Having A Particular Outer Peripheral Shape Patents (Class 310/216.055)
  • Patent number: 11121601
    Abstract: A stator system for an electric vehicle motor may include a stator forming a back iron and a plurality of teeth extending inwardly therefrom, the stator including a plurality of attachment points protruding radially outwardly from the back iron, and a case configured to house the stator and defining a plurality of case openings, each configured to receive one of the attachment points, wherein each attachment point defines at least one T-slot configured to receive a nut that cooperates with a bolt extending through the case to connect the case to the stator.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: September 14, 2021
    Assignee: Ford Global Technologies, LLC
    Inventor: Bradley Ronald Heuver
  • Patent number: 10389189
    Abstract: The disc-type magnetism-increasing DC generator is a pure magnetic DC generator composed of a drive motor and a DC generator, as well as a disc-brush conductive output device; the DC generator stator is composed of a permanent magnetic source and a magnetism-increasing coil casing; the rotor is composed of a generator disc and a shaft, as well as conductive inner-shaft terminals; the drive motor and the DC generator run on the same shaft; when the motor rotates after it is electrified, the generator disc rotor cuts the magnetic line of force and generates electricity; and a current is generated when an electrical equipment consumes the electricity; when the current passes the magnetism-increasing coil, it generates a magnetic potential, enhancing the magnetic field strength of the DC generator's magnetic source, thereby increasing magnetic flux and output power of the DC generator.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: August 20, 2019
    Inventor: Zhankui Xu
  • Patent number: 9991759
    Abstract: An airflow system may comprise a fan radially mounted on a motor with a first plurality of fins surrounding the motor disposed to provide airflow in a first direction, and a second plurality of fins surrounding the motor disposed to provide airflow in a second direction. A housing may surround the plurality of fins.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: June 5, 2018
    Inventors: Stephen White, Evgeni Ganev, Leroy Allen Fizer, Norman Clampitt, Pius Bahn
  • Patent number: 9800101
    Abstract: An axial flux motor intended for fixing to a machine comprises a stator stack as well as a rotor installed to rotate with respect to the stator stack, which rotor determines the axis of rotation. The stator stack comprises sectional slots on the side intersecting the axis of rotation, preferably the sectional slots include radial sectional slots or are radial sectional slots and/or there are 6-12 of them. Into each respective sectional slot a fixing part can be installed, which at least in the direction of the axis of rotation shape-locks into the sectional slot in question. The axial flux motor can be fixed to the machine by fixing at least some of the fixing parts to the machine.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: October 24, 2017
    Assignee: Kone Corporation
    Inventors: Asmo Tenhunen, Jussi Huppunen, Tuukka Korhonen
  • Patent number: 9618020
    Abstract: A power generation apparatus according to the present invention includes: an expander; a generator that includes a generator rotor driven by the expander and a stator disposed outside the generator rotor in the radial direction; and a casing that includes an expander chamber accommodating the expander and a generator chamber accommodating the generator. The casing includes a first communication portion that causes an expansion chamber which gradually expands a working medium by the expander in the expander chamber to communicate with a front generator portion which is located nearer the expansion chamber than the generator in the generator chamber and a second communication portion that causes a portion which is a downstream portion from the expansion chamber and is located near the expansion chamber with respect to the generator to communicate with the front generator portion.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: April 11, 2017
    Assignee: Kobe Steel, Ltd.
    Inventor: Noboru Tsuboi
  • Patent number: 8916254
    Abstract: A method for manufacturing a laminated core is provided that makes positions of boundary parts of laminated blocks and improves an efficiency of a welding operation of the blocks. The above-described object is achieved by the method of manufacturing the laminated core 10 including a process that forms a plurality of blocks 12 having a plurality of welding parts 13 to 15 of different forms or colors at intervals of prescribed angles in the circumferential direction, a process that laminates the plurality of blocks 12 under a state that the blocks are rotated at intervals of the prescribed angles and a process that welds the welding parts 13 to 15 having the different forms or colors of the laminated blocks 12 to form integrally the plurality of blocks 12.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: December 23, 2014
    Assignees: Mitsui High-Tec, Inc, Toyota Jidosha Kabushiki Kaisha
    Inventors: Akira Nagai, Jin Oda, Tatsuhiko Mizutani, Yosuke Kurono
  • Patent number: 8622722
    Abstract: A fuel pump, for an internal combustion engine, has a housing accommodating a pump and a motor. The motor is arranged to drive the pump so as to pump fuel through the housing. The motor has a wound stator having a plurality of inwardly directed teeth about which a stator winding is wound, and a radially outer surface in contact with an inner surface of the housing. One or more pathways are formed between the inner surface of the housing and the outer surface of the stator, for the flow of fuel there through. Each pathway is formed by an axially extending recess formed in the outer surface of the stator and aligned with a selected tooth of the stator.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: January 7, 2014
    Assignee: Johnson Electric S.A.
    Inventors: Yong Bin Li, Wei Feng Yuan, Ning Sun, Xin Ping Wang
  • Publication number: 20130026874
    Abstract: A motor includes a driving shaft, a rotor attached to the driving shaft, and a stator having a substantially cylindrical stator core provided around the rotor, and a plurality of coils wound around the stator core in a distributed winding manner The stator core includes three separated stator core parts aligned along a peripheral direction, and each of the coils is disposed so as not to lie astride any two of the three separated stator core parts. At least one coil end of the plurality of the coils is disposed to pass through an inner side relative to an inner peripheral surface of the stator core.
    Type: Application
    Filed: March 28, 2011
    Publication date: January 31, 2013
    Inventors: Toshinari Kondou, Yoshiki Yasuda, Akio Yamagiwa
  • Patent number: 8339011
    Abstract: A rotor assembly for an electromechanical device includes a molded wire support. The wire support has a body including a first side spaced from a second side and a hole extending through the sides and configured to receive a shaft. The body includes a wall about the hole extending to the first side. At least one end turn support extends outwardly from the wall and is configured to support wires. A molded pocket extends into the wall from the second side without penetrating through to the first side.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: December 25, 2012
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Henry R. Vanderzyden
  • Publication number: 20120315168
    Abstract: An exemplary heat dissipation fan includes a rotor and a stator. The rotor includes a hub, a central shaft extending down from a top end of the hub, the shaft having a free end far from the top end of the hub. A magnetic element attached to an inner periphery of the hub. The stator includes a stator core consisting layers of yokes, two insulation frames mounted at two opposite ends of the stator core and a coil wound around the insulation frames. An outer surface of the stator faces and is spaced from an inner surface of the magnetic element of the rotor with a clearance defined therebetween. A width of a bottom end of the clearance adjacent to the free end of the shaft being smaller than a width of a top end of the clearance.
    Type: Application
    Filed: October 20, 2011
    Publication date: December 13, 2012
    Applicants: Foxconn Technology Co., Ltd., Fu Zhun Precision Industry (Shen Zhen) Co., Ltd.
  • Patent number: 8246322
    Abstract: A positioning and retaining element has a cylindrical rotary belt of substantially constant thickness, having an inner diameter substantially equal to the outer diameter of the stator to be capable of being mounted substantially coaxial clamped about the stator. The positioning and retaining element also has a number of support members projecting radially from the belt outwards and having each a support surface on the housing of the compressor, the support surfaces being located on the lateral surface of a fictitious rotary cylinder of same axis as the other belt and of diameter substantially equal to the inner diameter of the housing, such that the positioning and retaining element can be mounted clamped inside the housing.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: August 21, 2012
    Assignee: Danfoss Commercial Compressors
    Inventors: David Genevois, Pierre Ginies
  • Patent number: 8138654
    Abstract: In one embodiment, a system includes a stator mounting kit that includes multiple radial adjustment shims having different thicknesses from one another. The stator mounting kit also includes multiple stator alignment adapters having different circumferential alignments between a keybar mount and a spring bar mount. The stator mounting kit is configured to enable radial and circumferential alignment between each spring bar and respective keybar in a stator framework via selection of one of the stator alignment adapters and selection of one or more of the radial adjustment shims.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: March 20, 2012
    Assignee: General Electric Company
    Inventor: William Hunter Boardman, IV
  • Publication number: 20110285242
    Abstract: A rotating electrical machine has a rotor composed of laminations having salient poles. The poles have one or more holes which are positioned so as to reduce the peak stress experienced by the lamination when the rotor is rotating. The holes are chosen according to a disclosed design procedure which gives a reduction in peak stress for a given limit on the output of the machine.
    Type: Application
    Filed: May 11, 2011
    Publication date: November 24, 2011
    Applicant: NIDEC SR DRIVES LTD.
    Inventors: Phillip George Dickinson, Paul Andrew Sykes, Norman Neilson Fulton, Thilak Raj Durairaj
  • Patent number: 8049388
    Abstract: The object of the invention is a rotor for an electrical machine excited by permanent magnets, said rotor comprising a substantially cylindrical magnetic body of the rotor fitted onto the shaft of the electrical machine and a set of permanent magnets used to create a first and a second pole alternately in the circumferential direction, excited in opposite directions. The permanent magnets are fitted into openings arranged within the rotor. The rotor comprises a body part with several segments extending to the outer circumference in the circumferential direction and an outward tapered section remaining between the segments in the radial direction of the rotor. Permanent-magnet pieces are arranged between each section and segment.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: November 1, 2011
    Assignee: ABB OY
    Inventor: Jere Kolehmainen
  • Patent number: 8004142
    Abstract: A stator assembly is provided with detachable teeth that are made of magnetic powder material. The teeth are so configured and sized as to be interconnected to a core body of the stator with pre-formed coils that are positioned between adjacent teeth.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: August 23, 2011
    Assignee: TM4 Inc.
    Inventors: Stephane Poulin, Ruisheng Shi, Sebastien Bigras, Gabriel Rakotonirina, Steve Fleming, Martin Houle
  • Patent number: 7986072
    Abstract: A stator core of an electric rotating machine has steel sheets formed of a steel plate wound in the cylindrical shape. Each sheet has teeth disposed along the circumferential direction of the core on the inner side of the sheet, divided end portions disposed along the circumferential direction on the outer side of the sheet, slits alternately disposed with the divided end portions along the circumferential direction, and a boundary portion disposed between the group of teeth and the group of divided end portions. The teeth and the divided end portions substantially have the same constant thickness. The boundary portion has a changing thickness decreased toward the outer side.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: July 26, 2011
    Assignee: Denso Corporation
    Inventor: Takashi Tokizawa
  • Publication number: 20110133590
    Abstract: A rotor structure for an interior permanent magnet (IPM) electromotive machine is provided. The rotor structure may include at least one rotor lamination, which in turn may include at least one slot arranged to receive at least one permanent magnet. The slot divides the rotor lamination into a pole region and a yoke region. At least one bridge is arranged to connect the pole region to the yoke region at an outer edge of the lamination. The outer edge of the lamination is profiled along a segment of the bridge to define a concave curved profile for the bridge. The concave curved profile for the bridge allows to selectively size a thickness of the bridge to affect at least some electromagnetic and/or mechanical characteristic of the machine.
    Type: Application
    Filed: February 26, 2010
    Publication date: June 9, 2011
    Inventors: MURTUZA LOKHANDWALLA, Rammohan Rao Kalluri, Kiruba Sivasubramaniam Haran
  • Patent number: 7868509
    Abstract: It is an object to obtain a highly efficient and low-cost single-phase motor and a hermetic compressor employing the motor by producing the motor in a form that allows a proper material layout, with securing a magnetic path of a coreback of a stator iron core. According to the present invention, in a single-phase motor having a stator including a stator iron core formed by laminating a plurality of electromagnetic steel sheets and provided with a slot and single-phase two-pole distributed windings composed of a main winding and an auxiliary winding contained in the slot, and a rotor placed through a gap on an inner circumference of the stator, at least five notches each having a roughly straight lined shape are provided on an outer circumference of the stator iron core, so that a quadrangle is formed by straight lines including four notches out of the at least five notches.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: January 11, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hayato Yoshino, Yoshio Takita, Koji Yabe, Osamu Kazama
  • Patent number: 7737600
    Abstract: In a stator core composed of a powder compacted magnetic body, a yoke part comprises a protrusion protruding from an axial end face of a tooth. The tooth has an axial length gradually decreases towards an outside along the radial direction of the stator core, and a circumferential length which gradually increases towards an outside along the radial direction of the stator core. In one of the cross sections of stator core perpendicular to a radial direction, the height difference between axial end faces of the yoke part and the tooth is substantially equal to an axial length of a coil end part. Further, a cross-sectional area of the tooth perpendicular to the radial direction is substantially maintained constant along the radial direction, and the cross-sectional area is secured at a junction between the tooth and the yoke part, while half of the cross-sectional area is secured in a circumferential cross section of the yoke part.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: June 15, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yasuhiro Endo, Ryoji Mizutani, Kazutaka Tatematsu, Kenji Harada, Toshiya Yamaguchi, Eisuke Hoshina
  • Patent number: 7719157
    Abstract: A motor includes a rotor having a permanent magnet fitted thereon, and a stator having an inner peripheral surface spaced a predetermined distance from an outer peripheral surface of the rotor in opposed relation thereto, and the stator is press-fitted in a motor case to be fixed thereto with its outer peripheral surface. A plurality of projecting portions are formed on an inner peripheral surface of the motor case. Recess portions for engagement with the respective projecting portions are formed in the outer peripheral surface of the stator. When the stator is press-fitted into the motor case, the stator is fixed to the motor case with inner bottom surfaces of the recess portions serving as press-fitting surfaces. The projecting portions of the motor case are engaged respectively in the recess portions of the stator, thereby preventing the rotation of the stator relative to the motor case.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: May 18, 2010
    Assignee: JTEKT Corporation
    Inventor: Yasuhiro Yukitake
  • Patent number: 7709992
    Abstract: A stator assembly adapted for use in an electric motor. The assembly includes a stator core having an annular rim and a plurality of teeth extending radially inward from the rim. The stator core has an outer diameter, a root tooth diameter and an inner diameter. Each tooth has a root, a neck extending inward from the root, a head opposite the root, and a length measured from its root to its head. The neck has a width. Each adjacent pair of teeth define a slot having an area. The assembly also includes a winding having aluminum and/or copper wrapped around at least three teeth of the stator core. The stator core and winding have four, six or eight magnetic dipoles. The stator core outer diameter is in a range from about 5.1 inches to about 5.9 inches. The stator core inner diameter is less than about 3.0 inches.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: May 4, 2010
    Assignee: Emerson Electric Co.
    Inventors: John H. Hussey, Alan D. Crapo, Thomas M. Bourquin
  • Patent number: 7683518
    Abstract: A motor includes a stator formed of a stator iron-core having salient pole iron-cores and windings, and a rotor having a rotor iron-core in which permanent magnets are buried. A magnetic pole centerline connecting a rotary center of the rotor to a magnetic pole center crosses an external shape of the rotor iron-core at end point X, and the magnetic-pole boundary line connecting the rotary center to a magnetic pole boundary point crosses the external shape of the rotor iron-core at end point Z. A straight line angled at a given angle ?a from the magnetic pole centerline has end point A. Then a sectional view of the rotor iron-core shows an arc drawn between the end points X and A, and the arc's center is the rotary center. The end points A and Z are connected by one or more than one straight lines in series.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: March 23, 2010
    Assignee: Panasonic Corporation
    Inventors: Yuichi Yoshikawa, Kiyomi Kawamura, Hiroshi Murakami, Hideharu Hiwaki, Yasushi Kamada, Hiroki Sato
  • Patent number: 7652405
    Abstract: A plurality of convex portions are located inside of a virtual circumferential surface. Each convex portion connects an adjacent pair of circumferential portions with each other. Each convex portion is an arcuate curve bulging radially outward. Each convex portion defines a minimum radius. A difference between a radius R and the minimum radius is a depth Dh. Dhr=Dh×25.5/R. A range of an angular width A in relation to circumferential portion and a range of the depth Dh are set by the following expression, (5.6×Dhr+11.3)°×6/p?A<35°×6/p and A<[360/p?2×arccos]°??(1) Therefore, decrease in torque is prevented. Torque pulsation is suppressed.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: January 26, 2010
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Taku Adaniya, Minoru Mera, Kiyoshi Uetsuji, Ai Saeki, Masatoshi Kobayashi, Hiroshi Fukasaku
  • Publication number: 20090179518
    Abstract: A permanent magnet rotating electric machine comprises a stator having stator windings wound round a stator iron core and a permanent magnet rotor having a plurality of inserted permanent magnets in which the polarity is alternately arranged in the peripheral direction in the rotor iron core. The rotor iron core of the permanent magnets is composed of magnetic pole pieces, auxiliary magnetic poles, and a stator yoke, and furthermore has concavities formed on the air gap face of the magnetic pole pieces of the rotor iron core of the permanent magnets, gently tilting from the central part of the magnetic poles to the end thereof. In a permanent magnet rotating electric machine, effects of iron loss are reduced, and an electric car using highly efficient permanent magnet rotating electric machine are realized.
    Type: Application
    Filed: March 18, 2009
    Publication date: July 16, 2009
    Applicant: Hitachi, Ltd.
    Inventors: Fumio TAJIMA, Yutaka MATSUNOBU, Masashi KITAMURA, Noriaki HINO, Takashi KOBAYASHI, Shigeru KAKUGAWA, Takashi YASUHARA