JP4070188B2 - Automotive back door structure - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to an automobile back door structure in which a flat concave portion for fitting a window glass is formed by press working on an upper portion of an outer panel of a back door.
[0002]
[Prior art]
Conventionally, a vehicle body includes a vehicle body, a back door pivotally supported by the vehicle body so as to freely open and close a door opening formed on the rear wall of the vehicle body, and the rear wall of the vehicle body. In many cases, a pair of left and right combination lamps attached to the left and right sides of the vehicle is provided, and in the rear view of the vehicle body, a flat concave portion for inserting a window glass is generally provided on the upper portion of the outer panel of the back door. It is formed by press working (for example, JP-A-10-236166).
[0003]
In the above configuration, conventionally, the lower wall of the recess and the lower edge of the side portion at the top of the outer panel are arranged in a line in the width direction of the vehicle body, and the side wall of the recess and the side edge at the lower portion of the outer panel are vertically The combination lamp is inserted into a corner space between the lower edge of the upper side of the outer panel and the lower side edge of the outer panel, and the combination lamp is mounted on the vehicle body. Proposals have been made that are visible from the rear.
[0004]
[Problems to be solved by the invention]
By the way, the above conventional technique has the following problems.
[0005]
That is, an integrated joint between the end of the lower wall of the recess in the width direction of the vehicle body and the lower end of the side wall corresponding to the end of the lower wall is connected to the corner space, and It is not formed in the middle part of the outer panel in a direction along the surface of the outer panel.
[0006]
For this reason, when the outer panel raw material is pressed to form the recess, stress concentration tends to occur at the end of the connecting portion connected to the corner space, and there is a problem in pressing such as a crack. Most likely to occur.
[0007]
Therefore, conventionally, the outer panel of the back door is composed of an outer panel main body having a recess having a shape in which the lower wall does not exist, and a lower wall constituting member that is coupled to the outer panel main body as a separate body and constitutes the lower wall. The outer panel main body and the lower wall constituent member are individually molded by press working, and then joined together, thereby avoiding inconvenience in the press working and molding the outer panel. Has been proposed.
[0008]
However, according to the above-described conventional technology, the outer door panel forming operation requires the operation of coupling the outer panel main body and the lower wall constituent member to each other. Therefore, the back door forming operation is complicated. ing. Further, since the outer panel includes at least the above-described two parts, there is a problem that the configuration of the back door becomes complicated due to the large number of parts.
[0009]
The present invention has been made paying attention to the above situation, and it is an object of the present invention to make it possible to easily form a back door of an automobile and to simplify the configuration of the back door.
[0010]
Moreover, even if it does as mentioned above, it makes it a subject to keep the appearance on the external appearance of a back door favorable.
[0011]
[Means for Solving the Problems]
The vehicle back door structure of the present invention for solving the above-described problems is as follows. In addition, the code | symbol attached | subjected to each term in this term does not limit and interpret the technical scope of this invention to the content of the term of the following "embodiment of invention".
[0012]
According to the first aspect of the present invention, in the rear view of the vehicle body 2 (FIGS. 1 to 3), a flat concave portion 17 into which the window glass 16 is fitted into the upper portion 15 of the outer panel 14 of the back door 13 is formed by press working. The lower wall 24 and the lower edge 32 of the side portion 29 in the upper portion 15 of the outer panel 14 are arranged in a line in the width direction of the vehicle body 2, and the side edges of the side wall 25 of the recess 17 and the lower portion 30 of the outer panel 14 are arranged. In the back door structure of an automobile in which 31 is arranged in a line in the vertical direction,
[0013]
A notch 36 is formed between the end of the lower wall 24 in the width direction of the vehicle body and the lower end of the side wall 25 corresponding to the end of the lower wall 24.
[0014]
According to a second aspect of the present invention, in addition to the first aspect of the invention, the corner of the bottom portion 22 of the concave portion 17 that is sandwiched between the end portion of the lower wall 24 and the lower end portion of the side wall 25 and continues to the notch 36 is provided. A convex step portion 37 is formed on the portion.
[0015]
In addition to the invention of claim 1 or 2, the invention of claim 3 protrudes outward in a direction along the surface of the window glass 16 from the corner 41 on the lower side of the window glass 16. A molding 42 is provided which is attached to the corner portion 41 and covers the stepped portion 37 from the outer surface side, and has a protruding end portion 46 fitted into the notch 36.
[0016]
According to a fourth aspect of the present invention, in addition to the third aspect of the invention, the stepped portion 37 is disposed outside the corner portion 41 of the window glass 16 in a direction along the surface of the window glass 16. is there.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0018]
In FIG. 2, reference numeral 1 denotes an automobile, and a vehicle body 2 of the automobile 1 is supported on a running surface 4 by wheels 3 and has a vehicle interior 5 inside thereof, and a rear wall of the vehicle body 6. 7 and a pair of left and right combination lamps 9 attached to the lower left and right sides of the rear wall 7 of the vehicle body 6.
[0019]
The back door device 8 is formed on the rear wall 7 and has a door opening 12 communicating with the inside and outside of the vehicle compartment 5. The back door device 8 is pivoted to the vehicle body main body 6 so that the door opening 12 can be opened and closed from the outside of the vehicle body 2. The back door 13 is provided with an outer panel 14 made of sheet metal and forming the rear side thereof by press working.
[0020]
In the rear view of the vehicle body 2 (FIGS. 1 to 3), a rectangular and flat concave portion 17 is formed in which a rectangular window glass 16 is inserted into and supported by the upper portion 15 of the outer panel 14. The concave portion 17 forms the bottom surface of the space 20 in the concave portion 17 in the thickness direction (front-back direction) of the back door 13 and forms the bottom portion 22 having the window opening 21 and the upper and lower edges of the space 20. In addition, lower walls 23 and 24 and left and right side walls 25 and 52 for forming left and right side edges of the space 20 are provided. The outer edge of the window glass 16 is bonded to the outer surface of the bottom portion 22 of the space 20, the upper and lower walls 23 and 24, and the side walls 25 by an adhesive seal material 26 made of urethane. It is supported by the outer panel 14 of the back door 13.
[0021]
The left and right side portions 29 in the upper portion 15 of the outer panel 14 protrude outwardly from the side edge 31 in the lower portion 30 of the outer panel 14, and the side portions 29 are back doors 13 with respect to the door opening 12. In accordance with the opening / closing operation, the left and right outer surfaces of the rear end portion of the vehicle body 6 are covered so as to be freely opened and closed. The lower wall 24 of the concave portion 17 and the lower edge 32 of each side portion 29 in the upper portion 15 of the outer panel 14 are linearly arranged in a line in the width direction of the vehicle body 2. Further, the side wall 25 of the recess 17 and the side edge 31 of the lower portion 30 of the outer panel 14 are arranged in a straight line in the vertical direction. The combination lamp 9 is inserted into a corner space 34 between the lower end edge 32 of each side portion 29 in the upper portion 15 of the outer panel 14 and the side end edge 31 in the lower portion 30 of the outer panel 14. Is visible from the rear of the vehicle body 2.
[0022]
A notch 36 is formed between the end portion of the lower wall 24 of the recess 17 in the width direction of the vehicle body 2 and the lower end portion of the side wall 25 corresponding to the end portion of the lower wall 24. And the lower end of the side wall 25 are located slightly apart from each other with the notch 36 interposed therebetween.
[0023]
Here, when the raw material of the outer panel 14 is pressed and the concave portion 17 is formed, the end portion of the lower wall 24 in the concave portion 17 and the side wall 25 corresponding to the end portion of the lower wall 24 are temporarily assumed. Assuming that the lower end portion is a joint portion integrally joined to each other, this joint portion is formed by a lower end edge 32 of the side portion 29 in the upper portion 15 of the outer panel 14 and a side end edge 31 in the lower portion 30 of the outer panel 14. Since it is connected to the corner space 34, there is a possibility that inconveniences such as cracks may occur in the joint portion according to the press work.
[0024]
However, as described above, the notch 36 is formed between the end portion of the lower wall 24 of the concave portion 17 in the width direction of the vehicle body and the lower end portion of the side wall 25 facing the end portion of the lower wall 24. Therefore, the absence of the coupling portion prevents the occurrence of inconveniences in press processing such as cracks.
[0025]
In addition, as described above, when the recess 17 is formed by pressing the raw material of the outer panel 14, the relative dimensional error that is likely to occur between the lower wall 24 and the side wall 25 of the recess 17 is the above-described cut. Absorbed by the notch 36.
[0026]
Therefore, the molding operation of the outer panel 14 can be facilitated, that is, the molding operation of the back door 13 can be facilitated.
[0027]
A convex stepped portion 37 is formed at the corner portion of the bottom portion 22 of the concave portion 17 sandwiched between the end portion of the lower wall 24 and the lower end portion of the side wall 25 and connected to the notch 36. The outer surface of the stepped portion 37 is, in the thickness direction of the back door 13, a general surface 38 of the outer surface of the bottom portion 22, and a general surface 39 of each outer surface of the side portion 29 and the lower portion 30 of the upper portion 15 of the outer panel 14. It is located between.
[0028]
For this reason, compared with the case where the end portion of the lower wall 24 and the lower end portion of the side wall 25 are merely connected at the corner portion of the bottom portion 22, the connection between these 24 and 25 is made by the step portion 37. Reinforced.
[0029]
Therefore, as described above, when the notch 36 is formed between the end portion of the lower wall 24 of the recess 17 and the lower end portion of the side wall 25, the strength of the portion of the outer panel 14 formed with the notch 36 is increased. Although it tends to decrease, this decrease in strength is compensated by the step portion 37.
[0030]
A resin that is attached to the corner 41 so as to protrude outward in a direction along the surface of the window glass 16 from the lower corner 41 of the window glass 16 and covers the stepped portion 37 from the outer surface side. A mall 42 is provided. The molding 42 has a fitting portion 44 that has a fitting hole 43 that fits the corner portion 41 and is attached to the corner portion 41, and is integrally formed from the fitting portion 44 to the outside of the corner portion 41. And the outer edge of the molding 42 in the rear view of the vehicle body 2 is joined in pressure contact with the lower wall 24 and the side wall 25 of the recess 17 so that the protrusion 45 protrudes. An end 46 is fitted into the notch 36. In this case, the general surfaces 39 of the side portion 29 and the lower portion 30 of the outer panel 14 and the outer surfaces of the molding 42 are substantially flush with each other.
[0031]
Here, if the notch 36 and the stepped portion 37 are simply provided, the appearance of the back door 13 tends to deteriorate. However, as described above, the notch 36 and the stepped portion 37 are formed by the molding 42. Since it is covered, the appearance of the back door 13 is kept good.
[0032]
Further, the step portion 37 is disposed outside the corner portion 41 of the window glass 16 in a direction along the surface of the window glass 16.
[0033]
For this reason, since the window glass 16 and the stepped portion 37 do not interfere with each other, the stepped portion 37 is set higher and the strength is improved without affecting the arrangement and structure of the windowglass 16. It has been. Further, the thickness dimension of the projecting portion 45 of the molding 42 is shortened according to the stepped portion 37, and the outer surface of the molding 42 projects more outward than the general surface 39 of the side portion 29. Is prevented. Therefore, the strength reduction due to the provision of the notch 36 is sufficiently compensated by the stepped portion 37 without affecting the appearance of the back door 13.
[0034]
【The invention's effect】
The effects of the present invention are as follows.
[0035]
According to the first aspect of the present invention, in the rear view of the vehicle body, a flat concave portion for fitting the window glass into the upper portion of the outer panel of the back door is formed by press working, and the lower wall of the concave portion and the lower end of the side portion at the upper portion of the outer panel In the automobile back door structure in which the edges are arranged in a row in the width direction of the vehicle body, and the side walls of the recesses and the side edges in the lower portion of the outer panel are arranged in a row in the vertical direction.
[0036]
A notch is formed between the end of the lower wall in the width direction of the vehicle body and the lower end of the side wall corresponding to the end of the lower wall.
[0037]
Here, when the recess is formed by pressing the raw material of the outer panel, the end of the lower wall in the recess and the lower end of the side wall corresponding to the end of the lower wall are integrated with each other. Assuming that the joint portion is a joint portion, the joint portion is connected to the corner space between the lower end edge of the side portion at the upper portion of the outer panel and the side end edge at the lower portion of the outer panel. According to the processing, there is a possibility that inconveniences such as cracks may occur in the joint portion.
[0038]
However, as described above, a notch is formed between the end of the lower wall of the recess in the width direction of the vehicle body and the lower end of the side wall facing the end of the lower wall. Since there is no coupling portion, it is possible to prevent inconveniences in press processing such as cracks.
[0039]
Moreover, as described above, when the recess is formed by pressing the raw material of the outer panel, a relative dimensional error that is about to occur between the lower wall and the side wall of the recess is absorbed by the notch. .
[0040]
Therefore, the molding operation of the outer panel can be facilitated, that is, the molding operation of the back door can be facilitated.
[0041]
According to a second aspect of the present invention, a convex stepped portion is formed at a corner portion of the bottom portion of the concave portion which is sandwiched between the end portion of the lower wall and the lower end portion of the side wall and is continuous with the notch.
[0042]
For this reason, compared with the case where the end portion of the lower wall and the lower end portion of the side wall are merely connected at the corner portion of the bottom portion, these connections are reinforced by the step portion.
[0043]
Therefore, as described above, when a notch is formed between the end portion of the lower wall of the recess and the lower end portion of the side wall, the strength of the portion of the outer panel formed with the notch tends to decrease. This strength reduction is compensated by the stepped portion.
[0044]
Invention of Claim 3 is attached to this corner | angular part so that it may protrude outward from the corner | angular part of the lower side part of the said window glass in the direction along the surface of this window glass, The said level | step-difference part is from the outer surface side. A molding is provided in which the projecting end portion is fitted into the notch while being covered.
[0045]
For this reason, if the cutout and the stepped portion are simply provided, the appearance of the back door tends to be deteriorated, but the cutout and the stepped portion are covered with the molding as described above. The appearance of the back door remains good.
[0046]
According to a fourth aspect of the present invention, the stepped portion is disposed outside the corner portion of the window glass in a direction along the surface of the window glass.
[0047]
For this reason, since the said window glass and a level | step-difference part do not mutually interfere, the intensity | strength improvement can be aimed at by setting the said level | step-difference part higher, without affecting the arrangement | positioning and structure of the said window glass. Therefore, the strength reduction due to the provision of the notch can be sufficiently compensated by the stepped portion without affecting the appearance of the back door.
[Brief description of the drawings]
FIG. 1 is a partially enlarged view of FIG.
FIG. 2 is a rear view of the automobile.
FIG. 3 is a view corresponding to FIG. 1, with the window glass and the molding removed.
4 is a cross-sectional view taken along line 4-4 of FIG.
FIG. 5 is a cross-sectional view taken along line 5-5 in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Car 2 Car body 6 Car body body 7 Rear wall 8 Back door device 9 Combination lamp 12 Door opening 13 Back door 14 Outer panel 15 Upper part 16 Window glass 17 Recess 20 Space 22 Bottom part 23 Upper wall 24 Lower wall 25 Side wall 29 Side part 30 Lower part 31 Side edge 32 Lower edge 34 Corner space 36 Notch 37 Step portion 38 General surface 39 General surface 41 Corner portion 42 Mole 46 Projection end portion

Claims (4)

In the rear view of the vehicle body, a flat concave portion for fitting the window glass into the upper portion of the outer panel of the back door is formed by pressing, and the lower wall of the concave portion and the lower edge of the side portion at the upper portion of the outer panel are formed in the width direction of the vehicle body. In the back door structure of an automobile in which the side walls of the recesses and the side edge at the lower part of the outer panel are arranged in a line in the vertical direction.
A back door structure for an automobile in which a notch is formed between an end portion of the lower wall in the width direction of the vehicle body and a lower end portion of the side wall corresponding to the end portion of the lower wall. The back door structure for an automobile according to claim 1, wherein a convex stepped portion is formed at a corner portion of a bottom portion of the concave portion that is sandwiched between an end portion of the lower wall and a lower end portion of the side wall and is continuous with the notch. . It is attached to this corner so as to protrude outward in the direction along the surface of the window glass from the corner of the lower side of the window glass, and covers the stepped portion from the outer surface side, and its protruding end The back door structure of the automobile according to claim 1 or 2, further comprising a molding that is inserted into the notch. The back door structure for an automobile according to claim 3, wherein the step portion is disposed outside the corner portion of the window glass in a direction along the surface of the window glass.

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