JPH07112779B2 - Automotive backdoor structure - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile backdoor structure, and more particularly to an automobile backdoor provided with a stay damper for maintaining an open / closed backdoor in an open state. Regarding the structure.

(Prior Art) A vehicle having a back door is well known in the prior art. For example, Japanese Utility Model Laid-Open No. 60-124719 discloses an example of a vehicle having a back door that opens and closes in the vertical direction. The disclosed structure includes a stay damper that supports the back door from below and maintains the open state when the back door is in the open state. Further, the stay damper is housed along the rear pillar of the automobile between the rear pillar and the frame provided at the peripheral portion of the rear pillar when the back door is closed.

(Problems to be solved) By the way, in this type of vehicle, it has been designed to make the size of the windshield of the back door as large as possible and to project it to the outside of the door frame due to design requirements. Is coming.

However, since a stay damper is interposed between the back door and the rear pillar, if the window glass is configured to project outward, the step between the outer end of the wind glass and the rear pillar becomes large, There is a problem in that the appearance is poor. In order to solve this problem, it is conceivable to make the outer part of the rear pillar higher than the stay damper storage part so that it is as close as possible to the lower surface of the windshield to reduce the above-mentioned step. The following problems occur. In other words, this kind of back door is usually larger toward the bottom, and therefore the rear pillars that make up the inner end of the corresponding opening in the rear of the vehicle are more vertical from the top. It will be inclined inward.

When the opening operation of the back door is performed, the stay damper swings outward and stands up to support the back door.
Therefore, if the outside of the stay damper housing portion of the rear pillar is made higher, it will interfere with the stay damper during the opening operation of the back door.

(Means for Solving the Problem) The present invention is configured in view of the above circumstances and can take a large window glass, and further, the step difference with the rear pillar in the outer peripheral portion of the window glass is reduced to improve the appearance. It is an object of the present invention to provide a back door structure for an automobile that can solve the problem and does not adversely affect the operation of the stay damper.

The present invention provides a back door which is provided at a rear portion of a vehicle and which opens and closes in a vertical direction, and is connected to the back door and a rear pillar. When the back door is open, the back door is supported upward, and when the back door is closed, an inner edge portion of the rear pillar is provided. And a stay damper that is housed between the two along the outer edge of the back door. The stay damper swings outward when the back door opens and stands up while supporting the back door. A back door structure for an automobile, wherein the back door has a closed cross section at a peripheral edge of an inner surface of a windshield.
A frame is provided, and a second frame having a closed cross-sectional shape which extends over the stay damper and the rear pillar and constitutes an outer surface of the body is attached to the first frame.

In the rear structure of an automobile to which the present invention is applied, a back door is opened and closed in the vertical direction, and when the back door is rotated upward to be in an open state, it is supported from below by a stay damper. It is designed to be maintained in that state. The stay damper is arranged between the inner edge of the rear pillar of the automobile and the outer edge of the back door in the closed state of the back door along a direction extending in both directions. In response to the upward rotation, the rear pillar is erected while standing up while rotating with the attachment point of the rear pillar as a fulcrum to support the back door from below. In this case, in this type of support structure, the width of the upper portion of the back door is narrower than that of the lower portion, so that the stay damper slightly swings outward and stands up.

(Effect of the Invention) According to the present invention, the window glass of the back door is used as long as it extends to the vicinity of the end surface of the frame of the back door or is as large as possible so that the end surface projects outward from the frame. Back door structure can be provided. When using such a large window glass, since the stay damper is interposed, the step difference between the outer end portion of the back door and the rear pillar becomes large. This is not preferable because it gives a feeling of impairing the sense of unity between the back door and the body. In the present invention, since the second frame having the closed cross section is attached to the first frame of the back door so as to eliminate the step, this problem in appearance can be solved. Further, in the structure of the present invention, since the second frame having the closed cross-sectional shape is attached to the back door side as described above to form a part of the back door, the rigidity of the back door can be increased, and This eliminates the step between the back door and the rear pillar, so that it is not necessary to consider the appearance when setting the structure of the rear pillar. Therefore, the outside of the stay damper housing portion of the rear pillar can be made sufficiently lower, and there is no fear of interference with the rear pillar when the stay damper rotates.

(Description of Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Referring to FIG. 1, a rear portion of an automobile 1 to which the present invention is applied is shown. The automobile 1 includes a back door 2 that covers almost the entire rear portion, and the back door 2 opens and closes vertically. It is like this. In the structure of this example, the back door 2 has a trapezoidal shape, and the lower portion is wider than the upper portion. Further, when the back door 2 is opened, a retractable stay damper 3 for supporting the back door 2 in that state is provided. One end of the stay damper 3 is the back door 2 and the other end is the body. Each of the rear pillars 4 is rotatably attached. When the back door 2 is in the closed state, the stay damper 4 extends substantially along the direction in which the rear pillar 4 and the frame 5 of the back door 2 extend, as shown by the broken line in the figure, and between the rear pillar 4 and the back door 2. It is stored.

When the back door 2 is lifted and opened, the stay damper 3 is rotated around the attachment points 6 and 7 of the rear pillar 4 and the frame 5 while being extended, and the stay damper 3 is separated from the rear pillar 4 and the frame by an imaginary line in the figure. It will be in the upright position as shown. And in this state, the back door 2
The door 2 is supported by and is kept open.

Referring to FIG. 2, the back door 2 of the present example is provided with a window glass 8 extending over substantially the entire surface of the door 2 on the frame 5, and the window glass 8 is provided at its side portion at the end portion of the frame 5. It extends outward to the extent that A molding 9 is attached to the peripheral edge portion of the window glass 8. Further, the frame 5 is configured to join the inner panel 5a and the outer panel 5b to form a closed cross section. The strip 10 is attached to the panel joint portion of the inner edge portion.

Similarly, the rear pillar 4 is also constructed by joining the inner panel 4a and the outer panel 4a so as to form a closed cross section. The joint portion at the inner edge portion of the rear pillar 4 is provided at the inner end of the rear pillar 4 so as to project upward, and the weather strip 11 is attached to the joint portion. When the back door 2 is in the closed state, the weather strip 11 contacts the inner panel 5a of the frame to block communication between the inside and the outside.

At the lower part of the rear pillar 4, the upper end of the side glass 12 is fixed, and the outlet of the extractor chamber 13 for ventilation inside and outside the vehicle is provided. Further, an extractor chamber grill 14 is attached to the lower portion of the rear pillar 4 so as to cover the outlet of the extractor chamber 13.

Further, in the back door structure of this example, the outer panel 5b of the frame 5 of the back door 2 is provided with the extension portion 5c extending downward beyond the joint portion with the inner panel 5a.

Referring also to FIG. 3, a side panel 15 extending from the tip of the window glass 8 to cover the outer panel 4b of the rear pillar 4 is attached to the frame 5 of this embodiment. The side panel 15 has a closed cross section formed by joining an inner panel 15a and an outer panel 15b. In this case, the outer panel 15b is joined to the outer panel 5b of the frame 5 of the back door 2 at its inner end. The inner panel 15a is joined to the extension portion 5c of the inner panel 5a of the frame 5. This fixes the side panel 15 to the frame 5.
The stay damper 3 is arranged in a space between the outer edge of the back door 2 and the inner edge of the rear pillar 4. Inner panel 15a of side panel 15 and frame 5
As shown in FIG. 2, the joint portion of the inner panel 5a of
A seaming welt 16 that extends downward and is in contact with the outer panel 4b of the rear pillar 4 when the back door 2 is closed is attached to this joint. Fourth
As shown in the figure, the outer panel 15a extends to the joint between the back door and the roof panel, and is aligned with the tip of the horizontal frame of the back door 2.

The back door structure of this example is an extremely updated structure having the window glass 8 that covers almost the entire surface of the door, and the step between the back door 2 and the rear pillar 4 is eliminated by the side panel 15. It is possible to give a good appearance shape without impairing the sense of unity between the door and the body. In addition, since the good appearance can be obtained by the presence of the side panel 1 as described above, the portion of the rear pillar 4 outside the portion where the stay damper 3 is arranged is made sufficiently low to avoid interference with the stay damper 3. However, there is no adverse effect on the appearance.

Referring to FIG. 5, FIG. 6 and FIG. 7, another embodiment of the present invention is shown, in which bolt holes 17a are formed at predetermined intervals on the inner edge of the inner panel 15a of the side panel 15 of this embodiment. And is attached to the frame 5 with a bolt 17 through the bolt hole 17a. In addition, a bent portion 18 is provided at an intermediate portion in the longitudinal direction of the inner panel 15a, and the bent portion 18 is joined together with a joint portion of the inner end portion of the outer panel 15b with the outer panel 5b of the frame. .

With this configuration, it is possible to obtain the same effect as that of the previous example and further increase the rigidity of the back door 2.

[Brief description of drawings]

1 is an external view showing a rear portion of an automobile to which the present invention is applied, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG.
FIG. 4 is a side panel perspective view, and FIG. 4 is a partial cross-sectional view of the upper portion of the back door. FIG. 5 is a view similar to FIG. 2 of the back door structure according to another embodiment of the present invention. FIG. 5 is a view similar to FIG. 3 of the embodiment, and FIG. 7 is a view similar to FIG. 4 of the embodiment in FIG. 1 ... Car, 2 ... Back door, 3 ... Stay damper, 4 ... Rear pillar, 5 ... Frame, 6,7 ... Mounting point, 8 ... Wind glass, 9 ... Molding, 10 ... Strip, 11 …… Weather strip, 12 …… Side glass, 13 …… Extractor chamber, 14 …… Extractor grill, 15 …… Side panel, 16 …… Seaming welt, 17 …… Bolt, 17a …… Bolt hole, 18 …… Bending part.

Claims (1)

[Claims] 1. A back door which is provided at a rear portion of a vehicle and which opens and closes in a substantially trapezoidal shape in which a lower portion is wide, and a back door which is connected to the back door and a rear pillar and is open when the back door is open. And a stay damper that is housed between the rear pillar and the outer edge of the back door in a closed state between the two, and the stay damper swings outward when the back door opens. And a backdoor structure for an automobile that stands upright and supports the backdoor, wherein the backdoor includes a first frame having a closed cross section at a peripheral edge portion of an inner surface of the windshield. A second frame having a closed cross-section, which extends over the stay damper and the rear pillar and constitutes the outer surface of the body, is attached to the frame. A structure.