Patent ID: 9093880
Filing Date: 2015-07-28
Classification: H02K

Abstract:
1. A permanent magnet motor comprising: a stator core formed of a soft magnetic material and including a core portion and a plurality of chip portions each comprised of dust core portion; a stator having a coil wound on the stator core; a rotor having a permanent magnet, wherein the core portion includes a number of steel plates stacked and secured to one another in a direction of a rotation axis, the steel plates being individually insulated from each other, the core portion including an annular path portion and a plurality of salient pole portions; the chip portions are attached to distal ends of the salient pole portions respectively, each chip portion having at least one axial end axially protruding from an axial end of each salient pole portion and one or a plurality of radially extending protrusions; the salient pole portions are magnetically routed by the path portion and extend radially from the path portion; the salient pole portions have distal end sides formed with recesses capable of accommodating the protrusions, respectively; and the protrusions of the chip portions are accommodated in the recesses of the salient pole portions, whereby the chip portions are attached to the core portion.