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US 9,521,490 B2Granted
Speaker diaphragm and production method for speaker diaphragm
AssigneesPioneer Corporation, Tohoku Pioneer Corporation, Mogami Denki Kabushiki Kaisha
InventorsKazuharu Kawata, Yoshihiro Sato, Hideki Takahashi
Life of this patent
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Abstract
A diaphragm can be obtained which exhibits large internal loss and Young's modulus and which can be produced efficiently. A speaker diaphragm 1 comprises at least one layer 1A formed by molding a component member configured by a fiber and a tangled fiber body of a synthetic fiber. The synthetic fiber is a polyvinyl alcohol fiber having boron.
Claims8
A speaker diaphragm comprising a first layer and a second layer, wherein
- said first layer has mica and is configured by a first component member, which is a tangled fiber body,
- said tangled fiber body is configured by a natural fiber and a synthetic fiber different from said natural fiber, and
- said synthetic fiber is a polyvinyl alcohol fiber having boron,
- weight of the synthetic fiber is lower than weight of the natural fiber, and
- said second layer being configured by a second component member, which is a tangled fiber body.
2 more elements
Dependencies are inferred from the claim text.