Dynamoelectric Machine Patents (Class 29/596)
  • 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
  • Patent number: 10418887
    Abstract: A stator assembly method includes a step of inserting coils into slots by pressing coil end portions of the coils from the inner peripheral side toward the radially outer side of a stator core using a pressing member while suppressing fall of the coil end portions by supporting the coil end portions from the radially outer side of the stator core using a fall suppression member.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: September 17, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Shingo Hashimoto, Shingo Sato
  • Patent number: 10418866
    Abstract: A multiple-polyphase AC dynamo-electric machine, wherein each of the plurality of the teeth provides the flange part to the NS magnetic pole part of the rotor side end part, the stator core has a magnetic connection part which connects the flange parts adjoined each other in the NS magnetic pole of each of the plurality of teeth, the connection part is provided corresponding to each of the slot and an inner peripheral side of the corresponding slot, the radial width of the connection part are smaller than both of the circumferential width of the teeth, thereby the radial widths of the connecting sections are smaller than both the circumferential widths of the teeth and the radial widths of the flanges, voltages generated when the magnetic flux generated by current flowing through one group of windings links with the windings in another group are suppressed effectively.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: September 17, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yu Hirotani, Yuji Takizawa, Sachiko Kawasaki, Masatsugu Nakano, Toyoaki Udo, Satoru Akutsu
  • Patent number: 10411568
    Abstract: A method of manufacturing a laminated stator core includes: blanking an electrical steel sheet at 1st to Nth (N is a natural number equal to or greater than 2) positions arranged in the width direction of the electrical steel sheet to form 1st to Nth blank members, and laminating the 1st to Nth blank members to form a laminated stator core. The shape or arrangement of at least one odd-shaped part of a plurality of odd-shaped parts in the kth (k is a natural number of 1 to N) blank member differs from the shape or arrangement of at least one odd-shaped part of a plurality of odd-shaped parts in the mth (m is a natural number of 1 to N and satisfying m?k) blank member such that the shapes of given two blank members do not agree with each other.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: September 10, 2019
    Assignees: Mitsui High-tec, Inc., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hirokazu Arakawa, Go Kato, Syo Yamaguchi, Shinya Sano
  • Patent number: 10411529
    Abstract: A stator includes a yoke, teeth, insulating members, a first ribs, coils, annular members and adhesive bodies. The insulating members each have circumferential wall and a flange. The flange includes a plate wall. The first ribs protrude from the respective flanges. The coils each wound on the outsides of the circumferential wall and the first ribs of each of the teeth. The annular members close teeth distal end sides of cavities. A first hole and a second hole are provided in the plate wall. The turning passage contains varnish charged through the injection hole.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: September 10, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takashi Matsumoto
  • Patent number: 10404109
    Abstract: A stator core includes an end portion, a first pole arm, and a second pole arm. The first pole arm includes two first connecting arms extending from the end portion and spaced from each other, and two first pole claws respectively formed at ends of the first connecting arms. The first pole claws are spaced from each other with an opening formed there between. The second pole arm includes two second connecting arms axially stacked to the two first connecting arms respectively and two second pole claws respectively formed at distal ends of the two second connecting arms. The two second connecting arms are connected with each other.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: September 3, 2019
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Yue Li, Chui You Zhou, Yong Wang, Yong Li
  • Patent number: 10404120
    Abstract: A stator includes a stator core having a plurality of slots arranged in a circumferential direction and a stator coil formed by wave-winding continuous coil wires on the stator core. Each of the continuous coil wires has in-slot portions received in the slots and turn portions each of which connects, on the outside of the slots, one pair of the in-slot portions. Each of the continuous coil wires has, at root parts of the turn portions respectively connected with ends of the in-slot portions, first crank portions that are radially bent. An amount of radial bending of the first crank portions is set to be half of a radial width of the in-slot portions.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: September 3, 2019
    Assignee: DENSO CORPORATION
    Inventors: Atsuo Ishizuka, Akito Akimoto, Masayuki Takiguchi
  • Patent number: 10396638
    Abstract: A stator manufacturing apparatus includes an insertion tool inserted into a stator core, the insertion tool having a plurality of holding grooves formed on an outer periphery, the insertion tool being configured such that a pair of side portions of a stator coil are disposed in two of the holding grooves separated by a predetermined width; and a pressing tool having a plurality of plate-like pushers narrowed toward tips arranged on a pressing body in correspondence with the positions of the plurality of holding grooves of the insertion tool. The pressing tool is configured to push the pairs of side portions of the stator coils inserted in the holding grooves radially outwardly and insert the side portions into the corresponding slots. A recessed groove enabling grippers to be inserted when the stator coil is disposed using the grippers for gripping the pair of side portions is formed on the outer periphery of the insertion tool.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: August 27, 2019
    Assignee: NITTOKU ENGINEERING CO., LTD.
    Inventor: Kaoru Noji
  • Patent number: 10389217
    Abstract: A fluid generating device and an electric apparatus utilizing the fluid generating device are provided. The fluid generating device includes a motor and an impeller driven by the motor. The motor is a single phase direct current brushless motor which includes a stator and a rotor. The stator includes a stator core and a stator winding. The stator core includes an outer ring portion, teeth extending inwardly from the outer ring portion, a pole shoe formed at the tooth. Slot openings are formed between the pole shoes. The rotor is received in a receiving chamber defined by the pole shoes. Inner surfaces of the pole shoes and the rotor form therebetween a substantially even air gap. The presence of even air gap can reduce the cogging torque of the motor, thus reducing the startup current and noise of the motor.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: August 20, 2019
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Yue Li, Kwong Yip Poon, Chui You Zhou, Jie Chai, Wen Liang Li, Lin Ping Gui, Tao Zhang, Qiang Zhou
  • Patent number: 10374473
    Abstract: A stator includes a yoke, teeth, insulating members, a first ribs, coils, annular members and adhesive bodies. The insulating members each have circumferential wall and a flange. The flange includes a plate wall. The first ribs protrude from the respective flanges. The coils each wound on the outsides of the circumferential wall and the first ribs of each of the teeth. The annular members close teeth distal end sides of cavities. A first hole and a second hole are provided in the plate wall. The turning passage contains varnish charged through the injection hole.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: August 6, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takashi Matsumoto
  • Patent number: 10361611
    Abstract: A coil end bending jig pushes down a plurality of coil ends of coil segments held by a toric stator core, the plurality of coil ends being arranged on a same circumference. The coil end bending jig includes a plurality of bending units each having a bending tooth that makes contact with a corresponding one of the coil ends, and a guide member having a plurality of guiding slits into which the plurality of bending units is inserted, respectively. The plurality of guiding slits extends from an inner peripheral side of the stator core to an outer peripheral side of the stator core so as not to intersect with each other when viewed from an axial direction of the stator core.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: July 23, 2019
    Assignee: TOYOTA JIDOSHA KABUSIKI KAISHA
    Inventor: Yasuyuki Hirao
  • Patent number: 10355565
    Abstract: In a method for manufacturing a stator of the present invention, positions of stamping out the first stator core and the second stator core are respectively set so that an angular difference between respective rolling directions thereof becomes 360 degrees÷(4×motor pole pair number), when laminating the first stator core which is not circular stamped out from a first electromagnetic steel sheet, and the second stator core which is not circular stamped out from a second electromagnetic steel sheet. For the second stator core, orientation of a shortest segment among virtual segments linking opposite sides or diagonals which pass through a center thereof is not orthogonal to the rolling direction, and at least two are stamped out alongside in a width direction.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: July 16, 2019
    Assignee: FANUC CORPORATION
    Inventors: Hidetoshi Uematsu, Akihiro Hosoda
  • Patent number: 10355567
    Abstract: A joining method for coil ends includes: pressing a pair of tapered portions such that a pair of first pressing jigs provided with a pair of detent portions is brought closer to the coil ends along an axial direction of the stator core, the pair of detent portions being fitted to the tapered portions; fixing axial positions of the pair of tapered portions such that the pair of detent portions is fitted to the pair of tapered portions so that the pair of tapered portions is sandwiched in a circumferential direction; fixing radial positions of the pair of tapered portions such that the pair of tapered portions is sandwiched by a pair of second pressing jigs so that the tapered portions of the pair of tapered portions make contact with each other; and welding a contacting portion where the tapered portions make contact with each other.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: July 16, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke Mizushima, Yasuyuki Hirao
  • Patent number: 10348153
    Abstract: A blower motor assembly including a blower motor case for housing a blower motor therein. A controller retention portion of the blower motor case is configured to accommodate a controller within the blower motor case. An airflow inlet is defined by the blower motor case at an exterior of the blower motor case. An airflow passageway of the blower motor case extends from the airflow inlet to the controller retention portion to direct airflow to the controller. A flange of the blower motor case is at an end of the airflow passageway that is opposite to the airflow inlet. The flange is arranged opposite to the controller retention portion and to the controller to direct to the controller airflow that has passed through the airflow inlet and the airflow passageway.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: July 9, 2019
    Assignees: DENSO International America, Inc., DENSO CORPORATION
    Inventors: Brian Belanger, Christian Rippel
  • Patent number: 10336299
    Abstract: In a brushless wiper motor, first and second pressing claws (43a and 43b) are formed on an outer periphery (OP) of steel sheets (34a) forming a stator core (34), and press-fitted to an inner periphery (IP) of the motor housing unit (31) so that the stator core (34) is fixed to the motor housing unit (31), base end portions of the first and second pressing claws (43a and 43b) are respectively connected to first and second walls formed on the outer periphery (OP) of the steel sheets (34a), and tip end portions of the first and second pressing claws (43a and 43b) each serves as a free end, and are directed in a circumferential direction of the stator core (34).
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: July 2, 2019
    Assignee: Mitsuba Corporation
    Inventors: Naoki Kojima, Masaaki Kimura, Yukiyoshi Iso
  • Patent number: 10333360
    Abstract: An iron core member has: first divided yoke portions; second divided yoke portions alternately arranged with the first divided yoke portions; a first tooth portion extending from one circumferential end of each first divided yoke portion, a second tooth portion extending from the other circumferential end; a third tooth portion extending from one circumferential end of the second divided yoke portion on the second tooth portion side, and a fourth tooth portion extending from the other circumferential end. A tooth end portion of the first tooth portion and a tooth end portion of the adjacent fourth tooth portion are integrally joined at a first tooth end joint portion, and a tooth end portion of the second tooth portion and a tooth end portion of the adjacent third tooth portion are integrally joined at a second tooth end joint portion, thereby providing one continuous sheet of the core member.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: June 25, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tatsuro Hino, Akira Hashimoto, Masaya Inoue, Akihiro Yamamura, Shogo Okamoto, Atsushi Sakaue, Hironori Tsuiki
  • Patent number: 10333373
    Abstract: A method for manufacturing a stator operatively associated with an inner and outer circumferential jigs including sequentially ordered steps of inserting segment coils, each constituting of a pair of straight portions connected with a connecting portion in a U-like shape, in slots of a stator core, rotating a twisting ring while distal end parts of the pairs of straight portions protruding on an opposite side to the connecting portions are engaged with ring grooves of the twisting ring to twist and shape in one direction the distal end parts located in odd-numbered positions from an outer circumferential side or an inner circumferential side in a radial direction and twist and shape the distal end parts located in even-numbered positions in an opposite direction to the one direction, and welding the distal end parts twisted in the one direction and the distal end parts twisted in the opposite direction.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: June 25, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Fujio Ando, Hirotsugu Iwamoto
  • Patent number: 10305355
    Abstract: A stator manufacturing method in which a coil including a plurality of coil units formed by winding a rectangular wire is fitted in a cylindrical core having a plurality of slots extending in a radial direction and opening in a core inner peripheral surface so that the slots are distributed in a circumferential direction, the rectangular wire being a linear conductor having a rectangular section.
    Type: Grant
    Filed: December 24, 2015
    Date of Patent: May 28, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Kiyotaka Koga, Shingo Hashimoto, Shingo Sato, Hisanori Shirai
  • Patent number: 10298102
    Abstract: A method of manufacturing a laminated core is provided. The manufacturing method includes the steps of feeding a belt-like sheet of core material to a progressive die, stamping out core pieces having a first shape from the core material, stacking more than one of the core pieces having the first shape to obtain a first laminate block, stamping out core pieces having a second shape from the core material, stacking more than one of the core pieces having the second shape to obtain a second laminate block, discharging a laminate including the first laminate block and the second laminate block from the progressive die, changing the lamination order of the laminate blocks constituting the laminate, and integrating the laminate after the lamination order of the laminate blocks are changed.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: May 21, 2019
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Katsuhiro Sasaki, Takashi Fukumoto, Mei Ogata
  • Patent number: 10284062
    Abstract: This disclosure relates to a method for manufacturing a workpiece for a segmented laminated core. This method includes (A) feeding a plate for processing drawn from a roll thereof to a progressive die and (B) stamping out a workpiece in the progressive die, the workpiece including a plurality of pieces aligned in the circumferential direction with a circumferential part. At the step (B), an overall portion configured to be each piece of the workpiece is displaced in the thickness direction of the plate for processing, with portions on both sides of the piece being fixed, to form at least one cutting line across a region configured to be the circumferential part.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: May 7, 2019
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Yusuke Hasuo, Masahiro Izumi
  • Patent number: 10284057
    Abstract: A highly versatile stator manufacturing device is provided. A stator manufacturing device 7 includes: an engagement portion 8 engageable with a distal end of an extension portion 5 of each of a plurality of conductor segments 4 extending from a plurality of extension positions that differ in a radial direction R in each slot 3 of a stator core 2; a circumferential direction drive portion 9 that drives the engagement portion 8 engaging with the extension portion 5 in a circumferential direction C, to bend the extension portion 5; and a radial direction drive portion 10 that drives the engagement portion 8 in the radial direction R.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: May 7, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takahiro Kimura, Takeshi Yanagisawa, Hiroyuki Yabe
  • Patent number: 10274126
    Abstract: A system and method for servicing a generator rotor of a turbine are presented. The system includes a support device for supporting the rotor. The support device has a surface. A contact point is established on the surface where the rotor contacts the surface. A location of the contact point along the surface may be variable based on a diameter of the rotor. The support device may be able to accommodate a plurality of different rotors having a plurality of different diameters.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: April 30, 2019
    Assignee: SIEMENS ENERGY, INC.
    Inventors: James B. Edwards, Cezar Cisloiu
  • Patent number: 10270315
    Abstract: A cooling arrangement cast into a generally cylindrical stator having longitudinal channels provided on an internal surface thereof is described herein. The cast cooling arrangement comprising a cast heat-storing element and conduits defining a cooling path having an inlet and an outlet.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: April 23, 2019
    Assignee: TM4 Inc.
    Inventors: Jean-Philippe Desbiens, François Dubé, Danny Dupuis, Jean-Philippe Dextraze, Éric Latulipe
  • Patent number: 10263479
    Abstract: Provided is a stator for an electrical rotating machine. The stator includes a stator core having a magnetic material. The stator core includes a cylindrical yoke extending in an axial direction of the stator. The yoke includes a plurality of yoke pieces having fracture surfaces disposed relative to each other along a circumferential direction of the yoke. The fracture surfaces of mutually adjacent yoke pieces of the plurality of yoke pieces have the fracture surfaces thereof in direct contact with each other. The stator core further includes a plurality of teeth extending in a radial direction from the yoke. Each of the teeth is provided on at least one of the plurality of yoke pieces. The stator further includes a stator coil wound around the teeth.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: April 16, 2019
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Takayuki Kobayashi
  • Patent number: 10250092
    Abstract: Winding bodies are configured such that radially inner terminals of a conductor wire extend outward at a first axial end of an armature core from a radially innermost position inside slots, and radially outer terminals of the conductor wire extend outward at the first axial end of the armature core from a radially outermost position inside the slots, and respective phase windings of an armature winding are configured by directly joining together the radially inner terminals and by directly joining together the radially outer terminals of the winding bodies that constitute identical phases.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: April 2, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hironori Tsuiki, Atsushi Sakaue, Hiroyuki Akita, Akira Hashimoto
  • Patent number: 10243419
    Abstract: Arrangement for the stator cooling of an electric motor, comprising a stator lamination package with a large number of axial stator laminations lined up axially, next to one another, and several axial winding grooves in the stator lamination package for the holding of corresponding stator windings. In accordance with the invention, a radial recess formed in one of the stator laminations leads into each of the winding grooves, wherein the radial recess communicates with a cooling liquid conduit provided on the stator lamination package for the delivery of cooling liquid.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: March 26, 2019
    Assignee: DEERE & COMPANY
    Inventors: Rainer Gugel, Norbert Fritz, David Mueller
  • Patent number: 10236751
    Abstract: A method of manufacturing a stator core includes punching out core members from an electrical steel sheet in three rows arrangement side by side along a width direction of the electrical steel sheet. Each of the core members has connecting projections. The connecting projections project radially outward from an outer periphery of the core member. The punched out core members are stacked to form the stator core. Each of the core members in two of the three rows arrangement have a connecting projection angled at a first angle from the width direction of the electrical steel sheet. Each of the core members in a third row having a connecting projection angled at a different second angle from the width direction of the electrical steel sheet.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: March 19, 2019
    Assignee: TOSHIBA INDUSTRIAL PRODUCTS AND SYSTEMS CORPORATIO
    Inventors: Takayuki Akatsuka, Toyonobu Yamada, Tadashi Morishima, Tooru Yamagiwa, Chidai Isaka, Motoyasu Mochizuki, Takashi Hanai, Youichi Seo
  • Patent number: 10236738
    Abstract: The armature winding is configured by mounting into slot pairs n types of winding bodies that are each configured by winding a conductor wire for m turns into a helical shape, where m is a natural number that is greater than or equal to two, the n types of winding bodies have different spacings between rectilinear portions that are linked by coil ends, are housed in n adjacent pairs of slot pairs, and are configured so as to be concentric, the coil ends include a top portion at an approximately central portion, and the radial displacement at the top portion is approximately a×d, where a is a natural number that is greater than or equal to 1 and less than or equal to (m?1), and d is a radial thickness of the rectilinear portions that are housed inside the slots.
    Type: Grant
    Filed: February 18, 2013
    Date of Patent: March 19, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hironori Tsuiki, Hiroyuki Akita, Atsushi Sakaue, Masaya Inoue, Akira Hashimoto
  • Patent number: 10230281
    Abstract: The present invention facilitates size and weight reduction by enhancing a coil space factor. A rotating electrical machine according to the present invention is provided with a core having a slot that is continuous in the axial direction, a winding provided within the slot, and an insulating member provided between the slot and the winding and is characterized in that a first pyramid-frustum surface of the insulating member that is provided on the side of the insulating member that is inserted into the slot and/or a second pyramid-frustum surface that is provided on the side of the insulating member into which the winding is inserted is provided at an axial end of the core.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: March 12, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Genzo Iwaki, Shuya Hagiwara
  • Patent number: 10218234
    Abstract: An electric motor in which at least one of the rotor and the stator has an asymmetric design is disclosed. The electric motor is divided into a number of segments, where each segment has an equal number of windings and an equal number of poles. The physical construction of each pole within a segment is identical and the number of turns of each winding within a segment is identical. The asymmetry is formed by varying the physical construction of the either the rotor or the stator within one segment from the corresponding construction of the rotor or stator in the other segments. The asymmetries are designed to improve one or more operating characteristics such as sensorless performance, torque ripple, or cogging torque in the motor.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: February 26, 2019
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Xikai Sun, Kun Wei, Gennadi Sizov, Jingbo Liu
  • Patent number: 10201882
    Abstract: A motor-driven machine tool unit having a stator unit and at least one rotor unit having a rotor shaft that is rotatable about an axis of rotation. The rotor unit includes at least one first bearing unit arranged in the end region of a tool and/or workpiece receptacle, and a second bearing unit arranged at the opposite end region for mounting the rotor shaft in the stator unit. At least one electrical power transmission unit for transmitting electrical power between the stator unit and the rotor unit is provided. The problem addressed by the invention is that of better satisfying the increasing demands on modern machine tools or machine tool units. This problem is solved by the electrical power transmission unit is arranged in the end region opposite the tool and/or workpiece holder and/or on the second bearing unit.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: February 12, 2019
    Assignee: Franz Kessler GmbH
    Inventor: Joachim Van Sprang
  • Patent number: 10199897
    Abstract: A stator has a field winding, the winding comprising a plurality of axial conductors connected at their ends to form at least one circuit with a number of turns. Each axial conductor is disposed within a tubular axial insulation member, the tubular axial insulation members being disposed within a stack of laminations. The axial conductors and the tubular insulation members are radially distributed at equal angles. The position of the axial conductors and the tubular insulation members is predetermined.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: February 5, 2019
    Assignee: Coreteq Systems Ltd.
    Inventors: Philip Head, Hassan Mansir
  • Patent number: 10199911
    Abstract: An orientation magnetization device includes plural orientation magnetization yokes and plural orientation magnetization magnets, and molds field magnets while a rotor core is disposed in a magnetic circuit that is formed by assembling the orientation magnetization yokes and the orientation magnetization magnets into an annular shape. When the rotor core is disposed in the magnetic circuit, protruding portions are disposed at portions of the respective orientation magnetization yokes facing the rotor core. Auxiliary magnets are disposed in gaps between the respective orientation magnetization magnets and the rotor core, on opposite sides of each protruding portion in a circumferential direction of the orientation magnetization device. Each protruding portion and each auxiliary magnet extend in an axial direction of the orientation magnetization device, and are skewed with respect to the axial direction of the orientation magnetization device.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: February 5, 2019
    Assignee: JTEKT CORPORATION
    Inventors: Taiki Takeuchi, Hiroshi Yoshikawa, Naotake Kanda, Yoshiyuki Shibata, Koji Tachi
  • Patent number: 10192652
    Abstract: A bus bar unit includes a plurality of bus bars that electrically connects coils of each phase of a rotary electric machine and an external power supply, a plurality of caps that separately covers portions of the plurality of bus bars and separately hold the plurality of bus bars, and an outer holding section that is formed of an insulating material, that collectively covers the plurality of caps, and that is formed in a state in which the plurality of bus bars are electrically insulated.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: January 29, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hidetomo Fujiwara, Takuya Yoshizawa, Kazuya Hirota, Yoshifumi Onishi
  • Patent number: 10186924
    Abstract: The corona shield can be applied in electric machines in a faster manner by using radiation-cured materials.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: January 22, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Mario Brockschmidt, Stefan Kempen, Friedhelm Pohlmann, Guido Schmidt
  • Patent number: 10181762
    Abstract: In an insulator to insulate teeth of a stator, which is a three-phase electric motor and which has nine teeth or more, and a conducting wire wound around the teeth, slits for parallel wire connection to be conducting wire extraction parts only in parallel wire connection, slits for serial wire connection to be conducting wire extraction parts only in serial wire connection, and shared slits to be conducting wire extraction parts in both of the serial wire connection and the parallel wire connection are provided.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: January 15, 2019
    Assignee: Fujitsu General Limited
    Inventor: Takashi Suzuki
  • Patent number: 10180143
    Abstract: A method of manufacturing a turbocharger which allows easy performance of assembly operations of a motor rotor and a stator in a motor overhang structural turbocharger is provided.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: January 15, 2019
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Takeshi Tsuji, Yoshihisa Ono
  • Patent number: 10177631
    Abstract: An electric machine having a rotor, stator and housing. The rotor includes a radially mounted array of permanent magnets and the stator includes a plurality of electromagnets radially positioned around the rotor. The stator is encapsulated such that the stator encapsulant is in thermal contact with housing structures, for example the housing end plates. In some embodiments, the entire perimeter portion of the housing is in thermal contact with the stator or the stator encapsulant. The stator encapsulant provides for device robustness and thermal transfer from the stator to the housing. The thermal conductivity of the encapsulant may be enhanced by mixing an additive to the encapsulant to increase thermal conductivity.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: January 8, 2019
    Assignee: ZERO E TECHNOLOGIES, LLC
    Inventors: Thomas H. Hopkins, Felipe J. Castillo, Scott T. Graham, Keith W. Klontz
  • Patent number: 10170952
    Abstract: Coils that constitute an armature winding are produced by winding a conductor wire that has a rectangular cross section, the coils each include: four rectilinear portions that are inserted into a pair of slots; and three coil end portions that link the four rectilinear portions consecutively by each connecting together end portions of two selected rectilinear portions, the coils being mounted into the armature core so as to be arranged at a pitch of one slot in a circumferential direction, the coil end portions include: a bulging portion that protrudes axially outward in a convex shape; and oblique portions that link the two connected rectilinear portions and the bulging portion, the bulging portion has a crank portion that displaces radial positions of the two connected rectilinear portions by a set amount, and a cross-sectional area of the bulging portion is smaller than a cross-sectional area of the oblique portions.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: January 1, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kohei Egashira, Atsushi Sakaue, Tatsuro Hino, Kazunori Muto, Hironori Tsuiki
  • Patent number: 10164507
    Abstract: The present invention refers to a shaded-pole single-phase motor convertible into a permanent magnet motor of the type that comprises a front casing, a stator element, a rotor element, a plurality of windings placed over the protruding poles of the stator element, and a rear casing, wherein the stator element presents a square-shape configuration with the four protruding poles rotated 45° relative to the horizontal and vertical symmetry axes in order to be aligned with the four corners of the stator element. The stator new configuration enables optimizing the use of lamination material during manufacturing and assembling the sheet packages of the stator element and rotor element; furthermore, the protruding poles, by being rotated 45° in the stator element, enable a reduction of electric losses in its windings and a decrease in the operative temperature of both the stator element and the rotor element, which enables an increase of the motor operation efficiency.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: December 25, 2018
    Inventors: Julián Romero-Beltran, Rodrigo Romero-Pérez
  • Patent number: 10148157
    Abstract: A method of manufacturing a stator for a rotary electric machine by disposing coils in a plurality of phases on a plurality of teeth of a stator core, one coil on one tooth, wherein in sequentially disposing the coils in the plurality of phases on the teeth, one coil on one tooth, toward one side in the circumferential direction of the stator core, the one end portion of each of the coils in each phase is inserted from the one side in the axial direction of the stator core, or from a direction that is orthogonal to the axial direction of the stator core, to be disposed between the one end portion and the other end portion of the immediately preceding coil in a separate phase disposed on the tooth so as to be aligned with the other end portion of the coil in the same phase.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: December 4, 2018
    Assignees: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shingo Hashimoto, Hiroyuki Tanaka, Takanori Ota, Osamu Nakagawa, Shingo Sato, Hirotaka Kawaura, Norihiko Akao, Tetsuya Sugimoto
  • Patent number: 10141820
    Abstract: Method for removing U-shaped winding elements for an electromagnetically excitable core of an electric rotation machine from a setting tool, wherein the U-shaped winding elements are set and are initially located in the setting tool, wherein in one step the winding elements are partially lifted out from the setting tool, so that parts of rod sections of the winding elements are freely accessible from the outside, characterized in that the winding elements are removed from the setting tool by means of a removal device, by gripping the rod sections.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: November 27, 2018
    Assignee: SEG Automotive Germany GmbH
    Inventors: Peter Schreiber, Paul Borrmann, Klaus Hilke, Dittmar Kleemann, Hans-Juergen Schwarz
  • Patent number: 10121582
    Abstract: An integrated inductor comprises a first winding (C1) and a second winding (C2); a first internal magnetic core in the first winding (C1) and a second internal magnetic core in the second winding (C2); and at least one external magnetic core (M) outside the first winding (C1) and the second winding (C2), used for being connected to end portions of the first and second internal magnetic cores to form a magnetic path, the external magnetic core (M) being formed by multiple sub-magnetic cores joint with each other; the magnetic conductivity of at least one sub-magnetic core of the multiple sub-magnetic cores is greater than the magnetic conductivity of other sub-magnetic cores, and the at least one sub-magnetic core at least covers a part of end faces of the first internal magnetic core and the second internal magnetic core. The integrated inductor can alleviate the phenomenon of flux leakage, and can reduce costs of the magnetic cores.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: November 6, 2018
    Assignee: Eaton Intelligent Power Limited
    Inventors: David Zheng, Wen Wang, Xizheng Liao, Denis Liu
  • Patent number: 10102953
    Abstract: An apparatus and method for holding permanent magnet components, particularly on a rotor of an electrical machine. A magnet carrier (10) comprises a channel (30) suitable for receiving an encircling magnet retainer (20) and a method of manufacturing a magnet assembly (100) comprises providing a magnet carrier (10) comprising a channel (30), mounting a magnet (60) on the magnet carrier (10), and encircling the magnet (60) and magnet carrier (10) with a magnet retainer (20), wherein the magnet retainer (20) passes through the channel (30).
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: October 16, 2018
    Assignee: Magnomatics Limited
    Inventors: David James Powell, Jeffrey George Birchall
  • Patent number: 10103610
    Abstract: A manufacturing method of a core for a rotary electric machine includes: forming a crimped portion on both a first magnetic steel sheet and a second magnetic steel sheet. The crimped portion has a recessed portion that is recessed from a first surface and a protruding portion that protrudes from a second surface in a position on the reverse side of the recessed portion on the second surface; and stacking the first magnetic steel sheet and the second magnetic steel sheet while curving the first magnetic steel sheet such that a first surface side bulges out, and inserting the protruding portion of the crimped portion of the second magnetic steel sheet into the recessed portion of the crimped portion of a curved first magnetic steel sheet.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: October 16, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kouichi Mine
  • Patent number: 10097054
    Abstract: Embodiments of laminated stator cores suitable for usage in high temperature applications are provided, as are embodiments of methods for manufacturing high temperature laminated stator core. In one embodiment, the method includes obtaining a plurality of coated laminates each comprising a laminate over which a coating precursor layer is formed. The coating precursor layer contain inorganic dielectric particles having a softening point. The plurality of coated laminates are arranged in a laminate stack, which is then fired at temperatures equal to or greater than the softening point of the inorganic dielectric particles. During firing, a compressive force is applied to the laminate stack sufficient to consolidate the inorganic dielectric particles into a plurality of coherent interlaminate dielectric layers electrically insulating and bonding together the plurality of coated laminates as the high temperature laminated stator core.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: October 9, 2018
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: James Piascik, Reza Oboodi, Paul Chipko, Martin Carlin Baker, Jimmy Wiggins, Leroy Allen Fizer