JPH05178239A - Rear part car body structure of automobile - Google Patents

Abstract

PURPOSE:To surely prevent the interference between a silencer and a road surface, extremely suppressing the overhang on a rear side. CONSTITUTION:As for the rear part car body structure for an automobile, a spare tire accommodation hole 8 for accommodating a spare tire 7 is formed on a rear floor 2, the spare tire accommodation hole 8 is inclined so as to be higher toward the rear part of the car body, and a silencer 19 is arranged below the spare tire accommodation hole 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear body structure of an automobile.

[0002]

2. Description of the Related Art In a rear vehicle body structure of an automobile, as shown in Japanese Utility Model Laid-Open No. 61-53279, a spare tire holding hole is generally formed as a spare tire holding portion on the rear floor, and a spare tire holding hole is formed in the spare tire holding hole. Is to be accommodated. As a result, even if the tire in use is flat, it can be replaced with a spare tire on the spot.

[0003]

However, in the above-mentioned rear vehicle body structure, the rear floor is arranged in a substantially horizontal state,
A spare tire accommodation hole is to be formed in the rear floor in that state. Therefore, in order to ensure the formation of the spare tire accommodation hole, the rear floor must be extended from the rear seat (rear wheel axle) to the rear of the vehicle body relatively long. Inevitably, the length from the rear seat to the rear end of the vehicle body must be increased as an overhang. The present invention has been made in view of the above circumstances, and an object thereof is to provide a rear body structure of an automobile capable of suppressing an overhang on the rear side as much as possible.

[0004]

In order to achieve the above object, according to the present invention, in a rear body structure of an automobile in which a spare tire holding portion for holding a spare tire is formed on the rear floor, the rear floor is In the spare tire holding portion, the spare tire holding portion is arranged so as to be inclined toward the rear of the vehicle body, and the silencer is arranged below the spare tire holding portion. With the above configuration, since the rear floor is inclined so that it becomes higher toward the rear of the vehicle body in the spare tire holding portion, it is more likely that the rear tire rear portion will be located behind the vehicle body than when the spare tire holding portion is formed on the horizontal rear floor. The length to the edge can be shortened. Therefore, the overhang on the rear side can be suppressed as much as possible. Further, since the silencer is arranged below the spare tire holding portion, the silencer is arranged in a new space formed by the inclined arrangement of the rear floor, and the silencer arrangement position is increased. Will be Therefore, the interference between the silencer and the road surface can be prevented more than ever.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3, 1a and 1b are a pair of rear frames, and a rear floor 2 is disposed on the pair of rear frames 1a and 1b. The rear floor 2 has a height that increases stepwise from the front side of the vehicle body toward the rear side of the vehicle body. In this embodiment, three steps are provided,
A first floor 3, a second floor 4, a third floor 5, and a fourth floor 6 are configured in this order from the vehicle body front side to the vehicle body rear side.

As shown in FIG. 2, a spare tire holding hole 8 is formed in the rear floor 2 as a spare tire holding portion for holding the spare tire 7. The spare tire housing hole 8 is formed by indenting the spare tire housing hole 8 downward from approximately the center of the third floor 5 in the vehicle front-rear direction to the fourth floor 6.
Is inclined so that it becomes higher toward the rear of the vehicle body.

A seat 9 is disposed on the third floor 5, as shown in FIG. As is known, the seat 9 includes a seat cushion 10 and a seat back 11, which cover a part of the tire accommodation hole 8. The seat back 11 of the seat 9 is supported so as to be able to move up and down with respect to the seat cushion 10, and the seat cushion 10 is supported on the front portion of the third floor 5 via the swing member 12, whereby the seat cushion 11 is supported. As shown by the arrow in FIG. 2, the seat 9 can be positioned above the second floor 4 in a folded state.

As shown in FIG. 2, an opening 13 for taking in and taking out is formed in the fourth floor 6, and the opening 13 is covered with a spare tire cover 14. The spare tire cover 14 is rotatably supported on the rear end portion of the third floor via a hinge 15, and the spare tire cover 14 is provided when the seat back 11 is in a normal standing state. The seat back 11 and the seat cushion 10 can be opened when the seat back 11 and the seat cushion 10 are moved onto the second floor 4 as described above.

A cross member (suspension cross member) 16 is disposed below the front portion of the spare tire accommodation hole 8. The cross member 16 is the pair of rear frames 1
It straddles between a and 1b.

As shown in FIGS. 1 and 2, a fuel tank 17 is provided on the front side of the vehicle body with respect to the cross member 16. The fuel tank 17 is arranged along the lower surface of the second floor 4 using a support band 18,
The fuel tank 17 is located offset below the spare tire accommodation hole 8.

A silencer 19 is provided on the rear side of the vehicle body with respect to the cross member 16, as shown in FIGS. The silencer 19 is arranged below the spare tire accommodation hole 8 and in the rear side portion of the spare tire accommodation hole 8. The silencer 19 is brought close to the outer surface of the bottom portion of the spare tire accommodation hole 8. Has been. The silencer 19 is arranged horizontally. A downstream side exhaust pipe 20 is connected to the downstream side of the silencer 19, and the downstream side exhaust pipe 20 extends from the silencer 19 toward the rear of the vehicle body. On the other hand, silencer 19
The upstream exhaust pipe 21 is connected to the upstream side of
The upstream side exhaust pipe 21 extends from the silencer 19 to the front side of the vehicle body while bypassing the fuel tank 17.

The rear floor 2 and the rear frame 1a,
As shown in FIG. 2, a bumper 22 is provided on the rear side of 1b. The bumper 22 is arranged so as to cover the rear floor 2 and the rear end sides of the rear frames 1a, 1b, and the inner surface of the bumper 22 faces the space below the spare tire accommodation hole 8.

In the bumper 22, as shown in FIG.
A hot air exhaust hole 23 is formed. This hot air exhaust hole 23
Communicates with a space below the spare tire accommodation hole 8 and the outside, and the position thereof is an area that advances rearward of the vehicle body along the outer surface of the bottom of the spare tire accommodation hole 8. In the figure, 24 is a back door, 25 is a wheel arch, and 26 is a rear wheel.

Therefore, in the above structure, since the spare tire accommodation hole 8 is inclined so as to become higher toward the rear of the vehicle body, the seat 9 is provided as compared with the case where the spare tire accommodation hole 8 is arranged horizontally. From bumper 2
The length up to 2 can be shortened, and the overhang on the rear side can be suppressed as much as possible. Moreover, since the silencer 19 is arranged close to the rear side portion of the outer surface of the bottom of the spare tire housing hole 8, a new space formed by the inclined arrangement of the spare tire housing hole 8 is utilized. As a result, the height of the silencer 19 can be increased. Therefore, it is possible to more reliably prevent the road surface and the silencer 19 from interfering with each other during traveling.

Further, the spare tire 7 is arranged offset with respect to the fuel tank 17, so that the spare tire 7 can be prevented from hitting the fuel tank 17 even if a collision occurs from the rear of the vehicle body. You can do it.

Further, the silencer 19 emits hot air (in FIG. 2, hot air is shown by a plurality of arrows), but the bottom outer surface of the spare tire accommodation hole 8 sends the hot air to the hot air exhaust hole 23 in the bumper 22. I will guide you.
Therefore, it is possible to prevent heat from being accumulated below the spare tire accommodation hole 8.

Although the embodiments have been described above, the present invention includes the following. A hinge 15 for the spare tire cover 14 is provided at the front part of the opening of the spare tire housing hole 8, and the entire spare tire housing hole 8 is opened and closed by the spare tire cover 14. When the inner surface of the back door 24 faces the space below the spare tire 7, the hot air exhaust hole 23 should be formed in the back door 24.

[0018]

As described above, the present invention can provide a rear body structure of an automobile capable of preventing interference between the silencer and the road surface more than ever while suppressing the overhang on the rear side as much as possible.

[Brief description of drawings]

FIG. 1 is an explanatory view of a structure according to an embodiment of the present invention viewed from above.

FIG. 2 is a side view of FIG.

FIG. 3 is a diagram of FIG. 1 viewed from the rear side of the vehicle body.

[Explanation of symbols]

 2 Rear floor 7 Spare tire 8 Spare tire receiving hole 17 Fuel tank 19 Silencer 22 Bumper 23 Hot air exhaust hole

Claims (3)

[Claims] 1. A rear vehicle body structure for an automobile, wherein a spare tire holding portion for holding a spare tire is formed on a rear floor, wherein the rear floor is inclined so as to become higher toward the rear of the vehicle body in the spare tire holding portion. A rear vehicle body structure of an automobile, wherein a silencer is provided below the spare tire holding portion. 2. The fuel tank according to claim 1, wherein a fuel tank is disposed below the rear floor and on the vehicle body front side of the spare tire holding portion, and the fuel tank is offset downward with respect to the spare tire holding portion. Is located in the rear body structure of the automobile. 3. The rear part of the automobile according to claim 1, wherein a hot air exhaust hole is formed in a rear part of the vehicle body in a direction of a rearward direction of the vehicle body along a lower surface of the spare tire holding part. Body structure.