JPH0413317Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention is applicable to the floor surface of a room where computers, office automation equipment, etc. are installed (in a double floor structure used in the field of forming a raised floor) The present invention relates to floor panels, and particularly to improvements in floor panels comprising a core made of an inorganic material and lined with a metal plate on the back surface.

<Conventional technology and its problems> Conventionally, this type of floor panel was developed by Japanese Patent Laid-Open No. 1983-
There is a structure disclosed in Publication No. 43567,
In this conventional floor panel, the lower end opening of an insert fitting for a tubular level adjustment screw or support leg is fitted and locked into the rising edges of openings provided at the four corners of a metal plate (metal pan). The metal fitting was placed in a composite manner between a metal plate and a core (cement core) to prevent the nut from falling off.

However, when a bending force is applied to the metal plate due to the weight of the installed OA equipment, etc., the contact surface of the metal fitting is only the bottom of the tube, so the metal plate around the installation part is likely to bend and deform. This had the problem that it was easy to separate from the core, and the metal plate had cut and raised protrusions on the top surface.
Although the protrusions bite into the core body to prevent separation between the core body and the metal plate, which have different deformation rates, they are not provided in the metal fitting arrangement portion.

<Problem to be solved by the invention> The present invention was devised in view of the above-mentioned problems of the prior art, and its purpose is to prevent the level adjustment screw nut from falling out while also providing a metal plate. The goal is to completely eliminate separation between the core and the core.

<Means for solving the problem> The technical means taken by the present invention to achieve the above problem is to line the back side of a core made of inorganic material with a metal plate, and to arrange a large number of them widely on the top surface of the metal plate. In a floor panel having cut and raised protrusions cut into the core body and provided with nuts for level adjustment screws at the four corner portions, the nuts are integrally molded on a wide mounting plate, and the mounting plate are placed on the four corners of the metal plate and combined with the metal plate and core body by press molding, and the mounting plate is provided with a locking hole into which the protrusion on the metal plate is inserted and locked. be.

<Operation> By using the technical means described above, a large number of cut and raised protrusions provided on the upper surface of the metal plate bite into the core body, and the biting force over a wide range creates stress that tends to separate the metal plate and the core body. At the same time, the wide mounting plate integrally molded with the nut disperses the stress that tends to cause the nut to peel off around the nut where the cut and raised projections are not provided.

In addition, the nut for the level adjustment screw is combined with the metal plate and the core between the metal plate and the core, and the cut and raised protrusion on the top of the metal plate is inserted into the locking hole provided on the wide mounting plate. It is locked.

<Example> Hereinafter, an example of the implementation of the present invention will be described based on the drawings. In the drawing, A indicates a panel body, and the panel body A is a core made of mortar or an inorganic material such as G, R, or C. A metal plate a ₂ which is integrally provided with a cut-and-raised protrusion 1 on the upper surface lining the back surface of the core body a ₁ , and a metal plate a ₂ integrated with the four corner parts of the metal plate a ₂ via a mounting plate 4. It is formed from a nut 2 which is arranged and combined with the nut 2.

The metal plate _A2 is made by press forming a plate material cut to the size of the panel body A to be formed, and integrally forming a large number of cut and raised protrusions 1 on the upper surface, and communicating with the four corner parts. Hole 3... is drilled.

The cut and raised protrusion 1 is bitten into the core body a ₁ during press molding (core press) and is combined with the core body a _{1 .}
The projecting shape is a triangular cross section with openings on both opposing sides, a hat shape with a large _diameter head, or a Γ-shaped cross section as shown in the figure. , are formed in large numbers scattered over a wide area on the upper surface of the metal plate _A2 .

Nut 2 is the concrete foundation floor B of the building.
A level adjustment screw rod 6 is screwed and inserted to adjust the level of the surface (floating floor surface) of the panel main body A when it is laid on the support legs C which are vertically arranged in a grid pattern above. is installed at the four corners of the panel body A so as to be able to move up and down, and communicates with the top surface of the corner of the wide mounting plate 4, which is formed into a substantially rectangular planar shape along the corner edge of the metal plate _A2 . The metal plate a2 is integrally welded and fixed to the four corners of the metal plate _a2 via the wide mounting plate 4. In addition, the above-mentioned nut 2 has a protruding (erected) height from the top surface of the metal plate _a2 that is the same height as the height of the core body _a1 .
As shown in the figure, the height is set so that it is slightly recessed from the surface of the core body _a1 .

Further, the wide mounting plate 4 is provided with locking holes 5 into which cut and raised protrusions 1 near the corners of the metal plate _a2 are fitted and locked.

Then, the wide mounting plates 4 on which the nuts 2 are integrally molded are respectively arranged at the four corners of the metal plate _a2 , and the cut and raised projections 1... and the nuts 2...
Set the metal plate A ₂ in the lower press die with ... facing upward, place the hardened core A ₁ on top of it, and press it with the upper press die to cut and raise the protrusions 1... in a large number of cores over a wide range. A metal plate A ₂ is inserted into the core body A 1 to form a composite lining on the back surface of the core body A ₁ , and nuts 2 placed at the four corners of the metal plate A ₂ are integrated into the composite body _to form the panel body A. Form. That is, Natsu 2
is between metal plate _a2 and core body _a1 together with metal plate _a2 .
Compounded with a ₁ .

At this time, the upper and lower openings of the nut 2 are closed with stoppers to prevent the hardened core a ₁ from entering.

In addition, because of the above-mentioned configuration, by inserting and locking the cut-and-raised protrusions 1 near the corners into the locking holes 5, the positioning of the wide mounting plate 4 when setting it (the nuts 2 and (positioning of the metal plate _a2 with the communication hole 3) can be easily and reliably performed.

Therefore, the panel main body A configured as described above
The level adjustment screw rod 6 is screwed and inserted through the communication hole 3, and the fitting part 7 with a wide skirt provided at the tip of the screw rod 6 is placed in a grid pattern on the concrete foundation floor surface B of the building. The support leg C is installed in the insertion portion 8 on the approximately trapezoidal front surface of the support leg C, which is arranged upright in the shape of a
6), even if a load is applied to the panel main body A during use and stress is applied that tends to cause the metal plate a ₂ and the core body a ₁ to separate, the large number of cuts provided on the top surface of the metal plate a ₂ The wide-ranging biting force of the raising protrusion 1... is subjected to stress, and the wide mounting plate 4 integrally molded with the nut 2 tries to peel off the area around the nut 2 where the cut-raising protrusion 1 is not provided. Disperses the stress caused by

Furthermore, since the core body _a1 wraps around inside the locking hole 5, the fixation is strengthened.

Further, as shown in FIG. 4, the wall thickness of the core body a 1 is greater than one corner edge of the wide mounting plate 4 integrally equipped with the nuts ₂ , that is, the corner edge along the four corner edges of the metal plate a ₂ when placed. By forming the corner rising protective wall 9 as one body or integrally raised so as to be at the same height as the height, corner chipping at the four corners of the panel body A can be prevented when the panel body A is transported or stored. It is possible.

<Effects of the invention> The floor panel of the invention has the above-mentioned configuration, and the nut for the level adjustment screw is combined with the metal plate and the core between the metal plate and the core to prevent the nut from falling off. While achieving this, the following effects are also achieved.

A large number of cut and raised protrusions provided on the top surface of the metal plate bite into the press-molded core body in large numbers, and the biting force over a wide range not only causes stress that tends to cause the metal plate and the core body to separate, but also Furthermore, the wide mounting plate integrally molded with the nut disperses the stress that tends to cause peeling around the nut that is not provided with the above-mentioned cut-and-raised protrusion, thereby eliminating the bending deformation of the metal plate and preventing the metal plate and the core. Since it is possible to completely eliminate peeling from the bond, a stable bond can be maintained over a long period of time, resulting in long-term durability.

Furthermore, the cut and raised protrusions on the top surface of the metal plate are fitted and locked into the locking holes provided on the wide mounting plate, and the core body also wraps around and secures to the locking holes during press molding, making it even more effective. A strong bond can be obtained.

In addition, by inserting and locking the cut and raised protrusions near the corners of the metal plate into the locking holes, positioning when setting the wide mounting plate (positioning between the nut and the communication hole of the metal plate) is facilitated. It also has the effect of being reliable.

[Brief explanation of the drawing]

The drawings show an embodiment of the floor panel of the present invention; Fig. 1 is a vertical front view, Fig. 2 is a plan view of the same with a part cut away, and Fig. 3 shows a nut integrally molded on a wide mounting plate. FIG. 4 is a perspective view showing another embodiment; FIG. 5 is a partially enlarged cross-sectional view showing a state in which a level adjustment screw is screwed and placed on a support leg; FIG. 6 is a partially cutaway plan view of FIG. 5. In the figure, A...Panel body, _a1 ... Core body, _a2 ...
...metal plate, 1... cut and raised projection, 2... nut, 4... wide mounting plate, 5... locking hole, 6... screw rod for level adjustment.

Claims (1)

[Scope of utility model registration request] A metal plate is lined on the back side of a core body made of an inorganic material, and a large number of widely cut and raised protrusions are provided on the top surface of the metal plate and are bitten into the core body, and nuts for level adjustment screws are installed at the four corners. In the floor panel equipped with the above-mentioned floor panel, the nut is integrally molded on a wide mounting plate, and the mounting plate is placed on the four corner parts of the metal plate and combined with the metal plate and the core body by press molding, and the above-mentioned A floor panel characterized in that the placing plate is provided with a locking hole into which a protrusion on a metal plate is inserted and locked.