JP3470836B2 - Floor panel - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor panel used for a double floor type OA floor such as a free access floor.

[0002]

2. Description of the Related Art Heretofore, various structures have been proposed for this type of floor panel, and the materials thereof are wide-ranging such as steel plate, aluminum die casting, iron plate, glass fiber, cement and particle board. Structurally, in consideration of earthquake resistance and load strength, not only a single plate but a honeycomb structure is formed inside the panel to improve the strength, or a composite of various materials mentioned above. It is also offered in a reinforced combination.

[0003]

In the above floor panel, it is desired that the floor panel be as light as possible in order to reduce the load on the construction floor and the labor during construction, and also have a predetermined strength, and walk. It is required to have quietness so that sound etc. does not echo. However, each of the conventional floor panels has merits and demerits, and it is the current situation that all of these problems cannot be solved.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a low-cost floor panel which is lightweight, excellent in strength, and quiet. .

[0005]

To achieve the above object, a first invention according to claim 1 is a recess having a through hole formed by drawing an upper plate and a lower plate made of steel plates in a thickness direction. And the upper and lower plates are integrally and integrally connected by connecting the inner peripheral edges of these recesses.

A second aspect of the present invention is the above floor panel, wherein a reinforcing material is embedded or filled in at least the recess of the upper plate.

[0007]

In the present invention, since the steel plates of the upper plate and the lower plate, which respectively form the recesses, extend in the thickness direction of the panel, the overall structure is such that a honeycomb structure is formed in two steel plates, The strength in the direction of thickness is significantly improved. In addition, by closing at least the concave portion of the upper plate with an appropriate reinforcing material, vibration of the upper plate and the lower plate is suppressed, the noise due to walking noise is reduced to improve quietness, and a further reinforcing effect is obtained. You can

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partial cross-sectional view of a floor panel, and FIG. 2 is a partial plan view. In these drawings, reference numerals 1 and 2 are an upper plate and a lower plate made of steel plates. The upper plate 1 and the lower plate 2 are formed with recesses 1A and 2A having a through hole 3 in the center thereof by subjecting the upper plate 1 and the lower plate 2 to planar drawing at equal intervals in the thickness direction.

The inner peripheral edge 2B of the steel plate forming the recess 2A of the lower plate 2 is the inner peripheral edge 1B of the steel plate forming the recess 1A of the upper plate 1.
The upper plate 1 is bent so as to wrap around
Also, the lower plate 2 is integrally and integrally connected. It should be noted that welding (spot welding) is applied to the connecting portion of the end portions 1B and 2B.

To close the recesses 1A and 2A, for example, a panel having a large number of projections corresponding to the plurality of recesses 1A of the upper plate 1 provided on the lower surface is separately prepared, and this panel is provided on the surface of the upper plate 1. A method of overlapping and adhering as necessary to cover the concave portion 1A can be considered. This processing method is used for the recess 2 of the lower plate 2.
The same applies to A, but at least the concave portion 1 of the upper plate 1
By closing only A, it is possible to obtain the flatness required for installing various equipment, furniture and fixtures on the floor panel and for walking.

As described above, a panel provided with a large number of convex portions corresponding to the concave portions 1A and 2A is superposed on the upper plate 1 and the lower plate 2 so as to cover the large number of concave portions 1A and 2A collectively. You can In this case, the large number of convex portions corresponding to the concave portions 1A and 2A correspond to the "reinforcing material" in claim 2.

As another method for closing the recesses 1A, 2A, each of the recesses 1A, 2A is filled with styrofoam, urethane or the like, and cement, hard rubber plate, hard plastic plate or the like is adhered to the surface as a coating material. There is a method in which the recesses 1A and 2A are individually closed to flatten the surfaces of the upper plate 1 and the lower plate 2. In this case, protective panels, sheets, etc. may be overlapped and adhered to the surfaces of the upper plate 1 and the lower plate 2 if necessary.

The recesses 1A and 2A may be made of different materials, and in some cases the recess 1A on the upper plate 1 side may be filled.
It is also possible to fill only the filler with the filler and fix the coating to the surface thereof. In this case, the filler and the covering material correspond to the “reinforcing material” in claim 2.

As a treatment for the recesses 1A, 2A, a member made of hard rubber, hard plastic, or the like having a truncated cone shape adapted to the shape and structure of the recesses 1A, 2A is individually formed, and the members are recessed 1A, 2A. It is also possible to adopt a means such as fitting them in and bonding them. In this case, a member made of hard rubber, hard plastic, or the like corresponds to the “reinforcing material” in claim 2.

In the illustrated example, the recesses 1A and 2A are mortar-shaped when viewed from above, and the through holes 3 are formed in a circular shape.
The recesses 1A and 2A can be formed in a cylindrical shape or a rectangular tube shape, and the through hole 3 may be polygonal.

FIG. 3 is a plan view showing the entire floor panel P of this embodiment. The number and arrangement of the recesses 1A and 2A (through holes 3) are not limited to the illustrated example. FIG. 4 shows an example of construction of this floor panel P. In the figure, F is a floor of a construction site such as an office, and S is a support leg.

In the floor panel P described above, the recess 1
Since the steel plates constituting A and 2A extend in the thickness direction of the panel, it is as if a honeycomb structure was formed in two steel plates, and the strength in the thickness direction is significantly improved. Further, by closing the recesses 1A and 2A with an appropriate reinforcing material, it is possible to suppress the vibration of the upper plate 1 and the lower plate 2 and reduce the noise caused by the walking sound, and at the same time obtain a further reinforcing effect. it can.

Further, the structure mainly made of steel plate can contribute to the weight reduction of the floor panel, and it is possible to reduce the load on the floor surface at the construction site and the labor at the time of construction.

[0019]

As described above, according to the present invention, a floor panel having both lightness, strength and quietness is adopted by adopting an integrated laminated structure of an upper plate and a lower plate made of steel plates having a recess. Can be obtained. Further, since its structure is relatively simple, it can be manufactured at a low cost and has effects such as high mass productivity.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing an embodiment of the present invention.

FIG. 2 is a partial plan view showing an embodiment of the present invention.

FIG. 3 is a plan view showing an embodiment of the present invention.

FIG. 4 is a side view showing a construction example of the embodiment of the present invention.

[Explanation of symbols]

1 Upper plate 2 Lower plate 1A, 2A recess 1B, 2B inner peripheral edge 3 through holes P floor panel S support leg F floor

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Claims (2)

(57) [Claims] 1. An upper plate and a lower plate made of a steel plate are drawn in a thickness direction to form recesses having through holes, respectively.
A floor panel characterized by connecting the inner peripheral edges of these recesses to integrally and integrally connecting the upper and lower plates. 2. The floor panel according to claim 1, wherein a reinforcing material is embedded or filled in at least the recess of the upper plate.