Loudspeaker device

Details Loudspeaker device Loudspeaker device

2007-08-07

2010-10-12

Le, Huyen D (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S398000, C381S423000

Reexamination Certificate

active

07813522

ABSTRACT:
A loudspeaker device1includes an acoustic diaphragm5composed of a domed diaphragm11, an edge-like diaphragm13, and a junctional flat portion12which joins those domed and edge-like diaphragms, and a joined portion23where an end surface of a bobbin4of a voice coil or of a conductive 1-turn ring3is stuck and fixed to the junctional flat portion12or a reinforcement ring15; and the reinforcement ring15is stuck and fixed to the junctional flat portion12from above or from under, thereby increasing the mechanical strength of the junctional flat portion12of the acoustic diaphragm5. A loudspeaker device in which unnecessary vibrations are removed and also the quality of acoustic signals is excellent up to high range is provided.

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