Rotor Patents (Class 29/598)
  • Patent number: 10848039
    Abstract: A method of manufacturing a rotor core having a plurality of core members stacked together includes determining weight imbalances for the plurality of core members with respect to a central axis of the rotor core; combining the weight imbalances of the plurality of core members to determine a weight distribution of the rotor core; and displacing the weight imbalances of one or more of the plurality of core members to adjust a position of the weight distribution of the rotor core with respect to the central axis.
    Type: Grant
    Filed: September 4, 2017
    Date of Patent: November 24, 2020
    Inventors: Akira Nagai, Kenji Katsuki, Go Kato
  • Patent number: 10833622
    Abstract: In an electrified vehicle having a synchronous traction motor, an inverter is connected to stator windings by three power cables. If these cables are accidentally connected to the wrong windings, the resulting torque will not match the desired torque, and may even be in the wrong direction. To avoid this problem, a test is performed any time that the cables may have been unplugged and re-connected. The inverter is commanded to generate a rotating magnetic field while the rotor is held stationary, resulting in a positive and a negative response current. A relationship between a phase angle of the negative response current and the rotor position indicates which cables are connected to which windings. If the cables are incorrectly connected, the controller disables the motor and informs an operator which cables to swap to achieve correct connection.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: November 10, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Silong Li, Wei Xu, Jiyao Wang, Yinghan Xu
  • Patent number: 10821637
    Abstract: A resin injection apparatus includes: a mold die and a receiving die configured to hold a core body in an axial direction of the core body, the core body having a resin formation region serving as a region where resin is to be formed by injection of molten resin; a plurality of plungers; and a pot group attached to the mold die, the pot group including a plurality of pots proximately located next to each other in a direction. Each of the plurality of pots has a through hole in which a corresponding plunger of the plungers is insertable. The plurality of pots have a first coefficient of thermal expansion that is lower than a second coefficient of thermal expansion of the mold die.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: November 3, 2020
    Inventor: Hirotoshi Mabu
  • Patent number: 10826363
    Abstract: Electrical machines, components thereof, and methods for manufacturing the same are provided. In one aspect, methods for additively manufacturing a rotor assembly for an electrical machine is provided. The method includes additively printing the rotor core and shaft of the same material composition. In another aspect, an electrical machine is provided. The electrical machine includes a stator assembly that includes a stator core having a plurality of poles with magnetic slot wedges positioned between adjacent poles to reduce tooth harmonics. The electrical machine also includes a rotor assembly having a rotor core that is formed as a solid core. In yet another aspect, a rotor assembly for an electrical machine is provided that includes slots that reduce eddy current losses in the rotor core during operation of the electrical machine.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: November 3, 2020
    Assignee: GE Aviation Systems LLC
    Inventors: Hao Huang, Xiaochuan Jia
  • Patent number: 10807852
    Abstract: An electrically-driven rotor iron core magnetic steel chamber dispensing device effectuates dispensing in the gap between a magnetic steel chamber and a magnetic steel chunk of an electrically-driven rotor iron core. The electrically-driven rotor iron core magnetic steel chamber dispensing device includes a plurality of dispensing units each corresponding in position to one or more magnetic steel chambers. The dispensing units correspond in position to the magnetic steel chamber and are arranged in the circumferential direction of the electrically-driven rotor. The dispensing units are arranged outside the magnetic steel chamber and positioned proximate to the magnetic steel chamber or is located in the direction of the projection of the magnetic steel chamber. A dispensing opening of each dispensing unit corresponds in position to the magnetic steel chamber from below.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: October 20, 2020
    Assignee: GALLANT MICRO. MACHINING CO., LTD.
    Inventors: Hung-Neng Lai, Mu-Ching Chang, Chih-Hung Hsu
  • Patent number: 10804776
    Abstract: An injection molding device includes: a lower die that supports a rotor core; an intermediate die including a magnetizing mechanism; and an upper die including an injection die having a gate formed therein through which a molten bonded-magnet material supplied from a supply source is injected into a magnet insertion hole in the rotor core. The injection die has a cylindrical protruding portion at an end surface of which the gate is open. In the protruding portion, a magnetic-flux applying member containing ferromagnetic material is embedded with its side surface exposed at an outer peripheral surface of the protruding portion. The magnetizing mechanism is formed in an annular shape that can accommodate, inside its inner periphery, the rotor core and a distal end portion of the protruding portion by disposing yokes and permanent magnets alternately in the circumferential direction. Magnetic-path surfaces of the yokes radially face the side surface.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: October 13, 2020
    Assignee: JTEKT CORPORATION
    Inventors: Koji Tachi, Hiroshi Yoshikawa, Naotake Kanda, Taiki Takeuchi, Shohei Ogi
  • Patent number: 10784730
    Abstract: A rotor of a synchronous motor has a rotor core and a permanent magnet. The rotor core has a plurality of magnet insertion apertures and a plurality of slits. The permanent magnet is disposed in each of the magnet insertion apertures such that the magnetic poles of the permanent magnets are directed in a diameter direction. The slits are formed on an radially outer side of the magnet insertion aperture so as to align with intervals along a side of the permanent magnet. Magnetic paths are defined between adjacent slits. A gap that is a slot open in the axial direction of the rotor core is formed on the opposite side from a plurality of magnetic paths across the permanent magnet to adjust the magnetic resistance of the magnetic paths for making a change in magnetic flux between adjacent magnetic paths small.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: September 22, 2020
    Assignee: OKUMA CORPORATION
    Inventors: Takanori Yokochi, Tatsuya Shizu
  • Patent number: 10749419
    Abstract: A process for assembling a brushless motor-generator includes assembling a rotor formed from two spaced apart rotor portions having magnetic poles that drive magnetic flux circumferentially through the rotor portions and back and forth across an armature airgap formed between the rotor portions. An air core armature is formed by coating a substantially nonmagnetic armature form with a tacky adhesive layer, and winding armature windings into a winding pattern onto the substantially nonmagnetic form using wire made of multiple individually insulated conductor strands that are electrically connected in parallel but are electrically insulated from each other along their length when located inside the armature airgap, wherein the strands of said wire are diametrically held together by an outer serve. The winding of the armature form includes sequentially applying pressure to sections of said wire against the tacky adhesive layer.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: August 18, 2020
    Assignee: Revolution Electric Motor Company, Inc.
    Inventors: Christopher W. Gabrys, Timothy S. Rodgers
  • Patent number: 10742099
    Abstract: An apparatus for mounting a magnet to a rotor or stator of an electric machine includes a mounting element having a second mounting surface, wherein the mounting element is arranged to magnetically interact with the magnet to allow a magnetic force to magnetically attach the magnet to the second mounting surface; means for moving the mounting element having the magnet magnetically attached to the second mounting surface to a predetermined distance from a first mounting surface of the rotor or stator; and means for moving the mounting element away from the first mounting surface when the mounting element is at the predetermined distance from the first mounting surface. The apparatus further includes means for varying the flux density between the mounting element and the magnet.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: August 11, 2020
    Assignee: PROTEAN ELECTRIC LIMITED
    Inventor: Samuel Broadbridge
  • Patent number: 10727711
    Abstract: A motor rotor is configured to include a tubular inner sleeve, an annular magnet mounted on the outside of the inner sleeve in a radial direction of the inner sleeve, and a ring member disposed on the outside of the magnet in an axial direction of the inner sleeve and mounted on the outside of the inner sleeve in the radial direction of the inner sleeve. A linear expansion coefficient of the inner sleeve is higher than the linear expansion coefficient of the magnet. The ring member is mounted on the inner sleeve by shrinkage-fitting, and a gap is provided between the ring member and the magnet in the axial direction of the inner sleeve.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: July 28, 2020
    Assignee: IHI Corporation
    Inventor: Takuya Ozasa
  • Patent number: 10720822
    Abstract: In a brushless motor comprising a stator core having a plurality of teeth that protrude therefrom in radial directions, a front insulator which is attached to the stator core and which has a plurality of insulating portions that protrude therefrom along the direction of protrusion of the respective teeth, and a plurality of coils formed by magnet wire wound about each of the insulating portions at the respective teeth, a top face of the respective insulating portions of the front insulator is provided in advance with a deformable rib which is capable of being deformed by tension of the magnet wire wound thereabout, and the magnet wire is wound about the deformable rib to form the coils as the deformable rib is made to deform in correspondence to the external shape of the magnet wire.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: July 21, 2020
    Assignee: MAKITA CORPORATION
    Inventor: Akira Niwa
  • Patent number: 10720808
    Abstract: A method of making a permanent magnet rotor includes interference fitting pressure tools into bores in a rotor core as to deform material of the rotor core outwardly to bias permanent magnets mounted thereon in a radially outward direction against a fixation sleeve.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: July 21, 2020
    Assignee: Ingersoll-Rand Industrial U.S., Inc.
    Inventors: Esa H. Vikman, Petri Juhani Maki-Ontto, Fredrik Andreas Boxberg
  • Patent number: 10703037
    Abstract: A carrier assembly for injection molding a parison with internal threads. The carrier assembly may be used with an injection stretch blow molding machine that includes a core rod. The carrier assembly comprises a carrier insert surrounding a portion of the core rod. The carrier insert includes a thread-forming portion presenting an interior radial surface and an exterior radial surface. The interior radial surface is configured to be positioned adjacent to the core rod, and the exterior radial surface includes a threaded protrusion configured to extend away from the core rod. The carrier assembly also includes a pinion insert surrounding at least a portion of the threaded protrusion of the thread-forming portion of the carrier insert. The pinion insert is spaced apart from the thread-forming portion of the carrier insert so as to present a thread-forming cavity between the pinion insert and the carrier insert.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: July 7, 2020
    Assignee: R & D Tool & Engineering Co.
    Inventor: Michael J. Wilkerson
  • Patent number: 10707711
    Abstract: A rotor includes: a rotating member; a permanent magnet arranged in a plurality of rows along a circumferential direction of the rotating member and divided into a plurality of parts in a rotational axis direction X of the rotating member; and a cover tube divided into a plurality of parts in the rotational axis direction of the rotating member and covering an outer circumferential surface of the permanent magnet, the cover tube being formed of a fiber-reinforced plastic, wherein the plurality of permanent magnets in each row are arranged in an oblique direction with respect to the rotational axis direction of the rotating member, and the permanent magnets adjacent to the arrangement direction are disposed to be skewed in the circumferential direction, and at least one of the divided cover tubes covers an outer circumferential surface of one of the divided permanent magnets in the circumferential direction of the rotating member.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: July 7, 2020
    Assignee: FANUC CORPORATION
    Inventors: Shinobu Takano, Hisashi Maeda, Takafumi Kajiya
  • Patent number: 10700582
    Abstract: A squirrel-cage rotor of an asynchronous machine has a rotor bar (4) in a rotor stack (1), wherein the bar (4) can be tipped at a tipping point (11, 12, 13) when the bar (4) has not yet been cast. The rotor bar (4) can in this case have a contour on a radial outer face, wherein the bar (4) can also have a channel (27), the opening (29) in said channel being wider than the shoulders (32, 33) of the limbs (30, 31) which form the channel (27).
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: June 30, 2020
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Klaus Büttner, Michael Müller, Norbert Wöhner
  • Patent number: 10666101
    Abstract: A rotor for a rotary electric machine includes a rotor core including at least one low-rigidity portion rigidity; a plurality of magnets; a rotary shaft; a washer contacting at least one end surface of the rotor core in an axial direction of the rotor core; and a nut. An outer circumferential end of the washer is disposed more radially inward than the magnet holes, the washer has an outer circumferential shape with recesses and projections in which a distance from a rotation center to the outer circumferential end of the washer periodically varies, and a distance from the outer circumferential end of the washer to each low-rigidity portion is greater than a distance from the outer circumferential end of the washer to each magnet hole.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: May 26, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keiichi Kaneshige, Yuma Ishikawa
  • Patent number: 10648539
    Abstract: Electric motors are disclosed. The motors are preferably for use in an automated vehicle, although any one or more of a variety of motor uses are suitable. The motors include lift, turntable, and locomotion motors.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: May 12, 2020
    Assignee: Nidec Motor Corporation
    Inventors: William D. Moore, Philip S. Johnson, Joshua M. Biro, Paul G. Michaels, Payman Rassoolkhani
  • Patent number: 10608488
    Abstract: In one embodiment, a permanent magnet rotor is provided. The permanent magnet rotor includes at least one permanent magnet and a substantially cylindrical rotor core including an outer edge and an inner edge defining a central opening. The rotor core includes a radius R, at least one pole, and at least one radial aperture extending radially though the rotor core from the outer edge to a predetermined depth less than the radius. The at least one radial aperture is configured to receive the at least one permanent magnet. The rotor further includes at least one protrusion extending into the at least one radial aperture, the at least one protrusion positioned substantially along a bottom of the at least one radial aperture and configured to facilitate retention of the at least one permanent magnet within the at least one radial aperture.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: March 31, 2020
    Assignee: REGAL BELOIT AMERICA, INC.
    Inventors: Subhash Marutirao Brahmavar, Lester Benjamin Manz, Ludovic Andre Chretien, Changiz Rashidzadeh, Dan Mircea Ionel
  • Patent number: 10601289
    Abstract: The method according to the invention involves a hot-forging step and a cold-forging step that occurs after the hot-forging step. A polar wheel (10, 11) incorporating a plurality of finite chamfers (102) formed on exterior parts of the polar teeth (10g, 11g) is produced during the hot-forging step. According to the invention, the cold-forging step involves substeps of placing the polar wheel in a die, cold die-stamping the polar wheel with a first and a second blow in the axial direction of the polar wheel, upsetting material onto interior parts of the polar teeth (10g, 11g) so as to form magnet-housing grooves (100) and magnet lips (101).
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: March 24, 2020
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Henri Delianne, Michel Bocquel, Herve Ribot
  • Patent number: 10566860
    Abstract: The present invention discloses a motor comprising: a stator part; and a rotor assembly rotatably disposed with respect to the stator part, wherein the rotor assembly comprises: a ring magnet including an insertion hole with a shaft disposed therein and a plurality of first grooves formed at one side thereof along a first imaginary circle; and a core member including a body portion disposed between the shaft and the insertion hole, and an extension portion covering the plurality of first grooves, wherein the extension portion comprises a plurality of second grooves deviated from a plurality of first imaginary straight lines which pass from a center of the first imaginary circle respectively through the plurality of first grooves.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: February 18, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Il Sik Won
  • Patent number: 10536060
    Abstract: A method for producing an electric rotary machine including a rotor magnetic mass formed by a stack of superimposed electrical sheets containing housings, and a plurality of permanent magnets inserted in the housings, the housings being provided with a plurality of lugs for locking the permanent magnets in the housings.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: January 14, 2020
    Assignee: MOTEURS LEROY-SOMER
    Inventors: Alban Marino, François Turcat, Stéphane Dufau, Mario Pereira
  • Patent number: 10516324
    Abstract: A step motor includes a stator and a rotor. The stator includes a stator core and stator windings. The stator core includes a ring shaped yoke and a plurality of teeth extending inwardly from the ring shaped yoke. The rotor is rotatably mounted with respect to the stator. The rotor includes a permanent magnet member surrounded by the plurality of teeth. The stator windings are wound around the plurality of teeth to form a plurality of stator poles. The stator core are formed from a core strip with High magnetic conductive, the core strip are bent to enable opposite ends of the core strip to be connected with each other. The step motor of the present invention has a simplified structure and enhanced efficiency.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: December 24, 2019
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Yue Li, Chui You Zhou, Yong Wang, Yong Li
  • Patent number: 10511198
    Abstract: There is provided a rotor for a rotary electrical machine for improving mechanical strength of the rotor against centrifugal force. The rotary electrical machine is provided with a stator, and a rotor disposed with a gap from the stator, which has a rotor core. The rotor includes a magnet insertion hole, and a permanent magnet inserted into the magnet insertion hole. A clearance part is formed at a position of the magnet insertion hole corresponding to a corner of the inserted permanent magnet, which has a facing surface that is formed to face a surface of the permanent magnet via a gap. The facing surface of the clearance part has inflection points so that each of obtuse angles is formed by the two facing surfaces contiguous with the inflection points.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: December 17, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yuji Kano, Hiroshi Hamano, Yasuyuki Saito, Ryoji Kobayashi, Yosuke Umesaki, Manabu Oshida
  • Patent number: 10505432
    Abstract: A rotor includes: conductors having a bar shape; a first end ring joined to one ends of the conductors by friction stir welding, at least a surface opposite to a surface from which the conductors extend being stirred by the friction stir welding; a second end ring joined to other ends of the conductors by friction stir welding, at least a surface opposite to a surface from which the conductors extend being stirred by the friction stir welding; and an iron core disposed between the first and the second end rings, having a cylindrical shape, and including a plurality of insertion holes through which the respective conductors are insertable in a central axis direction of the iron core.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: December 10, 2019
    Assignee: NHK Spring Co., Ltd.
    Inventors: Noriyoshi Kaneda, Shota Nishihama
  • Patent number: 10498202
    Abstract: The manufacturing method for a rotor includes steps of: applying an adhesive to a first surface of a magnet material member that becomes a permanent magnet after magnetization, the adhesive being applied such that a total thickness of the magnet material member and the adhesive is less than a radial width of a magnet insertion aperture; disposing a rotor core such that an axial direction thereof is horizontal, and inserting the magnet material member into a magnet insertion aperture that is positioned vertically uppermost among the magnet insertion apertures so as to orient the adhesive vertically upward; positioning each of the magnet material members by pressing the magnet material member against an inner wall surface on an outer circumferential side of the magnet insertion aperture after inserting the magnet material member into each of the magnet insertion apertures; and curing the adhesive after the magnet material member is positioned.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: December 3, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hirohisa Yokota, Akihiro Yamamura, Yoshinobu Sugimoto, Shinji Sano
  • Patent number: 10490790
    Abstract: Provided is a battery module, which includes an array for battery cells, an elastic body disposed with respect to the array, a restraining member that restrains the array via the elastic body in an arranging direction of the battery cells, a plurality of harnesses that extend in the arranging direction and have connecting terminals of tips thereof connected to electrode terminals of the predetermined battery cells, and a binding member that binds the plurality of harnesses into a harness bundle. A binding position of the harnesses which is caused by the binding member is located at a side opposite to the elastic body relative to a connecting position between the electrode terminal and the connecting terminal, and the harness that branches off from the binding member has a flexure between the binding position and the connecting position.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: November 26, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Masahiro Yamada, Hiromi Ueda, Hirokuni Akiyama
  • Patent number: 10491062
    Abstract: A rotor may include a planar lamination having permanent magnets arranged therein, and an inner edge defining an opening configured to receive a driveshaft. The planar lamination may include a driveshaft key, and a relief notch and scallop disposed on each side of the driveshaft key. The relief notch and scallop may distribute stress imparted to the driveshaft key and reduce deformation due to centrifugal loads during rotation of the rotor. The relief notches may be next to the driveshaft key. The relief notches may be sandwiched between the scallops. The inner edge may include additional scallops.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: November 26, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Benedikt Groschup, Franco Leonardi
  • Patent number: 10476359
    Abstract: Provided is a motor rotor comprising a rotor core having a plurality of punched holes, a plurality of magnets placed on an outer circumferential surface of the rotor core or placed inside the rotor core, and a resin for fixing the plurality of magnets to the rotor core, wherein in plan view, each of the punched holes has at least one first inner surface section which coincides with an arc of a perfect circle and at least one second inner surface section which does not coincide with any arc of the perfect circle and, in plan view, the second inner surface section extends from one end point of an arc subtending a central angle smaller than 180° in the perfect circle to the other end point of the arc by passing outside the perfect circle.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: November 12, 2019
    Assignee: FANUC CORPORATION
    Inventor: Akira Nishifukumoto
  • Patent number: 10468954
    Abstract: A spindle motor includes a stationary unit and a rotating unit. The rotating unit is rotatable with respect to the stationary unit in a state in which the stationary unit is aligned with a central axis. The stationary unit includes a stator core and coils. The stator core includes a cylindrical core back and teeth units extending radially outward from an outer circumferential portion of the core back. The coils are defined by a conductive wire wound around each of the teeth units. The rotating unit includes a magnet located radially outside the teeth units. An axial length of the magnet is shorter than an axial length of the teeth unit. A first angle corresponding to a circumferential width of the teeth unit is smaller than a second angle corresponding to a circumferential gap between the adjacent teeth units.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: November 5, 2019
    Assignee: NIDEC CORPORATION
    Inventors: Kazuya Matsumura, Yoichi Sekii, Takuro Iguchi
  • Patent number: 10454335
    Abstract: A motor housing for an electric motor has a generally cylindrical housing shell (10), which, at one end (26), accommodates a first bearing and a housing cover module (12) such that the housing cover module (12) closes an opposing, open end of the housing shell (10), and serves as a second bearing. The cover module (12) is preferably of metal material and is integrally formed with a plurality of projecting tab and/or arm portions (14, 16, 18). Around the housing shell (10), several recesses or slots (20) are formed, flanked by deformable elements (30,32). By axially applying a tool (60), the deformable elements are deformed to secure the tabs (14, 16, 18) within the slots (20) and to thereby connect the shell (10) and the cover module (12) axially together. The resulting structure is highly resistant to vibrational decoupling, and can readily be obtained by high-speed automated production steps.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: October 22, 2019
    Assignee: ebm-papst St. Georgen GmbH & Co. KG
    Inventors: Ismail Altindis, Dieter Mueller, Bernhard Trier
  • Patent number: 10435150
    Abstract: A pneumatic actuated trim tab system adapted to be mounted on a rotor blade to pneumatically alter aerodynamic properties of the rotor blade. The system includes an inflatable diaphragm adapted to be mounted on one or each side of the rotor blade; a deformable plate attached to each of the inflatable diaphragm, such that inflation and deflation of the inflatable diaphragm causes movement of each of the plates; a valving system connected to each inflatable diaphragm to allow input of a fluid into each inflatable diaphragm and allow release of a fluid out of each inflatable diaphragm; and a controller for controlling fluid pressure into and out of each inflatable diaphragm using the valving system.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: October 8, 2019
    Inventor: Joseph Szefi
  • Patent number: 10424996
    Abstract: Provided is a motor rotor which, without changing an integral fastening structure relying on swage pins, increases resistance to the excessive excitation force of the motor rotor and which can easily prevent decreases in fastening strength; a motor that uses the motor rotor, and an electric compressor are also provided. This motor rotor is provided with a cylindrical rotor core comprising multiple laminated magnetic steel sheets, end plates and balance weights laminated on both ends of the rotor core, and multiple headed swage pins which are inserted from one side and which integrally fasten the rotor core, the end plates and the balance weights. The material of the balance weight arranged to the head of the swage pin is harder than that of the swage pin, and the material of the balance weight arranged to the swage part of the swage pin is softer than that of the swage pin.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: September 24, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Masayuki Ishikawa, Goshi Iketaka, Yuki Ichise, Akinori Yoshioka
  • Patent number: 10411534
    Abstract: The rotor includes: a rotor core having a plurality of insertion holes penetrating in an axial direction at intervals in a circumferential direction; and magnets respectively provided in the insertion holes. A space is formed between a hole inner side peripheral surface of each insertion hole and a magnet inner side peripheral surface of each magnet. An adhesion layer portion is formed between a hole outer side peripheral surface of each insertion hole and a magnet outer side peripheral surface of each magnet, and the hole outer side peripheral surface of each insertion hole and the magnet outer side peripheral surface of each magnet with which the adhesion layer portion contacts are formed in a flat-surface shape. A width in a radial direction of the space is longer than a width in the radial direction of the adhesion layer portion.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: September 10, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Aiko Nakano, Atsushi Sakaue
  • Patent number: 10391539
    Abstract: A blanking die apparatus includes multiple machining stations having respective cutting tools operated simultaneously to perform predetermined blanking operations on a belt-shaped workpiece fed progressively in a longitudinal direction and finally to perform a contour blanking operation on the workpiece, thereby forming core pieces used for manufacturing a laminated iron core, and an auxiliary cutting tool that forms a disposal hole by partly blanking a scrap forming area of the workpiece simultaneously with the operations of the cutting tools of the machining stations.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: August 27, 2019
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Takahiro Shimizu, Hironosuke Taniishi
  • Patent number: 10381906
    Abstract: A short-circuit ring for a rotor of an electrical asynchronous machine is circular and has along its circumference a multiplicity of recesses extending in the axial direction, into which rods of a rotor cage of the asynchronous machine can be placed. The short-circuit ring is assembled from a plurality of partial ring segments.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: August 13, 2019
    Assignee: ROBERT BOSCH GmbH
    Inventors: Thomas Berger, Arndt Kelleter, Harald Laue
  • Patent number: 10367384
    Abstract: A rotor for a small electric motor (e.g., electric engine). The rotor having a rotor axis, multiple permanent magnets that are arranged in a spoke-shaped way as well as several inference cores. Each of the permanent magnets has two axial ends, two longitudinal sides, a radial outer side as well as a radial inner side. The inference cores protrude radially over the permanent magnets in relation to the rotor axis. The rotor is enclosed at least partially by a casting mold having multiple struts that extend in an axial direction and that overlap radially with the permanent magnets. The inference cores do not overlap with the permanent magnets on their radial outer sides, wherein both the permanent magnets as well as the inference cores are held together primarily directly by the casting mold in a radial direction.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: July 30, 2019
    Assignee: LAKEVIEW INNOVATION LTD.
    Inventors: Stefan Imfeld, Heinz Wagner
  • Patent number: 10326341
    Abstract: In a method for producing a rotor of an asynchronous electric machine, a carrier shaft is produced with shaft slots and a squirrel cage rotor is applied to the carrier shaft. The carrier shaft and an electrically conductive bulk material of nickeled copper is placed into a container so that the bulk material fills up the shaft slots. The bulk material is compacted in the container by hot isostatic pressing and thereby bonded to the carrier shaft such that nickel as diffusion material causes permanently bonding of copper to the carrier shaft. The container is then detached from the carrier shaft.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: June 18, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Andreas Bethge, Kai-Uwe Volker
  • Patent number: 10312758
    Abstract: To provide a holding member, a rotor including the holding member, and a rotating electrical machine including the rotor, in which there is no risk of the holding member grinding against the stator, while maintaining a sufficient tensile force of the holding member for the magnet in the rotor of the rotating electrical machine. The length of the main section in the axial direction is longer than the length of the stator core in the axial direction; and the terminally processed section is arranged so as to be located outside of the end of the stator core in the axial direction; the terminally processed section is the start point and the end point of winding the fiber bundle composing the holding member, and is located outside of the stator core; and the terminally processed section is relatively thick.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: June 4, 2019
    Assignee: FANUC CORPORATION
    Inventors: Youhei Arimatsu, Shinobu Takano
  • Patent number: 10312763
    Abstract: A stator includes: a stator core having an annular portion and a plurality of teeth that is radially protruded outward from an outer periphery of the annular portion; a molded coil that has an air-core portion into which the teeth of the stator core are inserted and that is stored in a slot formed between the teeth of the stator core; and a yoke that covers a circumference of the molded coil stored in the slot of the stator core. The molded coil has an arc-shaped cross-section, and the molded coil includes a resin-molded portion and an exposed portion exposed at the molded portion.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: June 4, 2019
    Assignee: SANYO DENKI CO., LTD.
    Inventors: Toshihito Miyashita, Masashi Suzuki, Manabu Horiuchi, Masaki Musha
  • Patent number: 10305340
    Abstract: An armature for a permanent magnet brushed motor includes a shaft, a number of silicon steel laminations circumferentially around the shaft, a commutator adjacent to an end of the shaft, and an enameled wire winding wound around the silicon steel laminations and the commutator. A plastic sleeve capable of withstanding high temperature is disposed between the commutator and the silicon steel laminations and adjacent to the commutator. A plastic member wraps around where the enameled wire winding winds the commutator, and fixedly attaching to the plastic sleeve. As such, the plastic member establishes a first point of attachment at where the enameled wire winding winds the commutator and a second point of attachment to the plastic sleeve. The problem of the enameled wire winding being loosed or broken due to the armature's high-speed rotation is prevented, thereby enhancing the motor's robustness and operational life.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: May 28, 2019
    Inventor: Chi-Wen Chen
  • Patent number: 10284032
    Abstract: A rotor for a reluctance motor includes a laminate stack having layers. Each layer has a plurality of flux-conducting sections formed in each case by a magnetically conductive rotor lamination and extending transversely to a corresponding q axis. The flux-conducting sections are separated from one another by nonmagnetic flux barrier regions. An electrically conductive and non-ferromagnetic filler material is arranged in a plurality or all of the flux barrier regions of the layers to electrically connect the flux barrier regions of adjacent layers to one another so that cage bars of a rotor cage of the rotor which extend axially parallel or skewed with respect to the axis of rotation are formed by the filler material in the flux barrier regions.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: May 7, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Klaus Büttner, Marco Cerny, Ralf Fischer, Matthias Warmuth
  • Patent number: 10284061
    Abstract: Provided is a rotor (1) of a permanent magnet-type electric rotary machine, the rotor being able to restrain a decrease of a magnetic characteristic. A pair of endplates (6a, 6b) placed at both axial ends of a rotor core (3) are each provided with a pressing portion (10, 10) configured to abut with an outer peripheral side of an end of the rotor core (3) to apply a pressing force toward the other end plate.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: May 7, 2019
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Kenichi Mae, Toshiharu Mochida, Masao Shuto, Hirofumi Nishimura
  • Patent number: 10284060
    Abstract: A stator assembly method and stator assembly apparatus in which coils that have slot housed portions and coil ends formed from a conductor are mounted to an annular stator core that includes slots formed between adjacent teeth that extend from a back yoke toward an inner side in a radial direction.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: May 7, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Shingo Hashimoto, Shingo Sato, Shigeru Maeda, Masumi Tomura
  • Patent number: 10270314
    Abstract: An electric vehicle comprises a driving motor which generates heat during an operation of the driving motor; a driving power transmission mechanism which transmits driving power of the driving motor to a rear wheel (drive wheel); an oil pan (first reservoir section) which is placed below the driving motor and reserves oil (coolant) therein; an oil reservoir (second reservoir section) which is placed above the driving motor and reserves the oil (coolant) therein; a fluid passage which causes the oil pan and the oil reservoir to be in communication with each other; and a pump which supplies the oil (coolant) from the oil pan to the oil reservoir through the fluid passage, and the oil reservoir includes a first drop hole through which the oil (coolant) is dropped toward the driving motor by a gravitational force.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: April 23, 2019
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventor: Yoshimoto Matsuda
  • Patent number: 10263501
    Abstract: A vibration generator including a coil, a plunger including a first shaft and a second shaft, and a frame. The first shaft is received in the coil such as to be movable in a first direction. The second shaft extends in a second direction orthogonal to the first direction, is disposed on the other side in the first direction relative to the coil with a gap therebetween. The first and second shafts are partly made of a magnetic material so as to be magnetically attractable to the coil and thereby movable to one side in the first direction. The frame is fixed to the first and second shafts at positions on the one and other sides, respectively, in the first direction relative to the coil, and elastically deformable at least partly as a result of movement of the first and second shafts.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: April 16, 2019
    Assignee: HOSIDEN CORPORATION
    Inventors: Yushi Yano, Hideyuki Kataoka, Masayuki Ikehara
  • Patent number: 10250088
    Abstract: The pole wheel according to the invention is intended for the rotor of a Lundell rotating electric machine. The pole wheel is obtained entirely by forging and comprises a central core provided with a central bore in a central axis of the pole wheel intended to receive a shaft of the rotor, a plurality of pole teeth (10g, 11g) distributed in a regular manner at the circumference of the pole wheel and extending substantially parallel to the central axis of the pole wheel, and an annular part forming a plate and extending between the central core and parts forming bases of the pole teeth. According to the invention, the pole wheel comprises a plurality of reservoirs (105) provided in the parts forming bases of the pole teeth.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: April 2, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Michel Bocquel, Henri Delianne, Pierre-Yves Bilteryst, Herve Ribot
  • Patent number: 10193424
    Abstract: A process and a system for welding rotor coils are presented. A plurality of rotor coils are arranged on a table of a machine. A welding tool welds the rotor coils on one end using a Friction Stir Welding process. Transition pieces are each arranged between the rotor coils to create a continuous welding path. A run-off tab is placed at an end of the welding path. The welding tool is changed to a milling tool after completion of the welding. The milling tool traces back along the welding path to separate the rotor coils. The milling tool may be changed to the welding tool to repeat the process for another end of the rotor coils. The process is completely automatic and controlled by a control unit.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: January 29, 2019
    Assignee: SIEMENS ENERGY, INC.
    Inventors: Margarita Estrada, Randall S. Garrett, Ethan Miller
  • Patent number: 10181775
    Abstract: A rotor of an asynchronous machine with a cage rotor includes a laminated core formed from a plurality of partial laminated cores. The laminated core has substantially axially extending conductors arranged in slots in the laminated core. The conductors include at least two materials of different electrical conductivities, such that a material with a higher electrical conductivity surrounds a material with a lower electrical conductivity by at least 65% in a circumferential direction.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: January 15, 2019
    Assignee: AUDI AG
    Inventors: Matthias Scherer, Josef Niedermeyer, Uwe Scharf
  • Patent number: 10164508
    Abstract: A lamination pack for a motor and method of forming the lamination pack is provided. The method includes inserting a plurality of conductor bars into a plurality of rotor slots defined by a lamination stack such that opposing bar ends of the conductor bars extend from opposing end faces of the lamination stack, skewing the lamination stack and the conductor bars to a skew angle relative to a rotation axis of the lamination stack, and subsequently bending the bar ends of the conductor bars in opposing radial directions to a locking angle greater than the skew angle, to lock each of the conductor bars in its respective rotor slot. The bent bar ends exert a compressive axial locking force on the lamination stack to prevent axial and radial movement of the laminations in the lamination stack and to prevent axial movement of the conductor bars relative to the lamination stack.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: December 25, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: John S. Agapiou, Michael D. Hanna
  • Patent number: 10145450
    Abstract: Electric motors are disclosed. The motors are preferably for use in an automated vehicle, although any one or more of a variety of motor uses are suitable. The motors include lift, turntable, and locomotion motors.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: December 4, 2018
    Assignee: Nidec Motor Corporation
    Inventors: William D. Moore, Philip S. Johnson, Joshua M. Biro, Paul G. Michaels, Payman Rassoolkhani