JPH0545708Y2 - - Google Patents
Info
- Publication number
- JPH0545708Y2 JPH0545708Y2 JP853487U JP853487U JPH0545708Y2 JP H0545708 Y2 JPH0545708 Y2 JP H0545708Y2 JP 853487 U JP853487 U JP 853487U JP 853487 U JP853487 U JP 853487U JP H0545708 Y2 JPH0545708 Y2 JP H0545708Y2
- Authority
- JP
- Japan
- Prior art keywords
- cushioning material
- floor
- floor panel
- cushioning
- floating
- 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
- 239000000463 material Substances 0.000 claims description 77
- 239000000835 fiber Substances 0.000 claims description 23
- 238000007667 floating Methods 0.000 claims description 19
- 239000010410 layer Substances 0.000 claims description 14
- 239000002344 surface layer Substances 0.000 claims description 10
- 239000011230 binding agent Substances 0.000 claims description 9
- 238000007731 hot pressing Methods 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 description 8
- 239000011491 glass wool Substances 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000011490 mineral wool Substances 0.000 description 4
- 239000011120 plywood Substances 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 229910052918 calcium silicate Inorganic materials 0.000 description 3
- 239000000378 calcium silicate Substances 0.000 description 3
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Floor Finish (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は中、高層の集合住宅等において、上階
層で発生する床衝撃音を低減するための浮床用緩
衝材に関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a cushioning material for floating floors in medium- and high-rise apartment buildings, etc., for reducing floor impact noise generated on the upper floors.
（従来技術とその問題点）
従来から、集合住宅の上階層で子供が飛び跳ね
る音等の床衝撃音（以下、重量衝撃音という）が
階下に伝達するのを低減するために、第５図に示
すように、コンクリートスラブ等の床下地材ａと
床パネルｂとの間にガラスウールやロツクウール
等の緩衝層ｃを介在させることが行われている。(Prior art and its problems) Conventionally, in order to reduce the transmission of floor impact noise (hereinafter referred to as weight impact sound), such as the sound of children jumping on the upper floors of apartment buildings, to the lower floors, the technology shown in Fig. 5 has been used. As shown, a buffer layer c of glass wool, rock wool, or the like is interposed between a floor base material a such as a concrete slab and a floor panel b.
しかしながら、このような緩衝材による床衝撃
音の分散、緩和には限度があり、日本建築学会基
準の床衝撃音レベルによる遮音等級で表した場
合、Ｌ−55程度であつて、日常の生活実感として
その衝撃音が少し気になる程度に伝達し、階下に
対して気を配りながら生活をしなければならなか
つた。 However, there is a limit to the dispersion and mitigation of floor impact noise by such cushioning materials, and when expressed as a sound insulation grade based on the floor impact sound level of the Architectural Institute of Japan standards, it is about L-55, which is difficult to feel in daily life. As a result, the impact noise was transmitted to the extent that it was a bit worrisome, and I had to live my life paying close attention to what was going on downstairs.
これは、床パネルｂ上に大きな衝撃力が作用す
ると、該床パネルｂに曲げによる振動が発生し、
この床パネルｂを支持している支持体ｄを介して
その複雑な振動が床下地材ａに伝達するため、力
学的な緩衝効果だけでは限界があるものと推定さ
れ、このため、本願考案者等は、床パネルｂに衝
撃力が作用した時の空気流に着目して衝撃音を分
析したところ、上記構成では床下地材ａと床パネ
ルｂとの間で空気の流動が拘束されているので、
床パネルｂが衝撃力によつて変形した場合に上記
の空気が空気バネの作用をして床下地材ａ及び床
パネルｂの振動が増長され、その振動によつて衝
撃音が伝達されることが判明した。 This is because when a large impact force acts on the floor panel b, vibrations occur on the floor panel b due to bending.
Since the complex vibrations are transmitted to the subfloor material a through the support d that supports the floor panel b, it is estimated that there is a limit to the mechanical buffering effect alone. analyzed the impact sound by focusing on the air flow when an impact force acts on floor panel b, and found that in the above configuration, the air flow was restricted between floor subfloor material a and floor panel b. So,
When floor panel b is deformed by an impact force, the above air acts as an air spring, increasing the vibrations of the subfloor material a and floor panel b, and the impact sound is transmitted by the vibrations. There was found.
このような点に鑑みて、上記空気の圧縮や膨脹
力を緩和する目的で、床パネルに孔を穿設して床
パネルの上面又は側面から空気を流出させるよう
にすると、床衝撃音レベルを遮音等級でＬ−50，
Ｌ−45程度の階下に殆ど気にならないレベルまで
低減できることを見出した。 In view of this, in order to alleviate the above-mentioned compression and expansion forces of the air, holes are drilled in the floor panel to allow air to flow out from the top or side of the floor panel, thereby reducing the floor impact sound level. Sound insulation grade L-50,
We have found that it is possible to reduce the noise level to a level that is almost unnoticeable in the downstairs area of about L-45.
しかしながら、公知の浮床緩衝材、即ち、繊維
密度が64Kg／m3や96Kg／m3のガラスウール等の板
状体を用いると、床衝撃音に±約2.5dBのバラツ
キが発生し、場合によつては設定性能を下回るも
のがあるという問題点があつた。 However, when using a known floating floor cushioning material, that is, a plate-like material such as glass wool with a fiber density of 64Kg/m 3 or 96Kg/m 3 , a variation of ±2.5 dB occurs in the floor impact sound, and in some cases In the past, there was a problem that some of the performance was lower than the set performance.
このようなバラツキの要因として、緩衝材の内
部における空気流及び緩衝材の圧縮弾性率のバラ
ツキが挙げられる。即ち、緩衝材がポーラスな
程、又、その圧縮弾性率が小さい程、緩衝材内部
における上記空気流が大きくなつて床下地材と床
パネル間における空気の圧縮や膨脹作用が生じに
くくなり、さらに、圧縮弾性率が小さいと、床パ
ネルを支持している支持体と一体的に緩衝材が変
位して床パネル自体の変形量が小さくなつて衝撃
力の低減に寄与することになるが、単に空気流を
大にしたり圧縮弾性率を小さくするため緩衝材の
密度を小さくすると、支持体の緩衝材への食い込
みが生じ、その部分のみ圧縮されて緩衝効果には
むしろ悪くなるものである。 Factors contributing to such variations include variations in the airflow inside the cushioning material and in the compressive elastic modulus of the cushioning material. In other words, the more porous the cushioning material is, and the lower its compressive elastic modulus, the larger the airflow inside the cushioning material becomes, making it difficult for air to compress or expand between the flooring material and the floor panel. If the compression modulus is small, the cushioning material will be displaced integrally with the support supporting the floor panel, reducing the amount of deformation of the floor panel itself and contributing to reducing the impact force. If the density of the cushioning material is reduced in order to increase the airflow or to reduce the compressive elastic modulus, the support will dig into the cushioning material, and only that portion will be compressed, which will actually impair the cushioning effect.
本考案はこのような緩衝材内部の空気流と緩衝
材の圧縮弾性率とのバラツキを抑制すると共に表
層に適度な耐圧性をもたせ、浮床構造の床衝撃音
レベルを均一な高性能に設定し得る浮床用緩衝材
の提供を目的とするものである。 The present invention suppresses variations in the airflow inside the cushioning material and the compressive elastic modulus of the cushioning material, gives the surface layer appropriate pressure resistance, and sets the floor impact sound level of the floating floor structure to a uniform high performance. The purpose of the present invention is to provide a cushioning material for floating floors.
（問題点を解決すべき手段）
上記目的を達成するために、本考案の浮床用緩
衝材は、実施例に対応する図面に示すように、床
下地材６と床パネル８との間に介在させる緩衝材
１であつて、該緩衝材１は無機質短繊維を結合剤
とともに熱圧成形して表層部が中層よりも若干繊
維密度の高い板状体に形成されてあり、その表層
部に全面に亘つて多数の小孔５，５……５を穿設
してなること特徴とするものである。(Means to Solve the Problems) In order to achieve the above object, the cushioning material for floating floors of the present invention is provided by intervening between the floor sub-material 6 and the floor panel 8, as shown in the drawings corresponding to the embodiments. The cushioning material 1 is formed by hot-pressing inorganic short fibers together with a binder to form a plate-like body whose surface layer has a slightly higher fiber density than the middle layer. It is characterized by having a large number of small holes 5, 5, . . . 5 formed therein.
（作用）
床パネル８上に重量衝撃音が作用すると、床パ
ネル８が振動するが、その振動により発生した空
気流が緩衝材１の表層部に穿設した多数の小孔５
により吸収されて緩衝材内で均一に分散して空気
バネのような空気圧を速やかに減衰させ、又、多
数の小孔５が緩衝材１の表層部に設けられている
から、表層部に部分的に集中している結合剤が小
孔によつて破砕され且つ繊維自体も部分的に破断
された状態となつているので、緩衝材１の圧縮弾
性率が低位に安定する。一方、無機質短繊維を結
合剤とともに熱圧成形しているため、表層部が中
層よりも繊維密度が高くなつて適度な耐圧性を有
して支持材の当接部での食い込みを防止し、良好
な緩衝作用を奏するものである。(Function) When a weight impact sound acts on the floor panel 8, the floor panel 8 vibrates, and the air flow generated by the vibration is transmitted through the numerous small holes 5 bored in the surface layer of the cushioning material 1.
It is absorbed by the cushioning material 1 and dispersed uniformly within the cushioning material, quickly damping the air pressure like an air spring.In addition, since many small holes 5 are provided in the surface layer of the cushioning material 1, the surface layer Since the binder which is concentrated in the fibers is crushed by the small pores and the fibers themselves are also partially fractured, the compressive elastic modulus of the cushioning material 1 is stabilized at a low level. On the other hand, since the inorganic short fibers are thermoformed together with a binder, the surface layer has a higher fiber density than the middle layer, has appropriate pressure resistance, and prevents the supporting material from digging into the contact area. It exhibits a good buffering effect.
（実施例）
本考案の実施例を図面について説明すると、１
はガラスウール又はロツクウール等の無機質繊維
の板状体よりなる緩衝材で、該表裏層部２，３に
表裏面から中央層部４に達する多数の小孔５，５
……５を全面に亘つて均一に穿設されてある。(Example) To explain the example of the present invention with reference to the drawings, 1
is a cushioning material made of a plate-like body of inorganic fiber such as glass wool or rock wool, and has a large number of small holes 5, 5 in the front and back layer parts 2, 3 reaching from the front and back surfaces to the central layer part 4.
...5 are uniformly perforated over the entire surface.
このような緩衝材１を得るには、グラスウール
又はロツクウール短繊維を空中散布しながら該繊
維に対してフエノール樹脂等の結合剤を５〜15％
重量部で吹き付けて、ガラスウール短繊維の場合
には40〜150Kg／m3、ロツクウール短繊維の場合
には100〜150Kg／m3の密度に設定し、厚さ20〜
100mmの板状物となるように熱圧成形するもので
あり、その結果、表裏層部２，３は中央層部４に
比べて繊維密度が高くなり、又、部分的な結合剤
の集中等で硬くなる。 To obtain such a cushioning material 1, glass wool or rock wool short fibers are sprayed in the air, and a binder such as phenol resin is added to the fibers in an amount of 5 to 15%.
The density is set to 40 to 150 Kg/m 3 for glass wool short fibers and 100 to 150 Kg/m 3 for rock wool short fibers, and the thickness is set to 20 to 150 Kg/m 3 by spraying by weight.
It is hot-pressed to form a 100 mm plate-like product, and as a result, the front and back layer parts 2 and 3 have a higher fiber density than the central layer part 4, and the binder is partially concentrated. It becomes hard.
こうして得られた板状物の表裏層部２，３にピ
ンロールやピンプレス等を使用して多数の小孔
５，５……５を穿設する。 A large number of small holes 5, 5 . . . 5 are made in the front and back layers 2, 3 of the plate thus obtained using a pin roll, a pin press or the like.
小孔５の大きさや配列状態は、孔径が0.2〜30
mm、ピツチが３〜200mmの範囲内で適宜に選択し、
孔径の大きさに比例してピツチを大きく設定す
る。例えば、孔径が0.2mmの場合、ピツチが３〜
20mm、孔径が30mmの場合、ピツチが50〜200mmに
設定される。 The size and arrangement of the small holes 5 vary from 0.2 to 30 mm in diameter.
mm, select the pitch as appropriate within the range of 3 to 200 mm,
Set the pitch to be large in proportion to the hole diameter. For example, if the hole diameter is 0.2 mm, the pitch is 3~
20mm, and the hole diameter is 30mm, the pitch is set to 50 to 200mm.
又、小径５の深さは、表裏層部２，３の高密度
繊維部分を通過するものであればよく、２mm以
上、好ましくは３mm以上の深さであればよいが、
緩衝材１の表裏面間に亘つて貫通するものであつ
てもよい。 Further, the depth of the small diameter 5 may be such that it passes through the high-density fiber portions of the front and back layer portions 2 and 3, and may be at least 2 mm, preferably at least 3 mm.
It may also penetrate between the front and back surfaces of the cushioning material 1.
上述の小孔５，５……５の穿設工程は、高密度
繊維部分を透孔するだけでなく、部分的に集中、
硬化した結合剤を破壊し、又、厚さ方向に押圧す
るため繊維が平面方向に配向される。 The above-mentioned process of drilling the small holes 5, 5...5 not only passes through the high density fiber portion, but also partially concentrates the fiber.
The hardened binder is destroyed and the fibers are oriented in the planar direction by pressing in the thickness direction.
第２図は上記緩衝材１を配設した浮床構造を示
すもので、図において、６は床下地材で、コンク
リートスラブの他に、集合住宅においてはデツキ
プレートと普通コンクリートからなる床下地、デ
ツキプレートと軽量コンクリートからなる床下
地、鉄骨とALCパネルとからなる床下地等があ
り、低層木造アパート等においては軽量鉄骨と合
板からなる床下地等があり、さらに木造２〜３階
建て住宅においては、２×４合板からなる床下
地、在来の木製大梁と根太と合板とからなる床下
地等がある。この上面に上記緩衝材１が敷設さ
れ、該緩衝材１上に適宜間隔毎に載置した帯板状
の支持体７，７……７を介して床パネル８が敷設
されてなるものである。 Figure 2 shows a floating floor structure in which the above-mentioned cushioning material 1 is installed. There are subfloors made of plates and lightweight concrete, and subfloors made of steel frames and ALC panels.In low-rise wooden apartment buildings, there are subfloors made of lightweight steel frames and plywood, and in 2- to 3-story wooden houses. There are subfloors made of 2×4 plywood, and subfloors made of conventional wooden beams, joists, and plywood. The above-mentioned cushioning material 1 is laid on this upper surface, and a floor panel 8 is laid on the cushioning material 1 via strip-shaped supports 7, 7...7 placed at appropriate intervals. .
床パネル８は、合板、パーテイクルボード、硅
酸カルシウム板等の適宜な板材からなり、その内
部に中空孔９，９……９を並列状態で両端面間に
亘つて貫通、配設していると共に各中空孔９から
該床パネル８の表裏面間に貫通する通気孔１０，
１０……１０を所望間隔毎に穿設して空気流通機
能を持たせたものが好ましいが、通気性を有する
材料からなるものであれば、このような孔を設け
る必要はない。又、重量や剛性を高めて衝撃音を
低減させるために、該床パネル８に鉄板や石綿板
等を複合させておくとことが好適である。 The floor panel 8 is made of a suitable board material such as plywood, particle board, calcium silicate board, etc., and hollow holes 9, 9...9 are arranged in parallel and penetrated between both end faces. and a ventilation hole 10 penetrating between the front and back surfaces of the floor panel 8 from each hollow hole 9,
10...10 are preferably provided at desired intervals to provide an air circulation function, but as long as the material is made of a breathable material, it is not necessary to provide such holes. Further, in order to increase weight and rigidity and reduce impact noise, it is preferable to combine the floor panel 8 with iron plates, asbestos plates, or the like.
なお、床パネル８と支持体７とは、予め一体化
した足付形状のパネルを使用してもよい。 Note that the floor panel 8 and the support body 7 may be a foot-shaped panel that is integrated in advance.
床パネル８上には、床仕上材（図示せず）が敷
設されるが、このような床仕上材としては、通気
性を有するものが望ましく、例えば、カーペツト
や木質床材の継手部や裏面に凹凸を設けて空気流
を生じさせるように形成したものが良い。 A floor finishing material (not shown) is laid on the floor panel 8, but it is desirable that such a floor finishing material has breathability. It is preferable to have unevenness on the surface to create an air flow.
このように構成した浮床構造において、床パネ
ル８上に重量衝撃力が作用すると、床パネル８が
振動して該床パネル８と緩衝材１間の空間部の空
気が圧縮され、空気流が発生するが、該空気流は
緩衝材１の表裏層部２，３に穿設された多数の小
孔５，５……５に吸収されて緩衝材１内に分散さ
れることになり、空気圧が速やかに低減するもの
である。 In the floating floor structure configured in this way, when a weight impact force acts on the floor panel 8, the floor panel 8 vibrates, compressing the air in the space between the floor panel 8 and the cushioning material 1, and generating an air flow. However, the air flow is absorbed by the large number of small holes 5, 5...5 bored in the front and back layers 2, 3 of the cushioning material 1, and is dispersed within the cushioning material 1, causing the air pressure to increase. It should be reduced quickly.
又、その空気流は床パネル８の中空孔９や通気
孔１０を通して通気性の有する床仕上材から排出
され、床下地材６に対する振動の伝達が軽減され
る。 Further, the air flow is discharged from the breathable floor covering material through the hollow holes 9 and ventilation holes 10 of the floor panel 8, and the transmission of vibrations to the subfloor material 6 is reduced.
さらに、緩衝材１に設けた多数小孔５，５……
５によつて緩衝材６に部分的に集中している結合
剤が破砕され且つ繊維自体も破断された状態とな
つている一方、表裏層部２，３に繊維密度が高く
形成されるので、支持体７，７が緩衝材１へ食い
込むことがないから、緩衝材の圧縮弾性率が低位
に安定し、良好な緩衝作用を奏するものである。 Furthermore, a large number of small holes 5, 5 provided in the cushioning material 1...
5, the binder partially concentrated in the cushioning material 6 is crushed and the fibers themselves are also broken, while the front and back layer parts 2 and 3 are formed with a high fiber density. Since the supports 7, 7 do not dig into the cushioning material 1, the compressive elastic modulus of the cushioning material is stabilized at a low level and exhibits a good cushioning effect.
従つて、床パネル８に作用する衝撃力は、緩衝
材１による空気流の分散と変位エネルギーの消費
によつて、床下地材６に伝達する振動が軽減さ
れ、衝撃音が緩和されるものであり、しかも、緩
衝材１の空気流と圧縮弾性率のバラツキが少ない
ので、床衝撃音レベルのバラツキが±1dB程度で
あり、遮音等級におけるＬ−45，Ｌ−50程度の初
期の計画通りの安定した性能が得られる。 Therefore, with respect to the impact force acting on the floor panel 8, by dispersing the airflow and consuming displacement energy by the cushioning material 1, the vibration transmitted to the floor sub-material 6 is reduced, and the impact noise is alleviated. Moreover, since there is little variation in the air flow and compression modulus of cushioning material 1, the variation in floor impact sound level is about ±1 dB, and the level of sound insulation is as low as the initial plan of L-45 and L-50. Stable performance can be obtained.
尚、本考案の緩衝材は上記の床構造に限らず、
支持体を使用することなく該緩衝材上に床パネル
を直接、当接させた状態で施工したり、或いは中
空孔９や通気孔１０を有しない床パネルを施工す
る場合においても適用でき、このような構造にお
いても夫々設定した床衝撃音レベルで安定した良
好な緩衝性を発揮する。 The cushioning material of the present invention is not limited to the above-mentioned floor structure.
It can also be applied when constructing a floor panel in direct contact with the cushioning material without using a support, or when constructing a floor panel that does not have hollow holes 9 or ventilation holes 10. Even in such a structure, stable and good cushioning performance is exhibited at the respectively set floor impact sound level.
次に、本考案実施例と従来構造のものとの実験
例を示す。 Next, an experimental example of an embodiment of the present invention and a conventional structure will be shown.
実験例 １
密度64Kg／m3、厚さ25mmのグラスウール短繊維
の結合よりなる板状物にピンロールにて深さ５
mm、直径２mm、1000個／m2の小孔を穿設してなる
緩衝材を本考案の実施例とし、小孔を設けていな
い密度64Kg／m3、厚さ25mmの市販のグラスウール
製緩衝材を比較例として、これらの緩衝材に０〜
200Kg／30×30cmの圧縮力を載荷して圧縮変位量
を測定したところ、本考案実施例の緩衝材が平均
13mm／100Kg、比較例の緩衝材が平均10mm／100Kg
であつて約30％の圧縮弾性率を低位にし、又、繰
り返し荷重による変位量のバラツキは、本考案の
実施例の緩衝材においては５％以内であつたが、
比較例の緩衝材においては、25％であつた。Experimental example 1 A plate made of bonded short glass wool fibers with a density of 64 kg/m 3 and a thickness of 25 mm was rolled to a depth of 5 using a pin roll.
An embodiment of the present invention is a cushioning material having 1000 holes/m 2 in diameter, 2 mm in diameter, and a commercially available glass wool buffer with no holes and a density of 64 kg/m 3 and a thickness of 25 mm. As a comparative example, these cushioning materials were
When the compression force of 200Kg/30×30cm was applied and the amount of compression displacement was measured, it was found that the cushioning material of the embodiment of the present invention had an average
13mm/100Kg, average of comparative example cushioning material is 10mm/100Kg
The compressive elastic modulus of about 30% was kept low, and the variation in displacement due to repeated loading was within 5% in the cushioning material of the embodiment of the present invention.
In the comparative cushioning material, it was 25%.
従つて、本考案実施例の緩衝材は、比較例の緩
衝材に比べて緩衝効果が大きく、バラツキも少な
いことが理解できる。 Therefore, it can be seen that the cushioning material of the embodiment of the present invention has a greater cushioning effect and less variation than the cushioning material of the comparative example.
実験例 ２
前記本考案実施例の緩衝材と比較例の緩衝材と
を、夫々、厚さ150mmのコンクリートスラブ上に
敷設し、その上に高さ12mm、ピツチ450mmの支持
体を介して厚さ25mmの押出し中空硅酸カルシウム
板であつて該表裏面に中空内部に連通する通気孔
を穿設してなる床パネルを施工し、こうして得ら
れた浮床構造を夫々実施例Ａ、比較例Ｂとする。
さらに、浮床構造Ｂにおいて、床パネルとして厚
さ25mmの市販の中実硅酸カルシウム板を使用した
浮床構造を比較例Ｃとして、これらの浮床構造の
重量衝撃音レベルをJIS−A1418に記載されてい
る装置を用いて各３回ずつ測定したところ、第３
図および第４図に示すような結果が得られた。Experimental Example 2 The cushioning material of the embodiment of the present invention and the cushioning material of the comparative example were respectively laid on a concrete slab with a thickness of 150 mm, and a support with a height of 12 mm and a pitch of 450 mm was placed on top of the concrete slab. A floor panel made of a 25 mm extruded hollow calcium silicate plate with ventilation holes communicating with the hollow interior was constructed on the front and back surfaces, and the floating floor structures thus obtained were named Example A and Comparative Example B, respectively. do.
Furthermore, in floating floor structure B, a floating floor structure using a commercially available solid calcium silicate plate with a thickness of 25 mm as a floor panel was used as a comparative example C, and the weight impact sound level of these floating floor structures was determined as described in JIS-A1418. When measurements were taken three times each using the same device, the third
The results shown in the figure and FIG. 4 were obtained.
この図表から明らかなように、本考案実施例の
衝撃材を用いた浮床構造Ａは、緩衝音レベルのバ
ラツキが±1dBの範囲内でＬ−50を確実に保持し
ているが、比較例として示した浮床構造Ｂは、緩
衝音レベルに±2.5dBのバラツキがあり、１部に
Ｌ−50を越えるものがある。又、比較例として示
した浮床構造Ｃは、Ｌ−55〜Ｌ−60の間でバラツ
キが生じていることがわかる。 As is clear from this chart, floating floor structure A using impact material according to the embodiment of the present invention reliably maintains L-50 with variation in the buffered sound level within a range of ±1 dB. In the floating floor structure B shown, there is a variation of ±2.5 dB in the buffered sound level, and some parts exceed L-50. Furthermore, it can be seen that the floating floor structure C shown as a comparative example has variations between L-55 and L-60.
（考案の効果）
以上のように本考案の浮床用緩衝材によれば、
緩衝材の表層部に穿設された多数の小孔によつて
重量衝撃力が加えられた時に生じる空気流を緩衝
材中に分散できて空気振動を速やかに低減させる
ことができると共に緩衝材の圧縮弾性率を低位に
安定する。一方、無機質短繊維を結合剤とともに
熱圧成形しているため、表層部が中層よりも繊維
密度が高くなつて適度な耐圧性により支持材の食
い込みを防止して衝撃音を緩和し、床衝撃音レベ
ルを均一な高性能に設定することができるもので
ある。(Effects of the invention) As described above, according to the floating floor cushioning material of the invention,
Due to the large number of small holes drilled in the surface layer of the cushioning material, the air flow generated when a weight impact force is applied can be dispersed into the cushioning material, and air vibrations can be quickly reduced, and the cushioning material can be Stabilizes the compression modulus at a low level. On the other hand, since the inorganic short fibers are thermoformed together with a binder, the fiber density of the surface layer is higher than that of the middle layer, and the moderate pressure resistance prevents the support material from digging in and reduces impact noise. It is possible to set the sound level uniformly and with high performance.
第１図は本考案の実施例を示す緩衝材の斜視
図、第２図は浮床構造として使用した状態の一部
縦断斜視図、第３図は本考案実施例と従来例との
浮床構造の重量衝撃音レベル比較線図、第４図は
第３図の緩衝音レベルのバラツキを拡大して表し
た比較線図、第５図は浮床構造の従来例を示す簡
略断面図である。
１……緩衝材、２，３……表裏層部、５……小
孔、６……床下地材、７……支持体、８……床パ
ネル。
Fig. 1 is a perspective view of a cushioning material according to an embodiment of the present invention, Fig. 2 is a partially longitudinal perspective view of the cushioning material used as a floating floor structure, and Fig. 3 is a perspective view of a floating floor structure of an embodiment of the present invention and a conventional example. A weight impact sound level comparison diagram, FIG. 4 is a comparison diagram showing an enlarged variation in the damping sound level in FIG. 3, and FIG. 5 is a simplified sectional view showing a conventional example of a floating floor structure. DESCRIPTION OF SYMBOLS 1... Cushioning material, 2, 3... Front and back layer portions, 5... Small holes, 6... Floor base material, 7... Support, 8... Floor panel.
Claims (1)
であつて、該緩衝材は無機質短繊維を結合剤とと
もに熱圧成形して表層部が中層より繊維密度が高
く形成された板状体であり、その表層部に全面に
亘つて多数の小孔を穿設してなることを特徴とす
る浮床用緩衝材。 A cushioning material interposed between a floor subfloor material and a floor panel, the cushioning material being a plate-shaped body formed by hot-pressing inorganic short fibers together with a binder so that the surface layer has a higher fiber density than the middle layer. A cushioning material for a floating floor, characterized by having a large number of small holes perforated throughout the surface layer thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP853487U JPH0545708Y2 (en) | 1987-01-23 | 1987-01-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP853487U JPH0545708Y2 (en) | 1987-01-23 | 1987-01-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63116645U JPS63116645U (en) | 1988-07-27 |
| JPH0545708Y2 true JPH0545708Y2 (en) | 1993-11-25 |
Family
ID=30792999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP853487U Expired - Lifetime JPH0545708Y2 (en) | 1987-01-23 | 1987-01-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0545708Y2 (en) |
-
1987
- 1987-01-23 JP JP853487U patent/JPH0545708Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63116645U (en) | 1988-07-27 |
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