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Sound insulation sheet and sound insulation structure
Provided is a sound-insulating sheet which exhibits a high sound-insulating effect exceeding the quality law in a plurality of frequency bands. A soundproof sheet is formed having at least a sheet part, and a convex part A and a convex part B having different shapes from each other. By means of the arrangement of the protrusions, at least two peaks are obtained in a graph having a frequency X as a horizontal axis and a [Delta] TL (dB) obtained by formula (1) as a vertical axis, which are obtained by measuring the sound transmission loss of the soundproof sheet, and the height of at least two of the peaks is 3 dB or more. [Delta] TL = TL1-TL2 (1) (In formula (1), TL1 is the sound transmission loss (dB) at the frequency X of the sound insulation sheet, and TL2 is the sound transmission loss (dB) at the frequency X of a flat sheet having the same mass as the sound insulation sheet and the same area as the sheet portion. ).
本发明提供在多个频带表现出超过质量定律的高隔音效果的隔音片。至少具有片部和形状彼此不同的凸部A及凸部B而形成隔音片。通过上述凸部的配置等，从而构成为在进行隔音片的声传递损失测定而得到的、以频率X为横轴、以由下述式(1)得到的ΔTL(dB)为纵轴的图表中，得到至少2个峰，且这些峰中的至少2个峰的高度为3dB以上。ΔTL＝TL1‑TL2(1)(上述式(1)中，TL1为隔音片在频率X处的声传递损失(dB)，TL2为质量与隔音片相同且面积与上述片部的面积相同的没有凹凸的平面片在频率X处的声传递损失(dB)。)。
Sound insulation sheet and sound insulation structure
Provided is a sound-insulating sheet which exhibits a high sound-insulating effect exceeding the quality law in a plurality of frequency bands. A soundproof sheet is formed having at least a sheet part, and a convex part A and a convex part B having different shapes from each other. By means of the arrangement of the protrusions, at least two peaks are obtained in a graph having a frequency X as a horizontal axis and a [Delta] TL (dB) obtained by formula (1) as a vertical axis, which are obtained by measuring the sound transmission loss of the soundproof sheet, and the height of at least two of the peaks is 3 dB or more. [Delta] TL = TL1-TL2 (1) (In formula (1), TL1 is the sound transmission loss (dB) at the frequency X of the sound insulation sheet, and TL2 is the sound transmission loss (dB) at the frequency X of a flat sheet having the same mass as the sound insulation sheet and the same area as the sheet portion. ).
本发明提供在多个频带表现出超过质量定律的高隔音效果的隔音片。至少具有片部和形状彼此不同的凸部A及凸部B而形成隔音片。通过上述凸部的配置等，从而构成为在进行隔音片的声传递损失测定而得到的、以频率X为横轴、以由下述式(1)得到的ΔTL(dB)为纵轴的图表中，得到至少2个峰，且这些峰中的至少2个峰的高度为3dB以上。ΔTL＝TL1‑TL2(1)(上述式(1)中，TL1为隔音片在频率X处的声传递损失(dB)，TL2为质量与隔音片相同且面积与上述片部的面积相同的没有凹凸的平面片在频率X处的声传递损失(dB)。)。
Sound insulation sheet and sound insulation structure
隔音片及隔音结构体
NAKAYAMA MASANARI (author) / MATSUOKA TAKESHI (author) / KOSHITOUGE HARUKI (author)
2024-05-14
Patent
Electronic Resource
Chinese
IPC:
G10K
Tonerzeugungsvorrichtungen
,
SOUND-PRODUCING DEVICES
/
B32B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
,
Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse
/
B60R
Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen
,
VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
/
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
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