JPH0971266A - Rear part body reinforcement structure of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the deformation of the upper side corner of a body, and to improve the torsional rigidity of the body. SOLUTION: In order to compose this rear part body reinforcement structure, a reinforcement 19 with about a U-shape cross section is connected to the outer side of a rear pillar inner panel 12 which is contacted to the outer side of a strut tower 18 at the rear part of an automobile, and composes a rear pillar 14 together with a rear fender panel 13. In this case, while the upper part of the reinforcement 19 is extended to the inner side in the car depth direction across the upper side corner C of the body, and connected to a roof panel 16, the end of the extended reinforcement 19 is connected to the rear inner panel 12.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, as a rear body reinforcing structure for an automobile of this type, there is one disclosed in Japanese Utility Model Laid-Open No. 63-122158. FIG. 5 shows a cross-sectional view of the conventional rear body reinforcing structure for an automobile. The rear pillar inner panel 2 and the rear fender panel 3 are joined to each other at their lower ends and front and rear ends to form rear pillars 4 positioned on both rear side portions of the vehicle body, respectively. The upper ends of the panels 3 are joined to the roof panel 6, respectively.

A strut tower portion 8 for supporting a rear suspension 7 is joined to the interior side of the rear pillar inner panel 2 and further to the outside of the rear pillar inner panel 2, the front and rear direction of the rear pillar inner panel 2 ( A reinforcement 9 having a substantially U-shaped cross section is joined so as to overlap the rear pillar inner panel 2 over substantially the entire area (in a direction perpendicular to the paper surface in FIG. 5). In this way, the closed cross section formed by the reinforcement 9 and the rear pillar inner panel 2 is circumscribed on the strut tower portion 8 to increase the rigidity against the input load from the rear suspension 7.

[0004]

However, in such a conventional structure, the closed cross section formed by the reinforcement 9 and the rear pillar inner panel 2 directly receives the input from the strut tower portion 8. However, the deformation of the upper corner portion of the vehicle body caused by the input from the strut tower 8 cannot be suppressed, and there is a problem that the vehicle body has a low rigidity against torsion and insufficient reinforcement.

The present invention has been made in view of the above problems, and provides a rear vehicle body reinforcing structure for an automobile capable of suppressing the deformation of the upper corner portion of the vehicle body and improving the torsional rigidity of the vehicle body. The purpose is to

[0006]

In order to achieve the above object, according to the invention of claim 1, a cross section is formed on the outer side of a rear pillar inner panel which is in contact with a strut tower portion of a rear portion of an automobile and constitutes a rear pillar together with a rear fender panel. In a car body reinforcement structure for a rear part of an automobile, which is formed by joining substantially U-shaped reinforcements, the upper part of the reinforcements extends inward in the vehicle width direction beyond the upper corners of the vehicle body and is joined to the roof panel. At the same time, the end of the extended reinforcement is joined to the rear pillar inner panel.

Input from the strut tower portion can be directly received by a closed cross section formed by a rear pillar inner panel and a reinforcement circumscribing the strut tower portion, and the upper portion of the reinforcement portion is an upper portion of the vehicle body. Since it extends to the inside of the vehicle width direction beyond the corner and is joined to the roof panel, deformation of the upper corner of the vehicle body is suppressed and the input from the strut tower is distributed to the roof panel, The torsional rigidity can be improved.

It is also possible to improve the crush strength of the roof panel. According to a second aspect of the present invention, in the vehicle body reinforcement structure for a rear portion of the first aspect of the invention, the rear end portion of the reinforcement is disposed along an edge portion of a rear window opening of the vehicle body, and a rear fender panel is provided. It is characterized by being joined together with the rear pillar inner panel.

As a result, the edge portion of the rear window opening is reinforced and the supporting rigidity of the rear window glass can be improved. According to a third aspect of the invention, in the vehicle body reinforcing structure for a rear portion of the vehicle according to the first or second aspect, the front end portion of the reinforcement is bent toward the interior side at a middle position of the rear pillar inner panel in the vehicle front-rear direction. It is characterized by being joined to the rear pillar inner panel.

As a result, the front end portion of the reinforcement is bent toward the inside of the vehicle, that is, the surface extending in the vehicle width direction, at a middle position in the vehicle front-rear direction in the rear pillar constituted by the rear pillar inner panel and the rear fender panel. Since it exists, the strength of the rear pillar in the vehicle width direction is improved.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a perspective view thereof, FIG. 3 is a view taken in the direction of arrow B of FIG. 2, and FIG. 4 is a side view thereof. 2, FIG. 3, and FIG.
For the sake of explanation, the rear fender panel, roof panel, etc. are omitted.

In the figure, reference numeral 14 denotes rear pillars 14 positioned on both sides of the rear of the vehicle body.
The rear pillar inner panel 12 and the rear fender panel 13 are joined together at their lower ends and front and rear ends. In this embodiment, the rear pillar inner panel 1
2 is integrally formed with a wheel house outer 12c that extends to the outside of the vehicle compartment at its lower part, and the lower end of the wheel house outer 12c is joined to the rear fender panel 13, but the rear pillar inner panel is separate from the wheel house outer. In that case, the lower end of the rear pillar inner panel is joined to the wheel house outer.

A strut tower portion 18 for supporting the rear suspension 7 is joined to the vehicle interior side of the rear pillar inner panel 12 and the rear pillar inner panel 12 is formed.
A reinforcement 19 having a U-shaped cross section is joined to the outside of the vehicle so as to face the strut tower portion 18 with the rear pillar inner panel 12 interposed therebetween. That is, the lower end flange 19a of the reinforcement 19
Is spot-welded together with the rear pillar inner panel 12 (or the wheel house outer 12c), and the front end portion of the reinforcement 19 has a rear pillar inner panel 12
At a middle position in the vehicle body front-rear direction, a front wall 19e that is bent toward the interior and extends in the vehicle width direction is formed, and the front end flange 19b is spot-welded to the rear pillar inner panel 12. Further, the rear end flange 19c of the reinforcement 19 overlaps with the rear end flange 12a of the rear pillar inner panel 12, and is sandwiched between the rear pillar inner panel 12 and the rear fender panel 13 and spot welded together, for rear window use. It constitutes the edge of the opening 20. Further, the upper portion of the reinforcement 19 extends inward in the vehicle width direction beyond the upper corner C of the vehicle body and overlaps the side end flange 16a of the roof panel 16 and the upper end flange 13a of the rear fender panel 13 together. The upper end of the reinforcement 19 which has been spot-welded and further extended is bent toward the rear pillar inner panel 12 so that the upper flange 1
9d is spot-welded to the rear pillar inner panel 12.

The upper end of the rear pillar inner panel 12 is joined to the rear roof rail 15. Roof panel 1
The roof molding 21 is embedded on the side edge flange 16a of the No. 6 side. As a procedure of assembling each member, first, the reinforcement 19 is attached to the rear pillar inner panel 12, and then the rear fender panel 13 is attached to the rear pillar inner panel 12. Then, the upper portion of the reinforcement 19 is spot-welded together with the upper end flange 13a of the rear fender panel 13 and the side end flange 16a of the roof panel 16. At this time, the spot gun is inserted through the opening 12b formed in the upper portion of the rear pillar inner panel 12. Then, the upper end of the rear pillar inner panel 12 and the side end of the rear roof rail 15 are spot-welded.
At this time, the opening 1 formed in the rear roof rail 15
Insert the spot gun from 5a.

In the rear body reinforcing structure constructed as described above, the input from the strut tower portion 8 is directly applied to the closed cross section formed by the rear pillar inner panel 12 and the reinforcement 19 which are in contact with the strut tower portion 8. Since the upper portion of the reinforcement 19 is extended to the inside of the vehicle width direction beyond the upper corner portion C of the vehicle body and joined to the roof panel 16, the upper corner portion C of the vehicle body can be received. By suppressing the deformation and distributing the input from the strut tower portion 8 to the roof panel 16, the torsional rigidity of the vehicle body can be improved. Also, the crush strength of the roof panel 16 can be improved.

Further, the rear end flange 19c of the reinforcement 19 is arranged along the edge of the rear window opening 20 of the vehicle body and is joined together with the rear fender panel 13 and the rear pillar inner panel 12, so that it is used for the rear window. The edge of the opening 20 is reinforced, and the support rigidity of the rear window glass can be improved. Further, since the front end portion of the reinforcement 19 is bent at a middle position of the rear pillar inner panel 12 in the vehicle front-rear direction, and its front end flange 19b is joined to the rear pillar inner panel 12, the rear pillar 14 is centered in the vehicle front-rear direction. Since the front wall 19e extending substantially in the vehicle width direction of the reinforcement 19 is present at a certain position, the strength of the rear pillar 14 in the vehicle width direction is improved.

[0017]

As described above, according to the invention of claim 1, the input from the strut tower portion is a closed cross section formed by the rear pillar inner panel circumscribing the strut tower portion and the reinforcement. Further, the upper part of the reinforcement is extended inward in the vehicle width direction beyond the upper corner part of the vehicle body and joined to the roof panel, so that deformation of the upper corner part of the vehicle body is suppressed, By distributing the input from the strut tower to the roof panel, the torsional rigidity of the vehicle body can be improved. Also, the crush strength of the roof panel can be improved.

According to the second aspect of the present invention, the edge portion of the rear window opening is reinforced, and the supporting rigidity of the rear window glass can be improved. According to the third aspect of the present invention, the front end of the reinforcement is bent toward the interior at the middle position in the vehicle front-rear direction in the rear pillar having a closed cross section including the rear pillar inner panel and the rear fender panel. Since the surface extending in the direction is formed, the strength of the rear pillar in the vehicle width direction can be improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention, which is a cross-sectional view taken along the line AA of FIG.

FIG. 2 is a perspective view of the rear vehicle body reinforcing structure of FIG. 1 in which a rear fender panel, a roof panel, etc. are omitted for the sake of explanation.

FIG. 3 is a view taken in the direction of arrow B in FIG. 2 in which a rear fender panel, a roof panel, etc. are omitted for the sake of explanation.

FIG. 4 is a side view of the rear vehicle body reinforcing structure of FIG. 1 in which a rear fender panel, a roof panel and the like are omitted for the sake of explanation.

FIG. 5 is a cross-sectional view showing a conventional rear vehicle body reinforcing structure for an automobile.

[Explanation of symbols]

 12 rear pillar inner panel 12a rear end flange 13 rear fender panel 13a upper end flange 14 rear pillar 16 roof panel 16a side end flange 18 strut tower portion 19 reinforcement 19a lower end flange 19b front end flange 19c rear end flange 19d upper end flange 20 rear window opening

Claims (3)

[Claims] 1. A vehicle body reinforcement structure for a rear portion of a vehicle, wherein a reinforcement having a substantially U-shaped cross section is joined to the outer side of a rear pillar inner panel which is circumscribed to a strut tower portion of a rear portion of the vehicle and constitutes a rear pillar together with a rear fender panel. , The upper part of the reinforcement extends beyond the upper corner of the vehicle body inward in the vehicle width direction and is joined to the roof panel, and the extended end of the reinforcement is joined to the rear pillar inner panel. A rear body reinforcement structure for an automobile, which is characterized in that 2. The rear end of the reinforcement is
It is arranged along the edge of the rear window opening of the vehicle body,
The rear body reinforcing structure for an automobile according to claim 1, wherein the rear fender panel and the rear pillar inner panel are joined together. 3. The front end portion of the reinforcement is
3. The rear vehicle body reinforcing structure for an automobile according to claim 1, wherein the rear pillar inner panel is bent toward the interior at a middle position in the vehicle front-rear direction and joined to the rear pillar inner panel.