Wave Patents (Class 310/207)
  • Patent number: 10892672
    Abstract: A dual-rotor machine comprising a dual rotor support structure rotatably connected to a frame. A stationary stator is disposed between the rotors and is fixed to the frame. An inner rotor and outer rotor, each comprising a permanent magnet Halbach array, are coaxially disposed with the stator and are rotable about the stator. In this configuration, the inner rotor channels its magnetic flux to its outside, while the outer rotor channels its magnetic flux to its inside. The magnetic flux density at the stator for the dual-rotor machine can be as high as 2 Tesla or higher for high-grade neodymium-iron-boron permanent magnet material, and the stored magnetic energy for conversion to mechanical or electrical energy available to the stator may be at least 0.5 kJ/m. The rotor Halbach arrays may comprise monolithic permanent magnets with continuously variable magnetic field direction.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: January 12, 2021
    Assignee: Advanced Magnet Lab, Inc.
    Inventors: Rainer Meinke, Shashikant Manikonda
  • Patent number: 10892659
    Abstract: A stator unit for including a plurality of coils includes a stator core configured to have the coils wound around the stator core; and a routing member including a plurality of groove configured to have wires routed in the groove, the wires extending from the coils.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: January 12, 2021
    Assignee: TOP CO., LTD.
    Inventors: Suguru Sakamoto, Yoshiteru Kurokawa, Junya Okabe, Hiroyuki Miyoshi, Yoshihiro Kodera
  • Patent number: 10784759
    Abstract: The present application relates to the technical field of electronics and provides a linear vibrating motor. The linear vibrating motor comprises a motor housing, a stator, a vibrator and an elastic support member through which the vibrator is suspended in the motor housing, wherein the elastic support member is configured to support the vibrator and to provide an elastic restoring force; the stator comprises a coil and a circuit board; the circuit board comprises a circuit connecting end, a coil securing end and a transitional connecting plate through which the circuit connecting end and the coil securing end are connected; and a coil securing plate that is not co-planer with the transitional connecting plate is disposed on the coil securing end and fixedly connected to the motor housing. The circuit board is compact in structure and does not take up the internal space of the motor housing.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: September 22, 2020
    Assignee: GOERTEK INC.
    Inventors: Yueguang Zhu, Dezhang Shi
  • Patent number: 10763718
    Abstract: In this stator core, the interval in the circumferential direction of the stator core between an outer peripheral surface of an axial end of a slot accommodated portion of a concentric coil and a tooth facing the outer peripheral surface is larger than the interval in the circumferential direction of the stator core between an inner peripheral surface of the axial end and a tooth facing the inner peripheral surface.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: September 1, 2020
    Assignee: SISIN AW CO., LTD.
    Inventors: Kiyotaka Koga, Shingo Hashimoto, Shingo Sato
  • Patent number: 10763719
    Abstract: A stator that includes a stator core having a fastening hole; and a plurality of coils arranged in slots of the stator core and each formed of a conductor wire, wherein each of the coils includes lead wires at ends of the conductor wire, and a plurality of connectors, which are portions where the lead wires of the plurality of coils are connected to each other, are arranged so as not to overlap the fastening hole in a state in which a distance between the connector adjacent to the fastening hole in a circumferential direction of the stator core when viewed in a rotation axis direction and the connector adjacent to the connector on a side opposite to the fastening hole side out of the connectors is smaller than a distance between the connectors other than the connector adjacent to the fastening hole.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: September 1, 2020
    Assignee: AISIN AW CO., LTD.
    Inventors: Shingo Hashimoto, Shingo Sato, Junichi Yokota
  • Patent number: 10756584
    Abstract: In an electric motor (2) which includes four permanent magnets (12) and in which the number of teeth (20) and the number of slots (23) are set to 6, when a polar arc angle of the permanent magnet (12) is ?1, and a skew angle of the teeth (20) and the slots (23) is ?2, the polar arc angle ?1 and the skew angle ?2 are set so as to satisfy 50°??1<70° and 0°<?2?20°.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: August 25, 2020
    Assignee: Mitsuba Corporation
    Inventors: Teppei Tokizaki, Yoshichika Kawashima, Natsumi Tamura
  • Patent number: 10756587
    Abstract: Object: To provide a polyphase AC electric motor whereby partial discharge can be suppressed. Resolution Means: The winding of each phase includes a first partial conductor that is an input side partial conductor; an nth partial conductor connected to a neutral point; and second to n-1th partial conductors.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: August 25, 2020
    Assignees: FURUKAWA ELECTRIC CO., LTD., FURUKAWA MAGNET WIRE CO., LTD.
    Inventors: Eigo Tachikawa, Tsuneo Aoi
  • Patent number: 10666104
    Abstract: A rotating electrical machine where the concentric coil includes a first concentric coil, a second concentric coil, a third concentric coil, and a fourth concentric coil which are of the same phase and are connected in parallel with each other, and each of the first concentric coil, the second concentric coil, the third concentric coil, and the fourth concentric coil has a one-side concentric coil whose coil center is located on one side in a circumferential direction with respect to a center of a magnetic pole, and an other-side concentric coil whose coil center is located on the other side in the circumferential direction with respect to a center of a magnetic pole.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: May 26, 2020
    Assignee: AISIN AW CO., LTD.
    Inventor: Kiyotaka Koga
  • Patent number: 10594182
    Abstract: A stator manufacturing method that includes a lead wire bending process of inserting a plurality of concentrically wound coils into slots, each of the concentrically wound coils being formed by winding a flat conductive wire for a plurality of turns, each of the slots being formed between every two adjacent teeth extending radially inward from an annular back yoke of a stator core, and bending lead wire portions of the inserted concentrically wound coils projecting in an axial direction from an end surface of the stator core, and a second bending process of bending the lead wire portions using the connection parts as fulcrums so that the lead wire portions approach the end surface of the stator core along the circumferential direction of the stator core after the first bending process.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: March 17, 2020
    Assignee: AISIN AW CO., LTD.
    Inventors: Shingo Hashimoto, Shingo Sato, Masaki Saito, Kiyotaka Koga
  • Patent number: 10498183
    Abstract: A flexible winding, for a brushless, rotating motor, comprising a flexible substrate. A first winding circuit is disposed on a first side of the substrate. The flexible substrate is rolled into a substantially cylindrical shape such that the first winding circuit forms a winding suitable for an electric machine, such as a rotary motor.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: December 3, 2019
    Assignee: Allied Motion Technologies Inc.
    Inventor: Krijn Dieleman
  • Patent number: 10469003
    Abstract: One end of each of phase conductors wound around a stator core in a wave winding arrangement is connected to a positive electrode terminal of a DC power supply through a first positive electrode side switch and is connected to a negative electrode terminal of the DC power supply through a second negative electrode side switch. The other end of the phase conductor is connected to the negative electrode terminal of the DC power supply through a first negative electrode side switch and is connected to the positive electrode terminal of the DC power supply through a second positive electrode side switch. The first positive electrode side switch, the second negative electrode side switch, the first negative electrode side switch, and the second positive electrode side switch are controlled by a controller, whereby amplitude and phase of current passing through each of the phase conductors are individually controlled.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: November 5, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshihiro Miyama, Hideaki Arita, Akihiro Daikoku, Kan Akatsu, Hiroki Hijikata
  • Patent number: 10355571
    Abstract: An armature includes an armature core, teeth, a commutator, concentrated winding wires, and distributed winding wires. Each of the teeth includes a first branch portion and a second branch portion. Each of segments in the commutator has a riser. A start end and a terminal end of the concentrated winding wire are pulled out separately in a direction getting closer to the commutator and in a direction away from the commutator. The conductor between the concentrated winding wires is hooked by the riser by which the conductor between the other concentrated winding wires is not hooked. A start end and a terminal end of the distributed winding wire are pulled out separately in a direction getting closer to the commutator and in a direction away from the commutator. The conductor between the distributed winding wires is hooked by the riser by which at least one of the conductor between the concentrated winding wires and the conductor between the other distributed winding wires is not hooked.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: July 16, 2019
    Assignee: Denso Corporation
    Inventors: Akihiko Seki, Tomohisa Okamoto, Takehiko Ohshita
  • Patent number: 10222240
    Abstract: In a resolver, a detecting stator core includes a first detection winding group, a second detection winding group, and a plurality of excitation windings. The first detection winding group includes a plurality of first windings as detection windings. The second detection winding group includes, as detection windings, a plurality of second windings different from the first windings in the phase of the detection voltage. The excitation windings are each wound around one of teeth of the detecting stator core. Each first winding and each second winding are wound around different teeth from each other without being wound around the same tooth. The detection winding and the excitation winding that are wound around the same tooth are arranged so as to be separated from each other in a radial direction.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: March 5, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunta Kashima, Toshinori Tanaka, Morishige Minobe, Satoru Nakada, Ryuichi Takiguchi, Takanori Komatsu
  • Patent number: 10044250
    Abstract: An armature includes an armature core, teeth, a commutator, concentrated winding wires, and distributed winding wires. Each of the teeth includes a first branch portion and a second branch portion. Each of segments in the commutator has a riser. A start end and a terminal end of the concentrated winding wire are pulled out separately in a direction getting closer to the commutator and in a direction away from the commutator. The conductor between the concentrated winding wires is hooked by the riser by which the conductor between the other concentrated winding wires is not hooked. A start end and a terminal end of the distributed winding wire are pulled out separately in a direction getting closer to the commutator and in a direction away from the commutator. The conductor between the distributed winding wires is hooked by the riser by which at least one of the conductor between the concentrated winding wires and the conductor between the other distributed winding wires is not hooked.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: August 7, 2018
    Assignee: DENSO CORPORATION
    Inventors: Akihiko Seki, Tomohisa Okamoto, Takehiko Ohshita
  • Patent number: 9780615
    Abstract: A motor winding structure includes a base plate is disclosed. The base plate includes a board having a winding unit. The winding unit includes a plurality of coils formed on the surface of the board by electroforming or layout. Each coil has a center, and includes an inner end adjacent to the center and an outer end distant to the center. Two adjacent coils are connected to each other via the inner ends. The winding unit further includes an insulating layer and a conducting layer. The inner ends of the two coils are connected to an electrical connection pad. The insulating layer is arranged on the board. The two adjacent coils are covered by the insulating layer. The conducting layer extends through the insulating layer and is connected to the electrical connection pads of the two coils. The two coils are connected to each other via the inner ends.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: October 3, 2017
    Assignee: Sunonwealth Electric Machine Industry Co., Ltd.
    Inventors: Guan-Ming Chen, Chang-Yu Lin
  • Patent number: 9680345
    Abstract: A stator for a rotating electric machine, including an annular stator core having a plurality of slots circumferentially arranged in the stator core, and a stator winding wound around the stator core and comprised of a plurality of U-shaped conductor segments inserted in the slots and connected to each other. Each conductor segment includes a conductor and a bilayer insulative coating comprised of an insulating layer covering a peripheral surface of the conductor and a protective layer covering a peripheral surface of the insulating layer. The protective layer is formed of a material having a Young's modulus that is equal to or greater than a Young's modulus of the insulating layer at room temperature and less than the Young's modulus of the insulating layer in high temperature environments caused by heat generation of the stator winding.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: June 13, 2017
    Assignee: DENSO CORPORATION
    Inventor: Akito Tamura
  • Patent number: 9621004
    Abstract: An armature includes a core having a plurality of teeth, which are radially formed with a rotation axis as the center, a plurality of coils where each coil is wound around each set of teeth containing at least two teeth. The plurality of coils have a plurality of inside coils placed on a rotation axis side of the teeth and a plurality of outside coils placed outside the inside coils. The plurality of inside coils are circularly arranged so that inside coils adjacent to each other are not wound around the same tooth. The plurality of outside coils are circularly arranged so that outside coils adjacent to each other are not wound around the same tooth. The outside coils are wound around a second set of combinations of teeth, which are different from a first set of combinations of teeth around which the inside coils are wound.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: April 11, 2017
    Assignee: Mabuchi Motor Co., Ltd.
    Inventors: Hiroshi Kimura, Takashi Muramoto, Hisashi Ogino
  • Patent number: 9590462
    Abstract: An electric compressor includes a hermetic container 103, an electric motor drive circuit section 201, a through hole 120, a hermetic terminal 207, a conductive terminal 301, a connecting terminal 302, and a housing 300. The terminal connecting portion connects the conductive terminal 301 and the cluster terminal 302 to each other. The housing is composed of a plurality of structure bodies. A convexo-concave shape is provided between bonding surfaces of the plurality of structure bodies. The housing 300 is provided with a cylindrical structure 311 into which the conductive terminal 301 is inserted. A convex structure 316 which comes into contact with the wire 306 is formed on an inner surface of the wire-insertion hole 307.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: March 7, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Gento Kobayashi, Nobuyuki Nishii, Nobuaki Ogawa, Minoru Fukumoto
  • Patent number: 9035525
    Abstract: According to one embodiment, there is provided a 3-phase 2-pole 2-layer armature winding, housed in 72 slots provided in a laminated iron core, a winding of each phase including six parallel circuits separated into two phase belts. Upper coil pieces of first and fourth parallel circuits are placed at 3rd, 4th, 7th, and 12th positions, and lower coil pieces of the first and fourth parallel circuits are placed at 1st, 6th, 9th, and 10th positions, upper and lower coil pieces of second and fifth parallel circuits are placed at 2nd, 5th, 8th, and 11th positions, and upper coil pieces of third and six parallel circuits are placed at 1st, 6th, 9th, and 10th positions, and lower coil pieces of the third and six parallel circuits are placed at 3rd, 4th, 7th, and 12th positions, from the center of a pole.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: May 19, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tadashi Tokumasu, Masafumi Fujita, Takashi Ueda, Mikio Kakiuchi
  • Patent number: 9035526
    Abstract: In one possible implementation, a method for forming a motor winding is provided which includes compressing a Litz wire to form a compacted Litz wire and forming the winding with the compacted Litz wire. In one possible embodiment, a motor winding is provided that has a high density multi-conductor wire bundle comprises of compacted Litz wire.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: May 19, 2015
    Assignee: AeroVironment, Inc.
    Inventors: Wally Ewald Rippel, Zaher Abdallah Daboussi, Bradford M. Hori, Scott Garret Berman, Bart Dean Hibbs, Sr.
  • Patent number: 8987969
    Abstract: The invention has an object to provide a stator including coils that protrude less in the radial direction of the stator and can be made smaller in the radial direction of the stator, and a method of manufacturing the same.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: March 24, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hideki Kamatani
  • Patent number: 8966742
    Abstract: A method of producing a stator winding for a stator of an electrical machine includes positioning a phase winding segment of the stator winding in a same plane in a serpentine manner in a first direction (X) and in a shape of a wave in a second direction (Y) transverse to the first direction. The method includes bending regions (A, B, C) of the phase winding segment toward one another along a folding line to form a lap winding including positioning regions (C) parallel to each other connected by regions (B) where the regions (B) cross the at least one folding line (108). The phase winding is formed with a continuous wire.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: March 3, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Gert Wolf, Thomas Berger
  • Publication number: 20150042188
    Abstract: The invention relates to an air-cooled dynamoelectric machine (1), in particular for low voltage<1000 V, comprising a stator (2), grooves (10) extending axially and facing a stator bore (9), in which grooves a multi-phase winding system is arranged, which forms a winding head (7) at each end face of the stator (2), wherein a phase separator (8) is provided between the different phases of the winding system in the winding head (7), wherein the phase separator (8) comprises two layers, with spacing elements (11) lying therebetween.
    Type: Application
    Filed: March 13, 2013
    Publication date: February 12, 2015
    Inventors: Willi Lutz, Norbert Schönbauer
  • Patent number: 8946963
    Abstract: A polyphase stator for an internally ventilated rotating electrical machine comprises a body (14) provided with slots and carrying a coil (12) having at least one winding per phase. A plurality of pairs of lateral branches are mounted in a slot of the body (14). A plurality of connecting heads (50 to 55) extend outside the body (14) so as to form a first lead-out (42) and interconnect each pair of lateral branches. A plurality of coupling feet (150 to 155) are offset circumferentially with respect to the plurality of connecting heads and extend outside the body (14) so as to form a second lead-out (43) and interconnect each pair of lateral branches. One of the pluralities has a generally pointed shape and has an axial length of between 15 and 20 mm. The stator is used with an alternator or alternator-stator for a motor vehicle. An internally ventilated electrical machine is equipped with the stator.
    Type: Grant
    Filed: July 4, 2008
    Date of Patent: February 3, 2015
    Assignee: Valeo Equipments Electriques Moteur
    Inventors: Xavier Dunesme, Jerome Fournier, Nicolas Langlard, Pierre Faverolle
  • Publication number: 20140333169
    Abstract: A design for and method of winding an electric motor, generator or other electrical machine using multiple strands of wire preformed into a wave shape with a plurality of legs connected by shaped end turns. This results in efficient packing and improved machine performance in terms of both efficiency and power density without the need for flux concentrators. The conductors or windings may be preformed so as to be a self supporting structure, aiding assembly and eliminating the need for an iron core.
    Type: Application
    Filed: July 23, 2014
    Publication date: November 13, 2014
    Applicant: HYBRIDAUTO PTY LTD
    Inventors: Matthew GREAVES, Ben GUYMER, Bernie WALSH
  • Patent number: 8884488
    Abstract: A stator for an electric rotating machine includes a stator core which has a plurality of slots and a stator winding which is provided at the stator core. The stator winding has a plurality of conductor segments each of which includes an inner conducting body accommodated in the slot of the stator core and coil ends exposed from the slot, and weld portions which are connected with each other by welding the conductor segments at at least one of the coil ends. The weld portions are annularly disposed with an interval therebetween. The weld portions are coated with an insulating resin material. The resin material is formed of a plurality of layered insulating films.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: November 11, 2014
    Assignee: Denso Corporation
    Inventors: Shigenobu Nakamura, Akira Takasaki
  • Patent number: 8860278
    Abstract: A stator assembly comprises a stator defining S slots. First and second windings are arranged in each of the S slots. The two windings have a width in a radial direction and a thickness in a direction perpendicular to the radial direction. A ratio of the width to the thickness is between 3.0:1 and 4.5:1.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: October 14, 2014
    Inventor: John C. Morgante
  • Patent number: 8841806
    Abstract: An electric motor includes a rotary shaft, a rotor fixed on the rotary shaft, and a stator having plural slots in which coils of different phases are wound. Each of the coils has at least one pair of end wires. At least in the coil located closest to the rotor, one of the end wires located farther from the rotor than the other of the end wires is used as a lead wire that is to be electrically connected to a driver circuit for energizing the coils.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: September 23, 2014
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Hiroshi Fukasaku, Shinichi Okuyama, Tatsuya Horiba
  • Publication number: 20140252908
    Abstract: The disclosed stator or rotor has a distributed wave winding, in which the wires are associated in pairs lying with straight segments in the same slots. Head portions of two successive straight segments of each wire of a pair protrude from opposite ends of slots. For forming two wire groups, a plurality of coil windings are simultaneously created by winding up n parallel wires with intermediate spacing onto a striplike former that is rotatable about its longitudinal axis. From each of the parallel wires one straight segment and one end turn are doubled by being bent over with the wire length of a head portion, and then head portions are formed and the wires interlaced. Finally, the two wire groups are wound onto one another and thereby intertwined with one another, and then introduced as an entire intertwined wave winding strand into the stator or rotor slots.
    Type: Application
    Filed: March 11, 2014
    Publication date: September 11, 2014
    Applicant: Elmotec Statomat Vertriebs GmbH
    Inventors: Sadik SADIKU, Keith A. WITWER
  • Patent number: 8823238
    Abstract: A design for and method of winding an electric motor, generator or other electrical machine using multiple strands of wire preformed into a wave shape with a plurality of legs connected by shaped end turns. This results in efficient packing and improved machine performance in terms of both efficiency and power density without the need for flux concentrators. The conductors or windings may be preformed so as to be a self supporting structure, aiding assembly and eliminating the need for an iron core.
    Type: Grant
    Filed: April 1, 2008
    Date of Patent: September 2, 2014
    Assignee: Hybridauto Pty Ltd
    Inventors: Matthew Greaves, Ben Guymer, Bernie Walsh
  • Patent number: 8803397
    Abstract: According to one embodiment, there is provided a 3-phase 2-pole 2-layer armature winding, housed in 72 slots provided in a laminated iron core, a winding of each phase including six parallel circuits separated into two phase belts. Upper coil pieces of first and fourth parallel circuits are placed at 3rd, 4th, 7th, and 12th positions, and lower coil pieces of the first and fourth parallel circuits are placed at 1st, 6th, 9th, and 10th positions, upper and lower coil pieces of second and fifth parallel circuits are placed at 2nd, 5th, 8th, and 11th positions, and upper coil pieces of third and six parallel circuits are placed at 1st, 6th, 9th, and 10th positions, and lower coil pieces of the third and six parallel circuits are placed at 3rd, 4th, 7th, and 12th positions, from the center of a pole.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: August 12, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tadashi Tokumasu, Masafumi Fujita, Takashi Ueda, Mikio Kakiuchi
  • Patent number: 8779643
    Abstract: A stator includes a stator core and a stator coil comprised of a plurality of electric wires. Each of the electric wires has, at least, first, second, and third in-slot portions and first and second turn portions. The first to third in-slot portions are respectively received in three different slots of the stator core. The first turn portion is located on one axial side of the stator core outside of the slots to connect the first and second in-slot portions. The second turn portion is located on the other axial side of the stator core outside of the slots to connect the second and third in-slot portions. For each of the electric wires, the radial distances of the first to third in-slot portions from the axis of the stator core successively decrease. All of the electric wires are offset from one another in the circumferential direction of the stator core.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: July 15, 2014
    Assignee: Denso Corporation
    Inventors: Atsushi Umeda, Atsuo Ishizuka
  • Patent number: 8745847
    Abstract: A method of P-forming a conductor having a rectangular cross-section to create a continuous stator winding. The method includes forming a conductor having a rectangular cross-section into a series of first and second substantially parallel segments that meet at a vertex, deforming the conductor such that each of the first and second segments are non-parallel to form a cross-over feature at the vertex, and deforming a section of each of the first and second segments to include corresponding first and second portions that are generally parallel to create the continuous stator winding.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: June 10, 2014
    Assignee: Remy Technologies, L.L.C.
    Inventor: Mark A. Stephenson
  • Patent number: 8633629
    Abstract: A U phase winding, an X phase winding, a V phase winding, a Y phase winding, a W phase winding, and a Z phase winding are configured by mounting conductor wires so as to alternate repeatedly between 5?/6 short-pitch windings and 7?/6 long-pitch windings, and are mounted into the stator core in that order so as to be stacked sequentially in a radial direction so as to be offset by one slot each in a first circumferential direction.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: January 21, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventor: Toshiaki Kashihara
  • Patent number: 8598765
    Abstract: A U phase winding, an X phase winding, a V phase winding, a Y phase winding, a W phase winding, and a Z phase winding are configured by mounting conductor wires so as to alternate repeatedly between 5?/6 short-pitch windings and 7?/6 long-pitch windings, and are mounted into the stator core in that order so as to be stacked sequentially in a radial direction so as to be offset by one slot each in a first circumferential direction.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: December 3, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventor: Toshiaki Kashihara
  • Patent number: 8581460
    Abstract: An armature for a rotating electrical machine, including an armature core and a coil wound around the armature core. The segment conductor includes a joint extension portion that extends in the axial direction relative to the armature core from at least one end portion of a conductor edge portion. The coil has an n-layer winding structure and includes an inter-layer joint portion on an axial direction outer side of the armature core. The inter-layer joint portion joining a first and second layer side joint extension portions. At least one of the first and second layer side joint extension portions forming a pair to be joined by the inter-layer joint portion includes an offset bend portion, and the first layer side joint extension portion and the second layer side joint extension portion are joined such that respective joint surfaces thereof oppose each other in a circumferential direction.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: November 12, 2013
    Assignee: Aisin AW Co., Ltd.
    Inventors: Keiichi Shinohara, Takuma Takabayashi
  • Patent number: 8575812
    Abstract: A winding for an n-phase electric motor is disclosed. The inventive winding comprises a number of consecutive winding groups of n individual windings, wherein at any point in time an individual winding of a first group exhibits one direction of current flow and wherein at the same point in time a corresponding individual winding of an adjacent group exhibits the opposite direction of current flow. There is also disclosed a method for preparing such winding. It is further disclosed a magnetic unit adapted for such winding, comprising permanent magnets being essentially triangular in cross-section. Further, there is disclosed electric motors using the inventive winding concept, as well as geodetic instruments taking advantage thereof. An electric motor according to the disclosed inventive concept is particularly well suited for direct drive.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: November 5, 2013
    Assignee: Trimble AB
    Inventors: Magnus Westermark, Mikael Hertzman
  • Patent number: 8531077
    Abstract: A stator coil production method using a plurality of shaping press pairs. A stator coil is made up of in-slot portions to be disposed in slots of a stator core and coil-end portions each of which extends every adjacent two of the in-slot portions. Each of the shaping press pairs has a die and a punch disposed on both sides of a conductor wire travel path. The method includes a first step of moving the die and the punch close to each other to shape a portion of a conductor wire into one of the coil-end portions, and a second step of bringing adjacent two of the shaping press pairs close to each other and simultaneously moving one of the adjacent two of the shaping press pairs in a direction perpendicular to the conductor wire to shape a portion of the conductor wire into one of the in-slot portion.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: September 10, 2013
    Assignee: Denso Corporation
    Inventors: Yusuke Hara, Daisuke Okushita, Takao Takeuchi, Kiyokazu Futami, Satoshi Nakamura, Fumihiro Nakano
  • Publication number: 20130221793
    Abstract: A stator of a rotary electric machine includes a stator core and polyphase coils. The stator core has a plurality of slots. The polyphase coils are provided in the slots. Each phase of the polyphase coils has a plurality of coils formed for each pole and connected in parallel. When winding in which a coil pitch is equal to number of slots divided by number of poles is termed full-pitch winding, when winding in which a coil pitch is larger than the coil pitch of the full-pitch winding is termed long-pitch winding, and when winding in which a coil pitch is smaller than the coil pitch of the full-pitch winding is termed short-pitch winding, at least two of the coils of each phase are formed on the stator core by wave winding to alternate between the long-pitch winding and the short-pitch winding along a circumferential direction of the stator core.
    Type: Application
    Filed: February 12, 2013
    Publication date: August 29, 2013
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
  • Publication number: 20130187510
    Abstract: A coil is configured so that: N conductor wires of wave windings each divided at at least two positions in a circumferential direction are provided in one of a plurality of slots; within a unit of the divided wave windings in which conduction is made, the N conductor wires are connected in one of series and parallel to each other at division positions located at substantially the same circumferential position of conductor-wire end portions; division units of the divided wave windings are connected in series to each other, and a total number of series turns of the series-connected division units of the each phase is a predetermined number of series turns, which does not exceed an upper limit value of a terminal voltage of the rotary electric machine; and the series-connected division units of the each phase have the same total number of series turns.
    Type: Application
    Filed: September 12, 2012
    Publication date: July 25, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Ryuichi TAKIGUCHI, Yuji TAKIZAWA, Yu HIROTANI, Satoru AKUTSU, Masatsugu NAKANO, Tetsuya IWATA
  • Publication number: 20130154428
    Abstract: A wave winding coil for a rotary electrical machine includes a coil conductor including coil side portions and coil end portions, the coil conductor being wound to include a wave winding configuration, a relational expression expressing a total number of the coil side portions included in a phase coil is expressed by a mathematical expression 1 m×k=n×q×2p, and m refers to the number of the phase unit coils that are parallelly connected to each other, k refers to the number of the coil side portions that are serially connected to each other, q refers to the number of serially-connected-conductors per magnetic pole, the serially-connected-conductor belongs to one of the kinds of the coil side portions, 2p refers to the number of the magnetic pole, m refers to a common divisor between q×2p and n.
    Type: Application
    Filed: December 17, 2012
    Publication date: June 20, 2013
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventor: AISIN SEIKI KABUSHIKI KAISHA
  • Patent number: 8466598
    Abstract: An electric rotating machine includes a multi-phase stator coil that is wound on a stator core in a distributed winding manner. Each of phase windings of the stator coil is formed of an electric wire bundle which includes a plurality of insulation-coated electric wires that are electrically connected to one another. Each of the electric wire bundles forming the phase windings has in-slot portions, which are respectively received in corresponding slots of the stator core, and turn portions that are located outside the slots of the stator core to connect adjacent pairs of the in-slot portions. Each of the electric wire bundles further includes a plurality of insulating layers that are respectively formed at predetermined positions, at which the turn portions of the electric wire bundle overlap those of the other electric wire bundles, so as to surround the electric wires of the electric wire bundle.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: June 18, 2013
    Assignee: Denso Corporation
    Inventors: Masahiko Osada, Takuzou Mukai
  • Patent number: 8456052
    Abstract: Stator winding (10) for an electric machine, in particular for a generator of a motor vehicle, the stator winding (10) being embodied as an ordered stator winding (10), and the stator winding (10) being embodied in at least two axially spaced-apart levels (22, 24) in a winding head (13). The invention also relates to an electric machine and a method for manufacturing a stator winding (10) of an electric machine.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: June 4, 2013
    Assignee: Robert Bosch GmbH
    Inventor: Gert Wolf
  • Patent number: 8450899
    Abstract: A stator includes a stator core and a multi-phase stator coil comprised of a plurality of electric wires. Each of the electric wires has first, second, . . . , nth in-slot portions and first, second, . . . , (n?1)th turn portions, where n is an integer not less than 4. The first in-slot portions of the electric wires are located most radially outward and the nth in-slot portions are located most radially inward in the slots of the stator core. Each of the electric wires also has a first end portion positioned on the first in-slot portion side and a second end portion positioned on the nth in-slot portion side. Each of phase windings of the stator coil is formed of at least two of the electric wires. The first end portion of one of the two electric wires is connected to the second end portion of the other electric wire.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: May 28, 2013
    Assignee: Denso Corporation
    Inventors: Atsushi Umeda, Atsuo Ishizuka, Shigenobu Nakamura
  • Publication number: 20130113330
    Abstract: A rotating electrical machine includes: a stator core; a stator winding; and a rotor. Cross conductors connect slot conductors to run astride slots with the slot pitch N+1 at coil ends on one side and run astride slots with the slot pitch N?1 at coil ends on another side, with N representing a number of slots per pole; the stator winding includes slot conductor groups each having a plurality of slot conductors; the plurality of slot conductors in each slot conductor group are inserted at a predetermined number Ns of successive slots so that the slot conductors in the slot conductor group take successive slot positions and successive layer positions; and the number Ns is set so that Ns=NSPP+NL when NSPP represents a number of slots per phase per pole and a number of layers is expressed as 2×NL.
    Type: Application
    Filed: July 20, 2011
    Publication date: May 9, 2013
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD
    Inventors: Yasuyuki Saito, Noriaki Hino, Tomoaki Kaimori, Kenichi Nakayama, Yoshimi Mori, Keiji Oda
  • Patent number: 8427024
    Abstract: To provide a stator capable of achieving downsizing and high output power and a stator manufacturing method, a stator comprises a split stator core and slots formed between the teeth, and protrusion-formed coils each being made of a flat rectangular conductor and placed in the slots. Each protrusion-formed coil has a shape including, in a coil end portion, a lead-side protrusion or a non-lead-side protrusion formed to protrude upward in an axial direction of the stator core from a first oblique side portion, a second oblique side portion, a third oblique side portion, and a fourth oblique side portion, and a first oblique side portion, a second oblique side portion, a third oblique side portion, and a fourth oblique side portion. The lead-side protrusion or the non-lead-side protrusion is designed with a height to avoid interference between the protrusion-formed coils placed in the stator core.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: April 23, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Atsushi Watanabe, Fujio Ando, Masayoshi Haga, Manabu Kitamura
  • Patent number: 8405274
    Abstract: A stator of a motor includes a stator core having a plurality of teeth forming slots between any two adjacent teeth and a plurality of phase coils provided in the slots, each formed by wave winding and made of a continuous wire. Each phase coil includes a first wave winding bundle and a second wave winding bundle that is passed through a first slot and a second slot. The first slot is located adjacent to one side of a group of slots through which the phase coils other than said each phase coil are passed and the second slot is located adjacent to the other side of the group of slots. The first wave winding bundle is passed through a third slot and a fourth slot. The third slot is located adjacent to the first slot on the opposite side of the first slot from the group of slots and the fourth slot is located adjacent to the second slot on the opposite side of the second slot from the group of slots.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: March 26, 2013
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Taku Adaniya, Shinichi Okuyama, Hiroshi Fukasaku
  • Patent number: 8397368
    Abstract: A method of manufacturing a stator includes the steps of: (1) forming substantially planar electric wires each of which includes in-slot portions to be received in slots of a stator core and turn portions to be located outside the slots to connect adjacent pairs of the in-slot portions; (2) rolling each of the planar electric wires by more than one turn into a spiral shape; (3) forming a stator coil by assembling the rolled electric wires through elastic deformation thereof; and (4) assembling the stator core and the stator coil to form the stator. Further, in the rolling step, each of the planar electric wires is rolled by plastically deforming the turn portions into circumferentially-extending sections each having a predetermined curvature. Furthermore, a curvature ratio of a radially-outermost one of the circumferentially-extending sections is set to be greater than that of a radially-innermost one of the same.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: March 19, 2013
    Assignee: Denso Corporation
    Inventors: Akito Akimoto, Noboru Taniguchi, Atsuo Ishizuka
  • Publication number: 20120217836
    Abstract: To provide a motor in which a cage coil formed of a wave winding conductor wire wound in plural turns and with bent portions is inserted in an integral type stator core. The motor including a stator provided with a wave winding coil using a flat conductor and a stator core, and a rotor provided with a rotor shaft is configured such that the wave winding coil includes the cage coil formed of a first wave winding wire assembly wound in plural turns, this assembly being formed of a plurality of bent-end wave winding conductor wires formed in a meandering pattern and overlapped in sequence with displacements from each other, a coil end part of the cage coil at one end is bent toward the rotor with respect to in-slot portions of the stator core, and the coil end part at the one end is positioned closer to an axis of the rotor than an inner peripheral surface of the stator core is.
    Type: Application
    Filed: October 14, 2010
    Publication date: August 30, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Atsushi Watanabe, Masayoshi Haga, Shingo Hashimoto
  • Patent number: 8253296
    Abstract: The wire 30 forming the stator winding 20 includes the in-slot portions 40 to be disposed in the slots 14 and 15 of the stator core 12 and the turned portions 42 connecting the in-slot portions 40 disposed in the circumferentially different slots 14 and 15. The turned portions 42 formed on axial opposite end sides of the stator core 12. The crank portion 44 which does not twist is formed at substantially the center of the turned portion 42. Steps are formed at sections of the turned portion 42 which protrude outside the stator core 12 from the slots 14 and 15. Further, the turned portion 42 of the wire 30 also has two steps 48 formed between the substantially central crank portion 44 and each of the steps 46 formed at the protruding sections of the turned portion 42.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: August 28, 2012
    Assignee: Denso Corporation
    Inventors: Shinji Kouda, Hiroaki Kajiura, Masahiro Takada