Slot Liners Patents (Class 310/215)
  • Patent number: 10447098
    Abstract: A rotating electrical machine includes: a rotor core in which a slot passing therethrough is provided; a rotor winding which coil end portion is extended on the axially outer side than the core end face of the rotor core; a U-shaped channel which is arranged on the slot of the rotor core, is touched to come into contact with a bottom portion of the rotor winding, and is axially extended to be projected on the axially outer side than the core end face of the rotor core; a slot cell which insulates the rotor winding and the U-shaped channel from the rotor core; and an interposed piece arranged between the rotor windings at a portion more projected than the core end face of the rotor core. The projected end face of the U-shaped channel is arranged on the axially inner side than the projected end face of the interposed piece.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: October 15, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yosuke Uchida, Naoki Yamamoto
  • Patent number: 10439476
    Abstract: A cooling structure for a rotating electric machine includes a stator, a plurality of refrigerant supply ports, and a refrigerant supply passage. The stator includes a stator core, an insulating member, and a plurality of coils. Each of the plurality of coils includes a corner portion having an arc shape when viewed in a radial direction. The plurality of refrigerant supply ports are arranged at a distance from the plurality of coils in a rotational axis direction. Each of the plurality of refrigerant supply ports is arranged at a position opposite to the corner portion located at a vertically upper side, on both sides of an imaginary vertical plane.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: October 8, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Tetsuhiro Tsuchie
  • Patent number: 10374495
    Abstract: A method releases rotor poles of a large electrical machine from the rotor hub, which in the fitted state is located within the stator. In one method step, at least one device is introduced into the air gap between the sector and a rotor pole to be released. The device has a carrier plate and at least one cushion that can be filled with gas and is attached to the carrier plate. In a following method step, the cushions belonging to the device are filled with gas under pressure, the pressure being successively increased until the pole to be released has come away, and in that, in a following method step, the at least one device is removed from the air gap. In a further step, the released pole is pulled out of the rotor hub.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: August 6, 2019
    Assignee: Voith Patent GmbH
    Inventors: Martin Althoff, Axel Daniel Winter
  • Patent number: 10348150
    Abstract: A stator of a rotating electric machine includes a stator core, a plurality of insulators and a plurality of concentrated winding coils. The stator core includes an annular yoke and a plurality of teeth. The insulators are located along outer peripheral wall surfaces of the teeth. Each of the insulators includes a plurality of first surfaces and a plurality of second surfaces. The second surfaces connect the first surfaces. The coils are fitted on the teeth on which the insulators have been placed from a radially inner side thereof. The first surfaces of each of the insulators are in contact with inner peripheral surfaces of the coil that is placed on the outer periphery of the insulator.
    Type: Grant
    Filed: January 19, 2015
    Date of Patent: July 9, 2019
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Tomohiko Miyamoto, Takeshi Tsuji, Dai Nakajima
  • Patent number: 10291106
    Abstract: In a stator, a stator winding is wound at a stator core. The stator winding has a section whose shape is rectangular and includes a plurality of conductors electrically connected to each other. Each of the conductors has in-slot portions being accommodated as being stacked in corresponding one of the slots when the winding is wound at the stator core. A fixing member fixes the in-slot portions to each of the slots. The fixing member is composed of an adhesive material charged into each of the slots such that a through-hole is left through each of the slots in the axial direction. Refrigerant is allowed to pass through the through-hole.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: May 14, 2019
    Assignee: DENSO CORPORATION
    Inventor: Yuki Takahashi
  • Patent number: 10291093
    Abstract: A carrier for coils of an electric machine includes a rotation-symmetrical carrier stack having laminations with axial slots which are configured to receive a wire of the coils. Adjacent ones of the slots are separated from one another by a slot wall. The carrier stack has circular end faces and is formed with slot openings for the slots. Electrically insulating material is applied upon at least the slot walls of at least one of the end faces to cover the slot walls at their end face and to electrically insulate the slot walls.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: May 14, 2019
    Assignee: Audi AG
    Inventors: Roman Strasser, Christian Westermaier
  • Patent number: 10211704
    Abstract: A fluid-cooled stator assembly for electrical machines. The stator assembly may include a stator core having a back iron portion and a plurality of stator teeth. Each of the plurality of stator teeth may be separated from each other by at least one of plurality of slots, the slots being structured to receive placement of stator windings. The apparatus also includes a thermal management conduit that is positioned at various locations about the stator assembly, including within or along the back iron portion, stator teeth, slots, and/or among the stator windings. Further, the thermal management conduit may provide insulation for one or more coils of the stator windings. Additionally, at least a portion of the thermal management conduit may be formed from a thermally conductive polymer. The thermal management conduit is configured to convey a thermal management fluid in a heat exchange relationship with the stator assembly.
    Type: Grant
    Filed: August 29, 2015
    Date of Patent: February 19, 2019
    Assignee: ABB Schweiz AG
    Inventors: Darren Tremelling, Steven Hudnut, Heinz Lendenmann
  • Patent number: 10199898
    Abstract: A rotary electric machine includes a stator core, a coil, and a molded portion. The stator core includes an annular yoke and a plurality of teeth. The teeth protrude radially inward from the annular yoke. The coils are wound around the teeth respectively. The coil includes a coil end that protrudes toward an axially outer side from an axially end surface of the stator core. The molded portion is a resin member that covers the coil end. The molded portion includes a first member. The first member includes a communication portion that communicates inside of the molded portion with outside of the molded portion.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: February 5, 2019
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, MATSUO INDUSTRIES, INC.
    Inventors: Kentaro Haruno, Haruki Kusamaki, Yuki Yamakawa
  • Patent number: 10158266
    Abstract: A motor includes: a stator core having a plurality of slots; and a winding inserted into the slot as distributed windings of three phases, wherein an interphase insulation sheet is mounted on a coil end of the winding. The interphase insulation sheet includes: planar insulating portions disposed so as to protrude from each of end surfaces of the stator core; a first leg portion and a second leg portion which integrally connect the planar insulating portions at the end surfaces and which are inserted into the slots; insulating convex portions that protrude toward an inner side in a radial direction of the stator core from the planar insulating portion; and a third leg portion that integrally connects the insulating convex portions at the end surfaces and which are inserted into the slot.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: December 18, 2018
    Assignee: FANUC CORPORATION
    Inventor: Hidetoshi Mitsui
  • Patent number: 10103594
    Abstract: A stator of a rotary machine is provided with a first resin molded body, a second resin molded body and third resin molded bodies which electrically insulate a stator core and coils. The first resin molded body is attached to the stator core on a first side of a lamination direction in which steel sheets are laminated and the second resin molded body is attached to the stator core on a second side of the lamination direction. The third resin molded bodies have shapes extending along slot side surfaces and are provided in a state contacting with a predetermined region of the slot side. First slot side portions of the first resin molded body overlaps end portions of a first side of the third resin molded bodies and second slot side portions of the second molded body overlaps end portions of a second side of the third resin molded bodies.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: October 16, 2018
    Assignee: Top Co., Ltd.
    Inventor: Toru Takimoto
  • Patent number: 10008896
    Abstract: A rotary electric machine includes: a rotor rotating about an axis; a stator formed by annularly combining cores having electric wires wound therearound and placed on the outer side of the rotor in a direction orthogonal to the axis; and an insulator including an outer portion placed on the radially outer side of the stator; an inner portion placed on the radially inner side of the stator; a trunk portion coupling the outer portion and the inner portion and having the electric wire wound therearound; a recess portion formed in a portion of the outer portion facing the inner portion to accommodate the electric wire; and a wall placed at the recess portion on the side of the inner portion to partially cover the recess portion. The insulator is attached to one end portion of the cores in a direction parallel with the axis.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: June 26, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shuichi Mori, Koji Iwano, Yuki Kohara
  • Patent number: 9935505
    Abstract: The invention relates to a laminated core, preferably a stator laminated core or a rotor laminated core (2), of an electric machine, in particular an electric fuel pump of a motor vehicle. The laminated core comprises slots (6), each of which has a slot insulation (7), and winding wires of at least one electric winding (10), said wires running in the slots (6). A plastic encapsulation (17) encases the laminated core together with the winding wires which run in the slots (6) at least in some regions. The plastic encapsulation (17) and the slot insulation (7) each consist of a thermoplastic, and the plastic of the slot insulation (7) has a melting point which is equal to, similar to, or lower than the melting point of the plastic of the plastic encapsulation (17) such that the encapsulation process causes the slot insulation (7) to melt, thereby bonding the slot insulation (7) to the plastic encapsulation (17). The invention further relates to a method for producing a laminated core and to an electric machine.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: April 3, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Oliver Himmel, Ursula Stucke, Joost Nowak, Ingo Buchholz, Alexis Spinner
  • Patent number: 9882445
    Abstract: A phase separator for an electric machine includes a first insulator and a second insulator. The first and second insulators each include a leg portion and an endturn portion connected to the leg portion. The endturn portion is asymmetric with respect to an axis defined by the leg portion such that the second insulator can be inverted and disposed in an overlapping arrangement for electrically insulating endturn portions of adjacent phase windings.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: January 30, 2018
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Joseph K. Coldwate, Wilfredo E. Colón-Velázquez, Gordon W. Friske
  • Patent number: 9847206
    Abstract: The embodiments relate to a rotary anode arrangement with a rotary anode, a rotor for driving the rotary anode and a stator, which exerts a torque on the rotor. The stator includes at least one coil for generating a first magnetic field and at least one permanent magnet for generating a second magnetic field. The embodiments also relate to an X-ray tube with the rotary anode arrangement. The embodiments offer the advantage that a high electromagnetic utilization is possible with a synchronous motor that is excited by permanent magnets.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: December 19, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventors: Zeljko Jajtic, Thomas Weidinger
  • Patent number: 9801295
    Abstract: Remote control units with lanyard attachment mechanisms are disclosed. A handheld remote control assembly can include an anchor member, a lanyard coupled to the anchor member, and a device to be carried by the lanyard. The device includes a body and a receptacle formed in the body, the receptacle configured to receive the anchor member therein. A housing can removably cover the receptacle to secure the anchor member in place, and a notch in the housing receives a portion of the lanyard therethrough.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: October 24, 2017
    Assignee: Oculus VR, LLC
    Inventors: Glen Jason Tompkins, Peter Wesley Bristol, Blake Francis Andersen
  • Patent number: 9755471
    Abstract: In a concentrated winding stator, which has a separated iron core structure, of a rotary electric machine, a length of ear portions 3c of insulating sheets 3, which are protruded between neighboring winding 4, is set as a length by which a creepage distance, which is required for an insulation between the neighboring windings 4, can be secured.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: September 5, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kota Katsuragi, Shogo Okamoto, Shinichiro Yoshida
  • Patent number: 9712014
    Abstract: An insulator to be attached to a laminated core of a rotating electrical machine includes a frame-shaped body which surrounds the laminated core and around which a coil wire is wound, and first and second flanges provided at both open sides of the body. The second flange has a first recess that extends toward the body.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: July 18, 2017
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Yasufumi Kuroiwa, Kanta Yamaguchi, Yoichi Kitano
  • Patent number: 9711264
    Abstract: Fewer insulation layers can be used by virtue of using hydrophobic electrically conductive materials around a main insulation around a conductive bar. There are several more layers of conductive and/or non-conductive material.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: July 18, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Mario Brockschmidt, Peter Gröppel, Friedhelm Pohlmann, Claus Rohr, Roland Röding, Julia Wirsing
  • Patent number: 9705373
    Abstract: An insulator includes a first insulator segment and a second insulator segment that are substantially L-shaped. The first insulator segment includes a side portion, on which an insulating sheet is disposed so as to cover at least a part of one circumferential-direction end surface of the tooth, and a front portion facing one stacking-direction end surface of the tooth. The second insulator segment includes a side portion, on which an insulating sheet is disposed so as to cover at least a part of the other circumferential-direction end surface, and a front portion facing the other stacking-direction end surface. A rectangular protrusion formed on the first insulator segment and a rectangular hole formed in the second insulator segment engage with each other so as to have a movement clearance in which the rectangular protrusion and the rectangular hole are relatively movable in a stacking direction.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: July 11, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Keisuke Azusawa
  • Patent number: 9647502
    Abstract: A stator includes an annular stator core, a stator coil and a resin adhesive. The stator coil is comprised of a plurality of electric wires. The electric wires are partially received in slots of the stator core so that the stator coil has a pair of coil end parts protruding outside the slots respectively from opposite axial end faces of the stator core. The resin adhesive is filled in the slots of the stator core and/or applied to the coil end parts of the stator coil. Moreover, each of the electric wires includes an electric conductor and an insulating coat that covers an outer surface of the electric conductor. The insulating coat is two-layer structured to include an inner coat and an outer coat. The adhesion strength of the outer coat to the resin adhesive is lower than the adhesion strength of the inner coat to the resin adhesive.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: May 9, 2017
    Assignee: DENSO CORPORATION
    Inventors: Yuki Takahashi, Masahiro Seguchi
  • Patent number: 9590461
    Abstract: A rotating electric machine includes a rotor, and a stator that has a stator core and a stator winding. The stator core has a plurality of slots. The stator winding is wound around the stator core as a plurality of electrical conductors is aligned in the radial direction in the slots. The stator has an insulating sheet member that is bent in a rectangular cylindrical shape, and is intervened between the electrical conductor and an inner wall surface of the slot. A length of a bend line formed extending in the axial direction on the insulating sheet member from a reference position in a central section of the insulating sheet member in the axial direction to a tip in the axial direction is configured shorter than a length from the reference position to an end in the axial direction of the sheet member.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: March 7, 2017
    Assignee: DENSO CORPORATION
    Inventors: Hiroshi Kaneiwa, Yuuichirou Itou, Atsushi Jitsumatsu
  • Patent number: 9534590
    Abstract: A compressor includes a casing and a motor disposed inside the casing. The motor is welded to the casing at a plurality of weld positions. The motor includes a core, a coil, at least one insulating member, recesses and a gap. The core has an annular back yoke portion, a plurality of tooth portions projecting radially inwardly from the back yoke portion and a slot formed between the tooth portions adjacent to each other. The coil is disposed in the slot. The insulating member is disposed in the slot to insulate the coil from the core. The recesses are formed in portions of the back yoke portion with each recess facing the slot. The gap is provided between the back yoke portion and the insulating member.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: January 3, 2017
    Assignee: Daikin Industries, Ltd.
    Inventor: Yoshihiro Kataoka
  • Patent number: 9531222
    Abstract: A stationary portion of a motor includes a stator core, insulators, and coils. The stator core includes a core back having an annular shape, and a plurality of teeth extending radially inward from the core back. A radially inner end portion of each tooth has a circumferential width substantially equal to or smaller than a circumferential width of a remaining portion of the tooth. The core back includes a protruding portion protruding radially inward between adjacent teeth, a cut extending radially outward from the protruding portion, and a through hole extending in an axial direction through the core back defined at a radially outer end portion of the cut. The protruding portion increases a radial dimension of the core back to achieve a reduction in magnetic reluctance in the vicinity of the cut.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: December 27, 2016
    Assignee: NIDEC CORPORATION
    Inventors: Yoshihiro Uchitani, Yuji Tanaka, Tomoyoshi Yokogawa
  • Patent number: 9419489
    Abstract: A slot liner for a stator and/or a rotor of an electric machine includes a body configured to be received within a stator slot and/or within a rotor slot. The body extends from a first end to an opposite second end and from a first edge to an opposite second edge. The body includes an inner segment and first and second outer segments that extend along the body. The first and second outer segments flank the inner segment such that the inner segment extends between the first and second outer segments along the body. The inner segment includes at least one different material such that a thermal conductivity of the inner segment is greater than a thermal conductivity of the first and second outer segments.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: August 16, 2016
    Assignee: General Electric Company
    Inventors: Matthew Hal Littlejohn, Xiaomei Fang, Wei Zhang
  • Patent number: 9362792
    Abstract: In one embodiment, a permanent magnet rotor is provided. The permanent magnet rotor includes a substantially cylindrical rotor core including an outer edge, an inner edge, and opposed first and second ends. The rotor further includes a first wall and a second wall defining at least one radial aperture extending radially through the rotor core. The rotor further includes at least one permanent magnet positioned within the at least one radial aperture. A first indentation is formed in one of the at least one permanent magnet and the first wall, the first indentation defining a first space between the at least one permanent magnet and the radial aperture first wall. The rotor further includes a first material positioned within the first space, the material configured to substantially prevent movement of the permanent magnet relative to the at least one radial aperture.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: June 7, 2016
    Assignee: REGAL BELOIT AMERICA, INC.
    Inventors: Daniel Shawn Figgins, Michael Allen Marks
  • Patent number: 9337693
    Abstract: In a rotary electric machine provided with a rotor and a stator, a wedge is inserted between in-slot portions stacked in each of slots of the stator and a wall of each of the slots. The wedge has two edges and a length ranging from one of the edges to the other. The length of the wedge is smaller than an axial length of the stator core. The wall is located oppositely to an opening of each slot. By inserting the wedge, both end portions of the conductors are tilted so as to be oriented oppositely to the rotor in the radial direction. The tilted end portions starts from each of the two edges of the wedge in the axial direction.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: May 10, 2016
    Assignee: DENSO CORPORATION
    Inventor: Yuki Takahashi
  • Patent number: 9331537
    Abstract: A washing machine with a motor having a structure with improved performance. The washing machine includes a body, a tub disposed in the body, a drum rotatably disposed in the tub, and a motor including a stator coupled to a rear surface of the tub and a rotor rotatably disposed inside the stator. The stator includes a stator core including a core body and a plurality of core teeth extending inward from an inner circumferential surface of the core body in a radial direction of the core body, a first insulator and a second insulator covering both ends of the core body and the core teeth, a coil wound around the core teeth, and a plurality of insulation films disposed between the first insulator and the second insulator to electrically insulate the stator core and the coil.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: May 3, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Myung Bae Bang, Byung Ryel In, Woong Hwang, Su Kwon Jeong, Jae Woong Jung
  • Patent number: 9300178
    Abstract: The stator of a vehicle-use electric rotating machine includes a stator core having slots formed along a circumferential direction thereof, segment conductors having a rectangular cross section and wound on the stator core such that each of the slots accommodates at least two of the segment conductors to form a stator winding, a sheet-like electric insulating member disposed in each of the slots so as to surround the segment conductors accommodated in the slot, the electric insulating member being formed with a plurality of projections projecting toward a wall surface of the slot, and a resin filled in each of the slots so as to impregnate into the electric insulating member.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: March 29, 2016
    Assignee: DENSO CORPORATION
    Inventors: Toshimitsu Shiga, Hiroaki Takeda
  • Patent number: 9197102
    Abstract: The present invention relates to a stator assembly that includes: a stator core having a circular base, a plurality of teeth radially formed along an outer circumference of the base, and at least one coupling bushing formed along an inner circumference of the base; an insulation coating layer formed on an surface of the stator core; and a pair of base insulators coupled to top and bottom portions of the base, respectively.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: November 24, 2015
    Assignee: NEW MOTECH CO., LTD.
    Inventors: Jeong Cheol Jang, Ji Min Lee
  • Patent number: 9130430
    Abstract: An electric machine includes a core with a plurality of slots. A plurality of electric conductors are positioned in the slots. Each of the plurality of electric conductors includes a U-turn portion extending between two in-slot portions and connection ends extending from the in-slot portions. The connection ends are positioned on an opposite end of the core from the U-turn portions. A plurality of insulation tubes are positioned in the plurality of slots. The in-slot portions of the electric conductors extend through the insulation tubes.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: September 8, 2015
    Assignee: Remy Technologies LLC
    Inventors: Bradley D. Chamberlin, Koon Hoong Wan, Alex Creviston
  • Patent number: 9065316
    Abstract: A stator structure for a rotary electric machine includes a stator core having a cylindrical shape in which slots and pole pieces are formed on an inner peripheral side and alternately arranged in a circumferential direction, a conductor segment which is a conducting wire having a rectangular cross section inserted in one of the slots through an insulator being connected with a conductor segment similarly inserted in another slot to form a coil. Each insulator has a shape including a pair of opposite side surface portions connected with an intermediate portion along a wall surface defining the slot. Each insulator includes end protrusions facing each other at free ends of the side surface portions to position the conductor segments. The insulators are made of an insulating and elastic material.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: June 23, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shingo Fubuki, Yasuji Taketsuna, Yasushi Nishikuma, Katsuhiko Tatebe, Tomohiro Takenaga
  • Publication number: 20150130322
    Abstract: A tooth of a stator has a tapered shape in which a tooth width decreases toward a distal end portion thereof. A winding is formed of an edgewise winding wound around the tooth in a row. The winding is supplied with power so that a terminal on a base portion side of the tooth may have a higher voltage than that of a terminal on the distal end portion side thereof. A tooth width Th of the base portion is set within the range of Tmin<Th<1.25Tha defined by a tooth width Tha that maximizes an index using an outer radius and a core back width of a stator core, a clearance of the windings in the slot, a winding width, an air gap between the teeth and the winding, a pitch of the slot, and an inclination angle of the winding, and a permissible lower limit Tmin.
    Type: Application
    Filed: June 4, 2013
    Publication date: May 14, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Moriyuki Hazeyama, Hideaki Arita, Yoshihiro Miyama, Akihiro Daikoku
  • Patent number: 9024500
    Abstract: An insulator includes a main body, a latching portion, and a slot. The main body covers a portion of a stator core around which a coil is wound to insulate the stator core from the coil. The latching portion is disposed at an end of a portion of the main body around which the coil is wound to latch the coil onto the main body. The slot is formed so as to expose the coil at a portion of the latching portion on a side where cooling oil for cooling the coil is supplied to the coil.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: May 5, 2015
    Assignee: Komatsu Ltd.
    Inventors: Takaaki Kimura, Yukihiko Sugimoto, Ryou Kawai
  • Publication number: 20150115765
    Abstract: A motor having an improved structure in which winding patterns of a stator coil can be simplified, and a method of winding a stator coil. The motor includes a stator, a rotor and a motor shaft. The stator has a stator body and a first insulator and a second insulator that are coupled to upper and lower parts of the stator body. The rotor is disposed in the stator and configured to rotate while electromagnetically interacting with the stator. The motor shaft is coupled to the rotor so as to rotate together with the rotor, and a plurality of binding bosses are provided along a circumferential direction of one of the first insulator and the second insulator so that coils to which different voltages are applied, are wound around one of the first insulator and the second insulator.
    Type: Application
    Filed: June 16, 2014
    Publication date: April 30, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung Soo KO, Dong Woo Kang, Kang Rib Kim, Young Kwan Kim, Hong Seok Kim
  • Publication number: 20150115764
    Abstract: Embodiments of the disclosure can include a method for reducing or repairing vibration-caused damage in a stator bar, and a dynamoelectric machine resulting therefrom. The method for reducing vibration-caused damage in a stator can include applying, from within a ventilation slot of a stator core, a liquid based vibration-absorbing material onto a side ripple spring, the side ripple spring being in contact with a stator bar and the stator core; and allowing the liquid based vibration-absorbing material to cure, wherein the cured vibration-absorbing material remains in contact with the side ripple spring for absorbing stator vibrations.
    Type: Application
    Filed: October 29, 2013
    Publication date: April 30, 2015
    Applicant: General Electric Company
    Inventors: Jessica Frances Nimmons, Daniel Lawrence Banowetz, Jessica Mary Powers, Dennis Anthony Pasquarella, Leonard Paul Squillacioti
  • Publication number: 20150091409
    Abstract: An armature comprising plural core configuration members; plural insulators integrated with the core configuration members and a coupling portion that couples the pair of insulation portions; and plural coil wires that each includes a pair of wound portions wound onto the respective core configuration members, and a crossing wire that connects together the pair of wound portions; wherein plural armature configuration units are configured independently by integrating a pair of the core configuration members with each of the insulators and winding the coil wire onto the pair of core configuration members; plural armature configuration sections are configured by combining two armature configuration units adjacent in the circumferential direction; and in each of the armature configuration sections, the coupling portion and the crossing wire of one armature configuration units are arranged side by side with the coupling portion and the crossing wire of the other armature configuration units along a direction ortho
    Type: Application
    Filed: September 22, 2014
    Publication date: April 2, 2015
    Inventors: Tetsuji YOSHIKAWA, Akihiko SEKI
  • Patent number: 8981614
    Abstract: Included are a pair of insulators arranged on axial end surfaces of a split core, and an insulating film attached to lateral side surfaces of the tooth part, for insulating the split core from a coil wound around the tooth part. Each insulator includes projections projecting further than a tooth front end part in the circumferential direction, slits which are formed in the respective projections to a corresponding axial end surface side of the tooth front end part and into which the insulating film is inserted, and ribs formed, on an end surface side in the circumferential direction, in the respective projections. The insulating film inserted into the slits is folded back to a back yoke part side with the ribs interposed therein, and fixed by being interposed between the ribs at tip portions of projections of adjacent insulators. Accordingly, the insulating film can be assuredly fixed and prevented from escaping from a slot.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: March 17, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Keiichiro Oka, Hiroyuki Akita, Toshio Arai
  • Publication number: 20150069878
    Abstract: An electric motor is provided with a stator core (3) configured by laminating a required number of annular electromagnetic steel sheets (5) having a plurality of tooth portions (4) around each of which a coil winding is wound, on the inner periphery side, wherein circumferential widths (B) of the tooth portion (4) in the plurality of electromagnetic steel sheets (5) which are laminated on both end. sides of the stator core (3) become gradually narrow coward the respective end portion sides, and the coil winding is directly wound around the tooth portion (4) in which shoulder portions (7) on doth sides in a circumferential direction of the tooth portion (4) which is formed by lamination of the electromagnetic steel sheets (5) are shoulder portions (7) which smoothly change so as to narrow in width in a stepwise fashion toward the respective end portions.
    Type: Application
    Filed: April 23, 2013
    Publication date: March 12, 2015
    Applicant: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.
    Inventors: Makoto Hattori, Masahiko Asai, Kazuki Niwa
  • Publication number: 20150054377
    Abstract: A stator includes a first teeth unit including a first insulator having an annular first crossover wire guide and a plurality of first winding units radially provided at regular intervals on an outer circumference of the first crossover wire guide to cover teeth of one phase group of an alternating current, the teeth of the one phase group having upper halves fitted to the first winding units, a third insulator that covers lower halves of the teeth, and a winding wire of one phase wound around the teeth of the one phase group, a second teeth unit having an identical configuration to that of the first teeth unit in which a winding wire of the other phase is wound in a concentrated manner, with second winding units inserted between adjacent ones of the first winding units, and an annular yoke including a plurality of recesses at regular intervals.
    Type: Application
    Filed: April 18, 2012
    Publication date: February 26, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masaki Kameyama, Shinya Oishi, Manabu Deguchi, Toshihiko Mizutani, Takayuki Onihashi, Katsuki Fukuyo, Takashi Suzuki
  • Publication number: 20150048711
    Abstract: An electrical machine includes a back-yoke engagement portion including a convex portion for a back yoke portion formed on an outer-diameter surface of a pair of back yoke-side coil retaining pieces and a shoe engagement portion including a convex portion for a shoe portion. By the convex portion for the back yoke portion and the convex portion for the shoe portion, the back yoke-side coil retaining pieces and shoe-side coil retaining pieces are biased toward a stator core.
    Type: Application
    Filed: September 27, 2012
    Publication date: February 19, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Keiji Hino, Kazuhisa Takashima, Atsushi Ichigozaki, Katsuhiko Sakamoto
  • Publication number: 20150042198
    Abstract: By using an electrically conductive PTFE fabric, high-voltage insulation systems are simplified and can be made thinner, also improving the thermal conductivity. The insulation material is in two layers, each with a hydrophobic and a hydrophobic region, and the hydrophobic regions of the layers are opposed.
    Type: Application
    Filed: March 18, 2013
    Publication date: February 12, 2015
    Inventors: Mario Brockschmidt, Peter Gröppel, Friedhelm Pohlmann, Claus Rohr, Roland Röding
  • Publication number: 20150042180
    Abstract: An insulator to be attached to a laminated core of a rotating electrical machine includes a frame-shaped body which surrounds the laminated core and around which a coil wire is wound, and first and second flanges provided at both open sides of the body. The second flange has a first recess that extends toward the body.
    Type: Application
    Filed: August 4, 2014
    Publication date: February 12, 2015
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Yasufumi KUROIWA, Kanta YAMAGUCHI, Yoichi KITANO
  • Publication number: 20150035406
    Abstract: An electrical machine includes a rotor, a stator having a slot liner including an electrical insulator which extends beyond the stator ends, and a strengthening element provided at each of the slot liner ends, wherein the strengthening strip reduces the splitting of the corresponding slot liner end.
    Type: Application
    Filed: August 2, 2013
    Publication date: February 5, 2015
    Applicant: GE Aviation Systems LLC
    Inventors: Hao Huang, Xiaochuan Jia
  • Publication number: 20150035407
    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: Application
    Filed: July 29, 2014
    Publication date: February 5, 2015
    Inventors: Kazuhiro Yoda, Masaaki Ohashi, Shogo Yoda
  • Publication number: 20150035405
    Abstract: A slot liner is provided for a stator and/or a rotor of an electric machine and includes a body configured to be received within a stator slot of the stator and/or within a rotor slot of the rotor. The body extends a length from a first end to an opposite second end and a width from a first edge to an opposite second edge. The body includes an inner segment and first and second outer segments that extend along the length of the body. The first and second outer segments flank the inner segment such that the inner segment extends between the first and second outer segments along the length of the body. The inner segment includes at least one different material than the first and second outer segments such that a thermal conductivity of the inner segment is greater than a thermal conductivity of the first and second outer segments.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 5, 2015
    Applicant: General Electric Company
    Inventors: Matthew Hal Littlejohn, Xiaomei Fang, Wei Zhang
  • Patent number: 8946970
    Abstract: Systems and methods for the construction of electric motors, where expandable material is inserted into the slots in which magnet wires are positioned and expanded in the slots to mechanically restrain the wires. One embodiment comprises a downhole electric motor such as might be used in an electric submersible pump (ESP) system. The motor has a stator with multiple slots in which magnet wires are positioned. A slot liner is positioned in each slot and an expansion pad is positioned in each slot between the slot liner and the slot wall nearest the bore of the stator. The wires are positioned inside the slot liner. When the motor is almost completely assembled, it is filled with oil. Some of the oil is absorbed by the expansion pads, which then expand to fill the unoccupied volume in the slots, thereby restraining the movement of the wires within the slots.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: February 3, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: John M. Knapp, Sean A. Cain, Michael R. Rumbaugh, Carlos A. Prieto
  • Publication number: 20150028716
    Abstract: An electric machine includes a core with a plurality of teeth that extends between end faces of the core. Slots are defined in the core between adjacent teeth of the plurality of teeth. The slots each have a radial opening formed between end portions of the adjacent teeth. An insulation sheet is positioned on the core to obstruct the radial openings to the slots. The insulation has at least two spaced circumferential members that respectively overlap the end faces of the core. The insulation sheet also has a plurality of spaced axial members connected to the circumferential members. The axial members are positioned within the slots to obstruct the radial openings to the slots.
    Type: Application
    Filed: July 29, 2013
    Publication date: January 29, 2015
    Applicant: Remy Technologies LLC
    Inventors: Chad Zook, Kirk Neet, Scott Bitzer
  • Publication number: 20150022050
    Abstract: An electric rotating machine having high cooling performance is provided. The electric rotating machine is configured to include a rotor rotating around a rotational axis; and a stator disposed to face the circumferential surface of the rotor. The stator includes a stator core having a cylindrical core back and a plurality of teeth radially extending from the core back, and a stator coil wound around the teeth in concentrated winding via an insulation material. A spacer having electric insulation performance is attached between the stator coils each wound around the respective teeth adjacent to each other. The spacer has a coefficient of linear expansion greater than that of the stator core.
    Type: Application
    Filed: February 1, 2013
    Publication date: January 22, 2015
    Inventors: Itsuro Sawada, Hiroshi Hamano, Taisuke Ikeda, Yasuyuki Saito, Yuji Kano
  • Publication number: 20150008784
    Abstract: A motor includes an armature arranged radially outside a rotor magnet, and a casing configured to fix the armature and hold upper and lower bearings configured to rotatably support a shaft at a radial center thereof. The armature includes a stator core, an insulator arranged to cover the stator core, coils each of which is defined by a conducting wire wound around a separate one of magnetic pole teeth with the insulator intervening therebetween, and passage lines each of which is arranged circumferentially between adjacent ones of the magnetic pole teeth to electrically connect one of the coils and another one of the coils with each other. The insulator includes magnetic pole tooth insulating portions arranged to cover a separate one of the magnetic pole teeth; and a core back insulating portion integral with each magnetic pole tooth insulating portion.
    Type: Application
    Filed: June 30, 2014
    Publication date: January 8, 2015
    Applicant: NIDEC CORPORATION
    Inventors: Kazuya KITAJI, Keizo FURUKAWA
  • Publication number: 20150008769
    Abstract: A stationary portion of a motor includes resin bodies including an inner and outer resin portion arranged between a tooth and a coil and between the tooth and an insulator. The outer resin portion covers circumferentially outer sides and axially outer sides of the coil. The inner and outer resin portions are continuous with each other through a connecting resin portion. The insulator includes an opening portion arranged to extend along circumferential side surfaces of the tooth. The inner resin portion is arranged to contact the circumferential side surfaces of the tooth and a conducting wire in the opening portion. Heat generated in the coil is transferred to the tooth through the resin body such that a large area of a path along which the heat is transferred from the coil to the tooth is secured.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 8, 2015
    Applicant: NIDEC CORPORATION
    Inventors: Yoshihiro Uchitani, Yuji Tanaka, Tomoyoshi Yokogawa