Interfitting Or Claw Tooth Rotors Patents (Class 310/263)
  • Patent number: 11190079
    Abstract: The present invention comprises a rotor core and a cover disposed on the rotor core, wherein the cover includes a body part and a plurality of wing parts formed on the body part, the wing part is disposed between an outer boundary, which is a circular curve, and an inner boundary, which is a circular curve, the wing part includes an inner part and an outer part, the inner part forms a first inlet angle at a first point and forms a first outlet angle at a second point, the outer part forms a second inlet angle at a second point and forms a second outlet angle at a third point, the first point is positioned at the inner boundary, the second point is positioned at an intermediate boundary, which is a circular curve, disposed between the outer boundary and the inner boundary, and the third point can be positioned at the outer boundary.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: November 30, 2021
    Assignee: LG INNOTEKCO., LTD.
    Inventors: Young Jae You, Hyung Bin Im
  • Patent number: 11056950
    Abstract: A motor includes a rotary shaft having at least one spray hole for spraying a cooling fluid, a rotor installed on the rotary shaft, and a stator surrounding an outer circumference of the rotor, wherein the rotor includes a plurality of rotor blocks arranged on an outer circumference of the rotary shaft. Each of the rotor blocks may include a magnet installed at a rotor core and a cooling guide may be disposed between a pair of the plurality of rotor blocks and form a spray flow path for guiding a cooling fluid that has passed through the spray hole to be sprayed in a direction toward an inner circumference of the stator.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: July 6, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Taeyong Jung, Youngil Park, Haerim Yang, Hyeonho Ha
  • Patent number: 10958122
    Abstract: A rotating electrical machine that includes a rotor core having a permanent magnet placed therein; a stator core placed so as to face the rotor core in a radial direction and including a plurality of teeth and a plurality of slots each located between adjacent ones of the teeth; and a plurality of coils placed in the slots of the stator core.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: March 23, 2021
    Assignee: AISIN AW CO., LTD.
    Inventors: Junichi Yokota, Takahiro Odagi
  • Patent number: 10932331
    Abstract: An electromagnetic array includes a substrate defined by a plurality of regions. Each region includes a plurality of conductors arranged in a varying configuration such that, upon application of an electric current, each conductor of the plurality of conductors generates a magnetic field in a polarity that is other than a polarity of a corresponding magnetic field of at least one adjacent conductor. Each region includes a first surface and a second surface opposite the first surface, the first surface having a strong magnetic field relative to a weak magnetic field associated with the second surface in response to the electric current. A first region is adjacent to another region, and configured such that a polarity of the strong magnetic field associated with the first region is in a polarity other than a polarity of the strong magnetic field associated with the at least one other region.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: February 23, 2021
    Assignee: Illinois Tool Works Inc.
    Inventor: Michael Hoeger
  • Patent number: 10916986
    Abstract: A stator in which the height of a coil end of a stator winding can be lowered is provided, and an electric rotating machine including such a stator is provided. In a stator of an electric rotating machine including a stator winding including neutral lines and output lines, the neutral lines are configured to include crawling portion extending circumferentially in the upper portion of a coil at the coil end, and the crawling portion includes an axial stepped portion. The output lines are configured to pass under the axial stepped portion in at least one location of three phases.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: February 9, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Tomohiro Fukuda, Kenichi Nakayama, Shinji Yamazaki, Hisaya Shimizu
  • Patent number: 10910932
    Abstract: In a rotating electric machine, a rotor includes a field core, a field coil and permanent magnets. The field core has a boss portion and claw-shaped magnetic pole portions. Each of the permanent magnets is arranged between one circumferentially-adjacent pair of the claw-shaped magnetic pole portions. A d-axis magnetic circuit and a magnet magnetic circuit share a magnetic path in at least parts thereof. Along the d-axis magnetic circuit, magnetic flux generated by the magnetomotive force of the field coil flows through the boss portion, one pair of the claw-shaped magnetic pole portions and a stator core. Along the magnet magnetic circuit, magnetic flux generated by the magnetic force of a corresponding one of the permanent magnets flows. The relationship of Ast>Af is satisfied, where Ast is a magnetic path cross-sectional area of a stator and Af is a magnetic path cross-sectional area of the rotor.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: February 2, 2021
    Assignee: DENSO CORPORATION
    Inventor: Yuuki Takahashi
  • Patent number: 10879750
    Abstract: A claw pole member for an electric machine including a plurality of claw pole segments. Each of the plurality of claw pole segments includes a radial projecting member, an axial outer surface extending to a cantilevered end portion, and an axial inner surface extending axially outwardly of the radial projecting member to a cantilevered end section. A first side surface extends between the axial outer surface and the axial inner surface from the radial projecting member to the cantilevered end portion and the cantilevered end section, and a second side surface extends between the axial outer surface and the axial inner surface from the radial projecting member to the cantilevered end portion and the cantilevered end section. The first and second side surfaces define a taper of the claw pole segment. Each of the first and second side surfaces includes a recessed portion that extends into the claw pole segment.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: December 29, 2020
    Assignee: BORG WARNER INC.
    Inventor: Michael D. Bradfield
  • Patent number: 10840787
    Abstract: A rotating electric machine includes a stator and a rotor. The stator includes a stator core and an armature coil wound on the stator core. The rotor is arranged radially inside the stator to radially face the stator. The rotor includes: a field core having a plurality of magnetic pole portions for respectively forming a plurality of magnetic poles the polarities of which are alternately different in a circumferential direction; a field coil wound on the field core; and a tubular short-circuiting member that is arranged radially outside the magnetic pole portions to cover radially outer surfaces of the magnetic pole portions and magnetically connects each circumferentially-adjacent pair of the magnetic pole portions. Moreover, two axial end portions of the short-circuiting member protrude axially outward respectively from two axial ends of the stator core.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: November 17, 2020
    Assignee: DENSO CORPORATION
    Inventor: Yuuki Takahashi
  • Patent number: 10840752
    Abstract: First side surfaces 22bb of first magnetic pole portions 22b and second side surfaces 23bb of second magnetic pole portions 23b that face each other in a circumferential direction are configured into parallel flat surfaces, first circumferentially tapered portions 25b are formed on circumferential shoulder portions of the first magnetic pole portions 22b, second circumferentially tapered portions 26b are formed on circumferential shoulder portions of the second magnetic pole portions 23b, and portions of the first and second circumferentially tapered portions 25b and 26b enter a region 24 in which the first side surfaces 22bb and the second side surfaces 23bb that face each other in the circumferential direction overlap when viewed from a direction that is perpendicular to the first side surfaces 22bb and the second side surfaces 23bb.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: November 17, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshiro Imazawa, Yuki Uesato
  • Patent number: 10790734
    Abstract: A rotor of a rotating electric machine includes a field core having a cylindrical boss portion, and a plurality of claw-shaped magnetic pole portions that are arranged on the outer side of the boss portion and form poles of alternately different polarities in the circumferential direction, a field winding that is wound around the outer periphery of the boss portion and generates a magnetomotive force by energization, a permanent magnet disposed between the circumferentially adjacent claw-shaped magnetic pole portions so as to have its easy axis of magnetization oriented in the circumferential direction and have its polarity coincide with the polarity of the claw-shaped magnetic pole portions which alternately appears by excitation, and a magnetic flux short circuit member having a short circuit portion that magnetically connects the claw-shaped magnetic pole portions circumferentially arranged to have different polarities.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: September 29, 2020
    Assignee: DENSO CORPORATION
    Inventors: Yuki Takahashi, Tomokazu Hisada
  • Patent number: 10630122
    Abstract: A rotor of a motor includes first and second rotor cores, a field magnet, and a commutator magnet. The first and second rotor cores each include a core base and a plurality of claw poles. The claw poles of the first rotor core and the claw poles of the second rotor core are alternately arranged in a circumferential direction. The field magnet is located between the core bases. The field magnet is magnetized in an axial direction so that the claw poles of the first rotor core and the claw poles of the second rotor core function as different magnetic poles in the circumferential direction. The commutator magnet is located on an outer circumference of the field magnet around the claw poles. The commutator magnet is magnetized so that surfaces having the same polarity face each other between the claw poles and the commutator magnet.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: April 21, 2020
    Assignee: Denso Corporation
    Inventors: Yoji Yamada, Chie Morita
  • Patent number: 10536044
    Abstract: The present invention provides a rotor assembly comprising: a rotor including a core body, and a plurality of protrusion parts coupled to the core body so as to be detachable therefrom; and an insulator including a body encompassing the protrusion parts, and blades formed to protrude from the upper and lower surfaces of the body, thereby providing an advantageous effect of reducing the number of parts to be manufactured such that manufacturing costs and manufacturing processes can be reduced.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: January 14, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Joung Ho Lee
  • Patent number: 10486784
    Abstract: In a rotating electrical machine apparatus, a rotor portion provided in a cylindrical portion and a stator portion provided in a recessed portion in which the rotor portion is housed are aligned along the rotation axis of a rim such that a force is generated in a direction opposite to the direction of a load that acts along the rotation axis of the rim of loads that act on the rim following rotation of a blade.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: November 26, 2019
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Takayoshi Suzuki, Ryoma Matsuo, Satoshi Ishikawa, Noriyoshi Hiraoka
  • Patent number: 10479489
    Abstract: A rotary device comprises a frame with a guide for flowing medium, a rotor with a number of blades, whereby a relation is obtained between the flowing medium and the rotation of the rotor, and energy converting means, the one part of which is connected to the frame and the other part to the rotor. The device has the feature that the end zones of the blades are connected to a ring, the ring has a radial section with the shape of an isosceles triangle or trapezium, the medium guide has an encircling recess, the form of which corresponds to the form of the ring and the ring fits with clearance into the recess, permanent magnets are added to the truncated conical surfaces, electromagnets debouch on both the corresponding surfaces of the recess, this such that the ring and the frame together form an annular induction motor or an electric generator.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: November 19, 2019
    Assignee: ECO-LOGICAL ENTERPRISES B.V.
    Inventor: Augustinus Wilhelmus Maria Bertels
  • Patent number: 10298084
    Abstract: A rotating electric machine including a stator including a stator core and a stator coil wound around the stator core, and a rotor including a rotor core arranged coaxially and radially in a face-to-face relationship with the stator core and a field coil wound around the rotor core. Both axial end portions of the rotor core project more axially outward than respective axial end faces of the stator core. The rotor core has a cutout surface between one of the axial end faces of the rotor core and an outer peripheral surface of the rotor core. A corner at which the cutout surface and the outer peripheral surface intersect is not more axially outward than either of the axial end faces of the stator core.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: May 21, 2019
    Assignee: DENSO CORPORATION
    Inventor: Yuki Takahashi
  • Patent number: 10263482
    Abstract: Cracking and flying around of permanent magnets in a permanent magnet embedded-type rotating electric machine is prevented. Thermally hardening FRP is used as a reinforcement sheet, and the reinforcement sheet is wrapped around the periphery of a permanent magnet and caused to adhere to the surface of the permanent magnet by being thermally hardened. Subsequently, the permanent magnet to which the reinforcement sheet is adhering is embedded in magnet embedding holes of the rotor. The surface of the reinforcement sheet after thermal hardening is in a state of not being attached to the inner wall surface of the magnet embedding holes. Consequently, no stress caused by the difference between the linear expansion coefficients of the rotor and permanent magnets acts on the permanent magnets when the temperature of the rotor rises, and cracking of the permanent magnets can thus be prevented.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: April 16, 2019
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Toshiharu Mochida, Takashi Sakiyama, Masao Shuto, Toshiya Sasaki, Hirofumi Nishimura, Takeshi Iwamoto, Yuji Nakazaki, Takasumi Chikazawa, Keizou Kato
  • Patent number: 10193404
    Abstract: Rotor an alternator or alternator-starter type comprises two pole wheels including a series of axial claws having a generally trapezoidal shape that extend axially from the edge of the outer radial end of one pole wheel towards the other pole wheel. The rotor comprises an interpolar magnetic assembly in the interpolar space between a first claw of a first pole wheel and a second claw of a second pole wheel. The magnetic assembly comprises two first faces defined by first and second free ends. A side face is also provided, such that the adjacent side face faces same, the side face comprising third and fourth opposing ends between which the magnet is in contact. The side faces of the first and second claws define a reduction in cross-section from one of the free ends of the magnetic assembly extending towards a claw head end along a side facet.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: January 29, 2019
    Assignee: VALEO EQUIPEMENTS ELECTRIQUES MOTEUR
    Inventors: Henri Delianne, Pierre-Yves Bilteryst
  • Patent number: 10056801
    Abstract: The present invention concerns a protective cover (400) designed to cover power, filtering and control modules of an electronic assembly for a rotating electric machine for a motor vehicle.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: August 21, 2018
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Manuel Falguier, Fabien Guerin, Alexis Hosni, Michel Fakes, Yannick Le-Meitour, Philippe Baudesson
  • Patent number: 9960657
    Abstract: A rotating electrical machine, in particular to an alternator (A) or to an alternator-starter, for a motor vehicle, comprising: a rotor (2) supporting a front fan (23) at the front and a rear fan (24) at the rear, the rotor being rotatable about an axis of rotation, a stator (4) comprising a stator body and at least one winding placed on the stator body, the winding forming front and rear chignons on either side of the stator body, and a casing (1) in which the stator and the rotor are placed.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: May 1, 2018
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Michel Fakes, Jeremie Lutun, Dominique Caubert
  • Patent number: 9876416
    Abstract: Method for making an electrical machine (10), especially a three-phase generator for vehicles, that comprises a stator (16) and a rotor (20). The rotor (20) comprises a first and a second claw pole (22, 23) from which claw pole fingers (24) respectively extend in the axial direction from claw pole roots (60). A centering point (74) for a tool is located on a rear radius (72) of the claw pole roots (60).
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: January 23, 2018
    Assignee: SEG Automotive Germany GmbH
    Inventors: Rolf Eckert, Horst Fees
  • Patent number: 9831733
    Abstract: A coil bobbin for a brushless alternator includes an integrally formed one piece bobbin body that has a first end, a second end and a central passage that extends from the first end to the second end. A coil support portion of the body is positioned at the first end and has a first cylinder of a first diameter bordered by flanges which extend past the first cylinder. A base portion of the body is positioned at the second end. A bobbin extension portion is positioned between the coil support portion and the base portion. The bobbin extension portion includes a second cylinder of a second diameter which is smaller than the first diameter.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: November 28, 2017
    Assignee: All-Tek Maintenance Ltd.
    Inventors: Dale E. Benson, Ronald J. Heidel
  • Patent number: 9824806
    Abstract: A coil includes a wound body and a resin covering. The wound body is configured by winding a conductor. The wound body is pressure-molded. The resin covering covers a surface of the wound body.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: November 21, 2017
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Tsuyoshi Nonaka, Masayuki Hirayama, Haruki Yahara
  • Patent number: 9800117
    Abstract: A self-cooled motor includes a rotor holder including a cylindrical portion and a bottom plate portion, and configured to rotate with a shaft; a housing supporting a bearing and a stator; and at least one blade rotating together with the shaft to generate an air current traveling radially outward, at least a portion of each blade being located axially below the bottom plate portion of the rotor holder. The housing includes a base portion axially above the rotor holder and an outlet edge portion in the housing and between adjacent ones of the attachment portions, and configured to define a main air outlet axially below, the main air outlet connecting a space radially inside the housing and a space radially outside the housing with each other. The bottom plate portion of the rotor holder includes a rotor vent hole passing therethrough in an axial direction.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: October 24, 2017
    Assignee: NIDEC CORPORATION
    Inventor: Yusuke Iwai
  • Patent number: 9758245
    Abstract: A rotor drive for a tail rotor of a helicopter is provided. The system includes a stator and a rotor mounted to the stator with a rotatable central carrier. Rotor blades are radially attached to the rotatable central carrier and each of the rotor blades is pivotable about their respective radial central axis for variation of blade pitch. At least one permanent magnet is provided on each rotor blade. A plurality of electromagnets is provided on the stator close enough to allow inductive interaction between the plurality of electromagnets and the at least one permanent magnet on each rotor blade. The permanent magnets are offset from the radial central axis in a direction perpendicular to the rotation plane for individual pitch control of the rotor blades by individual control of electric supply to the electromagnets.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: September 12, 2017
    Assignee: AIRBUS HELICOPTERS DEUTSCHLAND GMBH
    Inventor: Tobias Ries
  • Patent number: 9755464
    Abstract: A rotor includes a rotating shaft and a pair of first and second pole cores fixed on the rotating shaft. Each of the first and second pole cores includes a plurality of magnetic pole claws each having a root portion and a distal end. Each of the magnetic pole claws are configured to have a constant circumferential width at the root portion and taper from the root portion to the distal end. The magnetic pole claws of the first pole core are arranged alternately with those of the second pole core in a circumferential direction of the rotating shaft. Further, at least part of the magnetic pole claws of the first and second pole cores each have at least one chamfered portion formed at a circumferential end of the root portion of the magnetic pole claw so as to extend parallel to an axial direction of the rotating shaft.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: September 5, 2017
    Assignee: DENSO CORPORATION
    Inventors: Yosuke Sekiyama, Nobuhiro Asano
  • Patent number: 9705384
    Abstract: A rotor is provided for a rotating electric machine. The rotor includes a magnetic pole core and a cooling fan. The cooling fan includes a base plate laser-welded to an axial end face of the magnetic pole core and a plurality of fan blades extending from the base plate. Further, in the rotor, a weld formed between the base plate of the cooling fan and the magnetic pole core has a pair of open ends.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: July 11, 2017
    Assignee: DENSO CORPORATION
    Inventors: Hiroo Kaizu, Seiji Kondoh, Shigenobu Nakamura
  • Patent number: 9676460
    Abstract: Propulsion unit (11) for propulsion and maneuvering of a maritime vessel, which includes a nozzle (12) wherein a propeller section (13, 13a) is arranged, which propeller section (13, 13a) is electrically or hydraulically driven, which propulsion unit (11) includes a fastening device (16) arranged for arrangement to hull of the vessel or to a steering device arranged for steering and/or moving the propulsion unit (11). The fastening device (16) is formed by two stems (17a-b) extending in parallel or laterally reversed about an vertical central axis from an upper surface of the nozzle (12) of the propulsion unit, which stems (17a-b) end in a fixing flange (18) for thereby providing an opening (19) which provides the propulsion unit (11) with improved hydrodynamic performance.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: June 13, 2017
    Assignee: Rolls-Royce Marine AS
    Inventor: Steinar Aasebö
  • Patent number: 9647510
    Abstract: A cooling jacket (14) for cooling an electric motor, in particular a stator (23), wherein a first spiral line (16) for transporting a coolant is formed at least partially on the cooling jacket (14). The aim of the invention is to provide a cooling system that is optimized in terms of mounting space and ensures axially equalized cooling. This aim is achieved in that a second spiral line (17) for transporting coolant is formed at least partially, and in that based on a common spiral axis R, both spiral lines (16, 17) form an axially integrated double spiral, wherein the first spiral line (16) is an inflow line and the second spiral line (17) is a return flow line. The invention further relates to a deflection unit (12) for the return into the second line (17), which substantially prevents the static pressure from dropping.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: May 9, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Raphael Fischer, Tobias Vogler
  • Patent number: 9502944
    Abstract: An electric machine component includes a rotor assembly having a body provided with a number of pole members and a central hub. The body includes at least one mounting member projecting radially outwardly of the central hub. A fan member is mounted to the rotor. The fan member includes a hub portion and a number of fan blades projecting radially outwardly from the hub portion. The fan member includes at least one mounting element extending radially outwardly of the hub portion. The at least one mounting element is configured and disposed to engage with the at least one mounting member to radially and axially constrain the fan member to the rotor.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: November 22, 2016
    Assignee: REMY TECHNOLOGIES, L.L.C.
    Inventors: Kirk Neet, David Maley, Scott Bitzer, Chad Zook
  • Patent number: 9444312
    Abstract: A metal plate is insert-molded into a case so as to be exposed inside a B terminal mounting aperture so as to overlap with a busbar, a B terminal bolt is press-fitted from an opposite side from the busbar into a press-fitting aperture that is formed on the portion of the metal plate that is exposed inside the B terminal mounting aperture, a spacer and a nut are mounted onto a shaft portion of the B terminal bolt, and the nut is electrically connected to the busbar by the busbar being pressed and held between the spacer and the nut by a fastening force from the nut.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: September 13, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masahiko Fujita, Yoshinobu Utsumi
  • Patent number: 9379582
    Abstract: A motor includes a shaft, a rotor, and a stator. The rotor includes first and second rotor cores, and a field magnet. Second claw magnetic pole portions of second rotor core are arranged between first claw magnetic pole portions of the first rotor core. The field magnet causes the first claw magnetic pole portions to function as first magnetic poles, and the second claw magnetic pole portions to function as second magnetic poles. Radially inner surfaces of the teeth of a stator core face radially outer surfaces of the first and second claw magnetic poles. Either radially outer surfaces of the first and second claw magnetic pole portions or radially inner surfaces of the teeth each have a cross-sectional shape in a direction orthogonal to the axial direction that is not concentric to a circle of which center is an axis of the rotation shaft.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: June 28, 2016
    Assignee: ASMO CO., LTD.
    Inventors: Koji Mikami, Yoji Yamada, Shigemasa Kato
  • Patent number: 9312740
    Abstract: The invention relates to devices including rotary units and rotary mechanisms that are suitable for use in numerous applications. Rotary units typically include rotational components that are configured to rotate. In some embodiments, for example, multiple rotary units are assembled in rotary mechanisms such that neighboring pairs of rotational components counter-rotate or contra-rotate relative to one another during operation of the rotary mechanisms. Rotational components generally include one or more implements that are structured to perform or effect one or more types of work as the rotational components rotate relative to one another in a given rotary mechanism. In certain embodiments, implements are configured to rotate and/or to effect the movement of other components as rotational components rotate.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 12, 2016
    Inventor: Christopher C. Sappenfield
  • Patent number: 9306424
    Abstract: A rotor for a rotary electric machine includes a pair of Lundell-type cores, a plurality of magnets, and a magnet retainer. The pair of Lundell-type cores includes a plurality of claw poles with flange portions projecting to a circumferential direction of the rotor from an end portion on an outer diameter side of each of the claw poles. The plurality of magnets are arranged between the pair of Lundell-type cores, and are magnetized in a direction of reducing flux leakage. The magnet retainer retains each of the magnets, and has side surfaces in the circumferential direction. At least one of the side surfaces is provided with at least one projection for restraining movement of the magnet retainer in an axial direction along a rotary shaft.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: April 5, 2016
    Assignee: DENSO CORPORATION
    Inventors: Hiroyuki Tsuchiya, Koji Kondo
  • Patent number: 9276444
    Abstract: A rotor includes a first rotor core, a second rotor core, a field magnet, and an adhesive. The first rotor core includes a first core base, having a first magnet fixing surface, and a plurality of first claw-poles. The second rotor core includes a second core base having a second magnet fixing surface, and a plurality of second claw-poles. The field magnet includes a first axial end face and a second axial end face. At least one of the first magnet fixing surface and the first axial end face includes a first adhesive recess that receives an adhesive. At least one of the second magnet fixing surface and the second axial end face includes a second adhesive recess that receives the adhesive.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: March 1, 2016
    Assignee: Asmo Co., Ltd.
    Inventors: Chie Morita, Yoji Yamada
  • Patent number: 9166449
    Abstract: A rotor includes a field member arranged between a first core base of a first rotor core and a second core base of a second rotor core in the axial direction. When magnetized in the axial direction, the field member causes primary claw-shaped magnetic poles to function as primary magnetic poles and secondary claw-shaped magnetic poles to function as secondary magnetic poles. The field member is formed by placing a plurality of members one over another in the axial direction.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: October 20, 2015
    Assignee: Asmo Co., Ltd.
    Inventor: Chie Morita
  • Patent number: 9140265
    Abstract: A blower includes an air pump and a motor. The pump includes an impeller and a casing housing the impeller. The casing includes a casing inlet through which air is drawn in and a casing outlet through which the air is expelled by the impeller. The motor is arranged at the casing outlet and includes a stator and a rotor. The stator includes a stator core and a plurality of coils. The stator core includes a substantially ring-shaped yoke and a plurality of teeth extending inwards from the yoke. Each coil is wound around the yoke and is partially sandwiched between two adjacent teeth. The impeller is driven by the rotor.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: September 22, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Yue Ll, Mao Xiong Jiang, Jian Zhao, Zhi Jun Wang, Ke Yan, Yong Wang
  • Patent number: 9099904
    Abstract: An electric machine includes a stator and a rotor configured to rotate about an axis of rotation in a direction of angular rotation. The rotor includes a first claw-pole segment and an opposing second claw-pole segment. The first claw-pole segment includes a plurality of fingers extending from an end ring. Each finger includes a distal end and a proximal end with the proximal end fixed to the end ring. Each finger also includes an interior side and an exterior side with the exterior side facing the stator. A leading side and a trailing side are defined on each finger by the direction of angular rotation. A chamfer is formed on the exterior trailing side of each finger at the proximal end of the finger.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: August 4, 2015
    Assignee: Remy Technologies, LLC
    Inventor: Michael D. Bradfield
  • Patent number: 9099912
    Abstract: An electromagnetic coupling comprises a stator, a first rotor in which a first polar tooth and a second polar tooth are provided along a circumferential direction in an alternating manner, and a second rotor. The first rotor comprises a first polar tooth ring in which a plurality of the first polar teeth are provided along a circumferential direction with a gap therebetween, and a second polar tooth ring in which a plurality of the second polar teeth are provided along a circumferential direction with a gap therebetween, and which is placed opposing the first polar tooth ring such that the second polar teeth are placed in respective gaps between adjacent ones of the first polar teeth.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: August 4, 2015
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Eiji Tsuchiya, Takao Watanabe, Wataru Hijikata
  • Patent number: 9093887
    Abstract: A bicycle generator hub stator has a hub shaft, an annular member and three yokes. The annular member includes a first axial end, a second axial end and a through hole extending between the first and second axial ends. The hub shaft extends through the through hole. The first and second yokes are non-rotatably arranged relative to the annular member. The third yoke is non-rotatably connected to both the annular member and the hub shaft. The first yoke includes a first extended section that extends in an axial direction from the first axial end to the second axial end of the annular member. The second yoke includes a second extended section that extends in the axial direction from the second axial end to the first axial end of the annular member. The third yoke is disposed in the through hole and magnetically couples the first and second yokes together.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: July 28, 2015
    Assignee: Shimano Inc.
    Inventor: Hiroshi Hasegawa
  • Patent number: 9030073
    Abstract: The claw rotor (2) comprises: an axial symmetry axis (X-X); two magnet wheels having a core and teeth (9); insulation (11?) for a field coil (10) mounted onto the core; and permanent magnets mounted between two adjacent teeth (9) belonging to one and the other of the magnet wheels, wherein the insulation (11?) comprises a hub and a flange on each end of the hub (110), each flange having a plurality of projecting petals for engaging with the angled inner periphery (90) of a tooth (9). At least some petals of a flange (120) corresponding to the permanent magnets (38) are split into a plurality of portions, namely, a main petal (121a) for engaging with the inner periphery (90) of a tooth of the magnet wheel (8) in question and at least one side secondary petal (121b) that is lower, when seen in the radial direction, than the main petal. The rotating electrical machine comprises such a rotor. The invention is of use in a claw rotor for motor vehicle alternator or alterno-starter.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: May 12, 2015
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Virginie Leroy, Vincent Foveau
  • Patent number: 9018816
    Abstract: A rotor includes first and second rotor cores, a field magnet, interpole magnets and holding members. The first and second rotor cores each have claw-like magnetic poles arranged in the circumferential direction in an outer periphery of a core base at even intervals and formed to protrude radially outward. The field magnet is placed between the core bases in the axial direction of the rotor and magnetized in the axial direction to cause the magnetic poles of the first and second rotor cores to function as first and second magnetic poles, respectively. The interpole magnets are each arranged between a circumferentially adjacent pair of the magnetic poles and magnetized in the circumferential direction so as to have the same polarity as the magnetic poles, which are opposed thereto in the circumferential direction. The holding members hold the interpole magnets to restrict radially outward movement of the interpole magnets.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: April 28, 2015
    Assignee: ASMO Co., Ltd.
    Inventors: Yoji Yamada, Chie Morita, Yuu Mizoguchi
  • Patent number: 9013079
    Abstract: The present invention relates to a permanent magnet generator for outputting a stabilized electromotive force. More specifically, the permanent magnet generator for stabilizing an electromotive force outputs an electromotive force stably according to the rotation speed of a motor and stabilizes the wave form of the electromotive force to be close to sine waves.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: April 21, 2015
    Inventor: Tae whan Do
  • Patent number: 9006954
    Abstract: A rotor includes: a plurality of first magnetic pole members that are disposed such that first end portions and second end portions are respectively coupled magnetically and mechanically to a first magnetic end plate and to a second magnetic end plate and so as to be separated from a magnetic intermediate plate magnetically; a plurality of second magnetic pole members that are disposed such that intermediate portions are coupled magnetically and mechanically to the magnetic intermediate plate and so as to be separated from each of the magnetic end plates magnetically; a plurality of permanent magnets that are disposed between the first and second magnetic pole members in a circumferential direction; and a nonmagnetic holding body for separating the first magnetic pole members magnetically from the magnetic intermediate plate, and for separating the second magnetic pole members magnetically from the magnetic end plates.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: April 14, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masao Morita, Masaya Inoue, Yoichi Kuroda, Moriyuki Hazeyama, Kanji Shinkawa
  • Patent number: 8987967
    Abstract: An AC claw-pole electric motor includes a casing, a stator connected with the casing, a rotor and two exciting parts. The rotor includes a rotor shaft (9), a center magnetic yoke (11), a first side magnetic yoke (8), a second side magnetic yoke (13), and claw poles (2, 3, 4, 5) provided on the center magnetic yoke (11), the first side magnetic yoke (8) and the second side magnetic yoke (13). The two exciting parts are respectively provided in spaces formed by the center magnetic yoke (11), the first side magnetic yoke (8), the second side magnetic yoke (13) and the claw poles (2, 3, 4, 5). The axial exciting magnetic fluxes of the two exciting parts are opposite in direction. Thus, the main magnetic flux and the magnetic energy product of the electric motor are increased, and the output and the operation efficiency of the electric motor at a low speed are improved.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: March 24, 2015
    Assignee: Jing-Jin Electric Technologies (Beijing) Co., Ltd.
    Inventors: Wei Cai, Liheng Wang
  • Patent number: 8981612
    Abstract: A rotor is provided with a first rotation member having a plurality of first claw poles in a circumferential direction and a second rotation member having a plurality of second claw poles in a circumferential direction. By of fitting each second claw pole in a cutout portion between first claw poles and by fitting each first claw pole in a cutout portion between second claw poles, the first rotation member and the second rotation member are assembled to each other. At least either one of the first rotation member and the second rotation member is formed of a magnet. Based on a magnetic field generated by the magnet, the first claw poles and the second claw poles have alternating north poles and south poles in the circumferential direction.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: March 17, 2015
    Assignee: ASMO Co., Ltd.
    Inventors: Seiya Yokoyama, Yoji Yamada
  • Patent number: 8933610
    Abstract: A rotor includes at least one of a group of one or more auxiliary magnets that are located between first and second claw poles in a circumferential direction and magnetized to be magnetic poles of the same polarity as the first and second claw poles and another group of one or more auxiliary magnets that are located on a rear side of the first and second claw poles and magnetized to have radially outer portions of the same polarity as the first and second magnetic poles. The auxiliary magnets are arranged to protrude beyond at least one of axial end surfaces of the first and second core bases.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: January 13, 2015
    Assignee: ASMO Co., Ltd.
    Inventors: Yoji Yamada, Chie Morita, Seiya Yokoyama
  • Patent number: 8925402
    Abstract: An output shaft (14) of a starting device (1) is provided to equip a motor vehicle. This output shaft (14) comprises a mounting support (16), a driving element (17) on the mounting support (16) intended to transmit a rotation movement to a thermal engine, and a track (15) on the mounting support (16) intended to transmit a rotation movement to the mounting support (16), this track (15) being driven by a freewheel of a starter-head assembly of the starting device. The track (15) is attached and secured to the mounting support (16).
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: January 6, 2015
    Assignee: Valeo Equipements Electriques Moteur
    Inventor: Jean-Sebastien Metral
  • Patent number: 8890386
    Abstract: A rotor includes first and second rotor cores and a field magnet placed between the first and second rotor cores. Each of the rotor cores has a main body portion and a plurality of extensions, which extend radially outward from the main body portion at equal intervals in the circumferential direction. The field magnet causes the individual extensions to function as magnetic poles. A magnetic pole constituting section including at least part of each of the extensions and the first main body portion of each rotor core are made of different materials, made of the same material but formed as separate elements, or includes regions having different properties.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: November 18, 2014
    Assignee: ASMO Co., Ltd.
    Inventors: Chie Morita, Yoji Yamada, Seiya Yokoyama
  • Patent number: 8884481
    Abstract: A stator is provided for a bicycle generator hub. The stator comprises a coil bobbin and a plurality of first and second yokes. The first and second yokes are radially arranged on opposite axial ends of the bobbin. Each of the first and second yokes includes a magnetic pole section extending along an axial direction of the coil bobbin and facing the external circumferential surface of the coil bobbin, an insertion section t extending along the axial direction of the coil bobbin and facing the internal circumferential surface of the coil bobbin, and a connecting section extending radial direction of the coil bobbin and connecting the first magnetic pole section and the first insertion section together. The insertion sections of the first yokes have first end portions that abut two corresponding ones of second end portion of the insertion sections of the second yokes.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: November 11, 2014
    Assignee: Shimano Inc.
    Inventor: Hiroshi Hasegawa
  • Publication number: 20140300234
    Abstract: A rotor for a rotary electric machine, the rotor including first and second pole pieces each having a respective magnetic hub arranged for rotation about an axis along which they are spaced. Pluralities of magnetic first and second pole fingers are spaced from each other and extend between the hubs. Each pole finger has a proximal end connected to its respective hub, and an axially opposite distal end. The first and second pole fingers circumferentially alternate about the axis, and each pole finger has a respective radially inner surface defining a cavity that extends axially from the distal end to a cavity terminus. Relative to each pole finger, at a respective axial position between the distal end and the cavity terminus the radial distance between the axis and the radially inner surface is substantially greater inside of the cavity than outside of the cavity.
    Type: Application
    Filed: November 20, 2013
    Publication date: October 9, 2014
    Applicant: Remy Technologies, LLC
    Inventor: Michael D. Bradfield