CA2040076A1 - Sound absorbing panel - Google Patents
Sound absorbing panelInfo
- Publication number
- CA2040076A1 CA2040076A1 CA2040076A CA2040076A CA2040076A1 CA 2040076 A1 CA2040076 A1 CA 2040076A1 CA 2040076 A CA2040076 A CA 2040076A CA 2040076 A CA2040076 A CA 2040076A CA 2040076 A1 CA2040076 A1 CA 2040076A1
- Authority
- CA
- Canada
- Prior art keywords
- resonators
- sound absorbing
- absorbing panel
- moulded part
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0001—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular acoustical properties
- B29K2995/0002—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular acoustical properties insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Building Environments (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
A moulded part absorbing airborne sound contains on its surface directed towards the sound source acoustic resonators having different resonance frequencies, a plurality of different, higher-frequency resonators being arranged in an area-covering fashion in the range of effectiveness of the low-frequency resonators, the walls of the resonators and the entire surface, supporting the resonators, of the moulded part being designed as a plate absorber, and openings of the resonators remaining free.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4011705.7 | 1990-04-11 | ||
DE4011705A DE4011705A1 (en) | 1990-04-11 | 1990-04-11 | AIR SOUND ABSORBING MOLDED PART |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2040076A1 true CA2040076A1 (en) | 1991-10-12 |
CA2040076C CA2040076C (en) | 1995-11-14 |
Family
ID=6404204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002040076A Expired - Fee Related CA2040076C (en) | 1990-04-11 | 1991-04-09 | Sound absorbing panel |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0454949B1 (en) |
JP (1) | JP2522606B2 (en) |
AT (1) | ATE120576T1 (en) |
CA (1) | CA2040076C (en) |
DE (2) | DE4011705A1 (en) |
DK (1) | DK0454949T3 (en) |
ES (1) | ES2071844T3 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5587564A (en) * | 1994-04-27 | 1996-12-24 | Firma Carl Freudenberg | Noise damper |
US5589242A (en) * | 1992-12-10 | 1996-12-31 | Firma Carl Freudenberg | Housing Lining |
Families Citing this family (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4226885C2 (en) * | 1992-08-13 | 2001-04-19 | Bayerische Motoren Werke Ag | Sound absorption process for motor vehicles |
DE4228169C1 (en) * | 1992-08-25 | 1993-10-07 | Freudenberg Carl Fa | Sound absorbing cladding element |
DE9215132U1 (en) * | 1992-11-07 | 1993-04-15 | Pelzer, Helmut, 5804 Herdecke, De | |
DE4241518C1 (en) * | 1992-12-10 | 1994-02-24 | Freudenberg Carl Fa | Fixed plastics cladding round wheel - is double-skinned forming chambers with indentations towards wheel in outer skin |
DE4304628C2 (en) * | 1993-02-16 | 1997-04-03 | Freudenberg Carl Fa | Sound absorbing housing lining |
DE9312734U1 (en) * | 1993-08-25 | 1995-01-05 | Faist M Gmbh & Co Kg | Multi-layer soundproofing and damping component |
DE9404621U1 (en) * | 1994-03-18 | 1995-07-20 | Faist M Gmbh & Co Kg | Sound absorbing molded body |
DE4413009A1 (en) * | 1994-04-15 | 1995-10-19 | Naeher Georg Gmbh | Sound absorbers for motor vehicles |
DE4415983C2 (en) † | 1994-05-06 | 1998-02-19 | Continental Ag | Device to be attached to the wheel arch of a motor vehicle and acting as a passive sound absorber |
ES2129218T3 (en) * | 1994-08-12 | 1999-06-01 | Illbruck Gmbh | SOUND ABSORBER. |
DE9414943U1 (en) * | 1994-09-14 | 1996-01-18 | Faist M Gmbh & Co Kg | Foil resonance absorber |
CH690143A5 (en) * | 1995-01-27 | 2000-05-15 | Rieter Automotive Int Ag | Lambda / 4 sound absorbers. |
DE29605599U1 (en) * | 1996-03-26 | 1997-07-31 | Faist M Gmbh & Co Kg | Multi-layer, sound absorbing component |
WO1999061221A1 (en) * | 1998-05-22 | 1999-12-02 | Rieter Automotive (International) Ag | Method for producing a dual-shell component with integrated lambda/4 absorbers |
DE19826745A1 (en) * | 1998-06-16 | 1999-12-30 | Continental Ag | Damping element |
GB2341353A (en) * | 1998-09-11 | 2000-03-15 | Rover Group | Bulkhead assembly |
EP1020846B1 (en) * | 1999-01-14 | 2018-09-19 | Nichias Corporation | Sound absorbing structure |
DE19910595A1 (en) * | 1999-03-10 | 2000-09-21 | Volkswagen Ag | Airborne sound-absorbing molded part |
DE19952689A1 (en) * | 1999-11-02 | 2001-05-03 | Cww Gerko Akustik Gmbh & Co Kg | Soundproofing wall and use of the same |
US6598701B1 (en) * | 2000-06-30 | 2003-07-29 | 3M Innovative Properties Company | Shaped microperforated polymeric film sound absorbers and methods of manufacturing the same |
ATE329817T1 (en) | 2001-04-20 | 2006-07-15 | Carcoustics Tech Ct Gmbh | UNDERBODY PANEL |
DE10228395C1 (en) * | 2002-06-25 | 2003-12-04 | Carcoustics Tech Ct Gmbh | Acoustic insulation, for motor vehicles, has a shaped body from a deep drawn thermoplastic film, with a second component part to form a hollow zone with it and spacers from the body extend into the hollow |
FR2847867B1 (en) * | 2002-12-02 | 2005-08-19 | Sofitec Sa | SEALING AND SOUNDPROOFING SHEET FOR A BODY COMPONENT |
DE20320100U1 (en) * | 2003-12-23 | 2005-05-12 | Carcoustics Tech Center Gmbh | Airborne sound absorbing component |
EP1736298A1 (en) * | 2005-06-17 | 2006-12-27 | Rieter Technologies AG | Method of manufacturing of a sound insulating body and sound insulating body |
DE102005046087B3 (en) * | 2005-09-26 | 2007-04-05 | Carcoustics Tech Center Gmbh | Sound insulating underfloor cladding for motor vehicles has plastic hollow body whose underside is formed to reduce air resistance and/or essentially smooth with soft wall region and at least one relatively hard wall region |
DE102006018465A1 (en) * | 2006-04-19 | 2007-10-25 | Carcoustics Tech Center Gmbh | Sound-insulating component for motor vehicles and method for its production |
DE102006055336B4 (en) * | 2006-11-23 | 2015-10-15 | Federal-Mogul Sealing Systems Gmbh | Protective shield for the thermal and acoustic shielding of components of an internal combustion engine |
JP5315864B2 (en) * | 2008-09-01 | 2013-10-16 | ヤマハ株式会社 | Car body structure and floor |
FR2943594A1 (en) * | 2009-03-24 | 2010-10-01 | Peugeot Citroen Automobiles Sa | Acoustic baffle i.e. wall shaped acoustic baffle, for use between engine and passenger compartment of motor vehicle, has cavity incompletely closed to form slit of small width, where slit serving as collar of resonator is zigzag in shape |
FR2946278B1 (en) * | 2009-06-03 | 2011-06-17 | Mann & Hummel Gmbh | METHOD FOR MANUFACTURING ACOUSTIC DEVICE OF PLASTIC MATERIAL BY EXTRUSION BLOWING |
DE102012220769A1 (en) * | 2012-11-14 | 2014-05-15 | Federal-Mogul Sealing Systems Gmbh | Protective shield for thermal and acoustic shielding |
EP2939828A1 (en) | 2014-04-29 | 2015-11-04 | Autoneum Management AG | Exterior trim part |
EP2939881A1 (en) | 2014-04-29 | 2015-11-04 | Autoneum Management AG | Alternative Exterior Trim Part |
JP6416944B2 (en) * | 2017-01-17 | 2018-10-31 | フタバ産業株式会社 | Suppression member |
WO2018177573A1 (en) | 2017-03-31 | 2018-10-04 | Carcoustics Techconsult Gmbh | Acoustically active plastic hollow body, and method for the production thereof |
JP7132039B2 (en) | 2018-08-30 | 2022-09-06 | 株式会社マーレ フィルターシステムズ | Head cover for cylinder head of internal combustion engine |
JP7028125B2 (en) | 2018-09-25 | 2022-03-02 | トヨタ車体株式会社 | Sound absorption and insulation structure |
CN110369006B (en) * | 2019-08-02 | 2021-11-05 | 遵义医学院附属医院 | Biological safety cabinet body with function of making an uproar is fallen |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1502314A (en) * | 1974-04-08 | 1978-03-01 | Lockheed Aircraft Corp | Cellular sound absorptive structure |
DE2649816A1 (en) * | 1976-10-29 | 1978-05-11 | Huebner Gummi & Kunststoff | Sound-absorbing panel of soft, flexible, polyurethane foam - has integral skin and blind holes to improve noise absorption |
DE2834683C2 (en) * | 1978-08-08 | 1980-07-24 | Optac Wilfrid Weltin, 6074 Roedermark | Sound absorber |
GB2038410B (en) * | 1978-12-27 | 1982-11-17 | Rolls Royce | Acoustic lining utilising resonance |
US4421811A (en) * | 1979-12-21 | 1983-12-20 | Rohr Industries, Inc. | Method of manufacturing double layer attenuation panel with two layers of linear type material |
JPS57140511U (en) * | 1981-02-28 | 1982-09-03 | ||
DE3615360A1 (en) * | 1986-05-06 | 1987-11-12 | Stankiewicz Alois Dr Gmbh | COMPONENT WITH ACOUSTIC PROPERTIES |
-
1990
- 1990-04-11 DE DE4011705A patent/DE4011705A1/en active Granted
-
1991
- 1991-01-30 DK DK91101183.1T patent/DK0454949T3/en active
- 1991-01-30 EP EP91101183A patent/EP0454949B1/en not_active Expired - Lifetime
- 1991-01-30 AT AT91101183T patent/ATE120576T1/en active
- 1991-01-30 DE DE59105025T patent/DE59105025D1/en not_active Expired - Lifetime
- 1991-01-30 ES ES91101183T patent/ES2071844T3/en not_active Expired - Lifetime
- 1991-04-02 JP JP3069676A patent/JP2522606B2/en not_active Expired - Fee Related
- 1991-04-09 CA CA002040076A patent/CA2040076C/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5589242A (en) * | 1992-12-10 | 1996-12-31 | Firma Carl Freudenberg | Housing Lining |
US5624518A (en) * | 1992-12-10 | 1997-04-29 | Firma Carl Freudenberg | Method of making a housing liner |
US5587564A (en) * | 1994-04-27 | 1996-12-24 | Firma Carl Freudenberg | Noise damper |
Also Published As
Publication number | Publication date |
---|---|
DE4011705C2 (en) | 1992-07-23 |
ES2071844T3 (en) | 1995-07-01 |
EP0454949A2 (en) | 1991-11-06 |
ATE120576T1 (en) | 1995-04-15 |
JPH04225398A (en) | 1992-08-14 |
EP0454949A3 (en) | 1992-10-21 |
DE4011705A1 (en) | 1991-10-17 |
EP0454949B1 (en) | 1995-03-29 |
DE59105025D1 (en) | 1995-05-04 |
CA2040076C (en) | 1995-11-14 |
JP2522606B2 (en) | 1996-08-07 |
DK0454949T3 (en) | 1995-08-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |