WO2009049753A1 - Metal sandwich unit with integrated flat-panel loudspeaker - Google Patents

Metal sandwich unit with integrated flat-panel loudspeaker Download PDF

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Publication number
WO2009049753A1
WO2009049753A1 PCT/EP2008/008047 EP2008008047W WO2009049753A1 WO 2009049753 A1 WO2009049753 A1 WO 2009049753A1 EP 2008008047 W EP2008008047 W EP 2008008047W WO 2009049753 A1 WO2009049753 A1 WO 2009049753A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal
unit
metal sandwich
sandwich unit
metal layer
Prior art date
Application number
PCT/EP2008/008047
Other languages
German (de)
French (fr)
Inventor
Hans Bommer
Wolfgang Schlott
Original Assignee
Puren Gmbh
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
Application filed by Puren Gmbh filed Critical Puren Gmbh
Priority to DE112008002707T priority Critical patent/DE112008002707A5/en
Publication of WO2009049753A1 publication Critical patent/WO2009049753A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
    • H04R2201/021—Transducers or their casings adapted for mounting in or to a wall or ceiling

Definitions

  • the invention relates to a metal sandwich unit according to the preamble of claim 1.
  • Metal sandwich units having a lower metal layer and an upper metal layer are already known.
  • the invention is based on the object of providing a metal sandwich unit that can be actively used for an architectural design. It is achieved according to the invention by the features of claim 1. Further embodiments emerge from the subclaims.
  • the invention is based on a metal sandwich unit having a lower metal layer and an upper metal layer.
  • the metal sandwich unit has at least one loudspeaker unit inserted between the metal layers.
  • a metal sandwich unit can be provided which actively transforms the architectural design into an architectural design through the integrated loudspeaker unit. can be used because the inserted between the metal layers speaker unit is invisible.
  • the loudspeaker unit preferably comprises at least one flat-panel loudspeaker.
  • the metal sandwich unit can be made particularly compact.
  • a filling material, which is introduced between the metal layers, is formed by a PU foam.
  • a weight of the metal sand weight unit can advantageously be kept low.
  • At least one metal layer has a structuring.
  • the metal layer is particularly resistant to bending.
  • a "structuring" is to be understood in particular as meaning that the metal layer has elevations and / or depressions which are in particular grooved and / or recessed, and which preferably make up more than 1% of the metal layer.
  • At least one of the metal layers is formed substantially of aluminum.
  • the term "essentially” should be understood to mean, in particular, that the metal layer comprises at least 50% aluminum.
  • At least one of the metal layers is formed essentially of steel.
  • the metal layer at least 50% steel includes. Steel, especially stainless steel, is advantageously corrosion resistant and easy to clean. In principle, however, other types of metal are conceivable in addition to aluminum and steel.
  • the metal sandwich unit comprises a signal transmission unit which is intended to transmit a signal to the loudspeaker unit.
  • signal transmission unit which is intended to transmit a signal to the loudspeaker unit.
  • "provided” is understood to mean specially equipped, designed and / or programmed, thereby allowing the speaker unit to be easily connected to an audio source.
  • the signal transmission unit comprises a connection unit that can be electrically contacted from the outside.
  • electrically contactable is to be understood as meaning, in particular, an electrical contact via a mechanical connection.
  • a wireless signal transmission can also be provided for the connection unit and the signal transmission unit, for example by means of a radio connection unit, or particularly advantageously by means of an induction connection unit.
  • the metal sanding unit can be used particularly flexibly.
  • a power supply unit can basically be realized wired via an electrical contact or wirelessly via an induction device.
  • the metal sandwich unit has a defined thickness between 8 cm and 16 cm. Thereby, the metal sandwich unit can be used as a wall.
  • the loudspeaker unit is first introduced between the two metal layers.
  • the filler material is subsequently introduced, for which purpose a spraying process in which the filling material is foamed and / or foamed is particularly advantageous.
  • a metal sandwich unit according to the invention can be produced particularly easily.
  • Fig. 1 shows a metal sandwich unit with a speaker unit
  • Fig. 2 shows a method for producing the metal sandwich unit. Description of the embodiment
  • FIG. 1 shows a metal sandwich unit with a lower metal layer 10 and an upper metal layer 11, between which a loudspeaker unit 12, which has a flat loudspeaker 13, is inserted.
  • a gap between the two metal layers 10, 11 is filled with a filling material 14, which is formed by a PU foam.
  • the speaker unit 12 is attached to the inside of the lower metal layer 10.
  • the upper metal layer 11 has a structuring 15 which has been impressed into the upper metal layer 11 by means of an embossing roll 22.
  • the lower metal layer 10 is essentially made of steel, the upper metal layer 11 essentially of aluminum.
  • the speaker unit 12 comprises a signal transmission unit 16 which is provided to transmit a signal, in particular an audio signal, from an audio source to the area loudspeaker 13.
  • the signal transmission unit 16 has an electrically contactable from the outside
  • Connection unit 17 which has a cable 18 and a connector 19.
  • the connector 19, which is intended to receive a plug from the outside, is embedded in the lower metal layer 10 and connected via the cable 18 with the area speaker 13.
  • the cable 18 can be led out without a plug connection from the metal sandwich unit and connected directly to the audio source.
  • the connector 19 can be arranged on each side of the metal sandwich unit.
  • a wireless signal transmission unit is also conceivable.
  • the metal sanding unit has a defined thickness 20 that can be set between 8 cm and 18 cm in a metal sandwich unit manufacturing process.
  • the manufacturing method essentially comprises a step for processing the metal layers 10, 11, in which the metal layers 10, 11 are brought to a distance corresponding to the defined thickness 20 by means of suitable rollers 21 and guides. Subsequently, the structuring 15 is embossed into the upper metal layer 11 by means of the embossing roller 22 and the loudspeaker unit 12 with the connected connection unit 17 is inserted between the metal layers 10, 11.
  • the filling material 14 is injected between the metal layers 10, 11 by means of a filling material introduction device 23.
  • the speaker unit 12 is fixed by the filling material 14 and the two metal layers 10, 11 are connected.

Abstract

The invention is based on a metal sandwich unit with a lower metal layer (10) and an upper metal layer (11). It is proposed that the metal sandwich unit have at least one loudspeaker unit (12) inserted between the metal layers (10, 11).

Description

METALLSANDWICHEINHEIT MIT INTEGRIERTEM FLÄCHENLAUTSPRECHER METAL SANDWATER UNIT WITH INTEGRATED SURFACE SPEAKER
Stand der TechnikState of the art
Die Erfindung betrifft, eine Metallsandwicheinheit nach dem Oberbegriff des Anspruchs 1.The invention relates to a metal sandwich unit according to the preamble of claim 1.
Es sind bereits Metallsandwicheinheiten mit einer unteren Metallschicht und einer oberen Metallschicht bekannt.Metal sandwich units having a lower metal layer and an upper metal layer are already known.
Der Erfindung liegt insbesondere die Aufgabe zugrunde, eine aktiv zu einer architektonischen Gestaltung einsetzbare Me- tallsandwicheinheit bereitzustellen. Sie wird gemäß der Erfindung durch die Merkmale des Anspruchs 1 gelöst. Weitere Ausgestaltungen ergeben sich aus den Unteransprüchen.In particular, the invention is based on the object of providing a metal sandwich unit that can be actively used for an architectural design. It is achieved according to the invention by the features of claim 1. Further embodiments emerge from the subclaims.
Die Erfindung geht aus von einer Metallsandwicheinheit mit einer unteren Metallschicht und einer oberen Metallschicht.The invention is based on a metal sandwich unit having a lower metal layer and an upper metal layer.
Es wird vorgeschlagen, dass die Metallsandwicheinheit zumindest eine zwischen die Metallschichten eingebrachte Lautsprechereinheit aufweist. Dadurch kann eine Metallsandwicheinheit bereitgestellt werden, die durch die integrierte Lautsprechereinheit aktiv zu einer architektonischen Gestaltung ver- wendet werden kann, da die zwischen die Metallschichten eingebrachte Lautsprechereinheit unsichtbar ist.It is proposed that the metal sandwich unit has at least one loudspeaker unit inserted between the metal layers. As a result, a metal sandwich unit can be provided which actively transforms the architectural design into an architectural design through the integrated loudspeaker unit. can be used because the inserted between the metal layers speaker unit is invisible.
Vorzugsweise umfasst die Lautsprechereinheit zumindest einen Flächenlautsprecher. Dadurch kann die Metallsandwicheinheit besonders kompakt gestaltet werden.The loudspeaker unit preferably comprises at least one flat-panel loudspeaker. As a result, the metal sandwich unit can be made particularly compact.
Weiter wird vorgeschlagen, dass ein Füllmaterial, das zwischen die Metallschichten eingebracht ist, durch einen PU- Schaum gebildet ist. Dadurch kann ein Gewicht der Metallsandwichteinheit vorteilhaft niedrig gehalten werden.It is further proposed that a filling material, which is introduced between the metal layers, is formed by a PU foam. As a result, a weight of the metal sand weight unit can advantageously be kept low.
Ferner wird vorgeschlagen, dass zumindest eine Metallschicht eine Strukturierung aufweist. Dadurch wird die Metallschicht besonders biegesteif. Unter einer „Strukturierung" soll insbesondere verstanden werden, dass die Metallschicht Erhebungen und/oder Vertiefungen aufweist, die insbesondere nutför- mig erhaben und/oder vertieft ausgeführt sind, und die vorzugsweise mehr als 1% der Metallschicht ausmachen.It is also proposed that at least one metal layer has a structuring. As a result, the metal layer is particularly resistant to bending. A "structuring" is to be understood in particular as meaning that the metal layer has elevations and / or depressions which are in particular grooved and / or recessed, and which preferably make up more than 1% of the metal layer.
Vorteilhafterweise ist zumindest eine der Metallschichten im Wesentlichen aus Aluminium gebildet. 'Unter „im Wesentlichen" soll in diesem Zusammenhang insbesondere verstanden werden, dass die Metallschicht zumindest 50% Aluminium umfasst. Durch eine erfindungsgemäße Ausgestaltung kann das Gewicht der Metallsandwicheinheit weiter reduziert werden.Advantageously, at least one of the metal layers is formed substantially of aluminum. In this context, the term "essentially" should be understood to mean, in particular, that the metal layer comprises at least 50% aluminum. By means of an embodiment according to the invention, the weight of the metal sandwich unit can be further reduced.
Weiter wird vorgeschlagen, dass zumindest eine der Metallschichten im Wesentlichen aus Stahl gebildet ist. Unter „im Wesentlichen" seil in diesem Zusammenhang insbesondere verstanden werden, dass die Metallschicht zumindest 50% Stahl umfasst. Stahl, insbesondere Edelstahl, ist vorteilhaft korrosionsbeständig und leicht zu reinigen. Prinzipiell sind jedoch neben Aluminium und Stahl auch andere Metallarten denkbar .It is further proposed that at least one of the metal layers is formed essentially of steel. By "substantially" rope in this context in particular be understood that the metal layer at least 50% steel includes. Steel, especially stainless steel, is advantageously corrosion resistant and easy to clean. In principle, however, other types of metal are conceivable in addition to aluminum and steel.
Ferner wird vorgeschlagen, dass die Metallsandwicheinheit eine Signalübertragungseinheit umfasst, die dazu vorgesehen ist, ein Signal zu der Lautsprechereinheit zu übertragen. Unter „vorgesehen" soll insbesondere speziell ausgestattet, ausgelegt und/oder programmiert verstanden werden. Dadurch kann die Lautsprechereinheit einfach an eine Audioquelle angeschlossen werden.It is further proposed that the metal sandwich unit comprises a signal transmission unit which is intended to transmit a signal to the loudspeaker unit. In particular, "provided" is understood to mean specially equipped, designed and / or programmed, thereby allowing the speaker unit to be easily connected to an audio source.
Vorteilhafterweise umfasst die Signalübertragungseinheit eine von außen elektrisch kontaktierbare Verbindungseinheit. Unter elektrisch kontaktierbar soll in diesem Zusammenhang i-nsbe- sondere ein elektrischer Kontakt über eine mechanische Verbindung verstanden werden. Eine solche Signalübertragungseinheit ist besonders kostengünstig herstellbar. Alternativ kann für die Verbindungseinheit und die Signalübertragungseinheit auch eine drahtlose Signalübertragung vorgesehen werden, wie beispielsweise mittels einer Funkverbindungseinheit, oder besonders vorteilhaft, mittels einer Induktionsverbindungsein- heit. Dadurch wird die Metallsandwicheinheit besonders flexi- bei einsetzbar. Unabhängig von der Signalübertragungseinheit kann eine Energieversorgungseinheit grundsätzlich kabelgebunden über einen elektrischen Kontakt oder kabellos über eine Induktionsvorrichtung realisiert werden.Advantageously, the signal transmission unit comprises a connection unit that can be electrically contacted from the outside. In this context, electrically contactable is to be understood as meaning, in particular, an electrical contact via a mechanical connection. Such a signal transmission unit is particularly inexpensive to produce. Alternatively, a wireless signal transmission can also be provided for the connection unit and the signal transmission unit, for example by means of a radio connection unit, or particularly advantageously by means of an induction connection unit. As a result, the metal sanding unit can be used particularly flexibly. Regardless of the signal transmission unit, a power supply unit can basically be realized wired via an electrical contact or wirelessly via an induction device.
Weiter wird vorgeschlagen, dass die Metallsandwicheinheit eine definierte Dicke zwischen 8 cm und 16 cm aufweist. Dadurch kann die Metallsandwicheinheit als eine Wand eingesetzt werden.It is further proposed that the metal sandwich unit has a defined thickness between 8 cm and 16 cm. Thereby For example, the metal sandwich unit can be used as a wall.
Zur Herstellung einer erfindungsgemäßen Metallsandwicheinheit wird vorgeschlagen, dass zuerst die Lautsprechereinheit zwischen die zwei Metallschichten eingebracht wird. Vorteilhafterweise wird anschließend das Füllmaterial eingebracht werden, wobei dazu ein Spritzverfahren, bei dem das Füllmaterial aufschäumt und/oder aufgeschäumt wird, besonders vorteilhaft ist. Dadurch lässt sich eine erfindungsgemäße Metallsandwicheinheit besonders einfach herstellen.To produce a metal sandwich unit according to the invention, it is proposed that the loudspeaker unit is first introduced between the two metal layers. Advantageously, the filler material is subsequently introduced, for which purpose a spraying process in which the filling material is foamed and / or foamed is particularly advantageous. As a result, a metal sandwich unit according to the invention can be produced particularly easily.
Zeichnungdrawing
Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In den Zeichnungen ist ein Ausführungsbeispiel der Erfindung dargestellt. Die Zeichnungen, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombinati- on. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen .Further advantages emerge from the following description of the drawing. In the drawings, an embodiment of the invention is shown. The drawings, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.
Es zeigen:Show it:
Fig. 1 eine Metallsandwicheinheit mit einer Lautsprechereinheit undFig. 1 shows a metal sandwich unit with a speaker unit and
Fig. 2 ein Verfahren zur Herstellung der Metallsandwicheinheit . Beschreibung des AusführungsbeispielsFig. 2 shows a method for producing the metal sandwich unit. Description of the embodiment
Figur 1 zeigt eine Metallsandwicheinheit mit einer unteren Metallschicht 10 und einer oberen Metallschicht 11, zwischen die eine Lautsprechereinheit 12, die einen Flächenlautsprecher 13 aufweist, eingebracht ist. Ein Zwischenraum zwischen den beiden Metallschichten 10, 11 ist mit einem Füllmaterial 14 aufgefüllt, das durch einen PU-Schaum gebildet ist. Die Lautsprechereinheit 12 ist innen an der unteren Metallschicht 10 angebracht. Die obere Metallschicht 11 weist eine Strukturierung 15 auf, die mittels einer Prägewalze 22 in die obere Metallschicht 11 eingeprägt wurde. Die untere Metallschicht 10 ist im Wesentlichen aus Stahl gebildet, die obere Metallschicht 11 im Wesentlichen aus Aluminium.FIG. 1 shows a metal sandwich unit with a lower metal layer 10 and an upper metal layer 11, between which a loudspeaker unit 12, which has a flat loudspeaker 13, is inserted. A gap between the two metal layers 10, 11 is filled with a filling material 14, which is formed by a PU foam. The speaker unit 12 is attached to the inside of the lower metal layer 10. The upper metal layer 11 has a structuring 15 which has been impressed into the upper metal layer 11 by means of an embossing roll 22. The lower metal layer 10 is essentially made of steel, the upper metal layer 11 essentially of aluminum.
Die Lautsprechereinheit 12 umfasst eine Signalübertragungseinheit 16, die dazu vorgesehen ist, ein Signal, wie insbesondere ein Audiosignal, von einer Audioquelle zu dem Flächenlautsprecher 13 zu übertragen. Die Signalsübertragungs- einheit 16 weist eine von außen elektrisch kontaktierbareThe speaker unit 12 comprises a signal transmission unit 16 which is provided to transmit a signal, in particular an audio signal, from an audio source to the area loudspeaker 13. The signal transmission unit 16 has an electrically contactable from the outside
Verbindungseinheit 17 auf, die ein Kabel 18 und eine Steckverbindung 19 aufweist. Die Steckverbindung 19, die dazu vorgesehen ist, von außen einen Stecker aufzunehmen, ist in die untere Metallschicht 10 eingelassen und über das Kabel 18 mit dem Flächenlautsprecher 13 verbunden. Alternativ kann das Kabel 18 auch ohne eine Steckverbindung aus der Metallsandwicheinheit herausgeführt und direkt mit der Audioquelle verbunden werden. Grundsätzlich kann die Steckverbindung 19 an jeder Seite der Metallsandwicheinheit angeordnet werden. Alter- nativ zu einer drαhtgebundenen Verbindungseinheit 17 ist auch eine drahtlose Signalübertragungseinheit denkbar. Die Metallsandwicheinheit weist eine definierte Dicke 20 auf, die in einem Fertigungsverfahren der Metallsandwicheinheit zwischen 8 cm und 18 cm eingestellt werden kann. Das Fertigungsverfahren umfasst im Wesentlichen einen Schritt zur Be- arbeitung der Metallschichten 10, 11, in dem die Metallschichten 10, 11 mittels geeigneter Walzen 21 und Führungen auf einen Abstand gebracht werden, der der definierten Dicke 20 entspricht. Anschließend wird in die obere Metallschicht 11 mittels der Prägewalze 22 die Strukturierung 15 eingeprägt und die Lautsprechereinheit 12 mit der angeschlossenen Verbindungseinheit 17 wird zwischen die Metallschichten 10, 11 eingelegt. In einem weiteren Arbeitsschritt wird das Füllmaterial 14 mit Hilfe einer Füllmaterialeinbringvorrichtung 23 zwischen die Metallschichten 10, 11 eingespritzt. Das Füllma- terial 14, das als PU-Schaum ausgebildet ist, schäumt dadurch auf, wodurch ein verbleibender Freiraum zwischen den Metallschichten 10, 11 ausgefüllt wird. Außerdem wird durch das Füllmaterial 14 die Lautsprechereinheit 12 fixiert und die beiden Metallschichten 10, 11 werden verbunden. Connection unit 17, which has a cable 18 and a connector 19. The connector 19, which is intended to receive a plug from the outside, is embedded in the lower metal layer 10 and connected via the cable 18 with the area speaker 13. Alternatively, the cable 18 can be led out without a plug connection from the metal sandwich unit and connected directly to the audio source. In principle, the connector 19 can be arranged on each side of the metal sandwich unit. As an alternative to a hard-wired connection unit 17, a wireless signal transmission unit is also conceivable. The metal sanding unit has a defined thickness 20 that can be set between 8 cm and 18 cm in a metal sandwich unit manufacturing process. The manufacturing method essentially comprises a step for processing the metal layers 10, 11, in which the metal layers 10, 11 are brought to a distance corresponding to the defined thickness 20 by means of suitable rollers 21 and guides. Subsequently, the structuring 15 is embossed into the upper metal layer 11 by means of the embossing roller 22 and the loudspeaker unit 12 with the connected connection unit 17 is inserted between the metal layers 10, 11. In a further working step, the filling material 14 is injected between the metal layers 10, 11 by means of a filling material introduction device 23. The filling material 14, which is formed as a PU foam, thereby foams, whereby a remaining space between the metal layers 10, 11 is filled. In addition, the speaker unit 12 is fixed by the filling material 14 and the two metal layers 10, 11 are connected.
Bezugszeichenreference numeral
10 Metallschicht 18 Kabel10 metal layer 18 cable
11 MetallSchicht 19 Steckverbindung11 Metal layer 19 Plug connection
12 Lautsprechereinheit 20 Dicke12 speaker unit 20 Thickness
13 Flächenlautsprecher 21 Walzen13 area loudspeakers 21 rollers
14 Füllmaterial 22 Prägewalze14 filling material 22 embossing roll
15 Strukturierung 23 Füllmaterialeinbring15 Structuring 23 Fill material insertion
16 SignalübertragungseinVorrichtung heit16 signal transmission device
17 Verbindungseinheit 17 connection unit

Claims

Ansprüche claims
1. Metallsandwicheinheit mit einer unteren Metallschicht1. Metal sandwich unit with a lower metal layer
(10) und einer oberen Metallschicht (11), gekennzeichnet durch zumindest eine zwischen die Metallschichten (10, 11) eingebrachte Lautsprechereinheit (12) .(10) and an upper metal layer (11), characterized by at least one between the metal layers (10, 11) introduced speaker unit (12).
2. Metallsandwicheinheit nach Anspruch 1, dadurch gekennzeichnet, dass die Lautsprechereinheit (12) zumindest einen Flächenlautsprecher (13) umfasst.2. metal sandwich unit according to claim 1, characterized in that the loudspeaker unit (12) comprises at least one area loudspeaker (13).
3. Metallsandwicheinheit nach Anspruch 1 oder 2, gekennzeichnet durch ein durch einen PU-Schaum gebildetes Füllmaterial (14), das zwischen die Metallschichten (10, 11) eingebracht ist.3. metal sandwich unit according to claim 1 or 2, characterized by a formed by a PU foam filling material (14) which is introduced between the metal layers (10, 11).
4. Metallsandwicheinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zumindest eine Metallschicht (11) eine Strukturierung (15) aufweist. 4. metal sandwich unit according to one of the preceding claims, characterized in that at least one metal layer (11) has a structuring (15).
5. Metallsandwicheinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zumindest eine der Metallschichten (11) im Wesentlichen aus Aluminium gebildet ist.5. metal sandwich unit according to one of the preceding claims, characterized in that at least one of the metal layers (11) is formed substantially of aluminum.
6. Metallsandwicheinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zumindest eine der Metallschichten (10) im Wesentlichen aus Stahl gebildet ist.6. metal sandwich unit according to one of the preceding claims, characterized in that at least one of the metal layers (10) is formed substantially of steel.
7. Metallsandwicheinheit nach einem der vorhergehenden Ansprüche, gekennzeichnet durch eine Signalübertragungseinheit (16), die dazu vorgesehen ist, ein Signal zu der Lautsprechereinheit (12) zu übertragen.7. Metal sandwich unit according to one of the preceding claims, characterized by a signal transmission unit (16) which is provided to transmit a signal to the loudspeaker unit (12).
8. Metallsandwicheinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Signalübertragungseinheit (16) eine von außen elektrisch kontaktierbare Verbindungseinheit (17) umfasst.8. metal sandwich unit according to one of the preceding claims, characterized in that the signal transmission unit (16) comprises a connection unit (17) electrically contactable from the outside.
9. Metallsandwicheinheit nach einem der vorhergehenden Ansprüche, gekennzeichnet durch eine definierte Dicke (20) zwischen 8 cm und 16 cm. 9. metal sandwich unit according to one of the preceding claims, characterized by a defined thickness (20) between 8 cm and 16 cm.
PCT/EP2008/008047 2007-10-10 2008-09-23 Metal sandwich unit with integrated flat-panel loudspeaker WO2009049753A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112008002707T DE112008002707A5 (en) 2007-10-10 2008-09-23 Metal sandwich unit with integrated area speaker

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200720014156 DE202007014156U1 (en) 2007-10-10 2007-10-10 Steel sandwich unit
DE202007014156.4 2007-10-10

Publications (1)

Publication Number Publication Date
WO2009049753A1 true WO2009049753A1 (en) 2009-04-23

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ID=38825805

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PCT/EP2008/008047 WO2009049753A1 (en) 2007-10-10 2008-09-23 Metal sandwich unit with integrated flat-panel loudspeaker

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DE (2) DE202007014156U1 (en)
WO (1) WO2009049753A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6085485A (en) * 1997-12-11 2000-07-11 Murdock; Douglas G. Load bearing pre-fabricated building construction panel
US20040129492A1 (en) * 2002-10-28 2004-07-08 Alejandro Bertagni Planar diaphragm loudspeaker and related methods
EP1516720A1 (en) * 2003-09-19 2005-03-23 Basf Aktiengesellschaft Composite element comprising a polyurethane adhesion promoter
US20050147273A1 (en) * 1995-09-02 2005-07-07 New Transducers Limited Acoustic device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050147273A1 (en) * 1995-09-02 2005-07-07 New Transducers Limited Acoustic device
US6085485A (en) * 1997-12-11 2000-07-11 Murdock; Douglas G. Load bearing pre-fabricated building construction panel
US20040129492A1 (en) * 2002-10-28 2004-07-08 Alejandro Bertagni Planar diaphragm loudspeaker and related methods
EP1516720A1 (en) * 2003-09-19 2005-03-23 Basf Aktiengesellschaft Composite element comprising a polyurethane adhesion promoter

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DE112008002707A5 (en) 2010-10-14
DE202007014156U1 (en) 2007-12-13

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