EP3477963B1 - Lautsprechersystem - Google Patents

Lautsprechersystem Download PDF

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Publication number
EP3477963B1
EP3477963B1 EP18000468.1A EP18000468A EP3477963B1 EP 3477963 B1 EP3477963 B1 EP 3477963B1 EP 18000468 A EP18000468 A EP 18000468A EP 3477963 B1 EP3477963 B1 EP 3477963B1
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EP
European Patent Office
Prior art keywords
membrane
loudspeaker
housing
diaphragm
speaker system
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Application number
EP18000468.1A
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English (en)
French (fr)
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EP3477963A1 (de
Inventor
Rafael Kubisz
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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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • 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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1041—Mechanical or electronic switches, or control elements
    • 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
    • H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • 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
    • H04R1/028—Casings; Cabinets ; Supports therefor; Mountings therein associated with devices performing functions other than acoustics, e.g. electric candles
    • 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
    • H04R2201/023—Transducers incorporated in garment, rucksacks or the like
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/025—Diaphragms comprising polymeric materials

Definitions

  • the invention relates to a loudspeaker system.
  • Loudspeaker systems or, according to another common name sound converters are used to convert electrical energy into sound waves.
  • membranes are usually set into mechanical vibrations.
  • Loudspeakers are used in loudspeaker boxes, radios, televisions, radio receivers, handheld radios, test receivers, cell phones and MP3 players.
  • EP 2 736 269 A1 published May 28, 2014, discloses in Figure 4 a waterproof loudspeaker system with a loudspeaker which consists of a housing and a flat membrane, the housing of the loudspeaker being covered with a polymer foam.
  • the invention is based on the object of expanding the possible uses of loudspeaker systems, especially in mobile devices.
  • an exemplary loudspeaker system has an oval basic shape.
  • the top is essentially formed by the membrane 1, which consists of an approximately 3 mm thick flat plate made of hard-foamed PVC (FOREX).
  • Drivers mounted in a freely floating manner behind the diaphragm 1 enable the user to come into contact with the diaphragm and thus also feel the sound pressure and thus make music perceptible and not just audible.
  • the membrane 1 is connected to the housing 3 by means of a rubber bead 2.
  • This is advantageously made from extruded polypropylene, which gives it high strength and low weight.
  • the elasticity of the material enables control elements in the form of push buttons 4.5 to be inserted into the To integrate housing 3, as they are provided in the embodiment on the underside of the speaker system.
  • the membrane 1 also becomes a control surface by means of pushbuttons and magnetic switches embedded on the inside of the device.
  • a particularly advantageous embodiment of the loudspeaker system according to the invention is obtained when a coupling process with other loudspeaker systems can be triggered by magnetic switches integrated in the membrane. This coupling can take place, for example, via Bluetooth or Wifi and several speaker systems can then play the same music synchronously.
  • This "Pick my Tune” functionality can be triggered, for example, by joining two loudspeaker systems on their membrane side.
  • the production of the housing 3 from extruded polypropylene provides a high degree of flexibility in the design of the housing. Due to the low weight of the material, the housing 3 can also serve as a floating body. Its elasticity has the effect that the internal sound pressure generated by the membrane 1 is reproduced via the housing 3 and, when used on a water surface, the housing transmits sound waves to the water.
  • housing 3 is coupled to other hollow bodies such as empty boxes or plastic containers by touching them, sound is transmitted to them, thereby producing a better reproduction of low frequencies.
  • the music being played can be made perceptible, which can support relaxation techniques and therapies, for example.
  • Fig. 2 shows a cross-section through an exemplary loudspeaker system with membrane 1, rubber surround 2, housing 3 and a frame for the control electronics for the loudspeaker which in particular includes an accumulator including charging interface, as well as signal processor unit, acoustic converter and communication units based on Bluetooth and WiFi with a signal source but also with other speaker systems.
  • an accumulator including charging interface, as well as signal processor unit, acoustic converter and communication units based on Bluetooth and WiFi with a signal source but also with other speaker systems.
  • the combination of the membrane 1 according to the invention made of a flat plate made of a hard-foamed plastic with a housing made of extruded polypropylene enables particularly robust, versatile loudspeaker systems with exceptional sound properties.
  • the design according to the invention with control elements also enables several loudspeaker systems to be coupled in a simple manner.
  • display elements such as LEDs can also be integrated into the membrane 1 or the housing 3.
  • the charging interface 7 can be implemented wirelessly.
  • the possibility of inductive charging makes the charging process easy to handle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Description

  • Die Erfindung betrifft ein Lautsprechersystem.
  • Lautsprechersysteme oder nach einer weiteren üblichen Bezeichnung Schallwandler werden zur Umwandlung elektrischer Energie in Schallwellen eingesetzt. Dazu werden meist Membranen in mechanische Schwingungen versetzt.
  • Verwendet werden Lautsprecher unter anderem in Lautsprecherboxen, Radios, Fernsehgeräten, Funkempfängern, Handsprechfunkgeräten, Messempfängern, Mobiltelefonen und MP3-Player.
  • Vor allem bei mobilen Geräten, die auch im Freien eingesetzt werden, ist eine robuste Ausführungsform erforderlich, die gegenüber Umwelteinflüssen wie insbesondere Feuchtigkeit widerstandsfähig ist.
  • EP 2 736 269 A1 , veröffentlicht am 28. Mai 2014, offenbart in Abbildung 4 ein wasserdichtes Lautsprechersystem mit einem Lautsprecher, der aus einem Gehäuse und einer flachen Membran besteht, wobei das Gehäuse des Lautsprechers mit einem Polymerschaum bedeckt ist.
  • Der Erfindung liegt die Aufgabe zugrunde, die Einsatzmöglichkeiten von Lautsprechersystemen vor allem bei mobilen Geräten zu erweitern.
  • Diese Aufgabe wird erfindungsgemäß gelöst mit einem Lautsprechersystem gemäß Anspruch 1.
  • Vorteilhafte Ausgestaltungen ergeben sich aus den Unteransprüchen.
  • Die Erfindung wird anhand von in den Figuren dargestellten Ausführungsbeispielen näher erläutert. Es zeigen beispielhaft:
    • Fig. 1 ein erfindungsgemäßes Lautsprechersystem in drei unterschiedlichen Ansichten, von oben, seitlich und von unten.
    • Fig. 2 einen Querschnitt durch ein erfindungsgemäßes Lautsprechersystem.
  • Wie aus Fig. 1 ersichtlich weist ein beispielhaftes Lautsprechersystem eine ovale Grundform auf. Die Oberseite wird im Wesentlichen von der Membran 1 gebildet, die aus einer etwa 3 mm starken ebenen Platte aus hartgeschäumtem PVC (FOREX) besteht.
  • Durch die ebene Ausführung der Membran kann sich bei Einsatz des Lautsprechersystems in Wasser keine stehende Wassersäule auf dieser bilden und der Klang wird durch Wasser nicht negativ beinträchtig.
  • Der Einsatz von hartgeschäumtem PVC (FOREX), oder Materialien mit ähnlichen Eigenschaften, beispielsweise auf Basis von thermoplastischem Polyurethan oder extrudiertem Polypropylen ermöglicht eine extrem harte und leichte Bauweise der Membran, womit muss diese nicht mehr zusätzlich durch einen Grill oder eine andere Abdeckung geschützt werden muss.
  • Dies ermöglicht es, dass die Membran auch durch Design, Druck, Bilder Logos und Motive veredelt wird und somit zur wesentlichen Gestaltung des äußerlichen Designs herangezogen werden kann.
  • Durch frei schwebend montierte Treiber hinter der Membran 1 wird es ermöglicht, dass der Benutzer mit der Membran in Berührung kommt und somit den Schalldruck auch spüren kann und Musik somit spürbar und nicht nur hörbar wird.
  • Mittels Gummisicke 2 ist die Membran 1 mit dem Gehäuse 3 verbunden. Dieses ist in vorteilhafter Weise aus extrudiertem Polypropylen hergestellt, wodurch es hohe Festigkeit bei geringem Gewicht aufweist. Die Elastizität des Materials ermöglicht es, Bedienelemente in Form von Drucktastern 4,5 in das Gehäuse 3 zu integrieren, wie sie bei dem Ausführungsbeispiel auf der Unterseite des Lautsprechersystemes vorgesehen sind.
  • Auch die Membran 1 wird durch an der Geräteinnenseite eingelassene Drucktasten und Magnetschalter zur Bedienfläche.
  • Sie kann weiterhin als Projektionsfläche für Videos verwendet werden.
  • Eine besonders vorteilhafte Ausgestaltung des erfindungsgemäßen Lautsprechersystems erhält man dann, wenn durch in der Membran integrierte Magnetschalter ein Kopplungsvorgang mit weiteren Lautsprechersystemen ausgelöst werden kann.
    Diese Kopplung kann beispielsweise mittels Bluetooth oder Wifi erfolgen und mehrere Lautsprechersysteme können dann synchron dieselbe Musik abspielen.
  • Diese "Pick my Tune" Funktionaliät kann beispielsweise dadurch ausgelöst werden, dass zwei Lautsprechersysteme an ihrer Membranseite aneinander gefügt werden.
  • Es ist dabei kein Drücken von zusätzlichen Tasten erforderlich, eine kurze Berührung zwischen den Membranen (Übereinander Legen) ist ausreichend um die Magnetschalter auszulösen. Es reicht auch ein kurzfristiges übereinander Positionieren, d.h. es bleibt ein Luftspalt zwischen den Membranen und eine physische Berührung ist nicht notwendig um die Magnetschalter zu aktivieren.
  • Durch die Herstellung des Gehäuses 3 aus extrudiertem Polypropylen ist eine hohe Flexibilität bei der Formgestaltung des Gehäuses gegeben. Durch das geringe Gewicht des Materials kann das Gehäuse 3 auch als Schwimmkörper dienen. Seine Elastizität bewirkt, dass der durch die Membran 1 erzeugte innere Schalldruck über das Gehäuse 3 wiedergegeben wird und beim Einsatz auf einer Wasseroberfläche das Gehäuse Schallwellen auf das Wasser überträgt.
  • Wenn das Gehäuse 3 an andere Hohlkörper wie leere Schachteln oder Plastikbehältnisse durch Berührung angekoppelt wird, wird Schall auf diese übertragen und dadurch eine bessere Wiedergabe von tiefen Frequenzen bewirkt.
  • Wenn das Lautsprechersystem am Körper, im Nacken oder auf den Bauch des menschlichen Körpers platziert wird, kann die abgespielte Musik spürbar gemacht werden, womit beispielsweise Entspannungstechniken und Therapien unterstützt werden können.
  • Fig. 2 zeigt einen Querschnitt durch ein beispielhaftes Lautsprechersystem mit Membran 1, Gummisicke 2, Gehäuse 3 und einem Rahmen für die Ansteuerelektronik für den Lautsprecher die insbesondere einen Akkumulator samt Ladeschnittstelle, sowie Signalprozessoreinheit, Akustikwandler und Kommunikationseinheiten auf Basis von Bluetooth und WiFi mit einer Signalquelle aber auch mit anderen Lautsprechersystemen umfasst.
  • Die Kombination der erfindungsgemäßen Membran 1 aus einer ebenen Platte aus einem hartgeschäumtem Kunststoff mit einem Gehäuse aus extrudiertem Polypropylen ermöglicht besonders robuste, vielseitig einsetzbare Lautsprechersysteme mit außergewöhnlichen Klangeigenschaften.
  • Durch die erfindungsgemäße Ausgestaltung mit Bedienelementen wird weiterhin auf einfache Weise die Kopplung mehrerer Lautsprechersysteme ermöglicht.
  • Zusätzlich zu den Bedienelementen können auch Anzeigeelemente wie LEDs in die Membran 1 oder das Gehäuse 3 integriert werden.
  • Die Ladeschnittstelle 7 kann drahtlos ausgeführt werden. Durch die Möglichkeit des induktiven Ladens wird eine einfache Handhabe des Ladevorgangs möglich.
    • Bezugszeichenliste
    • 1
    Membran
    2
    Gummisicke
    3
    Gehäuse
    4
    Drucktaste Plus
    5
    Drucktaste Minus
    6
    Klebeband
    7
    Ladeschnittstelle

Claims (2)

  1. Lautsprechersystem mit einer Membran (1) und mit einem Gehäuse (3), wobei die Membran (1) aus einer ebenen Platte aus einem hartgeschäumten Kunststoff besteht, die mittels einer Gummisicke (2) mit dem Gehäuse (3) verbunden ist, das aus extrudiertem Polypropylen mit einer eine Wiedergabe des durch die Membran (1) erzeugten inneren Schalldrucks über das Gehäuse (3) bewirkenden Elastizität hergestellt ist.
  2. Lautsprechersystem nach Anspruch 1, wobei die Membran (1) aus einer etwa 3 mm starken ebenen Platte aus hartgeschäumtem PVC besteht.
EP18000468.1A 2017-05-19 2018-05-18 Lautsprechersystem Active EP3477963B1 (de)

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AT2152017 2017-05-19

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EP3477963B1 true EP3477963B1 (de) 2020-11-18

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FI20225511A1 (fi) * 2022-06-10 2023-12-11 Kiulu Company Vesitiivis kaiutinjärjestely, menetelmä vesitiiviin kaiutinjärjestelyn valmistamiseksi sekä tuote, joka sisältää vesitiiviin kaiutinjärjestelyn

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Publication number Priority date Publication date Assignee Title
SK26498A3 (en) * 1995-09-02 1998-09-09 New Transducers Ltd Noticeboards incorporating loudspeakers
CN103718567B (zh) * 2011-07-21 2017-09-08 喜恩吉股份有限公司 安装自共振型发声扬声器的方法
TWI536850B (zh) * 2013-07-29 2016-06-01 雅瑟音響股份有限公司 音箱及其製造方法
US20150222985A1 (en) * 2014-01-31 2015-08-06 Add|On Technology Waterproof Speaker

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