JPH03164385A - Structure of automobile panel end part and manufacture thereof - Google Patents

Abstract

PURPOSE:To position installation of an end part member easily and correctly and avoid obstruction of adhesion by sealer by providing recessed grooves for receiving sealer formed along the length, and binding surfaces formed at a panel end part to be extended from the recessed grooves. CONSTITUTION:A pair of recessed grooves 11a, 11b continuous along the length are provided to be parallel to each other on a wind sound preventing rubber 10, a positioning protrusion 12 is provided in parallel between them, and bonding surfaces 13a, 13b are formed to be continuous with the recessed grooves 11a, 11b respectively in addition. The wind sound preventing rubber 10 is bonded to apply the positioning protrusion 12 to a panel end edge part 2e of a hemming part 2. A panel end part can thus be positioned at its installation position easily and correctly. Where a sealer 3 is extended by a pushing of the wind sound preventing rubber 10, the extended sealer 3 escapes to the recessed grooves 11a, 11b without leaking out, thereby reduction of the sealer effect or obstruction of adhesion of the wind sound preventing rubber 10 can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an automobile panel tip structure (hereinafter simply referred to as "panel tip structure") and a method for manufacturing the same.

BACKGROUND ART As a panel tip structure, for example, taking an engine hood panel as an example, the one shown in FIG. 4 is known (see Japanese Patent Laid-Open No. 62-39373).

This engine hood panel L is formed of an outer panel IS and an inner panel In, and includes an outer panel I.
The tip of s is connected to the inner panel In by hemming.

Further, a sealer 3 made of resin such as vinyl chloride resin is applied to the tip edge 2e of the hemming part 2 formed by the hemming process for waterproofing and rust prevention. The long wind noise prevention rubber 4
It is attached as an "end member".

The wind noise prevention rubber 4 consists of a rubber body 4h and a mounting bracket 4.
It is attached by fixing the mounting bracket 4m to the inner panel in with screws 7.

In addition, in the figure, 5 is a headlamp casing, and 6 is an air duct.

Problems to be Solved by the Invention> As described above, in this conventional panel tip structure, the wind noise prevention rubber 4, which has a two-piece structure consisting of the rubber body 4h and the mounting bracket 4m, is coated with the screw 7 during the vehicle assembly process. I try to screw it to the engine hood panel l, but I would like to avoid doing this if possible from the standpoint of parts management and material costs.

To this end, it is conceivable to form a wind noise prevention rubber using only the rubber body 4h, and to directly adhere this to the painted engine hood panel l during the vehicle assembly process. However, if something like the rubber body 4h is simply bonded directly, even if it is elastic, the cured sealer 3 may protrude or bulge on the adhesive surface, causing adhesion inhibition or the cured sealer 3 Therefore, there are problems such as difficulty in accurately positioning the bonding position. Therefore, in reality, the two-piece structure of the rubber body 4h and the mounting bracket 4m is not changed, but a compromise measure is taken in which the mounting bracket 4m is simply fixed to the inner panel in by adhesive. However, it cannot be said that the advantages of the adhesive method are fully utilized.

Therefore, in this invention, problems such as adhesion inhibition caused by the hardened sealer 3 and accurate positioning of the adhesion position are solved, and a panel tip structure and its structure are provided that allow one-piece items such as the rubber body 4h to be directly adhered. The purpose is to provide a manufacturing method.

Measures to solve the problem〉 Specifically, one panel edge is hemmed so that the edge of one panel is overlapped with the edge of the other panel and the edge of one panel is folded to the other side. In a panel tip structure in which a sealer is applied to the edge of the panel and a long end member is attached along the hemming part, the end member is formed in an elongated direction and receives the sealer. The present invention provides a panel tip structure having a concave groove extending to the rear of the concave groove and an adhesive surface formed by extending to the rear of the concave groove from the panel tip, and also attaching the edge of the other panel to the tip of one panel. After applying a sealer so as to cover one panel edge of the hemmed panel tip that overlaps and folds one panel edge to the other side, before the sealer hardens, insert a groove from above the sealer. Provided is a method for manufacturing a panel tip structure in which a long end member having a long length is attached and then the panel is painted together, and the end member is further attached to the panel tip with a thermosetting material. To provide a method for manufacturing a panel tip structure, which is heated during pasting and subsequent painting steps.

<Function> According to this panel tip structure, the concave groove of the end member provides an escape area for the sealer, so the installation position of the end member can be easily and accurately determined, and the adhesive surface to the panel tip is attached to the concave groove. Since the sealer is shaped so as to extend rearward, adhesion will not be inhibited by the sealer.

In addition, according to this manufacturing method for the panel tip structure, the long end member having the groove is pasted on top of the sealer before the sealer hardens, so the installation position of the end member can be easily and accurately positioned. In addition, since the end members are not inhibited by the sealer and the panels are then painted together, the appearance is improved.

Furthermore, since the end member is attached to the front end of the panel using a thermosetting material and heated in the subsequent painting process, stronger adhesive strength can be obtained.

Example of implementation Hereinafter, one embodiment of the present invention will be described based on the drawings.

In the following description, parts common to those of the conventional example described above are given the same reference numerals, and redundant descriptions are omitted as appropriate.

This embodiment relates to an engine hood panel 1, similar to the conventional example described above, and is an example in which a wind noise prevention rubber 10 made of polychloroprene rubber is used as an "end member".

As shown in FIGS. 1 and 2, the wind noise prevention rubber 10 has a pair of concave grooves 11a that are continuous grooves in the longitudinal direction.
llb are provided parallel to each other, and both grooves 1
Between 1a and llb, a positioning protrusion 12 is provided with a double concave groove 11a,
The adhesive surfaces 13a, 1lb are provided in parallel with the grooves 11a, 1lb, and are connected to the grooves 11a, 1lb.
3b is formed.

This wind noise prevention rubber 10 is attached to an engine hood panel 1 that has been undercoated with cationic electrodeposition. First, a sealer 3 made of vinyl chloride resin is applied to the panel edge 2e of the hemming part 2. , before this sealer 3 hardens, the grooves 11a, . It is bonded to the engine hood panel l with a thermosetting adhesive l4 via an adhesive surface 13a formed on the rearward extending portion of 1lb. Note that a thermosetting double-sided adhesive tape may be used instead of the thermosetting adhesive l4.

At this time, the wind noise prevention rubber 10 is bonded so that the positioning protrusion 12 comes into contact with the panel edge 2e of the hemming part 2, so that the mounting position can be easily and accurately determined. Ru.

Also, at this time, the sealer 3 is stretched by pressing the wind noise prevention rubber IO, but the stretched sealer 3 escapes into each groove 11a, llb, so it protrudes outside and the sealer effect is reduced. Rubber IO to prevent noise and wind noise
It does not cause any adhesion inhibition.

Then, the engine hood panel l to which the wind noise prevention rubber lO is attached in this way is coated with an intermediate coat and a top coat. The thermosetting adhesive 14 is also completely cured in the heating process during this coating. In addition, this finally results in the wind noise prevention rubber IO
The engine hood panel 1 will also be painted in the same color as the engine hood panel 1, improving its appearance.

In addition, since both the sealer 3 and the thermosetting adhesive 14 have a certain degree of adhesiveness, the wind noise prevention rubber 10 will not fall off before the heating process. Depending on the case, the adhesive surface 13b may also be bonded to provide greater reliability.

<Effects of the Invention> As explained above, the panel tip structure according to the present invention includes a groove formed in the longitudinal direction for receiving the sealer, and a groove extending rearward from the panel tip. Since an end member having a formed adhesive surface is used,
The concave groove of the end member provides a place for the resealer to escape, making it possible to easily and accurately position the end member, and because the adhesive surface to the panel tip extends to the rear of the concave groove. This also has the effect of avoiding adhesion inhibition caused by the sealer.

Further, the method for manufacturing the panel tip structure according to the present invention includes:
As explained above, after applying the sealer and before the sealer hardens, a long end member with a groove is pasted on top of the sealer, and then the panel is painted, so the end It has the effect of making it possible to easily and accurately position the parts, and it also has the effect of preventing the adhesion of the end members from being inhibited by the sealer and improving the appearance. This material is attached to the tip of the panel and heated during the subsequent painting process, which has the effect of providing even stronger adhesion.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of an engine hood panel provided with a panel tip structure according to the present invention, and FIG. 2 is a diagram showing a state before wind noise prevention rubber is attached as an end member. Corresponding schematic sectional views: FIG. 3 is a schematic perspective view showing the front of the automobile, and FIG. 4 is a schematic sectional view taken along the line IV--IV in FIG. 3. l・・・・・・-・Engine hood panel (Hanel) I
s・1〜---・Outer panel (one panel) In
−−・１・・・Inner panel (other panel) ２−・−
・-・・Hemming part 2e・・・・Panel edge portion 3・・・・Sealer IO−・・・・・・One-wind noise prevention rubber (end member) 11
a, llb=-----one groove 13a, 13
b・゜・−・・Adhesive surface l4・・・・・Adhesive

Claims (3)

[Claims] (1) Applying a sealer to one panel edge of the panel edge that has been hemmed so that the edge of one panel overlaps the edge of the other panel and folds the edge of one panel to the other side, Furthermore, in an automobile panel tip structure in which a long end member is attached along the hemming portion, the end member has a concave groove formed in the longitudinal direction to receive the sealer, and a concave groove formed in the longitudinal direction to receive the sealer, and An automobile panel tip structure characterized by having an adhesive surface extending to the rear of a concave groove. (2) Apply a sealer to cover the edge of one panel at the edge of the panel where the edge of one panel is hemmed to overlap the edge of the other panel and fold the edge of one panel to the other side. After that, before the sealer hardens, a long end member having a concave groove is pasted on top of the sealer, and then the panel is painted together. (3) In claim (2), the front end of an automobile panel is characterized in that the end member is pasted to the front end of the panel using a thermosetting material and heated in a subsequent painting process. Method of manufacturing the structure.