| 摘要 |
A rotary electric machine is provided that prevents an outer ring of a bearing from rotating due to reductions in coupling strength between a bearing housing portion and the outer ring of the bearing due to differences in thermal expansion between the two that result from heat generated during driving of the rotary electric machine, enabling damage to the bearing housing portion to be prevented, and consequently enabling cost reductions because it is not necessary to use special bearings, and also preventing a resin spacer from dislodging from the bearing housing portion. A spacer in a rotary electric machine according to the present invention complements by thermal expansion a gap between a bearing housing portion and an outer ring of an outboard bearing that arises due to differences in thermal expansion between the bearing housing portion and the outer ring of the outboard bearing that result from heat generated during driving, and a flat portion is disposed on an inner circumference of the spacer at at least one position around a circumference, the flat portion being formed so that press an outer circumferential surface of the outer ring of the bearing constantly. |
