Title:
ROTOR, MOTOR, AND ROTOR MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/037794
Kind Code:
A1
Abstract:
Provided are a rotor holding permanent magnets without using a special member and a motor provided with the rotor. The rotor comprises a rotor core (20), a plurality of permanent magnets (30), and a rotating shaft. The rotor core (20) has a plurality of magnet placement holes (110). The permanent magnets (30) are placed inside the magnet placement holes (110) to which the respective permanent magnets (30) correspond. The rotating shaft is fixed to the rotor core (20) and has a shaft center serving as a rotating center. The rotor core (20) has first inner surfaces (121), second inner surfaces (122), and projections (120). The first inner surfaces (121) and the second inner surfaces (122) are positioned inside first magnet placement holes (110) and face each other. The projections (120) are formed by the plastic deformation of the rotor core (20) and project from the second inner surfaces (122) to the first inner surface (121) side. First permanent magnets (30) placed in the first magnet placement holes (110) are held in the first magnet placement holes (110) by the projections (120).
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Inventors:
FUKUDA SHUGO
YONEDA HIROSHI
YONEDA HIROSHI
Application Number:
PCT/JP2022/029594
Publication Date:
March 16, 2023
Filing Date:
August 02, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02K1/276; H02K15/03
Domestic Patent References:
| WO2017163383A1 | 2017-09-28 |
Foreign References:
| JP2013110827A | 2013-06-06 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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