Global Patent Index - EP 1102517 A2

EP 1102517 A2 2001-05-23 - Electroacoustic transducer for hearing aids

Title (en)

Electroacoustic transducer for hearing aids

Title (de)

Elektromagnetischer Wandler für Hörgeräte

Title (fr)

Transducteur électro-acoustique pour prothèses auditives

Publication

EP 1102517 A2 (DE)

Application

EP 00120789 A

Priority

DE 19954880 A

Abstract (en)

[origin: DE19954880C1] The electromagnetic converters (1) includes an electromagnetic drive (3) arranged in a casing (2), which comprises at least one coil (4), a drive magnet (5), and an armature arrangement (6). A membrane arrangement is fastened in the casing, which is fastened mechanically to the armature arrangement (6), to convert movements of the armature arrangement into sound signals. The membrane arrangement includes two separate, identically formed membranes (7, 7') which are arranged on opposite sides of the drive, and which are driven in such way, that a total mechanical pulse caused through the movement of the driven or driving parts is minimised. Both membranes are preferably arranged symmetrically with respect to the drive.

Abstract (de)

Ein elektromagnetischer Wandler (1) zur Schallerzeugung in elektronischen Hörgeräten weist ein Gehäuse (2) und einen im Gehäuse angeordneten elektromagnetischen Antrieb mit einer Spule (4), einem Antriebsmagneten (5) und einer Ankeranordnung (6) auf. Ferner ist im Gehäuse eine Membranenanordnung vorgesehen, die mechanisch an die Ankeranordnung (6) angekoppelt ist. Zur Reduzierung von Vibrationen durch die antreibenden und angetriebenen Teile des Wandlers sowie zur Verbesserung des Wirkungsgrades umfaßt die Membranenanordnung zwei gesonderte Membranen (7, 7'), 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.

IPC 1-7 (main, further and additional classification)

H04R 25/00

IPC 8 full level (invention and additional information)

H04R 9/00 (2006.01); H04R 11/02 (2006.01); H04R 25/00 (2006.01)

CPC (invention and additional information)

H04R 25/65 (2013.01); H04R 11/02 (2013.01); H04R 25/604 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19954880 C1 20010125; AT 472232 T 20100715; CN 1163106 C 20040818; CN 1296373 A 20010523; DE 50015947 D1 20100805; DK 1102517 T3 20101018; EP 1102517 A2 20010523; EP 1102517 A3 20080305; EP 1102517 B1 20100623; JP 2001186597 A 20010706; JP 4744685 B2 20110810; US 6563933 B1 20030513

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