JPS646385Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the welding of the main and sub-roof panels in the roof structure of an automobile, particularly in an automobile having a roof panel consisting of a main and sub-roof panel. This invention relates to a structure for preventing a roof panel from deforming due to distortion.

[Prior art]

Generally, a roof panel of an automobile is connected to a roof side rail by welding, but welding distortion is likely to occur during welding. Therefore, conventionally, as a roof structure to prevent the roof panel from deforming due to this welding distortion,
As described in the publication, a bead is provided along the connection line near the connection between the roof panel and the inner edge of the roof rail, and the welding distortion is absorbed by the bead. . However, this conventional structure has a problem in that the bead is formed in a position that is easily visible from the outside of the roof panel, which is not desirable in terms of design and spoils the appearance.

By the way, some automobile roof panels are made by welding a main roof panel and a sub-roof panel, and of course the above-mentioned welding distortion is likely to occur even in this welding. When a strain absorbing bead of the conventional structure is provided, two lines are formed on the roof panel: the bonding line between the two panels and the bead, which also impairs the appearance.

[Purpose of invention]

The present invention was developed in light of this conventional situation, and provides an automobile roof structure that can eliminate the influence of spot welding on the outer surface of the vehicle body and that does not impair the appearance due to welding strain absorbing beads. is intended to provide.

[Structure of the idea]

The present invention is directed to an automobile having a roof panel in which joining flanges are formed downwardly at the ends of both the main and auxiliary roof panels, and the flanges are joined together by spot welding at multiple locations in the longitudinal direction. , a bead is provided along the longitudinal direction of the joining flange on the inside of the vehicle (towards the center of the vehicle) from the spot welded portion of the main roof panel;
A protrusion protruding upward is formed between the spot welds of the joining flange, and a molding is placed on the protrusion so as to fit into the groove formed by both flanges to cover the upper part of the bead. Something,
This prevents the effects of spot welding from appearing on the outer surface of the vehicle body, and the bead is located at the joint between the two flanges to make it less noticeable.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 3 show an embodiment of the present invention. In the figures, 1 is an automobile to which the structure of this embodiment is applied, and the roof panel 2 of this is a main roof disposed in the center of the vehicle body. It is comprised of a panel 3 and sub-roof panels 4 disposed on the left and right sides of the main roof panel 3 along the longitudinal direction of the vehicle body.

At the left and right ends of the main roof panel 3, approximately flat plate-shaped main joint flanges 3a are bent downward and formed in a stepped manner. ) 3b are provided protrudingly at predetermined intervals.

Furthermore, a substantially L-shaped sub-joint flange 4a is formed at the vehicle-side end of the sub-roof panel 4 by being bent downward. A roof rail joint flange 4b is bent and formed at the outer side end of the sub-roof panel 4, and both joint flanges 4a, 4b of the sub-roof panel 4 include:
The joining flanges 8a and 8b of the roof rail inner 8 extending in the longitudinal direction of the vehicle body are welded and joined, thereby connecting the sub-roof panel 4 and the roof rail inner 8.
A closed cross section extending in the longitudinal direction of the vehicle body is formed. The tips of the main and auxiliary joining flanges 3a, 4a are welded and fixed to each other, so that both the joining flanges 3a, 4a form a groove 10 projecting downward.

A roughly S-shaped bead 3c is formed in a portion of the main joining flange 3a on the inside of the vehicle from the joining portion, and is bent along the joining direction of the flanges 3a and 4a, that is, along the longitudinal direction of the vehicle body.

Further, a roof molding 5 is fitted into the groove 10 formed by the main and sub-joining flanges 3a and 4a, and the molding 5 is formed into a rod shape using rubber, and its lower end has a flat surface. The portion 5a is adhered to the molding adhesive seat 3b with an adhesive tape 6, and the protrusion 5b protruding adjacent to the flat portion 5a is attached to the main and sub-junctions on the bottom surface of the groove 10 with an adhesive 7. The upper surface portion 5c is bonded to the connecting portion of the flanges 3a, 4a, and is substantially flush with the main roof panel 3, and the upper surface portion 5c and the sub-roof panel 4 are at different levels. Part of it is a rain rail. Note that 9 is a sealer for preventing rainwater from entering the vehicle interior from the joint between the main and sub-joint flanges 3a and 4a.

Next, the effects will be explained.

Also in this embodiment, the main and sub roof panels 3,
4. Welding distortion occurs due to the welding and joining of the respective joining flanges 3a, 4a, and 8a of the roof rail inner 8, but in this embodiment, the distortion in the vehicle width direction due to spot welding is absorbed by the bead 3c. It is possible to prevent the main roof panel from deforming due to the distortion, and the distortion between the spot welds is absorbed by expanding and narrowing the back opening of the molding adhesive seat 3b, and the molding ,
Since the lower surface and the flange surface are not in contact with each other, they are not affected by the swelling of the flange near the spot weld, which prevents deformation of the molding caused by spot welding, and as a result, spot weld distortion. It is possible to eliminate the influence on the outer surface of the vehicle body. Moreover, the bead 3c is the joining flange 3 of the main and sub-roof panels 3 and 4.
Since the bead 3c is provided in the groove 10 formed by the bead 3c and the roof molding 5 is fitted into the groove 10, the bead 3c is not visible from the outside. The bead 3c can prevent the appearance from being damaged.

Further, in this embodiment, a rain rail is formed by the roof molding 5 and the auxiliary roof panel 4, and rainwater and the like are drained in the longitudinal direction of the vehicle body by the rain rail. Furthermore, in this embodiment, the joint between the main and sub-joint flanges 3a and 4a is double sealed with the sealer 9 and the adhesive 7, so that the sealing performance can be greatly improved.

[Effects of the invention] As described above, according to the automobile roof structure according to the invention, both joining flanges formed downward in steps at the ends of both the main and auxiliary roof panels are spotted at multiple locations in the longitudinal direction. The main roof panel is joined by welding, and a bead is provided along the longitudinal direction of the joining flange on the inner side of the vehicle (vehicle center side) from the spot welding part of the main roof panel, and a protrusion that protrudes upward between the spot welding parts of the joining flange. A molding is placed on this protruding part so as to fit into the groove formed by both flanges to cover the upper part of the bead, thereby eliminating the influence of spot welding on the outer surface of the car body. Moreover, the appearance is not impaired by the welding strain absorbing beats.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an automobile to which an automobile roof structure according to an embodiment of the present invention is applied, Fig. 2 is a cross-sectional view taken along the line - - of Fig. 1, and Fig. 3 is before mounting of the molding in the above embodiment. FIG. 2... Roof panel, 3... Main roof panel,
3a...Joining flange, 3c...Bead, 4...
Secondary roof panel, 4a...joint flange.

Claims (1)

[Scope of utility model registration request] In an automobile having a roof panel composed of a main roof panel and a sub-roof panel, joining flanges are formed downwardly at the ends of the main roof panel and the sub-roof panel, and the joining flanges extend in the longitudinal direction. A groove is formed by spot welding at multiple locations on the main roof panel, and a bead is provided along the longitudinal direction of the joining flange on the inside of the vehicle from the spot welding part of the joining flange of the main roof panel. A protrusion projecting upward is formed between the spot welds, and a molding that is fitted into the groove and covers an upper part of the bead is placed on the protrusion. Automobile roof structure.