Having A Particular Outer Peripheral Shape Patents (Class 310/216.055)
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Patent number: 11121601Abstract: 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: GrantFiled: March 26, 2019Date of Patent: September 14, 2021Assignee: Ford Global Technologies, LLCInventor: Bradley Ronald Heuver
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Patent number: 10389189Abstract: 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: GrantFiled: December 4, 2017Date of Patent: August 20, 2019Inventor: Zhankui Xu
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Patent number: 9991759Abstract: 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: GrantFiled: March 6, 2014Date of Patent: June 5, 2018Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Stephen White, Evgeni Ganev, Leroy Allen Fizer, Norman Clampitt, Pius Bahn
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Patent number: 9800101Abstract: 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: GrantFiled: February 27, 2015Date of Patent: October 24, 2017Assignee: Kone CorporationInventors: Asmo Tenhunen, Jussi Huppunen, Tuukka Korhonen
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Patent number: 9618020Abstract: 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: GrantFiled: January 14, 2014Date of Patent: April 11, 2017Assignee: Kobe Steel, Ltd.Inventor: Noboru Tsuboi
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Patent number: 8916254Abstract: 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: GrantFiled: April 23, 2010Date of Patent: December 23, 2014Assignees: Mitsui High-Tec, Inc, Toyota Jidosha Kabushiki KaishaInventors: Akira Nagai, Jin Oda, Tatsuhiko Mizutani, Yosuke Kurono
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Patent number: 8622722Abstract: 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: GrantFiled: September 3, 2009Date of Patent: January 7, 2014Assignee: Johnson Electric S.A.Inventors: Yong Bin Li, Wei Feng Yuan, Ning Sun, Xin Ping Wang
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Publication number: 20130026874Abstract: 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: ApplicationFiled: March 28, 2011Publication date: January 31, 2013Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Toshinari Kondou, Yoshiki Yasuda, Akio Yamagiwa
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Patent number: 8339011Abstract: 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: GrantFiled: December 7, 2009Date of Patent: December 25, 2012Assignee: Hamilton Sundstrand CorporationInventor: Henry R. Vanderzyden
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Publication number: 20120315168Abstract: 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: ApplicationFiled: October 20, 2011Publication date: December 13, 2012Applicants: Foxconn Technology Co., Ltd., Fu Zhun Precision Industry (Shen Zhen) Co., Ltd.Inventors: JUN-HUI YAN, YONG-KANG ZHANG, YUNG-PING LIN
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Patent number: 8246322Abstract: 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: GrantFiled: June 22, 2006Date of Patent: August 21, 2012Assignee: Danfoss Commercial CompressorsInventors: David Genevois, Pierre Ginies
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Patent number: 8138654Abstract: 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: GrantFiled: May 19, 2009Date of Patent: March 20, 2012Assignee: General Electric CompanyInventor: William Hunter Boardman, IV
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Publication number: 20110285242Abstract: 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: ApplicationFiled: May 11, 2011Publication date: November 24, 2011Applicant: NIDEC SR DRIVES LTD.Inventors: Phillip George Dickinson, Paul Andrew Sykes, Norman Neilson Fulton, Thilak Raj Durairaj
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Patent number: 8049388Abstract: 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: GrantFiled: August 31, 2007Date of Patent: November 1, 2011Assignee: ABB OYInventor: Jere Kolehmainen
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Patent number: 8004142Abstract: 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: GrantFiled: February 10, 2009Date of Patent: August 23, 2011Assignee: TM4 Inc.Inventors: Stephane Poulin, Ruisheng Shi, Sebastien Bigras, Gabriel Rakotonirina, Steve Fleming, Martin Houle
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Patent number: 7986072Abstract: 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: GrantFiled: September 29, 2008Date of Patent: July 26, 2011Assignee: Denso CorporationInventor: Takashi Tokizawa
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Publication number: 20110133590Abstract: 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: ApplicationFiled: February 26, 2010Publication date: June 9, 2011Inventors: MURTUZA LOKHANDWALLA, Rammohan Rao Kalluri, Kiruba Sivasubramaniam Haran
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Patent number: 7868509Abstract: 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: GrantFiled: December 9, 2005Date of Patent: January 11, 2011Assignee: Mitsubishi Electric CorporationInventors: Hayato Yoshino, Yoshio Takita, Koji Yabe, Osamu Kazama
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Patent number: 7737600Abstract: 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: GrantFiled: October 28, 2005Date of Patent: June 15, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yasuhiro Endo, Ryoji Mizutani, Kazutaka Tatematsu, Kenji Harada, Toshiya Yamaguchi, Eisuke Hoshina
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Patent number: 7719157Abstract: 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: GrantFiled: September 10, 2007Date of Patent: May 18, 2010Assignee: JTEKT CorporationInventor: Yasuhiro Yukitake
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Patent number: 7709992Abstract: 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: GrantFiled: July 31, 2008Date of Patent: May 4, 2010Assignee: Emerson Electric Co.Inventors: John H. Hussey, Alan D. Crapo, Thomas M. Bourquin
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Patent number: 7683518Abstract: 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: GrantFiled: February 28, 2007Date of Patent: March 23, 2010Assignee: Panasonic CorporationInventors: Yuichi Yoshikawa, Kiyomi Kawamura, Hiroshi Murakami, Hideharu Hiwaki, Yasushi Kamada, Hiroki Sato
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Patent number: 7652405Abstract: 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: GrantFiled: February 27, 2007Date of Patent: January 26, 2010Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Taku Adaniya, Minoru Mera, Kiyoshi Uetsuji, Ai Saeki, Masatoshi Kobayashi, Hiroshi Fukasaku
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Publication number: 20090179518Abstract: 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: ApplicationFiled: March 18, 2009Publication date: July 16, 2009Applicant: Hitachi, Ltd.Inventors: Fumio TAJIMA, Yutaka MATSUNOBU, Masashi KITAMURA, Noriaki HINO, Takashi KOBAYASHI, Shigeru KAKUGAWA, Takashi YASUHARA