Global Patent Index - EP 1079664 A2

EP 1079664 A2 2001-02-28 - Electrodynamic driver

Title (en)

Electrodynamic driver

Title (de)

Elektrodynamischer Treiber

Title (fr)

Moteur électrodynamique

Publication

EP 1079664 A2 (DE)

Application

EP 00118512 A

Priority

DE 19940930 A

Abstract (en)

The driver has a moving coil (8) on a tubular coil holder (8a), with a magnet system (4,5,6) arranged concentric to the coil. An adaptor (9) is provided for attaching the coil holder to the diaphragm (12). An elastic element (2,7) is arranged between the diaphragm and the magnet system. A cavity (10,11,15,17) is formed between the diaphragm and the magnet system. An element (7) made of air permeable material is provided for equalising the pressure of the cavity. A pressure equalising channel (24,16) may be provided from the cavity to the outside air.

Abstract (de)

Es wird ein elektrodynamischer Treiber für eine Membran (12) vorgeschlagen, der eine auf einem rohrförmigen Spulenträger (8a) aufgebrachte Schwingspule (8), ein bezüglich der Schwingspule (8) konzentrisch angeordnetes, axial bewegliches Magnetsystem (4, 5, 6), einen Adapter (9) zum Befestigen des Spulenträgers (8a) an der Membran (12) und ein zwischen Membran (12) und Magnetsystem (4, 5, 6) angeordnetes elastisches Element (2, 7, 23b) aufweist. Dabei bildet sich mindestens ein Hohlraum (10, 11, 15, 17) zwischen Membran (12) und Magnetsystem (4, 5, 6), der mit Mitteln zum Druckausgleich (14, 16, 19, 20, 21, 24) des mindestens einen Hohlraums (10, 11, 15, 17) in Verbindung steht. <IMAGE>

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

H04R 9/06

IPC 8 full level (invention and additional information)

H04R 9/06 (2006.01); H04R 7/04 (2006.01)

CPC (invention and additional information)

H04R 9/066 (2013.01); H04R 7/045 (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

EP 1079664 A2 20010228; EP 1079664 A3 20070307; EP 1079664 B1 20111019; AT 530030 T 20111115; DE 19940930 A1 20010329

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