Stator-core fixing structure for rotating electric machine

摘要

The objective is to prevent the flange of a ring member for holding the stator core from enlarging the diameter of a rotating electric machine and to eliminate a screwing space and a pedestal portion in the housing case so as to suppress the weight of the rotating electric machine from increasing; one end of the ring member for holding the stator core protrudes from the outer circumference of the stator core toward the rotation axle and the ring member is fixed to the cover or the housing case at the protruding portion.

主权项

1. A stator-core fixing structure for a rotating electric machine, comprising:
a rotor mounted on a rotation axle; a stator that has a stator core and a stator coil wound around the stator core and is disposed in such a way as to face the rotor; a cylindrical ring member that is mounted on the outer circumference of the stator core and holds the stator core; a cylindrical housing case that surrounds the outer circumference of the ring member; and a disk-shaped cover that seals an opening portion of the housing case, wherein one end of the ring member protrudes from the outer circumference of the stator core toward the rotation axle and the ring member is fixed to the cover or the housing case at the protruding portion, wherein a first fixing portion, of the ring member, at which the ring member is fixed to the cover protrudes radially outward, and wherein a second fixing portion, of the housing case, at which the housing case is fixed to the cover protrudes radially inward in such a way that the phase thereof is shifted from the first fixing portion in the rotation direction.