Coil Retainers Or Slot Closers Patents (Class 310/214)
  • Patent number: 10536061
    Abstract: A method for manufacturing a stator of a rotary electric machine includes: assembling an insulator and a stator coil to a tooth; and after assembling, pouring a liquid adhesive into an opening of the insulator from an outer side of the stator coil so as to fix the stator coil to a stator core.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: January 14, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yukio Tsuchiya, Hiroyuki Hattori
  • Patent number: 10523079
    Abstract: A rotor assembly (40) for an electric machine including a core (42) having at least one post (44) about which a winding may be wound, and a cap (52) coupled to the post (44) and having a portion overlying a winding (46), wherein the cap (52) comprises a plurality of laminations and the core (42) does not comprise a plurality of laminations.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: December 31, 2019
    Assignee: GE Aviation Systems LLC
    Inventors: Hao Huang, Xiaochuan Jia, Paul James Wirsch, Jr.
  • Patent number: 10476336
    Abstract: A stator connected to a power supply includes a plurality of wound segment assemblies, each wound segment assembly comprising a segmented corepack stack with a phase winding wound around said segmented corepack stack and a power printed circuit board assembly comprising a printed circuit board (PCB). The stator also includes phase wires connected to said phase winding, said phase wires being connected to said PCB and said PCB being connected to said power supply.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: November 12, 2019
    Assignee: GOODRICH CONTROL SYSTEMS
    Inventor: Kedar Pithwa
  • Patent number: 10439455
    Abstract: A tooth groove is provided at a border portion between a tooth body portion and a protrusion. The angle between a tooth body portion lateral face which is a lateral face in the circumferential direction of the tooth body portion and a tooth body portion stop portion which is a face, of the tooth groove, continued from the tooth body portion lateral face is the right angle or an acute angle. The protrusion is rotated toward the outer side in the circumferential direction, to bring a protrusion stop portion into close contact with the tooth body portion stop portion, the protrusion stop portion being an outer-circumferential-side lateral face of the protrusion, thereby forming a shoe in a tooth.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: October 8, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Aiko Nakano, Atsushi Sakaue, Tatsuro Hino, Kazunori Muto, Yoshihiro Harada, Shinkichi Sawa, Masashi Nakamura
  • Patent number: 10432053
    Abstract: A stator includes an annular stator core, a stator winding, and an insulating sheet member. In the stator core, slots are circumferentially arrayed. The stator winding includes conductor segments having oblique portions formed by open end portions being circumferentially twisted. The open end portions are inserted into the slots from one of two axial-direction sides and extend towards another one. The insulating sheet member is interposed between an inner wall surface of the slot and the conductor segment. The insulating sheet member is rolled into a cylindrical shape along the inner wall surface of the slot, and includes an overlapping portion and a slack portion. In the overlapping portion, two circumferential-direction end portions overlap each other. The overlapping portion is disposed on one of two radial-direction sides of each of the slots. The slack portion is disposed on another one of two radial-direction sides of each of the slots.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: October 1, 2019
    Assignee: DENSO CORPORATION
    Inventor: Akito Tamura
  • Patent number: 10424985
    Abstract: The invention relates to a method for producing a rotor and/or a stator of a dynamoelectric rotary machine by means of the following steps: —producing pre-formed coils from an integral electrically conductive material or pre-insulated or coated electrically conductive wires, —fixing spacers to the pre-formed coil at predefinable intervals, —inserting the pre-formed coil, which is provided with spacers, into slots in a laminated core of a stator or rotor, —making contact with the individual pre-formed coils to form groups of coils and forming a winding system of a rotor and/or stator in accordance with a predefined circuit plan, —insulating the pre-formed coils or the winding system in the slots by complete encapsulation, in particular by complete vacuum encapsulation.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: September 24, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: André Grübel, Bernhard Klaussner, Dieter Schirm, Matthias Übler
  • Patent number: 10396613
    Abstract: An armature provided with: plural core configuration members that configure an armature core and are segmented from each other on progression along the circumferential direction of the armature core; plural insulators that each include plural insulating portions mounted to the core configuration members and a coupling portion that couples the plural insulating portions together; plural windings that respectively include plural winding portions, wound on the core configuration members with the insulating portions interposed between the winding portions and the core configuration members, and a crossing wire that connects the plural winding portions together; a fitting portion that couples together adjacent core configuration members out of the plural core configuration members; and an exposing portion that is formed to the plural insulators and exposes the fitting portion when viewed along the axial direction of the armature core.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: August 27, 2019
    Assignee: DENSO CORPORATION
    Inventors: Hidenori Kanda, Shigeaki Kageme
  • Patent number: 10374479
    Abstract: A motor is provided. The motor includes: a rotor; a stator inside which the rotor is rotatably disposed and including a plurality of teeth protruding toward the rotor; a plurality of insulating films disposed in respective slots formed between the plurality of teeth to insulate a coil wound around the plurality of teeth from the respective teeth; and insulating members covering upper and lower portions of the stator, respectively, wherein the plurality of insulating films are fixed by the plurality of teeth and the insulating members.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: August 6, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-bum Lee, Hong-jung Kim, Gyeong-don Kim, Young-ju Ryu, Ji-hoon Lee, Jae-jin Cho, Jong-hyun Choi, In-cheol Hwang
  • Patent number: 10367390
    Abstract: A stator capable of preventing the displacement of insulators and securely positioning the insulators at given positions. A stator includes a stator core formed with slots; a coil wound around the stator core, the coil comprising a coil side and a coil end, the coil end arranged outside the slot; and insulators provided in the slots. Each insulator includes a coil side-insulation part arranged between wall surfaces of a slot and a first coil side and electrically insulating the wall surfaces from the first coil side; and a coil end-insulation part formed in one piece with the coil side-insulation part and arranged outside the first slot. The coil end-insulation part is arranged between a first coil end and a second coil end and electrically insulates the first coil end from the second coil end.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: July 30, 2019
    Assignee: FANUC CORPORATION
    Inventor: Shinichi Kinoshita
  • Patent number: 10361605
    Abstract: A method and a device for protecting an electric motor in a pod unit for propulsion of marine vessels against shaft bending shocks when the blades of the pod propeller hit ice blocks or other hard objects, said motor having a drive shaft, a rotor and a stator, said shocks tending to momentarily bend the drive shaft (3) to such an extent that the rotor (41) will come into contact with the stator. The rotor is prevented from coming in detrimental contact with the stator by providing at least two members, which together form a radial plain bearing having mating arcuate bearing surfaces, which during normal operation of the motor are spaced from one another by a gap and come in contact with one another only at extreme loads with short durations.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: July 23, 2019
    Assignee: Rolls-Royce Akteibolag
    Inventors: Andreas Eriksson, Anders Lobell, Per Nahnfeldt, Gunnar Styrud
  • Patent number: 10333366
    Abstract: A slot-closing device for closing a slot in a stator or a rotor of an electric machine includes a closure element for closing the slot. A closure element for closing the slot contains a ferromagnetic material, and has a predetermined bending section along a longitudinal extension direction of the closure element, such that two leg portions disposed at an obtuse angle of less than 180° to one another are connected by the bending section. An adhesive layer designed to harden when heated is disposed on edges of the two leg portions.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: June 25, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: André Grübel, Dieter Schirm
  • Patent number: 10267319
    Abstract: A blower includes a housing, and an impeller and a motor received in the housing. The motor drives the impeller to rotate. The motor includes a stator and a rotor. The stator includes a stator core and windings wound around the stator core. The stator core includes a yoke and teeth extending from the yoke. A distal end of each of the teeth forms a tooth tip, with a slot opening formed between each two adjacent tooth tips. The rotor includes a permanent magnet forming a plurality of magnetic poles. The stator and the rotor define an air gap therebetween. A circumferential width of the slot opening is equal to or less than two times of a radial width of the air gap.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: April 23, 2019
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Jun Jie Chu, Fu Ping Zhang, Yan Fang Zhi
  • Patent number: 10218238
    Abstract: A slot-closing device for closing a slot in a stator or a rotor of an electric machine includes a closure element which contains a ferromagnetic material. An adhesive layer disposed on the closure element is designed to expand and harden when heated. The adhesive layer contains a thermally activatable blowing agent configured as an expansion element which contains a closed cavity filled with gas. The cavity is partially enclosed by a thermoplastic resin in the expansion element.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: February 26, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: André Grübel, Dieter Schirm
  • Patent number: 10193405
    Abstract: In the rotary electric machine, bus-bar lead terminals of bus bars, which are held by a connection component, are formed in such a way that the bus-bar lead terminals are protruded from the bus bars to an axis direction of a stator, and a plurality of bus-bar storage grooves are formed by using a plurality of partitions which are concentrically arranged in a diameter direction of the stator via gaps, and in the plurality of partitions, lengths, in the axis direction, of the most outer circumference partition, which is positioned at the most outer circumference side in the diameter direction, and the most inner circumference partition, which is positioned at the most inner circumference side in the diameter direction, are longer than lengths, in the axis direction, of a plurality of middle partitions, which are positioned between the most outer circumference partition and the most inner circumference partition.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: January 29, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Naoki Ohashi, Ryuichi Kitora
  • Patent number: 10097059
    Abstract: A coil support structure including a coil spacer, a yoke spacer, and a support formed between the coil spacer and the yoke spacer. And the support has laterally protruding parts.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: October 9, 2018
    Assignee: Hitachi, Ltd.
    Inventors: Makoto Imura, Takayuki Koyama, Shigeki Nakae, Motonobu Iizuka, Masanori Matsumoto, Hideyuki Ootaka
  • Patent number: 10044240
    Abstract: According to an embodiment of the present invention, a three phase motor in which a structure for preventing an electrical short circuit is applied includes a stator including a base portion having a hollow formed therein and a plurality of winding portions extending from the base portion toward the hollow and formed apart a predetermined distance from each other; a rotor having a plurality of magnets inserted therein and disposed in the hollow apart from ends of the winding portions; and an insulation sheet disposed between the winding portions abutting each other to prevent an electrical short circuit among the coils wound around the winding portions abutting each other.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: August 7, 2018
    Assignee: MANDO CORPORATION
    Inventors: Taesik Kim, Mazharul Chowdhury, Mohammad Islam, Scott Blehm
  • Patent number: 10033239
    Abstract: An armature for a rotating electric machine is provided. The armature includes a wedge that prevents separation of coils by supporting the coils disposed at left and right sides in a slot while closing an opening in the slot in which the coils are wound is provided. The wedge includes a body portion that is inserted into the slot, and has a “V” shape. Both ends of the body portion are coupled to latch grooves adjacent to a core, and separation prevention portions form bent regions at both ends of the body portion and are integrally connected to the body portion. The separation prevention portions are arranged adjacent to each other in the slot, and support the body portion.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: July 24, 2018
    Assignee: Hyundai Motor Company
    Inventor: Hong Seok Yang
  • Patent number: 10027196
    Abstract: An electric tool includes a brushless motor having a plurality of phases, the brushless motor. The brushless motor includes a plurality of stator coils connected in parallel with each of the plurality of phases, and a plurality of crossover wires, each of the crossover wires being configured to electrically connect the plurality of stator coils for each of the plurality of phases to each other. The plurality of crossover wires for the plurality of phases are electrically connected to each other.
    Type: Grant
    Filed: February 14, 2015
    Date of Patent: July 17, 2018
    Assignee: HITACHI KOKI CO., LTD.
    Inventors: Kenichirou Yoshida, Shinji Kuragano
  • Patent number: 10020695
    Abstract: A motor stator device with simple coil-winding structure is disclosed. The motor stator device includes an insulating base comprising an outer ring base, an inner ring base and a connection base, the outer ring base and the inner ring base alternatively forming outer ring openings, inner ring openings, outer ring sinks and inner ring pillars, the connection base being provided to be wound with a metal coil; a plurality of stator segments being positioned on the insulating base; and a plurality of segment connectors being positioned on the outer ring sinks between the insulating base and the stator segments and having a base part and an extension part opposite to the base part, the extension part being integrally extended from the base part and toward the motor rotor to get close to the inner ring pillar next to the motor rotor, so as to decrease the cogging torque.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: July 10, 2018
    Assignee: ABLE ENTERPRISE CO., LTD.
    Inventor: Yen-Peng Chuang
  • Patent number: 9991756
    Abstract: A stator for a motor of a compressor includes a stator core, insulator, coil, slot insulator, and inter-coil insulator. The stator core has a plurality of tooth portions arrayed circumferentially. The insulator is fitted to axial end faces of the stator core. The coil is wound on the tooth portions. The slot insulator is placed within slot portions that are spaces between circumferentially neighboring ones of the tooth portions, and which are interposed between the stator core and the coil. The inter-coil insulator is placed between circumferentially mutually neighboring windings of the coil. The inter-coil insulator is sheet shaped and folded over a width equal to double a sheet thickness at a folding-bottom portion extending along an axial direction. The folding-bottom portion is positioned on a distal end side of the tooth portions. Movement of the folding-bottom portion in a radial direction toward the rotor is restricted.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: June 5, 2018
    Assignee: Daikin Industries, Ltd.
    Inventors: Akinobu Ishizaki, Hidemi Tanji, Keiji Aota, Akio Mutou
  • Patent number: 9929612
    Abstract: A new rotor for a rotating electric machine assuring outstanding durability and reliability against vibration and facilitating equalization of resistances among a plurality of rotor coils, while allowing the leading ends of a plurality of lead wires to be disposed so as to congregate in one area, is provided. A plurality of stator coils 102 wound at a cylindrical stator core 101 each include leader portions led out from one of two ends of a slot along the axial direction and extending astride a plurality of slots. Lead wires 300 each formed at one end of a stator coil 102 are disposed so that their leading ends, oriented in the same direction, congregate in a single area. In a leader portion where a lead wire 300 is located, a turnback portion 400, made to turn back with an angle equal to or greater than 90° from an inclining wire portion 113, which is led out with an inclination along a predetermined direction from the slot, is formed.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: March 27, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Tomohiro Fukuda, Takahiro Ohmori, Takashi Genmoto, Kenichi Nakayama, Hisaya Shimizu
  • Patent number: 9929614
    Abstract: A motor includes a shaft, a rotor magnet, an armature, an upper bracket, a lower bracket, and a fixing member. An insulator includes magnetic pole tooth insulating portions, each of which covers a separate one of magnetic pole teeth, and a core back insulating portion configured to cover at least portions of upper and lower end surfaces of a core back. A stator core includes a fixing member arranging portion. The core back insulating portion includes a core back insulating projecting portion configured to project in an axial direction away from a surface covering the core back, and including a radially inner surface located radially inward of a radially inner end of the fixing member arranging portion. The core back insulating projecting portion includes a cut portion at a position radially opposed to the fixing member.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: March 27, 2018
    Assignee: NIDEC CORPORATION
    Inventors: Kazuya Kitaji, Keizo Furukawa, Tomoya Uchimura, Yusuke Watanabe
  • Patent number: 9893594
    Abstract: Provided is an armature for a rotating electrical machine, which is capable of improving heat dissipation performance of an edgewise coil to enhance efficiency of the rotating electrical machine. The armature for a rotating electrical machine includes: a core including a yoke section and a tooth section that protrudes from the yoke section; an edgewise coil to be inserted onto the tooth section through intermediation of an insulating member, the edgewise coil being formed by winding a rectangular wire having a rectangular conductor cross-section through edgewise bending; and a heat transfer member filled into a gap between the tooth section and the edgewise coil. The armature has different gaps formed at two regions between the tooth section and a long side of the edgewise coil.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: February 13, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinichiro Yoshida, Shuichi Tamura, Masaya Inoue, Akihiro Yamamura, Koichi Ojima, Shogo Okamoto, Yutaro Shirai
  • Patent number: 9859765
    Abstract: A winding insulation structure of a stator of an electromagnetic motor is provided, in which windings are wound inside slots of a stator iron core of the electromagnetic motor formed of a stator and a rotor with an insulation member therebetween, and in which an insulation sheet insertion portion for inserting an insulation sheet is formed between the stator iron core and the insulation member on a slot opening portion side of the stator iron core.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: January 2, 2018
    Assignee: Sanyo Denki Co., Ltd.
    Inventors: Kazuhiro Yoda, Masaaki Ohashi, Shogo Yoda
  • Patent number: 9847688
    Abstract: An insertion groove is disposed on a tubular portion overlapping portion that is overlapped with an inner circumferential surface of a tubular portion of the stator core. Inter-coil insulating bodies that are disposed between a plurality of stator coils include a groove inserted portion. The groove inserted portion includes: a first inserted portion that can be inserted inside the insertion groove when the insulating film is in a bent and folded state; and a second inserted portion that is contiguous to the first inserted portion, a shape of a visible outline of a cross section of the second inserted portion being different than that of the first inserted portion. The second inserted portion generates a stronger elastic force of recovery than the first inserted portion when the groove inserted portion is inserted into the insertion groove.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: December 19, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yutaka Hirota, Akira Hashimoto, Kazuhiko Boku
  • Patent number: 9774224
    Abstract: Disclosed is a stator of an EPS motor, the stator including a stator core including a plurality of teeth protrusively formed toward a center of an inner circumferential surface, a plurality of coils wound on the teeth at a predetermined counts, an insulator coupled to an upper surface and a bottom surface of the stator core to insulate the coil from the stator core, and an insulation tube situated nearest to a coil wound on an adjacent stator core and inserted into a coil wound on an outmost side of the teeth.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: September 26, 2017
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Hyunseop Kim, Byungyong Kim
  • Patent number: 9748822
    Abstract: A core for an electrical machine includes a core body, a winding, and a heat sink. The core body defines circumferentially offset winding slots. The winding is seated within the winding slots and has an endturn proximate the end of the core body. The heat sink is embedded in the winding endturn.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: August 29, 2017
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Debabrata Pal
  • Patent number: 9735642
    Abstract: A rotor for a rotating electric machine includes a plurality of pole teeth supporting an excitation winding, grooves respectively formed between the pole teeth, and wedges provided in the grooves, each wedge having a concave shape with a bulge oriented towards the inside of the rotor.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: August 15, 2017
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Michael Bulatow, Knut Welke
  • Patent number: 9685833
    Abstract: A rotor for a rotating electrical machine may include a number of pole teeth which carry a field winding, slots formed between the pole teeth, slot wedges provided in the slots, and separators arranged in the slots, the separators extending, starting from the slot wedges, between the windings in a direction toward a slot base.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: June 20, 2017
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Michael Bulatow, Knut Welke
  • Patent number: 9653958
    Abstract: A wedge for use in a generator rotor includes a wedge body extending for an axial length and having a generally triangular cross-section, a first side of the wedge body extending for the axial length of the wedge body, a second side of the wedge body extending for the axial length of the wedge body and having a generally flat surface, a third side of the wedge body extending for the axial length of the wedge body and having a generally flat surface, a first arm extending circumferentially away from the wedge body at an interface between the first side and the second side and extending axially along the wedge body, and a second arm extending circumferentially away from the wedge body at an interface between the first side and the third side and extending axially along the wedge body.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: May 16, 2017
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Dhaval Patel, Eric A. Brust, Brady A. Manogue, Kevin J. Koester, Glenn W. Hufstedler, Shaun Maconaghy, Christine Lynn Ooyen
  • Patent number: 9634539
    Abstract: A radial magnetic bearing for magnetic bearing of a rotor has a stator which includes a magnetically conductive stator element, arranged circulating around a rotor. The stator element has recesses running in the axial direction of the stator element in which electrical lines from coils are arranged, wherein magnetic fields can be generated by the coils which hold the rotor suspended in an air gap arranged between the rotor and stator. A softer progression of the components of magnetic flow density in the radial direction is achieved by design measures on the transitions from one magnetic pole to the next magnetic pole, which results in a reduction of the eddy currents induced in the rotor.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: April 25, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Robin Deits, Matthias Lang
  • Patent number: 9634526
    Abstract: A rotor for a rotating electric machine includes a rotor sheet stack arranged on a rotor shaft, and at least one metallic functional component made of a material comprising iron and also chromium in a proportion of at least 18% and at most 19% by weight and optionally nickel in a proportion of at least 12% and not more than 13% by weight.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: April 25, 2017
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Michael Bulatow, Knut Welke
  • Patent number: 9614407
    Abstract: A rotary electric machine stator includes an electric power distributing apparatus that includes: respective phase busbars that are electrically connected to respective phase coils; a resin holder that is disposed so as to surround the respective phase busbars, and that includes a partitioning wall portion that insulates between adjacent busbars, the resin holder including an opening portion that opens outward in an axial direction of the stator core; and a resin cover that covers the opening portion. A rib that is bent radially is formed on a radially outer edge portion of the opening portion of the resin holder.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: April 4, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventor: Ken Nishikawa
  • Patent number: 9614406
    Abstract: A stator for use in an electric motor is disclosed. The stator comprises an annular core, a plurality of wedges, and a plurality of wedge-retaining structures. The core includes a plurality of arcuately spaced apart teeth. Each of the teeth includes a generally radial leg and a head projecting from the leg to present a pair of arcuately spaced apart head ends. A slot opening is defined between the opposed head ends of each adjacent pair of teeth. Each of the wedges is received within a corresponding slot opening. Each wedge-retaining structure is at least in part fixed relative to the core and cooperates with a respective one of the wedges to compressibly retain the respective wedge between the head ends.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: April 4, 2017
    Assignee: Nidec Motor Corporation
    Inventors: Philip S. Johnson, Daniel E. Hilton, Keith I. Hoemann, Daniel E. Bailey
  • Patent number: 9601961
    Abstract: The present disclosure provides an armature of a rotating electric machine. The armature of the rotating electric machine includes a wedge that is configured to close an opening of a slot around which coils are wound and support the coils disposed to a left side and a right side of the slot to prevent the coils from seceding from a core. The wedge includes a main plate that has a substantially V-shaped section. In addition, a support plate of the wedge is coupled with the main plate within the main plate and is configured to support the main plate in directions in which the main plate spreads to maintain a shape of the main plate.
    Type: Grant
    Filed: December 14, 2014
    Date of Patent: March 21, 2017
    Assignee: Hyundai Motor Company
    Inventors: Jungwoo Lee, Young-Jin Seo, Hong Seok Yang
  • Patent number: 9537364
    Abstract: In an expansion sheet for a rotary electric machine that has a thermal expansion property and is to be arranged between a core and a coil conductor in a slot in the rotary electric machine, in which the coil conductor is housed in the slot formed in the core, the expansion sheet has a first surface and a second surface and includes: a first surface-side portion; and a second surface-side portion that is closer to the second surface than the first surface-side portion. An amount of volume increase, caused by heating, of the first surface-side portion is higher than an amount of volume increase, caused by the heating, of the second surface-side portion.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: January 3, 2017
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Takeshi Ishida, Takahiro Tsukamoto
  • Patent number: 9537360
    Abstract: The invention relates to a rotor for a rotary electric machine, extending along a longitudinal axis and including: an assembly of electrical sheets forming projecting poles, two projecting poles defining an interpolar region therebetween; and at least two internal cooling channels formed in the assembly of electrical sheets in at least one interpolar region.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: January 3, 2017
    Assignee: MOTEURS LEROY-SOMER
    Inventor: Alexis Dutau
  • Patent number: 9523368
    Abstract: A fan includes a fan frame, a rotor, a stator module and a protection structure. The fan frame has a base seat and the stator module is disposed on the base seat. The stator module includes a silicon steel sheet assembly having multiple splits and multiple outer faces. The rotor is disposed in the fan frame corresponding to the outer faces of the silicon steel sheet assembly. The protection structure includes multiple posts corresponding to the splits of the silicon steel sheet assembly. The posts are welded with the splits by means of laser welding.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: December 20, 2016
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Bor-Haw Chang, Shu-Fan Liu, Kuo-Chen Chang
  • Patent number: 9506473
    Abstract: A fan includes a fan frame, a rotor, a stator module and a protection structure. The fan frame has a base seat and the stator module is disposed on the base seat. The stator module includes a silicon steel sheet assembly having multiple splits and multiple outer faces. The rotor is disposed in the fan frame corresponding to the outer faces of the silicon steel sheet assembly. The protection structure includes multiple posts corresponding to the splits of the silicon steel sheet assembly. The posts are welded with the splits by means of laser welding.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: November 29, 2016
    Assignee: Asia Vital Components
    Inventors: Bor-Haw Chang, Shu-Fan Liu, Kuo-Chen Chang
  • Patent number: 9479021
    Abstract: A stator of a rotary electric machine includes an annular stator core with a plurality of slots arranged in a circumferential direction, a stator winding formed by three phases of phase windings wound around the slots, and neutral wires for commonly connecting ends of the phase windings together in star-connection. Each of the phase windings has two partial windings that are electrically connected in parallel, ends of at least two sets of the partial windings formed by combining two partial windings among the total of six partial windings in different phases and the ends of the neutral wires are connected electrically, and the partial windings connected to both ends of each neutral wire include all the phases.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: October 25, 2016
    Assignee: DENSO CORPORATION
    Inventor: Akito Tamura
  • Patent number: 9444298
    Abstract: A bar wound stator includes a stator core defining a plurality of slots. Bar-type conductors are disposed within each slot. Each slot includes a slot liner and an insulator cap. Each slot liner includes an end portion disposed against an inner wall surface, and side portions disposed against a first wall surface and a second wall surface respectively. Each insulator cap includes a base portion disposed against an outer wall surface, and side portions disposed against the first wall surface and the second wall surface respectively. The side portions of the insulator cap in each slot overlap the side portions of the slot liner in each slot along the first wall surface and the second wall surface respectively. Each slot includes a recessed feature in each of the first wall surface and the second wall surface to accommodate the overlapping side portions of the insulator cap and the slot liner.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: September 13, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Edward L. Kaiser, Paul Buchholz, Khwaja M. Rahman
  • Patent number: 9444299
    Abstract: A spacer for mechanically stabilizing and electrically insulating an end winding in an electric motor includes an elastic nose having a free end. A planar, electrically insulating sheet is integrally formed at an end of the nose located opposite the free end. Such spacers are used in an electric motor having an iron core, whose teeth are surrounded by coils whose end windings laterally project from the iron core. The spacers are press-fitted inside openings formed by the end windings and the teeth, so that the end windings are covered by the sheet of the press-fitted spacer in the direction of an air gap of the electric motor in each case.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: September 13, 2016
    Assignee: Etel S.A.
    Inventors: Guillaume Mougin, Christophe Dehouck, David Panet
  • Patent number: 9343944
    Abstract: A stator for an electric rotary machine includes: a stator core having a plurality of slots; and segmented coils of a plurality of phases, wherein: the segmented coils of a plurality of phases have pluralities of coil bars which are inserted individually in the plurality of slots in the stator core and which extend substantially in a straight line and pluralities of connection coils which connect together the coil bars of the same phase to thereby make up extending portions; and the coil bars are fixed in place individually in the slots in the stator core in such a state that the coil bars each are covered by an insulation material.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: May 17, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takeki Kishi, Tomotaka Iki
  • Patent number: 9252637
    Abstract: A coil retainer for a rotor includes a flat body and a longitudinal spine. The flat body has a first thickness and the longitudinal spine has a second thickness greater than the first thickness. The coil retainer may also include a central rib, which has a third thickness. The central rib runs laterally relative to the flat body and the third thickness of the central rib is greater than the first thickness.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: February 2, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Micah Joel Fuchs, Edward L. Kaiser
  • Patent number: 9130423
    Abstract: Magnets may be embedded in first recessed portions of a rotor core, and at least one stopper is each attached to an axial end of the rotor core. The rotor core may include second recessed portions each including a locking portion arranged to project inward therein. The stopper may include a base portion arranged to close the first recessed portions, and elastically deformable hook portions each arranged to be inserted into a separate one of the second recessed portions to be engaged with the locking portion. The rotor core may include first plates and second plates placed upon one another. Each first plate may include first locking elements each defining an opening, while each second plate may include second locking elements each defining a larger opening. The locking portions may be defined by arranging the second plates axially inward and placing the first plates upon the second plates.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: September 8, 2015
    Assignee: NIDEC CORPORATION
    Inventor: Yoshihiro Uchitani
  • Patent number: 9130417
    Abstract: An electric machine includes a rotor, a stator housing and a winding assembly surrounding the rotor. The winding assembly is arranged in the stator housing and has an axially extending effective region in which the winding assembly is set up to interact electrodynamically with the rotor. The stator housing has a peripheral opening slot on the side facing the rotor. The opening slot corresponds in its axial extent to the axial extent of the effective region of the winding assembly and in which an electrically non-conductive can of the electric machine is inserted. The can is sealed off with the stator housing in such a manner that the winding assembly is hermetically separated from the rotor. The can extends axially only on the effective region of the winding assembly.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: September 8, 2015
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Ralf Bode
  • Patent number: 9071106
    Abstract: The present invention relates to armature windings for DC electrical machines, and in particular to those that use electronic commutation and have relatively few slots per pole-pair. The armature windings are particularly well suited for use with rotating DC electrical machines that have a large diameter and a large number of poles such as those that might be directly coupled to the turbine blade assembly of a wind turbine. The armature winding is arranged in relation to the magnetic field generated by a field winding or by permanent magnets such that a number of commutation events during the time taken for the relative movement between the armature and the field system of one pole-pair is much larger than the number of coils per pole-pair.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: June 30, 2015
    Assignee: GE Energy Power Conversion Technology Limited
    Inventor: Paul Eaton Clark
  • Patent number: 9059621
    Abstract: The present invention provides an electric rotating machine capable of providing a high quality and efficient machine operation with reduced oscillation and noise by lowering torque ripple. The electric rotating machine includes a stator having a plurality of teeth facing a rotor, and a plurality of slots providing spaces for winding coils around the teeth. The rotor has a pair of permanent magnets embedded therein and located in a “V” shape configuration so as to let magnetic force act on the teeth such that the rotor within said stator is driven to revolve by reluctance torque and magnet torque. An outer diameter ratio ? of an outer diameter Dr of the rotor to an outer diameter Ds of the stator falls in a range from 0.61 to 0.645.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: June 16, 2015
    Assignee: SUZUKI MOTOR CORPORATION
    Inventor: Masahiro Aoyama
  • Patent number: 9048710
    Abstract: Embodiments of the invention provide an electric machine module. The module can include a housing, which can define a machine cavity. In some embodiments, an electric machine can be positioned within the machine cavity. In some embodiments, the electric machine can include a stator assembly including potted stator end turns. An end turn member can be positioned within the machine cavity and can include a radially inward flange and a radially outward flange axially extending from a central region. The end turn member is configured and arranged so that the flanges are substantially adjacent the stator end turns. The end turn member can include at least one second member aperture disposed through a portion of the central region.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: June 2, 2015
    Assignee: Remy Technologies, LLC
    Inventors: Bradley D. Chamberlin, James J. Ramey, Alex S. Creviston
  • Patent number: 9046081
    Abstract: A wind turbine having a wind turbine tower with a nacelle; a wind turbine rotor hub with at least one rotatably mounted wind turbine blade; a shaft coupled to the wind turbine rotor hub and a generator. The generator has a rotor having at least one superconducting rotor coil arranged rotatably relative to a stator having at least one stator coil. The rotor is arranged in a rotor housing and the stator is arranged in a stator housing, the housings being separated by a rotor-stator gap. The stator housing has a stator inner shell and a stator outer shell connected together by at least one stator housing end plate. The stator inner shell has a first inner shell element attached to a stator iron that is connected to a second inner shell element. A pressure plate is attached to the second inner shell element and the stator outer shell.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: June 2, 2015
    Assignee: Envision Energy (Denmark) ApS
    Inventors: Anders Varming Rebsdorf, Mogens Christensen