JP2005226329A - Floor panel structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor panel structure capable of improving heavy floor impulsive sound performance, by imparting the vibration control effect by reinforcing the under surface side, without complicating a layer structure of floor panels. <P>SOLUTION: A vibration control support tool 10 is arranged on the upper surface side of a concrete slab, and a plurality of floor panels P are supported via the vibration control support tool. The floor panels P include a backing material P1 and a surface material P2. A reinforcing material 11 composed of a woody square bar is fixed to the under surface side of the backing material P1. This reinforcing material 11 can be used by two pieces, and is respectively set to the predetermined length to the edge length of the backing material P1, and is arranged so as to cross with each other. Impedance of the floor panels is enhanced by a fixation of the reinforcing material, and the heavy floor impulsive sound performance is improved by reducing a vibration speed when excitation force is applied from above. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a floor panel structure, and more particularly, to a floor panel structure of a dry sound insulation double floor in which a floor panel is laid on an upper surface side of a concrete slab or the like via a vibration isolation support.

  2. Description of the Related Art Conventionally, there is known a double floor in which floor panels are arranged so as to form a certain space on the upper surface side of a casing made of concrete slab or the like. In this double floor, the space is formed by arranging anti-vibration supports on the slab at predetermined intervals, and by supporting the floor panels on these anti-vibration supports, and vibration transmission is transmitted by the anti-vibration supports. It is absorbed at a certain level.

  In the double floor, when an impact such as walking is applied to the floor panel, the floor panel is deformed, and the generated vibration energy is propagated to the slab and radiated as sound to the downstairs. As a floor panel for reducing the heavy floor impact sound, (1) a type in which a surface material such as flooring is bonded to the upper surface of a substantially rectangular base material made of a particle board or the like via a plywood, or (2) A type in which a sheet-like damping material is interposed between a base material and a plywood is known.

  However, in the double floor structure using the floor panel of the type (1) described above, the performance of heavy floor impact sound is not good due to the resonance phenomenon, and noise transmission to the downstairs cannot be sufficiently suppressed. is there. In this respect, the floor panel of type (2) can obtain a vibration damping effect compared with the floor panel of (1), so that it can improve the performance of heavy floor impact sound, but the laminated structure is complicated. In addition, since the damping material itself usually has a weight of several tens of kilograms per square meter, the entire floor panel is very heavy, and the processing time and manufacturing cost are reduced. There is an inconvenience of rising.

[Object of invention]
The present invention has been devised by paying attention to such inconveniences, and the object of the present invention is to increase the impedance and provide a damping effect without complicating the layer structure of the floor panel. The object is to provide a floor panel structure capable of improving impact sound performance.

  To achieve the above object, the present invention provides a double-floor floor panel structure that is supported on a slab via an anti-vibration support, and at least one bar-shaped reinforcing material is provided on the lower surface side of the floor panel. The structure is adopted. Here, the rod shape is not literally a strict meaning, and has a shape extending in a specific direction, for example, linearly or curvedly. Used as a concept to include.

  In the present invention, a plurality of the reinforcing materials are provided, and it is preferable that these reinforcing materials are provided so as to cross each other in substantially the same plane.

  The floor panel includes a base material and a surface material having a substantially rectangular shape, and the reinforcing material has a length of about 2/3 or more of a side length when each side length of the base material is substantially equal. It is preferable to provide it. When the base material is a rectangle having a short side and a long side, the length of the reinforcing material may be 2/3 or more of the short side length.

  Furthermore, the reinforcing material can be configured by any or any combination selected from a wooden square, a resin square, a cross-sectional substantially L-shaped material or a substantially C-shaped material made of metal or resin.

  Further, the height of the reinforcing material is larger than the thickness of the base material.

According to the present invention, by providing the reinforcing material on the lower surface side of the floor panel, the impedance can be increased without complicating the structure of the floor panel itself. Therefore, since the excitation force F = impedance Z · vibration speed V, when the excitation force is constant, the vibration speed generated can be reduced by attaching the reinforcing material, and the floor panel has an impact such as walking. Even if it is added, vibration energy generated thereby will not easily propagate to a slab or other housing, thereby improving the weight floor impact sound performance. Since the reinforcing material has a so-called external structure on the lower surface of the floor panel, it is extremely easy to manufacture.
In addition, the planar shape is determined by the arrangement in which a plurality of reinforcing materials are crossed, the configuration in which the length of one side of the base material is about 2/3 or more, or the configuration in which the height is higher than the thickness of the base material. The reinforcement in the floor panel provided can be performed effectively. Furthermore, the configuration in which the reinforcing material is selected from a square member, a mold member, and the like makes it possible to expand the degree of freedom in design while maintaining a certain reinforcing effect.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a side view of a double floor according to the present embodiment, and FIG. 2 shows a plan view thereof. FIG. 3 is a schematic perspective view of the floor panel as viewed from the back side. In these figures, a floor panel P is disposed at a predetermined height position that forms a space C on the upper surface side of a concrete slab S, thereby forming a double floor. The floor panel P is supported on the corner lower surface side via a plurality of anti-vibration supports 10 installed on the slab S.

  Although the floor panel P is not particularly limited, in the present embodiment, the base material P1 made of particle board or the like having a plate shape of a substantially square shape, and the upper surface thereof is thinner than the thickness of the base plate P1. The reinforcing material 11 is fixed to the lower surface side of the base material P1. The multi-layer structure is composed of a surface material P2 made of flooring or the like. The wall panel W side end of the floor panel P is arranged in a state where a gap is secured with respect to the wall surface W and the baseboard H, and thereby, solid propagation to the wall surface W is kept from occurring.

  The reinforcing material 11 is composed of a wooden square material, a resin square material, a substantially L-shaped material or a substantially C-shaped material made of metal or resin, or any combination thereof. In the present embodiment, two wooden square bars are used. The reinforcing material 11 has a length of about 2/3 or more of one side length of the base material P1 and a height larger than the thickness of the base material P1. Fixing the wooden square material to the base material P1 may be performed by using a fastener such as a nail or a screw in addition to bonding using an adhesive. As shown in FIG. 3, the reinforcing members 11 in the present embodiment are arranged in a crossed state in substantially the same plane in the diagonal direction of the base material P1. Therefore, the crossing region of the two reinforcing members 11 is formed with a not-shown groove for avoiding mutual interference to have a substantially cross-phase notched structure. In the case where a joint structure using such fitting between grooves is not adopted, one reinforcing member 11 is divided into two in the length direction and arranged with a certain gap, and the other is placed in this gap. This can be dealt with by allowing the central portion of the single reinforcing member 11 to pass. In this case, the length of each of the divided reinforcing members 11 is not strictly 2/3 or more of the length of one side of the base material P1, but in this case, in the gap The total straight line length including the middle part of the other reinforcing material 11 located at 2 is regarded as 2/3 or more.

  As shown in FIGS. 4 and 5, the anti-vibration support 10 is located on the lower surface side of the floor panel P and on the lower surface side of the center portion of the receiving plate 20. The anti-vibration elastic body 13 that supports the support leg 12, and the weight member 14 that is mounted on the outer peripheral side of the anti-vibration elastic body 13 are configured.

  The support leg 12 includes a nut member 12A whose axis is directed in the vertical direction and a bolt 12B that is screwed in from the upper end side of the nut member 12A and can be advanced and retracted in the vertical direction. The upper end of the bolt 12B is not illustrated. It is fixed to the backing plate 20 via a nut.

  The anti-vibration elastic body 13 is made of rubber, and the anti-vibration elastic body 13 is formed integrally with the inner peripheral elastic portion 21 having a substantially disk shape and the inner peripheral elastic portion 21. It is comprised by the part 21 and the substantially cylindrical outer periphery elastic part 22 provided on the substantially concentric circle. The inner peripheral elastic portion 21 supports the nut member 12A of the support leg 12 at the upper center, and the lower surface is provided at a height that forms a space C1 with the concrete slab S. A region for receiving a shearing force is formed. The inner peripheral elastic portion 21 includes a two-stage tapered surface portion that gradually decreases in diameter as it goes upward around the nut member 12A, and a tapered surface portion that also has an inclined surface that similarly decreases in diameter on the outer peripheral side of the lower surface. Thus, the support stability of the nut member 12A is ensured, and at the same time, a certain resistance is provided when the nut member 12A is deformed in the shearing direction by an impact applied from above. .

  The outer peripheral elastic portion 22 is made of a material whose hardness is relatively larger than the hardness of the inner peripheral elastic portion 21. The outer peripheral elastic portion 22 is provided at a lower position on the lower surface side than the lower surface of the inner peripheral elastic portion 21 to be an installation portion on the slab S. On the outer peripheral surface of the outer peripheral elastic portion 22, a step portion 25 is formed at an intermediate portion in the vertical direction, and the upper outer diameter of the outer peripheral elastic portion 22 is made smaller than the lower outer diameter by the step portion 25. . On the installation portion side of the outer peripheral elastic portion 22, a passage 29 is formed for communicating the space C1 in and out. The passage 29 allows air to escape in the space C1 when the inner peripheral elastic portion 21 is deformed in the shear direction. On the other hand, when returning to the original position, outside air is introduced to prevent negative pressure in the space C1.

  The weight member 14 provided on the outer periphery of the outer peripheral elastic portion 22 is made of metal or resin. The weight member 14 has a substantially cylindrical shape, and the lower end thereof is kept seated on the stepped portion 25. Thus, even when an impact is applied to the whole vibration-proof support 10 from above, the vibration-proof member 14 The integrity of the elastic body 13 and the weight member 14 is reliably maintained.

  Next, in order to confirm the effect according to the present invention, the following examples are shown together with comparative examples.

[Example]
Floor panel P: 900 mm long, 900 mm wide
(1) Base material P1: particle board, thickness 20 mm
(2) Surface material P2: Flooring material, thickness 12 mm
Reinforcement material: Two wooden squares, diagonal cross arrangement, substantially cross-phase joint structure
Height: 45mm
Width: 35mm
Length: 1000mm
Anti-vibration support: 1 each floor panel corner

[Comparative example]
The floor panel is formed by laminating the surface material P2 on the same base material P1 as in the example, and does not have a reinforcing material. Moreover, the support form by the vibration isolating support was the same as that of the example.

  FIG. 6 shows the results of the example and the comparative example. As is apparent from these charts, the floor impact sound level at 63 Hz, which is the determining frequency of the heavy floor impact sound performance, was 76.6 dB in the present invention, whereas the comparative example was 78.1 dB. Thereby, it is understood that the structure of the present invention is superior to the comparative example, and the heavy floor impact sound performance is improved.

The best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this.
That is, the present invention has been particularly shown and described with respect to particular embodiments, but is not limited to the embodiments described above without departing from the scope and spirit of the present invention. Various modifications may be made by those skilled in the art in terms of position, orientation, and other detailed configurations.
Therefore, the description limited to the shape disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description in the name of the member excluding a part or all of the limitation is included in the present invention.

  For example, in the above-described embodiment, the case where the cross placement is performed using the two reinforcing members 11 is illustrated and described, but at least one reinforcing member 11 is sufficient. In this case, the reinforcing material can be arranged along one diagonal direction of the base material P1 or arranged in a posture that is substantially parallel to one side of the base material in the central portion of the base material. Further, the reinforcing material 11 may be three or more. In short, in the present invention, it is only necessary to adopt a configuration that makes it difficult to vibrate by applying reinforcement on the lower surface side of the floor panel.

The schematic sectional side view of the double floor which concerns on this embodiment. FIG. 2 is a schematic plan view of FIG. 1. The schematic perspective view which shows the state which reversed the floor panel. The schematic perspective view which expands and shows a part of FIG. The partial longitudinal cross-sectional view of FIG. The diagram which shows the heavy floor impact sound experimental result by the said Example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Anti-vibration support tool, 11 ... Reinforcement material, C ... Space, P ... Floor panel, P1 ... Base material, P2 ... Surface material, S ... Slab

Claims (5)

A floor panel structure of a double floor supported on a slab via a vibration isolating support, wherein at least one bar-like reinforcing material is provided on the lower surface side of the floor panel. 2. The floor panel structure according to claim 1, wherein a plurality of the reinforcing materials are provided, and the reinforcing materials intersect with each other in substantially the same plane. The floor panel includes a base material and a surface material having a substantially square shape, and the reinforcing material is provided with a length of about 2/3 or more of one side length of the base material. The floor panel structure according to 1 or 2. 4. The reinforcing material according to claim 1, 2, or 3, wherein the reinforcing material is any one or any combination selected from a wooden square, a resin square, a cross-sectional substantially L-shaped material or a substantially C-shaped material made of metal or resin. Floor panel structure. The floor panel structure according to any one of claims 1 to 4, wherein a height of the reinforcing material is larger than a thickness of the base material.

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