Title:
ROTOR AND MOTOR
Document Type and Number:
WIPO Patent Application WO/2020/137294
Kind Code:
A1
Abstract:
The motor according to one embodiment comprises: a rotor core that rotates around a center axis; and a rotor magnet that is fixed to the rotor core. The rotor core has: an inner core part that has a circumferential-direction ring shape; an outer core part that is on the radial-direction outside of the inner core part and has the rotor magnet fixed thereto; and a plurality of connection parts that are between the inner core part and the outer core part in the radial direction and link the inner core part and the outer core part. The plurality of connection parts have: a curved first connection part that, seen along the axial direction, curves toward one side in the circumferential direction from the inner core part toward the outer core part; and a curved second connection part that, seen along the axial direction, curves toward the other side in the circumferential direction from the inner core part toward the outer core part. The first connection part and the second connection part have sections that are at the same location in the axial direction.
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Inventors:
BANDO TAKAAKI (JP)
MAKINO YUSUKE (JP)
MAKINO YUSUKE (JP)
Application Number:
PCT/JP2019/045895
Publication Date:
July 02, 2020
Filing Date:
November 25, 2019
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
H02K21/16; H02K1/22; H02K1/27
Foreign References:
| JP2014158332A | 2014-08-28 | |||
| JP2004194419A | 2004-07-08 | |||
| JP2015061466A | 2015-03-30 | |||
| US20120217831A1 | 2012-08-30 |
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