JP2603208Y2 - Access floor panel - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application field] The present invention provides a communication cable under the floor,
The present invention relates to an improvement in an access floor panel used for a floor structure having a space in which a wiring such as a power line can be formed, that is, a so-called access floor.

[0002]

2. Description of the Related Art As an access floor panel constituting the above floor structure, there is known a structure in which a steel plate is bonded to upper and lower surfaces of a core material made of an inorganic material such as a calcium silicate plate. Floor panels with such a structure combine the properties of core material with excellent heat insulation and walking sensation, and the properties of steel sheet with excellent impact resistance, but from the handling of transportation and other aspects, It is desirable that the side surface of the core material be covered with a steel plate.

As an example of a structure in which the side surface of a core material is covered with a steel plate, Japanese Utility Model Publication No. Sho 60-29568 discloses a structure in which a side plate 1 having a U-shaped cross section is bonded to a core material 2 as shown in FIG. Board 3
And a structure in which the lower plate 4 is spot-welded. Also, Japanese Patent Application Laid-Open No. 63-206558 discloses FIG.
As shown in FIG. 1, there is disclosed a structure in which upper and lower plates 6, 7 superimposed on a core material 5 are clamped or caulked to form a joint portion 8.

[0004]

[Problems to be solved by the invention] However, as in the former case, the side plate 1 different from the upper and lower plates 3 and 4 is used.
When the upper and lower plates 3 and 4 are bonded to the core material 2 using an adhesive, it is difficult to displace the position until the adhesive is hardened, and it is difficult to bond the side plates if the accuracy of the thickness of the core material is poor. To be
There is a problem that spot marks are left when the side plate and the upper and lower plates are spot-welded. On the other hand, as in the latter case, the upper and lower plates 6 and 7 are clamped or caulked to form a joint portion 8.
Although the upper and lower plates 6 and 7 are firmly connected to each other, the manufacturing process becomes complicated.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a structure in which the entire surface including the upper and lower surfaces and side surfaces of a core material can be covered with a metal plate material such as a steel plate very easily. Its main purpose is to provide access floor panels.

[0006]

According to the present invention, there is provided a metal lower box body which is formed into a box shape by a core material, a lower surface plate portion and a peripheral surface plate portion by drawing, so as to wrap the core material. By drawing, the upper plate portion and the peripheral plate portion extending vertically downward from the side portion of the upper plate portion are formed into a box shape so that the core material can be wrapped around the peripheral plate portion of the lower box body. An access floor panel comprising a metal upper box body and a lower plate part of the lower box body and an upper plate part of the upper box body adhered to a lower surface and an upper surface of a core material, respectively. The material is formed into a shape having a step near the upper end of the peripheral surface, and the peripheral plate extending vertically downward from the side of the upper plate of the upper box due to the step hits the peripheral plate of the lower box. The gist is that it has been set to a position that does not exist.

[0007]

According to the above construction, the lower and upper metal bodies are wrapped in the core material so that the upper and lower surfaces and the four sides of the core material are covered, and the core material and the two boxes are bonded. Fixed. Also, the work of assembling the metal upper and lower boxes to the core material becomes easy. Also, the dimensional accuracy of the panel can be regulated by the metal upper box. Further, when the upper box body is put on the core material, the peripheral plate portion can be configured not to hit the peripheral plate portion of the lower box body.

[0008]

1 and 2 show an embodiment of the present invention. In the figure, reference numeral 10 denotes a core member made of a calcium silicate plate having a side of 450 mm to 600 mm and a thickness of 15 mm to 30 mm, and a step is formed near the upper end of the peripheral surface of the core member.

Reference numeral 12 denotes a lower box body formed by drawing a metal plate and forming it into a box shape, and a lower plate portion 12a abutting on the lower surface of the core material.
And a peripheral plate portion 1 wrapping around the four sides including the peripheral step portion of the core material
2b. Reference numeral 13 denotes an upper box body which is formed by drawing a metal plate into a box shape. The upper box body 13a is brought into contact with the upper surface of the core member. And a peripheral plate 13b wrapped from the outside of the upper box 10 and extends vertically downward from the side of the upper plate 13a of the upper box body 10 due to a step formed near the upper end of the peripheral surface of the core material. The peripheral plate 13b is defined at a position that does not contact the peripheral plate 12b of the lower box body 12. Both boxes 1
Although a steel plate having a thickness of 0.25 to 0.8 mm may be used for the layers 2 and 13, when the cost and the workability are taken into consideration, the steel sheet having a thickness of 0.1 to 0.8 mm is used.
Those having a thickness of 25 to 0.5 mm are desirable.

The lower box body 12 has a lower plate portion 12a bonded to the lower surface of the core member 10 with an adhesive 14, and
3 indicates that the upper surface plate portion 13a has an upper surface of the core material 10 and the adhesive 1
The four side surfaces of the core member 10 are double-wrapped by the peripheral surface plate portions 12b and 13b.

In the above embodiment, since the lower box body 12 is formed slightly larger than the core member 10, the assembling work to the core member becomes easy. Further, in this case, even if a slight displacement occurs when the lower box body is bonded to the core material, no inconvenience is caused thereby.

In the illustrated example, the end of the peripheral plate 13b of the upper box 13 is bent inward to provide a bent portion 13c. The bent portion 13c is not necessarily provided, but is preferably provided in order to ensure safety in panel handling work when laying or opening and closing the panel. Further, if the bent portion 13c is made to abut on the peripheral plate portion 12b of the lower box body 12 along the side surface of the core member, if there is a poor adhesion to the core member of the upper and lower box members, The effect of preventing peeling from the material is obtained.

[0013]

According to the present invention, according to the present invention, in an access floor panel constructed by wrapping a core material in a metal lower box body and an upper box body formed by drawing, the core material is located near the upper end of the circular surface. When the upper box is covered with the core material by the step, the peripheral plate extending vertically downward from the side of the upper box does not hit the peripheral plate of the lower box. It can be configured.

[Brief description of the drawings]

FIG. 1 is a perspective view of an access floor panel according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a part of the panel.

FIG. 3 is a sectional view of a conventional panel.

FIG. 4 is a sectional view of another conventional panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Core material 12 Lower box 12a Lower plate 12b Peripheral plate 13 Upper box 13a Upper plate 13b Peripheral plate 13c Bent

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeru Nakagawa 6-5-18-103 Chuo, Yamato-shi, Kanagawa (72) Inventor Takashi Yamanaka 2-21-10-201 Ikebukuro, Toshima-ku, Tokyo (72) Inventor Isamu Ogasawara 1-27-12 Ashina, Yokosuka City, Kanagawa Prefecture (56) References Japanese Utility Model Application Hei 2-79740 (JP, U) Japanese Utility Model Application Showa 64-7640 (JP, U) (58) Fields surveyed (Int. ⁷ , DB name) E04F 15/024 601

Claims (1)

(57) [Scope of request for utility model registration] 1. A metal lower box body formed into a box shape with a core material, a lower surface plate portion and a peripheral surface plate portion by drawing so as to wrap the core material, and an upper surface plate portion by drawing. A metal upper box formed into a box shape with a peripheral plate extending vertically downward from the side of the upper plate and formed so as to wrap a core material outside the peripheral plate of the lower box; An access floor panel comprising a lower plate and an upper plate of the upper box bonded to a lower surface and an upper surface of a core, respectively. The peripheral plate extending vertically downward from the side of the upper plate of the upper box is fixed to a position where the peripheral plate does not contact the peripheral plate of the lower box. And access floor panels.