Global Patent Index - EP 2306753 A4

EP 2306753 A4 20121128 - SPEAKER DEVICE

Title (en)

SPEAKER DEVICE

Title (de)

LAUTSPRECHEREINRICHTUNG

Title (fr)

DISPOSITIF DE HAUT-PARLEUR

Publication

EP 2306753 A4 20121128 (EN)

Application

EP 08791918 A 20080730

Priority

JP 2008063687 W 20080730

Abstract (en)

[origin: EP2306753A1] The present invention may provide a small size high-quality sound speaker device having an elongated shaped diaphragm, magnetic circuit and voice coil with a simple configuration, a speaker device having a magnetic circuit forming a narrow-width magnetic gap, etc. The speaker device 1 according to the present invention includes the magnetic circuit 2 that has a yoke 21 having a lateral portion forming a magnetic gap only in the short-side direction, a magnet 22 and a plate 23, a diaphragm 33, a voice coil 31 having a linear portion 311 and a substantially semicircular-shaped curved portion 313, a frame 4 and a damper 35. The damper 35 has a frame joint 351, a voice coil joint 352 and a corrugation part 353 formed in a corrugated cross-sectional shape. The voice coil joint 352 has the groove 3521 in which the lower end of the curved portion of the voice 31 coil is joined, and the corrugated cross-sectional shape of the corrugation part 353 has the planar shape formed in a concentric arc shape.

IPC 8 full level

H04R 9/04 (2006.01); H04R 7/00 (2006.01); H04R 7/16 (2006.01); H04R 7/22 (2006.01); H04R 9/06 (2006.01)

CPC (source: EP)

H04R 7/16 (2013.01); H04R 7/22 (2013.01); H04R 9/06 (2013.01); H04R 2209/022 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 2306753 A1 20110406; EP 2306753 A4 20121128; JP 5002056 B2 20120815; JP WO2010013328 A1 20120105; WO 2010013328 A1 20100204

DOCDB simple family (application)

EP 08791918 A 20080730; JP 2008063687 W 20080730; JP 2010522561 A 20080730