JPH06115458A - Roof structure for automobile - Google Patents

Abstract

PURPOSE:To reduce number of parts required to hide nuggets by spot welding. CONSTITUTION:A groove section 11 for the rain gutter of a roof panel 1 is joined with the flange 23 of a roof side inner rail 2 via structural adhesives 3. This constitution thereby eliminates generation of nuggets by spot welding in the appearance of the roof panel, and therefore it also eliminates a need for ornamental parts such as a roof moldings. Since a bonding surface produced by structural adhesives 3 is formed over a section close to the groove section 11 which is high in surface stiffness in particular out of the roof panel 1, the occurrence of surface strain in the roof panel 1 can be restrained, which is caused by the expansion/contraction of adhesives 3 when it is hardened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile roof structure, and more particularly to a side structure of an automobile roof which is bonded by using a structural adhesive.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, the roof structure of an automobile has roof panels 41, 4 at the upper side edge of the vehicle.
2 and the roof side inner rail 43 are spot-welded at the rain gutter portion 48 to form a skeleton by both members. Further, in this case, another component such as the roof molding 44 is used to cover up the spot mark 46 generated on the appearance by the spot welding (see Japanese Utility Model Laid-Open No. 2-25342).

[0003]

In the above-mentioned prior art, in order to hide the spot mark 46, the roof molding 44 for forming an external appearance design, the clip 45 for engaging the roof molding 44 with the rain gutter portion 48, and the panel alignment. There is a problem in that a sealing material 47 or the like for preventing water leakage from the parts is structurally necessary, which causes an unavoidable increase in the number of parts and weight. The present invention has been made to solve the above problems, and the problem to be solved by the present invention is to eliminate the number of parts for concealing spot marks by coupling only between mating surfaces. is there.

[0004]

In order to solve the above problems, the first automobile roof structure of the present invention employs the following means. That is, a roof panel that forms a part of a closed cross-section skeleton member formed in the vehicle upper side portion and that has a recess for a rain gutter that extends along the vehicle front-rear direction, and a vehicle upper side portion along the vehicle front-rear direction. In a roof structure of an automobile having a roof inner rail that extends and forms a closed cross-section skeleton member by coupling with the roof panel, a recess is provided at a vehicle width direction inner end of the roof inner rail, and a recess of the roof inner rail. A structural adhesive is interposed between the concave portion of the roof panel and the concave portion of the roof panel to firmly bond both members.

Further, the roof structure of the second automobile employs the following means. That is, a roof panel that forms a part of a closed cross-section skeleton member formed on the vehicle upper side edge and that has a substantially V-shaped groove for a rain gutter that extends along the vehicle front-rear direction, and a vehicle on the vehicle upper side edge. In a roof structure of an automobile having a roof side inner rail that extends along the front-rear direction and that forms a closed cross-section skeleton member by coupling with the roof panel, in a vehicle width direction inner end portion of the roof side inner rail, Both members are formed in a substantially V-shape corresponding to the groove, and a structural adhesive is interposed between the groove and the groove of the roof panel to firmly bond both members.

[0006]

According to the first vehicle roof structure means of the present invention described above, since the roof panel and the roof side inner rail are connected by the structural adhesive, spot marks are formed on the outer surface of the roof panel which is the outer plate. Therefore, a separate component for covering the spot marks is not required. Furthermore, since the adhesive surface of the structural adhesive is formed in the vicinity of the curved rain gutter recess, which has a particularly high surface rigidity in the roof panel, surface distortion of the roof panel caused by expansion and contraction of the adhesive when the adhesive is cured Occurrence can be suppressed.

According to the second vehicle roof structure means of the present invention, in addition to the above-described actions, the following actions are also obtained. That is, since the structural adhesive is applied to the end portion of the roof side inner rail formed in a substantially V shape and is joined to the roof panel, the application position of the adhesive agent by the robot or the like is temporarily changed to the end portion of the roof side inner rail. Even if the vehicle is displaced in the vehicle width direction, the adhesive will be closer to the center of the substantially V-shaped groove due to its own weight, and the structural adhesive can be prevented from protruding from the end of the roof inner rail.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A first embodiment of the present invention will be described with reference to FIGS.
It will be described based on. FIG. 3 is a side view of the vehicle, and FIG.
FIG. 4 is a sectional view of a main part taken along line I-I of FIG. 3. 1 in the figure
Is a roof panel, 2 is a roof side inner rail, and 3 is a structural adhesive. As the structural adhesive, a one-component epoxy resin thermosetting adhesive is used. As shown in FIG. 1, the roof panel 1 has a groove portion 11 for a rain gutter, which has a substantially V-shape for guiding rainwater flowing into both side edges of the roof in the vehicle front-rear direction. Roof panel 1
A flange 12 is provided on the side end of the vehicle, and is spot-welded to one end flange 22 of the roof side inner rail 2 extending in the vehicle front-rear direction. The other end flange 23 of the roof side inner rail 2 is the roof panel 1
Is bonded to the inclined surface of the gutter groove 11 via a structural adhesive 3. As a result, a skeleton having a closed cross section is formed on the side edge of the roof by the two panels of the roof panel 1 and the roof side inner rail 2, and the rigidity of the side edge of the roof is secured similarly to the conventional vehicle. There is.

A drip seal 4 is fitted in a welded portion of the flange 12 of the roof panel 1 and the flange 22 of the roof side inner rail 2, and one end of the drip seal 4 abuts on the windshield 5 to seal it. ing.

In this embodiment, since the gutter groove portion 11 of the roof panel 1 and the flange 23 of the roof side inner rail 2 are joined together via the structural adhesive 3, the roof panel 1 has the following appearance. No welding marks are generated, and thus decorative parts such as a roof molding are not required. Further, since the bonding surface of the structural adhesive 3 is formed in the vicinity of the groove portion 11 having particularly high surface rigidity in the roof panel 1, occurrence of surface strain of the roof panel 1 caused by expansion and contraction of the adhesive when the adhesive is cured is suppressed. it can. Furthermore, since the closed cross-section skeleton of the roof side edge is formed by only two panels, the roof panel 1 and the roof side inner rail 2, no other panel is required, and therefore the weight of the panel is reduced.

Next, a second embodiment of the present invention will be described with reference to FIG. 2 is a cross-sectional view corresponding to FIG. 1 described above, and the same portions as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. As shown in FIG. 2, one end flange 24 of the roof side inner rail 2 has a V-shape corresponding to the groove 11 of the roof panel 1. The structural adhesive 3 is applied to the end flange 24 of the roof side inner panel 2 by a robot (not shown), and the roof panel 1 is placed on the roof side inner rail 2 after the application. As a result, the end flange 24 of the roof side inner rail 2 is adhesively bonded to the substantially V-shaped groove 11 of the roof panel 1.

According to the present embodiment, even if the application position of the structural adhesive 3 by the robot or by hand is shifted to the left or right in the drawing, the structural adhesive is placed in the center of the end flange 24 due to its own weight. I will stop by. Therefore, when the roof panel 1 is placed, the structural adhesive 3 comes to the intended position, and it is possible to prevent the adhesive from protruding from both ends of the joint flange of the structural adhesive 3.
As a result, it is possible to prevent the wire harness (not shown) arranged in the closed cross section formed by the roof panel 1 and the roof side inner panel 2 from being damaged, and prevent the structural adhesive from overflowing the floor plate of the automobile. Eliminates the need to wipe the adhesive.

[0013]

As described above, the automobile roof structure of the present invention does not impair the appearance quality of the roof panel, so that no other decorative parts are required and the cost can be reduced. Further, in the roof structure of the automobile of the second invention, it is possible to prevent the structural adhesive from squeezing out from the joint flange surface, and there are excellent effects such as the elimination of the adhesive wiping operation and the prevention of damage to the wire harness.

[Brief description of drawings]

FIG. 1 shows a first embodiment of the present invention and is a cross-sectional view of a main part taken along line I-I of FIG.

FIG. 2 shows a second embodiment of the present invention and is a sectional view corresponding to FIG.

FIG. 3 is a side view of an automobile according to the present invention.

FIG. 4 shows a conventional technique and is a cross-sectional view corresponding to a line II in FIG. 3.

[Explanation of symbols]

 1 ・ ・ ・ Roof panel 2 ・ ・ ・ Roof side inner rail 3 ・ ・ ・ Adhesive 11 ・ ・ ・ Groove 23 ・ ・ ・ Flange 24 ・ ・ ・ Flange

Claims (2)

[Claims] 1. A roof panel which forms a part of a closed cross-section skeleton member formed on an upper side edge of a vehicle and has a groove for a rain gutter extending along a front-rear direction of the vehicle, and a front-rear direction of the vehicle on an upper side edge of the vehicle. A roof structure of a vehicle having a roof side inner rail that extends along the roof panel and forms a closed cross-section skeleton member by coupling with the roof panel, wherein a vehicle width direction inner end portion of the roof side inner rail and a groove portion of the roof panel are provided. A vehicle roof structure characterized in that a structural adhesive is interposed between the two members to firmly bond both members. 2. A roof panel having a substantially V-shaped groove portion for a rain gutter, which constitutes a part of a closed cross-section skeleton member formed at an upper side edge of the vehicle and extends along the vehicle front-rear direction, and an upper side of the vehicle. In a roof structure of an automobile having a roof side inner rail that extends along the vehicle front-rear direction at an edge and forms a closed cross-section skeleton member by coupling with the roof panel, a vehicle width direction inner end portion of the roof side inner rail is provided. An automobile roof characterized by being formed in a substantially V-shape corresponding to the groove portion of the roof panel and by firmly interposing both members by interposing a structural adhesive between the groove portion of the roof panel. Construction.