EP0924959A2 - Arrangement de reproduction sonore - Google Patents

Arrangement de reproduction sonore Download PDF

Info

Publication number
EP0924959A2
EP0924959A2 EP98123819A EP98123819A EP0924959A2 EP 0924959 A2 EP0924959 A2 EP 0924959A2 EP 98123819 A EP98123819 A EP 98123819A EP 98123819 A EP98123819 A EP 98123819A EP 0924959 A2 EP0924959 A2 EP 0924959A2
Authority
EP
European Patent Office
Prior art keywords
core layer
recess
sound reproduction
voice coil
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
EP98123819A
Other languages
German (de)
English (en)
Other versions
EP0924959A3 (fr
EP0924959B1 (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
Nokia Technology GmbH
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 Nokia Technology GmbH, Harman Audio Electronic Systems GmbH filed Critical Nokia Technology GmbH
Publication of EP0924959A2 publication Critical patent/EP0924959A2/fr
Publication of EP0924959A3 publication Critical patent/EP0924959A3/fr
Application granted granted Critical
Publication of EP0924959B1 publication Critical patent/EP0924959B1/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; 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2440/00—Bending wave transducers covered by H04R, not provided for in its groups
    • H04R2440/01—Acoustic transducers using travelling bending waves to generate or detect sound
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H04R9/063—Loudspeakers using a plurality of acoustic drivers

Definitions

  • the invention is concerned with the arrangement of drive systems Sound reproduction arrangements that work on the principle of bending waves.
  • the panel is built on the sandwich principle, by two each other opposite surfaces of a very light core layer each with a thin cover layer are connected for example by gluing. So that Panel has good sound reproduction properties, the material for the Top layer have a particularly high expansion shaft speed.
  • Suitable Cover layer materials are, for example, thin metal foils or fiber-reinforced plastic films.
  • the core layer There are also special requirements for the core layer. That's the way it is necessary that the materials that can be used initially have a low mass density and have low damping.
  • the materials for the Core layer as high a shear modulus perpendicular to the surfaces have, which are provided with the cover layers. After all, it is in the sense A main requirement is that the core layers can be used Materials in the direction in which they are later made from this material formed core layer has its greatest extent, a very small Possess modulus of elasticity. This in relation to the last two requirements At first glance, contradictory prerequisites are most likely to be caused by a core layer that has a hole structure with between the two for the Coating with the surfaces provided for the top layers Breakthroughs with preferably a small cross section.
  • Core layer materials can be used because they are isotropic Material properties still suitable shear and elasticity modules exhibit. It should not go unmentioned in this context that the Use of rigid foams as the material for the core layer Cover layers have the task of the required anisotropic behavior of the To manufacture panels.
  • the invention is therefore based on the object of a sound reproduction arrangement specify which overcomes the disadvantages of the prior art.
  • the basic idea of the invention is to close the panel with a recess provided and to arrange the drive system in this recess. Will the Sound reproduction arrangement formed in this way, the core layer even used as a counter bearing for parts of the drive system.
  • This has besides the advantage of saving weight and depth also the advantage that due to the complete integration of drive systems within the panel both with the surfaces provided with cover layers can be designed uniformly.
  • panels in which the drive systems are completely in the Panel are integrated or from the cover layer or layers opposite the Environment are separated, even without problems in dirt or moisture Rooms.
  • it causes through the recess caused weakening of the panel also for a particularly good impression of bending waves in the panel, so that to produce bending wave required power reduced or one for the same power Low-frequency reproduction causes the panel to vibrate can be.
  • a particularly good transmission performance in the low and mid range is achieved when the drive system according to claim 2 of at least one Permanent magnet, a voice coil support and a voice coil is formed.
  • the core layer has a honeycomb structure in which each honeycomb of a plurality laterally connected and located between the two Cover layers extending walls is formed.
  • the core layer has a honeycomb structure in which each honeycomb of a plurality laterally connected and located between the two Cover layers extending walls is formed.
  • the recess in the core layer exposed walls of one or a plurality of honeycombs as Use voice coil former.
  • the use of the core layer as a voice coil former is not is only limited to the honeycomb structure. Rather, the walls are also of circular or polygonal structures forming the core layer and the Walls, which are formed by the formation of a recess in a Core layer made of rigid foam can be used in the same way.
  • the invention is not limited to the use of limited electromagnetic drive systems. Rather, too Piezoelectric drive systems can be used when higher-frequency sound signals should be transferred. To a piezoelectric drive system too realize, it is sufficient if the bottom of the recess is only with a piezoelectric disk is provided.
  • the drive system is made using a disk made of piezoelectric material realized, the side of the disc should be used to absorb opposing forces Piezoelectric material facing away from the floor according to claim 7 can be provided with a seismic mass.
  • the bottom of the recess be equipped with a pressure plate.
  • At least the honeycomb which axially and radially directly to the recess border, be foamed with a plastic material.
  • FIG. 1 a section of a panel 10 is shown in side section.
  • This Panel 10 is made up of a core layer 11, an upper cover layer 12.1 and a lower cover layer 12.2 is formed.
  • the two cover layers are 12 connected to opposite sides of the core layer 11.
  • the core layer 11 has a honeycomb structure, each of which Honeycomb 13 has a hexagonal cross section.
  • the respective honeycomb 13 Forming and laterally interconnected walls 14 between the two cover layers 12. Only for the sake of completeness noted that all of the embodiments shown in this application also apply to core layers 11, which are formed from a rigid foam are.
  • a recess 15 is milled.
  • This drive system 16 is one so-called yoke arrangement 17.1-17.4, a permanent magnet 18 and a voice coil carrier 20 provided with a voice coil 19 is formed.
  • the parts of the yoke arrangement 17.1-17.3 form one Inference pot.
  • the permanent magnet 18 and the part 17.4 are in the from Parts 17.1-17-3 formed yoke pot used.
  • Furthermore, in unity from permanent magnet 18 and the parts of the yoke arrangement 17.1-17.4 Leave the air gap 21 in which the one provided with the voice coil 19 Voice coil support 20 is immersed.
  • There is also a holder 22 which with the part 17.2 of the yoke arrangement and the core layer 11 connected is.
  • the holder 22 - as shown in Figure 1 - with the lower cover layer 12.2 is covered, is not for the function of the sound reproduction arrangement 10 necessary. If the lower cover layer 12.2 is not in another illustrated embodiment omitted in the area of the holder 22, If it has good thermal conductivity, it can also be used as a cooling plate for the drive system 16 are used. For this purpose, the Cooling plate acting bracket 22 also provided with cooling fins (not shown) be.
  • FIG. 2 shows a structure of a that is greatly simplified compared to FIG Sound reproduction arrangement 10.
  • this is in the Recess 15 drive system 16 used only by one annular permanent magnet 18 and a voice coil 19 are formed.
  • the Permanent magnet 18 which, in contrast to the permanent magnet 18 according to FIG. 1 is magnetized radially to the center line shown, is directly with the core layer 11 connected.
  • the voice coil 19 is to save a voice coil bobbin (20) directly with those not milled away when the recess 21 was created Connected (outer) wall 14 of the honeycomb 13.3 and dips together with the Walls 14 of the honeycomb 13.3 in the recess 21.1 of the annular Permanent magnet 18 a.
  • the lower cover layer can furthermore 12.2 opposite the bottom 23 of the recess 15 by means of an intermediate piece 11 'be supported, this intermediate piece 11' also from the core layer 11 can be formed.
  • the closest to the voice coil former 20 in the radial direction and regions of the core layer 11 connected to the permanent magnet 18 have one Diameter D1, which is twice in this embodiment Diameter D2 of the voice coil former 20 or the voice coil 19 corresponds.
  • a sound reproduction arrangement 10 is shown, in which in the Recess 15 a piezoelectrical drive system 16 'is arranged.
  • the drive system 16 ' is made of a disk 24 made of piezoelectric Material, a pressure plate 25 and a seismic mass 26 are formed.
  • the pressure plate 25 is connected directly to the bottom 23 of the recess 15.
  • On the side of the pressure plate 25 facing away from the upper cover layer 12.1 connects the disk 24 made of piezoelectric material.
  • the seismic mass 26 is connected to the side of the disk 24 facing away from the pressure plate 25.
  • the disc 24 as a so-called bending or thickness transducer is designed for the sound reproduction arrangements in question here of no importance, although the so-called flexural vibrators next to the lower weight and a larger amplitude also a lot in terms of impedance are better adapted to the relevant application here.
  • the embodiment differs from the other embodiments according to FIG. 3, only the honeycomb 13.2. foamed (indicated by the Dotting).
  • the disk 24 made of piezoelectric Material even without the interposition of a printing plate 25 with the core layer 11 can be connected if the core layer 11 and / or the one used Foaming has sufficient stability.
  • the disk can 24 can also be used without seismic mass 26.
  • FIG. 4 shows an embodiment that is similar to FIG. 1. Deviating this is only the drive system 16 inserted into the recess 15 designed. This is from two permanent magnets 18.1, 18.2, one Yoke plate 17.5 and a voice coil 19 formed.
  • the two Permanent magnets 18.1, 18.2, which like the permanent magnet 18 according to FIG. 1 in Direction to the centerline shown are magnetized at two each other opposite sides of the yoke plate 17.5 connected to it. Of the Permanent magnet 18.1 is attached to the bottom 23 of the recess 15.
  • FIG. 19 In contrast to the embodiments according to FIGS. 1 and 2, however, FIG the voice coil 19 not with the bottom 23 of the recess 15, but with the recess 15 in the radial direction delimiting side surfaces 28, which are formed by the dotted depiction, connected.
  • a separate voice coil former 20 may be arranged.
  • the latter also closes a that such a voice coil former 20 -like in Figure 2- directly from Honeycomb 13 forming walls 14.
  • the recess 15 can be also for mutual centering of voice coil 19 and magnet system 17; 18 are used when the recess 15 with corresponding steps 27 Is provided. Since in the exemplary embodiment according to FIG Voice coil former 20 formed by the wall 14 of the honeycomb 13.3 is that this honeycomb 13.3 left when milling the recess the correct mutual assignment of Voice coil carrier 20 or voice coil 19 for permanent magnet 18, if this, as shown in FIG. 2, has its end position at step 27 in the Has recessed 15. In the exemplary embodiment according to FIG.
  • the bottom 23 would have a step 27 '(shown in dashed lines), in which the permanent magnet 18.1 can intervene when the magnet system 17, 18 its end position in the Has recessed 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
EP98123819A 1997-12-20 1998-12-15 Arrangement de reproduction sonore Expired - Lifetime EP0924959B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19757097A DE19757097B4 (de) 1997-12-20 1997-12-20 Schallwiedergabeanordnung
DE19757097 1997-12-20

Publications (3)

Publication Number Publication Date
EP0924959A2 true EP0924959A2 (fr) 1999-06-23
EP0924959A3 EP0924959A3 (fr) 2005-04-20
EP0924959B1 EP0924959B1 (fr) 2009-11-25

Family

ID=7852891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98123819A Expired - Lifetime EP0924959B1 (fr) 1997-12-20 1998-12-15 Arrangement de reproduction sonore

Country Status (4)

Country Link
US (1) US6275598B1 (fr)
EP (1) EP0924959B1 (fr)
JP (1) JPH11252673A (fr)
DE (2) DE19757097B4 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10025460A1 (de) * 2000-05-23 2001-12-06 Harman Audio Electronic Sys Hochtonlautsprecher
US6347149B1 (en) 1998-05-15 2002-02-12 Harman Audio Electronic Systems Gmbh Driver for a flat acoustic panel
DE10058102A1 (de) * 2000-11-23 2002-06-06 Harman Audio Electronic Sys Elektrodynamischer Biegemomententreiber
US6622817B1 (en) 1998-05-15 2003-09-23 Harman Audio Electronic Systems Gmbh Sound reproduction device working according to the bending wave principle
US6836552B1 (en) 1998-06-10 2004-12-28 Harman Audio Electronic Systems Gmbh Panel loudspeakers

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19821855A1 (de) 1998-05-15 1999-11-18 Nokia Deutschland Gmbh Plattenlautsprecher
DE19840375C2 (de) 1998-09-04 2003-08-28 Harman Audio Electronic Sys Schallwand
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
DE10058104C2 (de) 2000-11-23 2003-10-30 Harman Audio Electronic Sys Elektromagnetischer Treiber für einen Plattenlautsprecher
EP1410680B1 (fr) * 2001-07-13 2010-12-15 Harman Becker Automotive Systems GmbH Haut-parleur a plaque
US7180489B2 (en) * 2002-02-06 2007-02-20 Andersen Corporation Automated multi-task window assembly
US7109959B2 (en) 2002-02-06 2006-09-19 Andersen Corporation Multi-task window
GB0221503D0 (en) * 2002-09-17 2002-10-23 1 Ltd Loudspeaker
DE102007035189A1 (de) * 2007-07-25 2009-02-05 Siemens Ag Vorrichtung zum Einkoppeln mechanischer Schwingungen in ein flächiges, biegesteifes Schallabgabeelement und Flächenlautsprecher
DE102008027385B4 (de) * 2008-06-09 2019-04-25 Fischer Profil Gmbh Sandwichelement für die Erstellung von Wänden und Dächern
NL1038214C2 (nl) * 2010-09-01 2012-03-05 Verburg Audio B V Meubel met geintegreerde luidspreker en werkwijzen voor het integreren van een luidspreker in een m eubel.
US9154862B2 (en) * 2013-06-27 2015-10-06 The Boeing Company Flat panel loudspeaker system
DE102021124624A1 (de) 2021-09-23 2023-03-23 LiMES - Immersive Solutions GmbH Schallwand

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4322583A (en) * 1978-11-20 1982-03-30 Sony Corporation Voice coil bobbin connection to loudspeaker diaphragm of honeycomb core sandwiched by sheets
JPS59210791A (ja) * 1984-04-17 1984-11-29 Matsushita Electric Ind Co Ltd スピ−カ用振動板
JPS60185498A (ja) * 1984-12-24 1985-09-20 Sony Corp スピ−カ
WO1997009862A1 (fr) * 1995-09-02 1997-03-13 New Transducers Limited Microphones en forme de panneau
WO1997009859A1 (fr) * 1995-09-02 1997-03-13 New Transducers Limited Transducteurs inertiels de vibrations
WO1997009861A1 (fr) * 1995-09-02 1997-03-13 New Transducers Limited Transducteur inertiel de vibrations

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2112516B1 (de) * 1971-03-16 1972-10-19 Kurtze Guenther Dipl Phys Prof Richtlautsprecher
DE3024729C2 (de) * 1979-06-30 1982-11-18 Pioneer Electronic Corp., Tokyo Schwingspulenkörper für eine planare Membran
JPS57113697A (en) * 1981-01-05 1982-07-15 Murata Mfg Co Ltd Piezoelectric type speaker
US4969197A (en) * 1988-06-10 1990-11-06 Murata Manufacturing Piezoelectric speaker
US5031222A (en) * 1988-07-22 1991-07-09 Murata Manufacturing Co., Ltd. Piezoelectric speaker
US5007707A (en) * 1989-10-30 1991-04-16 Bertagni Jose J Integrated sound and video screen
US5445861A (en) * 1992-09-04 1995-08-29 The Boeing Company Lightweight honeycomb panel structure
US5702230A (en) * 1996-01-29 1997-12-30 General Electric Company Actively controlled acoustic treatment panel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4322583A (en) * 1978-11-20 1982-03-30 Sony Corporation Voice coil bobbin connection to loudspeaker diaphragm of honeycomb core sandwiched by sheets
JPS59210791A (ja) * 1984-04-17 1984-11-29 Matsushita Electric Ind Co Ltd スピ−カ用振動板
JPS60185498A (ja) * 1984-12-24 1985-09-20 Sony Corp スピ−カ
WO1997009862A1 (fr) * 1995-09-02 1997-03-13 New Transducers Limited Microphones en forme de panneau
WO1997009859A1 (fr) * 1995-09-02 1997-03-13 New Transducers Limited Transducteurs inertiels de vibrations
WO1997009861A1 (fr) * 1995-09-02 1997-03-13 New Transducers Limited Transducteur inertiel de vibrations

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN Bd. 009, Nr. 075 (E-306), 4. April 1985 (1985-04-04) & JP 59 210791 A (MATSUSHITA DENKI SANGYO KK), 29. November 1984 (1984-11-29) *
PATENT ABSTRACTS OF JAPAN Bd. 010, Nr. 027 (E-378), 4. Februar 1986 (1986-02-04) & JP 60 185498 A (SONY KK), 20. September 1985 (1985-09-20) *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6347149B1 (en) 1998-05-15 2002-02-12 Harman Audio Electronic Systems Gmbh Driver for a flat acoustic panel
US6622817B1 (en) 1998-05-15 2003-09-23 Harman Audio Electronic Systems Gmbh Sound reproduction device working according to the bending wave principle
US6836552B1 (en) 1998-06-10 2004-12-28 Harman Audio Electronic Systems Gmbh Panel loudspeakers
DE10025460A1 (de) * 2000-05-23 2001-12-06 Harman Audio Electronic Sys Hochtonlautsprecher
DE10025460B4 (de) * 2000-05-23 2004-03-18 Harman Audio Electronic Systems Gmbh Hochtonlautsprecher
US6888946B2 (en) 2000-05-23 2005-05-03 Harman Audio Electronic Systems Gmbh High frequency loudspeaker
DE10058102A1 (de) * 2000-11-23 2002-06-06 Harman Audio Electronic Sys Elektrodynamischer Biegemomententreiber
DE10058102C2 (de) * 2000-11-23 2003-07-03 Harman Audio Electronic Sys Elektrodynamischer Biegemomententreiber

Also Published As

Publication number Publication date
EP0924959A3 (fr) 2005-04-20
DE19757097B4 (de) 2004-04-15
DE59814415D1 (de) 2010-01-07
DE19757097A1 (de) 1999-06-24
EP0924959B1 (fr) 2009-11-25
JPH11252673A (ja) 1999-09-17
US6275598B1 (en) 2001-08-14

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