ROTARY MOTOR

PROBLEM TO BE SOLVED: To provide a rotating motor in which a rotation stopper for a stator core against a frame is constructed, without distorting the stator core and a temperature change at a portion where the rotation stopper is constructed is suppressed to reduce core losses and torque fluctuations. SOLUTION: The outer peripheral surface of the stator core has a projection 9 of an approximate triangular shape having an apex in the radial direction, while the inner peripheral surface of the frame has a recess 10 that matches the projection 9. The outer peripheral surface of the projection 9 and the inner peripheral surface of the recess 10 each have two subsurfaces, and one set of subsurfaces out of two sets of subsurfaces of the outer peripheral surface of the projection and the inner peripheral surface of the recess is fixed, with a bolt 11 screwed from the side face of the frame. A gap is formed on the other set of subsurfaces, and a plate 12 made of a material, softer than that of the frame, is disposed on the set of subsurfaces fixed with the bolt and provides a ventilation passage between the projection and the recess. COPYRIGHT: (C)2010,JPO&INPIT