JP3512119B2 - Joint structure of the body's roof panel and side panel - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for joining and fixing a roof panel and a side panel of an automobile. [0002] In order to simplify the welding work and improve the appearance, the present applicant has previously proposed a joint structure between a roof panel and a side panel in Japanese Patent Publication No. 50-2667. [0003] In this device, a U-shaped groove which is opened upward is formed inside the upper part of a box-shaped cross section formed by a side panel outer and an inner rail, and a stepped flange portion provided on both side edges of a roof panel is formed therein. The T-stud is further welded on the stepped flange, and a body sealer is applied between the stepped flange and the U-shaped groove. At the same time, a roof molding is attached to the T-shaped stud via a resin clip to adjust the appearance of rain in the U-shaped groove and the appearance of this part. Because there is formed a passage, there is room for further improvement in that more man-hours and parts are required after the two panels are welded together. SUMMARY OF THE INVENTION [0004] The present invention has been made in view of such a problem.
It is an object of the present invention to provide a new joint structure in which a process after welding a roof panel and a side panel can be stopped only for rainy weather treatment. Namely SUMMARY OF THE INVENTION The present invention is a joint structure of a vehicle body of the roof panel and the side panels to achieve the above problems, the side panels, the inner
The upper end is bent downward to form a first vertical surface,
Gently bend the lower end of the vertical surface of the
Forming a joint surface, and further bending it loosely to form a groove
1 and the roof panel has an outer edge
Gently bent obliquely downward to form the rainwater flow path surface,
Bending the outer end of the channel surface downward from the first vertical surface
Also has a slightly narrow width and a gap between the first vertical surface and the first vertical surface.
Forming a second vertical surface having a space between the second vertical surface and the second vertical surface;
The second joint surface is bent obliquely downward with the surface facing inward
Forming a substantially L-shaped second joint portion as a whole
And welding the first joint surface and the second joint surface.
Moni, is obtained by Hama charging a body sealer between gap between the first vertical plane and the second vertical plane. An embodiment shown in the drawings will be described below. FIG. 1 is a cross-sectional view taken along the line AA of FIG. 2, that is, a diagram showing a joint portion between a roof panel and a side panel. The upper side of the side panel denoted by reference numeral 1 in FIG.
5 is formed in a box shape in cross section, and the inner upper end of the side panel outer 11 is bent downward to form a vertical surface 12.
Is formed, and the lower end of the vertical surface 12 is further loosely bent obliquely inwardly into a groove shape, and the lower surface of the groove is used as the bonding surface 13, thereby forming a substantially L-shaped bonding portion 24 as a whole. On the other hand, the upper end of the inner rail 15 is
The upper bent surface 16 and the joint surface 13 are integrally joined and fixed by spot welding, and the side panel outer 11 and the inner rail 1 are bent inward.
5 is formed into a box-shaped cross section by being integrally joined by spot welding at the lower ends. On the other hand, with respect to both side edges of the roof panel 2 indicated by the reference numeral 2 in the figure, the portions are bent slightly obliquely downward to form rainwater passage surfaces 21, while the outer ends of the passage surfaces 21 are formed. The portion is bent obliquely downward toward the inside in an L-shape, and the vertical portion thereof is a vertical surface 22 having a width of about 1 mm narrower than the vertical surface 12 of the side panel outer 11, and the horizontal portion is joined to the side panel outer 11. The bonding portion 24 is formed by forming the bonding surface 23 to be bonded to the surface 13. The vertical surface 22 of the roof panel 2 needs to have a width of at least 2 mm from the viewpoint of molding the roof panel 2 and the viewpoint of welding. It is required to be 5 mm or less from the point of completely filling the body sealer 3 with the vertical surface 12 of the side panel outer 11, that is, from the point of filling the body sealer 3 without intervening air. The vertical surface 1 of the side panel outer 11
The body sealer 3 to be applied to the gap between the roof panel 2 and the vertical surface 22 of the roof panel 2 is preferably an epoxy-based sealer containing an epoxy resin, a blocked urethane resin, a latent curing agent, a filler and the like as main components. Vertical surface 12,
The viscosity at room temperature is 1
The mixing ratio of the epoxy resin to the composition is 10 to 70 parts by weight in 100 parts by weight of the composition so as to be 0 to 20 poise.
If it is 70 parts by weight or more, the cured body sealer 3 becomes hard and brittle, and if it is 10 parts by weight or less, sufficient film strength cannot be obtained. As the epoxy resin, an epoxy compound having an average of one or more epoxy groups in one molecule used as a component of an ordinary epoxy resin adhesive (for example, bisphenol A epoxy resin, bisphenol F epoxy resin, Bisphenol AD epoxy resin, phenol novolak epoxy resin, cresol novolak epoxy resin, aliphatic glycidyl ester epoxy resin, aliphatic glycidyl ether epoxy resin, aromatic glycidyl ester epoxy resin, aromatic glycidyl ether epoxy resin, Polyfunctional epoxy resins, various halogen epoxy resins, dimer acid-modified epoxy resins, oil-modified epoxy resins, cycloaliphatic epoxy resins, glycidylamine-type epoxy resins, heterocyclic epoxy resins, hydantoins Epoxy resin, etc.), acrylonitrile-butadiene-modified epoxy resin (for example, bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol AD type epoxy resin, phenol novolak type epoxy resin or bisphenol F type epoxy resin and carboxyl terminal acrylonitrile- Rubber-modified epoxy resin obtained by copolymerizing butadiene copolymer or acrylonitrile-butadiene copolymer), urethane-modified epoxy resin (for example, a terminal obtained from bisphenol A type epoxy resin, polyester polyol and organic polyisocyanate) (A liquid urethane-modified epoxy resin having a skeleton of a copolymer with an isocyanate group-containing urethane-containing urethane prepolymer). The blocked urethane resin can be obtained by blocking an isocyanate compound with a blocking agent for isocyanate. Isocyanate compounds, aliphatic, aromatic, cycloaliphatic or araliphatic polyisocyanate compounds are used, for example, xylylene diisocyanate, isophorone diisocyanate, tolylene diisocyanate, hexamethylene diisocyanate, naphthalene diisocyanate, dicyclohexylmethane diisocyanate and the like is there. Further, compounds having terminal isocyanate groups obtained by reacting these isocyanate compounds with active hydrogen compounds such as polyamine compounds and polyol compounds are also used. Examples of the polyamine compound include ethylenediamine and hexamethylenediamine, and examples of the polyol compound include ethylene glycol, propylene glycol, trimethylolpropane, diethylene glycol, polyhydric alcohols such as glycerin, ethylene glycol, propylene glycol, polypropylene glycol, and trimethylolpropane. Polyether polyols such as compounds obtained by addition polymerization of polyhydric alcohols such as glycerin and alkylene oxides such as ethylene oxide and propylene oxide, and polyether polyols such as ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol, and hexamethylene glycol. Polyhydric alcohols and maleic acid, succinic acid, adipic acid, sebacic acid, tartaric acid, Compounds obtained by condensation brain and polybasic acids and tall acid, or acrylic polyol is used. As the isocyanate compound, a compound containing an isocyanate group at a terminal containing an allophanate bond, an isocyanurate bond, a carbodiimide bond, or the like in a molecule, such as a diphenylmethane diisocyanate condensate, a castor oil and a derivative thereof, and opening of an epoxy group. Or a mixture of two or more epoxy resins to which a hydroxyl group has been added. Examples of the blocking agent for isocyanate include oximes such as acetoxime, 2-butanone oxime, 3-methyl-2-butanone oxime, 2-heptanone oxime, 3-pentanone oxime, cyclohexanone oxime, and acthenone oxime; Lactams such as methyl-β-butyrolactam, β-trimethylbutyrolactam, β-methyl-β caplactam, 2-pyrrolidone, and hydroxamic esters such as oxazolidine, ketimine, and acetohydroxamic acid esters can be used. Then, the composition of the blocked urethane resin with respect to the composition needs to be 10 to 30 parts by weight based on 100 parts by weight of the composition. When the amount is more than the weight part, the cohesive force of the coating film becomes insufficient and cracks occur. As the latent curing agent, a latent curing agent of an epoxy resin and / or a latent curing accelerator that matches the curing conditions is selected. The compounding of the latent curing accelerator with respect to the composition is 5 to 15 per 100 parts by weight of the composition.
If the latent curing accelerator is less than 5 parts by weight, poor curing occurs, and if it is more than 15 parts by weight, the cured film becomes brittle. Further, the filler is not particularly limited, for example, calcium carbonate, talc,
Magnesium carbonate, silicon oxide, titanium oxide, mica,
Graphite, molybdenum disulfide, asbestos, carbon fiber and the like are used. For the composition of the filler, the composition 1
It is necessary to be 5 to 30 parts by weight in 00 parts by weight. If the filler is 5 parts by weight or less, it will sag or flow during heating, and if it is 30 parts by weight or more, the flowability will decrease, and Appearance defects occur. Reference numeral 18 in the drawing denotes a rear quarter glass,
Reference numeral 19 denotes a rear quarter seal, and reference numeral 4 denotes a welding sealer applied between the joint surface 13 of the side panel outer 11 and the joint surface 23 of the roof panel 2. In the embodiment constructed as described above, first, the side panel 1 and the roof panel 2 are joined, and then the joining surface 13 of the side panel 1 and the roof panel 2 are joined.
The welding sealer 4 is interposed between the joining surfaces 23 to join them together, and this portion is spot-welded by a spot welding machine w, w inserted inside. As a result, the outer surfaces of the joints 14 and 24 between the side panel outer 11 and the roof panel 2 are formed as they are as the outer surfaces of the vehicle body having grooves through which rainwater flows. A body sealer 3 made of an epoxy resin or the like is filled in the space 23, and is heated and cured in a drying furnace to perform a rainfall treatment. As described above, according to the present invention, a substantially L-shaped joint is formed on the upper inner surface of the side panel, and the joint is formed inward on the outer edge of the roof panel. Since the substantially L-shaped joints are superimposed and welded, no steps after welding are required except for the treatment of rainy weather, and the number of steps and the number of parts can be greatly reduced. . Moreover, since the vertical surface of the roof panel following the rainwater flow surface is formed narrower than the vertical surface of the side panel, the rainwater flow grooves are formed on both upper portions of the vehicle body at the same time as these are joined. Can be. Further, since the vertical surface of the roof panel is formed to have a width that allows the body sealer to be filled, occurrence of pinholes or the like due to insufficient filling can be suppressed beforehand and rainwater intrusion can be completely suppressed. it can.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view taken along the line AA of FIG. 2 showing a joint structure of a roof panel and a side panel according to an embodiment of the present invention. FIG. 2 is a diagram showing a part of a vehicle body having the above structure. [Description of Signs] 1 Side panel 11 Side panel outer 12 Vertical surface 13 Joint surface 14 Joint 2 Roof panel 21 Flow path surface 22 Vertical surface 23 Joint surface 24 Joint 3 Body sealer 4 Weld sealer

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B62D 25/06

Claims (1)

(57) [Claims 1] The side panel has a first vertical surface formed by bending an inner upper end of the side panel downward, and a lower end of the first vertical surface is further inclined obliquely. To form a first joining surface, and further gently bend to form a first joining portion having a groove. Having a width slightly narrower than the first vertical surface by bending an outer end of the flow surface downward.
And forming a second vertical surface having a gap between the first vertical surface and the second vertical surface, and bending the second vertical surface inward and obliquely downward to form a second joint surface. A second joint part having a substantially L-shape as a whole, welding the first joint surface and the second joint surface, and forming a gap between the first vertical surface and the second vertical surface. The joint structure of the roof panel and the side panel of the car body filled with body sealer.