difference of the right handgrip 12 Corresponding to the bottom side of 13 upper clamping piece of upper latch fitting, with two bolts difference twist-on to the left hand straight to 11 and the right handgrip 12 At angular distortion in the screwed hole of lower outer, be connected to the left hand 11 and the right handgrip 12 bolt respectively be located at described The bottom side of 13 upper clamping piece of upper latch fitting, the left hand are respectively provided with a screwed hole the side of 11 and 12 lower end of the right handgrip, described Left hand is screwed into 11 and 12 lower end side screwed hole of the right handgrip after bolt, can be as described left hand 11 and the described right side Handle 12 spacing with what 14 lower clamping piece of lower latch fitting was slided up and down.

Described upper latch fitting 13 is made up of upper clamping piece, banking stop and clamping screw, and described upper clamping piece is an aluminium extruded type Blank, the left and right two ends of the upper clamping piece respectively have the circular hole of a upward and downward, on the circular hole of two upward and downwards of the upper clamping piece also Cracking for upward and downward is connected with, respectively there are the circular hole of a upward and downward, the upper clamping piece in the left and right that the upper clamping piece upward and downward cracks rearward The left side that tapping is cracked rearward into screwed hole, the upper clamping piece upward and downward in the circular hole of two upward and downward of left and right that upward and downward cracks rearward The bottom of the screwed hole of right two upward and downwards allows described banking stop to be connected to described by the banking stop described in two bolt twist-ons one The bottom side of upper clamping piece, and crack rearward positioned at the upper clamping piece upward and downward, described banking stop is two ends portion with holes Part, is connected to the banking stop of the upper clamping piece bottom side, and is connected to the left hand two on 11 and the right handgrip 12 Bolt coordinates, and spacing when 11 and described right handgrip 12 can be launched as described left hand, the centre of the upper clamping piece has One is cracked vertical longitudinal hole with the upper clamping piece upward and downward, and the rear end of the upper clamping piece longitudinal hole is connected with a counterbore, described on The stop nut of clamping screw described in is inlayed in the counterbore of folder, is tightened described clamping screw and can be tightened up upper clamping piece upward and downward Crack, upper clamping piece is locked left hand handle and right handgrip so that left hand handle and right handgrip are fixed and can not be rotated, described locking Bolt by bolt and screws handle and is formed by connecting, and described clamping screw also includes stop nut.

Described lower latch fitting 14 is made up of lower clamping piece and clamping screw, and described lower clamping piece is the blank of an aluminium extruded type, Respectively there is the circular hole of a upward and downward at the anterior left and right two ends of the lower clamping piece, on the circular hole of two anterior upward and downwards of the lower clamping piece also Cracking for upward and downward is connected with, the left end in the middle part of the lower clamping piece has the circular hole of a upward and downward, and left end is upper in the middle part of the lower clamping piece Lower corresponding with the pipe footpath close-fitting of the front fork stem 2 to circular hole, described front fork stem 2 is made up of pipe, cylinder and front axle, pipe Bottom pore in fill in cylinder, the bottom of pipe to and have a cross-perforating together with cylinder, front axle penetrate the bottom of pipe and In the cross-perforating of cylinder and win to the right, the upward and downward circular hole of left end and 2 pipe of the front fork stem in the middle part of the lower clamping piece Upper end close-fitting socket, the centre that there is the circular hole of a upward and downward, the lower clamping piece centre at the lower clamping piece rear portion has one with lower folder Part upward and downward cracks vertical longitudinal hole, and the rear end of the lower clamping piece longitudinal hole is connected with the stop nut of clamping screw described in, Described left hand penetrates 11 and described right handgrip 12 in the circular hole of described lower clamping piece or so two ends upward and downward, described locking Bolt is penetrated in the longitudinal hole of the lower clamping piece, and is screwed in stop nut, is tightened the clamping screw and can be tightened up lower clamping piece Described lower clamping piece is locked described left hand 11 and described right handgrip 12 so that described left hand by cracking for upward and downward 11 and described right handgrip 12 are fixed and can not be slided up and down.

Described handle 15 is a working of plastics, and two lower ends of the handle 15 are respectively connected with the circle of a upward and downward, the handle Corresponding for the external diameter of 11 and the right handgrip 12, the top of the handle 15 is aperture and the left hand of 15 two circle collar aperture The handle of one handle, two collar aperture of the handle 15 are socketed on the left hand respectively under 11 and 12 knee of the right handgrip Side, described handle 15 are located at the top of the upper clamping piece.

Described side arm 3 includes that rotary part, front-axle beam and both sides piece, described rotary part include front axle tube, two depths Ditch bearing, a plane bearing and there is a shock-absorbing polyurethane cylinder, the upper and lower side of front axle tube pore is respectively milled with places rotation zanjon bearing Counterbore, close-fitting is pressed in the upward and downward circular hole in the middle of the lower clamping piece rear portion front axle tube from bottom to top, and two zanjon bearings are inlayed respectively It is embedded in the counterbore of front axle tube upper and lower side, plane bearing is lining on the zanjon bearing of the front axle tube upper end, then by poly- for shock-absorbing ammonia Ester cylinder is put on plane bearing, there is a hole axial direction of shock-absorbing polyurethane cylinder, and by the endoporus of two zanjon bearings, plane bearing Axis hole and the hole of shock-absorbing polyurethane cylinder, corresponding to the upper and lower two sides of front-axle beam front end grooved mutual to perforation, with to lock Described tumbler is connected by bolt with the grooved of the front-axle beam, and described front-axle beam is the slice processing part of aluminium extruded type, described before The front end of beam respectively has a horizontal perforation, middle part to have reinforcement in grooved, the upper and lower of rear end, above the front-axle beam rear end in Between be provided with a grooved gap, the vertical phase of the cross-perforating above the grooved gap above the front-axle beam rear end and the front-axle beam rear end Hand over, respectively there is a circular hole corner of the front-axle beam reinforcement, and in the circular hole of the front-axle beam reinforcement corner tapping into screwed hole, The both sides up and down of the front-axle beam grooved are provided with mutual to perforation, and the both sides up and down of the front-axle beam grooved strike out fillet, side piece It is by the rectangular patch of plastic injection, the corner Ge Youyi holes of side piece rectangle, the hole of side piece rectangle corner and the front-axle beam The screwed hole of reinforcement corner is corresponding, and both sides piece is connected to the right and left of the front-axle beam by bolt.

Described middle frame 4 includes twin beams pipe 41, first two-tube set 42, rear casing 43, Five-way tube, dead axle component 44, folds Piece, the first latch hook member 45, shock-absorbing polyurethane block, wheel 46 and rear rack hook is towed, described twin beams pipe 41 is made up of two flat tubes of left and right, The front end close-fitting of the twin beams pipe 41 is socketed in the two-tube set 42 of described first, and the rear end close-fitting of the twin beams pipe 41 is socketed on In described rear casing 43, the first described two-tube set 42 is the slice processing part of an aluminium extruded type, on the first two-tube set 42 There are two slotted holes in portion, and two slotted holes of the first two-tube set 42 are relative with the cast of two flat tube of left and right of the twin beams pipe 41 Should, the bottom for respectively having a company side, the first two-tube set 42 up and down that the first two-tube set 42 is located between two slotted holes has The grooved that Open Side Down, the both sides of first two-tube 42 Open Side Down the grooved of set be provided with mutual to perforation, described first pair The two sides of Open Side Down the grooved of pipe box 42 strike out fillet, between the first two-tube set, 42 liang of slotted holes on connect on the face on side Left and right be provided with the hole of two upward and downwards, the first two-tube set 42 mutual to being punched through to locking after bolt and the front-axle beam The horizontal perforation in end lower section rotates connection.

Described rear casing 43 is the cutting workpiece of an aluminium extruded type, and two slotted holes, institute are arranged at the bottom of the rear casing 43 The cast for stating two slotted holes of rear casing 43 and two flat tube of left and right of the twin beams pipe 41 is corresponding, and the rear casing 43 is located at two The top for respectively having a company side, the rear casing 43 up and down between slotted hole has the grooved of opening upwards, the rear casing 43 to open The front end of mouth grooved both sides upwards be provided with one mutual to perforation, the rearward end of 43 opening upwards grooved both sides of the rear casing Respectively be provided with front and back one mutual to perforation, between 43 liang of slotted holes of the rear casing on connect side before and after be respectively provided with a upward and downward Screwed hole, between 43 liang of slotted holes of the rear casing on connect the left and right of side rearward end and be respectively provided with a vertical hole, the rear casing 43 Between two slotted holes, the left and right of upper and lower two company side leading section are respectively provided with one mutually vertical to perforation, and the rear casing 43 is located at two The laterally vertical leading section of slotted hole is inconjunction with the rear end of the twin beams pipe 41 and is provided with a horizontal perforation, 43 liang of the rear casing The hole of several upward and downwards, the upper and lower sides of 43 liang of slotted hole rear ends of the rear casing are provided with the rear end face for connecting side under between slotted hole Respectively it is provided with one mutual to perforation, what the upper and lower sides of 43 liang of slotted hole rear ends of the rear casing were mutual each fixes a pin to boring a hole Nail, the side at described Five-way tube or so two ends be respectively provided with upward and downward mutual to wearing screwed hole, described Five-way tube close-fitting is penetrated In the cross-perforating in the horizontal upright front portion of 43 liang of slotted holes of the rear casing, and by two end side surface two of described Five-way tube or so Lower to mutual to wearing screwed hole, corresponding between 43 liang of slotted holes of the rear casing upper and lower two connect side leading section left and right biphase Mutually vertical to perforation, with four bolts will between 43 liang of slotted holes of the rear casing upper and lower two connect side leading section left and right two mutual It is vertical that to perforation, mutual with the Five-way tube or so two end side surfaces, two upward and downward tightens fixation to wearing screwed hole, described after The front mutual dead axle component 44 to being punched through described in two bolt connections of the rearward end of 43 opening upwards grooved both sides of pipe box, Described dead axle component 44 is made up of locating shaft and two axle bed pieces, and locating shaft is the axle of the axial direction with axial threaded hole at two ends, The middle part close-fitting of locating shaft is socketed in the upper hole of two axle bed pieces, and axle bed piece is the slice processing part of an aluminium extruded type, axle bed piece There is the axis hole of one and locating shaft socket upper end, and there are a horizontal screwed hole, the rear end of axle bed piece bottom in the front end of axle bed piece bottom There are transverse holes, axle bed piece bottom surface to have a screwed hole upwards, two axle bed pieces to be socketed on the middle part of locating shaft, two axles by axis hole Seat piece bottom surface screwed hole upwards passes through to connect the two of side rearward end or so between 43 liang of slotted holes of two bolts and the rear casing Vertical hole connection, the horizontal screwed hole of two axle bed piece lower front parts is by two bolts and 43 opening upwards grooved two of the rear casing The previous mutual of side rearward end connects to perforation, and described pleated sheet is the sliced pieces of an aluminium extruded type, after the pleated sheet There is a cross-perforating at end, is provided with the hole of several upward and downwards on the front end face of the pleated sheet, and the front end face of the pleated sheet is several The hole of upward and downward, between 43 liang of slotted holes of the rear casing under connect side the several upward and downwards of rear end face hole corresponding, described Pleated sheet connects the rear end face on side by bolt and nut under being connected between 43 liang of slotted holes of the rear casing.

The first described latch hook member 45 by latch hook and latch hook spring and is constituted, and latch hook is the sliced pieces of an aluminium extruded type, latch hook Middle part carries a horizontal collar aperture, and there is a hook-type rear end of latch hook, and latch hook front portion is provided with a vertical elongated hole, latch hook horizontal To perforation corresponding mutual with after the rearward end of 43 opening upwards grooved both sides of the rear casing one of collar aperture, described tows wheel 46 Tow axle penetrate 43 grooved both sides rear end of the rear casing mutual to perforation in, the transverse holes of two axle bed piece bottom rear ends In the transverse holes of neutralization latch hook, a bolt is penetrated in the vertical elongated hole of latch hook, and is penetrated in latch hook spring, then is screwed into described Connect between 43 liang of slotted holes of rear casing in the screwed hole of rear upward and downward on side, the latch hook of first latch hook member 45 is in latch hook bullet The rectangular opening of 5 second two-tube set of after-frame described in energy hook lock in the presence of spring.

Shock-absorbing polyurethane block described in two is filled in two slotted holes of 43 rear end of the rear casing, and shock-absorbing described in two is poly- Urethane block front end props up the pin positioned at 43 liang of slotted hole rear ends of the rear casing, and two shock-absorbing polyurethane blocks are left back with the after-frame Two nylon plugs in breeches pipe and right back breeches pipe front end pore offset cooperation, can play shock-absorbing effect, and described tows wheel 46 by two PU takes turns and tows axle composition, and the described axle that tows is made up of an axostylus axostyle, two bushing pipes and two stop nuts, and axostylus axostyle is the two of a round bar End is provided with external screw thread, the both ends that two bushing pipes are socketed on axostylus axostyle, then two PU wheels are socketed on the two ends of axostylus axostyle, then locking by two Nut is fastened to the two ends of axostylus axostyle, and described PU wheels are the PU wheels of plastic wheel hub, and the centre of the PU wheels two sides respectively inlays one Deep groove ball bearing, is also lined with a lining ring between two deep groove ball bearings of the PU wheels, and described rear rack hook is made up of nylon Sheet component, the lower end of the rear rack hook is in hook-type, and there are connecting hole, the upper end of the rear rack hook in the upper end of the rear rack hook It is connected with the left side of the twin beams pipe 41 by rivet.

Described after-frame 5 is made up of left back breeches pipe, right back breeches pipe, the second two-tube set and heel brace, and left back breeches pipe is by flat tube system Into U-shaped gap is flattened and be provided with left back breeches pipe rear end, and right back breeches pipe is made up of flat tube and bending stamping, the flat tube of right back breeches pipe Rear end rushes flat to the flat pipe hole corresponding with the metal flat bar of bending stamping, and bending stamping is that a metal flat bar is struck out two is straight The double-bending of the zigzag at angle, and U-shaped gap is provided with bending stamping rear end, after bending stamping close-fitting fills in right back breeches pipe flat tube End is rushed in flat flat pipe hole, and with the reinforcing of two rivets, by bending stamping be fixed on right back breeches pipe flat tube rear end rush flat flat In pore, the front end close-fitting of left back breeches pipe and right back breeches pipe is socketed in the second two-tube set, left back breeches pipe and right back breeches pipe front end Pore in be respectively plugged with the vexed plug of a nylon, the shape and size of the second described two-tube set set 42 two-tube with described first is identical, The second described two-tube set is located at the centre in the upper even side face between two slotted holes and is provided with a rectangular opening, the second two-tube set Rectangular opening is the interlocking hole coordinated with 45 latch hook of the first latch hook member, and the second two-tube set is mutual to being punched through to lock The cross-perforating of bolt and 45 rear end of the pleated sheet is rotated and be connected, connect the described second two-tube set mutual to perforation with described The front axle of the cross-perforating of 45 rear end of pleated sheet, in the described second two-tube set is mutual to perforation wins to the right, and front axle exists The mutual win in perforation to the right being gone out on end of second two-tube set is socketed a bushing pipe, and heel brace is connected in the middle part of left back breeches pipe Left side, after described 5 collapsed forward of after-frame, the rearward end of left back breeches pipe can be connected to the 41 leading section left side of the twin beams pipe Described rear rack hook hook.

Described vehicle seat 6 includes seat pipe 61, vehicle seat folded piece 62, the second latch hook member 63, seat bar 64, saddle 65 and folds determining Position card, in the pore of described 61 lower end of seat pipe, close-fitting fills in a thick-walled tube, 61 bottom leading flank of the seat pipe upper and lower The thick-walled tube that fills in related with trailing flank upper, middle and lower is respectively provided with a screwed hole, the upper end of the seat pipe 61 be provided with one vertical Crack, the upper end of the seat pipe 61 is socketed a pipe clamp, described seat bar 64 is upper bend pipe at a right angle, described seat bar In 64 pores for penetrating 61 upper end of the seat pipe, and cracking for 61 upper end of the seat pipe is tightened up with pipe clamp, by described seat bar 64 Fix with described seat pipe 61, described saddle 64 is installed on the front end of the seat bar 64.

Described vehicle seat folded piece 62 is connected part, connecting rod and U-shaped plug and is constituted by diapsid, and it is an aluminium extruded type that diapsid connects part Sliced pieces, diapsid connects the upper end of part has a slotted hole, lower end to have a circular hole, and diapsid connects part has one positioned at the vertical of long collar aperture Mutual to perforation, diapsid connects part the hole of a longitudinal direction above circular hole, and the longitudinal hole that diapsid connects part is stubborn by bolt It is connected on front side of 61 bottom of the seat pipe in lower screwed hole, diapsid connects the circular hole of part and passes through to locking bolt and the rear casing 43 What grooved both sides front end was mutual rotates connection to perforation, and connecting rod is made up of connecting rod bending part and two connecting rod lining rings, connecting rod bending part It is two leading sections of the front with the rectangle frame of opening, rectangle frame to be bent into by a metal round rod bending is formed still further below, connecting rod The two ends of the inside bending of rectangle frame are drilled with perforation, and connecting rod bending part is penetrated in the slotted hole that diapsid connects part, and makes connecting rod The rearward end of bending part connects the top of the slotted hole of part positioned at diapsid, and U-shaped plug fills in the lower section of the slotted hole of ring part, and position In the lower section of connecting rod bending part rearward end, U-shaped plug is a nylon plug, and the upper side of U-shaped plug has the bar footpath phase with connecting rod bending part Corresponding arc groove, U-shaped also have a longitudinal direction to bore a hole beyond the Great Wall, and longitudinal direction perforation and the diapsid of U-shaped plug connect part and hang down positioned at long collar aperture Corresponding to mutual perforation, U-shaped plug is positioned in the long collar aperture that diapsid connects part by screw, and diapsid is connected part Upper end and 61 bottom of the seat pipe on front side of in screwed hole fix, the two ends of the inside bending in the front end of connecting rod are penetrated before described In the horizontal perforation in the top of beam rear end, and in the grooved gap above the front-axle beam rear end win, by two connecting rod lining ring sets The front end for being connected to connecting rod is won on the two ends in grooved gap above the front-axle beam rear end, and hammers into connecting rod square with two pins Position in the perforation at the inside bending two ends of shape frame.

The second described latch hook member 63 is connected part, latch hook, latch hook spring and interlocking bolt and is constituted by grooved, and it is groove that grooved connects part The cutting off processing part of the aluminium extruded type of type, grooved connect the left and right sides of part grooved and are provided with one mutual to perforation, and grooved connects bottom before part Face is respectively provided with a hole up and down, grooved connect on front side of the holes up and down of the front bottom surface of part and 61 bottom of seat pipe under two Screwed hole is corresponding, and grooved is connected part and is connected with front side of 61 bottom of the seat pipe by two bolts, second latch hook member 63 The shape of latch hook is similar with the latch hook of first latch hook member 45, and the transverse holes of second latch hook member, 63 latch hook pass through to locking spiral shell Bolt and grooved connect that part both sides are mutual be connected to perforation, and interlocking bolt is the bolt of a cup head, described in interlocking bolt is fastened to Connect between 43 liang of slotted holes of rear casing side front upper and lower to screwed hole in, a bolt penetrates 63 latch hook of the second latch hook member Elongated hole in, and penetrate in latch hook spring, then be screwed on front side of 61 bottom of the seat pipe in upper screwed hole, second lock The latch hook of hook 63 can be with the cup head interlocking of interlocking bolt by the effect of interlocking spring, and described folding locator card is by U-shaped In flakes, two connecting holes are arranged at U-shaped nylon card bottom for nylon card and metal, and respectively there is a hole anterior left and right to metal in flakes, metal in flakes after Respectively there is a hole in portion or so, and the holes at metal rear portion in flakes is connected with two connecting holes of U-shaped nylon card bottom by bolt and nut, gold Category holes anterior in flakes by bolt and nut, between 42 liang of slotted holes of set two-tube with described first on connect left and right on the face of side The hole connection of two upward and downwards.

Described front-wheel 71 is 8 inches of wheel, and described front-wheel 71 is installed on front axle, and described trailing wheel 72 is 8 inches Wheel, described trailing wheel 72 are installed on the rear end of left back breeches pipe and right back breeches pipe, and described drive mechanism 8 of trampling up and down includes that two step on Rod member, axis, two crank axles, prime sprocket wheel, two pedals, prime minor sprocket, rear class sprocket wheel, flywheel, prime chain and rear class chain Bar, described treadle part are made up of double-round type component and treadle, and double-round type component is the slice processing part of aluminium extruded type, double-round type structure There is a horizontal circular hole rear end that there is a horizontal slotted hole, double-round type component the front portion of part, respectively opens before and after double-round type component There is a vertical hole, treadle is aluminum rod like parts, and there is a horizontal screwed hole front end of treadle, each with the bottom side of rear end in the middle part of treadle There is a screwed hole upwards, close-fitting is socketed a steel ring in the horizontal circular hole of double-round type component rear end, the two of in the middle part of treadle and rear end Screwed hole upwards is connected with two vertical holes before and after double-round type component by two bolts, the horizontal thread of pedal and treadle front end Hole twist-on, the two ends that the steel ring of the treadle part double-round type component rear end described in two is socketed on locating shaft, and mixed with two bolts Two pads are fastened in the screwed hole of locating shaft two ends, and described axis is connected in described Five-way tube by axis accessory, Crank axle described in two is installed on the two ends of the axis, and described crank axle is made up of crank piece, short axle and bearing, crank piece It is that one end has square hole, the other end to have the part of screwed hole, short axle to be fastened in the screwed hole of crank piece, the endoporus of bearing is socketed on In short axle, so as to form described crank axle, crank axle described in two is connected to the two ends of the axis, and two institutes by square hole The two bearings for stating crank axle are slidably connected in the horizontal slotted hole of treadle part described in two, and described prime sprocket wheel is fixedly connected on On the right crank axle of crank axle described in two, the pedal described in two is connected on the crank axle described in two, described prime Minor sprocket and described rear class sprocket coaxiality cylinder connection, connect the beam barrel of the prime minor sprocket and the rear class sprocket wheel, left end The described prime minor sprocket of connection, the described described rear class sprocket wheel of right-hand member connection, and a bearing, axle are respectively inlayed in beam barrel two ends Cylinder is inconjunction with described prime minor sprocket and described rear class sprocket wheel, be socketed on the connection second two-tube set mutual to perforation With the front axle of the cross-perforating of the pleated sheet rear end, the win in the described second two-tube set is mutual to perforation to the right goes out end On, it is fastened to bolt in the screwed hole of front axle and is positioned, described flywheel is connected to the right side of the trailing wheel 72, described prime Chain is wire-wrapped on described prime sprocket wheel and described prime minor sprocket, and described rear class chain is wire-wrapped in described rear class chain On wheel and described flywheel.

Claims

1. the portable bicycle driven by up-down pedal of a kind of flexible handle type, including flexible handle, front fork stem, side arm, middle frame, after-frame, Vehicle seat, front-wheel, trailing wheel and trample drive mechanism up and down, it is characterized in that：Flexible handle include left hand handle, right handgrip, upper latch fitting, under Latch fitting and handle, left hand being to be formed as right-angle bending by the upper end of pipe with right handgrip, left hand handle and right handgrip right-angle bending The outside of place lower section is provided with screwed hole, and upper latch fitting is made up of upper clamping piece, banking stop and clamping screw, and the left and right two ends of upper clamping piece are each There is the circular hole of a upward and downward, on the circular hole of two upward and downwards of upper clamping piece, be also connected with cracking for upward and downward, upper clamping piece upward and downward cracks Left and right rearward is respectively provided with the screwed hole of a upward and downward, the screwed hole of two upward and downward of left and right that upper clamping piece upward and downward cracks rearward Bottom allows banking stop to be connected to the bottom side of upper clamping piece by two bolt twist-ons, one banking stop, and the centre of upper clamping piece has one with upper folder Part upward and downward cracks vertical longitudinal hole, and the rear end of upper clamping piece longitudinal hole connects the stop nut of a clamping screw, left hand handle and Right handgrip is penetrated in the circular hole of upper clamping piece or so two ends upward and downward, and by left hand with right handgrip right-angle bending at below screw thread Hole corresponding to upper clamping piece bottom side, with two bolts be screwed into respectively left hand with right handgrip right-angle bending at below screwed hole In, by left hand spacing with what right handgrip and upper clamping piece were made to rotate, clamping screw is penetrated in the longitudinal hole of upper clamping piece, and is screwed into In stop nut；Lower latch fitting is made up of lower clamping piece and clamping screw, and respectively there is the circle of a upward and downward at the anterior left and right two ends of lower clamping piece Hole, is connected with cracking for upward and downward on the circular hole of two anterior upward and downwards of lower clamping piece, and the left end in the middle part of lower clamping piece has a upward and downward Circular hole, the centre at lower clamping piece rear portion have the circular hole of a upward and downward, the anterior centre of lower clamping piece to have one with lower clamping piece front portion upward and downward Crack vertical longitudinal hole, and the rear end of lower clamping piece longitudinal hole connects the stop nut of a clamping screw, in the middle part of lower clamping piece on left end Lower to circular hole be connected with the upper end of front fork stem, front fork stem is made up of pipe, cylinder and front axle, is filled in the bottom pore of pipe Cylinder, the bottom of pipe to and have a cross-perforating, front axle to penetrate in the bottom of pipe and the cross-perforating of cylinder together with cylinder, And win to the right, in the circular hole for penetrating lower clamping piece or so two ends upward and downward with right handgrip, clamping screw penetrates lower clamping piece to left hand Longitudinal hole in, and be screwed in stop nut, handle is connected to left hand the top with right handgrip, and positioned at the upper of upper clamping piece Side；Side arm is made up of rotary part and front-axle beam, and rotary part is installed on the upward and downward circular hole in the middle of lower clamping piece rear portion, front-axle beam Front end is in grooved, and the both sides up and down of front-axle beam grooved have mutual to perforation, and the upper and lower of front-axle beam rear end respectively has a horizontal perforation, Front-axle beam grooved mutual to be punched through to lock bolt connection rotary part；Middle frame includes twin beams pipe, the first two-tube set, rear pipe Set, Five-way tube, dead axle component, pleated sheet, the first latch hook member, two shock-absorbing polyurethane blocks, tow wheel and rear rack hook, twin beams pipe is by a left side Right two flat tubes are constituted, and the front end close-fitting of twin beams pipe is socketed the first two-tube set, and two slotted holes are arranged at the first two-tube set top, and first is two-tube Two slotted holes of set are corresponding with the cast of two flat tube of left and right of twin beams pipe, and the groove that Open Side Down is arranged at the bottom of the first two-tube set Type, the both sides of the first two-tube set Open Side Down grooved are provided with mutual to perforation, mutual right to being punched through of the first two-tube set Lock bolt is rotated with horizontal perforation below front-axle beam rear end and is connected, and two slotted holes are arranged at the bottom of rear casing, and the two of rear casing are oval Hole is corresponding with the cast of two flat tube of left and right of twin beams pipe, and the grooved of opening upwards arranged at the top of rear casing, rear casing opening to The front end of upper grooved both sides is provided with one mutual to perforation, is respectively provided with before and after the rearward end of rear casing opening upwards grooved both sides One is mutual to perforation, and rear casing is located at the laterally vertical leading section of two slotted holes and is inconjunction with twin beams pipe and is provided with one horizontal to be worn Hole, is socketed Five-way tube, rear casing opening upwards grooved both sides in the cross-perforating in the horizontal upright front portion of two slotted hole of rear casing Rearward end front mutual to being punched through two bolt connection dead axle components, dead axle component is by locating shaft and two axle bed piece structures Into the rear end of pleated sheet has a cross-perforating, pleated sheet to be connected to the back lower place of rear casing by bolt and nut, tows dragging for wheel Row axle penetrates the rear mutual of rear casing grooved both sides rear end and perforation is neutralized in two axle bed piece metapore of dead axle component, and first In the latch hook transverse holes of latch hook member, latch hook is rotated with rear casing and is connected, the first latch hook member is made up of latch hook and latch hook spring, lock There is an elongated hole hook front portion, and a bolt is penetrated in the elongated hole of the first latch hook member, and is penetrated in latch hook spring, then is screwed into rear casing In the screwed hole of the rear of upper bottom land, two shock-absorbing polyurethane blocks are fixed in two slotted holes of rear casing rear end, tow wheel by Two PU take turns and tow axle composition, and two PU wheels are connected to the two ends for towing axle, and after-frame hook connects are in the left side of twin beams pipe；After-frame is by a left side Back breeches pipe, right back breeches pipe, the second two-tube set and heel brace are constituted, and the front end close-fitting socket second of left back breeches pipe and right back breeches pipe is two-tube Set, the shape and size of the second two-tube set are identical with the first two-tube set, second two-tube cover mutual to being punched through to lock bolt Rotate with the cross-perforating of pleated sheet rear end and be connected, heel brace is connected to the left side in the middle part of left back breeches pipe；Vehicle seat includes seat pipe, vehicle seat Folded piece, the second latch hook member, seat bar, saddle and folding locator card, vehicle seat folded piece connects part, connecting rod and U-shaped plug by diapsid, double Pass connects the front side that part is fastened to seat pipe lower end, diapsid connect part circular hole mutual with rear casing grooved both sides front end to perforation Connection is rotated, the slotted hole that the rearward end of connecting rod connects part with diapsid is connected, in the U-shaped slotted hole for filling in ring part, and position In the lower section in rod rear end portion, the perforation that two front ends of connecting rod are horizontal with the top of front-axle beam rear end is connected, the front side of seat pipe lower end The grooved for being connected with the second latch hook member connects part, and the latch hook of the second latch hook member connects with grooved that part both sides are mutual to be connected to perforation, the Two latch hook members are connected part, latch hook, latch hook spring and interlocking bolt and are constituted by grooved, and interlocking bolt is fastened on rear casing before bottom land In the screwed hole at position, the shape of the latch hook of the second latch hook member is similar to the latch hook of the first latch hook member, and a bolt penetrates the second lock In the elongated hole of hook, and penetrate in latch hook spring, then be screwed in seat pipe, connect in the pore at the top of seat pipe, pacify on seat bar Dress saddle, folds locator card and is connected to the first two-tube set back upper place；Front-wheel is installed on front axle, and trailing wheel is installed on the rear end of after-frame, Trampling drive mechanism up and down includes two treadle parts, two pedals, axis, two crank axles, prime sprocket wheel, prime minor sprocket, rear class chain Wheel, flywheel, prime chain and rear class chain, two treadle parts are socketed on the two ends of locating shaft, and central axis are connected in Five-way tube, Two crank axles are installed on the two ends of axis, and the bearing of two crank axles is slidably connected in the slotted hole of two treadle parts, prime sprocket wheel It is fixedly connected on the crank axle on the right of two crank axles, the crankshaft bearing of two crank axles is connected in two treadle part cast holes, front Level minor sprocket and rear class sprocket wheel are socketed on connection former piece and the win to the right to locking bolt of consequent goes out on end, and flywheel is connected to trailing wheel Right side, prime chain is wire-wrapped on prime sprocket wheel and prime minor sprocket, and rear class chain is wire-wrapped on rear class sprocket wheel and flywheel.

2. the portable bicycle driven by up-down pedal of flexible handle type according to claim 1, is characterized in that：The left hand handle and The screwed hole of the right handgrip corresponds respectively to the bottom side of the upper latch fitting upper clamping piece, the left hand handle and the right handgrip lower end After flank threads hole is screwed into bolt, can as described left hand with described right handgrip and the lower latch fitting lower clamping piece on glide Dynamic is spacing, is connected to the banking stop of the upper clamping piece bottom side, be connected to the left hand with the right handgrip on Two bolts coordinate, can be as described left hand spacing when launching with described right handgrip, after the upper clamping piece longitudinal hole End is connected with a counterbore, inlays the stop nut of clamping screw described in the counterbore of the upper clamping piece, described clamping screw by Bolt and screw handle and be formed by connecting, described clamping screw also includes stop nut, and left end is upper and lower in the middle part of the lower clamping piece Corresponding with the pipe footpath close-fitting of the front fork stem to circular hole, the upward and downward circular hole of left end and the front fork stem in the middle part of the lower clamping piece The upper end close-fitting socket of pipe, described handle is a working of plastics, and two lower ends of the handle are respectively connected with the circle of a upward and downward, institute Aperture and the left hand of two circle collar aperture of handle are stated corresponding with the external diameter of the right handgrip, the top of the handle is one The handle of handle.

3. the portable bicycle driven by up-down pedal of flexible handle type according to claim 1, is characterized in that：Described rotating part Part includes front axle tube, two zanjon bearings, a plane bearing and has a shock-absorbing polyurethane cylinder, each milling of the upper and lower side of front axle tube pore There is the counterbore for placing rotation zanjon bearing, close-fitting is pressed into the upward and downward circular hole in the middle of the lower clamping piece rear portion to front axle tube from bottom to top In, two zanjon bearings are embedded in the counterbore of front axle tube upper and lower side respectively, and plane bearing is lining in the zanjon axle of the front axle tube upper end On holding, then shock-absorbing polyurethane cylinder is put on plane bearing, there is a hole axial direction of shock-absorbing polyurethane cylinder, and by two zanjons The hole of the endoporus of bearing, the axis hole of plane bearing and shock-absorbing polyurethane cylinder, corresponding to the upper and lower two sides of front-axle beam front end grooved Mutual to perforation, with being connected described tumbler with the grooved of the front-axle beam to locking bolt, described front-axle beam is aluminium extruded type Slice processing part, the front end of the front-axle beam is in grooved, the upper and lower of rear end respectively has a horizontal perforation, middle part to have reinforcement, Centre above the front-axle beam rear end is provided with a grooved gap, the grooved gap above the front-axle beam rear end and the front-axle beam rear end The cross-perforating of top is vertical intersecting, and respectively there is a circular hole corner of the front-axle beam reinforcement, and in the front-axle beam reinforcement corner Circular hole in tapping into screwed hole, the both sides up and down of the front-axle beam grooved be provided with mutual to perforation, the front-axle beam grooved upper Lower both sides strike out fillet, and side piece is by the rectangular patch of plastic injection, the corner Ge Youyi holes of side piece rectangle, side piece square The hole of shape corner is corresponding with the screwed hole of the front-axle beam reinforcement corner, and both sides piece is connected to the front-axle beam by bolt The right and left.

4. the portable bicycle driven by up-down pedal of flexible handle type according to claim 1, is characterized in that：Described first is two-tube Set is located at respectively has a company side between two slotted holes up and down, and the two sides of the first two-tube set Open Side Down grooved strike out circle Angle, the rear casing be located at two slotted holes between respectively have a company side up and down, between two slotted hole of the rear casing on connect side Respectively be provided with the screwed hole of a upward and downward in front and back, between two slotted hole of the rear casing on connect side rearward end left and right be respectively provided with one erect Xiang Kong, between two slotted hole of the rear casing, to be respectively provided with one mutually vertical to perforation, institute for the left and right of upper and lower two company side leading section The hole of several upward and downwards, two slotted hole rear end of the rear casing is provided with the rear end face for connecting side under stating between two slotted hole of rear casing Upper and lower sides be respectively provided with one mutual to perforation, the upper and lower sides of two slotted hole rear end of the rear casing mutual to each fixation of boring a hole The side at one pin, the Five-way tube or so two ends be respectively provided with upward and downward mutual to wearing screwed hole, described Five-way tube close-fitting Penetrate in the cross-perforating in the horizontal upright front portion of two slotted hole of the rear casing, and by two end side surface two of described Five-way tube or so Upward and downward mutual to wearing screwed hole, corresponding between two slotted hole of the rear casing upper and lower two connect side leading section left and right biphase Mutually vertical to perforation, with four bolts will between two slotted hole of the rear casing upper and lower two connect side leading section left and right two mutually perpendicular To perforation, mutual with the Five-way tube or so two end side surfaces, two upward and downward tightens fixation, described folding to wearing screwed hole Lamination is the sliced pieces of an aluminium extruded type, is provided with the hole of several upward and downwards, before the pleated sheet on the front end face of the pleated sheet The hole of the several upward and downwards of end face, between two slotted hole of the rear casing under connect side the several upward and downwards of rear end face hole relative Should.

5. the portable bicycle driven by up-down pedal of flexible handle type according to claim 1, is characterized in that：The rear casing is opened The front mutual dead axle component to being punched through described in two bolt connections of the mouth rearward end of grooved both sides upwards, described dead axle Component is made up of locating shaft and two axle bed pieces, locating shaft be two ends axial direction with axial threaded hole axle, the middle part of locating shaft Close-fitting is socketed in the upper hole of two axle bed pieces, and axle bed piece is the slice processing part of an aluminium extruded type, the upper end of axle bed piece have one with fixed The axis hole of position axle socket, there are transverse holes, axle in the rear end that there is a horizontal screwed hole, axle bed piece bottom the front end of axle bed piece bottom Seat piece bottom surface has a screwed hole upwards, two axle bed pieces to be socketed on the middle part of locating shaft by axis hole, and two axle bed piece bottom surfaces are upwards Screwed hole by connecting two vertical holes connections of side rearward end or so, two axles between two slotted hole of two bolts and the rear casing The horizontal screwed hole of seat piece lower front part passes through the previous phase of two bolts and rear casing opening upwards grooved both sides rearward end Mutual connects to perforation.

6. the portable bicycle driven by up-down pedal of flexible handle type according to claim 1, is characterized in that：The wheel of towing Tow axle penetrate the rear casing grooved both sides rear end mutual to perforation in, the transverse holes neutralization of two axle bed piece bottom rear ends In the transverse holes of latch hook, a bolt is penetrated in the vertical elongated hole of latch hook, and is penetrated in latch hook spring, then is screwed into the rear pipe Cover in the screwed hole of rear upward and downward for connecting side between two slotted holes, described to tow axle locking by an axostylus axostyle, two bushing pipes and two Nut is constituted, and axostylus axostyle is that the two ends of a round bar are provided with external screw thread, the both ends that two bushing pipes are socketed on axostylus axostyle, described rear rack hook It is the sheet component being made up of nylon, the lower end of the rear rack hook is in hook-type, and the upper end of the rear rack hook is by rivet and institute State the connection of the twin beams pipe left side.

7. the portable bicycle driven by up-down pedal of flexible handle type according to claim 1, is characterized in that：Left back breeches pipe is by flat Pipe is made, and U-shaped gap is flattened and be provided with left back breeches pipe rear end, and right back breeches pipe is made up of flat tube and bending stamping, right back breeches pipe Flat tube rear end rushes the flat extremely flat pipe hole corresponding with the metal flat bar of bending stamping, and bending stamping is to strike out a metal flat bar The double-bending of birectangular zigzag, and U-shaped gap is provided with bending stamping rear end, it is flat that bending stamping close-fitting fills in right back breeches pipe Pipe rear end is rushed in flat flat pipe hole, and with two rivets reinforce, by bending stamping be fixed on right back breeches pipe flat tube rear end rush flat Flat pipe hole in, described second two-tube set is located at the centre in the upper even side face between two slotted holes and is provided with a rectangular opening, described The rectangular opening of the second two-tube set is the interlocking hole coordinated with the first latch hook member latch hook.

8. the portable bicycle driven by up-down pedal of flexible handle type according to claim 1, is characterized in that：Under described seat pipe In the pore at end, close-fitting fills in a thick-walled tube, and the upper and lower of seat pipe bottom leading flank is filled in trailing flank upper, middle and lower is related Thick-walled tube be respectively provided with a screwed hole, the upper end of the seat pipe be provided with one vertical crack, the upper end socket of the seat pipe One pipe clamp, described seat bar is upper bend pipe at a right angle, and diapsid connects the sliced pieces that part is an aluminium extruded type, and diapsid connects The upper end of part has a slotted hole, lower end to have a circular hole, diapsid connect part positioned at long collar aperture vertical have one mutual to perforation, double Pass connects part has the hole of a longitudinal direction, diapsid to connect the longitudinal hole of part and be fastened to the seat pipe lower end by bolt above circular hole On front side of portion in lower screwed hole.

9. the portable bicycle driven by up-down pedal of flexible handle type according to claim 1, is characterized in that：Connecting rod bending part is Rectangle frame of the front with opening is bent into by a metal round rod, bending is formed still further below for two leading sections of rectangle frame, connecting rod square The two ends of the inside bending of shape frame are drilled with perforation, and connecting rod bending part is penetrated in the slotted hole that diapsid connects part, makes connecting rod bending The rearward end of part connects the top of the slotted hole of part positioned at diapsid, and diapsid is connected the upper end and the seat pipe bottom of part In front side, screwed hole is fixed, and the two ends of the inside bending in the front end of connecting rod are penetrated in the horizontal perforation in the top of the front-axle beam rear end In, and in the grooved gap above the front-axle beam rear end win, the front end that two connecting rod lining rings are socketed on connecting rod is located at described Win on the two ends in grooved gap above front-axle beam rear end, and the perforation at the inside bending two ends of connecting rod rectangle frame is hammered into two pins Middle positioning, described folding locator card by U-shaped nylon card and metal in flakes, metal in flakes rear portion holes by bolt and nut with The two connecting holes connection of U-shaped nylon card bottom, metal holes anterior in flakes is by bolt and nut, set two two-tube with described first The hole for connecting two upward and downwards of the left and right on the face of side between slotted hole connects.

10. the portable bicycle driven by up-down pedal of flexible handle type according to claim 1, is characterized in that：Described treadle Part is made up of double-round type component and treadle, and double-round type component is the slice processing part of aluminium extruded type, and the front portion of double-round type component has one Horizontal slotted hole, the rear end of double-round type component have a horizontal circular hole, are respectively provided with a vertical hole before and after double-round type component, Treadle is aluminum rod like parts, and there is a horizontal screwed hole front end of treadle, respectively has a spiral shell upwards with the bottom side of rear end in the middle part of treadle Pit, in the horizontal circular hole of double-round type component rear end, close-fitting is socketed a steel ring, two screwed holes upwards of in the middle part of treadle and rear end It is connected with two vertical holes before and after double-round type component by two bolts, crank piece is that one end has square hole, the other end to have screwed hole Part, short axle are fastened in the screwed hole of crank piece, and the endoporus of bearing is socketed in short axle, and described in two, crank axle is connected by square hole The two ends of the axis are connected to, and the two bearings of crank axle described in two are slidably connected to the horizontal slotted hole of treadle part described in two In.