Title:
ROTATING ELECTRICAL MACHINE
Document Type and Number:
WIPO Patent Application WO/2023/276680
Kind Code:
A1
Abstract:
A stator core (31) is provided, in a circumferential direction, with a plurality of teeth (401-404) each including a main body portion (42) which extends radially inward from a back yoke portion (41) forming an outer edge of an annulus, and a flange portion (43) which projects from the main body portion (42) toward both sides in the circumferential direction at the tip end of the main body portion (42). In the teeth (401-404), a plurality of recessed grooves (441, 442, 445-448) that are recessed toward the back yoke portion (41) side, from one end to the other end in the direction of the axis of rotation, are formed on a tip end surface of the main body portion (42). One or more magnetic flux reducing portions (45, 455-458) for reducing magnetic flux passing through inflow magnetic paths (46, 461-463), which are magnetic paths between adjacent recessed grooves, are configured from a non-magnetic material or a space and are provided in positions corresponding to the intervals between the recessed grooves that are adjacent to one another in the circumferential direction.
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Inventors:
TAKEUCHI SHUN (JP)
KIMURA AKIHIRO (JP)
SUGIURA AKIRA (JP)
KIMURA AKIHIRO (JP)
SUGIURA AKIRA (JP)
Application Number:
PCT/JP2022/024054
Publication Date:
January 05, 2023
Filing Date:
June 16, 2022
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02K21/16; H02K1/16
Foreign References:
| JP2003061272A | 2003-02-28 | |||
| JP2014068495A | 2014-04-17 | |||
| JPH1042531A | 1998-02-13 | |||
| JP2009189163A | 2009-08-20 | |||
| JP2001339921A | 2001-12-07 |
Attorney, Agent or Firm:
HATTORI & PARTNERS (JP)
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