JPH0253677A - Roof assembly method for automobile - Google Patents

Abstract

PURPOSE:To improve a flash feeling of appearance, while contriving assembly work of a car body, by connecting a roof side rail outer panel to the end part of a roof panel and performing subassembly thereafter connecting a roof side rail inner panel to this outer panel. CONSTITUTION:In assembly of an automobile for its roof side part, first a bottom end flange 2b of an outer panel 2 in a roof side rail 1 is connected to an extension end part 7a of a roof panel 7 by spot welding in a part W1, and subassembly is performed of both the roof panel and outer panel. Subsequently, these subassembled roof panel 7 and outer panel 2 in the roof side rail 1 are dropped to its inner panel 4 as shown by an arrow head. Thereafter, both upper and bottom end flanges 2a, 2b of the outer panel 2 in the roof side rail 1 and both upper and bottom end flanges 4a, 4b of the inner panel 4 are connected by spot welding in parts W2, W3 by use of a spot welder 12, and the assembly is finished.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method for assembling an automobile roof.

[Prior art and its issues]

The first example of the structure of the roof part of a conventional automobile is No. 6.
There is something like the one shown in the figure.

That is, in this figure, reference numeral 1 denotes a roof side rail as a strength member on the side of the vehicle body, which is vertically installed in the longitudinal direction of the vehicle body with an outer panel 2 and an inner panel 4 forming a box-shaped cross section 5. 6 is roof side rail outer panel 2
A drip channel joined to the roof panel 7 and forming a roof drip 8 on the outside of the roof side rail 1. 9 is a drip molding for hiding the joint between the roof panel 7 and the drip channel 6.

However, in this structure, a bird or pumole 9 is required to hide the joint between the roof panel 7 and the drip channel 6, which impairs the flashy appearance.

A second example of the structure of a conventional roof portion of an automobile is shown in FIG.

That is, in this example, the end of the roof panel 7 is joined to the upper end joining flange 1a of the roof side rail 1 consisting of the outer panel 2 and the inner panel 4, and the joined part is hidden from the general surface of the roof panel 7. A roof molding 10 is provided.

However, even with such a structure, the roof molding 10 is required, which also impairs the flash appearance.

Furthermore, a third example of the structure of the conventional roof portion of an automobile that improves the appearance of the roof is shown in FIG. 8.

That is, in this example, the end of the roof panel 7 is connected to the roof side rail 1 consisting of the outer panel 2 and the inner panel 4.
extends to cover the outer panel 2 of the
a to the lower end joint flange 1b of the roof side rail 1;
It is joined to.

However, with such a structure, during the vehicle body assembly process, the extended end of the roof panel 7 is located inside the roof side rail l, so the roof panel 7 cannot be vertically dropped and set. However, there was a problem that the workability was extremely poor.

Therefore, a fourth example as shown in FIG. 9 was devised as a structure that improves the flash feeling and also improves workability in the car body assembly process.

That is, in this example, in the third example, a part of the outer panel 2 of the roof side rail 1 is made into a vertical wall, and the extended end 7a of the roof panel 7 is joined to the lower end joining flange 1b located on the outside of the roof side rail 1. It is something.

However, even with such a structure, there is still a problem that the effective cross-sectional area of the roof side rail 1 is insufficient, so that the rigidity of the roof panel 7, which is the vehicle body roof, is insufficient.

In addition, the basic structure similar to each side mentioned above is, for example,
It is disclosed in Japanese Patent No. 14171.

The present invention has been made by focusing on each of the problems of the conventional example, and is an automobile roof assembly that aims to improve the workability of assembling the car body 6, as well as improve the flush appearance of the exterior and the rigidity of the car body shed. The purpose is to provide a method.

[Means to solve the problem]

In order to achieve such an object, the present invention extends the end of a roof panel to cover a roof side rail, and connects the extended end to a lower end joining flange located inside the side end of the roof side rail. In the assembly method, the roof side rail outer panel is first joined to the roof panel to form a subassembly, and then the roof side rail inner panel is joined to the roof side rail outer panel. .

[For production]

Although the extended end of the roof panel is joined to the lower end joining flange located inside the side end of the roof side rail,
First, since the roof panel and the roof side rail outer panel are sub-assembled, assembly becomes easy and workability in the vehicle body assembly process is significantly improved.

Further, since the extended end of the roof panel extends to cover the roof side rails and there is no molding in some parts of the roof panel, a flashy appearance can be achieved.

Furthermore, the extended end of the roof panel can be joined to the lower end joining flange located inside the side end of the roof side rail, and the side end of the roof side rail can be positioned close to the extended end of the roof panel. , the effective cross-sectional area of the roof side rail can be expanded, the cross-sectional rigidity of the roof side rail can be significantly improved, and the rigidity of the roof panel, which is the roof of the vehicle body, can be improved.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

Note that the same parts and parts as in the conventional example are given the same reference numerals.

In Fig. 1, reference numeral 1 denotes a roof side rail as a strength member on the side of the vehicle body, an outer panel 2 and an inner panel 4.
It forms a box-shaped cross section 5 and is vertically installed in the longitudinal direction of the vehicle body. Reference numeral 7 designates a roof panel, the end of which extends to cover the outer panel 2 of the roof side rail 1, and the extended end 7a of the roof panel is joined to a lower end joining flange 1b located inside the side end of the roof side rail 1. ing.

When assembling such a roof side part, the present invention first joins the lower end flange 2b of the outer panel 2 of the roof side rail 1 to the extended end 7a of the roof panel 7 by spot welding W1, as shown in the second figure. Both 7 and 2 are sub-assembled, and then the sub-assembled roof panel 7 and the outer panel 2 of the roof side rail 1 are dropped into the inner panel 4 of the roof side rail 1 as shown by the arrow, and then as shown in FIG. As shown, the upper and lower end flanges 2a and 2b of the outer panel 2 and the upper and lower end flanges 4a and 4b of the inner panel 4 on the roof side rail l are joined by spot welding W2W3 using a spot welding machine 12.

In FIG. 1, 14 is a weather strip that comes into elastic contact with the door window glass 15 to seal the interior and exterior of the vehicle when the door is closed, and 16 is an interior garnish.

Before assembling the roof part as described above,
The structure of the rear end (the part surrounded by 9 ■ and ■) is as shown in FIG. That is, the front end is the roof panel 7,
Roof side rail outer panel 2. The end portions of the three parts of the front pillar outer panel 17 are joined together by brazing (brass soldering). In this figure, the trident-shaped joint 8 is formed separately from the roof side rail inner panel 4 and joined, but it goes without saying that these may be formed integrally.

On the other hand, the rear end portions circled by ■ are also omitted from illustration, but are similar to the roof panel 7, roof side rail outer panel 2.
The end portions of the rear fender outer panel 19 are connected by brazing.

As described above, although the present invention joins the extended end of the roof panel 7 to the lower end joining flange 1b located inside the side end of the roof side rail 1, the roof panel 7 and the roof side rail outer panel 2 are first assembled into a subassembly. Therefore, assembly becomes easy and workability in the vehicle body assembly process is significantly improved.

Further, since the extended end portion of the roof panel 7 extends to cover the roof side rail 1 and the roof panel 7 does not have some moldings unlike the conventional example, a flashy appearance can be achieved.

Furthermore, the extended end of the roof panel 7 can be joined to the lower end joining flange 1b located inside the side end of the roof side rail 1, and the side end of the roof side rail 1 can be connected to a position close to the extended end 7a of the roof panel 7. Therefore, the effective cross-sectional area of the roof side rail 1 can be expanded, and the cross-sectional rigidity of the roof side rail 1 can be significantly improved, and the rigidity of the roof panel 7, which is the vehicle body shed, can be improved. This is the translation.

〔effect〕

As described above, according to the present invention, the end of the roof panel is extended to cover the roof side rail, and the extended end is attached to the lower end joining flange located inside the side end of the roof side rail. In the roof assembly method of joining, the roof side rail outer panel is first joined to the roof panel to form a subassembly, and then the roof side rail inner panel is joined to the roof side rail outer panel. This provides the effect of improving the flash appearance of the exterior and the rigidity of the vehicle body shed while improving the workability of the vehicle body assembly.

[Brief explanation of the drawing]

FIG. 1 is a sectional view corresponding to FIG. 6 of the roof side part according to the present invention, FIGS. 2 and 3 are explanatory sectional views showing the method of the present invention in the order of steps, and FIG. FIG. 5 is a schematic perspective view of the automobile, and FIGS. 6 to 9 are Vl of FIG. 5 showing the first to fourth conventional examples, respectively.
-Vl line sectional view. 1...Roof side rail, 1b...
Lower end joining flange, 2... Roof side rail outer panel, 4... Roof side inner panel, 7... Roof panel, 7a... Extended end. Banquet 2 area calculation 3 fan joy q item calculation 7 item calculation 8 taku

Claims (1)

[Claims] In a roof assembly method in which an end of a roof panel is extended to cover a roof side rail, and the extended end is joined to a lower end joining flange located inside the side end of the roof side rail, first, the roof panel is attached to the roof side rail. A method for assembling an automobile roof, in which a roof side rail outer panel is joined to form a subassembly, and then a roof side rail inner panel is joined to the roof side rail outer panel.