JPH0436228B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a fixing device for a raised floor, which is constructed by arranging a plurality of floor panels each having support legs adjacent to each other on a reference floor surface. .

(Conventional technology) A double floor in which a number of floor panels are laid above a standard bottom surface such as a concrete floor, and a free space is secured between the floor panels and the standard floor surface in which cables, ventilation ducts, etc. can be placed. BACKGROUND OF THE INVENTION Structures, or raised floors, are becoming widely used.

Since such a raised floor is composed of a large number of individually independent floor panels,
Positioning and fixing each floor panel at a predetermined location on the reference floor surface is necessary to prevent the floor panels from shifting or wobbling, and to provide a flat floor surface.

Therefore, conventionally, when constructing a raised floor by laying a floor panel with support legs, a connector that engages with the support leg is fixed at a predetermined position on a reference floor surface, and a By engaging the supporting legs of the floor panel, the floor panel is positioned and fixed.
(See No. 75833).

(Problem to be solved by the invention) However, since a height adjustment mechanism such as a screw mechanism is usually installed between the support leg and the floor panel, there is inevitably a gap between these members. A rattling occurs. Therefore, in the above-mentioned conventional fixing device, a lock nut is used to firmly connect the support leg and the floor panel in order to prevent this rattling.

However, fixing the support legs of a raised floor with lock nuts not only greatly reduces the ease of constructing the floor, but also makes it extremely difficult to finely adjust the height of the floor panel after the floor is constructed. The same applies to the case of fixing using adhesive.

In addition, in the conventional fixing device described above, the fixing force of the floor panel is obtained from the fitting structure between the concave or convex portion of the connector and the support leg, so it is fixed in the horizontal direction, but it is not fixed in the vertical direction. Not done. Therefore, when a large eccentric load is applied to the floor panel, the corners of the floor panel lift up.

Furthermore, since the engagement position of the support leg with the connector is accurately regulated by the recess or protrusion that fits into the lower part of the support leg, the recess or protrusion formed on the connector and the support leg can be easily regulated during floor construction. It is difficult to engage the

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a raised floor fixing device that can reliably position and reliably fix a floor panel and has excellent ease of constructing a raised floor.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the free access floor fixing device of the present invention provides a free access floor fixing device in which a plurality of floor panels each having support legs are arranged adjacently on a reference floor surface. A device for fixing an access floor, which includes a receiving member fixed to a reference floor surface below the location where the corners of two or more adjacent floor panels meet, and a height adjustment mechanism at the corner of the floor panel. a support leg that is attached through the support member and placed on the receiving member; a holding member that engages from above the floor panel with a corner of the floor panel gathered above the receiving member; and a holding member that receives the holding member. It is characterized in that it has a fastening device that is detachably connected to the fastening device.

(Function) When constructing a raised floor, first, a receiving member is fixed at a predetermined position on a reference floor surface using adhesive, anchors, or the like. The predetermined position referred to here refers to a position below the position where the corners of two or more adjacent floor panels converge. After fixing the receiving member,
A plurality of floor panels each having support legs are placed adjacent to each other on a reference floor surface. At this time, each support leg attached to a corner of the floor panel via a height adjustment mechanism is attached to a corresponding receiving member. placed on top. Next, a presser member is engaged from above with the corner of the floor panel where the money is collected above the receiving member, and this presser member is removably connected to the receiving member by a fastening device. The presser member presses the corners of the floor panel downward to prevent it from lifting up, and also presses the support legs attached to the corners of the floor panel via a height adjustment mechanism in the vertical direction to adjust the height. Prevents rattling caused by interposition of the adjustment mechanism.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

1 to 6 show a first embodiment of the present invention, and FIGS. 7 and 8 show a sectional view and a bottom view of a floor panel used to explain this embodiment. The free access floor 1 is constructed by laying a plurality of floor panels 2, 2, 2, ... on a standard floor surface 3 such as a concrete floor.
is fixed at a predetermined position on the reference floor surface 3 before laying the floor panel 2. The receiving member 4 is disposed below a position where four corner portions 2a of four adjacent floor panels are assembled, and the receiving member 5 is disposed below a position where four corner portions 2a of two adjacent floor panels are assembled. It is placed below the location where the two come together (see Figure 1).

The receiving member 4 has a circular shape as a whole, and has an annular supporting leg mounting surface 6 concentrically extending on its upper surface.
is formed. The reason why the receiving member 4 is circular is to eliminate the directionality of attachment and to facilitate positioning and fixing to the reference floor surface 3. A support leg locking wall 7 extends in an annular shape on the outer edge of the support leg placement surface 6.
An annular tapered surface 8 is formed on the upper inner surface of the support leg locking wall 7 . A boss portion 10 having a through hole 9 is formed in the center of the receiving member 4, and a plurality of reinforcing ribs 11 extend radially from the boss portion 10. Note that 12 indicates an adhesive inflow hole for fixing the receiving member 4 to the reference floor surface 3;
are fixed with adhesive 13, as shown in FIG. However, the receiving member 4 can also be fixed to the reference floor surface 3 using other fixing means such as an anchor (not shown).

Through hole 9 formed in boss portion 10 of receiving member 4
The nut holder 14 is inserted from below, and the shoulder portion 14a of the nut holder 14 engages with the stepped portion 9a of the through hole 9 to prevent it from coming off. A nut 15 is fixed inside the nut holder 14, and the nut 1
A bolt 16 can be screwed into the hole 5. This nut holder 14 and bolt 16 constitute a fastening device.

Reference numeral 17 denotes a circular holding member, in which a hole 17a for inserting the bolt 16 is formed in the center, and an annular stepped portion 17b is formed in the lower surface thereof.

On the other hand, the receiving member 5 used on the wall side has a semicircular shape as a whole, but its basic configuration is exactly the same as the receiving member 4. That is, Fig. 5,
In FIG. 6, 6 is a support leg mounting surface, 7 is a support leg locking wall, 8 is a tapered surface, 9 is a through hole, 10 is a boss portion,
Reference numeral 11 indicates a reinforcing rib, and 12 indicates an adhesive inflow hole. In addition, the configuration of the fastening device is also the same,
In FIG. 5, 14 is a nut holder, 15 is a nut, and 16 is a bolt. The holding member 18 used together with the receiving member 5 also has the same basic structure as the holding member 17 except that it has a semicircular shape as a whole. That is, in FIG. 5, 18a is a hole through which the bolt 16 is inserted, and 18b is a semi-annular step.

It should be noted that normally there is no need to place the receiving member or holding member of the present invention in the corner of the room indicated by 19 in FIG. The receiving member (not shown) and the quadrant-shaped pressing member may be connected using the aforementioned fastening device.

As shown in FIGS. 7 and 8, the floor panel 2 is constructed by joining an upper surface plate 21 made of steel plate and a lower surface plate 22 made of steel plate by spot welding or the like.
The space between them is filled with an inorganic filler 23. The floor panel 2 also has a square shape as a whole, and each corner 2a, 2a, . is formed. Then, each corner 2a, 2a, . . . of the floor panel 2
A support leg 25 is attached to the support leg 25 via a height adjustment mechanism 24. The height adjustment mechanism 24 includes an inner sleeve 24b having a threaded portion 24a formed on its inner circumferential surface, and a threaded portion 25 formed on the circumferential surface of a support leg 25 so as to be screwed into the threaded portion 24a of the inner sleeve 24b.
It consists of a. The inner sleeve 24b is press-fitted into the outer sleeve 26 fixed to the floor panel 2,
Since it is locked in a non-rotatable manner, the height of the floor panel 2 from the reference floor surface 3 can be freely adjusted by rotating the support legs 25. Note that the mounting structure of the support leg is not limited to the above-mentioned one, and for example, the mounting structure of the support leg is not limited to the one described above.
The support legs 25 may be directly screwed onto the floor panel 2.

In FIG. 8, 27 is a reinforcing rib formed on the lower plate 22 by press drawing.

Now, the method of fixing the floor panel 2 will be explained based on FIG. 2. First, the receiving member 4 into which the nut holder 14 is fitted is fixed at a predetermined position on the reference floor surface 3 with an adhesive 13 or the like. Next, the floor panels 2, 2, . The presser member 17 is engaged with the stepped portion 2b of the shape. And the presser member 17
is fastened to the nut holder 14 with the bolts 16, the floor panel 2 is positioned, and its corners 2b are pressed downward, and as a result, the height adjustment mechanism 24 is pressed in the vertical direction, and the height adjustment mechanism 24
This prevents rattling caused by the interposition. Since the support leg 25 is fixed in a crimped state, it is prevented from rotating, so the same effect as a lock bolt or the like can be achieved with good workability, and the adjusted height can be kept constant. The receiving member 5 shown in FIG. 5 also has a similar fixing effect.

FIG. 9 shows a mode of use of the present invention when the height of the floor panel 2 from the reference floor surface 3 is increased in the first embodiment, and the nut holder 14 of FIG. 4 is replaced with a backrest. high nut holder 1
4' can be used. This is an effect of the nut holder 14, 14' being configured to be detachable from the receiving member 4.

It should be noted that the nut holders 14, 14' and the receiving member 4 may be integrally formed.

FIGS. 10 to 12 show other embodiments of the receiving member and nut holder of the present invention, and this embodiment is characterized by the combination of each type of receiving member 28 and nut holder 29. It is possible to achieve the same function as the combination of the two types of receiving members 4 and 5 and one type of nut holder 14 described above. That is, a long hole 30 having a stepped portion 30a is formed in the boss portion 10 of the receiving member 28, and the nut holder 29 having the nut holding portion 29a at an eccentric position is placed in the long hole 30 at the A position with a phase shift of 180 degrees. and can be inserted at position B. 29b is a shoulder portion that engages with the step portion 30a. When the nut holder 29 assumes the A position, the receiving member 29 has the same function as the receiving member 4. Further, when the nut holder 29 takes the B position, the receiving member 29 is in the C position in FIG.
By cutting along the -C line, it can perform the same function as the receiving member 5. In addition, the 10th
12, the same reference numbers as in FIGS. 2 to 6 indicate the same components.

(Effects of the Invention) As explained above, according to the free access floor fixing device of the present invention, the corners of the floor panel are pressed downward by the presser members, so that the support legs can adjust the height adjustment mechanism. Even if the height adjustment mechanism is attached to the floor panel via the height adjustment mechanism, wobbling due to the interposition of the height adjustment mechanism is reliably prevented. Further, since the supporting legs are fixed in a crimped state to prevent rotation, the same effect as that of locking bolts can be achieved with good workability, and the adjusted height can be kept constant.

Further, due to the presence of the presser member, the corners of the floor panel do not rise.

Furthermore, floor construction is completed by simply placing the support legs provided at the corners of the floor panel on the receiving members and fastening the presser members to the receiving members, so precise positioning is not required when installing the floor panels. This eliminates the need for the support legs, and together with the fact that the height of the support legs can be easily adjusted, the ease of floor construction is greatly improved.

Note that a partition can also be attached to the fastening device.

[Brief explanation of drawings]

FIG. 1 is a partial perspective view of a raised floor fixed with the fixing device of the present invention, and FIG.
3 is an exploded perspective view of the fixing device shown in FIG. 2, FIG. 4 is a half sectional view of the nut holder shown in FIG. 2, and FIG. 5 is a sectional view of the nut holder shown in FIG. 1. 6 is a plan view of the receiving member in FIG. 5, FIG. 7 is a sectional view of the floor panel along the line - in FIG. 8, and FIG. A bottom view of the floor panel, FIG. 9 is a sectional view showing another way of using the nut holder, and FIG. 10 is an exploded perspective view of another embodiment of the receiving member and nut holder used in the fixing device of the present invention. , FIG. 11 is a sectional view taken along the - line in FIG. 12, and FIG.
FIG. 2 is a cutaway plan view of the receiving member of FIG. 1; 1... Free access floor, 2... Floor panel, 3... Reference floor surface, 4, 5, 28... Receiving member, 17, 18, 20... Holding member, 14, 29
... Nut holder, 16 ... Bolt, fastening device, 6 ... Support leg placement surface, 7 ... Support leg locking surface,
8...Tapered surface, 24...Height adjustment mechanism, 25...
...Support legs.

Claims (1)

[Claims] 1 A fixing device for a raised floor consisting of a plurality of floor panels each equipped with support legs arranged adjacent to each other on a reference floor surface, wherein a receiving member fixed to a reference floor surface; attached to a corner of the floor panel via a height adjustment mechanism, and
the supporting leg placed on the receiving member; a presser member that engages from above the floor panel with a corner of the floor panel gathered above the receiving member; and a presser member that is attached to the receiving member. A fastening device for removably connecting the fastening device,
Fixed equipment for raised floors.