The specific embodiment
Below, explanation is applicable to that cross-country is a two-wheeled embodiment with reference to the accompanying drawings.Fig. 1-Fig. 9 illustrates embodiment, Fig. 1 is all lateral plans of vehicle body, Fig. 2 is its back view, Fig. 3 wants the enlarged side view of portion for vehicle frame, and Fig. 4 is all lateral plans of vehicle frame, and Fig. 5 is its plan view, Fig. 6 is its rear view, Fig. 7 is the 7-7 line amplification profile diagram of Fig. 4, and Fig. 8 is the enlarged side view of following framework bottom, and Fig. 9 is its ground plan.
At first, be all general structures of center explanation vehicle body with Fig. 1-Fig. 3.The vehicle frame 4 (Fig. 4) that the water-cooled four cycle formula driving engine 3 that is disposed between front-wheel 1 and the trailing wheel 2 is supported is a diamond type, by main truss 5, vehicle seat rail 6, and down framework 7 constitute, driving engine 3 works as the part of vehicle frame 4.
Main truss 5 to the top that is configured in driving engine 3, has body 10 that pair of right and left ground is provided with and the pivot branch 11 that is disposed at driving engine 3 rears along the vertical direction towards front and back.
The upper end of pivot branch 11 is clipped between the rear end of left and right sides body 10 and welds, and at the front end of the rear portion of the body 10 that becomes this weld part the place ahead welding vehicle seat rail 6.In addition, the bottom of pivot branch 11 is welded to down the front portion of framework 7.Be configured in to following framework 7 pair of right and left the below of vehicle seat rail 6, connect the rear portion and the pivot branch 11 of vehicle seat rail 6, simultaneously, its leading section extends to the below of the bottom of pivot branch 11, constitutes below extension 12.
Pars intermedia in pivot branch 11 is provided with pivot 13, can connect the front end of postbrachium 14 here with freely swinging.The leading section of postbrachium 14 has the bearing portion of left and right sides forked, overlap respectively pivot branch 11 about each lateral surface, connect by scratching axle 13.At the rearward end supporting wheels 2 of postbrachium 14, and posterior bumper 15 is set at pars intermedia, this posterior bumper 15 be connected in along the vertical direction and the pars intermedia of vehicle seat rail 6 between, constitute rear wheel suspension apparatus.
At the leading section installation head pipe 16 of body 10, but by these vehicle seat rail 6 free rotaring ground supporting front forks 17, and make this front fork 17 can be by turning to handle 18 to handle.
As shown in Figure 1, vehicle frame 4 is covered by Windshield 20 and a plurality of vehicle body cover, in the rear of head pipe 16 part, has front shroud 21, radiator shell 22, case cover 23 successively from the place ahead, reaches back wind scooper 24.In addition, guar plate 25 down is set in the place ahead, bottom of driving engine 3.
Symbol 26 among Fig. 1 is a radiator, and symbol 27 is a vehicle seat, and symbol 28 is the side leg, and symbol 29 is main leg.
Describe vehicle frame 4 in detail according to Fig. 4-Fig. 9 below.Pair of right and left body 10 is the iron square tube of cardinal principle Long Circle section, and each front welding manages 16 to the end, and is strengthened by corner plate 30a, 30b.
The pars intermedia bottom of body 10 towards below convex to form stay 31,32, rearward end towards below protrude and form engine lifting bracket 34.In addition, weld the leading section of vehicle seat rails 6 by corner plate 35 in the rearward end of body 10.About 10 of bodies connect (Fig. 5) by crossbeam 36.
Pivot branch 11 is Contraband font section, opens above or below the place ahead opening and upper and lower side court.Weld under the state of each the rearward end inboard that is sandwiched in left and right sides body 10 on its top.Pivot branch 11 can easily be formed by methods such as pressure formings by proper metal plates such as iron plates.But, also can at random be shaped by the proper method beyond the pressure forming.
As shown in Figure 7, pivot branch 11 has back face wall 38 and left and right sides sidewall 39, and mounting hole 40 ground that breakthrough form is formed in left and right sides sidewall 39 each correspondence position set up crossbeam 41, with sidewall 39 welding.
About down framework 7 be fabricated from iron, be square tube type, as Fig. 4 and shown in Figure 8, about clip the left and right sides sidewall 39 of welding pivot branch 11 bottoms down between the front portion of framework 7.About the following below extension 12 that protrudes of the more past below, each leading section constituent ratio pivot branch 11 lower end of framework 7, between its bottom, set up transverse tube 42, its two ends towards about protrude.
About below each bottom Weld-supporting sheet 43 of extension 12, protrude towards the place ahead as engine suspension portion 44 its front portion, protrude towards the rear as main leg installation portion 45 at the rear portion.At main leg installation portion 45 sleeve 46 is set.
Supporting slice 43 forms engine suspension portion 44 and main leg installation portion 45, central portion forms the cardinal principle FangZi Zhuan section portion that covers towards the vehicle body inboard of below extension 12, can by iron plate etc. suitably metal easily form by methods such as pressure formings, with below the bottom vehicle body inside part of extension 12 be fitted under the state of this cardinal principle Contraband font section portion and synthetically weld.
In addition, as Fig. 8 and shown in Figure 9, the bottom outside face of extension 12 is provided with side leg installation portion 47 and it is overlapped under side-looking below the vehicle body left side.Side leg installation portion 47 is formed by proper methods such as pressure formings by suitable metals such as iron, and top is welded to transverse tube 42.
The bottom of side leg installation portion 47 constitutes the tiltedly open inclined plane part 47a of square neck outwardly, and mounting hole 47b and pin 47c here are set.The side leg installation portion 47 and the supporting slice 43 of present embodiment form respectively, and are set to left and right sides either party's side of vehicle body.
As Fig. 2 and shown in Figure 6, about main leg installation portion 45 between the axis of revolution 48 of main leg 29 is set, by the sleeve about making 46 as one man by bolted connection, but free rotaring ground supporting is to framework 7 down.Symbol 49 is a retracing spring, is arranged on a sheet 50 of below extension 12 sides and propping up between the sheet 51 of main leg 29.
On the other hand, side leg 28 is clamped the inclined plane part 47a of side leg installation portion 47 by the furcation 52 of end formed thereon, but by the screw bolt and nut free rotaring ground supporting.The retracing spring 53 of side leg 28 is arranged between the sheet 54 of pin 47c and bottom.
The rearward end of following framework 7 overlaps below the rear portion that is welded to vehicle seat rail 6, and an end of the handle 56 that stretches out towards the vehicle body side nearby is set with FangZi Zhuan substantially at this weld part.Clamp this weld part ground along front and back one end of handle 56 is installed to down the rearward end of framework 7, the other end is installed to vehicle seat rail 6.
About each pars intermedia of vehicle seat rail 6 and following framework 7 dispose brace panel 57.Brace panel 57 is along connecting vehicle seat rail 6 and following framework 7 up and down, and the energy disperser carriage 58 that will support posterior bumper 15 tops thereon near the end is set under side-looking from the position that brace panel 57 staggers towards the place ahead.
The lower end of brace panel 57 is welded to down framework 7, its weld part following framework 7 nearby towards below carriage 59 is set projectedly, back foot (ピ リ オ レ ス テ Star プ) 59a is set in its lower end.
As shown in Figure 4 and Figure 5, the upper end of brace panel 57 overlaps towards the vehicle body medial surface of vehicle seat rail 6, and is integrated continuously with the brace panel 60 that extends towards its length direction.These brace panel 60 chimeric left and right sides vehicle seat rail 6 medial surfaces and top and bottom, weld with top and bottom, and weld with transverse tube 61 around fitting portion at the axial two ends of the chimeric transverse tube 61 that is set up in 6 on left and right sides vehicle seat rail and form gap d with the surface of vehicle seat rail 6 in hole provided thereon respectively.Pars intermedia welding energy disperser carriage 58 at this transverse tube 61.
6 on left and right sides vehicle seat rail at the rear of transverse tube 61 is provided with crossbeam 62,64, vehicle seat supporting support plate 64 (Fig. 5) is set above the vehicle seat rail 6 at each.The stay of symbol 65 among Fig. 4 for stretching out towards the side from each rearward end of left and right sides body 10.
Below, the configuration of driving engine 3 and relative vehicle frames 4 such as a part of subsidiary engine class is described.In Fig. 1 and Fig. 3, driving engine 3 is supported to the central upper of crankcase 71 by engine lifting bracket 34 bottom of body 10.In addition, the upper section at the rear portion of crankcase 71 is by installation portion 72 supportings of the hinge portion 12 that is positioned at pivot 13 tops, and the below part is by 44 supportings of engine suspension portion.
In addition, the rear side at crankcase 71 is provided with pedal frame 74.Pedal frame 74 supports to pivot 13, and lower support is to transverse tube 42 (Fig. 2), and for the place ahead part of bottom member that is roughly L word shape as the place ahead salient 73.
This pedal frame 74 can easily be formed by suitable methods such as pressure formings by proper metal such as iron plates, and pedal 75 before install on the top of salient 73 is forwardly installed fulcrum 76 in the bottom.But at fulcrum 76 free rotaring ground supporting gear shift pedals 77, its revolution makes variable shaft 79 revolutions by connection rod of gear shifting 78.
By scratch branch 11, vehicle seat rail 6, and down framework 7 surround under side-looking, be roughly leg-of-mutton spatial allocation airfilter 80.At the rear portion of airfilter 80, the vehicle body left side constitutes towards the recessed yielding portion 81 of vehicle body center side, utilizes this yielding portion 81 that posterior bumper 15 is arrived vehicle body central authorities towards upper and lower to general arrangements.
The air filter asks vehicle frame 4 ground, the device 80 cross-section left and right sides to be configured to the place ahead of trailing wheel 2, and its lid be can't see in the drawings but in fact is arranged at the vehicle body right side, can open and close from the vehicle body right side.Airfilter 80 by the stay 80a of front end bottom be installed to pivot branch 11 stay 11a, and join the stay 80b on top to vehicle seat rail 6, thereby support to vehicle frame 4.
The taper pipe 82 bonded assembly carburettors 83 that stretch out from airfilter 80 towards the place ahead are configuration discretely on the fore-and-aft direction at vehicle body across pivot branch 11 ground and airfilter 80.In addition, driving engine 3 is the four stroke formula, for can be air-breathing towards its cylinder head 70 straight lines, so, be configured in higher position, under side-looking, overlap with body 10.
Taper pipe 82 stretches out from the top of airfilter 80, at the top height of side-looking next part than vehicle seat rail 6, pass by about body 10 rear portions between and the space that surrounds, the upper end of pivot branch 11 arrive carburettor 83.
The end that resonator 84 nearby is installed at front end and connecting portion carburettor 83 of taper pipe 82.Resonator 84 form substantially on even keels towards front and back to the long size tubular of configuration, the end extends in the space between each leading section of Fuel Tank 85 and airfilter 80 thereafter.On the vehicle seat rail 6 about Fuel Tank 85 supports to, and by vehicle seat 27 switching tops.
10 of left and right sides bodies in the front side of carburettor 83 are provided for controlling 2 secondary air control valves 86 of 2 air that supply to exhaust system, are connected to cylinder head 70 by pipe 87 respectively, are connected to the clean side of airfilter 80 by pipe 88.Pipe 87 is by stay 33 supportings.
In addition, the secondary airfilter 90 of central configuration is connected to carburettor 83 by pipe arrangement 91 between the front portion of left and right sides body 10.Gas leakage flexible pipe 92 reaches the vehicle body right side from the rear portion upper central of crankcase 71, and the side of process body 10 is connected to the clean forequarter of airfilter 80, avoids the heat affecting of driving engine 3 sides.
As depicted in figs. 1 and 2, the side of the partial sum pivot branch 11 that is in wind scooper 24 belows, back of airfilter 80 is covered by pivot branch cover 19.Pivot branch cover 19 is for being roughly the member of Y word shape under the side-looking that is made of suitable materials such as resins, overlap the outside of pedal frame 74, central authorities are fixed to pedal frame 74 at driving engine 3 and scratch branch 11, and top along the back wind scooper 24 the lower end, the front portion is installed to the stay 65 of being located at body 10 rearward end.
In addition, symbol 93 shown in Figure 3 is the radiator water storage tank, and utilization is formed at the vehicle seat rail 6 in vehicle body left side and the space between the following framework 7 is configured, and overlaps with Fuel Tank 85 in the side-looking next part.In addition, symbol 8 is a freeing pipe,, extends towards the rear around the below to crankcase 71 from the front portion of cylinder head 70, is connected to noise silencer 9.Noise silencer 9 comes out towards the vehicle body right side as shown in Figure 2, overlaps the right flank of trailing wheel 2, extends to the below of back foot 60.
The following describes the effect of present embodiment.As Fig. 4, Fig. 8 and shown in Figure 9, the front end that turns to handle 18 is more stretched out towards the below than pivot branch 11 lower ends, as below extension 12, here be provided with engine suspension portion 44 and main leg installation portion 45 incorporate supporting slices 43 and side leg installation portion 47, so, scratch branch 11 and directly do not bear the big load that is applied to supporting slice 43 and side leg installation portion 47 with comparing in the past, so, the rigidity that can correspondingly lower the requirement, thereby can make the 11 small-sized and lightweights of pivot branch, and the overall width direction is narrowed down.Particularly, then can further reduce the cost of pivot branch 11 as pivot branch 11 is formed 1 pressure forming product.
In addition, bear the supporting slice 43 of big load such as driving engine 3 and side leg 28, main leg 29 etc. and side leg installation portion 47 and also utilize the rigidity of the below extension 12 that square tube makes, so, can make its miniaturization and, in addition, owing to can be easily form, so but cost-cutting still by pressure forming etc.And, since engine suspension portion 44 and main leg installation portion 45 is integrally formed as supporting slice 43, so can be single part, can reduce number of components, make easily.Therefore, can make vehicle frame 4 all miniaturization ands, make the vehicle body thin-long, but and cost-cutting.
In addition, separate front and back configuration carburettor 83 and airfilter 80 in pivot branch 11, and pivot branch 11 formed solid memder, even cover rear side by back face wall 38, taper pipe 82 is come out towards the place ahead from airfilter 80 tops, utilization by pivot branch 11 upper ends and about each rearward end of body 10 between the space that forms, pipe arrangement easily.
And, because driving engine 3 is the four stroke formula, so, in the occasion that carburettor 83 is configured to the higher position that is sandwiched in left and right sides body 10, so relatively configuration is more suitable from the pipe arrangement of the above-mentioned taper pipe 82 that stretch out airfilter 80 tops, so these each configuration of components are suitable for four-stroke motor.
The invention is not restricted to the foregoing description, in principle of the present invention, can carry out various deformation and application.For example, also pivot branch 11 can be formed the form that fuses with body 10.In addition, also can cancel the pivot 13 of pivot branch 11, substitute, the pivot branch of postbrachium 14 is set to the rear portion of crankcase 71 as it.
In addition, pivot branch 11, supporting slice 43, and side leg installation portion 47 be not limited to pressure forming, also can be shaped by proper methods such as casting and forgings by aluminum alloy etc.In addition, in the above-described embodiments, the supporting slice 43 that engine suspension portion 44 and main leg installation portion 45 are formed as one, but with the combination of engine suspension portion 44 incorporate leg installation portions be freely, also can engine suspension portion 44 and side leg installation portion 47 is integrated, also can side leg installation portion 47 and main leg installation portion 45 both sides is all integrated with engine suspension portion 44.In latter's occasion, only can have engine suspension portion, side leg installation portion simultaneously, reach 3 functions of main leg installation portion by supporting slice 43.
In addition, what be suitable for two-wheeledly is not limited to cross-country system, also can be various ways, and is not limited to water-cooled four cycle formula driving engine, also applicable to the vehicle that carries air cooling or double stroke formula driving engine.