Sound Insulator For The Passenger Compartment Of A Motor Vehicle

A sound insulator for a motor vehicle passenger compartment is disclosed. The aim of the invention is to develop a sound insulator which makes it possible to obtain an improved damping effect within a frequency range less than 300 Hz. In that respect, the invention relates to a sound insulator for a...

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Bibliographische Detailangaben
Hauptverfasser: BAUER ACHIM, AUGELE HANS-PETER, BUSCH INGO, HARLOFF BERND, KOELLE GUENTER, NEIS MICHAEL, SCHEIBLE KARL, KOENIG TORSTEN, CLAAR KLAUS-PETER
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A sound insulator for a motor vehicle passenger compartment is disclosed. The aim of the invention is to develop a sound insulator which makes it possible to obtain an improved damping effect within a frequency range less than 300 Hz. In that respect, the invention relates to a sound insulator for a motor vehicle passenger compartment, which comprises an air cushion consisting of a dampingly active envelope which is made of an elastic material and disposed between a sound-generating component and the compartment internal space. The invention provides for a sound damping layer ( 25 ) which matches the shape of said component ( 13 ), acts as a spring material system and is covered on the compartment side by a heavyweight film ( 26 ), thereby forming the first shell of the air cushion ( 29 ). The invention also provides for the second shell of the air cushion ( 29 ) which is tightly connected to the heavyweight film ( 26 ), consists of an elastic, preferably pre-shaped, film ( 27 ) which forms the cushion air between the first and second shell.