Electro-acoustic transducer and electronic apparatus using it

Details Electro-acoustic transducer and electronic apparatus using it Electro-acoustic transducer and electronic apparatus using it

2005-04-26

2009-12-08

Ni, Suhan (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Mounting or support feature of housed loudspeaker

C381S396000

Reexamination Certificate

active

07630508

ABSTRACT:
An electro-acoustic transducer has a magnetic circuit, a frame, a diaphragm, a voice coil, a terminal, and a stopper. The frame is joined to a magnetic circuit. The diaphragm is joined to a circumferential edge of the frame. The voice coil is joined to the diaphragm and is partially provided at a magnetic gap of the magnetic circuit. The terminal is composed of a metal plate having spring property and conductivity, is partially fixed to the frame, and is electrically connected to the voice coil. The stopper is provided at an outer periphery of the metal plate of the terminal and extends from a main section of the terminal to the frame. The stopper restricts a bending range of the metal plate constituting the terminal to a level equal to or lower than a reversibility limit value of a metal material constituting the terminal.

REFERENCES:
patent: 4420706 (1983-12-01), Siebold et al.
patent: 4738625 (1988-04-01), Burton et al.
patent: 6553126 (2003-04-01), Han et al.
patent: 6671384 (2003-12-01), Klein
patent: 6674872 (2004-01-01), Fujinami et al.
patent: 6807282 (2004-10-01), Kaneda et al.
patent: 6860766 (2005-03-01), Aujla et al.
patent: 7181040 (2007-02-01), Ohta
patent: 7200241 (2007-04-01), Fukuyama et al.
patent: 7415121 (2008-08-01), Mogelin et al.
patent: 2001/0009585 (2001-07-01), Masuda et al.
patent: 2001/0028303 (2001-10-01), Kuwabara et al.
patent: 2001/0053233 (2001-12-01), Fukazawa et al.
patent: 2004/0037441 (2004-02-01), Konishi et al.
patent: 2005/0152536 (2005-07-01), Caveney
patent: 2006/0177092 (2006-08-01), Ohta
patent: 2007/0080412 (2007-04-01), Honda et al.
patent: 1 120 991 (2001-08-01), None
patent: 1 146 773 (2001-10-01), None
patent: 8-317029 (1996-11-01), None
patent: 2002-203628 (2002-07-01), None
patent: 2003-37890 (2003-02-01), None
patent: 2003-69250 (2003-03-01), None
patent: WO 00/59263 (2000-10-01), None
patent: WO 2005/107317 (2005-11-01), None
patent: WO 2005/115047 (2005-12-01), None
patent: WO 2006/003821 (2006-01-01), None
Supplementary European Search Report for Application No. EP 05 73 8748, Jan. 7, 2009, Panasonic Corporation.
International Search Report for PCT/JP2005/008382, dated Aug. 16, 2005.

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