JP2004306825A - Structure of back door outer panel of automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure of a back door outer panel of an automobile, which structure improves its formability in press work, makes a lamp dummy portion small, and increases a degree of freedom of design of a lamp. <P>SOLUTION: The back door outer panel 11 of the automobile has a lamp mounting portion 12a of the same profile as that of a lamp. The back door outer panel 11 of the automobile comprises: a lamp mounting housing panel 12 which has the lamp mounting portion 12a and has a size larger than the lamp mounting portion; and a back door outer panel 11 which has a housing panel connecting hole 11a a size smaller than that of the lamp mounting housing panel 12. The outer edge portion of the lamp mounting housing panel 12 is connected to the inner edge portion of the housing panel connecting hole 11a so as to overlap each other, and sealer 13 is applied to the connected portion. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a structure of a back door outer panel of an automobile.
[0002]
[Prior art]
The structure of the back door outer panel of the conventional automobile is roughly divided into an outer housing integrated type and an outer housing separate type.
[0003]
[Problems to be solved by the invention]
As shown in FIG. 6, the outer housing integrated type is formed by integrally forming a lamp mounting portion 2 having the same contour as a lamp on a back door outer panel 1. There is a problem that the press formability is not good because the deep part of the cross section extends over a long range at the center.
Further, because the cross-sectional depth of the lamp mounting portion 2 cannot be obtained due to the press-moldability of the back door outer panel 1, as shown in FIG. 7, which is a cross-sectional view taken along the line II-II of FIG. Since the divergence angle θ of the light source 3a deviates from the divergence angle θ, the lamp dummy portion 3b, which is a portion that cannot emit light, becomes large, and there is a problem that the aesthetic appearance of the lamp 3 is not very good.
[0004]
On the other hand, in the outer housing separate type, a lamp mounting housing having the same contour as the lamp is formed separately from the back door outer panel 1, and has a housing connection hole 1a having the same contour as the lamp as shown in FIG. After the back door outer panel 1 is formed, the outer edge of the lamp mounting housing is connected to the inner edge of the housing connection hole 1a, and a sealer as a vinyl chloride solvent is applied to the connection.
In the case of this example, the press formability is improved, but the sealer is applied to the inner edge portion of the housing connection hole 1a, that is, the burring portion. Therefore, the bent portion of the housing connection hole 1a is limited to R25. There is a problem in that the shape of the connection hole 1a, that is, the shape of the lamp cannot be made sharp, and there is a limitation on the lamp design.
[0005]
Therefore, an object of the present invention is to provide a structure of a back door outer panel of an automobile, in which the press formability is improved, the lamp dummy portion can be reduced, and the degree of freedom in lamp design can be improved.
[0006]
[Means for Solving the Problems]
To achieve the above object, according to a first aspect of the present invention, there is provided a back door outer panel of an automobile having a lamp mounting portion having the same contour as a lamp, comprising a lamp mounting housing panel having a lamp mounting portion and being slightly larger than the lamp mounting portion. A back door outer panel having a housing panel connection hole slightly smaller than the lamp mounting housing panel, and connecting the outer edge of the lamp mounting housing panel to the inner edge of the housing panel connection hole so as to overlap with each other, and connecting the lamp mounting housing panel to the inner panel. It is characterized in that a sealer is applied to the part.
[0007]
According to the first aspect of the invention, the portion that is most protruded by press molding, in other words, the portion that has the greatest depth, that is, the lamp mounting portion is formed in the lamp mounting housing panel and is separated from the back door outer panel. As a result, the moldability is dramatically improved. Further, since the lamp mounting housing panel can be formed separately from the back door outer panel, the cross-sectional depth of the lamp mounting portion can be increased, and the lamp dummy portion can be made extremely small. The aesthetic appearance is improved.
[0008]
In the second invention, the lamp mounting portion has a shape having a sharp corner, and the sealer bends the connecting portion outward so as to avoid the sharp corner near the sharp corner. It is characterized by having a shape.
[0009]
According to the second aspect of the present invention, the application portion of the sealer has a shape different from the acute angle portion of the lamp mounting portion so that a portion of R25 or less does not occur. The lamp design can be greatly improved.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described.
FIG. 1 is a perspective view showing an embodiment of the structure of a back door outer panel according to the present invention, FIG. 2 is an enlarged perspective view of a main part of FIG. 1, and FIGS. 3 to 5 are VI-VI line and VII-VII of FIG. FIG. 8 is a sectional view taken along line VIII-VIII.
[0011]
In the present embodiment, the back door outer panel 11 and the lamp mounting housing panel 12 are separately press-formed, and then connected to each other to form a separate outer housing. The back door outer panel 11 has a housing panel connection hole 11 a that is slightly smaller than the lamp mounting housing panel 12. The lamp mounting housing panel 12 has a lamp mounting portion 12a having the same contour as a lamp described later, and the lamp mounting portion 12a is slightly smaller than the entire lamp mounting housing panel 12. The outer edge of the lamp mounting housing panel 12 is connected to the inner edge of the housing panel connection hole 11a by spot welding or the like so as to overlap each other, and a sealer 13 is applied to the connection.
[0012]
As shown in FIG. 2, the lamp mounting portion 12a has a substantially wedge shape having sharp corners 12b. In order to avoid the above, the connecting portion is formed to have an outwardly curved shape so that a portion of R25 or less does not occur. The lamp 14 is fixed to the lamp mounting portion 12a of the lamp mounting housing panel 12 by a fixing screw 15, as shown in FIG.
[0013]
According to the structure of the back door outer panel, the portion which is most protruded by press molding, in other words, the portion having the greatest depth, that is, the lamp mounting portion 12a is formed in the lamp mounting housing panel 12, and the back door outer panel 11 is formed. Since it is separated from the mold, the moldability is dramatically improved. Further, since the lamp mounting housing panel 12 can be formed separately from the back door outer panel 11, the cross-sectional depth of the lamp mounting portion 12a can be increased, and as apparent from FIGS. be able to. As a result, the appearance of the lamp is improved. In addition, since the application portion of the sealer 13 has a different shape from the acute angle portion 12b of the lamp attachment portion 12a so that a portion of R25 or less does not occur, there is no problem in application, and the lamp attachment portion 12a is replaced with the acute angle portion 12b. The lamp design can be greatly improved.
[0014]
【The invention's effect】
As described above, according to the structure of the back door outer panel according to the present invention, the press moldability is improved, the lamp dummy portion can be reduced, and the degree of freedom in lamp design is improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a conventional back door outer panel integrated with an outer housing.
FIG. 2 is an enlarged sectional view of a main part of FIG.
FIG. 3 is a sectional view taken along the line VI-VI in FIG. 2;
FIG. 4 is a sectional view taken along line VII-VII in FIG.
FIG. 5 is a sectional view taken along the line VIII-VIII in FIG. 2;
FIG. 6 is a perspective view of a conventional back door outer panel integrated with an outer housing.
FIG. 7 is a sectional view taken along the line II-II in FIG.
FIG. 8 is a perspective view of a conventional back door outer panel having a separate outer housing.
[Explanation of symbols]
Reference Signs List 11 Back door outer panel 11a Housing panel connection hole 12 Lamp mounting housing panel 12a Lamp mounting portion 12b Sharp corner 13 Sealer 14 Lamp 15 Fixing screw

Claims (2)

In a back door outer panel of a vehicle having a lamp mounting portion having the same contour as a lamp,
A lamp mounting housing panel having a lamp mounting portion and being slightly larger than the lamp mounting portion; and a back door outer panel having a housing panel connection hole being slightly smaller than the lamp mounting housing panel.
A back door outer panel structure, wherein an outer edge of the lamp mounting housing panel is connected to an inner edge of the housing panel connection hole so as to overlap with each other, and a sealer is applied to the connection. The lamp mounting portion may have a shape having sharp corners, and the sealer may have the connecting portion bent outward so as to avoid the sharp corners near the sharp corners. The structure of the back door outer panel according to claim 1, characterized in that:

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