发明授权
- 专利标题： Electric acoustic converter and electronic device using the same
- 专利标题（中）： 电声转换器和使用其的电子装置
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申请号： US10578790申请日： 2005-04-27
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公开(公告)号： US07362877B2公开(公告)日： 2008-04-22
- 发明人: Kazuki Honda , Koji Sano , Kazutaka Kubo , Kazuya Yamasaki , Hiroshi Yano , Takeshi Shimokawatoko , Takanori Fukuyama , Shigeru Tomoeda , Mitsutaka Enomoto , Masahide Sumiyama
- 申请人： Kazuki Honda , Koji Sano , Kazutaka Kubo , Kazuya Yamasaki , Hiroshi Yano , Takeshi Shimokawatoko , Takanori Fukuyama , Shigeru Tomoeda , Mitsutaka Enomoto , Masahide Sumiyama
- 申请人地址： JP Osaka
- 专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址： JP Osaka
- 代理机构： RatnerPrestia
- 优先权： JP2004-133117 20040428
- 国际申请： PCT/JP2005/008448 WO 20050427
- 国际公布： WO2005/107317 WO 20051110
- 主分类号： H04R25/00
- IPC分类号： H04R25/00
摘要：
An electro-acoustic transducer wherein a stopper of a terminal is composed of an elastic body having an impulsive-force resistance and an excellent resilience. The stopper is mounted on the yoke or lower plate of magnetic circuit, which is made of a metallic material having an impulsive-force resistance. In this way, the stopper can restrict the terminal within the reversibility limit value of the spring force of the metallic material, and hence can enhance the reliability.