ROTOR AND MANUFACTURING METHOD OF ROTOR FOR ROTARY ELECTRIC MACHINE

• Main Authors: HARA YUTAKA, ADACHI TAKEHIKO, MURAKAMI SATOSHI, TAKIGAWA NORIAKI, IKEDA MASAKI
• Format: Patent
• Language: English; Japanese
• Published: 01.10.2020
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

To promote an oil flow flowing through an inner peripheral surface of a rotor shaft.SOLUTION: The present invention discloses a rotor that includes a rotor shaft (34) which has a first hollow part (34A) and in which a rotor core (32) is fixed to a radial direction outer side. In the first hollow part of the rotor shaft, an oil is supplied from between a first position (P1) and a second position (P2) which are separated in an axial direction. In an inner peripheral surface of the rotor shaft, an inner diameter at a third position (P3) between the first position and the second position in the axial direction is smaller than that at the first position and the second position.SELECTED DRAWING: Figure 1 【課題】ロータシャフトの内周面を伝う油の流れを促進する。【解決手段】第１中空部（３４Ａ）を有し、ロータコア（３２）が径方向外側に固定されるロータシャフト（３４）を備え、ロータシャフトの第１中空部には、軸方向に離れた第１位置（Ｐ１）と第２位置（Ｐ２）の間から油が供給され、ロータシャフトの内周面は、軸方向の第１位置と第２位置の間の第３位置（Ｐ３）での内径が、第１位置及び第２位置での内径よりも小さい、ロータが開示される。【選択図】図１