CN1271670A

CN1271670A - Car body frame of small-sized motorcycle type vehicle

Info

Publication number: CN1271670A
Application number: CN 00106965
Authority: CN
Inventors: 道坂进; 末田健一
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 1999-04-28
Filing date: 2000-04-26
Publication date: 2000-11-01
Anticipated expiration: 2020-04-26
Also published as: CN1211247C; JP4109791B2; ITTO20000358A0; JP2000313391A; ITTO20000358A1; IT1320047B1; TW442416B

Abstract

The body frame for scooter type vehicle of present invention comprises a molded front frame having a front head pipe part at the front end that can controls the direction and support the front wheel, and a rear frame molded into a shape of upwardly extending to the rear to combine with the rear end of the front frame, providing that the positional displacement of the head pipe part to the axial centerline of the rear frame can be relatively suppressed, even if there is error in assembling the rear frame to the front frame.

Description

Car body frame of small-sized motorcycle type vehicle

The present invention relates to car body frame of small-sized motorcycle type vehicle, be particularly related to motor cycle type vehicle car body framework with front frame and rear portion vehicle frame, but this front frame has the head pipe that steering twelve Earthly Branches brought forward is taken turns by mold forming and at its front end, and above-mentioned rear portion vehicle frame contour forming is to be connected to the shape of back upper place extension and with the rear end of front frame.

In the past, it is known that such car body framework is opened flat 10-218065 communique etc. by for example spy.

But, in above-mentioned existing car body framework, be to use the joint face of basic horizontal to link the rear end of front frame and the front end of rear portion vehicle frame, therefore, head pipe and above-mentioned joint face to the multiview drawing of the rear end of the front frame plane projection parallel with the link surface of the front end of rear portion vehicle frame on, the lower end that above-mentioned joint face is configured in pipe from the beginning away from the position on, when having produced the rear portion vehicle frame to the assembly error of front frame, the offset with respect to the Width line of centers of rear portion vehicle frame of a pipe is bigger.

The present invention makes in view of such situation, its objective is provides, even the rear portion vehicle frame has produced assembly error to the assembling of front frame, also the head pipe can be suppressed to be smaller car body frame of small-sized motorcycle type vehicle in the position deviation of the Width line of centers of rear portion vehicle frame.

In order to achieve the above object, the car body frame of small-sized motorcycle type vehicle of the application's the 1st invention, its small size motorcycle comprises front frame and rear portion vehicle frame, but this front frame has the head pipe that steering twelve Earthly Branches brought forward is taken turns by contour forming and at its front end, this rear portion vehicle frame is the shape of extending to the back upper place by contour forming, and link with the rear end of front frame, it is characterized in that, forwardly connecting the rear portion coupling plate on the coupling plate, this front portion coupling plate is located at the rear end of above-mentioned front frame and tilts to the front lower place, and this rear portion coupling plate is located at the front end of above-mentioned rear portion vehicle frame and tilts to the front lower place, and coincide with on the above-mentioned anterior car knot board.

According to such formation, by connecting rear end that is located at front frame and the anterior coupling plate that has a down dip forward overlappingly and being located at the rear portion coupling plate that has a down dip forward on the vehicle frame of rear portion, head pipe and above-mentioned link surface to linking on the multiview drawing of the parallel plane projection of the joint face of boards with two, above-mentioned joint face is configured in and the more approaching position of head pipe, on front frame, assemble when producing assembly error at the rear portion vehicle frame, the position deviation of the Width line of centers of the relative rear portion vehicle frame of a pipe can be suppressed for smaller.

In addition, second invention, it is characterized in that, the extended line of at least 1 axis that connects a plurality of bolts of anterior coupling plate and rear portion coupling plate is set between the vehicle by the upper end of steering handle and front-wheel, and above-mentioned steering handle can carry out the steering operation and by above-mentioned piping support.According to such structure, in head pipe and above-mentioned link surface projection on the multiview drawing of the face parallel with the joint face of anterior coupling plate and rear portion coupling plate, above-mentioned link surface is configured in head and manages on the approaching position, when producing the rear portion vehicle frame, the position deviation with respect to the Width line of centers of rear portion vehicle frame of a pipe can be suppressed for littler the assembly error of front frame.

On the basis of the formation that the 3rd invention is the 2nd invention, it is characterized in that, on a side of above-mentioned anterior coupling plate and above-mentioned rear portion coupling plate, be provided with chimeric teat highlightedly, the chimeric recess of chimeric this chimeric teat is located on the opposing party of above-mentioned anterior coupling plate and above-mentioned rear portion coupling plate, between the upper end and the axletree of front-wheel of the extended line of the axis of above-mentioned chimeric teat and above-mentioned chimeric recess by the steering handle, this steering handle can carry out the direction of operating operation and by above-mentioned piping support.According to such formation, head pipe and above-mentioned joint face on the multiview drawing of projection on the plane parallel with the link surface of anterior coupling plate and rear portion coupling plate, above-mentioned joint face is configured in head and manages on the approaching position, when producing the rear portion vehicle frame to the assembly error of anterior chassis mount, the position deviation with respect to the rear portion vehicle frame of a pipe can be suppressed for littler, and, the assembly precision in the time of can improving mutual binding front frame and rear portion vehicle frame and assemble.

The car body frame of small-sized motorcycle type vehicle of the 4th invention, be on the basis of formation of above-mentioned the 1st～3 invention, it is characterized in that, above-mentioned front frame has the head pipe integratedly, rearward extends and be configured in the bearing plate framework of the below of pedal bottom plate from this pipe to the decline framework of back lower place extension, from the lower end of this decline framework, above-mentioned rear portion coupling plate coincides with on the above-mentioned anterior coupling plate from the below, and this front portion coupling plate is located at the rear end of bearing plate framework.According to such formation, owing to do not need to guarantee that the rear portion framework is disposed at base plate supports the ground, space of the top, rear end of structural portion that pedal bottom plate is configured to the top, rear end that base plate is supported structural portion, therefore, can the earth set the space of pedal bottom plate.

The small size motorcycle car body member of the 5th invention, be on the basis of above-mentioned the 3rd invention, it is characterized in that, in the connecting portion integral body of the anterior coupling plate of the pair of right and left on being located at above-mentioned front frame and the rear portion coupling plate that is located at the pair of right and left on the vehicle frame of above-mentioned rear portion, above-mentioned chimeric teat and above-mentioned chimeric recess arrangement are on 3 a plurality of positions more than the position, according to such formation, can further improve the assembly precision of front frame and rear portion vehicle frame.

Fig. 1 is the lateral plan of small size motorcycle.

Fig. 2 is the anterior enlarged side view of small size motorcycle.

Fig. 3 is the rear portion enlarged side view of small size motorcycle.

Fig. 4 be omitted Fig. 3 under the state of accommodating case and Fuel Tank 4 to view.

Fig. 5 is that front frame and rear portion vehicle frame are separated from each other the block diagram under the state.

Fig. 6 is the enlarged side view of front frame.

Fig. 7 be Fig. 67 to view.

Fig. 8 is the 8-8 line amplification view of Fig. 6.

Fig. 9 is the 9-9 line amplification view of Fig. 7.

Figure 10 is the 10-10 line amplification view of Fig. 7.

Figure 11 is the enlarged side view of rear portion vehicle frame.

Figure 12 be Figure 11 12 to view.

Figure 13 is the 13-13 line amplification view of Figure 12.

Figure 14 is the side view in partial cross-section of the shaking bearing portion of expression and vehicle frame installation.

Figure 15 is the 15-15 line cutaway view of Figure 14.

Figure 16 is the lateral plan of the installation portion that the car body framework is installed of back buffer parts.

Figure 17 is the 17-17 line cutaway view of Figure 16.

Figure 18 is the 18-18 line cutaway view of Figure 17.

Figure 19 is the lateral plan of subframe.

Figure 20 be Figure 19 20 to looking expanded view.

Figure 21 be Fig. 1 21 to view.

Figure 22 is the 22-22 line cutaway view of Figure 21.

Figure 23 is the 23-23 line cutaway view of Figure 22.

Figure 24 is an instruction diagram of the offset of the line of centers of the relative rear portion of pipe vehicle frame.(a) be the lateral plan of main car frame.(b) B that is (a) is to view.

Figure 25 be the link surface of front frame and rear portion vehicle frame be under the basic horizontal state with the corresponding figure of Figure 24.(a) be the lateral plan of main car frame.(b) B that is (a) is to view.

Below the one embodiment of the invention shown in reference to the accompanying drawings illustrate example of the present invention.

Fig. 1～Figure 24 represents one embodiment of the invention.Fig. 1 is the lateral plan of small size motorcycle; Fig. 2 is the anterior enlarged side view of small size motorcycle; Fig. 3 is the rear portion enlarged side view of small size motorcycle; Fig. 4 has omitted the block diagram under the state of accommodating case and Fuel Tank; Fig. 5 is that front frame and rear portion vehicle frame are separated from each other the block diagram under state; Fig. 6 is the enlarged side view of front frame; Fig. 7 be Fig. 67 to view; Fig. 8 is the 8-8 line amplification view of Fig. 6; Fig. 9 is the 9-9 line amplification view of Fig. 7; Figure 10 is the 10-10 line amplification view of Fig. 7; Figure 11 is the enlarged side view of rear portion vehicle frame; Figure 12 be Figure 11 12 to view; Figure 13 is the 13-13 line amplification view of Figure 12; Figure 14 is the partial, partially-cross-sectioned side-elevation view of expression to the shaking bearing portion of the driving engine of car body framework installation; Figure 15 is the 15-15 line cutaway view of Figure 14; Figure 16 is the lateral plan of the installation portion of installing on the car body framework of expression back buffer parts; Figure 17 is the 17-17 line cutaway view of Figure 16; Figure 18 is the 18-18 line cutaway view of Figure 17; Figure 19 is the lateral plan of subframe; Figure 20 be Figure 19 20 to view; Figure 21 be Fig. 1 21 to view; Figure 22 is the 22-22 line cutaway view of Figure 21; Figure 23 is the 23-23 line cutaway view of Figure 22; Figure 24 is the instruction diagram of a pipe with respect to the offset of the line of centers of rear portion vehicle frame, (a) is the lateral plan of main car frame; (b) B that is (a) is to view.

At first, as shown in Figure 1, the car body frame F of small size motorcycle is to be made of main car frame 21 and the subframe 22 that is attached on the rear portion of this main car frame 21, main car frame 21 is that the rearward end that the leading section with the rear portion vehicle frame 24 of cast forms such as aluminum alloy is attached at the front frame 23 of cast forms such as aluminum alloy is formed, and is connecting above-mentioned subframe 22 on the rearward end of rear portion vehicle frame 24.Promptly, the car body frame F forms by in turn link front frame 23, rear portion vehicle frame 24 and subframe 22 from front side.

With reference to Fig. 1～Fig. 2, but be located at the front fork 28 that is supporting to steering on the head pipe 25 of front end of front frame 23 across front-wheel WF.The lower end of above-mentioned front fork 28 is configured in the place ahead of the axletree 31 of front-wheel WF, the other end and above-mentioned axletree 31 that one end is connected the connecting rod 29 on the lower end of front fork 28 link, and are provided with anterior bumper 30 between the pars intermedia of the pars intermedia of the above-below direction of front fork 28 and connecting rod 29.In addition, linking steering handle 32 in the upper end of front fork 28.

With reference to Fig. 3 and Fig. 4, power part P is made of with the stepless speed changer M that is configured in trailing wheel WR left side the driving engine E of the front side that is configured in trailing wheel WR, and this power part P can be bearing in the fore-and-aft direction pars intermedia of rear portion vehicle frame 24 with fluctuating.Driving engine E for example is water cooling type single cylinder 4 two-stroke engines that cylinder is essentially horizontally disposed towards ground, car body the place ahead.Stepless speed changer for example is a belt type adjustable speed drive.

Rear axle at power part P is supporting trailing wheel WR, at the rear portion of the rear portion of power part P and main car frame 23, be to be provided with back buffer parts 33 between the rear portion vehicle frame 24.The airfilter 34 of the side, top that is configured in trailing wheel WR is installed at the rear portion of power part P, and this airfilter 34 is connected with driving engine E by gasifier 35.Guiding extends to right side side's side of trailing wheel WR from the freeing pipe 36 of the exhaust of driving engine E from driving engine E, and this freeing pipe 36 is connected with the exhaust muffler 37 of the right side side that is configured in trailing wheel WR.Rotatably support support 38 on driving engine E, and radiator 44 is configured in the right side side of power part P.

With reference to Fig. 5～Fig. 7, front vehicle frame 23 has head pipe 25, decline framework 26, pair of right and left bearing plate framework 27 integratedly ₁, 27 ₂, and by cast form.Above-mentioned decline framework 26 extends to the back lower place from above-mentioned head pipe 25; Above-mentioned bearing plate framework 27 ₁, 27 ₂Rearward extend from the lower end of decline framework 26.

As shown in Figure 8, decline framework 26 forms the open groove shape in the place ahead and below, configuration and the interior a plurality of reinforced rib 26a of groove ... be located at integratedly on the decline framework 26.

Pair of right and left bearing plate framework 27 ₁, 27 ₂Form the open flute profile in top respectively, also extend point-blank.Two bearing plate frameworks 27 ₁, 27 ₂Leading section be disposed at the both sides, lower end of decline framework 26, above-mentioned two bearing plate structural portion 27 respectively ₁, 27 ₂The pair of curved portion 50 that more forwards bloats by front, lower end of leading section than decline framework 26 ₁, 50 ₂Connect the both sides, lower end that are arranged on decline structural portion 26 respectively.Two curves 50 ₁, 50 ₂Also form the open flute profile in top, at two curves 50 ₁, 50 ₂Mutual opposed inside portion be provided with the recess 51 of recessed outside side side respectively.

In Fig. 9, at two bearing plate frameworks 27 ₁, 27 ₂On be provided with the reinforced

rib

52,52 that extends along fore-and-aft direction respectively integratedly.At two bearing plate frameworks 27 ₁, 27 ₂The bottom be respectively equipped with a pair of

drain gutter

53,53, this a pair of

drain gutter

53,53 is configured in the both sides of above-mentioned reinforced rib 52, is used for discharging being immersed in bearing plate structural portion 27 ₁, 27 ₂Interior water.And, at curve 50 ₁, 50 ₂The bottom also be respectively equipped with drain gutter 54.

Two bearing plate frameworks 27 ₁, 27 ₂Rearward end between reciprocally connect as one by deep framing 55, this deep framing 55 forms the basic U word shape that the top has been opened.

At two bearing plate frameworks 27 ₁, 27 ₂Rearward end be provided with integratedly to the anterior coupling plate 56 of front lower place bevelled ₁, 56 ₂, at two anterior coupling plates 56 ₁, 56 ₂On respectively be provided with pair of bolts clearance hole 57,57.As shown in figure 10, at the anterior coupling plate 56 of a side ₁On, being provided with the chimeric recess 58 of mono-of opening on below the pars intermedia between its two

bolts clearance hole

57,57, this chimeric recess 58 has and bolt clearance hole 57 ... parallel axis; At another anterior coupling plate 56 ₂On, being provided with the

chimeric recess

58,58 of pair of openings on below the pars intermedia of 57,57 of its two bolts clearance holes, this a pair of

chimeric recess

58,58 has and bolt clearance hole 57 ... parallel axis.

With reference to Figure 11, Figure 12, rear portion vehicle frame 24 has main part of vehicle frame 24a integratedly and strengthens the vehicle frame 24b of portion, this main part of vehicle frame 24a from above form the spacious roughly U word shape of opening in the place ahead when seeing, this reinforcement vehicle frame 24b of portion connects between the pars intermedia both sides of above-mentioned main part of vehicle frame 24a, and this rear portion vehicle frame 24 is basically to back upper place cast form obliquely.

The both sides front end of main part of vehicle frame 24a in this rear portion vehicle frame 24 is provided with respectively integratedly to front lower place slanting back coupling plate 61 ₁, 61 ₂, be used for from the anterior coupling plate 56 of the rear end of below and above-mentioned front frame 23 ₁, 56 ₂Overlap.

At two rear portion coupling plates 61 ₁, 61 ₂On respectively be provided with pair of

bolts clearance hole

62,62, this

bolt clearance hole

62,62 respectively with the preceding coupling plate 56 that is located at front frame 23 ₁, 56 ₂On

bolt clearance hole

57,57 corresponding.As shown in figure 13, at a side rear portion coupling plate 61 ₁On be equipped with the chimeric teat 63 of mono-, this chimeric teat 63 has and bolt clearance hole 62 ... the axis of parallel axes and outstanding upward above the pars intermedia of 62,62 of two bolt clearance holes, be used for and be located at anterior coupling plate 56 ₁On chimeric recess 58 chimeric, at another rear portion coupling plate 61 ₂On be equipped with a pair of

chimeric teat

63,63, this a pair of

chimeric teat

63,63 has and bolt clearance hole 62 ... the axis of parallel axes and outstanding upward above 62,62 of two bolt clearance holes, be used for and be located at anterior coupling plate 56 ₂On

chimeric recess

58,58 chimeric.

Anterior coupling plate 56 ₁, 56 ₂With overlap coupling plate 56 forwardly from the below ₁, 56 ₂On rear portion coupling plate 61 ₁, 61 ₂By at the

bolt

64,64 that interts in each

bolt clearance hole

57,62 ... last spiral attaching nut 65,65 ... and interconnected.And, forwardly reach rear portion coupling plate 56 ₁, 56 ₂, 61 ₁, 61 ₂Coupled condition under, each chimeric teat 63 ... be embedded in each chimeric recess 58 respectively ... in, at bearing plate framework 27 ₁, 27 ₂The rear end and a plurality of positions more than 3 of the connecting portion of the front end of rear portion vehicle frame 24, be 3 positions in the present embodiment, each chimeric teat 63 ... be embedded in each chimeric recess 58 ... in.

As shown in Figure 1, connect anterior coupling plate 56 respectively ₁With rear portion coupling plate 61 ₁, anterior coupling plate 56 ₂With rear portion coupling plate 61 ₂Each a plurality of (they being a pair of in the present embodiment) but

bolt

64,64 at least one axis extended line L, be between the axletree 31 handled by travel direction of extended line L, the L of the axis of a pair of

bolt

64,64 in the present embodiment with the upper end of the steering handles 32 of head pipe 25 supportings and front-wheel WF.Chimeric mosaic process 63 mutually ... and chimeric recess 58 ... be configured in 64,64 of pair of bolts, because it has and bolt 64 ... parallel axis, so, chimeric teat 63 ... and chimeric recess 58 ... axis extended line also between the axletree 31 of the upper end by steering handle 32 and front-wheel WF.

Yet the driving engine E of power part P illustrates the structure of this vibrationproof connecting rod 66 by on the rear portion vehicle frame 24 in the vibrationproof connecting rod 66 supporting body frame F with reference to Figure 14, Figure 15.

Vibrationproof connecting rod 66 has: the driving engine lateral bracket 67 of pair of right and left ₁, 67 ₂Pair of right and left connecting rod 68 ₁, 68 ₂Crossbeam 69; A pair of backstop Rubber Parts 70,71.Above-mentioned driving engine lateral bracket 67 ₁, 67 ₂Be located on the driving engine E; Above-mentioned connecting rod 68 ₁, 68 ₂The one end can joltily be connected each driving engine lateral bracket 67 ₁, 67 ₂On, its other end can joltily be connected on the main part of vehicle frame 24a of rear portion vehicle frame 24, this connecting rod 68 ₁, 68 ₂Be configured in the place ahead of gasifier 35; Above-mentioned crossbeam 69 connects two connecting rods 68 ₁, 68 ₂Between; Be located at a side above-mentioned connecting rod 68 the 24b of deep framing portion butt in above-mentioned a pair of

backstop Rubber Parts

70,71 and the rear portion vehicle frame 24 ₁On.

Driving engine lateral bracket 67 ₁, 67 ₂Be located at highlightedly upward on the driving engine E, at these driving engine lateral brackets 67 ₁, 67 ₂On be provided with mounting hole 72,72 coaxially, in each mounting hole 72,72, be pressed into rubber bush 73,73, between two rubber bushs 73,73, clamping tubular distance piece 74 cylindraceous.In two rubber bushs 73,73 and spacer sleeve 74, be installed with to have and be combined in side's connecting rod 68 ₁Lateral surface on the bolt 75 of head 75a.At connecting rod 68 from the opposing party ₂Spiral is cooperating the connecting rod 68 that is incorporated into the opposing party on the protrusion of outstanding above-mentioned bolt 75 ₂Lateral surface on nut 84.Promptly, be connected in two connecting rods 68 ₁, 68 ₂An end on and the bolt 75 of horizontal arrangement is supported on driving engine lateral bracket 67 by rubber bush 73,73 ₁, 67 ₂On.

Pars intermedia both sides in the main part of vehicle frame 24a of rear portion vehicle frame 24 are provided with

support holes

76,76 coaxially, are pressed into

rubber bush

77,77 in each support holes 76,76.Be located at two connecting rods 68 ₁, 68 ₂The other end and the

bolt

78,78 parallel with above-mentioned bolt 75 can joltily be supported on the above-mentioned main part of vehicle frame 24a by above-mentioned

rubber bush

77,77.

Connecting rod 68 a side ₁In, being provided with the rubber bearing portion 79 of case shape in the place ahead of the straight line of the axis of binder bolt 75 and bolt 78, the bearing surface 81 that connects with the backstop glue spare 70 that is installed in this rubber bearing portion 79 was formed on deep framing portion 24 in the rear portion vehicle frame 24 following.In addition, at above-mentioned connecting rod 68 ₁In, being provided with the rubber bearing portion 80 of case shape at the rear side of the straight line of the axis of binder bolt 75 and bolt 78, the bearing surface 82 that connects with the backstop Rubber Parts 71 that is installed in this rubber bearing portion 80 was formed on the above-mentioned deep framing 24b of portion following.

Connect two connecting rods 68 ₁, 68 ₂Crossbeam 69 form the basic U word shape that the below is opened wide, and across being configured in two connecting rods 68 ₁The above-mentioned gasifier 35 of connection of rear side and getter 83 ground between the driving engine E be configured.

In such vibrationproof connecting rod 66, the load that acts on the bolt 75 from the driving engine E of power part P is absorbed by the elastic deformation of Rubber Parts 73,73, and by

rubber bush

70,71 pushing bearing

surfaces

81,82 elastic deformation and be absorbed, the elastic deformation by

rubber bush

77,77 absorbs again.

The upper end of back buffer parts 33 is installed at the rear portion of the main car frame 21 of car body member F, the bottom of this buffer unit 33 is connected on the power part P, and the installation constitution that install on main car frame 21 upper end of its back buffer parts 33 is described with reference to Figure 16～Figure 18.

Be provided with the buffer piece side carriage 86 of basic U font open above forming in the upper end of back buffer parts 33.On the other hand, as the rear portion of main car frame 21, be in the rear portion of main part of vehicle frame 24a of main portion of rear portion vehicle frame 24, with back buffer parts 33 cooresponding parts on be provided with for above-mentioned buffer piece side carriage 86 and insert logical peristomes 87.

In addition, be provided with damper element installation portion 88 integratedly on above-mentioned main part of vehicle frame 24a, this installation portion 88 is crossed over above-mentioned peristome 87 ground to the top of main part of vehicle frame 24a protuberance, and above-mentioned buffer piece side carriage 86 clips damper element installation portion 88 ground and is configured.

Be pressed into rubber bush 90 in the mounting hole 89 on being located at damper element installation portion 88, bolt 91 spirals of this rubber bush 90 of break-through are installed on the buffer piece side carriage 86.Promptly, buffer piece side carriage 86 is installed on the damper element installation portion 88 by rubber bush 90.

In Figure 19 and Figure 20, subframe 22 is processing metal pipes and constituting, and it has: see the frame portion 92 that forms the basic U word shape that opens wide in the place ahead from the top; Extend and pars intermedia be welded in a pair of rising

portions

93,93 of the front end of frame portion 92 up and down; One end is welded on the lower end of rising

portions

93,93 and the other end is welded in a pair of

rib

94,94 in the frame portion 92.The line of centers left-right symmetric that subframe 22 extends about the fore-and-aft direction along car body member 21.

The bottom of each rising portions 93,93 and with an end of the overlapping rib 94,94 in the bottom of above-mentioned rising portions 93,93 on be provided with bolt insertion hole 97 ..., be provided with bolt insertion hole 98 at the pars intermedia of each rib 94,94 ...On the other hand, on the main part of vehicle frame 24a of rear portion vehicle frame 24 from main part of vehicle frame 24a upward swell be provided with a pair of hub portion 99,99 and a pair of hub portion 100,100 integratedly, these a pair of hub portion 99,99 and two bolt insertion holes 97 ... correspondence, these a pair of hub portion 100,100 and two bolt insertion holes 98 ... corresponding.By bolt 101 ... and nut 102 ... subframe 22 is installed on above-mentioned each wheel hub 99,99,100,100.The hub portion 99,100 that is configured in the left side of main part of vehicle frame 24a is configured in and being provided with on the cooresponding position of portion to being connected the connection that is provided with on the main part of vehicle frame 24a of damper element installation portion 88, and subframe 22 is attached on the main part of vehicle frame 24a with the connection to being connected setting on the main part of vehicle frame 24a of damper element installation portion 88 the cooresponding position of being set.

On rear portion vehicle frame 24 and subframe 22, can accommodate safety cap accommodate case 39 be configured in above-mentioned driving engine E and gasifier 35 the top be supported.

As shown in figure 15, be provided with outstanding a pair of shank 105,106 highlightedly downwards in the lower end on the front of accommodating case 39.On the other hand, be provided with supporting recess 107,108 on the 24b of deep framing portion of rear portion vehicle frame 24, this supporting recess 107,108 is used to bear above-mentioned each shank 105,106.Be linked on the 24b of tension member portion of rear portion vehicle frame 24 with shank 105,106 usefulness bolts 109,109 and the nut 110,110 of supporting recess 107,108 to bear.For fear of be disposed at the 24b of tension member portion and accommodate the aspirate tube 83 of below of bottom 39 of case 39 and gasifier 35 produces and interferes, the bottom of 24b of tension member portion and containing box 39 has a down dip to the right at the state towards direction of travel the place ahead of small size motorcycle and tiltedly is formed.

In addition, at two rising portions 93 of subframe 22 ... the upper end be respectively equipped with smooth installation board 111, at each board 111 is installed ... welding nut 112 respectively.At these board 111 is installed ... the rear end of case 39 is accommodated in last carrying, distinguishes spinning at nut 112 by fastening installation ... in bolt 113 ... (with reference to Fig. 1) and the rear end that will accommodate case 39 are installed on the subframe 22.

Like this, accommodate case 39 and be supported in above driving engine E and the gasifier 35 on rear portion vehicle frame 24 and the subframe 22, the crossbeam 69 of above-mentioned vibrationproof connecting rod 66 is configured in accommodates between case 39 and the driving engine E.

At the rear side of accommodating case 39, Fuel Tank 40 at above-mentioned subframe 22 upper supports.For supporting fuel case 40, on the rear end of the frame portion 92 of subframe 22, welding adapter plate 114, at the pars intermedia both sides of frame portion 92 welded and installed plate 115,115.On above-mentioned adapter plate 114, welding a pair of nut 116,116, difference welded nut 117 on above-mentioned adapter plate 115,115.Be configured in the rear portion bolt 118 that cooperates with two nuts, 116,116 spirals respectively of the Fuel Tank 40 in the frame portion 92 ... (with reference to Fig. 1,2) is supported on the above-mentioned adapter plate 114, in addition, the both sides of Fuel Tank 40 with respectively with above-mentioned each nut 117 ... the bolt 119 that spiral cooperates ... (with reference to Fig. 1, Fig. 2) is supported on the above-mentioned adapter plate 115,115.

Car body member F is covered with plastic car body cover 41, and this car body cover 41 has legging cover 41a, pedal bottom plate 41b, covers 41c, side cover 41d down; Above-mentioned legging cover 41a is covered with the place ahead of driver's leg, and above-mentioned pedal bottom plate 41b is used for mounting driver's pin, and the above-mentioned 41c of cover down is covered with the below of pedal bottom plate 41b, and above-mentioned side cover 41d is from covering body rear portion, both sides.

The above-mentioned side cover of the Fuel Tank 40 usefulness 41d that is supported on the major part of accommodating case 39 on rear portion vehicle frame 24 and the subframe 22 and is supported on the subframe 22 is covered with, from can cover the top that the vehicle seat 42 of accommodating case 39 can be installed in side cover 41d with opening and closing.In addition, the fuel that had of the Fuel Tank 40 lid 40a that injects usefulness is being configured upward highlightedly from the top of upside cover 41d.

Especially as shown in Figure 2, one is provided with adapter plate 45 integratedly at the back side of head pipe 25, these adapter plate 45 compartment of terrains are relative with the back side of above-mentioned head pipe 25, on this adapter plate 45 from above chimeric nut support member 46, this nut support member 46 forms the open basic U word shape in below.And, on nut support member 46, welding the nut 47 of 45 of the back side that is configured in head pipe 25 and adapter plates.On the other hand, be used for connecting in conjunction with the above-mentioned installation board 45 relative parts of the hook spare 48 of shopping bag etc. and the spats cover 41a of car body cover 41, the bolt component 49 that break-through combines with hook spare 48 in hook spare 48, legging cover 41a, nut support member 46 and adapter plate 45 cooperates with above-mentioned nut 47 spirals.

In Figure 21～Figure 23, at two bearing plate frameworks 27 of above-mentioned front frame 23 ₁, 27 ₂Between setting up a pair of bearing plate plate 121,122 along the fore-and-aft direction compartment of terrain.

At two bearing plate frameworks 27 ₁, 27 ₂The part near anterior be provided with bolt insertion hole 123,123, roughly the nut support member 125,125 of U word shape is embedded in each bearing plate framework 27 from the side ₁, 27 ₂On, welding on this nut support member 125,125 and above-mentioned bolt insertion hole 123,123 corresponding nuts 124,124.The both sides of the length direction both ends of cover supporting member 126,126, bearing plate plate 121 and pedal bottom plate 41b under mounting on each nut support member 125,125 near the front portion.Pedal bottom plate 41b, bearing plate plate 121 and down cover support member 126,126 by with bolt 127,127 spirals in above-mentioned nut 125,125 and be anchored on bearing plate framework 27 jointly ₁, 27 ₂On.On pedal bottom plate 41b, be provided with the recess 128,128 of the head of accommodating each bolt 127,127, protrude in the top with the head of avoiding bolt 127,127.

Length direction central portion at bearing plate plate 121 is provided with the protrusion 121a of protuberance upward, and the front end central authorities of pedal bottom plate 41b are supporting with bottom and the above-mentioned protrusion 121a of spats cover 41a.

Be and above-mentioned bearing plate plate 121 identical construction to be fastenedly connected at bearing plate framework 27 with pedal bottom plate 41b with bearing plate plate 121 by bolt 129,129 from the both ends of the length direction of the bearing plate plate 122 of below supporting pedal bottom plate 41b ₁, 27 ₂On.On pedal bottom plate 41b, be provided with the recess 130,130 of the head of accommodating bolt 129,129.At bearing plate framework 27 ₁, 27 ₂The part at close rear portion be provided with the bolt insertion hole 140,140 that is used for break-through bolt 129,129.

Cover 41c down and be covered with two bearing plate structural portion 27 front frame 23 from the below ₁, 27 ₂ Be configured.By bolt 131 ... and nut 132 ... be attached at down on the cover supporting member 126,126.

At above-mentioned two bearing plate frameworks 27 ₁, 27 ₂Between disposing the open box-shaped article receiving portion 133 in top.Be provided with the 133a of support flanges portion, the 133b that stretches out to both sides integratedly in the both sides, upper end of thing resettlement section 133, the recess 134,135 of outer end that is located at the 133a of these support flanges portions, 133b is by two bearing plate frameworks 27 ₁, 27 ₂The inside portion upper limb bear.

In addition, the 133c of support flanges portion on the upper-end front of thing resettlement section 133 is provided with above the bottom that is carried on decline framework 26 integratedly, support flanges 133c leads in above-mentioned support bead 133c and inserts the bolt 135 that leads in the bolt insertion hole 134 of the bottom that is located at above-mentioned decline framework 26 and bottom that the nut 136 of spiral on this bolt 135 is anchored on decline framework 26 by inserting.

Be provided with supporting teat 133d on the Width central portion that is carried on tension member portion 55 integratedly in the rear end lower of article receiving portion 133, the 133d of support flanges portion leads in the 133d of support flanges portion and inserts the bolt 138 that leads in the bolt insertion hole 137 of the Width central portion that is located at above-mentioned deep framing 55 and Width central portion that the nut 139 of spiral on this bolt 138 is anchored on deep framing 55 by inserting.

Accommodating battery 143 on the part on the front in article receiving portion 133.By on the hook 144,145 that combines with article receiving portion 133 in front and back at this battery 143 in conjunction with hanging over the two ends of the belt 146 on the battery 143, battery 143 fixed configurations are in article receiving portion 143.

At the rear of above-mentioned battery 143,133 internal fixation are disposing radiator water storage tank 147 in article receiving portion.

With article receiving portion 133 cooresponding positions, central portion at pedal bottom plate 41b is provided with peristome 148, these peristome 148 usefulness can sealed by the lid 149 that bolt component 150 is linked on the pedal bottom plate 41b with opening and closing, under closed state, be on the one side above the top and pedal bottom plate 41b of lid 149.

Below, the effect of this embodiment is described,

The car body frame F of this small size motorcycle is to link front frame 23, rear portion vehicle frame 24 and subframe 22 mutually to form.In each

vehicle frame

23,24,22 at least one, front frame 23 and rear portion vehicle frame 24 are cast form in the present embodiment.Therefore by the front frame 23 of cast form and any one part that is common to by change car body framework of rear portion vehicle frame 24 are made the two-wheeled of the different multimachine kind of machine, can realize the design of the car body framework that the machine change is brought, the reduction of manufacturing expense.And, can carry out the assembling of the part of each

member

23,24,22 earlier by making each

framework

23,24,23 modularization, can be assembled into the assembling of coming together to carry out small motorcycle type motorbicycle mutually by 3 patterns after assembling is finished, therefore, can help to improve the assembling operation efficient of small size motorcycle.

In addition, because front frame 23 has head pipe 25, decline framework 26 and bearing plate framework 27 integratedly ₁, 27 ₂, and by cast form, the rear portion vehicle frame 24 of cast form is linked to above-mentioned bearing plate framework 27 ₁, 27 ₂The rear end, the subframe 22 that the processing metal pipe forms is linked to the rear end of rear portion vehicle frame 24, so, for not spending many designs, the subframe 22 of manufacturing expense, can be with the handling ease ground reply machine change of metal tubulation.

The pair of right and left bearing plate member 27 of vehicle frame 23 forwardly ₁, 27 ₂When linking, be to be located at bearing plate framework 27 with rear portion vehicle frame 24 ₁, 27 ₂The anterior coupling plate 56 of rear end ₁, 56 ₂Last front end and the anterior coupling plate 56 that is located at back vehicle frame 24 that links ₁, 56 ₂The rear portion coupling plate 61 that overlaps ₁, 61 ₂, anterior coupling plate 56 ₁, 56 ₂With rear portion coupling plate 61 ₁, 61 ₂All the front lower place, back tilts shown in Figure 24 (a), therefore, shown in Figure 24 (b), head pipe 25 and above-mentioned joint face to two coupling plates 56 ₁, 56 ₂, 61 ₁, 61 ₂The multiview drawing on the parallel plane of joint face on, coupling plate 56 ₁, 56 ₂, 61 ₁, 61 ₂Joint face be configured in the positions more approaching with head pipe 25.Therefore, shown in Figure 24 (b), even produce the rear portion coupling plate 61 of rear portion vehicle frame 24 sides ₁, 61 ₂Anterior coupling plate 56 to front frame 23 ₁, 56 ₂Assembly error, the Width line of centers C of relative rear portion, the position vehicle frame 24 of head pipe 25 has produced skew obliquely, also can be with the displacement δ with respect to the position of the head pipe 25 of the Width line of centers C of rear portion framework 24 ₁, δ ₂Suppress for smaller, can improve the precision of front-wheel WF and trailing wheel WR with respect to the contraposition of car body.

In addition, by connecting anterior coupling plate 56 respectively ₁With rear portion coupling plate 61 ₁, anterior coupling plate 56 ₂With rear portion coupling plate 61 ₂Each pair of

bolts

64,64 at least 1 axis extended line L, be the extended line L of the axis of pair of

bolts

64,64 in the present embodiment ₁, L ₂By with setting between the axletree 31 of the upper end of the steering handles 32 of head pipe 25 supportings and front-wheel WF, above-mentioned joint face be disposed at the approaching position of head pipe 25 on, even produced rear portion vehicle frame 24 to front frame 23 stack-mounted assembly errors, also can be with displacement δ with respect to the position of the head pipe 25 of the Width line of centers C of rear portion vehicle frame 24 ₁, δ ₂Suppress forr a short time.

Relative therewith, shown in Figure 25 (a), if supposing the joint face of the front end of the rear end of front frame 23 and rear portion vehicle frame 24 is not to tilt but the situation of basic horizontal to the front lower place, head pipe 25 and above-mentioned joint face on the multiview drawing of the plane projection parallel with the joint face of the front end of the rear end of front frame 23 and rear portion vehicle frame 24, shown in Figure 25 (b), above-mentioned joint face is configured in distant on the position of head pipe 25, when having produced rear portion vehicle frame 24, with respect to the displacement δ of the position of the head pipe 25 of the Width line of centers C of rear portion vehicle frame 24 toward anterior vehicle frame 23 stack-mounted assembly errors ₁, δ ₂Bigger.

In addition, because rear portion coupling plate 61 ₁, 61 ₂Coincide with anterior coupling plate 56 from the below ₁, 56 ₂On, do not need to guarantee rear portion vehicle frame 24 is disposed at bearing plate framework 27 ₁, 27 ₂The space of rear end top.Therefore, pedal bottom plate 41b can be configured in bearing plate framework 27 ₁, 27 ₂Rear end top, can the earth set the space of stretcher 41b.

Because chimeric recess 58 ... be located at bearing plate framework 27 ₁, 27 ₂The rear end, be embedded in above-mentioned chimeric recess 58 ... in chimeric teat 63 ... be based on the front end of back member 24, thereby can improve mutual binding, the assembly precision when assembling front frame 23 and rear portion vehicle frame 24.

And, by with chimeric recess 58 ... and chimeric teat 63 ... be configured in bearing plate framework 27 ₁, 27 ₂The above a plurality of positions in rear end and 3 positions of the connecting portion of the front end of rear portion vehicle frame 24, be 3 positions in this embodiment, can further improve the assembly precision of front frame 23 and rear portion vehicle frame 24.

Forwardly in the vehicle frame 23, because decline framework 26 forms the open flute profile in below, thereby the section form ground that can reduce decline framework 26 closely disposes front-wheel WF with decline framework 26, in the time of the space that can avoid the interference of front-wheel WF and decline framework 26 and fully guarantee pedal bottom plate 41b, also can shorten wheel base.

In addition, because the bearing plate framework 27 of pair of right and left ₁, 27 ₂Form the open groove shape in top respectively, owing to act on the effect of the external force on the car body frame F, bearing plate framework 27 ₁, 27 ₂Its upper opening area produces deflection with changing, can improve travelling comfort thus.

And, in bearing plate portion 27 ₁, 27 ₂On be respectively equipped with the reinforced rib 52 that extends along fore-and-aft direction, thereby two bearing plate members 27 ₁, 27 ₂Owing to when the effect of external force can produce deflection, also can prevent two bearing plate members 27 ₁, 27 ₂Rigidity reduce terrifically.

Have again, because bearing plate member 27 ₁, 27 ₂Leading section be configured in the both sides, lower end of decline framework 26 respectively, thereby pedal bottom plate 41b can be configured to the both sides, lower end of decline framework 26, can be under the situation that does not strengthen wheel base the side space of guaranteeing pedal bottom plate 41b forwardly fully.

Because bearing plate framework 27 ₁, 27 ₂The pair of curved portion 50 that more forwards bloats by front, lower end of leading section than decline framework 26 ₁, 50 ₂Connection is arranged on the both sides, lower end of decline framework 26 respectively, although dispose a pair of bearing plate framework 27 of linearity respectively ₁, 27 ₂Leading section, but by with decline framework 26 and two bearing plate frameworks 27 ₁, 27 ₂Connection portion, i.e. two curves 50 are set ₁, 50 ₂Forwards bloat, can improve the intensity that above-mentioned connection is provided with portion fully.

Again it, by with being located at two curves 50 respectively ₁, 50 ₂The recess 51 of mutual opposed inside portion ... guarantee the interval with front-wheel WF, thus can be with front-wheel WF and curve 50 ₁, 50 ₂The side joint near-earth is provided with, therefore, and by with two bearing plate frameworks 27 ₁, 27 ₂Leading section by curve 50 ₁, 50 ₂Connection is arranged on the decline framework 26, can avoid wheel base to become big.

In the driving engine E with dynamic component P can joltily be bearing in vibrationproof connecting rod 66 on the car body frame F, connection can joltily link the pair of right and left driving engine lateral bracket 67 that is located on the driving engine E ₁, 67 ₂Pair of right and left connecting rod 68 with the car body frame F ₁, 68 ₂Between crossbeam 69 form the open basic U word shape in below, and be disposed at two connecting rods 68 ₁, 68 ₂Front side cross over to connect and to be configured in two connecting rods 68 ₁, 68 ₂The gasifier 35 of rear side and the position of the aspirate tube 83 between the driving engine E.Therefore, be configured in two connecting rods 68 with gasifier 35 ₁, 68 ₂The situation of front side compare, the degree of freedom in the configuration of gasifier 35 uprises.

Driving engine E is 4 two-stroke engines of basic horizontal configuration, be installed in accommodating on the car body frame F by the below that is vehicle seat 42 and dispose crossbeam 69 between case 39 and the driving engine E, when guaranteeing freely moving of crossbeam 69, can prevent that also the position at seat 42 from uprising by the interference of avoiding and accommodate case 39.

Have again, owing on main part of vehicle frame 24a, be provided with peristome 87 as the main portion at the rear portion of the main car frame in the car body frame F 21, this peristome 87 is inserted logical for the buffer piece side carriage that the upper end had 86 of back buffer parts 33, the damper element installation portion 88 that leap peristome 87 ground swells arise from main part of vehicle frame 24a top is located on the main part of vehicle frame 24a, buffer piece side carriage 86 is installed on the damper element installation portion 88, so, buffer piece side carriage 86 can be set on the higher position, can further strengthen the stroke of back buffer parts 33, improve driver's travelling comfort.

Since the subframe 22 that constitutes the car body frame F collaboratively with main car frame 21 with being connected the connection that is provided with to main part of vehicle frame 24a cooresponding position of portion and main car frame 21 bindings is set of damper element installation portion 88, so, can strengthen from the intensity of the damper element installation portion 88 of main part of vehicle frame 24 protuberances with subframe 22.

As additional embodiments of the present invention, also can be with the anterior coupling plate 56 of the rear end of bolted connection front frame 23 with the axis that extends along the Width of car body frame F ₁, 56 ₂With the front end that is located at rear portion vehicle frame 24 and anterior connecting part plate 56 ₁, 56 ₂The rear portion coupling plate 61 that overlaps ₁, 61 ₂

In this case, by with anterior coupling plate 56 ₁, 56 ₂The chimeric recess 58 of side ... and and each chimeric recess 58 ... chimeric rear portion coupling plate 61 ₁, 61 ₂The chimeric teat 63 of side ... the extended line of axis set by steering handle 32 the upper end and the axletree 31 of front-wheel WF between, the position deviation that can further dwindle head pipe 25 with respect to the Width line of centers C of rear portion vehicle frame 24.

More than, embodiments of the invention have been described in detail in detail, but the present invention is not limited to the foregoing description, can not break away from the present invention ground that is recorded in the Patent right requirement and carry out all design modifications.

For example, in the above-described embodiments, be illustrated, but the present invention is also applicable to the situation with synthetic resin contour forming front frame 23 and rear portion vehicle frame 24 for front frame 23 and rear portion vehicle frame 24 situation by cast form.In addition in the above-described embodiments, coupling plate 56 forwardly ₁, 56 ₂Be provided with chimeric recess 58, at rear portion coupling plate 61 ₁, 61 ₂Be provided with chimeric teat 63, but also chimeric teat 63 can be located at anterior coupling plate 56 ₁, 56 ₂On, chimeric recess 58 is located at rear portion coupling plate 61 ₁, 61 ₂On.

As mentioned above, according to the 1st invention, producing the group of rear portion vehicle frame to front frame During the dress error, can be with the position deviation of head tube with respect to the width direction center line of rear portion vehicle frame Suppress for smaller.

According to the 2nd invention, when having produced the rear portion vehicle frame to the assembly error of front frame, Head tube can be suppressed for more with respect to the position deviation of the width direction center line of rear portion vehicle frame Little.

According to the 3rd invention, when having produced the rear portion vehicle frame to the assembly error of anterior frame, can The position deviation of the width direction center line of the relative rear portion of head tube vehicle frame is suppressed for littler, and And, can improve the assembling essence when interconnecting front frame and rear portion vehicle frame assembling body frame Degree.

According to the 4th invention, can be configured on the rear end of bearing plate framework riding base plate The side can set the space of riding base plate by the earth.

According to the 5th invention, can further improve the assembling essence of front frame and rear portion vehicle frame Degree.

Claims

1. car body frame of small-sized motorcycle type vehicle, this small size motorcycle comprises front frame (23) and rear portion vehicle frame (24), this front frame (23) but by contour forming and have the head pipe (25) of steering twelve Earthly Branches brought forward wheel (WF) at its front end, this rear portion vehicle frame (24) is the shape of extending to the back upper place by contour forming and links with the rear end of front frame (23), it is characterized in that forwardly coupling plate (56 ₁, 56 ₂) on connecting rear portion coupling plate (61 ₁, 61 ₂), this front portion coupling plate (56 ₁, 56 ₂) be located at the rear end of above-mentioned front frame (23) and tilt this rear portion coupling plate (61 to the front lower place ₁, 61 ₂) be located at the front end of above-mentioned rear portion vehicle frame (24) and tilt and coincide with above-mentioned anterior car knot plate (56 to the front lower place ₁, 56 ₂) on.

2. car body frame of small-sized motorcycle type vehicle as claimed in claim 1 is characterized in that, links anterior coupling plate (56 ₁, 56 ₂) and rear portion coupling plate (61 ₁, 61 ₂) the extended line (L) of at least 1 axis of a plurality of bolts (64) be set between the axletree (31) of upper end by steering handle (32) and front-wheel (WF), above-mentioned steering handle (32) can carry out the steering operation and supported by above-mentioned head pipe (25).

3. car body frame of small-sized motorcycle type vehicle as claimed in claim 1 is characterized in that, at above-mentioned anterior coupling plate (56 ₁, 56 ₂) and above-mentioned rear portion coupling plate (61 ₁, 61 ₂) a side on be provided with chimeric teat (63) highlightedly, the chimeric recess (58) of chimeric this chimeric teat (63) is located at above-mentioned anterior coupling plate (56 ₁, 56 ₂) and above-mentioned rear portion coupling plate (61 ₁, 61 ₂) the opposing party on, between the upper end and the wheel (31) of front-wheel (WF) of the extended line of the axis of above-mentioned chimeric teat (63) and above-mentioned chimeric recess (58) by steering handle (32), this steering handle (32) can carry out the direction of operating operation and supported by above-mentioned head pipe (25).

4. as each described car body frame of small-sized motorcycle type vehicle in the claim 1～3, it is characterized in that above-mentioned front frame (23) has head pipe (25) integratedly, rearward extends and be configured in the bearing plate framework (27 of the below of pedal bottom plate (41b) from this head pipe (25) to the decline framework (26) of back lower place extension, from the lower end of this decline framework (26) ₁, 27 ₂), above-mentioned rear portion coupling plate (61 ₁, 61 ₂) coincide with above-mentioned anterior coupling plate (56 from the below ₁, 56 ₂) on, this front portion coupling plate (56 ₁, 56 ₂) be located at bearing plate framework (27 ₁, 27 ₂) the rear end.

5. car body frame of small-sized motorcycle type vehicle as claimed in claim 3 is characterized in that, at the anterior coupling plate (56 that is located at the pair of right and left on the above-mentioned front frame (23) ₁, 56 ₂) and the rear portion that is located at the pair of right and left on the above-mentioned rear portion vehicle frame (24) link board (61 ₁, 61 ₂) connecting portion integral body in, above-mentioned chimeric teat (63) and above-mentioned chimeric recess (58) are disposed at above a plurality of positions, 3 positions.