DE3360028D1 - Electro-acoustic transducer having a diaphragm comprising a layer of polymethacrylimide foam - Google Patents

Electro-acoustic transducer having a diaphragm comprising a layer of polymethacrylimide foam

Info

Publication number
DE3360028D1
DE3360028D1 DE8383200138T DE3360028T DE3360028D1 DE 3360028 D1 DE3360028 D1 DE 3360028D1 DE 8383200138 T DE8383200138 T DE 8383200138T DE 3360028 T DE3360028 T DE 3360028T DE 3360028 D1 DE3360028 D1 DE 3360028D1
Authority
DE
Germany
Prior art keywords
diaphragm
electro
layer
acoustic transducer
polymethacrylimide foam
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
Application number
DE8383200138T
Other languages
English (en)
Inventor
Urbanus Paul Margueri Goossens
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of DE3360028D1 publication Critical patent/DE3360028D1/de
Expired legal-status Critical Current

Links

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
    • 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
    • H04R7/06—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; 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
    • H04R2307/029—Diaphragms comprising fibres

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Laminated Bodies (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
DE8383200138T 1982-02-22 1983-01-27 Electro-acoustic transducer having a diaphragm comprising a layer of polymethacrylimide foam Expired DE3360028D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8200690A NL8200690A (nl) 1982-02-22 1982-02-22 Luidsprekermembraan bevattende een laag van polymethacrylimideschuim.

Publications (1)

Publication Number Publication Date
DE3360028D1 true DE3360028D1 (en) 1985-01-31

Family

ID=19839298

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383200138T Expired DE3360028D1 (en) 1982-02-22 1983-01-27 Electro-acoustic transducer having a diaphragm comprising a layer of polymethacrylimide foam

Country Status (8)

Country Link
US (1) US4517416A (de)
EP (1) EP0087177B1 (de)
JP (1) JPS58153493A (de)
AT (1) AT376352B (de)
CA (1) CA1201798A (de)
DE (1) DE3360028D1 (de)
ES (1) ES8401704A1 (de)
NL (1) NL8200690A (de)

Families Citing this family (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8514189D0 (en) * 1985-06-05 1985-07-10 Reefgrade Ltd Electro-mechanical transducer diaphragm
JPH02260799A (ja) * 1989-03-30 1990-10-23 Pioneer Electron Corp スピーカおよびその製造方法
FR2656972B1 (fr) * 1990-01-11 1992-05-15 Mitsubishi Pencil Co Procede de preparation d'un diaphragme entierement carbone pour equipement acoustique.
GB2261136B (en) * 1990-06-08 1995-02-15 Simon Paul Carrington Loudspeaker with an oscillator having a coiled tubular chamber
FR2665321A1 (fr) * 1990-07-23 1992-01-31 Fontaine Pierre Procede de fabrication de membranes pour applications electro-mecaniques, notamment pour tranducteurs electro-mecaniques et produit en resultant.
DE4030245A1 (de) * 1990-09-25 1992-03-26 Nokia Unterhaltungselektronik Lautsprechermembran fuer konuslautsprecher
US5231672A (en) * 1991-07-10 1993-07-27 Tsao Ye Ming Plane-surfaced waved out-diffusion triangular beam-typed resonant board
ES2084444T3 (es) 1992-01-15 1996-05-01 Patrick Arthur Leach Metodo y aparato para hacer un ensamblado de cono y cerco de altavoz.
DE69332123T2 (de) * 1992-02-21 2003-03-20 Matsushita Electric Ind Co Ltd Lautsprechersystem
US5802194A (en) * 1993-10-01 1998-09-01 Sony Corporation Stereo loudspeaker system with tweeters mounted on rotatable enlongated arms
US5751827A (en) * 1995-03-13 1998-05-12 Primo Microphones, Inc. Piezoelectric speaker
US5701359A (en) * 1995-04-06 1997-12-23 Precision Power Flat-panel speaker
US6097829A (en) * 1995-04-06 2000-08-01 Precision Power, Inc. Fiber-honeycomb-fiber sandwich speaker diaphragm and method
GB2315185A (en) * 1996-07-09 1998-01-21 B & W Loudspeakers Diaphragm surrounds for loudspeaker drive units
GB2351868B (en) * 1998-06-22 2001-08-29 Slab Technology Ltd Loudspeakers
US7185735B2 (en) * 1998-11-30 2007-03-06 Joseph Yaacoub Sahyoun Audio speaker with wobble free voice coil movement
US7225895B2 (en) * 1998-11-30 2007-06-05 Joseph Yaacoub Sahyoun Audio speaker with wobble free voice coil movement
US20040188175A1 (en) * 1998-11-30 2004-09-30 Sahyoun Joseph Yaacoub Audio speaker with wobble free voice coil movement
US6675931B2 (en) 1998-11-30 2004-01-13 Joseph Yaacoub Sahyoun Low profile audio speaker
US6044925A (en) * 1998-11-30 2000-04-04 Sahyoun; Joseph Yaacoub Passive speaker
DE19925787C1 (de) * 1999-06-05 2000-12-21 Roehm Gmbh Verfahren zur Herstellung von Membranen für elektroakustische Wandler sowie Membranen
AU7388200A (en) * 1999-07-23 2001-02-13 Digital Sonics, Llc Flat panel speaker
DE19935596A1 (de) * 1999-08-02 2001-03-15 Moeller Plast Gmbh Akustisches Bauteil
GB2365655A (en) * 2000-08-02 2002-02-20 Fane Acoustics Ltd Loudspeaker with an additional flat diaphragm connected to cone diaphragm
US6574347B1 (en) * 2000-11-17 2003-06-03 Logitech Europe S.A. Flat-panel loudspeaker with compressed dampeners
JP2002374593A (ja) * 2001-06-18 2002-12-26 Pioneer Electronic Corp スピーカ振動板
DE10135414C1 (de) * 2001-07-25 2003-03-13 Roehm Gmbh Herstellung nicht-flacher Membranen für elektroakustische Wandler
FR2853803B1 (fr) * 2003-04-09 2005-06-03 Focal Jmlab Membrane pour haut-parleur d'enceinte acoustique haute fidelite, multicouches, multimateriaux
GB2403091B (en) * 2003-06-18 2006-08-09 B & W Loudspeakers Diaphragms for loudspeaker drive units
DE202004000509U1 (de) * 2004-01-14 2005-05-19 Schwarzenberg, Hans-Josef Lautsprecher-Membran
JP4482372B2 (ja) * 2004-05-13 2010-06-16 パイオニア株式会社 電気音響変換器用振動板の製造方法
EP1797741B1 (de) * 2004-09-30 2011-07-06 PSS Belgium NV Lautsprecher mit einer akustischen membran
JP5094404B2 (ja) * 2004-10-21 2012-12-12 シュアー インコーポレイテッド リボン型音響変換器構造
CN101374371B (zh) * 2007-08-21 2012-07-04 张百良 一种改进的平板型扬声器振动系统
US8320604B1 (en) * 2007-05-02 2012-11-27 Richard Vandersteen Composite loudspeaker cone
US20090169049A1 (en) * 2007-12-28 2009-07-02 Szu-Wei Sun Low Profile Audio Speaker
US8204269B2 (en) * 2008-08-08 2012-06-19 Sahyoun Joseph Y Low profile audio speaker with minimization of voice coil wobble, protection and cooling
WO2010058556A1 (ja) * 2008-11-19 2010-05-27 パナソニック株式会社 スピーカと、スピーカを備えた電子機器
DE102009055749B4 (de) * 2009-03-03 2013-11-28 Leichtbau-Zentrum Sachsen Gmbh Membran für elektromechanische Wandler und Verfahren zur Herstellung der Membran
DE102009040982A1 (de) * 2009-09-09 2011-03-10 CICADA Technologies GbR (Vertretungsberechtigter Gesellschafter: Andreas Müller, 10825 Berlin) Akustischer Wandler und Verfahren zum Erzeugen und/oder Empfangen von Schallwellen, bewegbares Element für einen akustischen Wandler sowie Anordnung zum Bewegen eines bewegbaren Elementes eines akustischen Wandlers
FR2974476A1 (fr) 2011-04-20 2012-10-26 Nexo Dispositif d'emission d'une onde acoustique
CN102821348B (zh) * 2011-06-10 2018-07-03 宁波升亚电子有限公司 一种基于注射模塑工艺的扬声器
CN102848622B (zh) * 2012-09-06 2015-10-21 江苏兆鋆新材料科技有限公司 一种具有pmi泡沫芯材的夹芯材料及其制备方法
US9113250B2 (en) * 2013-05-29 2015-08-18 Tang Band Industries Co., Ltd. Speaker with diaphragm arrangement
FR3014628B1 (fr) * 2013-12-05 2017-04-21 Devialet Haut-parleur electrodynamique compact a membrane convexe
CN204316743U (zh) * 2014-12-09 2015-05-06 瑞声精密电子沭阳有限公司 复合振膜及使用该复合振膜的扬声器
GB2534859B (en) * 2015-01-30 2020-06-10 B&W Group Ltd Diaphragm for a loudspeaker drive unit or a microphone
US9769570B2 (en) 2015-03-31 2017-09-19 Bose Corporation Acoustic diaphragm
WO2016160854A1 (en) * 2015-03-31 2016-10-06 Bose Corporation Acoustic diaphragm
US9743190B2 (en) 2015-03-31 2017-08-22 Bose Corporation Acoustic diaphragm
GB2538809B (en) 2015-05-29 2021-08-25 B & W Group Ltd Loudspeaker diaphragm
US10547949B2 (en) 2015-05-29 2020-01-28 EVA Automation, Inc. Loudspeaker diaphragm
RU2597656C1 (ru) * 2015-07-10 2016-09-20 Растошинский Иван Сергеевич Динамический громкоговоритель с плоской гофровой и ячеистой мембраной
JP5977473B1 (ja) * 2015-08-20 2016-08-24 Ｎｅｃトーキン株式会社 振動伝達構造、及び圧電スピーカ
WO2017029768A1 (ja) * 2015-08-20 2017-02-23 Ｎｅｃトーキン株式会社 振動伝達構造、及び圧電スピーカ
WO2017149984A1 (ja) * 2016-02-29 2017-09-08 パナソニックＩｐマネジメント株式会社 スピーカ
GB2549955A (en) 2016-05-03 2017-11-08 4A Mfg Gmbh Membrane plate structure for generating sound waves
US10028060B2 (en) * 2016-08-22 2018-07-17 4A Manufacturing Gmbh Temperature stable membrane plate structure for a loudspeaker
US10034093B2 (en) * 2016-08-22 2018-07-24 4A Manufacturing Gmbh Temperature stable membrane plate structure for a loudspeaker
KR20190087581A (ko) * 2016-11-29 2019-07-24 비 앤드 더블유 그룹 리미티드 라우드스피커 다이어프램
CN109756826A (zh) * 2018-12-29 2019-05-14 李胜国 一种强心夹层音盆装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1289117B (de) * 1957-12-24 1969-02-13 Siemens Ag Albis Verfahren zum Verkleben einer umfangszentrierten Membran aus loesbarem Kunststoff im Gehaeuse eines elektroakustischen Wandlers
NL283889A (de) * 1961-10-04
US3350513A (en) * 1964-06-22 1967-10-31 Alfred H Roberts Cone loudspeakers
US3664911A (en) * 1968-12-30 1972-05-23 Nippon Musical Instruments Mfg Diaphragm for sound instrument and method for producing same
DE2225710C3 (de) * 1971-05-28 1975-12-04 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Membran für elektroakustische Wandler und Verfahren zu ihrer Herstellung
GB1547977A (en) * 1976-11-26 1979-07-04 Advanced Composite Components Process for the manufacture of foam cored assemblies
JPS5511680A (en) * 1978-07-12 1980-01-26 Matsushita Electric Ind Co Ltd Diaphragm unit for speaker
US4410768A (en) * 1980-07-23 1983-10-18 Nippon Gakki Seizo Kabushiki Kaisha Electro-acoustic transducer
JPS5772496A (en) * 1980-10-22 1982-05-06 Pioneer Electronic Corp Plane speaker

Also Published As

Publication number Publication date
AT376352B (de) 1984-11-12
CA1201798A (en) 1986-03-11
NL8200690A (nl) 1983-09-16
US4517416A (en) 1985-05-14
ES519895A0 (es) 1983-12-01
ATA58083A (de) 1984-03-15
EP0087177B1 (de) 1984-12-19
JPS58153493A (ja) 1983-09-12
ES8401704A1 (es) 1983-12-01
EP0087177A1 (de) 1983-08-31

Similar Documents

Publication Publication Date Title
DE3360028D1 (en) Electro-acoustic transducer having a diaphragm comprising a layer of polymethacrylimide foam
DE3466918D1 (en) Integrated electroacoustic transducer
EP0140618A3 (en) Acoustic transducer
GB8314336D0 (en) Electroacoustic transducer
GB2168212B (en) Surface acoustic wave transducer
GB2164226B (en) Electroacoustic transducer
GB2122453B (en) Large-excursion electroacoustic transducer
GB8425064D0 (en) Acoustic transducer
US4473722B1 (en) Electroacoustic transducers
EP0147863A3 (en) Surface acoustic wave transducer
GB2146870B (en) Directional acoustic transducer
GB2263842B (en) Electro-acoustic transducers comprising a sealed shell
GB2144546B (en) Surface acoustic wave accelerometer
GB8411493D0 (en) Electro-acoustic transducer
DE3377888D1 (en) Electro-acoustic transducer with diaphragm
GB2144308B (en) Electro-acoustic transducer element
GB2143326B (en) Surface acoustic wave accelerometer
GB2144600B (en) Electro acoustic transducer
AU3064284A (en) Low frequency sound transducer
GB2096860B (en) Piezoelectric sound transducer
GB2123650B (en) Acoustic diaphragm
GB8425213D0 (en) Electro-acoustic transducer
GB2153627B (en) Piezoelectric electroacoustic transducer
SG40087G (en) Electro-acoustic transducer
DE3477335D1 (en) Electrostatic sound transducer

Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee