发明授权
- 专利标题： Speaker
- 专利标题（中）： 扬声器
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申请号： US11447332申请日： 2006-06-06
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公开(公告)号： US07864976B2公开(公告)日： 2011-01-04
- 发明人: Hideo Kitazawa , Akinori Ushikoshi , Takamasa Kaneko , Kenji Yokoyama
- 申请人： Hideo Kitazawa , Akinori Ushikoshi , Takamasa Kaneko , Kenji Yokoyama
- 申请人地址： JP
- 专利权人： Nidec Pigeon Corporation
- 当前专利权人： Nidec Pigeon Corporation
- 当前专利权人地址： JP
- 代理机构： Cantor Colburn LLP
- 优先权： JP2005-167530 20050607
- 主分类号： H04R1/00
- IPC分类号： H04R1/00 ; G01R3/00
摘要：
A speaker may include a voice coil bobbin and a center pole. The voice coil bobbin may include a nonmetallic pipe body as a base of the voice coil bobbin, a first nonmagnetic and electric conductor film which is formed on an inner peripheral face of the pipe body, and a second electric conductor film which is formed on an outer peripheral face of the pipe body such that the first electric conductor film is covered by the second electric conductor film through the pipe body. An electrostatic capacity that is formed between the voice coil bobbin and the center pole is detected and outputted as an electric signal.
公开/授权文献
- US20060290481A1 Speaker 公开/授权日：2006-12-28