EP1077014A1 - Vibreur pour panneau acoustique plat - Google Patents

Vibreur pour panneau acoustique plat

Info

Publication number
EP1077014A1
EP1077014A1 EP99923592A EP99923592A EP1077014A1 EP 1077014 A1 EP1077014 A1 EP 1077014A1 EP 99923592 A EP99923592 A EP 99923592A EP 99923592 A EP99923592 A EP 99923592A EP 1077014 A1 EP1077014 A1 EP 1077014A1
Authority
EP
European Patent Office
Prior art keywords
voice coil
driver
panel
coil bobbin
sound panel
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.)
Granted
Application number
EP99923592A
Other languages
German (de)
English (en)
Other versions
EP1077014B1 (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 Audio Electronic 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 Audio Electronic Systems GmbH filed Critical Harman Audio Electronic 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

Links

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, in particular with the formation of drivers which can be used as a prefabricated component in a large number of sound panels.
  • These drivers are essentially formed by a voice coil carrier provided with a voice coil, at least one permanent magnet and a yoke arrangement, the voice coil m immersing an existing air gap due to the mutual arrangement of the various components.
  • the inference arrangement also includes arrangements which only guide or guide the magnetic field lines.
  • the air gap is not merely to be understood as a gap between components into which the voice coil former or the voice coil is immersed. Rather, in connection with this application, everything is viewed as an air gap, ie all the areas in which the voice coil is exposed to the magnetic field lines of the permanent magnet or magnets.
  • the combination of sound panel and electrodynamic drivers is solved so that the drivers are placed on one side of the sound panel or integrated into it . If the drivers are placed on one side of the sound panel, you can use driver principles that are also used to drive cone speakers. In detail, this is realized in such a way that the unit formed from the yoke arrangement and the respective permanent magnets is connected to the sound panel by means of brackets.
  • the voice coil which acts on the sound panel and is also connected to it for this purpose, can be centered in this embodiment via the centering membranes known from the cone speakers. For this purpose, the centering membrane, which is connected to the voice coil former, is attached to the holding nng .
  • the invention is therefore based on the object of specifying a driver for a sound panel which is pre-produced for a large number of applications and can be integrated in the sound panel without further centering work. Presentation of the invention
  • the voice coil former is connected in the air gap to the Daue ⁇ nagneten and / or the yoke arrangement by means of an elastic membrane, a driver is created that can be integrated in a sound panel without further centering.
  • the voice coil support is pot-shaped and its base is connected to the sound panel in accordance with claim 3, a relatively large-area excitation of the sound panel is produced, in contrast to the otherwise conventional ring-shaped voice coil support.
  • the floor itself or a plate arranged between the floor and the sound panel has a Durcli knife which is less than / equal to the Durcli knife of the voice coil bobbin.
  • the base itself or the plate is designed as a piezoelectric flexible shaft oscillator, because in this case the close spatial connection of two drivers simplifies their contacting. In this case, however, in order to avoid mutual interference between the driver and the piezoelectric bending wave oscillator, the piezoelectric bending wave oscillator should be decoupled from the voice coil carrier of the driver.
  • the edge of the voice coil bobbin has an area with a reduced wall thickness and the voice coil is connected to the voice coil bobbin in this area, large forces can be transmitted thanks to the more solid design of the voice coil without winding devices that are designed for the winding of voice coils on thin-walled voice coil bobbins , must be modified. If the transition from the area of reduced wall thickness to the remaining edge of the voice coil bobbin is designed as a step, there must be no fear of the voice coil becoming detached from the voice coil bobbin even with large transmission forces because of the additional toothing of the voice coil on the voice coil bobbin. Already at this point it should be pointed out that a voice coil former designed according to claims 2, 3, 4 and 6 can be used independently.
  • FIG. 4 shows a further illustration according to FIG. 3,
  • FIG. 1 shows a sound panel 1 1, 'i CHT and two with the Kernsch 11' from a formed of hard foam core layer 1 1 associated cover layers 1 1 is "FEMER Figure 1 e i NEN electromagnetic Driver 12, which is m milled in the sound panel 11.
  • the driver 13 is essentially formed by a topfformig formed short-circuit arrangement 14, a permanent magnet 15 and an m th i i i ner Schw ngspule voice coil bobbin 16 provided 17th
  • the Daue ⁇ nagnet i st in d i e topff ⁇ rmige formed short-circuit arrangement inserted and connected Since the Durclimesser of the permanent magnet 15 is smaller i st than the inner diameter of the yoke assembly 14 topfformig formed is zw i exploiting that parts (14, 15), a mutual radial distance, which in connection is beze with this application as an air gap 18 i chnet
  • the Schwmgspulenough 17, st which likewise formed topfformig i i 18 e st to i se nem with the voice coil 16 provided edge 17 'in the air gap nguide i.
  • the bottom 17 "of the voice coil bobbin 17 is below 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 Durcli knife compared to the voice coil bobbin 17.
  • This reduction in diameter brings about an improved impression of bending waves in the sound panel 11 because, on the one hand, the force impression concentrates on a small area and, on the other hand, the radial distance A, which is essential for the generation of bending waves, between the area at which the force is applied, and the area in which the part of the driver 12 which does not vibrate under operating conditions is connected to the sound panel 11 is enlarged.
  • the bottom of the yoke arrangement facing away from the Daue ⁇ nagneten 15 is provided with an anchor plate 21 and connected via this to the sound panel 11.
  • the edge 14 'of the inference arrangement 14 is provided with a ring 22 which forms the ring Edge 14 'extended in the direction of the plate 19.
  • a central membrane 23 which extends in the air gap 18 between the ring 22 and the edge 17 'of the voice coil bobbin 17.
  • the central membrane 23 and / or the bottom 17 "of the voice coil support 17 openings 1 by means of which spacers (not shown) can be pushed in when the driver 12 shown in FIG. 1 is mounted also be carried out by means of a pin (not shown) which is guided centrally through the permanent magnet 15 and the yoke arrangement 17 and which, depending on the configuration, can also only end in the core layer 11.
  • FIG. 2 differs from the embodiment shown in FIG. 1 in that the ring 22 is replaced by a corresponding extension of the edge 14 'of the yoke arrangement 14 and in that the central membranes 23 are designed as flat disks.
  • the central membrane 23 is connected to the end faces 24 of the edge 14 'and the bottom 17 "of the voice coil bobbin 17, which results in further manufacturing advantages.
  • the centering membrane 23 and / or the bottom 17 ′′ of the voice coil bobbin 17 can be provided with corresponding openings (not shown) in order to produce the centricity of the voice coil 16 with respect to the down magnet 15.
  • FIG. 3 shows a voice coil support 17 for a drive for a sound panel 11 according to FIG. 1 or 2.
  • the edge 17 'of the voice coil bobbin 17 has an area 25 with reduced wall thickness and that the voice coil 16 is arranged in this area 25.
  • the relatively thick-walled design of the voice coil bobbin 17 ensures that the forces required for driving the sound panel 11 are transmitted to the sound panel 11 largely free of deformation losses.
  • the thin-walled area 25 ensures that despite the relatively thick-walled voice coil former 18 i.ü. the air gap 18 (FIG. 1) can be made very narrow and at the same time very low-loss.
  • the step 26 between the thin-walled area 25 and the rest of the voice coil former acts as an additional anchorage of the voice coil 16 on the voice coil former 17.
  • a central membrane 23 which is curved and is connected to the voice coil former 17.
  • the voice coil bobbin 17 is formed as shown in FIG. 4 in two parts and bestel l t i v of a thick-walled pot relat 27 and a thin-walled tube 27 '.
  • the pipe ' which is provided with the voice coil 16 27, is connected to the pot 27 D i ese bipartite the voice coil bobbin 17 has the Vorte i l that d can be prepared i e Int i eit of voice coil 16 and tube 27 to devices which are also used in the manufacture of such units for cone speakers.
  • FIG . 4 Sw i ngspulen 1985 by means of a flat Zentrie ⁇ nembrane 23 m i t the end faces 24 of the edge 14 'of the yoke assembly 14 is connected.

Landscapes

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

Abstract

L'invention concerne des vibreurs pour haut-parleurs à panneaux. Dans la technique antérieure, les haut-parleurs à panneaux fonctionnant selon le principe des ondes de flexion sont connus. Ces haut-parleurs sont en général constitués d'un panneau acoustique (11) et d'au moins un vibreur (12). Ce dernier (12) est placé en général sur un cadre auxiliaire à distance du panneau acoustique (11). Cette conception permet d'utiliser des vibreurs classiques (12) qui peuvent être employés même dans le cas des haut-parleurs à cône. Cependant, des problèmes apparaissent si les vibreurs (12) doivent être intégrés eux-mêmes au niveau ou à l'intérieur du panneau acoustique. Avec cette conception, il est alors nécessaire, entre autres, de monter les différents composants individuels du vibreur (12) directement sur le panneau acoustique (12). L'invention vise par conséquent à créer un vibreur pour haut-parleurs à panneaux pouvant être raccordé sans grande difficulté au panneau acoustique (11), en tant que composant préfabriqué. A cet effet, le support de bobine mobile (17) est raccordé dans l'entrefer (18) à l'aimant permanent (15) et/ou à l'unité de reflux (14) au moyen d'une membrane élastique (23).
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 true EP1077014A1 (fr) 2001-02-21
EP1077014B1 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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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
US20030144847A1 (en) * 2002-01-31 2003-07-31 Roy Kenneth P. Architectural sound enhancement with radiator response matching EQ
US20030142833A1 (en) * 2002-01-31 2003-07-31 Roy Kenneth P. Architectural sound enhancement with test tone diagnostics
US20030142814A1 (en) * 2002-01-31 2003-07-31 Roy Kenneth P. Architectural sound enhancement with DTMF control
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
EP1757161B1 (fr) * 2004-05-14 2016-11-30 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
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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
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Also Published As

Publication number Publication date
US6347149B1 (en) 2002-02-12
EP1077014B1 (fr) 2007-08-08
WO1999060820A1 (fr) 1999-11-25
DE59914445D1 (de) 2007-09-20
DE19821860A1 (de) 1999-11-18

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