JP2778538B2 - Free access floor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a free access floor which is placed on a floor slab and is laid with a gap between the floor slab and the floor.

[0002]

2. Description of the Related Art In modern offices, free access floors are spread over floor slabs so that power cables and communication cables can be freely routed.
It has a double floor structure. Conventional free access floors have been provided with support legs erected at the four corners of a flat square floor plate, and the floor plates are arranged at equal intervals in the front-rear direction and the left-right direction. A rectangular groove plate is laid over the portion where the floor plate is adjacent, and both sides are supported by two sides of the floor plate, and a square groove plate is laid over the portion where the four floor plates are adjacent and the four corners are formed with four corners. It was designed to be supported at the corners of the floorboard and to accommodate various cables in the channel.

[0003]

In the above-mentioned conventional free access floor, since each groove plate is supported by an adjacent floor plate, the structure of the floor plate and the groove plate is completely different.
That is, although the configuration of the groove plate is simplified, the configuration of the floor plate is more complicated than that, and this has been a factor that causes an increase in cost as a whole. Accordingly, an object of the present invention is to provide a free access floor having a simple structure.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object.
A rib overhang is protruded on the side, and the rib overhang is bent downward so that the rib overhang becomes a rib,
A square floorboard having a planar shape square is formed, and a rib overhang is projected from four sides of a metal plate, and the rib overhang is bent downward so that the rib overhang becomes a rib, and the short side is bent. Form a rectangular floorboard of a flat rectangular shape having a length equal to one side of the square and a long side substantially equal to a multiple of one side of the square, arranging the square floorboard at the intersection of the wiring passages, and a square floorboard or A free access in which a rectangular floorboard is arranged, and a support leg having an insertion groove into which a rib of each floorboard is inserted on a top surface at a portion where corners of each floorboard gather, and each floorboard is supported by the upper surface of the support leg. On the floor.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings.
FIG. 1 shows an embodiment of the present invention. This free access floor comprises a square floor panel 1, a rectangular floor panel 2, and support legs 3 for supporting these floor panels 1 and 2. Square floorboard 1
Are formed in a planar square shape. The rectangular floorboard 2 has a flat rectangular shape, and its short side is square floorboard 1
, And the length of the long side is substantially twice the length of one side of the square floorboard 1. That is, these floorboards 1 and 2 are laid on the floor slab. In this embodiment, the adjacent floorboards are arranged with a slight gap therebetween. Therefore, the length of the long side of the rectangular floorboard is the square floorboard 1 The length is formed to be twice the length of one side plus the gap. Each floor plate 1, 2
Can be arranged without leaving a gap, and the length of the long side of the rectangular floor plate can be formed to be, for example, three times the length of one side of the square floor plate 1.

The square floorboard 1 is arranged at the intersection of the passages of the wiring 4, and the rectangular floorboard 2 is arranged in the wiring passage other than the intersection at a direction along the wiring passage. In the square part of the plane shape surrounded by these floor plates 1 and 2,
Two rectangular floorboards 2 are arranged. That is, the rectangular floorboard 2 is commonly used on the path of the wiring 4 and other than the wiring path. FIG. 1 shows a case where the two rectangular floorboards 2 arranged in places other than the wiring passage are all arranged horizontally, but they can be all arranged vertically, and the horizontal arrangement and the vertical arrangement can be mixed. It can also be done. As described above, in the present embodiment, the length of one side of the square floorboard 1 is set to 1
When the pitch is set, the wiring passages are provided with a middle pitch in both the front-rear direction and the left-right direction.

As shown in FIG. 2, the square floorboard 1 has rib overhangs 1a projecting from four sides of a metal plate, and the rib overhangs 1a become ribs 1b.
a is bent downward and can therefore be manufactured very easily. Similarly, as shown in FIG. 3, the rectangular floor plate 2 has rib overhangs 2a on four sides of the metal plate.
And the rib overhang 2a is bent downward so that the rib overhang 2a becomes the rib 2b. However, among the two long sides of the rectangular floor plate 2, a wiring takeout groove 2c is formed in the center of one long side, and the center of the other long side may be formed as a groove for taking out wiring by bending. A pair of possible slits 2d are formed.

The support leg 3 is formed in a closed cylindrical shape as shown in FIG. 4, has a cross-shaped groove on the upper surface, and has four spacers 3a at the center of the groove except for the crossing portion of the cross. Therefore, fitting grooves 3b are formed on both sides of each of the four spacers 3a. As shown in FIG. 1, the support legs have a portion where corners of four floor plates 1 and 2 gather, a corner portion of two rectangular floor plates 2 and 1
In addition to the arrangement of the centers of the two rectangular floorboards, the long sides of the rectangular floorboards 2 in this embodiment are also arranged at the center of the adjacent long sides of the adjacent parts. Therefore, the support legs 3 are arranged in front, rear, left and right at a pitch substantially equal to the length of one side of the square floor plate 1. However, in the border portion of the free access floor, as shown in FIG. 5, each support leg 3 is disposed slightly inside from its original position. In this case, the upper surface of the support leg 3 and each floor plate 1,
It is preferable that the lower surface of the second member be fixed with an adhesive or the like. Note that the spacer 3a of the support leg of the present embodiment is
As shown in (A), they are formed independently of each other,
As shown in FIG. 6, each of the spacers 3 is provided on the support legs 3 arranged at a portion where the corners of the four floor plates 1 and 2 gather.
a can be connected to form a cross-shaped spacer.

A rib 1 of each floor plate is provided in the fitting groove 3b of the support leg.
b and 2b are fitted, and therefore, at the corners of the floor plates 1 and 2, two ribs orthogonal to each other are fitted into the respective fitting grooves 3b, so that the floor plates 1 and 2 are positioned by the support legs 3. become. That is, the rib 1 of each floorboard
b and 2b have both the function of improving the strength of each floor plate 1 and 2 and the function of positioning each floor plate 1 and 2. However, the lower ends of the ribs 1b and 2b do not press the bottom surface of the fitting groove 3b as shown in FIG. That is, the ribs 1b, 2
b does not have a function of supporting the floor plates 1 and 2, and the floor plates 1 and 2 are supported by the upper surfaces of the support legs 3. In the support leg of this embodiment, the spacer 3a is provided to eliminate the abnormal noise caused by the contact of the adjacent ribs 1b and 2b. However, the spacer 3a may not be provided.

As described above, the wiring floor groove 2c is formed in the center of one long side of the rectangular floor plate 2, and the support leg 3 is disposed immediately below the wiring groove 2c. The depth of the wiring extraction groove 2c is formed sufficiently long as shown in FIG. 5, so that a part of the wiring extraction groove 2c is not hidden by the support leg 3. Therefore, the wiring 4 can be taken out from the gap as shown in FIG. When the wiring to be taken out has a considerably large diameter, the following is performed. That is, when trying to take out a wire having a larger diameter than the portion A in FIG. 5, the long sides of the two rectangular floor boards 2 are exchanged as shown in FIG. Is bent downward to provide a wiring outlet. However, when the diameter of the wiring is medium, only one rectangular floor plate 2 is replaced,
The slit 2d can also be bent. When a wire having a larger diameter is to be taken out from the portion B in FIG. 5, the direction of arrangement of the two rectangular floor plates 2 and 2 is made to be vertically long as shown in FIG. The portion of 2d is bent downward to form a wiring outlet. In these cases, the support legs 3 immediately below the slit 2d become obstructive, so that the support legs 3, 3 are arranged on both sides of the slit as shown in FIGS.

In the above embodiment, the case is shown in which the wiring passages are provided with a width of one pitch in the front-rear direction and in the left-right direction with a middle pitch of two pitches. The wiring path can be provided at an arbitrary pitch and an arbitrary width. FIG. 9 shows an example thereof. In this embodiment, the wiring paths are provided with a width of one pitch with three middle pitches left, right, front and rear. However, in the example shown in the figure, the wiring path can be used with a width of two pitches with a middle pitch of two pitches, so that it is possible to easily cope with an increase in the wiring capacity.

As described in detail above, according to the present embodiment,
An extremely flexible free access floor can be obtained by the three members of the square floor plate 1 and the rectangular floor plate 2 whose structures are extremely simple, and the support legs 3 which can be manufactured very easily with resin or the like. When the height of the floor is to be changed, only the support legs 3 need to be changed, and the flexibility is high in this aspect as well. Moreover, since the floor plates 1 and 2 are connected by the support legs 3 over the entire free access floor, there is no room for lateral displacement or the like, and a sense of stability is obtained in which the entire access floor is integrated. Further, since there is a space on the lower surface of the floor plate in a portion other than the wiring passage, the extra length of the wiring 4 can be stored.

Next, FIGS. 10 to 12 show another embodiment of the support leg. This support leg consists of a cap 5 and a pipe 6,
A buffer 7 is attached to the lower end of the pipe 6. The cap 5 is formed of a resin, and four spacers 5b are erected on a base plate 5a. Each spacer 5
A fan-shaped portion 5c is provided upright between b. Thus, a fitting groove 5d is formed between the spacer 5b and the fan-shaped portion 5c. The middle part of the side surface of each sector 5b is cut out,
The holding portion 5e is fixed in the notch. The front surface of the holding portion 5e protrudes toward the fitting groove 5d, and the holding portion 5e is connected to the side wall of the sector 5b at both lower ends. In this manner, the holding portion 5e can be elastically curved. Therefore, when the ribs 1b and 2b of the floor plates 1 and 2 are pressed into the fitting grooves 5d, the floor plates 1 and 2 and the cap 5
Are configured to be fixed. A cylindrical portion 5f is provided upright on the lower surface of the base plate 5a of the cap, and a cylindrical pipe 6 is press-fitted into the cylindrical portion 5f. On the other hand, as shown in FIGS. 13 and 14, the cushioning member 7 has a shape in which a cylindrical portion is erected on a base plate, and the lower end of the pipe 6 is fitted into the cylindrical portion. As shown in FIG. 15, the cushioning material 7 has nine convenient cushioning materials.
Are connected to each other by a connecting member 8 in the shape of a “ta”.

As described above, since the pipe 6 is used for the main body of the support leg in the present embodiment, the floor height can be freely changed by changing the length of the pipe 6.
The pipe 6 is not limited to a cylindrical shape, but may be a square pipe. In addition, since the resin cap 5 is interposed between the pipe 6 and the floor plates 1 and 2 and the cushioning material 7 is interposed between the pipe 6 and the floor slab, generation of abnormal noise due to walking or the like occurs. Can be suppressed. Also, since the cap 5 is provided with the holding portion 5e, the floor plates 1, 2
Is stabilized at the time of assembling. In this embodiment, the case where the floor plates 1 and 2 are fitted into the fitting groove 5d of the cap is shown. However, the frame and the slope can be fitted to simplify the structure. The cushioning material 7 is mainly a pipe 6
Are arranged only on the lower end surface of the floor slab, that is, since the contact area with the floor slab is small, it is easy to deal with unevenness of the floor slab. Further, since the floor plate and the support legs are unitized by the connecting member 8, the positioning of the floor plate becomes easy and the transportation is convenient. Further, since the supporting legs can be individualized by cutting the connecting member 8 and arranged on the lower surface of the floor plate at an arbitrary place, the reinforcement of the floor plate can be easily reinforced.

Next, FIG. 16 shows another embodiment of the square floor panel 9. As shown in the figure, on the upper surface of this square floor plate 9,
A cross-shaped wiring direction mark 9a is provided. Therefore, the wiring direction can be easily confirmed. A cut 9b is provided at one end of one side rib of the four side ribs of the floor panel 9. Therefore, when another square floor plate 9 is arranged so that the back surfaces thereof face each other, the two floor plates 9 and 9 are assembled by cutting both floor plates.
The volume at the time of transportation is reduced, and handling becomes easy. It should be noted that a similar cut can be provided in the rectangular floorboard.
It is sufficient if the cut 9b is provided at one end of one side of the rib, but for example, it can be provided at all ends of the four side of the rib. Even if it is formed in this way, the end of the floorboard is supported on the upper surface of the support leg, so that the strength does not decrease.

[0016]

According to the present invention, the square floorboard and the rectangular floorboard are formed in substantially the same manner except for the planar size, and the free access floor is formed only by these three floorboards and the support legs. Since it is configured, the free access floor has a very simple structure. Also, although both floorboards are easily formed by bending a metal plate, they have sufficient strength because they have ribs, and these ribs function to fit into the fitting grooves of the support legs to prevent displacement. . Further, by appropriately combining the two floor boards, it is possible to flexibly cope with a change in the position of the wiring passage.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view showing one embodiment of the present invention.

FIG. 2 is a plan view showing a ribbed portion of a square floorboard before bending.

FIG. 3 is a plan view showing the rib overhanging portion of the rectangular floorboard before bending.

FIGS. 4A and 4B are a plan view and a front view, respectively, showing support legs.

FIG. 5 is a plan view showing a mounting position of a support leg at a border portion and a method of extracting a thin wire;

FIG. 6 is a plan view showing another embodiment of the support leg.

FIG. 7 is a plan view showing a method of taking out a large-diameter wiring at a portion A in FIG. 5;

FIG. 8 is a plan view showing a method of extracting a large-diameter wiring at a portion B in FIG. 5;

FIG. 9 is a plan view showing a case where the pitch of the wiring path is changed.

FIG. 10 is a plan view showing a cap of another embodiment of the support leg.

11 is a sectional view taken along line AA in FIG.

FIG. 12 is a sectional view taken along line BB in FIG. 10;

FIG. 13 is a plan view showing a cushioning material of another embodiment of the support leg.

FIG. 14 is a longitudinal sectional view of the same.

FIG. 15 is a plan view showing a cushioning member and a connecting member of another embodiment of the support leg.

FIG. 16 is a plan view showing another embodiment of a square floorboard.

[Explanation of symbols]

1: Square floorboard 1a: Rib overhang 1
b ... rib 2 ... rectangular floorboard 2a ... rib overhang 2
b ... rib 2c ... wiring take-out groove 2d ... slit 3 ... support leg 3a ... spacer 3
b ... fitting groove 4 ... wiring 5 ... cap 5
a: Base plate 5b: Spacer 5c: Sector 5
d: fitting groove 5e: holding part 5f: cylindrical part 6
... pipe 7 ... cushioning material 8 ... connecting member 9
... square floor board 9a ... wiring direction mark 9b ... cut

Continuation of the front page (72) Inventor Akishi Okamoto 2-4-2 Toyo, Koto-ku, Tokyo Inside Hitachi Koki Co., Ltd. (56) References JP-A-59-15159 (JP, A) JP-A-6-322295 (JP, A) Hikaru Hira 3-43370 (JP, U) (58) Fields studied (Int. Cl. ⁶ , DB name) E04F 15/024 606 E04F 15/024 601 E04F 15/024 603 E04F 15 / 00 101 E04F 15/18

Claims (11)

(57) [Claims] 1. A rib overhang is protruded from four sides of a metal plate.
The rib overhanging portion is bent downward so that the rib overhanging portion becomes a rib to form a square floor plate having a planar square shape, and the rib overhanging portions are projected from four sides of the metal plate. The rib overhang is bent downward so that the overhang becomes a rib, and the short side is equal to one side of the square, and the long side is substantially equal to a multiple of one side of the square. Forming a floorboard, arranging the square floorboard at the intersection of the wiring passages, arranging the square floorboard or the rectangular floorboard in the remaining portion, and forming the ribs of each floorboard on the upper surface in a portion where the corners of each floorboard gather. A support leg having an insertion groove into which is inserted is arranged,
A free access floor in which each of the floor boards is supported by the upper surface of the support leg. 2. The free access floor according to claim 1, wherein said support legs are also arranged at an intermediate portion between the long sides of the rectangular floor boards adjacent to each other. 3. A pressing portion is provided in the fitting groove so as to press-fit the rib of the floor plate into the fitting groove so as to be fixed.
The free access floor according to claim 1 or 2. 4. The support leg has a cross-shaped groove on the upper surface, and a spacer protrudes at the center of the groove except for the crossing portion of the cross, so that the ribs of the adjacent floor plates are mutually connected. 4. The free access floor according to claim 1, wherein said fitting groove is formed so as not to abut. 5. The support leg has a cross-shaped groove on the upper surface, and a spacer protrudes from the center of the groove except for the crossing portion of the cross, so that the ribs of each of the adjacent floor plates are mutually connected. The fitting groove is formed so as not to abut, a cap having a pipe fitting portion formed on a lower surface thereof, and a pipe fitted into the pipe fitting portion of the cap, and a cushioning material is attached to a lower end of the pipe. Item 4. The free access floor according to item 1, 2 or 3. 6. The free access floor according to claim 5, wherein at least two adjacent cushioning members are connected. 7. The free access floor according to claim 1, wherein a wiring take-out groove is formed in a middle portion of a long side of said rectangular floor plate. 8. The free access floor according to claim 7, wherein said support leg is arranged at a portion where said wiring extraction groove is formed, and a depth of said wiring extraction groove is formed so long as not to be concealed by said support leg. 9. A pair of slits formed in a middle portion of a long side of said rectangular floor plate, which can be formed as a groove for taking out wiring by bending.
Free access floor as described in section. 10. The free access floor according to claim 1, wherein a cross-shaped wiring direction mark is provided on an upper surface of said square floor plate. 11. The free access floor according to claim 1, wherein a cut is provided at one end of at least one of the four side ribs of the square floor plate or the rectangular floor plate.