JPS61169375A - Structure of vehicle body - Google Patents

Abstract

PURPOSE:To improve rigidity of an inner plate in a vehicle body rear side part by providing an extension pillar inner panel which is supported through connection to a body side member and the inner plate member. CONSTITUTION:A body side member 32 of a letter U-shaped section with flanges 32a on both side edges is joined to the rear side upper edge part of a rear pillar inner panel 22. This forms a closed section part 33 in the longitudinal direction of a vehicle body between the body side member 32 and the rear pillar inner panel 22. The upper end part of an extension pillar inner panel 34 is fixed to the rear side part of the body side member 32.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the body structure of an automobile in which a rear fender panel is molded from a suitable resin material. As shown in Fig. 13, a car body in which the front end panel is molded with a suitable resin has been proposed (Utility Model Publication No. 58-90881).
No.) a, that is, the vehicle body l, is provided with a metal cabin inner panel 3 whose upper end is fixed to a roof panel 2 and forms a rear side wall. The lower edge of the rear pillar inner panel 3 is a foil inner panel 4 on the front side.
and the foil house outer panel 5 (first
Figure 1) Rear floor panel 6 and bracket 7 on the rear side
(Fig. 12),! The rear floor panel 6 is supported by a side member 8 disposed in the longitudinal direction of the vehicle body.

On the other hand, the rear ender panel 9 is molded with a suitable resin, and has seven flange 10.
Figure 12). The front end portion of this resin rear fender panel 9 is attached to the rear wing inner panel 3 with an adhesive 13.
(Fig. 13).

Further, the flange 10.11 is fixed to the rear pillar inner panel 3 and the wheel outer panel 5 by means of poles 14.14, and the lip 12 is fixed to the bracket 7 by clips 15.

Problems to be Solved by the Invention However, in this vehicle body structure, the structure of the rear pillar inner panel 3, etc., which is the inner plate member to which the resin rear 7 ender panel 9 is attached, is almost the same as that of a conventional vehicle body using a metal rear fender panel. The composition is as follows. Therefore, in order to ensure the required rigidity for the rear side portion of the vehicle body while making the rear fender panel 9 from resin, it is required to thicken the resin material and reinforce the insufficient rigidity by increasing the size of the ports 14 and clips 150. Ru. For this reason, due to the increased thickness of the resin material and the increased size of bolts, etc., it has not always been possible to sufficiently reduce the weight of the vehicle body by using resin for the rear 7 ender panel.

The present invention has been made in view of such conventional circumstances, and provides a vehicle body structure that can ensure sufficient rigidity in the rear side portion of the vehicle body even when the rear 7 ender panel is made of resin. It is something to do.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a vehicle body in which the rear fender panel is formed of an appropriate low-rigidity member, and a metallic inner part located inside the rear fender panel. When a body side member forming a closed cross section in the longitudinal direction of the vehicle body is connected to the plate member for power distribution, an extension pillar inner panel is provided which is connected and supported by the body side member and the inner plate member, and the extension pillar inner panel is connected and supported by the body side member and the inner plate member. A rear floor panel forming the rear floor surface and a rear panel forming the rear wall of the vehicle body are bonded and fixed to the panel.

Effect In the above configuration, an upward load applied to the rear floor panel via the rear suspension is transmitted to the extension pillar inner panel.

The extension pillar inner panel is supported by a body side member, and the body side member forms a closed cross section in the longitudinal direction of the vehicle body. Therefore, the body side member functions as a new vehicle body frame member in the rear side portion of the vehicle body, and the load is reliably supported by the body side member.

Also, the forward-facing load applied to the rear panel due to a rear-end collision is
It is transmitted to the body side member via the extension pillar inner panel joined to the rear panel. At this time, since the body side member has a closed cross section in the longitudinal direction of the vehicle body as described above, the body side member has an effective support 1i for the forward load that is in the same direction as the closed cross section.
Il] property is obtained.

Therefore, sufficient rigidity of the rear side portion of the vehicle body can be ensured regardless of the material of the rear fender panel, and it is therefore possible to make the rear fender panel made of resin and to make it thinner.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 9 of the drawings. That is, the vehicle body 20 is provided with a rear pillar inner panel 22, which is a metal inner plate member whose upper end is fixed to a rear roof rail 21 and forms a rear side wall inside the vehicle interior (FIG. 1). The lower edge of the rear villa inner panel 22 is sandwiched between a wheel house inner panel 23 and a wheel house outer panel 24 on the front side (Fig. 3), and a rear 70 side panel 25 on the rear side.
(Fig. 4), the rear floor side panel z has an extending portion 25 bent in the direction of the passenger compartment.
The extended portion 25a is connected to a rear floor panel 26 forming the floor surface of the vehicle body (FIG. 4). Furthermore, the rear edge of the rear 70 side panel 25 is fixed to a rear panel 27 (FIG. 5), and the core rear panel 27 forms the rear wall of the vehicle body. A rear pillar outer panel 28 is provided on the outside of the rear pillar inner panel 22.
are joined, and the lower end of the rear pillar outer panel is fixed to the wheel house outer panel 24 (FIG. 3). Therefore, in the vehicle body 20, a roof pillar portion 31 is formed as a vehicle body frame member, which has a closed cross section 30 in the vertical direction of the vehicle body by the rear wing inner and outer panels 22.28 (FIG. 6).

A body side member 32 having a U-shaped cross section and having seven flanges 32a, 32a on both side edges is connected to the rear upper edge of the rear villa inner panel 22, so that the body side member 32 is connected to the rear pillar. A closed section 33 in the longitudinal direction of the vehicle body is formed between the inner panels 22 (FIG. 4). The front end of the body side member 32 is fixed to the rear villa outer panel 28 and
), the closed section (9) is therefore continuous with the rear villa portion 31.

The upper end of the extension pillar inner panel is fixed to the rear side of the body side member 32 (
Figure 7). The inner panel 34 is formed on the extension shim/pillar with a bulging portion 34a that is bent toward the outside of the vehicle interior, and the rear edge portion is joined to the side edge bent portion 27a of the rear panel n ( Figure 8).

The extension pillar inner panel 34 is further joined to the rear pillar inner panel 22 and the rear floor side panel 25 (FIG. 8.9).

The rear ender panel on one side is molded with a suitable low-rigidity resin material. The rear fender panel 350 has an upper flange 35a, a lower 7 flange 35b, and a flange 35b at the periphery of the rear fender panel 350.
A lunge 35c is formed. Said upper 7 lunges3.
5a is fixed to the upper surface of the body side member 32, and the lower flange 35b is fixed to the flange 25b of the rear floor side panel 25 by bolts and nuts 36 (FIG. 4). In addition, the side flange 35c is attached to the bent portion 27a of the rear panel r at the upper portion (FIG. 8).
At the bottom, F, tension pillar inner panel 3
Retainer blades are interposed at the joints 37 between the rear panel 4 and the rear panel n, and these are fixedly secured by bolts and nuts 36 (FIG. 5). Further, a rear bumper 39 is provided on the lower outer periphery of the rear panel η. The rear bumper 39 is supported by a pumper tie (not shown), and is collinear with the joint portion 37 by bolts and nuts 36 on both sides (FIG. 5). Furthermore, Section 2.8
In the figure, 40 is a rear panel finisher disposed outside the bent portion 27a of the rear panel 27.

In this embodiment having the above configuration, first, as shown in FIG. 2, the upward load Gu input to the rear floor 26 through the rear suspension during driving will be considered. This upward load Gu is applied to the rear 70 side panel 25.
via the pillar inner panel 22. and extension biller inner panel separately. At this time, a closed cross section is formed in the rear upper part of the pillar inner panel 22 by the body side member 32, and the extension pillar inner panel 84 is supported by the body side member 32. Moreover, the body side member 32 is connected to a rear pillar portion 31Ki which is a vehicle body frame member. Therefore, the body side member 32 functions as a new vehicle body frame member in the rear side portion of the vehicle body that is continuous with the rear pillar part 31, and most of the load Gu is transmitted by the body side member 32 and is reliably supported by this member. . Furthermore, the load transmitted to the body side member 32 is also dispersed and supported by the rear pillar portion 31, thereby significantly improving the rigidity of the vehicle body and rear side portion against the load Gu. Therefore, since it is not necessary to form a closed cross section using the fender panel, the fender panel can be made of thin resin.

Next, as shown in FIG. 2, the forward load G applied to the vehicle body during a rear collision will be considered. This forward load G
y is input to the rear panel 27 via the rear bumper 39 or directly. At this time, the said Lyapampa 39
and the rear panel η are both joined separately to the extension pillar inner panel, and the extension rear pillar inner panel is joined to the body side member 32. For this reason, the forward-facing load GF forms a closed cross-section in the longitudinal direction of the vehicle body, so it is supported by the body side member 32, and the member 32 forms a closed cross-section in the same direction as the forward-facing load GF. This provides effective support rigidity. Furthermore, since the body side member 32 is connected to the rear pillar part 31, it can be supported by the rear pillar part, which is a vehicle body frame member, even under a forward load GF.

Therefore, the rigidity of the rear side portion of the vehicle body can be sufficiently ensured by coupling the inner panels described above, regardless of the material of the outer panels of the vehicle body. Therefore, not only can the rear fender panel be made of resin, but it can also be made thinner for the purpose of reducing vehicle weight and cost, and it is also possible to improve the degree of freedom in shaping. As shown in FIG. 5.8, there is a bulge 34 on the inside of the rear fender panel 35.
a is located. Therefore, when the rear fender panel section is bent and deformed inward, it is supported by the bulge portion 34a, and it is also possible to prevent a deterioration in quality due to excessive deformation.

DETAILED DESCRIPTION OF THE INVENTION As described above, the present invention provides a vehicle body in which a rear fender panel is formed of an appropriate low-rigidity member, in which a body side member is bonded to an inner plate member located inside the rear fender panel, and the body side member is bonded to the inner plate member located inside the rear fender panel. The present invention has a structure in which an extension pillar inner panel is formed which forms a closed cross section, and is further coupled and supported by a body side member and an inner plate member, and a rear floor panel and a rear panel are joined to the extension pillar inner panel. Therefore, an upward load applied to the rear floor panel can be supported by the body side members via the extension pillar inner panel, and a forward load applied to the rear panel can also be supported by the body side members. Since this body side member has a closed cross section in the longitudinal direction of the vehicle body, it functions as a new vehicle body frame member in the rear side portion of the vehicle body. Therefore, the rigidity of the inner plate in the rear side of the car body has been dramatically improved, and the use of resin for the rear fender panel is a hot topic, and thinner walls can reduce the weight and cost of the car, as well as improve the degree of freedom in shaping. can. Also, one of the inner plates in the rear side part of the vehicle body
9. As the overall rigidity of the vehicle body improves due to the improved rigidity, it is possible to use resin not only for the rear fender panel but also for other parts.9. This can promote the resin conversion rate of the car body.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is an external perspective view of a vehicle body according to an embodiment of the present invention, FIG. 3 is a sectional view taken along the line -■ for FIG. 4 is a sectional view taken along the line IV-IV of FIG. 2, FIG. 5 is a sectional view taken along the line ■-v of FIG. 2 is a sectional view taken along line ■-■, FIG. 8 is a sectional view taken along line 2--■, FIG. 9 is a sectional view taken along line IX-IX in FIG. 2, and FIG. 10 is a side view of the conventional vehicle body. Figure 11 is a sectional view taken along the line XI-XI in Figure 10.
Figure 2 is a cross-sectional view of the 1theta cutting line, and Figure 13 is a cross-sectional view of the 10th figure.
It is a sectional view of Figure xm-x. 22...Rear pillar inner panel (inner plate member) 25-
-Rear floor side panel 2f't-...Rear 70 Abanel n...Rear panel 28...Rear villa - outer panel 31...e Rear pillar part 32...Body side member, wings...Closed cross section o...-・Extension rear wing - inner panel wing...Rear fender panel. 2 people outside Figure 3 Figure 5 Figure 6 Figure 31 Rear Ci Sea hit Figure 7

Claims (1)

[Claims] 1. In a vehicle body in which the rear fender panel is formed of an appropriate low-rigidity member, a body side member forming a closed cross section in the longitudinal direction of the vehicle body is provided on a metal inner plate member located inside the rear fender panel. An extension pillar inner panel is provided which is joined and arranged and is connected and supported by the body side member and the inner plate member, and a rear floor panel forming a rear floor surface and a rear wall of the vehicle body are formed on the extension pillar inner panel. A vehicle body structure characterized by a fixed rear panel.