发明授权
- 专利标题: Electroacoustic transducer and method of fabricating the same
- 专利标题(中): 电声换能器及其制造方法
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申请号: US319714申请日: 1994-10-07
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公开(公告)号: US5581623A公开(公告)日: 1996-12-03
- 发明人: Fumihito Ishimura , Yoshio Imahori , Takahiro Sone , Yasuharu Tsuchiya
- 申请人: Fumihito Ishimura , Yoshio Imahori , Takahiro Sone , Yasuharu Tsuchiya
- 申请人地址: JPX Shizuoka-ken
- 专利权人: Star Micronics Co., Ltd.
- 当前专利权人: Star Micronics Co., Ltd.
- 当前专利权人地址: JPX Shizuoka-ken
- 优先权: JPX5-288615 19931025
- 主分类号: G10K9/12
- IPC分类号: G10K9/12 ; G10K9/13 ; G10K9/18 ; G10K9/22 ; H04R1/06 ; H04R13/00 ; H04R31/00 ; H04R25/00 ; H04Q1/30
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 surrounding 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.
公开/授权文献
- US4924308A Bandwidth reduction system for television signals 公开/授权日:1990-05-08
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