EP1077014B1 - PANNEAU ACOUSTIQUE PLAT avec son vibreur - Google Patents

PANNEAU ACOUSTIQUE PLAT avec son vibreur Download PDF

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Publication number
EP1077014B1
EP1077014B1 EP99923592A EP99923592A EP1077014B1 EP 1077014 B1 EP1077014 B1 EP 1077014B1 EP 99923592 A EP99923592 A EP 99923592A EP 99923592 A EP99923592 A EP 99923592A EP 1077014 B1 EP1077014 B1 EP 1077014B1
Authority
EP
European Patent Office
Prior art keywords
voice coil
driver
acoustic panel
moving coil
coil bobbin
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 - Lifetime
Application number
EP99923592A
Other languages
German (de)
English (en)
Other versions
EP1077014A1 (fr
Inventor
Wolfgang Bachmann
Gerhard Krump
Hans-Jürgen Regl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harman Becker Automotive Systems GmbH
Original Assignee
Harman Becker Automotive Systems 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 Harman Becker Automotive Systems GmbH filed Critical Harman Becker Automotive Systems GmbH
Publication of EP1077014A1 publication Critical patent/EP1077014A1/fr
Application granted granted Critical
Publication of EP1077014B1 publication Critical patent/EP1077014B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H04R9/066—Loudspeakers using the principle of inertia
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
    • H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion

Definitions

  • the invention is concerned with the formation of drivers for flat. Sound panels, especially with the formation of drivers, which can be used as a prefabricated component in a variety of sound panels.
  • electrodynamic drivers To generate bending waves in the respective sound panel, this is excited by one or more electrodynamic drivers (shakers). Sound panels are also known, which are driven exclusively or combined with the above-mentioned electrodynamic drivers of piezoelectric bending oscillator discs. However, the subject of this application are only the electrodynamic drivers.
  • a driver for a flat sound panel which has a voice coil bobbin on which a voice coil is mounted, and at least one permanent magnet, a yoke assembly and an air gap in which the voice coil bobbin dives with the voice coil, the voice coil bobbin with the permanent magnet and / or the yoke assembly is connected by means of an elastic membrane.
  • These drivers are essentially formed by a voice coil provided with a voice coil former, at least one permanent magnet and a scrubschussußan extract; wherein the voice coil dives into an existing air gap by the mutual arrangement of the various components.
  • the yoke assembly also includes such arrangements that merely direct or direct the magnetic field lines.
  • the air gap in the sense of this application is not to be understood merely as a gap between components into which the voice coil former or the voice coil is immersed.
  • the combination between sound panel and electrodynamic drivers is solved by placing the drivers on one side of the sound panel or integrating them into it. If the drivers are attached to one side of the sound panel, it is possible to resort to driver principles that are also used to drive cone speakers. In detail, this is realized so that the unit formed from the yoke assembly and the respective permanent magnet is connected by means of brackets with the Klangpaneel.
  • the voice coil which acts on the Klangpaneel and is also connected for this purpose with this, can be centered in this embodiment on the known from the cone speakers ago Zentriermembranen.
  • the centering diaphragm which is connected to the voice coil bobbin, attached to the holder.
  • the invention has for its object to provide a driver for a sound panel, which are pre-produced for a variety of applications and can be integrated without further centering in Klangpaneel.
  • a driver is created, which can be integrated without further centering in a sound panel.
  • the voice coil support pot-shaped and connected according to claim 3 its bottom to the Klangpaneel, in contrast to the usual ring-shaped voice coil carriers, a relatively large-scale excitation of the sound panel caused.
  • the floor itself or a plate arranged between the floor and the sound panel has a diameter which is smaller than or equal to the diameter of the clamping coil support.
  • the base itself or the plate is designed as a piezoelectric bending wave scanner, because in this case its contacting is simplified by the close spatial connection of two drivers. In this case, however, to avoid a mutual. Influencing driver and piezoelectric bending wave oscillator, the piezoelectric bending wave oscillator with the voice coil carrier of the driver to be decoupled connected.
  • Fig. 1 shows a sound panel 11, which consists of a core layer 11 'formed of rigid foam and two cover layers 11 "connected to the core layer 11' Further, Fig. 1 shows an electromagnetic driver 12, which in a cutout in Klangpaneel 11 is used.
  • This driver 12 is essentially formed by a pot-shaped yoke assembly 14, a permanent magnet 15 and a voice coil 17 provided with a voice coil 17.
  • the permanent magnet is inserted and connected in the cup-shaped return yoke assembly. Since the diameter of the permanent magnet 15 is smaller than the inner diameter of the cup-shaped yoke assembly 14, there is a mutual radial distance between these parts (14, 15), which is referred to as air gap 18 in the context of this application.
  • the voice coil bobbin 17 which is likewise pot-shaped, is inserted into the air gap 18 at its edge 17 'provided with the voice coil 16.
  • the bottom 17 “of the voice coil bobbin 17 is under Intermediate arrangement of a plate 19 connected to the bottom 20 of the cutout 13.
  • a separate plate 19 is not necessary if the plate 19 is replaced by a corresponding design of the bottom 17 "of the voice coil bobbin 17 and / or the bottom 20 of the cutout 13.
  • the plate 19 has a smaller diameter compared to the voice coil former 17.
  • This reduction in diameter causes an improved impression of bending waves in the Klangpaneel 11, because on the one hand, the force is concentrated on a small area and, moreover, this also for the production of.
  • the remote from the permanent magnet 15 bottom of the yoke assembly is provided with an anchor plate 21 and connected via this with the Klangpaneel 11.
  • the edge 14 'of the yoke assembly 14 is provided with a ring 22 which surrounds the edge Extended 14 'in the direction of the plate 19.
  • a Zentriermembranen 23 is present, which extends in the air gap 18 between the ring 22 and the edge 17 'of the voice coil bobbin 17.
  • the plate 19 is designed as a piezoelectric bending wave disk, advantages arise with respect to the contacting when the plate 19 designed as a bending wave disk is already in the factory, ie before its connection to the bottom 20 was already connected to the voice coil bobbin 17.
  • the centering diaphragm 23 and / or the bottom 17 "of the voice coil bobbin 17 breakthroughs (not shown), through which spacers (not shown) can be inserted during assembly of the driver 12 shown in Fig. 1. If openings in the centering membrane 23 and / or the bottom 17 "are to be dispensed with, the required centering can be achieved also means of a centric guided by the permanent magnet 15 and the yoke assembly 17 pin (not shown), which depending on the design and only in the core layer 11 'can end.
  • Fig. 2 differs from the embodiment of FIG. 1 in that the ring 22 is replaced by a corresponding extension of the edge 14 'of the yoke assembly 14 and that the Zentriermembranen 23 is formed as a flat disc.
  • the centering diaphragm 23 is connected to the end faces 24 of the rim 14 'and the bottom 17 "of the voice coil bobbin 17, resulting in further manufacturing advantages.
  • the centering diaphragm 23 and / or the bottom 17 "of the voice coil bobbin 17 may be provided with corresponding apertures (not shown) for producing the centricity of the voice coil 16 to the permanent magnet 15.
  • FIG. 3 shows in more detail a voice coil carrier 17 for a driver for driving a sound panel 11 according to FIG. 1 or FIG. 2. 3 clearly shows that the edge 17 'of the voice coil bobbin 17 has a region 25 with reduced wall thickness and that the voice coil 16 is disposed in this region 25. Due to the relatively thick-walled design of the voice coil bobbin 17 ensures that required for the drive of the Klangpaneels 11 forces are transmitted largely free of deformation losses on the Klangpaneel 11. The thin-walled region 25 ensures that, despite the relatively thick-walled voice coil carrier 17 i.ü. the air gap 18 ( Figure 1) can be made very narrow and thus at the same time also very low loss.
  • stage 26 between the thin-walled portion 25 and the remaining voice coil bobbin acts as an additional anchorage of the voice coil 16 on the voice coil bobbin 17.
  • a centering diaphragm 23 is shown, which is curved and is connected to the voice coil bobbin 17.
  • the voice coil bobbin 17 is formed in two parts as shown in FIG. 4 and consists of a relatively thick-walled pot 27 and a thin-walled tube 27 '.
  • the tube 27 ', which is provided with the voice coil 16 is connected to the pot 27.
  • This bipartite nature of the voice coil bobbin 17 has the advantage that the unit of voice coil 16 and tube 27 'can be manufactured on devices which are also used in the manufacture of such cone speaker units.
  • the voice coil bobbin 17 is connected to the end faces 24 of the edge 14 'of the yoke assembly 14 by means of a flat centering diaphragm 23.
  • this plate is designed as a piezoelectric bending wave disc 19 'and inserted into the bottom 17 "of the voice coil bobbins 17 and decoupled with the voice coil bobbin 17 (not shown) connected.
  • This combination of piezoelectric bending wave disk 19 'and electromagnetic driver 12 has the advantage that it is available in a confined space for different frequency ranges optimized drivers (12, 19') are available.
  • FIG. 5 shows a further embodiment of a voice coil carrier 17 according to FIG. 3.
  • This one-piece voice coil bobbin 17 is designed so that its bottom 17 "has a reduced diameter compared to the diameter of the rim 17. If the voice coil bobbin 17 is formed as shown in FIG. 5, the use of the plate shown in FIG 19 can be dispensed with, because over the diameter of the bottom 17 "of a voice coil bobbin 17 as shown in FIG. 5, the desired distances A (Fig. 1) can be easily adjusted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Claims (7)

  1. Panneau acoustique avec un amplificateur (12) qui comporte
    - un support de bobine mobile (17) sur lequel est fixée une bobine mobile (16), et
    - au moins un aimant permanent (15),
    - un dispositif de retour (14) et
    - un entrefer (18) dans lequel est enfoncé le support de bobine mobile (17) avec la bobine mobile (16),
    le support de bobine mobile (17) étant relié à l'aimant permanent (15) et/ou au dispositif de retour (14) au moyen d'une membrane élastique (23),
    caractérisé en ce que
    le fond du dispositif de retour (14) dirigé en éloignement de l'aimant permanent (15) est muni d'une plaque d'ancrage (21) et est relié au panneau acoustique (11) directement à l'aide de celle-ci.
  2. Panneau acoustique avec un amplificateur (12) selon la revendication 1, caractérisé en ce que le support de bobine mobile (17) est conçu en forme de pot et comporte un fond (17") et un bord (17').
  3. Panneau acoustique avec un amplificateur (12) selon la revendication 2, caractérisé en ce que le fond (17") du support de bobine mobile (17) est relié au panneau acoustique (11).
  4. Panneau acoustique avec un amplificateur (12) selon la revendication 3, caractérisé en ce que le fond (17") ou une plaque (19) disposée entre le fond (17") et le panneau acoustique (11) présente un diamètre qui est inférieur ou égal au diamètre du bord (17') du support de bobine mobile (17).
  5. Panneau acoustique avec un amplificateur (12) selon la revendication 4, caractérisé en ce que le fond (17") lui-même ou la plaque (19) est conçu comme un disque ondulé flexible piézoélectrique (19').
  6. Panneau acoustique avec un amplificateur (12) selon l'une quelconque des revendications 2 à 5, caractérisé en ce que le bord (17') du support de bobine mobile (17) comporte une zone (25) d'épaisseur de paroi réduite et en ce que la bobine mobile (16) est reliée au support de bobine mobile (17) dans la zone (25) d'épaisseur de paroi réduite.
  7. Panneau acoustique avec un amplificateur (12) selon l'une quelconque des revendications 1 à 6, dans lequel l'amplificateur (12) est inséré dans une fraisure (13) dans le panneau acoustique (11).
EP99923592A 1998-05-15 1999-05-14 PANNEAU ACOUSTIQUE PLAT avec son vibreur Expired - Lifetime EP1077014B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19821860A DE19821860A1 (de) 1998-05-15 1998-05-15 Treiber für flaches Klangpaneel
DE19821860 1998-05-15
PCT/EP1999/003305 WO1999060820A1 (fr) 1998-05-15 1999-05-14 Vibreur pour panneau acoustique plat

Publications (2)

Publication Number Publication Date
EP1077014A1 EP1077014A1 (fr) 2001-02-21
EP1077014B1 true EP1077014B1 (fr) 2007-08-08

Family

ID=7867903

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99923592A Expired - Lifetime EP1077014B1 (fr) 1998-05-15 1999-05-14 PANNEAU ACOUSTIQUE PLAT avec son vibreur

Country Status (4)

Country Link
US (1) US6347149B1 (fr)
EP (1) EP1077014B1 (fr)
DE (2) DE19821860A1 (fr)
WO (1) WO1999060820A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE19821862A1 (de) 1998-05-15 1999-11-18 Nokia Deutschland Gmbh Schallwiedergabeanordnung
DE19821855A1 (de) * 1998-05-15 1999-11-18 Nokia Deutschland Gmbh Plattenlautsprecher
DE19825866A1 (de) 1998-06-10 1999-12-16 Nokia Deutschland Gmbh Plattenlautsprecher
DE19843079A1 (de) 1998-09-19 2000-03-23 Nokia Deutschland Gmbh Multiresonanzplatte
DE10001410C2 (de) * 2000-01-14 2001-12-06 Harman Audio Electronic Sys Flachlautsprecheranordnung
GB2368484B (en) * 2000-10-25 2004-06-16 B & W Loudspeakers Distributed mode panel type loudspeakers
DE10058104C2 (de) * 2000-11-23 2003-10-30 Harman Audio Electronic Sys Elektromagnetischer Treiber für einen Plattenlautsprecher
US7548854B2 (en) 2002-01-31 2009-06-16 Awi Licensing Company Architectural sound enhancement with pre-filtered masking sound
US20030142814A1 (en) * 2002-01-31 2003-07-31 Roy Kenneth P. Architectural sound enhancement with DTMF control
US20030142833A1 (en) * 2002-01-31 2003-07-31 Roy Kenneth P. Architectural sound enhancement with test tone diagnostics
US20030144847A1 (en) * 2002-01-31 2003-07-31 Roy Kenneth P. Architectural sound enhancement with radiator response matching EQ
US7109959B2 (en) 2002-02-06 2006-09-19 Andersen Corporation Multi-task window
US7180489B2 (en) * 2002-02-06 2007-02-20 Andersen Corporation Automated multi-task window assembly
US6983819B2 (en) * 2002-04-02 2006-01-10 Awi Licensing Company Entertainment sound panels
US20030198339A1 (en) * 2002-04-19 2003-10-23 Roy Kenneth P. Enhanced sound processing system for use with sound radiators
WO2005002926A1 (fr) * 2003-07-01 2005-01-13 Johnson Controls Gmbh Element d'equipement pour un vehicule, notamment pour un vehicule automobile, et utilisation d'un element d'equipement comme haut-parleur
WO2005115053A1 (fr) * 2004-05-14 2005-12-01 Sonion Nederland B.V. Transducteur electroacoustique a membrane double
DE102008046102B4 (de) * 2008-09-05 2016-05-12 Lisa Dräxlmaier GmbH Bedienelement mit spezifischer Rückmeldung
US8548186B2 (en) 2010-07-09 2013-10-01 Shure Acquisition Holdings, Inc. Earphone assembly
US8538061B2 (en) * 2010-07-09 2013-09-17 Shure Acquisition Holdings, Inc. Earphone driver and method of manufacture
US8549733B2 (en) 2010-07-09 2013-10-08 Shure Acquisition Holdings, Inc. Method of forming a transducer assembly
CN103765922B (zh) * 2012-08-30 2016-09-07 京瓷株式会社 声发生器、声发生装置以及电子设备
DE102014201693B3 (de) * 2014-01-30 2015-06-25 Kendrion Kuhnke Automation Gmbh Elektrischer Schwingungserreger
DE202014103821U1 (de) 2014-07-09 2014-09-09 Carmen Diegel Flexible elektrische Leiterstruktur
CN108141668B (zh) 2015-09-14 2024-04-16 翼声有限公司 音频转换器中或与其相关的改进
WO2018167538A1 (fr) 2017-03-15 2018-09-20 Wing Acoustics Limited Améliorations apportées ou se rapportant à des systèmes audio
TW201904310A (zh) 2017-03-22 2019-01-16 紐西蘭商威恩音響有限公司 有關於聲頻轉換器、薄型電子裝置及鉸鏈系統的系統、方法及裝置
KR20230100251A (ko) * 2021-12-28 2023-07-05 엘지디스플레이 주식회사 음향 장치 및 이를 포함하는 장치

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DE19757097B4 (de) 1997-12-20 2004-04-15 Harman Audio Electronic Systems Gmbh Schallwiedergabeanordnung
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Also Published As

Publication number Publication date
WO1999060820A1 (fr) 1999-11-25
US6347149B1 (en) 2002-02-12
DE19821860A1 (de) 1999-11-18
DE59914445D1 (de) 2007-09-20
EP1077014A1 (fr) 2001-02-21

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