JP2006044604A - Door panel structure for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door panel structure for a vehicle capable of dropping an electro-deposition liquid overflowing from a part surrounded by hemming from a predetermined position. <P>SOLUTION: In the door panel structure for the vehicle, peripheral edges of an outer panel 10 and an inner panel 20 constituting the door panel 1 are installed by hemming. A folding/returning part 12 upwardly folded/returned by hemming is formed on a lower edge of the peripheral edge of the outer panel 10 and a notch 13 is provided on the folding/returning part 12. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle door panel structure used in, for example, an automobile, and more particularly to a vehicle door panel structure capable of draining a coating electrodeposition liquid at a predetermined position.

  When painting automobiles, electrodeposition is applied as a pretreatment. In this electrodeposition coating process, as shown in FIG. 7, the door panel 51 is held in an opened state by about 30 to 50 mm with respect to the vehicle body 50 of the automobile, and the vehicle body 50 is immersed in a liquid bath for electrodeposition coating. Then, it is dried in a drying furnace. The door panel 51 is left open in order to improve the adhesion of the coating to the entire vehicle by improving the surroundings of the electrodeposition liquid.

  On the other hand, the door panel 51 of the automobile is composed of an outer panel 52 and an inner panel 53 as shown in FIG. After the inner panel 53 is overlaid with the outer panel 52, the peripheral portion thereof is assembled by hemming. In this hemming process, in detail, the edge of the outer panel 52 is folded back and the edge of the inner panel 53 is sandwiched.

In such a vehicle door panel structure, for example, as disclosed in Patent Document 1, a drain hole 54 is formed in a folded portion 55 formed by hemming on the lower edge of the door panel 51. The drain hole 54 allows the electrodeposition liquid to be collected so that the electrodeposition liquid does not accumulate inside the bag-like portion 57 formed by hemming when the vehicle body 50 is lifted from the electrodeposition coating bath and dried. It is for pulling out to the lower side of the vehicle.
Japanese Utility Model Publication No. 62-187682

  However, in the structure of the above-mentioned Patent Document 1, if the electrodeposition liquid is poorly discharged and the electrodeposition liquid does not sufficiently escape from the liquid draining hole 54, the electrodeposition liquid overflows from the upper portion 58 of the folded portion 55. It will be. And the position which overflows cannot specify from which position it overflows in the vehicle longitudinal direction of the lower edge part of a door panel. Therefore, when there is a vehicle main body (for example, a side sill) below the portion where the electrodeposition liquid overflows, the overflowing electrodeposition liquid may sag on the vehicle main body and cause bumps or spots on the vehicle main body. There is. In that case, the worker had removed such irregularities and spots. Moreover, in the said patent document 1, although the liquid draining hole 54 was painted with the sealer, since it was necessary to apply the sealer to the whole folding | returning part 55, the operation | work became large.

  The present invention has been made in view of such a situation, and an object thereof is to provide a vehicle door panel structure in which an electrodeposition liquid overflowing from a portion surrounded by a hemming process can be dropped from a predetermined position. There is. Further, the present invention provides a vehicle door panel structure that does not cause paint spots or spots on the vehicle body due to overflow of the electrodeposition liquid.

In the present invention, in the vehicle door panel structure in which the outer panel and the outer panel constituting the door panel are assembled by hemming, the lower edge of the outer panel has a hemming process. A folded portion that is folded is formed, and the folded portion is provided with a notch.
The vehicle body is attached with a door panel opened, and the vehicle body and the door panel are immersed in a liquid bath for electrodeposition coating. When the door panel is opened, the notch is It arrange | positions outward with respect to the said vehicle main body, and overflows an electrodeposition liquid from the said notch.

In the vehicle door panel structure in which peripheral portions of the outer panel and inner panel constituting the door panel are assembled by hemming, the lower edge of the peripheral portion of the outer panel is folded back by hemming. A part is formed, and the inner panel uses a special plate material having a portion where the thickness of the material differs in the longitudinal direction of the vehicle, and the folded portion has a portion where the thickness of the special plate material changes There is a notch.
In addition, the door panel is attached to the vehicle main body in an open state, and the vehicle main body and the door panel are immersed in a liquid bath for electrodeposition coating. When the door panel is open, the special plate material is used. A portion where the thickness of the plate changes is disposed outward with respect to the vehicle body, and a notch is provided at a position where the thickness of the special plate changes, and the electrodeposition liquid overflows from the notch. It is supposed to let you.

In the present invention, in the vehicle door panel structure in which the outer panel and the outer panel constituting the door panel are assembled by hemming, the lower edge of the outer panel has a hemming process. Since the folded part is formed and the notch is provided in the folded part, the coating electrodeposition liquid accumulated in the part surrounded by the hemming process overflows from the position of the notch. Can do.
The vehicle body is attached with a door panel opened, and the vehicle body and the door panel are immersed in a liquid bath for electrodeposition coating. When the door panel is opened, the notch is Since it is arranged outside the vehicle body and overflows the electrodeposition liquid from the notch, the electrodeposition liquid overflowing from the notch can be dropped on the vehicle outer portion, Do not allow overflowing electrodeposition solution to adhere. As a result, there is no work such as polishing by the operator after painting the spots and spots adhering to the vehicle body.

Further, in the vehicle door panel structure in which the outer panel constituting the door panel and the inner panel are peripherally assembled by hemming, the lower edge of the outer peripheral part of the outer panel is folded upward by hemming. A folded portion is formed, and the inner panel is made of a special plate material having a portion where the thickness of the material differs in the longitudinal direction of the vehicle, and the folded portion has a portion where the thickness of the special plate material changes. Since the notch is provided at a certain position, it is possible to efficiently overflow the electrodeposition liquid from the notch, particularly at a position where the electrodeposition liquid tends to accumulate.
Further, the door panel is attached to the vehicle main body in an open state, and the vehicle main body and the door panel are immersed in a liquid bath for electrodeposition coating. In the state in which the door panel is open, the special plate material is used. A portion where the thickness of the plate changes is disposed outward with respect to the vehicle body, and a notch is provided at a position where the thickness of the special plate changes, and the electrodeposition liquid overflows from the notch. Therefore, the electrodeposition liquid overflowing from the notch can be dropped on the outer portion of the vehicle, and the overflowing electrodeposition liquid does not adhere to the vehicle body. As a result, there is no work such as polishing by the operator after painting the spots and spots adhering to the vehicle body.

  Hereinafter, a first example of a vehicle door panel structure according to an embodiment of the present invention will be described in detail with reference to FIGS.

  A front door 2 and a rear door 3 (hereinafter referred to as a door panel 1) to which the door panel structure of this embodiment is applied are rotatably attached to a vehicle body via a hinge (not shown). As shown in FIG. 1, the door panel 1 includes an outer panel 10 disposed on the vehicle outer side and an inner panel 20 disposed on the vehicle inner side. Hemming is applied to the lower edge 1a of the door panel 1, the front edge 1b and the rear edge 1c in the vehicle front-rear direction.

  FIG. 2 is a cross-sectional view of the lower edge 1a of the door panel 1, and is a cross-sectional view showing a state in which the lower edge 1a is hemmed. The edge portion of the outer panel 10 is folded upward, and the edge portion of the inner panel 20 is sandwiched between the folded portion 12 and the outer panel 10 formed by this folding. The folded portion 12 is assembled with the outer panel 10 by being crushed toward the inner panel 20.

  As shown in FIG. 3, the folded portion 12 is formed with a notch 13 extending downward from the front end 10 a of the outer panel plate. The notch 13 is positioned outward in the vehicle width direction from the side sill 40 in a state where the door panel 1 is opened by 30 to 50 mm with respect to the vehicle body 50 (see FIG. 7) of the automobile. More specifically, the notch 13 is provided below the notch 13 so that the vehicle body such as the side sill 40 is not located. The cutout 13 is processed before the outer panel 10 and the inner panel 20 are assembled by hemming.

  Next, a second example of the vehicle door panel structure according to the embodiment of the present invention will be described in detail with reference to FIGS.

  A tailored blank material is used for the inner panel 20. This tailored blank material is obtained by arranging two steel plates having different plate thicknesses in the same plane and then joining the plate thickness portions together, and a portion 21 where the plate thickness changes in the middle of this tailored blank material. have. As shown in FIGS. 5 and 6, the tailored blank material is disposed so that the thickness of the inner panel 20 is different in the vehicle front-rear direction, and the thicker portion is used for the vehicle front side portion. . A hinge (not shown) is fixed to the thick part, and the mounting strength of the hinge is improved.

  The portion 21 where the thickness of the tailored blank material changes is more outward in the vehicle width direction than the side sill 40 in a state where the door panel 1 is opened about 30 to 50 mm with respect to the vehicle body 50 (see FIG. 7) of the automobile. It is supposed to be located. Further, a notch 13 is formed in the folded portion 12 at the position of the portion 21 where the thickness of the tailored blank material changes.

Next, the operation of the first embodiment of the present invention will be described.
The vehicle body 50 of the automobile immersed in the liquid bath for electrodeposition coating is lifted by a hanger, and most of the electrodeposition liquid stored between the outer panel 10 and the inner panel 20 is on the side surface of the inner panel 20. It flows out from the opened hole (not shown). The liquid accumulated in the space between the inner panel 20 and the outer panel 10 at the lower part of the door oozes out to the flange portion and goes out. At that time, since the notch 13 is provided, the distance from the lower side of a normal door is short, so that it is easy to go outside. The liquid away from the notch 13 also flows to the notch 13 and exits.

  The vehicle body 50 is moved to a drying furnace and enters a drying process. In the drying process, since the liquid remaining between the lower end of the notch 13 and the lower side of the door is small, the water evaporates and the paint remains.

Next, the operation of the second embodiment of the present invention will be described. The state in which the electrodeposition liquid flows into the bag-like portion 14 is the same as that described in the operation of the first embodiment.
When a tailored blank material is used for the inner panel 20, as shown in FIG. 6, a liquid reservoir 16 is formed between the folded portion 12 and the inner panel 20, which is a portion 21 where the thickness of the tailored blank material changes. Will be formed. More liquid electrodeposition liquid is accumulated in the liquid reservoir 16, but the electrodeposition liquid is effectively overflowed to the outside of the liquid reservoir 16 by the notch 13 disposed in this portion.

In the vehicle door panel structure according to the first embodiment of the present invention, the notch 13 is disposed so that the side sill 40 is not positioned below the notch 13 with the door panel 1 opened. The electrodeposition liquid overflowing from the vehicle can be allowed to drip on the vehicle outer portion without adhering to the vehicle body.
Further, in the vehicle door panel structure according to the second embodiment of the present invention, a special plate material having a different thickness in the vehicle front-rear direction is used, and the special plate material is cut to a position 21 where the thickness of the special plate material changes. Since the notch 13 is provided, the electrodeposition liquid can be efficiently overflowed particularly at a position where the electrodeposition liquid tends to accumulate. And since the notch 13 is arrange | positioned so that the side sill 40 may not be located under the notch 13 in the state which opened the door panel 1, the electrodeposition liquid which overflowed from the notch 13 is not made to adhere to a vehicle main body. In addition, the vehicle can be hung on the outer portion of the vehicle.

The best mode for carrying out the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and various modifications and changes can be made based on the technical idea of the present invention. .
For example, in the embodiment of the present invention, the front door 2 and the rear door 3 have been described, but the present invention can be similarly applied to a hatchback type door.

It is the front view which looked at the door panel provided with the door panel structure for vehicles concerning a 1st embodiment of the present invention from the inner panel side. It is side part sectional drawing which shows the state cut | disconnected by the AA line of FIG. It is an enlarged view of the B section of FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a door panel having a vehicle door panel structure according to a first embodiment of the present invention, in which an electrodeposition liquid is overflowing from a notch in a state where the door panel is opened with respect to a vehicle body. . It is a door panel provided with the vehicle door panel structure which concerns on the 2nd Embodiment of this invention, Comprising: It is the front view seen from the inner panel side. It is sectional drawing which shows the state cut | disconnected by the CC line | wire of FIG. It is the conventional figure which showed the state which opened the door panel with respect to the vehicle body, Comprising: It is a perspective view which shows the state immersed in the liquid tank for electrodeposition coating. It is sectional drawing of the conventional door panel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door panel 1a Lower side edge 1b Front side edge 1c Rear side edge 2 Front door 3 Rear door 10 Outer panel 10a Tip 12 Turn-up part 13 Notch 14 Bag-like part 16 Liquid reservoir 20 Inner panel 21 Part where thickness changes 40 Side sill 50 Vehicle body 51 Door panel 52 Outer panel 53 Inner panel 54 Drain hole 55 Turn-up part 57 Bag-like part 58 Upper part

Claims (4)

In the vehicle door panel structure in which the outer panel constituting the door panel and the peripheral part of the inner panel are assembled by hemming,
A vehicular door panel structure characterized in that a folded portion that is folded upward by hemming is formed on a lower edge portion of a peripheral edge portion of the outer panel, and a notch is provided in the folded portion. .   The door body is attached to the vehicle body with the door panel opened, and the vehicle body and the door panel are immersed in a liquid bath for electrodeposition coating. When the door panel is opened, the notch is formed in the vehicle. 2. The vehicle door panel structure according to claim 1, wherein the vehicle door panel structure is disposed outwardly with respect to the main body and overflows the electrodeposition liquid from the notch. In the vehicle door panel structure in which the outer panel constituting the door panel and the peripheral part of the inner panel are assembled by hemming,
A folded portion that is folded upward by hemming is formed on the lower edge of the peripheral edge of the outer panel, and the inner panel has a special portion in which the thickness of the material differs in the vehicle longitudinal direction. A vehicular door panel structure, wherein a plate material is used, and the folded portion is provided with a notch at a position where a thickness of the special plate material changes.   The door body is attached to the vehicle body with the door panel open, and the vehicle body and the door panel are immersed in a liquid bath for electrodeposition coating. A portion where the thickness changes is arranged outward with respect to the vehicle body, and a notch is provided at a position where the thickness of the special plate material changes, so that the electrodeposition liquid overflows from the notch. The vehicle door panel structure according to claim 3, wherein

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