KR19980059637A - Rear undercarriage of the car - Google Patents

Abstract

The present invention discloses a rear undercarriage structure of a motor vehicle. According to the present invention, the depression 11 is formed in the rear floor panel 1 between the fuel tank 3 is installed at the bottom and the bottom structure of the rear seat and the bottom structure of the trunk. It is characterized in that the canister (5) for receiving the gas in the fuel tank (3) is mounted on the bottom of the portion (11).

Description

Rear undercarriage of the car

The present invention relates to a rear lower vehicle body structure, and more particularly, to a structure of a rear vehicle body that forms the bottom structure of the lower rear seat and the trunk.

1 shows a conventional rear body structure.

As shown, the rear floor panel 1 connected to the front floor panel (not shown) is divided into a part forming the bottom of the rear seat and a part of the bottom of the trunk, and in particular, the part of the bottom of the trunk is the lower part of the rear seat. It protrudes downward to be lower. The spare tire 2 is provided in the rear floor panel 1 of this protruding part. In addition, a lower portion of the rear floor panel 1, which is the lower portion of the spare tire 2, is equipped with a silencer 10 for reducing noise in the exhaust gas.

Further, a fuel tank 3 is located under the rear floor panel 1 in the lower rear seat, and a bracket 4 is provided below the fuel tank 3. In the lower part of the rear floor panel 1 between the fuel tank 3 and the spare tire 2, the canister 5 which accommodates gas is provided so that the pressure in the fuel tank 3 may not raise above a fixed level. This canister 5 is supported by the chassis cross member 6 from the bottom.

In addition, a body cross member 7, which is a lateral rigid reinforcement of the vehicle body, is provided below the rear floor panel 1 between the fuel tank 3 and the canister 5, and a bracket is provided on the body cross member 7. The welding nut 9 provided at the rear end of the (4) is fastened by the bolt 8 to be fixed.

However, in the conventional rear lower body structure, since the canister 5 is located below the rear floor panel 1 and directly abuts between the spare tire 2 and the rear floor panel 1, In the event of a collision, the spare tire 2, the silencer 10, and the rear floor panel 1 are pushed forward, and are likely to collide with the canister 5.

However, since the canister 5 is in a state in which the gas in the fuel tank 3 is accommodated and the high pressure is always formed, as described above, it is very likely to explode when subjected to a strong shock, and thus the rear collision as in the prior art. When the canister 5 and other structures strongly collide with each other, there is a problem that an explosion occurs.

Therefore, the present invention has been made to solve the problems caused by the conventional rear lower body structure, so that other structures do not collide with the canister during the rear collision, which can prevent the explosion accident of the canister and the vehicle in advance. It is an object to provide a rear undercarriage structure of an automobile.

1 is a cross-sectional view showing a conventional rear lower vehicle body structure

2 is a cross-sectional view showing a rear lower vehicle body structure according to the present invention.

* Explanation of symbols for main parts of the drawings

1: rear floor panel 2: spare tire

3: fuel tank 4: bracket

5: canister 11: depression

71: body cross member

In order to achieve the above object, the present invention, the fuel tank is installed in the lower portion of the rear seat panel between the portion forming the bottom structure of the rear seat and the bottom structure of the trunk is formed in the recess, the bottom surface of the depression And a canister for receiving gas in the fuel tank.

The fuel tank is supported at the bottom by a bracket, one end of the body cross member is fixed to the end of the bracket by bolts and nuts, one end of the body cross member is fixed to the lower portion of the depression, the other end is rear It is characterized in that fixed to the bottom of the floor panel.

According to the configuration of the present invention described above, since the canister is installed on the depression of the rear floor panel, it is suppressed from colliding with other structures during the rear collision, thereby reducing the risk of explosion.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

EXAMPLE

2 is a cross-sectional view showing a rear lower vehicle body structure according to the present invention.

For reference, in the description of the configuration of the present embodiment, the same parts as in the prior art described at the beginning of the specification are omitted and repeated descriptions are mainly described in order to avoid duplication of description. use.

As shown in the drawing, the rear floor panel 1 is largely composed of a part forming the rear seat substructure and a part forming the bottom structure of the trunk. A fuel tank 3 is mounted to a lower portion of the rear flow panel 1 constituting the rear seat substructure, and the fuel tank 3 is supported by the bracket 4 from the bottom. A spare tire 2 is installed on the rear floor panel 1 forming the bottom structure of the trunk, and a silencer 10 for reducing noise of the exhaust gas is mounted below the rear tire.

In addition, a depression 11 is formed in the rear floor panel 1 between the portion forming the rear seat substructure and the portion forming the bottom structure of the trunk. One end of the body cross member 71, which is a lateral rigid reinforcement of the vehicle body, is welded to the lower part of the depression 11, and the other end of the body cross member 71 is also welded and fixed to the lower part of the rear floor panel 1. One end of the bracket 10 is fixed to one end of the body cross member 71 by fastening the bolt 8 and the welding nut 9.

On the bottom of the depression 11 is mounted a canister 5 in which gas in the fuel tank 3 is received. That is, in the present invention, the canister 5 is not installed below the rear floor panel 1, but is installed above.

Here, reference numeral 6 denotes a chassis cross member.

With the above configuration, the spare tire 2 is pushed forward when the rear collision occurs, and since the canister 5 is installed in the recess 11, a direct collision with the spare tire 2 is prevented, and the impact thereof is also prevented. The energy is also relaxed by the body cross member 71 so that a strong impact is not transmitted to the canister 5.

As described above, according to the present invention, since the canister 5 is installed on the recessed portion 11 of the rear floor panel 1, the canister 5 collides with other structures during the rear collision, thus preventing the explosion. Can be prevented.

On the other hand, the present invention is not limited to the above-described specific preferred embodiments, and various changes can be made by those skilled in the art without departing from the gist of the invention claimed in the claims. will be.

Claims (2)

The fuel tank is installed at the lower part, and a recess is formed in the rear floor panel between the bottom structure of the rear seat and the bottom structure of the trunk, and a canister for receiving gas in the fuel tank is mounted on the bottom of the recess. A rear undercarriage structure of an automobile. The fuel tank of claim 1, wherein the fuel tank is supported at the bottom by a bracket, and one end of the body cross member is fixed to the end of the bracket by bolts and nuts, and one end of the body cross member is located below the depression. The rear lower body structure of the vehicle, wherein the other end is fixed to the lower portion of the rear floor panel.