Patent ID: 6102465
Filing Date: 2000-08-15
Classification: B60R

Abstract:
A noise insulating structure for a passenger compartment of an automotive vehicle, comprising:a plurality of interior parts disposed in the passenger compartment; anda plurality of sound absorbing materials which are respectively disposed to the plurality of interior parts, the plurality of sound absorbing materials being different in frequency range where sound is absorbed;wherein said sound absorbing materials is formed of only polyester fibers;wherein the plurality of interior parts include a head lining, a dash insulator, and a floor carpet;wherein the plurality of sound absorbing materials include a first sound absorbing material disposed to the head lining, a second sound absorbing material disposed to the dash insulator, and a third sound absorbing material disposed to the floor carpet, said first sound absorbing material effectively absorbing sound within a range of from 0.8 to 10 KHz, said second sound absorbing material effectively absorbing sound within a range of from 0.3 to 2 KHz, said third sound absorbing material effectively absorbing sound within a range of form 0.1 to 1 KHz.