JPH0117445Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to the structure of a belt line portion of an automobile, and particularly relates to an improvement of the structure of a belt line portion of an automobile in which a belt line is formed by covering the upper end of a door outer panel with a belt molding.

As shown in FIG. 1, for example, a belt line structure in a conventional automobile includes an upper welding flange 2 bent inward in the door thickness direction and further upward in the upper part of the door outer panel 1 in a substantially crank shape, and an outer line. The upper end welding flange 4 of the face panel 3 is welded, and a belt molding 5 covering the outer surface, upper end surface, and inner surface of the welded welding flanges 2 and 3 is attached to the inner surface of the outer reinforcement 3. There is one that is tightened and fixed with screws 6 on the side.

In the figure, reference numeral 7 is a door inner panel, 8 is an inner reinforcement panel, 9 is a door glass, and 10 and 11 are outer panels that contact the door glass 9 and seal between the door outer side, the door inner side, and the door glass 9. The side weather strip and the inner weather strip are shown respectively.

Generally, it is desirable to make the door glass portion of the side door as large as possible in order to ensure sufficient lateral visibility of the vehicle, and to reduce the weight of the vehicle and improve styling.

However, in the conventional belt line structure of an automobile as shown in FIG. Because of the overlapping shape, the thickness and height of the belt molding 5 cannot be made sufficiently small, and therefore there is a limit to enlarging the door glass opening in this portion.

This idea was made in view of the above-mentioned conventional problems, and without making any major changes to the structure.
To provide a belt line part structure for an automobile, which can enlarge a door glass opening by reducing the height and thickness of a belt molding.

This idea involves welding an upper end welding flange bent inward in the door thickness direction and further upward in the upper part of the door outer panel into a substantially crank shape and an upper end welding flange of the outer reinforcement panel, and also attaching the welded welded flange The belt molding that covers the outer surface, upper end surface and inner surface of
In the automobile belt line structure which is screwed to the inner surface of the outer reinforcement panel, the height of the tip of the upper end welding flange of the door outer panel is defined as the tip height of the upper end welding flange of the outer reinforcement panel. The belt molding is formed with a step higher than the height of the belt molding, and the tip of the upper welding flange of the outer reinforcement panel at the step and the side surface of the tip of the upper welding flange of the door outer panel are welded. The screw fixing position to the outer reinforcement panel is set below the overlapping part of the pair of welding flanges, thereby increasing the height of the welding flanges of the door outer panel and the outer reinforcement panel. The above object is achieved by minimizing the height and thickness of the belt molding by fixing the belt molding with screws at locations other than the welded flange portion.

Embodiments of the present invention will be described below with reference to the drawings.

In this embodiment, parts that are the same as or correspond to the belt line structure of the conventional automobile shown in FIG. 1 are designated by the same reference numerals as in FIG. 1, and a description thereof will be omitted.

In this embodiment, an upper end welding flange 12 bent inward in the door thickness direction and further upward in a substantially crank shape at the upper part of the door outer panel 1 and an upper end welding flange 14 of an outer reinforcement panel 13 are welded together. An automobile belt formed by tightening and fixing a belt molding 15 covering the outer surface, upper end surface, and inner surface of these welded welded flanges 12 and 14 to the inner surface of the outer reinforcement panel 13 with screws 6. In the line part structure, the upper end welding flanges 12 and 14 of the door outer panel 1 and the outer reinforcement panel 13 are arc welded at their tips, and the belt molding 15 is attached to the outer reinforcement panel 13 by arc welding. The screw fixing position is
It is located below the overlapping portion of the pair of welding flanges 12 and 14.

Upper end welding flange 1 of the door outer panel 1
The top end height of the outer reinforcement panel 13 is higher than the top end height of the upper end welding flange 14 of the outer reinforcement panel 13, and the upper end welding flange 14 of the outer reinforcement panel 13 at the step portion is formed with a step height. The tip of the welding flange 14 and the inner surface of the tip of the upper welding flange 12 of the door outer panel 1 are arc welded.

In the figure, reference numeral 16 indicates a protector attached to the hemmed outer lower end 15A of the belt molding 15 so as to come into contact with the outer surface of the door outer panel 1, and 17 indicates a weld buildup by arc welding.

In this embodiment, the welding flange 12 side of the door outer panel 1, which is generally thin, is made to protrude higher than the welding flange 14 of the thicker outer reinforcement panel 13, and the step between the two is used to separate the two. The screws 6 for tightening and fixing the belt molding 15 are positioned below these welding flanges 12 and 14, and the fixing allowance for the belt molding 15 is the lower end of the upper welding flange 12. Since they are not located above the belt line, the height of the welding flanges 12, 14 can be significantly reduced, and therefore the height of the belt molding 15 surrounding them can also be reduced. Furthermore, since the welding flange 12 is higher than the welding flange 14, the arc sag during arc welding flows only toward the outer reinforcement panel 13, and thermal distortion due to the arc sag does not occur in the door outer panel 1.

Further, the thickness of the belt molding 15, that is, the dimension in the door thickness direction, can also be significantly reduced since there is no need to include the screws 6 for tightening and fixing the belt molding 15.

Furthermore, in response to the reduction in the height of the belt molding 15, the heights of the inner door inner panel 7, the inner reinforcement panel 8, and the inner weather strip 11 can also be reduced.

Since the present invention is configured as described above, the height of the belt molding and the width in the door thickness direction can be significantly reduced, and therefore, the window glass opening of the door can be enlarged. It has this excellent effect.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional belt line structure of an automobile, and FIG. 2 is a sectional view showing an embodiment of the belt line structure of an automobile according to the present invention. 1... Door outer panel, 12, 14... Welding flange, 13... Outer reinforcement panel, 15... Belt molding, 6... Screw.

Claims (1)

[Scope of utility model registration request] At the upper part of the door outer panel, an upper end welding flange bent inward in the door thickness direction and further upward in a substantially crank shape and an upper end welding flange of the outer reinforcement panel are welded, and the outer surface of the welded welded flange, In an automobile belt line structure in which a belt molding that covers the upper end surface and the inner surface is screwed to the inner surface of the outer reinforcement panel, the height of the tip of the upper end welding flange of the door outer panel is:
The outer reinforcement panel is formed with a step higher than the height of the top end of the upper end welding flange, and the end of the upper end welding flange of the outer reinforcement panel at the step portion and the end of the upper end welding flange of the door outer panel. A belt for an automobile, characterized in that the side surface of the belt molding is welded to the outer reinforcement panel, and the position where the belt molding is screwed to the outer reinforcement panel is below the overlapping part of the pair of welding flanges. Line part structure.