ROTOR, ROTARY ELECTRIC DEVICE, DRIVING DEVICE, AND MOBILE BODY

• Main Author: SUGAYA ATSUSHI
• Format: Patent
• Language: English; Japanese
• Published: 07.10.2022
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

To provide a technique attaining reduction of torque ripple and improvement of manufacture efficiency for a rotor having a skew structure.SOLUTION: A first rotor core 11 and a second rotor core, which are aligned in an axial direction and arranged with magnet poles thereof positioned deviated from each other in a circumferential direction, comprise: a pair of first magnets 13; and a pair of first magnet storage holes 14 in which the first magnets are stored. A flux barrier of the first rotor core includes a first flux barrier 31 and a second flux barrier 32 which are overlapped with the first magnet storage holes of the second rotor core in the axial direction. An imaginary line connecting an intermediate position of the pair of first magnets in the circumferential direction with a central axis is defined to be a first axis J1, and an imaginary line being adjacent with the first axis in the circumferential direction and magnetically orthogonal with the first axis and passing the central axis is defined to be a second axis J2. The first flux barrier is disposed between the first axis and the first magnet in the circumferential direction, and the second flux barrier is disposed on the second axis.SELECTED DRAWING: Figure 5 【課題】スキュー構造を有するロータにおいて、トルクリップルの低減と、製造効率の向上とを図る技術を提供する。【解決手段】軸方向に配列され、磁極の位置を周方向に互いにずらして配置される第１ロータコア１１と第２ロータコアは、一対の第１マグネット１３と、第１マグネットを収容する第１マグネット収容孔１４と、を有する。第１ロータコアのフラックスバリアは、第２ロータコアの第１マグネット収容孔と軸方向に重なる第１フラックスバリア３１と第２フラックスバリア３２とを有する。一対の第１マグネットの周方向の中間位置と中心軸とを結ぶ仮想線を第１軸Ｊ１とし、第１軸と周方向に隣り合い、第１軸と磁気的に直交するとともに中心軸を通る仮想線を第２軸Ｊ２とする。第１フラックスバリアは、第１軸と第１マグネットとの周方向間に配置され、第２フラックスバリアは、第２軸上に配置される。【選択図】図５