ROTOR FOR ROTARY ELECTRIC MACHINE, AND ROTARY ELECTRIC MACHINE WITH THE SAME

PROBLEM TO BE SOLVED: To provide a rotor for a rotary electric machine which improves a mechanical strength to a centrifugal force of the rotor by mitigating stress concentration that occurs in a magnet insertion hole of a rotor core, and a rotary electric machine with the same.SOLUTION: The rotor for the rotary electric machine comprises: a rotor core 252 including a plurality of magnet insertion holes 253 for each of magnetic poles; and permanent magnets 254 that are inserted into the magnet insertion holes. Non-magnetic parts 257 are formed at both ends of the magnet insertion hole in a circumferential direction and between the neighboring magnet insertion holes within one magnetic pole, a bridge part 260 is provided for mechanically connecting a rotor core part at an outer peripheral side of the magnet insertion hole and a rotor core part at an inner peripheral side. The bridge part includes: an outer peripheral side relief part 261a which is provided not to be in contact with an outer peripheral side corner of the permanent magnet; and an inner peripheral side relief part 261b which is provided not to be in contact with an inner peripheral side of the permanent magnet. The rotor for the rotary electric machine is configured in such a manner that a width W2 between the outer peripheral side relief parts is different from a width W3 between the inner peripheral side relief parts.SELECTED DRAWING: Figure 6 【課題】回転子鉄心の磁石挿入孔に発生する応力集中を緩和し、回転子の遠心力に対する機械的な強度を向上させた回転電機の回転子、及びこれを備えた回転電機を提供する。【解決手段】磁極毎に複数の磁石挿入孔２５３を備えた回転子鉄心２５２と、前記磁石挿入孔に挿入された永久磁石２５４とを備え、前記磁石挿入孔の周方向の両端部にそれぞれ非磁性部２５７が形成され、１磁極中の隣り合う前記磁石挿入孔の間に、前記磁石挿入孔の外周側の回転子鉄心部と内周側の回転子鉄心部とを機械的に接続するブリッジ部２６０が設けられ、前記ブリッジ部には、前記永久磁石の外周側角部と接触しないように設けられた外周側逃げ部２６１ａと、前記永久磁石の内周側と接触しないように設けられた内周側逃げ部２６１ｂとが設けられ、外周側逃げ部間の幅Ｗ２と内周側逃げ部間の幅Ｗ３とが異なるように回転電機の回転子を構成する。【選択図】図６