JP4969213B2 - Double floor panel - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a floor panel made of a metal hollow floor panel (hereinafter also simply referred to as a panel) composed of a metal upper surface plate and a lower surface plate, which has been newly devised in terms of strength and handling surface.

  Conventionally, double floor panels for enabling free underfloor wiring have been proposed in various structures using various materials, and many are provided for practical use.

  In such a floor panel, from the viewpoint of manufacturing labor, material cost, manufacturing cost, etc., a plain steel plate upper surface plate that is not provided with uneven portions, and a bottom plate that is formed by pressing the steel plate to form reinforcing ribs. A metal hollow panel which is superposed on the upper surface plate to form a united structure to ensure strength has been widely used.

  In the metal hollow floor panel as described above, concave or convex ribs or grooves, or concave or convex portions that are press-molded for reinforcement are exposed on the lower surface side (or the back surface of the lower surface plate). And because the back of the panel is a slippery metal surface, stacking the panels together (or stacking), the stacked state is not stable, and the stacked panel often collapses with a slight vibration or small impact. In addition to requiring extra effort, it is also dangerous to work.

  Conventionally, in order to improve the instability of the stacking state as described above, a small concave portion that fits at the time of stacking is provided at the corner of the upper surface of the panel, and a corresponding small convex portion is provided at the lower surface of the panel, and the concave and convex portion is fitted at the time of stacking. Techniques to be combined are proposed in Patent Documents 1 and 2 and the like.

  However, in order to stably maintain the stacking state of the panel, the above-described prior art has a configuration in which a small concave portion is provided on the upper surface plate of the panel and a small convex portion corresponding to the lower surface plate. There was a difficulty in requiring a mold and complicating the press mold.

On the other hand, the uneven part was not related to the panel strength at all, but the plain top plate was lined with the bottom plate with reinforcing ribs so that the strength was secured. However, the portion of the upper surface plate corresponding to the portion where the ribs of the lower surface plate are provided is in a state of floating from the lower surface plate, so there is no backing by the abutted lower surface plate, and therefore the strength is high. I cannot deny that I am worried about. In particular, when a concentrated longitudinal load is applied to such a part, there is a concern that the upper surface plate may be dented.
JP-A-11-81634 Japanese Patent No. 3762560

  In view of the above-mentioned problems in the metal hollow panel, the present invention provides not only the stability when stacking the panel, but also the provision of concave and convex portions that contribute to the improvement of the strength of the top plate of the panel. An object of the present invention is to provide a hollow metal panel.

The configuration of the panel of the present invention made for the purpose of solving the above-mentioned problems is an upper surface plate having a substantially flat entire area, and a lower surface plate integrated by being integrated with the back surface of the upper surface plate, and the outer periphery of the lower surface plate. And a reinforcing rib having a substantially rectangular shape in plan view that protrudes toward the lower surface along the lower surface plate, and a lower surface plate in which a reinforcing rib having an X shape in plan view protruding toward the lower surface on the diagonal line of the substantially rectangular rib is formed. In the metal hollow floor panel, the reinforcing rib provided on the bottom plate and corresponding to a substantially central portion of a portion where the substantially square reinforcing rib provided on the bottom plate and the X-shaped reinforcing rib intersect. A concave groove that also serves as a reinforcing rib longer than the width of the reinforcing rib when viewed from above is formed on the upper surface plate of the portion where the upper surface plate is not in contact with the lower surface plate due to the presence of the rib with respect to the outer periphery of the upper surface plate. setting toward the lower plate side in a straight line at 45 degree angle That one, the on the reinforcing rib of the lower plate of the portion corresponding to the concave grooves made in the convex portion provided in a width equal to the length of the reinforcing ribs projecting on the lower surface side, the upper plate and the lower When stacking the panels that are combined with the face plates, the convex portions of the upper panel are fitted into the concave grooves of the lower panel to be stacked. Is.

  In the above-described configuration, the present invention panel is such that the reinforcing ribs of the bottom plate are formed so as to form a substantially square shape when viewed from a plane provided in the vicinity thereof at least along the outer periphery of the bottom plate. Further, the reinforcing ribs of the lower surface plate are also provided on diagonal lines of the substantially square ribs.

  As described above, the upper surface plate joined to the lower surface plate provided with the reinforcing rib having a square shape in plan view and the reinforcing rib provided on the diagonal line of the rib is particularly wide in the crossing portion of the reinforcing rib of the lower surface plate. Since it is in a state of floating from the lower surface plate in area, there is anxiety in terms of strength compared to other parts (that is, the part where the lower surface plate abuts and is joined, or the part near the edge of the rib of the lower surface plate) There is something as described above.

  In view of this point, the panel according to the present invention is provided with a concave groove for reinforcement at a portion of the upper surface plate where anxiety of the strength surface is concerned, and a convex portion that fits into the concave groove is provided on the lower surface plate of the panel. This is the gist.

  The panel of the present invention has the above-described configuration, so that it is possible to reinforce the portion of the panel upper surface plate that is uneasy about the strength, and by providing the lower surface plate with a convex portion that fits into the concave groove for reinforcement, The concave groove and the convex portion for reinforcing the upper surface plate can be used as a misalignment prevention mechanism when stacking the panels.

  Next, embodiments of the panel of the present invention will be described with reference to the drawings. 1 is a plan view of an example of the panel of the present invention, FIG. 2 is a front view of the panel of FIG. 1, FIG. 3 is a rear view of the panel of FIG. 1, and FIG. 5 is an enlarged sectional view taken along line BB in FIG. 3, FIG. 6 is an end view taken along line CC in FIG. 1, FIG. 7 is a sectional view for explaining a caulking structure, and FIG. FIG. 6 is a cross-sectional view of a state in which the F is fitted into a reinforcing rib (concave groove) of the upper surface plate A of the upper panel P.

  In FIG. 1, the solid line indicates the configuration of the upper surface plate A of the panel P of the present invention, and the dotted line indicates the configuration of the lower surface plate B that is fused and integrated with the back surface of the upper surface plate A. Therefore, in the rear view of the panel P in FIG. 3, the configuration of the rear plate B is represented by a solid line, the outer peripheral edge of the upper surface plate A overlaps the outer peripheral edge of the rear plate B from the outside, and the overlapping portion is substantially vertical ( A side edge C is formed which is bent to the upper surface of the upper surface plate A).

  1 to 3, the upper surface plate A is a substantially flat plate made of a steel plate having a substantially square shape. The upper surface plate A is formed with a recessed portion 1 that is recessed on the inner side of the plate in order to pass cables through two locations on the right side and the lower side. The size and number of the recessed portions 1 are design matters and are arbitrary.

  Further, at the four corners of the upper surface plate A, when the corner portions of the other three panels are gathered, a throttle portion 2 having a ¼ arc shape that becomes a round hole for a countersunk screw as a whole is inclined around the slope 2a. It is formed with. In addition, the outer periphery of the upper surface plate A is bent approximately 90 degrees to the lower surface side including the recessed portion 1, and corresponding portions of the lower surface plate B described later are integrated to form a side edge C of the panel P.

On the other hand, the lower surface plate B is a rib having a flat pattern shown in FIG. 3, and provided with reinforcing ribs 3 and 4 and 5 and 6 formed in the uneven pattern shown in FIG.
The reinforcing rib 3 has a substantially rectangular shape when viewed from the plane where the four corners near the outer periphery are chamfered at a position slightly inside the outer peripheral edge of the lower surface plate B, and protrudes convexly toward the lower surface side of the lower surface plate B. Formed on the ribs.

  The reinforcing rib 4 protrudes in a convex manner on the lower surface side of the rib 3 having the same width as that of the rib 3 or slightly smaller than the rib 3 so that the plane pattern forms a substantially X shape. Is formed. Although the protrusion amount to the lower surface side of both ribs 3 and 4 is the same, whether it makes it the same is arbitrary. Further, in the rib 4 having a plane X shape, a rib 5 protruding concentrically toward the lower surface side is formed at a crossing portion having a substantially square shape when viewed from the plane.

  In the lower surface plate B, the four flat portions having a substantially trapezoidal shape surrounded by the reinforcing ribs 3 and 4 are concentrically formed at the center of each side of the rib 3 and the center of the lower surface plate B. A small-width rib 6 is formed between the ribs 5. The narrow rib 6 is arranged with a phase difference of about 45 degrees from the X-shaped rib 4. The height of the rib 6 (the amount of protrusion to the lower surface) is smaller than that of the ribs 3 and 4. Whether or not the height of the rib 6 is made smaller than that of the ribs 3 and 4 is arbitrary.

  The outer peripheral edge of the lower surface plate B on which each of the ribs 3 to 6 is formed also has the same recessed portion 11 as the recessed portion 1 formed on the upper surface plate A, and the narrowed portion 21 is formed at the four corners. Further, the outer periphery of the lower surface plate B is also bent by approximately 90 degrees toward the lower surface side, and is integrated with the bent portion of the upper surface plate A to form the side edge C of the panel P. In addition, the lower surface board B and the upper surface board A form the side edge C when pressing it repeatedly.

  As shown in FIG. 7, the upper surface plate A and the lower surface plate B having the above configuration are united and integrated by a caulking structure illustrated in FIG. 7 in a flat overlapping portion where the double-sided plates A and B come into contact with each other. . That is, in FIG. 7, 7 is a caulking hole having a bent edge 7a provided on the upper surface plate A, and 8 is a caulking provided on the lower surface plate B which is inserted into the bent edge 7a and is held by the edge 7a. Both holes 7 and 8 have a structure in which the bending edge 7a holds the hole 8 of the lower surface plate B around the entire circumference of the hole when crimped. It is formed in an integrated metal hollow panel P.

  In the panel P having the above configuration, the portion where the double-sided plates A and B are not in direct contact with each other, that is, the corresponding portion of the upper surface plate A having the ribs 3 to 6 projecting downward on the lower surface plate B is It is in a state where it floats without being pressed against or in close contact with the face plate B.

  As described above, when the area of the state where the upper surface plate A is lifted from the lower surface plate B is large, it is uneasy in terms of strength compared to a portion where the area is small. Examining this point in FIG. 1 (or FIG. 2), the portion where the rib 3 having the quadrangular shape in plan view and the X-shaped rib 4 intersect corresponds to the above-described strength uneasy portion.

Therefore, in the present invention, the reinforcing rib 9 of the upper surface plate A by the concave groove is provided in the substantially central portion of the above-described anxiety site in the upper surface plate A (see FIGS. 1 and 4). The reinforcing ribs 9 provided on the upper surface plate A can remarkably increase the strength of the strength uneasy portion. The reinforcing ribs 9, to meet the requirements of both the stability during reinforcing effect and stacking, that are arranged in a straight line at an angle of about 45 degrees with respect to the outer periphery of the upper plate A (or panel P).

In the present invention, the four reinforcing ribs 9 provided in the upper surface plate A in the above example are used as stabilizing members when the panel P is stacked, and therefore the portion corresponding to the rib 9 of the lower surface plate B. A convex portion 10 was provided as a convex portion projecting to the lower surface side of the lower surface plate B (see the crossing portion of the ribs 4 and 4) (see FIGS. 3 and 5). The convex portion 10 is fitted into the rib 9 by the concave groove of the upper surface plate A when the panel P is stacked . FIG. 8 is a cross-sectional view showing a state where the convex portion 10 of the lower surface plate B of the upper panel enters the concave groove of the reinforcing rib 9 of the upper surface plate A of the lower panel P.

  In the present invention, by providing the metal hollow panel P with the convex portion 10 on the upper surface plate A and the reinforcing rib 9 dedicated to the upper surface plate A and the lower surface plate B corresponding to this, the panels P are stacked. When the convex portion 10 provided on the lower surface plate B of the upper panel P is fitted into the reinforcing rib 9 formed by the concave groove with respect to the upper surface plate A of the lower panel P, stacking without misalignment becomes possible. .

  The present invention is as described above, and in the metal hollow floor panel, a concave groove that also serves as a reinforcing rib is formed on a portion of the upper plate corresponding to the reinforcing rib that protrudes toward the lower surface provided on the lower plate. On the other hand, on the rib of the lower surface plate corresponding to the concave groove of the upper surface plate, a convex portion protruding to the lower surface side is provided, and the panels obtained by stacking and combining the upper surface plate and the lower surface plate are stacked together. When the upper panel convex part is fitted into the lower concave groove, not only can this part of the top plate that is concerned about the strength of this type of hollow panel be reinforced exclusively Since the reinforcing rib by the concave groove can be used as a receiving groove for the convex portion provided on the bottom plate for stacking, its role and effect are not seen in the conventional products.

The top view of an example of this invention panel. The front view of the panel of FIG. The back view of the panel of FIG. The AA arrow expanded sectional view in FIG. The BB arrow expanded sectional view in FIG. FIG. 3 is an end view taken along the line CC in FIG. 1. Sectional drawing for demonstrating a crimping structure. Sectional drawing of the state which the convex part of the lower surface board B fitted in the reinforcement rib (concave groove) of the upper surface board A of the upper panel P.

Explanation of symbols

A Upper surface plate B Lower surface plate C Side edge 1,11 Upper, recessed portion for passing through the lower surface plate 2,21 Upper, throttle portion of the lower surface plate 3, 4, 5, 6 Reinforcing ribs provided on the lower surface plate B 7 Hole for caulking on top plate A
7a Bending edge 8 Hole for caulking of lower surface plate B 9 Reinforcing concave groove (reinforcing rib) provided on upper surface plate A
10 Convex part that fits into the concave groove (reinforcing rib 9) provided on the bottom plate B

Claims (1)

An upper surface plate that is substantially flat throughout, and a lower surface plate that is integrated and integrated with the back surface of the upper surface plate, and a reinforcing rib that has a substantially rectangular shape in plan view and protrudes toward the lower surface side along the outer periphery of the lower surface plate. In a metal hollow floor panel comprising a bottom plate having a reinforcing rib having a X-shape in plan view protruding on the lower surface side on a diagonal line of the substantially square rib, the substantially square shape provided on the bottom plate The upper portion of the portion where the upper surface plate is not in contact with the lower surface plate by corresponding to the substantially central portion of the portion where the reinforcing rib and the X-shaped reinforcing rib intersect and having the reinforcing rib provided on the lower surface plate. the face plate, while providing toward the lower surface plate side straight concave groove which also serves as a long reinforcing rib than the width of the reinforcing rib as viewed from a plane at an angle of approximately 45 degrees with respect to the outer periphery of the upper plate, wherein On the reinforcing rib of the lower surface plate of the portion corresponding to the concave groove, Protruding portions having a length equivalent to the width of the reinforcing rib protruding to the surface side, and when stacking the panels formed by overlapping the upper surface plate and the lower surface plate, the panel of the upper position is A double floor panel, wherein a convex portion is stacked by being fitted into the concave groove of a panel located at a lower position.

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