A sound insulation structure includes a mass part and a plurality of spring parts. The mass part is arranged to be spaced from a compartment member that compartmentalizes an internal space of a structure body and an outside. At least part of the mass part has a flat surface shape. The spring part is arranged on a side facing the compartment member in the mass part. The spring part includes: a hollow film material having airtightness and flexibility; and a gas encapsulated within the film material. The film material includes a recess part on one surface which is at least one of surfaces on the compartment member side and the mass part side.
SOUND INSULATION STRUCTURE
2020-09-17
Patent
Electronic Resource
English