Electro-acoustic transducer

An electro-acoustic transducer includes a housing (202) enclosing an electro-acoustic transducer device (201) and having an opening (202a) through which the diaphragm side of the transducer device (201) is exposed to the outside. A ring (209) is provided at and permanently fixed to the outer surface...

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Bibliographische Detailangaben
Hauptverfasser:	YOSHIYUKI KAMON, MAKOTO YAMAGISHI, MASAHIKO ISO
Format:	Patent
Sprache:	eng
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS
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Beschreibung
Zusammenfassung:	An electro-acoustic transducer includes a housing (202) enclosing an electro-acoustic transducer device (201) and having an opening (202a) through which the diaphragm side of the transducer device (201) is exposed to the outside. A ring (209) is provided at and permanently fixed to the outer surface of the perimeter of the opening (202a). An outer part (211) of the ring (209) is much softer and more pliable than an inner member (210) and the elastic ring portion (211) has inner peripheral side edge portions and supporting portions which are engaged with peripheral edge surfaces and ribs of the base ring portion (210).