JP2541936Y2 - Car rear body structure - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a rear body structure of an automobile,
In particular, the present invention relates to a reinforcing structure of a back door side stopper mounting portion.

[0002]

2. Description of the Related Art Conventionally, as a rear body structure of an automobile, for example, as disclosed in Japanese Utility Model Application Laid-Open No. 18324/1988, an outer panel and an inner panel are joined with a quarter pillar portion interposed between reinforcements to increase rigidity. Known structures are known. In the stay mounting portion, a reinforcing plate different from the reinforcement is arranged inside the outer panel, and the reinforcing plate and the outer panel are fastened together with mounting bolts of the stay.

Incidentally, in the case of an automobile having a back door having a hinge at the upper end, both sides of the back door and the side of the back door are prevented to prevent interference with the vehicle body when the back door is closed and to prevent the back door from swinging sideways. It is known that a side stopper is attached to a corresponding position on a 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, similarly to the stay mounting portion of the above publication. The outer panel and the side stopper are fastened together with mounting bolts.

[0004]

However, as described above, the retainer for mounting the side stopper is merely welded and fixed to the quarter outer panel. Therefore, in order to secure the strength of the mounting surface, the thickness of the retainer must be increased. And the disadvantage is that the weight increases. 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 thickness of the retainer is increased, the deformation and fatigue of the quarter outer panel cannot be eliminated.

Accordingly, an object of the present invention is to provide a rear body structure of an automobile capable of receiving an impact load applied to a side stopper without increasing the weight of the vehicle body, improving the mounting strength, and reducing the load on the quarter outer panel. It is in.

[0006]

In order to achieve the above-mentioned object, the present invention is directed to a rain force 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. A rear end of the reinforcement is sandwiched between the rear ends of the quarter outer panel and the quarter inner panel, and a portion outside the vehicle body from a rear end joint of the reinforcement.
The inner surface of the side stopper mounting part of the quarter outer panel
A side stopper supporting part is provided along the side, and this supporting part , the side stopper and the quarter outer panel are fastened together with a fastener, and the above-mentioned reinforcement is
Tsu extends forward from Pas supporting lifting unit, preceding the extension
End the above quarter outer panel and quarter inner panel
Are joined between the front ends of the two .

[0007]

When the back door is closed, the side stopper on the back door collides with the side stopper on the vehicle body. At this time, since the vehicle body-side stoppers are fastened to the reinforcement and quarter outer panel, the impact load at the time of door closing is subject in both reinforcement and quarter outer panel. Therefore, the burden on the quarter outer panel is small, and deformation and fatigue are small. In particular, the reinforcement is a side stopper support.
Extension from the holding part, and the tip of the extension part
Between the front panel and the quarter inner panel.
As a result, the impact load when the back door is closed can be received as a planar force by the extension of the reinforcement, and a rear body structure with excellent impact resistance can be obtained.

[0008]

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 up and down with the hinge 2 as a fulcrum. At the center of the lower end of the back door 1, a lock mechanism (not shown) is provided.

As shown in FIG. 2, the quarter pillar portion of the vehicle body includes a quarter outer panel 10 and a quarter inner panel 1.
The front and rear ends are spot-welded with the reinforcement 12 sandwiched therebetween. In this embodiment, the quarter outer panel 1 is used.
Although a separate component called a troof 13 is arranged on the inside of the vehicle body 0, it is a matter of course that both components may be formed as an integral product. In this way, at the front and rear ends of the quarter pillar,
Quarter outer panel 10 (or troof 13), reinforcement 12, and quarter inner panel 11
Since the welders are overlapped and spot-welded, the assembling workability is improved, the mechanical strength is improved, and the spot hitting point can be hidden by the weather strip 14, which is also advantageous in aesthetic sense.

In the quarter pillar, a back door 1 is provided.
A side stopper 3 made of elastic rubber is mounted to prevent interference with the vehicle body when the vehicle is closed and to prevent the back door 1 from swinging sideways. 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 together with a nut 6 that has been projection-welded to the reinforcement 12 in advance. for that reason,
The reinforcement 12 is located outside the vehicle body from the rear end joint.
The quarter outer panel 10 and the troof 1
A side stopper supporting portion 12a is formed integrally with the inside of the third stopper 3. Impact load at the time of the back door 1 closing acts in the direction of the arrow in FIG. 2, reinforcement 12 is Sa
Impact load forward from the id stopper support 12a
The end of the extension 12c
The quarter outer panel 10 and the quarter inner panel 1
Since it is sandwiched and joined between the front end portions of the first outer panel 10, most of the impact load 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 spot-welded by overlapping the front end of the quarter inner panel 11 with the front end of the reinforcement 12, and is connected to the rear end of the quarter inner panel 11. The structure is such that the troof 13 is overlapped with the inside of the vehicle body and spot-welded, and the rear end of the reinforcement 12 is spot-welded to the inner surface of the troof 13. Since the welded portion between the reinforcement 12 and the troof 13 is shielded by the back lamp 20, there is no fear that the aesthetic feeling will be impaired. Since the quarter inner panel 11 and the reinforcement 12 have a closed cross-sectional structure as described above, the rigidity inside the vehicle can be increased. In addition,
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 and the like attached to the back door 1 is wired as shown in FIG. At this time, the harness 30 is inserted from above into the space between the quarter outer panel 10 and the reinforcement 12, but since the upper end of the reinforcement 12 is terminated near the attachment portion of the side stopper 3, the harness 30 shown in FIG. There is a possibility that the harness 30 may be erroneously inserted between the reinforcement 12 and the quarter inner panel 11 as indicated by a two-dot chain line. Since the gap between the reinforcement 12 and the quarter inner panel 11 is a dead end below, wiring becomes impossible. So, Reinforcement 1
The upper end portion 12b is bent toward the inside of the vehicle body as shown in FIG.
The harness 30 is prevented from being accidentally inserted between the reinforcement 12 and the quarter inner panel 11. By inclining the upper end portion 12b of the reinforcement 12 inward as described above, the harness 30 can be inserted smoothly, and water is injected into the reinforcement 12 when water enters from the back door opening. Can flow along the outer surface of the vehicle, which has the effect of preventing water from entering the vehicle interior.

[0013]

[Effects of the Invention] As is apparent from the above description, according to the present invention, the reinforcement is disposed between the quarter outer panel and the quarter inner panel, so that the cross-sectional rigidity of the rear portion of the vehicle body is significantly increased, and the back door is increased. Strength against impact at the time of closing is improved. In particular, the side stopper support portion along the inner surface of the side stopper mounting portion of the quarter outer panel is integrally formed with the reinforcement, and the side stopper, the quarter outer panel and the reinforcement are tightened together, and the reinforcement is formed.
Extend forward from the side stopper support, and
Attach the end of the extension to the quarter outer panel and quarter inner
Most of the impact load applied to the side stopper is reinforced because it is sandwiched between the front ends of the panels and joined .
The load on the quarter outer panel can be greatly reduced compared to the conventional type with a separate retainer, and the workability of attaching the side stopper is improved, and the plate thickness can be further reduced. Weight can be reduced.

[Brief description of the 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 line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a sectional view taken along line CC of FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Back door 2 Hinge 3, 4 Side stopper 5 Bolt (fastening tool) 10 Quarter outer panel 11 Quarter inner panel 12 Reinforcement 12a Side stopper support part 12c Extension part 13 Troof 20 Back lamp

Claims (1)

(57) [Scope of request for utility model registration] Between 1. A quarter outer panel and quarter inner panel, arranged reinforcement extending in the vertical direction toward the side stopper mounting portion for a back door at least lamp mounting portion, the rear end portion of the reinforcement It is sandwiched between the rear end of the quarter outer panel and the quarter inner panel, and joined to the outside of the vehicle body from the rear end joint of the reinforcement.
On the inner surface of the side stopper mounting part of the quarter outer panel
The side stopper support portion along provided, while fastened to 3 users of this support and the side stoppers and the quarter outer panel fasteners, side of the reinforcement stopper
Extending forward from the support, and the tip of this extension
The above quarter outer panel and quarter inner panel
A rear body structure of an automobile characterized by being sandwiched and joined between front ends .