公开(公告)号：US20240055941A1

公开(公告)日：2024-02-15

申请号：US18254996

申请日：2021-12-06

Applicant: AICHI STEEL CORPORATION

Inventor： Aki WATARAI ,  Hiroaki HIRANO ,  Masahiro KAYANO ,  Tadashi FUJIMAKI ,  Choongsik KIM ,  Hayato WATANABE ,  Kazunori ITO ,  Kazuya ISHIDA

IPC: H02K7/116 ,  H02K7/00

CPC classification number: H02K7/116 ,  H02K7/006 ,  H02K21/02

Abstract: A geared motor includes a synchronous reluctance motor whose maximum rotational speed is 20000 rpm to 45000 rpm and in which rare earth bonded magnets are embedded in a rotor, and a speed reducer which reduces the rotational speed of the synchronous reluctance motor to a rotational speed in a usage range while increasing torque to a predetermined range. When a radius of the rotor is represented by R (cm) and a length of the rotor in an axial direction is represented by L (cm), the rotor has a size which satisfies conditions of 2 cm≤R≤6 cm and 2 cm≤L≤25 cm.