JPH10183805A - Soundproof double floor - Google Patents
Soundproof double floorInfo
- Publication number
- JPH10183805A JPH10183805A JP34836796A JP34836796A JPH10183805A JP H10183805 A JPH10183805 A JP H10183805A JP 34836796 A JP34836796 A JP 34836796A JP 34836796 A JP34836796 A JP 34836796A JP H10183805 A JPH10183805 A JP H10183805A
- Authority
- JP
- Japan
- Prior art keywords
- floor
- vibration isolator
- vibration
- fluid
- sealed
- 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.)
- Withdrawn
Links
Landscapes
- Floor Finish (AREA)
- Combined Devices Of Dampers And Springs (AREA)
- Vibration Prevention Devices (AREA)
- Building Environments (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、防音二重床に関
し、詳しくは二重床を構成する床材の防音性能を向上さ
せる技術に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof double floor, and more particularly to a technique for improving the soundproof performance of a floor material constituting the double floor.
【０００２】[0002]
【従来の技術】近年、二重床は、戸建住宅や集合住宅等
において床下配管ができ、施工性が良いことから急速に
普及している。従来の二重床は、例えば図４に示すよう
に、床基材１の下面の複数箇所より防振ゴム３を配設
し、この床基材１を複数隣合うようにしてコンクリート
スラブ等の床下地２上に載置することで構成されてお
り、これにより、床衝撃に対する防音性を確保するよう
にしている。2. Description of the Related Art In recent years, double-floor floors have been rapidly spread because they can be installed underfloor piping in detached houses and apartment houses and have good workability. In a conventional double floor, for example, as shown in FIG. 4, anti-vibration rubbers 3 are provided from a plurality of locations on the lower surface of a floor substrate 1, and a plurality of floor substrates 1 are placed adjacent to each other so as to form a concrete slab or the like. It is configured by being placed on the floor substrate 2, thereby ensuring soundproofing against floor impact.
【０００３】[0003]
【発明が解決しようとする課題】ところが、防振ゴム３
を用いた従来の床構造にあっては、防音性能を高めるた
めに防振ゴム３の弾性を小さくしても、床重量衝撃で問
題となる低音域では防音性能があまり改善されないばか
りか、床全体の剛性が低下し、耐荷重性が悪くなった
り、歩行感が低下するという問題があった。However, the vibration isolating rubber 3
In the conventional floor structure using the rubber, even if the elasticity of the vibration isolating rubber 3 is reduced in order to enhance the soundproofing performance, the soundproofing performance is not so much improved in the low sound range which is a problem due to the floor weight impact. There has been a problem that the overall rigidity is reduced, load resistance is deteriorated, and walking feeling is reduced.
【０００４】本発明は、上記の点に鑑みてなされたもの
で、低音域においても防音性能が高く、且つ床としての
剛性の確保と歩行感の良さとを得ることができる防音二
重床を提供することを課題とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides a soundproof double floor which has high soundproof performance even in a low-frequency range, and can secure the rigidity of the floor and obtain a good walking feeling. The task is to provide.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、本発明は、床基材１と床下地２との間に防振ゴム３
を配設すると共に、弾性体５で形成された空洞部６内に
流体を封入して構成される防振装置４を上記防振ゴム３
と並列に配設して成ることを特徴としており、このよう
に構成することで、防振装置４における封入された流体
の流動に伴う減衰作用により、高い防音特性が得られ、
床としての剛性を確保しながら、特に床重量衝撃で問題
となる低音域（特に６３〜１２５Ｈｚの低周波数域）の
防音性能を向上させることができる。In order to solve the above-mentioned problems, the present invention relates to a vibration-insulating rubber between a floor substrate and a floor substrate.
And a vibration isolator 4 configured by sealing a fluid in a cavity 6 formed by an elastic body 5 is attached to the vibration isolating rubber 3.
With such a configuration, a high soundproofing characteristic can be obtained by the damping action accompanying the flow of the sealed fluid in the vibration isolator 4.
While ensuring the rigidity of the floor, it is possible to improve the soundproof performance in a low sound range (particularly, a low frequency range of 63 to 125 Hz) which is a problem particularly due to a floor weight impact.
【０００６】ここで、封入された流体の流動に伴う減衰
効果を更に発現しやすくして、高い防音特性を得るよう
にするために、上記防振装置４の荷重方向のバネ定数を
２．０×１０5 （Ｎ／ｍ）以下とするのが好ましく、ま
た上記防振装置４の損失係数を０．５以上とするのが好
ましく、さらに上記空洞部６内に封入される流体の粘性
係数を０．１（Ｐａ・Ｓ）以上とするのが好ましい。The spring constant in the load direction of the vibration isolator 4 is set to 2.0 in order to further develop the damping effect accompanying the flow of the sealed fluid and to obtain high soundproofing characteristics. × 10 5 (N / m) or less, the loss coefficient of the vibration isolator 4 is preferably 0.5 or more, and the viscosity coefficient of the fluid sealed in the cavity 6 is It is preferable to set it to 0.1 (Pa · S) or more.
【０００７】[0007]
【発明の実施の形態】以下、本発明の実施形態の一例を
説明すると、図１に示す床基材１と、防振ゴム３と、防
振装置４とで戸建住宅や集合住宅等に用いられる防音二
重床が構成されている。ここで床基材１として、１２ｍ
ｍ厚の床仕上げ材１ａと、１２ｍｍ厚のコンパネ１ｂと
を重ねたものが用いられる。尚、床懐高さは例えば２９
ｍｍである。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below. A floor base material 1, a vibration isolating rubber 3, and a vibration isolating device 4 shown in FIG. The soundproof double floor used is configured. Here, as the floor substrate 1, 12 m
A laminate of a m-thick floor finishing material 1a and a 12-mm-thick control panel 1b is used. The height of the floor is, for example, 29.
mm.
【０００８】防振ゴム３は、床の脚として用いられ、床
基材１の下面の複数箇所に配設されており、この床基材
１を複数隣合うようにしてコンクリートスラブ等の床下
地２上に載置することで、床衝撃に対する防音性が確保
されている。防振ゴム３の材質としては、例えば硬度５
０度、高さ３０ｍｍ、径５０ｍｍの天然ゴムが用いられ
る。The rubber cushions 3 are used as legs of the floor, and are disposed at a plurality of locations on the lower surface of the floor substrate 1. 2, soundproofing against floor impact is ensured. The material of the vibration-proof rubber 3 is, for example, hardness 5
A natural rubber having 0 degrees, a height of 30 mm and a diameter of 50 mm is used.
【０００９】さらに、床基材１と床下地２との間には、
上記防振ゴム３と並列に防振装置４が配設されている。
この防振装置４は、内部に空洞部６を有する弾性体５
と、空洞部６内に封入される流体とで構成されており、
振動入力を受けた弾性体５の変形を利用して、封入され
た流体の流動により、大きな減衰力を得る構造となって
いる。弾性体５の上面には床基材１の下面を支持する平
板状の支持部５ａが設けられ、弾性体５の下面には床下
地２上に載置される幅広の平坦な載置面５ｂが設けられ
ており、これにより弾性体５と上記防振ゴム３とを介し
て床下地２上に床基材１が安定良く支持されている。な
お、弾性体５の材質について、例えば天然ゴム、ブチル
ゴム、ニトリルゴム、クロロプレンゴム等が挙げられる
が、これらに限定されるものではない。また弾性体５内
部に封入される流体としては、例えばジメチルポリシロ
キサン等のシリコンオイル類、エチレングリコール、プ
ロピレングリコール等のポリグリコール類などが挙げら
れるが、これらに限定されるものではないが、封入する
流体の粘性係数が０．１（Ｐａ・Ｓ）以下の粘性の場合
は、流体の粘性抵抗による振動減衰作用が小さくなり、
床衝撃音の低減効果が減少することから、流体の粘性係
数は０．１（Ｐａ・Ｓ）以上であるのが望ましい。Further, between the floor substrate 1 and the floor substrate 2,
An anti-vibration device 4 is provided in parallel with the anti-vibration rubber 3.
The vibration isolator 4 includes an elastic body 5 having a cavity 6 therein.
And a fluid sealed in the cavity 6.
The structure is such that a large damping force is obtained by utilizing the deformation of the elastic body 5 which has received the vibration input and by the flow of the sealed fluid. On the upper surface of the elastic body 5, a flat supporting portion 5a for supporting the lower surface of the floor substrate 1 is provided, and on the lower surface of the elastic body 5, a wide flat mounting surface 5b mounted on the floor base 2 is provided. Is provided, whereby the floor base material 1 is stably supported on the floor base 2 via the elastic body 5 and the vibration isolating rubber 3. In addition, examples of the material of the elastic body 5 include, but are not limited to, natural rubber, butyl rubber, nitrile rubber, and chloroprene rubber. Examples of the fluid sealed in the elastic body 5 include silicone oils such as dimethylpolysiloxane, and polyglycols such as ethylene glycol and propylene glycol, but are not limited thereto. When the viscosity coefficient of the flowing fluid is 0.1 (Pa · S) or less, the vibration damping effect due to the viscous resistance of the fluid decreases,
Since the effect of reducing the floor impact noise is reduced, the viscosity coefficient of the fluid is desirably 0.1 (Pa · S) or more.
【００１０】また、防振装置４の荷重方向のバネ定数が
２．０×１０5 （Ｎ／ｍ）以上のときは、床の剛性が低
下して耐荷重性能及び及び歩行感が悪くなり、従って、
防振装置４の荷重方向のバネ定数は２．０×１０5 （Ｎ
／ｍ）以下に設定されるのが望ましい。また防振装置４
の持つ振動減衰効果は、弾性体５の損失係数（ｔａｎ
δ）で決定され、損失係数が０．５以下のときは、防振
装置４を介して天井材３に伝搬する振動レベルの減衰効
果が少なく、従って、防振装置４の損失係数は０．５以
上が望ましく、これにより高い振動減衰効果が得られる
ものである。When the spring constant of the vibration isolator 4 in the load direction is 2.0 × 10 5 (N / m) or more, the rigidity of the floor is reduced, and the load resistance and walking sensation are deteriorated. Therefore,
The spring constant of the vibration isolator 4 in the load direction is 2.0 × 10 5 (N
/ M). In addition, vibration isolator 4
Has the vibration damping effect of the loss factor (tan
δ), when the loss coefficient is 0.5 or less, the effect of attenuating the vibration level propagating to the ceiling material 3 via the vibration isolator 4 is small, and therefore, the loss coefficient of the vibration isolator 4 is equal to 0.1. It is desirable that the number be 5 or more, so that a high vibration damping effect can be obtained.
【００１１】しかして、床基材１と床下地２との間に、
床基材１の脚として用いられる防振ゴム３と、弾性体５
で形成された空洞部６内に流体を封入して構成される防
振装置４とを並列に配設したことによって、床基材１に
衝撃が与えられて、床基材１から防振ゴム３を介して床
下地２に振動が伝搬する際に、防振ゴム３による防振効
果に加えて、防振装置４における封入された流体の流動
に伴う減衰作用により、床の振動レベルが低減され、特
に床重量衝撃で問題となる低音域（６３〜１２５Ｈｚの
低周波数域）での防音性能を向上させることができる。
しかも、防振装置４の荷重方向のバネ定数を２．０×１
０5 （Ｎ／ｍ）以下とし、且つ防振装置４の損失係数を
０．５以上に設定することで、床全体の剛性が保たれ、
耐荷重性能や歩行感を良好に保ったまま、高い防振効果
が得られるようになる。さらに空洞部６内に封入される
流体の粘性係数を０．１（Ｐａ・Ｓ）以上とすること
で、流体の粘性抵抗による振動減衰作用が大きくなって
床衝撃音の低減効果が一層向上することとなり、結果と
して、防振装置４を介して伝搬する振動レベルの一層の
低減が図られ、封入された流体の流動に伴う減衰効果を
更に発現しやすくさせることができ、更に高い防音特性
が得られるものである。Thus, between the floor substrate 1 and the floor substrate 2,
An anti-vibration rubber 3 used as a leg of the floor substrate 1 and an elastic body 5
Is arranged in parallel with the vibration isolator 4 which is formed by sealing a fluid in the cavity 6 formed by the above. When vibration propagates to the floor substrate 2 through the floor 3, the vibration level of the floor is reduced due to the damping effect accompanying the flow of the sealed fluid in the vibration isolator 4, in addition to the vibration damping effect of the vibration damping rubber 3. In particular, it is possible to improve the soundproofing performance in a low sound range (low frequency range of 63 to 125 Hz) which is a problem particularly due to floor weight impact.
Moreover, the spring constant of the vibration isolator 4 in the load direction is set to 2.0 × 1.
0 5 (N / m) or less and the loss coefficient of the vibration isolator 4 is set to 0.5 or more, the rigidity of the entire floor is maintained,
A high vibration isolation effect can be obtained while maintaining good load bearing performance and walking feeling. Furthermore, by setting the viscosity coefficient of the fluid sealed in the cavity 6 to 0.1 (Pa · S) or more, the vibration damping effect due to the viscous resistance of the fluid increases, and the effect of reducing the floor impact noise is further improved. As a result, the vibration level propagating through the vibration isolator 4 can be further reduced, and the damping effect accompanying the flow of the enclosed fluid can be more easily expressed, so that a higher sound insulation characteristic can be obtained. It is obtained.
【００１２】また、本実施形態の防振装置４と防振ゴム
３とを並列に配設した床構造と、従来の防振ゴム３のみ
を配設した床構造に関して、ＪＩＳＡ１４１８に示す建
築物の現場における床衝撃音レベルの測定方法に準じて
床衝撃音の計測を行なった結果を図３に示す。図３のラ
インａは本実施形態の二重床における重量床衝撃音レベ
ルを示し、ラインｂは従来の床構造（図４）の重量床衝
撃音レベルを示している。この図３から、本実施形態の
床構造は、防音性能決定周波数（１２５Ｈｚ）での重量
床衝撃音レベルが１．７ｄＢ低減し、防音性能が改善さ
れていることが分かる。The floor structure in which the vibration damping device 4 and the vibration damping rubber 3 of the present embodiment are arranged in parallel and the floor structure in which only the conventional vibration damping rubber 3 is disposed are described in the building structure shown in JIS A1418. FIG. 3 shows the result of measurement of the floor impact sound according to the method of measuring the floor impact sound level at the site. A line a in FIG. 3 shows a heavy floor impact sound level of the double floor of the present embodiment, and a line b shows a heavy floor impact sound level of the conventional floor structure (FIG. 4). From FIG. 3, it can be seen that the floor structure of the present embodiment has the weight floor impact sound level at the sound insulation performance determination frequency (125 Hz) reduced by 1.7 dB, and the sound insulation performance is improved.
【００１３】[0013]
【発明の効果】以上説明したように、本発明のうち請求
項１記載の発明は、床基材と床下地との間に防振ゴムを
配設すると共に、弾性体で形成された空洞部内に流体を
封入して構成される防振装置を上記防振ゴムと並列に配
設して成るから、防振装置における封入された流体の流
動に伴う減衰効果によって、高い防音特性が得られ、床
としての剛性を確保しながら、特に床重量衝撃で問題と
なる低音域（特に６３〜１２５Ｈｚの低周波数域）の防
音性能を向上させることができる。As described above, according to the first aspect of the present invention, the vibration isolating rubber is disposed between the floor substrate and the floor substrate, and the inside of the hollow portion formed by the elastic body is provided. Since the vibration isolating device configured by enclosing the fluid in the vibration isolating rubber is disposed in parallel with the vibration isolating rubber, a high soundproofing characteristic is obtained by an attenuation effect accompanying the flow of the sealed fluid in the vibration isolating device, While ensuring the rigidity of the floor, it is possible to improve the soundproof performance in a low sound range (particularly, a low frequency range of 63 to 125 Hz) which is a problem particularly due to a floor weight impact.
【００１４】また請求項２記載の発明は、請求項１記載
の効果に加えて、防振装置の荷重方向のバネ定数が２．
０×１０5 （Ｎ／ｍ）以下であるから、封入された流体
の流動に伴う減衰効果が更に発現しやすくなり、高い防
音特性が得られる。また請求項３記載の発明は、請求項
１記載の効果に加えて、防振装置の損失係数が０．５以
上であるから、封入された流体の流動に伴う減衰効果を
更に発現しやすくさせることができ、更に高い防音特性
が得られる。According to a second aspect of the present invention, in addition to the effect of the first aspect, a spring constant in the load direction of the vibration isolator is set to 2.
Since it is 0 × 10 5 (N / m) or less, the damping effect accompanying the flow of the sealed fluid is more easily exhibited, and high soundproofing properties are obtained. According to the third aspect of the invention, in addition to the effect of the first aspect, since the loss coefficient of the vibration isolator is 0.5 or more, the damping effect accompanying the flow of the sealed fluid is further easily exhibited. And a higher soundproofing property can be obtained.
【００１５】また請求項４記載の発明は、請求項１記載
の効果に加えて、空洞部内に封入される流体の粘性係数
が０．１（Ｐａ・Ｓ）以上であるから、弾性体で形成さ
れた空洞部内の流体の動きに伴う減衰効果が一層高めら
れ、より一層高い防音特性が得られる。According to a fourth aspect of the present invention, in addition to the effect of the first aspect, since the viscosity of the fluid sealed in the cavity is 0.1 (Pa · S) or more, the fluid is formed of an elastic body. The damping effect associated with the movement of the fluid in the formed cavity is further enhanced, and higher soundproofing properties are obtained.
【図１】本発明の実施形態の一例の断面図である。FIG. 1 is a sectional view of an example of an embodiment of the present invention.
【図２】同上の防振装置の断面図である。FIG. 2 is a cross-sectional view of the vibration isolator according to the first embodiment.
【図３】同上の二重床と従来の二重床との重量床衝撃音
レベルを説明するグラフである。FIG. 3 is a graph illustrating a heavy floor impact sound level between the same double floor and a conventional double floor.
【図４】従来の二重床の断面図である。FIG. 4 is a sectional view of a conventional double floor.
１ 床基材 ２ 床下地 ３ 防振ゴム ４ 防振装置 ５ 弾性体 ６ 空洞部 DESCRIPTION OF SYMBOLS 1 Floor base material 2 Floor base 3 Anti-vibration rubber 4 Anti-vibration device 5 Elastic body 6 Cavity
Claims (4)
すると共に、弾性体で形成された空洞部内に流体を封入
して構成される防振装置を上記防振ゴムと並列に配設し
て成ることを特徴とする防音二重床。An anti-vibration device comprising a vibration isolating rubber disposed between a floor base material and a floor base and a fluid sealed in a cavity formed of an elastic body is provided. A soundproof double floor characterized by being arranged in parallel.
×１０5 （Ｎ／ｍ）以下であることを特徴とする請求項
１記載の防音二重床。2. A spring constant in a load direction of the vibration isolator is 2.0.
The soundproof double floor according to claim 1, characterized in that it is not more than × 10 5 (N / m).
ことを特徴とする請求項１記載の防音二重床。3. The soundproof double floor according to claim 1, wherein a loss coefficient of the vibration isolator is 0.5 or more.
０．１（Ｐａ・Ｓ）以上であることを特徴とする請求項
１記載の防音二重床。4. The soundproof double floor according to claim 1, wherein the viscosity coefficient of the fluid sealed in the cavity is 0.1 (Pa · S) or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34836796A JPH10183805A (en) | 1996-12-26 | 1996-12-26 | Soundproof double floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34836796A JPH10183805A (en) | 1996-12-26 | 1996-12-26 | Soundproof double floor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10183805A true JPH10183805A (en) | 1998-07-14 |
Family
ID=18396557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34836796A Withdrawn JPH10183805A (en) | 1996-12-26 | 1996-12-26 | Soundproof double floor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10183805A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000144999A (en) * | 1998-11-13 | 2000-05-26 | Hayakawa Rubber Co Ltd | Sound insulation floor structure and sound insulation floor material |
| WO2007078030A1 (en) * | 2006-01-03 | 2007-07-12 | Seung Jong Shin | Structure for reducing noise transmitted through apartment slab |
| WO2007078031A1 (en) * | 2006-01-03 | 2007-07-12 | Seung Jong Shin | Structure for reducing noise transmitted through apartment slab |
| WO2007086630A1 (en) * | 2006-01-25 | 2007-08-02 | Seung Jong Shin | Structure of reducing noise transmitted concrete slab between levels in multilevel building |
| JP2009068186A (en) * | 2007-09-11 | 2009-04-02 | Sekisui House Ltd | Sound-insulating floor structure |
| KR20190011860A (en) * | 2017-07-25 | 2019-02-08 | 주식회사 하우이씨엠 | Anti vibration mount with fluid filled inside |
| JP2020139318A (en) * | 2019-02-28 | 2020-09-03 | 住友理工株式会社 | Double floor structure |
-
1996
- 1996-12-26 JP JP34836796A patent/JPH10183805A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000144999A (en) * | 1998-11-13 | 2000-05-26 | Hayakawa Rubber Co Ltd | Sound insulation floor structure and sound insulation floor material |
| WO2007078030A1 (en) * | 2006-01-03 | 2007-07-12 | Seung Jong Shin | Structure for reducing noise transmitted through apartment slab |
| WO2007078031A1 (en) * | 2006-01-03 | 2007-07-12 | Seung Jong Shin | Structure for reducing noise transmitted through apartment slab |
| WO2007086630A1 (en) * | 2006-01-25 | 2007-08-02 | Seung Jong Shin | Structure of reducing noise transmitted concrete slab between levels in multilevel building |
| JP2009068186A (en) * | 2007-09-11 | 2009-04-02 | Sekisui House Ltd | Sound-insulating floor structure |
| KR20190011860A (en) * | 2017-07-25 | 2019-02-08 | 주식회사 하우이씨엠 | Anti vibration mount with fluid filled inside |
| JP2020139318A (en) * | 2019-02-28 | 2020-09-03 | 住友理工株式会社 | Double floor structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20040302 |