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1. (WO2018021104) MOTOR ROTOR, SUPERCHARGER, AND METHOD OF MANUFACTURING MOTOR ROTOR

Pub. No.:    WO/2018/021104    International Application No.:    PCT/JP2017/026062
Publication Date: Fri Feb 02 00:59:59 CET 2018 International Filing Date: Thu Jul 20 01:59:59 CEST 2017
IPC: H02K 1/27
H02K 15/03
Applicants: IHI CORPORATION
株式会社IHI
Inventors: OZASA Takuya
小篠 拓也
Title: MOTOR ROTOR, SUPERCHARGER, AND METHOD OF MANUFACTURING MOTOR ROTOR
Abstract:
This motor rotor has a configuration provided with: a tubular inner sleeve; an annular magnet fitted to the outside of the inner sleeve in the radial direction of the inner sleeve; and a ring member which is disposed to the outside of the magnet in the axial direction of the inner sleeve and is fitted to the outside of the inner sleeve in the radial direction of the inner sleeve. The linear expansion coefficient of the inner sleeve is higher than the linear expansion coefficient of the magnet. The ring member is fitted to the inner sleeve by shrink fitting, and a gap is provided between the ring member and the magnet in the axial direction of the inner sleeve.