Dynamoelectric Machine Patents (Class 29/596)
  • Patent number: 10848024
    Abstract: Provided is a stator for a rotary electric machine capable of fixing a stator core and a coil while preventing internal contamination of the rotary electric machine. A stator (5) for a rotary electric machine includes a stator core (11) having teeth (21) and slots (23) alternately in a circumferential direction, a coil (13) mounted on the stator core (11), and an insulating layer (35) and a foamed adhesive layer (37) disposed between an inner circumferential surface of the slot (23) and the coil (13). The formed adhesive layer (37) is disposed such that an end portion of at least one side thereof in an axial direction of the stator core (11) is disposed further inside than an end surface (11a) of a side of the stator core (11) in the axial direction.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: November 24, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventor: Tadashi Yamaguchi
  • Patent number: 10840750
    Abstract: There is provided a compressor motor in which a teeth member and a yoke member are bonded while inhibiting deformation of bridge portions and which is capable of decreasing drop of torque due to a leakage magnetic flux. A stator is constituted of a teeth member 26 in which inner end portions of adjacent teeth 27 are continuous in a bridge portion and on which wires are wounded, and a yoke member 28 bonded to an outer side of the teeth member to form a magnetic path, the yoke member includes press-fitting concave regions 32 which are opened inwardly and into which outer end portions of the teeth are press-fitted, and inner side surfaces 32A of the press-fitting concave regions which face each other possess projecting shapes, respectively, and both side surfaces 27B of each of the outer end portions of the teeth are formed in a recessed shape which matches the shape of the inner side surfaces of the press-fitting concave regions.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: November 17, 2020
    Assignee: SANDEN HOLDINGS CORPORATION
    Inventors: Noriyuki Kobayashi, Takahiro Ikeda
  • Patent number: 10833549
    Abstract: In the armature winding of a rotary electric machine, in a series coil portion group, the numbers of turns of conducting wire in the coil portions that have an electrical angular phase difference of ?k that satisfies ?1<?k?m are different than the numbers of turns of conducting wire in the ?1 and ?m coil portions, and are also different than the numbers of turns of conducting wire in the coil portions that are adjacent to the ?k coil portions on two sides in a circumferential direction of the stator core, and phases of the ?k coil portions are also different than phases of each of the coil portions that are adjacent to the ?k coil portions on the two sides in the circumferential direction.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: November 10, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kodai Okazaki, Masatsugu Nakano, Kazumasa Ito, Yu Hirotani, Hiroko Ikeda, Koji Kawamura
  • Patent number: 10826340
    Abstract: A rotor for a synchronous motor includes teeth arranged at regular intervals, project from a rotor core in the radial direction, and taper in a cross-section in the direction of the rotor core. The rotor also includes tangentially magnetized magnets that are arranged in gaps between the teeth and are trapezoidal in cross-section. The teeth are connected via a flexible joint to the rotor core, and the teeth are deflected in the tangential direction such that in every other gap between two teeth, first magnets rest against outer stops at the ends of the teeth facing away from the rotor core.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: November 3, 2020
    Assignee: ETEL S.A.
    Inventors: Alfred Gause, Alessandro Fasolo, Nicolay Komarevskiy, Johann Pourchet
  • Patent number: 10804775
    Abstract: A method for manufacturing stators of dynamoelectric machines, the stators being formed as an assembly of pole segments; the apparatus comprising a seat where the assembly of pole segments are seated. An engagement assembly engages first ends of the pole segments for translation of the pole segments from the seat to a transfer device. A first holding assembly comprises a first plurality of holding members for clamping the pole segments to hold the pole segments as an assembly of pole segments. The first holding assembly being arranged on the transfer device moveable to transfer the assembly of pole segments from a first position to a second position. A containing assembly is located at the second position and provided with a second plurality of holding members for holding the assembly of pole segments. The second plurality of holding members are positioned on the containing assembly to surround the assembly of pole segments that are located at the containing assembly.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: October 13, 2020
    Assignee: ATOP S.p.A.
    Inventors: Massimo Ponzio, Rubino Corbinelli, Stefano Niccolini
  • Patent number: 10804777
    Abstract: The present invention pertains to a stator manufacturing method and a device therefor. All of segments are twisted in order to obtain a stator, the linear sections of the segments being inserted into slots in a stator core. The segments on the inner peripheral side are subsequently twisted after the segments on the outer peripheral side are untwisted. In order to achieve this, e.g., a fourth spindle that is positioned on the outermost peripheral side and is one of the first through fourth spindles for twisting the segments is disconnected from a fourth motor and brought to a non-rotatable state. The following is then performed in sequence: the third spindle is disconnected from a third motor and twisted, and the second spindle is disconnected from the second motor and twisted.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: October 13, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takashi Yoshida, Daiki Sakai, Hideaki Onda
  • Patent number: 10799934
    Abstract: The present invention discloses a machining process for manufacturing a motor housing by using metal titanium, including the following machining steps: Calendar process is adopted, use stamping equipment to stamp the base of the titanium motor housing, apply lubricant on the surface of the die before stamping, and attach a lubricating film on the surface of metal titanium to be stamped; Calendar process is adopted, use stamping equipment to stamp the barrel-shaped titanium motor housing, apply lubricant on the surface of the die before stamping, and attach a lubricating film on the surface of metal titanium to be stamped, and after stamping, a barrel-shaped housing with a barrel depth to port diameter ratio of 1.2˜1.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: October 13, 2020
    Inventor: Wei Zhu
  • Patent number: 10797551
    Abstract: A motor enables an insulator and an iron core to be secured without a reduction in the efficiency of the motor. A motor includes an iron core and an insulator disposed on an axial end surface of the iron core. The iron core includes at least one of grooves on an outer circumferential portion. Each of the grooves is arranged in an axial direction of the iron core on the outer circumferential portion from the end surface. The insulator includes at least one of claws protruding downward in the axial direction from a surface in contact with the iron core. The claws are fitted into the grooves.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: October 6, 2020
    Assignee: Mitsubishi ElectricCorporation
    Inventor: Kazunori Adachi
  • Patent number: 10794465
    Abstract: There is provided an electric actuator in which a speed reduction mechanism and an output portion are disposed adjacent to each other in a radial direction in an opening portion of a housing main body, a cover member has a speed reduction mechanism cover which faces and surrounds the speed reduction mechanism, an output portion cover which faces and surrounds the output portion, and a constricted portion which connects the speed reduction mechanism cover and the output portion cover, the cover member is fixed to the housing main body by a plurality of caulking portions provided on a side wall portion, and, between two adjacent caulking portions interposing the constricted portion therebetween, one of the two caulking portions of the speed reduction mechanism cover is fixed toward a central axis of the speed reduction mechanism, and the other is fixed toward a central axis of the output portion.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: October 6, 2020
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Yutaka Uematsu, Kazumi Shinkai, Shun Kato, Shuichi Kinjo, Kohei Osuga, Tadayuki Hatsuda
  • Patent number: 10797572
    Abstract: The disclosure relates to a method for producing a winding of a winding carrier of an electric machine. The method includes providing a laminated core. The laminated core has an axis and a first slot for accommodating a first winding segment for producing the winding. The first slot extends in the direction of the axis. The first slot is arranged on a first circle as viewed in the direction of the axis, through the circle center point of which first circle the axis extends. The method includes: arranging the first winding segment in the first slot, where a first region of the first slot protrudes from the laminated core; and bending the first region by applying a first force acting in the direction of the axis and by applying a first force acting tangentially to the first circle onto the first region in a first direction tangentially to the first circle.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: October 6, 2020
    Assignee: Vitesco Technologies GmbH
    Inventors: Detlef Beyer, Rolf Jungnickel, Michalis Mames, Ricus Müller, Christoph Radtke
  • Patent number: 10784728
    Abstract: A rotor for an electrical machine has a rotor core with a center line, which forms an axis of rotation. The rotor core can be subdivided by a plurality of imaginary radial planes, which extend radially from the axis of rotation at regular angular intervals. For each radial plane, at least one pair of winding grooves is formed, which extend through the rotor core to either side of the radial plane with the radial plane serving as the plane of symmetry. A winding is arranged in each pair of winding grooves, in winding receiving areas of the winding grooves, which winding extends through the two winding grooves of the pair. Each winding groove is bounded in its winding receiving area on its side facing the assigned radial plane by a side face, which continues in a manner free from projections, in the sense of projections in a direction away from the radial plane, from the winding receiving area to the radially outer end of the winding groove.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: September 22, 2020
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Maria Bauer, Dragoljub Duricic, Zakaria El Khawly, Daniel Loos, Andreas Mayr
  • Patent number: 10784727
    Abstract: A rotor for a salient pole, wound field, synchronous machine includes a rotor core, a plurality of pole bodies, and a field winding. Each pole body of the plurality of pole bodies includes a pole core, a pole shoe, and a single flux barrier. The single flux barrier forms an enclosed space filled with a material having a magnetic permeability between zero and 1000 relative to a magnetic permeability of a vacuum. The single flux barrier includes a top wall, a shaft mounting wall configured to mount adjacent a shaft when the rotor is mounted to the shaft, and a plurality of interior walls connected between the top wall and the shaft mounting wall. The plurality of interior walls extend parallel to and centered between a first pole core face and a second pole core face of the pole core that extend from the rotor core.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: September 22, 2020
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Thomas A. Lipo, Wenbo Liu
  • Patent number: 10778073
    Abstract: An automotive auxiliary device includes an electric drive motor which is brushless and electronically commutated. The electric drive motor includes a rotatable motor rotor which defines a longitudinal rotor axis, a motor stator, and at least one stator-sided hall-sensor. The motor rotor includes a rotor shaft, a magnet carrier, and at least one permanent magnet which generates at least two rotor poles. The permanent magnet is fixed to the magnet carrier to provide a free inner space between the rotor shaft and the permanent magnet. The permanent magnet includes an axial protruding portion which axially protrudes from at least one side of the magnet carrier. The motor stator comprises at least two stator coils which are arranged radially around the rotatable motor rotor. The hall-sensor is arranged in the free inner space and is provided as a type of radial rotor detection sensor.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: September 15, 2020
    Assignee: PIERBURG PUMP TECHNOLOGY GMBH
    Inventors: Viktor Schroeder, Andreas Wulf, Frank Buerger, Alessandro Malvasi
  • Patent number: 10778059
    Abstract: An electrical submersible pump assembly has a motor with a stator stack of limitations. The stack has slots through which magnet wires are wound. An encapsulate surrounds and bonds the magnet wires together within each slot. The encapsulate includes ceramic particles within a polymer adhesive matrix. The polymer matrix may be a fluoropolymer adhesive. Each of the magnet wires may have an electrical insulation layer surrounding a copper core. The ceramic particles are rounded and much smaller than a cross-sectional area of each of the magnet wires. At least some of the magnet wires may be in contact with a perimeter of the slot. The ceramic particles may be porous.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: September 15, 2020
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventor: Ping Duan
  • Patent number: 10763709
    Abstract: A stator assembly includes a stator core. The stator core includes a yoke and teeth. Each of the teeth includes a neck and a tip. The neck includes a first stacking portion, a second stacking portion, a first plane and a second plane. The first stacking portion and the second stacking portion are arranged opposite to each other, and the first plane and the second plane are arranged opposite to each other. The first stacking portion and the second stacking portion are formed by stacking silicone steel sheets of the neck, and the first plane and the second plane are outer surfaces of silicone steel sheets at two terminal ends of the neck in a stacking direction.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: September 1, 2020
    Assignee: ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO., LTD.
    Inventors: Hongwei Wang, Junfeng Bao, Qiang Ning
  • Patent number: 10763005
    Abstract: An insulative assembly includes an insulative mica-based carrier film and first and second resistive grading layers joined to opposite sides of the mica-based carrier film. The first resistive material layer is configured to engage one or more conductors and insulate the one or more conductors from at least one other conductor. A method for creating an insulative assembly for one or more conductors includes obtaining an insulative mica-based carrier film, depositing a first resistive grading layer on a first side of the mica-based carrier film, and depositing a second resistive grading layer on an opposite, second first side of the mica-based carrier film.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: September 1, 2020
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Christopher Celebrese, Lili Zhang, Wei Zhang, Anil Duggal, Weijun Yin
  • Patent number: 10749402
    Abstract: The rotary electric machine includes: a stator that includes: a stator core; and a stator coil; a ring member that accommodates the stator so as to hold the stator core in an internally fitted state; a housing case formed into a floored cylindrical shape with an opening at a first end portion, and that accommodates the ring member and the stator; and a cover mounted onto the first end portion of the housing case so as to cover the opening of the housing case, wherein a first end portion of each of the ring member and the housing case is fixed by fastening to the cover such that a fastening direction of each is oriented in an axial direction, and a second end portion of the ring member is fitted into and held by the housing case by means of an interfitting member.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: August 18, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Naoki Ohashi, Masaya Inoue, Koichi Ojima, Kazuyuki Iwamoto
  • Patent number: 10749416
    Abstract: A method is for manufacturing a core plate having an annular core back and teeth extending from the core back toward the center. The core plate is obtained by performing a punching step, a winding step, a straining step and an annealing step. At the straining step, compressive strain is applied to the core back or the band-shaped core back that is to be the core back after winding. At the annealing step, the core back or the band-shaped core back is annealed to be recrystallized after the applying of strain.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: August 18, 2020
    Assignees: DENSO CORPORATION, NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Tetsuya Aoki, Takeshi Senoo, Keiichi Okazaki, Satoshi Doi, Hiroshi Fujimura, Hiroaki Sato
  • Patent number: 10749417
    Abstract: A stator core constituting a stator at least includes first core members and a second core member. Each first core member includes a first annular portion in which slots are formed and first tab portions. On the other hand, the second core member includes a second annular portion in which the slots are formed and that is superposed on the first annular portions, and has a shape obtained by removing the first tab portions from the first core member. Electrical conductors are partially fitted in the overlapping slots.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: August 18, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Keiichiro Oka, Kenji Masai
  • Patent number: 10742101
    Abstract: Provided are an insertion method and an insertion apparatus for efficiently and reliably inserting a plurality of coil elements aligned in a ring shape into respective slots of a stator core. In an insertion method of inserting, the insertion method includes a coil element alignment process S3 of forming an assembly body 50 by assembling the plurality of coil elements 40 in a ring shape in the state where the turn portions 42 alternately overlap each other, a supporting process S42 of supporting the assembly body 50 by using the turn portions 42, and an insertion process S45 of allowing the assembly body 50 and the stator core 60 to be close to each other and inserting the leg portions 41 of the coil elements 40 of the assembly body 50 into the slots 61.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: August 11, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kenichi Ohno, Yutaka Matsumoto, Shinichi Kawano, Daisuke Ueno
  • Patent number: 10734145
    Abstract: The present invention relates to a coil (1) for an inductor (6), comprised by metal wire (2) wound circular around a centre axis (C), wherein the wire has an electrically insulating layer (3) insulating each turn of the wire in the winding from neighbouring turns, the shape of the complete winding, building up the coil (1), is substantially toroidal having a substantially elliptic cross section, wherein the thermal heat conductivity is above 1 W/m*K more preferably above 1.2 and most preferably above 1.5. The invention further relates to a magnetic core (7) suitable for an inductor (6), where in the core is made of a soft magnetic composite material made of metallic particles and a binder material, said particles are in the range of 1 ?m-1000 ?m, particles that are larger than 150 ?m are coated with a ceramic surface to provide particle to particle electrical insulation, wherein the volume of magnetic, metallic particles to total core volume is 0.5-0.9.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: August 4, 2020
    Assignee: Comsys AB
    Inventors: Oscar H. Bjarnasen, Tord Cedell
  • Patent number: 10717116
    Abstract: A method of slurry infiltration and cleaning to fabricate a ceramic matrix composite (CMC) component with an internal cavity or bore comprises inserting a number of rods into a hollow portion of a porous fiber preform, thereby forming a rod arrangement substantially filling the hollow portion. Each of the rods has a low-friction surface comprising a coefficient of static friction of about 0.1 or less. The porous fiber preform is exposed to a slurry comprising particulate solids in a liquid carrier, and the slurry infiltrates the porous fiber preform. Some fraction of the particulate solids is deposited within interstices of the porous fiber preform to form an impregnated fiber preform, and another fraction of the particulate solids is deposited within the hollow portion as excess slurry. After slurry infiltration, the rods are withdrawn from the hollow portion, and at least some of the excess slurry is removed with the rods.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: July 21, 2020
    Assignee: ROLLS-ROYCE HIGH TEMPERATURE COMPOSITES INC.
    Inventor: Christopher Barrett
  • Patent number: 10715001
    Abstract: To improve insulation reliability of a dynamo-electric machine. A stator or a dynamo-electric machine using the stator according to the present invention includes a stator iron core in which a plurality of slots aligned in the circumferential direction are formed, a plurality of segment coils inserted into the slots and formed nearly into a U-shape, and an insulator arranged between the segment coils, and the insulator has a part of the insulator formed thicker than the other part of the insulator.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: July 14, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Kenichi Nakayama, Naoki Nishikawa
  • Patent number: 10673289
    Abstract: Provided is a high-powered low profile motor. The motor includes a stator (20) facing a rotor (50) while having a gap from the rotor (50). The stator (20) includes a ring-shaped connection core (10) formed by connecting a plurality of divided cores (5a) and an insulator (24) formed as if surrounding the connection core (10) by resin molding by an insertion forming. An inner diameter (r) of the connection core (10) is set smaller than inner diameters (R) of the divided cores (5a) bent in a half moon shape when connected.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: June 2, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yukinori Nakagawa, Minoru Yoshida, Yasuyuki Sonoda, Yasmasa Nagasaki
  • Patent number: 10658909
    Abstract: The present disclosure relates to a stacker and a method to assemble a stator core of an electric machine. Disclosed is a method for stacking a stator core of an electric machine, with the steps of providing a support adjacent to the stator frame to carry at least a sheet for the stator core, grabbing the at least a sheet with an arm arranged outside the stator core, the arm has a holding device for clamping the at least a sheet, guiding the at least a sheet inside the stator frame in a horizontal direction, and arranging the at least a sheet to compose the stator core.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: May 19, 2020
    Assignee: General Electric Technology, GmbH
    Inventors: Sanjiv Kumar Mishra, Massimiliano Visintin, Sabine Wernekinck, Maria-Jose Vazquez-Meleiro
  • Patent number: 10658896
    Abstract: A method for producing a coil of a compressor (1) which can be electrically driven, a coil which is produced in accordance with this method, and a stator and a compressor which can be electrically driven. The production process for the coil includes the steps of: producing (100) a first winding (101) of the coil (12), producing (200) a second winding (102) of the coil (12), and compacting (300) the first winding (101) and the second winding (102) by virtue of an external action of force. A cross-sectional area (111, 112, 111?, 112?) of a wire of the first winding (101) and of the second winding (102) is deformed.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: May 19, 2020
    Assignee: BorgWarner Inc.
    Inventors: Hans Lehner, Dietmar Metz
  • Patent number: 10644556
    Abstract: Provided is in an armature coil formed by arranging a plurality of coil conductors on a lower metal die having a tapered groove that is narrower toward an inner side. The coils are pressed using an upper metal die having an end portion narrower than the width of the groove. The coils are formed in a substantially trapezoidal shape which gets narrower toward the radially inner side and the cross-sectional areas of the plurality of the coil conductors in the slot are each substantially the same and the circumferential width thereof is formed narrower as the coil conductor is arranged toward the radially inner side; and one coil conductor is formed in a convex shape and another coil conductor is formed in a concave shape along the convex shape.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: May 5, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Koji Tamura, Shuichi Tamura, Akihiro Yamamura, Issei Doi, Hiroyuki Matsuo, Yasukazu Nishimura, Sachiko Kawasaki, Akihiko Mori
  • Patent number: 10622850
    Abstract: The present invention relates to a stator core for improving the fixing properties of a magnet wire, and a motor in which the same is applied. Provided is a stator core which comprises a protrusion pattern part for fixing the distal end portion of a magnet wire, and thus eliminates a process of fixing the wire using a separate member during a wiring process, thereby improving processability and preventing an insulating film of the magnet wire from being damaged by an external force such as vibration.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: April 14, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Bong Bae Kong
  • Patent number: 10615674
    Abstract: A rotating electrical machine with one or more heating elements is provided in that the one or more heating elements mount circumferentially on an inside of a frame or enclosure of the rotating electrical machine. The rotating electrical machine comprises an enclosure with multiple cooling fins, insulated stator windings positioned inside the enclosure, and a heating element positioned inside the enclosure. The heating element provides suitable heating of the insulated stator windings through heated air to prevent condensation while being physically decoupled from an insulation of the insulated stator windings.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: April 7, 2020
    Assignee: SIEMENS INDUSTRY, INC.
    Inventors: Eric Bucklen, William Dixon, Rajendra Mistry, Claude Turner
  • Patent number: 10615671
    Abstract: A stator includes: a stator core in which a coil strand is wound around each of a plurality of teeth portions formed in an annular yoke portion; an annular plate that is disposed at a position overlapping an annular portion of the stator core in a direction along an axial center of the stator core; a plurality of terminals which are supported by the plate and to which end portions of a plurality of the coil strands drawn out from the stator core are respectively connected; and a resin that encloses the stator core and the plate in a state where a part of the plurality of terminals is exposed.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: April 7, 2020
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroki Endo, Hiroyuki Kawada
  • Patent number: 10605248
    Abstract: A fan has an electronically commutated external-rotor motor serving to drive it. The motor has an internal stator (20) having a stator lamination stack (64) and a winding arrangement (66; 164, 166, 168, 170) associated with the stack. The internal stator has a central opening (149) for journaling a shaft (42). The fan further has a permanent-magnet rotor (28) separated from the internal stator (20) by a magnetically effective air gap (99). The internal stator (20) has a plastic coating (56, 58) that surrounds the stator windings, forms a bearing tube for journaling the shaft (42), and defines a wall element (62), implemented integrally with the plastic coating (56, 58), forming a compartment or cavity (108) for electrical components (112) of the motor. The plastic coating, bearing tube and compartment are preferably molded in a single working step.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: March 31, 2020
    Assignee: ebm-papst St. Georgen GmbH & Co. KG
    Inventors: Thomas Wagner, Francisco Rojo
  • Patent number: 10594183
    Abstract: A stator assembling method where each of the plurality of the concentrically wound coils has vertexes oriented outward in a axial direction in the planned coil end portions, and a distance in the axial direction between the vertexes of the planned coil end portions on both sides in the axial direction of each of the plurality of concentrically wound coils is gradually reduced toward the conductive wire mounted on the inner diameter side of the stator core from the conductive wire mounted on the outer diameter side of the stator core.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: March 17, 2020
    Assignee: AISIN AW CO., LTD.
    Inventors: Shingo Hashimoto, Shingo Sato, Kazuya Iwatsuki, Kiyotaka Koga, Koji Hirabaru
  • Patent number: 10590933
    Abstract: A rotary compressor including a cylindrical compressor housing provided with an inlet unit of a refrigerant and a discharging unit of the refrigerant, a compressing unit which is disposed inside the compressor housing and includes a cylinder and a piston for compressing the refrigerant sucked in from the inlet portion, a rotation shaft provided with the piston of the compressing unit, and a motor which includes a cylindrical stator and a rotor that is provided on another end side of the rotation shaft and that rotates inside the stator, and which drives the compressing unit via the rotation shaft, in which an outer circumferential portion of the stator includes a concave portion and is fixed to an inner circumferential portion of the compressor housing in a transition fit state, and in which the compressor housing includes a weld portion which is joined to the concave portion of the stator.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: March 17, 2020
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Yuji Komai, Masayuki Onomura, Tetsuo Fukuda, Naoya Morozumi
  • Patent number: 10594190
    Abstract: Rotors for electrical machines and methods of fabricating the same are disclosed. Electrical machine rotors may include a hollow non-magnetic shaft, an active region, and a plurality of coolant passages extending within the active region. The hollow non-magnetic shaft may extend along an axis and have an exterior surface that defines a shaft space extending along the axis. At least a portion of the active region may be disposed within the shaft space.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: March 17, 2020
    Assignee: ABB Schweiz AG
    Inventors: Darren D. Tremelling, Yujing Liu
  • Patent number: 10587174
    Abstract: A method of assembling an electric motor comprises axially translating a rotor of a rotor assembly in a first direction through a longitudinal bore of a stator, a first centering ring of the rotor assembly preventing a first end of the rotor from contacting an internal surface of the longitudinal bore; rotatably supporting a first end of the rotor assembly longitudinally extending from the rotor with a first support member; resting a second centering ring of the rotor assembly on the internal surface of the longitudinal bore; rotatably supporting a second end of the rotor assembly longitudinally extending from the rotor with a second support member; and axially translating the rotor assembly in a second direction, opposite the first direction, to place the rotor assembly in a position in which both the first centering ring and the second centering ring are outside the longitudinal bore.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: March 10, 2020
    Assignee: Franklin Electric Co., Inc.
    Inventor: Heinz Barg
  • Patent number: 10581291
    Abstract: Disclosed are a stator (10) for an electric machine (12) and a method for manufacturing a stator of said type which comprises a stator body (34) that has radial stator teeth (14); each stator tooth (14) accommodates exactly one coil section (18) of an electric winding (16); the winding (16) consists of exactly two separate winding strands (24, 25) which are wound from exactly two separate winding wires (22) and each of which has three phases (26) comprising at least two coil sections (18, 17) each.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: March 3, 2020
    Assignee: Robert Bosch GmbH
    Inventor: Tamas Csoti
  • Patent number: 10581303
    Abstract: A laminated iron core includes a plurality of blanked iron core pieces laminated together, a continuity of side parts of the iron core pieces configuring a side surface of the laminated iron core. The side part of each iron core piece includes a specific light reflection area having a prescribed width along a circumferential direction, where the specific light reflection area has different light reflection characteristics from the other area of the side part of the iron core piece, and a striped pattern, configured by the specific light reflection areas, exists on the side surface of the laminated iron core.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: March 3, 2020
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Hirokazu Arakawa, Takashi Maruyama, Kenichi Takasaki
  • Patent number: 10574098
    Abstract: A motor stator includes a stator core and a number of stator windings. The stator core includes a stator yoke and a plurality of stator tooth wrapped by a bobbin formed with an over-molding process, and further correspondingly wound around by stator windings. The stator teeth are connected to an inner surface of the stator yoke. A motor including the above motor stator and a rotor is also provided. The rotor includes a rotor core and a rotary shaft fixed relative to the rotor core. The rotor core is received in the bobbin and in magnetic coupling with the stator teeth.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: February 25, 2020
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Kar Wai Lam, Yi Li
  • Patent number: 10566867
    Abstract: A stator that includes a core formed by stacking annular steel sheets on each other and having teeth and slots provided between the teeth; and a plurality of continuous coils each continuously formed from a single conductor wire and each having a plurality of slot housed portions to be housed in the slots which are different from each other, a coil end portion on one side in an axial direction that connects the slot housed portions to each other, and a coil end portion on the other side in the axial direction that connects the slot housed portions to each other.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: February 18, 2020
    Assignee: AISIN AW CO., LTD.
    Inventors: Kiyotaka Koga, Shingo Hashimoto, Shingo Sato
  • Patent number: 10547224
    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: Grant
    Filed: April 23, 2013
    Date of Patent: January 28, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Makoto Hattori, Masahiko Asai, Kazuki Niwa
  • Patent number: 10547225
    Abstract: A method for producing an electric motor provided with a stator core configured by laminating a required number of annular electromagnetic steel sheets having a plurality of tooth portions on an inner periphery thereof. The circumferential widths of the tooth portions become gradually narrower in a stepwise fashion toward an uppermost surface and an undermost surface of the plurality of laminated electromagnetic steel sheets, whereby the shoulder portions on both sides in a circumferential direction of the tooth portions smoothly change. A flexible, planar insulating member is provided having a first portion of a shape similar to a planar shape of said electromagnetic steel sheet, and further comprising flexible ear portions at positions corresponding to shoulder portions on both sides in a circumferential direction of the tooth portions.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: January 28, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Makoto Hattori, Masahiko Asai, Kazuki Niwa
  • Patent number: 10530200
    Abstract: An end cap mounted on the stator element is provided with the same cut-out as arranged on the stator segment so that both parts can be secured on a retainer system for winding processing. The end cap are arranged to retain insulating materials.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: January 7, 2020
    Assignee: CONTROL TECHNIQUES DYNAMICS LIMITED
    Inventors: Sujitha Jayasoma, Andrew Parsons
  • Patent number: 10516312
    Abstract: A stator coil that includes a first coil portion including a pair of first slot-housed portions respectively arranged on an outer side of a first slot of the stator core in a radial direction and on an outer side of a second slot of the stator core in the radial direction; a second coil portion including a pair of second slot-housed portions respectively arranged on an inner side of the first slot in the radial direction and on an inner side of a third slot in the radial direction, the third slot being arranged across the first slot from the second slot in a circumferential direction; and a third coil portion including a pair of third slot-housed portions respectively arranged on an inner side and on an outer side in the radial direction.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: December 24, 2019
    Assignees: AISIN AW CO., LTD., HAYASHIKOGYOSYO CO., LTD.
    Inventors: Toru Kuroyanagi, Ko Kajita, Takahiko Hobo
  • Patent number: 10511203
    Abstract: A motor stator structure includes a main body and multiple stopper plates. The main body has multiple magnetic poles and a shaft hole. The magnetic poles outward extend from the main body. Each magnetic pole has a free end outward extending from the main body. The shaft hole passes through the main body between two ends thereof. The stopper plates are respectively correspondingly assembled with the free ends of the magnetic poles. In the motor stator structure, the windings are more densely wound on the magnetic poles to enhance the magnetization efficiency.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: December 17, 2019
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Ching-Min Yang, Kuo-Chen Chang, Yen-Chih Lu
  • Patent number: 10511202
    Abstract: Slot accommodation portions of single coils forming an armature coil are arranged so as to be stacked in the radial direction in a slot. On the anti-wire-connection side, a one-side extending portion which is a coil end extending from the slot accommodation portion in the first layer, and a one-side extending portion which is a coil end extending from the slot accommodation portion in the second layer, extend in the same direction. No insulation sheet is provided in intervals between coil ends extending in the same direction, such as the extending portions (23b) and (21b) and extending portions (21d) and (22d).
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: December 17, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kohei Egashira, Atsushi Sakaue, Tatsuro Hino, Shinkichi Sawa, Masashi Nakamura
  • Patent number: 10468937
    Abstract: An electric motor includes: a housing having a first rotor bearing and a stator support surface; a cantilever stator that includes a lamination stack, a first side of the lamination stack abutting the stator support surface and a second side of the lamination stack abutting a stator endbell that has a second rotor bearing, wherein the cantilever stator is held by way of tie rods attaching the stator endbell to the housing; and a rotor in the cantilever stator, the rotor held by the first and second rotor bearings.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: November 5, 2019
    Assignee: TESLA, INC.
    Inventors: Edwin M. Pearce, Jr., Jim Robbins, Scott Heines, David F. Nelson, Gary A. Pinkley, Michael Balsamo, Augusto E. Barton
  • Patent number: 10461601
    Abstract: A motor is provided to improve the damp proof or dustproof effect of the conventional motor. The motor includes an isolating housing, a sealing member and an inner assembly. The isolating housing includes first and second housing parts. A through-hole is formed between the first and second housing parts. The through-hole communicates an internal space of the isolating housing with an external space. The sealing member includes a frame portion and a wire receiving portion. The wire receiving portion is integrally formed with the frame portion. The frame portion is arranged between the first and second housing parts. The wire receiving portion is disposed at the through-hole. A lead wire is received in the wire receiving portion, and includes one end extending into the internal space of the isolating housing. The inner assembly is received in the internal space of the isolating housing and electrically connected to the lead wire.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: October 29, 2019
    Assignee: Sunonwealth Electric Machine Industry Co., Ltd.
    Inventors: Alex Horng, Sheng-Chieh Liang, Yi-Sheng Chen
  • Patent number: 10447123
    Abstract: An apparatus for inserting a magnet into a rotor iron core includes a magnet inserting unit configured to insert a permanent magnet into a magnet-insert hole formed along a lamination direction of a rotor iron core body in which a plurality of iron core pieces are laminated, and a guide member to be attached to the magnet inserting unit, and arranged in a space formed between the magnet inserting unit and the rotor iron core body and configured to communicate the magnet-insert hole of the rotor iron core body to a supply part for the permanent magnet formed in the magnet inserting unit.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: October 15, 2019
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Katsumi Amano, Hisatomo Ishimatsu
  • Patent number: 10438697
    Abstract: In the present invention, a control device for use in connection with a medical device or system in order to operate various functions of the medical device or system is provided that does not require a wired connection or internal power source for the operation of the control device. The control device in certain embodiments can take the form of a footpedal that is formed without electronics, without a printed circuit board (PCB), without a wireless module and without a battery. In this configuration the control device is formed to be entirely passive in operation, thus eliminating the issues with regard to control devices connected to medical devices and systems using wired connections and wireless transmission modules.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: October 8, 2019
    Assignee: General Electric Company
    Inventors: Pradeep Kumar Sridharan, Muthu Revathy Authuvan, Narasimha Murthy Vinay, Hiteshkumar Thakarshibhai Boda, Carlos Martinez Ferreira, Shijin Krishna
  • Patent number: 10439453
    Abstract: A stator includes a stator core has slots that are each provided between stator teeth disposed on the stator core. The insulation paper is disposed in the slot between the coil and the stator core defining the slot has a recess at a position adjacent to connection parts between side walls and a bottom wall of the insulation paper. The recess extends so as to be apart from the connection parts in one of a radial direction and the circumferential direction. The insulation members include a projection that is configured to be disposed inside the recess.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: October 8, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroyuki Hattori