EP0020628B1 - Sound insulation construction element - Google Patents

Sound insulation construction element Download PDF

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Publication number
EP0020628B1
EP0020628B1 EP79901617A EP79901617A EP0020628B1 EP 0020628 B1 EP0020628 B1 EP 0020628B1 EP 79901617 A EP79901617 A EP 79901617A EP 79901617 A EP79901617 A EP 79901617A EP 0020628 B1 EP0020628 B1 EP 0020628B1
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EP
European Patent Office
Prior art keywords
chambers
sound insulation
component
filled
walls
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.)
Expired
Application number
EP79901617A
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German (de)
French (fr)
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EP0020628A1 (en
Inventor
Rudolf Sommerhalder
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Hawa Sliding Solutions AG
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Hawa AG
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    • 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
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8414—Sound-absorbing elements with non-planar face, e.g. curved, egg-crate 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
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8461—Solid slabs or blocks layered
    • E04B2001/8471—Solid slabs or blocks layered with non-planar interior transition surfaces between layers, e.g. faceted, corrugated

Definitions

  • the invention relates to a component for airborne sound insulation in a plate-like configuration for installation in walls, ceilings and doors, which has a number of flexible walls separated from one another, filled with granules or granular material, and divided in the vertical direction.
  • the degree of airborne sound insulation of a wall mainly depends on its weight per unit area, ie on its mass.
  • the well-known mass law reproduced, the relationship between the weight per unit area of a wall and the sound insulation number, was derived from this statement. Practical measurements show, however, that the sound insulation figures calculated according to the mass law are not achieved because the elastic wall properties are not taken into account. If the wave length in air at a certain frequency becomes smaller than the bending wavelength of the wall with increasing sound excitation frequency, coincidence effects occur which arise from the resonance between the acoustic excitation of the wall and its free bending vibrations and greatly reduce the sound insulation.
  • the invention is based on the object of designing a component of the type described at the outset in such a way that coincidence effects practically do not occur in the frequency range of 60-32,000 Hz mentioned.
  • the invention is based on the consideration of designing a component for airborne sound insulation in such a way that coincidence effects do not occur. If such elements are combined with plate-shaped building materials that show pronounced coincidence effects, then these should be significantly reduced or rendered ineffective. So that the basis weight of the plate-shaped building material, for. B. a chipboard, a cement-bonded chipboard or a gypsum board or the like, increased, which is known to result in an increase in the sound insulation effect.
  • a corrugated cardboard formed from two outer webs 2, 3 and a corrugated central web 4 is used, the cavities formed between the webs 2, 3, 4 forming chambers 5, 6 which are made of a metallic material are filled.
  • the material consists of individual metal balls.
  • the chambers 5, 6, see FIG. 1, run horizontally, which is essential in order to achieve a small height of the mass in the vertical direction.
  • the length dimension in the horizontal direction can be of any length. It is also advantageous if the walls of the chambers 5, 6 formed by the webs 2, 3, 4 are flexible.
  • the webs 2, 3, 4 can therefore not only consist of cardboard, they can also be made of another flexible material.
  • FIGS. 3 and 4 The component 1 shown in FIGS. 3 and 4 is similar to that of FIGS. 1 and 2.
  • Chambers 7 are also formed here, but are shaped like a bulge and are covered by a web 8.
  • the chambers 7 are arranged next to one another and offset from one another and are also filled with a metallic material.
  • a further component for sound insulation is shown, which, for. B. is made of a soft fiberboard 9.
  • the plate 9 grooves 10 are incorporated, which are filled with metallic mass, whereupon they are closed with a web, not shown. It is also important here that the material of the plate 9 is pliable or becomes pliable due to the incorporated grooves 10.
  • the grooves 10 can, as can be seen from FIG. 5, be provided on both sides. However, the plate 9 could also be provided with grooves 10 on only one side.
  • the walls of the chambers 5, 6, 7 can consist of different materials, e.g. B. made of paper, plastic or metals. Materials made of wood or mineral fibers, see Fig. 5, can also be used. Textiles can also be used to form the chambers. Here, for example, two panels of fabric can be stitched, the powdery or granular mass lying between the seams. If long and narrow channels are formed, they must be arranged in a horizontal position.
  • the described construction of the component provides an approximately uniform distribution of the spherical metallic material over the entire surface of the component, without the material, as is the case with a continuous vertical chamber, settling.
  • the gap By dividing the gap, as can be seen above all in the embodiment according to FIG. 2, but also approximately in FIG. 5, into horizontally extending chambers, the setting of the material is prevented or at least greatly reduced.
  • the same effect is also achieved by the arrangement of small individual chambers, as in the embodiment according to FIG. 4. It is essential in all cases that the chamber height in the vertical direction is very low, e.g. B. about 3-10 mm.
  • a metallic material in the form of steel balls was used as the granular material.
  • the spherical material has a small grain size scatter. This facilitates regular pouring, so that setting or slumping, as may be the case with others, e.g. B. mineral materials may be the case, can not occur practically.
  • the steel balls only touch each other in a punctiform manner and therefore guarantee the lowest dynamic rigidity.
  • the individual grains interlock, whereby their free mobility is canceled. This presumably disadvantageous appearance does not occur with the metallic spherical particles.
  • the internal damping of the metallic granulate is greater than that of sand because of its larger specific mass.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

The plate like insulation element (1) comprises chambers (5, 6) of which the walls (2, 3, 4) are at least partly made of a deformable flexible material. The chambers are filled with a pulverulent or granular material, for example a metal powder. The chambers (5), are of a small size in the vertical direction but may form channels in the horizontal direction, this arrangement allows not only the improvement of the insulation capacity by increasing the specific weight of the panel, but also the elimination of the resonance phenomena for frequencies comprised between 100 and 3000 Hz.

Description

Die Erfindung betrifft ein Bauelement für die Luftschalldämmung in plattenförmiger Ausbildung zum Einbau in Wänden, Decken und Türen, das eine Anzahl durchbiegeweiche Wände voneinander getrennter, mit einem Granulat oder körnigem Material gefüllter, in vertikaler Richtung unterteilter Kammern aufweist.The invention relates to a component for airborne sound insulation in a plate-like configuration for installation in walls, ceilings and doors, which has a number of flexible walls separated from one another, filled with granules or granular material, and divided in the vertical direction.

Das Mass der Luftschalldämmung einer Wand hängt bekanntlich hauptsächlich von ihrem Flächengewicht, d. h. von ihrer Masse, ab. Aus dieser Feststellung ist theoretisch das den Zusammenhang zwischen dem Flächengewicht einer Wand und der Schalldämmzahl wiedergegebene bekannte Massengesetz abgeleitet worden. Praktische Messungen zeigen aber, dass die nach dem Massengesetz errechneten Schalldämmzahlen nicht erreicht werden, da die elastischen Wandeigenschaften nicht berücksichtigt werden. Wenn mit steigender Schallerregungsfrequenz die Wellen-Länge in Luft bei einer bestimmten Frequenz kleiner wird als die Biegewellenlänge der Wand, treten Koinzidenz-Wirkungen auf, welche aus der Resonanz zwischen der akustischen Anregung der Wand und ihrer freien Biegeschwingungen entstehen und die Schalldämmung stark vermindern. Dieser durch die Koinzidenz-Wirkungen auftretende Einbruch in das Massengesetz liegt bei den meisten Werkstoffen für raumtrennende Wände zwischen 60 und 3 200 Hz, und es scheint unmöglich, in diesem Bereich die theoretische Schalldämmzahl zu erreichen. Die meisten plattenförmigen Wand-oder Türelemente haben ein Flächengewicht von 6-40 kg/m2. Für diese Flächengewichte haben umfangreiche Messungen gezeigt, dass der grösste Teil der Koinzidenz-Wirkungen, d. h. die Verminderung der Schalldämmung, in dem erwähnten Frequenzbereich auftritt.As is well known, the degree of airborne sound insulation of a wall mainly depends on its weight per unit area, ie on its mass. Theoretically, the well-known mass law reproduced, the relationship between the weight per unit area of a wall and the sound insulation number, was derived from this statement. Practical measurements show, however, that the sound insulation figures calculated according to the mass law are not achieved because the elastic wall properties are not taken into account. If the wave length in air at a certain frequency becomes smaller than the bending wavelength of the wall with increasing sound excitation frequency, coincidence effects occur which arise from the resonance between the acoustic excitation of the wall and its free bending vibrations and greatly reduce the sound insulation. This drop in the mass law due to the effects of coincidence is between 60 and 3,200 Hz for most materials for room dividing walls, and it seems impossible to reach the theoretical sound insulation index in this area. Most panel-shaped wall or door elements have a basis weight of 6-40 kg / m 2. For these basis weights, extensive measurements have shown that the majority of the coincidence effects, ie the reduction in sound insulation, occur in the frequency range mentioned.

Es sind erhebliche Anstrengungen unternommen worden, um die Luftschalldämmung von plattenförmigen Bauelementen zu erhöhen. Grundsätzlich kann dies dadurch geschehen, dass bei einer Platte ihr Flächengewicht durch Belegung der Platte mit zusätzlicher Masse erhöht und/oder ihre Eigensteifigkeit vermindert wird, so dass der Einbruch in der Massengesetz erst bei einer über 3 000 Hz liegenden Frequenz erfolgt.Considerable efforts have been made to increase the airborne sound insulation of plate-shaped components. In principle, this can be done by increasing the basis weight of a plate by covering the plate with additional mass and / or reducing its inherent rigidity, so that the drop in the mass law only occurs at a frequency above 3000 Hz.

Bekannt ist das Verbinden einer Platte mit Bleiblech, wodurch bei dünnen Trägerplatten eine sehr gute Wirkung erreicht wird, weil der Einbruch oberhalb 3 000 Hz zu liegen kommt. Bei dickeren Platten liegt der Einbruch unter 3 000 Hz, und es tritt die an sich bekannte Verringerung der Luftschalldämmung auf, so dass die Schalldämmzahl deutlich unter dem theoretischen Wert liegt.It is known to connect a plate to lead sheet, whereby a very good effect is achieved with thin carrier plates because the break-in is above 3,000 Hz. In the case of thicker panels, the drop is below 3,000 Hz, and the known reduction in airborne sound insulation occurs, so that the sound insulation number is significantly below the theoretical value.

Weiter ist ein aus zwei Bahnen eines flexiblen Werkstoffes bestehendes Flächenelement zur Schalldämmung unter Bildung von mit einem Schüttgut gefüllten Kammern (DE-B-1211370). Die eine Bahn bildet hierbei zwischen den Kammern parallele oder sich kreuzende Nuten oder Täler, wobei als Schüttgut Sand genannt ist. Mit Bauelementen dieser Art erreicht man zwar eine Verschiebung der Frequenzen, in denen Koinzidenz-Wirkungen auftreten, zur höheren Frequenzen, jedoch liegen diese immer noch unter 3 000 Hz.Next is a surface element consisting of two webs of a flexible material for sound insulation to form chambers filled with a bulk material (DE-B-1211370). One path here forms parallel or intersecting grooves or valleys between the chambers, sand being mentioned as bulk material. With components of this type, it is possible to shift the frequencies in which coincidence effects occur to the higher frequencies, but these are still below 3,000 Hz.

Durch die CH-A-255 026 war es ferner bekannt, Metallabfälle als Füllgut zu verwenden.It was also known from CH-A-255 026 to use metal waste as filling material.

Der Erfindung liegt die Aufgabe zugrunde, ein Bauelement der eingangs beschriebenen Art so auszugestalten, dass Koinzidenz-Wirkungen im erwähnten Frequenzbereich von 60-32 000 Hz praktisch nicht auftreten.The invention is based on the object of designing a component of the type described at the outset in such a way that coincidence effects practically do not occur in the frequency range of 60-32,000 Hz mentioned.

Diese Aufgabe wird gemäss der Erfindung dadurch gelöst, dass die Kammern mit einem im wesentlichen kugelförmigen, metallischen Material gefüllt sind.This object is achieved according to the invention in that the chambers are filled with an essentially spherical, metallic material.

Die Erfindung ist in einigen Ausführungsbeispielen in der Zeichnung dargestellt und nachfolgend beschrieben.The invention is shown in some embodiments in the drawing and described below.

Es zeigen :

  • Figur 1 eine Ansicht eines Bauelementes für die Luftschalldämmung aus einer Wellpappe,
  • Figur 2 einen Schnitt längs der Linie 11-11 in Fig. 1 in stark vergrössertem Massstab,
  • Figur 3 eine Ansicht eines weiteren Bauelementes für die Luftschalldämmung,
  • Figur 4 einen Schnitt längs der Linie IV-IV in Fig. 3 in stark vergrössertem Massstab und
  • Figur 5 eine räumliche Darstellung eines dritten Bauelementes für die Luftschalldämmung aus einer Weichfaserplatte.
Show it :
  • FIG. 1 shows a view of a component for airborne sound insulation from corrugated cardboard,
  • 2 shows a section along the line 11-11 in FIG. 1 on a greatly enlarged scale,
  • FIG. 3 shows a view of a further component for airborne sound insulation,
  • 4 shows a section along the line IV-IV in Fig. 3 in a greatly enlarged scale and
  • Figure 5 is a spatial representation of a third component for airborne sound insulation from a soft fiber board.

Die Erfindung geht von der Ueberlegung aus, ein Bauelement für die Luftschalldämmung so auszubilden, dass Koinzidenz-Wirkungen nicht auftreten. Werden solche Elemente mit plattenförmigen Baustoffen, die ausgesprochene Koinzidenz-Wirkungen zeigen, verbunden, dann sollen diese wesentlich verringert bzw. wirkungslos gemacht werden. Damit wird zunächst das Flächengewicht des plattenförmigen Baustoffes, z. B. einer Holzspanplatte, einer zementgebundenen Spanplatte oder einer Gipsplatte o. dgl., erhöht, was bekanntlich auch eine Erhöhung der Schalldämmwirkung zur Folge hat.The invention is based on the consideration of designing a component for airborne sound insulation in such a way that coincidence effects do not occur. If such elements are combined with plate-shaped building materials that show pronounced coincidence effects, then these should be significantly reduced or rendered ineffective. So that the basis weight of the plate-shaped building material, for. B. a chipboard, a cement-bonded chipboard or a gypsum board or the like, increased, which is known to result in an increase in the sound insulation effect.

Bei dem in Fig. 1 und 2 dargestellten Bauelement 1 wird eine aus zwei Aussenbahnen 2, 3 und einer gewellten Mittelbahn 4 gebildete Wellpappe benützt, deren zwischen den Bahnen 2, 3, 4 gebildete Hohlräume Kammern 5, 6 bilden, die mit einem metallischen Material gefüllt sind. Das Material besteht hierbei aus einzelnen Metallkügelchen. Die Kammern 5, 6, siehe Fig. 1, verlaufen horizontal, was wesentlich ist, um eine in vertikaler Richtung geringe Höhe der Masse zu erreichen. Die Längenausdehnung in horizontaler Richtung dagegen kann beliebig lang sein. Günstig ist auch, wenn die durch die Bahnen 2, 3, 4 gebildeten Wände der Kammern 5, 6 biegeweich sind. Die Bahnen 2, 3, 4 können deshalb nicht nur aus Pappe bestehen, sie können auch aus einem anderen biegeweichen Material sein.1 and 2, a corrugated cardboard formed from two outer webs 2, 3 and a corrugated central web 4 is used, the cavities formed between the webs 2, 3, 4 forming chambers 5, 6 which are made of a metallic material are filled. The material consists of individual metal balls. The chambers 5, 6, see FIG. 1, run horizontally, which is essential in order to achieve a small height of the mass in the vertical direction. The length dimension in the horizontal direction, however, can be of any length. It is also advantageous if the walls of the chambers 5, 6 formed by the webs 2, 3, 4 are flexible. The webs 2, 3, 4 can therefore not only consist of cardboard, they can also be made of another flexible material.

Das in Fig. 3 und 4 dargestellte Bauelement 1 ist demjenigen nach Fig. 1 und 2 ähnlich. Es sind auch hier Kammern 7 gebildet, die jedoch beulenförmig geformt und durch eine Bahn 8 abgedeckt sind. Die Kammern 7 sind nebeneinander und zueinander versetzt angeordnet sowie ebenfalls mit einem metallischen Material gefüllt.The component 1 shown in FIGS. 3 and 4 is similar to that of FIGS. 1 and 2. Chambers 7 are also formed here, but are shaped like a bulge and are covered by a web 8. The chambers 7 are arranged next to one another and offset from one another and are also filled with a metallic material.

In Fig. 5 ist ein weiteres Bauelement für die Schalldämmung dargestellt, welches z. B. aus einer Weichfaserplatte 9 hergestellt ist. In die Platte 9 sind Nuten 10 eingearbeitet, welche mit metallischer Masse gefüllt werden, worauf sie mit einer nichtdargestellten Bahn abgeschlossen werden. Wesentlich ist auch hier, dass das Material der Platte 9 biegeweich ist bzw. durch die eingearbeiteten Nuten 10 biegeweich wird. Die Nuten 10 können, wie aus Fig. 5 ersichtlich ist, beidseits vorgesehen werden. Die Platte 9 könnte jedoch auch nur auf einer Seite mit Nuten 10 versehen sein.In Fig. 5, a further component for sound insulation is shown, which, for. B. is made of a soft fiberboard 9. In the plate 9 grooves 10 are incorporated, which are filled with metallic mass, whereupon they are closed with a web, not shown. It is also important here that the material of the plate 9 is pliable or becomes pliable due to the incorporated grooves 10. The grooves 10 can, as can be seen from FIG. 5, be provided on both sides. However, the plate 9 could also be provided with grooves 10 on only one side.

Wie bereits erwähnt wurde, können die Wände der Kammern 5, 6, 7 aus verschiedenen Materialien bestehen, z. B. aus Papier, Kunststoff oder Metallen. Auch Materialien aus Holz- oder Mineralfasern, siehe Fig. 5, sind verwendbar. Im weiteren können auch Textilien zur Bildung der Kammern verwendet werden. Hierbei können beispielsweise zwei Stoffbahnen abgesteppt werden, wobei die pulverige oder körnige Masse zwischen den Nähten liegt. Werden hierbei lange und enge Kanäle gebildet, so sind diese in horizontaler Lage anzuordnen.As already mentioned, the walls of the chambers 5, 6, 7 can consist of different materials, e.g. B. made of paper, plastic or metals. Materials made of wood or mineral fibers, see Fig. 5, can also be used. Textiles can also be used to form the chambers. Here, for example, two panels of fabric can be stitched, the powdery or granular mass lying between the seams. If long and narrow channels are formed, they must be arranged in a horizontal position.

Das beschriebene Bauelement 1 kann für die Bildung von Wänden, Decken und Türplatten verwendet werden, wobei es zweckmässig auf einem formstabilen Träger befestigt wird, z. B. durch Kleben oder Leimen. Die Wirkung dieses Bauelementes sei an dem nachstehenden Beispiel gezeigt :

  • Wird eine Spanplatte von 19 mm Wandstärke allein für die Luftschalldämmung verwendet, so weist die Schalldämmzahl in Funktion der Frequenz im Bereich zwischen 1 500 und 2000 Hz Koinzidenz-Wirkungen auf, und es erfolgt hier der Einbruch in das Massengesetz. Wird nun diese Spanplatte mit einem Bauelement nach Fig. 1 belegt, so ist in dem wichtigen Bereich zwischen 100 und 4000 Hz keine Koinzidenz-Wirkung festzustellen. Während der Luftschall-Isolationsindex 1, (nach ISO-Empfehlung R 717/1968) 29 dB beträgt, steigt dieser Wert bei der mit dem Bauelement 1 nach Fig. 1 beschichteten Platte auf 40 dB und liegt bei einem Flächengewicht von 31 kg/m2 nur knapp unter dem theoretischen Wert von 42 dB. Dieses überraschende, von den bekannten Ausführungen völlig abweichende Verhalten hat vermutlich verschiedene Gründe.
The described component 1 can be used for the formation of walls, ceilings and door panels, it being conveniently attached to a dimensionally stable support, for. B. by gluing or gluing. The effect of this component is shown in the example below:
  • If a chipboard with a wall thickness of 19 mm is used solely for airborne sound insulation, the sound insulation number shows coincidence effects as a function of the frequency in the range between 1,500 and 2,000 Hz, and the mass law is broken here. If this chipboard is now covered with a component according to FIG. 1, no coincidence effect can be found in the important range between 100 and 4000 Hz. While the airborne sound insulation index 1 (according to ISO recommendation R 717/1968) is 29 dB, this value rises to 40 dB for the plate coated with component 1 according to FIG. 1 and has a basis weight of 31 kg / m 2 only slightly below the theoretical value of 42 dB. This surprising behavior, which is completely different from the known versions, is presumably due to various reasons.

Zunächst erhält man durch den beschriebenen Aufbau des Bauelementes eine über die gesamte Fläche des Bauelementes angenähert gleichmässige Verteilung des kugelförmigen metallischen Materials, ohne dass, wie dies bei einer durchgehenden vertikalen Kammer der Fall ist, ein Setzen des Materials auftreten könnte. Durch Unterteilen des Spalts, wie dies vor allem bei der Ausführung nach Fig. 2, aber auch angenähert bei Fig. 5, ersichtlich ist, in horizontal sich erstreckende Kammern wird das Setzen des Materials verhindert oder mindestens sehr stark vermindert. Dieselbe Wirkung wird auch durch die Anordnung kleiner Einzelkammern, wie bei der Ausführung nach Fig. 4, erreicht. Wesentlich ist in allen Fällen, dass die Kammerhöhe in vertikaler Richtung sehr gering ist, z. B. etwa 3-10 mm. Weiter wurde bei dem vorgenannten Beispiel als körniges Material ein metallisches Material in Form von Stahlkügelchen verwendet. Das kugelförmige Material hat eine geringe Korngrössenstreuung. Dies erleichtert eine regelmässige Schüttung, so dass ein Setzen oder Zusammensacken, wie dies gegebenenfalls bei anderen, z. B. mineralischen Materialien der Fall sein kann, praktisch nicht auftreten kann. Die Stahlkügelchen berühren sich gegenseitig nur punktförmig und geben daher Gewähr für geringste dynamische Steifigkeit. Bei mineralischen Granulaten, z. B. Sand, verzahnen sich die Einzelkörner, wobei deren freie Beweglichkeit aufgehoben wird. Diese vermutlich nachteilige Erscheinung tritt bei den metallischen kugelförmigen Teilchen nicht auf. Im übrigen ist die innere Dämpfung des metallischen Granulats wegen seiner grösseren spezifischen Masse grösser als diejenige von Sand.First of all, the described construction of the component provides an approximately uniform distribution of the spherical metallic material over the entire surface of the component, without the material, as is the case with a continuous vertical chamber, settling. By dividing the gap, as can be seen above all in the embodiment according to FIG. 2, but also approximately in FIG. 5, into horizontally extending chambers, the setting of the material is prevented or at least greatly reduced. The same effect is also achieved by the arrangement of small individual chambers, as in the embodiment according to FIG. 4. It is essential in all cases that the chamber height in the vertical direction is very low, e.g. B. about 3-10 mm. Furthermore, in the aforementioned example, a metallic material in the form of steel balls was used as the granular material. The spherical material has a small grain size scatter. This facilitates regular pouring, so that setting or slumping, as may be the case with others, e.g. B. mineral materials may be the case, can not occur practically. The steel balls only touch each other in a punctiform manner and therefore guarantee the lowest dynamic rigidity. In the case of mineral granules, e.g. B. sand, the individual grains interlock, whereby their free mobility is canceled. This presumably disadvantageous appearance does not occur with the metallic spherical particles. Moreover, the internal damping of the metallic granulate is greater than that of sand because of its larger specific mass.

Claims (3)

1. Component (1) for airborne-souncPin platelike construction for incorporation into walls, ceilings and doors, which has a plurality of chambers (5, 6, 7, 10) separated from another by flexible walls (2, 3, 4) and filled with a granular or particulate material and subdivided in the vertical direction, characterized in that the chambers (5, 6, 7, 10) are filled with a metallic, substantially spherical material.
2. Component according to claim 1, characterized in that the extension of the chambers in the vertical direction is 3 to 10 mm.
3. Component according to claim 1 or 2, characterized in that the chambers are slots (10) incorporated into a board (9), e. g. a soft fibreboard, and which are sealed by a flexible covering.
EP79901617A 1978-12-11 1980-06-17 Sound insulation construction element Expired EP0020628B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1253178A CH639453A5 (en) 1978-12-11 1978-12-11 COMPONENT FOR AIR SOUND INSULATION.
CH12531/78 1978-12-11

Publications (2)

Publication Number Publication Date
EP0020628A1 EP0020628A1 (en) 1981-01-07
EP0020628B1 true EP0020628B1 (en) 1983-02-16

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EP79901617A Expired EP0020628B1 (en) 1978-12-11 1980-06-17 Sound insulation construction element

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US4923034A (en) * 1987-11-26 1990-05-08 Matsushita Electric Works, Ltd. Vibration-controlling member
US5014815A (en) * 1989-06-26 1991-05-14 Grumman Aerospace Corporation Acoustic liner
US5025888A (en) * 1989-06-26 1991-06-25 Grumman Aerospace Corporation Acoustic liner
US4969535A (en) * 1989-06-26 1990-11-13 Grumman Aerospace Corporation Acoustic liner
EP0540704A1 (en) * 1991-05-22 1993-05-12 SULZER, Hans Dietrich Structure for reducing the amount of sound energy radiated by a solid wall
US5744763A (en) * 1994-11-01 1998-04-28 Toyoda Gosei Co., Ltd. Soundproofing insulator
DE19709620A1 (en) 1997-03-08 1998-09-24 Jun Karl Limberger Soundproofing surface component
JPH1169589A (en) * 1997-08-20 1999-03-09 Harness Sogo Gijutsu Kenkyusho:Kk Sound absorber and cable reel having the sound absorber
DE19882737T1 (en) * 1997-10-07 2000-09-21 Besin Bv Method of making a wall
IT1302685B1 (en) * 1998-10-16 2000-09-29 Teloni Spandotel Di Spano Dome COMPOSITE SOUND ABSORBING ELEMENT AND PANEL MADE WITH THIS ELEMENT.
ATE339555T1 (en) * 1999-11-25 2006-10-15 Calenberg Ingenieure Planmaess SOUNDPROOFING ELEMENT AND SOUNDBARDING WALL
MY136373A (en) * 2003-08-26 2008-09-30 Boral Plasterboard Malaysia Sdn Bhd A building panel assembly
US7178630B1 (en) * 2004-08-30 2007-02-20 Jay Perdue Acoustic device for wall mounting for diffusion and absorption of sound
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JP2008160230A (en) * 2006-12-21 2008-07-10 Victor Co Of Japan Ltd Speaker system
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UA84352U (en) * 2010-12-08 2013-10-25 Общество С Ограниченной Ответственностью «Вольф Бавария» Flat finishing element
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WO1980001184A1 (en) 1980-06-12
IT1127679B (en) 1986-05-21
CH639453A5 (en) 1983-11-15
EP0020628A1 (en) 1981-01-07
SE8005621L (en) 1980-08-08
NL7920159A (en) 1980-09-30
BE880515A (en) 1980-04-01
AT368226B (en) 1982-09-27
GB2051925B (en) 1983-06-15
ATA905179A (en) 1982-01-15
JPS55500949A (en) 1980-11-13
DE2953356C1 (en) 1991-05-02
DE2953356D2 (en) 1980-12-18
GB2051925A (en) 1981-01-21
US4441581A (en) 1984-04-10
IT7928002A0 (en) 1979-12-07

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