JPH04193690A - Structure of side sill rear end of automobile - Google Patents

Abstract

PURPOSE:To ensure sealing around the joining part of a closing plate by forming an extension part on the rear end of the bottom wall of the sill inner of a side sill and joining the lower brim flange of the closing plate to the rear end of the bottom wall of a sill outer and to the extension part of the sill inner. CONSTITUTION:A sill main body 1 having a closed sectional shape is formed by joining an upper flange 4 and a lower flange 5, which are arranged or a sill outer 2 and a sill inner 3, respectively. A closing plate 9 is joined, ranging over the sill outer 2 and the sill inner 3, at the rear end opening part of the sill main body 1 facing the inside of a rear wheel house 8, thereby sealing the rear end opening part of the sill main body 1. In addition, on the rear end of the bottom wall 3c of the sill inner 3, an extension part 20, which is aligned roughly to a flush surface with the rear end part of the bottom 2a of the sill outer 2, is formed into an integrated body with a lower brim flange 5. On the other hand, on the lower brim of the closing plate 9, a flange 21, which is overlapped in series with the rear end part of the bottom wall 2a of the sill outer 2 and with the extension part 20 of the sill inner 3, is formed by folding process. In this case, respective flanges 21, 10, 11 are connected to each other as an integrated body.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a rear end structure of a side sill that constitutes a longitudinal frame member on both sides of an automobile floor.

BACKGROUND OF THE INVENTION As is well known, the side sill of an automobile is formed into a closed section by an outer sill and an inner sill, and the rear end thereof is closed by a closing plate within the rear wheel house. To explain this with reference to FIGS. 3 to 6, l is a sill main body formed into a closed cross section by the sill outer 2 and the sill inner 3, and the sill outer 2. Each of the sill inners 3 has flanges 4.5 on the upper and lower edges, and these upper and lower edge flanges 4.5 are joined together to form the sill main body 1 with a closed cross section as described above. The sill outer 2 has a rising portion 6 formed at its rear end, and a rear fender 7 is connected to this rising portion 6.

The rear end of this sill body 1 faces into the rear wheel house 8, and the rear end opening of the sill body 1 is closed within this rear wheel house 8 by a closing plate 9 joined across the sill outer 2 and the sill inner 3. It is. The closing plate 9 is joined to the front end of the rear wheel house outer I6.
is formed into a substantially arcuate cross-sectional shape similar to the rear wheel house outer 16, and the flange IO formed on the outer side edge is joined to the flange 12 formed on the rear edge of the rising portion 6 of the sill outer 2. The rear end edge of the sill inner 3, specifically, the flange 13 formed continuously on each edge of the top wall 3a, vertical wall 3b, and bottom wall 3c of the sill inner 3 is abutted against the flange 11 formed on the inner side edge. It is joined together. Further, on the lower edge of the closing plate 9, there is a flange 14 formed continuously with the flange 10 on the outer edge and joined to the rear end of the bottom wall 2a of the sill outer 2, and a flange 14 that is substantially perpendicular from the end of the flange 14. The flange 15 is bent to form a flange 15 to be joined to the lower edge flange 4 of the sill outer 2. In Fig. 4, 17 inch wheel house inches are shown.

This similar structure is shown in, for example, Japanese Utility Model Application No. 61-187779.

Problem to be Solved by the Invention As mentioned above, the closing plate 9 is formed as an extension member of the front end of the rear wheel house outer 16, and the outer edge flange 10 of the closing plate 9
is joined to the rear end flange 12 of the rising portion 6 of the sill outer 2, and the flange 13 of the rear end edge of the sill inner 3 is abutted against and joined to the inner edge flange 11 of the closing plate 9. The edge flange lO and the inner edge flange 11 are offset in the front-rear direction, and accordingly, the lower edge flange 14.15 of the closing plate 9 and the inner edge flange 1
1 are discontinuously formed, the moldability of the closing plate 9 deteriorates. Also, the peripheral edge of the closing plate 9 and the sill outer 2. A sealing material is applied to the end of the joint with the sill inner 3 using a seal gun or the like to prevent water from entering the inside of the sill. The discontinuity makes it difficult to apply the sealant, and the discontinuity of the seal line leaves concerns about watertightness.

Furthermore, since the flange 15 of the closing plate 9 and the inner edge flange 11 are discontinuous, these flanges 15.11 and the lower edge flange 4.1 of the sill outer 2 are discontinuous. As shown in Figure 6, at the intersection of the joint with the rear edge flange 13 of the sill inner 3, there is a gap δ that penetrates into and out of the sill, and water enters the inside of the sill from this part. was there. SUMMARY OF THE INVENTION Accordingly, the present invention provides reliable sealing around the closing plate joint at the rear end of the sill body, facilitates the application of sealant, and improves the formability of the closing plate. The present invention provides a structure for the rear end of an automobile side sill.

In order to solve the problem, a sill outer and a sill inner each having a bent flange formed on the lower edge are joined to the upper and lower edge flanges, and the sill outer and the sill inner form a sill main body with a closed cross section. , a structure in which a closing plate is joined to the rear end opening of the sill body over the sill outer and the sill inner, and the rear end opening of the sill body is closed by the closing plate, wherein the rear end of the bottom wall of the sill inner An extension portion is formed on the bottom edge of the sill outer that is substantially flush with the rear end of the bottom wall of the sill outer, while a flange is formed on the lower edge of the closing plate that overlaps the rear end of the bottom wall of the sill outer and the extension of the sill inner. The lower edge flange of the closing plate is joined to the rear end of the bottom wall of the sill outer and the extension of the sill inner.

The lower edge flange of the working closing plate is joined to the rear end of the bottom wall of the sill outer and the extension of the sill inner in a series of overlapping parts, so that the lower edge flange of the lower edge flange, the sill outer, and the sill inner are connected to the lower edge flange of the closing plate. Each junction of the outer and inner edges of the plate can be continuous. Therefore, the sealing material can be continuously applied to the ends of the respective joint parts.

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, with the same reference numerals assigned to the same parts as in the conventional structure.

1 to 3, sill outer 2. The sill inner 3 is provided with upper and lower edge flanges 4 and 5, respectively, and these upper and lower edge flanges 4.5 are joined together to form the sill outer 2.
．． The sill inner 3 forms the sill main body 1 into a closed cross section.

A rising portion 6 is formed at the rear end of the sill outer 2, and a rear fender 7 is joined to this rising portion 6. Sill body 1 facing inside rear wheel house 8
The rear end opening has a sill outer 2. A closing plate 9 is joined across the sill inner 3, and the closing plate 9 closes the rear end opening of the sill body 1. The closing plate 9 is joined to the front end of the rear wheel house outer 16 and serves as an extension member of the front end of the rear wheel house outer 16, and is formed into a substantially arcuate cross-sectional shape like the rear wheel house outer 16. It is. Therefore, a flange 10 is bent and formed on the outer edge of this closing plate 9 toward the inside of the carrier wheel house 8, and this flange 10 is bent and formed on the rear edge of the rising part 6 of the sill outer 2.
At the same time, a flange 12 is bent and formed on the inner edge of the closing plate 9 to receive a trailing edge flange 13A formed continuously on the rear edge of the upper wall 3a and the vertical wall 3b of the sill inner 3. The trailing edge flange 13A is abutted against this flange 11 and joined.

At the rear end of the bottom wall 3c of the sill inner 3, there is provided an extension 20 that is substantially flush with the rear end of the bottom wall 2a of the sill outer 2. It is integrally formed with the flange 5.

On the other hand, on the lower edge of the closing plate 9, a flange 21 is formed by bending it toward the inside of the rear wheel house 8, and the flange 21 overlaps the rear end of the bottom wall 2a of the sill outer 2 and the extension 20 of the sill inner 3. , this lower edge flange 21
The flanges 10.11 on the outer and inner edges are connected and integrally molded. The lower edge flange 21 of the closing plate 9 is joined to the rear end portion of the bottom wall 2a of the sill outer 2 and the upper surface of the extension portion 20 of the sill inner 3 in an overlapping manner.

According to the structure of the above embodiment, the extension portion 20 is formed at the rear end of the bottom wall 3c of the sill inner 3 and is aligned substantially flush with the rear end of the bottom wall 2a of the sill outer 2. Since the lower edge flange 21 of the closing plate 9 is joined across the extension portion 20 and the lower edge flange 20, the ends of the joined portion of the lower edge flange 21 are continuous in a linear manner, and this extends outside and inside the closing plate 9. The edge flanges 10.11, the trailing edge flange 12.degree. of the rising portion 6 of the sill outer 2, and the trailing edge flange 13A of the sill inner 3 are continuous with the ends of each joint. Therefore, since the seal line for applying sealant to these terminals is continuous at the periphery of the closure 9, it is easy to apply the sealant with a seal gun, and there is no need to worry about missing sealant. Reliable sealing can be achieved without causing any damage.

Further, the closing plate 9 has a flange +0.11.
21 can be continuously and integrally bent and formed, which not only improves the formability of the closing plate 9 but also improves the shape of the lower edge flange 21 and the inner edge flange 11.
Since there is no discontinuous part between the sill outer 2. Since there is no continuous gap δ inside and outside the seal as in the conventional seal at the butt joint between the lower edge flange 4.5 of the sill inner 3 and the closing plate 9, an even more reliable seal can be achieved. .

In the above embodiment, the closing plate 9 is described as being molded separately from the rear wheel house outer 16, but the closing plate 9 may be integrally extended to the front side of the rear wheel house outer 16. You can also.

Effects of the Invention As described above, according to the present invention, the rear end of the bottom wall of the sill inner is formed with an extension that is substantially flush with the rear end of the bottom wall of the sill outer. In order to form a lower edge flange that overlaps the bottom wall and the extension part of the sill outer in series, and to overlap and join the lower edge flange, the end of the joint part of this lower edge flange is connected to the bottom of the sill outer. Since the sealing material can be continuous in a linear manner from the wall to the bottom wall of the sill inner, it is possible to easily and reliably apply the sealing material to the portion, thereby preventing sealing defects from occurring. In addition, since the lower edge flange of the closing plate can be formed as a continuous surface from the outer edge to the inner edge of the closing plate, the connection terminals of the outer edge and the sill outer, the inner edge and the sill inner, and the lower edge flange can be easily formed. It is also possible to make the sealing material application work easier and more practical.In addition, since there is no discontinuous part on the periphery of the closing plate, The moldability of the material can be improved, which can greatly contribute to cost reduction.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention, Fig. 2 is an exploded perspective view of the same, Fig. 3 is a rear perspective view of an automobile, and Fig. 4 is an enlarged view of the main part of Fig. 3 showing the conventional structure. Figure 5 is A of Figure 4.
The arrow view and FIG. 6 are horizontal cross-sectional views of the B range part in FIG. DESCRIPTION OF SYMBOLS 1... Sill body, 2... Sill outer, 3... Sill inner, 2a... Bottom wall of sill outer, 3C... Bottom wall of sill inner, 4... Upper and lower edge flange of sill outer, 5 , upper and lower edge flange of sill inner, 9... closing plate, 20... extension part, 21... lower edge flange of closing plate. Figure 3

Claims (1)

[Claims] (1) A sill outer and a sill inner each having a bent flange formed at the upper and lower ends are joined together at the upper and lower edge flanges, and the sill outer and the sill inner form a sill main body with a closed cross section. In a structure in which a closing plate is joined to a rear end opening over a sill outer and a sill inner, and the rear end opening of the sill main body is closed by the closing plate, the bottom of the sill outer is attached to the rear end of the bottom wall of the sill inner. While forming an extension that is substantially flush with the rear end of the wall, a flange is formed on the lower edge of the closing plate that overlaps the rear end of the bottom wall of the sill outer and the extension of the sill inner, and the closing A side sill rear end structure for an automobile, characterized in that a lower edge flange of the plate is joined to a rear end of the bottom wall of the sill outer and an extension of the sill inner.