CN1286694C - Automoive rear buffer distribution structure - Google Patents

Abstract

The invnention provides arrangement structure of a rear cushion for a vehicle that can improve the freedom of design and enlarge capacity without interfering with an intake passage extended frontward from an air cleaner, nor needing to take into consideration interference with the rear cushion on the rear side of the air cleaner. The rear cushion 54 is disposed between the body frame 11 side and the rear arm 14 side supporting a rear wheel 15 in a vertically swingable manner, and the air cleaner 38 is arranged on the upper side of the rear cushion 54. An upper end part 54b of the rear cushion and a front end face 38b of the air cleaner 38 are set into almost the same position in the longitudinal direction of the vehicle.

Description

Automoive rear buffer distribution structure

[technical field that the present invention belongs to]

The present invention relates to the rear buffer configuring structure in the vehicles such as a kind of two-wheeled motor vehicle.

[prior art]

Traditional two-wheeled motor vehicle disposes trailing wheel via postbrachium on the vehicle frame as skeleton, but its easy on and off swing simultaneously, is disposed the posterior bumper that absorbs impact between this postbrachium and vehicle frame.

On the other hand, near this posterior bumper, dispose airfilter in the following survey of vehicle seat, this airfilter is connected on the engine by air suction way.

[inventing problem to be solved]

But, in this prior art, this posterior bumper must be guaranteed the stroke stipulated in order to absorb impact, and the upper end of posterior bumper has to be set in than on the higher position, simultaneously, because this posterior bumper produces swing, therefore, must consider to influence the air suction way that forwards extends from airfilter, simultaneously, must consider that also the rear portion side of airfilter also may be subjected to the influence of posterior bumper, thereby the design-calculated degree of freedom is restricted, can not enlarges capacity.

Therefore, the purpose of this invention is to provide a kind of automoive rear buffer distribution structure, wherein, posterior bumper can not produce the air suction way that forwards extends from airfilter and disturb, simultaneously, needn't consider that also the rear portion side of this airfilter can be subjected to the interference of posterior bumper, therefore, can improve the design-calculated degree of freedom, the expansion capacity.

[scheme of dealing with problems]

To achieve these goals, the invention that claim 1 is put down in writing is that a kind of vehicle cushions the ground configuration structure with the back, it is characterized by, but swingingly support the postbrachium side of trailing wheel and vehicle frame at easy on and off and dispose posterior bumper between surveying, simultaneously, at the upside of this posterior bumper configuration airfilter, with the set positions of the front end face of the position of the upper end of aforementioned posterior bumper and aforementioned airfilter roughly the same position on the fore-and-aft direction of vehicle.

The invention that claim 2 is put down in writing on the basis of the invention that claim 1 is put down in writing, is characterized by, and forms in the preceding side lower part of aforementioned airfilter and inserts recess, and the upper end of aforementioned posterior bumper is arranged in this insertion recess.

The invention that claim 3 is put down in writing, on the basis of claim 1 or 2 inventions of being put down in writing, it is characterized by, during from lateral observation, aforementioned posterior bumper intersects with aforementioned postbrachium, the lower end part of this posterior bumper simultaneously, links to each other with the connecting rod that is erected between aforementioned vehicle frame and the aforementioned postbrachium in the below of aforementioned postbrachium.

The invention that claim 4 is put down in writing, on the basis of claim 1 or 2 inventions of being put down in writing, the upper end of aforementioned posterior bumper links to each other to the carriage of car body rear extension with transverse member from the vehicle-width direction that is erected at aforementioned vehicle frame.

[effect of invention]

As explained above, adopt the described invention of claim 1, posterior bumper is at the downside of airfilter, with the set positions of the upper end of this posterior bumper in the position roughly the same with the front end face of airfilter, thereby, this posterior bumper not can with the air suction way that extends forward from airfilter upper side mutual interference mutually, simultaneously, also needn't worry the rear portion side and posterior bumper mutual interference mutually of airfilter, thereby, can improve the design-calculated degree of freedom, enlarge the capacity of airfilter.And, owing to can make the straight shaping of air suction way, therefore, can obtain good gettering efficiency, and improve the performance of driving engine.

Adopt the described invention of claim 2, on the basis of above-mentioned effect, form the insertion recess by preceding side lower part at airfilter, make the upper end of posterior bumper be arranged in this insertion recess, can make the insertion recess part in addition of airfilter outstanding downwards, owing to this point, can guarantee the volume of airfilter.

Adopt the described invention of claim 3, on the basis of above-mentioned effect, from lateral observation, posterior bumper intersects with postbrachium, and the lower end part of this posterior bumper is in the below of postbrachium, simultaneously, because the connecting rod that is set up between vehicle frame and the postbrachium connects, thus can guarantee the stroke of posterior bumper, and this posterior bumper can be arranged at the below.

Adopt the described invention of claim 4, on the basis of above-mentioned effect, the upper end of posterior bumper is connected to crossbeam on the vehicle-width direction that is erected at vehicle frame on the carriage of car body rear extension, therefore, the left and right sides in the upper end of posterior bumper can make airfilter forwards project to the dead aft of crossbeam so that increase volume.

[simple declaration of accompanying drawing]

Fig. 1 relates to the lateral plan of the two-wheeled motor vehicle of the embodiment of the invention.

Fig. 2 relates to the planar view of the two-wheeled motor vehicle of same embodiment.

Fig. 3 is the lateral plan that expression relates to vehicle frame, driving engine, posterior bumper, airfilter and the trailing wheel etc. of same embodiment.

Fig. 4 relates to the planar view of the vehicle frame of same embodiment.

Fig. 5 is the diagram of expression part of the vehicle frame of the same embodiment of arrow A direction observation from Fig. 3.

Fig. 6 is the diagram of expression part of the vehicle frame of the same embodiment of arrow B direction observation from Fig. 3.

Fig. 7 is the diagram of same embodiment, is the diagram that is illustrated among Fig. 3 the part of the vehicle frame state after the airfilter etc. removed, that observe along the arrow C direction.

Fig. 8 is the partial cut away side views that expression relates to the airfilter of same embodiment.

Fig. 9 relates to the planar view of the airfilter of same embodiment.

Figure 10 is the lateral plan from the airfilter that relates to same embodiment of the direction observation opposite with Fig. 8.

Figure 11 is the diagram that expression relates to same embodiment airfilter, is the figure that observes along arrow directions X among Figure 10.

[label declaration]

11 vehicle frames

12 single cylinder engines

14 postbrachiums

The 14a leading section

The 14b rearward end

15 trailing wheels

27 crossbeams

38 airfilters

38a inserts recess

The 38b front end face

39 air suction ways

54 posterior bumpers

The 54a bottom

The 54b upper end

62 posterior bumper carriages

[inventive embodiment]

Below, describe according to this inventive embodiment.

Represent embodiments of the invention among Fig. 1 to Figure 11.

At first, its structure is described.In the two-wheeled motor vehicle of this embodiment, single cylinder engine 12 is fixed on the vehicle frame 11 as skeleton, and simultaneously, front-wheel 13 is supported in the front of described vehicle frame 11 by steering shaft etc., and, but the postbrachium 14 that trailing wheel 15 is swung by easy on and off is bearing in rear end side.And the propulsive effort of driving engine 12 is passed to described trailing wheel 15 by messenger chain 16 transmission devices such as grade.In addition, in Fig. 1 and Fig. 2, the vehicle seat that label 17 is taken for chaufeur, label 18 is a Fuel Tank.

Shown in Fig. 3 waited, vehicle frame 11 was provided with the tubular head pipe 19 that is run through by aforementioned steering shaft at leading section, was rear side that the exterior region 20a of rectangular bobbin carriage 20 be fixed on this front tube 19 by welding with section with so-called centering structure.

And, on the one hand, one end 21a of pair of right and left seat pillar 21 is fixed on by welding on the sidepiece on 20b top, rear portion of described bobbin carriage 20, and on the other hand, an end 22a of pair of right and left down pipe 22 is fixed by welding on the side of 20b bottom, described rear portion.And the other end 21b of described seat pillar 21 and the other end 22b of down pipe 22 are connected by connection pipe 23.

And, the leading section 24a of seat rail 24 is fixed on the top of described seat pillar 21, these seat rail 24 approximate horizontal are rearward extended, and, the leading section 25a of backstay 25 is fixed on the bottom of seat pillar 21 by welding, described backstay 25 rearward extends obliquely, and end 25b is fixed on the aforementioned seat rail 24 by welding thereafter.

In addition, between the rearward end 24b of the rearward end 25b of described backstay 25 and seat rail 24, set up reinforced pipe 26.

And, on the one hand, set up the transverse tube 27 that has connected left and right sides seat pillar 21 at the pars intermedia of the above-below direction of described seat pillar 21, on the other hand, in the rearward end 24b of two seat rails 24 side, as shown in Figure 4, set up seat tray 30, the 1 carriages 31 and the 2nd the holder drive 32.

And, as shown in Figure 3, but the leading section 14a of aforementioned postbrachium 14 swingingly be installed in by pivot 34 easy on and off on the carriage 33 on the seat pillar 21 that is fixed in vehicle frame 11, trailing wheel 15 is supported on the rearward end 14b of this postbrachium 14.Between this postbrachium 14 and vehicle frame 11, be provided with posterior bumper 54 by first connecting rod 55 and second connecting rod 56.

That is, first connecting rod 55 is roughly triangular in shape, but leading section swingingly be arranged on the vehicle frame 11 by primary shaft 58 easy on and off, be disposed at the following survey of postbrachium 14.

And an end 56a of second connecting rod 56 by second 59 bottom that can be connected to first connecting rod 55 rear ends with rotating freely, and the other end 56b of this second connecting rod can be connected on the postbrachium 14 with rotating freely.

And the bottom 54a of posterior bumper 54 can be connected to the top of first connecting rod 55 rear ends by third axle 60 with rotating freely, and simultaneously, the upper end 54b of posterior bumper 54 can be installed on the crossbeam 27 that is set up on the seat pillar 21 with rotating freely.As shown in Figure 7, this crossbeam 27 is provided with the pair of right and left posterior bumper carriage 62 to the car body rear extension, and as shown in figure 11, the upper end 54b of posterior bumper 54 can be arranged on this carriage 62 by bolt 63 with rotating freely.

Upside at this posterior bumper 54 disposes airfilter 38, and as shown in figure 11, the upper end 54b of posterior bumper 54 is arranged in the insertion recess 38a that is formed on these airfilter 38 preceding side lower parts.

This airfilter 38 is roughly quadrangle, is fixed on the airfilter bracket 47 (with reference to Fig. 4) of vehicle frame 11, and be in the roughly the same position of vehicle fore-and-aft direction with the set positions of the upper end 54b of the position of front end face 38b and posterior bumper 54.And air suction way 39 forwards extends from the upper side of airfilter 38, and this air suction way 39 is connected on the driving engine 12 by carburettor 40.

At this, because posterior bumper 54 is positioned at the downside of airfilter 38, with the set positions of the upper end 54b of this posterior bumper 54 in the position roughly the same with the front end face 38b of airfilter 38, therefore, this posterior bumper 54 can not be subjected to the interference of the air suction way 39 that forwards extends from the upper side of airfilter 38, simultaneously, owing to also needn't worry the rear portion side of airfilter 38 and the interference of posterior bumper 54, thereby, can improve the design-calculated degree of freedom, enlarge the capacity of airfilter 8.

And, preceding side lower part at this airfilter 38 forms insertion recess 38a, is arranged in this insertion recess 38a by the upper end 54b that makes posterior bumper 54, can make the insertion recess 8a part in addition of airfilter 38 outstanding downwards, like this, can guarantee the volume of airfilter 38.

And then, since needn't worry from the air suctiton inlet of driving engine 12 to airfilter 38 air suction way 39 can and the mutual interference mutually of posterior bumper 54, so be designed to be roughly linearity, can improve the performance of driving engine.

And, posterior bumper 54 is connected on the postbrachium 14 by first connecting rod 55 and second connecting rod 56, because first connecting rod 55 is configured in the following survey of postbrachium 14, so can make posterior bumper 54 be positioned at the below, thereby, even the upper end 54b of this posterior bumper 54 is set in above-mentioned position, also can guarantee the stroke amount of this posterior bumper 54.

In addition, insertion recess as the airfilter of an element of the present invention, be not limited to the foregoing description insertion recess 38a such, that side surface part is opened along the vehicle-width direction of airfilter 38, as long as the upper end 54b of posterior bumper 54 is inserted, and there is not the restriction of special shape, as the open insertion recess of survey face of the following and front side that can make airfilter.

Claims (4)

1, a kind of automoive rear buffer distribution structure, it is characterized by, but swingingly support between the postbrachium side of trailing wheel and the frame sides at easy on and off and to dispose posterior bumper, simultaneously, at the upside of this posterior bumper configuration airfilter, with the set positions of the front end face of the position of described posterior bumper upper end and described airfilter roughly the same position on the fore-and-aft direction of vehicle.

2, automoive rear buffer distribution structure as claimed in claim 1 is characterized by, and forms in the preceding side lower part of described airfilter and inserts recess, and the upper end of described posterior bumper is arranged in this insertion recess.

3, automoive rear buffer distribution structure as claimed in claim 1 or 2 is characterized by, during from lateral observation, described posterior bumper intersects with described postbrachium, the lower end part of this posterior bumper simultaneously, links to each other with the connecting rod that is erected between described vehicle frame and the described postbrachium in the below of described postbrachium.

4, automoive rear buffer distribution structure as claimed in claim 1 or 2 is characterized by, the upper end of described posterior bumper with link to each other to the carriage of car body rear extension from the transverse member that is erected at described vehicle frame vehicle-width direction.

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