EP0697963B1 - Musical instrument with a sounding board - Google Patents

Musical instrument with a sounding board Download PDF

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Publication number
EP0697963B1
EP0697963B1 EP94915124A EP94915124A EP0697963B1 EP 0697963 B1 EP0697963 B1 EP 0697963B1 EP 94915124 A EP94915124 A EP 94915124A EP 94915124 A EP94915124 A EP 94915124A EP 0697963 B1 EP0697963 B1 EP 0697963B1
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EP
European Patent Office
Prior art keywords
musical instrument
accordance
strands
layers
fibres
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EP94915124A
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German (de)
French (fr)
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EP0697963A1 (en
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Harry Hartmann
Dieter Hahn
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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
    • G10D3/00—Details of, or accessories for, stringed musical instruments, e.g. slide-bars
    • G10D3/22—Material for manufacturing stringed musical instruments; Treatment of the material

Definitions

  • the invention relates to a musical instrument with a Sound box made of fiber-reinforced plastic.
  • musical instrument is general here all sound generating or sound reproducing Designated instruments.
  • the invention is therefore based on the object To create a musical instrument of the generic type, that is easy and inexpensive to manufacture and has excellent sound qualities.
  • a musical instrument in which the Hollow fibers arranged unidirectionally in the strands are. Such unidirectional alignment the hollow fibers are relatively easy to manufacture. In addition, through the unidirectional Alignment achieved particularly good sound quality will.
  • the number of hollow fibers or the number, width and / or height of strands depending on the desired Damping property can be set.
  • the number of hollow fibers respectively the configuration of the strands is achieved that the sound qualities of every single musical instrument influenced and optimally adjusted can be.
  • the hollow fibers if necessary have a hygroscopic structure. This is very advantageous, possibly absorbing moisture and a Deterioration in the sound characteristics of the musical instrument to prevent or even through targeted Improve moisture addition.
  • At least one support layer is provided, which preferably as an outer cover layer is trained.
  • this support layer on the one hand a necessary strength of the resonance body reached and on the other hand this forms one editable layer, which is an individual design allowed the view of the musical instrument.
  • a musical instrument provided that several, at least two unidirectional, staggered aligned layers containing hollow fibers owns. By arranging multiple layers, each containing hollow fibers can be detailed The sound is influenced by the sound box. By preferably these layers to each other will be staggered at the same time an increase in stability of the resonance body is achieved.
  • Figure 1 shows a section of a resonance body 10, namely a longitudinal section through a Wall area 12.
  • the resonance body 10 has a carrier layer 14 and arranged one above first layer 16, a second layer 18 and one third layer 20, each made of fiber reinforced Plastic consists of individual strands of the in fibers of hollow fibers provided in the layers consist.
  • the support layer 14 forms simultaneously an outer cover layer and is preferably from a fleece containing carbon fibers or tissue.
  • FIG. 2 shows the structure of that shown in FIG. 1 Wall area clarified.
  • the Support layer 14 a fabric 22 made of carbon fibers, which are embedded in a plastic layer.
  • the Layers 16, 18 and 20 cut open here are shown, have unidirectional orientation Strands 24, of which individual hollow fiber strands 26 are. These are hatched for clarity shown.
  • Layers 16 and 18 each have alternately a strand 24 and a hollow fiber containing strand 26.
  • In the layer 20 are here for example between two hollow fiber strands 26 two strands 24 are provided.
  • the strands 24 respectively 26 of the individual layers 16, 18 and 20 to one another staggered.
  • the hollow fiber strands 26 in at least one of the Layers 16, 18 and 20 at an angle to the in the other layers provided hollow fiber strands 26 are arranged. This angle can range from 0 to 90 °. It is also conceivable that individual of the hollow fiber strands 26 by strands Glass and / or aramid fibers can be replaced.
  • transverse stabilization strands be provided, which in turn hollow, aramid, Include carbon and / or glass fibers. These strands serve the additional stabilization of the sound box. This stabilization in particular with very large resonance bodies, for example at Basses can be provided.
  • the resonance body described is produced by that the individual support layers 14 and Damping layers 16, 18 and 20 are superimposed embedded in a plastic matrix, which heated to harden the plastic mass and / or can be pressurized.
  • a plastic matrix By a corresponding design of the plastic matrix it is possible not just flat sound boxes manufacture, but these can be the same be so designed during curing that they for example, have curved shapes, such as this is known, among other things, from string instruments is.
  • the structure of the sound box can be so be chosen that only individual parts of the sound box separately from the described support and Damping layers are made, which then in a later step in a suitable manner be composed or in a special design is conceivable that a complete sound box in one piece from the layers mentioned will be produced. This may make them special good damping properties of the sound box accessible because between individual areas, for example side panels and bottoms seamless transition of the damping layers achieved is.
  • the resonance body can or part of the sound box on the Side of the support layer 14 are processed, for example by grinding so that a flat Area or, if appropriate, with appropriate thickness the support layer 14 has a curvature Surface arises.
  • the support layer 14 can subsequently can be designed arbitrarily, here for details should not be received.
  • microballoons in the resin of the plastic matrix can be introduced. It is also possible to just select some areas the layers with such microballoons Mistake.
  • materials for the microballoons for example inorganic silicates respectively Glass chosen.
  • the grain size can be between 0.01 and 0.018 mm.
  • resin fillers influencing the sound properties can talc, wood flour, glass fiber chips, Cotton flakes, aluminum powder, cork, other fiber materials or the like and are dependent on the desired properties of the resonance body selected.
  • the sound and damping properties of a sound box can also be influenced by this be that the resin of the plastic matrix with a Flexibilizer is provided, but here too Introduction of the flexibilizer in one or more Layers or even just in some areas can be done by one or more layers.
  • the properties of the sound box can also are influenced by the fact that resins, lacquers and / or adhesives at the top and / or bottom applied to the surface of the resonance body will. Depending on the desired sound characteristics can apply a continuous layer or just individual areas of the overall relationship Underside of the sound box wetted will.
  • the bottom layers of the Resonance body, the support and the support layer executed undamped. But here too Influencing the sound and damping properties Flexibilizers introduced and / or other additives, Microballoons or fibrous fillers be attached. These can vary from layer to layer Layer varies and possibly only in certain areas be introduced.
  • the hollow fibers mentioned here are basic filled with air. However, it is also conceivable that Hollow fibers to influence the damping properties with special gases and / or liquids to fill.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Stringed Musical Instruments (AREA)
  • Laminated Bodies (AREA)
  • Toys (AREA)

Abstract

The invention concerns a musical instrument with a sounding board made of fibre-reinforced plastic which is easy to manufacture and gives high sound quality. The fibre-reinforced plastic includes individual strands (26) made up of hollow fibres to damp the vibrations.

Description

Die Erfindung betrifft ein Musikinstrument mit einem Resonanzkörper aus faserverstärktem Kunststoff. Mit dem Begriff Musikinstrument werden hier allgemein alle tonerzeugenden beziehungsweise tonwiedergebenden Instrumente bezeichnet.The invention relates to a musical instrument with a Sound box made of fiber-reinforced plastic. The term musical instrument is general here all sound generating or sound reproducing Designated instruments.

Es ist bekannt, bei einen Resonanzkörper besitzenden Musikinstrumenten diese Resonanzkörper aus Holz anzufertigen. Solche Musikinstrumente können beispielsweise Klaviere, Flügel, Streich- und Zupfinstrumente sein. Bei der Herstellung der Resonanzkörper werden an das zu verwendende Holz sehr hohe Anforderungen gestellt. So muß dieses insbesondere sorgfältig ausgewählt, über einen langen Zeitraum gelagert und mit hohem handwerklichen Können verarbeitet werden. Damit wird klar, daß diese Resonanzkörper nur mit einem verhältnismäßig hohen Aufwand hergestellt werden können. Darüber hinaus ist nachteilig, daß aus Holz bestehende Resonanzkörper, das insbesondere bei Streichinstrumenten sehr dünn ausgebildet ist, bei unsachgemäßer Behandlung leicht zum Reißen neigt und darüber hinaus gegen Feuchtigkeit sehr empfindlich ist.It is known to have a sound box Musical instruments these wooden sound boxes to make. Such musical instruments can for example Pianos, grand pianos, strings and plucked instruments be. In the manufacture of the sound box become very high on the wood to be used Requirements. So this must in particular carefully selected over a long period of time stored and processed with high craftsmanship will. This makes it clear that these sound boxes only with a relatively high effort can be produced. It is also disadvantageous that wooden sound box, the very thin, especially with string instruments is easy with improper handling tends to tear and also against moisture is very sensitive.

Es ist auch bereits bekannt z.B. aus US-A-4 364 990, die Resonanzkörper aus faserverstärktem Kunststoff herzustellen. Diese erfüllen jedoch nicht annähernd die Erwartungen an eine gute Klangqualität.It is also known e.g. from US-A-4 364 990, the sound box to manufacture fiber-reinforced plastic. Meet these but not nearly the expectations good sound quality.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Musikinstrument der gattungsgemäßen Art zu schaffen, das einfach und preiswert herzustellen ist und über hervorragende Klangqualitäten verfügt.The invention is therefore based on the object To create a musical instrument of the generic type, that is easy and inexpensive to manufacture and has excellent sound qualities.

Diese Aufgabe wird bei einem Musikinstrument gemäß Oberbegriff des Anspruchs 1 mit Hilfe der in diesem Anspruch genannten Merkmale gelöst. Dadurch, daß der faserverstärkte Kunststoff einzelne Stränge zur Dämpfung der Schwingungen aus Hohlfasern aufweist, ergibt sich ein sehr guter Klang des Resonanzkörpers, wobei gleichzeitig dessen Haltbarkeit wesentlich besser ist als bei herkömmlichen Resonanzkörpern aus Holz oder Kunststoff.This task is performed on a musical instrument Preamble of claim 1 with the help of this Features mentioned claim solved. As a result of that the fiber-reinforced plastic single strands for damping the vibrations from hollow fibers, the sound of the sound box is very good, while maintaining its durability is much better than with conventional sound boxes made of wood or plastic.

Bevorzugt wird ein Musikinstrument, bei dem die Hohlfasern in den Strängen unidirektional angeordnet sind. Eine solche unidirektionale Ausrichtung der Hohlfasern ist relativ einfach herstellbar. Darüber hinaus können durch die unidirektionale Ausrichtung besonders gute Klanggualitäten erreicht werden. A musical instrument in which the Hollow fibers arranged unidirectionally in the strands are. Such unidirectional alignment the hollow fibers are relatively easy to manufacture. In addition, through the unidirectional Alignment achieved particularly good sound quality will.

Bei einem weiteren bevorzugten Ausführungsbeispiel des Musikinstruments ist die Anzahl der Hohlfasern beziehungsweise die Anzahl, Breite und/oder Höhe der Stränge in Abhängigkeit von der gewünschten Dämpfungseigenschaft festlegbar. Durch diese Variationsmöglichkeiten der Anzahl der Hohlfasern beziehungsweise der Ausgestaltung der Stränge wird erreicht, daß die Klangqualitäten jedes einzelnen Musikinstruments beeinflußt und optimal eingestellt werden kann.In another preferred embodiment of the musical instrument is the number of hollow fibers or the number, width and / or height of strands depending on the desired Damping property can be set. Through these variations the number of hollow fibers respectively the configuration of the strands is achieved that the sound qualities of every single musical instrument influenced and optimally adjusted can be.

In weiterer bevorzugter Ausgestaltung des Musikinstruments ist vorgesehen, daß die Hohlfasern gegebenenfalls eine hygroskopische Struktur besitzen. Hierdurch ist sehr vorteilhaft möglich, eventuell auftretende Feuchtigkeiten aufzunehmen und eine Verschlechterung der Klangeigenschaften des Musikinstruments zu verhindern oder sogar durch gezielte Feuchtigkeitszugabe zu verbessern.In a further preferred embodiment of the musical instrument it is provided that the hollow fibers, if necessary have a hygroscopic structure. This is very advantageous, possibly absorbing moisture and a Deterioration in the sound characteristics of the musical instrument to prevent or even through targeted Improve moisture addition.

In weiterer bevorzugter Ausgestaltung des Musikinstruments ist wenigstens eine Stützschicht vorgesehen, die vorzugsweise als eine äußere Deckschicht ausgebildet ist. Durch diese Stützschicht wird einerseits eine notwendige Festigkeit des Resonanzkörpers erreicht und andererseits bildet diese eine bearbeitbare Schicht, die eine individuelle Gestaltung der Ansicht des Musikinstruments gestattet. Bei der Bearbeitung der Stützschicht wird eine die Klangqualität verschlechternde Bearbeitung der die Hohlfasern enthaltenden Schicht vermieden. In a further preferred embodiment of the musical instrument at least one support layer is provided, which preferably as an outer cover layer is trained. Through this support layer on the one hand a necessary strength of the resonance body reached and on the other hand this forms one editable layer, which is an individual design allowed the view of the musical instrument. When processing the support layer, one becomes the Sound quality deteriorating editing of the Layer containing hollow fibers avoided.

In weiterer bevorzugter Ausgestaltung ist ein Musikinstrument vorgesehen, das mehrere, wenigstens zwei zueinander versetzt angeordnete, unidirektional ausgerichtete Hohlfasern enthaltende Schichten besitzt. Durch die Anordnung mehrerer Schichten, die jeweils Hohlfasern enthalten, kann eine detaillierte Klangbeeinflussung des Resonanzkörpers erfolgen. Indem diese Schichten vorzugsweise zueinander versetzt angeordnet werden, wird gleichzeitig eine Stabilitätserhöhung des Resonanzkörpers erreicht.In a further preferred embodiment there is a musical instrument provided that several, at least two unidirectional, staggered aligned layers containing hollow fibers owns. By arranging multiple layers, each containing hollow fibers can be detailed The sound is influenced by the sound box. By preferably these layers to each other will be staggered at the same time an increase in stability of the resonance body is achieved.

Weitere Ausgestaltungen der Erfindung ergeben sich aus den übrigen Unteransprüchen.Further refinements of the invention result from the other subclaims.

Die Erfindung wird nachfolgend in einem Ausführungsbeispiel anhand der zugehörigen Zeichnungen näher erläutert. Es zeigen:

Figur 1
einen Längsschnitt durch ein Teil einer Wandung eines Resonanzkörpers und
Figur 2
eine Draufsicht gemäß Figur 1 im Teilschnitt.
The invention is explained in more detail in an exemplary embodiment with reference to the accompanying drawings. Show it:
Figure 1
a longitudinal section through part of a wall of a resonance body and
Figure 2
a plan view of Figure 1 in partial section.

Figur 1 zeigt einen Ausschnitt eines Resonanzkörpers 10, und zwar einen Längsschnitt durch einen Wandungsbereich 12. Der Resonanzkörper 10 besitzt eine Trägerschicht 14 und darüber angeordnet eine erste Schicht 16, eine zweite Schicht 18 und eine dritte Schicht 20, die jeweils aus faserverstärktem Kunststoff besteht, wobei einzelne Stränge der in den Schichten vorgesehenen Fasern aus Hohlfasern bestehen. Die Stützschicht 14 bildet dabei gleichzeitig eine äußere Deckschicht und besteht vorzugsweise aus einem Kohlenstoffasern enthaltenden Vlies oder Gewebe.Figure 1 shows a section of a resonance body 10, namely a longitudinal section through a Wall area 12. The resonance body 10 has a carrier layer 14 and arranged one above first layer 16, a second layer 18 and one third layer 20, each made of fiber reinforced Plastic consists of individual strands of the in fibers of hollow fibers provided in the layers consist. The support layer 14 forms simultaneously an outer cover layer and is preferably from a fleece containing carbon fibers or tissue.

In der Figur 2 wird der Aufbau des in Figur 1 gezeigten Wandbereichs verdeutlicht. Bei dem hier dargestellten Ausführungsbeispiel besitzt die Stützschicht 14 ein Gewebe 22 aus Kohlenstoffasern, die in eine Kunststoffschicht eingebettet sind. Die Schichten 16, 18 und 20, die hier aufgeschnitten gezeigt sind, weisen unidirektional ausgerichtete Stränge 24 auf, von denen einzelne Hohlfaserstränge 26 sind. Diese sind zur Verdeutlichung schraffiert dargestellt. Die Schichten 16 und 18 weisen jeweils abwechselnd einen Strang 24 und einen Hohlfasern enthaltenden Strang 26 auf. In der Schicht 20 sind hier beispielsweise zwischen zwei Hohlfasersträngen 26 zwei Stränge 24 vorgesehen. Im gezeigten Ausführungsbeispiel sind die Stränge 24 beziehungsweise 26 der einzelnen Schichten 16, 18 und 20 zueinander versetzt angeordnet.FIG. 2 shows the structure of that shown in FIG. 1 Wall area clarified. With this one illustrated embodiment has the Support layer 14 a fabric 22 made of carbon fibers, which are embedded in a plastic layer. The Layers 16, 18 and 20 cut open here are shown, have unidirectional orientation Strands 24, of which individual hollow fiber strands 26 are. These are hatched for clarity shown. Layers 16 and 18 each have alternately a strand 24 and a hollow fiber containing strand 26. In the layer 20 are here for example between two hollow fiber strands 26 two strands 24 are provided. In the embodiment shown are the strands 24 respectively 26 of the individual layers 16, 18 and 20 to one another staggered.

Der in den Figuren 1 und 2 dargestellte Ausschnitt aus einem Resonanzkörper ist nur beispielhaft dargestellt. So können selbstverständlich mehrere Stützschichten 14 vorhanden sein oder auch mehr oder weniger die Hohlfaserstränge 26 enthaltenden Schichten 16, 18 und 20 vorgesehen sein. Es ist auch möglich, daß in einer oder auch mehreren Schichten 16, 18 und 20 die Stränge 24 und 26 nicht zueinander versetzt sind, so daß diese beispielsweise deckungsgleich oder aber genau versetzt zueinander verlaufen.The section shown in Figures 1 and 2 from a resonance body is only shown as an example. So of course several can Support layers 14 may be present or more or less containing the hollow fiber strands 26 Layers 16, 18 and 20 may be provided. It is also possible that in one or more Layers 16, 18 and 20 do not have strands 24 and 26 are offset from one another, so that, for example congruent or exactly offset from each other run.

In einem weiteren Ausführungsbeispiel ist denkbar, daß die Hohlfaserstränge 26 in wenigstens einer der Schichten 16, 18 und 20 in einem Winkel zu den in den anderen Schichten vorgesehenen Hohlfasersträngen 26 angeordnet sind. Dieser Winkel kann von 0 bis 90° gewählt sein. Weiterhin ist denkbar, daß einzelne der Hohlfaserstränge 26 durch Stränge aus Glas und/oder Aramidfasern ersetzt werden.In a further embodiment it is conceivable that the hollow fiber strands 26 in at least one of the Layers 16, 18 and 20 at an angle to the in the other layers provided hollow fiber strands 26 are arranged. This angle can range from 0 to 90 °. It is also conceivable that individual of the hollow fiber strands 26 by strands Glass and / or aramid fibers can be replaced.

Zu den bereits genannten Strängen 24 und Hohlfasersträngen 26 können in den Figuren 1 und 2 nicht dargestellte querverlaufende Stabilisierungsstränge vorgesehen sein, die ihrerseits Hohl-, Aramid-, Kohle- und/oder Glasfasern umfassen. Diese Stränge dienen der zusätzlichen Stabilisierung des Resonanzkörpers. Diese Stabilisierung wird insbesondere bei sehr großen Resonanzkörpern, beispielsweise bei Bässen, vorgesehen sein.To the strands 24 and hollow fiber strands already mentioned 26 can not in Figures 1 and 2 shown transverse stabilization strands be provided, which in turn hollow, aramid, Include carbon and / or glass fibers. These strands serve the additional stabilization of the sound box. This stabilization in particular with very large resonance bodies, for example at Basses can be provided.

Die Auswahl und der Aufbau der einzelnen in den Figuren 1 und 2 nur beispielhaft dargestellten Schichten richtet sich ausschließlich nach dem Musikinstrument, welches mit einem derartigen Resonanzkörper ausgestattet werden soll und nach möglichen zu erreichenden Dämpfungseigenschaften der jeweiligen Resonanzkörper. Beispielsweise ist denkbar, daß zusätzlich zu der außenliegenden Stützschicht 14 eine weitere, hier nicht dargestellte, innenliegende Stützschicht hinzukommt.The selection and structure of each in the Figures 1 and 2 shown only as an example Layers depend exclusively on the musical instrument, which with such a sound box should be equipped and according to possible damping properties of the respective Sound box. For example, it is conceivable that in addition to the outer backing 14 a further, not shown here, internal support layer is added.

Der beschriebene Resonanzkörper wird dadurch hergestellt, daß die einzelnen Stützschichten 14 und Dämpfungsschichten 16, 18 und 20 übereinanderliegend in eine Kunststoffmatrix eingebettet werden, die zur Aushärtung der Kunststoffmasse erwärmt und/oder unter Druck gesetzt werden kann. Durch eine entsprechende Ausgestaltung der Kunststoffmatrix ist es möglich, nicht nur ebene Resonanzkörper herzustellen, sondern diese können gleich bei der Aushärtung so ausgebildet sein, daß sie beispielsweise geschwungene Formen aufweisen, wie dies unter anderem von Streichinstrumenten bekannt ist. Der Aufbau der Resonanzkörper kann dabei so gewählt werden, daß nur einzelne Teile des Resonanzkörpers separat aus den beschriebenen Stütz- und Dämpfungsschichten hergestellt werden, die dann in einem späteren Arbeitsgang in geeigneter Weise zusammengesetzt werden oder aber in besonderer Ausgestaltung ist denkbar, daß ein kompletter Resonanzkörper einstückig aus den erwähnten Schichten hergestellt wird. Hierdurch sind gegebenenfalls besonders gute Dämpfungseigenschaften des Resonanzkörpers erreichbar, da zwischen einzelnen Bereichen, beispielsweise Seitenteilen und Böden, ein nahtloser Übergang der Dämpfungsschichten erreicht ist.The resonance body described is produced by that the individual support layers 14 and Damping layers 16, 18 and 20 are superimposed embedded in a plastic matrix, which heated to harden the plastic mass and / or can be pressurized. By a corresponding design of the plastic matrix it is possible not just flat sound boxes manufacture, but these can be the same be so designed during curing that they for example, have curved shapes, such as this is known, among other things, from string instruments is. The structure of the sound box can be so be chosen that only individual parts of the sound box separately from the described support and Damping layers are made, which then in a later step in a suitable manner be composed or in a special design is conceivable that a complete sound box in one piece from the layers mentioned will be produced. This may make them special good damping properties of the sound box accessible because between individual areas, for example side panels and bottoms seamless transition of the damping layers achieved is.

Nach Herstellung eines Rohlings kann der Resonanzkörper oder ein Teil des Resonanzkörpers auf der Seite der Stützschicht 14 bearbeitet werden, beispielsweise durch Schleifen, so daß eine ebene Fläche oder gegebenenfalls bei entsprechender Stärke der Stützschicht 14 eine Wölbungen aufweisende Fläche entsteht. Die Stützschicht 14 kann nachfolgend beliebig gestaltet werden, wobei hier auf Einzelheiten nicht eingegangen werden soll.After producing a blank, the resonance body can or part of the sound box on the Side of the support layer 14 are processed, for example by grinding so that a flat Area or, if appropriate, with appropriate thickness the support layer 14 has a curvature Surface arises. The support layer 14 can subsequently can be designed arbitrarily, here for details should not be received.

An dieser Stelle wird nochmals ausdrücklich darauf hingewiesen, daß das beschriebene Ausführungsbeispiel nur eine mögliche Variante darstellt. Es ist jede weitere Kombination von verschiedenen Dämpfungsschichten, insbesondere hinsichtlich der Anzahl und der Lage der Hohlfaserstränge und der Anordnung wenigstens einer Stützschicht, möglich.At this point it is explicitly stated again noted that the described embodiment is only one possible variant. It is every other combination of different Damping layers, especially with regard to the Number and position of the hollow fiber strands and the Arrangement of at least one support layer possible.

Zur Beeinflussung der Dämpfungs- und damit Klangeigenschaften des Resonanzkörpers können in einer oder mehreren Schichten sogenannte Microballons in das Harz der Kunstststoffmatrix eingebracht werden. Dabei ist es auch möglich, lediglich einige Bereiche der Schichten mit derartigen Microballons zu versehen. Als Materialien für die Microballons werden beispielsweise anorganische Silikate beziehungsweise Glas gewählt. Die Korngröße kann dabei zwischen 0,01 bis 0,018 mm liegen. Weitere typische, die Klangeigenschaften beeinflussende Harzfüllstoffe können Talkum, Holzmehl, Glasfaserschnitzel, Baumwollflocken, Aluminiumpulver, Kork, andere Fasermaterialien oder dergleichen sein und werden in Abhängigkeit der gewünschten Eigenschaften des Resonanzkörpers gewählt. To influence the damping and thus sound properties of the sound box can in one or several layers of so-called microballoons in the resin of the plastic matrix can be introduced. It is also possible to just select some areas the layers with such microballoons Mistake. As materials for the microballoons for example inorganic silicates respectively Glass chosen. The grain size can be between 0.01 and 0.018 mm. More typical, resin fillers influencing the sound properties can talc, wood flour, glass fiber chips, Cotton flakes, aluminum powder, cork, other fiber materials or the like and are dependent on the desired properties of the resonance body selected.

Die Klang- und Dämpfungseigenschaften eines Resonanzkörpers können auch noch dadurch beeinflußt werden, daß das Harz der Kunststoffmatrix mit einem Flexibilisator versehen wird, wobei auch hier das Einbringen des Flexibilisators in einer oder mehreren Schichten oder auch nur in einigen Bereichen von einer oder mehreren Schichten erfolgen kann.The sound and damping properties of a sound box can also be influenced by this be that the resin of the plastic matrix with a Flexibilizer is provided, but here too Introduction of the flexibilizer in one or more Layers or even just in some areas can be done by one or more layers.

Die Eigenschaften des Resonanzkörpers können überdies dadurch beeinflußt werden, daß Harze, Lacke und/oder Klebstoffe nachträglich oben und/oder unten auf der Oberfläche des Resonanzkörpers aufgetragen werden. Je nach den gewünschten Klangeigenschaften kann dabei eine durchgehende Schicht aufgetragen oder lediglich einzelne Bereiche der Oberbeziehungsweise Unterseite des Resonanzkörpers benetzt werden.The properties of the sound box can also are influenced by the fact that resins, lacquers and / or adhesives at the top and / or bottom applied to the surface of the resonance body will. Depending on the desired sound characteristics can apply a continuous layer or just individual areas of the overall relationship Underside of the sound box wetted will.

Grundsätzlich werden die untersten Schichten des Resonanzkörpers, die Stütz- und die Trägerschicht, ungedämpft ausgeführt. Aber auch hier können zur Beeinflussung der Klang- und Dämpfungseigenschaften Flexibilisatoren eingebracht und/oder andere Zusatzstoffe, Microballons oder faserige Füllstoffe beigefügt werden. Diese können dabei von Schicht zu Schicht variiert und auch gegebenenfalls nur bereichsweise eingebracht werden.Basically, the bottom layers of the Resonance body, the support and the support layer, executed undamped. But here too Influencing the sound and damping properties Flexibilizers introduced and / or other additives, Microballoons or fibrous fillers be attached. These can vary from layer to layer Layer varies and possibly only in certain areas be introduced.

Aus dem oben Gesagten wird ohne weiteres ersichtlich, daß bei der Herstellung von Resonanzkörpern der hier beschriebenen Art auch schäumbare Harze verwendet werden können und daß die Resonanzkörper für beliebige tonerzeugende oder tonabgebende Instrumente verwendet werden können, also nicht nur für Klaviere, Flügel, Cembali, Spinetts, Harfen, alle Streich-, Blas- und Zupfinstrumente, sondern auch für Schlagzeuge und Lautsprecher.From what has been said above, it is readily apparent that that in the manufacture of sound boxes of the type described here also foamable resins can be used and that the sound box for any sound generating or sound emitting Instruments can be used, not only for pianos, grand pianos, harpsichords, spinets, harps, all string, wind and plucked instruments, but also for drums and speakers.

Die hier erwähnten Hohlfasern sind grundsätzlich mit Luft gefüllt. Es ist jedoch auch denkbar, die Hohlfasern zur Beeinflussung der Dämpfungseigenschaften mit speziellen Gasen und/oder Flüssigkeiten zu füllen.The hollow fibers mentioned here are basic filled with air. However, it is also conceivable that Hollow fibers to influence the damping properties with special gases and / or liquids to fill.

Claims (18)

  1. Musical instruments having a resonance body of fibre-reinforced plastics material, characterised in that the fibre-reinforced plastics material has at least individual strands (26) of hollow fibres to dampen the oscillations.
  2. A musical instrument in accordance with Claim 1, characterised in that the strands (26) and additional strands (24) not containing hollow fibres run unidirectionally.
  3. A musical instrument in accordance with any one of the preceding Claims, characterised in that the strands (24) and/or the strands (26) comprise glass fibres and/or aramide fibres.
  4. A musical instrument in accordance with any one of the preceding Claims, characterised in that the strands (24) and (26) form a damping layer (16, 18, 20).
  5. A musical instrument in accordance with any one of the preceding Claims, characterised in that a plurality, at least two, damping layers are provided.
  6. A musical instrument in accordance with any one of the preceding Claims, characterised in that the number of hollow fibres can be determined as a function of the desired damping properties.
  7. A musical instrument in accordance with any one of the preceding Claims, characterised in that the hollow fibres optionally have a hygroscopic structure.
  8. A musical instrument in accordance with any one of the preceding Claims, characterised in that the number, width and/or height of the strands (24, 26) and/or layers (16, 18, 20) can be determined as a function of the desired damping properties.
  9. A musical instrument in accordance with any one of the preceding Claims, characterised in that the strands (24, 26) of individual layers (16, 18, 20) are staggered.
  10. A musical instrument in accordance with any one of the preceding Claims, characterised in that the strands (24, 26) of individual layers (16, 18, 20) are staggered at an angle.
  11. A musical instrument in accordance with any one of the preceding Claims, characterised in that the layers (16, 18, 20) have stabilizing strands extending transversely to the strands (24, 28).
  12. A musical instrument in accordance with any one of the preceding Claims, characterised in that the stabilising strands comprise hollow, glass, aramide and/or carbon fibres.
  13. A musical instrument in accordance with any one of the preceding Claims, characterised in that at least one supporting layer (14) is provided.
  14. A musical instrument in accordance with any one of the preceding Claims, characterised in that the supporting layer (14) is a woven fabric and/or nonwoven fabric containing carbon fibres.
  15. A musical instrument in accordance with any one of the preceding Claims, characterised in that the supporting layer (14) forms an outer covering.
  16. A musical instrument in accordance with any one of the preceding Claims, characterised in that the supporting layer (14) is not over the entire region of the resonance body (10).
  17. A musical instrument in accordance with any one of the preceding Claims, characterised in that only individual parts of the resonance body (10) are composed of fibre-reinforced plastics material having hollow fibres.
  18. A musical instrument in accordance with any one of the preceding Claims, characterised in that microballoons and/or expandable resins can be introduced into the fibre-reinforced plastics material.
EP94915124A 1993-04-28 1994-04-26 Musical instrument with a sounding board Expired - Lifetime EP0697963B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4313851A DE4313851C2 (en) 1993-04-28 1993-04-28 Musical instrument with a sound box
DE4313851 1993-04-28
PCT/EP1994/001312 WO1994025275A1 (en) 1993-04-28 1994-04-26 Musical instrument with a sounding board

Publications (2)

Publication Number Publication Date
EP0697963A1 EP0697963A1 (en) 1996-02-28
EP0697963B1 true EP0697963B1 (en) 1998-01-21

Family

ID=6486552

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Application Number Title Priority Date Filing Date
EP94915124A Expired - Lifetime EP0697963B1 (en) 1993-04-28 1994-04-26 Musical instrument with a sounding board

Country Status (4)

Country Link
EP (1) EP0697963B1 (en)
AT (1) ATE162465T1 (en)
DE (2) DE4313851C2 (en)
WO (1) WO1994025275A1 (en)

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WO2020161379A1 (en) * 2019-02-04 2020-08-13 Partones Oy Artificial wood

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DE19519384A1 (en) * 1995-05-26 1996-11-28 Henkel Kgaa Process for the preparation of alkyl oligoglucosides with a high degree of oligomerization
DE10051700A1 (en) * 2000-10-18 2002-05-02 Synotec Psychoinformatik Gmbh Labial or lingual pipe for organ is made partly o f fiber composite material including textile.
DE102015119382B3 (en) * 2015-11-10 2017-02-23 Peter Leube Device for damping acoustic interference in stringed instruments

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US3308706A (en) * 1963-04-30 1967-03-14 Brilhart Musical Instr Corp Woodwind instrument body
US3699836A (en) * 1970-09-09 1972-10-24 Leon Glasser Stringed musical instrument
CH543383A (en) * 1971-10-11 1973-10-31 Sulzer Ag Plastic plate
US4364990A (en) * 1975-03-31 1982-12-21 The University Of South Carolina Construction material for stringed musical instruments
US4348933A (en) * 1980-10-09 1982-09-14 Currier Piano Company, Inc. Soundboard assembly for pianos or the like
FR2598843B1 (en) * 1986-05-15 1989-02-10 Centre Nat Rech Scient COMPOSITE STRUCTURE FOR STRINGED INSTRUMENT HARMONY TABLE AND MANUFACTURING METHOD THEREOF
US5272000A (en) * 1987-05-22 1993-12-21 Guardian Industries Corp. Non-woven fibrous product containing natural fibers
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FR2649525B1 (en) * 1989-07-05 1991-10-11 Centre Nat Rech Scient MUSICAL INSTRUMENT WITH A BOW OF COMPOSITE MATERIAL
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Publication number Priority date Publication date Assignee Title
WO2020161379A1 (en) * 2019-02-04 2020-08-13 Partones Oy Artificial wood

Also Published As

Publication number Publication date
ATE162465T1 (en) 1998-02-15
DE4313851C2 (en) 1997-01-16
DE4313851A1 (en) 1994-11-03
EP0697963A1 (en) 1996-02-28
DE59405119D1 (en) 1998-02-26
WO1994025275A1 (en) 1994-11-10

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