发明名称 |
Speaker diaphragms, manufacturing methods of the same, and dynamic speakers |
摘要 |
On one surface of a piece of wooden sheet, a cloth or paper is adhered to make an adhered sheet. An approximately V-shaped notch is provided on the adhered sheet, the adhered sheet is wetted to be softened, and a lubricant which acts to keep water is impregnated thereinto. Edge portions of the notch are overlapped, and the adhered sheet is tentatively molded in an approximately horn shape by a first hot press molding. The adhered sheet is then dried, impregnated with thermosetting resin, and half-dried. The adhered sheet is subject to a second hot press molding. A moisture-proof agent is applied on the adhered sheet, a center hole for a voice coil and periphery are removed to make a speaker diaphragm having a predetermined dimension and shape.
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申请公布号 |
US7677355(B2) |
申请公布日期 |
2010.03.16 |
申请号 |
US20080292327 |
申请日期 |
2008.11.17 |
申请人 |
VICTOR COMPANY OF JAPAN, LIMITED |
发明人 |
IMAMURA SATOSHI;HIRANO TAKESHI;OGATA TOMOAKI;KUWAHATA TOSHIKATSU |
分类号 |
H04R7/06;H04R7/12;H04R9/06;H04R31/00 |
主分类号 |
H04R7/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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