Title:
同期電動機の回転子
Document Type and Number:
Japanese Patent JP7053392
Kind Code:
B2
Abstract:
A rotor of a synchronous motor includes a rotor core that includes magnet insertion holes and a plurality of slits formed on an outer peripheral side of the magnet insertion holes, and permanent magnets embedded in the magnet insertion holes. Magnetic-path forming slits are formed at intervals in a direction along a side of the permanent magnet. Magnetic paths are formed between the magnetic-path forming slits and at portions on the outside of the magnetic-path forming slits on the outermost side. An adjusting slit is formed between a predetermined magnetic-path forming slit and the permanent magnet such that a difference between quantities of magnetic flux passing through the magnetic paths adjacent to each other for widths in a direction intersecting an orientation of a magnetic pole of the permanent magnet is small.
Inventors:
Tatsuya Shizu
Takanori Yokochi
Takanori Yokochi
Application Number:
JP2018132900A
Publication Date:
April 12, 2022
Filing Date:
July 13, 2018
Export Citation:
Assignee:
Okuma Corporation
International Classes:
H02K1/276
Domestic Patent References:
| JP2017108626A |
Foreign References:
| WO2016056065A1 | ||||
| CN107591911A | ||||
| WO2015045999A1 | ||||
| US20050035677 |
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office