Electric motor and electric tool with the same

摘要

PROBLEM TO BE SOLVED: To efficiently cool the heat generation of a resin mold armature, particularly the heat generation of a coil, in a motor with the armature molded with resin and a power tool equipped with the same.;SOLUTION: To efficiently cool the heat generation of the resin mold armature 2a, particularly the heat generation of the coil 2e, an opening groove 2j is provided for every slot 2g on the outer peripheral surface of the mold resin filling layer 9a which is filled in the slot 2g of a core 2f and buries the coil 2e. The mold used for molding the mold resin filling layer 9a is constituted of four members which are separable in four sliding directions (in the radius direction of the core).;COPYRIGHT: (C)2007,JPO&INPIT