Title:
【発明の名称】自動車室内の遮音構造
Document Type and Number:
Japanese Patent JP3367637
Kind Code:
B2
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.
Inventors:
Kouichi Nemoto
Kyoichi Watanabe
Satoshi Nagashima
Kyoichi Watanabe
Satoshi Nagashima
Application Number:
JP28405997A
Publication Date:
January 14, 2003
Filing Date:
October 16, 1997
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
B32B5/02; B32B27/36; B60R13/02; B60R13/08; G10K11/16; G10K11/162; (IPC1-7): B60R13/08; B32B5/02; B32B27/36; G10K11/16; G10K11/162
Domestic Patent References:
| JP7152384A | ||||
| JP732955A | ||||
| JP7233570A | ||||
| JP8146967A | ||||
| JP8183408A | ||||
| JP6166942A | ||||
| JP8152890A |
Attorney, Agent or Firm:
Motonori Matoba