JPH06269871A - Opening and closing body of automobile and production thereof - Google Patents

Abstract

PURPOSE:To simplify the positioning of an inner panel against an outer panel at least for the time until a sealer layer with an adhesive added is hardened, and to improve workability in a hemming work. CONSTITUTION:In the end edge part of an inner panel 2, with a protruding part crushed which is projected against the panel surface that is formed in the proximity to the end edge part of the inner panel 2 by folding the end edge side of an outer panel 3 over the inner panel 2, a projecting part 2b is formed; and with this projecting part 2b abutted on the bent part 3b for folding over the outer panel 3, the inner panel 2 is positioned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing body of an automobile such as a side door, a rear door, a trunk lid and a bonnet which are subjected to a hemming process and a method for manufacturing the same.

[0002]

2. Description of the Related Art Side doors, rear doors,
Opening / closing bodies such as a trunk lid and a hood are formed by an inner panel and an outer panel. In such an opening / closing body, a hemming process is performed in which the peripheral edge portion of the outer panel is folded back onto the peripheral edge portion of the inner panel arranged on the outer panel. In this hemming portion, it is necessary to securely connect the outer panel and the inner panel. For this reason, when both are spot-welded, for example, an indentation during spot-welding occurs on the outer surface of the outer panel, which deteriorates the outer surface state.

Therefore, conventionally, an adhesive is applied between the outer panel and the inner panel to be hemmed, and then the hemming is performed to connect both panels with the adhesive. As this method, for example,
As shown in FIG. 6 (a), caulking holes 51a are formed along the edge of the inner panel 51, and the inner panel 51 is arranged on the outer panel 53 with an adhesive 52. As shown in FIG. 2B, the outer panel 53 is bent so that its predetermined portion corresponds to the hole 51a of the inner panel 51, and then, as shown in FIG. 2C, the outer panel 53 and the hole 51a of the inner panel 51. It is also possible to squeeze.

However, in the above method, the outer panel 53 is provided with the predetermined portion of the hole 51a of the inner panel 51.
It is difficult to accurately position the inner panel 51 and the outer panel 53 in the bending work corresponding to the above. Therefore, in order to solve this problem, JP-A-2-
As disclosed in Japanese Patent No. 59122, a core material made of a quick-drying curing agent is formed on an edge portion of an inner panel arranged on the outer panel, and the inner panel is positioned with respect to the outer panel by the core material. If the hemming process is performed, the outer panel and the inner panel can be accurately positioned.

[0005]

However, in the method of forming the core material and positioning the outer panel and the inner panel as described above, the work for forming the core material is troublesome and the workability is poor. I have a problem.

[0006]

In order to solve the above problems, the opening / closing body for an automobile according to the first aspect of the invention has a hemming process applied to the opening / closing body formed by an inner panel and an outer panel. In an automobile opening / closing body in which the inner panel and the outer panel of the processed portion are connected by an adhesive, the inner panel edge is formed by folding the outer panel end edge side over the inner panel end edge portion. The extruded portion that protrudes against the panel surface formed in the vicinity of the portion is crushed to form a protruding portion,
The inner panel is characterized in that the protruding portion abuts on a bent portion for folding back the outer panel to position the inner panel.

According to a second aspect of the present invention, there is provided a method of manufacturing an opening / closing body for an automobile, in which an inner panel and an outer panel forming the opening / closing body are connected to each other by an adhesive near the edge portions thereof and a hemming process is applied to this portion. In the manufacturing method of the opening / closing body, an extruded portion that protrudes with respect to the panel surface is formed in the vicinity of the end edge portion of the inner panel, and the inner panel and the outer panel are overlapped with an adhesive agent placed between them. , Fold the outer panel end edge side back onto the inner panel and crush the inner panel push-out part so that the inner panel end edge projections formed by this fold contact the outer panel fold-back part. It is characterized by positioning the inner panel.

[0008]

According to the structure of the first aspect, at the end edge portion of the inner panel, a panel surface formed near the end edge portion of the inner panel is formed by folding back the end edge side of the outer panel onto the inner panel. Since the extruded portion that protrudes against is crushed to form a protruding portion, and the inner panel is positioned by contacting the bent portion for folding the outer panel, the protruding portion is positioned at least until the adhesive is cured. During
The inner panel can be easily positioned with respect to the outer panel without the work of providing a core material between the outer panel and the edge portion of the inner panel. As a result, workability in hemming can be improved.

According to the second aspect of the present invention, the extruded portion is formed so as to protrude from the panel surface in the vicinity of the edge portion of the inner panel, and the inner panel and the outer panel are provided with an adhesive between them. When the outer panel is folded back, the edge side of the outer panel is folded back onto the inner panel and the extruded section of the inner panel is crushed, and the protrusion of the inner panel edge formed by this is a bent section for folding the outer panel. Since the inner panel is positioned so that it abuts against the inner panel, similarly, the inner panel is positioned with respect to the outer panel at least until the adhesive is hardened by positioning the inner panel between the edge portion of the inner panel and the outer panel. It can be easily performed without the work of providing. As a result, workability in hemming can be improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. A wagon type automobile has a rear door 1 as an opening / closing body shown in FIGS. 4 (a) and 4 (b) on the back surface, for example. An upper portion of the rear door 1 is attached to the vehicle body so as to be openable and closable, and an opening at a rear portion of the vehicle body is opened and closed.

The rear door 1 is composed of an inner panel 2 and an outer panel 3 as shown in FIG. 5 which is a sectional view taken along the line AA in FIG. The hemming processing portion 4 is subjected to hemming processing. In the hemmed portion 7, the peripheral edge of the inner panel 2 connected to the outer panel 3 by an adhesive-containing sealer layer 7 described later is covered by folding the peripheral edge of the outer panel 3 back onto the inner panel 2. It has become a thing.

A method for manufacturing the rear door 1 having the above structure will be described below. In manufacturing the rear door 1, the inner panel 2 and the outer panel 3 are connected,
Hemming is applied to the peripheral portion. in this case,
As shown in FIGS. 1 (a) and 1 (b), the outer panel 3 is preliminarily formed with a rising portion 3a by raising the peripheral edge portion in the bending direction, while the inner panel 2 is extruded by, for example, a press. Thus, a plurality of extruded portions 2a are formed along the peripheral edge portion at appropriate intervals.

Next, as shown in (a) and (b) of FIG.
In a state where the outer panel 3 is arranged on the processing table 5 for hemming, and the inner panel 2 is almost positioned with respect to the outer panel 3 via the adhesive-containing sealer layer 7 as an adhesive on the outer panel 3. Distribute. At this time,
A gap D is secured between the edge portion of the inner panel 2 and the rising portion 3a of the outer panel 3 in consideration of a protrusion margin of a protrusion 2b described later.

Next, as shown in FIGS. 2 and 3A and 3B, the rising portion 3a of the outer panel 3 is bent toward the inner panel 2 and the rising portion 3a is moved to the inner panel 2 by a pressing die 6 for hemming. The push-out portion 2a of the inner panel 2 is crushed while being bent upward.

When the extruded portion 2a is crushed as described above, a protruding portion 2b of the rising portion 3a in the direction of the bent portion 3b is formed at the end edge portion of the inner panel 2 corresponding to the formation portion of the extruded portion 2a. , The tip of the protruding portion 2b is the bent portion 3 described above.
Contact with b. As a result, the inner panel 2 is positioned with respect to the outer panel 3, and this positional relationship is reliably maintained at least until the adhesive-containing sealer layer 7 is cured. Then, when the adhesive-containing sealer layer 7 is cured, the inner panel 2 and the outer panel 3 are firmly connected in the above state. Further, since the above-mentioned hemming is simultaneously performed at least at the edge portions on one side and the opposite side of the inner panel 2 and the outer panel 3, the inner panel 2 is cured before the adhesive-containing sealer layer 7 is cured. Does not move in the direction opposite to the bent portion 3b of the outer panel 3.

In the manufacturing method as described above, the inner panel 2 can be easily positioned with respect to the outer panel 3, and the workability in the hemming process becomes good.

Since the step of forming a large number of extruded portions on the inner panel 2 can be performed simultaneously in the pressing step of forming the inner panel 2 into a predetermined shape, the number of steps for forming the inner panel 2 can be reduced. Increases can also be avoided. In addition, the manufacturing method described above is not limited to the rear door 1, but may be another opening / closing body such as a side door,
The same can be applied to the manufacture of trunk lids, bonnets, sunroof doors, and the like.

[0018]

As described above, according to the opening and closing body for an automobile of the present invention, the edge of the inner panel is formed by folding back the edge of the outer panel onto the edge of the inner panel. The extruded portion that protrudes against the panel surface formed in the vicinity of the inner portion is crushed to form a protruding portion, and the protruding portion contacts the bent portion for folding back the outer panel to position the inner panel. It has a structure.

With this, at the time of hemming, the inner panel is positioned with respect to the outer panel at least until the adhesive is hardened, without the work of providing a core material between the edge of the inner panel and the outer panel. Easy to do. As a result, workability in hemming can be improved.

According to a second aspect of the present invention, there is provided a method for manufacturing an opening / closing body for an automobile, in which a push-out portion projecting with respect to the panel surface is formed in the vicinity of the edge of the inner panel, and the inner panel and the outer panel are provided with these push-out portions. With the adhesive placed between the two, stack them, fold the outer panel end edge side back onto the inner panel, and crush the inner panel extrusion part,
The inner panel is positioned such that the protrusion of the inner panel end edge portion formed thereby abuts on the bent portion for folding back the outer panel.

Thus, as in the case of the first aspect of the invention, the positioning of the inner panel with respect to the outer panel is performed at least until the adhesive is hardened during the hemming process, between the edge portion of the inner panel and the outer panel. It is possible to easily perform the work without providing a core material and to improve the workability in the hemming process.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, in which FIG. 1 (a) is a vertical cross-sectional view of a main part showing a state in which an inner panel is arranged on an outer panel during hemming, and FIG. 1 (b). Is a plan view of the same.

FIG. 2 is a vertical cross-sectional view of a main part showing a state in which an outer panel is bent from the state shown in FIG.

3 (a) is a vertical cross-sectional view of a main part showing a state in which hemming processing is completed by further bending the outer panel from the state shown in FIG. 2, and FIG. 3 (b) is a plan view thereof.

FIG. 4 (a) is a side view showing a rear door that has been subjected to the above-mentioned hemming process, and FIG. 4 (b) is a front view thereof.

5 is a cross-sectional view taken along the line AA in FIG. 4 (b).

FIG. 6 shows what was previously considered as a method of connecting an inner panel and an outer panel using an adhesive by a hemming process, and FIG. 6 (a) shows the inner panel on the outer panel in the hemming process. FIG. 1B is a perspective view of a main part showing the arranged state, FIG. 2B is a perspective view of the main part showing a state in which the outer panel is bent on the inner panel from the state shown in FIG. It is a longitudinal cross-sectional view showing a state in which an inner panel and an outer panel are caulked.

[Explanation of symbols]

 1 Rear Door (Opening / Closing Body) 2 Inner Panel 2a Extruded Part 2b Projected Part 3 Outer Panel 3b Bent Part 4 Hemming Processed Part 7 Adhesive Sealer Layer (Adhesive)

Claims (2)

[Claims] 1. An opening / closing body of an automobile, wherein an opening / closing body formed by an inner panel and an outer panel is subjected to hemming processing, and the inner panel and the outer panel of the hemmed portion are connected by an adhesive. At the end edge portion, by folding back the end edge portion side of the outer panel onto the inner panel, the push-out portion protruding toward the panel surface formed near the end edge portion of the inner panel is crushed to form a protruding portion. An opening / closing body for an automobile, wherein the inner panel is positioned by bringing the protruding portion into contact with a bent portion for folding back the outer panel. 2. A method of manufacturing an automobile opening / closing body, wherein an edge portion of an inner panel and an outer panel forming the opening / closing body are connected by an adhesive and a hemming process is performed on this portion, in the vicinity of the edge portion of the inner panel. Forming an extruded portion that protrudes with respect to the panel surface at the site, superimpose this inner panel and the outer panel with an adhesive agent placed between them,
Fold back the edge of the outer panel onto the inner panel and crush the extruded part of the inner panel so that the protrusions of the edge of the inner panel formed by this are in contact with the folds for folding the outer panel. Manufacturing method of an automobile opening / closing body for positioning an inner panel.