US 12,395,024 B2
Rotor
Yasunari Furuta, Kariya (JP)
Assigned to AISIN CORPORATION, Kariya (JP)
Appl. No. 18/267,549
Filed by AISIN CORPORATION, Aichi (JP)
PCT Filed Feb. 25, 2022, PCT No. PCT/JP2022/007850
§ 371(c)(1), (2) Date Jun. 15, 2023,
PCT Pub. No. WO2022/209480, PCT Pub. Date Oct. 6, 2022.
Claims priority of application No. 2021-058434 (JP), filed on Mar. 30, 2021.
Prior Publication US 2024/0039354 A1, Feb. 1, 2024
Int. Cl. H02K 1/32 (2006.01); H02K 1/276 (2022.01); H02K 7/108 (2006.01); H02K 9/19 (2006.01)
CPC H02K 1/32 (2013.01) [H02K 1/2766 (2013.01); H02K 7/108 (2013.01); H02K 9/19 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A rotor comprising:
a rotor core;
a first end plate being provided on an end surface on one side in an axial direction in the rotor core;
a second end plate being provided on an end surface on an opposite side in the axial direction in the rotor core; and
a rotor hub including a cylindrical portion that is provided in such a way as to be adjacent to the rotor core, on a radial-direction inner side of the rotor core, and fixes the rotor core, wherein
the rotor core includes a plurality of oil flow paths that are provided in such a way as to extend along the axial direction and through which first cooling oil for cooling the rotor core flows,
an end portion on one side in the axial direction in the cylindrical portion of the rotor hub includes: a plurality of crimped portions that are crimped with the first end plate; and a plurality of pairs of notch portions arranged in such a way as to be adjacent to the crimped portions in a peripheral direction of the rotor core, on respective both sides of the plurality of crimped portions,
the first end plate includes a first opening portion that is provided at a first position corresponding to a position where the crimped portion of the cylindrical portion is not arranged, in the peripheral direction, is connected to a first oil flow path among the plurality of oil flow paths, and is constituted of a hole or a notch being provided in vicinity of an inner peripheral edge of the first end plate, and
the second end plate includes a second opening portion that is provided at a second position corresponding to a position where the crimped portion of the cylindrical portion is arranged, in the peripheral direction, is connected to a second oil flow path other than the first oil flow path among the plurality of oil flow paths, and is constituted of a hole or a notch being provided in vicinity of an inner peripheral edge of the second end plate.