Diaphragm for speaker, frame for speaker, dust cap for speaker, speaker and apparatus using them, and method for manufacturing component for speaker
AssigneePanasonic Corporation
InventorsYoshimichi Kajihara, Shinya Mizone, Kazuyoshi Mimura, Takashi Sabato, Kazuaki Nishimura
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Abstract
A speaker diaphragm is configured by a compound mixed with resin and bamboo fiber. The diaphragm satisfying the advantage of the bamboo fiber of high sound quality and a large degree of freedom in the setting of the characteristic value of the diaphragm and the advantage of the diaphragm made of a resin with improved humidity resistance reliability and strength, excellent external appearance, and enhanced productivity and dimension stability is obtained.
Claims69
A speaker diaphragm comprising:
- a resin;
- and
- a cellulose fiber,
- wherein the cellulose fiber is a bamboo fiber.
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-6. (canceled)
-10. (canceled)
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-22. (canceled)
A speaker frame comprising:
- a resin;
- and
- a cellulose fiber,
- wherein the cellulose fiber is a bamboo fiber.
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-28. (canceled)
-32. (canceled)
-37. (canceled)
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-43. (canceled)
A speaker dust cap comprising:
- a resin;
- and
- a cellulose fiber,
- wherein the cellulose fiber is bamboo fiber.
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-50. (canceled)
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A speaker comprising:
- a magnetic circuit;
- a frame coupled to the magnetic circuit;
- a diaphragm, containing a resin and a bamboo fiber, coupled to an outer peripheral portion of the frame;
- and
- a voice coil coupled to the diaphragm and arranged in a magnetic gap formed by the magnetic circuit.
A speaker comprising:
- a magnetic circuit;
- a frame, containing a resin and a bamboo fiber, coupled to the magnetic
- a diaphragm coupled to an outer peripheral portion of the frame;
- and
- a voice coil coupled to the diaphragm and arranged in a magnetic gap formed by the magnetic circuit.
A speaker comprising:
- a magnetic circuit;
- a frame coupled to the magnetic circuit;
- a diaphragm coupled to an outer peripheral portion of the frame;
- a voice coil coupled to the diaphragm and arranged in a magnetic gap formed by the magnetic circuit;
- and
- a dust cap, containing a resin and a bamboo fiber, coupled to a front surface of the diaphragm.
-65. (canceled)
A method for manufacturing a speaker component comprising:
- a miniaturization step of partially miniaturizing a fiber to a microfibrillated state to generate a microfibrillated fiber containing moisture;
- a compounding step of substituting the moisture contained in the microfibrillated fiber and a granulated resin to generate a compound containing the microfibrillated fiber and the resin;
- and
- a molding step of injection molding the compound.
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Dependencies are inferred from the claim text.