JPH049265Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The disclosed technology belongs to the technical field of automobile body structures in which an exterior plate and an interior plate are joined via reinforcing members.

Therefore, in this invention, an outer panel and an inner panel formed into a predetermined curved shape are reinforced by a reinforcing member formed into a three-dimensional shape by drawing. This invention relates to an automobile body structure in which a flange is formed and the flange is clamped and joined to each flange of an outer panel and an inner panel, and in particular, it is designed to prevent reinforcing members from interfering with the outer panel and the inner panel. This invention relates to an automobile body structure in which a wrinkle-absorbing bead is provided in a region close to the drawing part.

<Prior Art> As is well known, various reinforcing members are provided in various parts of an automobile body in order to improve the rigidity of the entire vehicle body and prevent vibration.

As shown in Figs. 3 to 5, a roof side inner wheel house brace is installed as a reinforcing member in the middle of the quarter panel as the outer panel and the roof side inner panel as the inner panel in the rear fender of the automobile. 1 (hereinafter referred to as brace 1) is interposed, and a flange 6 at the upper end of the brace 1 is attached to each flange 4, 5 at the upper end of the quarter panel 2 and the roof side inner panel. , 5 are spot welded at the same time.

As shown in FIG. 5, the brace 1 is formed by drawing on both sides with flanges 6 left over the entire upper edge, and has a central cross section shaped like a hat, and a vertical cross section on both sides. is formed in a stepped shape, and the side flanges 7 continuous from the flange 6 in a stepped shape on both sides are in contact with the side walls of the roof side inner panel 3, and the lower end is connected to a wheel house (not shown). It is adapted to be joined to the outer peripheral surface of.

<Problems to be solved by the invention> However, in the above-mentioned conventional automobile body structure, since the brace 1 is formed by drawing, the lower corner part of the flange 6 of the brace 1 undergoes a severe cross-sectional change during forming. No. 8 had the disadvantage that wrinkles were formed due to drawing, and the wrinkled portions were susceptible to deterioration such as cracks during use over time.

In addition, since the flange 6 at the upper end of the brace 1 is strained during drawing forming and causes distortion, the joints of the flanges 4, 6, and 5 of the quarter panel 2, brace 1, and roof side inner panel 3 that are joined to each other are The surface becomes uneven, which not only makes the area look bad, but also causes problems such as poor sealing and water leakage.

Generally speaking, as a means of preventing the occurrence of distortion due to ironing that accompanies drawing, a wrinkle-absorbing bead is provided in advance at the outer edge of the drawing area, and the additional tension transmitted to the outer periphery during drawing is absorbed by the wrinkle-absorbing bead. In the case of the brace 1 shown in FIGS. 3 to 5, the flange 6 is joined to the flanges 4 and 5 of the quarter panel 2 and the roof side inner panel 3 in a pinched manner. Because of the structure, it was structurally impossible to provide a wrinkle absorbing bead on the flange 6.

Furthermore, currently, the only means to prevent the occurrence of wrinkles in the brace 1 is to cut the material appropriately and bend it into a predetermined shape instead of forming the brace 1 by drawing. However, in the case of this type of embodiment, there was a disadvantage that the brace 1 was inferior in terms of rigidity compared to one formed by drawing.

Incidentally, there is currently a similar technology for the body structure of an automobile as disclosed in Japanese Utility Model Application Publication No. 132164/1983.

The purpose of this invention is to solve the technical problems of the automobile body structure based on the above-mentioned conventional technology, and to maintain high rigidity by drawing a three-dimensional reinforcing member while preventing wrinkles in the reinforcing member during drawing. It is an object of the present invention to provide an excellent automobile body structure that is beneficial to the field of application of component assembly technology in the automobile manufacturing industry by reliably preventing such occurrence and improving the quality of the product.

<Means/effects for solving the problem> In accordance with the above-mentioned purpose, the structure of this invention, which is based on the scope of the above-mentioned utility model registration claim, is to solve the above-mentioned problem by installing a flange between the outer panel and the inner panel. A reinforcing member is formed into a three-dimensional shape by drawing, which is sandwiched and joined together through the reinforcing member, and a flange that is sufficiently longer than the flanges of the outer panel and the inner panel is formed at one end of the reinforcing member. A wrinkle-absorbing bead is provided at the edge of the drawing part of the member to prevent wrinkles from forming due to the drawing-forming of the reinforcing member. In this case, a technical measure is taken in which the wrinkle-absorbing bead is located below the joint of the three parts by means of a sufficiently long flange of the reinforcing member.

<Example> Next, an example of this invention will be described below based on FIGS. 1 and 2. It should be noted that the same parts as in the conventional mode shown in the drawings from FIG. 3 onward will be described using the same reference numerals, and FIG. 3 will be used as is for the description.

Reference numeral 9 denotes a car body, and a brace 1' (roof side inner wheel house brace), which is the central point of this invention, is installed in the rear fender part of the car.
The brace 1' is interposed between the roof side inner panel 3 as an inner panel and the quarter panel 2 as an outer panel covering the outer surface of the roof side inner panel 3, and its lower end is attached to the center of the arch of the rear wheel 2 (not shown). It is joined to reinforce the rear wheel house.

The roof side inner panel 3 and the quarter panel 2 are formed into a predetermined curved shape, and each upper end has a flange 5 having a predetermined height W,
4 is formed, and the flanges 5, 4 are removed from the window frame opening surface so that the window frame 10 can be attached to this area.

The brace 1' is formed by drawing into a shape in which both lower side ends are narrowed, leaving a flange 6' extending over the entire upper end, and the cross section below the flange 6' is shaped like a hat. A side flange 7 is formed at both end portions of the flange 6' in a stepped manner.

The flange 6' of the brace 1' is formed higher by a set height W' than the height W of each flange 4, 5 of the quarter panel 2 and the roof side inner panel 3. A wrinkle-absorbing bead 11 is provided at the lower corner portion 8 where the cross-section changes drastically due to drawing forming, and the added tension during drawing is absorbed by the wrinkle-absorbing bead 11, and the flange 6 is strengthened by the ironing accompanying drawing forming. ′ is prevented from being distorted.

Therefore, the flange 6' at the upper end of the brace 1' is formed into a flat plate shape with no irregularities, and the corner portion 8
The shape is wrinkle-free due to drawing and ironing.

Further, the flange 6' of the brace 1' is interposed between the flanges 4, 5 of the quarter panel 2 and the roof side inner panel 3, and the three flanges 4, 6', 5 are interposed within the range of height W. are spot welded, the side flange 7 of the brace 1' is joined to the outer wall of the roof side inner panel 3, and its lower end is joined to the upper surface of the rear wheel house (not shown). A substantially closed cross section is formed by the panel 3 and the rear wheel house.

In the above configuration, when the brace 1' is attached to the rear fender of the vehicle 9, the rear wheel house (not shown) forms a substantially closed cross-sectional structure together with the brace 1' and the roof side inner panel 3, and is organically connected to the roof side inner panel 3. The vibrations and shocks applied to the rear wheel house are smoothly distributed and supported by the roof side inner panel 3 and the quarter panel 2.

Furthermore, since the flange 6' at the upper end of the brace 1' is formed into a flat plate shape without deformation, the flanges 4 and 5 of the quarter panel 2 and the roof side inner panel 3 are further joined to the flange 6'. Naturally, the opening surface of the window frame, which is made up of Since no wrinkles are formed in the corner portions 8, which are subject to severe wrinkles, deterioration of the corner portions 8 due to use over time is also eliminated.

Furthermore, the flange 6' of the brace 1' is formed to be higher than the respective flanges 4 and 5 of the quarter panel 2 and roof side inner panel 3 by a set height W', and the wrinkles of the brace 1' are The corner part 8 where the absorption bead 11 is arranged is located below the flange joint part of the quarter panel 2 and the roof side inner panel 3 by a height W', which reduces the rigidity of the rear fender part. It has been found through various tests that there is almost no decrease in

It goes without saying that the embodiments of this invention are not limited to the above-mentioned embodiments, and various other embodiments can be adopted.

<Effects of the invention> As described above, according to this invention, the rigidity and durability of the three-dimensional reinforcing member interposed between the outer panel and the inner panel can be maintained at a high level, and the reinforcing member during drawing forming can be maintained at a high level. It is possible to reliably prevent the occurrence of wrinkles, and as a result, the excellent effect of reliably improving the quality of the product is achieved.

That is, a reinforcing member that is integrally sandwiched and joined between an outer panel and an inner panel via a flange is formed into a three-dimensional shape by drawing, and a wrinkle-absorbing bead is provided at the edge of the drawn portion of the reinforcing member. This prevents wrinkles from forming on the edge of the drawing part of the reinforcing member due to ironing during drawing, and prevents deterioration of that area and poor bonding with the outer panel and inner panel due to distortion and deformation of the flange of the reinforcing member. Furthermore, by forming a flange at one end of the reinforcing member that is sufficiently longer than the flanges of the outer panel and the inner panel, it is possible to insert the flange of the reinforcing member between each flange of the outer panel and the inner panel. When connecting, the wrinkle-absorbing bead of the reinforcing member is positioned below the flange joint between the outer panel and the inner panel, and the wrinkle-absorbing bead does not interfere with each flange of the outer panel or inner panel. is also played.

In addition, by eliminating strain deformation of the flange of the reinforcing member, the unevenness of the flange surface of the outer panel or inner panel that is joined to the flange is also eliminated.
The excellent effect of improving the attachment and sealing properties of attachment members to the flange surfaces of the outer panel and inner panel is achieved.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of this invention, and Figure 1 is a partial sectional view corresponding to II in Figure 2;
FIG. 2 is a partial cross-sectional perspective view of the reinforcing member, FIG. 3 and the following drawings show a conventional aspect, and FIG. 3 is a schematic partial front view that also serves as an explanation of an embodiment of this invention.
Figure 4 is a partial sectional view corresponding to Figure 5;
The figure is a partially sectional perspective view of the reinforcing member. 2... Outer panel, 3... Inner panel,
1'... Reinforcement member, 6'... Flange, 4, 5...
Flange, 9...Car body, 11...Wrinkle absorbing bead.

Claims (1)

[Scope of utility model registration request] A reinforcing member is interposed between the outer panel and the inner panel, the reinforcing member is formed into a three-dimensional shape by drawing, and a flange is formed at one end near the drawing part, and each flange of the outer panel and the inner panel is formed with a flange. In an automobile body structure in which the flange of the reinforcing member is clamped and joined, the flange of the reinforcing member is formed longer than the flanges of the outer panel and the inner panel, and a wrinkle-absorbing beat is provided at the edge of the drawn portion of the reinforcing member. An automobile body structure characterized by being provided with.