EP0804048A3 - Loudspeaker - Google Patents

Loudspeaker Download PDF

Info

Publication number
EP0804048A3
EP0804048A3 EP97105524A EP97105524A EP0804048A3 EP 0804048 A3 EP0804048 A3 EP 0804048A3 EP 97105524 A EP97105524 A EP 97105524A EP 97105524 A EP97105524 A EP 97105524A EP 0804048 A3 EP0804048 A3 EP 0804048A3
Authority
EP
European Patent Office
Prior art keywords
loudspeaker
permanent magnet
metal
paramagnetic
centre
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
EP97105524A
Other languages
German (de)
French (fr)
Other versions
EP0804048A2 (en
EP0804048B1 (en
Inventor
Stefan Geisenberger
Gerhard Krump
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 EP0804048A2 publication Critical patent/EP0804048A2/en
Publication of EP0804048A3 publication Critical patent/EP0804048A3/en
Application granted granted Critical
Publication of EP0804048B1 publication Critical patent/EP0804048B1/en
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; 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
    • 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
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/022—Aspects regarding the stray flux internal or external to the magnetic circuit, e.g. shielding, shape of magnetic circuit, flux compensation coils

Abstract

The loudspeaker (10) has at least one radially magnetised permanent magnet (12), supported by a mounting made of a paramagnetic or diamagnetic material, which may be provided in one piece with the loudspeaker cone which is made of a metal or metal alloy. The permanent magnet can be provided by a ring positioned between 2 identical loudspeaker membranes (13,13'), with a common oscillation coil body (15) at the centre of the permanent magnet.
EP97105524A 1996-04-26 1997-04-03 Loudspeaker Expired - Lifetime EP0804048B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19616794 1996-04-26
DE19616794A DE19616794B4 (en) 1996-04-26 1996-04-26 speaker

Publications (3)

Publication Number Publication Date
EP0804048A2 EP0804048A2 (en) 1997-10-29
EP0804048A3 true EP0804048A3 (en) 2004-07-14
EP0804048B1 EP0804048B1 (en) 2008-10-29

Family

ID=7792585

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97105524A Expired - Lifetime EP0804048B1 (en) 1996-04-26 1997-04-03 Loudspeaker

Country Status (4)

Country Link
US (1) US6359997B2 (en)
EP (1) EP0804048B1 (en)
AT (1) ATE413081T1 (en)
DE (2) DE19616794B4 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5802191A (en) * 1995-01-06 1998-09-01 Guenther; Godehard A. Loudspeakers, systems, and components thereof
GB2334849B (en) * 1998-02-27 2001-02-28 Simon James Norfolk The double diaphragm
US8588457B2 (en) 1999-08-13 2013-11-19 Dr. G Licensing, Llc Low cost motor design for rare-earth-magnet loudspeakers
AU2001270247A1 (en) * 2000-06-27 2002-01-08 Godehard A. Guenther Low profile speaker and system
GB2377849A (en) * 2001-07-21 2003-01-22 Kh Technology Corp Loudspeaker drive units with smooth transition to surround
JP3963173B2 (en) * 2004-01-06 2007-08-22 ソニー株式会社 Speaker
US7570774B2 (en) * 2004-05-25 2009-08-04 Estec Corporation Speaker having improved sound-radiating function to both directions
US7653208B2 (en) 2004-09-09 2010-01-26 Guenther Godehard A Loudspeakers and systems
US7706563B2 (en) * 2005-12-19 2010-04-27 Harman International Industries, Incorporated Concentric radial ring motor
US20070297639A1 (en) * 2006-06-21 2007-12-27 Noll Michael A Multiple magnet loudspeaker
US8189840B2 (en) * 2007-05-23 2012-05-29 Soundmatters International, Inc. Loudspeaker and electronic devices incorporating same
FR2956274B1 (en) * 2010-02-10 2017-06-09 Renault Sas ELECTRODYNAMIC TRANSDUCER STRUCTURE AND METHOD FOR MANUFACTURING THE SAME
FR2960738B1 (en) * 2010-05-28 2015-09-25 Focal Jmlab ACOUSTIC SPEAKER
DE102010045290B4 (en) * 2010-09-14 2016-04-28 Günther Zimmer Singler with electrodynamic actuator
US8836276B2 (en) * 2011-03-07 2014-09-16 Eldon Technology Limited Charging batteries for electronic devices by talking
CN102821342A (en) * 2011-06-10 2012-12-12 宁波升亚电子有限公司 Loudspeaker
ITPD20110191A1 (en) 2011-06-13 2012-12-14 Maurizio Servadio THIN ELECTROMECHANICAL / ELECTROACOUSTIC TRANSDUCER
FR3015671B1 (en) * 2013-12-23 2020-03-20 Safran Helicopter Engines ASSEMBLY FOR A TURBOMACHINE FOR MEASURING VIBRATIONS SUBJECT TO A ROTATING BLADE
CN105025421A (en) * 2014-04-17 2015-11-04 有限会社左尔佐 Loudspeaker
US9854365B2 (en) * 2016-04-15 2017-12-26 Harman International Industries, Inc. Loudspeaker motor and suspension system
CN108513238A (en) * 2018-05-22 2018-09-07 黄清山 A kind of bulging paper and the loudspeaker with the drum paper
CN108632728B (en) 2018-06-25 2020-08-11 歌尔股份有限公司 Sound production device and portable terminal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3679833A (en) * 1968-07-18 1972-07-25 Inoue K Loudspeaker system
DE2709972A1 (en) * 1977-03-08 1978-09-14 Wilhelm Dr Ing Lepper Double loudspeaker with one moving coil drive system - has two oppositely directed conical membranes linked by rod passing through hollow magnet pole
JPH01258589A (en) * 1988-04-08 1989-10-16 Shicoh Eng Co Ltd Motor driven electroacoustic transducer

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3665352A (en) * 1970-05-12 1972-05-23 Deutsche Edelstahlwerke Ag Permanent magnet system for a loudspeaker
BE794025A (en) * 1972-01-21 1973-05-02 Gen Electric MAGNET SET
US4327257A (en) * 1979-09-10 1982-04-27 Schwartz Leslie H Alignment device for electro-acoustical transducers
FR2477821A1 (en) * 1980-03-06 1981-09-11 3A Art Acoustique Appliquee Sa ELECTRODYNAMIC SPEAKER
US4319096A (en) * 1980-03-13 1982-03-09 Winey James M Line radiator ribbon loudspeaker
NL8301653A (en) * 1983-05-10 1984-12-03 Philips Nv ELECTRO-ACOUSTIC CONVERTER WITH AN AIR-PERMISSIBLE MEMBRANE.
DK156454C (en) * 1985-01-03 1990-01-15 Johan Peter Lyngdorf SPEAKER UNIT WITH MORE THAN A BASE / MIDDLE SPEAKER
DE3611120A1 (en) * 1986-04-03 1987-10-08 Hans Buerk Loudspeaker system for uniform all-round radiation of higher sound frequency components
JPH0338999A (en) * 1989-07-05 1991-02-20 Matsushita Electric Ind Co Ltd Loudspeaker
US5142260A (en) * 1991-03-08 1992-08-25 Harman International Industries, Incorporated Transducer motor assembly
WO1993003586A1 (en) 1991-08-05 1993-02-18 Aura Systems, Inc. Voice coil actuator
US5321762A (en) * 1991-08-05 1994-06-14 Aura Systems, Inc. Voice coil actuator
DE4215519C1 (en) * 1992-05-12 1993-09-23 Richt, Oskar Hubert, 82319 Starnberg, De Hi-fi loudspeaker with foil membrane - has coils attached to membrane corresponding to radial magnetic field lines of concentric magnetic rings of drive system
DE4234069A1 (en) 1992-10-09 1994-04-14 Nokia Deutschland Gmbh Cone speaker in lightweight design
KR950024611A (en) * 1994-01-05 1995-08-21 구쯔자와 겐따로우 Speaker with magnetic circuit
US5664024A (en) * 1994-04-25 1997-09-02 Matsushita Electric Industrial Co., Ltd. Loudspeaker
JP3161677B2 (en) * 1995-02-17 2001-04-25 アルパイン株式会社 Speaker
KR19980032013A (en) * 1995-12-15 1998-07-25 모리시타요오이찌 Vibration generator
US5786741A (en) * 1995-12-21 1998-07-28 Aura Systems, Inc. Polygon magnet structure for voice coil actuator
US5809157A (en) * 1996-04-09 1998-09-15 Victor Lavrov Electromagnetic linear drive
JPH11177198A (en) * 1997-12-12 1999-07-02 Mitsumi Electric Co Ltd Flexible wiring board
JPH11268598A (en) * 1998-03-20 1999-10-05 Inoac Corporation:Kk Mounting structure for molding

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3679833A (en) * 1968-07-18 1972-07-25 Inoue K Loudspeaker system
DE2709972A1 (en) * 1977-03-08 1978-09-14 Wilhelm Dr Ing Lepper Double loudspeaker with one moving coil drive system - has two oppositely directed conical membranes linked by rod passing through hollow magnet pole
JPH01258589A (en) * 1988-04-08 1989-10-16 Shicoh Eng Co Ltd Motor driven electroacoustic transducer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 016 (E - 872) 12 January 1990 (1990-01-12) *

Also Published As

Publication number Publication date
EP0804048A2 (en) 1997-10-29
DE19616794A1 (en) 1997-10-30
US6359997B2 (en) 2002-03-19
DE59712977D1 (en) 2008-12-11
US20010043715A1 (en) 2001-11-22
DE19616794B4 (en) 2005-09-29
ATE413081T1 (en) 2008-11-15
EP0804048B1 (en) 2008-10-29

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