초록 ▼

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. T

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.

대표청구항 ▼

[ What is claimed is:] [1.] 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 part

[ What is claimed is:] [1.] 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.