Title:
空気音を吸収する部材
Document Type and Number:
Japanese Patent JP2007515340
Kind Code:
A
Abstract:
The invention relates to an airborne-sound absorbing component, in particular for motor vehicles, comprising a resonance absorber ( 1 ) with a plurality of differently sized hollow chambers ( 2 ) spaced apart from each other, and comprising a porous sound-absorbing layer ( 8 ) made of an air-permeable material, which layer faces the incoming sound, wherein in each instance the hollow chambers comprise a wall section ( 5 ) which faces the incoming sound. The wall sections ( 5 ), which face the incoming sound and which are able to oscillate, are closed off so as to be airtight, wherein the resonance absorber ( 1 ) comprises one or several spacers ( 10 ) such that at least the majority of the wall sections ( 5 ) of the hollow chambers ( 2 ), which wall sections face the incoming sound, do not establish contact with the porous layer ( 8 ) and are able to oscillate independently of said porous layer ( 8 ). As a result of these features improved sound absorption capability across a broad frequency range is achieved.
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Inventors:
Felker, Christine
Application Number:
JP2006545933A
Publication Date:
June 14, 2007
Filing Date:
October 21, 2004
Export Citation:
Assignee:
Car Caustics Tech Center Gezel Shaft Mitt Beschlenktel Haftung
International Classes:
B60R13/08; G10K11/16; G10K11/172
Domestic Patent References:
| JP2007502748A | 2007-02-15 | |||
| JPH10504406A | 1998-04-28 | |||
| JPH10282965A | 1998-10-23 | |||
| JPH08505581A | 1996-06-18 | |||
| JP2002029330A | 2002-01-29 | |||
| JP2001507470A | 2001-06-05 | |||
| JPH04225398A | 1992-08-14 | |||
| JPH08207833A | 1996-08-13 | |||
| JPS59209935A | 1984-11-28 |
Foreign References:
| US2177393A | 1939-10-24 |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tetsuro Shimada
Shinji Mitsuhashi
Masaya Nishiyama
Jun Tsuruta
Tetsuro Shimada
Shinji Mitsuhashi
Masaya Nishiyama