WO2002043434A3 - Electrodynamic bending moment driver - Google Patents

Electrodynamic bending moment driver Download PDF

Info

Publication number
WO2002043434A3
WO2002043434A3 PCT/EP2001/011183 EP0111183W WO0243434A3 WO 2002043434 A3 WO2002043434 A3 WO 2002043434A3 EP 0111183 W EP0111183 W EP 0111183W WO 0243434 A3 WO0243434 A3 WO 0243434A3
Authority
WO
WIPO (PCT)
Prior art keywords
plate
resonator plate
bending moment
permanent magnet
driver
Prior art date
Application number
PCT/EP2001/011183
Other languages
German (de)
French (fr)
Other versions
WO2002043434A2 (en
Inventor
Wolfgang Bachmann
Gerhard Krump
Hans-Juergen Regl
Andreas Ziganki
Original Assignee
Harman Becker Automotive Sys
Wolfgang Bachmann
Gerhard Krump
Hans-Juergen Regl
Andreas Ziganki
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 Sys, Wolfgang Bachmann, Gerhard Krump, Hans-Juergen Regl, Andreas Ziganki filed Critical Harman Becker Automotive Sys
Priority to DE50115276T priority Critical patent/DE50115276D1/en
Priority to EP01983506A priority patent/EP1336321B1/en
Publication of WO2002043434A2 publication Critical patent/WO2002043434A2/en
Publication of WO2002043434A3 publication Critical patent/WO2002043434A3/en

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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers
    • 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)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

A bending moment driver, suitable for the boundary operation of planar diaphragm loudspeakers, comprises an oscillatory coil wound along the boundary edge surface of the resonator plate and a permanent magnet system arranged at a small separation from the boundary edge surface of the resonator plate. In an alternative embodiment the driver has a pole core with a fixed coil wound around the above and a permanent magnet let into the plate and fixed to the resonator plate for moment transmission, whereby the pole core is arranged around the edge of the resonator plate in a jaw-like manner. An opposing force pair parallel to the normal of the plate is thus generated, exerting a bending moment on the resonator plate by means of a lever arm corresponding to the length of the permanent magnet.
PCT/EP2001/011183 2000-11-23 2001-09-26 Electrodynamic bending moment driver WO2002043434A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50115276T DE50115276D1 (en) 2000-11-23 2001-09-26 ELECTRODYNAMIC BENDING TOMB
EP01983506A EP1336321B1 (en) 2000-11-23 2001-09-26 Electrodynamic bending moment driver

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10058102.1 2000-11-23
DE2000158102 DE10058102C2 (en) 2000-11-23 2000-11-23 Electrodynamic bending moment driver

Publications (2)

Publication Number Publication Date
WO2002043434A2 WO2002043434A2 (en) 2002-05-30
WO2002043434A3 true WO2002043434A3 (en) 2003-03-06

Family

ID=7664345

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/011183 WO2002043434A2 (en) 2000-11-23 2001-09-26 Electrodynamic bending moment driver

Country Status (3)

Country Link
EP (1) EP1336321B1 (en)
DE (2) DE10058102C2 (en)
WO (1) WO2002043434A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009040982A1 (en) * 2009-09-09 2011-03-10 CICADA Technologies GbR (Vertretungsberechtigter Gesellschafter: Andreas Müller, 10825 Berlin) Acoustic transducer and method for generating and / or receiving sound waves, movable member for an acoustic transducer and arrangement for moving a movable member of an acoustic transducer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999052324A1 (en) * 1998-04-02 1999-10-14 New Transducers Limited Acoustic device relying on bending wave action
DE19825866A1 (en) * 1998-06-10 1999-12-16 Nokia Deutschland Gmbh Record speakers
WO2000013464A1 (en) * 1998-08-28 2000-03-09 New Transducers Limited Loudspeakers comprising a resonant panel-form member
WO2002043435A2 (en) * 2000-11-23 2002-05-30 Harman/Becker Automotive Systems Gmbh Electromagnetic driver for a planar diaphragm loudspeaker

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3247925A (en) * 1962-03-08 1966-04-26 Lord Corp Loudspeaker
DE1998134U (en) * 1968-03-22 1968-12-12 Sel Ag SPEAKER SYSTEM
DE1939864A1 (en) * 1969-02-13 1970-10-08 Gomma Antivibranti Applic Damping device for air springs
DE3036149C2 (en) * 1980-09-08 1983-04-07 Werner Falkenberg Electroacoustic converter with vibration generators that oscillate against each other
FR2696611A1 (en) * 1992-09-28 1994-04-08 Stamp Sa Electro-acoustic transducer with diffusing volume.
EP0729628A4 (en) * 1993-11-18 1999-06-16 Sound Advance Syst Inc Improved planar diaphragm loudspeaker
UA51671C2 (en) * 1995-09-02 2002-12-16 Нью Транзд'Юсез Лімітед Acoustic device
DE19757097B4 (en) * 1997-12-20 2004-04-15 Harman Audio Electronic Systems Gmbh Sound reproduction device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999052324A1 (en) * 1998-04-02 1999-10-14 New Transducers Limited Acoustic device relying on bending wave action
DE19825866A1 (en) * 1998-06-10 1999-12-16 Nokia Deutschland Gmbh Record speakers
WO2000013464A1 (en) * 1998-08-28 2000-03-09 New Transducers Limited Loudspeakers comprising a resonant panel-form member
WO2002043435A2 (en) * 2000-11-23 2002-05-30 Harman/Becker Automotive Systems Gmbh Electromagnetic driver for a planar diaphragm loudspeaker

Also Published As

Publication number Publication date
EP1336321A2 (en) 2003-08-20
WO2002043434A2 (en) 2002-05-30
DE10058102A1 (en) 2002-06-06
EP1336321B1 (en) 2009-12-23
DE10058102C2 (en) 2003-07-03
DE50115276D1 (en) 2010-02-04

Similar Documents

Publication Publication Date Title
EP1257147A3 (en) Speaker and mobile terminal device
EP1178703A3 (en) Speaker and method of assembling the speaker
US10596595B2 (en) Vibration motor
EP1659824A3 (en) Voice coil device and speaker device using the voice coil device
WO2002018979A3 (en) Magnetically actuated micro-electro-mechanical apparatus and method of manufacture
CA2304184A1 (en) Electromagnetic actuator
EP1049353A3 (en) Bass reproduction speaker apparatus
EP1309073A3 (en) Vibrating device for axially vibrating a moveable member
CN110166907B (en) Sound producing device
CN103312886B (en) The method of mobile terminal and dancing thereof
WO2004073139A3 (en) Torque motor
WO2000035242A3 (en) Bending wave panel-form loudspeaker
CN201682610U (en) Audio frequency electromagnetic vibration energy converter
EP1187510A3 (en) Multifunction acoustic device
WO2002043434A3 (en) Electrodynamic bending moment driver
WO2023222002A1 (en) Bone conduction vibration sound-production device, bone conduction glasses and wearable apparatus
JPS6167400A (en) Electromechanical vibration transducer
JP2001029888A (en) Electromagnetic device and its drive circuit
CN116193337A (en) Bone conduction sound generating device and bone conduction earphone
EP0924961B1 (en) Electroacoustic transducer
RU2003113301A (en) DEVICE FOR MEASURING MICRO-MOVEMENTS AND METHOD OF TRANSFORMING THE PROCESS OF MOVING INTO ELECTRIC SIGNAL
CN209345399U (en) A kind of receiver
CN210016617U (en) Miniature sounding device
EP1448018A3 (en) Speaker device with dampers
CN218041159U (en) Telephone receiver motor and double-diaphragm telephone receiver

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2001983506

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2001983506

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP