JP2000185671A - Drain hole in floor of automobile and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve drain hole performance by forming a water collecting region of downgrade toward the rear part of a vehicle at a plurality of positions of a floor panel, and forming a drain hole as a slit extending in the car width direction in a rear end surface rising so as to return to a floor panel as the rear end of this water collecting region. SOLUTION: A slit 11 extending in the car width direction in a vertical surface is formed by shifting the vehicle front side of a notch 15 downward in relation to the vehicle rear side suing a horse-shoe-type press die 19 having a bottom surface 19a of downgrade to the rear part of the vehicle, and simultaneously a water collecting region 10 of downgrade toward the rear part of the vehicle is formed on the vehicle front side of the notch 15. The rear surface of a floor panel 1 is coated to form a lower side coating for soundproof and chipping resistance. At this time, because the slit 11 is sealed by the coating and the slit 11 is vertical, paint leakage to the front side can be reduced, and therefore, any masking work is not required.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile floor water formed at a plurality of locations on a floor panel and finally sealed with a paint film in order to drain water collected on the floor in the automobile manufacturing process. It relates to a hole.

[0002]

2. Description of the Related Art Drainage plug holes are provided in a plurality of places on a floor panel of an automobile when water accumulates in a manufacturing process.
Finally, a plug is plugged and sealed with a coating for soundproofing or chipping resistance. in this case,
There is a problem that it is difficult to paint the protruding part of the plug. Therefore,
As shown in FIGS. 3 and 4, the floor panel 1 has a radius of 20.
A pair of semicircular drain hole slits 2 of about mm is formed, and the slits 2 are finally sealed with an upper coating film 3 for soundproofing and a lower coating film 4 for soundproofing and chipping prevention. That is being done.

[0003]

In this case, it is necessary to mask the side opposite to the first painted side with a sheet in order to prevent the paint from coming off at the time of painting from the slit formed in the flat floor panel as it is. is there. Further, since the periphery of the slit is flat, not only the drainage performance is not good in terms of water collection, but also there is room for improvement in chipping resistance.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a floor drain hole for an automobile, which can eliminate the need for a masking operation at the time of painting and can improve chipping resistance, and a method of manufacturing the same.

[0005]

According to the present invention, in order to attain this object, according to the present invention, a plurality of portions of a floor panel are formed in order to drain water collected on the floor panel in a manufacturing process of an automobile. Then, in a floor drain hole of the automobile finally sealed by the coating film, a water collecting area having a downward slope toward the rear of the vehicle is formed at a plurality of places on the floor panel, and the water collecting area is formed after the water collecting area. A drain hole is formed as a slit extending in the vehicle width direction on a rear end surface which rises so as to return to the floor panel at the end.

[0006] Water on the floor panel is collected along a downward slope of the water collecting area, and is drained from a slit-shaped drain hole. When the floor panel is finally painted, it is sealed with the coating. The coating seal portion is formed at the rear end of the water collecting area toward the rear of the vehicle.

[0007] In order to manufacture the automobile floor drain hole according to the first aspect, according to the second aspect, cuts are formed at a plurality of positions of the floor panel by cutting with a cutter, and then a downward slope is formed toward the rear of the vehicle. By pressing the vehicle front side floor panel with a press die having a bottom surface, the vehicle front side floor panel is displaced downward with respect to the vehicle rear side floor panel to form a drain hole slit and a vehicle. It is preferable to form a water collecting area having a downward slope toward the rear of the vehicle on the front floor panel.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for manufacturing a floor drain hole according to an embodiment of the present invention will be described with reference to FIGS. A plurality of drain holes are formed in the floor panel 1 by cutting with a cutter 18 in the vehicle width direction, for example, in a region where water drain holes are formed.
A cut 15 of 0 mm is formed. Next, a slit 11 extending in the vehicle width direction on a vertical plane by displacing the vehicle front side of the cut 15 downward with respect to the vehicle rear side with a horseshoe-shaped press die 19 having a bottom surface 19a having a downward slope 19a toward the vehicle rear side. At the same time, a water collecting area 10 having a downward slope toward the rear of the vehicle is formed on the vehicle front side of the cut 15.

[0009] The back surface of the floor panel 1 is painted,
The lower coating film 4 for chipping resistance is formed. At this time, the slit 11 is sealed by the coating film 4a, and since the slit 11 is in the vertical direction, there is little paint leakage to the front side, thus eliminating the need for a masking operation. be able to. Next, the upper coating film 3 for soundproofing is formed. The order of these coatings may be reversed, and depending on the case, either one may be used.

Water on the floor panel is collected along the downward slope of the water collecting area 10 and drained from the slit 11.
The slit is formed on the rear end face which rises in the vertical direction so as to return to the floor panel 1 at the rear end of the water collecting area 10, and the sealing use film 4 a is formed on the rear end of the water collecting area 10. The chipping resistance is also improved by being hidden and formed toward the opposite side to the vehicle traveling direction.

[0011]

According to the first aspect of the present invention, since the drainage hole faces the rear of the vehicle, masking work of the drainage hole at the time of painting the floor panel can be omitted. The chipping resistance is also improved. By providing the water collecting area in front of the drain hole, the drain hole performance is also improved. According to the second aspect of the present invention, since the drainage holes are formed by forming the cuts in the floor panel and pressing, the waste material is not produced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a floor panel having a drain hole according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a manufacturing process of the floor drainage hole.

FIG. 3 is a cross-sectional view of a floor panel having a conventional drain hole.

FIG. 4 is a plan view of a drain slit shown in FIG. 3;

[Explanation of symbols]

 Reference Signs List 1 floor panel 4a slit coating film 10 water collecting area 11 slit 15 cut

Claims (2)

[Claims] 1. A floor drain hole for an automobile, which is formed at a plurality of locations on the floor panel and is finally sealed with a coating film, for draining water accumulated on the floor panel in an automobile manufacturing process. At a plurality of locations on the panel, a water collecting area having a downward slope toward the rear of the vehicle is formed, and a drain hole is formed at a rear end face of the rear end part of the water collecting area which rises to return to the floor panel. A floor drain hole for an automobile, formed as a slit extending in the vehicle width direction. 2. A method for manufacturing a floor drainage hole for an automobile according to claim 1, wherein cuts are formed at a plurality of locations on the floor panel by cutting with a cutter, and then the bottom surface is inclined downward toward the rear of the vehicle. By pressing the vehicle front side floor panel of the cut with a press mold having a, the vehicle front side floor panel is displaced downward with respect to the vehicle rear side floor panel to form a drain hole slit, A method for manufacturing a floor drain hole for an automobile, comprising forming a water collecting area having a downward slope toward the rear of the vehicle in the vehicle front side floor panel.