公开(公告)号：US06191516B1

公开(公告)日：2001-02-20

申请号：US09403934

申请日：1999-12-14

申请人： Peter Froehlich ,  Joerg Brandes ,  Hans Kobschaetzky

发明人： Peter Froehlich ,  Joerg Brandes ,  Hans Kobschaetzky

IPC分类号： H02K2112

CPC分类号： H02K1/17 ,  H02K23/04

摘要： An electric motor, including at least two permanent magnet segments disposed around a motor longitudinal axis, in which each permanent magnet segment has end faces extending in the direction of the motor longitudinal axis and is encompassed by two independent yoke ring segments that have a gap between them parallel to a symmetry plane extending through the motor longitudinal axis and the center of the permanent magnet segments in order to reduce the armature transverse field. In addition to the reduction of the armature transverse field, a weight reduction of the electric motor is also achieved. To this end, in a first region close to the end faces of the permanent magnet segments, the one-piece magnetically conductive yoke is provided with a larger cross section than in a second region close to the symmetry plane extending through the center of the permanent magnet segments. The construction is particularly suited for small electric motors, in particular d.c. motors that are excited by permanent magnets.

摘要翻译： 一种电动机，包括设置在电动机纵向轴线周围的至少两个永久磁铁段，其中每个永久磁铁段具有在电动机纵向轴线方向上延伸的端面，并且被两个独立的轭环段包围， 它们平行于延伸穿过马达纵向轴线和永磁体段的中心的对称平面，以减小电枢横向场。 除了减小电枢横向磁场之外，还实现了电动机的重量减轻。 为此，在靠近永磁体段的端面的第一区域中，一体式导磁轭具有比在延伸穿过永久磁铁的中心的对称平面附近的第二区域更大的横截面 磁铁片段。 该结构特别适用于小型电动机，特别适用于直流电动机。 由永磁体激发的电机。