Rotor Patents (Class 29/598)
  • Patent number: 11916441
    Abstract: A rotor includes a shaft having an outer surface including a first diameter and a flange extending from the outer surface. A first plurality of laminations is arranged about the shaft. The first plurality of laminations includes an outer annular surface and an inner surface defining an opening including a second diameter that is substantially equal to the first diameter. A second plurality of laminations is arranged about the shaft and coupled to the first plurality of laminations. The second plurality of laminations include an outer annular surface portion and an inner surface portion defining a third diameter that is greater than the first diameter.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: February 27, 2024
    Assignee: BORGWARNER INC.
    Inventors: Joshua B. Lahrman, David A. Fulton
  • Patent number: 11916437
    Abstract: In an IPM rotor, a first core sheet has a first sheet hole forming a part of an accommodation hole. The first sheet hole has an edge portion having a flat spring portion which is bent by a magnet through insertion of the magnet into the accommodation hole. A pair of recesses forming a clearance with respect to the magnet are formed at both side portions of the flat spring portion of the edge portion of the first sheet hole. A size of the clearance is set based on a relationship between a magnitude of a pressing force of the flat spring portion on the magnet and variation in pressing force.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: February 27, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masafumi Okazaki, Natsumi Sugi, Yu Hirotani, Akihiko Mori, Satoru Akutsu
  • Patent number: 11916443
    Abstract: A rotor for an electric machine, comprising a rotor shaft and a laminated core arranged on it, comprising multiple metal plates arranged in axial succession and lying against each other, as well as at least one coolant duct running through the laminated core, wherein the laminated core is axially clamped by at least one clamping means, wherein the clamping means shoved onto the rotor shaft comprises at least one axially braced spring element and at least one tolerance compensation disk.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: February 27, 2024
    Assignee: AUDI AG
    Inventors: Moritz Lux, Peter Suess, Lars Wetterau
  • Patent number: 11901792
    Abstract: A bus bar assembly includes a bus bar holder and bus bars each including a main line portion extending in a plane perpendicular or substantially perpendicular to a center axis in a posture in which a plate surface is oriented in an axial direction, and a connection terminal portion connected to an end portion of the main line portion. When viewed in the axial direction as a symmetry axis, the main line portion of the first U-phase bus bar and the main line portion of the second U-phase bus bar, the main line portion of the first V-phase bus bar and the main line portion of the second V-phase bus bar, and the main line portion of the first W-phase bus bar and the main line portion of the second W-phase bus bar, each have a shape line-symmetric to each other.
    Type: Grant
    Filed: February 4, 2022
    Date of Patent: February 13, 2024
    Assignee: NIDEC CORPORATION
    Inventor: Ryo Kamizato
  • Patent number: 11888362
    Abstract: A method for manufacturing an electric machine having a stack of magnetic laminations including a stack of green blanks. A first green blank of the stack is printed. A separating layer is applied to the first green blank. At least a second green blank of a magnetic lamination is printed onto the first green blank with the separating layer. The green blanks are jointly sintered.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: January 30, 2024
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Thomas Soller, Rolf Vollmer, Carsten Schuh
  • Patent number: 11876404
    Abstract: The electric machine includes a rotor and an internal stator operatively coupled to the rotor. The internal stator further includes a back iron having a bearing and a plurality of teeth, a plurality of ring coils wound around the back iron, a central hub, and a plurality of connectors that connects the central hub to the back iron. The back iron is made of a first material and at least one connector is made of a second material that is different from the first material.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: January 16, 2024
    Assignee: CUMMINS INC.
    Inventors: Bradford Palmer, Codrin Cantemir
  • Patent number: 11870316
    Abstract: A motor is provided including a motor housing having an open end; a stator disposed within the motor housing and including a stator core, stator windings, and an end insulator that electrically insulate the stator core from the stator windings and includes an annular body; a rotor rotatably received within the stator and including a rotor shaft extending along a longitudinal axis and permanent magnets; and a bearing bridge including a center pocket arranged to support a bearing of the rotor shaft. The bearing bridge is received at least partially within the end insulator. The annular body of the end insulator includes at least one peripheral opening located within the motor housing, and the bearing bridge is radially piloted relative to the motor housing via a retaining member received through the at least one peripheral opening.
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: January 9, 2024
    Assignee: BLACK & DECKER, INC.
    Inventors: Dustin Jefferies, David J. Smith, Marcus E. E. Rydin, Justin H. Ayers, Sumiteru Mori, Kristopher Cochran
  • Patent number: 11870301
    Abstract: A radial flux electrical machine is disclosed. The machine comprises a body of the stator having a body that defines a longitudinal axis a substantially cylindrical inner surface and an inner volume, and having a plurality of electromagnetic elements, each of which includes a stator core of ferromagnetic material and a winding of electrically conductive material located around at least part of the stator core of the electromagnetic element, the electromagnetic elements being arranged around the inner surface of the stator, and operable to induce a magnetic flux field in a radial direction in the inner volume of the stator, and a rotor located within the inner volume of the stator, and rotatable with respect to the stator.
    Type: Grant
    Filed: June 11, 2021
    Date of Patent: January 9, 2024
    Assignee: DANA TM4 UK LTD
    Inventor: Lloyd Ash
  • Patent number: 11863047
    Abstract: An electric work machine, such as a lawn mower includes a motor case (22) fixed inside a main-body housing (10). A brushless motor (21) is housed inside the motor case (22) and includes a stator (23) having a stator core (40), coils (45), and upper and lower insulators (42, 43), and a rotor (24) disposed inward of the stator (23) and having a rotary shaft (25). A spindle (17) is driven by the rotary shaft (25). The motor case (22) holds the stator (23) and axially supports the rotary shaft (25) via bearings (68, 76). One or more insulating members, such as an insulating cap (67) and/or a resin layer (78), provide electrical insulation between the stator core (40) and the rotary shaft (25).
    Type: Grant
    Filed: March 28, 2023
    Date of Patent: January 2, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Kei Kouda, Hideki Abe
  • Patent number: 11837921
    Abstract: An electric machine comprises a rotor with a rotor body, wherein the rotor body has a plurality of poles each carrying at least one rotor winding formed from a plurality of conductor loops, wherein the poles extend in a radial direction of the rotor and the conductor loops running through grooves respectively formed between two adjacent poles, wherein a support element extending in the radial direction is respectively arranged in the grooves between the rotor windings of the adjacent poles, which support element, at a radially outer end of the groove, bears up against a thrust-bearing element arranged in a radially positionally-fixed manner between the adjacent poles, wherein the support element presses the conductor loops against the rotor body during a rotation and/or a temperature increase of the rotor.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: December 5, 2023
    Assignee: Audi AG
    Inventors: Paul Böckenhoff, Tom Schneider, Paul Wetzel
  • Patent number: 11837935
    Abstract: A motor is provided including a motor housing having a substantially cylindrical body and at least one open end, a stator disposed within the motor housing, and a rotor rotatably received within the stator. The motor further includes a bearing bridge mounted on the open end of the motor housing and including a main body forming a center pocket arranged to support a rotor shaft, an outer ring configured to be fittingly received through the open end of the motor housing, and at least one fastening receptacle formed radially through the outer ring. The motor housing includes a side opening through which a fastener is radially fastened into the fastening receptable to secure the bearing bridge to the motor housing.
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: December 5, 2023
    Assignee: BLACK & DECKER, INC.
    Inventors: Dustin Jefferies, David J. Smith, Marcus E. E. Rydin, Justin H. Ayers, Sumiteru Mori
  • Patent number: 11824428
    Abstract: A rotating electrical machine includes a rotor and a magnet unit. The rotating electrical machine also includes a cylindrical stator and a housing. The stator is equipped with a stator winding made up of a plurality of phase windings. The stator is arranged coaxially with the rotor and faces the rotor. The housing has the rotor and the stator disposed therein. The rotor includes a cylindrical magnet retainer to which the magnet unit is secured and an intermediate portion which connects between a rotating shaft of the rotor and the magnet retainer and extends in a radial direction of the rotating shaft. A first region located radially inside an inner peripheral surface of a magnetic circuit component made up of the stator and the rotor is greater in volume than a second region between the inner peripheral surface of the magnetic circuit component and the housing in the radial direction.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: November 21, 2023
    Assignee: DENSO CORPORATION
    Inventors: Yuki Takahashi, Makoto Taniguchi
  • Patent number: 11824403
    Abstract: Various examples are provided related to machines utilizing heavy rare earth (HRE) free permanent magnets. In one example, a rotor assembly including a rotor core having a plurality of rotor slots and magnets positioned within the plurality of rotor slots. At least a portion of the magnets are free of heavy rare earth (HRE) elements. The magnets can include a combination HRE segments and HRE-free segments or can be free of HRE elements. The rotor assembly can be included in an electric machine such as, e.g., a permanent magnet (PM) machine.
    Type: Grant
    Filed: April 2, 2021
    Date of Patent: November 21, 2023
    Assignee: NORTH CAROLINA STATE UNIVERSITY
    Inventors: Md. Sariful Islam, Iqbal Husain
  • Patent number: 11813831
    Abstract: A method of forming an electric machine lamination includes punching a sheet having a first composition to form a cavity and a compressed region at a perimeter of the cavity. The method further includes depositing, within the cavity and on the compressed region, a deposit material having a second composition different than the first composition. The method further includes scanning a beam along the deposit material to form a bound material within the cavity and on the compressed region.
    Type: Grant
    Filed: July 14, 2021
    Date of Patent: November 14, 2023
    Assignee: Ford Global Technologies, LLC
    Inventors: Leyi Zhu, Michael W. Degner, Feng Liang
  • Patent number: 11808370
    Abstract: A mixer for mixing a mobile phase in a sample separation device for separating a fluidic sample, wherein the mixer includes a fluid inlet for supplying the mobile phase to be mixed to a mixing volume, a movable body configured for rotating and axially moving in the mixing volume to thereby mix the mobile phase, and a fluid outlet for supplying the mixed mobile phase to a mobile phase consumer.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: November 7, 2023
    Assignee: Agilent Technologies, Inc.
    Inventors: Clemens Plachetka, Manfred Berndt, Konstantin Shoykhet
  • Patent number: 11801648
    Abstract: A sheet-shaped insulating member including a thermoplastic resin fiber and an inorganic fiber is arranged on a surface of a magnet body. The insulating member is compressed while being heated to a temperature higher than or equal to a glass transition temperature of the thermoplastic resin fiber, so that the insulating member is thermocompression-bonded to the magnet body in a state in which the inorganic fiber is elastically compressed. A magnet is thus formed. With the magnet arranged in a slot of a rotor core, the magnet is heated to a temperature higher than or equal to the glass transition temperature of the thermoplastic resin fiber. This causes the inorganic fiber to restore elasticity, so that the magnet is fixed to the rotor core.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: October 31, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kenta Takeshima
  • Patent number: 11795917
    Abstract: A main rotor shaft of a wind turbine configured to reducing contact pressure at a hub joint connection includes a flanged portion and a rod portion. The flanged portion includes an outer circumferential edge, an outer radial area, and an inner radial area. The outer radial area includes holes placed around the outer radial area for attachment to a wind turbine hub. The outer circumferential edge includes a groove placed atop the outer circumferential edge. The rod portion is formed with the inner radial area and configured for connection to a gearbox of a wind turbine.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: October 24, 2023
    Assignee: General Electric Renovables Espana, S.L.
    Inventors: Hemant Bhimrao Pawar, Bradley Graham Moore, Vinay Bawane, Christopher Michael Bean
  • Patent number: 11799367
    Abstract: A rotor manufacturing method is a method that allows magnetized magnets inserted in second magnet holes of a second rotor core to be inserted, while retaining magnetism, into first magnet holes of a first rotor core. This method includes a placing step of placing the second rotor core on a first end surface, in a stack thickness direction, of the first rotor core such that the second magnet holes overlap the first magnet holes, and an extruding step of extruding the magnetized magnets from the second magnet holes toward the first magnet holes using a non-magnetic jig.
    Type: Grant
    Filed: August 4, 2021
    Date of Patent: October 24, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinya Sano, Kensuke Komori
  • Patent number: 11791679
    Abstract: A rotor includes magnets and a core including arcuately arranged pole segments. Each pole segment includes first and second prongs that extend away from the rotor axis and are at least in part arcuately spaced apart to define a cutout therebetween. Each pair of arcuately adjacent pole segments defines therebetween a respective magnet-receiving slot, with the first prong of one of the pole segments and the second prong of the other of the pole segments defining the slot. The magnets are received in slots, such that each of the magnets is at least in part interposed between one of the pairs of adjacent pole segments. The magnets and the pole segments are dimensioned and configured so that at least one of the first and second prongs is deflected by the magnet received in the respective slot, such that the prongs cooperatively apply a clamping force on the magnet.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: October 17, 2023
    Assignee: Nidec Motor Corporation
    Inventors: John M. Tucker, Lunjie Lu
  • Patent number: 11781854
    Abstract: The rotation sensing device comprises a magnet, magnetic sensors, and yokes, which are secured to the base and control the magnetic flux of the magnetic field formed by the magnet; each magnetic sensor comprises a magnetic wire, a coil, and a bobbin; each yoke comprises a left yoke piece and a right yoke piece partially covering the left portion and the right portion of the magnetic sensor; the left yoke piece has a left front plate portion, the left front plate portion, which extends linearly from the front of the left portion of the bobbin, which is to the left of the section where the coil is provided, all the way to the front of the coil, and is inclined with respect to the direction of extension of the magnetic wire such that the right end thereof is located rearwardly of left end thereof.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: October 10, 2023
    Assignee: Hirose Electric Co., Ltd.
    Inventor: Kosuke Egawa
  • Patent number: 11777348
    Abstract: A rotor core for an electric machine of an automobile includes a core stack including a plurality of lamination plates. Each lamination plate includes a plurality of apertures formed therein. The plurality of apertures of each of the lamination plates are axially aligned and define and a slot extending through the core stack and shaped to receive a corresponding insert. The rotor core also includes at least one insert received by the slot that provides radial structural stability to the plurality of lamination plates to prevent portions of the plurality of lamination plates adjacent the plurality of magnet slots from flexing due to radial forces exerted on the plurality of lamination plates during operation of the rotor core. The rotor core includes a load bearing polymer disposed within the aperture of the rotor core that provides contact between and the insert and the lamination plates.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: October 3, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Derek Frei Lahr, Alireza Fatemi, Anthony Michael Coppola
  • Patent number: 11770056
    Abstract: A manufacturing method of a laminated iron core by laminating a plurality of blanked members to form a laminate, the laminate including a pair of first and second end surfaces and the plurality of blanked members being interlocked by a caulk in a lamination direction of the laminate, includes: forming the laminate such that a protrusion of the caulk protrudes downward from the first end surface being in a downward state; placing the laminate on support such that the protrusion is not in contact with a support surface of the support; and processing the laminate in a state where the laminate is placed on the support.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: September 26, 2023
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Shigeru Nagasugi, Takashi Fukumoto, Jin Oda
  • Patent number: 11766855
    Abstract: A method for connecting lamination parts to form lamination stacks. In order to ensure a versatile applicability of the lamination stacks, it is proposed that first cut-outs are stamped out identically in the first sub-region and in a second sub-region of the electric strip, additional second cut-outs are stamped into the second sub-region in accordance with the number of spacers, which second cut-outs are embodied to accommodate the spacers, and a second lamination part stamped out from the second sub-region is stacked either before or after the first lamination part in such a way that when spacers of the first lamination part are resting against this second lamination part, the second cut-outs are positioned offset from these spacers.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: September 26, 2023
    Assignee: voestalpine Automotive Components Dettingen GmbH & Co. KG
    Inventors: Jochen Lanksweirt, Axel Nann
  • Patent number: 11757317
    Abstract: A spoked rotor is rotatable about an axis. The rotor includes a core. The core includes a plurality of pole segments arranged arcuately about the axis. The rotor includes a plurality of arcuately arranged magnets alternating arcuately with the pole segments, such that each of the magnets is at least in part interposed between a pair of adjacent pole segments. Each of the magnets includes a curved section extending arcuately between radially inner and outer curved section ends. An effective rotor pole location is defined on each of the pole segments. Each of the pole segments has an end opposite the effective rotor pole location. A center point is defined at the pole segment end. Each of the effective rotor pole locations is arcuately offset from a corresponding one of the center points by between about five tenths (0.5) rotor poles and about two (2.0) rotor poles.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: September 12, 2023
    Assignee: Nidec Motor Corporation
    Inventors: Ryan M. Bastien, Lunjie Lu
  • Patent number: 11752544
    Abstract: A centrifugal casting apparatus comprising an upper portion into which molten material is poured, the upper portion having a central rotational axis about which the apparatus is rotated; at least one block runner is connected to the upper portion at the proximal end of the block runner and to at least one mould at the distal end of the block runner, the block runner being mounted substantially perpendicular to the axis of rotation; and wherein the moulds are oriented substantially parallel to the axis of rotation of the centrifugal casting apparatus.
    Type: Grant
    Filed: November 4, 2021
    Date of Patent: September 12, 2023
    Assignee: ROLLS-ROYCE plc
    Inventors: Rui Yang, Yuyou Cui, Paul A Withey, Nicholas Green, Feiyang Liu
  • Patent number: 11750076
    Abstract: Apparatus, systems, and methods used to produce linear and rotational motion, acceleration, and actuation by the use of mobile ferromagnetic or permanent magnets subjected to asymmetric electromagnetic field distributions are disclosed herein. A variety of exemplary embodiments and applications are described, involving different coil and actuator geometries to include and allow for both stationary and moving magnets, electric fields, and magnetic fields.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: September 5, 2023
    Inventor: Thomas Alexander Johnson
  • Patent number: 11750052
    Abstract: A rotating electric machine rotor according to the present disclosure includes: a rotor shaft extending in a direction of an axis of rotation; and a rotor core fixedly fitted to an outer circumference of the rotor shaft and formed of laminated steel sheets. Further, an inner diameter of the rotor core is smaller than an outer diameter of the rotor shaft. Furthermore, an inner edge part of each laminated steel sheet is made thinner than an outer edge part thereof, and the inner edge part abuts on an outer peripheral surface of the rotor shaft and is curved along the outer peripheral surface of the rotor shaft in the direction of the axis of rotation.
    Type: Grant
    Filed: January 6, 2022
    Date of Patent: September 5, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Koichi Ono, Hiroaki Kodera, Keiichi Kaneshige
  • Patent number: 11742721
    Abstract: A rotor assembly for a permanent magnet motor, including: a rotor shaft comprising an internal cavity having an inlet and an outlet; and a rotor core disposed about the rotor shaft, comprising an internal channel having an inlet and an outlet; wherein the outlet of the internal cavity of the rotor shaft is coupled to the inlet of the internal channel of the rotor core; and wherein the internal cavity of the rotor shaft and the internal channel of the rotor core are configured to circulate a cooling fluid through the rotor shaft and the rotor core. The rotor core includes a plurality of permanent magnets adapted to interact with a stator assembly disposed about/adjacent to the rotor core.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: August 29, 2023
    Assignee: Rivian IP Holdings, LLC
    Inventors: Dang Dinh Dang, Larry Xiong
  • Patent number: 11735983
    Abstract: A widening apparatus for a hairpin-type stator coil is provided to extend a distance between welding portions of hairpin-type stator coils inserted into slots of a stator core, and the widening apparatus includes, a coil support unit installed on a base frame, a tool driving unit installed on the base frame to be vertically movable below the coil support unit, and including a first gear operation part and a second gear operation part, a plurality of lower widening tools operably connected to the first gear operation part, and reciprocally movable along a layer direction of the stator coils, and a plurality of upper widening tools operably connected to the second gear operation part, and configured to be reciprocally movable above the plurality of lower widening tools.
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: August 22, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Yeongsu Yu, Myoung Gil Han, Jiwon Yu
  • Patent number: 11735985
    Abstract: A method and apparatus for forming a rotor for an electric machine includes serially adding layers of material to form a rotor body having a radially-extending post configured to receive a set of electrically-conductive windings, and also having a radially-extending winding end turn support formed contiguously from the rotor body.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: August 22, 2023
    Assignee: GE Aviation Systems LLC
    Inventors: Veeraraju Vanapalli, Deepak Ghiya, Raghavendra Rao Adharapurapu, Hao Huang, James Patrick Mahle
  • Patent number: 11735976
    Abstract: Provided are a rotor shaft assembly, a rotor, and a motor. The rotor shaft assembly includes a magnetic core, a first end shaft, a second end shaft, and a protective sleeve. The protective sleeve is provided, in sequence, with a first through hole, a second through hole, and a third through hole; the first end shaft is disposed through the first through hole, at least part of the magnetic core is arranged inside the second through hole, and the second end shaft is disposed through the third through hole.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: August 22, 2023
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Liming Peng, Jinxin Jia, Xiaobo Zhang, Jianning Liu, Fang Zhang, Guanghai Li, Changguang Guo, Qiong Wei, Zhongyu Li, Jin Yan, Jiandong Liang, Bowen Xiong, Zeye Wang
  • Patent number: 11724311
    Abstract: Systems and methods form induction rotors by performing isostatic pressing (HIP) to weld clad to a shaft, which allows for scaling the manufacturing of solid steel rotors, as compared to conventional techniques. In examples, the rotors are designed for high-speed motors and may include recessed short circuit rings and/or end rings. An exemplary process molds an alloy powder into cladding such that heretofore unachievable rotor designs are achievable according to systems and methods described herein. In examples, a thin source-layer is introduced to welding zones, thereby enriching and strengthening the resulting joint at welding zones. The source-layer may be introduced by adding an intermediate layer comprising the source material between the materials being welded. The reduced alloy-depletion welding disclosed herein strengthens the welding area joints and provides for the manufacture of component designs, which were previously unachievable due to alloy-depletion weaknesses and environmental constraints.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: August 15, 2023
    Assignee: Ingersoll-Rand Industrial U.S., Inc.
    Inventors: Fredrik Boxberg, Juha T. Saari, Esa H. M. Vikman
  • Patent number: 11728701
    Abstract: This canned motor (10) is provided with a rotor (14); a cylindrical rotor can (42) that houses the rotor (14); an end plate (40) that covers an opening of the rotor can (42) in the axial direction and is joined to the rotor can (42); a rotating shaft (16) that passes through the rotor (14) and the end plate (40); and an annular wall (46) that surrounds the outer circumference of the rotating shaft (16), is joined to or integrated with the end plate (40), and is joined to the entire circumference of the rotating shaft (16) at an end thereof in the axial direction. The thickness of the end plate (40) is larger than the thickness of the annular wall (46).
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: August 15, 2023
    Assignee: NIKKISO CO., LTD.
    Inventors: Kazuo Futatsugi, Osamu Watanabe, Yasushi Kubota, Yu Kodama, Masaaki Eguchi
  • Patent number: 11715986
    Abstract: A motor includes a rotor and a stator including a stator core and a winding including a first extension extending with respect to the stator core toward one side in a rotation-axis direction of the rotor, a second extension extending toward a rotation-radial direction outside of the rotor from an end of the first extension on the one side in the rotation-axis direction, and a third extension extending toward the one side in the rotation-axis direction from an end at the rotor rotation-radial direction outside of the second extension, and connected to a circuit device, and the winding forming a coil around the stator core, and such that an inner bent portion at a boundary between the first and second extensions is disposed at the one side in the rotation-axis direction with respect to an outer bent portion at a boundary between the second and third extensions.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: August 1, 2023
    Assignee: DENSO CORPORATION
    Inventors: Shinji Ikeda, Takumi Nagaya, Tatsuya Takagi, Kuniaki Matsumoto, Kazuhiro Hosotani, Yutaro Yagi, Yoshihiko Suga, Takuya Matsumoto, Shunichi Hiraoka
  • Patent number: 11715999
    Abstract: A method to make a stator lamination of an axial flux motor for an automobile vehicle includes: constructing a stator having multiple stator stack members, including: providing a stator lamination with individual ones of the stator stack members; forming the stator lamination from a single lamination sheet of steel defining a sinuous-shaped assembly having multiple bends; compressing the stator lamination; and machining the stator lamination to create a first edge by removing a first portion of the multiple bends and to create a second edge opposite to the first edge by removing a second portion of the multiple bends.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: August 1, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Anil K. Sachdev, Chengwu Duan, Alireza Fatemi
  • Patent number: 11699931
    Abstract: A rotor structure of a magnet motor includes a rotating shaft and an iron core on the rotating shaft. Magnet grooves are disposed inside the iron core along a circumferential direction with a magnet provided therein. A distance between an edge line of the magnet groove close to a circumferential edge of the iron core and the circumferential edge of the iron core varies so that a width of a flux barrier formed varies. One end of a long side of the magnet groove close to the circumferential edge is formed with an anti-demagnetization groove communicating with the magnet groove, and an edge line of the anti-demagnetization groove tilts toward the circumferential edge of the iron core. Process slots are provided between the magnet grooves and the circumferential edge of the iron core that are used to increase a salient rate and reluctance torque of the motor.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: July 11, 2023
    Assignee: Jing-Jin Electric Technologies Co., Ltd.
    Inventors: Xuan Zou, Liangliang Zhang, Chunshuang Feng, Chunxia Cai, Lei Han, Yang Zhang, Dandan Qi, Xin Xu, Kaihe Zhang, Biqing Sun
  • Patent number: 11682950
    Abstract: A manufacturing method of a rotor for an electric motor is disclosed herein. The rotor may include a rotor core having a through hole that extends along an axial direction of the rotor; a magnet inserted in the through hole; and a sheet disposed between an inner surface of the through hole and the magnet. The method may include inserting the sheet into the through hole such that the sheet extends through the through hole; and inserting the magnet into the through hole while the sheet is pulled at axial ends of the sheet in opposite directions to apply tension to the sheet and press the sheet against the inner surface.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: June 20, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenta Takeshima, Shuzaburo Kita
  • Patent number: 11670994
    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.
    Type: Grant
    Filed: May 2, 2022
    Date of Patent: June 6, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Masayuki Akaishi
  • Patent number: 11654766
    Abstract: An electric motor includes a stator, a rotor and a rotor carrier radially inside of the rotor non-rotatably fixed to the rotor. The rotor carrier includes an axially extending cylindrical section including an outer circumferential surface having an annular groove formed therein. A method of forming a rotor carrier includes forming, by stamping, a rotor carrier including an axially extending cylindrical section including an outer circumferential surface having annular groove formed therein.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: May 23, 2023
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Timothy Simon, David Brucato
  • Patent number: 11646646
    Abstract: The continuous wires respectively have U-shaped parts and straight parts. The method includes: a transposition shape forming step of forming transposition shapes in each of which, among at least the two continuous wires belonging to an identical phase, the U-shaped part of one of the continuous wires is disposed inside the U-shaped part of the other one of the continuous wires; an inclined part forming step of causing the pairs of straight parts of the continuous wires respectively formed with the transposition shapes to be offset to form inclined parts on the continuous wires; and a folding step of folding the continuous wires formed with the inclined parts to form the turning parts and the slot disposition parts. The inclined part forming step and the folding step are alternately performed.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: May 9, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takahiro Ide, Akihiro Watanabe
  • Patent number: 11641139
    Abstract: A lubricant supported electric motor includes an outer stator and an inner stator each extending around an axis in radially spaced relationship with one another. A rotor is rotatably disposed between the inner and outer stators to define an inner gap extending radially between the rotor and the inner stator and an outer gap extending radially between the rotor and the outer stator. A lubricant is disposed in both of the inner and outer gaps for supporting the rotor radially between the inner and outer stators. The lubricant supported motor with a two-sided radial flux configuration results in improved rotor-to-stator system stiffness to allow the lubricant supported electric motor to be used in high shock and high vibration environments, while also providing high torque in a small and lightweight design package.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: May 2, 2023
    Assignee: NEAPCO INTELLECTUAL PROPERTY HOLDINGS, LLC
    Inventors: Donald Remboski, Jacqueline Dedo, Mark Versteyhe
  • Patent number: 11637486
    Abstract: A guide device which is a rotor manufacturing device includes a pair of sheet guides and a holder. The holder is disposed between the pair of sheet guides and includes a magnet outlet through which a permanent magnet is inserted into the slot from above. The pair of sheet guides is linearly symmetrical in a front view in which a side of the pair of sheet guides is located at the front. The axis of symmetry of the pair of sheet guides and the center axis of the magnet outlet are aligned with each other in the front view.
    Type: Grant
    Filed: May 3, 2022
    Date of Patent: April 25, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Masayuki Akaishi
  • Patent number: 11632004
    Abstract: An electric motor includes a stator including four split cores, and a rotor having four magnetic poles. Each of the split cores includes a yoke and a tooth. An angle ?1 [degree] formed by a side surface of the tooth and a side surface of the yoke on an inner side in a radial direction of the stator satisfies 90 degrees ??1<180 degrees.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: April 18, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuchika Tsuchida, Yuji Takayama, Keisuke Uemura
  • Patent number: 11605988
    Abstract: A method for manufacturing a laminated iron core includes providing a plurality of annular iron core piece rows, each of which is configured by annularly arranging a plurality of divided iron core pieces including yokes and teeth, and the yokes of the annularly-adjacent divided iron core pieces in the annular iron core piece row are mutually different in shape. In the method, the annular iron core piece rows are laminated by changing a rotational angle of the newly laminated annular iron core piece row relatively to the lastly laminated annular iron core piece row laminated so that the divided iron core piece with a shape different from that of the divided iron core piece is laminated on the lastly laminated divided iron core piece.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: March 14, 2023
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Shuichi Nakamura, Daisuke Momota
  • Patent number: 11594927
    Abstract: Provided is a rotating electric machine capable of downsizing a coil end. The rotating electric machine includes an armature core and a plurality of coils. The plurality of coils each include a plurality of turn portions. The plurality of turn portions each include an inner-layer-side turn portion and an outer-layer-side turn portion. The inner-layer-side turn portion includes a first inner-layer-side bent portion, a first inner-layer-side oblique portion, and an inner-layer-side shift portion which is twisted. The outer-layer-side turn portion includes a first outer-layer-side bent portion, a first outer-layer-side oblique portion, and an outer-layer-side shift portion. The outer-layer-side shift portion has the inner-layer-side shift portion arranged between the outer-layer-side shift portion and the armature core.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: February 28, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuro Hino, Katsuya Ito, Hiroyuki Yasuda, Tatsuki Kawashima, Kazuya Hasegawa
  • Patent number: 11565504
    Abstract: A method for connecting lamination parts to form a lamination stack in which lamination parts are stamped out from an electrical strip that is coated with an activatable adhesive layer on at least one of its flat sides and the stamped-out lamination parts are stacked and glued to form lamination stacks, wherein before the lamination parts are stamped out, the electrical strip is embossed in a first sub-region, which produces multiple protruding spacers on at least one flat side of the electrical strip, which spacers, after a first lamination part is stamped out from this first sub-region, facilitate a detachment of the stacked and glued lamination parts into lamination stacks.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: January 31, 2023
    Assignee: Voestalpine Automotive Components Dettingen GmbH & Co. KG
    Inventors: Jochen Lanksweirt, Axel Nann
  • Patent number: 11552541
    Abstract: An induction motor includes a stator and a rotor. The stator is configured to generate a rotating magnetic field. The rotor is disposed inside the stator, separated from the stator by an air gap, and is configured to rotate around an axis in response to the rotating magnetic field. The rotor includes a rotor core, multiple end rings, and multiple collars. The end rings are attached at opposite ends of the rotor core. Each end ring has one of multiple regions disposed outside the air gap. Each region has an outer surface. The collars are attached in a prestressed condition around the outer surface of each region. The prestressed condition is configured to maintain a compressive stress in the end rings at a maximum-designed rotational speed of the rotor.
    Type: Grant
    Filed: January 18, 2021
    Date of Patent: January 10, 2023
    Assignee: GM Global Technology Operations LLC
    Inventors: John S. Agapiou, Edwin H. Chang, Yew Sum Leong
  • Patent number: 11522422
    Abstract: A method to produce rotors or stators of electric machines having radial grooves into which webs of flat windings having parallel webs and winding heads connecting said webs being pulled, wherein a winding is produced on a rotating, strip-shaped flat former shorter than the winding such that windings are pulled off the former and transferred into a linear transfer device, which transports the windings to a removal position at which the windings are transferred into radial grooves of a rotor or of the transfer tool for transfer into radial grooves of a stator, wherein the former, the transfer device, and the rotor or the transfer tool being jointly rotated about an axis of rotation of the former when rotated to form windings.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: December 6, 2022
    Assignee: Schaeffler ELMOTEC STATOMAT GmbH
    Inventors: Sadik Sadiku, Keith Alan Witwer
  • Patent number: 11522409
    Abstract: Shaft for an electric machine, includes a core seat for a laminated core and two shaft ends extending axially outwardly from the core seat in opposite directions, wherein the core seat has at least one core seat portion extending in the axial direction with a polygonal profile for forming a polygonal connection to the laminated core.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: December 6, 2022
    Assignee: VALEO SIEMENS EAUTOMOTIVE GERMANY GMBH
    Inventor: Regina Bach
  • Patent number: 11482897
    Abstract: A rotor includes an assembly of laminations including a plurality of radially-projecting poles, a winding of electrically conductive wires to be wound around each pole by means of wire-guiding heads arranged axially on either side of the lamination assembly. A guiding head support is inserted between the lamination assembly and each guiding head such that: an internal radial face of the support abuts against an external radial face at an axial end of the lamination assembly; and a peripheral surface of the support, which projects axially outward from the internal radial face of the support, is in contact with a contact face of the guiding head that is orientated radially outward from same, the guiding head abutting against the peripheral surface of the support.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: October 25, 2022
    Assignees: Renault s.a.s., NISSAN MOTOR CO., LTD.
    Inventors: Shahab Tavakoli, Joel Pressoir