CN206476020U

CN206476020U - The portable three-wheel scooter of folding grip Shockproof type

Info

Publication number: CN206476020U
Application number: CN201720147387.2U
Authority: CN
Inventors: 庞明方
Original assignee: Taicang Chezhongbao Leisure Products Co Ltd
Current assignee: Taicang Chezhongbao Leisure Products Co Ltd
Priority date: 2017-02-17
Filing date: 2017-02-17
Publication date: 2017-09-08
Anticipated expiration: 2027-02-17

Abstract

A kind of portable three-wheel scooter of folding grip Shockproof type, including quick-folding handlebar, front fork, side arm, lower link, upper connecting rod, vehicle body, Quick Release, front-wheel, hind axle, left rear wheel, off hind wheel and drive mechanism, side arm is by preceding even part, rotary part connects part with after and is formed by connecting, lower link connects part with after and locating shaft is connected, upper connecting rod connects part with after and vehicle body main part is connected, 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, Quick Release is connected to the lower section of vehicle body main part front end, interlocking is in the rear end of lower link, front-wheel is installed on front fork, 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

The portable three-wheel scooter of folding grip Shockproof type

Technical field

The utility model is related to a kind of three-wheeled collapsible scooter, and more particularly to a kind of portable three-wheel of folding grip Shockproof type is stepped on 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 --- the portable three-wheel scooter of folding grip Shockproof type.The purpose of this utility model is realized in 's；The portable three-wheel scooter of folding grip Shockproof type, including quick-folding handlebar, front fork, side arm, lower link, upper connecting rod, vehicle body, Quick Release, 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 connects part composition with after, 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 rear end Upper and lower respectively has a transverse holes, after connect part groove profile it is mutual to being punched through to lock bolt connection rotary part；Lower link front end Transverse holes by lock bolt connect with after below part rear end transverse holes rotation be connected, upper connecting rod is made up of metal round rod Part, the transverse holes rotation that the front end of upper connecting rod connects with after above part rear end is connected；Vehicle body by vehicle body main part, fore bearing, trim ring, Bearing, bearing block, locating shaft, shock resistance block, revolver fork, right wheel fork, shock-absorbing catch and rear board are constituted after two, 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, the front and rear of vehicle body main part leading section respectively has a horizontal stroke To perforation, the preceding cross-perforating of vehicle body main part leading section is positioning shaft hole, and the rear cross-perforating of vehicle body main part leading section is upper company There are a horizontal slot-type openings below the connecting hole of bar, vehicle body main part front end, there is one to be opened with groove profile in vehicle body main part front end There are a horizontal perforation, the lower section connection shock resistance block of vehicle body main part rear end, vehicle body master in the intersecting longitudinal circular hole of mouth, the rear portion of vehicle body main part Counterbore inlays fore bearing before the second of part, and the right side for being placed on counterbore before vehicle body main part second with trim ring is fixed, and fore bearing is fixed In counterbore before the second of vehicle body main part, vehicle body main part second after counterbore inlay one after bearing, inlay a rear axle in bearing block Hold, have the holes corresponding with the horizontal perforation of vehicle body main part first and the second horizontal perforation, vehicle body main part before and after bearing block rearward end The cross-perforating at rear portion to lock bolt connection revolver by being pitched, bearing block and right wheel are pitched, and is connected with and is kept away between revolver fork and right wheel fork Catch is shaken, revolver fork and right wheel fork are all the wheel forks of rear end embedded bearing, and locating shaft is penetrated in the transverse holes of lower link rear end, and In the positioning shaft hole of close-fitting press-in vehicle body main part, the rear end of upper connecting rod is penetrated in the connecting hole of vehicle body main part upper connecting rod, Quick Release Be connected in longitudinal circular hole of vehicle body main part and slot-type openings in, and interlocking is in the ∩ type gap of lower link rearward end, trailing wheel The both ends of axle are 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 trailing wheel The left and right ends of axle, 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 Including 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 bearing is constituted, and bent axle is that the round steel and a disk of two right-angle bending are welded, and prime gear is a nylon gear, The right flank of prime gear has on a boss for corresponding to fore bearing endoporus, the boss of prime gear and had corresponding to bent axle round steel Groove, the boss of prime gear is penetrated in the endoporus of fore bearing from left to right, and the left head of bent axle is penetrated in prime gear to the left In axis hole, 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 is made up of rear class gear, rear axle and sprocket wheel, and rear class gear is fixedly connected on the left part of rear axle, and the right part of rear axle is worn Enter to be 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 bearing in bearing block Kong Zhong, 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, chain be wire-wrapped in sprocket wheel and Flywheel, treadle part is the slice processing part by Al squeezing material, and there are the pore corresponding with locating shaft, treadle part in the front end of treadle part There is slotted hole anterior lower section, and there are the screwed hole with step twist-on, the pore turning set of two treadle part front ends in the rear end of treadle part Two of locating shaft is connected to, the slotted hole of two treadle parts is slidably socketed on two crankshaft bearings of crankshaft toothed wheel group, and two steps are twisted In two screwed holes for being connected to two treadle part rear ends；Quick Release is opened, vehicle body is folded up, in the effect of lower link and upper connecting rod Under, vehicle body is drawn in together with lower link and upper connecting rod to front fork stem, in addition the folding of quick-folding handlebar, reaches perfect folding Effect.

The beneficial effects of the utility model are：The ingenious cooperation that the utility model passes through profile piece so that whole vehicle frame base No electric welding in sheet, represents a kind of new trend of the manufacturing process of three-wheel scooter；Handlebar of the present utility model is used The form of quick-folding handlebar so that the folding of handlebar reaches both most simply, and reach most effective；Front fork is connected to lower clamping piece In the upward and downward circular hole of left and right rear end, the amplexis hole of the preceding even front end of part two is fixedly connected on front fork, the amplexis hole of preceding even part rear end Connect rotary part, after connect the front end of part again by being connected to lock bolt with rotary part, allow turning mechanism both simply and to have had Effect；The front end of upper connecting rod and lower link connects the rear end difference of the upper and lower of part rear end, upper connecting rod and lower link after being connected to The connecting hole of vehicle body main part upper connecting rod and the both ends of locating shaft are connected to, so as to form the linkage structure of four-bar linkage；Vehicle body The lower section connection shock resistance block of main part rear end, 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 the organigram of the utility model vehicle body main part；

Fig. 5 is the structural representation of the utility model crankshaft toothed wheel group；

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, 41 --- lower link, 42 --- upper connecting rod, 5 --- vehicle body, 6 --- Quick Release, 71 --- front-wheel, 72 --- hind axle, 73 --- left rear wheel, 74 --- off hind wheels, 8 --- drive Motivation structure；Wherein quick-folding handlebar 1 also includes：The upper lock-connecting piece of 11 --- left hand handle, 12 --- right handgrips, 13 ---, 14 --- left lock-connecting piece, 15 --- right lock-connecting piece, 16 --- fold substrate, 17 --- and hand is keeper.

Embodiment：

According to Fig. 1, the portable three-wheel scooter of described folding grip Shockproof type, including quick-folding handlebar 1, front fork 2, side arm 3rd, lower link 41, upper connecting rod 42, vehicle body 5, Quick Release 6, front-wheel 71, hind axle 72, left rear wheel 73, off hind wheel 74 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 and after connect part, it is described before connect the blank that part is aluminium extruded type, Connect part before described in the V-shaped overlooked, it is described before connect the circular hole that two front ends and a rear end of part respectively have a band to crack, it is described before Even two bands of two front ends of part crack circular hole crack it is vertical be respectively provided with one laterally to perforation, it is described before connect the band of part front end and 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 the cracking of circular hole It is vertical to 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 to crack and vertical laterally perforation be referred to as For rear 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 the middle part of front fork, it is described before Even 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, and described rotary part includes Front axle tube and two bearings, the upper and lower side of front axle tube pore, which is respectively milled with, places the counterbore that spin axis is held, and two bearings are embedded in front axle respectively In the counterbore of pipe upper and lower side, and by the endoporus of two bearings, corresponding to connecting mutual pair in two sides above and below the groove profile of part front end after described 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 connect part groove profile Up and down both sides 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 connect part rear end Upper and lower respectively has a transverse holes, it is described after connect part groove profile it is mutual to being punched through to lock bolt connection rotary part.

Described lower link 41 is stamped to form by sheet metal, the both sides of lower link 41 be in flat strip shaped arranged side by side, it is described under There is horizontal sheet connection the anterior upper edge of 41 liang of connecting rod flat strip shaped arranged side by side, and there is phase the front end of 41 liang of flat strip shapeds of lower link There are mutual transverse holes, the left flat strip shaped rear end of lower link 41 in mutual transverse holes, the rear end of 41 liang of flat strip shapeds of lower link Have a ∩ shape gap below portion, the mutual transverse holes in the front ends of 41 liang of flat strip shapeds of lower link by lock bolt with it is described Connect the transverse holes below part rear end afterwards and rotate connection.

Described upper connecting rod 42 is the part being made up of metal round rod, and the front-end and back-end of the upper connecting rod 42 are all in the left Right-angle bending, respectively have a horizontal screw thread at the two-end-point of the right-angle bending of the front-end and back-end of the upper connecting rod 42 to the left Hole, the right-angle bending of the front end of upper connecting rod 42 to the left is penetrated after described in the transverse holes connected above part rear end, and uses a spiral shell Bolt is fastened to the front end of the upper connecting rod 42 and positioned to the left in the screwed hole of right-angle bending end points.

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 Through hole after counterbore is connected to the right after hole, the vehicle body main part second, the front and rear of the vehicle body main part leading section respectively has one laterally to wear Hole, the preceding cross-perforating of the vehicle body main part leading section is to be provided with one below positioning shaft hole, the vehicle body main part positioning shaft hole Vertical screwed hole, the rear cross-perforating of the vehicle body main part leading section is the connecting hole of upper connecting rod, the vehicle body main part front end Lower section have a horizontal slot-type openings, there is a longitudinal circular hole intersected with slot-type openings the vehicle body main part front end, described There is a horizontal perforation at the rear portion of vehicle body main part, before the rear portion horizontal perforation back upper place of vehicle body main part is in flat, vehicle body main part flat Respectively be provided with a screwed hole afterwards, the vehicle body main part second before counterbore inlay described fore bearing, described fore bearing is 6813 The deep groove ball bearing of model, the right side of counterbore before the vehicle body main part second is placed on described trim ring, is penetrated with several bolts In the several perforation of trim ring and be fastened to before the vehicle body main part second around counterbore in several horizontal screwed holes it is fixed, Described trim ring is that several perforation are provided with the metal ring of a shim-like, the vehicle body main part second after counterbore inlay an institute Two screwed holes in the rear bearing stated, the vehicle body main part flat are by the shock resistance block described in two bolt connections, and described keeps away Shake block by polyurethane into, described bearing block is a metal stamping, and there is the counterbore of an embedded bearing front end of the bearing block, There is hole the rear end of the bearing block, and the hole of the bearing block rearward end is corresponding with the vehicle body main part rear portion horizontal perforation, described The rear bearing described in one is inlayed in the counterbore of 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 rear end punching that the revolver fork and the right wheel are pitched has the counterbore of embedded bearing, institute State revolver fork and the right wheel pitched in the counterbore of rear end and respectively inlays a bearing, described shock-absorbing catch is stamped to form by sheet metal, The right and left of the shock-absorbing catch has upward flanging, and the front and rear of the flanging of shock-absorbing catch two respectively has a hole, the shock-absorbing The holes of the flanging of catch two is pitched by rivet and the revolver and the right wheel is pitched anterior front and rear gaps and riveted, before the revolver fork Stomidium is corresponding with the bearing block rear hole, and corresponding to the left surface of the vehicle body main part rear portion horizontal perforation, the right wheel The right flank that front aperture corresponds to the vehicle body main part rear portion horizontal perforation is pitched, by described revolver being pitched to lock bolt, described Bearing block and described right wheel fork be connected to the rear portion of 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 transverse holes of the side flat strip shaped rear end of lower link 41, Then close-fitting is pressed into the positioning shaft hole of the vehicle body main part, then the transverse direction from the opposite side flat strip shaped rear end of lower link 41 Passed in hole, and cause the radial direction counterbore of the locating shaft to correspond to screw thread vertical below the vehicle body main part positioning shaft hole Hole, with radial direction counterbore of the twist-on to the locating shaft in bolt screwed hole vertical below the vehicle body main part positioning shaft hole Middle fixation, and the mutual transverse holes in described 41 liang of flat strip shaped rear ends of lower link is connected with locating shaft two ends portion rotation, institute The right-angle bending to the left for stating the rear end of upper connecting rod 42 is penetrated in the connecting hole of the vehicle body main part upper connecting rod, and with a bolt twist-on Positioned in the rear end of the upper connecting rod 42 to the left screwed hole of right-angle bending end points.

Described Quick Release 6 is made up of hole cylinder, fast dismounting handle, circle hook bolt, concave surface pad, spring and Anti-slip nut, band Hole cylinder is that the radial direction of a metal cylinder side is provided with a perforation, and hole cylinder penetrates being opened with groove profile for the vehicle body main part front end In mouthful intersecting longitudinal circular hole, and the radial perforation of hole cylinder is corresponded to the slot-type openings of the vehicle body main part front end, soon It is that one end is connected with two disks side by side, had on two disks side by side on the part of a mutual eccentric orfice, fast dismounting handle mutually to tear handle open Eccentric orfice by rivet and enclose hook bolt circle head bore rotate be connected and make the circle head of circle hook bolt positioned at fast dismounting handle two side by side Disk between, circle hook bolt penetrates concave surface pad, penetrated again in a spring, then penetrates in corresponding to the vehicle body main part front end Slot-type openings in hole cylinder radial perforation in, then screw again in described Anti-slip nut, allow 6 turns of described Quick Release Dynamic to be connected in the longitudinal circular hole intersected with slot-type openings of the vehicle body main part front end, the described interlocking of Quick Release 6 is under described On ∩ shape gap below the left flat strip shaped rearward end of connecting rod 41.

Described front-wheel 71 is 8 inches of wheel, and the front-wheel 71 is installed on the bottom of the front fork, the hind axle 72 The position to the right at left end and middle part carries the screwed hole for having an axial direction at externally threaded axle, the end points of the right-hand member of hind axle 72, The left and right ends portion of the hind axle 72 is respectively penetrated in the revolver pitches the brearing bore that rear end is pitched with the right wheel, described Left rear wheel 73 be 10 inches of wheels, there is a screwed hole at the center of the left rear wheel 73, described left rear wheel 73 be fastened to it is described after The left end of wheel shaft 72 is fixed, and described off hind wheel 74 is 10 inches of wheels, and the centre of the two sides of off hind wheel 74 is respectively inlaid with one Bearing, the off hind wheel 74 is socketed on the right-hand member of the hind axle 72, and is fastened to a bolt right-hand member of hind axle 72 Screwed hole is positioned.

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 72, described chain is wire-wrapped in described sprocket wheel and described flywheel.

Claims

1. a kind of portable three-wheel scooter of folding grip Shockproof type, including quick-folding handlebar, front fork, side arm, lower link, upper company Bar, vehicle body, Quick Release, front-wheel, hind axle, left rear wheel, off hind wheel and drive mechanism, it is characterized in that：Quick-folding handlebar includes a left side Hand handle, right handgrip, upper lock-connecting piece, left lock-connecting piece, right lock-connecting piece, folding substrate and two hands are keeper, left hand handle and right handgrip It is to be formed by the upper end of pipe as right-angle bending, the lower end of left hand handle and the lower end of right handgrip are respectively provided with a pair of perforation, left hand The upper lock-connecting piece of upper end connection left part part, the right members of the upper lock-connecting piece of upper end connection of right handgrip, under left hand handle End connects left lock-connecting piece, and the bottom of right handgrip connects right lock-connecting piece, and lower end is connected to folding substrate by left hand to perforation Left side groove, right handgrip lower end is connected to the right groove for folding substrate to perforation, and folding the substrate anterior left side has one vertical Left side groove, folding the anterior the right of substrate has vertical the right groove, and folding the right back of substrate left side groove has one vertical Left round tube hole, folding the right back of the left round tube hole of substrate has a vertical left rectangular opening, folds close-fitting plug in the left rectangular opening of substrate Entering groove left back on the right of left flat pin, the front left side twist-on left semicircle hook bolt of left flat pin, folding substrate has a vertical right side Round tube hole, folding the left back of the right round tube hole of substrate has a vertical right rectangular opening, folds close-fitting in the right rectangular opening of substrate and fills in Right flat pin, the forward right side twist-on right semi-circle hook bolt of right flat pin folds the left round tube hole of substrate and folds the right round tube hole of substrate Connect front fork, the left semicircle hook bolt interlocking that left lock-connecting piece can be with folding substrate, the right semi-circle that right lock-connecting piece can be with folding substrate Hook bolt interlocking, the right members interlocking that the left part part of upper lock-connecting piece can be with upper lock-connecting piece, before two hands are connected to keeper The bottom of revolver fork arm and the bottom of right wheel fork arm are pitched, after left hand and right handgrip are folded, left hand is being caught in positioned at revolver The hand of fork arm is in the C-shaped bayonet socket of keeper, and right handgrip is caught in C-shaped bayonet socket of the hand positioned at right wheel fork arm keeper；Before Frame by preceding even part, rotary part and after connect part and constitute, the preceding amplexis hole of preceding even part is fixedly connected in the middle part of front fork, before preceding even part Respectively there is amplexis hole, rotary part to connect before being installed on the rear amplexis hole of part afterwards, after connect part front end be in groove profile, after connect part groove profile Both sides have mutual to perforation up and down, after connect the upper and lower of part rear end and respectively have a transverse holes, after connect part groove profile it is mutual to perforation By to lock bolt connection rotary part；The transverse holes of lower link front end with after by connecting the transverse direction below part rear end to lock bolt Hole rotates connection, and upper connecting rod is the part being made up of metal round rod, and the front end of upper connecting rod connects the transverse holes above part rear end with after Rotate connection；Vehicle body bearing, bearing block, locating shaft, shock resistance block, revolver fork, right wheel after vehicle body main part, fore bearing, trim ring, two Fork, shock-absorbing catch and rear board are constituted, counterbore before the left side in the middle part of vehicle body main part has first, vehicle body main part first before counterbore to The back lower place of counterbore connects before through hole in right connection, counterbore before the middle through hole of vehicle body main part connects second to the right, vehicle body main part first Counterbore is connected to the right after counterbore after counterbore connects second to the right after counterbore after passing through first, vehicle body main part first, vehicle body main part second Through hole afterwards, the front and rear of vehicle body main part leading section respectively has a cross-perforating, and the preceding cross-perforating of vehicle body main part leading section is locating shaft Hole, the rear cross-perforating of vehicle body main part leading section is to have a horizontal groove below the connecting hole of upper connecting rod, vehicle body main part front end Type opening, has a longitudinal circular hole intersected with slot-type openings, there is a horizontal perforation at the rear portion of vehicle body main part in vehicle body main part front end, 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 Have before and after bearing after inlaying one in bearing after counterbore inlays one, bearing block, bearing block rearward end and crossed with vehicle body main part first The hole holes corresponding with the second horizontal perforation, the cross-perforating at vehicle body main part rear portion passes through to lock bolt connection revolver fork, bearing Seat and right wheel fork, are connected with shock-absorbing catch between revolver fork and right wheel fork, revolver fork and right wheel fork are all the wheels of rear end embedded bearing Fork, locating shaft is penetrated in the transverse holes of lower link rear end, and in the positioning shaft hole of close-fitting press-in vehicle body main part, the rear end of upper connecting rod Penetrate in the connecting hole of vehicle body main part upper connecting rod, Quick Release be connected in longitudinal circular hole of vehicle body main part and slot-type openings in, and Interlocking is in the ∩ type gap of lower link rearward end, and the both ends of hind axle are penetrated in the bearing for the rear end that revolver is pitched and right wheel is pitched In endoporus, left rear wheel and off hind wheel are connected to the left and right ends of hind axle, rear board be bolted to revolver fork and The top of right wheel fork, 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 made up of bent axle, prime gear and two crankshaft bearings, bent axle be two right-angle bending round steel and One disk is welded, and prime gear is a nylon gear, and the right flank of prime gear has one to correspond to the convex of fore bearing endoporus There is the groove corresponding to bent axle round steel on platform, the boss of prime gear, the boss of prime gear is penetrated in fore bearing from left to right In endoporus, the left head of bent axle is penetrated in the axis hole of prime gear to the left, is coordinated with bolt and nut and is consolidated prime gear and bent axle Calmly, then by two crankshaft bearings two of bent axle is socketed on, rear class gear train is made up of rear class gear, rear axle and sprocket wheel, rear class tooth Wheel is fixedly connected on the left part of rear axle, and the right part of rear axle is penetrated in being embedded in after vehicle body main part second in the rear bearing of counterbore Kong Zhong, 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 head of rear axle, and flywheel is installed Position to the right in the middle part of hind axle, chain is wire-wrapped in sprocket wheel and flywheel, and there is the pipe corresponding with locating shaft the front end of treadle part There is slotted hole hole, the anterior lower section of treadle part, and there are the screwed hole with step twist-on, the pipe of two treadle part front ends in the rear end of treadle part Hole, which is rotated, is socketed on two of locating shaft, and the slotted holes of two treadle parts is slidably 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. the portable three-wheel scooter of folding grip Shockproof type according to claim 1, 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. the portable three-wheel scooter of folding grip Shockproof type according to claim 1, 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. the portable three-wheel scooter of folding grip Shockproof type according to claim 1, 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. the portable three-wheel scooter of folding grip Shockproof type according to claim 1, it is characterized in that：Described lower link is by gold Category piece is stamped to form, and the lower link both sides are in flat strip shaped arranged side by side, the anterior upper edge of the lower link two flat strip shaped arranged side by side There is horizontal sheet connection, the front end of the flat strip shaped of lower link two there are mutual transverse holes, the flat strip shaped of lower link two Rear end, which has below mutual transverse holes, the left flat strip shaped rearward end of lower link, a ∩ shape gap, and the lower link two is flat The mutual transverse holes in the front end of strip by lock bolt with it is described after the transverse holes rotation that connects below part rear end be connected, it is described Upper connecting rod is the part being made up of metal round rod, the front-end and back-end of the upper connecting rod all in right-angle bending to the left, it is described on Respectively there is a horizontal screwed hole at the two-end-point of the right-angle bending of the front-end and back-end of connecting rod to the left.

6. the portable three-wheel scooter of folding grip Shockproof type according to claim 1, 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. the portable three-wheel scooter of folding grip Shockproof type according to claim 1, 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. the portable three-wheel scooter of folding grip Shockproof type according to claim 1, 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 transverse holes of the lower link side flat strip shaped rear end, and then close-fitting is pressed into the vehicle body main part In positioning shaft hole, then pass from the transverse holes of the lower link opposite side flat strip shaped rear end, and cause the footpath of the locating shaft Correspond to screwed hole vertical below the vehicle body main part positioning shaft hole to counterbore, with a bolt in the vehicle body main part locating shaft Twist-on is fixed into the radial direction counterbore of the locating shaft in vertical screwed hole below hole, and makes after the flat strip shaped of lower link two The mutual transverse holes in end are rotated with the locating shaft two ends portion to be connected.

9. the portable three-wheel scooter of folding grip Shockproof type according to claim 1, 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. the portable three-wheel scooter of folding grip Shockproof type according to claim 1, 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.