Title:
ROTOR MANUFACTURING APPARATUS
Document Type and Number:
Japanese Patent JP2023043637
Kind Code:
A
Abstract:
To provide a rotor manufacturing apparatus capable of providing sufficient magnetization on the entire permanent magnet buried in a rotor core and suppressing generation of heat at the apparatus when magnetized.SOLUTION: A rotor to be magnetized is provided in a state where a permanent magnet having a projected folded shape inside in a radial direction is buried in a rotor core. A magnetization device 30 comprises, in addition to an outer diameter side main yoke 32 of a main magnetization part 30a constituting a magnetic path for supplying a magnetization magnetic flux to the permanent magnet, auxiliary yokes 34 and 42 of auxiliary magnetization parts 30b and 30c arranged on both sides of the rotor in an axial direction. The magnetization magnetic flux can be supplied to a bent part or the like of the permanent magnet which the magnetization magnetic flux is difficult to reach by inserting insertion projections 34d and 42d of the yokes 34 and 42 and executing magnetization. The yoke 32 is composed of a steel plate laminate A11, a slit 32c and the yokes 34 and 42 are composed of powder magnetic cores A12 and A14 on a tip surface 32a1 of an opposite projection 32a, and thus eddy current generated at each magnetic path by the magnetization magnetic flux can be suppressed.SELECTED DRAWING: Figure 7
Inventors:
HARADA MASARU
HIRAMATSU RITSURO
UCHIDA TOMOHIRO
HIRAMATSU RITSURO
UCHIDA TOMOHIRO
Application Number:
JP2021151358A
Publication Date:
March 29, 2023
Filing Date:
September 16, 2021
Export Citation:
Assignee:
DENSO CORP
International Classes:
H02K15/03; H01F13/00; H02K1/274
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda
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