Invention Application
- Patent Title: Electroacoustic transducer
- Patent Title (中): 电声换能器
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Application No.: US09941738Application Date: 2001-08-30
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Publication No.: US20020025052A1Publication Date: 2002-02-28
- Inventor: Youichi Gotoh , Yoshio Imahori , Yoshiharu Oishi , Kazuyasu Ono
- Applicant: STAR MICRONICS CO., LTD.
- Applicant Address: null
- Assignee: STAR MICRONICS CO., LTD.
- Current Assignee: STAR MICRONICS CO., LTD.
- Current Assignee Address: null
- Priority: JPP.2000-261696 20000830
- Main IPC: H04R025/00
- IPC: H04R025/00

Abstract:
There is provided an electroacoustic transducer 1 comprising a base 24 made of magnetic material, a magnetic core 22 made of magnetic material and provided erectly on the base 24, a diaphragm 20 made of magnetic material and supported with a gap between the diaphragm and a forward end of the magnetic core, a magnet 25 constituting a magnetic circuit together with the base 24, the magnetic core 22 and the diaphragm 20 so as to provide a magnetostatic field, a coil 23 disposed around the magnetic core for applying an oscillating magnetic field to the magnetic circuit, a coil bobbin 30 for holding the coil 23, a housing 10 for receiving the above-mentioned members, a filler 19 applied to an external surface side of the base 24, and lead terminals 41 and 42 for supplying an electric current. The lead terminals 41 and 42 have protrusion portions 41a and 42a, respectively, protruding into an internal surface side of the base 24 in the axial direction of the coil. A coil wire 23a is wound around the protrusion portions 41a and 42a so as to be connected to the lead terminals 41 and 42.
Public/Granted literature
- US06678388B2 Electroacoustic transducer Public/Granted day:2004-01-13
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