公开(公告)号：US10326342B2

公开(公告)日：2019-06-18

申请号：US15227511

申请日：2016-08-03

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masahiro Kino ,  Hiroaki Urano ,  Kenta Chimata

IPC: H02K15/00 ,  H02K15/03 ,  H02K1/27

Abstract: A manufacturing method for manufacturing a rotor such that a permanent magnet is inserted into a slot hole of a rotor core with a spacer includes: a step of placing, on the rotor core, a guide whose upper end has a curved guide surface such that the guide space continues with the slot hole in the up-down direction; a step of placing the spacer on the guide so that the spacer lies across the guide space; a step of inserting the permanent magnet into the guide space with the spacer being wound around the permanent magnet; and a step of inserting, into the slot hole, the permanent magnet around which the spacer is wound.

公开(公告)号：US20150340146A1

公开(公告)日：2015-11-26

申请号：US14712015

申请日：2015-05-14

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masayuki MATSUSHITA ,  Hirotaka Mori ,  Hiroaki Urano

IPC: H01F13/00

CPC classification number: H01F13/003 ,  H02K15/03

Abstract: A magnetizing device of a rotor core capable of suppressing deformation of electromagnetic steel sheets is provided. A magnetizing device of a rotor core according to one aspect of the present invention is a magnetizing device of a rotor core in which electromagnetic steel sheets are laminated. The magnetizing device includes: a magnetizing yoke to magnetize the rotor core; and holding means for holding peripheries of the electromagnetic steel sheets that are laminated from a direction in which the electromagnetic steel sheets are laminated. It is therefore possible to suppress deformation of the electromagnetic steel sheets.

Abstract translation: 提供一种能够抑制电磁钢板变形的转子铁芯的磁化装置。 根据本发明的一个方面的转子铁心的磁化装置是电磁钢板层叠的转子铁芯的磁化装置。 磁化装置包括：磁化轭，用于磁化转子芯; 以及保持装置，用于保持从层叠电磁钢板的方向层叠的电磁钢板的周边。 因此，能够抑制电磁钢板的变形。

公开(公告)号：US10020714B2

公开(公告)日：2018-07-10

申请号：US14852816

申请日：2015-09-14

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ichiro Okada ,  Hiroaki Urano ,  Katsuhiko Tatebe ,  Fumiki Tanahashi ,  Michitaka Hori

IPC: H02K15/03

CPC classification number: H02K15/03

Abstract: The invention relates to a method of manufacturing a rotor for performing a magnetizing process of magnetizing a plurality of magnet materials that are assembled in a rotor core. A magnetization device is used which has a coil group configured of a plurality of coils that are disposed side by side in a manner that winding directions of adjacent coils are opposite to each other, the coil group is configured of sub coils at both ends and two or more main coils between the sub coils, and all of the coils are connected in series. Further, in the magnetizing process, a partial magnetization of magnetizing the magnet material among the plurality of magnet materials to which magnetic flux interlinking with two adjacent main coils is applied is performed a plurality of times, so as to magnetize all the plurality of magnet materials.

公开(公告)号：US20240275223A1

公开(公告)日：2024-08-15

申请号：US18432561

申请日：2024-02-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kentaro YOSHIOKA ,  Yutaro Ikeda ,  Yuta Narisawa ,  Hideki Nakagawa ,  Shogo Kajimoto ,  Hiroaki Urano ,  Yukio Tsuchiya

IPC: H02K1/20

CPC classification number: H02K1/20

Abstract: A stator for an electric motor may include a back iron having a cylindrical shape and extending along an axial direction; a plurality of teeth provided on an inner circumferential surface of the back iron; and a stator coil provided on the plurality of teeth. The back iron may be provided with a coolant passage extending along the axial direction to a first end face of the back iron. The coolant passage may include a first section extending from the first end face and a second section adjacent to the first section. A dimension of the first section of the coolant passage in a radial direction of the stator may be different from a dimension of the second section of the coolant passage in the radial direction.

公开(公告)号：US11808736B2

公开(公告)日：2023-11-07

申请号：US17365743

申请日：2021-07-01

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroaki Urano ,  Akihide Shimmei

IPC: G01N29/12 ,  G01M7/08 ,  G01N29/46 ,  G01H13/00 ,  G01M7/02 ,  H02K3/34 ,  G01N29/04

CPC classification number: G01N29/12 ,  G01H13/00 ,  G01M7/02 ,  G01M7/08 ,  G01N29/045 ,  G01N29/46 ,  G01N2291/02827 ,  G01N2291/2693 ,  H02K3/345

Abstract: The fixing force evaluation method of the present embodiment includes the natural frequency measurement step of measuring the natural frequency of the stator in which the tooth portions and the stator coil are fixed by the insulating paper, and the fixing force evaluation step of evaluating that the fixing force of the insulating paper is larger, when the natural frequency of the stator measured in the natural frequency measurement step is equal to more than a predetermined determination frequency, compared to when the natural frequency is lower than the determination frequency. Thus, since the fixing force of the insulating paper is evaluated in the fixing force evaluation step based on the natural frequency of the stator measured in the natural frequency measurement step, the fixing force of the insulating paper can be evaluated by measuring the natural frequency of the stator without destroying the stator.

公开(公告)号：US10058960B2

公开(公告)日：2018-08-28

申请号：US15081274

申请日：2016-03-25

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroaki Urano ,  Koji Yamada ,  Masahiko Matsuda ,  Mitsuhiro Ide ,  Masayuki Ikemoto

IPC: B21D39/04 ,  B23P11/00

CPC classification number: B23P11/005

Abstract: A caulking method includes: determining a caulking depth which becomes equal to or larger than a necessary release torque that has been set in advance, determining a stroke amount of a push-in part which becomes equal to or larger than the caulking depth that has been determined; determining the stroke amount of a drive unit which becomes equal to or larger than the stroke amount of the push-in part that has been determined, and controlling the drive unit at a target control stroke amount that is equal to or larger than the stroke amount of the drive unit that has been determined but is smaller than the stroke amount of the drive unit at which the caulk part is damaged.