Back to results
US 10,850,472 B2Granted
Soundproofing material
AssigneeNissan Motor Co., Ltd.
InventorsNorifumi Horibe, Susumu Miura
Life of this patent
Estimating the term…
Abstract
To provide a means capable of exhibiting high soundproofing performance over a wide range of a frequency range of 2000 Hz or less. A soundproofing material includes a sheet having elasticity and a support portion partitioning the sheet into partition portions while holding the sheet, in which a surface rigidity (k) and a surface density (m) of the sheet in the partition portion are configured to satisfy a relationship of the following Expression 1. 1 2 π k m > 900 [ Hz ] [ Expression 1 ]
Claims21
A soundproofing material, comprising:
- a sheet having elasticity;
- and
- a support portion partitioning the sheet into a partition portion while supporting the sheet,
- wherein 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.
- [
- Math
- .
-
- 1
- ]
- 1
- 2
-
- π
-
- k
- m
- ≥
- 1473
-
- [
- Hz
- ]
- .
- [
- Expression
-
-
- 1
- ]
27 more elements
Dependencies are inferred from the claim text.