JPS6322964A - Apparatus for fixing free access floor - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 equipped with support legs adjacent to each other on a reference floor surface. .

(Prior technology) A large number of floors/gunnels are laid above a reference floor surface such as a concrete floor, and a free space is secured between the floor panel and the reference floor surface in which cables, ventilation ducts, etc. can be placed. BACKGROUND OF THE INVENTION Heavy-duty structures, or raised floors, are becoming widely used.

This is because such a raised floor is composed of a large number of individually independent floor panels.

Position each floor panel at a predetermined location on the reference floor surface,
Fixing is necessary to prevent the floor/ξ panels from shifting or wobbling, and to provide a flat floor surface.

Therefore, conventionally, when constructing a free access floor by laying a floor gable having support legs, a connecting device that engages with the supporting legs is fixed at a predetermined position on the reference floor surface, and an adjacent The floor panel is positioned and fixed by engaging the supporting legs of the floor panel (see Japanese Utility Model Application No. 58-75833).

(Problem to be solved by the invention) However, since a height adjustment mechanism such as a screw mechanism is usually interposed 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, floating spots occur at the corners of the floor panel.

Furthermore, since the retaining position of the support leg with respect to the connector is accurately regulated by the recess or protrusion that fits with the lower part of the support leg,
During floor construction, it is difficult to engage the support leg with the concave or convex portion formed on the connector.

SUMMARY OF THE INVENTION Therefore, one object of the present invention is to provide a fixing device for a raised floor, which 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 fixing device for a free access floor 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 via the support member and placed on the receiving member; a presser member that engages from above the floor panel at the corner of the floor panel gathered above the receiver member; The structure is characterized in that it includes a fastening device that is detachably connected to the receiving member.

(Function) When constructing a raised floor, first, the receiving members are fixed at predetermined positions on the standard floor surface using adhesives, anchors, etc. The predetermined position referred to in N 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, and at this time, each of the support legs attached to the corner of the floor panel via a height adjustment mechanism is
placed on a corresponding receiving member. Next, a presser member is engaged from above with the corner of the floor panel where the money has been collected above the receiving member, and this presser member is removably connected to the receiving member by a fastening device. The holding member presses the corner of the floor panel downward to prevent it from floating, and
The support legs attached to the corners of the floor panel via the height adjustment mechanism are pressed in the vertical direction to prevent wobbling due to the installation of the height adjustment mechanism.

(Example) An embodiment of the present invention will be described below 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 raised floor 1 has a plurality of floor panels 2.2.2. . . The receiving member 4 is disposed below the position where the four corner portions 2a of the four mutually adjacent floor/ξ panels are assembled, and the receiving member 5 is
It is arranged below a position where two corners 12a of two adjacent floor panels come together (see FIG. 1).

The receiving member 4 has a circular shape as a whole, and an annular supporting leg mounting surface 6 that extends concentrically is formed on its upper surface. The reason why the receiving member 4 is circular is to change the direction of attachment and to facilitate positioning and fixing to the reference floor surface 3. A support leg locking wall 7 extends annularly from the outer edge of the support leg placement surface 6, and 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, and the receiving member 4 is fixed with an 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).

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

Reference numeral 17 indicates a circular holding member, and a bolt 16 is installed in the center of the holding member.
A hole 17a is formed through which the hole 17a is inserted.

An annular stepped portion 171) is formed on its lower surface.

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.

In Fig. 6, 6 is a supporting leg mounting surface, 7 is a supporting leg locking wall, 8 is a tapered surface, 9 is a through hole, 10 is a boss portion, 11 is a reinforcing rib, and 12 is an adhesive inflow hole. Each is shown below.

Moreover, the structure of the fastening device is also similar, as shown in FIG.

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 includes
The basic structure is the same as that of the holding member 17 except that it has a semicircular shape as a whole. That is, 18a in FIG.
is a hole into which the bolt 16 is inserted, and 18b is a semi-annular stepped portion.

In addition, in the corner of the room indicated by 19 in FIG.

Normally, it is not necessary to arrange the receiving member or holding member of the present invention, but if it is necessary, a quadrant-shaped 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 a steel plate and a lower surface plate 22 made of a steel plate by spot welding or the like, and filling the space between the upper surface plate 21 and the lower surface plate 22 with an inorganic material. It is constructed by filling a system filler 23. Floor panel 2 is
Moreover, it has a square shape as a whole, and each corner 2a,
2a, . . . are formed with a quadrant-shaped step portion 2b and a notch portion 2C that engage with the presser member 17, 18° 20. And each corner 2a, 2a of the floor panel 2
, . . . are attached with support legs 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 support leg 24b screwed into the threaded portion 24a of the inner sleeve 24b.
5 and a threaded portion 25a formed on the circumferential surface of 5. The inner sleeve 24b is press-fitted into the outer sleeve 26 fixed to the floor panel 2 and is locked in a non-rotatable manner, so by rotating the support leg 25, the height of the floor panel 2 from the reference floor surface 3 can be adjusted freely. can be adjusted to Note that the mounting structure of the support leg is not limited to the above-mentioned one, and for example, the support leg 25 may be mounted without using the inner sleeve 24b.
may be directly screwed onto the floor panel 2.

In addition, in FIG. 8, 27 is a reinforcing rib formed on the bottom 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 support legs 25 are placed on the support leg placement surface 6, and the floor panels 2゜2, . The presser member 17 is engaged with the quadrant-shaped step portion 2b. Then, if the holding member 17 is fastened to the nut holder 14 with the bolt 16,
While the floor panel 2 is positioned, its corner 2b
As a result of being pressed downward, the height adjustment mechanism 24 is pressed in the vertical direction, and wobbling caused by the interposition of the height adjustment mechanism 24 is prevented. Since the support legs 25 are fixed in a crimped state and are prevented from rotating once, 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 performs a similar fixing function. FIG. 9 shows the 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. 4. In place of the nut holder 14 in FIG.
This shows that a taller nut holder 14' can be used. This is an effect of the structure in which the nut holder 14, 14' is detachably attached to the receiving member 4.

Note that the nut holder 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 the feature of this embodiment is that the above-mentioned two It is possible to achieve the same function as the combination of one type of receiving member 4.5 and one type of nut holder 14. That is, the receiving member 2
A long hole 30 having a stepped portion 30a is formed in the boss portion 10 of No. 8, and a nut holder 29 having a nut holding portion 29a at an eccentric position is installed in this long hole 30 with a phase shift of 180 degrees.
It can be inserted at positions B and B. 29b
is a shoulder portion that engages with the stepped portion 30a. When the nut holder 29 takes the A position, the receiving member 29 performs the same function as the receiving member 4. Also, nut holder 2
When 9 takes the B position, the receiving member 29 is in FIG.

By cutting at CC@, it can perform the same function as the receiving member 5. In FIGS. 10 to 12, the same references 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, since the corners of the floor panel are pressed downward by the presser members, the supporting legs can be moved through the height adjustment mechanism. Even when installed on a floor panel, rattling due to the interposition of the height adjustment mechanism is reliably prevented. Further, since the supporting legs are fixed in a crimped state and prevented from rotating, the same effect as that of a lock bolt or the like 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 combined with the fact that the height of the supporting legs is easy to adjust.

Floor workability 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 free access floor fixed with the fixing device of the present invention, and FIG. 2 is a sectional view of the main part along the line ■-■ in FIG. FIG. 3 is an exploded perspective view of the fixing device in FIG. 2, and FIG.
FIG. 2 is a half-sectional view of the nut holder, and FIG. 5 is a sectional view of the main part taken along line V-V in FIG. 1. FIG. 6 is a plan view of the receiving member in FIG. 5. FIG. 7 is a sectional view of the floor panel taken along the line ■-■ in FIG. 8, and FIG. 8 is a bottom view of the floor panel. FIG. 9 is a sectional view showing another usage mode of the nut holder. 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. 11 is a sectional view taken along the line XI-XI in FIG. 12, and FIG. 12 is a cutaway plan view of the receiving member in FIG. 11. 1... Free access floor, 2... Floor panel. 3...Reference floor surface, 4.5.28...Receiving member. 17, 18.20... Pressing member. 6... Support leg placement surface, 7... Support leg locking surface. 8...Tapered surface, 24...Height adjustment mechanism, 25...
・Support legs.阜5 Concave term sign Qin 9 Diagram Qin 10 T:! J 74, 17 figure Lt2 figure

Claims (1)

[Claims] (1) A fixing device for a raised floor consisting of a plurality of floor panels equipped with support legs arranged adjacent to each other on a reference floor surface, below the location where the corners of two or more adjacent floor panels meet. a receiving member fixed to the reference floor surface; the supporting leg attached to a corner of the floor panel via a height adjustment mechanism and placed on the receiving member; A free press characterized by having a presser member that engages from above the floor panel at a corner of the floor panel gathered upwardly, and a fastening device that removably connects the presser member to the receiving member. Access floor fixing device.