JPH0624933U - Composite soundproof structure - Google Patents
Composite soundproof structureInfo
- Publication number
- JPH0624933U JPH0624933U JP6296692U JP6296692U JPH0624933U JP H0624933 U JPH0624933 U JP H0624933U JP 6296692 U JP6296692 U JP 6296692U JP 6296692 U JP6296692 U JP 6296692U JP H0624933 U JPH0624933 U JP H0624933U
- Authority
- JP
- Japan
- Prior art keywords
- glass wool
- foamed silicone
- composite
- frequency range
- silicone
- 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.)
- Pending
Links
Landscapes
- Building Environments (AREA)
- Laminated Bodies (AREA)
Abstract
(57)【要約】
【目的】 低周波数域から高周波数域まで高い防音効果
を有する複合防音構造体を提供することを課題とする。
【構成】 騒音源4に密接している発泡シリコーン3
と、この発泡シリコーン3の外側に密接して設けたグラ
スウール2と、このグラスウール2の外側に密接して設
けた遮音板1よりなり、発泡シリコーン3の発泡倍率は
3〜15倍、好ましくは3〜6倍としたものである。
(57) [Abstract] [Purpose] An object is to provide a composite soundproof structure having a high soundproofing effect from a low frequency range to a high frequency range. [Structure] Foamed silicone 3 close to the noise source 4
And the sound insulation plate 1 provided in close contact with the outside of the glass wool 2, and the foaming silicone 3 has an expansion ratio of 3 to 15, preferably 3 .About.6 times.
Description
【0001】[0001]
本考案は騒音源を被覆し騒音を外部に発散し難くする防音構造体に関する。 The present invention relates to a soundproof structure that covers a noise source and makes it difficult for noise to radiate outside.
【0002】[0002]
従来、騒音発生源の防音にはグラスウール、樹脂発泡体、アスファルト等の防 音材が利用されている。特にグラスウールは耐熱性や低価格から様々な分野で利 用されている。その使用方法としては、遮音板にグラスウール成形物を張り付け た複合防音材、又は図5に示すように更にグラスウールの周辺をシール材を兼ね たゴム成形品5で囲った複合防音材が使用されていた。 Conventionally, soundproof materials such as glass wool, resin foam, and asphalt have been used for soundproofing noise sources. In particular, glass wool is used in various fields due to its heat resistance and low price. As a method of using it, a composite soundproofing material in which a glass wool molded product is attached to a sound insulation plate, or a composite soundproofing material in which the periphery of the glass wool is surrounded by a rubber molded product 5 which also serves as a sealing material as shown in Fig. 5 is used. It was
【0003】 上述の複合防音材の樹脂発泡体、グラスウールの代わりの制振材、遮音板は各 種の素材を組み合わせた複合防音材が利用されていた。For the resin foam of the composite soundproof material, the vibration damping material instead of glass wool, and the sound insulation plate, the composite soundproof material in which various kinds of materials are combined has been used.
【0004】[0004]
しかし、優秀な防音材として利用されているグラスウールは、成形性に難点が あり、使用者の希望する形状に綺麗に成形すること、特に密度を一定にして3次 元形状に成形することは困難である。 However, glass wool, which is used as an excellent soundproofing material, has a difficulty in moldability, and it is difficult to mold it neatly into the shape desired by the user, and particularly to mold it into a three-dimensional shape with a constant density. Is.
【0005】 又、耐水性の問題からアルミニウムのフィルム等によって被覆されており、こ の作業は人手に頼って行われるため、コスト高となると共に、グラスウールの人 体に与える影響も無視出来ない。Further, since it is covered with an aluminum film or the like due to the problem of water resistance, and this work is carried out manually, the cost is high and the effect of glass wool on the human body cannot be ignored.
【0006】 更に、グラスウールは低周波数域(200〜600Hz)での防音特性は優れ ているが、中・高周波数域(800〜5000Hz)では防音効果が低いという 欠点がある。Further, although glass wool has excellent soundproofing characteristics in the low frequency range (200 to 600 Hz), it has a drawback that the soundproofing effect is low in the middle and high frequency ranges (800 to 5000 Hz).
【0007】 一方、防音材として利用されている樹脂発泡体は、高周波数域(2000〜5 000Hz)では良好な防音特性を示すが、低・中周波数域では防音効果が低く 、又、発泡体であるために機械的強度が低いという欠点がある。On the other hand, a resin foam used as a soundproof material has good soundproofing characteristics in a high frequency range (2000 to 5000 Hz), but has a low soundproofing effect in a low / medium frequency range. Therefore, there is a drawback that the mechanical strength is low.
【0008】 本考案はこれらの欠点を解決して、低周波数域から高周波数域まで高い防音効 果を有する複合防音材を提供することを課題とする。An object of the present invention is to solve these drawbacks and to provide a composite soundproof material having a high soundproofing effect from a low frequency range to a high frequency range.
【0009】[0009]
上述の課題を解決するために、複合防音材において、騒音源4に密接している 発泡シリコーン3と、この発泡シリコーン3の外側に密接して設けたグラスウー ル2と、このグラスウール2の外側に密接して設けた遮音板1とよりなり、前記 発泡シリコーン3の発泡倍率は3〜15倍、好ましくは3〜6倍としたものであ る。 In order to solve the above-mentioned problems, in the composite soundproof material, the foamed silicone 3 that is in close contact with the noise source 4, the glass wool 2 that is provided in close contact with the outside of this foamed silicone 3, and the outside of this glass wool 2 are provided. The sound insulating plate 1 is provided in close contact with the foamed silicone 3, and the foaming ratio of the foamed silicone 3 is 3 to 15 times, preferably 3 to 6 times.
【0010】[0010]
騒音源に密着している発泡シリコーンが高周波数域で高い防音効果を発揮し、 この外側で遮音板との間のグラスウールが低周波数域で高い防音効果を発揮する ので、総合的に高い防音効果を発揮する。 The foamed silicone, which is in close contact with the noise source, has a high soundproofing effect in the high frequency range, and the glass wool between the sound insulation plate and the sound insulating plate exhibits a high soundproofing effect in the low frequency range on the outside. Exert.
【0011】[0011]
図1は本考案の複合防音板の断面図である。遮音板1に直接グラスウール2を 接合させ、発泡シリコーン3で被覆する。この発泡シリコーン3は騒音源4にぴ ったりと密着している。 FIG. 1 is a sectional view of the composite soundproof plate of the present invention. The glass wool 2 is directly bonded to the sound insulation plate 1 and covered with the foamed silicone 3. The foamed silicone 3 is in close contact with the noise source 4.
【0012】 更に、発泡シリコーン3はその撥水性により、グラスウール2の防水材となっ ている。又、発泡シリコーン3には連続気泡型と独立気泡型とがあるが、成形性 、防音性の点から連続気泡型が好ましい。Further, the foamed silicone 3 is a waterproof material for the glass wool 2 due to its water repellency. Further, the foamed silicone 3 includes an open-cell type and a closed-cell type, but the open-cell type is preferable in terms of moldability and soundproofing.
【0013】 なお、硬化発泡方法に常温硬化型と加熱硬化型があり、何れでも良いが、発泡 シリコーンの発泡倍率は3〜15倍程度であり、その成形性、成形物の強度を考 慮すると、3〜6倍程度の発泡倍率が好ましい。There are room-temperature curing type and heat-curing type as the curing and foaming method. Either of them may be used, but the foaming ratio of the foamed silicone is about 3 to 15 times, and considering its moldability and strength of the molded product. A foaming ratio of about 3 to 6 times is preferable.
【0014】 実験例(1)として、発泡性シリコーン組成物(商品名;Threebond 5277C スリーボンド社製)を600×600mmの成形型に注入し、更に 600×600×10mmのグラスウール(面密度0.86kg/m2 )を載せ た後、型蓋を被せた。この状態で10分間静置して発泡シリコーン組成物を発泡 硬化させた。得られたグラスウール/発泡シリコーン成形物をシリコーン粘着剤 (商品名;SH4280 トーレダウ社製)にて厚さ0.8mmの鋼板に接着し て、厚さ19.8mm,面密度10.2kg/m2 の複合防音構造体(図1示) を得た。この試料を実験室で音響透過損失方法(JIS A 1416)に準じ て測定した。測定結果は図4の特性図に示す。In Experimental Example (1), a foamable silicone composition (trade name; Threebond 5277C manufactured by ThreeBond Co., Ltd.) was poured into a 600 × 600 mm molding die, and further 600 × 600 × 10 mm glass wool (area density 0.86 kg). / M 2 ) and then covered with a mold lid. In this state, it was left standing for 10 minutes to foam and cure the foamed silicone composition. The obtained glass wool / foamed silicone molded product was adhered to a 0.8 mm-thick steel plate with a silicone adhesive (trade name: SH4280 manufactured by Toray Dow) to give a thickness of 19.8 mm and an areal density of 10.2 kg / m 2. To obtain a composite soundproof structure (Fig. 1). This sample was measured in the laboratory according to the sound transmission loss method (JIS A 1416). The measurement results are shown in the characteristic diagram of FIG.
【0015】 比較例(2)として、発泡性シリコーン組成物(商品名;Threebond 5277C スリーボンド社製)を600×600mmの成形型に注入し、更に 600×600×10mmのグラスウール(面密度0.86kg/m2 )を載せ た後、更に前述の発泡性シリコーン組成物を注入してグラスウールをサンドウィ ッチ状になるようにしてから、型蓋を被せた。この状態で10分間静置して発泡 シリコーン組成物を発泡硬化させた。得られたグラスウール/発泡シリコーン成 形物をシリコーン粘着剤(商品名;SH4280 トーレダウ社製)にて厚さ0 .8mmの鋼板に接着して、厚さ19.8mm,面密度10.2kg/m2 の複 合防音構造体(図2示)を得た。この試料を実験室で音響透過損失方法(JIS A 1416)に準じて測定した。測定結果は図4の特性図に示す。As Comparative Example (2), a foamable silicone composition (trade name; Threebond 5277C manufactured by ThreeBond Co., Ltd.) was poured into a 600 × 600 mm molding die, and further 600 × 600 × 10 mm glass wool (area density 0.86 kg). / M 2 ), the foamable silicone composition described above was further injected to make glass wool into a sandwich shape, and then the mold lid was covered. In this state, it was left standing for 10 minutes to foam and cure the foamed silicone composition. The thickness of the obtained glass wool / foamed silicone molded product was measured with a silicone adhesive (trade name; SH4280 manufactured by Toray Dow) to a thickness of 0. A composite soundproof structure (shown in FIG. 2) having a thickness of 19.8 mm and an areal density of 10.2 kg / m 2 was obtained by adhering to a steel plate of 8 mm. This sample was measured in the laboratory according to the sound transmission loss method (JIS A 1416). The measurement results are shown in the characteristic diagram of FIG.
【0016】 比較例(3)として、600×600×10mmのグラスウール(面密度0. 86kg/m2 )を600×600mmの成形型に置き、発泡性シリコーン組成 物(商品名;Threebond5277C スリーボンド社製)を成形型に注 入し、型蓋を被せた。この状態で10分間静置して発泡シリコーン組成物を発泡 硬化させた。得られたグラスウール/発泡シリコーン成形物をシリコーン粘着剤 (商品名;SH4280 トーレダウ社製)にて厚さ0.8mmの鋼板に接着し て、厚さ19.8mm,面密度10.2kg/m2 の複合防音構造体(図3示) を得た。この試料を実験室で音響透過損失方法(JIS A 1416)に準じ て測定した。測定結果は図4の特性図に示す。As Comparative Example (3), 600 × 600 × 10 mm glass wool (area density: 0.86 kg / m 2 ) was placed in a 600 × 600 mm mold, and a foamable silicone composition (trade name; Threebond 5277C manufactured by ThreeBond Co., Ltd.) was used. ) Was poured into the mold and the mold lid was covered. In this state, it was left standing for 10 minutes to foam and cure the foamed silicone composition. The obtained glass wool / foamed silicone molded product was adhered to a 0.8 mm-thick steel plate with a silicone adhesive (trade name: SH4280 manufactured by Toray Dow) to give a thickness of 19.8 mm and an areal density of 10.2 kg / m 2. A composite soundproofing structure of (FIG. 3) was obtained. This sample was measured in the laboratory according to the sound transmission loss method (JIS A 1416). The measurement results are shown in the characteristic diagram of FIG.
【0017】 上述の実験例(1)、比較例(2)、比較例(3)測定結果を図4の防音特性 図で比較すると、400Hz程度以下の低周波数域では透過損失(音の吸収率) に大差はないが、これ以上の周波数域になると大きな差が認められ、特に図3示 の比較例(3)との差が大きい。When the measurement results of the above-mentioned experimental example (1), comparative example (2), and comparative example (3) are compared with the soundproof characteristic diagram of FIG. 4, the transmission loss (sound absorption rate) is low in a low frequency range of about 400 Hz or less. ) Is not so different, but a large difference is recognized in the frequency range higher than this, and in particular, the difference from the comparative example (3) shown in FIG. 3 is large.
【0018】[0018]
上述のように、この複合防音構造体には次のような効果がある。即ち、 1)使用する発泡シリコーンの撥水性により、グラスウールを防音材としたとき に必要となるゴム成形シール材の必要がなくなる。 2)複合防音構造体と騒音源との間は発泡体が密着して隙間がないため防音効果 が向上している。 3)グラスウールが芯材として入っているため、発泡体の取扱いが容易である。 4)発泡体の欠点である中周波数域の防音特性が著しく向上する。 5)発泡体部分の密度を一定に出来る。 As described above, this composite soundproof structure has the following effects. That is, 1) Due to the water repellency of the foamed silicone used, there is no need for a rubber molding sealing material which is required when glass wool is used as a soundproof material. 2) Since the foam is in close contact and there is no gap between the composite soundproof structure and the noise source, the soundproofing effect is improved. 3) Since glass wool is contained as the core material, the foam can be easily handled. 4) The soundproofing property in the middle frequency range, which is a defect of the foam, is remarkably improved. 5) The density of the foam part can be made constant.
【図1】本考案の複合防音板の断面図である。FIG. 1 is a sectional view of a composite soundproof plate of the present invention.
【図2】複合防音板の比較例(2)の断面図である。FIG. 2 is a sectional view of a comparative example (2) of the composite soundproof plate.
【図3】複合防音板の比較例(3)の断面図である。FIG. 3 is a sectional view of a comparative example (3) of the composite soundproof plate.
【図4】各複合防音構造体の防音特性図であるFIG. 4 is a soundproof characteristic diagram of each composite soundproof structure.
【図5】従来の複合防音板の断面図である。FIG. 5 is a sectional view of a conventional composite soundproof plate.
1 遮音板 2 グラスウール 3 発泡シリコーン 4 騒音源 1 Sound insulation board 2 Glass wool 3 Foamed silicone 4 Noise source
Claims (1)
いる発泡シリコーンと、この発泡シリコーンの外側に密
接して設けたグラスウールと、このグラスウールの外側
に密接して設けた遮音板とよりなり、前記発泡シリコー
ンの発泡倍率は3〜15倍、好ましくは3〜6倍である
ことを特徴とする複合防音構造体。1. A composite soundproofing material comprising foamed silicone closely contacting a noise source, glass wool closely contacted to the outside of the foamed silicone, and a sound insulation plate closely contacted to the outside of the glass wool. A composite soundproof structure, wherein the foaming ratio of the foamed silicone is 3 to 15 times, preferably 3 to 6 times.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6296692U JPH0624933U (en) | 1992-09-08 | 1992-09-08 | Composite soundproof structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6296692U JPH0624933U (en) | 1992-09-08 | 1992-09-08 | Composite soundproof structure |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0624933U true JPH0624933U (en) | 1994-04-05 |
Family
ID=13215590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6296692U Pending JPH0624933U (en) | 1992-09-08 | 1992-09-08 | Composite soundproof structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0624933U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007324389A (en) * | 2006-06-01 | 2007-12-13 | Tokyo Electric Power Co Inc:The | Sound proofing panel and transformer sound-proofing system employing the same |
JP2007324388A (en) * | 2006-06-01 | 2007-12-13 | Tokyo Electric Power Co Inc:The | Low-frequency sound absorbing material and transformer sound-proofing system employing the same |
KR101298474B1 (en) * | 2012-02-01 | 2013-08-21 | 서울대학교산학협력단 | Toothbrush having toothpaste measuring function |
-
1992
- 1992-09-08 JP JP6296692U patent/JPH0624933U/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007324389A (en) * | 2006-06-01 | 2007-12-13 | Tokyo Electric Power Co Inc:The | Sound proofing panel and transformer sound-proofing system employing the same |
JP2007324388A (en) * | 2006-06-01 | 2007-12-13 | Tokyo Electric Power Co Inc:The | Low-frequency sound absorbing material and transformer sound-proofing system employing the same |
JP4690254B2 (en) * | 2006-06-01 | 2011-06-01 | 東京電力株式会社 | Soundproof panel and transformer soundproofing system using the same |
JP4690253B2 (en) * | 2006-06-01 | 2011-06-01 | 東京電力株式会社 | Low frequency sound absorbing material and transformer soundproofing system using the same |
KR101298474B1 (en) * | 2012-02-01 | 2013-08-21 | 서울대학교산학협력단 | Toothbrush having toothpaste measuring function |
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