JP4017791B2 - Floor structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a floor structure in a cab, a loading platform or the like of a vehicle.
[0002]
[Prior art]
FIGS. 5 to 7 show an example of a conventional floor structure constituting a loading platform of a vehicle. In this kind of floor structure, a floor panel 1 forming a loading surface of the loading platform is crossed in the vehicle width direction. 2 and a long structure 3 extending in the longitudinal direction of the vehicle are reinforced from the lower surface side.
[0003]
Here, each of the cloth 2 and the long 3 has groove portions 2a, 3a having a substantially U-shaped cross section, and flange portions 2b, 2c, 3b, 3c projecting outward at the upper ends of the groove portions 2a, 3a. Each of the flange portions 2b, 2c, 3b, 3c is fixed to the lower surface of the floor panel 1 by spot welding.
[0004]
At the intersection between the cloth 2 and the long 3, a structure in which the lower cross 2 is folded into a crank shape and retracted so as not to interfere with the long 3 disposed on the upper layer side in the illustrated example. Adopted.
[0005]
[Problems to be solved by the invention]
However, in such a conventional structure, after the flanges 2b and 2c of the cross 2 are spot-welded to the lower surface of the groove 3a of the longe 3 at the intersection of the cross 2 and the longe 3, and both are assembled, Since the floor panel 1 is placed thereon and the flanges 2b, 2c, 3b, 3c of the cloth 2 and the longe 3 are spot-welded and fixed to the floor panel 1 together, The strength at the intersection between the cross 2 and the long 3 is likely to be relatively weak, and the assembly process of the cross 2 and the long 3 and the assembly process of the cross 2 and the long 3 to the floor panel 1 are required, respectively. There has been a problem of causing an increase in productivity and a decrease in productivity.
[0006]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a floor structure that is high in strength at a crossing portion of a cross and a long and that is low in cost and good in productivity.
[0007]
[Means for Solving the Problems]
The present invention is a floor structure in which the lower surface of a floor panel is reinforced with a lattice structure of crosses and longes forming a trough shape, and a bead is formed in one of the grooves at the crossing part of the cross and the longe on the upper layer side. arrangement, and the lower layer the other cross portion disposed side formed so as to overlap with the one-bi over de top, and the top of the bead which is formed on the one of the groove, is polymerized on top of the bead In this way, the top of the bead formed on the other side is spot welded together with the floor panel together with the three pieces , and the cross and long flanges on both sides sandwiching the spot welded portion are also three together with the floor panel. It is characterized by spot welding by sheet-by-sheet .
[0008]
Thus, in this way, the strength of the crossing portion is greatly improved by forming the beads on both the cross and the longe, and in addition, the top and flange portions of the cross and longe beads are connected to each other . By spot welding together with the floor panel together with three pieces, the cloth, the longe and the floor panel are assembled together in a single process, so that the load is shared in a balanced manner. In addition, the strength at the intersection between the cross and the longe will be greatly improved, and the process of spot welding the cross and the longe in advance before assembly of the floor panel will be omitted, improving productivity and reducing costs. Will be planned.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0010]
1 to 4 show an example of an embodiment for carrying out the present invention, and portions denoted by the same reference numerals as those in FIGS. 5 to 7 represent the same items.
[0011]
In the present embodiment, the case of a floor structure that constitutes a loading platform of a vehicle is illustrated, and in particular, in the illustrated floor structure, the cross 2 and the long side 3 that are arranged at the rearmost side of the vehicle The intersection with the end is shown.
[0012]
A bead 3d extending in the longitudinal direction is formed in the groove 3a at the end portion of the longe 3 disposed on the upper layer side at the intersection, and the cross 2 disposed on the lower layer side is formed. The intersecting portion is formed to overlap with at least the bead 3b at the end of the long 3.
[0013]
That is, on one side that forms the vehicle front side of the cross 2, the flange portion 2 b and the standing wall portion of the groove portion 2 a are opened to a substantially W-shaped shape corresponding to the cross-sectional shape of the longe 3. A portion corresponding to the bead 3d forms a bead 2d on the cross 2 side.
[0014]
Here, the bead 2d on the cross 2 side can be continuously extended to the other side of the cross 2 on the vehicle rear side as necessary.
[0015]
Further, the bead 3d on the longe 3 side only needs to be formed at least near the intersection with the cross 2, and the bead 3d is not necessarily formed over the entire length of the longe 3.
[0016]
The end of the groove portion 3a of the long 3 rises along the other standing wall portion of the cross 2 to form a flange portion 3e continuous with the flange portions 3b, 3c on both sides of the long portion 3e. Is superposed on the flange 2c on the other side of the cloth 2.
[0017]
Then, the top of the bead 3d formed in the groove 3a of the longe 3 and the top of the bead 2d formed on the cross 2 side are spot-welded together with the floor panel 1 placed on the upper side thereof, The flange portions 3b, 3c on both sides of the longe 3 sandwiching the spot welded portion and the flange portion 2b on one side of the cross 2 are spot welded together with the floor panel 1 in the same manner as described above. The flange 3e formed at the end of the groove 3a of the longe 3 and the flange 2c on the other side of the cloth 2 are also spot welded together with the floor panel 1 in a three-piece manner.
[0018]
Thus, in this manner, in addition to the strength of the intersection by itself to the formation of the bead 2d, 3d both cross 2 and longitudinals 3 is significantly improved, the beads of cross-2 and longitudinals 3 By spot welding the tops of 2d and 3d and the flanges 3b, 3c and 2b together with the floor panel 1, the cross 2, the long 3 and the floor panel 1 can be assembled together in one step. Thus, strong fixation is performed so that the load is shared in a balanced manner.
[0019]
Therefore, according to the above embodiment , the top of each of the beads 2d and 3d of the cross 2 and the longe 3 and the flanges 3b, 3c and 2b are spot welded together with the floor panel 1 so that the cross 2 and the long 3 And the floor panel 1 can be assembled together in a single process, so that the load at the intersection of the cross 2 and the longe 3 can be strengthened so that the load is shared in a balanced manner. The process of spot welding the cloth 2 and the longe 3 in advance before assembling the floor panel 1 can be omitted, which can greatly improve productivity and significantly reduce costs. Can do.
[0020]
Further, the cross 2 and the longe 3 can be accurately positioned by overlapping the beads 2d and 3d at the crossing portion of the cross 2 and the longe 3 partially in the vicinity of the top and polymerizing them.
[0021]
The floor structure of the present invention is not limited to the above-described embodiment. In the drawing, the crossing portion between the cross arranged at the rearmost of the vehicle and the rear end portion of the longe is illustrated. However, it is also possible to apply the same to the crossing part between the two middle parts. In such a case, the shape applied to one side of the cross in FIG. What is necessary is just to superimpose the middle part of Longi, it can apply also to a cab other than the loading platform of a vehicle, Furthermore, you may use as floor structures other than a vehicle, and others, this invention Of course, various changes can be made without departing from the scope of the present invention.
[0022]
【The invention's effect】
According to the above-described floor structure of the present invention, the top part of each bead of the cross and the long part and the flange part are spot welded together with the floor panel in a three-piece manner, so that the three parts of the cross, the longe and the floor panel can be obtained in one step. Since it can be assembled in one piece, it can be firmly fixed so that the load is shared with each other in a balanced manner, and the strength at the intersection of the cross and the longe can be greatly improved compared to the conventional one. It is possible to omit the step of spot welding the cloth and the longe in advance before assembling so that the productivity can be greatly improved and the cost can be remarkably reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of an embodiment for carrying out the present invention.
2 is a cross-sectional view taken along arrow II-II in FIG.
3 is a cross-sectional view taken along arrow III-III in FIG.
4 is a cross-sectional view taken along arrows IV-IV in FIG.
FIG. 5 is a perspective view showing a conventional example.
6 is a cross-sectional view taken along arrow VI-VI in FIG. 5;
7 is a cross-sectional view taken along arrow VII-VII in FIG.
[Explanation of symbols]
1 floor panel 2 cross 2a groove 2d bead 3 longe 3a groove 3d bead

Claims (1)

It is a floor structure that reinforces the lower surface of the floor panel with a lattice structure of cloth and longes that form a trough shape, and a bead is formed in one of the grooves at the crossing part of the cloth and longes, and is arranged on the upper layer side. the other cross portion disposed on the lower layer side is formed so as to overlap with the one-bi over de top, and the top of the bead which is formed on the one of the groove, the other so as to overlap the top of the bead Spot weld the top of the bead formed on the side together with the floor panel together with the floor panel , and the cross and long flanges on both sides sandwiching the spot welded part together with the floor panel Floor structure characterized by welding .

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