JPH04306353A - Free-access type floor panel - Google Patents

Abstract

PURPOSE:To make the mechanical working of notches through which cable or pipe is passed easier for a free-access type floor panel to be used in the clean room of electronic computer room or the manufacturing process of precise parts. CONSTITUTION:A free-access type floor panel consists of a framework 19 19 and a surface panel 20 separated from the frame 19. The framework 19 is obtained by integrally molding a rectangular outer frame 21 and intermediate frames 22 crossing vertically and horizontally in the frame 21. The surface panel 20 has almost the same size as the outer frame 21 of the framework 19, having grooves 23 crossing vertically and horizontally in the intermediate frames 22 of the framework 19. The surface panel 20 is lapped on the framework 19 and fixed to the base seat on the upper end of the struts.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to floor panels for free access floors used in clean rooms such as precision parts manufacturing factories and computer rooms.

0002

2. Description of the Related Art FIG. 5 is a plan view and a side view showing a free access floor structure. 1 is a floor panel of a free-access floor, which is raised on a slab 3 by supports 2. Then, a cable 4 is installed in the space between the slab 3 and the floor panel 1.
, piping 5, etc. are arranged.

[0003] Posts 2 are arranged under the four corners of each floor panel 1, and the corners of the four floor panels 1 are placed on one post. Each floor panel 1 is fixed to a pedestal 7 at the upper end of the column with bolts 6.

FIG. 6 is an enlarged sectional view taken along line A-A in FIG. Corners of adjacent floor panels 1, 1 are mounted and supported on a pedestal 7 at the upper end of the support column 2. Then, insert the bolts 6 into the through holes in the corners of the fixing plate 10, the pedestal 7, and the floor panel 1, which are attached to the middle of the support column 2.
It is tightened and fixed in the female screw hole of 0. In addition, pillar 2
By adjusting the middle nuts 12 and 13, the height of the pedestal 7 of the support column 2, the direction of the fixing plate 10, etc. can be freely set.

[0005] In such a raised floor,
To connect the cable 4 or piping to the device 8 on the floor panel 1, insert a U-shaped cutout 14 from one side of the floor panel 1 as shown in Figure 5 to create a hole for the cable or piping to pass through. is formed. As shown by the chain line, if a hole 14a is made outside the outer edge of the floor panel 1 and a cable or the like is inserted through it, the floor panel cannot be removed. I cut it out and put a notch in it.

FIG. 7 is a diagram showing details of a single conventional floor panel, in which (a) is a view showing the back side of the floor panel, and (b) is a sectional view taken along line bb in FIG. 7 (a). A conventional floor panel has a structure in which a large number of ribs 16 that intersect vertically and horizontally are integrally molded on the back side of a surface plate portion 15. A decorative board 17 on the surface of the surface board portion 15 is subjected to dustproof treatment.
is pasted.

[0007]

[Problems to be Solved by the Invention] By the way, in order to open a notch for passing cables, pipes, etc. in such an integrally molded floor panel, for example, the position shown by the chain line 18 is cut, but it is necessary to cut a large number of ribs. At the same time as cutting, the surface plate portion 15 must also be cut, making it difficult to form a notch.

[0008] In recent years, in factory construction, there has been a demand for shortening the construction period, but as mentioned above, machining of the cutouts in the floor panels is troublesome and has poor workability, which poses an obstacle to shortening the construction period.

A technical object of the present invention is to address such problems and to facilitate the processing of cutouts for passing cables, pipes, etc. in free access floor panels.

0010

FIG. 1 is a perspective view illustrating the basic principle of a free access floor panel according to the present invention. The free access floor panel of the present invention consists of a frame portion 19 and a surface plate 20, which are separated. The frame portion 19 is a perspective view seen from above, and the surface plate 20 is a perspective view seen from below.

The frame portion 19 includes a rectangular outer frame portion 21;
It consists of an inner frame part 22 which intersects vertically and horizontally within an outer frame part 21. The surface plate 20 has approximately the same size as the outer frame part 21, and has grooves 23 that intersect vertically and horizontally so as to correspond to each middle frame part 22 of the frame part 19. When assembling as a free access floor, the surface plate 2
0 is superimposed on the frame part 19 and fixed.

0012

[Function] In this way, the frame part 19 and the separate surface plate 20
In order to assemble a free access floor in a floor panel with In this state, it is fixed together with the frame part 19 to the pedestal of the support column with bolts.

In order to make a notch for passing cables, pipes, etc., cut the outer frame portion 21 at the broken line positions C1 and C2, remove the diagonal line portion 21a, and cut the surface plate 20 at C3.
, C4, and C5. in this way,
According to the present invention, the frame part 19 only needs to be cut at two places, C1 and C2, and the top plate 20 needs to be cut at three places, C3, C4, and C5, in the thin groove 23. Just do it. Moreover, since the frame portion 19 and the surface plate 20 can be cut separately, the cutting operation is simplified.

The number of cutting points is small in this way, the wall thickness of the cut portion is thin because the surface plate 20 cuts the bottom of the groove 23, and the frame portion 19 and the surface plate 20 can be cut separately. It has the advantage that the cut point is clear because it is cut along the curve, and there is no need for marking, etc. It is easy to process the notch, it can be processed quickly, and it can shorten the construction period in factory construction. Able to meet requests.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, examples will be used to explain how the free access floor panel according to the present invention is actually implemented. FIG. 2 is a plan view showing an embodiment of the frame portion. 21
is a rectangular outer frame portion, within which middle frame portions 22 are arranged vertically and horizontally at regular intervals, and these are integrally molded.

In this embodiment, two mutually parallel ribs 24 and 25 are integrally molded in the diagonal direction of the outer frame 21 between the four corners of the outer frame 21 and the middle frame 22. A fixing bolt is inserted into the slit 26 between the two ribs 24 and 25.

FIG. 3 is a diagram showing an embodiment of the surface plate, (a)
is a bottom view, and (b) is a cross-sectional view taken along line bb in figure (a). Grooves 23 that intersect vertically and horizontally are formed on the back surface of the top plate 20 in correspondence with the middle frame portion 22 of the frame portion 19 . Attachment holes 27 for fixing to the pedestal of the column are opened at the four corners of the surface plate 20.

In order to form cutouts for passing cables and pipes in this floor panel, the outer frame portion 21 of the frame portion 19 is cut at two points along broken lines C1 and C2, and the grooves in the surface plate 20 are cut. In 23, chain lines C3, C
4. Cut C5 at 3 places. Then, with the top plate 20 turned over and stacked on the frame part 19, the mounting hole 27
Then, a bolt is inserted into the slit 26 and fixed to the pedestal of the column.

Note that normally, the outer frame portion 21 of the frame portion 19
It is sufficient to cut it at two places, C1 and C2, and make a cutout in one square surrounded by the outer frame part 21 and the middle frame part 22. However, if a large cutout is required, for example, cut out along the broken line. The required outer frame part 21 and inner frame part 2 like C2, C6, C7
2 can be cut out and two or more squares can be used as cutouts. That is, a notch is formed in each square.

FIG. 4 is a diagram showing a state in which the floor panel of this embodiment is fixed on a support, in which (a) is a plan view and (b) is a sectional view taken along line xx in FIG. 4 (a). On the pedestal 7 at the upper end of the support column 2, the corner portions of the frame portions of four floor panels on the front, rear, left and right sides are placed. (b) is a sectional view of the attachment part of the front floor panel to the pedestal 7, where 20a is the surface plate of the left floor panel, and 21a is the outer frame of the left floor panel. In addition, 20b is the surface plate of the right floor panel, 2
1b is the outer frame portion of the right floor panel, and 20c is the surface plate of the rear floor panel.

(b) As shown in FIG.
, 25, the pedestal 7 and the fixing plate 10, and is tightened and fixed in the female threaded hole. In this way, the bolt insertion holes in the frame part are slits 26, so when floor panels are laid and fixed to the pedestal, the frame part can move freely in the direction of the slits relative to the bolts 6 in the slits 26. , easy to assemble.

Note that the surface plates 20, 20a, 20b, 20
A decorative board that has been treated with dustproofing is pasted on top of c.

[0023]

As described above, according to the present invention, a free access floor panel is made up of a frame portion 19 and a surface plate 20, and the frame portion 19 crosses the outer frame portion 21 vertically and horizontally inside the frame portion 21. On the back surface of the top plate 20, grooves 23 are formed that correspond to the middle frame portions 22 of the frame portion 19 and intersect vertically and horizontally.

As a result, when forming a notch for passing cables, piping, etc., the frame portion 19 and the surface plate 20 can be cut separately, and while the outer frame portion 21 is partially cut, the surface plate 20 can be cut. Since the cutting is performed in the groove 23, there are few places to cut and the wall thickness of the cut part is thin, so the cutting process is easy. Moreover, since the surface plate 20 is cut along the grooves 23, the cut points are clear and markings are unnecessary.
It can be processed quickly and efficiently, reducing construction times when assembling raised floors.

[Brief explanation of drawings]

FIG. 1 is a perspective view illustrating the basic principle of a free access floor panel according to the present invention.

FIG. 2 is a plan view showing an example of a frame portion.

FIG. 3 is a diagram showing an example of the surface plate, in which (a) is a bottom view, and (b) is a bb--b sectional view in figure (a).

FIG. 4 is a diagram showing a state in which the floor panel of the embodiment is fixed on a support, in which (a) is a plan view, and (b) is a cross-sectional view taken along line xx in figure (a).

FIG. 5 is a plan view and a side view showing a conventional free access floor structure.

FIG. 6 is a cross-sectional view of a conventional free access floor panel placed and fixed on a column.

7A and 7B are diagrams showing details of a conventional floor panel, in which (a) is a diagram showing the back side of the floor panel, and (b) is a cross-sectional view taken along line bb in diagram (a).

[Explanation of symbols]

1 Floor panel 2 Pillar 3 Slab 4 Cable 5 Piping 6 bolts 7 Pedestal 8　Device 10 Fixed plate 12,13 Nut 14, 14a Notch 15　Surface plate part 16 Ribs 17 Decorative board 19 Frame part 20　Surface plate 21 Outer frame part 22 Middle frame part 23 Groove 24, 25 ribs 26 slit 27 Mounting hole

Claims (1)

[Claims] Claim 1: A free access floor panel is composed of a frame part (19) and a surface plate (20) separate from the frame part (19), and the frame part (19) has a rectangular shape. The outer frame part (21) and the middle frame part (22) intersecting vertically and horizontally in the outer frame part (21) are integrally molded. (21), and has grooves (23) that intersect vertically and horizontally in correspondence with the middle frame part (22) of the frame part (19). A free access floor panel characterized in that it is configured to be attached and fixed to a pedestal at the upper end of a column while stacked on a frame part (19).