JPH07309252A - Pear car body structure of automobile - Google Patents

Abstract

PURPOSE:To disperse a load to be burdened so as to improve the rigidity of joining by joining an upper part of a rear damper stiffener with a combined part of a roof panel and an outside panel integrally and joining an upper extended end to a rear roof rail integrally. CONSTITUTION:A rear pillar part 1 of a rear car body is constituted such that a rear damper stiffener 4 is provided between an outside panel 2 of smoothed shape and an inside panel 3 of projection and depression shape and lower ends 2a, 3a, 4a, of them are mutually joined at a damper mounting part of a wheel house. In this case, the rear damper stiffener 4 joins an extended portion 4c on the side of its center integrally by overlapping it on an outer horizontal section 7c of a rear roof rail 7 and a tip 3b of the inside panel 3 and joins a tip 4e integrally by overlapping it on an inner horizontal section 7b of the rear roof rail 7. Consequently, it is possible to disperse load to be burdened by the rear damper stiffener 4 and improve rigidity of the car body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear body structure of an automobile in the upper peripheral portion of a rear pillar.

[0002]

2. Description of the Related Art In a conventional rear vehicle body structure shown in FIGS. 5 to 8, a rear pillar portion includes an outside panel 01, a rear inside panel 02, and a rear damper stiffener interposed between the panels 01 and 02. The lower ends of the panels 01 and 02 and the rear damper stiffener 03 are joined to each other by spot welding to a damper mounting portion of a wheel house (not shown) in a state of being overlapped with each other.

Further, as shown in FIG. 6, the upper end portion 01a of the outside panel 01 is bent downward and then the end portions thereof are folded back at a substantially right angle, and the left and right end portions 04a of the roof panel 04 are also folded. , The upper end 03a of the rear damper stiffener 03 in a state where the end portions are further bent back at a substantially right angle after being bent downward, and the respective upper end portions 01a and the left and right end portions 04a are overlapped with each other. Are joined together by spot welding.

Further, the rear roof rail supporting the rear end of the roof panel 04 and oriented in the vehicle width direction is formed in a hollow shape in which the front and rear edges of the rear roof rail upper 05 and the rear roof rail lower 06 are integrally joined to each other. The upper end 02a of the rear inside panel 02 and the upper end 03b of the rear damper stiffener 03 are overlapped with each other, and the left and right end portions 06a of the rear roof rail lower 06 are further overlapped with each other. And both left and right ends 06
a is integrally joined to each other by spot welding.

[0005]

In the rear body structure shown in FIGS. 5 to 8, the left and right end portions of the rear roof rail lower 06 are formed.
Since 06a is integrally joined only at one position where the upper end 02a of the rear inside panel 02 and the upper end 03b of the rear damper stiffener 03 are joined together, the rigidity of this joint is low.

Further, in order to oppose the overlapping portion of the upper end 02a of the rear inside panel 02 having a relatively high rigidity and the upper end 03b of the rear damper stiffener 03, the rear roof rail is not sufficient with one rear roof rail lower 06, Above the roof rail lower 06, the rear roof rail upper
It was necessary to dispose the 05 together and form the roof rail in the middle of the hollow, making it difficult to simplify the vehicle body structure and reduce the weight of the vehicle body.

[0007]

SUMMARY OF THE INVENTION The present invention relates to an improvement in the rear body structure of an automobile which overcomes the above problems, and relates to a rear damper stiffener interposed between an outside panel and an inside panel of a rear pillar portion. In the rear vehicle body structure in which the lower end of is joined to the damper mounting portion of the wheel house, the upper portion of the rear damper stiffener is located above the inside panel and is integrally formed in the joint recess of the roof panel and the outside panel. The rear damper stiffener, which is joined to the rear roof rail and the inside panel, is located closer to the center of the vehicle width than the joint, and the upper extension end of the rear damper stiffener extending from the joint to the center of the vehicle width is It is characterized by being integrally joined to the rear roof rail.

Since the present invention is configured as described above, since the joint portion between the rear pillar portion and the rear roof rail is dispersed in two places in the vehicle width direction, the rear pillar portion and the rear roof rail are connected. The rigidity of the joint is significantly increased.

Further, in the present invention, there are two joints between the rear pillar portion and the rear roof rail, and the load applied to the joints is dispersed and reduced. Therefore, the rear roof rail for increasing the rigidity of the rear roof rails. The upper is not required and the thickness of the rear roof rail is thin, which makes it possible to reduce the weight of the vehicle body.

As described above, according to the present invention, it is possible to simultaneously improve the rigidity of the vehicle body and reduce the weight of the vehicle body.

[0011]

EXAMPLES Examples of the present invention applied to a passenger car will be described below with reference to FIGS. 1 to 4.

As shown in FIGS. 2 and 4, the rear pillar portion 1 of the rear vehicle body has an outside panel 2 formed in a smooth shape and has a required strength and rigidity. The inside panel 3 has an uneven surface shape suitable for mounting components, and both outside panels 2 and a rear damper stiffener 4 interposed between the inside panel 3 and the outside panel 2, inside panel 3 and The lower end portions 2a, 3a, 4a of the rear damper stiffener 4 are overlapped with each other,
They are integrally joined to each other by spot welding or bolts and nuts, and are also integrally joined to a damper mounting portion of a wheel house (not shown).

Further, as shown in FIG. 2, the upper end portion 2b of the outside panel 2 is bent downward at a substantially right angle, then folded back in a substantially horizontal direction, and further bent downward at a substantially right angle. Is folded back in a substantially horizontal direction, and the horizontal end portion thereof is brought into contact with the substantially horizontal portion 4b of the rear damper stiffener 4, and the left and right end portions 5a (the right side in FIG. 2) of the roof panel 5 formed in a smooth shape. The left end portion is shown) is inclined downward and then folded back in a substantially horizontal direction, further bent downward at a substantially right angle, and then folded back again in a substantially horizontal direction. Outside panel 2
The upper end portion 2a of the outside panel 2 and the roof of the outside panel 2 are integrally joined by spot welding 10 as shown in FIG. Roof groove 6 with left and right end portions 5a of panel 5
Is configured.

Further, as shown in FIG. 2, an extension portion 4c extending from the horizontal portion 4b of the rear damper stiffener 4 toward the center side in the vehicle width direction is gently inclined downward and then folded back in a substantially horizontal direction. Further, a step portion 4d protruding further upward is formed, and the tip portion 4e is folded back again in the substantially horizontal direction from the step portion 4d, and the tip portion 3b of the inside panel 3 is oriented in the substantially horizontal direction and rear damper stiffener 4 is formed. It can come into contact with the lower surface of the center side extension 4c.

Further, both end portions of the rear roof rail 7 are also formed with a step portion 7a projecting upward, and the inner and outer substantially horizontal portions 7b and 7c sandwiching the step portion 7a are extended portions on the center side of the rear damper stiffener 4. 4c and the tip portion 4e, as shown in FIG. 1, in the front-rear central portion 7d and the rear edge 7e of the rear roof rail 7, the inner horizontal portion 7b is the tip portion 4e of the rear damper stiffener 4.
The outer horizontal portion 7c is superposed on the center side extension portion 4c of the rear damper stiffener 4 and the tip portion 3b of the inside panel 3 and spot welded together. , 14 are integrally joined to each other, and in the front end edge 7f of the rear roof rail 7, the inner horizontal portion 7b is overlapped with the front end portion 4e of the rear damper stiffener 4 as shown in FIG. The outer horizontal portion 7c is integrally joined to each other by a nut 9a, and the outer horizontal portion 7c is superposed on the center side extension portion 4c of the rear damper stiffener 4 and the tip portion 3b of the inside panel 3 so as to be integrally joined to each other by a bolt 8b and a nut 9b. It is joined.

Openings 4f, 7g for welding 11, 12, 13, 14 are formed in the step 4d of the rear damper stiffener 4 and the step 7a of the rear roof rail 7.

Further, as shown in FIG. 4, the inside panel 3 is provided with a locking hole 3c for mounting an interior material or a component (not shown).

In the embodiment shown in FIGS. 1 to 4,
As described above, the center side extension portion 4c of the rear damper stiffener 4 is overlapped and integrally joined to the outer horizontal portion 7c of the rear roof rail 7 and the tip portion 3b of the inside panel 3, and the rear damper stiffener 4 is also provided.
Since the front end portion 4e of the rear roof rail 7 is overlapped and integrally joined to the inner horizontal portion 7b of the rear roof rail 7, the rear damper stiffener 4 that bears most of the load applied to the damper mounting portion of the wheel house (not shown) Then
The load that the rear damper stiffener 4 bears is distributed to two places apart from the rear roof rail 7 in the vehicle width direction, and the joint rigidity of the rear damper stiffener 4 to the rear roof rail 7 increases, so that the rigidity of the vehicle body is greatly increased. improves.

Further, the rear damper stiffener 4 is extended in the vehicle width center direction, and the overlapping portion of the rear damper stiffener 4 with respect to the rear roof rail 7 is extended in the vehicle width direction so that the center side extension 4c of the rear damper stiffener 4 is the rear roof rail. 7 is integrally joined to the outer horizontal portion 7c of the rear damper 7 and the tip portion 4e of the rear damper stiffener 4
Is integrally joined to the inner horizontal portion 7b of the rear roof rail 7, and the rigidity load of the rear roof rail 7 is reduced. Therefore, the rear roof upper is not necessary and the plate thickness of the rear roof rail 7 is thin, which reduces the weight of the vehicle body. Can be realized.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a rear body structure of an automobile according to the present invention.

FIG. 2 is a cross-sectional front view cut along the line II-II in FIG.

FIG. 3 is a perspective view of the embodiment shown in FIG.

FIG. 4 is an exploded perspective view of FIG.

FIG. 5 is a plan view illustrating a rear body structure of a conventional automobile.

6 is a cross-sectional front view taken along the line VI-VI of FIG.

7 is a perspective view of the rear body structure of FIG.

FIG. 8 is an exploded perspective view of FIG. 7.

[Explanation of symbols]

1 ... Rear pillar part, 2 ... Outside panel, 3 ... Inside panel, 4 ... Rear damper stiffener, 5 ... Roof panel, 6 ... Roof groove, 7 ... Rear roof rail, 8
… Bolts, 9… nuts, 10,11,12,13,14… spot welding.

Claims (1)

[Claims] 1. In a rear body structure in which a lower end of a rear damper stiffener interposed between an outside panel and an inside panel of a rear pillar portion is joined to a damper mounting portion of a wheel house, an upper portion of the rear damper stiffener is It is located above the inside panel and is integrally joined to the coupling recess of the roof panel and the outside panel, and is also located closer to the center of the vehicle width than the joining portion and is integrally joined to the rear roof rail and the inside panel. At the same time, a rear vehicle body structure of an automobile, wherein an upper extension end of a rear damper stiffener extending toward the vehicle width direction center side from the joint is integrally joined to the rear roof rail.