JPH11240467A - Structure of rocker panel assembly for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable smooth assembling of rocker panels even if dispersion at assembly is large. SOLUTION: In this structure, a lateral flange 15c is formed by projection at the end face of a cross member 15 extending in the vehicle width direction and joined to the floor panel top. Rocker panels 8 are disposed to the left and right side faces of the floor panel, extending in the vehicle length direction. A rocker inner 17 of the rocker panel 8 is formed to have an upper wall 17b bending and extending inward continuously from a vertical flange 17a, and a side wall 17c extending downward continuously from the upper wall 17b. The rocker inner 17 is assembled in the direction A from the vehicle exterior so that the upper wall 17b abuts the lateral flange 15c. The recessed bead 20 is formed to the lateral flange 15c. To the side wall 17c, a projection 21 is formed by expansion to have a slant guide surface 21a to which the bead 20 is abutted. Further, at the upper wall 17b, a recess 22 to which the bead 20 is engaged is formed so that it runs in a line with the guide surface 21a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling structure of a rocker panel constituting a floor portion of a vehicle.

[0002]

2. Description of the Related Art Generally, as shown in FIGS. 5 and 6, a floor portion of an automobile is provided with a rocker inner 52 of a rocker panel 51 extending in the front-rear direction of the vehicle body on the left and right edges of the floor panel 50.
And a cross member 53 extending in the vehicle width direction is connected between the left and right rocker inners 52, and the cross member 53 is connected to the upper surface of the floor panel 50.

The cross member 53 has a hat-shaped cross section, and has an end flange 53b formed at the left and right ends thereof, following the horizontal flange 53a. Further, the rocker inner 52 forms an upper wall portion 52b that is bent inward and extends on the upper vertical flange 52a, and subsequently forms a side wall portion 52c that extends slightly curved downward.
2c, a lower vertical flange 52d is formed. Then, the horizontal flange 53a of the cross member 53 is spot-welded to the upper wall portion 52b of the rocker inner 52, and the end face flange 53b is spot-welded to the side wall portion 52c (see, for example, JP-A-6-144298).

In order to assemble the rocker inner 52, conventionally, a floor panel 5 to which a cross member 53 has been welded in advance is used.
0 is fixed on the support base. Further, the rocker inner 52 is fixed to the jig, and in this state, the rocker panel 52 is moved from the outside of the vehicle in the direction A (see the mark → in FIG. 5) by the jig.
3 and spot welding may be performed thereafter.

[0005]

By the way, in the above-mentioned conventional assembly structure, as shown in FIG. 7, for example, when there is a vertical variation B in the set position between the cross member 53 and the rocker inner 52 '. May not be able to be set by hitting the horizontal flange 53a of the cross member 53, which causes a problem that the assembling work cannot be performed smoothly.

Here, in order to facilitate the setting, as shown in FIG. 8, the lateral flange 53a is bent slightly upward and a rake angle C is provided on the lateral flange 53a to absorb variations. Can be considered. However, if the variation B is small, it can be absorbed, but it cannot cope with the large variation.

The present invention has been made in view of the above-described conventional circumstances, and has as its object to provide a rocker panel mounting structure for an automobile which can smoothly perform an assembling operation even when the dispersion is large.

[0008]

According to the present invention, there is provided a cross member joined to an upper surface of a floor panel and having a lateral flange projecting from an end face of the cross member extending in the vehicle width direction. A rocker panel extending from the rocker panel, the rocker inner of the rocker panel has a shape having an upper wall portion extending inwardly following the vertical flange and a side wall portion extending downward following the upper wall portion. In a rocker panel mounting structure for an automobile, which is mounted so that the lateral flange of the cross member abuts on the upper wall portion from the outside, a concave bead portion is formed at least at a leading edge of the lateral flange, A convex portion having an inclined guide surface with which the bead comes into contact with the upper edge portion of the side wall portion is bulged, and a concave portion with which the bead portion is engaged with the upper wall portion is connected to the guide surface. It is characterized in that formed on so that.

[0009]

In order to assemble the rocker panel of the present invention, the rocker inner fixed to the jig is assembled to the cross member from outside the vehicle. If the rocker inner has a variation in the vertical direction during this assembling, the bead portion of the cross member contacts the guide surface of the rocker inner, and when the rocker inner is pushed in this state, the bead moves along the guide surface, As soon as it gets over the guide surface, it engages with the recess. As a result, the horizontal flange is fitted to the upper wall portion, and thereafter, the two are spot-welded.

As described above, according to the mounting structure of the present invention,
Since a bead portion was formed on the lateral flange of the cross member and a convex portion having a guide surface was formed on the side wall portion of the rocker inner, if there was a variation in the vertical direction when assembling the rocker inner, the tip of the bead portion was first placed. By abutting on the guide surface and sliding along the guide surface, variations can be absorbed, thereby providing an effect that the assembling work can be performed smoothly. In this case, since only the tip of the bead portion abuts, the sliding resistance can be reduced as compared with the case where the abutment abuts over the entire front edge of the horizontal flange, and the assembling can be performed smoothly from this point as well.

Since the guide surface is formed on the side wall portion of the rocker inner, it is possible to cope with a large variation in the vertical direction. Further, since the guide surface and the concave portion of the upper wall portion are continuous, the bead portion has a guide surface. And at the same time, engages with the concave portion, whereby the positioning between the horizontal flange and the upper wall portion can be reliably performed, and from this point, the assembling work can be performed smoothly.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 4 are views for explaining a rocker panel assembling structure of a vehicle according to an embodiment of the present invention, and FIGS. 1 to 3 are exploded perspective views and cross-sectional views respectively showing a rocker panel assembling state. FIG. 4 is an exploded perspective view, and FIG. 4 is a vehicle body side view to which the assembly structure of the present embodiment is applied.

In the figure, reference numeral 1 denotes a wagon type automobile,
In this vehicle body 2, a quarter panel 4 is connected to the rear ends of the left and right side panels 3, a roof panel 5 is disposed between the upper ends of the side panels 3, and the quarter panel 4, and a floor panel is disposed between the lower ends. 6 has a schematic structure in which a cabin is formed.

The side panel 3 includes a roof side rail 7 extending longitudinally along the left and right edges of the roof panel 5 and a rocker panel 8 extending longitudinally along the left and right edges of the floor panel 6. A front pillar 9 and a center pillar 10 extending in the vertical direction are provided between the center pillar 10 and a front door opening 3a. The center pillar 10 and the quarter pillar 4a of the quarter panel 4 define a rear door opening 3b.
The door openings 3a, 3
At b, a front door and a rear door (not shown) are provided so as to be openable and closable.

At the center of the floor panel 6, a center tunnel 6a extending in the front-rear direction is projected, and at the front end of the center tunnel 6a, an opening (not shown) for a shift lever, a side brake and the like is provided. 6b are formed. Behind the opening 6b of the floor panel 6, there is provided a cross member 15 having a hat-shaped cross section extending in the vehicle width direction, and the lower flanges 15a, 1 of the cross member 15 are provided.
5a is welded to the upper surface of the floor panel 6. A front seat (not shown) is mounted on the cross member 15.

End members 15b, 15b are formed on both end surfaces in the longitudinal direction of the cross member 15 and extend upwardly following the lower flange 15a. Flange 15
c is formed.

The rocker panel 8 is formed by joining a rocker outer 16 and a rocker inner 17 so as to form a closed cross section. The rocker inner 17 has an upper vertically extending flange 17a which extends substantially vertically, and a substantially horizontal inner side subsequently. , A side wall portion 17c extending slightly curved downward from the inner end of the upper wall portion 17b, and a lower vertical flange 17d extending substantially vertically following the lower edge of the side wall portion 17c. It is configured.

A lateral flange 15c of the cross member 15 is spot-welded to an upper wall 17b of the rocker inner 17, and left and right end flanges 15b are spot-welded to the side wall 17c. Furthermore, the side wall 1 of the rocker inner 17
The left and right edges of the floor panel 6 are spot-welded to 7c.

At the center of the horizontal flange 15c of the cross member 15, a concave bead portion 20 is recessed, and the bead portion 20 extends in the longitudinal direction of the cross member 15. Here, the bead portion 20 may be formed only at the leading edge of the horizontal flange 15c.

At the upper edge of the side wall 17c of the rocker inner 17, a projection 21 having a substantially nose-like shape in cross section is formed to bulge inward. A guide surface 21a with which the tip 20a of the bead portion 20 abuts is formed on the upper surface of the convex portion 21, and the inclination angle θ of the guide surface 21a is set to approximately 45 degrees. The guide surface 21 of the upper wall portion 17b
a recess 22 is formed in a portion facing
2 and the guide surface 21a are formed so as to form a continuous surface.

Next, the operation and effect of this embodiment will be described. In order to assemble the rocker inner 17 in the present embodiment, the cross member 15 is integrated with the floor panel 6 by welding in advance, and the floor panel 6 is fixed on the support base. Further, the rocker inner 17 is fixed to a jig, and in this state, the rocker panel 52 is moved from the outside A of the vehicle to the cross member 1 by the jig.
5, and then spot-welded.

If there is a variation B in the vertical direction between the cross member 15 and the rocker inner 17 at the time of this assembling, there has been a problem that the assembly cannot hitherto hit the horizontal flange 15c of the cross member 15 and cannot be assembled.

On the other hand, in the present embodiment, the bead portion 20 of the cross member 15 is
1a, and the rocker inner 1 in this state.
7 is further pushed in the direction of the mark A, the tip end 20a of the bead portion 20 moves up and down relative to the guide surface 21 while sliding, and the bead portion 20 gets over the guide surface 21 and simultaneously engages with the concave portion 22. As a result, the joining surfaces of the end flange 15b and the lateral flange 15c of the cross member 15 with the upper wall portion 17b and the side wall portion 17c of the rocker inner 17 are spot-welded.

As described above, according to the present embodiment, the bead portion 20 is recessed in the horizontal flange 15c of the cross member 15,
A guide surface 21 is provided on the upper edge of the side wall 17 of the rocker inner 17.
a, the tip end 20a of the bead portion 20 has the guide surface 21a.
As a result, the assembling work can be performed smoothly.

Further, since only the tip end 20a of the bead portion 20 comes into contact, the sliding resistance can be reduced as compared with the case where the end portion of the lateral flange comes into contact with the entire length of the edge, so that the assembling can be performed smoothly.

In this embodiment, since the guide surface 21a is formed on the side wall 17c of the rocker inner 17, the variation B
Is large, and since the guide surface 21a and the concave portion 22 of the upper wall portion 17b are formed to form a continuous surface, the bead portion 20 gets over the guide surface 21a and simultaneously engages with the concave portion 22. Thus, the positioning of the cross member 15 and the rocker inner 17 in the vehicle longitudinal direction can be performed accurately and reliably.

Further, the bead portion 2 is
By forming 0, it functions as a wrinkle removal at the time of molding the cross member.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view illustrating an assembled state of a rocker panel of an automobile according to an embodiment of the present invention.

FIG. 2 is a sectional view showing an assembled state of the rocker panel (a sectional view taken along the line II of FIG. 1).

FIG. 3 is an exploded perspective view showing an assembled state of the rocker panel on the floor panel.

FIG. 4 is a side view of a vehicle body provided with the rocker panel.

FIG. 5 is an exploded perspective view showing a conventional assembled state.

FIG. 6 is a perspective view of a conventional assembly structure.

FIG. 7 is a sectional view of a conventional structure.

FIG. 8 is a cross-sectional view showing a process of establishing the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automobile 6 Floor panel 8 Rocker panel 15 Cross member 15c Horizontal flange 17 Rocker inner 17a Vertical flange 17b Upper wall part 17c Side wall part 20 Bead part 21 Convex part 21a Guide surface 22 Concave part

Claims (1)

[Claims] A cross member joined to an upper surface of the floor panel and extending in a vehicle width direction, a lateral flange is formed on an end face of the cross member, and a rocker panel extending in a vehicle front-rear direction is disposed on left and right sides of the floor panel; The rocker inner of the rocker panel has a shape having an upper wall portion extending inwardly bent following the longitudinal flange and a side wall portion extending downwardly following the upper wall portion, and the rocker inner is formed from the outside of the vehicle by the upper wall portion. In a rocker panel mounting structure for an automobile in which the horizontal flange of the cross member is mounted so as to abut, a concave bead portion is formed at least at a leading edge of the horizontal flange, and an upper edge portion of the side wall portion is formed. A convex portion having an inclined guide surface with which the bead portion abuts is formed so as to bulge, and a concave portion with which the bead portion is engaged with the upper wall portion is formed so as to be continuous with the guide surface. The rocker panel assembly structure of the automobile to be.