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1. 发明授权

US08055010B2 Magnetic structure for an ironless electrodynamic-loudspeaker motor, motors and loudspeakers 有权
标题翻译：无铁电动扬声器电机，电机和扬声器的磁性结构
公开(公告)号：US08055010B2
公开(公告)日：2011-11-08
申请号：US12300883
申请日：2008-09-18
申请人： Guy Lemarquand , Benoît Merit
发明人： Guy Lemarquand , Benoît Merit
IPC分类号： H04R9/06
CPC分类号： H04R9/025 , H04R9/06 , H04R2209/022
摘要： A magnetic structure generating a magnetic field for an ironless motor of an electrodynamic loudspeaker having a mobile coil, wherein the magnetic structure generates a magnetic field in a gap in which the coil is arranged. The magnetic structure includes of a stack of three magnets corresponding to one intermediate magnet and two top and bottom covering magnets, the magnets forming a straight gap border and being located side by side, the intermediate magnet having a radial magnetic polarization, the covering magnets having identical magnetic polarizations and remanent magnetizations. The covering magnets have a radial or axial magnetic polarization. When magnetic polarization of the covering magnets is radial, remanent magnetization of each covering magnet is higher than remanent magnetization of the intermediate magnet, and when magnetic polarization of the covering magnets is axial, remanent magnetization of each covering magnet is lower than remanent magnetization of the intermediate magnet. Motors are provided.
摘要翻译：一种产生用于具有移动线圈的电动扬声器的无铁马达的磁场的磁性结构，其中所述磁结构在布置所述线圈的间隙中产生磁场。该磁性结构包括对应于一个中间磁体和两个顶部和底部覆盖磁体的三个磁体堆叠，所述磁体形成直的间隙边界并且并排定位，所述中间磁体具有径向磁极化，所述覆盖磁体具有相同的磁极化和残余磁化。覆盖磁体具有径向或轴向磁极化。当覆盖磁体的磁极化是径向的时，每个覆盖磁体的剩余磁化强度高于中间磁体的剩余磁化强度，当覆盖磁体的磁极化是轴向的时，每个覆盖磁体的剩余磁化强度低于剩余磁化强度中间磁铁。提供电机。

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