JPS5836619Y2 - Automobile rear body structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of the rear body structure of an automobile.

Conventionally, for the rear body structure of an automobile, as shown in FIG. 1, gutter-shaped side members 3 are attached to the lower surface of the rear floor panel 2 on the inside of the left and right rear wheel houses 1, respectively. was forming.

For this reason, there is a problem in that the capacity of the fuel tank cannot be increased in order to secure a space for mounting a spare tire, and in order to pass the fuel pipe, a recess 4 must be formed in the side member 3, or a hole must be passed through the side member 3. A hole 5 may be bored, a leaf spring bracket 6 may be fixed or integrally formed on the side of the side member 3, or the mounting portion of the fuel tank 7 at the bottom of the side member 3 may be deepened. In addition, the exhaust pipe 10 that communicates with the muffler 9 must be piped across the side member 3. No, the pie 710
It was necessary to bend it several times in the front and back directions to attach it, which was cumbersome and troublesome.

The present invention was developed in view of the above-mentioned problems, and aims to reduce the weight of the car body by utilizing the rear wheels of the car as a strength member of the rear car body. The object of the present invention is to provide a rear body structure for an automobile that increases the space for mounting a fuel tank, a spare tire, etc.

The present invention will be described below with reference to illustrative embodiments.

The front ends of the left and right rear wheel houses 12 (one is omitted in the drawing) on the lower surface of the rear floor panel 11 forming the rear part A of the automobile body and the cross member 14 of the seat riser 13.
A rain hose 15 having an abbreviated shape is connected between the front end thereof and the cross member 14, and the rear end thereof connected to the rear wheel house 1.
Attach one longitudinal edge to the front end of rear floor panel 1.
A first box a is formed by fixing the other side edge to the side sill 16 on the lower surface of the rear floor panel 11, and a second rain hose 18 is connected between the rear end portions of the left and right rear wheel houses 12 on the lower surface of the rear floor panel 11 and the cross member 17. , the front end is attached to the rear end of the rear wheel house 12, the rear end is attached to the rear cross member 17, the longitudinal part 11 edge is attached to the lower surface of the rear floor panel 11, and the other side edge is attached to the side inner panel 19. They are fixed to form a second box b, and the first box a and second box b and the rear wheel house 12 form the front and rear beams of the rear part A of the vehicle body.

A leaf spring bracket 21 is fixed via an auxiliary rain hose 20 to the outer surface of the rain hose 18 forming the second box b on the inside of the vehicle body.

The front end of the leaf spring is attached by fixing a bracket 22 to the outer surface of the inside of the vehicle body of the first box a, as shown in FIG.

In addition, as shown in FIG. 11 as another embodiment of the present invention,
The second box b may be extended at the terminal end 1 of the rear part A of the vehicle body, and the end of the rear cross member 17 may be brought into contact with the side of the second box b.

Further, the shape of the cross member 14 of the seat riser 13 according to the present invention is such that the front part of the rear floor panel 11 is bent in its cross section, and both ends thereof are connected to the left and right side sills 16, as shown in FIG. It was formed into a beam shape, but
In addition, the rear end portion of the front floor panel 23 may be bent in front of the beam as shown in the opening in FIG. 9 to make it stronger as a double beam.

Further, according to the present invention, a reinforcing member 24 is fixed to the inner lower end of the rear wheel house 12 as shown in FIG. 10 to increase the strength of the beam, and the tip thereof is used as a stopper 25 for the leaf spring.

As mentioned above, the present invention has a box-like shape with an open bottom and has high torsional and bending rigidity, and has a first box and a second box at the front and rear of the rear wheel house, which serve as front and rear beams at the rear of the vehicle body. The conventionally used side members can be abolished, and therefore the space for mounting a fuel tank and spare tire under the floor or for piping an exhaust tube can be expanded.

Furthermore, since the first box and second box according to the present invention are smaller parts than conventional side members, not only is it easier to make molds and process the parts, but the weight can be significantly reduced. , its effects are great.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the main parts of the rear body of an automobile showing a state in which a conventional side member is attached, and FIG. The mouth is a partial perspective view of the side member, Figure 3 is a partial perspective view of the side member with integrally molded leaf spring bracket, Figure 4 is a partial perspective view of the side member showing the mounting of the fuel tank, and Figure 5 is a partial perspective view of the side member. 6 is a perspective view showing the piping state of a conventional exhaust pipe; FIG. 6 is a partially broken perspective view of the main parts showing the rear body structure of an automobile according to the present invention;
Figure 7 is a sectional view taken along the line I-I in Figure 6, and Figure 8 is a cross-sectional view taken along the line I-I in Figure 6.
-N line sectional view, Figure 9 A is Figure 6 ■-■ line sectional view, Figure 9
The figure opening is ■- in Fig. 6 showing another embodiment of the cross member.
FIG. 10 is a cross-sectional view taken along the line IV--■ in FIG. 6, and FIG. 11 is a partial perspective view showing another embodiment of the rear end of the second box. A is the rear of the vehicle, a is the first box, b is the second box,
11 is the rear floor panel, 12 is the rear wheel house, 1
3 is a seat riser, 14 is a cross member, 15 is a rain hose, 16 is a side sill, 17 is a rear cross member, 18 is a rain hose, 19 is an inner side panel,
20 is the auxiliary rain hose, 21.22 is the bracket, 2
3 is a front floor panel, 24 is a reinforcing member, and 25 is a stopper.

Claims (1)

[Scope of utility model registration request] An abbreviated rain hose is fixed to the lower surface of the rear floor panel between the front ends of the left and right rear wheel houses and a cross member of a part of the rear seat riser, and the rain hose and the front end of the rear wheel house cross with the rear floor panel. A first box is formed by the member and the side sill, and an abbreviated rain hose is fixed to the lower surface of the rear floor panel between the rear end portions of the left and right rear wheel houses and the rear cross member. A second box is formed by the rear end handler floor panel, the handler cross member and the side panel,
A rear body structure for an automobile, characterized in that the first box and the second box handle wheel house form a front and rear beam on the lower surface of the rear body.