JP3391645B2 - Free Access 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 double-floor structure in which water supply / drainage pipes, cables for equipment, etc. are arranged under the floor, and in particular, a free-access floor in a clean room with high cleanliness used for semiconductor processing. Regarding the panel.

[0002]

2. Description of the Related Art Conventionally, as a free access floor panel used for a double floor structure such as an electronic computer room, a telephone exchange room, an information processing equipment room, etc., a melamine decorative board or a chloride board is formed on the upper surface of a floor panel body made of aluminum die casting. It is used with vinyl tiles attached. However, when considering the use in a clean room that requires higher cleanliness, the panel is corroded by dust generated by abrasion of the panel caused by movement of people and traveling of article transport vehicles, chemicals used, etc. There is a problem in that the cleanliness of the clean room is reduced due to the influence of the generated gas.

In order to solve the above problem, a stainless steel plate is attached to the top and side surfaces of a floor panel body made of aluminum die casting (Japanese Patent Publication No.
No. 23641), a floor panel body made of aluminum die cast and provided with a nickel-based plating layer (Japanese Utility Model Publication No. 6-23641).

[0004]

Although the above-mentioned improvement considerably reduces the cleanliness of the clean room, aluminum die cast floor panels and steel floor panels are made of ceramic materials such as calcium silicate board and GRC molded board. There is a problem that the walking feeling is worse than that of the floor panel.

On the other hand, the floor panel core plate material of the ceramic material which is excellent in walking feeling has an unavoidable weakness called brittleness, and the corners are easily chipped during handling during transportation or construction. Therefore, a core plate material made of a calcium silicate plate coated with a metal plate is known.

The free access floor panel having such a structure is made of a metal, which is formed into a box shape by a core plate material made of a calcium silicate plate, and a lower surface plate portion and a peripheral plate portion attached to the lower side of the core plate material. Lower box body, and a metal upper box body formed in a box shape by the upper plate part and the peripheral plate part that are attached to the upper side of the core plate material and can wrap the peripheral plate part of the lower box body from the outside. The upper and lower box bodies are formed to be slightly larger than the core plate material, and a step portion is formed on the side surface of the core plate material between the upper side and the lower side so that the upper box body is larger than the lower box body. It has been proposed that the mounting work is facilitated by avoiding the peripheral plate portions of the upper and lower boxes from interfering with each other when the upper box body is attached to the core plate material (actual open flat 6-6208).
No. 3).

However, the above-mentioned free access floor panel is used in a clean room because a gap is created between the peripheral plate portion of the lower box body and the peripheral plate portion of the upper box body when the upper box body is attached. In consideration of the above, deterioration of cleanliness due to dust caused by the core plate material which is a ceramic material becomes a problem. Also, the wear resistance and corrosion resistance of the metal plate used are not sufficient when considering use in a clean room.

An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a free access floor panel which has a good walking feeling, is suitable for use in a clean room, and is easy to manufacture.

[0009]

In order to achieve the above object, a free access floor panel according to the present invention is a kiln.
A core plate made of an industrial material, a metal lower box body formed into a box shape with a lower plate part and a peripheral plate part and attached to the lower part of the core plate part, and a box with an upper plate part and a peripheral plate part. molded into shape constituting a metallic upper casing depositing on top of the core plate so as to surround the entire circumference of the peripheral plate portion of the lower casing.

A step portion is provided on a side surface of the core plate member, and the upper portion of the core plate member that is loosely fit into the upper box body is larger than the lower portion of the core plate member that is loosely fit into the lower box body. A caulking material is filled in a gap generated between the peripheral plate portion of the lower box body and the peripheral plate portion of the upper box body when the both box bodies are attached to the core plate material . Wherein the box good to mold a stainless steel plate. Further, it is preferable that the stainless steel plate forming the upper box body is SUS430 and the lower box body is formed of a color steel plate.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a free access floor panel according to the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a free access floor panel 10 according to the present invention, one side of which is 450 mm to 600 mm.
Is shaped into a square.

FIG. 2 is a partial cross-sectional view taken along the line II-II shown in FIG. 1, in which a core plate material 11 made of a calcium silicate plate, a lower surface plate portion 14 and a peripheral plate portion 16 form a box. The lower box 18 made of a colored steel plate formed into a shape has an adhesive 19
An upper box body 24 made of a stainless steel plate formed into a box shape by the upper surface plate portion 20 and the peripheral plate portion 22 is attached by an adhesive 25.

Further, in the core plate member 11, a core plate member lower portion 26 into which the lower box body 18 can be loosely fitted is formed larger than a core plate member upper portion 28 into which the upper box body 24 can be loosely fitted, and a step portion 13 is formed on the side surface 12. Is provided. Therefore, when the upper box body 24 is attached to the upper part 28 of the core plate material, the peripheral plate portion 16 of the lower box body 18 and the upper box body 24 are attached.
The peripheral plate portion 22 does not interfere with each other, and the assembling work of the lower box body 18 and the upper box body 24 with respect to the core plate material 11 can be easily performed.

Further, caulking is provided in a gap 30 formed between the peripheral plate portion 16 of the lower box body 18 and the peripheral plate portion 22 of the upper box body 24, which occurs when the upper box body 24 is attached to the upper part 28 of the core plate material. The material 32 is filled. Therefore, the dimensional accuracy is required to be strict with respect to the vertical and horizontal dimensions and the squareness only in the upper box body 24 in which the adhesion with the adjacent members is important, and the core plate material 11 and the lower box body 1 are required.
Since a sufficient tolerance is recognized in the fitting with respect to 8, the processing of the core plate material 11 and the lower box body 18 is extremely easy, and strict dimensional control is unnecessary.

Such a free access floor panel 1
At 0, a part of the free access floor panel 10 is cut in order to process the boundary part 40 that joins with other equipment, or a notch 42 is processed in the free access floor panel 10 at the construction site for processing of piping and the like. In order to prevent a part of the core plate material 11 from being exposed to the surface, a closing plate 50 made of a stainless steel plate having a U-shaped cross section in which a caulking material 48 is applied to the inner surface 46 is formed. Fix with small screws 52 (see FIG. 3).

In FIG. 3, three closing plates 50 each having an inner surface 46 coated with a caulking material 48 are fixed to the core plate member 11 by machine screws 52, and caulking is performed on the joint portions 54 of the adjacent closing plates 50. The state in which the material 56 is filled is illustrated. When the lower box body 18 is formed of a color steel plate, processing is easier than at least that of a stainless steel plate.
The size and cutting work can be performed accurately and quickly.

[0017]

As described above, according to the free access floor panel of the present invention, since the ceramic material such as calcium silicate plate is used for the core plate, the aluminum die-cast panel is used for the panel body. It can be used as a free-access floor panel for clean rooms, which gives a more comfortable walking feeling than other things.

Further, since the caulking material is filled in the gap between the peripheral plate portion of the lower box body and the peripheral plate portion of the upper box body, which occurs when the upper box body is adhered to the core plate material, the metal parts are separated from each other. The number of contact points of the is reduced, and the propagation of vibrations is better alleviated and the sound insulation is improved.

In addition, the dimensional accuracy of the panel is restricted only by the upper box body, and strict dimensional accuracy is not required for the core plate material and the lower box body, which facilitates the processing, and the upper and lower box bodies are bonded to the core plate material. In doing so, even if a slight displacement occurs, it does not hinder the wrapping of the core plate material, the assembly can be performed quickly, and the productivity is improved, so that the cost can be reduced.

Moreover, the core plate material can be easily sealed by the caulking material, and the influence of dust that may be generated from the core plate material can be reliably prevented. Moreover, since the lower box body is made of a colored steel plate, surface treatment such as chromate treatment or plating after processing and assembling becomes unnecessary.

Further, by forming the upper box body from a stainless steel plate (SUS430) having excellent wear resistance and corrosion resistance, generation of abrasion dust and gas generation due to unexpected reaction with chemicals are suppressed as much as possible. In addition, it is possible to exert a function excellent in fire resistance and heat resistance as a fireproof section in cooperation with a calcium silicate plate.

[Brief description of drawings]

FIG. 1 is a plan view of a free access floor panel according to the present invention.

FIG. 2 is a partial sectional view taken along line II-II in FIG.

FIG. 3 is an illustration of a notch construction for adapting the free access floor panel according to the present invention to other equipment,
(A) is a top view, (b) is sectional drawing shown along the BB line of (a).

[Explanation of symbols]

10 Free access floor panel 11 core plate material 12 Sides (core plate material) 13 Step (core plate material) 14 Bottom plate (lower box) 16 Surrounding plate (lower box) 18 Lower box 19,25 adhesive 20 Top plate 22 Peripheral plate (upper box) 24 Upper box 26 Lower part of core plate (lower box) 28 Upper part of core plate (upper box) 30 gap 32,48,56 caulking material

Front page continuation (72) Inventor Sadao Kobayashi 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Taisei Corporation (72) Inventor Tsutomu Kobayashi 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Inventor Ryuta Futaki 1-2-1 Shibadaimon, Minato-ku, Tokyo Nichiasu Co., Ltd. (72) Inventor Masahiko Tsuneya 1-2-1 Shibadaimon, Minato-ku, Tokyo Nichiasu Stock In-house (72) Inventor Osamu Torigaga Osamu 1-26-26 Shibadaimon, Minato-ku, Tokyo Nichiasu Co., Ltd. (56) Reference JP-A-3-55356 (JP, A) Actual Kaihei 6-62083 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E04F 15 / 02,15 / 024

Claims (3)

(57) [Claims] 1. A a core plate made of a ceramic material, a metallic lower box body is formed into a box shape with a lower face plate portion and the peripheral plate portion deposited in the lower part of the core plate, top plate portion and the surrounding A free access floor panel for a clean room, which is formed in a box shape with a plate part and is composed of an upper metal box body that is attached to the upper part of the core plate material so as to surround the entire circumference of the peripheral plate part of the lower box body. And a step portion is provided on a side surface of the core plate member, and the upper part of the core plate member that is loosely fit into the upper box body is configured to be larger than the lower part of the core plate member that is loosely fit into the lower box body. do it,
A free access floor characterized in that a caulking material is filled in a gap generated between a peripheral plate portion of the lower box body and a peripheral plate portion of the upper box body when the both box bodies are adhered to the core plate material. panel. 2. A free access floor panel according to claim 1, wherein there <br/> stainless steel plate forming the on the box. 3. The free access floor panel according to claim 1, wherein the lower box body is formed of a color steel plate.