JPH0721245B2 - Floor panel support equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a floor panel having a plurality of fixed legs standing on a reference floor and a stringer installed between adjacent fixed legs. The present invention relates to a supporting device.

(Prior art) A double floor with a large number of floor panels laid above a standard floor surface such as a concrete floor and a free space where cables and ventilation ducts can be placed between the floor panel and the standard floor surface. The structure, the free access floor, is known.

Among such free access floors, the raised floor type uses independent fixed legs in which the fixed legs are separate from the floor panel. When using an independent type fixed leg, first fix the base of the lower end of the fixed leg to the reference floor,
Then, a stringer is installed between the upper ends of the fixed legs, and the ends of the stringers are fixed to the stringer cradle above the fixed legs.

Conventionally, as a supporting device for this kind of floor panel, for example, one disclosed in Japanese Utility Model Publication No. 56-38110 is known. According to this support device, stringers are arranged in a grid pattern between the upper ends of the fixed legs that are erected on the reference floor and fixed to each fixed leg. A stringer pedestal for accommodating the end portion of the stringer is provided in a cross direction at 90 ° intervals, and an upward protrusion is provided on the bottom of the stringer pedestal so as to engage with a hole formed in the stringer. is doing.

(Problems to be Solved by the Invention) However, in the above-described floor panel support device, fastening means such as bolts and nuts are used to fix the end portion of the stringer to the upper end portion of the fixed leg. In addition to the complicated work, there is a problem that the efficiency is poor because the bolts and the like are attached and detached even during underfloor work such as wiring.

Therefore, an object of the present invention is to provide a floor panel support device in which a stringer is detachably fixed to the upper ends of the fixed legs in a pressure contact state and has a function as a jig during construction.

(Means for Solving the Problems) In order to achieve the above object, a support device for a floor panel according to the present invention is installed between a plurality of fixed legs that are erected on a reference floor surface and between the adjacent fixed legs. A support device for a floor panel having a stringer, wherein the stringer is provided with a main body having a U-shaped cross section having a downward opening, and projecting edge portions having rising portions at both lower ends of the main body are provided. Forming a stringer cradle on the head of the fixed leg, the side wall extending in the erection direction of the stringer, accommodating the end of the stringer, and provided with a side wall in pressure contact with the rising portion. A protrusion and a hole which are fitted to each other when the stringer is installed, and the side wall of the stringer cradle is provided with the stringer. A hook for engaging the rising portion of the protruding edge portion of the stringer with each other during the installation of the stringer to bring the protruding edge portion of the stringer into close contact with the bottom portion of the stringer cradle, and both end portions of the stringer. Is removably engaged with the stringer cradle of the adjacent fixed leg.

(Operation) In the floor panel supporting device of the present invention having such a configuration, when the end portion of the stringer is fitted into the stringer cradle at the upper end of the fixed leg, the rising portion of the projecting edge portion of the stringer becomes the side wall of the stringer cradle. Pressure contact again
The projection on the bottom of the stringer cradle and the hole on the projecting edge of the stringer are fitted together, and the movement of the stringer in the axial direction is restricted. Furthermore, the locking claw on the side wall of the stringer cradle and the rising portion of the projecting edge of the stringer engage with each other,
The stringer is brought into close contact with the bottom of the stringer cradle and its removal is prevented.

As described above, in the floor panel supporting device configured by fitting the end portion of the stringer into the stringer cradle of the fixed leg, the stringer is fixed to the stringer cradle in a pressure contact state, and its erection direction is accurately maintained. At the same time, the distance between the adjacent fixed legs is kept constant.

Therefore, the fixed leg is positioned by the stringer, and the workability can be improved.

Even when the stringer needs to be attached / detached due to a change in wiring or piping, the attachment / detachment can be performed with one touch, so that the maintainability can be improved.

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

The free access floor 1 includes a plurality of floor panel support devices 20 each having a fixed leg 4 erected on the reference floor 3 and a stringer 15 installed between the adjacent fixed legs 4 and 4 as main components. It is configured by placing and fixing a number of floor panels 2.

The fixed leg 4 is constructed by vertically arranging a cylindrical column base 7 provided with a stringer cradle 8 at the upper end through a height adjusting mechanism 6 at the center of the upper surface of the base. This stringer cradle 8 has four grooves 8a for accommodating the ends of the stringers 15.
And the grooves 8a are formed in a cross shape so as to project in the horizontal direction. This groove 8a is formed in a U-shaped cross section by a bottom portion 8b and a side wall 8c, and the bottom portion 8b has two tapered shapes that fit with holes 13 formed in a projecting edge portion 15b of a stringer 15 described later. Protrusions 9 are provided respectively, while side walls
Locking claws 10 that engage with the upper ends of the rising portions 15d of the stringers 15 are provided on the 8c, respectively. In addition, a panel pressing receiver 12 with which a panel pressing member 11 engages is provided in the central portion of the stringer receiving base 8.

The stringer 15 is formed as a channel material having a U-shaped lateral cross section by being bent, and a main body portion 15a extending in the longitudinal direction is formed in the central portion thereof. At the lower ends on both sides of the main body portion 15a, a projecting edge portion 15b having a horizontal portion 15c protruding horizontally along the main body portion 15a and a rising portion 15d is formed, and the horizontal portion 1 of each end portion is formed.
A hole 13 is provided in 5c. Here, in the figure, 15e is
Reinforcing ribs 15h for increasing the rigidity so as to prevent the buckling phenomenon of the ends of the stringers 15 caused by the vertical load acting on the stringers 15 and the floor panel 2,
Ribs that guide the support member 16, 15f are protrusions for causing elastic action on the projecting edge portion 15b, and 15g is a support that is formed by projecting the end portion of the main body portion 15a into a predetermined size by pressing. The receiving surfaces are shown respectively.

In addition, a support member 16 integrally molded with a suitable synthetic resin such as ABS resin is fitted to the main body portion 15a of the stringer 15 at predetermined intervals. The stringers 15 extend along the edges of the floor panel 2, and the floor panel 2 is supported at its peripheral edge portion on the bottom surface by the engaging portions 16 a of the support member 16. Then, the floor panel 2 is fixed to the supporting device 20 by tightening the step portions 2a at the four corners of the floor panel 2 with the panel retainer 11. In the figure, 11a is a slide ring interposed between the panel retainer 11 and the stepped portion 2a,
Further, 11b indicates a cap fitted to the panel presser 11.

Now, the engagement state between the stringer 15 and the stringer cradle 8 will be described in detail. The rising portion 15d of the stringer 15 is the side wall 8c of the groove 8a of the stringer cradle 8.
The two protrusions 9 provided on the bottom portion 8b of the groove portion 8a and the holes 13 provided on the respective projecting edge portions 15b of the stringers 15 are fitted together. Therefore, the stringer 15 is restrained from moving in the axial direction and accurately held in the erection direction, and further, the interval between the adjacent fixed legs is made constant.

Further, the locking claw 10 provided on the side wall 8c of the stringer cradle 8 is engaged with the upper end of the rising portion 15d of the stringer 15. Due to this engagement, the stringer 15 is
It is pressed downward, the horizontal portion 15c of the projecting edge portion 15b is brought into close contact with the bottom portion 8b of the stringer receiving base 8, the upward pull-out is prevented, and furthermore, the above-mentioned protrusion 9 and the hole 13 are securely fitted. Has been maintained.

(Effects of the Invention) As described above, according to the floor panel support device of the present invention, the end portion of the stringer is the stringer cradle at the upper end of the fixed leg, and the rising portion of the projecting edge portion of the stringer is the stringer cradle. It comes into pressure contact with the side wall, the projection on the bottom of the stringer cradle and the hole on the projecting edge of the stringer fit together, and the locking claw on the side wall of the stringer cradle and the rising part of the projecting edge of the stringer It is fitted in the engaged state.

Therefore, the stringer is fixed to the stringer cradle in a pressure contact state, the erection direction thereof is accurately maintained, and the interval between the adjacent fixed legs is maintained constant.

Therefore, the fixed leg can be positioned by the stringer, and the workability can be improved.

Further, even when the stringer needs to be attached / detached due to a change in wiring or piping, the attachment / detachment can be performed with one touch, so that the maintainability can be improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing how the stringer is attached to the fixed leg, FIG. 2 is an exploded perspective view in which the same attached portion is enlarged, and FIG. 3 is a cross-section of the upper end portion of the fixed leg when fixing the floor panel. It is a figure. 3 ... Standard floor surface, 4 ... Fixed leg, 8 ... Stringer cradle, 8c ... Side wall, 9 ... Protrusion, 10 ... Locking claw, 13 ... Hole, 15 ... Stringer, 15b ... Edge, 15d …… Rise, 20 …… Floor panel support device.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tatsuo Shoji 39 Shinmachi, Yashio City, Saitama Prefecture, Tokyo Institute of Technology, Tokyo Research Institute (72) Inventor Tetsuo Tobikawa 39 Shinmachi, Yashio City, Saitama Prefecture Nakagi Technology Co., Ltd. Laboratory Tokyo Laboratory

Claims (1)

[Claims] 1. A floor panel support device having a plurality of fixed legs erected on a reference floor and a stringer installed between adjacent fixed legs, wherein the stringer has a downward opening. A main body having a U-shaped cross section is formed, and projecting edges having rising portions are provided at both lower ends of the main body, the head of the fixed leg extends in the erection direction of the stringer, and the stringer is provided. Forming a stringer cradle that accommodates the end of the stringer and is provided with a side wall that is in pressure contact with the rising portion, and a projection that is fitted to the bottom of the stringer cradle and the projecting edge of the stringer when the stringer is installed. And a hole, and the side wall of the stringer cradle is engaged with the rising portion of the projecting edge portion of the stringer when the stringer is installed, Forming a locking claw for closely contacting the protruding edge of the stringer with the bottom of the stringer cradle, and detachably engaging both ends of the stringer with the stringer cradle of the adjacent fixed leg. A floor panel support device characterized by: