Rotary electric machine having reinforcing ring on armature

    公开(公告)号:US06566780B2

    公开(公告)日:2003-05-20

    申请号:US09987731

    申请日:2001-11-15

    IPC分类号: H02K334

    CPC分类号: H02K3/51

    摘要: In an armature, a slot insulation paper provided in a slot of an armature core protrudes from an insulation plate in the axial direction. A part of the slot insulation paper that faces an outer peripheral surface of a coil end is cut out to expose the outer peripheral surface of the coil end. A reinforcing ring is fitted at the axial outside of the armature core to surround the exposed outer peripheral surface of the coil end. Accordingly, the reinforcing ring is disposed close to the armature core in the axial direction. Therefore, a straight portion of the coil end is shortened by an amount of cut of the slot insulation paper, and as a result, the axial length of the armature is shortened.