发明名称 Electroacoustic transducer and method of fabricating the same
摘要 The present invention provides an electroacoustic transducer and a method of fabricating the same, employing a lead frame to integrally form a plurality of component parts, thus reducing the number of individual component parts, and improving assembly efficiency. The electroacoustic transducer comprises a base, a yoke fixed to the base, a core, a coil wound around the core, magnet surrounding the coil, a support ring surround the magnet, a vibrating plate supported on the support ring, lead terminals fixed to the base, and a case having a sound emitting cylinder and joined to the base so as to cover those components. A gap is formed between the core and the diaphragm. The diaphragm, the gap, the core, the yoke and the magnet form a closed magnetic path. The coil drives the diaphragm for vibration when energized. The yoke and the lead terminals are integrally formed of a common metal material such as the lead frame. The core may be integrally formed with the yoke of the lead frame.
申请公布号 USRE36327(E) 申请公布日期 1999.10.05
申请号 US19980035342 申请日期 1998.03.05
申请人 STAR MICRONICS CO., LTD. 发明人 ISHIMURA, FUMIHITO;IMAHORI, YOSHIO;SONE, TAKAHIRO;TSUCHIYA, YASUHARU
分类号 G10K9/12;G10K9/13;G10K9/18;G10K9/22;H04R1/06;H04R13/00;H04R31/00;(IPC1-7):H04R25/00;H04Q1/30 主分类号 G10K9/12
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