JPH0224703Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The invention constitutes a strength member in the width direction of a vehicle body.
This invention relates to a cross member structure for a vehicle.

<Prior art> As disclosed in, for example, Japanese Utility Model Publication No. 58-246235, the front side of the cabin of a vehicle body is made rigid by arranging a strength member formed in a box-shaped cross section in the vehicle width direction as a cross member. It has gained. These cross members are joined to sleeve-shaped pillar extensions that protrude from the bases of the pillars, and these joints are joined by abutting flange surfaces formed at the ends of each other.

On the other hand, the cross member is often connected to a ventilation duct that introduces outside air, so if raindrops mixed in with the outside air enter the cross member, the water droplets will reach the interior from the joint surface with the pillar extension mentioned above. There is a risk of leakage.

<Problems to be solved by the invention> In view of these shortcomings of the conventional technology, the main purpose of the present invention is to prevent water from leaking into the room even if water droplets enter the hollow structure of the cross member. An object of the present invention is to provide an improved cross member structure that can prevent the above problems.

<Means for Solving the Problems> According to the present invention, the purpose of this invention is to provide a hollow structure that is connected to a pillar extension that protrudes toward the interior of the vehicle from a pillar that has a hollow structure, and that forms a strength member of the vehicle body. The cross member has a cross-sectional structure, wherein both ends of the bottom plate of the cross member are bent downward in a crank shape, and free ends of the bottom plate of the pillar extension are bent upward in a crank shape, and the pillar extension The bent portion of the cross member is overlapped and joined to the upper surface of the bent portion of the cross member,
and a cross for a vehicle, characterized in that the pillar has a water drain hole at a joint with the pillar extension along the bottom plate of the pillar extension to communicate the inside of the cross member and the inside of the pillar. This is achieved by providing a member structure.

<Function> In this way, when the joints between the cross member and the pillar extension engage with each other, the bottom surface of the cross member is placed above the bottom plate of the pillar extension so that a step is formed downward toward the side edge. By polymerizing and bonding, it is possible to prevent water droplets from leaking into the vehicle interior. In addition, water can be drained from the drain hole provided at the joint part of the pillar with the pillar extension bottom plate.

<Embodiments> Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows the joint between the front pillar and the cross member.

The body outer 1 and the front pillar inner 2 abut each other at their flanges and are joined by spot welding to form a hollow body side. A pillar extension 3 having an outwardly bent flange 4 at its end is welded to the surface of the front pillar inner 2 facing the interior of the vehicle. This pillar extension 3 is the second
As shown in the figure, its side cross-sectional shape is approximately U-shaped with the front side of the vehicle body open.

At the portion where the front pillar inner 2 and the bottom plate 5 of the pillar extension 3 come into contact, there is a water drain hole 6 along the bottom plate of the pillar extension 3 that communicates the inside of the cross member 7 with the inside of the body panel.
Water droplets that have entered the cross member 7 are discharged from the water drain hole 6 to the outside of the vehicle through the inside of the body panel.

A body inner panel 8 rising from the floor and forming a side wall of the vehicle interior is joined to the pillar extension 3 by sandwiching the lower part of the flange 4 from the vehicle interior side. Like this, the body inner panel 8
By arranging the water droplets to be closest to the interior of the vehicle, it is possible to prevent water droplets from being transmitted into the vehicle interior and leaking.

After the bottom plate 5 of the pillar extension 3 is extended toward the interior of the vehicle, it is first bent upward, then further bent toward the interior to form a crank-shaped bent portion 9, and the end portion is bent downward. A flange 10 is formed.

On the other hand, the cross member 7 provided between the inner ends of the left and right front pillar inners 2 has basically the same side cross-sectional shape as the pillar extension 3, as also shown in FIG. Both ends of the bottom plate 11 are first bent downward in correspondence with the crank-shaped bent portions 9 of the pillar extension 3, and the end portions thereof are bent toward the outside of the vehicle interior to form crank-shaped bent portions 13. . Then, so that the bottom plate 11 of the cross member 7 overlaps the top surface of the bottom plate 5 of the pillar extension 3, the crank-shaped bent portions 9 and 13 are welded to each other via the reinforcing material 12 having an L-shaped cross section. By closing the open surface with the rear vertical wall of the front cowl member 14,
A cross member with a hollow closed cross section is formed as a strength member in the width direction of the vehicle body.

In this way, step portions are provided at both joining ends of the cross member 7 and the pillar extension 3, and the steps are directed downward toward the side ends, and the cross member 7 is overlaid and joined to the upper surface of the pillar extension 3. , the water droplets will definitely flow out toward the drain hole 6. Even if water droplets secrete from the polymerized part of the Yoshiba, the rising part can prevent it from leaking into the room.

In this embodiment, a reinforcing material 12 is provided at the joint between the pillar extension 3 and the cross member 7.
However, it is also possible to directly weld the crank-shaped bent portion 9.

<Effects of the Invention> As described above, according to the present invention, even when water droplets enter the cross member, it is possible to effectively prevent the water droplets from leaking into the vehicle interior. In addition, the water drain holes can prevent moisture from remaining inside the cross member, which is highly effective in preventing corrosion due to rust.

[Brief explanation of the drawing]

FIG. 1 is a cutaway perspective view of a cross member according to the present invention, and FIG. 2 is a partially exploded perspective view of a joint between a pillar extension and a cross member. 1... Body outer, 2... Front pillar inner, 3... Pillar extension, 4... Flange, 5... Bottom plate, 6... Drain hole, 7... Cross member, 8... Body inner panel, 9 ,1
3... Crank-shaped bent part, 10... Flange, 1
1... Bottom plate, 12... Reinforcement material.

Claims (1)

[Scope of Claim for Utility Model Registration] A cross member structure with a hollow cross section that constitutes a strength member of a vehicle body by being joined to a pillar extension that protrudes toward the interior of a vehicle from a pillar having a hollow structure, Both ends of the bottom plate of the pillar extension are bent downward in a crank shape, the free end of the bottom plate of the pillar extension is bent upward in a crank shape, and the bent part of the cross member is formed on the upper surface of the bent part of the pillar extension. are polymerized and joined,
and a cross for a vehicle, characterized in that the pillar has a water drain hole at a joint with the pillar extension along the bottom plate of the pillar extension to communicate the inside of the cross member and the inside of the pillar. Member structure.