Title:
PERMANENT MAGNET FOR ROTARY ELECTRIC MACHINE AND MANUFACTURING METHOD THEREOF, AND ROTARY ELECTRIC MACHINE AND MANUFACTURING METHOD THEREOF
Document Type and Number:
Japanese Patent JP2019054724
Kind Code:
A
Abstract:
To provide: a permanent magnet for a rotary electric machine, which can keep a necessary and sufficient surface magnetic flux density even in the event of occurrence of demagnetization, and which enables the prevention of the reduction in rotary electric machine's torque and power generation quantity; a method for manufacturing such a permanent magnet of a rotary electric machine; a rotary electric machine incorporating such a permanent magnet for a rotary electric machine; and a method for manufacturing the rotary electric machine.SOLUTION: A permanent magnet 1 for a rotary electric machine is manufactured by the steps of: pulverizing a magnet raw material into magnet powder; mixing the magnet powder with a binder, thereby producing a compound 17; then, molding the compound 17 thus produced in a sheet form, thereby preparing a green sheet 19; thereafter applying a magnetic field to the green sheet 19 thus molded, thereby performing magnetic field orientation of the green sheet 19; shaping, by deformation, the green sheet 19 thus oriented in a product form; and then, baking the product form. In the permanent magnet 1, axes of easy magnetization are oriented so that they converge into an area easier for demagnetization in comparison to other areas.SELECTED DRAWING: Figure 3
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| JP2000014059 | SMALL-SIZED MOTOR |
| WO/2020/090365 | ROTATING ELECTRIC MACHINE |
Inventors:
FUJIWARA MAKOTO
KUME KATSUYA
HOSHINO TOSHINOBU
YAMAGUCHI MIHO
MORIMOTO MASAKAZU
OKUNO TOSHIAKI
IMOTO EIICHI
EBE HIROSHI
OMURE TOMOHIRO
OZEKI IZUMI
FUJIKAWA KENICHI
KATO YUKI
YAMAMOTO TAKASHI
SAITO SHOICHIRO
KUME KATSUYA
HOSHINO TOSHINOBU
YAMAGUCHI MIHO
MORIMOTO MASAKAZU
OKUNO TOSHIAKI
IMOTO EIICHI
EBE HIROSHI
OMURE TOMOHIRO
OZEKI IZUMI
FUJIKAWA KENICHI
KATO YUKI
YAMAMOTO TAKASHI
SAITO SHOICHIRO
Application Number:
JP2018209635A
Publication Date:
April 04, 2019
Filing Date:
November 07, 2018
Export Citation:
Assignee:
NITTO DENKO CORP
International Classes:
H02K1/27; H01F1/057; H01F7/02; H01F41/02; H02K15/03
Domestic Patent References:
| JP2013243886A | 2013-12-05 | |||
| JP2009142144A | 2009-06-25 | |||
| JP2009254143A | 2009-10-29 |
Foreign References:
| WO2013069076A1 | 2013-05-16 |
Attorney, Agent or Firm:
Patent business corporation NEXT