JPH07165123A - Automotive body structure - Google Patents

Abstract

PURPOSE:To improve the torsional rigidity by increasing the rigidity of the circumferential edge of an opening part to communicate a vehicle body to a trunk room by a reinforcing frame, and connecting a cross member to the reinforcing frame through a lower wall of a circumferential wall part of the reinforcing frame to increase the rigidity of the cross member. CONSTITUTION:A reinforcing frame 20 is fixed to the front surface of the circumferential edge of an opening part 4 to communicate a trunk room to a cabin to be surrounded by a front edge part of a rear parcel panel 1, a side edge part of a rear parcel side 2, and a rising wall 3c of the stepped part of the boundary between a rear seat loading part 3a of a rear floor panel 3 and a trunk floor 3b. An opening part 21 is provided at the center part of this reinforcing frame 20. A circumferential wall part 22 is folded rearward from the lower edge of this opening part 21 to both side edges, and a side wall 22b together with a front edge flange 10a of a cross member 10 is fixed to the trunk floor 3b by bolts and nuts 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body of an automobile, and more particularly to a structure around a rear parcel panel at a rear portion of the vehicle body.

[0002]

2. Description of the Related Art FIGS. 6 and 7 show a structure around a rear parcel panel of a conventional automobile. 1 is a rear parcel panel, 2 is a rear parcel side joined to both sides of a rear parcel panel 1, and 3 is a rear floor. A panel is provided with a rear seat mounting portion 3a for mounting and fixing a seat cushion of a rear seat (not shown) and a trunk floor 3b formed one step higher than the rear seat mounting portion 3a.

Reference numeral 4 denotes an opening surrounded by the front edge of the rear parcel panel 1, the side edge of the rear parcel side 2, and the rising wall 3c of the stepped portion of the rear floor panel 3, and the opening depending on the specifications. 4, the so-called trunk-through type specification that allows the passenger compartment and the trunk room to communicate with each other by moving the seat back of the rear seat (not shown) forward, and the front surface of the peripheral edge of the opening 4, that is, the rear parcel. Front edge of panel 1, side edge of rear parcel side 2, and rising wall 3 of rear floor panel 3.
Seat back support panel 5 to bolts and nuts 6
There is a specification in which the opening 4 is closed more tightly.

Reference numeral 7 is a rear wheel house inner, 8 is a rear strut tower which is joined to a side surface of the rear wheel house inner 7 and a trunk floor 3b to support a shock absorber of a rear suspension (not shown), and 9 is a rear floor panel. 3 shows a rear side member of the strength member in the vehicle front-rear direction, which is joined to the lower surface of 3 along both sides.

On the lower surface of the trunk floor 3b, on the line connecting the rear strut towers 8 on both sides, a cross member 10 which is a strength member in the vehicle width direction is joined so as to straddle rear side members 9 on both sides so that the floor strength is increased. And the lower bracket 25 of the rear suspension is connected and supported by joining the link brackets 11.

This similar structure can be obtained, for example, from Japanese Utility Model Laid-Open No. 61-16.
It is disclosed in Japanese Patent No. 3780.

[0007]

The cross member 10 is joined and arranged on the lower surface of the trunk floor 3b so as to straddle the rear side members 9 on both sides, so that the floor strength is increased. Since a torsion load is applied from the lower link 25 of the vehicle through the link bracket 11, it is difficult to sufficiently secure the torsional rigidity of the rear portion of the vehicle body. Particularly, in the trunk-through type, the opening 4 is left open. It cannot be denied that the torsional rigidity of the rear part of the vehicle body decreases.

Further, in the type in which the opening 4 is closed by the seat back support panel 5, compared with the trunk through type, although the torsional rigidity of the rear part of the vehicle body is increased, the seat back support panel 5 is provided with the cross member 10. Since it does not have a coupling relationship with, it does not contribute to the improvement of the rigidity of the cross member 10, and therefore the improvement of the torsional rigidity of the rear portion of the vehicle body cannot be expected so much.

Therefore, according to the present invention, the rigidity of the peripheral edge of the opening communicating between the vehicle compartment and the trunk room can be enhanced, and the rigidity of the cross member joined to the lower surface of the trunk floor can be enhanced, and the torsional rigidity of the entire rear portion of the vehicle body can be improved. The present invention provides a vehicle body structure that can be further enhanced.

[0010]

According to a first aspect of the present invention, the front edge portion of the rear parcel panel, the side edge portion of the rear parcel side, the rear seat mounting portion of the rear floor panel, and the trunk floor are step-shaped. A reinforcing frame having an opening formed in the central portion is joined to the front surface of the peripheral edge of the opening which is surrounded by the rising wall of the stepped portion and which communicates the vehicle interior and the trunk rotome. Form the peripheral wall portion from the lower edge to both side edges with facing at the rear,
The lower wall of the peripheral wall portion is superposed on the trunk floor and is joined to the trunk floor together with a cross member joined to the lower surface thereof.

According to a second aspect of the present invention, the side wall of the peripheral portion is superposed on the side surface of the rear strut tower and is joined to the rear strut tower.

[0012]

According to the first aspect of the present invention, the rigidity of the peripheral edge of the opening communicating between the vehicle compartment and the luggage compartment is enhanced by the reinforcing frame, and the cross member is reinforced by the lower wall of the peripheral wall portion of the reinforcing frame. Since it is connected to the frame, the rigidity of the cross member is also increased, and thus the torsional rigidity of the entire rear portion of the vehicle body is increased.

According to the second aspect of the present invention, since the side wall of the peripheral wall portion of the reinforcing frame is connected to the side surface of the rear strut tower, the rigidity of the peripheral edge of the opening communicating the passenger compartment and the trunk room and the rigidity of the cross member are further improved. At the same time, the strut tower's inward falling rigidity is increased, and the torsional rigidity of the entire rear part of the vehicle body is further increased.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings by attaching the same reference numerals to the same parts as those in the conventional structure.

1 and 2, the rear parcel panel 1
Of the rear parcel side 2, which is joined to both sides of the rear parcel panel 1, and the rising wall 3c at the step between the rear seat mounting portion 3a of the rear floor panel 3 and the trunk floor 3b. On the front surface of the peripheral edge of the opening 4 which is surrounded by and connects the vehicle compartment and the trunk room,
A reinforcing frame 20 having an opening 21 formed in the center is fixed by bolts and nuts 6.

In this embodiment, the reinforcing frame 20 is formed by bending a peripheral wall portion 22 rearward from the lower edge of the opening portion 21 to both side edges, and the side wall 22 of the peripheral wall portion 22.
b is abutted on the side surface of the rear strut tower 8 joined to the side surface of the rear wheel house inner 7 and the trunk floor 3b, and the lower wall 22a of the peripheral wall portion 22 is superposed on the trunk floor 3b, and both sides are formed on the lower surface thereof. The bolts and nuts 12 are fixed to the trunk floor 3b together with the front edge flange 10a of the cross member 10 which is joined across the rear side members 9 on both sides on the line connecting the strut towers.

As described above, the reinforcing frame 20 has the frame rigidity enhanced by forming the peripheral wall portion 22.
As shown in FIG. 4, when the flange 23 is bent and formed on each side edge of the bottom wall 22a and the side wall 22b, the frame rigidity can be further enhanced.

According to the structure of the above embodiment, since the reinforcing frame 20 is connected to the peripheral edge of the opening 4 that communicates the passenger compartment and the trunk, the opening 21 of the reinforcing frame 20 remains open. Even in the case of the trunk through type specification, the rigidity of the peripheral edge of the opening 4 can be enhanced, and the lower wall 22a of the peripheral wall portion 22 of the reinforcing frame 20 is overlapped with the trunk floor 3b to form a cross member on the lower surface thereof. Since it is connected to the trunk floor 3b together with the front edge flange 10a of 10, the rigidity of the cross member 10 can be increased.

The input of the lower link 25 of the rear suspension acting on the cross member 10 via the link bracket 11 as well as the twisting load of the rear portion of the vehicle body during traveling of the vehicle are taken into consideration by the cross member 10 and the reinforcing frame 20.
Since it is possible to distribute the load to the entire rear body structure around the vehicle body, it is possible to remarkably increase the torsional rigidity of the entire rear body part.

Further, in this embodiment, since the side wall 22b of the peripheral wall portion 22 of the reinforcing frame 20 is in contact with the side surface of the rear strut tower 8, the rigidity of the rear strut tower 8 can be increased.

A seat back support panel 5 (see FIG. 7) is superposed on the front surface of the reinforcing frame 20, and bolts and nuts 6 are fixed to the front surface of the peripheral edge of the opening 4 together with the seat back support panel 5 to form a reinforcing frame. Needless to say, when the specification is such that the opening 21 of the 20 is closed, the torsional rigidity of the entire rear portion of the vehicle body can be further enhanced.

In the embodiment shown in FIG. 4, the reinforcing frame 20
A flange 23 is formed in series on the lower wall 22a and the side wall 22b of the peripheral wall portion 22 of FIG. 3, but the flange up amount is slightly increased so that only the lower wall 22a extends over the side wall 22b as shown in FIG. The flange 23 may be provided.

Further, in the embodiment shown in FIG. 3, the side wall 22b of the peripheral edge portion 22 is superposed on the side surface of the rear strut tower 8 and fixed to the rear strut tower 8 by the bolts and nuts 12. I am doing it.

Therefore, according to this embodiment, in addition to the effect of the above embodiment, the rigidity of the peripheral edge of the opening 4 and the rigidity of the cross member 10 can be further enhanced, and the reinforcing frame 2
Since the load can be directly distributed from 0 to the rear strut tower 8 and the rear wheel house inner 7, the torsional rigidity of the entire rear portion of the vehicle body can be further enhanced.

FIG. 5 shows a further different example of the reinforcing frame 20. In this embodiment, the reinforcing frame 20 is divided into a pair of left and right side portions 20A, an upper side center portion 20B and a lower side center portion 20C. With this configuration, the split frame can improve the moldability and assembling property of the reinforcing frame 20.

In some cases, the pair of side edges 20
It is possible to use only A and 20A to improve the rigidity of the peripheral portion of the opening 4 and the rigidity of the cross member 10.

Further, in any of the above-mentioned embodiments, the peripheral wall portion 2 extends from the lower edge of the opening 21 of the reinforcing frame 20 to the both side edges.
Although the case where 2 is provided is shown, it goes without saying that the peripheral wall portion 22 may be provided at the entire peripheral edge of the opening portion 21 so as to increase the frame rigidity.

[0028]

As described above, according to the present invention, even in the case of the trunk-through type specification, the rigidity is increased by the peripheral reinforcing frame of the opening that communicates between the vehicle compartment and the trunk room. Since the lower wall of the peripheral wall portion is joined to the trunk floor together with the cross member on the lower surface of the trunk floor to increase the rigidity of the cross member, the torsional rigidity of the entire rear portion of the vehicle body can be significantly increased.

Further, by overlapping the side wall of the peripheral wall portion with the side surface of the rear strut tower and connecting the same to the strut tower, the rigidity of the peripheral edge of the opening and the rigidity of the cross member can be further enhanced, and the rear part of the vehicle body can be improved. The torsional load can be directly distributed from the reinforcing frame to the rear strut tower and rear wheel house inner,
Moreover, since the inward tilting rigidity of the rear strut tower can be increased, the torsional rigidity of the entire rear portion of the vehicle body can be further increased.

[Brief description of drawings]

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

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

FIG. 3 is an exploded perspective view showing a second embodiment of the present invention.

FIG. 4 is a perspective view showing another example of the reinforcing frame.

FIG. 5 is a perspective view showing still another example of the reinforcing frame.

FIG. 6 is an exploded perspective view showing a conventional structure.

7 is a sectional view taken along the line BB of FIG.

[Explanation of symbols]

 1 Rear parcel panel 2 Rear parcel side 3 Rear floor panel 3a Rear seat placement part 3b Trunk floor 3c Standing wall 4 Opening that connects the vehicle compartment and trunk room 8 Rear strut tower 10 Cross member 20 Reinforcement frame 21 Reinforcement frame opening 22 Circumferential wall Part 22a Lower wall of peripheral wall 22b Side wall of peripheral wall

Claims (2)

[Claims] 1. A vehicle surrounded by a front edge portion of a rear parcel panel, a side edge portion of a rear parcel side, and a rising wall of a step portion formed by step forming a rear seat mounting portion of a rear floor panel and a trunk floor. A reinforcing frame having an opening formed in a central portion is coupled to a front surface of a peripheral edge of the opening communicating with the chamber and the trunk tome, and a peripheral wall portion extending from at least a lower edge to both side edges of the opening of the reinforcing frame. Is formed rearward, the lower wall of the peripheral wall portion is superposed on the trunk floor, and the trunk floor is joined to the trunk floor together with a cross member joined to the lower surface thereof. 2. The vehicle body structure according to claim 1, wherein the side wall of the peripheral wall portion is superposed on the side surface of the rear strut tower and is joined to the rear strut tower.