Search International and National Patent Collections

1. (WO2017154832) PERMANENT MAGNET-TYPE ROTARY ELECTRIC MACHINE AND MAGNET FIXING METHOD THEREFOR

Pub. No.:    WO/2017/154832    International Application No.:    PCT/JP2017/008764
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Tue Mar 07 00:59:59 CET 2017
IPC: H02K 1/27
H02K 15/03
Applicants: MEIDENSHA CORPORATION
株式会社 明電舎
Inventors: TOYOKAWA, Kei
豊川 慶
OHNISHI, Takayuki
大西 貴之
Title: PERMANENT MAGNET-TYPE ROTARY ELECTRIC MACHINE AND MAGNET FIXING METHOD THEREFOR
Abstract:
The invention comprises: a stator (11) that is fixed to a fixing frame; a rotor (12) in which a plurality of magnets (30) surrounding the periphery of the stator (11) from the outer side in the radial direction are fixed on an inner circumferential surface (22c); and a magnet holder (40) that positions each magnet (30) in the axial direction and the circumferential direction. The magnet holder (40) includes: a housing frame part (41), the outer circumferential surface (41a) of which opposes and contacts the inner circumferential surface (22c) of the rotor (12); a housing part (42) that houses the magnet (30); and a guide groove (45) that guides the magnet (30) along the axial direction toward the inside of the housing part (42), the guide groove being recessed toward the outer side in the radial direction such that the bottom surface (45a) is located more inward, in the radial direction, than the inner circumferential surface (22c) of the rotor (12) and more outward, in the radial direction, than the inner circumferential surface (41b) of the housing frame part (41).