JPH0518428Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a floor panel for a double floor structure that forms the floor surface (floating floor) of a room where OA equipment etc. are installed.
Specifically, the present invention relates to a floor panel for a double floor, which is formed by combining a panel body made of a desired molding material on a metal plate having interspersed biting protrusions on the upper surface with the metal plate.

(Prior art) Conventionally, this type of floor panel for double floors has been prepared by coating a metal plate with a desired inorganic material on a metal plate having a biting protrusion on the upper surface and having through holes for inserting support legs at the four corners. It is known that a panel body is formed by filling and curing a material, and at the same time, a support leg guide member (insert member) installed in advance on the through hole is integrated with the panel body (Japanese Patent Application Laid-Open No. Publication No. 60-43567).

A stepped portion is formed on the inner periphery of the guide member to engage with the upper end of the support leg inserted into the through hole, so that the four corners of the panel body are mounted on the upper end of the support leg.
It is designed to support floor panels on the foundation floor.

(Problem to be Solved by the Invention) However, according to the above-mentioned conventional floor panel, since the guide member that engages with the upper end of the support legs is provided in the panel body, the panel If the main body curves downward, the guide member will be pushed up by the support legs, and as a result, stress will be applied in the direction of separating the panel main body from the metal plate, which may reduce the durability of the floor panel. It was hot.

The present invention was developed in view of the above-mentioned conventional circumstances, and its purpose is to solve the problem when using a floating floor in a double-floor floor panel made by combining a panel body on a metal plate as described above. The relationship between the panel body, which curves due to such a load, and the supporting leg guide member, which is pushed up by the curve, is minimized to eliminate the possibility of stress acting in the direction of peeling the panel body from the metal plate. At the same time, the purpose is to prevent the possibility of a problem in which the fixing force of the guide member decreases.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the floor panel of the present invention has biting protrusions scattered on the upper surface and holes for inserting height adjustment bolts at the four corners. The panel body consists of a perforated metal plate, a molding material placed on the metal plate and composited with the metal plate by press molding, and a guide nut that communicates with the through hole of the metal plate, and the guide nut The lower flange provided in advance on the outer periphery and the upper flange formed by caulking the upper end of the guide nut to be inserted into the through hole sandwich the hole opening edge of the metal plate, and the guide nut is inserted into the hole. is fixed by caulking in a protruding manner on the back side of the metal plate.

(Function) According to the above configuration, the metal plate is held between the upper and lower flanges provided on the outer periphery of the upper end of the guide nut, and the metal plate and the guide nut are integrated with each other with the guide nut protruding from the back surface of the metal plate. Because I will make it into a guide, Natsuto,
Only the upper edge surface of the upper flange is in contact with the panel body which is integrally formed on the upper surface of the metal plate. Therefore, even if the panel body curves downward when using a floating floor and the guide nut is pushed up by the support leg,
Most of the stress acts to push up the metal plate, and the stress on the panel body becomes extremely small, so that no stress acts in a direction that would cause the panel body to separate from the metal plate.

Furthermore, since the guide nut is firmly integrated with the metal plate through the upper and lower flanges, compared to methods such as gluing the guide nut to the lower surface of the metal plate to obtain the same effect as described above, the guide nut is There is no risk that the adhesion force will decrease.

(Example) Next, an example of the floor panel for a double floor according to the present invention will be described based on the drawings.

As shown in Fig. 1, the floor panel A consists of a metal plate _A2 having a large number of biting protrusions _A2-1 , mortar, and GR.
A panel body A ₁ formed from a press molding material A ₁ ′ containing inorganic materials such as C and other materials, and a metal plate.
A ₂ is pre-equipped with a guide nut 2.

The metal plate _a2 has biting protrusions _a2-1 formed by press forming or punching formed in a scattered manner on the upper surface, and guide nuts 2 are inserted into through holes _a2-2 bored at the four corners of the metal plate a2. Caulk and attach.

As shown in the figure, the biting protrusion _a2-1 is a cut-and-raised piece that is cut and raised in a shape such that one half and the other half are back to back with respect to the center, and the panel body _a1 is pressed. It bites into the panel body _A1 during molding, and serves to strengthen the bonding force between the panel body _A1 and the metal plate _A2 .

The guide nut 2 is formed into a cylindrical shape that can be inserted into the through hole _a2-2 , and has flanges on the outer periphery of the upper end of the upper side 21 and the lower side 22 that sandwich the mouth edge of the through hole _a2-2 , Due to the clamping force of these flanges 21 and 22, the metal plate
a _2Protrudes from the back and is fixed.

To explain in detail the installation of the guide nut 2,
Only the lower flange 22 is formed on the outer periphery of the guide nut 2 in advance, and the upper end of the guide nut 2 is inserted through the hole a ₂ -2 so that the flange 22 comes into contact with the back surface of the metal plate a ₂ .
After inserting it into the holder, the upper end part is caulked by means such as press molding to form the upper flange part 21,
This allows the opening edge of the through hole a ₂ -2 to be connected to the respective flanges 21 and 2.
The guide nut 2 is firmly fixed to the metal plate _a2 by being held between the two.

Furthermore _, if the procedure for forming _the panel main body _a1 is explained with reference to FIG.
A solidified press molding material a ₁ ′ is placed on a ₂ , and the press molding material a ₁ ′ is pressed with an upper press mold b ₂ and a lower mold b ₁ to form a composite with the metal plate a ₂ . A panel body _A1 is integrally formed on the upper surface of a metal plate _A2 .

In addition, when forming this panel body _a1 , a bolt 3 with only a threaded shaft is inserted in advance into the threaded hole 2' of the guide nut ₂ attached to the metal plate a2, and
A pin 5 that comes into contact with the upper edge surface of the guide nut ₂ , that is, the upper edge surface of the upper flange 21 when the mold is clamped, is protruded from the molding surface b ₂ -1 of the upper mold b 2 for press, thereby removing the mold. Needless to say, the through hole 4 communicating with the through hole a ₂ -2 of the metal plate a ₂ is automatically opened in the panel body a ₁ at this time.

The floor panel A of this embodiment having the above configuration is supported on the foundation floor F by the height adjustment bolt 1 inserted and screwed into the guide nut 2 from the lower end side, and Panel A... Build a floating floor U by mutually. Furthermore, by inserting a tool such as a screwdriver into the through hole 4 and operating the height adjustment bolt one turn, the height adjustment bolt 1 is moved up and down, thereby adjusting the level of the floor panel A. This is done from the top side.

Incidentally, in this embodiment, the screw hole 2' of the guide nut 2 and the threaded part of the height adjustment bolt 1 are provided with
It is filled with an adhesive 6 of 20 to 60 Kgcm which prevents the height adjustment bolt 1 from loosening and exerts a bonding force to the extent that the height adjustment bolt 1 can be forcibly rotated with a tool such as a screwdriver. In this case, there is no need for a locking nut to be set under the guide nut 2, and there is an advantage that leveling can be performed without having to operate the locking nut.

(Effect of the invention) Since the floor panel for a double floor according to the invention is constructed as explained above, the panel main body is bent downward due to the load applied when the floating floor is used, and at this time,
Even if the guide nuts are pushed up by the support legs, stress that would cause the panel body to separate from the metal plate is eliminated, and the adhesion force of the guide nuts is maintained at the same level as conventional floor panels. can.

Therefore, in order to increase the durability of the floor panel, it is possible to eliminate the unreasonableness that would reduce the durability of the floor panel, in which the panel body is composited on a metal plate with a biting protrusion. We were able to provide a double-layer floor panel with excellent long-term durability.

[Brief explanation of the drawing]

The drawings show an embodiment of the double floor panel according to the present invention, with FIG. 1 being a longitudinal sectional front view of the main parts showing the state of use, and FIG. 2 being a sectional view of the main parts showing the forming process. In the figure, A...floor panel, _a1 ...panel body, a1 _' ...press molding material, _a2 ...metal plate, _a2
-1... Biting protrusion, a ₂ -2... Through hole, 1... Height adjustment bolt, 2... Guide nut, 21... Upper flange, 22... Lower flange.

Claims (1)

[Scope of utility model registration request] A metal plate with biting protrusions scattered on the top surface and holes for inserting height adjustment bolts in the four corners, and a molding material placed on the metal plate are combined with the metal plate by press molding. It consists of a panel main body made of a molded material and a guide nut communicating with the through hole of the metal plate, and the lower flange portion provided in advance on the outer periphery of the guide nut and the upper end of the guide nut inserted into the through hole are caulked. A floor panel for a double floor, characterized in that a guide nut is caulked and fixed in a protruding manner to the back surface of a metal plate by sandwiching the edge of a through hole of a metal plate with an upper flange formed by molding the metal plate.