JP2008121301A - Panel for double floor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a metal hollow panel having recesses and projections which can secure the stability of the panel when it is stacked and also contribute to an increase in the strength of the upper surface plate of the panel. <P>SOLUTION: This metal hollow floor panel comprises an upper surface plate A generally flat in the entire area and a lower surface plate B which is placed on the rear surface of the upper surface plate A and formed integrally therewith and which has a reinforcement pattern for reinforcement by the recesses and projections formed in the generally entire area. Recessed grooves 9 serving also as reinforcement ribs are formed in the upper surface plate A at the portions corresponding to reinforcement ribs 3-6 formed on the lower surface plate B and projecting toward the lower surface. Projecting parts 10 projecting to the lower surface side are formed on the ribs 3-6 of the lower surface plate B corresponding to the recessed grooves of the upper surface plate A. The panels P each formed by placing the upper surface plate A on the lower surface plate B and forming them integrally with each other are stacked on each other, and the projecting parts 10 of the panel P positioned on the upper side are fitted to the recessed grooves 9 of the panel P positioned on the lower side. <P>COPYRIGHT: (C)2008,JPO&INPIT

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 lower plate that is formed by pressing the steel plate and forming reinforcing ribs A metal hollow panel which has been polymerized with the upper surface plate to obtain a combined structure to ensure strength has come to be often 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 problems is an upper plate having a substantially flat entire area, and a lower plate integrated by being integrated with the back surface of the upper plate, and reinforced almost throughout the entire area. In a metal hollow floor panel consisting of a concave portion for projection and a bottom plate formed with a reinforcing pattern by a convex portion, reinforcement is performed on the portion of the top plate corresponding to the reinforcing rib projecting toward the bottom surface provided on the bottom plate A concave groove serving also as a rib is provided, and a convex portion protruding toward the lower surface is provided on the rib of the lower surface plate corresponding to the concave groove of the upper surface plate, and the upper surface plate and the lower surface plate are overlapped. When stacking the combined panels, the convex portions of the upper panel are fitted in the concave grooves positioned lower.

  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 insert cables through two locations, 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 of being floated without being pressed or closely contacted 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. This reinforcing rib 9 is provided in a straight line at an angle of approximately 45 degrees with respect to the outer periphery of the upper surface plate A (or panel P) in order to satisfy both requirements of the reinforcing effect and stability during stacking. The angle at which the rib 9 is provided, the length of the rib 9, or the planar pattern of the rib 9 is not limited to the illustrated example.

  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 part 10 is provided as a convex part protruding on the lower surface side of the lower surface plate B (refer to FIGS. 3 and 5). Since this convex part 10 should just fit in the rib 9 by the concave groove | channel of the upper surface board A at the time of stacking of the panel P, the length, the width | variety, and arrangement | positioning pattern of the convex part 10 are on the rib 9 provided in the upper surface board A. Anything that satisfies the requirement of fitting is acceptable. Accordingly, the illustrated convex portion 10 is an example. FIG. 8 is a cross-sectional view showing a state in which the convex portion 10 of the lower panel B of the upper panel enters the concave groove of the reinforcing rib 9 of the upper panel 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 (4)

  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 that has a lower surface plate that is formed with a reinforcing recess and a convex pattern on almost the entire surface. In a metal hollow floor panel, a concave groove serving also as a reinforcing rib is provided in a portion of an upper surface plate corresponding to a reinforcing rib projecting toward the lower surface provided on the lower surface plate, while corresponding to the concave groove of the upper surface plate. On the rib of the lower surface plate, a convex portion projecting to the lower surface side is provided, and when the panels, which are formed by stacking the upper surface plate and the lower surface plate, are stacked together, the convex portion of the panel positioned at the upper level A double-floor panel characterized by being fitted into a concave groove located in the lower position.   The double floor panel according to claim 1, wherein the concave groove also serving as a reinforcing rib of the upper surface plate is provided in a portion where the upper surface plate is not in contact with the lower surface plate by the rib of the lower surface plate.   The reinforcing rib of the lower surface plate has a substantially rectangular shape when viewed from a plane provided in the vicinity thereof at least along the outer periphery of the lower surface plate, and is provided on a diagonal line of the substantially rectangular rib. 1 or 2 double floor panels.   4. The double floor panel provided with a concave groove serving also as a reinforcing rib of the upper surface plate provided at a portion corresponding to a portion where the reinforcing rib of the lower surface plate intersects.

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