Holding member, rotor of a rotating electrical machine comprising the same, and a rotating electrical machine comprising the rotor

A holding member applied to a rotating electrical machine, the rotating electrical machine comprising:

• a stator including a stator core;
• a rotor supported by way of a rotating shaft and corresponding to the stator;
• a plurality of magnets arranged on an outer periphery of the rotor;
• and a holding member that compressively holds the magnets inwards in a radial direction from an outer periphery side of the magnets,
• wherein the holding member comprises:
• a main section that forms a substantially cylindrical body and is composed primarily of a fiber bundle wound on, as circling around, a peripheral surface of the main section per se;
• and a terminally processed section provided at an end of the main section, the terminally processed section including a region that is terminally processed for preventing the fiber bundle from being untied from at least any one of a start point and an end point of winding the fiber bundle, and
• wherein a length of the main section in an axial direction is longer than a length of the stator core in the axial direction;
• and the terminally processed section is arranged so as to be located outside of an end of the stator core in the axial direction, wherein
• an external diameter of the terminally processed section, formed on an end portion extended from the main section, is larger than an external diameter of the main section, and wherein
• an external diameter of an opposite side end portion, oppositely extended from the main section in the axial direction, is smaller than an inner diameter of the stator core, wherein the opposite side end portion is formed without the terminally processed section.