EP1156701A2 - Transducteur électroacoustique à dimensions réduites - Google Patents

Transducteur électroacoustique à dimensions réduites Download PDF

Info

Publication number: EP1156701A2
Authority: EP; European Patent Office
Prior art keywords: housing; pot; electroacoustic transducer; component; yoke
Prior art date: 2000-05-15
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

EP01890099A

Other languages

German (de)

English (en)

Other versions

EP1156701B1 (fr

EP1156701A3 (fr

Inventor

Richard Pribyl

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.)

2000-05-15

Filing date

2001-03-28

Publication date

2001-11-21

2001-03-28 Application filed by AKG Acoustics GmbH filed Critical AKG Acoustics GmbH

2001-03-28 Priority to AT01890099T priority Critical patent/ATE405128T1/de

2001-11-21 Publication of EP1156701A2 publication Critical patent/EP1156701A2/fr

2007-04-18 Publication of EP1156701A3 publication Critical patent/EP1156701A3/fr

2008-08-13 Application granted granted Critical

2008-08-13 Publication of EP1156701B1 publication Critical patent/EP1156701B1/fr

2021-03-28 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type

Definitions

Classic electroacoustic transducers that work on the electrodynamic principle, consist essentially of a pot-like housing, open on the front, into which a magnet system is used in the front, which consists of the actual magnet and a there is a multi-part yoke, the yoke having an annular air gap on the front trains.
a membrane attached to the front of the magnet system has one Voice coil that protrudes into the air gap of the yoke and there in the axial direction can swing.
the individual yoke parts are mostly: a pot-like, bottom side arranged part, in the center of which the magnet is glued and a circular Front part, the outer circumference of which forms the inner circumference of the air gap.
the method according to the invention is for small size electroacoustic transducers Particularly suitable, since only with such miniaturized transducers by Copper plating and nickel plating achievable metal cross sections are sufficient to Ladder can be used.
contacts 4 for the supply wires for the voice coil (not shown) of the membrane are arranged on a projection 3 of the housing 2.
These contacts 4 usually consist of sheet metal as stamped or bent parts, which are to be fitted to the projection 3 with a precise fit and not wobbling. These parts must therefore be fixed by gluing, using an adhesive drop with a volume of about 0.3 mm 3 .
This dosage and correct placement encounter major problems in automatic series production and require human monitoring and support.
a component 11 is produced in an injection mold essentially has the shape of the pot-like yoke part 1, but on the one Projection 3 corresponding projection 13 is integrally formed with.
This component consists of a metallizable plastic and it is when in the injection mold is solidified accordingly, this is not removed, but only the top of the Injection mold is replaced by another upper part and this then becomes pot-like Component 11 in essential areas surrounded by a plastic that is not is metallizable and finally has an outer shape, at least in essentially the shape of the housing 2 of conventional electroacoustic transducers corresponds.
This outer part 12 preferably has at one point, as shown in FIG. 2, a recess or notch 16 so that an area 14 'of the projection 13 over a free surface lying in the area of the notch 16 with the inner area of the Pot-like component 11 is connected.
the further processing of the semi-finished electro-acoustic transducer thus produced takes place in the usual way: the magnet becomes in the center of the pot-like component 11 including the disc-shaped yoke part already glued to it, whereby by Appropriate guidance or teaching ensures sufficient centricity. It then the membrane, if necessary with a mounting or retaining ring on Housing part 12 attached, the voice coil mounted on the diaphragm centrally in the air gap comes to rest.
the voice coil supply wires are in the Area of the membranes fastening from the inside of the then closed transducer guided and each with one of the two contacts 14 ', 14 "mechanically and electrically conductively connected, for example by friction welding or ultrasonic welding.
FIG. 3 and 4 show a variant possible by the measures according to the invention with a slightly different construction of the transducer than that obtained according to FIG. 2: It will thereby how the exploded in the axial direction in the manner of an explosion sketch
the illustration shows a body part 21 with a correspondingly partially galvanized surface extrusion-coated with a housing part 22, the material of the housing part 22 not is galvanizable.
the body part 21 has integrally formed a central elevation represents the inner yoke part 23.
FIGS. 5 and 6 Another variant is shown in FIGS. 5 and 6; one (or several appropriately arranged) used radially magnetized magnet. 5 shows this the previous structure of such electroacoustic transducers according to the state of the Technology and Fig. 6 shows a variant according to the invention.
FIG. 5 there is an electroacoustic transducer with radial magnetized magnets made of several plate-shaped magnets that are normal to the Platelet main plane are magnetized, these platelets along the lateral surface of a regular polygon.
the cause of using this The arrangement is that it is extremely difficult to use radial magnets with radial To produce magnetization, so that you are quasi-ring-shaped Arrangement helps.
FIG. 6 A partially galvanic Metallized outer housing 42 and an at least partially galvanized yoke part 41 are provided with correspondingly flat surfaces 43, 45 during injection molding, between which the plate-shaped magnets 44 lie in the assembled state come.
the surfaces 43, 45 and the adjacent areas (Fig. 6 up), the finally leave the air gap between them are galvanized with metal coated and serve as a yoke for the magnet system.
FIG. 6 A centrally symmetrical transducer body has been shown in Fig. 6, but it is of course also possible and advantageous here, the contacts, as with the 2 and 3, to be trained at the same time and also galvanized, what can happen analogously to the formation of Fig. 2 or 3 and here no closer Explanation needs more.
annular groove is indicated on the upper outer edge of the housing part 42, the serves to receive a fastening ring for a membrane, this ring groove can of course, be designed differently, the attachment of the membrane to one Housing part is part of the state of the art, due to the integral manufacture of Injection molding can achieve extremely high centricity without this being otherwise would cause necessary costs.

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Transducers For Ultrasonic Waves (AREA)
Piezo-Electric Transducers For Audible Bands (AREA)
Details Of Audible-Bandwidth Transducers (AREA)
Diaphragms For Electromechanical Transducers (AREA)

EP01890099A 2000-05-15 2001-03-28 Transducteur électroacoustique à dimensions réduites Expired - Lifetime EP1156701B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT01890099T ATE405128T1 (de)	2000-05-15	2001-03-28	Elektroakustischer wandler mit kleinen abmessungen

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
AT8422000		2000-05-15
AT0084200A AT411559B (de)	2000-05-15	2000-05-15	Elektroakustischer wandler mit kleinen abmessungen

Publications (3)

Publication Number	Publication Date
EP1156701A2 true EP1156701A2 (fr)	2001-11-21
EP1156701A3 EP1156701A3 (fr)	2007-04-18
EP1156701B1 EP1156701B1 (fr)	2008-08-13

Family

ID=3682054

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP01890099A Expired - Lifetime EP1156701B1 (fr)	2000-05-15	2001-03-28	Transducteur électroacoustique à dimensions réduites

Country Status (7)

Country	Link
US (2)	US6668066B2 (fr)
EP (1)	EP1156701B1 (fr)
JP (1)	JP2001326992A (fr)
CN (1)	CN1232091C (fr)
AT (2)	AT411559B (fr)
DE (1)	DE50114205D1 (fr)
DK (1)	DK1156701T3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2003289596A (ja) *	2002-03-27	2003-10-10	Citizen Electronics Co Ltd	スピーカ及びその製造方法
KR20020057897A (ko) *	2002-05-28	2002-07-12	전창만	다기능 전자음향변환기의 구조
DK1515582T3 (da)	2003-09-11	2006-05-15	Akg Acoustics Gmbh	Dynamisk elektroaukustisk omformer, navnlig lille höjtaler
EP1694094A1 (fr) *	2005-02-18	2006-08-23	AKG Acoustics GmbH	Membrane pour convertisseur dynamique
FR2919486B1 (fr) *	2007-07-31	2009-10-02	Captomed Entpr Unipersonnelle	Capteur de pression auto-etalonnable.
DE102009038593A1 (de) *	2009-08-26	2011-03-03	Beyerdynamic Gmbh & Co. Kg	Schallwandler-Magnetsystem
ITPD20110191A1 (it) *	2011-06-13	2012-12-14	Maurizio Servadio	Trasduttore elettromeccanico/elettroacustico sottile
CN112134018B (zh) *	2020-10-26	2024-11-26	广东华旃电子有限公司	汽车天线屏蔽组件及其制作方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AT366862B (de) *	1980-07-28	1982-05-10	Akg Akustische Kino Geraete	Elektroakustischer wandler nach dem zweiwegprinzip
US6151402A (en) *	1995-09-02	2000-11-21	New Transducers Limited	Vibration transducers
US6047077A (en) *	1998-09-29	2000-04-04	Larsen; John T.	Bipolar speaker
JP3035704B1 (ja) *	1998-10-28	2000-04-24	株式会社アクーヴ・ラボ	電気−機械振動変換器
JP4276315B2 (ja) *	1998-11-17	2009-06-10	シチズン電子株式会社	電磁型発音体
JP2002058095A (ja) *	2000-08-11	2002-02-22	Star Micronics Co Ltd	電磁音響変換器

2000
- 2000-05-15 AT AT0084200A patent/AT411559B/de not_active IP Right Cessation
2001
- 2001-03-28 DE DE50114205T patent/DE50114205D1/de not_active Expired - Fee Related
- 2001-03-28 AT AT01890099T patent/ATE405128T1/de not_active IP Right Cessation
- 2001-03-28 DK DK01890099T patent/DK1156701T3/da active
- 2001-03-28 EP EP01890099A patent/EP1156701B1/fr not_active Expired - Lifetime
- 2001-05-09 US US09/852,444 patent/US6668066B2/en not_active Expired - Fee Related
- 2001-05-11 CN CN01117914.7A patent/CN1232091C/zh not_active Expired - Fee Related
- 2001-05-14 JP JP2001143105A patent/JP2001326992A/ja not_active Withdrawn
2003
- 2003-10-02 US US10/678,453 patent/US7245738B2/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
DE50114205D1 (de)	2008-09-25
US20010040972A1 (en)	2001-11-15
DK1156701T3 (da)	2008-12-15
CN1327335A (zh)	2001-12-19
JP2001326992A (ja)	2001-11-22
US7245738B2 (en)	2007-07-17
ATA8422000A (de)	2003-07-15
EP1156701B1 (fr)	2008-08-13
US6668066B2 (en)	2003-12-23
EP1156701A3 (fr)	2007-04-18
ATE405128T1 (de)	2008-08-15
AT411559B (de)	2004-02-25
CN1232091C (zh)	2005-12-14
US20040066950A1 (en)	2004-04-08

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Publication	Publication Date	Title
DE69106432T2 (de)	1995-06-08	Piezoelektrischer Wandler.
DE60221857T2 (de)	2008-05-08	Akustischen Miniwandler
DE3128686C2 (fr)	1989-03-16
DE69934119T2 (de)	2007-09-20	Schall-/ schwingungsgenerator
DE69423128T2 (de)	2000-10-12	Elektroakustischer Wandler
EP0480160A2 (fr)	1992-04-15	Haut-parleur haute fréquence en forme de calotte
DE69211512T2 (de)	1997-01-16	Ausgewogene Armaturwandler mit transversalem Zwischenraum
DE69320306T2 (de)	1999-02-11	Elektroakustischer Wandler
DE102016119005A1 (de)	2017-04-06	Elektroakustischer Wandler
AT411559B (de)	2004-02-25	Elektroakustischer wandler mit kleinen abmessungen
EP0615398B1 (fr)	1998-05-13	Transconducteur électroacoustique avec un masque
AT410050B (de)	2003-01-27	Kondensatormikrofon
DE2909477C2 (de)	1986-08-14	Anordnung zum Umwandeln akustischer Schwingungen in elektrische Schwingungen und umgekehrt, mit mindestens einem Kondensatorelektretelement, das an eine elektronische Schaltungsanordnung angeschlossen ist
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DE69917148T2 (de)	2005-05-04	Elektroakustischer wandler und membrane für elektroakustischen wandler
DE1224366B (de)	1966-09-08	Elektroakustischer Wandler und Vorrichtung zu seiner Herstellung
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DE3923189A1 (de)	1991-01-24	Lautsprecher
EP1259096A2 (fr)	2002-11-20	Isolation interne d' une capsule électroacoustique
DE2936965C2 (de)	1982-04-01	Permanentdynamische elektroakustische Wandlerkapsel
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