EP1102517A2 - Electroacoustic transducer for hearing aids - Google Patents

Electroacoustic transducer for hearing aids Download PDF

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Publication number
EP1102517A2
EP1102517A2 EP00120789A EP00120789A EP1102517A2 EP 1102517 A2 EP1102517 A2 EP 1102517A2 EP 00120789 A EP00120789 A EP 00120789A EP 00120789 A EP00120789 A EP 00120789A EP 1102517 A2 EP1102517 A2 EP 1102517A2
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EP
European Patent Office
Prior art keywords
converter according
membranes
anchor
arrangement
tongues
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
EP00120789A
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German (de)
French (fr)
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EP1102517B1 (en
EP1102517A3 (en
Inventor
Torsten Dr. Niederdränk
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Sivantos GmbH
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Siemens Audioligische Technik GmbH
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Publication of EP1102517A3 publication Critical patent/EP1102517A3/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
    • 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
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H04R25/604—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers

Definitions

  • the invention relates to an electromagnetic transducer Sound generation in hearing aids.
  • a z. B. from I. Veit, Technical Acoustics, Vogel Verlag, Würzburg, 1978, known electromagnetic Transducer of the aforementioned type has a housing on, in which an electromagnetic drive is provided which is a coil, a drive magnet and a Anchor assembly includes. There is also a membrane arrangement in the housing attached mechanically to the anchor assembly is coupled to movements of the armature arrangement in sound signals to walk.
  • the known electromagnetic transducer has only one Anchor and a membrane, so that the efficiency of the Converter is limited and also when operating the converter moving parts to vibrate the entire transducer assembly to lead. So there are feedback phenomena on the hearing aid not be ruled out.
  • the invention has for its object an electromagnetic Train transducers such that, on the one hand, the efficiency the transducer arrangement is improved and on the other feedback caused by vibrations of the device can be avoided or at least reduced.
  • This object is achieved in that the membrane arrangement comprises two separate membranes that face each other Sides of the drive are arranged, also identical are trained and driven in opposite directions, that of the driven or driving by the movement Parts mechanical total momentum is minimized.
  • the two membranes are related symmetrically be arranged on the drive. This means one consistent continuation of the idea of symmetry.
  • the anchor assembly comprises two separately movable Anchor. Each anchor is connected to one of the membranes. This leads to a further symmetrization of the overall structure and the individual components.
  • the two anchors can be identical and in connection with the two Membranes are preassembled.
  • Claims 5 and 6 relate to a first embodiment of the invention in which two separate anchors between the respective poles of a drive magnet and the central region of the membranes are arranged and at least sections parallel to the membranes.
  • the membranes are connected in the middle to the anchors.
  • the anchors When excited the field coil, the anchors are opposed to either both attracted or repelled together by the drive magnet, resulting in an opposite but symmetrized movement of the membranes and also the drive parts.
  • Claims 7 ff relate to a modified second Embodiment in which the disposed between the membranes Drive magnet is divided in the middle, but the armature not between the ends of the drive magnet and the diaphragms are arranged, but as parallel to each other Anchor tongues in a central gap of the drive magnet.
  • the transducer tongues are connected to the membranes via a rigid connecting element that at the free end each anchor tongue is attached. Both anchor tongues go about intermediate areas bent out of their common level over into a U-end area of the armature by a coil is surrounded.
  • the anchor tongues thus form the central areas and the U-end region of the anchor elements a closed one magnetic circuit, resulting in a particularly advantageous compensation the magnetic direct force when using the Double membrane principle with two anchors.
  • the electromagnetic transducer 1 has a housing 2, in which an electromagnetic drive 3 is arranged, the a coil 4, a drive magnet 5 and an armature arrangement 6 includes.
  • a membrane arrangement is also provided, which comprises two separate membranes 7, 7 ', which are on themselves opposite sides of the drive 3 are arranged, identically designed and driven in opposite directions are that driven by the movement of the or driving Parts mechanical total impulse minimized is.
  • Both membranes 7 are symmetrical with respect to the drive 3 arranged and close one with an outlet pipe socket between them 8 related airspace 9.
  • the armature arrangement 6 consists of two separately movable anchors 10, 10 ', each anchor 10, 10' with one of the membranes 7, 7 'is connected.
  • Embodiments are the armature between the drive magnet 5 and the central region of the membranes 7, 7 ' arranged and run in sections parallel to the membranes 7, 7 '.
  • the two anchors 10, 10 ' are by a U-shaped, resilient element is formed.
  • the coil 4 is arranged.
  • the drive magnet 5 sits between the U-legs 13 of the U-shaped element.
  • the drive magnet 5 is divided in the middle, two essentially the same parallel next to each other Armature tongues 15 are in a central gap 16 of the drive magnet arranged.
  • Each anchor tongue 15 is on hers free end 17 via a connecting element 18 with one of the two membranes 7, 7 'rigidly connected.
  • the two anchor tongues 15 go through from their common Level bent-out intermediate areas 20 in a U-end area 21 of the armature arrangement 6, which passes through the coil 4.
  • the anchor tongues 15, the intermediate areas 20 and the U-end area 21 of the armature arrangement 6 form a closed one magnetic circuit.
  • the membranes 7, 7 ' run parallel to housing side walls 25. In between space-saving the drive magnet, which with both membranes 7, 7 'cooperates. In the embodiment shown in Figures 2-4 are those separated by the central gap 16 Parts of the drive magnet 5 held in a magnetic yoke 27.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Neurosurgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Hard Magnetic Materials (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Amplifiers (AREA)
  • Control Of El Displays (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Electromagnets (AREA)

Abstract

An electromagnetic transducer for generating sound in an electronic hearing aid has a housing containing an electromagnetic drive that has a coil, a drive magnet and an armature arrangement. Further, a membrane arrangement is provided in the housing that is mechanically coupled to the armature arrangement. For reducing vibrations due to the driving and driven parts of the transducer, as well as for improving the efficiency, the membrane arrangement is formed by two separate membranes that are arranged at opposite sides of the drive, are identically fashioned and can be oppositely driven such that the overall mechanical pulse occurring due to the movement of the driven or driving parts is minimized.

Description

Die Erfindung betrifft einen elektromagnetischen Wandler zur Schallerzeugung in Hörhilfen. Ein z. B. aus I. Veit, Technische Akustik , Vogel Verlag, Würzburg, 1978, bekannter elektromagnetischer Wandler der vorbezeichneten Art weist ein Gehäuse auf, in welchem ein elektromagnetischer Antrieb vorgesehen ist, der eine Spule, einen Antriebsmagneten und eine Ankeranordnung umfaßt. Außerdem ist im Gehäuse eine Membranenanordnung befestigt, die mechanisch an die Ankeranordnung angekoppelt ist, um Bewegungen der Ankeranordnung in Schallsignale zu wandeln.The invention relates to an electromagnetic transducer Sound generation in hearing aids. A z. B. from I. Veit, Technical Acoustics, Vogel Verlag, Würzburg, 1978, known electromagnetic Transducer of the aforementioned type has a housing on, in which an electromagnetic drive is provided which is a coil, a drive magnet and a Anchor assembly includes. There is also a membrane arrangement in the housing attached mechanically to the anchor assembly is coupled to movements of the armature arrangement in sound signals to walk.

Der bekannte elektromagnetische Wandler weist lediglich einen Anker und eine Membrane auf, so daß der Wirkungsgrad des Wandlers begrenzt ist und zudem beim Betrieb des Wandlers die bewegten Teile zu Vibrationen der gesamten Wandleranordnung führen. Damit sind Rückkopplungserscheinungen am Hörgerät nicht auszuschließen.The known electromagnetic transducer has only one Anchor and a membrane, so that the efficiency of the Converter is limited and also when operating the converter moving parts to vibrate the entire transducer assembly to lead. So there are feedback phenomena on the hearing aid not be ruled out.

Der Erfindung liegt die Aufgabe zugrunde, einen elektromagnetischen Wandler derart auszubilden, daß zum einen der Wirkungsgrad der Wandleranordnung verbessert wird und zum anderen durch Vibrationen hervorgerufene Rückkopplungserscheinungen des Gerätes vermieden oder zumindest verringert werden. Diese Aufgabe wird dadurch gelöst, daß die Membranenanordnung zwei gesonderte Membranen umfaßt, die auf sich gegenüberliegenden Seiten des Antriebes angeordnet sind, ferner identisch ausgebildet sind und derartig gegenläufig angetrieben werden, daß der durch die Bewegung der angetriebenen oder antreibenden Teile auftretende mechanische Gesamtimpuls minimiert ist. The invention has for its object an electromagnetic Train transducers such that, on the one hand, the efficiency the transducer arrangement is improved and on the other feedback caused by vibrations of the device can be avoided or at least reduced. This object is achieved in that the membrane arrangement comprises two separate membranes that face each other Sides of the drive are arranged, also identical are trained and driven in opposite directions, that of the driven or driving by the movement Parts mechanical total momentum is minimized.

Als Kern der Erfindung wird es angesehen, in der Wandleranordnung zwei Prinzipien konsequent durchzuführen, nämlich einerseits eine hohe Symmetrie der bewegten, d. h. der antreibenden und der angetriebenen Teile und zum anderen eine strikte Gegenläufigkeit der bewegenden und bewegten Teile vorzusehen, daß der durch die Bewegung dieser Teile auftretende mechanische Gesamtimpuls minimiert ist, wodurch Vibrationen vermieden und damit Rückkopplungserscheinungen von vorneherein weitgehend unterbunden werden können.It is regarded as the core of the invention in the converter arrangement to consistently implement two principles, namely on the one hand a high symmetry of the moving, d. H. the driving and driven parts and the other one strict opposition of the moving and moving parts to provide for the movement of these parts total mechanical impulse is minimized, causing vibration avoided and thus feedback phenomena from can be largely prevented from the outset.

Gemäß Anspruch 2 sollen die beiden Membranen symmetrisch bezogen auf den Antrieb angeordnet sein. Dies bedeutet eine konsequente Weiterführung des Symmetriegedankens.According to claim 2, the two membranes are related symmetrically be arranged on the drive. This means one consistent continuation of the idea of symmetry.

Gemäß Anspruch 3 ist zwischen den beiden Membranen ein mit einem Ausgangsrohrstutzen des Gehäuses in Verbindung stehender Luftraum eingeschlossen. Durch die Gegenläufigkeit der Bewegung der beiden Membranen wird eine erhebliche Verbesserung des Wirkungsgrades erreicht, so daß grundsätzlich mit kleineren, d. h. weniger heftigen Bewegungen der antreibenden und angetriebenen Teile eine ausreichende Leistung des Wandlers erzielbar ist, was wiederum der Reduzierung der Rückkopplungen verursachenden Schwingungen zugute kommt.According to claim 3 is a with between the two membranes an output pipe socket of the housing related Airspace included. Due to the contradiction of the Movement of the two membranes will be a significant improvement of the efficiency achieved, so that basically with smaller, d. H. less violent movements of the driving and driven parts have sufficient converter performance is achievable, which in turn reduces the feedback causing vibrations.

Gemäß Anspruch 4 umfaßt die Ankeranordnung zwei getrennt bewegbare Anker. Jeder Anker ist mit einer der Membranen verbunden. Dies führt zu einer weiteren Symmetrisierung des Gesamtaufbaus und der einzelnen Bauteile. Die beiden Anker können identisch ausgebildet sein und in Verbindung mit den beiden Membranen vormontiert werden.According to claim 4, the anchor assembly comprises two separately movable Anchor. Each anchor is connected to one of the membranes. This leads to a further symmetrization of the overall structure and the individual components. The two anchors can be identical and in connection with the two Membranes are preassembled.

Die Ansprüche 5 und 6 beziehen sich auf eine erste Ausführungsform der Erfindung, bei welcher zwei getrennte Anker zwischen den jeweiligen Polen eines Antriebsmagneten und dem Mittelbereich der Membranen angeordnet sind und zumindest abschnittsweise parallel zu den Membranen verlaufen. Die Membranen sind mittig mit den Ankern verbunden. Bei Erregung der Feldspule werden die Anker gegenläufig entweder beide gemeinsam von dem Antriebsmagneten angezogen oder abgestoßen, was zu einer gegenläufigen aber symetrisierten Bewegung der Membranen und auch der Antriebsteile führt.Claims 5 and 6 relate to a first embodiment of the invention in which two separate anchors between the respective poles of a drive magnet and the central region of the membranes are arranged and at least sections parallel to the membranes. The membranes are connected in the middle to the anchors. When excited the field coil, the anchors are opposed to either both attracted or repelled together by the drive magnet, resulting in an opposite but symmetrized movement of the membranes and also the drive parts.

Die Ansprüche 7 ff beziehen sich auf eine modifizierte zweite Ausführungsform, bei welcher der zwischen den Membranen angeordnete Antriebsmagnet mittig geteilt ist, die Anker aber nicht zwischen den Enden des Antriebsmagneten und den Membranen angeordnet sind, sondern als parallel nebeneinander verlaufende Ankerzungen in einem Mittelspalt des Antriebsmagnetes. Die Verbindung der Wandlerzungen mit den Membranen erfolgt über ein starres Verbindungselement, das am freien Ende einer jeden Ankerzunge befestigt ist. Beide Ankerzungen gehen über aus ihrer gemeinsamen Ebene ausgebogene Zwischenbereiche in einen U-Endbereich des Ankers über, der von einer Spule umgeben ist. Damit bilden die Ankerzungen, die Mittelbereiche und der U-Endbereich der Ankerelemente einen geschlossenen magnetischen Kreis, was zu einer besonders vorteilhaften Kompensation der magnetischen Gleichkraft bei Verwendung des Doppelmembranprinzips mit zwei Ankern führt.Claims 7 ff relate to a modified second Embodiment in which the disposed between the membranes Drive magnet is divided in the middle, but the armature not between the ends of the drive magnet and the diaphragms are arranged, but as parallel to each other Anchor tongues in a central gap of the drive magnet. The transducer tongues are connected to the membranes via a rigid connecting element that at the free end each anchor tongue is attached. Both anchor tongues go about intermediate areas bent out of their common level over into a U-end area of the armature by a coil is surrounded. The anchor tongues thus form the central areas and the U-end region of the anchor elements a closed one magnetic circuit, resulting in a particularly advantageous compensation the magnetic direct force when using the Double membrane principle with two anchors.

Die weiteren Patentansprüche betreffen vorteilhafte Weiterbildungen insbesondere hinsichtlich der Symetrisierung und der Verbesserung des Wirkungsgrades, was insbesondere auch für eine Vereinfachung der Herstellung und der Lagerhaltung bedeutungsvoll ist.The other claims relate to advantageous developments especially with regard to the symmetrization and improving efficiency, which in particular to simplify manufacturing and warehousing is significant.

Die Erfindung ist anhand von zwei Ausführungsbeispielen in den Zeichnungsfiguren näher erläutert. Diese zeigen

FIG 1
eine schematische Darstellung eines elektromagnetischen Schallwandlers;
FIG 2
einen schematischen Aufbau eines elektromagnetischen Schallwandlers mit kompensierter magnetischer Gleichkraft;
FIG 3
einen Schnitt gemäß Schnittlinie III - III in FIG 2;
FIG 4
einen Schnitt gemäß Schnittlinie IV - IV in FIG 2.
The invention is explained in more detail with reference to two exemplary embodiments in the drawing figures. These show
FIG. 1
a schematic representation of an electromagnetic sound transducer;
FIG 2
a schematic structure of an electromagnetic sound transducer with compensated magnetic direct force;
FIG 3
a section along section line III - III in Figure 2;
FIG 4
a section along section line IV - IV in Figure 2.

Der elektromagnetische Wandler 1 weist ein Gehäuse 2 auf, in welchem ein elektromagnetischer Antrieb 3 angeordnet ist, der eine Spule 4, einen Antriebsmagneten 5 und eine Ankeranordnung 6 umfaßt. Außerdem ist eine Membranenanordnung vorgesehen, die zwei gesonderte Membranen 7, 7' umfaßt, die auf sich gegenüberliegenden Seiten des Antriebs 3 angeordnet sind, identisch ausgebildet und derartig gegenläufig antreibbar sind, daß der durch die Bewegung der angetriebenen oder antreibenden Teile auftretende mechanische Gesamtimpuls minimiert ist.The electromagnetic transducer 1 has a housing 2, in which an electromagnetic drive 3 is arranged, the a coil 4, a drive magnet 5 and an armature arrangement 6 includes. A membrane arrangement is also provided, which comprises two separate membranes 7, 7 ', which are on themselves opposite sides of the drive 3 are arranged, identically designed and driven in opposite directions are that driven by the movement of the or driving Parts mechanical total impulse minimized is.

Beide Membranen 7 sind symmetrisch bezogen auf den Antrieb 3 angeordnet und schließen zwischen sich einen mit einem Ausgangsrohrstutzen 8 in Verbindung stehenden Luftraum 9 ein.Both membranes 7 are symmetrical with respect to the drive 3 arranged and close one with an outlet pipe socket between them 8 related airspace 9.

Die Ankeranordnung 6 besteht aus zwei getrennt bewegbaren Ankern 10, 10', wobei jeder Anker 10, 10' mit einer der Membranen 7, 7' verbunden ist. Bei dem in Zeichnungsfigur 1 dargestellten Ausführungsbeispiel sind die Anker zwischen dem Antriebsmagneten 5 und dem Mittelbereich der Membranen 7, 7' angeordnet und verlaufen abschnittsweise parallel zu den Membranen 7, 7'. Die beiden Anker 10, 10' werden durch ein U-förmiges, federndes Element gebildet. Im U-Mittelbereich 12 ist die Spule 4 angeordnet. Der Antriebsmagnet 5 sitzt zwischen den U-Schenkeln 13 des U-förmigen Elementes. The armature arrangement 6 consists of two separately movable anchors 10, 10 ', each anchor 10, 10' with one of the membranes 7, 7 'is connected. In the illustrated in drawing figure 1 Embodiments are the armature between the drive magnet 5 and the central region of the membranes 7, 7 ' arranged and run in sections parallel to the membranes 7, 7 '. The two anchors 10, 10 'are by a U-shaped, resilient element is formed. In the U middle section 12 the coil 4 is arranged. The drive magnet 5 sits between the U-legs 13 of the U-shaped element.

Bei dem in Zeichnungsfigur 2 - 4 dargestellten zweiten Ausführungsbeispiel ist der Antriebsmagnet 5 mittig geteilt, zwei im wesentlichen gleichebig parallel nebeneinander verlaufende Ankerzungen 15 sind in einem Mittelspalt 16 des Antriebsmagneten angeordnet. Jede Ankerzunge 15 ist an ihrem freien Ende 17 über ein Verbindungselement 18 mit einer der beiden Membranen 7, 7' starr verbunden.In the second exemplary embodiment shown in drawing figures 2-4 the drive magnet 5 is divided in the middle, two essentially the same parallel next to each other Armature tongues 15 are in a central gap 16 of the drive magnet arranged. Each anchor tongue 15 is on hers free end 17 via a connecting element 18 with one of the two membranes 7, 7 'rigidly connected.

Die beiden Ankerzungen 15 gehen durch aus ihrer gemeinsamen Ebene ausgebogene Zwischenbereiche 20 in einen U-Endbereich 21 der Ankeranordnung 6 über, der die Spule 4 durchsetzt.The two anchor tongues 15 go through from their common Level bent-out intermediate areas 20 in a U-end area 21 of the armature arrangement 6, which passes through the coil 4.

Die Ankerzungen 15, die Zwischenbereiche 20 und der U-Endbereich 21 der Ankeranordnung 6 bilden dabei einen geschlossenen magnetischen Kreis.The anchor tongues 15, the intermediate areas 20 and the U-end area 21 of the armature arrangement 6 form a closed one magnetic circuit.

Bei allen Ausführungsbeispielen verlaufen die Membranen 7, 7' parallel zu Gehäuseseitenwandungen 25. Dazwischen liegt platzsparend der Antriebsmagnet, der mit beiden Membranen 7, 7' zusammenwirkt. Bei dem in Figuren 2 - 4 dargestellten Ausführungsbeispiel sind die durch den Mittelspalt 16 getrennten Teile des Antriebsmagneten 5 in einem Magnetjoch 27 gehalten.In all exemplary embodiments, the membranes 7, 7 'run parallel to housing side walls 25. In between space-saving the drive magnet, which with both membranes 7, 7 'cooperates. In the embodiment shown in Figures 2-4 are those separated by the central gap 16 Parts of the drive magnet 5 held in a magnetic yoke 27.

In den Zeichnungsfiguren 3 und 4 ist deutlich sichtbar, daß die parallel und gleichebig zueinander verlaufenden Bereiche der Ankerzungen 15, 15' durch einen schmalen Luftspalt 30 voneinander getrennt sind.In the drawing figures 3 and 4 it is clearly visible that the areas that run parallel and evenly to each other the anchor tongues 15, 15 'through a narrow air gap 30 are separated from each other.

Claims (18)

Elektromagnetischer Wandler (1) zur Schallerzeugung in Hörhilfen, insbesondere miniaturisierten elektronischen Hörgeräten, mit einem Gehäuse(2), einem darin angeordneten, mindestens eine Spule(4), einen Antriebsmagneten (5) und eine Ankeranordnung (6) umfassenden elektromagnetischen Antrieb (3) und einer im Gehäuse (2) befestigten Membranenanordnung, die mechanisch an die Ankeranordnung (6) angekoppelt ist, um Bewegungen der Ankeranordnung (6) in Schallsignale zu wandeln,
dadurch gekennzeichnet, daß die Membranenanordnung zwei gesonderte Membranen (7, 7') umfaßt, die auf sich gegenüberliegenden Seiten des Antriebs (3) angeordnet, identisch ausgebildet und derart gegenläufig antreibbar sind, daß der durch die Bewegung der angetriebenen oder antreibenden Teile auftretende mechanische Gesamtimpuls minimiert ist.Electromagnetic transducer (1) for generating sound in hearing aids, in particular miniaturized electronic hearing aids, with a housing (2), an electromagnetic drive (3) comprising at least one coil (4), a drive magnet (5) and an armature arrangement (6). and a membrane arrangement fastened in the housing (2) and mechanically coupled to the armature arrangement (6) in order to convert movements of the armature arrangement (6) into sound signals,
characterized in that the diaphragm arrangement comprises two separate diaphragms (7, 7 ') which are arranged on opposite sides of the drive (3), are of identical design and can be driven in opposite directions in such a way that the total mechanical pulse resulting from the movement of the driven or driving parts is minimized. Wandler nach Anspruch 1,
dadurch gekennzeichnet , daß die beiden Membranen (7, 7') symmetrisch bezogen auf den Antrieb (3) angeordnet sind.Converter according to claim 1,
characterized in that the two membranes (7, 7 ') are arranged symmetrically with respect to the drive (3). Wandler nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß zwischen den beiden Membranen (7, 7') ein mit einem Ausgangsrohrstutzen (8) des Gehäuses (2) in Verbindung stehender Luftraum (9) (Volumen) eingeschlossen ist.Converter according to claim 1 or 2,
characterized in that between the two membranes (7, 7 ') an air space (9) (volume) connected to an outlet pipe socket (8) of the housing (2) is enclosed. Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Ankeranordnung (6) zwei getrennt bewegbare Anker (10, 10') umfaßt und jeder Anker (10, 10') mit einer der Membranen (7, 7') verbunden ist.Converter according to one of the preceding claims,
characterized in that the anchor arrangement (6) comprises two separately movable anchors (10, 10 ') and each anchor (10, 10') is connected to one of the membranes (7, 7 '). Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Anker (10, 10') zwischen dem Antriebsmagneten (5) und den Mittelbereichen der Membranen (7, 7') zumindest abschnittsweise parallel zu den Membranen (7, 7') verlaufen.Converter according to one of the preceding claims,
characterized in that the armatures (10, 10 ') between the drive magnet (5) and the central regions of the membranes (7, 7') run at least in sections parallel to the membranes (7, 7 '). Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die beiden Anker (10, 10') durch ein U-förmiges, federndes Element gebildet werden, wobei im U-Mittelbereich (12) die Spule (4) angeordnet ist und zwischen den U-Schenkeln (13) der Antriebsmagnet (5) befestigt ist.Converter according to one of the preceding claims,
characterized in that the two armatures (10, 10 ') are formed by a U-shaped, resilient element, the coil (4) being arranged in the U-central region (12) and the drive magnet between the U-legs (13) (5) is attached. Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß der Antriebsmagnet (5) mittig geteilt ist und zwei im wesentlichen gleichebig parallel nebeneinander verlaufende Ankerzungen (15, 15') in einem Mittelspalt (16) des Antriebsmagneten (5) angeordnet sind.Converter according to one of the preceding claims,
characterized in that the drive magnet (5) is divided in the center and two armature tongues (15, 15 ') which run essentially parallel to one another in parallel are arranged in a central gap (16) of the drive magnet (5). Wandler nach dem vorhergehenden Anspruch,
dadurch gekennzeichnet, daß jede Ankerzunge (15, 15') an ihrem freien Ende (17) über ein Verbindungselement (18) mit einer der beiden Membranen (7, 7') in Verbindung steht. Converter according to the preceding claim,
characterized in that each anchor tongue (15, 15 ') is connected at its free end (17) via a connecting element (18) to one of the two membranes (7, 7'). Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die beiden Ankerzungen (15, 15') über aus ihrer gemeinsamen Ebene ausgebogene Zwischenbereiche (20) in einen U-Endbereich (21) der Ankeranordnung (6) übergehen, der die Spule (4) durchsetzt.Converter according to one of the preceding claims,
characterized in that the two anchor tongues (15, 15 ') pass over intermediate regions (20) bent out of their common plane into a U-end region (21) of the anchor arrangement (6) which passes through the coil (4). Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Ankerzungen (15, 15'), die Zwischenbereiche (20) und der U-Endbereich (21) der Ankeranordnung (6) einen geschlossenen magnetischen Kreis bilden.Converter according to one of the preceding claims,
characterized in that the armature tongues (15, 15 '), the intermediate regions (20) and the U-end region (21) of the armature arrangement (6) form a closed magnetic circuit. Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Ankerzungen (15, 15') gleiche Ausmaße und gleiche Masse aufweisen.Converter according to one of the preceding claims,
characterized in that the anchor tongues (15, 15 ') have the same dimensions and the same mass. Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Membranen (7, 7') parallel zu Gehäuseseitenwandungen (25) verlaufen.Converter according to one of the preceding claims,
characterized in that the membranes (7, 7 ') run parallel to the housing side walls (25). Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die durch den Mittelspalt (16) getrennten Elemente des Antriebsmagneten (5) in einem Magnetjoch (27) angeordnet sind.Converter according to one of the preceding claims,
characterized in that the elements of the drive magnet (5) separated by the central gap (16) are arranged in a magnet yoke (27). Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Ankerzungen (15, 15') parallel zu den Membranen (7, 7') verlaufen. Converter according to one of the preceding claims,
characterized in that the anchor tongues (15, 15 ') run parallel to the membranes (7, 7'). Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die den Membranen (7, 7') zugewandten Seiten des Magnetjoches (27) zumindest abschnittsweise parallel zu den Membranen (7, 7') verlaufen.Converter according to one of the preceding claims,
characterized in that the sides of the magnetic yoke (27) facing the membranes (7, 7 ') run parallel to the membranes (7, 7') at least in sections. Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die parallel und gleichebig zueinander verlaufenden Bereiche der Ankerzungen (15, 15') durch einen schmalen Luftspalt (30) voneinander getrennt sind.Converter according to one of the preceding claims,
characterized in that the regions of the armature tongues (15, 15 ') which are parallel to and equal to one another are separated from one another by a narrow air gap (30). Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Membranen (7, 7') und der Antrieb (3) bezogen auf eine in der Ebene der Ankerzungen (15, 15') verlaufende Symmetrieebene spiegelsymmetrisch ausgebildet sind.Converter according to one of the preceding claims,
characterized in that the membranes (7, 7 ') and the drive (3) are mirror-symmetrical with respect to a plane of symmetry running in the plane of the anchor tongues (15, 15'). Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß von den freien Enden der Ankerzungen (15, 15') zu den Membranen (7, 7') verlaufende Verbindungselemente (18) bezogen auf den Luftspalt (30) zwischen den Ankerzungen (15, 15') seitlich versetzt verlaufen.Converter according to one of the preceding claims,
characterized in that connecting elements (18) extending from the free ends of the anchor tongues (15, 15 ') to the membranes (7, 7') are laterally offset with respect to the air gap (30) between the anchor tongues (15, 15 ').
EP00120789A 1999-11-15 2000-09-22 Electroacoustic transducer for hearing aids Expired - Lifetime EP1102517B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19954880A DE19954880C1 (en) 1999-11-15 1999-11-15 Electro-magnetic converter for sound production in hearing aid
DE19954880 1999-11-15

Publications (3)

Publication Number Publication Date
EP1102517A2 true EP1102517A2 (en) 2001-05-23
EP1102517A3 EP1102517A3 (en) 2008-03-05
EP1102517B1 EP1102517B1 (en) 2010-06-23

Family

ID=7929085

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00120789A Expired - Lifetime EP1102517B1 (en) 1999-11-15 2000-09-22 Electroacoustic transducer for hearing aids

Country Status (7)

Country Link
US (1) US6563933B1 (en)
EP (1) EP1102517B1 (en)
JP (1) JP4744685B2 (en)
CN (1) CN1163106C (en)
AT (1) ATE472232T1 (en)
DE (2) DE19954880C1 (en)
DK (1) DK1102517T3 (en)

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Also Published As

Publication number Publication date
DK1102517T3 (en) 2010-10-18
EP1102517B1 (en) 2010-06-23
DE19954880C1 (en) 2001-01-25
ATE472232T1 (en) 2010-07-15
CN1163106C (en) 2004-08-18
DE50015947D1 (en) 2010-08-05
CN1296373A (en) 2001-05-23
US6563933B1 (en) 2003-05-13
EP1102517A3 (en) 2008-03-05
JP4744685B2 (en) 2011-08-10
JP2001186597A (en) 2001-07-06

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