JPH0291353A - Floor panel - Google Patents

Abstract

PURPOSE:To enable the titled panel to be lightweight and to have sufficient strength by fitting together an upper steel plate with a lower steel plate, and sandwiching the peripheral part of the lower plate with that of the upper plate and performing caulking at prescribed places, and then filling inorganic filler between the upper and lower plates. CONSTITUTION:An upper plate 2 is formed nearly in a square shape, and a plurality of connecting parts 6 for connecting the projected part 5 of a lower plate 3 are provided at prescribed places. Next, the upper plate 2 and the lower plate 3 are put together, and the peripheral part 11 of the upper plate 2 is bent so as to surround the peripheral part 7 of the lower plate 3, and they are pressedly joined, and then the joined part is caulked 12 at prescribed positions. Thereafter, the projected part 5 of the lower plate 3 is joined to the upper plate 2 by caulking the end part 10 thereof with the connecting part 6. And inorganic filler 4 is forcibly filled into the hollow part formed by the upper plate 2 and the lower plate 3. Thus, manufacture can be facilitated, enabling cost reduction to be achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a floor panel that is laid on a reference floor surface to form a double floor.

(Prior technology) A floor panel is laid on a standard floor surface such as a concrete floor via support legs, and a free space is secured between the floor panel and the standard floor surface in which cables, ventilation ducts, etc. can be placed. BACKGROUND OF THE INVENTION Multi-floor structures, ie seven-access floors, are known.

Floor panels used for the above raised access floor include, for example, those made of die-cast aluminum with integrally molded reinforcing ribs in the form of a lattice, those made of GRC, those made of particle board, and those made of pressed steel back plate with press molding. Some are known in which ribs are applied to form a lattice-like structure, and these are spot welded to a pressed steel plate top plate, and others have a structure in which particle board or reinforced cement board is sandwiched between steel plates.

(Problems to be Solved by the Invention) Among the conventional techniques, aluminum die-cast floor panels are expensive to manufacture, and forming reinforcing ribs increases the thickness of the panel. Not only is it difficult to make the finished height of the floor sufficiently low, but it also has the disadvantage that the area before walking is large.

In addition, floor panels made of GRC have the disadvantage that a portion of the coat is easily destroyed because the glass fibers are not sufficiently distributed around the peripheral edge of the panel.

Floor panels made of particle board have the disadvantage that the panel must be thick to obtain sufficient strength.

In addition, floor panels made of pressed steel plates are susceptible to bending, do not have sufficient strength, and are susceptible to distortion and deformation due to welding.Furthermore, they have the disadvantage of being prone to distortion when walking on them.

A floor panel having a structure in which particle board or reinforced cement board is sandwiched between steel plates has disadvantages in that it tends to be heavy, has poor floor construction properties, and is expensive to manufacture.

The present invention has been made in view of the problems of the conventional technology, and its purpose is to provide a lightweight and sufficient strength, easy to manufacture, and cost reduction. The objective is to provide a floor panel that can

(Means for Solving the Problems) In order to achieve the above object, the floor panel of the present invention is a floor panel made of a steel plate consisting of an upper surface plate and a lower surface plate, in which the peripheral edge of the upper surface plate is connected to the peripheral edge of the lower surface plate. The upper surface plate and the lower surface plate are clamped together and caulked at a predetermined location on the peripheral edge portion, and the top of the convex portion formed on the lower surface plate and the joint portion of the upper surface plate are connected. The structure is characterized by filling the hollow part formed by the inorganic filler with an inorganic filler.

(Function) According to the floor panel having such a configuration, after the upper surface plate and the lower surface plate are integrated by pressing the peripheral edges together by press working, in order to perform caulking, a metal fitting is formed in advance and the upper surface plate and the lower surface plate are joined together. Compared to the case where a face plate is combined, there are no dimensional problems in manufacturing. Furthermore, even when a load is applied to the floor panel, the structure that supplements the connection at the peripheral edge prevents the upper and lower panels from shifting or becoming uncoupled due to bending.

In addition, the inorganic filler filled in the hollow part of the floor panel has the effect of a beam along the sides of the floor panel, and the filling layer is thick in some corners, increasing the strength of the floor panel. It's increasing.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

The floor panel 1 is constructed by integrally joining an upper plate 2 and a lower plate 3 made of steel plates, and sealing an inorganic filler 4 in a hollow portion formed by both plates 2.3.

The upper plate 2 has a substantially square shape as a whole, and is provided with a plurality of coupling portions 6 at predetermined locations to be coupled to the convex portions 5 of the lower plate 3.

The lower plate 3 is surrounded by an inclined wall 8 on the inside of the peripheral edge 7;
A bottom portion 9 is formed, and a plurality of convex portions 5 are provided at predetermined positions on the bottom portion 9. The convex portion 5 is formed into a substantially hemispherical shape, and is formed to protrude so that the top portion 10 comes into contact with the joint portion 6 of the top plate 2.

Here, to explain in detail the structure of the floor panel l, the upper surface plate 2 and the lower surface plate 3 molded as described above are put together, and the peripheral edge 11 of the upper surface plate 2 surrounds the peripheral edge 7 of the lower surface plate 3. They are bent and joined together by crimping, and caulking 12 is made at a predetermined position on the joined peripheral edges 7, II. That is, since the vertical movement L of the bottom plate 3 is suppressed by the base 30, the crimped portion will not be opened due to the downward load of the bottom plate 3, and the movement of the top plate 2 and the bottom plate 3 will be prevented. Horizontal movement M is suppressed by caulking 12 to prevent the top plate 2 and bottom plate 3 from coming apart (see FIG. 3).

Further, the convex portion 5 of the lower surface plate 3 is combined with the upper surface plate 2 by caulking its top portion 10 with the joint portion 6. An inorganic filler 4 made of mortar is press-fitted into the hollow portion formed by the top plate 2 and the bottom plate 3. The inorganic filler 4 is formed into a beam shape at a position along the peripheral edge of the floor panel 1, and the filler layer is formed thick near the corner portion 15.

Note that a corner portion 15 formed so that the upper surface plate 2 and the lower surface plate 3 are aligned has a quarter-circular stepped portion 13 and a cutout portion 14.
A locking groove l6 is formed on the back side.

A support leg 17 is provided slightly inwardly of each corner portion 15, and is threadedly engaged with a screw hole member 1B press-fitted into the floor panel 1 to be vertically adjustable. has been done. Note that 19 in the figure indicates a closing plate that is detachably attached to a wiring opening provided in the floor panel 1.

In the free access 70a 20, a plurality of floor panels 1 are laid on a reference floor surface 21, and four corner portions 1
The floor panels 1 are formed by connecting the floor panels 1 to each other by a connecting member 22 at a position where the floor panels 5 are gathered together. Note that a cut panel 23 is appropriately laid down at the half end portion on the wall surface side.

(Effects of the Invention) As explained above, according to the floor panel of the present invention,
Since the peripheral edges of the upper and lower plates are crimped and integrated and caulked, it is possible to prevent the upper and lower plates from shifting or becoming uncoupled due to bending.1. In addition, manufacturing is easy without causing problems in dimensional accuracy.

Further, by forming the outer periphery of the floor panel with an inclined wall, it is possible to prevent damage to the material and decrease in accuracy during press working. In this case, the strength of the inclined wall is slightly weaker than that of the vertical wall, but the inorganic filler filled in the hollow part of the floor panel forms a beam along the periphery, and the filled layer forms at some corners. By forming the floor panel thickly, the floor panel can be lightweight and have sufficient strength. Furthermore, this inorganic filler has a sound-absorbing effect, reducing noise generated before walking.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the floor panel of the present invention;
Figure 2 is an enlarged sectional view of the peripheral edge, Figure 3 is an operational view of the peripheral edge, Figure 4 is an enlarged sectional view of the protrusion, Figure 5 is a back view of the floor panel, and Figure 6 is an enlarged sectional view of the peripheral edge. , is a perspective view of a raised floor using the floor panel of the present invention. 2...Top plate, 3...Bottom plate, 4...Inorganic filler, 5...Protrusion, 6...Joining part, 7...Periphery of bottom plate, 11...・Periphery of top plate, 12...Caulking. Semi-25 Figure 0 Inventor Tetsuo Tobikawa's office

Claims (1)

[Claims] (1) In a floor panel made of a steel plate consisting of a top plate and a bottom plate, the periphery of the bottom plate is sandwiched between the periphery of the top plate and caulked at a predetermined location on the periphery; A floor characterized in that the top of a convex portion formed on a lower plate is connected to a joint portion of the upper plate, and a hollow portion formed by the upper plate and the lower plate is filled with an inorganic filler. panel.