EP0876079A1 - Transducteur éléctro-acoustique - Google Patents

Transducteur éléctro-acoustique Download PDF

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Publication number
EP0876079A1
EP0876079A1 EP98890123A EP98890123A EP0876079A1 EP 0876079 A1 EP0876079 A1 EP 0876079A1 EP 98890123 A EP98890123 A EP 98890123A EP 98890123 A EP98890123 A EP 98890123A EP 0876079 A1 EP0876079 A1 EP 0876079A1
Authority
EP
European Patent Office
Prior art keywords
membrane
coil
area
electroacoustic transducer
annular
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
EP98890123A
Other languages
German (de)
English (en)
Other versions
EP0876079B1 (fr
Inventor
Gino Dipl.Ing. Pavlovic
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.)
AKG Acoustics GmbH
Original Assignee
AKG Acoustics 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 AKG Acoustics GmbH filed Critical AKG Acoustics GmbH
Publication of EP0876079A1 publication Critical patent/EP0876079A1/fr
Application granted granted Critical
Publication of EP0876079B1 publication Critical patent/EP0876079B1/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction

Definitions

  • Electroacoustic transducers based on the electrodynamic Working principle, have a membrane that with a coil is connected. The coil protrudes into the ring-shaped Slot between the poles of a magnet and the Converting acoustic or electrical energy vice versa, is done by the movement of the coil.
  • the invention aims to remedy this and a Specify solution without using a bobbin gets along, but still allowed the coil further away from to arrange the actual membrane level and so better in Position magnetic yoke.
  • this is done in that the membrane in the area of the coil an annular extension in one piece molded with it on which the coil in attached desired distance from the membrane, preferred is glued.
  • the assembly is preferably on the front side Front, in contrast to conventional, specially made Coil carriers that hold the coil on its outer surface carry.
  • the membrane has in the area of the coil an annular bead on which the coil is fitted, is preferably glued.
  • This invention is based on the knowledge that it Deep-drawing process is possible to deform the membrane in such a way that a coil support is made in one piece from the membrane material molded in the manufacture of the membrane can be. Because this formation in the same tool and in the same operation as the membrane shaping there are no tolerance or adjustment problems, there is no longer any need for your own coil support part and the attachment of the coil to the trained according to the invention The process is as unproblematic as in the past Assembly of the coil directly on the membrane without use a bobbin.
  • Another advantage is the lack of an additional one vibrating mass, as has always been the coil former has formed, which is particularly the case with the implementation high frequencies has a positive effect.
  • Fig. 1 is in a capsule from upper part 1 and lower part 2, a magnet 3 and a two-part yoke 4, 5 provided. It is also provided a membrane 6, usually with its circular Edge clamped between the capsule halves 1, 2 or in is glued to this area and into an edge area 7 and a central area 8 can be subdivided.
  • the central part 8 is actually the essential part of the membrane and along the circumference of this central area 8 a coil 9 is mounted, usually glued on.
  • the magnetic field between the mutually facing lateral surface of the yoke parts 4, 5 of the magnet 3 practically homogeneous if one except that the circumference of the outer yoke part is larger than the circumference of the inner yoke part, so that the magnetic field lines are radial and not parallel run to each other, but considering the small number relative differences in length is negligible.
  • the membrane 6 is now a To give shape, as shown in Fig. 5 or 6, in which the transition area between the bead region 7 and the dome region 8 axially downwards (towards the magnet system) is pulled, whereby a serving as a coil carrier in approximately annular extension 11 is formed.
  • This extension can, as shown in Fig. 5, from a cylindrical section may exist is thick-walled than the other membrane areas or but it can, as shown in Fig. 6, in axial section be groove-shaped.
  • a groove-shaped formation is obtained, for example, with 7, in which a blank of Membrane 6 by applying pressure and in most Cases also by thermal treatment in the deep-drawing process is drawn over a form 12.
  • the height 1 of the form extension determines the height of the bobbin 11.
  • the film 5 can be used a form that is later based on the Magnet system facing side of the film 6 arranged is, film material accordingly in a recess this shape is pressed. This can be particularly the case with well thermoformable film material can be used. It is in this case also possible instead of the excess gas pressure a die on the side of the film facing away from the mold to use.
  • a material for the film for example Polycarbonate, polyetherester urethane or PETP film, for example called Mylar.
  • extension 11th not along the entire circumference of the dome area 8 takes place, but that continuous bridges 13 between the Beading area 7 and the dome area 8 remain what especially in the formation of the extension Fig. 6 can be cheap.
  • the only slight gap Forming interruption of the extension 11 interferes with the application and sticking the plunger 9 not.
  • the invention is for those currently common in this field and applicable materials known to those skilled in the art, and of course those skilled in the art use such membrane materials 6 preferred, which has a distinctly favorable deep-drawing behavior have to do this without manufacturing problems the greatest possible height 1 of the annular extension 11 to achieve.
  • the invention is not based on the exemplary embodiment shown limited, but can be modified in various ways will. So the end face of the integrated Coil carrier on which the coil is attached, one have special geometry, for example a gradation, to make assembly easier. It can be the specialist with knowledge of the invention also the specified materials replace with others that are more familiar to him.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
EP98890123A 1997-04-30 1998-04-29 Transducteur éléctro-acoustique Expired - Lifetime EP0876079B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0075597A AT405997B (de) 1997-04-30 1997-04-30 Elektroakustischer wandler
AT755/97 1997-04-30
AT75597 1997-04-30

Publications (2)

Publication Number Publication Date
EP0876079A1 true EP0876079A1 (fr) 1998-11-04
EP0876079B1 EP0876079B1 (fr) 2001-12-19

Family

ID=3498940

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98890123A Expired - Lifetime EP0876079B1 (fr) 1997-04-30 1998-04-29 Transducteur éléctro-acoustique

Country Status (7)

Country Link
US (1) US6587570B1 (fr)
EP (1) EP0876079B1 (fr)
JP (1) JP3926473B2 (fr)
AT (2) AT405997B (fr)
DE (1) DE59802496D1 (fr)
DK (1) DK0876079T3 (fr)
ES (1) ES2170470T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001056330A2 (fr) * 2000-01-27 2001-08-02 Koninklijke Philips Electronics N.V. Transducteur electroacoustique comportant un diaphragme dote de saillies de montage de bobine et de parois de stabilisation intercalees
DE202010006188U1 (de) * 2010-04-28 2011-03-03 Elac Electroacustic Gmbh Lautsprecher mit Aktuator und Dichtmembran

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4159408B2 (ja) * 2003-05-26 2008-10-01 パイオニア株式会社 スピーカ
DE60303189T2 (de) 2003-09-11 2006-08-24 Akg Acoustics Gmbh Dynamischer elektroakustischer Wandler, insbesondere kleiner Lautsprecher
EP1694094A1 (fr) * 2005-02-18 2006-08-23 AKG Acoustics GmbH Membrane pour convertisseur dynamique
CN1905756A (zh) * 2005-07-29 2007-01-31 富准精密工业(深圳)有限公司 微型电声装置的音膜
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
US8121337B2 (en) * 2008-09-08 2012-02-21 Eugen Nedelcu Free air magnetic circuit and speaker
FR2941837B1 (fr) 2009-02-02 2016-09-16 Orkidia Audio Equipage mobile et transducteur electrodynamique pourvu d'un tel equipage mobile.
HU229608B1 (en) * 2011-10-04 2014-03-28 Zoltan Bay Loudspeaker
KR101760754B1 (ko) * 2016-08-23 2017-07-25 주식회사 이엠텍 방수 기능 사이드 진동판 및 이를 구비하는 마이크로스피커

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56146400A (en) * 1980-04-16 1981-11-13 Matsushita Electric Ind Co Ltd Speaker
JPS57168599A (en) * 1981-04-09 1982-10-16 Mitsubishi Electric Corp Bobbinless voice coil
JPS58153496A (ja) * 1982-03-05 1983-09-12 Sanyo Electric Co Ltd スピ−カの製造方法
JPH03220897A (ja) * 1990-01-25 1991-09-30 Matsushita Electric Ind Co Ltd スピーカ
JPH03273800A (ja) * 1990-03-22 1991-12-04 Matsushita Electric Ind Co Ltd ドーム型スピーカ

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2392143A (en) * 1942-11-30 1946-01-01 Rca Corp Loud-speaker
NL283889A (fr) * 1961-10-04
US3616529A (en) * 1967-08-31 1971-11-02 Philips Corp Transducer and method of making same
JPS53148425A (en) 1977-05-31 1978-12-25 Kenkichi Tsukamoto Electric sound transducer
JPS603277B2 (ja) 1978-06-15 1985-01-26 ソニー株式会社 スピーカ装置
US4532383A (en) * 1980-01-04 1985-07-30 Willy Erazm A Electroacoustic transducer having a variable thickness diaphragm
NL8202529A (nl) 1982-06-23 1984-01-16 Philips Nv Elektro-akoestische omzetter met een lange slag.
NL8301653A (nl) 1983-05-10 1984-12-03 Philips Nv Elektro-akoestische omzetter met een luchtdoorlatend membraan.
US5526441A (en) * 1991-11-15 1996-06-11 Codnia; Basilio Full range convex electrodynamic loudspeaker
DE4312159C1 (de) * 1993-04-14 1994-06-23 Sennheiser Electronic Elektrodynamischer Wandler
KR950024611A (ko) * 1994-01-05 1995-08-21 구쯔자와 겐따로우 자기회로를 구비한 스피커

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56146400A (en) * 1980-04-16 1981-11-13 Matsushita Electric Ind Co Ltd Speaker
JPS57168599A (en) * 1981-04-09 1982-10-16 Mitsubishi Electric Corp Bobbinless voice coil
JPS58153496A (ja) * 1982-03-05 1983-09-12 Sanyo Electric Co Ltd スピ−カの製造方法
JPH03220897A (ja) * 1990-01-25 1991-09-30 Matsushita Electric Ind Co Ltd スピーカ
JPH03273800A (ja) * 1990-03-22 1991-12-04 Matsushita Electric Ind Co Ltd ドーム型スピーカ

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 028 (E - 095) 19 February 1982 (1982-02-19) *
PATENT ABSTRACTS OF JAPAN vol. 007, no. 008 (E - 152) 13 January 1983 (1983-01-13) *
PATENT ABSTRACTS OF JAPAN vol. 007, no. 272 (E - 214) 3 December 1983 (1983-12-03) *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 506 (E - 1148) 20 December 1991 (1991-12-20) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 091 (E - 1174) 5 March 1992 (1992-03-05) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001056330A2 (fr) * 2000-01-27 2001-08-02 Koninklijke Philips Electronics N.V. Transducteur electroacoustique comportant un diaphragme dote de saillies de montage de bobine et de parois de stabilisation intercalees
WO2001056330A3 (fr) * 2000-01-27 2002-06-06 Koninkl Philips Electronics Nv Transducteur electroacoustique comportant un diaphragme dote de saillies de montage de bobine et de parois de stabilisation intercalees
US6510232B2 (en) 2000-01-27 2003-01-21 Koninklijke Philips Electronics N.V. Electroacoustic transducer having diaphragm with coil mounting projections and interposed stabilizing walls
DE202010006188U1 (de) * 2010-04-28 2011-03-03 Elac Electroacustic Gmbh Lautsprecher mit Aktuator und Dichtmembran

Also Published As

Publication number Publication date
JP3926473B2 (ja) 2007-06-06
ES2170470T3 (es) 2002-08-01
ATE211346T1 (de) 2002-01-15
DK0876079T3 (da) 2002-04-08
AT405997B (de) 2000-01-25
US6587570B1 (en) 2003-07-01
ATA75597A (de) 1998-06-15
DE59802496D1 (de) 2002-01-31
JPH10322791A (ja) 1998-12-04
EP0876079B1 (fr) 2001-12-19

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