JPH0455125A - Automobile back door structure - Google Patents

Abstract

PURPOSE:To eliminate necessity for a large sub-frame so as to improve visual recognition toward the back side by combining a frame casing with a sub-frame. CONSTITUTION:A frame casing 11 of closed section structure is formed by a combination consisting of an outer panel 13 and an inner panel 14, and both sides of the frame 11 are connected to each other by a sub-frame 12. This makes it possible to use a small sub-frame 12 so as to improve visual recognition toward the back side. A slant glass 5 and a vertical glass 6 are supported principally by the outer panel 13 of the frame casing 11, and are supported only supplementary by the sub-frame 12. Consequently, both glasses 5 and 6 can be mounted in accurate positioning because they are supported by the outer panel 13 which is one member.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a back door structure that has an inclined glass and an elevated glass and is attached to the rear of an automobile so that it can be opened and closed vertically.

(Prior art) As a back door structure of an automobile, for example, Utility Model Application No. 64-4
As described in Publication No. 1424, the back door is attached to the rear of a car so that it can be opened and closed vertically, and the back door has a sloped surface that extends rearward so as to be continuous with the roof, and a back door that extends downward from the rear end of the sloped surface. A structure is known in which the sloped surface portion and the vertical surface portion each have a plate glass attached thereto.

By the way, in such a structure, the back door frame has an inch frame integrally formed with a slope part corresponding to the slope part and a vertical part corresponding to the vertical part, and a slope part of the inner frame. It is comprised of a plurality or a single 17th outer frame attached to the outer surface and supporting the plate glass, and a 27th outer frame attached to the outer surface of the vertical part of the inch frame and supporting the plate glass.

(Problem to be Solved by the Invention) However, since the outer frame is constructed by joining the first and second outer frames, the joint part has a certain size (area) in order to ensure joint strength. )
is required, which is disadvantageous in terms of rearward visibility. In addition, since the glass plates in the inclined surface portion and the vertical portion are jointly supported by the 17th outer frame and the second outer frame, which are separate parts, respectively, it is difficult to ensure the accuracy of the mounting positions of both glass plates. Furthermore, the torsional rigidity of the back door is also disadvantageous.

The present invention has been made in view of this point, and provides a back door structure for an automobile with improved rearward visibility.

(Means for Solving the Problems) The present invention is based on the structure of a back door that has an inclined glass and an elevation glass and is attached to the rear of an automobile so that it can be opened and closed vertically, and includes an outer panel and an inner panel. are joined to form a frame with a closed cross-section structure that supports the inclined glass and the vertical glass, and both sides of the frame are connected by a sub-frame, and the upper end of the sub-frame has an inclined surface. The lower end of the glass is supported by the lower end of the subframe, and the upper end of the vertical glass is supported.

(Function) Since the outer panel and the inner panel are joined to form a frame with a closed cross-section structure, and both sides of the frame are connected by a subframe, the size of the subframe can be reduced. This makes it possible to improve rearward visibility.

In addition, sloped glass and vertical glass are basically supported by the outer panel of the frame frame, and are only auxiliarily supported by the subframe, so both glasses are supported by the outer panel, which is a single member. This means that they can be installed with high positional accuracy.

Furthermore, since both sides of the frame are connected by the subframe, it is advantageous in terms of torsional rigidity.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

In FIG. 1 showing the overall structure of an automobile, reference numeral 1 denotes an automobile, and a back door 2 is attached to the rear of a vehicle body 2 so as to be able to be opened and closed vertically. It has become.

In the closed state, the back door 3 has a shape that is continuous with the roof portion 4 of the vehicle body 2, and includes an inclined surface portion 3a that extends rearward in a streamlined shape, and an elevated surface portion that extends downward from the rear end of the inclined surface portion 2a. 3b, the inclined surface portion 3a and the vertical surface portion 3
An inclined glass 5 and an elevated glass 6 are attached to each of b.

The door frame 10 of the back door 2 is constructed as shown in FIGS. 2 to 5.

The door frame 10 includes a mouth-shaped frame 11, a lower band of the frame 11, and both sides 1 of the frame 11.
The sub-frame] 2 is constructed between IA and IIA.

The frame frame 11 has an outer panel 13 having an inner flange part 13b on the inside of the base 13a and a bent part 13c on the outside, and an inner flange part 14b on the inside of the base 14a and an outer flange part 14c on the outside. It has a closed cross-sectional structure in which the inner panel 14 and the inner panel 14 are joined, and the inner flange portion 13b of the outer panel 13 and the inner flange portion 14b of the inner panel 14 overlap on the inner peripheral side. The outer flange portion 14c of the inner panel 14 is held between the bent portions 13c of the outer panel 13 on the outer peripheral side by hemming.

Furthermore, the subframe 12 basically has a base 15.
A front flange portion 15b is provided on the front side of a, and a rear wall portion 1 is provided on the rear side of
5c, and a base 16.
The frame inner 6 has a front flange portion 16b on the front side and a rear flange portion 16c on the rear side of the frame inner 6. As shown in FIG. The cross-sectional structure is crushed and the frame outer 15
and the frame inner 6 are in a stacked state. Therefore, the overlapping portion of the side end portions of the frame outer 15 and the frame inner 16 is the inner flange portion 13 of the outer panel 13 of the frame frame 13 and the inner flange portion 14 of the inner panel 14.
b and 14b, and these four members are fixed by spot welding. Further, the end of the frame outer 15 extends further outward than the end of the frame inner 16, engages with the stepped portion 13C of the outer panel 13 of the frame frame 11, and is directly brazed (so-called 03W) to the outer panel 13. ) has been done.

The lower edge of the inclined glass 5 is joined and supported above the front flange 15b of the sub-frame 15, and the other part is connected to the inner flange 13 of the outer panel 13 of the frame frame 11.
It is jointly supported on b.

On the other hand, the upper edge of the vertical glass 6 is bonded and supported on the rear wall portion 15C of the subframe 15, and the other portion is supported by the outer panel 1.
It is joined and supported by a stepped portion 13d formed on the base portion 13a of No. 3.

With the above configuration, the outer panel 13 and the inner panel 14 are joined to form the frame 11 with a closed cross-section structure, and the both sides 11A and IIA of the frame 11 are connected by the subframe 12. Because of this structure, the size of the subframe 12 can be reduced, and rearward visibility can be improved.

In addition, the inclined glass 5 and the vertical glass 6 are basically supported by the outer panel 13 of the frame 11,
Since both glasses 5 and 6 are only supported by the sub-frame 12 in an auxiliary manner, they are supported by the outer panel 13, which is one member, and their installation is simpler than when they are installed as separate parts. positioning can be performed with high accuracy.

Furthermore, since the both side parts 11A of the frame frame 11 are connected by the sub-frame 12, it is advantageous in terms of torsional rigidity.

In addition, since the inclined glass 5 and the vertical glass 6 are usually attached to the frame 11 using urethane adhesive and a dam (or spacer), the periphery of the glass is painted black to hide them. However, if this is done, there will be a large number of blacked-out parts, which is disadvantageous in terms of rearward visibility, so it is conceivable to do it as shown in FIG. 6.

That is, the upper surface portion 21a of the frame frame 21 is made lower than the portion of the dam 23 that regulates the flow of the urethane adhesive 22, and the dam 23 is held at about three locations in the width direction by the clips 24 that hold the dam 23 in a predetermined position. By supporting it with , the black portion A can be made smaller.

(Effects of the Invention) Since the present invention is configured as described above, there is no need for a special joining part in the door frame, and there is no need to increase the size of the subframe by combining the frame frame and the subframe. This improves rearward visibility. In addition, the inclined glass and the vertical glass are mainly supported by a single outer panel, which increases the accuracy of their mounting positions compared to when they are supported by separate parts. Furthermore, since the subframe is installed between the sides of the frame consisting of the outer panel and the inner panel, the subframe has the effect of suppressing torsional deformation of the frame. It is also advantageous in terms of rigidity.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of an automobile, FIG. 2 is a perspective view of the door frame of the back door, FIG. 3 is a view of the rear of the back door viewed from inside the vehicle, and FIG. FIG. 4 is a sectional view of the joint between the frame and the side member, FIG. 5 is an exploded view of each member, and FIG. 6 is an explanatory diagram of the glass joint. 1...Car 3...Back door 5...Slope glass 6...Elevated glass 11...Frame frame 12... ... Subframe ■3 ... Outer panel 14 ... Inner panel ■ ... Car 3 ... Back door 5 ... Slanted glass 6... Elevated glass 11... Frame frame 12... Sub frame 13... Outer panel 14... Inner panel

Claims (1)

[Claims] (1) A back door structure that has a sloped glass and an elevation glass and is attached to the rear of an automobile so that it can be opened and closed vertically, and the outer panel and the inner panel are joined to form the sloped glass and the elevation glass. A frame with a closed cross-section structure is formed to support the frame, and both sides of the frame are connected by a subframe,
A back door structure for an automobile, characterized in that the lower end of the inclined glass is supported by the upper end of the subframe, and the upper end of the vertical glass is supported by the lower end of the subframe.