Title:
MANUFACTURING METHOD OF ROTOR FOR ELECTRIC MOTOR
Document Type and Number:
Japanese Patent JP2022026283
Kind Code:
A
Abstract:
To provide a manufacturing method of a rotor for an electric motor that can reduce damage to a seat when a magnet is inserted into a through hole.SOLUTION: There is provided a manufacturing method of a rotor for an electric motor including a rotor core 2c, a magnet 6, and a seat 8. The rotor core includes a through hole 2h extending along an axial direction. The magnet is inserted into the through hole. The sheet is arranged between an inner surface 2i of the through hole and the magnet. The method includes a sheet insertion step of passing the sheet through the through hole, and a magnet insertion step of inserting the magnet into the through hole while pulling the sheet from both sides in the axial direction to apply tension to the sheet and pressing the sheet against the inner surface. Due to the application of tension to the sheet, the sheet is stretched in the axial direction of the rotor core, and the surface of the sheet becomes smooth. The magnet slides smoothly on the surface of the sheet and is inserted into the through hole.SELECTED DRAWING: Figure 7
Inventors:
TAKESHIMA KENTA
KITA SHUZABURO
KITA SHUZABURO
Application Number:
JP2020129671A
Publication Date:
February 10, 2022
Filing Date:
July 30, 2020
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H02K15/02; H02K1/27
Domestic Patent References:
| JPH09163649A | 1997-06-20 | |||
| JP2006311782A | 2006-11-09 | |||
| JP2007151362A | 2007-06-14 | |||
| JP2017038459A | 2017-02-16 | |||
| JP2014222964A | 2014-11-27 |
Foreign References:
| WO2014167953A1 | 2014-10-16 |
Attorney, Agent or Firm:
Kaiyu International Patent Office
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