EP1079664A3 - Electrodynamic driver - Google Patents

Electrodynamic driver Download PDF

Info

Publication number
EP1079664A3
EP1079664A3 EP00118512A EP00118512A EP1079664A3 EP 1079664 A3 EP1079664 A3 EP 1079664A3 EP 00118512 A EP00118512 A EP 00118512A EP 00118512 A EP00118512 A EP 00118512A EP 1079664 A3 EP1079664 A3 EP 1079664A3
Authority
EP
European Patent Office
Prior art keywords
diaphragm
cavity
magnet system
coil
driver
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
EP00118512A
Other languages
German (de)
French (fr)
Other versions
EP1079664B1 (en
EP1079664A2 (en
Inventor
Wolfgang Dr. Bachmann
Gerhard Dr. Krump
Hans-Jürgen Regl
Andreas Ziganki
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 EP1079664A2 publication Critical patent/EP1079664A2/en
Publication of EP1079664A3 publication Critical patent/EP1079664A3/en
Application granted granted Critical
Publication of EP1079664B1 publication Critical patent/EP1079664B1/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
    • H04R9/066—Loudspeakers using the principle of inertia
    • 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

Landscapes

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

Abstract

The driver has a moving coil (8) on a tubular coil holder (8a), with a magnet system (4,5,6) arranged concentric to the coil. An adaptor (9) is provided for attaching the coil holder to the diaphragm (12). An elastic element (2,7) is arranged between the diaphragm and the magnet system. A cavity (10,11,15,17) is formed between the diaphragm and the magnet system. An element (7) made of air permeable material is provided for equalising the pressure of the cavity. A pressure equalising channel (24,16) may be provided from the cavity to the outside air.
EP00118512A 1999-08-27 2000-08-25 Electrodynamic driver Expired - Lifetime EP1079664B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19940930 1999-08-27
DE19940930A DE19940930A1 (en) 1999-08-27 1999-08-27 Electrodynamic driver

Publications (3)

Publication Number Publication Date
EP1079664A2 EP1079664A2 (en) 2001-02-28
EP1079664A3 true EP1079664A3 (en) 2007-03-07
EP1079664B1 EP1079664B1 (en) 2011-10-19

Family

ID=7919954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00118512A Expired - Lifetime EP1079664B1 (en) 1999-08-27 2000-08-25 Electrodynamic driver

Country Status (3)

Country Link
EP (1) EP1079664B1 (en)
AT (1) ATE530030T1 (en)
DE (1) DE19940930A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104715745A (en) * 2013-12-11 2015-06-17 雅马哈株式会社 Installation structure for acoustic transducer

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003013186A1 (en) 2001-07-13 2003-02-13 Harman Becker Automotive Systems Gmbh Planar loudspeaker
WO2012014084A2 (en) * 2010-06-07 2012-02-02 Robert Katz Heat dissipating acoustic transducer with mounting means
WO2015047410A1 (en) * 2013-09-30 2015-04-02 Pearl Capital Developments Llc Waterproof speaker module
US9226076B2 (en) 2014-04-30 2015-12-29 Apple Inc. Evacuation of liquid from acoustic space
US10209123B2 (en) 2016-08-24 2019-02-19 Apple Inc. Liquid detection for an acoustic module
CN109348375A (en) * 2018-11-29 2019-02-15 深圳倍声声学技术有限公司 A kind of moving iron loud speaker and earphone

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2919884A1 (en) * 1978-05-17 1979-11-22 Bodysonic Kk ELECTROMECHANICAL VIBRATION TRANSDUCER FOR THE SOUND FREQUENCY BAND RANGE, WITH THIS CONNECTABLE CIRCUIT ARRANGEMENT, WITH THIS USABLE SOUND VIBRATION DEVICE, WITH THIS CONNECTABLE SOUND DEVICE AND WITH THIS VIBRATION DEVICE
US5426707A (en) * 1990-10-09 1995-06-20 Laine B. V. Electrodynamic loudspeaker with cooling arrangement
DE4421418A1 (en) * 1994-06-01 1995-12-07 Nokia Deutschland Gmbh Centering membrane
US5497428A (en) * 1994-11-01 1996-03-05 Rojas; Omar E. Self-cooled magnetic structure for loudspeakers
US5909015A (en) * 1998-03-26 1999-06-01 Yamamoto; Shuji Self-cooled loudspeaker

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU538247B2 (en) * 1979-11-09 1984-08-02 Matsushita Electric Industrial Co., Ltd. Speaker and speaker system
DE3923189A1 (en) * 1989-07-13 1991-01-24 Atl Elektro Akustik Vertriebs Bass loudspeaker leaving large area of diaphragm free to vibrate - separates flexible connected profile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2919884A1 (en) * 1978-05-17 1979-11-22 Bodysonic Kk ELECTROMECHANICAL VIBRATION TRANSDUCER FOR THE SOUND FREQUENCY BAND RANGE, WITH THIS CONNECTABLE CIRCUIT ARRANGEMENT, WITH THIS USABLE SOUND VIBRATION DEVICE, WITH THIS CONNECTABLE SOUND DEVICE AND WITH THIS VIBRATION DEVICE
US5426707A (en) * 1990-10-09 1995-06-20 Laine B. V. Electrodynamic loudspeaker with cooling arrangement
DE4421418A1 (en) * 1994-06-01 1995-12-07 Nokia Deutschland Gmbh Centering membrane
US5497428A (en) * 1994-11-01 1996-03-05 Rojas; Omar E. Self-cooled magnetic structure for loudspeakers
US5909015A (en) * 1998-03-26 1999-06-01 Yamamoto; Shuji Self-cooled loudspeaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104715745A (en) * 2013-12-11 2015-06-17 雅马哈株式会社 Installation structure for acoustic transducer
CN104715745B (en) * 2013-12-11 2018-06-22 雅马哈株式会社 For the mounting structure of acoustic transducer

Also Published As

Publication number Publication date
ATE530030T1 (en) 2011-11-15
DE19940930A1 (en) 2001-03-29
EP1079664B1 (en) 2011-10-19
EP1079664A2 (en) 2001-02-28

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