Rotor for electric rotating machine and method for manufacturing the same

摘要

A rotor for an electric rotating machine includes a core body member formed, first and second end plates provided at respective side faces of the core body member, and a fixing member inserted into through holes provided at the core body member and the end plates. The end plates include positioning portions at an outer or inner circumferential surface, wherein when the fixing member is engaged with the end plates, the positioning portion is engageable with positioning receive portions corresponding to the positioning portions and positioning at radially outer or inner portion of the end plate. When one of the end plates is placed facing the side face of the core body member in a reversed state, the end plate and the core body member are not assembled each other by positional relationship between the positioning portions, the positioning receive portions and the through holes.

主权项

1. A rotor for an electric rotating machine, comprising:
a core body member formed by stacking a plurality of core plates in an axial direction along a rotational axis, and including a plurality of through holes; first and second end plates annually formed and provided at respective side faces of the core body member, and including a plurality of through holes; and a fixing member inserted into each of the plurality of through holes provided at the core body member and the first and second end plates, and engaged with each of the first and second end plates at opposite ends of the fixing member; a plurality of positioning portions provided at an outer circumferential surface or inner circumferential surface of each of the first and second end plates, wherein when the fixing member is engaged with the first and second end plates, the positioning portions are engaged with positioning receive portions corresponding to the positioning portion and positioning at radially outer portion or radially inner portion of the first and second end plates; wherein when one of the first and second end plates is placed facing the side face of the core body member in a reversed state, the first and second end plates and the core body member are not assembled with each other because;
a relative position between a through hole of the core body member and a through hole of the first and second end plates is shifted in a circumferential direction; wherein in a state where one of the first and second end plates is placed facing the side face of the core body member in a correct state, one of the positioning portions of the first end plate and one of the positioning portions of the second end plate are located at opposite sides relative to the rotational axis; wherein the positioning portions include two positioning portions and are formed at the outer circumference surface or the inner circumference surface of the first and second end plates, and an angle defined by a line perpendicularly drawn from one positioning portion to the rotational axis and a line perpendicularly drawn from the through hole positioned closest to the one positioning portion to the rotational axis is different from an angle defined by a line perpendicularly drawn from the other positioning portion to the rotational axis and a line perpendicularly drawn from the through hole positioned closest to the other positioning portion to the rotational axis; and wherein the positioning portions correspond to cutout portions.