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WO2003008237A1 - Element d'isolation phonique - Google Patents

Element d'isolation phonique Download PDF

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Publication number
WO2003008237A1
WO2003008237A1 PCT/EP2002/006106 EP0206106W WO03008237A1 WO 2003008237 A1 WO2003008237 A1 WO 2003008237A1 EP 0206106 W EP0206106 W EP 0206106W WO 03008237 A1 WO03008237 A1 WO 03008237A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
element according
sound
partitions
chambers
Prior art date
Application number
PCT/EP2002/006106
Other languages
German (de)
English (en)
Inventor
Franz Schweiggart
Franz Koch
Dimitrios Patsouras
Klaus Pfaffelhuber
Original Assignee
Faist Automotive Gmbh & Co. Kg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7692123&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2003008237(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Faist Automotive Gmbh & Co. Kg filed Critical Faist Automotive Gmbh & Co. Kg
Priority to DE50201635T priority Critical patent/DE50201635D1/de
Priority to AT02764576T priority patent/ATE283181T1/de
Priority to EP02764576A priority patent/EP1406792B1/fr
Publication of WO2003008237A1 publication Critical patent/WO2003008237A1/fr

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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
    • E04B2001/8281—Flat elements mounted parallel to a supporting surface with an acoustically active air gap between the elements and the mounting surface
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
    • E04B2001/8433—Tray or frame type panels or blocks, with or without acoustical filling with holes in their face
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E04B2001/8485—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element the opening being restricted, e.g. forming Helmoltz resonators
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E04B2001/8495—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element the openings going through from one face to the other face of the element

Definitions

  • the invention relates to a sound shielding element with at least one plate having many small openings, according to the preamble of claim 1.
  • Such sound shielding elements which are used, for example, to protect against sound propagation from the noise area of a room into a neighboring room and / or to cover sound-reflecting or sound-generating components, are already known (WO 00/68039).
  • the dimensioning of the mean diameter or of the small openings formed as holes, slots or the like is just as important as the proportion of the area which has such openings on the entire surface of the sound shielding element.
  • This so-called “perforated area ratio”, like the average diameter or the width of the perforations, should be very small. Perforated area ratios between 0.01% and 10% and average diameter or width of the perforations between 0.01 mm and 1 mm are preferred.
  • the invention has for its object to further improve sound shielding elements of the type mentioned in terms of their sound absorption in the simplest possible manner and with low manufacturing costs.
  • the chambers are preferably rectangular in cross section, so that the partitions each run in a substantially straight plane, which greatly facilitates the production of large-area sound shielding elements.
  • the partitions can also be honeycomb-shaped or be formed by tube pieces placed against one another.
  • the chambers should have a clear width between 10 mm and 300 mm.
  • the partitions should be as thin as possible; wall thicknesses between 0.5 mm and 3 mm are recommended.
  • Polypropylene is particularly recommended as the material for the partition walls in a cased underbody paneling of motor vehicles.
  • metals e.g. B. Aluminum, advantageous for the partitions.
  • a perforation area ratio of between 1% and 8% is particularly preferred for the plate and the average diameter or the width of the small openings should be between 0.05 mm and 1 mm.
  • the system of chambers and partitions should connect to a rear wall on the side facing away from the plate; this can also be designed as a plate. The back wall can also be missing.
  • the chambers are preferably filled with air. It is assumed that the air vibrations behind the "perforated plate” provided with small openings, in particular small circular holes, are influenced by the partition walls arranged as "transverse walls” in such a way that a considerably larger proportion of "sound energy” is dampened in the microperforated plate in front of it ,
  • Figure 1 is a schematic partial view (partially torn) of a sound shielding element according to the invention.
  • Figures 2 and 3 curves for the equivalent absorption area in m 2 depending on the measurement frequency f in Hz.
  • a system 3 of chambers 4 is arranged behind the plate 1, which is provided with small openings 2, which are formed by partitions 5 which extend orthogonally to the plate 1.
  • the chambers 4 are d in this example in cross section quite angular, in particular square, with a width B and a depth T. between the back of the plate 1 and the rear wall 6, which may also consist of a plate. However, this rear wall can also be omitted, which surprisingly hardly changes the absorption behavior.
  • the partition walls 5 have the smallest possible wall thickness S, which above all has to ensure sufficient stability of the, in particular, self-supporting chamber system A of “cassettes”.
  • the wall thickness d of the plate 1 is approximately 2 mm. Hole diameters D of 0.8 mm are used and the hole area ratio, i.e. H. the proportion of the area occupied by the holes in the total area of the plate 1 is 0.5%.
  • the chamber system 3 has a depth T of 30 mm.
  • the chamber or partition walls 5 with a wall thickness S of 2 mm are made of polypropylene.
  • the plate 1 consists of transparent injection molding; it has a wall thickness d of 2 mm.
  • the chambers 4 have the height H and the width B.
  • the dimension of the entire measured arrangement is 1 ⁇ 200 mm x 800 mm
  • FIG. 3 shows the dependence of the absorption curve on the “degree of cassette” with the same cassette measures as in the previous example, if a high-frequency tuning of the microperforation is selected.
  • the distance ie the depth T
  • T 20 mm
  • the cassette can achieve a significant improvement in absorption, even if the percentage increase is not as great as with deep tuning.
  • the sound shielding element can be manufactured by, for example, the following preferred manufacturing processes in such a way that the partitions forming the chambers form a mechanical structural unit with the plate or layer covering the chambers:
  • thermoplastic plastic film is heated from a heating field and then pulled, in particular by means of vacuum, into a deep-drawing tool forming the chambers.
  • the film clings to the chamber contour and hardens by cooling.
  • the perforations can be made by perforating the chamber bottoms that form the plate or layer using needle fields. This is either still possible in the deep-drawing tool or even after demolding.
  • a corresponding blowing process can also be used, in which the thermoplastic plastic film is pressed against the contour of the shaping blow molding tool by the blowing pressure.
  • Nonwovens, foams, foils or plastic masses are pressed into a chamber structure.
  • Cold pressing of thermally heated thermoplastic materials or hot pressing of thermosetting materials is possible.
  • the perforations can Per f orieren subsequently a g e b racht be either in the pressing tool itself or.
  • This can be a thin fleece application which has an average opening proportion and an average opening diameter, which correspond to the design rules for the openings of the preamble of claim 1.
  • a component integrating the plate or the layer on the one hand and the partition walls of the chamber on the other hand can also be produced by casting, injection molding, injection molding or injection molding. It is also recommended to use the same material for the plate and partitions.
  • the partition walls with the chamber structure in particular polypropylene, are injection molded onto a perforated, in particular needle-rolled, film made of polypropylene, in particular an aluminum polypropylene composite layer.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Laminated Bodies (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

Afin d'améliorer l'absorption acoustique, une plaque (1) ou une couche présentant de nombreuses petites perforations (2) avec un faible rapport de surface perforée est utilisée en tant que couverture frontale pour un système (3) de chambres (4) séparées les unes des autres par des parois de séparation (5). Ces parois de séparation (5) sont sensiblement perpendiculaires à ladite plaque (1).
PCT/EP2002/006106 2001-07-17 2002-06-04 Element d'isolation phonique WO2003008237A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE50201635T DE50201635D1 (de) 2001-07-17 2002-06-04 Schallabschirmelement
AT02764576T ATE283181T1 (de) 2001-07-17 2002-06-04 Schallabschirmelement
EP02764576A EP1406792B1 (fr) 2001-07-17 2002-06-04 Element d'isolation phonique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10134783A DE10134783B4 (de) 2001-07-17 2001-07-17 Schallabschirmelement
DE10134783.9 2001-07-17

Publications (1)

Publication Number Publication Date
WO2003008237A1 true WO2003008237A1 (fr) 2003-01-30

Family

ID=7692123

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/006106 WO2003008237A1 (fr) 2001-07-17 2002-06-04 Element d'isolation phonique

Country Status (5)

Country Link
EP (1) EP1406792B1 (fr)
AT (1) ATE283181T1 (fr)
DE (2) DE10134783B4 (fr)
ES (1) ES2235081T3 (fr)
WO (1) WO2003008237A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013169788A3 (fr) * 2012-05-07 2014-06-19 3M Innovative Properties Company Dispositif et installation d'amortissement acoustique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4680963B2 (ja) * 2007-07-09 2011-05-11 株式会社神戸製鋼所 枠体付き二重壁構造体
DE102010029409B4 (de) 2010-05-27 2019-12-12 Röchling Automotive AG & Co. KG Thermische Kfz-Funktionsraumverkleidung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1352581A (fr) * 1963-04-03 1964-02-14 Dalle d'insonorisation en des matières synthétiques à l'état de mousse, et procédé de fabrication de cette dalle
DE1264021B (de) * 1962-12-01 1968-03-21 Gruenzweig & Hartmann A G Schalldaemmende Wandung
US3985198A (en) * 1974-02-20 1976-10-12 Firma Carl Freudenberg Sound deadening laminate
EP0524566A1 (fr) * 1991-07-24 1993-01-27 Zdzislaw Pregowski Panneau d'insonorisation
WO1999035007A1 (fr) * 1998-01-09 1999-07-15 Rieter Automotive (International) Ag Jeu de pieces ultralegeres a absorption des bruits et des chocs
WO1999044816A1 (fr) * 1998-03-03 1999-09-10 Faist Automotive Gmbh & Co. Kg Stratifie
WO2000068039A1 (fr) * 1999-05-06 2000-11-16 Faist Automotive Gmbh & Co. Kg Element de protection sonore, son utilisation et son procede de realisation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2038410B (en) * 1978-12-27 1982-11-17 Rolls Royce Acoustic lining utilising resonance

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1264021B (de) * 1962-12-01 1968-03-21 Gruenzweig & Hartmann A G Schalldaemmende Wandung
FR1352581A (fr) * 1963-04-03 1964-02-14 Dalle d'insonorisation en des matières synthétiques à l'état de mousse, et procédé de fabrication de cette dalle
US3985198A (en) * 1974-02-20 1976-10-12 Firma Carl Freudenberg Sound deadening laminate
EP0524566A1 (fr) * 1991-07-24 1993-01-27 Zdzislaw Pregowski Panneau d'insonorisation
WO1999035007A1 (fr) * 1998-01-09 1999-07-15 Rieter Automotive (International) Ag Jeu de pieces ultralegeres a absorption des bruits et des chocs
WO1999044816A1 (fr) * 1998-03-03 1999-09-10 Faist Automotive Gmbh & Co. Kg Stratifie
WO2000068039A1 (fr) * 1999-05-06 2000-11-16 Faist Automotive Gmbh & Co. Kg Element de protection sonore, son utilisation et son procede de realisation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013169788A3 (fr) * 2012-05-07 2014-06-19 3M Innovative Properties Company Dispositif et installation d'amortissement acoustique

Also Published As

Publication number Publication date
DE10134783B4 (de) 2005-09-15
ATE283181T1 (de) 2004-12-15
ES2235081T3 (es) 2005-07-01
DE50201635D1 (de) 2004-12-30
DE10134783A1 (de) 2003-02-13
EP1406792B1 (fr) 2004-11-24
EP1406792A1 (fr) 2004-04-14

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