JPH0932262A - Vibration control floor using granular cushioning material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration control floor using a high-performance granular cushioning material and arranged with an elastic container storing the granular cushioning material at the lower section of a strut supporting an OA floor for improving the absorbing characteristic of shocks such as the vibrations and sound of a double floor using the OA floor. SOLUTION: A hole is bored on a borable panel 2 in an OA floor constituted of an uppermost facing 1 and the borable panel 2. A floor connection section 3 is provided at a bored hole section, and a strut 4 is erected downward from the floor connection section 3. A strut erecting material 6 screwed to a screw 5 provided at the lower end of the strut 4 is provided at the lower section of the strut 4. The strut erecting material 6 connects the strut 4 and an elastic container 7, and it seals the upper section of the elastic container 7 storing a granular cushioning material 8. The elastic container 7 is suspended on a slab upper face 9 at the lowermost section and receives the load of the OA floor transmitted to the strut 4. The elastic container 7 is made of rubber, the granular cushioning material 8 is calcined sand, and the strut erecting material 6 is constituted of a nut and a washer. When a plate-like elastic support member is inserted between the upper face of the elastic container 7 and the slab upper face 9 as required, a higher-efficiency vibration absorbing mechanism is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double floor using an OA floor, and in order to improve absorption characteristics of buffer due to vibration or sound, an elastic material in which a granular cushioning material is enclosed under a bundle supporting the OA floor. Relating to the anti-vibration floor with the container,
Especially, it relates to a vibration-isolated floor in which baked sand is enclosed.

[0002]

2. Description of the Related Art A conventional anti-vibration floor has a structure as shown in FIG. That is, in a double floor using an OA floor composed of the uppermost finishing plate 1 and the panel 2 which can be perforated, the panel 2 which can be perforated is perforated, and the floor joint portion 3 is formed in the hole. A bundle 4 is provided upright below the floor joint 3. At the bottom of the bundle 4, there is a bundle material 14, and the bundle material 1
A rubber plate 15 is installed between the upper surface 9 and the lowermost slab upper surface 9. The upper end of the spring 13 is in contact with the floor joint portion 3 and the lower end thereof is in contact with the bundling member 14, so that the bundle 4 has an internal shape. The load applied to the double floor is received by the spring 13 and the rubber plate 15. As the rubber plate 15, a member that compresses in the direction in which a load is applied is adopted because of the problem of bending and permanent strain of the rubber. When using the shearing direction, a rubber plate having a high rubber hardness is used.

[0003]

The cushioning absorption characteristic of the rubber plate 15 is improved by changing the direction in which the load is applied from the compression direction to the shearing direction. However, in order to withstand the load, the rubber hardness must be increased, and as a result, there is a problem that the cushioning absorption characteristic is deteriorated.

Further, when a load smaller than the designed maximum load is applied, the repulsive force of the rubber plate 15 is large, so that rebound (vibration of a plurality of times due to repulsion) may occur. This phenomenon is the same when only the spring 13 receives a load.

Further, since only the rubber plate 15 finally bears the entire load, there is a problem that the rubber plate 15 is gradually crushed when the floor load is large and the vibration damping effect cannot be obtained.

The object of the present invention is to eliminate the above-mentioned problems of the prior art as much as possible, and to enhance the absorption characteristics of shock waves such as vibration and sound.
An object is to provide a vibration-isolated floor using a granular cushioning material that suppresses rebound and can be used stably for a long period of time.

[0007]

A vibration-isolating floor according to the present invention solves the above-mentioned problems and has the following structure. That is, in a double floor using an OA floor composed of a top surface finishing plate and a panel capable of perforating, first, a hole is perforated in the panel capable of perforating. A floor joint is provided in the hole, and the bundle is erected below the floor joint. In the lower part of the bundle, an elastic container in which a granular cushioning material is enclosed via a stacking material is vertically provided on the upper surface of the lowermost slab. If necessary, a plate-shaped elastic support member may be provided between the bottom surface of the elastic container and the upper surface of the slab. The plate-shaped elastic support member is preferably made of, for example, spring steel.

Here, the OA floor is a floor on which OA equipments are installed, and therefore it is necessary to reduce vibration as much as possible, and the panel plate capable of perforating is provided on the lower surface thereof. It is a thing. The bundle is a pillar of an OA floor. The bundling material connects the bundle and the elastic container, and also seals the upper part of the elastic container having the granular cushioning material therein. The elastic container is
Shock waves such as vibrations and sounds received on the A floor are highly efficiently absorbed by the built-in granular cushioning material.

In order to absorb vibration particularly efficiently, for example, it is necessary to use rubber as the material of the elastic container and to use the sand sand 5 to 7 as the granular cushioning material 8. Also, dry hard granular plastic or the like may be used.

The method for fixing the bundle stand and the bundle includes
For example, there is a method in which a screw is provided at the lower end of the bundle, the bundle forming material is a nut and a washer, and the bundle and the bundle forming material are screwed together by the screw.

With regard to the elastic container, a single or a plurality of recesses are horizontally provided on the outer periphery of the elastic container, and a reinforcing annular member is fitted into the recess. By doing so, it is also possible to improve the vibration isolation performance of the elastic container.

The elastic supporting member is provided below the elastic container as required. For example, the elastic supporting member is formed into a plate shape, and four elastic supporting members are used to form a so-called cross girder shape or a wide two-piece structure. It consists of crossed pieces made of sheets.
Further, the elastic container can be installed in the center thereof. The plate-shaped elastic support member is, for example, a plate spring curved in a bow shape.

In a double floor consisting of an OA floor and a panel that can be perforated, holes are made in the panel that can be perforated. A floor joint is provided in the hole, and the bundle is erected below the floor joint. An elastic container in which a granular cushioning material is enclosed is vertically provided on the upper surface of the slab at the bottom of the bundle through a bundle stand. If you use it in this way,
The load applied to the heavy floor is transmitted from the joint portion to the elastic container via the bundling material fixed to the bundle. Since the elastic container swells when a load is applied, the elastic container receives the load in the shearing direction, and the shock absorbing characteristics are improved. Then, when a load is applied, the energy of the shock is absorbed even if the particles of the granular cushioning material existing in the elastic container are rubbed or the positions are changed, and the shape is restored, so that the shock absorbing characteristics can be further improved. it can. Moreover, the rebound can be reduced by changing the specific gravity of the granular cushioning material. Furthermore, since the presence of the granular cushioning material suppresses the deflection of the elastic container and distributes the load, the elastic container is less fatigued and can be used stably for a long period of time. The granular elastic material is ideally made of baked sand.

Further, if necessary, an elastic supporting member may be provided laterally between the bottom surface of the elastic container and the upper surface of the slab. In this case, it is possible to handle a wider load than when using only the elastic container. The rebound can be absorbed by the granular cushioning material in the elastic container, as in the case where the elastic support member is not provided laterally.

Further, if a single or a plurality of hollows are provided horizontally on the outer circumference of the elastic container and a reinforcing annular member is fitted into the hollow, the elastic container is prevented from being deformed, so that it can be used stably for a longer period of time. In addition, as an effect of the depression, when the granular cushioning material in the elastic container moves when a load is applied, resistance is generated between the depression and the shock absorbing energy, which is also expected to be absorbed. it can.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION An anti-vibration floor using the granular cushioning material of the present invention will be described in detail below with reference to the drawings. As shown in FIG. 1, in a double floor composed of a top surface finishing plate 1 and a panel 2 which can be perforated, a floor joint 3 is provided in a hole formed in the panel 2 which can be perforated. A bundle 4 is erected downward from the portion 3, and an elastic container 7 in which a granular cushioning material 8 is enclosed via a bundle standing material 6 is hung vertically on the uppermost slab 9 at the bottom of the bundle 4 to form a double floor. Support. Here, the elastic container 7 is made of rubber, the granular cushioning material 8 is burnt sand, and the bundling material 6 is a washer.
A screw 5 is provided at the lower end of the bundle 4, and the bundle standing member 6 and the bundle 4 are screwed together. Since the sand grains are dry, the baked sand can absorb the impact with high efficiency by moving freely.

As shown in FIG. 2, a hollow 11 is provided horizontally on the outer circumference of the elastic container 7 if necessary, and a reinforcing annular member 12 is fitted into the hollow 11. Since the deformation of the elastic container 7 is suppressed by the reinforcing annular member 12, the elastic container 7 can be used stably for a longer period of time. Further, due to the presence of the depressions 11, when the granular cushioning material 8 in the elastic container 7 moves when receiving a load, resistance is generated between the depressions 11 and the shock absorbing energy.

As shown in FIG. 3, an elastic support member 10 is provided laterally between the bottom surface of the elastic container 7 and the lowermost slab upper surface 9. In FIG. 3, the elastic supporting member 10 is composed of a leaf spring curved in an arch shape, and four elastic springs 7 are assembled in a so-called cross girder shape and the elastic container 7 is vertically provided at the center. The leaf springs are arranged so as to be orthogonal to each other so that the leaf springs are stable against horizontal fluctuations of the elastic container 7. As a result, it is possible to handle a wider load than when the elastic container 7 alone is used. The rebound is absorbed by the granular cushioning material contained in the elastic container 7, as in the case where the elastic support member 10 is not provided horizontally.

[0019]

【The invention's effect】

1) When the anti-vibration floor according to the present invention is used, shock absorption characteristics such as vibration and sound are enhanced, rebound is suppressed, and stable effects can be obtained for a long period of time. That is, since the elastic container swells when a load is applied, the elastic container receives the load in the shearing direction, and the shock absorption characteristics are improved. The particles of the granular cushioning material existing in the elastic container move in the container, and the length and diameter of the entire container are repeatedly changed, whereby the energy of vibration shock can be absorbed. Improved absorption characteristics and suppressed rebound. 2) Since the flexure of the elastic container is suppressed and the load is dispersed due to the presence of the granular cushioning material, the fatigue of the elastic container is relieved and the elastic container can be used stably for a long period of time. Further, if necessary, if an elastic supporting member is provided laterally between the bottom surface of the elastic container and the uppermost slab upper surface, a wider load can be accommodated. The rebound at this time is also absorbed by the granular cushioning material. 3) If one or a plurality of hollows are provided horizontally on the outer circumference of the elastic container and a reinforcing annular member is fitted into the hollow, deformation of the elastic container can be suppressed and the elastic container can be used stably for a longer period of time. As a result, a resistance is generated between the granular cushioning material existing in the elastic container when the load is applied and the granular cushioning material, and this also contributes to improving the cushioning absorption characteristics. 4) If a plate-like elastic body such as spring steel is provided on the lower side of the elastic container, the vibration can be further absorbed.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a granular cushioning material of the present invention.

FIG. 2 is a front view showing an embodiment of another granular cushioning material of the present invention.

FIG. 3 is a perspective view showing an embodiment of another granular cushioning material of the present invention.

FIG. 4 is a front view showing a conventional vibration isolation mechanism.

[Explanation of symbols]

 1 Top Surface Finishing Material 2 Panel That Can Be Perforated 3 Floor Joint 4 Bundle 5 Screw 6 Bundle Material 7 Elastic Container 8 Granular Buffer Material 9 Slab Upper Surface 10 Elastic Support Member 11 Recess 12 Reinforcing Annular Member 13 Spring 14 Bundle Standing material 15 Rubber plate

Claims (5)

[Claims] 1. A double floor using an OA floor composed of a floor finishing plate on the uppermost surface and a panel capable of perforating, and a floor joint is provided in the hole formed in the panel capable of perforating. , A bundle is erected downward from the floor joint, and an elastic container in which a granular cushioning material is enclosed is hung at a lower portion of the bundle on a slab upper surface of the lowermost portion through a bunching material. An anti-vibration floor using a granular cushioning material, wherein an elastic support member is provided between the bottom surface of the elastic container and the upper surface of the slab. 2. The vibration-isolated floor using the granular cushioning material according to claim 1, wherein the granular cushioning material is calcined sand, and the elastic container is made of rubber. 3. The bundling member comprises a nut and a washer screwed together with a screw provided at the lower end of the bundle, and the washer seals the upper portion of the elastic container. Anti-vibration floor using granular cushioning material. 4. The anti-vibration floor using the granular cushioning material according to claim 1, wherein the elastic container has an outer periphery surrounded by a single or a plurality of reinforcing annular members. 5. The granular cushioning material according to claim 1, wherein the elastic supporting member provided laterally between the elastic container bottom surface and the slab upper surface is one or more or a plurality of plate-like elastic supporting members intersecting with each other. Anti-vibration floor using.