发明授权
- 专利标题： Magnetic circuit
- 专利标题（中）： 磁路
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申请号： US12801491申请日： 2010-06-11
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公开(公告)号： US08355524B2公开(公告)日： 2013-01-15
- 发明人: Shigeo Saitou , Mitsutoshi Tanaka , Kouji Mitake
- 申请人： Shigeo Saitou , Mitsutoshi Tanaka , Kouji Mitake
- 申请人地址： JP Tokyo
- 专利权人： TDK Corporation
- 当前专利权人： TDK Corporation
- 当前专利权人地址： JP Tokyo
- 代理商 Manabu Kanesaka
- 主分类号： H04R1/02
- IPC分类号： H04R1/02 ; H04R9/06 ; H04R11/02
摘要：
A magnetic circuit includes a cylindrical yoke member having an inner circumferential surface and a collar formed at one end thereof and turned back substantially at right angles, and a plurality of permanent magnet segments of a partially circular arc in cross section. Each of the permanent magnets has an outer surface attracted magnetically to the inner circumferential surface of the cylindrical yoke member, and one end face attracted magnetically to the collar of the cylindrical yoke member. The magnetic circuit is applied to an actuator or a speaker.
公开/授权文献
- US20100254565A1 Magnetic circuit 公开/授权日：2010-10-07
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