JPH0513883U - Rear body structure of automobile - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a rear body structure of an automobile that can receive an impact load applied to a side stopper without increasing the weight of the vehicle body, improve the mounting strength, and reduce the load on the quarter outer panel. [Structure] A reinforcement 12 having an upper end extending upward to a mounting portion of a side stopper 3 is arranged between a quarter outer panel 10 and a quarter inner panel 11,
The front and rear end portions of the reinforcement 12 are sandwiched between the front and rear end portions of the quarter outer panel 10 and the quarter inner panel 11 and spot welded. The reinforcement 12 is provided with a fitting portion 12a along the inner surface of the side stopper mounting portion of the quarter outer panel 10, and the fitting portion 12a, the side stopper 3, and the quarter outer panel 10 are fastened together with the mounting bolt 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rear vehicle body structure of an automobile, and more particularly to a reinforcing structure of a side stopper mounting portion for a back door.

[0002]

[Prior Art]

 Conventionally, as a rear body structure of an automobile, for example, as disclosed in Japanese Utility Model Laid-Open No. 63-18324, there is known a structure in which an outer panel and an inner panel are joined to each other with a quarter pillar portion interposed between reinforcements to increase rigidity. ing. In addition, a reinforcing plate, which is different from the reinforcement, is arranged inside the outer panel at the stay mounting portion, and the reinforcing plate and the outer panel are fastened together with the stay mounting bolts.

By the way, in the case of an automobile equipped with a back door having a hinge at its upper end, both sides of the back door and It is known that side stoppers are attached at corresponding positions on the vehicle body side. In particular, the side stopper on the vehicle body side is attached to the quarter outer panel, and a mounting plate called a retainer is arranged inside the quarter outer panel at the mounting portion of the side stopper, like the stay mounting portion in the above publication. The outer panel and the side stopper are fastened together with mounting bolts.

[0004]

[Problems to be solved by the device]

 However, as described above, the side stopper mounting retainer is only welded and fixed to the quarter outer panel, so the retainer plate thickness must be increased to secure the strength of the mounting surface. It has the drawback of increasing weight. Also, the impact load applied to the side stopper when the back door is closed must be received by the quarter outer panel, and even if the retainer plate is thickened, deformation and fatigue of the quarter outer panel cannot be eliminated.

Therefore, an object of the present invention is to provide a rear vehicle body structure of an automobile that can receive an impact load applied to a side stopper without increasing the vehicle body weight, improve the mounting strength, and reduce the load on the quarter outer panel. To do.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention arranges a reinforcement extending vertically between at least a lamp mounting portion and a back door side stopper mounting portion between a quarter outer panel and a quarter inner panel. Both front and rear end parts are joined by sandwiching them between the front and rear end parts of the quarter outer panel and the quarter inner panel, and part of the reinforcement is placed along the inner surface of the side stopper mounting part of the quarter outer panel. The joint, the side stopper, and the quarter outer panel are fastened together with the fasteners.

[0007]

[Action]

 When the back door is closed, the side stopper on the back door side collides with the side stopper on the vehicle body side. At this time, the vehicle body side stopper is fastened together with the reinforcement and the quarter outer panel, so the impact load when the door is closed is received by both the rain reinforcement and the quarter outer panel. Therefore, the load on the quarter outer panel is small, and deformation and fatigue are small. Since the front and rear ends of the reinforcement are sandwiched and joined between the quarter outer panel and the quarter inner panel, there is no positional deviation between the reinforcement and the quarter outer panel, and the side stopper mounting rigidity is further enhanced. By providing a part that extends from the part along the reinforcement toward the front of the vehicle body, and by joining the end of this extension by sandwiching it with the quarter outer panel and the quarter inner panel, the impact load when the back door is closed can be extended to the reinforcement. Since it can be received as a force in the plane direction, it is possible to obtain a rear body structure that is further excellent in impact resistance.

[0008]

【Example】

 1 to 4 show an example of an automobile having a rear body structure according to the present invention. Two hinges 2 are provided at the upper end of the back door 1, and the back door 1 can be opened and closed vertically with the hinge 2 as a fulcrum. A lock mechanism (not shown) is provided in the center of the lower end of the back door 1.

As shown in FIG. 2, the quarter pillar portion of the vehicle body has a closed cross-section structure of a quarter outer panel 10 and a quarter inner panel 11, and front and rear end portions are spot-welded with a reinforcement 12 sandwiched between them. ing. In this embodiment, a separate part called a trowel 13 is arranged on the inner side of the vehicle body of the quarter outer panel 10, but it goes without saying that both parts may be integrated. As described above, the front and rear ends of the quarter pillar are spot welded by superimposing the quarter outer panel 10 (or the trough 13), the reinforcement 12 and the quarter inner panel 11 on each other, so that the assembling workability is improved. In addition, the mechanical strength is improved and the spot hitting point can be hidden by the weather strip 14, which is also advantageous in terms of aesthetics.

A side stopper 3 made of elastic rubber is attached to the quarter pillar portion to prevent interference with the vehicle body when the back door 1 is closed and to prevent lateral shake of the back door 1. On the other hand, side stoppers 4 corresponding to the side stoppers 3 are attached to both sides of the back door 1. The mounting bolt 5 of the side stopper 3 is inserted through the quarter outer panel 10, the troof 13 and the reinforcement 12, and is fixed by being tightened together with a nut 6 which is projection welded to the reinforcement 12 in advance. Therefore, the reinforcement 12 is integrally formed with a portion 12a along the inner sides of the quarter outer panel 10 and the troof 13. The impact load when the back door 1 is closed acts in the direction of the arrow in FIG. 2, but the reinforcement 12 extends forward from the aligning portion 12a in parallel with the impact load direction. Most of the force can be received by the reinforcement 12 and the burden on the quarter outer panel 10 can be reduced.

As shown in FIG. 3, the mounting portion of the back lamp 20 is such that the front end portion of the quarter inner panel 11 is overlapped with the front end portion of the reinforcement 12 by spot welding, and the rear end portion of the quarter inner panel 11 is mounted. The structure is such that the trowel 13 is spot-welded by overlapping with the inside of the vehicle body, and the rear end of the reinforcement 12 is spot-welded to the inner surface of the troof 13. Since the back lamp 20 shields the welded portion between the reinforcement 12 and the trough 13, there is no possibility of impairing the aesthetics. Since the quarter inner panel 11 and the reinforcement 12 have the closed cross-section structure as described above, the rigidity inside the vehicle can be increased. The outer portion of the troof 13 is spot-welded to the quarter outer panel 10.

In the space between the quarter outer panel 10 and the reinforcement 12, a harness 30 for supplying power to a rear wiper, a rear defogger, etc. attached to the back door 1 is wired as shown in FIG. At this time, the harness 30 is inserted from above between the quarter outer panel 10 and the reinforcement 12, but since the upper end of the reinforcement 12 ends at the vicinity of the mounting portion of the side stopper 3, the harness 30 shown in FIG. There is a possibility that the harness 30 may be mistakenly inserted between the reinforcement 12 and the quarter inner panel 11 as indicated by a chain double-dashed line. Since the gap between the reinforcement 12 and the quarter inner panel 11 is a blind alley at the bottom, wiring is impossible. Therefore, the upper end portion 12b of the reinforcement 12 is bent toward the inside of the vehicle body as shown in FIG. 4 so that the harness 30 is not accidentally inserted between the reinforcement 12 and the quarter inner panel 11. As described above, by inclining the upper end portion 12b of the reinforcement 12 inward, the harness 30 can be inserted smoothly, and water can be reinforced when water enters from the opening of the back door. Since it can flow along the outer surface of the ment 12, it has an effect of preventing water from entering the vehicle interior.

[0013]

[Effect of the device]

 As is clear from the above description, according to the present invention, since the reinforcement is arranged between the quarter outer panel and the quarter inner panel, the cross-sectional rigidity of the rear part of the vehicle body is significantly increased and the strength against the impact when the back door is closed is high. Is improved. In particular, the reinforcement is integrally formed with a part along the inner surface of the side stopper mounting part of the quarter outer panel, and the side stopper, the quarter outer panel, and the rain reinforcement are tightened together, so the impact load applied to the side stopper is not affected. Not only can it be received by reinforcement, the burden on the quarter outer panel can be greatly reduced compared to the conventional one with a separate retainer, and the workability of attaching side stoppers has also been improved. Furthermore, the plate thickness can be made thinner, so the weight can be reduced.

[Brief description of drawings]

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

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

FIG. 3 is a sectional view taken along line BB of FIG.

4 is a cross-sectional view taken along the line CC of FIG.

[Explanation of symbols]

 1 Back Door 2 Hinge 3,4 Side Stopper 5 Bolt (Tightening Tool) 10 Quarter Outer Panel 11 Quarter Inner Panel 12 Reinforcement 12a Alongside Section 13 Troof 20 Back Lamp

Claims (1)

[Scope of utility model registration request] 1. A reinforcement which extends vertically between at least the lamp mounting portion and the back door side stopper mounting portion is arranged between the quarter outer panel and the quarter inner panel, and the front and rear end portions of the reinforcement are arranged as described above. While sandwiching and joining between the front and rear ends of the quarter outer panel and the quarter inner panel, part of the above reinforcement is aligned with the inner surface of the side stopper mounting part of the quarter outer panel. The rear body structure of the automobile, characterized in that the three members are fastened together with the fastening tool.