JPS6036529Y2 - car body structure - Google Patents

Description

[Detailed description of the invention] This invention relates to an automobile body structure in which the strength of the back panel of the cabin is increased.

The structure of the conventional cabin back panel was as shown in Figure 1.

That is, 1 is a back panel, and the lower end of this back panel 1 is welded to the rear surface of a cross member 2.

The back panel 1 is provided with a bead 3 in the longitudinal direction, and this bead 3 ends just before the joint with the cross member 2.

Since the conventional back panel was constructed as described above, the strength near the joint with the cross member 2 was not sufficient, and the back panel and cross member were gradually twisted due to twisting when the car turned a curve etc. There was a concern that it would peel off.

In addition, some truck boxes have a bead that extends to the bottom edge of the board to drain water (Utility Model No. 53-5371).
No. 5) is known, but no consideration was given to the strength near the joint.

This idea was made in order to eliminate the above-mentioned problems with the conventional ones, and it is an automobile in which a cross member with a U-shaped cross section with an opening facing downward is attached to the lower end of the back panel inside the cabin. In this vehicle body structure, a bead is formed up to the lower end of the back panel, and a recess corresponding to the bead is provided on the rear surface of the cross member, and the recess and the bead of the back panel are engaged and closely joined, and the cross member is By joining the cabin floor panel to the bottom surface and providing seatbelt anchorages near the cross member of this floor panel, the strength of the back panel is increased and the vibration-proofing effect of the back panel is improved. It is an object of the present invention to provide an automobile body structure in which the torsional rigidity of the member is improved and furthermore, the load acting on the anchorage of the seat belt can be reliably received.

An embodiment of this invention will be described below with reference to the drawings.

FIG. 2 shows a cabin having an automobile body structure according to an embodiment of the invention, and FIG. 3 shows a partially enlarged perspective view thereof.

In the figure, a bead 3 is formed on the back panel 1 up to the lower end, and a recess 2a is formed on the rear surface of a cross member 2 disposed inside the cabin of the back panel 1 at a portion corresponding to the bead 3. , the bead 3 and the recess 2a of the cross member 2 are engaged and closely welded.

In the figure, 4 is a vehicle body floor welded to the lower surface of the cross member 2, and 5 is a belt anchorage provided on the lower surface of the vehicle body floor 4.

According to the vehicle body structure of this embodiment having such a configuration, since the bead is formed up to the lower end of the back panel, the strength of the back panel is increased and the vibration-proofing effect of the back panel is improved.

Furthermore, the torsional rigidity of the cross member increases, which increases the rigidity of the entire cabin and contributes to increasing the strength of the belt anchorage.

Furthermore, when removing the bead midway through conventional methods, a wrinkle press was required to prevent distortion, but since this is no longer necessary, the workability of the back panel is improved.

As described above, according to this invention, in an automobile body structure in which a cross member having a U-shaped cross section with an opening facing downward is attached to the lower end inside the cabin of the back panel, the back panel at the rear end of the cabin is attached. A bead is provided all the way to the lower end, a recess is provided on the rear surface of the cross member corresponding to the bead, these are engaged and closely joined, and the floor panel of the cabin is joined to the lower surface of this cross member. By providing a belt anchorage for the seat belt nearby, it is possible to improve the vibration isolation effect of the back panel, increase the torsional rigidity of the cross member, and improve the workability of the back panel.
Moreover, there is an effect that the load of the anchorage of the seat belt can be reliably received.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the vehicle body structure at the rear of the conventional cabin;
FIG. 2 is a rear perspective view of a cabin equipped with a vehicle body structure according to an embodiment of the invention, and FIG. 3 is a partially enlarged perspective view of FIG. 2. 1...◆Bank panel, 2...Cross member 2a...Cross member recess, 3...
····bead.

Claims (1)

[Scope of utility model registration request] In a vehicle body structure in which a cross member having a U-shaped cross section and having a top wall, a front wall, and a rear wall is provided in the width direction of the vehicle body at the lower end of the back panel at the rear end of the floor of the cabin, the back panel has a plurality of beads. A plurality of recesses are provided that protrude toward the inside of the cabin in the longitudinal direction to a lower end position that overlaps with the cross member, and are recessed to match the shape of the bead from the rear wall to the upper wall of the cross member, The lower edge of the back panel and the rear wall of the cross member are overlapped and closely joined, while the cabin floor panel is joined to the lower surface of the cross member, and the seat belt belt is attached near the cross member on the lower surface of this floor panel. An automobile body structure characterized by the provision of an anchorage.