JPH07165119A - Car body structure - Google Patents

Abstract

PURPOSE:To improve the forward-collapse rigidity of a rear strut tower by forming a beam part of slope shape of a rear floor panel in a bracing body, and forming a closed section between the beam part and a rear side member to constitute a strongly framed part in the automobile lateral direction. CONSTITUTION:A beam part 7 of slope shape which is inclined in the automobile lateral direction toward the top of a rear strut tower 4 is formed in a bulged manner at the region corresponding to the side wall of the rear strut tower 4 of a rear floor panel 1. A flange 7a at the end part of the beam part 7 is abutted on the rear strut tower 4 and welded. This constitution allow the beam part 7 to be functional as the bracing member, and the beam part 7 forms the closed section between itself and a rear side member 5 to constitute the strongly framed part in the automobile lateral direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile body structure, and more particularly to a structure around a rear strut tower.

[0002]

2. Description of the Related Art Conventionally, many rear strut towers for automobiles are arranged so as to project on the upper surface of a substantially central portion of a rear wheel house inner, as disclosed in, for example, Japanese Utility Model Publication No. 1-111071. The upper end of the strut of the rear suspension is connected to and supported by the top of the rear strut tower.

[0003]

As described above, when the rear strut tower is projectingly arranged on the upper surface of the substantially central portion of the rear wheel house inner, the strut is placed in a substantially vertical state across the accelerator beam and the top of the rear strut tower. Will be installed.

In this case, the strut only receives the vertical input from the axle beam, and the buffering effect of the horizontal input cannot be expected.

In order to improve the suspension efficiency by allowing the strut to receive the vertical input and the horizontal input, the strut may be inclined in the inclining direction.
For that purpose, the rear strut tower must be provided on the side surface of the rear wheel house inner.

The rear wheel house inner is joined to the outer rear wheel house to form one of the strength skeletons at the rear of the vehicle body, but the rear wheel house inner alone is formed of one panel material. Therefore, it is not possible to maintain high surface rigidity at the side surface portion that is separated from the joint portion with the rear wheel house outer and has a relatively large area.

Therefore, if a rear strut tower is provided on the side surface of the rear wheel house inner, the input from the slat will be borne by the side surface of the rear wheel house inner having a low surface rigidity, and the inside of the rear strut tower will be covered. The fall rigidity becomes low.

Therefore, according to the present invention, the rear strut tower is provided on the side surface of the rear wheel house inner so that the strut can be tilted in the inclining direction to improve the suspension efficiency, and a dedicated reinforcing member is provided. Provided is a vehicle body structure capable of increasing the inward falling rigidity of a rear strut tower without using it.

[0009]

A rear side in which a rear strut tower is joined to a side surface of a rear wheel house inner, and lower edges of front, rear wall and side wall of the rear strut tower are joined to a lower surface of a rear floor panel. While being joined to the side edge of the member, a slope-shaped beam portion that is inclined in the vehicle width direction toward the top of the rear strut tower is bulged at a site corresponding to the side wall of the rear strut tower on the side of the rear floor panel. The peripheral edge portion of the beam portion is abutted and joined to the rear strut tower.

[0010]

[Function] The rear strut tower is provided on the side surface of the rear wheel house inner and tends to fall inward due to road surface input from the strut. However, the slope-shaped beam portion of the rear floor panel serves as a projecting member, and the beam portion Forms a closed cross-section with the rear side member to form a strength skeleton portion in the vehicle width direction, and thus sufficiently resists the inward leaning load of the rear strut tower and remarkably enhances the inward leaning rigidity of the rear strut tower. be able to.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIGS. 1 and 2, 1 is a rear floor panel, 2 is a rear wheel house inner joined to a side edge of the rear floor panel 1, and a notch 3 is formed from a lower edge in a substantially central portion of a side surface thereof. A rear strut tower 4 is joined so as to close the notch 3.

Rear side members 5, which are skeleton members in the front-rear direction of the vehicle body, are joined to the lower surfaces of both sides of the rear floor panel 1, and the front wall 4a of the rear strut tower 4 is
The lower edges of the rear wall 4b and the side wall 4c are joined to the side edges of the rear side member 5.

The lower edge of the rear wheel house inner 2 is also joined to the side edge of the rear side member 5 together with the side edge of the rear floor panel 1.

Further, on the lower surface of the rear floor panel 1, a cross member 6 which is a skeleton member in the vehicle width direction is joined and arranged on a line connecting the rear strut towers 4 on both sides, and an end portion of the cross member 6 is a rear side. The side surface of the member 5 is butted and joined.

A beam portion 7 having a slope shape which is inclined in the vehicle width direction toward the top portion 4d of the rear strut tower 4 is provided at a portion of the side portion of the rear floor panel 1 corresponding to the side wall 4c of the rear strut tower 4. It is formed by bulging, and the flange 7a at the end of the beam portion 7 is butted against the strut tower 4 and joined.

Here, the formation position of the rear strut tower 4 will be briefly described with reference to FIG. 3 in connection with the axle beam 10 and the Panhard rod 11.

The above-mentioned cross member 6 is provided at a position offset forward of the axle beam 10, and the Panard rod bracket 1 is attached to the cross member 6.
Two are arranged to be joined.

The Panhard rod bracket 12 is formed in a downward mountain shape which is biased to one side in the vehicle width direction.

The Panhard rod 11 is an axle beam 10.
On the front side of the Pannar rod bracket 12 and a mountain-shaped top that is biased to one side, and on the side opposite to this top, the front side of the axle beam 10 is connected via bearing members 13, respectively. Thus, the Panhard rod 11 is shortened so that the lower end of the strut 14 can be connected to the end of the axle beam 10 outside the trailing arm 15.

The strut tower 4 is provided on the side surface of the rear wheel house inner 2 coaxially with the cross member 6 provided with the Panhard rod bracket 12.
The strut 14 is connected and supported between the top portion 4d of the strut tower 4 and the front surface of the end portion of the axle beam 10 so that the strut 14 is inclined in the inclining direction without shortening the effective length, that is, on both sides. The struts 14 can be inclined so that the struts 14 have an inverted V shape when viewed from the rear, and the struts 14 are made to receive a vertical input and a horizontal input.

According to the structure of the above embodiment, since the rear strut tower 4 is provided on the side surface of the rear wheel house inner 2, the strut 14 receives the road surface input in the longitudinal direction and the lateral direction, and thus tends to fall inward. Becomes stronger.

However, the rear strut tower 4 is
The rear floor panel 1 is connected to a slope-shaped beam portion 7 that is formed to be inclined in the vehicle width direction, and this beam portion 7 serves as a tension member, and the beam portion 7 has a cross-sectional area with the rear side member 5. A large closed cross section is formed to form a strength skeleton portion in the vehicle width direction, the beam portion 7 is arranged linearly with the cross member 6, and the front and rear walls 4a of the rear strut tower 4 are Since the respective lower edges of the side wall 4c and the side wall 4c are joined to the rear side member 5, the beam portion 7, the cross member 6, and the rear side member 5 are formed.
By this, the inward falling load of the rear strut tower 4 can be distributed and borne, and the inner falling load can be sufficiently counteracted.
As a result, the inward falling rigidity of the rear strut tower 4 can be significantly increased.

[0024]

As described above, according to the present invention, by disposing the rear strut tower on the side surface of the rear wheel house inner, it is possible to dispose the strut in the inclining direction and improve the suspension efficiency. You can

Moreover, in this rear strut tower, a slope-shaped beam portion provided inclining in the vehicle width direction is connected to the side portion of the rear floor panel, the beam portion functions as a projecting member, and the rear strut tower is also provided. Since the lower edges of the front, rear, and side walls of the strut tower are connected to the side edges of the rear side member, the inward falling load of the rear strut tower is distributed and burdened by these beam parts, rear side members, etc. The load can be sufficiently counteracted, and therefore, there is a practically great effect that the inward falling rigidity of the rear strut tower can be remarkably enhanced without using a dedicated reinforcing material.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a schematic explanatory view showing an arrangement state of struts.

[Explanation of symbols]

 1 Rear floor panel 2 Rear wheel house inner 4 Rear strut tower 4a Front wall 4b Rear wall 4c Side wall 5 Rear side member 7 Beam part

Claims (1)

[Claims] 1. A side edge of a rear side member in which a rear strut tower is joined to a side surface of a rear wheel house inner, and lower edges of front, rear wall and side wall of the rear strut tower are joined to a lower surface of a rear floor panel. On the other hand, a slope-shaped beam portion that is inclined in the vehicle width direction toward the top of the rear strut tower is bulged at a portion of the side portion of the rear floor panel that corresponds to the side wall of the rear strut tower. A vehicle body structure characterized in that the peripheral edge of the end is abutted and joined to a rear strut tower.