CN103481985A

CN103481985A - Double-leg alternate pedal scooter

Info

Publication number: CN103481985A
Application number: CN201310480753.2A
Authority: CN
Inventors: 庞明方
Original assignee: Taicang Chezhongbao Leisure Products Co Ltd
Current assignee: Zhejiang Xitang Industry Co., Ltd
Priority date: 2013-10-15
Filing date: 2013-10-15
Publication date: 2014-01-01
Anticipated expiration: 2033-10-15
Also published as: CN103481985B

Abstract

The invention discloses a double-leg alternate pedal scooter. The double-leg alternate pedal scooter comprises a front fork component, a handlebar, a scooter body, a driving mechanism, a front wheel, three universal wheels and a brake, wherein a square-tube-shaped buckle hole of a vertical round pipe of the handlebar is buckled on an elastic buckle in a square tube with a hole of the front fork component; a first revolving drum of the scooter body is sleeved on an L-shaped piece of the front fork component, round steel of a frame-shaped piece of the driving mechanism penetrates through a third revolving drum of the scooter body, and the front end of an oscillating bar of the driving mechanism directly penetrates through a second revolving drum of the scooter body; the front wheel is connected with a front fork; the three universal wheels are arranged on the front and rear ends of the scooter body and the rear end of the oscillating bar; the brake comprises a brake handle, a brake piece, a brake line, a spring and a bolt with a hole, wherein the brake piece is connected with the front fork; one end of the brake line is connected with the brake handle, and the other end of the brake line is connected with the brake piece.

Description

Both feet are treading type scooter alternately

Technical field:

The present invention relates to a kind of Kickboard Scooter, particularly a kind of both feet stand on two pedals of this Kickboard Scooter, and bipod is stepped on the both feet that just can make it to move ahead under replacing and replaced treading type scooter.

Technical background:

Although existing upper and lower treading type scooter in the market, due to complex structure and and imperfection, therefore affected price and the market of upper and lower treading type scooter.

Summary of the invention:

The objective of the invention is to provide that a kind of structure is as far as possible simply ingenious, the lowest possible both feet of cost replace treading type scooter.The object of the present invention is achieved like this: both feet are treading type scooter alternately, comprise the front fork member, handlebar, vehicle body, driver train, front-wheel, three cardan wheels and brake, it is characterized in that: the front fork member is by front fork, L shaped and square pipes with holes formation, front fork is that the middle part of a band iron has two downward right-angle bendings, and then punching has one mutual to perforation below band iron two downward right-angle folding crooks, it is one mutual to perforation with rush fillet that two lower ends punchings after a band iron bending have, thereby make described front fork, in the front at described front fork top along welding one sheetmetal with holes, L shaped is to be bent into L shaped with the round steel of 10 millimeters of φ, a tapped bore is opened at center at a L shaped end end points, the top that is welded in front fork by L shaped, and by a L shaped end with threaded hole upwards, the L shaped bending part made progress at a L shaped end is socketed a metal lining ring, with square pipes with holes, vertically be welded on L shaped again, and be positioned at L shaped the top with the front fork weld, square pipes with holes is that the top of one section square tube is with a circular hole, in the circular hole of square pipes with holes and in the pore of square pipes with holes, snap-on is installed, handlebar is the intermediate vertical welding one vertical pipe of a horizontal pipe, vertical pipe is a pipe fitting that is pressed into square-tube-shaped of below, one side of the square-tube-shaped of vertical pipe is with button hole, handlebar, by the button hole of a side of the square-tube-shaped of a vertical pipe, is buckled on the snap-on in front fork member square pipes with holes, vehicle body comprises three rotating cylinders, front pipe, rear pipe, U-shaped pipe and two barrels, rotating cylinder comprises the metal pipeloop, plastic backing member and rotating cylinder bearing, the metal pipeloop is the blank of metal circular tube, plastic backing member is that a counterbore respectively is with at a two, the middle tubular plastic part with through hole of two counterbores, the circumference of one end of plastic backing member is also with chimb, plastic backing member is pressed into to the metal pipeloop, again two rotating drum shaft pressure-bearings are entered in the counterbore at plastic backing member two and become at once described rotating cylinder, the metal pipeloop of the vertical welding one described rotating cylinder of the front end of front pipe, the rotating cylinder be connected with front pipe front end is called the first rotating cylinder, the metal pipeloop of the vertical welding one described rotating cylinder in the rear end of front pipe, the rotating cylinder be connected with front pipe rear end is called the second rotating cylinder, a remaining rotating cylinder is called the 3rd rotating cylinder, the metal pipeloop of described the first rotating cylinder becomes parallel shape and the welding of front pipe with the metal pipeloop of described the second rotating cylinder, and allow the pore of metal pipeloop of the metal pipeloop of described the first rotating cylinder and described the second rotating cylinder become upward and downward, the metal tube lap welding of the front end of rear pipe and described the second rotating cylinder connects, welding in the middle of the rear end of rear pipe and U-shaped pipe, the metal pipeloop of described the 3rd rotating cylinder is welded in the top of rear pipe, and make the metal pipeloop of described the 3rd rotating cylinder parallel with rear pipe, two barrels are welded at the two ends of U-shaped pipe, barrel is that in one section seamless circular pipe orifice, tapping becomes tapped bore, weld two barrels with the two ends of U-shaped pipe and present the inclination after front lower, metal pipeloop at three described rotating cylinders is pressed into three plastic backing members again, respectively be pressed into two rotating cylinder bearings at three plastic backing members again, the bearing bore of described vehicle body by the first rotating cylinder is socketed on of tapped bore of L shaped of described front fork member, and be fastened to a bolt in the tapped bore of L shaped and locate, driver train comprises frame section, the U-shaped band iron, left and right pedal and fork, frame section is to be bent into the moulding of bent font frame with the round steel of 10 millimeters of Φ, the end points of the centre at the bottom of bent font circle and one section one end of the vertical welding of bent font frame has the round steel of 10 millimeters of Φ with threaded hole again, socket one lining ring on round steel with threaded hole, at the bottom of the frame of the bent font frame of frame section, with the U-shaped band iron, weld, the U-shaped band iron is to carry out arc-shaped bend to U-shaped with a band iron along the in-plane of band iron, band iron face upper punch at two of U-shaped has connecting bore again, the connecting bore at two of U-shaped band iron is connected with the left and right pedal by bolt, on frame section after welding with the U-shaped band iron, round steel with threaded hole penetrates in the bearing bore of described the 3rd rotating cylinder, and be fastened to a bolt in the tapped bore of round steel with threaded hole on frame section and locate, fork welds a barrel by the round steel rear end of 10 millimeters of the Φ of a front end right-angle bending and forms, barrel is that in one section seamless circular pipe orifice, tapping becomes tapped bore, the barrel of fork rear end is presented the inclination after front lower, the end points of fork front end right-angle bending is threaded hole, fork front end right-angle folding crook is socketed a lining ring, fork front end right-angle bending penetrates in the bearing bore of described the second rotating cylinder from bottom to top, and twist to connect in fork front end tapped bore with a bolt and locate, front-wheel is the PU wheel that middle two sides respectively is inlaid with a bearing, front-wheel is by perforation be connected mutual with front fork two lower ends to the lock bolt, cardan wheel comprises: the wheel fork part, wheel and to the lock bolt, the wheel fork part comprises a plastics wheel fork, the two-wheeled fork bearing, two spring washers and one are taken turns fork bolt, respectively there is a counterbore centre of the top and bottom at the top of plastics wheel fork, between two counterbores of plastics wheel fork, a through hole is arranged, plastics wheel fork two fork lower ends have mutual to perforation, what plastics wheel fork two forks were inboard respectively encloses with prominent perforation place, respectively inlay and take turns fork bearing in the counterbore of the top and bottom at plastics wheel fork top, place two spring washers in the through hole at plastics wheel fork top, the endoporus that the wheel fork bolt penetrates the two-wheeled fork bearing at plastics wheel fork top from bottom to top neutralizes in two spring washers, by the wheel fork bolt of two wheel fork parts respectively from bottom to top, be screwed into described vehicle body U-shaped pipe and be connected in the tapped bore of two barrels, and tighten, thereby two wheel fork parts are connected in to the below of described body rear end, by the wheel fork bolt of a wheel fork part from bottom to top, be screwed in the tapped bore of described fork rear end barrel, and tighten, thereby a wheel fork part is connected in to the below of described fork rear end, wheel is middle each wheel of PU with a bearing of two sides, wheel by the lock bolt to be screwed to connect in plastics wheel fork two fork lower ends mutual to perforation in, thereby and the wheel fork part coordinates the described cardan wheel of formation, brake comprises brake lever, the sheet of stopping, the line of stopping, spring and eye bolt, the sheet of stopping is the stamping of an arc, middle part horizontal welding one pipe of the stamping of arc, the front end of sheet stopped has a hole, stop the pore of sheet pipe by mutual perforation is rotationally connected in below to lock bolt and the downward right-angle folding of described front fork crook, penetrate eye bolt in the sheet front aperture of stopping, one of line of stopping is connected in brake lever, the stop other end of line penetrates in the hole of perforated metal sheet of described front fork, penetrate again in spring, penetrate again in the hole of the eye bolt on the sheet of stopping, and with nut and eye bolt to twisting, allow the stop front end of sheet be connected with the other end of the line of stopping.

The invention has the beneficial effects as follows: the diverse location of body forward structure is connected to three rotating cylinders, the first rotating cylinder is socketed on L shaped of front fork member, and act on the turning function of handlebar, the second rotating cylinder is socketed on the front end of fork, and as the turning point of fork, the 3rd rotating cylinder is socketed on frame section round steel with threaded hole, turning point as frame section, trample the left and right pedal the related frame section of U-shaped band iron is together swung, the inboard effect fork at the bent font frame of frame section two swings, thereby the present invention is moved ahead.

The accompanying drawing explanation:

Fig. 1 is organigram of the present invention

Fig. 2 is that the figure that moves ahead is stepped on a left side of the present invention

Fig. 3 is that the figure that moves ahead is stepped on the right side of the present invention

Fig. 4 is dismounting vanning design sketch of the present invention

In figure: 1---the front fork member, 2---handlebar, 3---vehicle body, 4---driver train, 5---front-wheel, 6---cardan wheel, 7---brake; Wherein vehicle body 3 also comprises: 31---rotating cylinder, and 32---front pipe, 33---rear pipe, 34---the U-shaped pipe, 35---barrel; Driver train 4 also comprises: 41---frame section, and 42---the U-shaped band iron, 43---the left and right pedal, 44---fork, 35---barrel; Brake 7 also comprises: 71---brake lever, and 72---the sheet of stopping, 73---the line of stopping, 74---spring, 75---eye bolt.

The specific embodiment:

According to Fig. 1, described both feet replace treading type scooter, comprise front fork member 1, handlebar 2, vehicle body 3, driver train 4, front-wheel 5, cardan wheel 6 and brake 7;

Described front fork member 1 is by front fork, L shaped and square pipes with holes formation, described front fork is that the middle part of a band iron has two downward right-angle bendings, and then punching has one mutual to perforation below band iron two downward right-angle folding crooks, in a band iron two ends punching, have one mutual to perforation with rush fillet, thereby make described front fork, the sheetmetal that the front at described front fork top is with holes along welding one, described L shaped is to be bent into L shaped with the round steel of 10 millimeters of φ, a tapped bore is opened at center at a L shaped end end points, a top that is welded in front fork of described L shaped, and by a described L shaped end with threaded hole upwards, the L shaped bending part made progress at a described L shaped end is socketed a metal lining ring, metal lining ring on L shaped of described front fork member 1, it is the blank of a metal circular tube, described square pipes with holes vertically is welded on L shaped, and be positioned at L shaped the top with the front fork weld, described square pipes with holes is that the top of one section square tube is with a circular hole, in the circular hole of square pipes with holes and in the pore of square pipes with holes, snap-on is installed, snap-on in described front fork member 1 square pipes with holes, it is the vertical connection one bulb column of an end of a U-shaped flexure strip, the bottom of described front fork member 1 square pipes with holes trailing flank is with a ∩ shape gap, the round steel external diameter that the ∩ shape gap of described front fork member 1 square pipes with holes and described front fork member 1 are L shaped is complementary.

Described handlebar 2, it is the intermediate vertical welding one vertical pipe of a horizontal pipe, one of described vertical pipe below is pressed into square-tube-shaped, the external diameter of the internal diameter of the square-tube-shaped of described handlebar 2 vertical pipes and the square pipes with holes of described front fork member 1 is complementary, one side of the square-tube-shaped of described vertical pipe is with button hole, the bottom of the rear side of the square-tube-shaped of the vertical pipe of described handlebar is with a ∩ shape gap, the round steel external diameter that ∩ shape gap on the vertical pipe square-tube-shaped of described handlebar 2 and described front fork member 1 are L shaped is complementary, described handlebar 2 is by the button hole of square-tube-shaped one side of described vertical pipe, be buckled on the snap-on in described front fork member 1 square pipes with holes.

Described vehicle body 3 comprises rotating cylinder 31, front pipe 32, rear pipe 33, U-shaped pipe 34 and barrel 35, described rotating cylinder 31 comprises the metal pipeloop, plastic backing member and rotating cylinder bearing, described metal pipeloop is the blank of metal circular tube, described plastic backing member is that a counterbore respectively is with at a two, the middle tubular plastic part with through hole of two counterbores, the circumference of one end of described plastic backing member is also with chimb, described plastic backing member is pressed in described metal pipeloop, again two described rotating drum shaft pressure-bearings are entered in the counterbore at described plastic backing member two, the metal pipeloop of the described rotating cylinder 31 of the vertical welding one of the front end of described front pipe 32, the described rotating cylinder 31 be connected with described front pipe 32 front ends is called the first rotating cylinder 31, the metal pipeloop of the described rotating cylinder 31 of the vertical welding in the rear end of described front pipe 32, the described rotating cylinder 31 be connected with described front pipe 32 rear ends is called the second rotating cylinder 31, also have a described rotating cylinder 31 to be called the 3rd rotating cylinder 31, the metal pipeloop of the metal pipeloop of described the first rotating cylinder 31 and described the second rotating cylinder 31 becomes parallel shape and described front pipe welding, and allow the metal pipeloop of described the first rotating cylinder 31 become upward and downward with the pore of the metal pipeloop of described the second rotating cylinder 31, the metal tube lap welding of the front end of described rear pipe 33 and described the second rotating cylinder 31 connects, welding in the middle of the rear end of described rear pipe 33 and described U-shaped pipe 34, described U-shaped pipe 34 is that a pipe bends to the U font, the metal pipeloop of described the 3rd rotating cylinder 31 is welded in the top of described rear pipe 33, and make the metal pipeloop of described the 3rd rotating cylinder 31 parallel with described rear pipe 33, two described barrels 35 are welded at the two ends of described U-shaped pipe 34, described barrel 35 is that in one section seamless circular pipe orifice, tapping becomes tapped bore, weld two described barrels 35 with the two ends of described U-shaped pipe 34 and present the inclination after front lower, the bearing bore of described vehicle body 3 by described the first rotating cylinder 31 is socketed on of L shaped tapped bore of described front fork member 1, and be fastened to a bolt in the tapped bore of L shaped of described front fork member 1 and locate.

Described driver train 4 comprises frame section 41, U-shaped band iron 42, left and right pedal 43, fork 44 and barrel 35, described frame section 41 is to be bent into the moulding of bent font frame with the round steel of 10 millimeters of Φ, the end points of the centre at the bottom of bent font circle and one section one end of the vertical welding of bent font frame has the round steel of 10 millimeters of Φ with threaded hole again, socket one lining ring on round steel with threaded hole, at the bottom of the frame of the bent font frame of described frame section 41, with described U-shaped band iron 42, weld, described U-shaped band iron 42 is to carry out arc-shaped bend to U-shaped with a band iron along the in-plane of band iron, band iron face upper punch at two of U-shaped has connecting bore again, the connecting bore at two of described U-shaped band iron 42 is connected with described left and right pedal 43 by bolt, described left and right pedal 43, to be formed by plastic injection-moulded, the bottom of described left and right pedal 43 is with the hole of several extension bolts, the hole of several extension bolts of pedal 43 bottoms, described left and right is corresponding with the connecting bore at two of described U-shaped band iron 42, on described frame section 41 after welding with described U-shaped band iron 42, round steel with threaded hole penetrates in the bearing bore of described the 3rd rotating cylinder 31, and be fastened to a bolt in the tapped bore of round steel with threaded hole on described frame section 41 and locate, described fork 44 welds described barrel 35 by the round steel rear end of 10 millimeters of the Φ of a front end right-angle bending and forms, described barrel 35 is that in one section seamless circular pipe orifice, tapping becomes tapped bore, the described barrel 35 of described fork 44 rear ends is presented the inclination after front lower, the end points of described fork 44 front end right-angle bendings is threaded hole, described fork 44 front end right-angle folding crooks are socketed a lining ring, described fork 44 front end right-angle bendings penetrate in the bearing bore of described the second rotating cylinder 31 from bottom to top, and twist in the tapped bore that connects described fork front end and locate with a bolt.

Described front-wheel 5 is PU wheels that middle two sides respectively is inlaid with a bearing, and described front-wheel 5 is by perforation be connected mutual with front fork two lower ends of described front fork member 1 with two lining rings to the lock bolt.

Described cardan wheel 6, comprise the wheel fork part, wheel and to the lock bolt, described wheel fork part comprises a plastics wheel fork, the two-wheeled fork bearing, two spring washers and one are taken turns fork bolt, respectively there is a counterbore centre of the top and bottom at the top of described plastics wheel fork, between two counterbores of described plastics wheel fork, a through hole is arranged, described plastics wheel fork two fork lower ends have mutual to perforation, inboard perforation place is respectively enclosed with prominent of described plastics wheel fork two forks, respectively inlay and take turns fork bearing in the counterbore of the top and bottom at described plastics wheel fork top, place two spring washers in the through hole at described plastics wheel fork top, describedly take turns the endoporus that fork bolt penetrates the two-wheeled fork bearing at described plastics wheel fork top from bottom to top and neutralize in two spring washers, the described of two described wheel fork parts taken turns to fork bolt respectively from bottom to top, be screwed in the tapped bore of two described barrels 35 of 3 liang of rear ends of described vehicle body, and tighten, thereby two described wheel fork parts are connected in to the below of 3 liang of rear ends of described vehicle body, the described of one described wheel fork part taken turns to fork bolt from bottom to top, be screwed in the tapped bore of described barrel 35 of described fork 44 rear ends, and tighten, thereby a described wheel fork part is connected in to the below of described fork 44 rear ends, described wheel is middle each wheel of PU with a bearing of two sides, three described wheels by three pairs to the lock bolt to be screwed to connect in three described plastics wheel forks two fork lower ends mutual to perforation in.

Described brake 7, comprise brake lever 71, the sheet 72 of stopping, the line 73 of stopping, spring 74 and eye bolt 75, described brake lever 71 is installed on described handlebar 2, the described sheet 72 of stopping, it is the stamping of an arc, middle part horizontal welding one pipe of the stamping of arc, the described front end of stopping sheet 72 has a hole, the pore of described sheet 72 pipes of stopping is by mutual being rotationally connected perforation in below to lock bolt and the downward right-angle folding of described front fork crook, penetrate described eye bolt 75 in described sheet 72 front aperture of stopping, one of the described line 73 of stopping is connected in described brake lever 71, described other end of stopping line 73 penetrates in the hole of perforated metal sheet of described front fork, penetrate again in described spring 74, penetrate again in the hole of the eye bolt 75 on the described sheet 72 of stopping, and twist with nut and 75 pairs of described eye bolts, allow the front end of the described sheet 72 of stopping be connected with described other end of stopping line 73.

Claims

1. both feet replace treading type scooter, comprise the front fork member, handlebar, vehicle body, driver train, front-wheel, three cardan wheels and brake, it is characterized in that: the front fork member is by front fork, L shaped and square pipes with holes formation, front fork is that the middle part of a band iron has two downward right-angle bendings, and then punching has one mutual to perforation below band iron two downward right-angle folding crooks, it is one mutual to perforation with rush fillet that two lower ends punchings after a band iron bending have, thereby make described front fork, in the front at described front fork top along welding one sheetmetal with holes, L shaped is to be bent into L shaped with the round steel of 10 millimeters of φ, a tapped bore is opened at center at a L shaped end end points, the top that is welded in front fork by L shaped, and by a L shaped end with threaded hole upwards, the L shaped bending part made progress at a L shaped end is socketed a metal lining ring, with square pipes with holes, vertically be welded on L shaped again, and be positioned at L shaped the top with the front fork weld, square pipes with holes is that the top of one section square tube is with a circular hole, in the circular hole of square pipes with holes and in the pore of square pipes with holes, snap-on is installed, handlebar is the intermediate vertical welding one vertical pipe of a horizontal pipe, vertical pipe is a pipe fitting that is pressed into square-tube-shaped of below, one side of the square-tube-shaped of vertical pipe is with button hole, handlebar, by the button hole of a side of the square-tube-shaped of a vertical pipe, is buckled on the snap-on in front fork member square pipes with holes, vehicle body comprises three rotating cylinders, front pipe, rear pipe, U-shaped pipe and two barrels, rotating cylinder comprises the metal pipeloop, plastic backing member and rotating cylinder bearing, the metal pipeloop is the blank of metal circular tube, plastic backing member is that a counterbore respectively is with at a two, the middle tubular plastic part with through hole of two counterbores, the circumference of one end of plastic backing member is also with chimb, plastic backing member is pressed into to the metal pipeloop, again two rotating drum shaft pressure-bearings are entered in the counterbore at plastic backing member two and become at once described rotating cylinder, the metal pipeloop of the vertical welding one described rotating cylinder of the front end of front pipe, the rotating cylinder be connected with front pipe front end is called the first rotating cylinder, the metal pipeloop of the vertical welding one described rotating cylinder in the rear end of front pipe, the rotating cylinder be connected with front pipe rear end is called the second rotating cylinder, a remaining rotating cylinder is called the 3rd rotating cylinder, the metal pipeloop of described the first rotating cylinder becomes parallel shape and the welding of front pipe with the metal pipeloop of described the second rotating cylinder, and allow the pore of metal pipeloop of the metal pipeloop of described the first rotating cylinder and described the second rotating cylinder become upward and downward, the metal tube lap welding of the front end of rear pipe and described the second rotating cylinder connects, welding in the middle of the rear end of rear pipe and U-shaped pipe, the metal pipeloop of described the 3rd rotating cylinder is welded in the top of rear pipe, and make the metal pipeloop of described the 3rd rotating cylinder parallel with rear pipe, two barrels are welded at the two ends of U-shaped pipe, barrel is that in one section seamless circular pipe orifice, tapping becomes tapped bore, weld two barrels with the two ends of U-shaped pipe and present the inclination after front lower, metal pipeloop at three described rotating cylinders is pressed into three plastic backing members again, respectively be pressed into two rotating cylinder bearings at three plastic backing members again, the bearing bore of described vehicle body by the first rotating cylinder is socketed on of tapped bore of L shaped of described front fork member, and be fastened to a bolt in the tapped bore of L shaped and locate, driver train comprises frame section, the U-shaped band iron, left and right pedal and fork, frame section is to be bent into the moulding of bent font frame with the round steel of 10 millimeters of Φ, the end points of the centre at the bottom of bent font circle and one section one end of the vertical welding of bent font frame has the round steel of 10 millimeters of Φ with threaded hole again, socket one lining ring on round steel with threaded hole, at the bottom of the frame of the bent font frame of frame section, with the U-shaped band iron, weld, the U-shaped band iron is to carry out arc-shaped bend to U-shaped with a band iron along the in-plane of band iron, band iron face upper punch at two of U-shaped has connecting bore again, the connecting bore at two of U-shaped band iron is connected with the left and right pedal by bolt, on frame section after welding with the U-shaped band iron, round steel with threaded hole penetrates in the bearing bore of described the 3rd rotating cylinder, and be fastened to a bolt in the tapped bore of round steel with threaded hole on frame section and locate, fork welds a barrel by the round steel rear end of 10 millimeters of the Φ of a front end right-angle bending and forms, barrel is that in one section seamless circular pipe orifice, tapping becomes tapped bore, the barrel of fork rear end is presented the inclination after front lower, the end points of fork front end right-angle bending is threaded hole, fork front end right-angle folding crook is socketed a lining ring, fork front end right-angle bending penetrates in the bearing bore of described the second rotating cylinder from bottom to top, and twist to connect in fork front end tapped bore with a bolt and locate, front-wheel is the PU wheel that middle two sides respectively is inlaid with a bearing, front-wheel is by perforation be connected mutual with front fork two lower ends to the lock bolt, cardan wheel comprises: the wheel fork part, wheel and to the lock bolt, the wheel fork part comprises a plastics wheel fork, the two-wheeled fork bearing, two spring washers and one are taken turns fork bolt, respectively there is a counterbore centre of the top and bottom at the top of plastics wheel fork, between two counterbores of plastics wheel fork, a through hole is arranged, plastics wheel fork two fork lower ends have mutual to perforation, what plastics wheel fork two forks were inboard respectively encloses with prominent perforation place, respectively inlay and take turns fork bearing in the counterbore of the top and bottom at plastics wheel fork top, place two spring washers in the through hole at plastics wheel fork top, the endoporus that the wheel fork bolt penetrates the two-wheeled fork bearing at plastics wheel fork top from bottom to top neutralizes in two spring washers, by the wheel fork bolt of two wheel fork parts respectively from bottom to top, be screwed into described vehicle body U-shaped pipe and be connected in the tapped bore of two barrels, and tighten, thereby two wheel fork parts are connected in to the below of described body rear end, by the wheel fork bolt of a wheel fork part from bottom to top, be screwed in the tapped bore of described fork rear end barrel, and tighten, thereby a wheel fork part is connected in to the below of described fork rear end, wheel is middle each wheel of PU with a bearing of two sides, wheel by the lock bolt to be screwed to connect in plastics wheel fork two fork lower ends mutual to perforation in, thereby and the wheel fork part coordinates the described cardan wheel of formation, brake comprises brake lever, the sheet of stopping, the line of stopping, spring and eye bolt, the sheet of stopping is the stamping of an arc, middle part horizontal welding one pipe of the stamping of arc, the front end of sheet stopped has a hole, stop the pore of sheet pipe by mutual perforation is rotationally connected in below to lock bolt and the downward right-angle folding of described front fork crook, penetrate eye bolt in the sheet front aperture of stopping, one of line of stopping is connected in brake lever, the stop other end of line penetrates in the hole of perforated metal sheet of described front fork, penetrate again in spring, penetrate again in the hole of the eye bolt on the sheet of stopping, and with nut and eye bolt to twisting, allow the stop front end of sheet be connected with the other end of the line of stopping.

2. both feet according to claim 1 replace treading type scooter, it is characterized in that: the metal lining ring on L shaped of described front fork member is the blank of a metal circular tube.

3. both feet according to claim 1 replace treading type scooter, it is characterized in that: the snap-on in described front fork member square pipes with holes is the vertical connection one bulb column of an end of a U-shaped flexure strip.

4. both feet according to claim 1 replace treading type scooter, it is characterized in that: the bottom of the square pipes with holes trailing flank of described front fork member is with a ∩ shape gap, and the round steel external diameter that the ∩ shape gap of described front fork member square pipes with holes and described front fork member are L shaped is complementary.

5. both feet according to claim 1 replace treading type scooter, it is characterized in that: the external diameter of the internal diameter of the square-tube-shaped of the vertical pipe of described handlebar and the square pipes with holes of described front fork member is complementary.

6. both feet according to claim 1 replace treading type scooter, it is characterized in that: the bottom of the rear side of the square-tube-shaped of the vertical pipe of described handlebar is with a ∩ shape gap, and the round steel external diameter that the ∩ shape gap on the vertical pipe square-tube-shaped of described handlebar and described front fork member are L shaped is complementary.

7. both feet according to claim 1 replace treading type scooter, it is characterized in that: described U-shaped pipe is that a pipe bends to the U font.

8. both feet according to claim 1 replace treading type scooter, it is characterized in that: described left and right pedal, to be formed by plastic injection-moulded, the bottom of described left and right pedal is with the hole of several extension bolts, and the hole of several extension bolts of described left and right pedal bottom is corresponding with the connecting bore at two of described U-shaped band iron.