Having A Lamination Including A Radially Extending Mounting Projection (e.g., Mounting Ear) Patents (Class 310/216.049)
  • Patent number: 10666096
    Abstract: A direct-cooling stator core assembly having cooling channels so as to directly cool a stator core and a wound coil, and a driving motor for a vehicle including the same, are provided. The direct-cooling stator core assembly includes a stator core having an outer surface and a plurality of core recesses formed in the outer surface in a longitudinal direction. The direct-cooling stator core assembly further includes a cooling fluid supply member configured to supply cooling fluid to the core recesses in the stator core. In the direct-cooling stator core assembly, when cooling fluid is flowing through the core recesses, the cooling fluid flowing through the core recesses directly cools the stator core.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: May 26, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Young Jin Seo, Myung Kyu Jeong, Yeon Ho Kim, Jae Bum Park, Jae Min Yu, Hee Ra Lee, Ga Eun Lee
  • Patent number: 10230287
    Abstract: A heat sink with incorporated pin fin arrangement means is preferably part of a cooling jacket assembly, used for cooling the electric machine assembly. In general, the cooling jacket assembly comprises an annular cooling jacket body (i.e. a heat sink (4)) preferably adapted for receiving a stator (3) of the electric machine. In addition, the heat sink (4) of a cooling jacket comprises at least one substantially cylindrical wall section with at least one group of incorporated unidirectional heat transfer protuberances (i.e. pin fin (42) arrangement in free-form formation), wherein the heat sink (4) in cooperation with the electric machine assembly forms an annular gap (i.e. a cooling channel) preferably adapted for coolant flow circulation. The heat sink (4) according to the invention is preferably casted or molded as one body part in a single operation; hence the cost effective solution of high performance heat sink (2) is achieved.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: March 12, 2019
    Assignee: Mahle International GmbH
    Inventor: Peter Sever
  • Patent number: 9874199
    Abstract: A frame of a rotating electric machine of a wind turbine extends about an axis of rotation, and has a tubular structure having a cylindrical face and configured to support a plurality of active segments along the cylindrical face; an annular flange configured to connect the rotating electric machine to a main frame of a wind turbine; and a ring having an annular seat for a bearing; and wherein the tubular structure, the annular flange, and the ring are formed in one piece.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: January 23, 2018
    Assignee: WINDFIN B.V.
    Inventor: Norman Anselmi
  • Patent number: 9869319
    Abstract: A vacuum pump includes a pump inlet, a pump outlet, a rotor rotatable about an axis of rotation, at least one process gas pump stage for conveying a process gas present at the pump inlet from the pump inlet to the pump outlet, a motor space, and a drive motor which is arranged in the motor space, is configured for rotationally driving the rotor and which has a motor stator, wherein at least one gas path is provided for the process gas from the pump inlet to the pump outlet which leads through the motor space and which leads at least sectionally along the motor stator or through the motor stator.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: January 16, 2018
    Assignee: Pfeiffer Vacuum GmbH
    Inventors: Mirko Mekota, Jan Hofmann, Uwe Leib, Michael Schill, Bernhard Koch
  • Patent number: 9748808
    Abstract: A rotor core (100, 110) for an electrical motor with a rotational axis (6) and a central opening (200) to take up a shaft (4) of the electrical motor turning around the rotational axis (6), with the central opening (200) having a peripheral edge (201) with at least one attachment section (242), designed for attachment of the rotor core to the shaft by press fit, and at least one centering section (244), wherein the at least one centering section (244) and the at least one attachment section (242) are placed in different sections of the peripheral edge (201) in the circumferential direction (tangentially).
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: August 29, 2017
    Assignee: NIDEC Motors & Actuators (Germany) GmbH
    Inventor: Juergen Schmid
  • Patent number: 9673668
    Abstract: A shim pack to reduce vibration of a stator core is disclosed. The stator core may include a plurality of laminates coupled to a dovetail of a keybar and separated by a space block. The shim pack may include an elongated body extending from a first end including a dovetail slot configured to couple to the dovetail of the keybar to a second end extending radially at least substantially an entire length of an adjacent space block. A stator and related generator including the shim pack may also be provided.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: June 6, 2017
    Assignee: General Electric Company
    Inventors: Lakshminarayana Kanakamedala, Richard Nils Dawson, Jayan Kaadaapuram George
  • Patent number: 8941282
    Abstract: A stator core (105) including tabbed laminations (100) stacked face-to-face to form a plurality of tabbed lamination modules (107), with each tabbed lamination including a first tab (102) and a second tab (104) extending from a circumferential edge of the lamination. Non-tabbed laminations are also stacked face-to-face to form a plurality of non-tabbed lamination modules (109), each non-tabbed lamination lacking a tab. The tabbed lamination modules are stacked face-to-face in an alternating configuration with non-tabbed lamination modules. The tabs are used to attach the stator core to an inside surface of an electrical generator frame (2), such as by attaching the tabs to frame support rings (4) of the generator frame.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: January 27, 2015
    Assignee: Siemens Energy, Inc.
    Inventors: David T. Allen, Josue Marrero
  • Patent number: 8860280
    Abstract: A rotor includes a rotor core comprised of steel sheets that are laminated in the axial direction of the rotor core and a rotating component configured to rotate together with the rotor core. Each of the steel sheets has a positioning portion for circumferentially positioning the steel sheet with respect to the rotating component and is formed of a rolled steel material. For each of the steel sheets, the direction of rolling of the steel sheet is circumferentially offset from both imaginary lines X and Y by predetermined angles. Each of the steel sheets is shaped so that the circumferential position of the positioning portion thereof remains unchanged when the steel sheet is front-back inverted about the imaginary line X. When viewed along the axial direction, at least one of the steel sheets is front-back inverted with respect to and thus forms a mirror image of the other steel sheets.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: October 14, 2014
    Assignee: Denso Corporation
    Inventors: Yuuichirou Itou, Masahiro Seguchi, Yuki Takahashi, Hideaki Suzuki
  • Patent number: 8829769
    Abstract: A keybar or clamping bolt with a high-resistivity coating to protect an electric machine. The coating engages the laminations, flanges and frame rings and forms a part of electrical circuits through which harmful eddy currents circulate. One class of eddy currents, viz., core-fault currents, due to edge burrs or insulation defects, are forced to flow through this coating. The high resistance of the coating weakens the fault currents, preventing creation of hotspots that can cause core failure. Such coated keybar is in inexpensive alternative to traditional recoating and/or core-fault detection. Another class of eddy currents, viz., keybar currents, caused by over-fluxing, are also forced to flow through this coating. The high resistance of the coating weakens the keybar currents, so prevents core-end overheating. A coated keybar also allows the machine to operate at higher leading power factor. It also prevents core-decompression hence protects the machine against loose laminations.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: September 9, 2014
    Inventor: Dantam K. Rao
  • Patent number: 8823239
    Abstract: The invention relates to an electrical machine (8), in particular an electric motor, suitable for the adjustment by external force of elements of a motor vehicle, essentially for driving a steering booster. The inventive electrical machine comprises a rotor (7) and a shaft (10), the rotor having a plurality of plates (5), wherein the plates (5) are premounted on the shaft either individually or as a plate assembly (6) or by means of a plurality of plate assemblies (6), the rotor (7) being connected to the shaft (10). The plates (5) have resilient lugs (3) for fixing the plates (5) and/or plate assemblies (6) to the shaft (10). Furthermore, the plates (5) of the plate assemblies (6) comprise centering lugs (1) which serve to radially center the plate assembly (6) relative to the shaft (10).
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: September 2, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Stefan Ossenkopp, Joachim Becker, Holger Klatte, Erik Maurer, Ngoc-Thach Nguyen, Stefan Stoermer, Bruno Holzwarth, Tilo Koenig
  • Patent number: 8816546
    Abstract: Electromagnetic rotary machines, such as electrical power generators and electric motors, that have one or more active portions modularized into a set of modules. Each of the modules is secured to a support frame via a sliding-interlock system that allows that module to be slidingly engaged with the support frame. In some embodiments, each module can include an integrated coolant conduit that carries a coolant to cool the active portion during operation. The modules can each be self-contained in the respect that essentially all that needs to be done to form the active portion and corresponding portion of the cooling system is to install the modules and make any remaining electrical and coolant conduit connections.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: August 26, 2014
    Assignee: Northern Power Systems, Inc.
    Inventors: Garrett L. Bywaters, Trevor H. Cole, Jonathan A. Lynch, Jeffrey K. Petter
  • Publication number: 20140091672
    Abstract: A method of manufacturing a stator core includes die-cutting iron core materials from a band-shaped magnetic steel sheet, each iron core material being formed into an annular shape and having m number of interconnecting lugs protruding radially outward from an annular outer circumference of the magnetic steel sheet when m is equal to or larger than 2, and stacking a number of the iron core materials. In the die-cutting, parts of the magnetic steel sheet to be die-cut as the iron core material are arranged in n number of rows in a widthwise direction of the magnetic steel sheet when n is an integer equal to or larger than 2. Each one of the iron core materials included in one of n number of rows is located between the iron core materials lengthwise adjacent to each other in the row next to the one row.
    Type: Application
    Filed: August 26, 2013
    Publication date: April 3, 2014
    Applicant: Toshiba Industrial Products Manufacturing Corporation
    Inventors: Toyonobu YAMADA, Tadashi MORISHIMA, Katsumi KINOSHITA, Takayuki AKATSUKA, Hiroshi HORAI, Yasuo HIRANO, Masanori OHASHI, Takeo KAITO
  • Patent number: 8581468
    Abstract: A stator includes an annular stator core that is comprised of a plurality of stator core segments, an outer ring that is fitted on the radially outer surfaces of the stator core segments so as to fasten them together, and a stator coil mounted on the stator core. Each of the stator core segments is formed of a plurality of stator core sheets that are laminated in the axial direction of the stator core. Each of the stator core sheets has a reinforcement portion that includes a recess formed in one of the major surfaces of the stator core sheet and a protrusion formed on the other major surface. The stator core sheets are laminated so that for each adjoining pair of the stator core sheets, the protrusion of one of the stator core sheets is fitted in the recess of the other stator core sheet.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: November 12, 2013
    Assignee: Denso Corporation
    Inventors: Yuichi Kudose, Yusuke Hara, Takashi Hoshiyama
  • Patent number: 8487502
    Abstract: A stator core includes a first lamination and a second lamination. The first lamination is formed from a plurality of first segments and has a plurality of first mounting ears. The second lamination is formed from a plurality of second segments and has a plurality of second mounting ears. The first lamination and the second lamination are aligned with a common axis and are rotated about the common axis such that the first lamination is not aligned with the second lamination.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: July 16, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Edward L. Kaiser, Peter J. Savagian, Peter Bostwick
  • Patent number: 8410655
    Abstract: A stator includes a stator core, which has a plurality of stacked electromagnetic steel sheets, caulking portions configured to fix the plurality of electromagnetic steel sheets to each other, and a plurality of slot portions open toward an inner circumference side and arrayed along a circumferential direction. A number Q (an integer of 1 or greater) of the caulking portions, a number S of the slot portions and a number P of the poles satisfy Q?S and Q=P×n/2 (where n is an integer of 1 or greater). The stator is preferably part of a motor for a compressor.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: April 2, 2013
    Assignee: Daikin Industries, Ltd.
    Inventors: Hiroaki Kojima, Kazuo Ida, Yoshihiro Kataoka, Azusa Ujihara
  • 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: 8143759
    Abstract: A stator core for a generator includes a multiple of core laminations along an axis, each of the multiple of core laminations define at least one leg which extends in a radial direction from the axis.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: March 27, 2012
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Edward C. Allen, Andrew P. Grosskopf, Brady A. Manogue, Eric A. Brust
  • Patent number: 8035271
    Abstract: A stator core includes: an assembled stator core formed of annularly arranged, divided stator cores; a fixing member disposed at an outer circumferential surface of the assembled stator core and capable of pressing the divided stator cores inward in a radial direction of the assembled stator core to annularly arrange and thus fix the divided stator cores; and a weak portion provided between the divided stator cores and the fixing member and deformable by a force exerted from the fixing member to press the divided stator cores.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: October 11, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinya Sano, Eiji Yamada, Kazutaka Tatematsu
  • Patent number: 7938630
    Abstract: A compressor includes a compression mechanism, a motor coupled to the compression mechanism via a driving shaft, and a casing to accommodate the compression mechanism and the motor. The motor includes a stator, and a rotor disposed inside the stator and coupled to the driving shaft. The stator is spot-joined to the casing via a plurality of stator spot-joined portions at different positions along a circumferential direction about the driving shaft. Preferably, the stator spot-joined portions are disposed at different axial positions. Also, the stator spot-joined portions are preferably disposed at different circumferential positions from positions of compression mechanism-side spot-joined portions. When an accumulator is connected to the casing via a connection pipe, a straight line between any two of the plurality of stator spot-joined portions preferably crosses a vibration direction of a natural vibration mode of the accumulator.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: May 10, 2011
    Assignee: Daikin Industries, Ltd.
    Inventors: Wakana Koike, Kouki Morimoto, Masanori Yanagisawa, Toshiaki Yoshii
  • Patent number: 7938633
    Abstract: An electric compressor includes an electric motor, a compression mechanism driven by the electric motor, and a housing for accommodating the electric motor and the compression mechanism. The housing is formed such that the stator is fitted thereto. The housing has a plurality of thick portions and a plurality of thin portions. The center of the thickness of each thick portion is located outside of the center of the thickness of each thin portion with respect to a radial direction of the housing. As a result, even if the housing is deformed, the fixation of the stator to the housing is reliably maintained. Further, the weight of the electric compressor is reduced.
    Type: Grant
    Filed: April 14, 2006
    Date of Patent: May 10, 2011
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Masao Iguchi, Kazuya Kimura, Akihiro Kawakami
  • Patent number: 7868504
    Abstract: A resolver rotor for a variable reluctance resolver includes a plurality of axially stacked rotor pieces. The rotor pieces are jointly fitted into one body. In the fitting of the rotor pieces, deformed portions are provided between a center of the radial thickness of the resolver rotor and a side surface thereof which is opposite to a stator-side surface thereof. The number of deformed portions is the same as that of projecting poles of the resolver rotor. The deformed portions are arranged at circumferential positions of peaks of the respective projecting poles. At those positions, concave portions are provided on the side surface to receive deformations caused by fitting the rotor pieces together. Thus, the stator-side surface of the resolver rotor is less affected by fitting of the rotor pieces together, preventing a reduction in the detection accuracy of the resolver.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: January 11, 2011
    Assignee: Nidec Corporation
    Inventors: Nakaba Kataoka, Keita Nakanishi
  • Publication number: 20100277030
    Abstract: A stator core for a generator includes a multiple of core laminations along an axis, each of the multiple of core laminations define at least one leg which extends in a radial direction from the axis.
    Type: Application
    Filed: April 30, 2009
    Publication date: November 4, 2010
    Inventors: Edward C. Allen, Andrew P. Grosskopf, Brady A. Manogue, Eric A. Brust
  • Publication number: 20100187944
    Abstract: The invention relates to an electrical machine (8), in particular an electric motor, suitable for the adjustment by external force of elements of a motor vehicle, essentially for driving a steering booster. The inventive electrical machine comprises a rotor (7) and a shaft (10), the rotor having a plurality of plates (5), wherein the plates (5) are premounted on the shaft either individually or as a plate assembly (6) or by means of a plurality of plate assemblies (6), the rotor (7) being connected to the shaft (10). The plates (5) have resilient lugs (3) for fixing the plates (5) and/or plate assemblies (6) to the shaft (10). Furthermore, the plates (5) of the plate assemblies (6) comprise centering lugs (1) which serve to radially center the plate assembly (6) relative to the shaft (10).
    Type: Application
    Filed: January 24, 2008
    Publication date: July 29, 2010
    Applicant: Robert Bosch GMBH
    Inventors: Stefan Ossenkopp, Joachim Becker, Holger Klatte, Erik Maurer, Ngoc-Thach Nguyen, Stefan Stoermer, Bruno Holzwarth, Tilo Koenig
  • Patent number: 7732969
    Abstract: A brushless motor according to the present invention is provided with: a tubular stator case; a stator core; and a rotor. The stator core includes a tubular yoke portion and a plurality of split cores. A plurality of dovetail grooves are formed in an inner peripheral surface of the yoke portion; each split core has a coil bobbin which has a mounting hole so as to penetrate in a radial direction, and a split teeth which is mounted into the mounting hole of the coil bobbin. The coil bobbin has a winding portion, and flange portions, and a clearance portion into which a winding starting end of the coil is strayed from the winding portion is formed on the inside of the one of the flange portions by reducing the thickness of the flange portion such that.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: June 8, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Masaki Ishizeki, Tohru Yumoto, Hisashi Ishida, Susumu Miyazaki, Kazushi Hamaya
  • 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: 7687966
    Abstract: A stator assembly detachably mounted with a fan housing. The stator assembly includes a stator including one or more first mounting feet and one or more second mounting feet disposed apart from each other. Additionally, the stator assembly includes a printed circuit board (PCB) having one or more first openings and a fan housing having a base member fixed to a bearing liner. The base member includes one or more second openings disposed about the bearing liner. The stator is coupled to the PCB into a stator-PCB assembly with each of the one or more first mounting feet being locked with one of the one or more first openings. The stator-PCB assembly is center-aligned with respect to the bearing liner and coupled to the fan housing with each of the one or more second mounting feet locked with one of the one or more second openings.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: March 30, 2010
    Assignee: Minebea Co., Ltd.
    Inventors: Eiko Takahashi, Jonn Herzberger