EP 1694092 A1 20060823 - TWEETER
Title (en)
TWEETER
Title (de)
HOCHTÖNER
Title (fr)
HAUT-PARLEUR D'AIGUS
Publication
Application
Priority
- JP 2004016771 W 20041111
- JP 2003383533 A 20031113
Abstract (en)
A high-tone loudspeaker according to the invention includes a semi-dome type metal diaphragm obtained by integrally forming a dome portion, a cone portion, and an edge portion. In this diaphragm, a ratio of a difference between a bottom inclination angle of the dome portion and a bottom inclination angle of the cone portion to a larger bottom inclination angle between the bottom inclination angle of the dome portion and the bottom inclination angle of the cone portion is set at 15% or less, and a ratio of a difference between a surface area of the dome portion and a surface area of the cone portion to a larger area between the surface area of the dome portion and the surface area of the cone portion is set at 15% or less. A voice coil fitting portion is provided on a lower side of a bottom of the dome portion.
IPC 8 full level
CPC (source: EP)
H04R 7/02 (2013.01); H04R 7/12 (2013.01); H04R 2307/027 (2013.01)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 1694092 A1 20060823; EP 1694092 A4 20091223; CN 1879447 A 20061213; CN 1879447 B 20101013; WO 2005048651 A1 20050526
DOCDB simple family (application)
EP 04818500 A 20041111; CN 200480033456 A 20041111; JP 2004016771 W 20041111