JP2001115835A - Pipe arranging structure for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe arranging structure for a vehicle capable of improving car body rigidity against a side impact, by arranging a pipe member (referring to an exhaust pipe, a fuel pipe, etc.), extended in the car body longitudinal direction in a vehicle side end part on the vehicle outward side of a side frame extended in the car body longitudinal direction so as to make the pipe member act as a rigid member against a side impact load. SOLUTION: This pipe arranging structure for a vehicle, arranging a pipe member 9 extended in the car body longitudinal direction in the vehicle, is characterized by arranging the pipe member in a vehicle side end part in the vehicle outward side of side frames 7, 7 extended in the car body longitudinal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe arrangement structure for a vehicle in which a pipe member such as an exhaust pipe extending in the front-rear direction of the vehicle body is disposed on the vehicle.

[0002]

2. Description of the Related Art Conventionally, as the above-mentioned pipe arrangement structure for a vehicle, there is, for example, a structure described in Japanese Patent Application Laid-Open No. 7-179130. That is, as shown in FIG. 10, the exhaust gas extends from the engine disposed at the front of the vehicle through the lower portion of the floor panel 91 in the front-rear direction, and is disposed so that the exhaust port 92 faces the rear of the vehicle. A pipe 93 is provided, and the exhaust pipe 93 is provided.
Is divided into a front exhaust pipe 94 and a rear exhaust pipe 95.

The above-mentioned front exhaust pipe 94 is provided with a floor panel 91.
A muffler 97 is interposed in the front exhaust pipe 94 and a flexible hose 98 is interposed behind the muffler 97. .

A rear exhaust pipe 95 connected to the rear end of the front exhaust pipe 94 via a flexible joint 99 is
After being bent along the communicating member 101 of the torsion beam type rear suspension 100 in the vehicle width direction, it is bent in a curved shape to avoid the interference with the connecting member 101 described above, and further, the inner surface of the trailing arm 102 And is formed so as to extend toward the rear of the vehicle body along the line.

As described above, in the conventional pipe arrangement structure of a vehicle, the exhaust pipe 93 as an example of a pipe member is disposed so as to extend in the front-rear direction at the center of the vehicle body. It is impossible to use as a rigid member for
In addition, the structure is extremely disadvantageous in forming a low floor.

[0006]

According to a first aspect of the present invention, there is provided a pipe member extending in the vehicle longitudinal direction at a vehicle-side end of a side frame extending in the vehicle longitudinal direction on the vehicle outer side.
By arranging the exhaust pipe and the fuel pipe, the above-mentioned pipe member acts as a rigid member against a side collision load, thereby improving the rigidity of the vehicle body against the side collision. For the purpose of providing.

According to a second aspect of the present invention, in addition to the object of the first aspect, the above-mentioned pipe member is formed by a vehicle-mounted pipe member connected to a vehicle-mounted apparatus through which a fluid flows and which is connected to a vehicle-mounted device. By arranging the above-mentioned pipe members at the left and right end portions of the vehicle, the above-described pipe member satisfies the requirement of discharging or supplying fluid to the vehicle-mounted device and the requirement of improving rigidity against side collision. It is an object of the present invention to provide a vehicle pipe arranging structure capable of being provided.

According to a third aspect of the present invention, there is provided an exhaust pipe extending in a front-rear direction from a lower portion of a floor from an engine, and the exhaust pipe extends in a front-rear direction along a vehicle-side end and has an arched shape. Inner side of wheel house (tire side)
By arranging the exhaust pipe in an arch shape along, the above-mentioned exhaust pipe can be arranged without avoiding the rear suspension and the fuel tank, and the exhaust pipe is effectively used as a rigid member against side collision load Accordingly, it is an object of the present invention to provide a vehicle pipe arranging structure which can improve the rigidity of a vehicle body and which is extremely advantageous in forming a low floor by providing an exhaust pipe at an end on the vehicle side. .

According to a fourth aspect of the present invention, in addition to the object of the third aspect, the exhaust pipe is provided along a concave portion formed in one of the wheel house inner and the wheel house outer. An object of the present invention is to provide a vehicle pipe arranging structure in which an exhaust pipe is prevented from being exposed below a tire side by arranging the same, and a wheel swing amount can be secured.

According to a fifth aspect of the present invention, in addition to the object of the fourth aspect, the exhaust pipe is provided along a concave portion formed in the wheel house outer. A vehicle that can eliminate the protrusion of the wheel house inner toward the vehicle interior, secure a living space, and prevent the heat of exhaust gas flowing inside the exhaust pipe from being transmitted to the vehicle interior. The purpose is to provide a pipe arrangement structure.

According to a sixth aspect of the present invention, in addition to the object of the third, fourth, or fifth aspect, the vehicle is supported by a suspension member, and the exhaust pipe extends above the suspension member. By providing a structure that is spaced apart so as not to interfere with each other, interference between the exhaust pipe and the suspension member can be avoided, and a low-floor floor is configured by disposing the exhaust pipe at the vehicle-side end. It is an object of the present invention to provide a vehicle pipe arrangement structure that is advantageous above.

According to a seventh aspect of the present invention, in addition to the object of the third, fourth, fifth or sixth aspect of the present invention, a fuel tank is disposed between the wheel houses, so that a side collision can be prevented. An object of the present invention is to provide a pipe arrangement structure for a vehicle that can protect a fuel tank.

According to an eighth aspect of the present invention, in addition to the object of the third, fourth, fifth, sixth or seventh aspect, the sectional shape of the exhaust pipe is changed to the inner side surface of the wheel house (tire side). The surface along the cross-section of the recess formed in the exhaust pipe does not reduce the predetermined cross-sectional area of the exhaust pipe at all. It is an object of the present invention to provide a vehicle pipe arrangement structure capable of ensuring a gap.

According to a ninth aspect of the present invention, in addition to the object of the eighth aspect, the above-described exhaust pipe is formed by hydroforming (a metal tubular member is set in a mold, and By applying high hydraulic pressure from the inside of the member, the tubular member is expanded and deformed to obtain a molded product corresponding to the molding die (hydraulic expansion molding), and the cross-sectional shape of the exhaust pipe can be easily changed It is an object of the present invention to provide a vehicle pipe arranging structure that can be formed and has good formability.

According to a tenth aspect of the present invention, in addition to the object of the third aspect of the present invention, a muffling device provided in the exhaust pipe is provided, and the muffling device is provided on a side of a front seat. An object of the present invention is to provide a pipe arrangement structure of a vehicle in which the above-described muffler functions as a rigid member against a side collision load by arranging, and can protect a front seat occupant in a side collision.

[0016]

According to a first aspect of the present invention, there is provided a pipe arrangement structure for a vehicle in which a pipe member extending in the vehicle longitudinal direction is disposed on the vehicle, wherein the side pipe extends in the vehicle longitudinal direction. It is a pipe arrangement structure of a vehicle in which the above-mentioned pipe member is arranged at a vehicle-side end portion of the frame on the vehicle outer side.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the pipe member is formed by a vehicle-mounted pipe member in which a fluid flows and which is connected to a vehicle-mounted device. It is characterized in that it is a pipe arrangement structure of a vehicle in which the above-mentioned pipe members are arranged at both left and right end portions of the vehicle.

According to a third aspect of the present invention, there is provided an exhaust system which extends from an engine disposed at a front portion of a vehicle to a lower portion of a floor in a front-rear direction and has an exhaust port facing rearward of the vehicle. A pipe arrangement structure for a vehicle comprising a pipe, wherein the exhaust pipe extends in a front-rear direction along a vehicle-side end and extends along an inner surface of an arch-shaped wheel house in which wheels of the vehicle are disposed. The exhaust pipe is a pipe arrangement structure of a vehicle in which the exhaust pipe is arranged in an arch shape.

According to a fourth aspect of the present invention, in addition to the configuration of the third aspect of the invention, the wheel house comprises a wheel house inner and a wheel house outer, and the wheel house inner and the wheel house It is a pipe arrangement structure of a vehicle in which the exhaust pipe is arranged along a recess formed in any of the outers.

According to a fifth aspect of the present invention, in addition to the configuration of the fourth aspect of the invention, the wheel house comprises a wheel house inner and a wheel house outer, and is formed on the wheel house outer. A pipe arrangement structure for a vehicle in which the exhaust pipe is arranged along the recessed portion.

According to a sixth aspect of the present invention, in addition to the configuration of the third, fourth or fifth aspect of the present invention, the wheel is supported by a suspension member, and the exhaust pipe is provided above the suspension member. Is a pipe arrangement structure of a vehicle which is arranged at a distance so as not to interfere with the vehicle.

According to a seventh aspect of the present invention, in addition to the configuration of the third, fourth, fifth or sixth aspect of the present invention, a pipe for a vehicle having a fuel tank disposed between the wheel houses is provided. It is an arrangement structure.

According to an eighth aspect of the present invention, in addition to the configuration of the third, fourth, fifth, sixth or seventh aspect of the present invention, the cross-sectional shape of the exhaust pipe is formed on the inner surface of the wheel house. The present invention is characterized in that it is a pipe arrangement structure of a vehicle configured to have a shape along the cross section of the formed concave portion.

According to a ninth aspect of the present invention, in addition to the constitution of the eighth aspect of the present invention, the exhaust pipe is a vehicle pipe arrangement structure formed by hydroforming. .

According to a tenth aspect of the present invention, in addition to the configuration of the third aspect of the present invention, a muffling device provided in the exhaust pipe is provided, and the muffling device is arranged on a side of a front seat. It is characterized by a pipe arrangement structure of a vehicle.

[0026]

According to the first aspect of the present invention, a pipe member extending in the vehicle longitudinal direction is disposed at the vehicle-side end of the side frame extending in the vehicle longitudinal direction on the vehicle outer side. Therefore, this pipe member acts as a rigid member against a side collision load, and as a result, there is an effect that the rigidity of the vehicle body against a side collision can be improved.

According to the invention described in claim 2 of the present invention,
In addition to the effect of the first aspect of the present invention, the above-mentioned pipe member is constituted by an on-vehicle pipe member in which a fluid flows and connected to an on-vehicle device, and the above-mentioned pipe member is formed on both left and right ends of the vehicle. Since it is disposed in the section, the above-mentioned on-vehicle pipe member has an effect that it can satisfy the requirements for discharging or supplying fluid to the on-vehicle device (see the engine and the fuel tank) and the requirement for improving rigidity against side collision.

According to the third aspect of the present invention,
An exhaust pipe extending in the front-rear direction from the engine to the lower part of the floor is provided, and the exhaust pipe (a pipe member connected to the in-vehicle device and through which exhaust gas flows) extends in the front-rear direction along the vehicle side end, Inner side of arched wheel house
Since the exhaust pipes are arranged in an arch along the (tire side), there is an effect that the above-described exhaust pipes can be arranged without avoiding the rear suspension and the fuel tank.

Further, there is an effect that the rigidity of the vehicle body can be improved by effectively utilizing the exhaust pipe described above as a rigid member against a side collision load. Moreover, since the above-described exhaust pipe is provided at the end on the vehicle side, a low-floor floor is constituted, which is extremely advantageous.

According to the invention described in claim 4 of the present invention,
In addition to the effect of the third aspect of the present invention, since the exhaust pipe is disposed along the concave portion formed in either the wheel house inner or the wheel house outer, the exhaust pipe is exposed below the tire side. Therefore, there is an effect that the swing amount of the wheel can be secured without hindering the swing of the wheel.

According to the invention described in claim 5 of the present invention,
In addition to the effect of the fourth aspect of the present invention, since the exhaust pipe is disposed along the recess formed in the wheel house outer, the protrusion of the wheel house inner into the vehicle interior can be eliminated, As a result, there is an effect that a living space can be secured. In addition, by forming the recess on the outer side of the wheel house, the separation distance between the vehicle interior and the exhaust pipe can be set as large as possible, preventing the heat of the exhaust gas flowing inside the exhaust pipe from being transmitted to the vehicle interior. There is an effect that can be.

According to the sixth aspect of the present invention,
In addition to the effects of the invention described in claim 3, 4, or 5,
While the wheels are supported by the suspension member, the above-described exhaust pipe is disposed so as not to interfere above the suspension member, so that interference between the exhaust pipe and the suspension member can be avoided. The configuration in which the pipe is disposed at the vehicle side end is advantageous in forming a low floor.

According to the invention described in claim 7 of the present invention,
In addition to the effects of the invention described in claim 3, 4, 5 or 6, the fuel tank is disposed between the wheel houses.
There is an effect that the fuel tank can be reliably protected at the time of a side collision of the vehicle.

According to the eighth aspect of the present invention,
In addition to the effects of the third, fourth, fifth, and sixth aspects of the present invention, the cross-sectional shape of the exhaust pipe is adjusted along the cross-section of the concave portion formed on the inner surface (the tire-side surface) of the wheel house. Since the shape is formed, there is an effect that a required gap between the exhaust pipe and its surroundings can be ensured without reducing the predetermined cross-sectional area of the exhaust pipe at all, even if the recess is formed small.

According to the ninth aspect of the present invention,
In addition to the effect of the invention described in claim 8, the above-described exhaust pipe is formed by hydroforming (in other words, the exhaust pipe is formed by hydroforming parts), so that the cross-sectional shape of the exhaust pipe is easily changed and It can be formed in a shape corresponding to the concave portion, and there is an effect that its moldability is also good.

According to the tenth aspect of the present invention, in addition to the effect of the third aspect, a muffler provided in the exhaust pipe is provided, and the muffler is mounted on the front seat side. As a result, the above-described muffler acts as a rigid member against a side collision load, and as a result, there is an effect that a front seat occupant can be protected during a side collision.

[0037]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. The drawings show the pipe arrangement structure of the vehicle. First, the overall configuration of the vehicle will be described with reference to FIG.

The vehicle 1 is a vehicle in which the cabin floor 2 and (that is, the floor panel) the luggage compartment floor 3 (that is, the rear floor panel) are lowered.
3, left and right wheel houses 5, 5 bulging toward the vehicle interior are formed only at positions corresponding to the rear wheels 4, 4.

A thin box-shaped fuel tank 6 is disposed below the cabin floor 2 and between the left and right wheel houses 5, 5, and is joined to the lower surface of the floor on both sides of the fuel tank 6. A pair of left and right main side frames 7,
Reference numeral 7 extends in the vehicle front-rear direction.

The pair of main side frames 7, 7
Outboard of the right main side frame 7 is an exhaust pipe 9 for exhausting exhaust exhausted by an engine 8 (see FIG. 5) disposed at the front of the vehicle to the rear of the vehicle. The fuel supply unit 1 is disposed so as not to interfere with the upper part of the vehicle, and is disposed in the front-rear direction of the vehicle.
A fuel pipe 12 for guiding fuel from 1 to a fuel tank 6 is arranged in an arch shape along the wheel house 5.

Further, a pair of trailing arms 13, 13 of a rear suspension for supporting the left and right rear wheels 4, 4 are arranged on the outer sides of the main side frames 7, 7, respectively.

The pair of trailing arms 13, 1
3 is a torsion beam 14 extending in the vehicle width direction at the middle part.
Are interconnected by

Further, on the vehicle front side of the trailing arms 13, 13, linking portions 13a,
Strut dampers 15, 15 pivotally supported by 13a,
It is arranged to be inclined backward in the vehicle front-rear direction.

Next, the lower body structure of the vehicle will be described with reference to FIGS. 2, 3, and 4, a cabin floor 2, that is, a floor panel, formed in a substantially flat tunnelless structure is provided, and at the lower portion of the cabin floor 2, left and right ends of the cabin floor 2. A pair of left and right main side frames 7, 7 extending in the front-rear direction along the vicinity of the inside of the portion are provided.

The left and right main side frames 7,
The front ends of a pair of right and left front side frames 16, 16 extending to the front end of the vehicle are connected to the front ends of the main side frames 7, 7 and the front side frame 1 described above.
As shown in FIG. 4, the reference numerals 6 and 16 are substantially linear in plan view.

The front ends of a pair of left and right rear side frames 17, 17 extending to the rear end of the vehicle are connected to the rear ends of the left and right main side frames 7, 7, respectively. Frame 17,
17 are substantially linear in plan view as shown in FIG.

Here, the above-described front side frame 1
A first cross member 18 (front cross member) extending in the vehicle width direction is stretch-joined between the front ends of the front side frames 6, 16, and extends in the vehicle width direction between the rear ends of the front side frames 16, 16. The second cross member 19 is stretch-joined, and a third cross member 21 extending in the vehicle width direction is stretch-joined between the intermediate portions of the main side frames 7, 7 at a portion corresponding to the lower end of the center pillar 20. A fourth cross member 22 extending in the vehicle width direction is stretch-joined between the rear ends of the main side frames 7, 7, and a fourth cross member 22 extending in the vehicle width direction between the rear ends of the rear side frames 17, 17 is provided. The five cross members 23 (rear cross members) are stretch-joined.

The above-mentioned third cross member 21 and fourth cross member 22 are a pair of cross members which are separated in the vehicle front-rear direction and extend in the vehicle width direction, and each of these cross members joined to the main side frames 7, 7 Members 21, 22
The above-mentioned left and right main side frames 7, 7 are formed in a substantially well-shape in plan view as shown in FIG. 4, and the above-mentioned combustion tank 6 is specifically arranged between the left and right wheel houses 5, 5. Are arranged and fixed in a substantially well-shaped space. The above-mentioned cross members 18, 19, 21, 2
Numerals 2 and 23 constitute a closed cross section extending in the vehicle width direction between the cross member alone or between the cross member and the cabin floors 2 and 3.

Also, a pair of left and right main side frames 7,
Reference numeral 7 denotes a closed section extending between the frames 7, 7 and the passenger compartment floor 2 in the vehicle front-rear direction. Here, the above-described front side frame 16 and rear side frame 1
The strength of the main side frame 7 may be set lower than the strength of the main side frame 7 so as to protect the cabin by absorbing the impact energy of the front and rear frames 16 and 17 in the event of a vehicle collision. 1 to 4, reference numeral 24 denotes a front wheel.

As shown in FIG. 4, a pair of left and right floor extension panels 25, 25 extending outward from the vehicle cabin floor 2 are provided outside the vehicle body of the left and right main side frames 7, 7, respectively. The above-mentioned floor extension panel 25 extends in the vehicle front-rear direction corresponding to substantially the entire length of the main side frame 7, as shown in FIG.

The vehicle floor 2, the main side frame 7, and the floor extension panel 25 are connected and fixed by a pair of left and right floor side reinforcements 26, 27, 28 as reinforcing members. Each of these floor side reinforcements 26, 2
Reference numerals 7 and 28 denote hydroform parts which are formed in an inverted U shape.

As shown in FIG. 4, the left and right pair of floor side reinforcements 26, 27, 28 are located at a position corresponding to the lower end of the front pillar, a position corresponding to the lower end of the center pillar 20, and an intermediate portion of the fuel tank 6. Between the floor side reinforcement 27 at a position corresponding to the lower end of the center pillar 20 and the floor side reinforcement 28 at a position corresponding to the middle part of the fuel tank 6. To the floor side reinforcement 2 corresponding to the lower end of the front pillar
6 is set smaller than the separation distance between the floor pillar reinforcement 27 and the position corresponding to the lower end of the center pillar 20 to protect the fuel tank 6 from a side collision load input.

Further, the conventional side sill is constructed by the above-described structure.
(Rigid member with a large closed cross section) is eliminated, and the side sillless floor is reduced. As shown in FIG. 3, a portion corresponding to each element 7, 22, 23 in the above-mentioned luggage compartment floor 3 (rear floor panel) is formed in a concave shape, and a storage portion (storage) for storing spare tires and the like. 29 are constituted.

FIGS. 5, 6 and 7 show a vehicle pipe arrangement structure (fuel pipe arrangement structure). A fuel pipe 12 as a pipe member extending substantially in the front-rear direction of the vehicle when viewed from above is a hydropipe. This fuel pipe 1 is composed of foam parts.
Numeral 2 is disposed on the vehicle-side end of the main side frame 7 and the rear side frame 17 extending in the vehicle front-rear direction on the left side of the vehicle on the vehicle outer side.

The wheel house 5 includes a wheel house inner panel 30 and a wheel house outer panel 31.
And the wheel house outer panel 31
On the inner side of the tire (the side on the tire side), a recess 3
1a is formed, and the above-described fuel pipe 12, particularly a portion extending in the vehicle front-rear direction, is disposed along the above-described recess 31a. The fuel pipe 12 disposed in the concave portion 31a is held by a holding plate 32 and a holding member 33 such as a bolt and a nut.

FIGS. 5, 8, and 9 show a vehicle pipe arrangement structure (exhaust pipe arrangement structure). A main part of an exhaust pipe 9 as a pipe member extending in the vehicle longitudinal direction is a right side of the vehicle. The main side frame 7 and the rear side frame 17 extending in the front-rear direction of the vehicle body are disposed at vehicle-side end portions on the vehicle outer side.

The exhaust pipe 9 described above purifies, silences and exhausts the exhaust gas of the engine 8 (vehicle-mounted device) disposed in the engine room 34 at the front of the vehicle. A catalytic converter 35 (so-called catalyst) and a silencer 36 as a silencer are interposed.

The above-described exhaust pipe 9 extends from the engine 8 to the vehicle cabin floor 2, more specifically, extends below the floor extension panel 25 in the vehicle front-rear direction, and is disposed so that the exhaust port 37 faces the rear of the vehicle. However, in a portion where the wheels of the vehicle, that is, the rear wheels 4 are provided, the exhaust pipe 9 is provided in an arch-like portion 9 a provided in an arch shape along the inner side surface (the surface on the tire side) of the wheel house 5. have.

As shown in FIG. 9, the wheel house 5 described above is formed in an arch shape from a wheel house inner panel 30 and a wheel house outer panel 31, and the inner side surface (tire side) of the wheel house outer panel 31.
Is formed with a recess 31b for arranging an exhaust pipe.
An arch-shaped portion 9a of the exhaust pipe 9 is arranged alongside 1b.

As shown in FIG. 9, the cross-sectional shape of the arc-shaped portion 9a of the exhaust pipe 9 is substantially elliptical so as to follow the cross-section of the concave portion 31b formed on the inner surface of the wheel house 5. ing.

In the exhaust pipe 9, a portion on the rear side of the flange 38 shown in FIGS. 5 and 8 (including the arched portion 9a)
Is a hydroform (a metal tubular member is set in a mold, and a hydraulic pressure such as a high oil pressure is applied from the inside of the tubular member to expand and deform the tubular member to form a molded product corresponding to the mold. (Hydraulic expansion molding). That is, at least a part of the exhaust pipe 9 is constituted by the hydroform part.

As shown in FIG. 9, an insulator 39 having heat insulating properties is disposed on the tire-side surface of the wheel house inner panel 30 and the wheel house outer panel 31, and the insulator 39 controls the exhaust gas flowing inside the exhaust pipe 9. It is configured to prevent heat from being transmitted to the tire of the rear wheel 4. The above-mentioned insulator 39 is fixed to the wheel house by attaching means (not shown) such as a clip.

On the other hand, as shown in FIGS. 5 and 8, the silencer 36 interposed in the exhaust pipe 9 is disposed on the side of the front seat. In this embodiment, the above-described silencer 36 is disposed on the vehicle outer side of the main side frame 7 corresponding to the space between the lower part of the front pillar and the lower part of the center pillar 20 and below the floor extension panel 25. It is designed to protect front passengers.

As described above, according to the pipe arranging structure of the vehicle of the above embodiment, the side frames extending in the front-rear direction of the vehicle body (see the main side frame 7 and the rear side frame 17).
A pipe member (see the exhaust pipe 9 or the fuel pipe 12) extending in the front-rear direction of the vehicle body is disposed at the vehicle-side end of the vehicle outside, so that this pipe member acts as a rigid member against a side collision load. As a result, there is an effect that the rigidity of the vehicle body against a side collision can be improved.

The above-mentioned pipe member (see the exhaust pipe 9 and the fuel pipe 12) is connected to a vehicle-mounted device (see the engine 8 and the fuel tank 6) through which a fluid (see exhaust and fuel) flows. Since the above-mentioned pipe members are provided at both left and right end portions of the vehicle, the above-mentioned pipe members are provided at the left and right side ends of the vehicle (see the exhaust pipe 9 and the fuel pipe 12). This has the effect of satisfying the requirements for the discharge or supply of fluid (see exhaust and fuel) for the reference and the requirement for improving the rigidity against side collisions.

Further, an exhaust pipe 9 extending in the front-rear direction from the engine 8 below the floors 2 and 3 is provided.
(A pipe member connected to the engine 8 as an in-vehicle device and through which exhaust gas flows) extends in the front-rear direction along the vehicle-side end, and the inner surface of the arch-shaped wheel house 5 (the tire side). Since the exhaust pipe 9 (especially, the arched portion 9a) is arranged in an arch shape along the surface), the above-mentioned exhaust pipe 9 can be arranged without avoiding the rear suspension (see the components 13, 14, 15) and the fuel tank 6. There is an effect that the exhaust pipe 9 can be provided.

Also, there is an effect that the rigidity of the vehicle body can be improved by effectively utilizing the exhaust pipe 9 as a rigid member against a side collision load. Further, since the above-mentioned exhaust pipe 9 is provided at the end on the vehicle side, it is very advantageous because it constitutes a low floor.

In addition, the wheel house inner panel 30
And the above-described exhaust pipe 9 is disposed along the concave portion 31b formed in any of the wheel house outer panels 31.
The effect that the exhaust pipe 9 is prevented from being exposed below the tire side, so that the swing of the wheel (see the rear wheel 4) is not hindered and the swing amount of the wheel (see the rear wheel 4) can be secured. There is.

Further, since the exhaust pipe 9 is provided along the recess 31b formed in the wheel house outer panel 31, the wheel house inner panel 3 is formed in comparison with the structure in which the recess is formed in the wheel house inner panel.
0 can be prevented from protruding into the vehicle interior, and as a result, there is an effect that a living space can be secured. Also the recess 31
By forming b at the wheel house outer panel 31 side, the separation distance between the vehicle interior and the exhaust pipe 9 can be set as large as possible, and the heat of the exhaust gas flowing inside the exhaust pipe 9 is transmitted to the vehicle interior. There is an effect that can be prevented.

On the other hand, while the wheels (see the rear wheels 4) are supported by suspension members (see the respective elements 13, 14, 15), the above-mentioned exhaust pipes 9 are spaced apart so as not to interfere above the suspension members. Therefore, the interference between the exhaust pipe 9 and the suspension member can be avoided, and the arrangement of the exhaust pipe 9 at the end on the vehicle side is advantageous in forming a low floor.

Further, since the fuel tank 6 is arranged between the left and right wheel houses 5, 5, there is an effect that the fuel tank 6 can be surely protected at the time of a side collision of the vehicle.

Further, since the cross-sectional shape of the exhaust pipe 9 is formed along the cross section of the concave portion 31b formed on the inner side surface (the surface on the tire side) of the wheel house 5, the predetermined cross-sectional area of the exhaust pipe 9 is obtained. Even if the concave portion 31b is formed small without any reduction in the size, the effect that the required gap between the exhaust pipe 9 and its surroundings (see the wheel house inner panel 30 and the wheel house outer panel 31) can be ensured. is there.

In addition, since the above-mentioned exhaust pipe 9 is formed by hydroforming (in other words, the exhaust pipe 9 is composed of a hydroform part), the cross-sectional shape of the exhaust pipe 9 is easily changed to correspond to the concave portion 31b. It can be formed into a shape and its moldability is also good.

On the other hand, a silencer (see silencer 36) provided in the above-mentioned exhaust pipe 9 is provided, and this silencer (see silencer 36) is arranged on the side of the front seat. It acts as a rigid member against the load, and as a result, there is an effect that the front seat occupant can be protected during a side collision.

In correspondence between the structure of the present invention and the above-described embodiment, the pipe member of the present invention corresponds to the exhaust pipe 9 and the fuel pipe 12 of the embodiment, and similarly, the wheels are connected to the rear wheel 4. Corresponding, the side frame is the main side frame 7,
Corresponding to the rear side frame 17, the in-vehicle device corresponds to the engine 8 and the fuel tank 6, the floor corresponds to the cabin floor 2, the luggage floor 3, and the wheel house inner is
The wheel house outer panel corresponds to the wheel house inner panel 30, the wheel house outer panel 31 corresponds to the wheel house outer panel 31, the recess corresponds to the recess 31b for arranging the exhaust pipe, and the suspension member includes the trailing arm 13, the torsion beam 14, the strut. Although the silencer corresponds to the damper 15 and the silencer corresponds to the silencer 36, the present invention is not limited to the configuration of the above-described embodiment.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of an entire vehicle including a vehicle pipe arrangement structure of the present invention.

FIG. 2 is a perspective view showing a vehicle body structure.

FIG. 3 is a side view showing a vehicle body structure.

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is a plan view showing the pipe arrangement structure of the vehicle according to the present invention.

FIG. 6 is a side view of FIG. 5;

FIG. 7 is a sectional view taken along line AA of FIG. 5;

FIG. 8 is a side view of FIG. 5;

FIG. 9 is a sectional view taken along line BB of FIG. 5;

FIG. 10 is a perspective view showing a conventional pipe arrangement structure of a vehicle.

[Explanation of symbols]

 2, 3 ... floor 4 ... rear wheel (wheel) 5 ... wheel house 6 ... fuel tank (vehicle unit) 7 ... main side frame (side frame) 8 ... engine (vehicle unit) 9 ... exhaust pipe (pipe member) 12 ... Fuel pipes (pipe members) 13, 14, 15 ... suspension members 17 ... rear side frames (side frames) 30 ... wheel house inner panels 31 ... wheel house outer panels 31b ... recesses 36 ... silencers (silencers) 37 ... exhaust ports

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Fumio Okana 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda F-term (reference) 3D038 BA13 BA16 BB01 BC07 BC08 CA12 CA18 CB01 CC13 CD05 3G004 BA09 DA01 DA13

Claims (10)

[Claims] 1. A vehicle pipe arrangement structure in which a pipe member extending in a vehicle longitudinal direction is disposed on a vehicle, wherein the pipe is provided at a vehicle-side end of a side frame extending in a vehicle longitudinal direction on a vehicle outer side. A pipe arrangement structure of a vehicle in which members are arranged. 2. The vehicle according to claim 1, wherein said pipe member comprises an on-vehicle pipe member through which a fluid flows and which is connected to an on-vehicle device, and said pipe members are disposed at both left and right ends of a vehicle. Vehicle pipe arrangement structure. 3. A pipe arrangement for a vehicle comprising an exhaust pipe extending from the engine disposed at the front of the vehicle to the lower part of the floor in the front-rear direction and facing the exhaust port to the rear of the vehicle. The exhaust pipe extends in the front-rear direction along the vehicle-side end, and the exhaust pipe is arranged in an arch shape along the inner surface of an arch-shaped wheel house in which wheels of the vehicle are arranged. Pipe installation structure of the vehicle. 4. The wheel house comprises a wheel house inner and a wheel house outer, and the exhaust pipe is disposed along a recess formed in one of the wheel house inner and the wheel house outer. 4. The pipe arrangement structure for a vehicle according to 3. 5. A pipe arrangement for a vehicle according to claim 4, wherein said wheel house comprises a wheel house inner and a wheel house outer, and said exhaust pipe is disposed along a concave portion formed in said wheel house outer. Installation structure. 6. A vehicle pipe arrangement according to claim 3, wherein said wheel is supported by a suspension member, and said exhaust pipe is spaced apart so as not to interfere above said suspension member. Construction. 7. A vehicle pipe arrangement according to claim 3, wherein a fuel tank is disposed between said wheel houses. 8. A vehicle pipe according to claim 3, wherein the cross section of said exhaust pipe is formed along a cross section of a concave portion formed on an inner side surface of said wheel house. Arrangement structure. 9. The vehicle pipe arrangement structure according to claim 8, wherein said exhaust pipe is formed by hydroforming. 10. A pipe arrangement structure for a vehicle according to claim 3, further comprising a silencer provided in said exhaust pipe, said silencer being disposed on a side of a front seat.