Title:
ROTOR MANUFACTURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/042639
Kind Code:
A1
Abstract:
This manufacturing device for a rotor (20) targets the rotor (20) having a permanent magnet (23) provided by being embedded inside a rotor core (22) and forming a folded-back shape protruded inside in the radial direction. The rotor manufacturing device includes a magnetizing device (30, 50) for magnetizing the embedded permanent magnet from the outside of the rotor. The magnetizing device comprises a yoke portion (32, 34, 42, 52, 62) disposed at least outside the rotor in the axial direction and forming a magnetic path for supplying a magnetizing flux to the permanent magnet. The yoke portion includes at least one of a dust core (A12, A14), a steel sheet laminated body (A11), and a slit (32c, 34e, 42e), said dust core (A12, A14) having a function of suppressing eddy current that can be generated by the magnetizing flux.
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Inventors:
HARADA MASARU (JP)
HIRAMATSU RITSURO (JP)
UCHIDA TOSHIHIRO (JP)
HIRAMATSU RITSURO (JP)
UCHIDA TOSHIHIRO (JP)
Application Number:
PCT/JP2022/032133
Publication Date:
March 23, 2023
Filing Date:
August 26, 2022
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02K15/03; H01F13/00; H02K1/274
Foreign References:
| JP2017060240A | 2017-03-23 | |||
| JP2012205397A | 2012-10-22 | |||
| JP2007035786A | 2007-02-08 |
Attorney, Agent or Firm:
ONDA Makoto et al. (JP)
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