Noise insulating structure for automotive vehicle passenger comp

Details Noise insulating structure for automotive vehicle passenger comp Noise insulating structure for automotive vehicle passenger comp

1998-10-15

2000-08-15

Pape, Joseph D.

Land vehicles: bodies and tops

Bodies

Lining

181286, B62D 3300

Patent

active

061024651

ABSTRACT:
A noise insulating structure for a passenger compartment of an automotive vehicle. The noise insulating structure comprises first, second and third sound absorbing materials which are disposed respectively to a head lining, a dash insulator and a floor carpet disposed in the passenger compartment. The first sound absorbing material is capable of absorbing sound within a first frequency range of from 0.8 to 10 KHz. The second sound absorbing material is capable of absorbing sound within a second frequency range of from 0.3 to 2 KHz. The third sound absorbing material is capable of absorbing sound within a third frequency range of from 0.1 to 1 KHz. Each sound absorbing material is formed of a unshaped polyester fiber mixture which is prepared by mixing polyester (main) fibers and binder fibers for bonding the polyester fibers to each other.

REFERENCES:
patent: 3918541 (1975-11-01), Krieger
patent: 3953632 (1976-04-01), Robinson
patent: 4539252 (1985-09-01), Franz
patent: 4619344 (1986-10-01), Uesugi et al.
patent: 4705139 (1987-11-01), Gahlau et al.
patent: 5554831 (1996-09-01), Matsukawa et al.
patent: 5817408 (1998-10-01), Orimo et al.
"Automotive Vehicle Engineering Handbook", Design section, pp. 316-323, 1992.

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