End Shield Patents (Class 310/400)
  • Patent number: 11539264
    Abstract: A vehicle electric motor including: a tubular-shaped stator core constituted by electromagnetic steel sheets that are laminated on each other; a rotor disposed inside the stator core so as to be rotated about an axis; and a housing storing therein the tubular-shaped stator core and the rotor, and including a circumferential wall and axially opposite end walls that are opposed to each other in a direction parallel with the axis. The stator core is fixed at one of its axially end portions to one of the axially opposite end walls of the housing. The housing includes a stator-core-inclination restraining portion that protrudes from an inner circumferential surface of the circumferential wall of the housing toward a part of an outer circumferential surface of the stator core, wherein the part is located on a side of the other of the axially end portions of the stator core.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: December 27, 2022
    Inventors: Motoki Takeno, Yoshitada Yamagishi, Katsuhide Kitagawa, Masaki Mori, Taketo Takeuchi
  • Patent number: 10680493
    Abstract: A vehicle drive device includes an electric motor that is configured to drive a vehicle, a case that houses therein the electric motor and a lubricating oil storage unit that stores lubricating oil, and a soundproof material that covers one side portion of the case. The one side portion of the case has a through hole through which a shaft member is inserted. An outer surface of the soundproof material is covered with a cover member. The cover member includes a partition wall portion that blocks a space between an opening of the through hole and the soundproof material.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: June 9, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Manabu Sakurada
  • Patent number: 10199906
    Abstract: An electric machine is disclosed. The electric machine may include a rotor and an endplate. The endplate may define an aperture, an inner locknut surface and a balance-ring surface. The locknut surface may extend from a periphery of the aperture to a first diameter. The balance-ring surface may extend from a second diameter that is greater than the first diameter to an outer periphery of the endplate. Before assembly, the balance-ring surface may be adjacent to the rotor and the locknut surface may be spaced apart from the rotor.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: February 5, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Cyrille Goldstein, Joel Hetrick
  • Patent number: 10199891
    Abstract: A rotor includes: a rotor core; magnets disposed in housing holes having openings in end faces of the rotor core; a filler injected through the openings into the housing holes; and end plates fixed to the end faces. The end plates have recesses at positions facing inlets of the filler.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: February 5, 2019
    Inventors: Masashi Matsumoto, Takahiro Yoneda, Yasuaki Shirasaki
  • Patent number: 9436063
    Abstract: A blade driving device according to the present invention includes: a substrate having an aperture; a first blade and a second blade which open and close the aperture; a first driving member which drives the first blade; a second driving member which drives the second blade; a first actuator which operates the first driving member; and a second actuator which operates the second driving member, wherein the first actuator and the second actuator extend along a first direction which intersects an axial direction of the aperture on a primary surface of the substrate and are arranged in a second direction which intersects the axial direction and the first direction.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: September 6, 2016
    Inventors: Yoichi Nakano, Motoharu Sakurai
  • Patent number: 9246362
    Abstract: A stator is formed from two stacks of laminations have different outer perimeters to enable electrical motors with different output ratings to be built with a same hub-to-hub distance. The stator includes a first plurality of laminations having a first outer perimeter with at least two flanges with mounting holes, and a second plurality of laminations having a second outer perimeter that is different than the first outer perimeter. The second outer perimeter of the laminations in the second plurality of laminations are configured to enable a portion of an endplate to pass the second plurality of laminations and contact a face of the first plurality of laminations.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: January 26, 2016
    Assignee: Nidec Motor Corporation
    Inventors: Marshall J. Huggins, Stephen J. Burton
  • Patent number: 9035528
    Abstract: A press plate (5) for tightening the metal sheets (2) of a stator core of an electric machine has an annular element (16) with a plurality of holes (17) provided at a side wall (11) thereof. The holes (17) have an elongated recessed top portion (20) and a cylindrical recessed bottom portion (21) extending from the ceiling (22) of the elongated recessed top portion (20).
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: May 19, 2015
    Inventors: Leszek Stachyra, Jacek Mariusz Kanicki, Daniel Hediger, Lothar Eckert
  • Patent number: 8937414
    Abstract: Disclosed are an electric motor and an electric vehicle having the same. The electric motor includes a stator including a stator core and a stator coil wound around the stator core, a rotor disposed to be rotatable with respect to the stator, and a cooling unit configured to allow a cooling fluid to flow therein and disposed to be in contact with the stator to cool the stator, wherein an outer surface of the stator core includes grooves in which the cooling unit is inserted. Cooling performance can be enhanced by shortening a heat transmission path, and the cooling unit can be easily fabricated and coupled.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: January 20, 2015
    Assignee: LG Electronics Inc.
    Inventors: Hyeokjin Song, Kwangwook Chun, Jacho Kim, Jiseong Park, Seungdo Han
  • Patent number: 8937416
    Abstract: A resin protective cover is prepared so as to have a cup shape that is constituted by a floor portion and a tubular peripheral wall portion, and that can be mounted to a rear bracket so as to cover a rectifying apparatus and a voltage regulator that are disposed axially outside the rear bracket. The protective cover includes an engaging hook that includes: a shank portion that is disposed so as to extend from an opening end of the peripheral wall portion; and a hook portion that is disposed so as to project radially outward from a tip end of the shank portion, and the protective cover is held on the rear bracket elastically in an engaged state by the engaging hook being inserted into an engaging aperture that is formed on a casing.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: January 20, 2015
    Assignee: Mitsubishi Electric Corp.
    Inventors: Kazunori Tanaka, Toshiyuki Oonishi
  • Patent number: 8896189
    Abstract: A stator for an electric rotating machine includes a hollow cylindrical stator core, a stator coil, an outer cylinder, and at least one restraint. The stator core is comprised of a plurality of stator core segments that are arranged in the circumferential direction of the stator core to adjoin one another in the circumferential direction. The stator coil is mounted on the stator core. The outer cylinder is fitted on the radially outer surfaces of the stator core segments so as to fasten the stator core segments together. The restraint is arranged on an axial side of the stator core and retained by the outer cylinder so as to restrain axial deformation of the stator core segments due to the fastening force of the outer cylinder.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: November 25, 2014
    Assignee: Denso Corporation
    Inventors: Hiroyuki Ikuta, Atsuo Ishizuka
  • Patent number: 8648518
    Abstract: A power driven component inside a compressor is disposed with a stator and rotors. The stator has an iron core in a circular ring and stator coils in a tightly wound manner. A vertical interval is formed between adjacent stator coils. A cover body is formed on the stator and a shield member that is formed with an upper portion along each stator coil and bending curve portions at two sides of the upper portion. Each bending curve portion is extended toward the interval from the upper portion. A sealed cover portion is connected between the bending curve portions of the upper portion and correspondingly seals each interval to reduce noise of the compressor and oil circulation rate.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: February 11, 2014
    Assignee: Rechi Precision Co., Ltd.
    Inventors: Wen-Ho Yu, Fu-Rong Chen, Hung-Ming Liao, Chih-Chung Chen
  • Patent number: 8643256
    Abstract: Electric motors are disclosed with coils which induce a magnetic flux field which by its relationship with ferromagnetic poles provide the motoring force without use of an auxiliary magnetic field. The motors may be employed with fixed or pivotably mounted brushes. Pivotable brushes for electric motor brushes are disclosed.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: February 4, 2014
    Inventor: Anthony Freakes
  • Publication number: 20130241365
    Abstract: A generator, particularly for a wind turbine, having a rotor and a stator is provided. The rotor includes at least one disc-like shaped rotor end plate supporting the rotor and the stator includes at least one disc-like shaped stator end plate supporting the stator, wherein the at least one rotor end plate and/or the at least one stator end plate at least partially extends tilted relative to the centre axis of the generator.
    Type: Application
    Filed: September 14, 2012
    Publication date: September 19, 2013
    Inventors: James Kenneth Booth, Uffe Eriksen, Jacob Blach Nielsen
  • Patent number: 8482178
    Abstract: In a rotor structure of a permanent magnet type rotary machine comprising a cylindrical permanent magnet 3 fixed on an outer peripheral surface of a rotor shaft 2, wherein torque acting on the permanent magnet 3 is transmitted to the rotor shaft 2, the rotor structure further comprises two annular side plates 4 and a holding ring 5. Each side plate has an axial hole 4a into which the rotor shaft 2 is fitted so as to rotate with the side plates integrally and the side plates 4 are attached on the both end surface of the permanent magnet 3, respectively so as to confront with each other. A circular U-shaped groove 4c coaxially with the axial hole 4a is provided at a end surface 4b for facing with the permanent magnet 3 of each side plate 4. The holding ring 5 is formed cylindrically and covers circumferential sections of the permanent magnet 3 and the side plates 4 and fasten the permanent magnet 3 and the side plates 4 so as to move them integrally.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: July 9, 2013
    Assignee: Meidensha Corporation
    Inventors: Takashi Okitsu, Daiki Matsuhashi, Yukimasa Hisamitsu, Toru Kakebayashi
  • Patent number: 8482173
    Abstract: An explosion proof motor including a stationary assembly and a rotatable assembly is described. The stationary assembly includes a stator that defines a stator bore. The rotatable assembly includes a rotor and a rotor shaft extending substantially axially through the stator bore. The explosion proof motor includes a frame configured to at least partially surround the stator. The frame defines an interior and an exterior of the motor. The explosion proof motor also includes at least one end shield positioned at an end of the frame and a bearing cap positioned proximate to the interior side of the end shield. The explosion proof motor also includes a flame path gap defined between the end shield and the bearing cap. The flame path gap includes at least one section that extends substantially parallel to the rotor shaft.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: July 9, 2013
    Assignee: Regal Beloit America, Inc.
    Inventors: Scott Wright, Christopher T. Ohrmundt, Wesley K. Anderson
  • Patent number: 8421317
    Abstract: An electric motor has an end cap assembly comprising: a base and a cover. The base has a first chamber configured to receive a commutator, a second chamber configured to receive electronic components, and brush boxes having passages configured to receive brushes. The first chamber and the second chamber are respectively formed on opposite sides of the base. The passages of the brush boxes open into the first chamber to allow the brushes to slidably contact a commutator disposed therein. The cover is fixed to the base and covers the second chamber.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: April 16, 2013
    Assignee: Johnson Electric S.A.
    Inventors: Zhi Qiang Jiang, Bin Liu, Zhao Jing Lao
  • Patent number: 8410643
    Abstract: An electric motor assembly including a stator assembly and a rotor assembly extending through the stator assembly. A first end cap is located adjacent to a first end of the stator assembly and includes a bearing insert supporting a first end bearing for receiving an end of a rotor shaft. A second end cap is located adjacent to a second end of the stator assembly. An endbell is formed separately from the second end cap and is positioned within the second end cap. The endbell supports a bearing for a second end of the rotor shaft. An overmold material extends through the stator assembly. The overmold material may form the first end cap, supporting the bearing insert therein, and extends within and substantially fills an annular space within the second end cap.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: April 2, 2013
    Assignee: Globe Motors, Inc.
    Inventors: Daniel L. Kottmyer, Robert J. Marks
  • Patent number: 8390161
    Abstract: A motor includes a shaft that extends along a rotational axis and an end frame that includes a first surface that is substantially normal to the axis. A first plurality of annular features are arranged concentrically about the rotational axis and coupled to the first surface. A fan is mounted to the rotating shaft and including a slinger portion and a second surface. A second plurality of annular features are arranged concentrically about the rotational axis and coupled to the second surface. The first plurality of annular features cooperate with the second plurality of annular features to form a non-contact seal between the fan and the end frame.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: March 5, 2013
    Assignee: Regal Beloit America, Inc.
    Inventors: Matthew W. Critchley, Frank E. Staigl, III
  • Patent number: 8384261
    Abstract: A motor includes a stator having boss portions on an end plate thereof, a front plate provided on an upper surface of the stator, and a band connecting the stator and the front plate. Recess portions are formed adjacent to an outer peripheral edge of the front plate, and a protruding portion is provided in each recess portion. The band has a bottom plate part and attachment parts. The bottom plate part includes notched portions. Each attachment part includes an engagement portion at a tip end thereof which includes a notched portion. The notched portions of the bottom plate part are fitted with the boss portions of the end plate, and the notched portions of the engagement portions are fitted with the protruding portions of the front plate to form engagement hooks at most tip ends of the engagement portions, respectively, thereby connecting the stator and the front plate.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: February 26, 2013
    Assignee: Minebea Co., Ltd.
    Inventors: Shuhei Kinpara, Yuzuru Suzuki, Seiya Fujimoto
  • Patent number: 8299690
    Abstract: The invention provides a rotating electrical machine provided with stable rotation characteristics for enabling each core to be reliably fixed in arranging a plurality of cores annularly around the rotor even when the dimensional error occurs in manufacturing accuracy of each core, causing each division core itself to enhance the cooling property, and resolving instability of magnetic reluctance between division cores, where the rotating electrical machine has a plurality of stator cores obtained by laminating electromagnetic steel plates, winding coils wound around the stator cores via insulators, a pair of first and second bracket members that hold the plurality of stator cores from the front and back in the rotary shaft direction of the magnet rotor, and a fastening member that couples the first and second bracket members, in the first bracket member is formed a first contact surface for striking one end face of each of the stator cores to regulate so as to arrange the plurality of stator cores annularly,
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: October 30, 2012
    Assignee: Nisca Corporation
    Inventors: Yukihiko Hayakawa, Tokuro Kusunoki
  • Patent number: 8288905
    Abstract: A motor for HVAC applications, has a stator; a motor housing forming a part of the stator; an end cap fixed to the motor housing, and a rotor rotatably mounted confronting the stator. The end cap has an opening formed by a ring-shaped collar, the collar being at least partly disposed inside the motor housing. A plurality of projections on an outer circumferential surface of the collar are received in a plurality of receiving cutouts in the motor housing. Two fingers formed at the opening of each receiving cutout are deformed to lock the received projection inside the respective receiving cutout. At least three of the projections being pressed against the axially inner end of the respective receiving cutout.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: October 16, 2012
    Assignee: Johnson Electric S.A.
    Inventors: Rui Feng Qin, Fa Yun Qi
  • Patent number: 8278793
    Abstract: An electric motor assembly is configured to be mounted within a machine in a selected one of multiple possible motor dispositions corresponding with different motor axis positions. The motor assembly includes an endshield having a pair of opposite generally radially-extending mounting flanges. Each mounting flange presents an engagement portion that includes a plurality of spaced apart, dissimilarly-shaped recesses that extend in a generally common direction. The pair of flanges cooperatively present corresponding sets of like-shaped recesses, each of which is associated with one of the motor dispositions, but only one of the sets of recesses extends entirely through the engagement portions to define a single set of like-shaped fastener-receiving through holes corresponding to the selected motor disposition. A method of manufacturing components for electric motor assemblies configured to be mounted within respective machines in a selected one of multiple possible dispositions is also disclosed.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: October 2, 2012
    Assignee: Nidec Motor Corporation
    Inventors: Barry M. Newberg, Stephen J. Burton
  • Patent number: 8174173
    Abstract: A rotating electric machine includes a rotor, a stator and a load side bracket. The rotor has an outer rotor surface around a rotational axis. The stator is provided to surround the outer rotor surface. The stator includes a stator core and a stator coil. The stator core has teeth. Each of the teeth is inserted in the stator coil. The stator coil includes a coil end which is provided on a load side of the stator. The stator coil has an inner coil surface facing the teeth, an outer coil surface which is a reverse side of the inner coil surface. One end and another end of the wire are formed on the outer coil surface. The load side bracket has a groove in which the coil end is provided.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: May 8, 2012
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventors: Shogo Makino, Tuyoshi Nonaka
  • Patent number: 8159094
    Abstract: An electric motor having a housing, a stator mounted in the housing, and a rotor mounted in the housing for rotation relative to the stator about a central axis. A plurality of fluid flow passages extend through the rotor between opposite ends. An electro-magnetic drive system is adapted for driving rotation of the rotor relative to the stator. A fluid circulation system is in fluid communication with the fluid flow passages for providing fluid flow from the first end of the rotor to the second end of the rotor through at least one of the fluid flow passages and fluid flow from the second end of the rotor to the first end of the rotor through at least one other of the fluid flow passages. The rotor and components of the fluid circulation can be assembled to make a rotor assembly.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: April 17, 2012
    Assignee: Nidec Motor Corporation
    Inventors: Stephen M. Ruffing, Ronald W. Schmidt, Kenneth R. Friedman
  • Publication number: 20120025636
    Abstract: A high temperature motor has a stator with poles formed by wire windings, and a rotor with magnetic poles on a rotor shaft positioned coaxially within the stator. The stator and rotor are built up from stacks of magnetic-alloy laminations. The stator windings are made of high temperature magnet wire insulated with a vitreous enamel film, and the wire windings are bonded together with ceramic binder. A thin-walled cylinder is positioned coaxially between the rotor and the stator to prevent debris from the stator windings from reaching the rotor. The stator windings are wound on wire spools made of ceramic, thereby avoiding need for mica insulation and epoxy/adhesive. The stator and rotor are encased in a stator housing with rear and front end caps, and rear and front bearings for the rotor shaft are mounted on external sides of the end caps to keep debris from the motor migrating into the bearings' races.
    Type: Application
    Filed: July 26, 2011
    Publication date: February 2, 2012
    Inventor: ROOPNARINE
  • Patent number: 8084902
    Abstract: An end plate for a generator includes an end plate generally cylindrical and having a central bore to receive a rotor shaft. The end plate has a radially inner boss and a radially outer boss. The radially outer boss is positioned radially outwardly of windings in a generator. The radially inner boss is positioned radially inwardly of the windings in a generator. A main core assembly, a rotor, and a generator incorporating the end plates are all disclosed and claimed.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: December 27, 2011
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Glenn C. Lemmers, Jr., Scott R. Ganong
  • Patent number: 8063547
    Abstract: In the rotating electric machine of the present invention, a groove, in which a load side coil end is inserted, is formed on a load side bracket; a ceramic coat is formed on the inner surface of the groove; and one or more surfaces including at least the end surface of the load side coil end among the inner circumferential surface, outer circumferential surface, and end surface of the load side coil end adhere closely to the inner surface of the groove, in which the coat is formed.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: November 22, 2011
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventors: Shogo Makino, Tuyoshi Nonaka
  • Patent number: 8004135
    Abstract: An integrated electric motor and controller assembly includes a motor, a controller mounted to the motor, and a sensor device disposed at an interface between the motor and the controller. The sensor device includes a sensor disposed at the controller and a magnet disposed at the motor. An alignment structure is provided at the interface between the motor and the controller for positioning the sensor relative to the magnet when the controller is mounted to the motor. The magnet is recessed in the motor and the sensor is protected by a controller housing of the controller. This arrangement has the advantages of protecting the sensor device from damage during shipment and assembly and providing a quick assembly and connection of the sensor device to the motor and the controller.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: August 23, 2011
    Assignee: Nidec Motor Corporation
    Inventors: Gregory A. Peterson, Peter F. Stultz, Thomas Musser, Daniel Hilton
  • Patent number: 7960879
    Abstract: An airplane engine accessory box carrying an electrical machine such as an alternator, having a rotor that is guided in rotation in a bearing carried by a support part made of a material having a low coefficient of thermal expansion, itself carried by a stator cover that acts as a heat bridge between the body of the stator of the electrical machine and the casing of the accessory box.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: June 14, 2011
    Assignee: Hispano Suiza
    Inventors: Vincent Abousleiman, Hugues Henri Raymond Linet
  • Patent number: 7843104
    Abstract: A stator component whose composition and processing enable the component to axially compress magnetic sheets of a stator and also inhibit joule heating of the component to the extent that the need for a separate flux shield can be eliminated. The component is formed of a ductile iron alloy containing, by weight, about 3.25 to about 3.40% carbon, about 3.70 to about 3.80% silicon, about 4.50 to about 4.70% nickel, up to about 0.20% manganese, up to about 0.06% magnesium, less than 0.02% phosphorus, less than 0.02% sulfur, with the balance being iron and incidental impurities. Following heat treatment, the component exhibits properties that inhibit joule heating of the component by eddy currents induced by alternating magnetic fields of the stator.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: November 30, 2010
    Assignee: General Electric Company
    Inventor: Subrahmanyam Thangirala
  • Publication number: 20100231097
    Abstract: A micro-motor includes a base, a rotor and a retaining member. The base includes an axle tube. The rotor includes a rotary member and a support member arranged between the rotary member and the base. The rotary member has a central hole where the axle tube of the base extends. The retaining member is mounted on the base and surrounds the rotor. One end of the retaining member, which doesn't couple to the base, extends towards the axle tube to form a retaining portion. The retaining portion is within a rotational area of the rotor in an axial direction of the axle tube. The rotor is arranged between the retaining portion and the base. Accordingly, the retaining member can retain the rotor to prevent departure of the rotor from the axle tube of the base and the central structure of the micro-motor is effectively simplified.
    Type: Application
    Filed: March 12, 2009
    Publication date: September 16, 2010
    Inventors: Alex Horng, I-Yu Huang, Guan-Ming Chen
  • Publication number: 20100164313
    Abstract: An axial flux electrical machine including a housing, a stator located within the housing, a rotatable shaft carried by the housing by means of at least a main bearing, and a rotor fixed to the shaft within the housing. Magnetic attractive forces between the rotor and the stator produce an axial thrust on the main bearing and a biasing means (preferably in the form of a spring) is arranged to urge the shaft in a direction opposite to the axial thrust so as to reduce the net load on the main bearing. This reduction in net load on the main bearing increases bearing life and improves motor efficiency.
    Type: Application
    Filed: April 29, 2008
    Publication date: July 1, 2010
    Inventors: Charles Richard Langford, Steven Peter Camilleri