Sound insulation sheet member and sound insulation structure using same
AssigneeMitsubishi Chemical Corporation
InventorsShogo Koga, Shuichi Akasaka
Life of this patent
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Abstract
An object of the present invention is to provide a structural body that has high vibration damping and high sound-insulating performance which exceeds mass law while being relatively light weight, that is highly flexible in design, excellent in versatility, and easy to manufacture so that productivity and economic efficiency can be improved. The object thereof is achieved with a sheet member having a sheet of rubber elasticity and a resonant portion, wherein the resonant portion is provided in contact with a surface of the sheet, the resonant portion including a base part and a weight part, and the weight part being supported by the base part and having a larger mass than the base part.
Claims14
A structural body comprising:
- a sheet member comprising a sheet having rubber elasticity and a resonant portion in contact with a surface of the sheet;
- and
- a support body in contact with a surface of the sheet opposite to the surface contacting the resonant portion;
- wherein
- the resonant portion includes a base part and a weight part supported by the base part,
- a mass of the weight part is larger than a mass of the base part, and
- the support body has a Young's modulus of 1 GPa or more.
Dependencies are inferred from the claim text.