公开(公告)号：US4661729A

公开(公告)日：1987-04-28

申请号：US827125

申请日：1986-02-03

申请人： Jeffrey L. Hames ,  Charles M. Lacey ,  Ronald R. Neuman ,  John R. Reidenbach

发明人： Jeffrey L. Hames ,  Charles M. Lacey ,  Ronald R. Neuman ,  John R. Reidenbach

IPC分类号： G11B21/02 ,  G11B5/55 ,  H02K41/035 ,  H02K41/02

CPC分类号： H02K41/0356 ,  G11B5/5521

摘要： A voice coil motor for a moving storage media actuator has a permanent magnet assembly wherein a radially polarized magnet is formed as sectors, with like sectors of the outer housing which forms a portion of the pole piece assembly. These sectors are then mounted on the remainder of the pole piece assembly for the magnetic actuator to form a cylindrical magnet and cylindrical outer pole piece. The sectors require no further attachment or adhesive in addition to the magnetic field and provides substantially zero clearance contact between magnet and pole piece, to afford a continuous magnetic path interrupted only by the working gap through which the voice coil travels.

摘要翻译： 用于移动存储介质致动器的音圈电动机具有永磁体组件，其中径向极化磁体形成为扇区，外壳的类似扇区形成极片组件的一部分。 然后将这些扇区安装在用于磁致动器的极片组件的其余部分上以形成圆柱形磁体和圆柱形外极片。 除了磁场之外，这些扇区不需要进一步的附接或粘合，并且在磁体和极片之间提供基本上为零的间隙接触，以提供仅由音圈通过的工作间隙中断的连续磁路。