公开(公告)号：US20220026242A1

公开(公告)日：2022-01-27

申请号：US17324422

申请日：2021-05-19

Applicant: DENSO CORPORATION

Inventor： Yuriko KATO ,  Hiroshi YASOSHIMA

IPC: G01D5/14 ,  G01B7/30 ,  H02K1/28 ,  H02K1/27

Abstract: A rotor of a rotary electric machine includes a magnet that is a ring member arranged coaxially with a rotor core and assembled to an axial end part of the rotor core. The magnet is used for sensing a rotational angle of the rotor. The rotor core includes only one pair of core-side positioning portions which are arranged to be point-symmetric about a rotational axis. The magnet includes only one pair of magnet-side positioning portions which are arranged to be point-symmetric about the rotational axis. The magnet-side positioning portions are engaged with the core-side positioning portions, respectively, to position the magnet relative to the rotor core in a first direction, a second direction and a circumferential direction, and the magnet-side positioning portions are used as both a magnetization reference and an assembly reference.