JPH03251Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a joining structure for panel ends of, for example, automobile door panels, engine hood panels, luggage door panels, and the like.

[Conventional technology]

Conventionally, automobile door panels, engine hood panels, luggage door panels, etc. are composed of an outer panel 10 and an inner panel 30, as shown in FIGS. 5 to 7.
30, the end portion 110 of the outer panel 10 is bent into a U-shape to form a U-shaped bent portion 20.
The end portion 310 of the inner panel 30 is inserted into the U-shaped bent portion 20, and the end portion 310 of the inner panel 30 is sandwiched between the U-shaped bent portion 20 to stack three panels. By spot welding or fixing with an adhesive or the like, a so-called three-ply hemming portion 40 is formed. Also, the end portion 11 of each of these panels 10, 30
Since the hemming portions 40 of Nos. 0, 20, and 310 are often exposed to water such as rainwater or car wash water, the mating surfaces 50 of the hemming portions 40 are coated in order to prevent rust from occurring due to water intrusion or splashing. Paint 610, Structural adhesive 620, Rust prevention wax 6
It is necessary to take anti-rust measures such as applying a rust-preventing material 60 such as No. 30, for example, as shown in FIG. As shown in FIG. 6, the structural adhesive 620 is applied to the hemming part 40 (mating surface 50), or as shown in FIG. ) of the edges 110, 20, 3 of each panel 10, 30.
The hemming portion 40 of No. 10 is configured to take anti-corrosion measures.

[Problem that the invention attempts to solve]

However, in the case of anti-corrosion measures for the hemming portion 40 at the end of the panel shown in FIGS. Part 4
The mating surface 5 of the U-shaped bent portion 20 of the outer panel end 110 and the inner panel end 310 at 0
0 is formed near so-called zero where there is almost no gap, so even if this hemming part 40 is painted, the mating surface 50 (full surface) of the hemming part 40
The paint 610 flows until it becomes impossible to go around, and the mating surface 50 (full surface) of the hemming part 40
The paint 610 for rust prevention cannot be applied to the so-called mating surface 50 of the hemming portion 40, resulting in a problem that the paint 610 hardly covers the mating surface 50 of the hemming portion 40. In addition, as in the configuration shown in FIG.
0 U-shaped bent portion 20 and inner panel end portion 310
A structural adhesive 620 is applied to the mating surface 50 (one mating surface 50) and the hemming portion 40 is bonded by pressure.
When fixing and forming the outer panel end 1
10 U-shaped bent portion 20 and inner panel end portion 31
Since the mating surface 50 with the mating surface 50 has a small gap, the structural adhesive 6 applied to the one mating surface 50
20 is the mating surface 50 including the other mating surface 50
This results in a problem in that the structural adhesive 620 for rust prevention cannot be applied to substantially the entire surface of the mating surface 50 because it is difficult to flow around the entire surface of the mating surface 50 . Furthermore, when pouring and applying anti-rust wax 630 to the hemming portion 40 (mating surface 50) after the so-called completed part is fixed and formed by welding or crimping as in the configuration shown in FIG. Similar to the structure shown in FIG. 6 and FIG. 6, since the gap between the mating surfaces 50 is minute, anti-rust wax 63 is poured into one of the mating surfaces 50.
0 becomes difficult to flow and penetrate (penetrate) substantially the entire surface of the mating surface 50 including the other mating surface 50, and a rust preventive wax 630 is applied to substantially the entire surface of the mating surface 50 for rust prevention. This results in the inconvenience of not being able to do so. Therefore, in any of the configurations shown in FIGS.
Since it is not possible to sufficiently and reliably apply the paint 610, structural adhesive 620, anti-rust wax 630, etc., a problem arises in that the anti-rust performance of the hemming portion 40 is reduced.

Therefore, the purpose of this invention is to prevent the hemming part by flowing the anti-corrosion material over the majority (almost the entire surface) of the mating surfaces of each panel at the hemming part formed at the panel end, and making it fully wrap around and adhere to the hemming part. The objective is to improve rust performance and reliably prevent rust from occurring in the hemming part.

[Means for solving problems]

Therefore, this invention solves the above-mentioned problem by forming a hole or notch in the end of the inner panel that is sandwiched between the U-shaped bent part of the end of the outer panel that forms the hemming part, and applying the anti-rust material to the hemming part. This is an attempt to solve the problem by causing the adhesive to flow around most of the surface (substantially the entire surface) and adhere to it.

More specifically, referring to the reference numerals in FIG. 1, the end portion 11 of the outer panel 1 is bent into a U-shape to form a U-shaped bent portion 2, and this U-shaped bent portion 2 is used to form the inner panel. In the panel end joining structure in which a three-ply hemming part 4 is formed by sandwiching and fixing the ends 31 of the hemming parts 3 and a rust preventive material 6 is applied to the mating surface 5 of the hemming part 4, the above-mentioned U-shaped bent portion 2 of outer panel end portion 11
A hole 7 or a notch 8 (see FIG. 4) is formed in the end portion 31 of the inner panel 3 which is sandwiched between the rust preventive material 6 and the inner panel end portion 31.
It is constructed so that it flows and adheres to most of the mating surface 5 of the hemming part 4 through the hole 7 or notch 8 (see FIG. 4) formed in the hemming part 4.

[Effect]

According to the above-mentioned means, a hole 7 (see FIG. 1) or a cut is formed in the end portion 31 of the inner panel 3 which is sandwiched between the U-shaped bent portion 2 formed at the end portion 11 of the outer panel 1 forming the hemming portion 4. By forming the notch 8 (see FIG. 4), the U-shaped bent portion 2 of the outer panel end portion 11 on both sides of the inner panel end portion 31 in the hemming portion 4 and the inner panel end portion 31 are formed. Since each mating surface 5 can be communicated with the inner panel end 31 through the hole 7 or notch 8 formed in the inner panel end 31, the rust preventive material 6 (paint 61, structural adhesive 62 applied to the hemming part 4) , anti-rust wax 63, etc.) passes through the holes 7 or notches 8 formed in the inner panel end portion 31 and flows toward most (substantially the entire surface) of each mating surface 5 of the hemming portion 4 to be adhered thereto. It is possible,
The rust prevention performance of the hemming portion 4 can be improved.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

The drawings from Fig. 1 to Fig. 4 show examples of this invention, and as shown in Fig. 1 to Fig. 4, various panels such as automobile door panels, engine hood panels, luggage door panels, etc. In the end joining structure, the end 11 of the outer panel 1 is bent into a U-shape to form a U-shaped bent part 2, and the end 31 of the inner panel 3 is sandwiched between the U-shaped bent part 2 to form a spot. A three-ply hemming part 4 is formed by fixing by welding, gluing, crimping, etc., and each of the U-shaped bent part 2 of the outer panel end 11 and the inner panel end 31 in this hemming part 4 is Rust preventive material 6 for rust prevention on mating surface 5
It is configured to apply.

In the panel end joining structure constructed in this manner, as shown in FIGS. 1 to 4, the inner panel is sandwiched between the U-shaped bent portion 2 of the outer panel end portion 11 forming the hemming portion 4. 3 end 31
A hole 7 (see FIGS. 1 to 3) or a notch 8 (see FIG. 4) is formed in the hole 7 or notch 8 (see FIG. 4). A plurality of them are formed at predetermined intervals along the width direction of the end portion 31 of the inner panel 3. Note that the hole 7 or notch 8 formed in the end portion 31 of the inner panel 3 is formed in the end portion 31 of the inner panel 3 as in this embodiment (FIGS. 3 and 4).
A plurality of holes 7 or notches 8 may be formed at predetermined intervals along the width direction of the inner panel 3, and a continuous elongated hole 7 may be formed along the width direction of the end portion 31 of the inner panel 3. Alternatively, the notch 8 may be formed in the form of a continuous long groove. The hole 7 or notch 8 formed in the end portion 31 of the inner panel 3 allows the inner panel to be located between the U-shaped bent portion 2 of the outer panel end portion 11 forming the hemming portion 4 and the inner panel end portion 31. It is configured so that the mating surfaces 5 (that is, minute gaps) on both sides of the end portion 31 are communicated with each other.

When a rust preventive material 6 is applied to the hemming portion 4 configured in this manner, for example, holes 7 are formed in the end portion 31 of the inner panel 3 as shown in FIGS. 1 to 3. To explain the structure in which the hemming part 4 is formed, as shown in FIG.
When coating or pouring the anti-corrosion wax 63 into the hemming part 4, the paint 61 poured into the hemming part 4 by painting or the rust-preventing wax 63 poured into the hemming part 4 will move as shown by the arrow in FIG. At the same time, it flows and adheres to one mating surface 5 of the hemming part 4, and also flows and goes around the other mating surface 5 through the hole 7 of the inner panel end 31. Paint 61 is applied to most (almost the entire surface) of each mating surface 5.
The anti-corrosion wax 6 can be attached (covered) to most of the hemming part 4 (almost the entire surface).
3 can be attached (infiltrated). Further, as shown in FIG. 2, a structural adhesive 62 is applied to the mating surface 5 of the hemming portion 4 (that is, between the U-shaped bent portion 2 of the outer panel end portion 11 and the inner panel end portion 31). When crimping is performed, the structural adhesive 62 applied to one mating surface 5 passes through (extrudes from) the hole 7 of the inner panel end 31 and is applied to the other mating surface 5, as shown in FIG.
By flowing and going around the hemming part 4
The structural adhesive 62 can be made to flow and adhere to most (substantially the entire surface) of each mating surface 5 .

Therefore, when applying a rust preventive material 6 (paint 61, structural adhesive 62, rust preventive wax 63, etc.) to the hemming part 4 for rust prevention measures, the hemming part 4 should be treated as shown in FIGS. 1 and 2. Since the rust preventive material 6 can be flowed over most (almost the entire surface) of each mating surface 5 of the hemmed portion 4 and adhered (coated and penetrated) around it, the rust preventive performance of the hemmed portion 4 is greatly improved. This makes it possible to reliably prevent the occurrence of rust in the hemming portion 4, which is a portion that is often exposed to water such as rainwater or car wash water.

In the above embodiments (FIGS. 1 to 3), the structure in which the hole 7 was formed in the inner panel end 31 was explained, but as shown in FIG.
Even with a configuration in which the notch 8 is formed in the opening 1, the same functions and effects as those described above (FIGS. 1 to 3) can be obtained.

[Effect of idea]

As described above, this invention has a structure in which a hole or a notch is formed in the end of the inner panel that is sandwiched between the U-shaped bent part of the outer panel end that forms the hemming part of the panel end. A rust preventive material such as a paint, a structural adhesive, or a rust preventive wax applied to the hemming part is allowed to flow through the hole or notch formed at the end of the inner panel to most (substantially the entire surface) of the mating surface of the hemming part. Since it can be applied by rotating the hemming part, the rust prevention performance of the hemming part can be greatly improved, and the occurrence of rust in the hemming part can be reliably prevented.

[Brief explanation of drawings]

The drawings from Fig. 1 to Fig. 4 show examples of this invention, and Fig. 1 shows a cross section taken along the line - - in Fig. 3 when the hemming part is coated with a rust-preventing material such as paint or anti-rust wax. Figure 2 is a sectional view equivalent to Figure 1 when a rust preventive material such as structural adhesive is applied to the hemming part, Figure 3 is a perspective view of the hemming part, and Figure 4 is a perspective view of the hemming part.
The figure is a perspective view corresponding to FIG. 3 showing another embodiment of this invention, and the drawings from FIG. 5 to FIG. 7 are sectional views corresponding to FIG. 1 showing a conventional example. 1... Outer panel, 11... End, 2... U
Letter-shaped bent portion, 3... Inner panel, 31... End portion, 4... Hemming portion, 5... Matching surface, 6...
Rust preventive material, 7... hole.

Claims (1)

[Scope of utility model registration request] The end of the outer panel is bent into a U-shape to form a U-shaped bent part, and the end of the inner panel is sandwiched and fixed between the U-shaped bent part to form a three-ply hemming part. In addition, in the panel end joint structure in which a rust preventive material is applied to the mating surfaces of the hemming portion, a hole or a notch is formed in the end of the inner panel that is sandwiched between the U-shaped bent portion of the outer panel end. A panel end joint characterized in that the rust preventive material is made to flow and adhere to most of the mating surface of the hemming part through a hole or notch formed in the inner panel end. structure.