Dynamoelectric Machine Patents (Class 29/596)
  • Patent number: 11190087
    Abstract: A method for manufacturing a laminated iron core including placing a laminated iron core body on a conveyance jig. Downwardly moving the conveyance jig by a lift and downwardly moving an upper die with respect to a lower die of the die unit. The lift being mounted so as to be unaffixed to both the die unit and the conveyance jig. Holding the laminated iron core body placed on the conveyance jig from both sides in a lamination direction of the plurality of iron core pieces between the lower die and the upper die, the lower die coming into contact with the conveyance jig. Injecting a resin into a through hole formed through the laminated iron core body held by the die unit in the lamination direction of the plurality of iron core pieces from the lower die through the conveyance jig or from the upper die.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: November 30, 2021
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Hirotoshi Mabu, Hidemi Sasaki
  • Patent number: 11177712
    Abstract: A method is provided for fabricating an insulated metal coil for an electrical machine. The method includes 3D printing a metal coil having a plurality of turns. The method further includes subsequently infiltrating insulating material between the turns of the metal coil to electrically insulate the turns from each other.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: November 16, 2021
    Assignee: ROLLS-ROYCE plc
    Inventors: Alexis Lambourne, Iain Todd, Geraint W Jewell
  • Patent number: 11165299
    Abstract: The coil assembling apparatus includes a transport means for transporting in sequence a plurality of coil segments, each of the plurality of coil segments consisting of a pair of slot insertion portions and a linking portion for coupling the pair of slot insertion portions, a segment arrangement body capable of rotating around a center axis thereof and provided with a plurality of segment hold portions annularly arranged along a circumferential direction of the segment arrangement body, into which the plurality of coil segments transported by the transport means can be respectively inserted from an outer radial directions of the segment arrangement body, and a guide means for guiding to insert one slot insertion portion of the pair of slot insertion portions of each of the coil segments into one of the segment hold portions each time the segment arrangement body rotates by a first predetermined angle.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: November 2, 2021
    Assignee: ODAWARA ENGINEERING CO., LTD.
    Inventors: Noburo Miyawaki, Takayuki Mochizuki
  • Patent number: 11165315
    Abstract: A manufacturing method for obtaining an interior permanent magnet-type inner rotor without thermal demagnetization due to shrink fitting to a rotating shaft includes: a shrink fitting step of heating a rotor core having slots and inserting a rotating shaft into a shaft hole to shrinkfit the rotor core; and a filling step of filling the rotor core slots in a residual heat state after the shrink fitting step with a flowable mixture of a binder resin heated to a flowable state and anisotropic magnet particles, in oriented magnetic fields This allows, in similar manufacturing steps, an inner rotor of which the magnetic poles are anisotropic bond magnets formed by solidifying the flowable mixture in the slots and a conventional inner rotor of which the magnetic poles are sintered magnets. This allows both the inner rotors concurrently and in parallel (mixed flow production) in an already existing IPM motor manufacturing line.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: November 2, 2021
    Assignee: AICHI STEEL CORPORATION
    Inventors: Tadashi Fujimaki, Hiroshi Matsuoka, Yoji Hashimoto
  • Patent number: 11165319
    Abstract: A method of inserting a winding into a stator having skewed slots formed on an inside diameter of a stator lamination includes forming a conductor having a plurality of slot segments, loading the conductor into a plurality of skewed slot elements of a linear cartridge having a first end, a second end, and a linear axis connecting the first end and the second end, the plurality of skewed slot elements being angled relative to the linear axis, transferring the conductor from the linear cartridge to a plurality of skewed slot members formed in an outside diameter of a rotary cartridge, inserting the rotary cartridge into the inside diameter of the stator lamination, and shifting the conductor from the rotary cartridge into the skewed slots of the stator.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: November 2, 2021
    Assignee: BORGWARNER INC.
    Inventors: Kirk Neet, Seong Taek Lee
  • Patent number: 11152829
    Abstract: The invention relates to a nested winding for a slotless motor. The nested winding is formed by inner and outer windings which are nested together and have different inner and outer diameters, wherein the number of the inner and outer windings is n, same-phase coils are connected in parallel or in series, and the number n of the nested inner and outer windings is equal to or greater than two. Compared with the prior art, the nested winding has the following advantages: a potential difference between the coils connected in parallel can be effectively reduced, and accordingly, the loss of the winding is reduced, and the high-speed operating performance of the motor is improved.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: October 19, 2021
    Assignee: SHANGHAI MOONS' ELECTRIC CO., LTD.
    Inventors: Bang Yuan, Binsong Tang, Xiaotian Tan, Wanbing Jin
  • Patent number: 11146155
    Abstract: Provided are an alignment method and an alignment device by which, immediately before aligning, the leg parts of adjacent conductors do not interfere with each other. The alignment method, in which by providing a plurality of coil elements (40) in an annular shape and moving the plurality of coil elements (40) in a direction in which the diameter of the annular shape is reduced, the plurality of coil elements (40) are aligned in a state where turn sections (42) provided at substantially apex portions are alternately overlapped, wherein the plurality of coil elements (40) are aligned by moving each of the plurality of coil elements (40) toward an annularly shaped center, and while doing so, rotating the plurality of coil elements about a rotation axis (231e) that is parallel to the central axis (C1) of the annular shape.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: October 12, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Daisuke Ueno, Kenichi Ohno, Yutaka Matsumoto, Shinichi Kawano, Mitsugu Ueno
  • Patent number: 11146125
    Abstract: A permanent magnet machine includes a machine housing and a stator. The machine housing has an inner surface. The stator is disposed within the machine housing. The stator has a stator core having an exterior surface. At least one of the inner surface and the exterior surface defines a discontinuous region that is arranged to minimize points of contact between the inner surface and the exterior surface.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: October 12, 2021
    Assignees: Steering Solutions IP Holding Corporation, The University of Akron
    Inventors: Kenneth Webber, Delynn Streng, Iftekhar Hasan, Yilmaz Sozer, Alejandro J. Pina Ortega, Jeffrey T. Klass, Mohammed R. Islam
  • Patent number: 11114912
    Abstract: A rotating electric machine includes a stator and a rotor. The stator includes a stator core and a stator winding that includes phase coils wound around slots of the stator core. Each phase coil is configured such that: a first end is connected to an external terminal; a second end is connected to a neutral point; and 2n (n being a natural number) circling coils are arranged to circle the stator core and connected in series. A neutral-point-side coil is housed in a first slot where a terminal-side coil is housed. The terminal-side coil is a circling coil that is arranged on the external-terminal side of a first phase coil among the phase coils. The neutral-point-side coil is a circling coil that is arranged on the neutral-point side of a second phase coil among the phase coils. The second phase coil is different in phase from the first phase coil.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: September 7, 2021
    Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masahito Fujieda, Yuichiro Ito, Shingo Nagai
  • Patent number: 11101720
    Abstract: The invention relates to a method for connecting free flat wire ends (4, 5) with a substantially rectangular cross section with four sides (41, 42, 43, 44) of a stator of an electrical machine, comprising the steps at: stripping a first flat wire end (4), sheathed with an insulation material, such that partial stripping is carried out at least on three sides (41, 42, 43) and such that the insulation material remains complete on a fourth side (44) of the first flat wire end (4), and electrically connecting the stripped first flat wire end (4) on the completely stripped side (43) to a second flat wire end (5).
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: August 24, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Tobias Hein, Fabian Lange, Martin Ermer
  • Patent number: 11095171
    Abstract: One embodiment relates to a stator unit and a motor comprising same, the stator unit comprising: a stator core; a coil wound around the stator core; and an insulator disposed between the stator core and the coil, wherein the stator core comprises a support part, and a coil winding part disposed on both side surfaces of the support part so as to protrude therefrom, wherein the support part and the coil winding part are disposed so as to form a cross shape. Accordingly, a coil space factor may be increased by using the cross-shaped stator core.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: August 17, 2021
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Tae Ho Kim, Yong Chui Kim, Sun Ho Jo
  • Patent number: 11088585
    Abstract: A motor unit includes a stator including a coil formed from a wound winding that is configured by a conductive member including an insulating covering layer on the surface of the conductive member, a rotor that rotates under the influence of a rotating magnetic field generated by the stator, and a centerpiece that supports the stator and is formed with a centerpiece-side winding insertion hole through which the winding is inserted. The motor unit also includes a circuit device and a potting section. The potting section is formed using potting material, and seals a gap formed between the centerpiece-side winding insertion hole and the winding by achieving a state in which a portion of the potting section is closely adhered to the covering layer of the winding.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: August 10, 2021
    Assignee: DENSO CORPORATION
    Inventors: Shinji Ikeda, Takumi Nagaya, Tatsuya Takagi, Kuniaki Matsumoto, Kazuhiro Hosotani, Yutaro Yagi, Yoshihiko Suga, Takuya Matsumoto, Shunichi Hiraoka
  • Patent number: 11081943
    Abstract: A method of forming a stator for an electric machine includes forming a first conductor and a second conductor into a plurality of bends having a first winding pitch, creating a winding layer by introducing the first conductor and the second conductor into a first pole of a stator with the second conductor being on top of the first conductor at a first end loop crossing zone. The winding pitch of the first conductor is changed to a second winding pitch and the winding pitch of the second conductor is changed to a third winding pitch. The first conductor is woven relative to the second conductor between the first pole and a second pole. The first conductor and the second conductor are introduced into the second pole of the stator with the first conductor being on top of the second conductor at a second end loop crossing zone.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: August 3, 2021
    Assignee: BORGWARNER INC.
    Inventors: Kirk Neet, Stephen Humphrey
  • Patent number: 11081945
    Abstract: Provided is a manufacturing method for a stator coil in which end portions of one-side conductor segments inserted into slots from the side of one end in an axial direction of a stator core and end portions of other-side conductor segments are connected to each other through coupling members inside the slots. The method includes: pressing in the one-side conductor segment or the other-side conductor segment in an insertion direction in a state where the end portion of the one-side conductor segment or the end portion of the other-side conductor segment, or an end portion of the coupling member has been moved toward the inner circumferential side of the stator core; connecting the end portion of the one-side conductor segment and the end portion of the other-side conductor segment to each other; and executing the pressing in and the connecting sequentially from the outer circumferential side of the stator core.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: August 3, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasushi Nishikuma, Daisuke Mizushima, Yasuyuki Hirao
  • Patent number: 11075569
    Abstract: A method of engaging wire ends of a stator assembly. The method involves advancing multiple fingers radially inwardly toward the wire ends, and rotating the fingers. The fingers have protrusions that engage the wire ends. A tooling assembly for engaging the wire ends has a first plate, a second plate, and has the fingers. The first plate has slots, and the second plate has teeth. The fingers have pins that ride in the slots of the first plate, and the fingers have teeth that mesh with the teeth of the second plate.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: July 27, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dalton D. Matznick, Mithun Sunny, Timothy M. Wilson, Frederick W. Rhoads
  • Patent number: 11070102
    Abstract: A motor using a printed circuit board may include: a first base part forming a first circuit board on which a coil pattern is printed; a second base part forming a second circuit board on which the coil pattern is printed, the second base part spaced apart from the first base part; and a plurality of side parts forming side circuit boards on which the coil pattern is printed, the plurality of side parts connected to the first base part and the second base part, respectively, such that the coil pattern successively connects the first base part, the second base part, and the plurality of side parts.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: July 20, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jun Hwan Park, Seok Won Lee
  • Patent number: 11063501
    Abstract: A positioning device may be used to peripherally position copper rods about a center axis that defines an axial direction. Each of the copper rods may be generally U-shaped and may have a first leg portion and a second leg portion. The positioning device may include a positioning body, a rotary body, locking means, and a rotary drive. Grooves of an outer peripheral surface of the positioning body may receive the first leg portions of the copper rods, which can be locked in place by the locking means. The rotary body may be rotatable about the positioning body and may include guide channels that receive the second leg portions of the copper rods. The rotary drive can cause the rotary body and the positioning body to rotate relative to one another, to pivot the second leg portions inwardly into the grooves of the positioning body.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: July 13, 2021
    Assignees: THYSSENKRUPP SYSTEM ENGINEERING GMBH, THYSSENKRUPP AG
    Inventor: Andreas Walter
  • Patent number: 11063490
    Abstract: One embodiment relates to a motor comprising: a motor housing comprising a first housing and a second housing; a stator disposed in the motor housing; a coil wound around the stator; a rotor rotatably disposed in the stator; a shaft coupling with the rotor; a bearing for supporting the shaft; and a busbar terminal connected with an end portion of the coil, wherein the first housing comprises a body part and a first flange, the body part comprising a first region, and a second region extending from the first region, and the first flange extending in a vertical direction from an end portion of the second region, and the busbar terminal and the bearing are disposed in the first region. Accordingly, the structure of the motor may be simplified, and a gap due to tolerance among components may be minimized, and thus the reliability of the motor may be enhanced.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: July 13, 2021
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Sung Joo Oh, Woo Jin Hyun
  • Patent number: 11056954
    Abstract: An electric machine includes a stator core defining slots and a first hairpin assembly installed in the stator core. The first hairpin assembly includes first and second same hairpins, each having first and second ends and separately coated to have first and second outer coating surfaces, respectively. The hairpin assembly is in first and second ones of the slots such that the first and second outer surfaces are touching. A weld material joins the first ends and another weld material joins the second ends.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: July 6, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Feng Liang, Michael W. Degner
  • Patent number: 11050309
    Abstract: A stator and a method of manufacturing the same for facilitating a winding step of armature windings and reducing cogging torque. A segment part 121 radially having a plurality of teeth 121A and joined arcuately at one end is punched out from an oriented electromagnetic steel sheet 200, such segment parts 121 are circularly connected, the circularly connected segment parts 121 are stacked thereby forming a tooth part 120, armature winding 130 is wound from the other end of the tooth 121A, and the tooth part 120 is fitted into a circular yoke part 110 having a plurality of recesses 111 at the inner circumference and stacked in the axial direction of the motor.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: June 29, 2021
    Assignee: NISSO ELECTRIC CORPORATION
    Inventor: Hiroshi Shibuya
  • Patent number: 11050316
    Abstract: There is provided an axial gap rotary electric machine which includes a stator in which a plurality of core units, the core units having a core, a winding disposed in an outer periphery of the core, and a bobbin disposed between the core and the winding, are arranged in an annular shape about a rotation shaft, at least one rotor which faces an end surface of the core in an axial direction through a gap, a rotation shaft which rotates together with the rotor, and a housing in which the stator and the rotor are stored. A wiring fixing member is provided in an end surface and on an outer side of the stator in the axial direction, and includes an outer wall and an inner wall extending in a circumferential direction along a circumferential outer shape of the stator. The stator includes a crossover wire which leads the winding from the core unit. The crossover wire is disposed between the outer wall and the inner wall of the wiring fixing member.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: June 29, 2021
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Yasuei Yoneoka, Shuuichi Takahashi, Toshifumi Suzuki, Katsuyuki Yamazaki, Daisaku Takahashi, Daisuke Kurai, Jun Sakurai
  • Patent number: 11005323
    Abstract: A shaft of a rotor includes a cylindrical core member and a resin member. An uneven portion made up of first hole portions is formed on an outer peripheral surface of the core member. The resin member covers the outer peripheral surface of the core member, while being adhesively fixed to the first hole portions. A rotor core is attached to a periphery of the resin member.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: May 11, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomohiro Segawa, Hiroshi Kinpara
  • Patent number: 10992211
    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: December 2, 2016
    Date of Patent: April 27, 2021
    Assignee: Schaeffler ELMOTEC STATOMAT GmbH
    Inventors: Sadik Sadiku, Keith Witwer
  • Patent number: 10971975
    Abstract: A method for improving thermal conduction in a stator having electrically conductive windings wound in a plurality of gaps formed between adjacent pairs of a plurality of teeth of the stator. A plurality of interstitial spaces are formed within each of the gaps during winding of the electrically conductive windings around the teeth. A plug is arranged within each one of the gaps to close off slot openings. A thermally conductive filler compound is injected into each gap under sufficient pressure to at least substantially fill the interstitial spaces within each gap and to at least substantially encapsulate the electrically conductive windings. The thermally conductive filler compound is then allowed to set.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: April 6, 2021
    Assignee: American Axle & Manufacturing, Inc.
    Inventor: Jeffrey J. Ronning
  • Patent number: 10971965
    Abstract: A motor includes a rotor, a stator, and a circuit board below the stator. The stator includes an insulator to cover at least a portion of each of an upper surface, a lower surface, and circumferential side surfaces of each of teeth of the stator, coils each of which is defined by a conducting wire wound around a separate one of the teeth with the insulator therebetween, and a drawn-out wire drawn out from the coils and electrically connected to the circuit board. A lower portion of the insulator includes a guide radially outward of the coils and including a wall extending downward from a lower surface of the insulator and a bend extending radially outward from a lower end of the wall. At least a portion of the drawn-out wire extends in a circumferential direction along a radially outer surface of the wall.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: April 6, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Shingo Yoshino, Tomoaki Ando
  • Patent number: 10965235
    Abstract: An electric motor can include a stator including a plurality of air-gap wound coils supported by a yoke, and a rotor including a permanent magnet array. The air-gap wound coils can be impregnated with a resin containing a plurality of particles, such as ceramic nanoparticles or iron particles. A corresponding control system for an electric motor can include a boost converter, and a reconfigurable multilevel inverter.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: March 30, 2021
    Assignee: UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN
    Inventor: Kiruba Sivasubramaniam Haran
  • Patent number: 10951083
    Abstract: Embodiments relate to a stator unit, a stator, and a motor comprising same, the stator unit comprising: a unit stator core; an insulator disposed on the unit stator core; and a coil wound on the insulator, wherein the unit stator core comprises a main body formed so as to have a prescribed curvature with reference to the centre, and three teeth formed so as to protrude toward the centre from the main body, the main body comprising notches formed between the teeth. Thus mass productivity can be increased as a result of series winding using a coil on a unit stator core having three teeth arranged thereon.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: March 16, 2021
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Il Hwan An
  • Patent number: 10951101
    Abstract: A method of manufacturing an induction motor rotor assembly, the method includes the steps of: providing a rotor; machining a plurality of re-entrant slots axially along an outer surface of the rotor; positioning a sleeve concentrically over the outer surface of the rotor; applying a friction stir welding process to the sleeve along each re-entrant slot axially along the outer surface of the rotor to cause the sleeve material to plasticise and flow into the axial re-entrant slot to form an axial re-entrant slot bar; and providing an electrical connection at each of the opposing axial ends of the rotor between respective ones of opposing ends of each of the axial re-entrant slot bars to thereby form the induction motor rotor.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: March 16, 2021
    Assignee: ROLLS-ROYCE plc
    Inventors: James Emberton, Alexis Lambourne, John J A Cullen
  • Patent number: 10951096
    Abstract: A method of producing a rotating electric machine stator includes an insertion step, bending step, and pressing step. In the insertion step, two leg portions of each U-shaped coil wire of a stator coil are inserted into different slots, such that protruding portions as distal end portions of the leg portions protrude in parallel with an axial direction of the stator core. In the bending step, the protruding portion of a first leg portion is bent in a first circumferential direction of the stator core, at a proximal end portion of the protruding portion as a bending start point, from a condition where the protruding portion protrudes from the slot in parallel with the axial direction of the stator core. In the pressing step, a distal end of the protruding portion bent in the first circumferential direction is pressed toward its proximal end in a second circumferential direction.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: March 16, 2021
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Daisuke Mizushima, Yasuyuki Hirao, Hiroaki Takeda
  • Patent number: 10951098
    Abstract: A method of manufacturing an axial flux motor includes providing a stator; providing a rotor having a first external face and a second external face opposed and parallel the first external face; rotatably securing the rotor to the stator about a rotor center of rotation; providing a permanent magnet having a longitudinal axis thereof; fixedly securing the magnet to the rotor with the longitudinal axis positioned in a radial direction relative to the rotor center of rotation and so defining radially inward surface and an opposed radially outward surface, the magnet having a first face adjacent the first external face of the rotor and having a second face adjacent the second external face of the rotor; partially magnetizing the magnet by positioning a first magnetizing device adjacent the first face of the magnet; and magnetizing the magnet by positioning a second magnetizing device adjacent the second face of the magnet.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: March 16, 2021
    Assignee: REGAL BELOIT AMERICA, INC.
    Inventor: Subhash Marutirao Brahmavar
  • Patent number: 10938282
    Abstract: The method according to the invention is used to produce a coil winding (70) which can be inserted into the grooves of a stator or rotor of an electric machine. While using a winding template (26) and a wire handling device (14), the invention proposes carrying out a displacement process between a first and a second holding region (34, 36) even before the wires (32) are initially wound onto the winding template (26) in order to produce an inclined wire section (40) which is subsequently shaped into winding heads (42) by means of a rotating/winding process. The novel method offers the advantage that all of the wires (32) of a coil winding (70) can be processed simultaneously using a comparably simple winding device (110). The projection of the winding heads (42) over the stator can also be minimized.
    Type: Grant
    Filed: November 24, 2016
    Date of Patent: March 2, 2021
    Assignee: Schaeffler ELMOTEC STATOMAT GmbH
    Inventors: Sadik Sadiku, Keith Witwer
  • Patent number: 10935032
    Abstract: The present disclosure relates to a mounting system between two mounting elements which are designed as ring member and rotor of an electric motor, wherein, on one of the mounting elements, at least one catching hook is formed, and, on the other mounting element, at least one catching groove is formed, which, in the fastened state, engage in a positive-lock manner and directly in one another in a fastening manner and connect the ring member and the rotor releasably to one another. On one of the mounting elements, at least one resilient spring element is formed, which, in the fastened state of the ring member on the rotor, exerts a biasing force on the other mounting element which is directed opposite a holding force of the at least one catching hook.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: March 2, 2021
    Assignee: ebm-papst Mulfingen GmbH & Co. KG
    Inventor: Volker Hufnagel
  • Patent number: 10938284
    Abstract: The present invention relates to a method for producing an insulating element for a stator base body or a rotor base body or a single tooth base body, comprising the steps of: providing an insulating material, receiving or generating or retrieving processing data based on which the insulating material has to be processed in order to manufacture the insulating element, and processing the insulating material by means of a laser device according to the processing data for producing the insulating element from the insulating material, wherein the processing data define at least one interface for cutting the insulating material and/or at least one weakening site for weakening the insulating material, and wherein the processing comprises cutting the insulating material along the interface and/or weakening the insulating material along the weakening site.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: March 2, 2021
    Assignees: Robert Bosch GmbH, Aumann Espelkamp GmbH
    Inventors: Michael Huber, Christopher Ludwigs, Juergen Hagedorn
  • Patent number: 10931182
    Abstract: The invention relates to a method for the production of a component, of an electric machine, such as, for example, a stator, comprising a wire mat which is made of wire, preferably flat wire, comprising the following steps: aligning the wire, twisting the wire in at least some sections about its longitudinal axis, z-shaped angling of the wire, winding the wire, in particular winding the wire helically onto a carrier, transferring the wire mat thus obtained onto a mounting tool.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: February 23, 2021
    Assignee: GROB-WERKE GMBH & CO. KG
    Inventors: Korbinian Seidel, Ralf Rauscher, Günter Dreier, Simon Fendt, Tobias Wagner, Tobias Haggenmueller, Tobias Wegscheider
  • Patent number: 10931180
    Abstract: A method and an apparatus for manufacturing a rotor of an electric motor are provided to obtain an electric motor with high efficiency. To this end, a rotor is magnetized by using a magnetizing device. The rotor includes a rotor magnet disposed in the circumferential direction of a rotor shaft, and a position detecting magnet disposed side-by-side with the rotor magnet with respect to the axial direction of the rotor shaft. The magnetizing device includes a rotor-magnet magnetizing yoke and a position-detecting-magnet magnetizing yoke that generate two magnetic fields. The two magnetic fields each have unlike poles arranged alternately in the circumferential direction and have a phase difference relative to each other in the circumferential direction. A phase difference is thus provided between the poles of the rotor magnet and the poles of the position detecting magnet.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: February 23, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yusuke Maeshima, Yasumasa Takeuchi, Yuki Ohashi
  • Patent number: 10923989
    Abstract: A Brushless Direct-Current (BLDC) motor is provided for a power tool, including a stator, and a rotor pivotably arranged inside the stator. The rotor includes a rotor shaft, a rotor lamination stack mounted on the rotor shaft to rotate therewith, and at least one magnet. A bearing is mounted on the rotor shaft to support the rotor shaft. A mount is disposed adjacent the stator along a plane perpendicular to a longitudinal axis of the rotor shaft, the mount having a bearing support member intersecting the longitudinal axis of the rotor shaft and arranged to support the bearing therein. The mount further support hall sensors axially with respect to the rotor, the hall sensors arranged around a circumference of the bearing support to magnetically sense the at least one magnet.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: February 16, 2021
    Assignee: Black & Decker Inc.
    Inventors: Eric E. Hatfield, Earl M. Ortt
  • Patent number: 10923993
    Abstract: An alignment apparatus is configured to include an alignment mechanism. At least one of first legs or second legs of electric conductors are retained so as to be aligned in an arcuate shape or a circular shape by a plurality of holders that make up the alignment mechanism. Thereafter, the plurality of holders are rotated. Accordingly, the electric conductors, which are aligned in an arcuate or circular shape, are rotated and arranged on the same circumference. In other words, the electric conductors are aligned in an annular shape.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: February 16, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Shuhei Okuda, Kenichi Ohno, Kenichi Omagari
  • Patent number: 10916975
    Abstract: Disclosed herein are a motor assembly and a cleaner having the same. The motor assembly includes a rotor configured to rotate and a stator configured to electromagnetically interact with the rotor. The stator includes a pair of stator bodies disposed to be symmetrical to each other with the rotor in between, each stator body having at least two stator cores arranged in parallel to each other.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: February 9, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Keun Young Yoon, Young Kwan Kim, Kwang Soo Kim, Deok Jin Kim, Mohammad Ali, Byung Ryel In, Jong Jin Park, Myung Bae Bang
  • Patent number: 10910931
    Abstract: An electromagnetic coil is formed by winding a wire around a winding member of an insulator. The winding member is configured with a substantially polygonal shape. Further, in a winding step of winding the wire, which is supplied from a wire supply unit, around the winding member, when the wire reaches a corner portion of the winding member, a residual stress toward an outer side in the diametrical direction of the stator is imparted to the wire. Thereafter, portions of the insulative coating of the wire are subjected to fusion bonding.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: February 2, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yuichi Hosoda, Ryosuke Fukuchi
  • Patent number: 10898939
    Abstract: A punch processing method for a laminated iron core includes sequentially feeding the steel sheets to a mold; and performing a plurality of processes in the mold, the plurality of processes includes fixing the steel sheets being stacked to each other at a first fixing part that is positioned outside a closed curved line corresponding to an outermost periphery of the laminated iron core and a second fixing part that is positioned in a portion that finally serves as the laminated iron core; and performing punch processing on the outermost periphery of the laminated iron core while the steel sheets are stacked.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: January 26, 2021
    Assignee: JFE Steel Corporation
    Inventors: Kunihiro Senda, Masanori Uesaka, Yoshihiko Oda
  • Patent number: 10892670
    Abstract: A method for bonding electrical conductors is provided that is capable of suppressing a power source capacity when assembling a stator having a specific structure. First, coil pieces 9 are arranged in contact with bonding portions of a slot coil 5 inserted in a slot of a stator iron core 2 via a metal paste. Subsequently, an electrical current is applied using a pair of electrodes 11A and 11B in the axial direction (upward and downward in the figures) of the slot coil 5 while contact portions 15 between the slot coil 5 and the coil pieces 9 are pressed in an axial direction of the slot coil 5. As a result, electricity flows in the axial direction the coil piece 9 (a direction of an arrow X in the figures).
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: January 12, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kotaro Yoshida, Satonori Iura, Toru Eguchi, Kazuhide Matsuo, Takeshi Ueda
  • Patent number: 10886823
    Abstract: A first terminal portion of a first terminal wire of one divisional coil, and a second terminal portion of a second terminal wire of another divisional coil, extend from the entrance side or the bottom side of a slot so as to be directed upward in the axial direction and arranged side by side in the radial direction of a stator on the upper side in the axial direction of a stator core. The end of the first terminal portion and the end of the second terminal portion are joined to each other by a joining part. At least one of the first terminal portion and the second terminal portion leading to the joining part has an engagement portion for positioning the first terminal portion and the second terminal portion with each other in the circumferential direction and the radial direction.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: January 5, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji Kawamura, Naohiro Motoishi, Takatoshi Masuda
  • Patent number: 10886869
    Abstract: A control apparatus is applied to a vehicle including (i) a rotating electrical machine and (ii) a wheel speed sensor detecting a wheel speed. The control apparatus sets a rotation angle of the rotating electrical machine based on an estimated value of the rotation angle which is estimated based on a detection value of the wheel speed sensor.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: January 5, 2021
    Assignee: DENSO CORPORATION
    Inventors: Minoru Ishida, Naoki Katayama, Tsubasa Sakuishi, Yuki Takahashi
  • Patent number: 10855125
    Abstract: A motor includes a stator including wound multiphase coils and stator slots that accommodate the multiphase coils, and a rotor provided at an inner side of the stator. Poles are provided in a direction of rotation, and sets of flux barriers are provided on the rotor, each of the poles respectively corresponding to a set of the flux barriers. A ratio between a total number of the stator slots and a product of a total number of poles of the rotor and a phase number of the multiphase coils is a non-integer. With the structure of the motor, a torque ripple is reduced while an output torque is kept unchanged.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: December 1, 2020
    Assignee: NIDEC CORPORATION
    Inventors: Sheng-Chan Yen, Hsin-Nan Lin, Yu-Wei Hsu, Cheng-Tsung Liu
  • Patent number: 10855128
    Abstract: Described is a method for producing a stator, in particular for electric motors. In a first step, a plurality of flexible electrical conductors are combined to form a conductor bundle. In a second step, two end regions of the conductor bundle are pressed in such a way that a central region of the conductor bundle formed between the two end regions remains flexible. Also described is a corresponding stator.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: December 1, 2020
    Inventors: Johannes Lange, Tobias Engelhardt, Stefan Schmitz, Axel Heitmann, Jan Nägelkrämer, Stefan Oechslen, Daniel Knoblauch, Wolfgang Thaler, Stefan Heinz
  • Patent number: 10855120
    Abstract: A rotating electrical machine includes a frame, and a stator core fixed to an inner peripheral surface of the frame and including a plurality of split cores disposed in a peripheral direction. Each of the plurality of split cores includes a groove disposed along an axial direction on a central position in the peripheral direction on an outer peripheral surface of the split core, and a first protrusion disposed on a bottom of the groove and protruding outward in a radial direction.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: December 1, 2020
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Takeo Suzuki, Kenichi Hirata, Hiroshi Koga, Motomichi Ohto, Yosuke Shirozu
  • Patent number: 10848024
    Abstract: Provided is a stator for a rotary electric machine capable of fixing a stator core and a coil while preventing internal contamination of the rotary electric machine. A stator (5) for a rotary electric machine includes a stator core (11) having teeth (21) and slots (23) alternately in a circumferential direction, a coil (13) mounted on the stator core (11), and an insulating layer (35) and a foamed adhesive layer (37) disposed between an inner circumferential surface of the slot (23) and the coil (13). The formed adhesive layer (37) is disposed such that an end portion of at least one side thereof in an axial direction of the stator core (11) is disposed further inside than an end surface (11a) of a side of the stator core (11) in the axial direction.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: November 24, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventor: Tadashi Yamaguchi
  • Patent number: 10840750
    Abstract: There is provided a compressor motor in which a teeth member and a yoke member are bonded while inhibiting deformation of bridge portions and which is capable of decreasing drop of torque due to a leakage magnetic flux. A stator is constituted of a teeth member 26 in which inner end portions of adjacent teeth 27 are continuous in a bridge portion and on which wires are wounded, and a yoke member 28 bonded to an outer side of the teeth member to form a magnetic path, the yoke member includes press-fitting concave regions 32 which are opened inwardly and into which outer end portions of the teeth are press-fitted, and inner side surfaces 32A of the press-fitting concave regions which face each other possess projecting shapes, respectively, and both side surfaces 27B of each of the outer end portions of the teeth are formed in a recessed shape which matches the shape of the inner side surfaces of the press-fitting concave regions.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: November 17, 2020
    Assignee: SANDEN HOLDINGS CORPORATION
    Inventors: Noriyuki Kobayashi, Takahiro Ikeda
  • Patent number: 10833549
    Abstract: In the armature winding of a rotary electric machine, in a series coil portion group, the numbers of turns of conducting wire in the coil portions that have an electrical angular phase difference of ?k that satisfies ?1<?k?m are different than the numbers of turns of conducting wire in the ?1 and ?m coil portions, and are also different than the numbers of turns of conducting wire in the coil portions that are adjacent to the ?k coil portions on two sides in a circumferential direction of the stator core, and phases of the ?k coil portions are also different than phases of each of the coil portions that are adjacent to the ?k coil portions on the two sides in the circumferential direction.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: November 10, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kodai Okazaki, Masatsugu Nakano, Kazumasa Ito, Yu Hirotani, Hiroko Ikeda, Koji Kawamura
  • Patent number: 10826340
    Abstract: A rotor for a synchronous motor includes teeth arranged at regular intervals, project from a rotor core in the radial direction, and taper in a cross-section in the direction of the rotor core. The rotor also includes tangentially magnetized magnets that are arranged in gaps between the teeth and are trapezoidal in cross-section. The teeth are connected via a flexible joint to the rotor core, and the teeth are deflected in the tangential direction such that in every other gap between two teeth, first magnets rest against outer stops at the ends of the teeth facing away from the rotor core.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: November 3, 2020
    Assignee: ETEL S.A.
    Inventors: Alfred Gause, Alessandro Fasolo, Nicolay Komarevskiy, Johann Pourchet