Soundproofing structure
AssigneeNissan Motor Co., Ltd.
InventorsNorifumi HORIBE, Susumu MIURA
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Abstract
To provide a means capable of suppressing deterioration in the soundproofing performance of a soundproofing material capable of exhibiting high soundproofing performance over a wide range of a frequency range of 2000 Hz or less. A soundproofing material including a sheet having elasticity, and a support portion partitioning the sheet into a partition portion while supporting the sheet is configured so that a surface rigidity (k) of the sheet and a surface density (m) of the sheet in the partition portion satisfy a relationship of the following Expression 1. Further, the soundproofing material is disposed on a substrate so that the sheet is separated from the substrate to configure a soundproofing structure: 1 2 π k m > 900 [ Hz ] [ Expression 1 ]
Claims9
-8. (canceled)
A soundproofing structure comprising:
- a substrate;
- and
- a soundproofing material disposed on the substrate, wherein
- the soundproofing material includes a sheet having elasticity, and a support portion partitioning the sheet into a partition portion while supporting the sheet,
- a surface rigidity (k) of the sheet and a surface density (m) of the sheet in the partition portion satisfy a relationship of the following Expression 1, and
- the soundproofing material is disposed on the substrate so that the sheet is separated from the substrate:
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- 1
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- 1
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- π
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- k
- m
- >
- 900
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- Hz
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- Expression
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- 1
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Dependencies are inferred from the claim text.