CN206446711U

CN206446711U - Quick-folding is Shockproof type three-wheel scooter

Info

Publication number: CN206446711U
Application number: CN201720117673.4U
Authority: CN
Inventors: 庞明方
Original assignee: Taicang Chezhongbao Leisure Products Co Ltd
Current assignee: Taicang Chezhongbao Leisure Products Co Ltd
Priority date: 2017-02-08
Filing date: 2017-02-08
Publication date: 2017-08-29
Anticipated expiration: 2027-02-08

Abstract

A kind of quick-folding is Shockproof type three-wheel scooter, including quick-folding handlebar, front fork stem, side arm, folding connecting rod, vehicle body, front-wheel, hind axle, left rear wheel, off hind wheel and drive mechanism, side arm is by preceding even part, rotary part, after connect part and groove profile connects part and is formed by connecting, groove profile connects part and locating shaft connection, the front-end and back-end of folding connecting rod are connected with rear even part and vehicle body main part respectively, front bar and rear bar the energy mutually interlocking of folding connecting rod, vehicle body is by vehicle body main part, fore bearing, trim ring, bearing after two, bearing block, locating shaft, shock resistance block, revolver is pitched, right wheel is pitched, shock-absorbing catch and rear board are formed by connecting, front-wheel is installed on front axle, hind axle is installed on a left side, the rear end of right wheel fork, left rear wheel and off hind wheel are connected to the two ends of hind axle, drive mechanism includes treadle part, step, crankshaft toothed wheel group, backgear group, flywheel and chain.

Description

Quick-folding is Shockproof type three-wheel scooter

Technical field

The utility model is related to a kind of three-wheeled collapsible scooter, and more particularly to a kind of quick-folding steps on Shockproof type three-wheel Car slipping.

Background technology

There is folding scooter in the market, due to the reason such as structure and construction, very little can't be reached after folding, even It is small to the degree that can be put into knapsack.

The content of the invention

The purpose of this utility model is to provide for a kind of handlebar in the new type foldable mode of quick-folding handlebar type, has folded Can be put into afterwards in knapsack --- quick-folding is Shockproof type three-wheel scooter.The purpose of this utility model is realized in 's；Quick-folding Shockproof type three-wheel scooter, including quick-folding handlebar, front fork, side arm, folding connecting rod, vehicle body, front-wheel, Hind axle, left rear wheel, off hind wheel and drive mechanism, it is characterized in that：Quick-folding handlebar includes left hand handle, right handgrip, upper interlocking Part, left lock-connecting piece, right lock-connecting piece, substrate and two hands are folded keeper, left hand is being upper end work by pipe with right handgrip Right-angle bending is formed, and the lower end of left hand handle and the lower end of right handgrip are respectively provided with a pair of perforation, and the upper end connection of left hand handle is locked The left part part of fitting, the right members of the upper lock-connecting piece of upper end connection of right handgrip, the bottom of left hand handle connects left lock-connecting piece, right The bottom of hand handle connects right lock-connecting piece, and left hand is the left side groove that folding substrate is connected to perforation of lower end, right handgrip lower end The right groove for folding substrate is connected to perforation, folding the anterior left side of substrate has a vertical left side groove, folds before substrate There is vertical the right groove on the right of portion, folding the right back of substrate left side groove has a vertical left round tube hole, folds substrate left There is a vertical left rectangular opening right back of round tube hole, folds close-fitting in the left rectangular opening of substrate and fills in left flat pin, left flat pin Front left side twist-on left semicircle hook bolt, folding groove left back on the right of substrate has a vertical right round tube hole, folds the right circle of substrate There is a vertical right rectangular opening left back of through hole, folds close-fitting in the right rectangular opening of substrate and fills in right flat pin, right flat pin Forward right side twist-on right semi-circle hook bolt, folds the left round tube hole of substrate and folds the right round tube hole connection front fork of substrate, left lock-connecting piece energy Left semicircle hook bolt interlocking with folding substrate, the right semi-circle hook bolt interlocking that right lock-connecting piece can be with folding substrate, upper lock-connecting piece Left part part can be with upper lock-connecting piece right members interlocking, two hands keeper be connected to front fork revolver fork arm bottom and After the bottom of right wheel fork arm, left hand and right handgrip are folded, left hand is being caught in C-shaped of the hand positioned at revolver fork arm keeper In bayonet socket, right handgrip is caught in C-shaped bayonet socket of the hand positioned at right wheel fork arm keeper；Side arm by it is preceding even part, rotary part, after Even part and groove profile connect part composition, and the preceding amplexis hole of preceding even part is fixedly connected in the middle part of front fork, and preceding even part is that the cut-out of aluminium extruded type adds Workpiece, preceding even the front and rear of part respectively has amplexis hole, rotary part to connect before being installed on the rear amplexis hole of part, after to connect part be aluminium extruded type Slice processing part, after connect part front end be in groove profile, after connect part groove profile both sides up and down have it is mutual to perforation, after connect part it is rear on Fang Youyi transverse holes, after connect part back lower place end in rod, after connect part and connect a groove profile in the rear end of rod and connect part, groove profile connects after part There is a mutual cross-perforating left and right sides at end, after connect part groove profile it is mutual to being punched through to lock bolt connection rotating part Part；Folding connecting rod includes front bar, rear bar, sliding lock, little spring and button-headed bolt, and front bar is the groove profile part that Open Side Down, front bar Front-end and back-end both sides respectively with one laterally it is mutual to perforation, there is the screw thread of a upward and downward at the rear portion of front bar Cao's top surface Twist-on button-headed bolt in hole, the screwed hole of front bar upward and downward, rear bar is the groove profile part that Open Side Down, the front portion and rear end of rear bar Both sides respectively with one laterally it is mutual to perforation, the front end of rear bar groove top surface, which has in an elongated hole, the elongated hole of rear bar, installs sliding lock And little spring, the mutual transverse holes rotation company to being punched through connecting lock bolt with after part back upper place of transverse direction of front bar front end Connect, to perforation rotate mutual to lock bolt and rear bar front cross that be punched through that the transverse direction of preceding rod rear end is mutual is connected, and is twisted It is connected to the sliding lock interlocking that the button-headed bolt of front bar can be installed in rear bar；Vehicle body is by vehicle body main part, fore bearing, trim ring, two Bearing, bearing block, locating shaft, shock resistance block, revolver fork, right wheel fork, shock-absorbing catch and constituted afterwards with rear board, in the middle part of vehicle body main part Left side have first before counterbore, vehicle body main part first before counterbore connect to the right in through hole, the middle through hole of vehicle body main part connects to the right Counterbore is to the right after counterbore, vehicle body main part first behind the back lower place of counterbore coherent first before counterbore before connecing second, vehicle body main part first Through hole after counterbore is connected to the right after counterbore after connection second, vehicle body main part second, there are a transverse holes, vehicle body in the front end of vehicle body main part There are a transverse holes above main part, the transverse holes of vehicle body main part front end are positioning shaft hole, and there is a horizontal perforation at the rear portion of vehicle body main part, Vehicle body main part rear end lower section connection shock resistance block, vehicle body main part second before counterbore inlay fore bearing, vehicle body master is placed on trim ring The right side of counterbore is fixed before part second, fore bearing is fixed on before the second of vehicle body main part in counterbore, vehicle body main part second after Bearing after inlaying one in bearing after counterbore inlays one, bearing block, bearing base rear end has corresponding with vehicle body main part rear portion horizontal perforation Hole, the cross-perforating at vehicle body main part rear portion pass through lock bolt connection revolver is pitched, bearing block and right wheel are pitched, revolver fork and right wheel Fork is all the wheel fork of rear end embedded bearing, is connected with shock-absorbing catch between revolver fork and right wheel fork, locating shaft penetrates groove profile and connected after part In the mutual cross-perforating in end, and in the positioning shaft hole of close-fitting press-in vehicle body main part, rear rod rear end is laterally mutual logical to perforation Cross to rotate lock bolt with the transverse holes above vehicle body main part and be connected, the both ends of hind axle are penetrated pitches what is pitched with right wheel in revolver In the brearing bore of rear end, left rear wheel and off hind wheel are connected to the left and right ends of hind axle, and rear board is bolted In the top that revolver is pitched and right wheel is pitched, front-wheel is installed on front fork；Drive mechanism includes treadle part, step, crankshaft toothed wheel group, rear tooth Wheel group, flywheel and chain, crankshaft toothed wheel group are made up of bent axle, prime gear and two crankshaft bearings, and bent axle is two right-angle folding Curved round steel and a disk is welded, and prime gear is a nylon gear, and the right flank of prime gear has one to correspond to front axle The groove having on the boss of endoporus, the boss of prime gear corresponding to bent axle round steel is held, the boss of prime gear is penetrated from left to right In the endoporus of fore bearing, the left head of bent axle is penetrated in the axis hole of prime gear to the left, is coordinated with bolt and nut by prime tooth Wheel is fixed with bent axle, then two crankshaft bearings are socketed on into two of bent axle, and rear class gear train is by rear class gear, rear axle and sprocket wheel structure The left part of rear axle is fixedly connected on into, rear class gear, and the right part of rear axle is penetrated in being embedded in counterbore after vehicle body main part second Rear brearing bore in, the left end of rear axle is penetrated in the rear brearing bore in bearing block, and sprocket wheel is fixedly connected on the right side of rear axle Head, flywheel is installed on the position to the right in the middle part of hind axle, and chain is wire-wrapped in sprocket wheel and flywheel, and treadle part is cutting by Al squeezing material There is the pore corresponding with locating shaft piece workpiece, the front end of treadle part, and there is slotted hole the anterior lower section of treadle part, treadle part There is the screwed hole with step twist-on rear end, and the pore of two treadle part front ends rotates the two for being socketed on locating shaft, two treadle parts Slotted hole is slidably socketed on two crankshaft bearings of crankshaft toothed wheel group, and two steps are fastened to two screwed holes of two treadle part rear ends In；After dial sliding lock, vehicle body is folded up, vehicle body is drawn in front fork stem, in addition the folding of quick-folding handlebar, reached quick complete Beautiful folding effect.

The beneficial effects of the utility model are：The ingenious cooperation that the utility model passes through profile piece and stamping parts so that whole Individual vehicle frame there is no electric welding, represent a kind of new trend of the manufacturing process of three-wheel scooter；It is of the present utility model Handlebar uses the form of quick-folding handlebar so that the folding of handlebar reaches both most simply, and reach most effective；Front fork stem connects In the upward and downward circular hole for being connected to the left back end of lower clamping piece, the upward and downward circular hole of preceding even part one end is fixedly connected on front fork, preceding even part The upward and downward circular hole connection rotary part of the other end, after connect the front end of part again by being connected to lock bolt with rotary part, after connect The groove profile of part rear end connects the both ends that part is rotationally connected with locating shaft, adds and connects the front bar of part back upper place after being connected to and be connected to Rear bar above vehicle body main part, the four-bar linkage structure constituted allows vehicle body to fold effectively and quick；Under vehicle body main part rear end Side's connection shock resistance block, is connected with shock-absorbing catch between being pitched revolver fork and right wheel and is engaged, can reach effective shock-proof effect.

Brief description of the drawings：

Fig. 1 is the utility model structural representation；

Fig. 2 is the expanded schematic diagram of the utility model quick-folding handlebar；

Fig. 3 is the gathering schematic diagram of the utility model quick-folding handlebar；

Fig. 4 is to connect part and groove profile connects the organigram of part after the utility model；

Fig. 5 is the organigram of the utility model vehicle body main part；

Fig. 6 is the structural representation of the utility model treadle part；

Fig. 7 is the utility model folding process schematic diagram；

Fig. 8 is that the utility model folding finishes figure；

In figure：1 --- quick-folding handlebar, 2 --- front fork, 3 --- side arm, 4 --- folding connecting rod, 5 --- vehicle body, 6 --- front-wheel, 71 --- hind axle, 72 --- left rear wheel, 73 --- off hind wheel, 8 --- drive mechanism；Wherein quick-folding car Also include 1：The upper lock-connecting piece of 11 --- left hand handle, 12 --- right handgrips, 13 ---, 14 --- left lock-connecting piece, 15 --- right locks Fitting, 16 --- fold substrate, 17 --- hand is keeper.

Embodiment：

According to Fig. 1, described quick-folding is Shockproof type three-wheel scooter, including quick-folding handlebar 1, front fork 2, side arm 3rd, folding connecting rod 4, vehicle body 5, front-wheel 6, hind axle 71, left rear wheel 72, off hind wheel 73 and drive mechanism 8；

Described quick-folding handlebar 1 includes left hand 11, right handgrip 12, upper lock-connecting piece 13, left lock-connecting piece 14, right interlocking Part 15, substrate 16 and hand are folded keeper 17, described left hand is all by the upper end of pipe 11 and described right handgrip 12 Portion is formed as right-angle bending, and the left hand in 11 lower end and the lower end pore of the right handgrip 12 being respectively plugged with a thick-walled metal Pipe, the left hand is inconjunction with 11 lower end the thick-walled metal pipe being located therein and is provided with a pair of perforation, and the left hand is 11 Lower end to the hole heart extended line of perforation and the left hand 11 right-angle bending in the 45 ° of angles overlooked, the left hand is 11 Lower end is to being provided with a screwed hole above perforation, the left hand is 11 screwed hole hole heart extended lines and the left hand 11 lower ends pair The hole heart extended line of perforation is vertical in what is overlooked, and the lower end of the right handgrip 12 is inconjunction with the thick-walled metal pipe being located therein and opened There are a pair of perforation, the lower end of the right handgrip 12 is in overlook with the right-angle bending of the right handgrip 12 to the hole heart extended line of perforation 45 ° of angles, the lower end of right handgrip 12 is to being provided with a screwed hole above perforation, the screwed hole hole heart extension of right handgrip 12 Line is vertical in what is overlooked to the hole heart extended line of perforation with the lower end of right handgrip 12.

Described upper lock-connecting piece 13 includes left part part and right members, and described left part part is made up of modification of nylon, the left side The left end of part has a vertical hole of cracking, and it is vertical mutual to perforation, the left part by one that the left part part cracks that hole cracks The right part of part is in the cylinder of stretching, extension to the right, and the right-hand member of the left part part cylinder has convex shoulder to the right, the left part part There is external screw thread on convex shoulder, the borehole jack that cracks of the left part part is connected to lower section of the left hand 11 upper end right-angle bendings, is used in combination It is vertical mutual in perforation, being coordinated with nut and being tightened, by cracking for the left part part that bolt penetrates that the left part part cracks Hole hug in the left hand 11 upper end.

Described right members are by connecting seat and screw set and constitute, and connecting seat is made up of modification of nylon, and the right-hand member of connecting seat has Vertical hole of cracking, it is vertical mutual to perforation by one that connecting seat cracks that hole cracks, and connecting seat left part is in stretching, extension to the left Circular bar shape, the left end of connecting seat circular bar shape has axial screwed hole, and the borehole jack that cracks of connecting seat is connected on the right handgrip 12 The lower section of end right-angle bending, it is vertical mutual in perforation, being coordinated with nut and being tightened that blending bolt penetrates that connecting seat cracks, The hole of cracking of connecting seat is hugged in the upper end of the right handgrip 12, set is screwed and is made up of modification of nylon, screw the left end of set There is a counterbore, screw and internal thread is carried in the counterbore of set, screwing the axial direction of the right part of set has a round tube hole, screw set axial direction Round tube hole and the female counterbore insertion of band for screwing set, the round tube hole for screwing set axial direction are socketed on the stretching, extension of connecting seat to the left Circular bar shape on, and by the cooperation of bolt and pad, set will be screwed be rotatably connected and carry interior spiral shell on connecting seat, screw set The counterbore of line can be pinned with the external screw thread twist-on on the left part part convex shoulder.

Described left lock-connecting piece 14, including left interlocking seat, left interlocking hook, left bolt and left interlocking spring, it is described Left interlocking seat is made up of Al squeezing material section, and the left front end of the left interlocking seat is vertical circular hole, the right side of the left interlocking seat Rear end is vertical groove profile, and the both sides of the vertical groove profile of left interlocking seat have one mutual to perforation, and the left interlocking seat passes through Vertical circular hole close-fitting be socketed on left hand 11 bottom and positioned at the left hand the lower section of 11 screwed holes, the described right side Lock-connecting piece 15, including right interlocking seat, right interlocking hook, right bolt and right interlocking spring, described right interlocking seat is by aluminium extruded type Material section is made, and the right front ends of the right interlocking seat are vertical circular hole, and the left back end of the right interlocking seat is vertical groove profile, The both sides of the vertical groove profile of right interlocking seat have one mutual to perforation, and the right interlocking seat passes through vertical circular hole close-fitting and is socketed In the bottom of right handgrip 12 and positioned at the lower section of the screwed hole of right handgrip 12.

Described left interlocking hook is made up of Al squeezing material section, and the top of the left interlocking hook is latch hook handle, the left lock The latch hook handle for connecing hook is in vertical bar shaped sheet, and a slotted hole, the left interlocking hook are provided with the middle part of the left interlocking hook lock neck of hook The left front end of lower section is that the right rear end below cast portion, the left interlocking hook is in downward hook-type, the cast of the left interlocking hook Portion to lock bolt with mutual being rotated to perforation of the left vertical groove profile of interlocking seat by being connected, and left bolt penetrates the left side In the slotted hole of the interlocking hook lock neck of hook and in left interlocking spring, then it is screwed into screwed hole of the left hand 11 bottoms, and And the bolt head of left bolt as outside the left interlocking hook lock neck of hook bullet it is spacing, described right interlocking hook is by Al squeezing material Section is made, and the top of the right interlocking hook is latch hook handle, and the latch hook handle of the left interlocking hook is in vertical bar shaped sheet, described It is cast portion, the right interlocking hook that the right front ends below a slotted hole, the right interlocking hook are provided with the middle part of the right interlocking hook lock neck of hook The left back end of lower section is in downward hook-type, and the cast portion of the right interlocking hook passes through to lock bolt and the right interlocking seat vertical slot Type it is mutual rotate connection to perforation, right bolt is penetrated in the slotted hole of the right interlocking hook lock neck of hook and right interlocking spring In, then be screwed into the screwed hole of the bottom of right handgrip 12, and the bolt head of right bolt is used as the right interlocking Bullet is spacing outside the hook lock neck of hook.

Described folding substrate 16 is made up of Al squeezing material, and described folding substrate 16 also includes left flat pin, right flat There is a vertical left side groove on square cotter, left semicircle hook bolt and right semi-circle hook bolt, the anterior left side of the folding substrate 16, described Folding the anterior right-hand member of substrate 16 has vertical the right groove, and the left side groove of folding substrate 16 is in opening to the U-shaped of left front Groove, the both sides of the left side groove lower end of folding substrate 16 are provided with mutual to perforation, and folding substrate 16 the right groove is in opening To the U-type groove of right front, the both sides of the right groove lower end of folding substrate 16 are provided with mutual to perforating, the folding substrate 16 There is a vertical left round tube hole right back of left side groove, and there is a vertical left square right back of the left round tube hole of the folding substrate 16 Close-fitting fills in left flat pin, the front left side twist-on left semicircle head spiral shell of left flat pin in shape hole, the left rectangular opening of the folding substrate 16 There is a vertical right round tube hole bolt, the right groove left back of folding substrate 16, the right round tube hole of the folding substrate 16 it is left back Close-fitting fills in a right flat pin, the right side of right flat pin in right rectangular opening vertical Fang Youyi, the right rectangular opening of the folding substrate 16 The right semi-circle hook bolt of front side twist-on one, the left round tube hole of the folding substrate 16 is neutralized in the right round tube hole for folding substrate 16 Close-fitting is socketed on two upper ends of the front fork 2, the left semicircle hook bolt that described left lock-connecting piece 14 can be with the folding substrate 16 Interlocking, the right semi-circle hook bolt interlocking that described right lock-connecting piece 15 can be with the folding substrate 16, the upper right part of lock-connecting piece 13 Part screw set can be with the upper left part part of lock-connecting piece 13 convex shoulder twist-on.

Described hand has modification of nylon to be made keeper 17, and the hand has one vertical to open the rear end of keeper 17 Slot apertures, the hand vertical has one mutual to perforation, front end of the hand keeper 17 what keeper 17 cracked that hole cracks There is the C-shaped bayonet socket of the opening of a vertical view forward, keeper 17 is connected to the left front fork arm by the hand described in one by the borehole jack that cracks Bottom, penetrated with bolt the hand keeper 17 is cracked it is vertical mutual to being fixed in perforation, with top nut twist-on, separately Hand described in one is connected to keeper 17 by the borehole jack that cracks the bottom of the right front fork stem, and the hand is penetrated with bolt fixed Position part 17 crack it is vertical mutual to being fixed in perforation, with top nut twist-on, when described left hand is 11 and described right handgrip After 12 fold, described left hand is caught in C-shaped bayonet socket of the hand positioned at revolver fork arm keeper 11, described right handgrip 12 The hand positioned at right wheel fork arm is caught in the C-shaped bayonet socket of keeper.

Described front fork 2 is made up of left front fork arm and right front fork stem, and described left front fork arm and described right front fork stem are all It is made up of metal circular tube, the lower end of the lower end of the left front fork arm and the right front fork stem is all in flattening shape, the left front fork arm Lower end flattening at and the lower end flattening of the right front fork stem at be all provided with the gap of ∩ shapes, the upper end of the left front fork arm and institute State the left round tube hole close-fitting socket for folding substrate 16 and reinforced with pin, the upper end of the right front fork stem and the folding substrate 16 right round tube hole close-fitting is socketed and reinforced with pin.

Described side arm 3 connect before including part, rotary part, after connect part and groove profile connects part, it is described before to connect part be aluminium extruded type Blank, it is described before connect part in overlook V-shaped, it is described before connect the circle that two front ends and a rear end of part respectively have a band to crack Hole, it is described before connect part two front ends two bands crack circular hole crack it is vertical be respectively provided with one laterally to perforation, it is described before connect before part The band at end crack circular hole be inconjunction with crack it is vertical laterally perforation is referred to as before amplexis hole, it is described before connect the band of part rear end and crack Circular hole crack it is vertical be provided with one laterally to perforation, it is described before connect the band circular hole that cracks of part rear end and be inconjunction with vertical transverse direction of cracking To perforation be referred to as after amplexis hole, it is described before connect part two before amplexis hole be fixedly connected on by the twist-on of bolt and nut in front fork Portion, it is described before connect the rear amplexis hole of part the front axle tube of rotary part, described rotation be fixedly connected with by the twist-on of bolt and nut Part includes front axle tube and two bearings, and the upper and lower side of front axle tube pore, which is respectively milled with, places the counterbore that spin axis is held, two bearings difference In the counterbore for being embedded in front axle tube upper and lower side, and by the endoporus of two bearings, corresponding to connecting both sides above and below the groove profile of part front end after described Face it is mutual to perforation, described rear even part is the slice processing part of aluminium extruded type, it is described after to connect the front end of part be in groove profile, it is described after Even the both sides up and down of part groove profile be provided with it is mutual to perforation, it is described before connect the both sides up and down of part groove profile and strike out fillet, it is described after Even there are a transverse holes back upper place of part, it is described after connect part back lower place end in rod, it is described after connect part and pass through spiral shell in the rear end of rod Tether the groove profile described in connecing and connect part, described groove profile, which connects part, to be stamped to form by the sheet metal of piece bar shaped, and the groove profile connects after part There is a mutual cross-perforating left and right sides at end, it is described after connect part groove profile it is mutual to being punched through to lock bolt connection rotation Part.

Described folding connecting rod 4 includes front bar, rear bar, sliding lock, little spring and button-headed bolt, and described front bar is opening Downward groove profile part, the both sides of the front-end and back-end of the front bar are respectively laterally mutual to perforation, the front bar groove top with one There are a slot-type openings front end in face, and there is the screwed hole of a upward and downward at the rear portion of front bar Cao top surface, the front bar upward and downward Twist-on button-headed bolt in screwed hole, the rear bar be transverse width in the groove profile part that Open Side Down, the rear bar groove profile with The horizontal external diameter of the front bar is corresponding, and the front portion of the rear bar and the both sides of rear end are respectively laterally mutual to perforation with one, There are a slot-type openings rear end of the rear bar groove top surface, and there are an elongated hole, the elongated hole of the rear bar in the front end of the rear bar groove top surface Middle installation sliding lock and little spring, described sliding lock are made up of slider, locking plate and connecting bolt, and slider is that the rear portion of sheet bottom surface has The working of plastics that one square-tube-shaped is protruded, the square-tube-shaped that slider is protruded is lowered into the front end in rear bar elongated hole, then by little spring under In the elongated hole for being put into the rear bar upwards, and two of little spring is set to hang down after the square-tube-shaped and the rear bar elongated hole of slider protrusion End, then locking plate is closed on the square-tube-shaped protruded in push button, penetrated with connecting bolt in the hole of locking plate and be fastened to slider protrusion side In tubular pore, little spring is set to be positioned in the elongated hole at the rear portion of locking plate, the rear portion of push button and rear bar, the front bar front end Laterally it is mutual to be punched through to lock bolt with it is described after connect part back upper place transverse holes rotation be connected, the preceding rod rear end Laterally it is mutual be punched through it is mutual to lock bolt and the rear bar front cross perforation rotation is connected, be fastened to it is described before The button-headed bolt of bar can be installed in the sliding lock interlocking in the rear bar.

Described vehicle body 5 includes bearing, bearing block, locating shaft, shock resistance block, a left side after vehicle body main part, fore bearing, trim ring, two Wheel fork, right wheel fork, shock-absorbing catch and rear board, described vehicle body main part is aluminium diecasting, the left side in the middle part of the vehicle body main part Counterbore before having first, the vehicle body main part first before counterbore connect to the right in through hole, the middle through hole of the vehicle body main part is to the right Counterbore before connection second, around counterbore before the vehicle body main part second, is provided with several horizontal screwed holes, the vehicle body Counterbore sinks after connecting second to the right after counterbore, the vehicle body main part first behind the back lower place of counterbore coherent first before main part first There are a transverse holes, the vehicle body master in through hole after counterbore is connected to the right after hole, the vehicle body main part second, the vehicle body main part front end Part front end cross-perforating is to be provided with a vertical screwed hole, the car below positioning shaft hole, the vehicle body main part positioning shaft hole There are a transverse holes above body main part, there is horizontal perforation at the rear portion of the vehicle body main part, and the rear portion horizontal perforation back upper place of vehicle body main part is in Flat, the front and rear of vehicle body main part flat is respectively provided with a screwed hole, the vehicle body main part second before counterbore inlay described Fore bearing, described fore bearing is the deep groove ball bearing of 6813 models, is placed on described trim ring before the vehicle body main part second The right side of counterbore, is penetrated in the several perforation of the trim ring with several bolts and is fastened to counterbore week before the vehicle body main part second Enclose fixed in several horizontal screwed holes, described trim ring is that several perforation are provided with the metal ring of a shim-like, the car Two screwed holes that counterbore is inlayed in the rear bearing described in one, the vehicle body main part flat after the second of body main part pass through two bolts The described shock resistance block of connection, described shock resistance block is by polyurethane into described bearing block is a metal stamping, the bearing block Front end have the counterbore of an embedded bearing, there are hole, hole and the vehicle body of the bearing block rearward end in the rear end of the bearing block Main part rear portion horizontal perforation is corresponding, and the rear bearing described in one is inlayed in the counterbore of the bearing block.

Described revolver fork and described right wheel fork are the metal parts of flat strip shaped, what the revolver fork and the right wheel were pitched The edge of the oriented inner side right-angle bending in top, revolver fork and right wheel fork top are opened on the edge of inner side right-angle bending There are a hole, the revolver fork and the right wheel in the connecting hole being connected with rear board, the front end that the revolver fork and the right wheel are pitched Fork it is anterior it is front and rear respectively have a hole, there are wavy bending, the revolver fork and institute in the middle part that the revolver fork and the right wheel are pitched The wavy bending of right wheel fork or so correspondence is stated, the several and battery case that is provided with for the postmedian that the revolver fork and the right wheel are pitched connects The connecting hole connect, the rear end punching that the revolver fork and the right wheel are pitched has the counterbore of embedded bearing, the revolver fork and the right side A bearing is respectively inlayed in the counterbore of wheel fork rear end, described shock-absorbing catch is stamped to form by sheet metal, a left side for the shock-absorbing catch There is upward flanging on right both sides, and the front and rear of the flanging of shock-absorbing catch two respectively has a hole, the holes of the flanging of shock-absorbing catch two Pitched by rivet and the revolver and the anterior front and rear gaps of right wheel fork are riveted, the revolver fork front aperture and the bearing block Rear hole is corresponding, and corresponding to the left surface of the vehicle body main part rear portion horizontal perforation, the right wheel fork front aperture corresponds to institute The right flank of vehicle body main part rear portion horizontal perforation is stated, by described revolver being pitched to lock bolt, described bearing block and described Right wheel pitches the rear portion for being connected to the vehicle body main part.

Described rear board is formed by plastic injection, and the left-right and front-back of the rear board has a downward stile, it is described behind There are several upward twist-on holes on the inside of the downward stile of plate or so, the position to the right of the downward stile in the rear board front has one The gap that Open Side Down, the bottom surface of the rear board has before the reinforcement of the clathrate of vertical and horizontal, described rear board or so The reinforcement of rear stile and rear board bottom surface vertical and horizontal is integrally coherent, the rear board upward on be also distributed There are antiskid particles, antiskid particles are upper prominent pinnacle round dots, several upward twist-ons on the inside of the downward stile in the left and right below Hole, is pitched with the revolver and connecting hole of the right wheel fork top to inner side right-angle bending edge is corresponding, and by passing through number Tap bolt pitches the revolver and right wheel fork is connected with described rear board.

Described locating shaft is a metal circular shaft, and the locating shaft two ends respectively have the screwed hole of an axial direction, the locating shaft There is the counterbore of a radial direction middle side, and described locating shaft penetrates the groove profile and connected in the mutual cross-perforating in part side, after And close-fitting is pressed into the positioning shaft hole of the vehicle body main part, then from the groove profile connect the mutual cross-perforating of part opposite side in wear Go out, and cause the radial direction counterbore of the locating shaft to correspond to screwed hole vertical below the vehicle body main part positioning shaft hole, with one Twist-on is fixed into the radial direction counterbore of the locating shaft in bolt screwed hole vertical below the vehicle body main part positioning shaft hole, And make the groove profile connect the mutual cross-perforating of part and the locating shaft two ends portion and rotate to be connected, the rear rod rear end is laterally mutual To be punched through to lock bolt with above the vehicle body main part transverse holes rotation be connected.

Described front-wheel 6 is 8 inches of wheel, the logical bottom for being installed on described front fork of the front-wheel 6, the hind axle 71 Left end and the position to the right at middle part carry externally threaded axle, the screw thread for having an axial direction at the end points of the right-hand member of hind axle 71 Hole, the left and right ends portion of the hind axle 71 is respectively penetrated in the revolver pitches the brearing bore that rear end is pitched with the right wheel, Described left rear wheel 72 is 10 inches of wheels, and there is a screwed hole at the center of the left rear wheel 72, and described left rear wheel 72 is fastened to institute The left end for stating hind axle 71 is fixed, and described off hind wheel 73 is 10 inches of wheels, and the centre of the two sides of off hind wheel 73 is respectively inlayed There is a bearing, the off hind wheel 73 is socketed on the right-hand member of the hind axle 71, and it is right to be fastened to a bolt hind axle 71 The screwed hole positioning at end.

Described drive mechanism 8 includes treadle part, step, crankshaft toothed wheel group, backgear group, flywheel and chain, described Treadle is made up of the slice processing part and a steel pipe of Al squeezing material, and the front end of the treadle part Al squeezing material slice processing part has There are cracking for a transverse direction, the treadle below one horizontal circular hole, the horizontal circular hole of the treadle part Al squeezing material slice processing part The horizontal vertical perforation for having a longitudinal direction cracked of part Al squeezing material slice processing part, the treadle part Al squeezing material slice processing A bolt and the nut of twist-on one, the horizontal circular hole of the treadle part Al squeezing material slice processing part are penetrated in the perforation of part longitudinal direction A steel pipe is socketed, and by the cooperation of the screw bolt and nut in the treadle part Al squeezing material slice processing part longitudinally perforation, will The horizontal circular hole of the treadle part Al squeezing material slice processing part is fixed with a steel pipe, the pore of the steel pipe of treadle part one and institute State positioning shaft diameter corresponding, there are slotted hole, the treadle part in the anterior lower section of the treadle part Al squeezing material slice processing part There is a screwed hole with step twist-on the rear end of Al squeezing material, the treadle part is divided to or so two, the steel pipe of treadle part described in two Two of hole and the locating shaft rotates socket, is then respectively matched somebody with somebody in the axial screwed hole of the locating shaft two ends with a bolt Unification pad twist-on is wherein positioned, and two bent axles that the long circle of treadle part described in two is slidably socketed in the crankshaft toothed wheel group are held On, the difference step of twist-on one of the screwed hole of treadle part rear end described in two, described crankshaft toothed wheel group include bent axle, prime gear, Siping City's base bolt and two crankshaft bearings, described bent axle are that the round steel and a disk of two right-angle bending are welded, described Have on the round steel of bent axle two right-angle bending, the screwed hole for respectively having an axial direction at the end points center at two ends, the disk of the bent axle One axis hole and four connecting holes, the right head of two right-angle bending round steel of the bent axle are penetrated in bent axle circle from left to right In the axis hole of piece, then the middle part of two right-angle bending round steel of the bent axle and the middle part of the bent axle disk left surface are welded Connect, described prime gear is modified nylon gear, the right flank of the prime gear has one to correspond to fore bearing described in two There is the step of protrusion, the prime gear in the junction of the boss of endoporus, the prime gear and the prime gear boss Boss on have on groove corresponding to the bent axle round steel, described prime gear and have an axis hole for running through left and right side, it is described The left surface of prime gear has four hexagonal counterbores, and four hexagonal counterbores are connected with to the right through hole, four of the prime gear A nut is respectively inlayed in hexagonal counterbore, the boss of the prime gear is penetrated in the endoporus of fore bearing described in two from left to right, The left head of the bent axle is penetrated in the axis hole of the prime gear and wins to the left to the left, then Siping City's base spiral shell is penetrated into bent axle In four connecting holes of disk and in four through holes of prime gear, and it is fastened in four nuts on the left of prime gear, then by two Crankshaft bearing is socketed on two of bent axle, and is fastened to two bolts in the screwed hole of crankshaft two end and positions, described rear class tooth Wheel group is made up of rear class gear, rear axle and sprocket wheel, the left part rear class gear of the rear axle, the right part and a left side of the rear axle End, is respectively penetrated after be embedded in the vehicle body main part second in the endoporus of the rear bearing of counterbore, and be embedded in the axle In the endoporus of the rear bearing of bearing counterbore, described sprocket wheel is fixedly connected on the right head of the rear axle, and described flywheel is twisted It is connected in the position to the right at the middle part of hind axle 71, described chain is wire-wrapped in described sprocket wheel and described flywheel.

Claims

1. a kind of quick-folding is Shockproof type three-wheel scooter, including quick-folding handlebar, front fork, side arm, folding connecting rod, car Body, front-wheel, hind axle, left rear wheel, off hind wheel and drive mechanism, it is characterized in that：Quick-folding handlebar includes left hand handle, the right hand , upper lock-connecting piece, left lock-connecting piece, right lock-connecting piece, fold substrate and two hands keeper, left hand is being by pipe with right handgrip Upper end is formed as right-angle bending, and the lower end of left hand handle and the lower end of right handgrip are respectively provided with a pair of perforation, the upper end of left hand handle The left part part of lock-connecting piece in connection, the right members of the upper lock-connecting piece of upper end connection of right handgrip, the bottom connection of left hand handle is left Lock-connecting piece, the bottom of right handgrip connects right lock-connecting piece, and left hand is the left side groove that folding substrate is connected to perforation of lower end, the right side Hand is the right groove that folding substrate is connected to perforation of lower end, and folding the anterior left side of substrate has a vertical left side groove, rolls over There is vertical the right groove on the anterior the right of folded substrate, and folding the right back of substrate left side groove has a vertical left round tube hole, folding There is a vertical left rectangular opening right back of the left round tube hole of folded substrate, folds close-fitting in the left rectangular opening of substrate and fills in left flat pin, The front left side twist-on left semicircle hook bolt of left flat pin, folding groove left back on the right of substrate has a vertical right round tube hole, folds There is a vertical right rectangular opening left back of the right round tube hole of substrate, folds close-fitting in the right rectangular opening of substrate and fills in right flat pin, right The forward right side twist-on right semi-circle hook bolt of flat pin, folds the left round tube hole of substrate and folds the right round tube hole connection front fork of substrate, left Lock-connecting piece can with fold substrate left semicircle hook bolt interlocking, right lock-connecting piece can with fold substrate right semi-circle hook bolt interlocking, The left part part of upper lock-connecting piece can be with upper lock-connecting piece right members interlocking, keeper is connected to front fork revolver fork arm by two hands After bottom and the bottom of right wheel fork arm, left hand and right handgrip are folded, left hand is being caught in the hand positioned at revolver fork arm fixed In the C-shaped bayonet socket of position part, right handgrip is caught in C-shaped bayonet socket of the hand positioned at right wheel fork arm keeper；Side arm is by preceding even part, rotation Rotation member, after connect part and groove profile connects part composition, the preceding amplexis hole of preceding even part is fixedly connected in the middle part of front fork, preceding even part it is front and rear each There is amplexis hole, rotary part to connect before being installed on the rear amplexis hole of part, after connect part front end be in groove profile, after connect above and below part groove profile Both sides have mutual to perforation, after connect the back upper place of part and have a transverse holes, after connect part back lower place end in rod, after connect part in rod Rear end connect a groove profile and connect part, there is a mutual cross-perforating left and right sides that groove profile connects part rear end, after to connect part groove profile mutual To be punched through to lock bolt connection rotary part；Folding connecting rod includes front bar, rear bar, sliding lock, little spring and cup head spiral shell Bolt, front bar is the groove profile part that Open Side Down, and the both sides of the front-end and back-end of front bar are respectively laterally mutual to perforation, front bar with one There is twist-on button-headed bolt in the screwed hole of a upward and downward, the screwed hole of front bar upward and downward at the rear portion of Cao's top surface, and rear bar is opening Downward groove profile part, the front portion of rear bar and the both sides of rear end are respectively laterally mutual to perforation, the front end of rear bar groove top surface with one Have and sliding lock and little spring are installed in an elongated hole, the elongated hole of rear bar, the transverse direction of front bar front end is mutual to being punched through to lock bolt Rotate and be connected with the transverse holes of rear even part back upper place, the transverse direction of preceding rod rear end is mutual to be punched through to lock bolt and rear bar front portion It is laterally mutual that connection is rotated to perforation, it is fastened to the sliding lock interlocking that the button-headed bolt of front bar can be installed in rear bar；Car Body bearing, bearing block, locating shaft, shock resistance block, revolver fork, right wheel fork, shock-absorbing catch after vehicle body main part, fore bearing, trim ring, two Constituted with rear board, counterbore before the left side in the middle part of vehicle body main part has first, vehicle body main part first before counterbore connect to the right in lead to Sunk before hole, counterbore before the middle through hole of vehicle body main part connects second to the right, vehicle body main part first behind the back lower place of counterbore coherent first Through hole, vehicle body after counterbore is connected to the right after counterbore after counterbore connects second to the right after hole, vehicle body main part first, vehicle body main part second The front end of main part, which has, a transverse holes above a transverse holes, vehicle body main part, the transverse holes of vehicle body main part front end are positioning shaft hole, There is a horizontal perforation at the rear portion of vehicle body main part, the lower section connection shock resistance block of vehicle body main part rear end, vehicle body main part second before counterbore inlay Embedding fore bearing, the right side for being placed on counterbore before vehicle body main part second with trim ring is fixed, and fore bearing is fixed on into the second of vehicle body main part In preceding counterbore, vehicle body main part second after counterbore inlay one after bearing, bearing after inlaying one in bearing block, bearing base rear end have with The corresponding hole of vehicle body main part rear portion horizontal perforation, the cross-perforating at vehicle body main part rear portion passes through to lock bolt connection revolver fork, axle Bearing and right wheel fork, revolver fork and right wheel fork are all the wheel forks of rear end embedded bearing, and shock-absorbing is connected between revolver fork and right wheel fork Catch, locating shaft penetrates groove profile and connected in the mutual cross-perforating in part rear end, and in the positioning shaft hole of close-fitting press-in vehicle body main part, after Rod rear end is laterally mutual to be connected to being punched through rotating lock bolt with the transverse holes above vehicle body main part, the two ends of hind axle Portion is penetrated in the brearing bore for the rear end that revolver is pitched and right wheel is pitched, and left rear wheel and off hind wheel are connected to the left and right of hind axle Two ends, rear board is bolted to the top that revolver fork and right wheel are pitched, and front-wheel is installed on front fork；Drive mechanism includes treadle Part, step, crankshaft toothed wheel group, backgear group, flywheel and chain, crankshaft toothed wheel group is by bent axle, prime gear and two crankshaft bearings Constitute, bent axle is that the round steel and a disk of two right-angle bending are welded, and prime gear is a nylon gear, prime gear Right flank have a boss for corresponding to fore bearing endoporus, have the groove corresponding to bent axle round steel, prime on the boss of prime gear The boss of gear is penetrated in the endoporus of fore bearing from left to right, and the left head of bent axle is penetrated in the axis hole of prime gear to the left, Coordinated with bolt and nut and fix prime gear and bent axle, then two crankshaft bearings are socketed on to two of bent axle, rear class gear train It is made up of rear class gear, rear axle and sprocket wheel, rear class gear is fixedly connected on the left part of rear axle, the right part of rear axle is penetrated in edge It is embedded in after vehicle body main part second in the rear brearing bore of counterbore, the left end of rear axle is penetrated in the rear brearing bore in bearing block, Sprocket wheel is fixedly connected on the right head of rear axle, and flywheel is installed on the position to the right in the middle part of hind axle, and chain is wire-wrapped in sprocket wheel and flywheel, There is a pore corresponding with locating shaft the front end of treadle part, and there is a slotted hole the anterior lower section of treadle part, the rear end of treadle part have with The screwed hole of step twist-on, the pore of two treadle part front ends rotates the two for being socketed on locating shaft, and the slotted hole of two treadle parts is slided Dynamic to be socketed on two crankshaft bearings of crankshaft toothed wheel group, two steps are fastened in two screwed holes of two treadle part rear ends.

2. quick-folding according to claim 1 is Shockproof type three-wheel scooter, it is characterized in that：The lower end of the left hand handle With a thick-walled metal pipe is respectively plugged with the lower end pore of the right handgrip, the lower end of the left hand handle is inconjunction with what is be located therein Thick-walled metal pipe is provided with a pair of perforation, and the lower end of the left hand handle is to the hole heart extended line of perforation and the right angle of the left hand handle Bending is inconjunction with the thick-walled metal pipe being located therein and is provided with a pair of perforation in the 45 ° of angles overlooked, the lower end of the right handgrip, The lower end of the right handgrip is to the hole heart extended line of perforation with the right-angle bending of the right handgrip in the 45 ° of angles overlooked.

3. quick-folding according to claim 1 is Shockproof type three-wheel scooter, it is characterized in that：Right members by connecting seat and Screw set to constitute, the right-hand member of connecting seat has a vertical hole of cracking, it is vertical mutual to perforation by one that connecting seat cracks that hole cracks, Connecting seat left part is in the circular bar shape of stretching, extension to the left, and the left end of connecting seat circular bar shape has axial screwed hole, screws a left side for set There is a counterbore at end, screws and internal thread is carried in the counterbore of set, screwing the axial direction of the right part of set has a round tube hole, screws set axially Round tube hole and screw the female counterbore insertion of band of set, the round tube hole for screwing set axial direction is socketed on connecting seat stretching to the left In the circular bar shape of exhibition, and by the cooperation of bolt and pad, will screw set be rotatably connected on connecting seat, screw set with interior The counterbore of screw thread can be pinned with the external screw thread twist-on on the left part part convex shoulder.

4. quick-folding according to claim 1 is Shockproof type three-wheel scooter, it is characterized in that：It is in bow to connect part before described Depending on V-shaped, it is described before connect part two before amplexis hole be fixedly connected on by the twist-on of bolt and nut in the middle part of front fork, it is described before connect The rear amplexis hole of part is fixedly connected with the front axle tube of rotary part by the twist-on of bolt and nut, before described rotary part includes Central siphon and two bearings, it is described after connect part front end be in groove profile, it is described after connect part groove profile both sides up and down be provided with it is mutual to perforation, Connect after described part groove profile it is mutual to being punched through to lock bolt connection rotary part.

5. quick-folding according to claim 1 is Shockproof type three-wheel scooter, it is characterized in that：The front bar groove top surface Front end has the transverse width in a slot-type openings, the rear bar groove profile corresponding with the external diameter that the front bar is horizontal, the rear bar There are a slot-type openings rear end of groove top surface, and described sliding lock is made up of slider, locking plate and connecting bolt, and slider is sheet bottom surface There is a working of plastics that a square-tube-shaped is protruded at rear portion, and the square-tube-shaped that slider is protruded is lowered into front end in rear bar elongated hole, then by small bullet Spring is put into the elongated hole of the rear bar from bottom to top, and two of little spring is hanged down the square-tube-shaped and the rear bar of slider protrusion Elongated hole rear end, then locking plate is closed on the square-tube-shaped protruded in push button, penetrated with connecting bolt in the hole of locking plate and be fastened to slider In the pore of prominent square-tube-shaped, little spring is set to be positioned in the elongated hole at the rear portion of locking plate, the rear portion of push button and rear bar.

6. quick-folding according to claim 1 is Shockproof type three-wheel scooter, it is characterized in that：Positioned at the vehicle body main part Before second around counterbore, it is provided with that one is provided with below several horizontal screwed holes, the vehicle body main part positioning shaft hole is vertical Screwed hole, is that several perforation are provided with the metal ring of a shim-like with described trim ring, and described bearing block is metal punching There is a counterbore of an embedded bearing part, the front end of the bearing block, and there is a hole rear end of the bearing block, the bearing block rear hole with The vehicle body main part rear portion horizontal perforation is corresponding.

7. quick-folding according to claim 1 is Shockproof type three-wheel scooter, it is characterized in that：The revolver is pitched and described To inner side right-angle bending above the edge of the oriented inner side right-angle bending in top of right wheel fork, the revolver fork and right wheel fork The connecting hole being connected with rear board is opened on edge, the rear end punching that the revolver fork and the right wheel are pitched has the counterbore of embedded bearing, Revolver fork and the right wheel, which are pitched, respectively inlays a bearing in the counterbore of rear end, described shock-absorbing catch is by sheet metal punching press The right and left into, the shock-absorbing catch has a upward flanging, and the front and rear of the flanging of shock-absorbing catch two respectively has a hole, described to keep away The front and rear gaps that the holes for shaking the flanging of catch two pitches front portion by rivet and revolver fork and the right wheel are riveted.

8. quick-folding according to claim 1 is Shockproof type three-wheel scooter, it is characterized in that：Described locating shaft is one Metal circular shaft, the locating shaft two ends respectively have the screwed hole of an axial direction, and there is the counterbore of a radial direction side in the middle of the locating shaft, Described locating shaft penetrates the groove profile and connected in the mutual cross-perforating in part side, and then close-fitting is pressed into the vehicle body main part In positioning shaft hole, then from the groove profile connect the mutual cross-perforating of part opposite side in pass, and cause the locating shaft radial direction Counterbore corresponds to screwed hole vertical below the vehicle body main part positioning shaft hole, with a bolt in the vehicle body main part positioning shaft hole Twist-on is fixed into the radial direction counterbore of the locating shaft in the vertical screwed hole in lower section, and the groove profile is connected the mutual transverse direction of part Perforation with the locating shaft two ends portion rotate be connected, the rear rod rear end laterally it is mutual to be punched through to lock bolt with it is described Transverse holes above vehicle body main part rotate connection.

9. quick-folding according to claim 1 is Shockproof type three-wheel scooter, it is characterized in that：Described treadle is by aluminium The slice processing part of extrusion section bar and a steel pipe are constituted, and there is a horizontal circle front end of the treadle part Al squeezing material slice processing part There are cracking for a transverse direction, the treadle part Al squeezing material below hole, the horizontal circular hole of the treadle part Al squeezing material slice processing part The slice processing part horizontal vertical perforation for having a longitudinal direction cracked, the treadle part Al squeezing material slice processing part longitudinal direction is worn A bolt and the nut of twist-on one are penetrated in hole, the horizontal circular hole of the treadle part Al squeezing material slice processing part is socketed a steel pipe, And by the cooperation of the screw bolt and nut in the treadle part Al squeezing material slice processing part longitudinally perforation, by the treadle part aluminium The horizontal circular hole of extrusion section bar slice processing part is fixed with a steel pipe, pore and the positioning shaft diameter of the steel pipe of treadle part one Corresponding, the anterior lower section of the treadle part Al squeezing material slice processing part has after slotted hole, the treadle part Al squeezing material There is a screwed hole with step twist-on at end, the treadle part is divided to or so two.

10. quick-folding according to claim 1 is Shockproof type three-wheel scooter, it is characterized in that：Described crankshaft toothed wheel Group includes bent axle, prime gear, Siping City's base bolt and two crankshaft bearings, described bent axle be two right-angle bending round steel with One disk is welded, the round steel of described bent axle two right-angle bending, the screwed hole for respectively having an axial direction at the end points center at two ends, There are an axis hole and four connecting holes on the disk of the bent axle, the right head of two right-angle bending round steel of the bent axle is from left-hand The right side is penetrated in the axis hole of the bent axle disk, and then the middle part of two right-angle bending round steel of the bent axle is justified with the bent axle The middle part welding of piece left surface, the right flank of the prime gear has a boss for corresponding to fore bearing endoporus described in two, described The junction of prime gear and the prime gear boss, which also has to have on the step of protrusion, the boss of the prime gear, to be corresponded to The groove of the bent axle round steel.