发明名称 Electroacoustic transducer.
摘要 <p>A electroacoustic transducer converts an electric signal into sound by vibrating a diaphragm (18) magnetically in response to the electric signal input thereto. A movement restricting means (sound emitting cylinder 24; projections 34, 36, 38) for restricting the movement of the diaphragm (18) within an allowable movement range is provided on the inner wall of a resonant chamber (22) disposed at one side of the diaphragm (18). The diaphragm (18) is restricted in moving by the moving restricting means (sound emitting cylinder (24); projections (34, 36, 38) )at a magnetic piece (20) attached to the center of the diaphragm (18). &lt;IMAGE&gt;</p>
申请公布号 EP0598556(A1) 申请公布日期 1994.05.25
申请号 EP19930309005 申请日期 1993.11.11
申请人 STAR MICRONICS CO., LTD. 发明人 IMAHORI, YOSHIO, C/O STAR MICRONICS CO.,LTD.;FUSHIMI, ISAO, C/O STAR MICRONICS CO.,LTD.;NITO, KATSUTOSHI, C/O STAR MICRONICS CO.,LTD.
分类号 G04C21/02;G10K9/18;G10K9/20;H04R13/00;H04R17/10;(IPC1-7):H04R13/00 主分类号 G04C21/02
代理机构 代理人
主权项
地址