JPS6113417Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a floor structure of an automobile cab used in a cab over truck or the like.

If the width of the cab is large, the floor may be constructed of three panels: left and right side panels and a center panel that connects the side panels.

When constructing a floor with three panel materials in this way, conventionally, as shown in FIGS. 1 and 2, the inner edge of the side panel B is overlapped on the outer edge of the center panel A, and the flange The inner flange D of the floor frame C having a channel shape is overlapped with the lower surface of the outer edge of the center panel A, and the three parts are welded and fixed by spot welding or the like. Further, the outer flange E of the floor frame C is welded to the lower surface of the side panel B, so that the floor frame C covers the joint between the two panels A and B.

However, the tire F is located below the side panel B.
Because of this arrangement, high-pressure water splashed from the tire F infiltrates into the floor frame C from the joint surface between the outer flange E and the side panel B, travels along the lower surface of the side panel B, and enters the center panel A. There was a risk that it would enter the cab from the overlapping surface with side panel B.

For this purpose, in the past, a sealer G was applied to the joint between the outer flange E and the side panel B and the joint between both panels to prevent water from entering. Both panels A, B
If it is necessary to attach the seat bracket H to the overlapping part of the seat brackets, the bonding properties at this bracket part will deteriorate, and the sealing performance of the sealer G will deteriorate, or cracks will occur in the sealer G due to twisting of the cab, etc. The disadvantage was that water easily entered.

In addition, in order to eliminate such problems caused by water intrusion, for example, as disclosed in Japanese Utility Model Application Publication No. 55-124370, the inner edges of the side panels are bent downward to form a center panel. There is a device in which water that is heading toward the joint with the side panel is made to drip from the bent edge (the inner edge of the side panel).

However, in this case, the bent edge of the side panel becomes the terminal edge, and since this terminal edge is located inside the closed section of the floor frame, it is painted after assembly to improve the rust prevention effect of the cab. Even if this is done, the paint coverage is poor on the inner edge of the side panel, which exists as a terminal edge.

Therefore, if water is allowed to drip from the inner edge (bent edge) of the side panel as in the conventional example, the inner edge of the side panel will easily rust due to this water. Moreover, since an independent bending step is required to provide the bent portion, there is a problem in that the number of processing steps for the side panel increases and the cost increases.

This invention was made in view of the above, and
By slightly changing the shape of the side panel, the purpose is to prevent water from seeping into the cab even if cracks occur in the sealer.

That is, in the present invention, as shown in FIG.
These three parts are overlapped on the inner flange 3a and spot welded. Incidentally, in this overlapping, the center panel 1 and the inner flange 3a of the floor frame 3 are directly joined by sandwiching the outer edge of the center panel 1 between the inner flange 3a and the side panel 2. Further, as shown in the figure, the outer flange 3b of the floor frame 3 is joined to the lower surface of the side panel 2 to reinforce this panel 2, and the joined part of both the panels 1 and 2 is covered with the floor frame 3. .

Then, by bulging out a part of the side panel 2 downward between the inner and outer flanges 3a and 3b of the floor frame 3 to form a bead 2a, the outer flange 3 of the side panel 2 and the floor frame 3
Even if water enters between the bead 2a and the bead 2a, the water is allowed to drip from the bead 2a. In addition, in the figure, 2b is the outer flange 3b of the floor frame 3.
3c is a water drain hole provided at the bottom of the floor frame 3, 4 is a sealer applied to each joint, and 5 is a tire.

In the above configuration, since the joint between the center panel and the side panels 2 is covered with the floor frame 3, there is no possibility that water splashed from the tire 5 will directly collide with the joint between the panels 1 and 2.

Additionally, water flowing along the bottom surface of the side panel 2 may infiltrate into the floor frame 3 through cracks or the like formed in the sealer 4; Since a bulging bead 2a is formed, the infiltrated water adhering to the lower surface of the side panel 2 is absorbed by this bead 2.
Water drips from a into the floor frame 3 and drains into the drain hole 3.
It is ejected from c to the outside of the frame. Therefore, even if a crack occurs in the sealer 4, there is no risk of water penetrating into the cab via the lower surface of the side panel 2.

Also, by bulging out the side panel 2 downward between the inner flange 3a and the outer flange 3b of the floor frame 3, it penetrates into the interior of the floor frame 3 and passes along the lower surface of the side panel 2, causing both panels 1, Since the water that is about to flow toward the joint of the beads 2a is dripped from the bulging bead 2a to perform so-called draining, an independent forming process (bending process) is not required as in the conventional method. First, the bulging portion (bead 2a) that performs a draining action can be processed simultaneously when the side panel 2 is formed. Therefore, there is no need to further increase the processing steps for the side panel 2, and an increase in cost can be prevented.

Furthermore, even if there is no end edge with poor coating coverage inside the closed cross section of the floor frame 3, and even if a sufficiently thick coating film is not formed on the inner edge of the side panel 2, Since water does not reach this inner edge (junction between center panel 1 and side panel 2), rusting on the inner edge of side panel 2 (junction between both panels 1 and 2) can be suppressed, and problems caused by rust can be suppressed. This can be avoided.

In the embodiment, the bead 2a is located near both panels 1 and 2, such as near a seat bracket (not shown).
Although the bead 2a is formed only in the portion where the degree of adhesion of the bead 2 is deteriorated, it may be formed in the entire area in the front-rear direction. In addition, in the embodiment, by forming an auxiliary bead 2b on the side panel 2 along the outside of the outer flange 3b of the floor frame 3, the floor frame 3 is
Although this is intended to reduce water intrusion into the interior, it is not necessarily necessary to provide an auxiliary bead.

As explained above, in the present invention, the inner end of the side panel is overlapped with the end of the center panel on the inner flange of the floor frame, both panels are joined, and the joined part of both panels is covered with the floor frame. Therefore, there is no risk that water splashed by the tire house will directly collide with the joint. Further, at least a portion of the side panel is formed to bulge downward between the inner and outer flanges of the floor frame, so that water that tends to flow toward the inner edge of the side panel (the joint between the two panels) drips. Therefore, even if water infiltrates the inside of the floor frame, it will not reach the joint between both panels (the inner edge of the side panel). Therefore, the draining action of such a bulge can suppress rusting on the inner edge of the side panel and the joint between the two panels, and together with the covering action of the floor frame, the connection between the side panel and center panel can be reduced. It is possible to reliably prevent water from entering the cab from the joint, and the waterproofness of the cab floor can be increased. Furthermore, since water is drained by a bulge that can be processed simultaneously when forming the side panel, rather than a bent part that requires an independent bending process, the processing steps for the side panel are further increased. This is not necessary, and thus it is possible to suppress the increase in cost due to the addition of a draining function.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a floor showing an example of a conventional floor, FIG. 2 is a sectional view of the main parts of the same, and FIG. 3 is a sectional view of the main parts of an embodiment of the present invention. 1...Center panel, 2...Side panel, 2
a...Bead, 3...Floor frame, 3a...
Inner flange, 3b... Outer flange, 5... Tire.

Claims (1)

[Scope of utility model registration request] In an automobile cab comprising left and right side panels forming the upper surface of a tire house, a center panel connecting the two side panels, and left and right floor frames reinforcing both the panels, a channel material with a flange is used. A floor frame is constructed, and the inner end of the side panel is overlapped and joined to the upper surface of the end of the center panel on the inner flange of the floor frame, and the joined part of both panels is covered with the floor frame, and the side panel A floor structure for an automobile cab, characterized in that at least a portion of the floor frame bulges downward between the inner and outer flanges of the floor frame.