公开(公告)号：US20250141288A1

公开(公告)日：2025-05-01

申请号：US19010357

申请日：2025-01-06

Applicant: DENSO CORPORATION

Inventor： Tomohiro AOYAMA ,  Takahiro NAKAYAMA

IPC: H02K1/276 ,  H02K21/16 ,  H02K29/03

Abstract: A rotor includes a plurality of magnetic poles each of which has one slit formed in a rotor core. Each of the magnetic poles is divided into twelve equal areas between first and second circumferential ends thereof. Counting the twelve areas in order of proximity to the first circumferential end, the fourth to ninth areas are respectively defined as a first area, a second area, a third area, a fourth area, a fifth area and a sixth area. The slits of the magnetic poles include a first slit and a second slit. The first slit is arranged in the third area or the sixth area. The second slit is arranged in one of the first area, the second area, the third area, the fourth area, the fifth area and the sixth area.

公开(公告)号：US20240275242A1

公开(公告)日：2024-08-15

申请号：US18634108

申请日：2024-04-12

Applicant: DENSO CORPORATION

Inventor： Takahiro NAKAYAMA ,  Ritsuro HIRAMATSU

IPC: H02K11/215 ,  H02K1/276 ,  H02K21/16

CPC classification number: H02K11/215 ,  H02K1/2773 ,  H02K21/16 ,  H02K2213/03

Abstract: A rotating electric machine includes: a rotor having a permanent magnet embedded in a magnet-receiving hole of a rotor core; a stator that applies a rotating magnetic field to the rotor; and a magnetic sensor that detects rotation information of the rotor. The permanent magnet has a folded shape that is convex inward in a radial direction of the rotor. The magnetic sensor is arranged to face the permanent magnet and configured to be capable of detecting magnetic flux from the permanent magnet.

公开(公告)号：US20230299628A1

公开(公告)日：2023-09-21

申请号：US18201471

申请日：2023-05-24

Applicant: DENSO CORPORATION

Inventor： Takahiro NAKAYAMA ,  Ritsuro HIRAMATSU ,  Toshihiro UCHIDA ,  Masahito SAKAI

IPC: H02K1/276 ,  H02K21/16

CPC classification number: H02K1/2773 ,  H02K21/16

Abstract: A rotor includes: a rotor core including a plurality of core sheets that are laminated together and having a plurality of magnet-receiving holes formed in a folded shape; and a plurality of permanent magnets embedded respectively in the magnet-receiving holes. Each of the core sheets has a plurality of first through-holes and a plurality of second through-holes. Each of the first through-holes has a connection portion formed at an intermediate position in the folded shape of a corresponding one of the magnet-receiving holes to connect inner peripheral edges of the first through-hole that face each other in a width direction of the first through-hole. Each of the second through-holes has no connection portion. The core sheets are identical in configuration to each other. The core sheets are laminated so that each of the magnet-receiving holes is constituted of a mixture of the first and second through-holes of the core sheets.