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US 2018/0324526 A1Published application
Loudspeaker diaphragm, loudspeaker, and production method for loudspeaker diaphragm
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsTETSUSHI ITANO, SEIJI TAKAGI, KENJI ENDOU, KAZUAKI NISHIMURA, MAKOTO KUROZAWA
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Abstract
A loudspeaker diaphragm includes resin and hollow glass member particles contained in the resin. Further, a loudspeaker includes the above-described loudspeaker diaphragm, a magnetic circuit, a frame connected to the magnetic circuit, and a voice coil body having one end connected to the loudspeaker diaphragm and the other end disposed inside a magnetic gap in the magnetic circuit.
Claims9
A loudspeaker diaphragm comprising:
- resin;
- and
- hollow glass member particles contained in the resin.
A production method for a loudspeaker diaphragm, the method comprising:
- kneading resin containing hollow glass member particles;
- injecting the resin into a cavity of a mold that is in a first state;
- and
- bringing the mold into a second state in which a volume of the cavity is smaller than a volume of the cavity in the first state, after the injection of the resin.
1 more element
Dependencies are inferred from the claim text.