JPS63261055A - Free access floor - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention is designed to prevent vibrations in buildings caused by earthquakes, etc.
This invention relates to a free access floor in which imaging input acceleration is attenuated on the upper floor of a double floor constructed in a building.

(Prior art) The floor on which conventional computer systems and OAlffi devices are installed is a double floor called a free access floor. Supports are erected on the building floor of the building itself, and floor panels are attached to these supports. was placed.

However, this alone does not reduce seismic force, so seismic isolation devices combined with springs and oil dampers are appropriately placed on the building floor, and beams are crossed between these seismic isolation devices. The vibration input acceleration of the upper floor can be reduced by standing and fixing a short pedestal that supports the floor panels, and constructing the upper floor by sequentially arranging the floor panels between the pedestals using the panel supports installed at the top of the pedestal. Had to get a raised floor to attenuate.

The free access floor with the above-mentioned structure receives the action of the seismic isolation device through the beam assembly, and has a short pedestal erected on the top surface, so it has high rigidity, and the entire beam assembly is seismically isolated. This greatly reduces the shaking of the upper floor, which is made up of floor panels.

(Problem to be solved by the invention) However, in the conventional raised floor,
It became necessary to increase the clearance between the floors of the double floor by the number of beams assembled between the seismic isolation devices, and space was wasted in the height direction.

In addition, the seismic isolation device also bears the weight of the beam assembly, so it was required to have sufficient capacity to withstand vertical loads m.

The present invention has been made in view of the above circumstances, and its purpose is to remove the beams and obtain an effective space corresponding to the beam composition, while minimizing the burden of the material load of the floor structure on the seismic isolation device. Furthermore, the purpose is to provide a free access floor that can be easily assembled on a case-by-case basis by freely selecting the planar shape of the floor panels.

(Means for Solving the Problems) In order to achieve the above object, the free access floor of the present invention has pillars that are arranged on the floor of a building at predetermined intervals and are swingable back and forth and left and right, and A connecting member whose connecting shaft ends are universal joints, a floor panel supported by pillars, a seismic isolation device intermittently placed upright between the pillars on the floor of the building, and an end of the H isolation device. It consists of a connecting rod that swingably connects the main column and its latest support.

(Function) Each column itself can swing freely, and the columns are connected by a connecting member with a universal joint without interfering with this swinging motion, so each column supports the other columns. The machine is now in a state where one-stroke movement is possible. Seismic isolation devices are placed intermittently between arbitrary columns, and the end of the device is connected to the latest column with a connecting rod without interfering with the rocking motion 1 of the column. On the other hand, the natural vibration period of the seismic isolation device will attenuate the vibrations of the columns connected by each connecting rod. Each column is independent on the building floor, supports the floor panel, and there is no vertical load on the seismic isolation device, so the horizontal force acting on the column is
Bear the stress due to this horizontal force.

Assembling is done by sequentially connecting the struts placed at appropriate locations with connecting members of the required length, without preparing in advance the assembly structural materials that match the required planar area, and the same goes for between the seismic isolation device and the struts. .

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

A schematic side view is shown in FIG. 1, and a free access floor 1 is installed on a building floor 2, and together with the building floor 2, it forms a double floor.

The pillar 3 has a bundle material 5 erected on a base 4, and a joint device 6 is provided on the top of the bundle material 5, and the joint device 6 has a fitting groove 7 and a floor panel 8 that constitute a put-in type ball joint. A panel holding groove 9 into which the panel is fitted is bored.

The free access floor 1 is constructed by arranging the pillars 3 at predetermined intervals in the vertical and horizontal directions on the building floor 2, and sequentially supporting the pillars while fitting the floor panels 8 into the panel support grooves 9 of the joint device 6 provided at the top. A floor panel 8 is installed between the floor panels 3 and 3, and an upper floor is constructed using the floor panel 8.

An extension part 11 projects horizontally from the indoor wall surface 10 on which the free access floor 1 is installed so as to slightly cover the edge of the floor panel 8 opposing the wall surface 10, and a lower part of the extension part 11 is provided. There is a wall 10 and a recent post 3 on wall 10.
A coil spring 12 is suitably compressed and arranged between the side surface of the joint device 6 and the side surface of the joint device 6.

Each of these pillars 3, 3' connects the fitting sphere 13 portion of the connecting member 14, which has fitting spheres 13 formed at both ends, to the joint device 6.
By fitting into the fitting grooves 7, they are connected to each other by a connecting member 14.

Next, the support column 3 and the connecting member 14 are shown in detail in FIGS. 2 and 3, and will be explained.

The upper end of the bundle material 5 is formed into a sphere 15 for forming a ball joint. A concave curved surface 16 that matches the spherical shape of this sphere 15 is formed at the center of the end surface of the joint device 6, and the top surface of the sphere 15 is brought into contact with the concave curved surface 16, and the bundle material 5 is passed from below to above. A fixing plate 17 that loosely wraps the sphere 15 with approximately the same radius is fixed to the back surface of the joint device 6 with bolts 18, and the joint device 6 is ball-jointed to the top of the bundle material 5.

Furthermore, the middle part of the bundle material 5 is divided, and a right-hand thread and a reverse-hand thread are screwed into the divided ends, respectively, and an internal thread is bored in the height adjustment f519 that spans this screwed part. Then, screw the adjustment tube 19 into the above-mentioned normal screw and reverse screw, and adjust the adjustment tff.
A fixing bolt 2o is provided which is screwed laterally into the bundle material 5 from the outer peripheral surface of the bundle member 119.

By rotating the adjustment tube 19 in the left-right direction, the intermediate portion divided end surfaces of the bundle material 5 are moved away from each other or closer to each other in the vertical direction,
As a result, the height of the pillars 3 can be adjusted to absorb dimensional errors in the building floor 2 and the pillars 3, and it is also possible to give an arbitrary slope to the upper floor constructed on the floor panel 8.

The lower end surface 21 of the bundle material 5 is formed into a hemispherical surface, and the center of the pedestal 4 also has a recess 22 formed into a concave curved surface. The lower end surface 21 of is fitted into the recess 22.

As described above, the support column 3 can swing freely in any direction while keeping the upper surface of the joint device 6 horizontal.

On the other hand, the surface of the joint device 6 is provided with a vertical groove perpendicular to the plane direction at the center, and the width and depth of the groove are equal to those of the floor panel 8.
This vertical groove serves as the panel support groove 9 of the floor panel 8. The protruding strip 24 is fitted into the fitting groove 7 to assist in dimensional fit during assembly and to prevent falling off. This panel groove 9 has a planar diameter large enough to fit the fitting sphere 13 of the connecting member 14 near the end of the coupling device 6, and is a fitting groove 7 having a semi-formed bottom surface of the same diameter. The extended axial end edge of the supporting groove 9 is a relief notch 28 which is enlarged into a fan shape and is integral with the fitting groove 7 .

The connecting member 14 is a put-in type ball joint in which the fitting sphere 13 at the end is lowered vertically downward from above and is fitted into the fitting rI47.
and another joint device 6 are connected in a swingable manner.

Therefore, when the floor panel 8 is pushed in the horizontal direction, the end portion thereof is allowed to swing freely in the horizontal direction while being resiliently bound by the spring 12.

Next, the configuration with the seismic isolation device 25 will be described. The seismic isolation device 25 is a laminated rubber bearing, a combination of coil springs and air springs, etc., and isolates horizontal vibrations on the top side from horizontal vibration input acting on the bottom side! Any elastic structure that can be obtained may be used. This is arranged intermittently between the pillars 3-3 as appropriate. Its arrangement is such that its base end is fixed to the building floor 2. The upper end of the seismic isolation device 25 has a constant horizontal shear force of 1! It is connected to the pillars 3-3-3-3 located in the most recent row and column directions via a lock bin 26 to be destroyed by a connecting rod 27 so as to block the swinging of the pillar 3.

When the locking action of the lock bin 26 is released, the shaking of the upper end of the support column 3 with respect to the swinging movement of the building floor 2 is completely seismically isolated by the connecting rod 27 and the connecting member 14.

(Effects) As explained in detail above, according to the raised floor of the present invention, the rIIvJ support columns are connected with a connecting member that does not inhibit the rocking motion of the columns, and a seismic isolation device is installed intermittently between the columns. The seismic isolation device and the pillars near the seismic isolation device are connected without mechanically restricting the rocking motion of the pillars, so the floor panels installed between the pillars are protected from seismic motion by the seismic isolation device. do not have.

This seismic isolation device is installed on the floor of the building, and not only does it bear the load of the floor panel, but there is nothing installed at the top of the device, just a connecting rod for the bolt to the support, so it is easy to use. They can be replaced, or a variety of seismic isolation units can be combined to form a seismic isolation device. Furthermore, there are no horizontal beams between the building floor and the floor panel, so at least the space in the height direction is not wasted by the amount of beams. This thing is
In addition, the weight of the beam is relatively reduced, which is advantageous in terms of load bearing on the building floor, and from the perspective of assembly work, all you have to do is install the supports in any position and connect them. Therefore, it can be flexibly adapted to the shape of the building floor and is easy to assemble.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a schematic configuration, FIG. 2 is a perspective view of a support column, and FIG. 3 is an enlarged vertical cross-sectional view of a support portion of a raised floor. 1...Free access floor 2...
Building floor 3... Support column 4...
Pedestal 5...Bundle material 6...
Coupling device 7... Fitting groove 8...
・Floor panel 9...Panel support groove 10...
Wall surface 11... Extension portion 12... Coil spring 13... Fitting sphere 14... Connection member 15
... Sphere 16 ... Concave curved surface 17 ... Fixing plate 18 ... Bolt 19 ... Adjustment cylinder
20...Fixing bolt 21...Lower end surface
22... Depression 23... Adhesive 24...
・Convex shape 25...Seismic isolation device 26...Lock bin 27...Connecting rod 28...Notch for relief Patent applicant Obayashi Co., Ltd. Composition
Patent Attorney - Iro Ken Interpolation
Patent Attorney Masatoshi Matsumoto Figure 2 2.5

Claims (4)

[Claims] (1) Supported by pillars arranged on the floor of a building at predetermined intervals and swingable back and forth, left and right, a connecting member with a universal joint at the end of the connecting shaft that connects the pillars, and A raised floor characterized by comprising a floor panel. (2) A seismic isolation device that is intermittently arranged upright between the pillars on the floor of the building, and a connecting rod that swingably connects the end of the seismic isolation device and the nearest pillar. The raised floor according to claim 1, characterized in that the raised floor comprises: (3) The pillar is provided with a pedestal at the base of the bundle material, and a joint device is provided at the top, and the lower end of the bundle material of the pillar and the pedestal are formed into curved surfaces of approximately the same ratio, and the bundle material is attached to the pedestal. Put it on,
The free access floor according to claim 1, wherein the top of the bundle material and the joint device are formed into a spherical joint. (4) The free access floor according to claim 1, wherein the end universal joint of the connecting member is a put-in type spherical joint.