JP2583623B2 - Soundproof double floor structure and floor panel - Google Patents
Soundproof double floor structure and floor panelInfo
- Publication number
- JP2583623B2 JP2583623B2 JP1315677A JP31567789A JP2583623B2 JP 2583623 B2 JP2583623 B2 JP 2583623B2 JP 1315677 A JP1315677 A JP 1315677A JP 31567789 A JP31567789 A JP 31567789A JP 2583623 B2 JP2583623 B2 JP 2583623B2
- Authority
- JP
- Japan
- Prior art keywords
- floor
- floor panel
- box
- underfloor space
- height
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、防音二重床構造および床パネルに関し、詳
しくはコンクリート床スラブ等からなる床下地上に複数
の床パネル材が適宜高さの支持脚体を介して並置されて
なる二重床の防音構造、及び該二重床の防音構造に用い
られる床パネルに関する。Description: TECHNICAL FIELD The present invention relates to a soundproof double floor structure and a floor panel, and more particularly, to a floor base made of a concrete floor slab or the like in which a plurality of floor panel materials are supported at an appropriate height. The present invention relates to a double floor soundproof structure that is juxtaposed via legs, and a floor panel used for the double floor soundproof structure.
（従来の技術） 上記二重床或いは床パネルとしては、主として中高層
のビルやマンション等の床に採用されており、床パネル
材の下面に該床パネル材を支持するレベル調節可能な複
数の支持脚体を備えた床パネルがコンクリート床スラブ
等からなる床下地上に上記支持脚体を介して並置される
ことになり、上記床パネル材の下方に床下空間が形成さ
れる置床構造及び床パネルが知られている。(Prior Art) The double floor or floor panel is mainly used for floors of middle- and high-rise buildings and condominiums, and a plurality of adjustable-level supports for supporting the floor panel material on the lower surface of the floor panel material. A floor panel with legs is juxtaposed on a floor base made of a concrete floor slab or the like via the support legs, and a floor structure and a floor panel in which an underfloor space is formed below the floor panel material. Are known.
そして、このような二重床構造や床パネルは、床下地
上面の不陸を支持脚体により吸収できるため床下地を平
滑化する手間が不要であるという利点、及び床パネル材
の下方に床下空間が水平方向に連続しているため床下地
上面での配管、配線工事が容易であるという利点を有し
ているので、上記の中高層建築物で広く採用されてい
る。And such a double floor structure and floor panels have the advantage that the unevenness of the upper surface of the floor substrate can be absorbed by the supporting legs, so that there is no need for the trouble of smoothing the floor substrate, and the underfloor below the floor panel material. Since the space is continuous in the horizontal direction, it has an advantage that piping and wiring work on the floor base upper surface is easy, so that it is widely used in the above-mentioned middle and high-rise buildings.
（発明が解決しようとする課題） しかるに、上記二重床構造や床パネルにおける床パネ
ル材の上面に床衝撃力が作用し、該床パネル材の振動に
よって床下空間の空気が振動した場合、該床下空間が水
平方向に連続しているため、床下空間の空気振動は水平
方向に拡散して広い範囲に伝達される。(Problems to be Solved by the Invention) However, when a floor impact force acts on the upper surface of the floor panel material in the double floor structure or the floor panel, and the floor panel material vibrates, the air in the underfloor space vibrates. Since the underfloor space is continuous in the horizontal direction, the air vibration in the underfloor space is diffused in the horizontal direction and transmitted to a wide range.
このため、上記の二重床構造や床パネルにおいては、
階上で発生した床衝撃音が階下へ大きな衝撃音となって
伝達されることになり、防音性能が十分でないという問
題がある。For this reason, in the above-mentioned double floor structure and floor panel,
The floor impact sound generated on the floor is transmitted as a loud impact sound downstairs, and there is a problem that the soundproof performance is not sufficient.
上記に鑑み、本発明は、防音性に優れた二重床構造及
び床パネルを簡易に得られるようにすることを目的とす
る。In view of the above, an object of the present invention is to make it possible to easily obtain a double floor structure and floor panels excellent in soundproofing.
（課題を解決するための手段） 前記の目的を達成するため、請求項（１）及び（２）
の発明は、床パネル材の下面に所定高さを有し下方が開
口した箱状体又は筒状体を設けて床下空間を仕切ること
により該床下空間での空気振動の拡散を防止するもので
ある。(Means for Solving the Problems) In order to achieve the above object, claims (1) and (2)
The invention of the invention is to prevent diffusion of air vibration in the underfloor space by providing a box-like body or a tubular body having a predetermined height on the lower surface of the floor panel material and having an opening at the bottom to partition the underfloor space. is there.
具体的に請求項（１）の発生が講じた解決手段は、コ
ンクリート床スラブ等からなる床下地上に複数の床パネ
ル材がレベル調節可能な複数の支持脚体を介して並置さ
れ、上記床パネル材の下方に床下空間が形成されてなる
防音二重床構造を対象とし、上記床パネル材の下面に、
上記床下空間高さの３分の１以上で且つ該床下空間高さ
より低い高さを有し下方が開口している箱状体又は筒状
体が設けられている構成とするものである。Specifically, the solution taken in claim (1) is that a plurality of floor panel materials are juxtaposed on a floor base made of a concrete floor slab or the like via a plurality of support legs whose level can be adjusted. Targeting a soundproof double floor structure in which an underfloor space is formed below the material, on the lower surface of the floor panel material,
A box-like body or a tubular body having a height of at least one-third of the height of the underfloor space and lower than the height of the underfloor space and having an opening at the bottom is provided.
また、請求項（２）の発明が講じた解決手段は、床パ
ネル材の下面に該床パネル材を支持する複数の支持脚体
を備えてなり、コンクリート床スラブ等からなる床下地
上に上記床パネル材の下方に床下空間が形成されるよう
に上記支持脚体を介して並置される床パネルを対象と
し、上記床パネル材の下面に上記床下空間高さの３分の
１以上で且つ該床下空間高さより低い高さを有し下方が
開口している箱状体又は筒状体が設けられている構成と
するものである。Further, a solution taken by the invention of claim (2) is that a plurality of support legs for supporting the floor panel material are provided on a lower surface of the floor panel material, and the floor is formed on a floor base made of a concrete floor slab or the like. It is intended for a floor panel juxtaposed via the support legs so that an underfloor space is formed below the panel material, and the lower surface of the floor panel material is at least one-third of the underfloor space height and A box-like body or a tubular body having a height lower than the height of the underfloor space and opening downward is provided.
（作用） 請求項（１）及び（２）の構成により、床パネル材の
下面に、床下空間高さの３分の１以上で且つ該床下空間
高さより低い高さを有し下方が開口している箱状体又は
筒状体が設けられているため、床下空間での空気振動は
箱状体又は筒状体の壁部によって反射されるので、空気
振動は床下空間を水平方向へ拡散し難く、また箱状体又
は筒状体の内部における空気振動は壁部によって反射を
繰返すことになり、振動エネルギーを消耗して短時間で
減衰する。この場合、箱状体又は筒状体はその高さが床
下空間高さより低く且つ下方が開口しているため、床パ
ネル材の上面に床パネル材を曲げ変形させるような大き
な床衝撃力が加わっても、箱状体又は筒状体の内部空気
が閉空間となることがなく太鼓現象が生じない。(Operation) According to the configuration of claims (1) and (2), the lower surface of the floor panel material has a height that is at least one-third of the height of the underfloor space and lower than the height of the underfloor space, and the lower part is open. Because the box-shaped or cylindrical body is provided, the air vibration in the underfloor space is reflected by the wall of the box-shaped or cylindrical body, and the air vibration diffuses in the underfloor space in the horizontal direction. It is difficult, and the air vibration inside the box-shaped body or the cylindrical body is repeatedly reflected by the wall, and the vibration energy is consumed and attenuated in a short time. In this case, since the height of the box-shaped body or the cylindrical body is lower than the height of the underfloor space and the lower part is open, a large floor impact force is applied to the upper surface of the floor panel material to bend the floor panel material. However, the inside air of the box-shaped body or the cylindrical body does not become a closed space, and the drum phenomenon does not occur.
また、箱状体或いは筒状体の下端と床下地上面との間
に空間が形成されるため、床パネル材に加わる床衝撃力
が直接床下地に伝播されないと共に、箱状体や筒状体が
床下地上の配管や配線の邪魔になることがない。Further, since a space is formed between the lower end of the box-shaped body or the cylindrical body and the upper surface of the floor base, the floor impact force applied to the floor panel material is not directly transmitted to the floor base, and the box-shaped body or the cylindrical body is not formed. Does not interfere with the piping and wiring on the floor substrate.
さらに、床パネル材の下面に箱状体や筒状体が設けら
れているため、床パネル材の剛性が向上するので、床衝
撃力を受けたときの床パネル材の曲げ変形量が小さい。Further, since the box-shaped body or the tubular body is provided on the lower surface of the floor panel material, the rigidity of the floor panel material is improved, and the amount of bending deformation of the floor panel material when subjected to a floor impact force is small.
（実施例） 以下、本発明の実施例を図面に基づいて説明する。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
第１図及び第２図は本発明の一実施例に係る防音二重
床構造Ａ及び床パネルＢを示し、該防音二重床構造Ａ
は、コンクリート床スラブ等からなる床下地１の上に複
数の矩形状の床パネル材２が複数の支持脚体３を介して
並置され、床パネル材２の上面に捨張り材４を介して床
仕上げ材５が敷設されており、床下地１と床パネル材２
との間に床下空間６が形成されてなるものであり、ま
た、上記床パネルＢは床パネル材２の下面に支持脚体３
が設けられてなるものである。1 and 2 show a soundproof double floor structure A and a floor panel B according to one embodiment of the present invention.
A plurality of rectangular floor panel members 2 are juxtaposed via a plurality of support legs 3 on a floor base 1 made of a concrete floor slab or the like, and are disposed on the upper surface of the floor panel members 2 via a discarding member 4. A floor finishing material 5 is laid, and a floor substrate 1 and a floor panel material 2 are provided.
A floor space B is formed between the floor panel B and the floor panel B.
Is provided.
床仕上げ材５としては木質フロア材やカーペット材等
を適宜使用でき、また、捨張り材４としては合板等を適
宜使用できる。As the floor finishing material 5, a wooden floor material, a carpet material, or the like can be used as appropriate, and as the discard material 4, plywood or the like can be used as appropriate.
床パネル材２としては、合板やパーティクルボード等
の木質板、木質セメント板或いは金属製成形パネル等を
用いることができ、その上に敷設される捨張り材４、床
仕上げ材５及び床上荷重を支持できる程度の剛性を有し
ておれば適宜選択可能である。As the floor panel material 2, a wood board such as a plywood or a particle board, a wood cement board, a metal molded panel, or the like can be used, and the disposing material 4, the floor finishing material 5, and the load on the floor to be laid thereon are used. It can be appropriately selected as long as it has such a rigidity that it can be supported.
支持脚体３は、床下地１の上面に載置される円錐台状
の弾性体3aと、該弾性体3aに立設された高さ調節用の調
節ボルト3bと、床パネル材２に埋設され調節ボルト3bが
螺着されたナット3bとを有し、調節ボル3bを回転するこ
とによりレベル調節が可能である。The support leg 3 is a truncated cone-shaped elastic body 3a placed on the upper surface of the floor substrate 1, an adjusting bolt 3b erected on the elastic body 3a for height adjustment, and embedded in the floor panel material 2. And a nut 3b screwed with an adjusting bolt 3b, and the level can be adjusted by rotating the adjusting bolt 3b.
尚、支持脚体３は、床パネル材２と必ずしも一体でな
くてもよく、床パネル材２を鋼製根太や木材ブロックを
介して上記支持脚体３で支持させた構造であってもよ
い。In addition, the support leg 3 is not necessarily integral with the floor panel material 2, and may have a structure in which the floor panel material 2 is supported by the support leg 3 via a steel joist or a wood block. .
本実施例の特徴として、背が低く且つ下方が開口して
いる有底の箱状体７が、その底部7aにおいて床パネル材
２の下面にビス止めされている。As a feature of this embodiment, a bottomed box-shaped body 7 having a short height and an open bottom is screwed to the lower surface of the floor panel material 2 at the bottom 7a.
箱状体７の材質としては、合成樹脂、厚紙、木質材、
金属材、無機質材、木質セメント複合材、繊維板や繊維
マットの繊維質材料等を適宜選択して用いることがで
き、床下空間６での空気振動を反射して拡散を防止し得
る程度の面密度を有しておればよい。箱状体７の床パネ
ル材２への取付強度については、床パネル材２に加わる
衝撃力によって箱状体７が脱落しない程度でよく、取付
方法についても上記のビス止めのほか接着剤による接着
等適宜のものでよい。Examples of the material of the box 7 include synthetic resin, cardboard, wood,
A metal material, an inorganic material, a wood-cement composite material, a fibrous material such as a fiber board or a fiber mat can be appropriately selected and used, and a surface capable of reflecting air vibration in the underfloor space 6 and preventing diffusion. What is necessary is just to have density. The mounting strength of the box-shaped body 7 to the floor panel material 2 may be such that the box-shaped body 7 does not fall off due to the impact force applied to the floor panel material 2. And so on.
箱状体７の横断面の形状としては四角形或いは円形等
適宜のものでよいが、箱状体７の高さとしては次のよう
に設定することが好ましい。The shape of the cross section of the box-shaped body 7 may be an appropriate one such as a square or a circle, but the height of the box-shaped body 7 is preferably set as follows.
すなわち、箱状体７の高さの上限としては、床面に衝
撃力が加わり、床パネル材２が撓んでも箱状体７の下端
が床下地１の上面に当接しない程度の空間例えば10mm以
上の空間が、箱状体７下端と床下地上面１との間に形成
されるようにすることが好ましい。また、床下地１上に
配管や配線等が設けられる場合には、これらの配管や配
線に箱状体７の下端が当接しないよう、箱状体７下端と
床下地上面１との間に20〜50mm程度の空間を設けておく
ことが好ましい。That is, the upper limit of the height of the box 7 is a space such that the lower end of the box 7 does not come into contact with the upper surface of the floor substrate 1 even when an impact force is applied to the floor surface and the floor panel material 2 is bent. It is preferable that a space of 10 mm or more is formed between the lower end of the box-shaped body 7 and the floor base upper surface 1. When pipes, wiring, and the like are provided on the floor base 1, the lower end of the box 7 and the floor base upper surface 1 are placed between the lower end of the box 7 so that the lower end of the box 7 does not abut on these pipes and wiring. It is preferable to provide a space of about 20 to 50 mm.
また、箱状体７の高さの下限としては床下空間６の高
さの３分の１以上であることが好ましい。その理由は以
下の通りである。すなわち、第５図は、床下空間６の高
さが100mmの場合において、箱状体７下端と床下地１上
面との間隔であるクリアランスと軽量床衝撃音レベルと
の関係を示したものであって、同図から明らかなよう
に、クリアランスが100mmから67mmまでの間ではクリア
ランスが小さくなるにつれて床衝撃音レベルのLL値も急
激に小さくなるためであり、また、クリアランスを67mm
より小さくすると上記LL値が55以下になるためである。Further, the lower limit of the height of the box-shaped body 7 is preferably not less than one third of the height of the underfloor space 6. The reason is as follows. That is, FIG. 5 shows the relationship between the clearance, which is the distance between the lower end of the box 7 and the upper surface of the floor substrate 1, and the light floor impact sound level when the height of the underfloor space 6 is 100 mm. As is clear from the figure, when the clearance is between 100 mm and 67 mm, the LL value of the floor impact sound level sharply decreases as the clearance decreases, and the clearance is set to 67 mm.
This is because if the value is smaller, the LL value becomes 55 or less.
また、クリアランスを67mmより小さくするとLL値が55
以下になる理由については次のように解釈される。すな
わち、第２図に示すように、床下空間６のうちの３分の
１以上の上層部を箱状体７の壁部7bで仕切ると、床パネ
ル材２の上面に矢印（イ）で示すように床衝撃力が加わ
っても、床衝撃力に伴う空気振動は箱状体７の壁部7bに
反射される。このため、箱状体７の内部で発生した空気
振動が矢印（ロ）で示すように箱状体７の外部へ脱出し
たり、或いは箱状体７の外部で発生した空気振動が矢印
（ハ）で示すように箱状体７の内部へ進入したりし難い
ので、空気振動が床下空間６を水平方向へ拡散し難くな
るためである。Also, if the clearance is smaller than 67 mm, the LL value will be 55
The following reasons are interpreted as follows. That is, as shown in FIG. 2, when an upper layer portion of one-third or more of the underfloor space 6 is partitioned by the wall portion 7b of the box-shaped body 7, an arrow (a) is shown on the upper surface of the floor panel material 2. Even if the floor impact force is applied as described above, the air vibration caused by the floor impact force is reflected on the wall 7b of the box-shaped body 7. For this reason, the air vibration generated inside the box-shaped body 7 escapes to the outside of the box-shaped body 7 as shown by the arrow (b), or the air vibration generated outside the box-shaped body 7 changes to the arrow (c). ), It is difficult to enter the inside of the box-shaped body 7, so that it is difficult for the air vibration to diffuse in the underfloor space 6 in the horizontal direction.
なお、上記のように床下空間６のうちの３分の１以上
の上層部を仕切ると防音効果は向上するが、特に床下空
間６のうちの２分の１の上層部を仕切ると防音効果は著
しく向上する。In addition, as described above, the soundproofing effect is improved by partitioning one-third or more of the upper part of the underfloor space 6, but the soundproofing effect is particularly improved by partitioning the upper part of the half of the underfloor space 6. Significantly improved.
以上の如く、床パネル材２の下面に箱状体７が設けら
れているため、床下空間６の空気振動は水平方向に拡散
しようとする際、箱状体７の壁部7aによって反射される
が、空気振動は壁部7aによって反射される毎に振動エネ
ルギーを消耗しながら減衰するので、床下空間６の騒音
は速やかに低減する。従って、箱状体７の材質として、
金属板等のように音響を反射しやすい高密度材料を用い
ると、床下空間６の空気振動が横方向に透過拡散するこ
とがなくなり、騒音を一層速やかに低減させることがで
きる。As described above, since the box-like body 7 is provided on the lower surface of the floor panel material 2, the air vibration of the underfloor space 6 is reflected by the wall 7a of the box-like body 7 when trying to diffuse in the horizontal direction. However, the air vibration is attenuated while consuming the vibration energy each time it is reflected by the wall 7a, so that the noise in the underfloor space 6 is reduced quickly. Therefore, as a material of the box-like body 7,
If a high-density material that easily reflects sound, such as a metal plate, is used, the air vibration in the underfloor space 6 will not be transmitted and diffused in the lateral direction, and noise can be reduced more quickly.
箱状体７の横断面の大きさとしては次のように設定す
ることが好ましい。すなわち、床パネル材２と同一若し
くはこれより小さいものであれば特に限定されるもので
はないが、床下空間６における空気振動の拡散範囲を小
さくするため、横断面が正方形の場合には900mm×900mm
程度以下の大きさが好ましい。The size of the cross section of the box-shaped body 7 is preferably set as follows. That is, there is no particular limitation as long as it is the same as or smaller than the floor panel material 2. However, in order to reduce the diffusion range of the air vibration in the underfloor space 6, when the cross section is square, 900 mm × 900 mm
It is preferable that the size is not more than about.
また、箱状体７の横断面を450mm×450mm程度以下の正
方形にしておくと、箱状体７の壁部7aが空気振動を効果
的に反射すると共に、125〜500Hzの空気振動に対する反
射減衰が速やかに行われる。従って、このような大きさ
の横断面にすると、空気振動の拡散が効果的に防止され
ると共に、壁部7bでの反射による緩衝作用によって吸音
されるので、床衝撃音を効果的に減衰させることができ
る。If the cross section of the box 7 is made to be a square of about 450 mm × 450 mm or less, the wall 7 a of the box 7 effectively reflects the air vibration, and the reflection attenuation for the air vibration of 125 to 500 Hz. Is performed promptly. Therefore, when the cross section has such a size, the diffusion of the air vibration is effectively prevented and the sound is absorbed by the buffering action due to the reflection at the wall 7b, so that the floor impact sound is effectively attenuated. be able to.
第３図は上記実施例の第１変形例を示し、該第１変形
例においては、背が低く無底の筒状体８が２個のＬ字状
の取付部材8aにより床パネル材２の下面に取り付けられ
ている。FIG. 3 shows a first modification of the above-described embodiment. In the first modification, a short, bottomless cylindrical body 8 is fixed to the floor panel material 2 by two L-shaped mounting members 8a. It is attached to the lower surface.
この筒状体８においても横断面の形状は四角形或いは
円形等適宜のものでよく、その材質、高さ及び横断面の
大きさについても箱状体７の場合と同様である。The shape of the cross section of the cylindrical body 8 may also be an appropriate one such as a square or a circle, and the material, height and size of the cross section are the same as those of the box 7.
第４図は上記実施例の第２変形例を示し、該第２変形
例においては、箱状体７の壁部7aの内周面に吸音材９が
配設されている。なお、図示はしていないが、上記第１
変形例における筒状体８の壁部8aの内周面に吸音材９を
配設してもよい。FIG. 4 shows a second modification of the above embodiment. In the second modification, a sound absorbing material 9 is provided on the inner peripheral surface of a wall 7a of a box-shaped body 7. Although not shown, the first
The sound absorbing material 9 may be provided on the inner peripheral surface of the wall 8a of the cylindrical body 8 in the modified example.
吸音材９の材質としては多孔質吸音材が好ましく、具
体的にはグラスウールマット、ロックウールマット、合
成繊維マット、パルプと合成繊維とよりなる混合マット
等の繊維質マット、又は、発泡プラスチック板や発泡無
機質板等の発泡体が好ましい。As the material of the sound absorbing material 9, a porous sound absorbing material is preferable, and specifically, a fibrous mat such as a glass wool mat, a rock wool mat, a synthetic fiber mat, a mixed mat composed of pulp and synthetic fiber, or a foamed plastic plate or the like. Foams such as foamed inorganic plates are preferred.
このように箱状体７の壁部7a或いは筒状体８の壁部8a
の内周面に吸音材９を貼着すると、空気振動が壁部7a或
いは8aの内周面に当たって反射する際に吸音材９により
吸収されるため、床下空間６での騒音は速やかに低減す
る。Thus, the wall 7a of the box 7 or the wall 8a of the cylindrical body 8
When the sound absorbing material 9 is adhered to the inner peripheral surface of the wall, the air vibration is absorbed by the sound absorbing material 9 when the air vibration hits the inner peripheral surface of the wall portion 7a or 8a and is reflected, so that the noise in the underfloor space 6 is promptly reduced. .
なお、吸音材９を壁部7a或いは8aの内周面及び外周面
のいずれか一方或いは両方に設けてもよいが、吸音材９
を上記変形例のように内周面に設けると、箱状体７或い
は筒状体８の内部空間における空気振動の反射を利用し
て効果的に吸音できると共に、取扱時に吸音材９が壁部
7bで保護されて損傷し難いので取扱が容易である。The sound absorbing material 9 may be provided on one or both of the inner peripheral surface and the outer peripheral surface of the wall 7a or 8a.
Is provided on the inner peripheral surface as in the above-described modified example, sound can be effectively absorbed by utilizing the reflection of air vibration in the internal space of the box-shaped body 7 or the cylindrical body 8, and the sound-absorbing material 9 is provided with a wall portion at the time of handling.
It is easy to handle because it is protected by 7b and hardly damaged.
また、前記実施例、第１変形例及び第２変形例に代え
て、１枚の床パネル材２の下面に箱状体７或いは筒状体
８を複数個設けてもよい。Further, instead of the embodiment, the first modified example and the second modified example, a plurality of box-shaped bodies 7 or cylindrical bodies 8 may be provided on the lower surface of one floor panel material 2.
さらに、筒状体８を支持脚体３を囲むように床パネル
材２の下面に取り付けてもよい。このようにすると、支
持脚体３の振動に伴う空気振動の拡散を防止でき、隣接
する支持脚体３への振動伝播を防止できるため防音性能
が向上する。Further, the tubular body 8 may be attached to the lower surface of the floor panel material 2 so as to surround the support leg 3. In this way, it is possible to prevent the diffusion of air vibration due to the vibration of the support leg 3, and to prevent the propagation of the vibration to the adjacent support leg 3, thereby improving the soundproofing performance.
以下、本発明を評価するために行なった軽量床衝撃音
の遮音性能テストについて説明する。Hereinafter, a sound insulation performance test of a lightweight floor impact sound performed for evaluating the present invention will be described.
まず、具体例１として第１図に示す防音二重床構造を
準備した。すなわち、厚さ:30mmのパーティクルボード
よりなる床パネル材２の上に、厚さ:12mmの合板よりな
る捨張り材４を介して厚さ:12mmの木質フロアよりなる
床仕上げ材５が敷設され、床パネル材２の下方に高さ:1
00mmの床下空間６が形成された二重床構造を準備し、床
パネル材２の下面に高さ:80mmの箱状体７を設けた。First, the soundproof double floor structure shown in FIG. That is, a floor finishing material 5 composed of a 12 mm thick wooden floor is laid on a floor panel material 2 composed of a particle board having a thickness of 30 mm via a discarding material 4 composed of plywood having a thickness of 12 mm. , Below the floor panel 2: 1
A double floor structure having a 00 mm underfloor space 6 was prepared, and a box-shaped body 7 having a height of 80 mm was provided on the lower surface of the floor panel material 2.
また、具体例２として具体例１と同様の二重床構造を
準備し、箱状体７の壁部7aの内周面に厚さ:25mm、密度:
32kg/m3、のグラスウールを貼着した。Further, as Example 2, a double floor structure similar to that of Example 1 was prepared, and the inner peripheral surface of the wall 7a of the box 7 had a thickness of 25 mm and a density of 25%.
32 kg / m 3 of glass wool was stuck.
さらに、比較例として第６図に示すような床構造、つ
まり具体例と同様、厚さ:30mmのパーティクルボードよ
りなる床パネル材ａの上に、厚さ:12mmの合板よりなる
捨張り材ｂを介して厚さ:12mmの木質フロアよりなる床
仕上げ材ｃが敷設され、床パネル材ａの下方に高さ:100
mmの床下空間ｄが形成された二重床構造を準備し、床下
地ｅ上に遮音板ｆとして厚さ:25mm、密度:64kg/m3、の
グラスウールマットを略全面に亘って敷設したものを準
備した。Further, as a comparative example, a floor structure as shown in FIG. 6, that is, as in the specific example, on a floor panel material a made of particle board having a thickness of 30 mm, and on a floor material b made of plywood having a thickness of 12 mm, A floor finishing material c made of a wooden floor having a thickness of 12 mm is laid, and a height below the floor panel material a is 100.
A double-floor structure in which an underfloor space d of mm is formed is prepared, and a glass wool mat having a thickness of 25 mm and a density of 64 kg / m 3 is laid almost entirely over a floor base e as a sound insulating plate f. Was prepared.
具体例1,2及び比較例に対する遮音性能テストの結果
は第７図に示す通りであって、比較例の構造によるとJI
S−Ａ−1418による軽量床衝撃音の遮音性能はＬ−60で
あり、少し気になる程度のレベルであったのに対し、本
発明の具体例１の遮音性はＬ−55、具体例２の遮音性は
Ｌ−52という気にならないレベルであって、軽量床衝撃
音に対して具体例のものは比較例のものに比べて約５〜
8dB防音性能が優れていることが確認された。The results of the sound insulation performance test for the specific examples 1, 2 and the comparative example are as shown in FIG. 7, and according to the structure of the comparative example, JI
The sound insulation performance of the light floor impact sound by S-A-1418 was L-60, which was a level of concern. On the other hand, the sound insulation of Example 1 of the present invention was L-55. The sound insulation of No. 2 is L-52, which is a level not to be noticed.
It was confirmed that the 8dB soundproof performance was excellent.
（発明の効果） 以上説明したように、請求項（１）の発明によると、
床パネル材の下面に、床下空間高さの３分の１以上で且
つ該床下空間高さより低い高さを有し下方が開口してい
る箱状体又は筒状体が設けられているため、空気振動は
太鼓現象を生じることなく、箱状体又は筒状体の壁部に
よって反射されつつ減衰するので、床下空間での騒音は
速やかに低減される。また、箱状体又は筒状体の下端と
床下地の上面との間に空間が形成されるため、床パネル
材に加わる床衝撃力が直接床下地に伝わることがないと
共に、上記空間に配管や配線を設けることができるので
配管、配線工事が容易である。(Effect of the Invention) As described above, according to the invention of claim (1),
Since the lower surface of the floor panel material is provided with a box-shaped body or a cylindrical body having a height of not less than one-third of the height of the underfloor space and lower than the height of the underfloor space and having a downward opening, The air vibration is reflected and attenuated by the wall of the box-like body or the cylindrical body without causing the drum phenomenon, so that the noise in the underfloor space is quickly reduced. Further, since a space is formed between the lower end of the box-shaped body or the cylindrical body and the upper surface of the floor substrate, the floor impact force applied to the floor panel material is not directly transmitted to the floor substrate, and the piping is connected to the space. Since piping and wiring can be provided, piping and wiring work is easy.
このため、防音性に優れた防音二重床構造を簡易な施
工方法により得ることができる。For this reason, a soundproof double floor structure excellent in soundproofing can be obtained by a simple construction method.
また、請求項（２）の発明によると、箱状体又は筒状
体が床パネル材下面に一体に設けられているので、上記
のように床パネル材下の空気振動の拡散が低減されると
共に、床パネル材全体の剛性が箱状体等で高められて曲
げ振動の小さい防音性に優れたものである。さらに、上
記箱状体又は筒状体を吸音材と組み合わせて形成してお
くと、吸音材の施工を床パネルの設置と同時にできるの
で吸音材の施工の手間が不要である。Further, according to the invention of claim (2), since the box-like body or the tubular body is integrally provided on the lower surface of the floor panel material, the diffusion of the air vibration below the floor panel material is reduced as described above. At the same time, the rigidity of the entire floor panel material is increased by the box-shaped body or the like, and the floor panel is excellent in soundproofing with small bending vibration. Furthermore, if the box-shaped body or the cylindrical body is formed in combination with a sound absorbing material, the sound absorbing material can be installed at the same time as the floor panel is installed, so that the work of installing the sound absorbing material is unnecessary.
第１図及び第２図は本発明の一実施例である防音二重床
構造及び床パネルを示し、第１図は断面図、第２図は部
分拡大断面図、第３図は上記防音二重床構造の第１変形
例を示す一部切截斜視図、第４図は上記防音二重床構造
の第２変形例を示す部分拡大断面図、第５図はクリアラ
ンスと軽量床衝撃音レベルとの関係を示す図、第６図は
従来構造としての比較例の断面図、第７図は具体例及び
比較例の軽量床衝撃音に対する遮音性能テスト結果を示
す図である。 Ａ…防音二重床構造 Ｂ…床パネル １…床下地 ２…床パネル材 ３…支持脚体 ４…捨張り材 ５…床仕上げ材 ６…床下空間 ７…箱状体 7a…壁部 ８…筒状体 8a…壁部 ９…吸音材1 and 2 show a soundproof double floor structure and a floor panel according to an embodiment of the present invention. FIG. 1 is a sectional view, FIG. 2 is a partially enlarged sectional view, and FIG. FIG. 4 is a partially cutaway perspective view showing a first modified example of the double floor structure, FIG. 4 is a partially enlarged sectional view showing a second modified example of the above soundproof double floor structure, and FIG. FIG. 6 is a cross-sectional view of a comparative example as a conventional structure, and FIG. 7 is a view showing a sound insulation performance test result with respect to a lightweight floor impact sound of the specific example and the comparative example. A: Soundproof double floor structure B: Floor panel 1: Floor base 2: Floor panel material 3: Supporting leg 4: Disposable material 5: Floor finishing material 6: Underfloor space 7: Box-shaped body 7a: Wall section 8 ... Cylindrical body 8a: Wall 9: Sound absorbing material
───────────────────────────────────────────────────── フロントページの続き (72)発明者 宮本 英樹 大阪府大阪市北区中之島２丁目３番18号 大建工業株式会社内 (72)発明者 山口 稔 大阪府大阪市北区中之島２丁目３番18号 大建工業株式会社内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hideki Miyamoto 2-3-18 Nakanoshima, Kita-ku, Osaka-shi, Osaka Daiken Industries Co., Ltd. (72) Inventor Minoru Yamaguchi 2-3-3 Nakanoshima, Kita-ku, Osaka-shi, Osaka No. 18 Daiken Kogyo Co., Ltd.
Claims (2)
に複数の床パネル材がレベル調節可能な複数の支持脚体
を介して並置され、上記床パネル材の下方に床下空間が
形成されてなる防音二重床構造であって、上記床パネル
材の下面に、上記床下空間高さの３分の１以上で且つ該
床下空間高さより低い高さを有し下方が開口している箱
状体又は筒状体が設けられていることを特徴とする防音
二重床構造。1. A soundproofing system comprising a plurality of floor panel members juxtaposed on a floor base made of a concrete floor slab or the like via a plurality of support legs capable of adjusting a level, and an underfloor space formed below the floor panel members. A box-shaped body having a double floor structure and having a height of at least one-third of the underfloor space height and lower than the underfloor space height on the lower surface of the floor panel material, and having a downward opening; A soundproof double floor structure characterized by having a tubular body.
る複数の支持脚体を備えてなり、コンクリート床スラブ
等からなる床下地上に上記床パネル材の下方に床下空間
が形成されるように上記支持脚体を介して並置される床
パネルであって、上記床パネル材の下面に上記床下空間
高さの３分の１以上で且つ該床下空間高さより低い高さ
を有し下方が開口している箱状体又は筒状体が設けられ
ていることを特徴とする床パネル。2. A floor space comprising a plurality of support legs for supporting the floor panel material on a lower surface of the floor panel material, and a floor space below the floor panel material is formed on a floor base made of a concrete floor slab or the like. A floor panel which is juxtaposed via the support legs, and has a height of not less than one third of the underfloor space height and lower than the underfloor space height on the lower surface of the floor panel material. A floor panel provided with a box-shaped body or a tubular body having an opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1315677A JP2583623B2 (en) | 1989-12-04 | 1989-12-04 | Soundproof double floor structure and floor panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1315677A JP2583623B2 (en) | 1989-12-04 | 1989-12-04 | Soundproof double floor structure and floor panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03176560A JPH03176560A (en) | 1991-07-31 |
| JP2583623B2 true JP2583623B2 (en) | 1997-02-19 |
Family
ID=18068238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1315677A Expired - Lifetime JP2583623B2 (en) | 1989-12-04 | 1989-12-04 | Soundproof double floor structure and floor panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2583623B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3791374B2 (en) * | 2001-09-21 | 2006-06-28 | ヤマハ株式会社 | Sound insulation floor and floor base panel |
| JP5178937B2 (en) * | 2011-06-09 | 2013-04-10 | 秀樹 堀内 | Sound insulation double floor and building |
| JP6445781B2 (en) * | 2014-05-02 | 2018-12-26 | 大成建設株式会社 | Sound absorbing floor structure |
-
1989
- 1989-12-04 JP JP1315677A patent/JP2583623B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03176560A (en) | 1991-07-31 |
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