公开(公告)号：US20240113605A1

公开(公告)日：2024-04-04

申请号：US18372190

申请日：2023-09-25

Applicant: HONDA MOTOR CO., LTD.

Inventor： Yuki Abe ,  Yuki Hasegawa ,  Masatoshi Nagashima

IPC: H02K15/03 ,  B23P11/02 ,  H02K1/28

CPC classification number: H02K15/03 ,  B23P11/022 ,  H02K1/28

Abstract: A method for manufacturing a rotor including a rotor body, and a sleeve surrounding an outer peripheral portion of the rotor body and applying a pressurizing force toward an inner periphery to the rotor body, includes: preparing the sleeve having a tubular shape and having an inner diameter smaller than an outer diameter of the rotor body; expanding an inner diameter of the sleeve to be larger than an outer diameter of the rotor body, by applying a liquid pressure to an inner diameter portion of the sleeve; inserting the rotor body into the inner diameter portion of the sleeve while applying the liquid pressure; and fixing the sleeve to the rotor body by removing the liquid pressure and contracting the sleeve.

公开(公告)号：US11949299B2

公开(公告)日：2024-04-02

申请号：US18307662

申请日：2023-04-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masayuki Akaishi

IPC: H02K15/03 ,  H02K15/12

CPC classification number: H02K15/03 ,  H02K15/12 ,  Y10T29/49012 ,  Y10T29/53143

Abstract: A rotor manufacturing method comprises an arranging step for arranging a rotor core, which is formed by stacking electromagnetic steel plates, to direct the stacked electromagnetic steel plates toward a vertical direction, a guide inserting step for inserting a rod-like guide into a magnet insertion hole formed to extend in the stacked direction of the rotor core after the arranging step, a sheet inserting step for inserting a plurality of sheets from above the rotor core into the magnet insertion hole along different side surfaces of the guide after the guide inserting step, a guide pull-out step for pulling out the guide from the magnet insertion hole after the sheet inserting step, and a magnet inserting step for inserting a permanent magnet between the plurality of sheets within the magnet insertion hole after the guide pull-out step.

公开(公告)号：US11942838B2

公开(公告)日：2024-03-26

申请号：US17443375

申请日：2021-07-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kenta Takeshima

IPC: H02K15/03 ,  H02K1/276 ,  H02K1/28

CPC classification number: H02K15/03 ,  H02K1/276 ,  H02K1/28

Abstract: A method of assembling a rotor including a cylindrical rotor core and a permanent magnet that is held in a hole portion provided in the rotor core such that a longitudinal direction of the permanent magnet is parallel to an axis of the rotor core. The method includes: a load measuring step of measuring a load applied to the permanent magnet or/and the rotor core when the permanent magnet is brought into contact with the rotor core; and a moving step of moving the permanent magnet or/and the rotor core so as to change a position of the permanent magnet relative to the rotor core, depending on data relating to the load measured at the load measuring step, such that a positional deviation between the permanent magnet and the hole portion is reduced. Also disclosed is a control device for a rotor assembly apparatus.

公开(公告)号：US11942837B2

公开(公告)日：2024-03-26

申请号：US17158593

申请日：2021-01-26

Applicant: Regal Beloit America, Inc.

Inventor： Subhash Marutirao Brahmavar

IPC: H02K15/03 ,  H01F13/00 ,  H02K1/16 ,  H02K1/2713 ,  H02K5/00 ,  H02K7/00

CPC classification number: H02K15/03 ,  H01F13/003 ,  H02K1/16 ,  H02K1/2713 ,  H02K7/003 ,  H02K5/00

Abstract: In one aspect, axial flux rotor, for use in an axial flux motor prepared by a process, provided. The process includes the steps of stamping a plurality of laminations and overlying one of the external planar faces of one of the plurality of laminations over one of the external planar faces of another of the plurality of laminations. The process also includes the steps of providing a plurality of rotor poles, providing a plurality of magnetizable permanent magnets, and overmolding rotor poles with a moldable material.

公开(公告)号：US20240097514A1

公开(公告)日：2024-03-21

申请号：US17946141

申请日：2022-09-16

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Shailesh Shrikant KOZAREKAR ,  Dexiang Dallis SUN ,  Joel HETRICK ,  Devan James ANDERSON

IPC: H02K1/28 ,  H02K1/276 ,  H02K15/03

CPC classification number: H02K1/28 ,  H02K1/276 ,  H02K15/03 ,  B60L50/60

Abstract: A stacked plurality of alternating laminations and adhesive layers of a rotor are arranged such that each of the adhesive layers bonds an outer periphery of an adjacent pair of the laminations together. Each of the laminations includes a plurality of interlocks, disposed about a central region of the lamination radially inside the outer periphery and lacking presence of any of the adhesive layers, that engage a same adjacent one of the laminations.

公开(公告)号：US11936312B2

公开(公告)日：2024-03-19

申请号：US16779829

申请日：2020-02-03

Applicant: DENSO CORPORATION

Inventor： Yuki Takahashi

IPC: H02K1/27 ,  H01F1/22 ,  H02K1/16 ,  H02K1/18 ,  H02K1/276 ,  H02K1/278 ,  H02K1/30 ,  H02K3/12 ,  H02K3/28 ,  H02K15/03 ,  H02K15/12 ,  H02K21/14 ,  H02P21/10 ,  H02P21/22 ,  H02P27/12

CPC classification number: H02P21/10 ,  H01F1/22 ,  H02K1/16 ,  H02K1/18 ,  H02K1/276 ,  H02K1/2766 ,  H02K1/278 ,  H02K1/30 ,  H02K3/12 ,  H02K3/28 ,  H02K15/03 ,  H02K15/12 ,  H02K21/14 ,  H02P21/22 ,  H02P27/12 ,  H02K2213/03

Abstract: A rotor of a rotary electric machine includes magnets arranged to face a winding. The magnets are movable relative to the winding upon the winding being energized. The magnets are arranged in a relative movement direction while magnetic polarities based on the magnets are alternately changed. Each magnet includes a first magnet member configured to generate magnet flux in accordance with a corresponding one of the polarities. The first magnet member has first magnetic orientations defined therein. Each magnet includes a second magnet member provided at a q-axis side end of the corresponding magnet located closer to a pole boundary. The second magnet member has second magnetic orientations defined therein. The second magnetic orientations intersect with the first magnetic orientations.

公开(公告)号：US11936239B2

公开(公告)日：2024-03-19

申请号：US17116661

申请日：2020-12-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alireza Fatemi ,  Anil K. Sachdev ,  Jian Yao ,  Anthony M. Coppola ,  Thomas W. Nehl ,  Chengwu Duan

IPC: H02K1/02 ,  H01F1/032 ,  H01F1/053 ,  H01F41/02 ,  H02K1/2793 ,  H02K1/32 ,  H02K15/03 ,  H02K21/24

CPC classification number: H02K1/02 ,  H01F1/032 ,  H01F1/053 ,  H01F41/0253 ,  H01F41/0266 ,  H02K1/2793 ,  H02K1/32 ,  H02K15/03 ,  H02K21/24

Abstract: A bi-material permanent magnet for an electric machine includes a core including a first magnetic material and a shell portion located on the core and made of a second magnetic material. The first magnetic material comprises a magnet material with an energy less than 20 Mega Gauss Oersteds (MGOe). The second magnetic material comprises a magnet material with an energy greater than 30 MGOe.

公开(公告)号：US11916447B2

公开(公告)日：2024-02-27

申请号：US17832308

申请日：2022-06-03

Applicant: Black & Decker Inc.

Inventor： Tong Zheng ,  Yeli Gu ,  Fulong Liu ,  Changxing Lu ,  Abraham Sanchez ,  Shailesh P. Waikar ,  David J. Smith

IPC: H02K1/30 ,  H02K15/03 ,  H02K1/02 ,  H02K1/2733 ,  H02K7/14 ,  H02K29/00

CPC classification number: H02K15/03 ,  H02K1/02 ,  H02K1/2733 ,  H02K1/30 ,  H02K7/145 ,  H02K29/00

Abstract: A brushless direct-current (BLDC) motor is provided. The motor includes a stator including a stator core, stator teeth, and windings; a rotor shaft disposed within the stator and extending along a longitudinal axis; and a rotor. The rotor includes a rotor core including an inner body mounted on the rotor shaft and radial projections projecting outwardly from the inner body, a permanent magnet mounted on an outer end of the radial projections, and a mold structure formed in contact with the radial projections and configured to secure the permanent magnet to the rotor core.

公开(公告)号：US11916442B2

公开(公告)日：2024-02-27

申请号：US17676861

申请日：2022-02-22

Applicant: HONDA MOTOR CO., LTD.

Inventor： Yasuhito Takei ,  Hiroshi Kimura ,  Atsushi Kubota

IPC: H02K1/27 ,  H02K1/28 ,  H02K15/03 ,  H02K15/00 ,  H02K1/276

CPC classification number: H02K1/28 ,  H02K1/276 ,  H02K15/0006 ,  H02K15/03

Abstract: A rotor may be provided with a rotor core that is fixed to a shaft and includes a plurality of through holes along an axial direction of the shaft. The rotor may be provided with a permanent magnet disposed in each of the plurality of through holes. The rotor may be provided with a functional fluid having a magneto rheological effect of fixing the permanent magnet in each of the plurality of through holes.

公开(公告)号：US20240055921A1

公开(公告)日：2024-02-15

申请号：US18258179

申请日：2021-12-14

Applicant: RENAULT S.A.S. ,  WHYLOT

Inventor： Jere KOLEHMAINEN

IPC: H02K1/2796 ,  H02K1/02 ,  H02K15/12 ,  H02K15/03

CPC classification number: H02K1/2796 ,  H02K1/02 ,  H02K15/12 ,  H02K15/03

Abstract: Disclosed is an element with magnetic poles for the rotor of an axial flux electric machine, including an assembly of several individual magnets and a flange, at least a first part of which surrounds the assembly in order to immobilise the individual magnets in position. At least one part of the flange is made from a material including a mixture of polymer and magnet powder.