PERMANENT MAGNET FIXING STRUCTURE

WIPO Patent Application WO/2021/093102

A1

A permanent magnet fixing structure. A permanent magnet is mounted at an inner surface or an outer surface of a rotor core by two adjacent magnetic isolating pressing bars, the magnetic isolating pressing bars and the permanent magnet having a clearance fit. The magnetic isolating pressing bars comprise a fixed section fitted in the rotor iron core and a pressing section that presses against the permanent magnet tightly. The fixed section is inserted into an interior of the rotor core, and the two are fixed by a securing member disposed at a top end of the fixed section after assembly. A cross section of the pressing section has a swallowtail shape. A side surface of the permanent magnet abutting the pressing section has a shape matching that of the pressing section. The pressing section in the structure ensures that the permanent magnet does not fall off the inner surface or the outer surface of the rotor core. In addition, the securing member fixes the fixed section to the rotor core. In this way, the permanent magnet fixing structure has a simple process, and is reliable during use.

ZHU LIXIANG (CN)
WANG DONGMEI (CN)
LI GUANG (CN)
YAN CAISONG (CN)
LIU YONG (CN)
CUI SILIU (CN)
WANG GUOHUI (CN)
CAO QING (CN)

PCT/CN2019/127889

May 20, 2021

December 24, 2019

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CRRC ZHUZHOU ELECTRIC CO LTD (CN)

H02K1/27

CN104518589A	2015-04-15
CN104518589A	2015-04-15
CN209282962U	2019-08-20
CN209282962U	2019-08-20
CN109742913A	2019-05-10
CN202713000U	2013-01-30
CN206894383U	2018-01-16
US20150222154A1	2015-08-06

UNITALEN ATTORNEYS AT LAW (CN)

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