JPH0632464Y2 - Rear body structure of automobile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a rear vehicle body structure of an automobile, and more particularly to a vehicle body structure for improving vehicle body strength at a rear corner portion.

(Prior Art and Problems Thereof) In general, the rear end of an automobile has a joint structure by welding a rear fender panel and a rear end panel. However, in this conventional structure, since the openings for mounting the rear combination lamps are largely provided on both left and right sides of the rear end panel, the panel rigidity around the openings tends to be insufficient.

In particular, since the upper edge of the rear panel upper forms the opening edge of the luggage compartment, the rigidity at the joint (corner) between the rear fender panel and the rear end panel, which corresponds to the upper edge of the opening for mounting the rear combination lamp, is increased. Was wanted.

Therefore, as disclosed in JP-A-60-151182, a reinforcing member is provided on the rear panel upper at the corner portion, and a closed cross section is formed by the rear panel upper and the reinforcing member without deteriorating the panel moldability. There is a rear body structure that attempts to increase the rigidity around the corners.

However, when the vehicle body structure is a so-called open-top structure using a collapsible pillar, the rigidity of the vehicle body is insufficient as compared with a vehicle body having a general structure (vehicle body with a roof) because there is no roof portion structure. Therefore, the influence on the vehicle body such as bending and twisting applied to the vehicle body due to the vibration during traveling and the lateral G during cornering increases, and it is inevitable that only the reinforcement at the rear panel upper portion as described above is performed. There is a problem that the peripheral rigidity is insufficient.

However, if the thickness of the members around the corners such as the rear fender panel or the rear end panel is increased to improve the rigidity, it is necessary to increase the thickness of each member considerably, resulting in a heavy vehicle weight. This is against the recent trend of weight reduction of the vehicle body, which deteriorates running performance such as fuel consumption and acceleration performance.

(Object of the Invention) In view of the above circumstances, an object of the present invention is to provide a rear body structure of an automobile capable of increasing rigidity around a corner portion without impairing weight reduction of the vehicle body.

(Structure of the Invention) To achieve the above object, a rear vehicle body structure according to the present invention includes a rear fender panel, a rear end panel having an opening for mounting a lamp, and a rear end panel inner disposed inside the rear end panel. A quarter panel that is joined to the upper end of the rear fender panel and extends downward,
A corner plate outer joined to a side end further joined to a joint between the upper end of the rear fender panel and an upper end of the quarter panel and an upper end of the rear end panel, and an upper end of the rear end panel inner, and at least a rear end panel and a rear end. A first closed cross section formed by a panel inner, and a reinforcement for connecting the quarter panel, the rear end panel inner, and the corner plate outer are provided, and the reinforcement includes the quarter panel and the corner plate outer. To form a second closed cross section, and the rear end panel inner and the corner plate outer form a third closed cross section.

Embodiments of the Invention Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing a rear body structure of an open top type vehicle to which an embodiment of the rear body structure of the vehicle according to the present invention is applied.

1 is a rear fender panel, 2 is a front window, 3 is a front header which is located at an upper edge of the front window 2 and supports the front window 2, 4 is a side door, 5
Is a substantially inverted U-shaped retractable pillar disposed near the rear portion of the side door 4, and the retractable pillar 5 is connected and supported by a support shaft 6 to a side frame (not shown) inside the rear fender panel 1. The side door 4 is rotatably provided rearwardly of the side door 4 about the support shaft 6 from a state of standing upright.

Reference numeral 7 is a roof panel, which is hinged to the top of the retractable pillar 5 in the upright state.
It has been bridged between.

Reference numeral 8 denotes a hood that covers the upper part of the vehicle body behind the inclinable pillar 5, and the peripheral portion of the hood 8 is fixed to the rear end of the inclinable pillar 5 and the rear fender panel 1. And the collapsible pillar 5
When the hood 8 is rotated rearward from the standing state, the hood 8 is housed together with the retractable pillar 5 in a storage unit (not shown) provided below the hood 8, and the roof panel 7 is placed on the foldable pillar 5. Is folded and stored at a hinge portion between it and the retractable pillar 5. Reference numeral 9 is a rear window provided in the center of the hood 8.

10 is a rear end panel, 11 is a rear end panel 10
A rear end panel upper that constitutes an upper part of the rear end panel upper part of the rear end panel upper part 11.
2 is provided largely, and the openings 12 and 12 are for mounting a rear combination lamp (not shown).

The rear end panel 10 is the rear fender panel 1.
And a corner portion 13 having a vehicle body structure according to the present invention above the opening 12 and fixedly joined together.
The rear fender panel 1 is also joined and fixed to the lower side of the. In addition, 14 shows the opening of the trunk room.

FIG. 2 is an enlarged perspective view showing the vehicle body structure of the corner portion 13 by disassembling a part thereof. FIG. 3 is an enlarged perspective view of the assembled structure, and FIGS. 4 and 5 are sectional views taken along the lines AA and BB in FIG. 3, respectively. .

The upper end of the quarter panel 15 is bonded and fixed to the inner upper end of the rear fender panel 1.
In 3, the upper end of the quarter panel 15 is joined and fixed with the joining portion of the corner plate outer 16 to the rear fender panel 1 interposed therebetween.

Then, the upper end portion of the rear end panel inner 17 having a panel surface substantially parallel to the panel surface of the rear end panel upper 11 is joined and fixed to the inner end surface of the corner plate outer 16 on the rear end side. In addition, the upper end edge of the rear end panel upper 11 is attached to the edge of the corner plate outer 16 on the rear end side.
The rear fender panel 1 and the rear end panel 10 are joined by joining and fixing along the edge portion of the rear end side 6 of the rear fender panel 6.

The rear end panel upper 11 and the rear end panel inner 17 are connected with a connecting member 17A having a substantially Z-shaped cross section and a substantially U-shaped cross section so that the panel surfaces are substantially parallel to each other. The member 17B is extended in the vehicle width direction so that the connecting member 17A is provided above the opening 12 for mounting the rear combination lamp.
The connection member 17B is arranged below the opening 12 to be fixedly bonded. At this time, the rear end panel upper 11
A first closed cross section 20 is formed between the rear end panel inner 17, the corner plate outer 16, and the connecting member 17A.

Further, the end portion of the rear end panel inner 17 on the corner portion 13 side is joined and fixed to the substantially vertical surface of the quarter panel 15 at the corner portion 13.

If the corner portion 13 has a conventional structure, the connection is completed as described above, and the structure has sufficient strength. However, in this embodiment, since the vehicle body is an open top structure and there is no roof structure, Rigidity of the vehicle body is insufficient compared to a vehicle body with a general structure (vehicle body with a roof). Therefore, the vehicle body is bent or twisted due to vibration during traveling or lateral G during cornering. The impact of
The stress concentrated on the corner 13 is also increasing.
In addition, by repeatedly applying such concentrated stress,
In an extreme case, metal fatigue may cause cracks near the corners 13.

Therefore, in order to disperse this concentrated stress, a substantially vertical surface of the quarter panel 15 on the trunk room 14 side, a substantially vertical surface of the rear end panel inner 11 inside the rear end panel inner 17 on the trunk room 14 side, and a corner plate outer 16 are provided. The reinforcement 18 is joined and fixed to the three inner surfaces to form a closed cross section. That is, as shown in FIG. 4, a second closed cross section 21 is formed between the quarter panel 15, the corner plate outer 16, and the reinforcement 18, and the rear end panel inner 17 and the rear end panel inner 17 are formed as shown in FIG. A third closed cross section 22 is formed between the corner plate outer 16 and the reinforcement 18.

With such a structure, the reinforcement 18
Between the quarter panel 15 and the rear end panel inner 17, which are joined at a substantially right angle at the corner 13,
Further, between the quarter panel 15 and the corner plate outer 16 above the joining portion of the rear end panel inner 17 which are joined at a substantially right angle, each functions like so-called bracing.

That is, the reinforcement 18 acts as a connecting member that holds these relative positional relationships with respect to the three surfaces of the quarter panel 15, the rear end panel inner 17, and the corner plate outer 16 that form a three-dimensional corner portion, and at the same time, the corner portion. This is a structural member that disperses the concentrated stress applied to 13 on the above three surfaces evenly and increases the bonding strength.

That is, for example, due to the open top structure, bending applied to the vehicle body due to vibration during traveling or lateral G during cornering,
Even if the influence of twisting or the like on the vehicle body increases, and thus the stress concentrated on the corner portion 13 increases, the stress is dispersed to each member of the corner portion 13 by the reinforcement 18 as described above. Therefore, the rigidity of the rear end portion of the vehicle body is relatively improved after all.

In particular, the openings 12 and 12 for mounting the rear combination lamps at the left and right ends of the rear end panel upper 11.
Despite the fact that the trunk room opening 14 is wide open, the rigidity of the vehicle body is greatly improved, and the weight of the vehicle body is increased only by the minimum necessary reinforcement 18. Therefore, the rigidity is improved without impairing the weight reduction of the vehicle body.

(Effect of the Invention) According to the vehicle body structure of the rear part of the vehicle according to the present invention as described above, the vehicle body rigidity of the rear end corner part can be improved without impairing the weight reduction of the vehicle body, and the rigidity of the rear combination lamp upper part can be improved. Will be improved.

In addition, when the vehicle body has an open top structure, the influence on the vehicle body such as bending and twisting applied to the vehicle body due to vibration during running and lateral G during cornering increases, but it can sufficiently withstand these. Has become.

[Brief description of drawings]

FIG. 1 is a perspective view showing a rear vehicle body structure of an open top type automobile to which an embodiment of the rear vehicle body structure according to the present invention is applied, and FIG. 2 is an enlarged view showing a vehicle body structure of a corner portion thereof by disassembling a part thereof. 3 is a perspective view, FIG. 3 is an enlarged perspective view showing a vehicle body structure of a corner portion thereof, FIG. 4 is a sectional view taken along the line AA in FIG. 3, and FIG. 5 is B-B in FIG. It is sectional drawing of a line arrow. DESCRIPTION OF SYMBOLS 1 ... Rear fender panel 10 ... Rear end panel 13 ... Corner part 15 ... Quarter panel 16 ... Corner plate outer 18 ... Reinforcement (reinforcing member) 20 ... First closed cross section 21 ... Second closed cross section 22 ... Third closed cross section

Claims (1)

[Scope of utility model registration request] 1. A rear fender panel, a rear end panel having an opening for mounting a lamp, a rear end panel inner disposed inside the rear end panel, and a quarter panel joined to an upper end of the rear fender panel and extending downward. A corner plate outer joined to a side end further joined to a joint between the upper end of the rear fender panel and an upper end of the quarter panel and an upper end of the rear end panel, and an upper end of the rear end panel inner, and at least the rear end panel and the rear end. A first closed cross section formed by a panel inner, and a reinforcement for connecting the quarter panel, the rear end panel inner, and the corner plate outer are provided, and the reinforcement includes the quarter panel and the corner play. A rear vehicle body structure for an automobile, characterized in that a second closed cross section is formed by the toe outer and a third closed cross section is formed by the rear end panel inner and the corner plate outer.