发明名称 |
Multifunction speaker |
摘要 |
A multifunction speaker has a frame made of an insulation material and having a cylindrical portion, a pair of supporting springs secured to the frame and to a magnetic circuit for supporting the magnetic circuit. The magnetic circuit comprises a pole piece having a center pole and a flange on which an annular magnet is mounted. The flange of the pole piece has a pair of positioning projections projected from a periphery of the flange for positioning the magnet.
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申请公布号 |
US7454031(B2) |
申请公布日期 |
2008.11.18 |
申请号 |
US20050079103 |
申请日期 |
2005.03.15 |
申请人 |
CITIZEN ELECTRONICS CO., LTD. |
发明人 |
KAJIWARA HIROO;MIYAMOTO KAZUMI |
分类号 |
H04R9/02;H04R25/00;B06B1/04;H04M1/03;H04R1/00;H04R1/02;H04R9/00;H04R9/06;H04R13/00;H04R31/00 |
主分类号 |
H04R9/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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