Rotor and rotating electric machine having the same

摘要

A rotor has a rotor shaft, a rotor boss, a first magnetic pole, a second magnetic pole, an end cover, and a radially-outer cover. The first and the second magnetic poles are placed to a radially outer periphery of the rotor boss to be alternately arranged in a circumferential direction. A space is defined between the end cover and the first magnetic pole or the second magnetic pole, which is made of a magnet. The radially-outer cover has a first end portion and a second end portion, at least one of the first end portion and the second end portion being defined as a particular end portion. The particular end portion of the radially-outer cover is inwardly crimped onto the end cover in a radial direction.

主权项

1. A rotor comprising:
a rotor shaft; a rotor boss fixed to the rotor shaft; a first magnetic pole and a second magnetic pole placed to a radially outer periphery of the rotor boss to be alternately arranged in a circumferential direction; an end cover arranged to at least one end of the rotor boss in an axial direction; and a radially-outer cover having a tubular shape, wherein the radially-outer cover is fitted to the first magnetic pole, the second magnetic pole and the end cover such that a space is defined between the end cover and the first magnetic pole or the second magnetic pole, which is made of a magnet, the radially-outer cover has a first end portion and a second end portion in the axial direction, at least one of the first end portion and the second end portion being defined as a particular end portion with which the end cover is fitted, and the particular end portion of the radially-outer cover is inwardly bent in a radial direction and is crimped onto the end cover.