发明名称 |
CARBONACEOUS ACOUSTIC DIAPHRAGM AND SPEAKER UNIT |
摘要 |
PROBLEM TO BE SOLVED: To provide a carbonaceous acoustic diaphragm improved in frequency characteristics and internal loss, and a speaker unit including the same.SOLUTION: The carbonaceous acoustic diaphragm is formed into an elliptical dome shape by concentrically pasting elliptical ring carbonaceous plates 22to 22whose outer diameters and inner diameters are gradually reduced and elliptical carbonaceous plate 24 with a synthetic resin adhesive or a synthetic rubber adhesive. |
申请公布号 |
JP2016010037(A) |
申请公布日期 |
2016.01.18 |
申请号 |
JP20140130339 |
申请日期 |
2014.06.25 |
申请人 |
MITSUBISHI PENCIL CO LTD |
发明人 |
ONODERA YUTAKA;SATAKE ATSUNORI;SUZUKI TAKESHI;KOIZUMI HIROSHI |
分类号 |
H04R7/10;H04R7/02;H04R9/04 |
主分类号 |
H04R7/10 |
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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