Molded Plastic Patents (Class 310/43)
  • Patent number: 11664696
    Abstract: The present disclosure relates to a stator assembly of a hairpin winding motor. The stator assembly includes a stator core and hairpin coils. The hairpin coils include a first end including a pair of respective ends of first two hairpin coils arranged adjacent to each other in a radial direction, a second end including a pair of respective ends of second two hairpin coils arranged adjacent to each other outside the first end in the radial direction, and a third end including a pair of respective ends of third two hairpin coils arranged adjacent to each other outside the second end in the radial direction. Here, such first to third ends are repetitively arranged in plural along a circumferential direction, and a fixing cap fixes a preset number of ends among the plurality of first to third ends repetitively formed along the circumferential direction.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: May 30, 2023
    Assignee: HYUNDAI MOBIS Co., Ltd.
    Inventor: Seong Jun Hwang
  • Patent number: 11654544
    Abstract: Inserts disposed in a housing of a pneumatically or hydraulically powered tool having a motor adapted to rotate a drive lug in either of first and second rotational directions. The insert is composed of a material resistive to creep and/or stress relaxation. The insert contacts fasteners applying a clamping force to the tool and remove the housing from the load path of the clamping force, thereby reducing the possibility of fluid leaks.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: May 23, 2023
    Assignee: Snap-on Incorporated
    Inventors: Richard Bothmann, Brian C. King, Ray Kinsley
  • Patent number: 11658529
    Abstract: A permanent magnet rotor (100) for an electric motor comprises a bell housing (110) comprising an annular wall (112) and at least one permanent magnet (120) fixed to the annular wall by adhesive means (126) sited between a rear face (124) and the annular wall (112). The rear face (124) of the permanent magnet (120) has a receiving zone (134) accepting said adhesive means (126) and defined by a radius of curvature (R?, R2) which is greater than the radius of curvature (R) of the annular wall (112).
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: May 23, 2023
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Cordula Quitsch, Maxime Pagnard, Aziz Bougrassa, Omar Bougrassa, Laurent Labaste-Mauhe, Benjamin Loret, Anthony Brisset
  • Patent number: 11646619
    Abstract: An electronically commutated machine, in particular an electronically commutated electric motor is disclosed. To detect an angle of rotation completed by a rotor shaft of the machine or a rotational speed, this rotor shaft is equipped with a signal generator of a sensor device. This latter component has a magnet element, which is fastened on the rotor shaft by way of a holding element. A clamping body is included, which is arranged on the rotor shaft with force fit and onto which the holding element is pressed.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: May 9, 2023
    Assignee: Robert Bosch GmbH
    Inventors: Michael Loeffler, Michael Schlitzkus, Thomas Zander
  • Patent number: 11641138
    Abstract: A motor for a laundry appliance includes a drive shaft coupled to a drum at a first end. The rotor frame is coupled proximate the second end of the drive shaft, where the rotor frame includes at least one polymeric material. A central hub includes a core and a perimetrical ring that extends circumferentially around the core. A plurality of recesses are defined within a planar surface of the perimetrical ring, wherein a portion of the polymeric material is received within the plurality of recesses to secure the rotor frame to the central hub.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: May 2, 2023
    Assignee: Whirlpool Corporation
    Inventors: Krati Bhargava, James Hull
  • Patent number: 11641147
    Abstract: The present disclosure is related to providing a motor capable of removing electric noise sufficiently. The present disclosure is also related to providing a motor capable of handling cases where no choke coil is disposed. A motor comprising a choke coil, a terminal electrically connected to a lead wire led out from the choke coil, and a bracket including a first wall part, a second wall part and an elastic part located between the first wall part and the second wall part in an axial direction of the choke coil, in which the choke coil is located between the elastic part and the second wall part in the axial direction, the terminal is sandwiched between the first wall part and the elastic part in the axial direction and the lead wire is led out from the elastic part side to the first wall part side.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: May 2, 2023
    Assignee: MINEBEA MITSUMI Inc.
    Inventor: Masami Ota
  • Patent number: 11641141
    Abstract: A stator (10) of an electric machine has a stator lamination stack (16) that includes stator laminations. The stator (10) also has at least one stator winding (15) defined by conductor bars (11-14) arranged in slots (17) of the stator lamination stack (16) and fixed in the slots (17) of the stator lamination stack (16) with the aid of a fixing device (22). The fixing device (22) in a slot (17), a nonwoven material (20) which can be saturated with a cooling liquid (28).
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: May 2, 2023
    Assignee: Dr. Ing. h. c. F. Porsche AG
    Inventors: Johannes Stoll, Rolf Graef
  • Patent number: 11637465
    Abstract: A rotor of a rotating machine includes a rotor core in which a plurality of assembly holes is provided in an axial direction, and a first magnet and a second magnet. The first magnet and the second magnet are assembled to the rotor core by being inserted into the assembly holes in accordance with a predetermined arrangement pattern. An outer peripheral surface of any one of the first magnet and the second magnet, including end faces in the axial direction, being entirely covered with an insulating coating, and an outer peripheral surface of the other of the first magnet and the second magnet, excluding at least a part of end faces in the axial direction, being covered with an insulating coating.
    Type: Grant
    Filed: June 18, 2021
    Date of Patent: April 25, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshinori Okochi, Keisuke Ito
  • Patent number: 11629719
    Abstract: An electric coolant pump includes a pump house, a motor connected to the pump house, and an impeller housed in the pump house and driven by the motor. The motor includes a stator and a movable unit rotatably mounted within the stator. The stator is provided with a central shaft. The movable unit includes a support body, a bearing assembly fixedly embedded in the support body, a rotor core fixed to the support body, and a plurality of permanent magnets attached to the rotor core. The bearing assembly includes at least one bearing rotatably sleeved on the central shaft. The support body is formed by an injection-molding process to wrap the bearing assembly and fixed connecting bearing assembly and the rotor core.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: April 18, 2023
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Guoyuan Zou, Hongliang Zhang, Daigang Li, Anbang Chen, Ruifeng Qin, Guanyin Liang
  • Patent number: 11626774
    Abstract: A system and method that converts rotational movement of a crank shaft into electrical energy is provided. The crank shaft is caused to rotate using a series of electromagnets powered by a power source. The electromagnets are arranged to encircle and magnetically affect a central magnet coupled to the shaft. The system effectively amplifies the energy supplied from the power source and saves the resulting excess energy to an energy storage device.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: April 11, 2023
    Inventor: Chad Gray-Cingcade
  • Patent number: 11611255
    Abstract: A rotor having multiple poles is provided and includes at each pole an end winding support forming a channel, a bus bar disposed in the channel and edge-wound coils disposed to extend around the end-winding support and the bus bar. The edge-wound coils are stacked radially and include an inner diameter coil routed to an adjacent pole and brazed to an inner diameter coil of the adjacent pole and an outer diameter coil brazed to the bus bar.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: March 21, 2023
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Dhaval Patel, Andrew R. Wilkinson, Eric A. Brust, Edward C. Allen
  • Patent number: 11594924
    Abstract: A stator core is integrally moulded with an insulator employing an insulating resin material, together with a fixed shaft which is inserted into a centre hole in a core back portion, and the stator core and a motor circuit board are assembled as a single piece by mating a plurality of circuit board insertion pieces protruding on an axial end of the insulator on the opposite side to an output end with circuit board insertion holes.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: February 28, 2023
    Assignee: SHINANO KENSHI KABUSHIKI KAISHA
    Inventors: Shou Tomiyama, Makoto Aida, Mario Fiorucci, Andreas Furrer, Stefan Wildhaber
  • Patent number: 11572884
    Abstract: A direct current (DC) brushless fan and a drive apparatus are provided. The drive apparatus includes a housing, a DC brushless motor, a control unit, an adaptation unit, an alternating current (AC) input interface, a DC input interface, and a power storage. The housing includes a first portion and a second portion. A projection path defined by orthogonally projecting the first portion toward the second portion is defined as an installation range. The DC input interface is arranged in the installation range and is electrically connected to the control unit. The AC input interface is arranged in the installation range and is electrically connected to the adaptation unit. The power storage is detachably arranged at an installation position of the housing. When the power storage is arranged at the installation position, the power storage covers the AC input interface and is electrically connected to the DC input interface.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: February 7, 2023
    Inventor: Chia-Yuan Liu
  • Patent number: 11563358
    Abstract: A rotary actuator for use in a shift-by-wire system of a vehicle includes a motor, a controller for controlling the motor, and a case housing the motor and the controller. An upper case of the case includes a resin molded body, which integrally has a housing that houses the motor and a connector that is used for external connection, and a plurality of external connection terminals, which are embedded in the resin molded body and are capable of connecting the controller to an outside member. Each of the external connection terminals includes a base protruding into an installation space for a control board in a board extending direction, a bend bent from the base toward the control board, and a tip portion extending from the bend to the control board.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: January 24, 2023
    Assignee: DENSO CORPORATION
    Inventors: Mikine Kume, Hiroyuki Kado
  • Patent number: 11557849
    Abstract: The invention relates to a cover for protecting a regulator and a rectifier of a motor vehicle alternator, comprising at least two removable sections that are each compatible with at least two possible configurations for the connector of the regulator, and/or at least two removable sections that are each compatible with at least two possible configurations for the terminal of the rectifier, which cover can be used to protect more than one possible configuration of a motor vehicle alternator and reduces manufacturing time and costs.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: January 17, 2023
    Assignee: VALEO SISTEMAS ELECTRICOS, S.A. DE C.V.
    Inventors: Andrés Montes Gomez, Juan Carlos Loyola Salazar
  • Patent number: 11539276
    Abstract: A molded product in which a parting line can be disposed at an inconspicuous position on the appearance of the product. The molded product includes a main body having a cylindrical shape and a hole penetrating through the main body in a radial direction, or a protrusion protruding in the radial direction from the main body, and in the molded product, a parting line corresponding to a matching surface of molds is formed in the molded product, and the parting line has a first line extending from the hole or the protrusion to one side in a circumferential direction of the main body, and a second line extending from an end point on the one direction of the circumferential direction of the first line to an end portion in an axial direction of the main body.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: December 27, 2022
    Assignee: Fanuc Corporation
    Inventor: Ryuya Yasuda
  • Patent number: 11527932
    Abstract: A method for producing a stator may include providing an annular stator body including a plurality of stator teeth arranged spaced apart from one another. The method may also include at least partially overmoulding at least two adjacent stator teeth with a first plastic mass. The method may further include arranging at least one stator winding on at least one stator tooth of the at least two stator teeth and fixing the at least one stator winding on the at least one stator tooth via at least partially overmoulding the at least one stator winding with a second plastic mass. The method may additionally include, prior to fixing the at least one stator winding, introducing a mask into an intermediate space defined between the at least two stator teeth to cover a surface portion of the stator body bounding the intermediate space radially outside.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: December 13, 2022
    Inventors: John Cunningham, Philip Grabherr, Ian Webb, Tim Male, Stojan Markie, Sentance Graham, Peter Sever, Josef Sonntag, Jon Witcombe
  • Patent number: 11527940
    Abstract: The present invention can provide a motor including a shaft, a rotor disposed outside the shaft, a stator disposed outside the rotor, a sensing magnet coupled to the rotor, a circuit substrate disposed above the sensing magnet and including a sensor configured to detect a magnetic flux change due to the sensing magnet, and a cap member which covers the sensor, wherein the circuit substrate includes a first substrate, a second substrate disposed to be spaced apart from the first substrate, and connecting portions connecting the first substrate to the second substrate, the sensor is mounted on the second substrate, and the cap member is disposed to pass through a separating space between the first substrate and the second substrate.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: December 13, 2022
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Dae Ho Choi, Hong Shik Yun
  • Patent number: 11522406
    Abstract: A vehicle electric machine assembly including a stator core and a terminal block is provided. The stator core includes one or more three-phase terminals connected to end windings. The terminal block includes a connector for each of the three-phase terminals. A portion of the end windings extending from the stator core, the three-phase terminals, and the terminal block are overmolded as a single unit such that a portion of each of the connectors is exposed for connection to an inverter. The terminal block may further include one or more threaded apertures, each sized to receive a threaded stud to facilitate an electrical connection between one of the one or more three-phase terminals and the inverter. Each of the one or more three-phase terminals may extend axially along an axis substantially parallel to a central axis of a rotor disposed within a cavity defined by the stator core.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: December 6, 2022
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Michael W. Degner, Prasad Dev Hanumalagutti, Franco Leonardi
  • Patent number: 11522410
    Abstract: In this molded structure of the brushless fan motor, at least a part of a circuit board is supported by a notch portion in a distal end portion of a projecting end formed on a board storage portion side and a rotary shaft side of an insulator, the board storage portion and the insulator are placed in such a manner as to surround a periphery of a bearing support tube portion, a part of a molded portion is disposed between the bearing support tube portion and the insulator and between the board storage portion and the insulator, and the entire circuit board located inside a storage chamber, excluding the portion supported by the projecting end formed on the board storage portion side of the insulator, is covered with the part of the molded portion.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: December 6, 2022
    Assignee: SANYO DENKI CO., LTD.
    Inventors: Munenori Takakuwa, Kakuhiko Hata, Yukihiro Nagatsuka
  • Patent number: 11522419
    Abstract: A method for manufacturing a stator for an electric machine, having the following steps: inserting a cast body with a nozzle from a first side of the stator into the stator, inserting a cast counterbody from a second opposing side of the stator into the stator, casting the stator with thermoplastic, thermosetting plastic, or resin by means of the nozzle, curing the thermoplastic, thermosetting plastic, or resin, wherein following the curing a cast-on piece of the thermoplastic, thermosetting plastic, or resin is sheared off using a rotational movement of the cast body or cast counterbody.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: December 6, 2022
    Assignee: VALEO SIEMENS EAUTOMOTIVE GERMANY GMBH
    Inventor: Florian Balling
  • Patent number: 11502588
    Abstract: A method for manufacturing a polymeric electrical machine includes manufacturing a stator including a laminated stator core and a plurality of windings including winding overhangs; applying a surface treatment to the stator core constructed to reduce defects at an interface between a polymeric material and the stator core and enhance adherence between the polymeric material and the stator core; mounting the stator onto a mandrel; inserting the stator into an electrical machine housing mold; molding an electrical machine housing including a stator band with an integral non-drive end endplate, including overmolding the stator and winding overhangs within the stator band; molding a drive end endplate, including forming polymeric ribs in the drive end endplate and overmolding a metallic structure into the endplate, the metallic structure enhancing mechanical stiffness of the endplate; installing a rotor assembly into the electrical machine housing; and installing the endplate onto the electrical machine housing.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: November 15, 2022
    Assignee: ABB Schweiz AG
    Inventors: Sheng Zhong, Dariusz Bednarowski, Colin E. Tschida, Darren Tremelling, Lukasz Malinowski
  • Patent number: 11499548
    Abstract: Gerotor pump comprising an inner gerotor and an outer gerotor and an electric motor in a pump housing, and the outer gerotor is formed integrally with the rotor of the electric motor, wherein magnets are integrated into the outer gerotor, and the rotor is rotatably mounted on a shaft that is fixed on one side to a housing or a housing base of the pump housing.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: November 15, 2022
    Assignee: HANON SYSTEMS EFP DEUTSCHLAND GMBH
    Inventors: Jan Hinrichs, Tilo Schäfer, Bernd Denfeld
  • Patent number: 11496027
    Abstract: A motor case has a first case portion and a second case portion coupled to the first case portion. The stator has a stator core and an insulator fixed to the stator core. The insulator has a tubular portion having an outer circumferential surface and a polygonal shape in the cross-sectional view, and on the outer circumferential surface, insulator flat portions lined up in a circumferential direction. The first case portion includes: three or more core supports which project inward in the radial direction from an inner circumferential surface of a circumferential wall of the first case portion, come into contact with the core outer-circumferential surface, and are disposed at intervals from each other in the circumferential direction; and at least one first detent which is in contact with or is disposed to come into contact with the insulator flat portion.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: November 8, 2022
    Assignee: NIDEC SERVO CORPORATION
    Inventors: Toru Kobayashi, Yoshifumi Kuwano
  • Patent number: 11484978
    Abstract: A machine tool having a tool holder for exchangeably holding a tool is provided, the machine tool including: a machine tool housing; a spindle rotatably mounted in the machine tool housing a drive end being connected to a drive for rotating the spindle about an axis of rotation and a holding end being coupled to the tool holder; and a locking device arranged in the machine tool housing and which has a locking element reversibly movable between a release position and a locking position, a locking end of the locking element having an interlocking connector and the spindle having a mating interlocking connector, the interlocking connector being disengaged from the mating interlocking connector in the release position to enable rotational motion of the spindle, and the interlocking connector being engaged with the mating interlocking connector in the locking position to prevent rotational motion of the spindle and to enable an exchange of the tool of the tool holder, the locking device also including an electrica
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: November 1, 2022
    Assignee: Hilti Aktiengesellschaft
    Inventor: Tobias Möglich
  • Patent number: 11489406
    Abstract: A drive device includes an electric motor and a gear unit that is driven by the electric motor. The electric motor has a laminated stator core which includes stator windings and is accommodated in a stator housing. The stator housing has recesses that are axially uninterrupted, i.e. in particular in the direction of the rotor shaft axis, and the stator housing is surrounded, especially radially surrounded, by a housing of the drive device, in particular a tubular housing and/or a cup-shaped housing, and the housing is set apart from the stator housing, in particular such that an especially circulating airflow is able to be provided within the housing, the recesses in particular guiding the airflow through in the axial direction, and the airflow being returned in the opposite direction in the set-apart region between the stator housing part and the housing.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: November 1, 2022
    Assignee: SEW-EURODRIVE GMBH & CO. KG
    Inventors: Waldemar Becker, Domenik Hettel, Thomas Rung, Jens Schillinger
  • Patent number: 11489422
    Abstract: A method for manufacturing an armature (1) includes: a coil disposing step involving using a thermally expandable resin (Q) that expands by application of heat, and disposing a coil (30) in a core (10) such that the thermally expandable resin (Q) before expansion is disposed between a slot-housed portion (31) and an inner surface of a slot (11); a resin disposing step involving, before or after the coil disposing step, using a thermally melting resin (P) that melts by application of heat, and disposing the thermally melting resin (P) before melting such that the thermally melting resin (P) comes into contact with coil end portions (32); and a heating step involving, after the coil disposing step and the resin disposing step, heating, expanding, and then curing the thermally expandable resin (Q), and heating, melting, and then curing the thermally melting resin (P).
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: November 1, 2022
    Assignee: AISIN CORPORATION
    Inventor: Hideaki Kimura
  • Patent number: 11469633
    Abstract: A motor includes a rotor with one or more magnets, a rotor core holding the one or more magnets, a spacer that contacts the one or more magnets, and a rotor holder. The rotor holder includes a holder lid portion and a holder tubular portion in a tubular shape extending to one side in the axial direction from a radially outer edge of the holder lid portion. The holder lid portion includes a holder first surface that extends radially inward from an inner surface of the holder tubular portion, a holder second surface that extends radially and is radially inward of the holder first surface and on the other side in the axial direction, and a connecting surface connecting the holder first surface and the holder second surface.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: October 11, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Mitsuhiro Takemoto, Sho Fukuhara, Shinji Takemoto
  • Patent number: 11469636
    Abstract: A stator of an electric motor comprises a pole chain, which is made of a stack of a plurality of straight transformer sheets and rounded to a circular configuration by bending the stacked transformer sheets, wherein the pole chain has a plurality of pole portions each comprising a pole tooth; a plurality of winding cores attached to the respective pole teeth for accommodating coils of a three-phase winding comprising wires; wherein the wires of respective phases of the three-phase winding are routed spatially separated from each other and without mutual contact at an axial end surface of the pole chain between and along adjacent winding cores around the pole chain; and wherein the wires are supported and guided such that their positions relative to the pole chain are substantially maintained when the pole chain is rounded from its straight configuration to its circular configuration.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: October 11, 2022
    Assignee: Bleckmann GmbH & Co. KG
    Inventors: Heinz Frederic Hackl, Georg Görg
  • Patent number: 11456648
    Abstract: A rotor-grounded motor including a stator, a rotor and a conductive plate. The stator is disposed with a bearing seat, and the bearing seat accommodates a bearing. The rotor includes a rotating shaft, and the rotating shaft is inserted in the bearing and electrically connected therewith. The conductive plate is disposed on the bearing seat, and one end of the conductive plate is connected to the bearing and the other end is electrically connected to a grounding terminal. The rotating shaft and the grounding terminal are electrically connected.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: September 27, 2022
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Han-En Chien, Hung-Chi Chen, Meng-Yu Chen
  • Patent number: 11454233
    Abstract: A device provides a pneumatic pressure medium via a pressure medium source for at least one pressure medium chamber in particular of a vehicle seat of a motor vehicle. The device has a pressure medium source for the pressure medium and a pressure medium line disposed between the pressure medium source and at least one valve. At least one connection for a pressure medium line is disposed between the valve and the pressure medium chamber. A control module actuates the pressure medium source and the at least one valve. The device further has a housing. A motor of the pressure medium source is located between the control module and a pump of the pressure medium source.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: September 27, 2022
    Assignee: Continental Automotive GmbH
    Inventors: Thomas Schuetze, Klaus Spreng, Stefan Bauer, Jan Sedenka
  • Patent number: 11444509
    Abstract: Devices, systems, and methods to air cool a portable generator are disclosed. The devices include various air ducts to direct airflow over heated components within a cabinet of the portable generator to cool the components by convection. A damping fan draws ambient temperature air into the cabinet and directs the air into channels of an outflow duct.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: September 13, 2022
    Assignee: N.P.S. Company, LLC
    Inventors: Junjie Dai, Jinbao Chen
  • Patent number: 11431229
    Abstract: A device (1) to reduce harmful bearing voltages in an electrical machine (M) fed by a DC link voltage of a DC link. The electrical machine has a rotor (2) and a stator (3) with windings (W), and is insulated to ground. At least two bearings (4), with an outer bearing ring (4a) and an inner bearing ring (4i), are between the rotor (2) and the stator (3). A shielding arrangement (S) is between the windings (W) of the stator (2) and the respective outer bearing rings (4a). A stator electrical connecting arrangement (5) is connected to a potential that is stable with respect to the DC link.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: August 30, 2022
    Assignee: ebm-papst Mulfingen GmbH & Co. KG
    Inventors: Sebastian Schroth, Manuel Walter
  • Patent number: 11424650
    Abstract: A rolling device adapted to roll on a ground surface, including at least one motorized wheel including a circular stator and a circulator rotor. The stator may include a circular slot and a plurality of electromagnetic coils located in the circular slot so that at least two electromagnetic coils are arranged facing one another. The circular motor may include a circular strip having side walls and a free end edge connecting the side walls, as well as a contact surface with the ground, the circular strip including magnetic elements arranged on the side walls thereof. The circular rotor and the circulator stator may be assembled by means of assembly means provided on the circular stator.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: August 23, 2022
    Assignees: Universite Le Havre Normandie
    Inventors: Philippe Cacheux, Georges Barakat
  • Patent number: 11418093
    Abstract: An electric motor includes a front housing positioned on a load side and including an annular groove in an inner surface of the front housing, a winding wound around a stator core and including a coil end projecting forward from the stator core and disposed in the annular groove, and a heat conductive resin filled in the annular groove and configured to be in contact with both the coil end and the front housing.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: August 16, 2022
    Assignee: Fanuc Corporation
    Inventor: Leo Arai
  • Patent number: 11418082
    Abstract: A stator used for a motor and having excellent vibration resistance, waterproofness, and an insulating property. The stator used for a motor includes a stator core having a plurality of teeth arranged at substantially equal intervals on a same circumference, and an insulator covering the teeth, and coil portions are formed by wires being winded around portions of the insulator that covers the plurality of teeth. The insulator includes first wall portions provided on the center axis side with respect to the coil portion, and molded portions formed, by resin, on the center axis side with respect to the first wall portions. Wire extended portions of the wire pulled out from the coil portion straddle the first wall portions. Wire terminal end portions are connected to bus rings. The bus rings are embedded in the molded portions.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: August 16, 2022
    Assignee: TOYO DENSO KABUSHIKI KAISHA
    Inventor: Naoaki Shimizu
  • Patent number: 11394267
    Abstract: The present invention may provide a motor including a housing, a stator disposed in the housing, a rotor disposed in the stator, a shaft coupled to the rotor, and a bus bar disposed on the stator and including a plurality of terminals, wherein the plurality of terminals include a neutral terminal and a plurality of phase terminals, the neutral terminal includes a first body of which a first width in a radial direction is greater than a second width in an axial direction and a plurality of first connectors extending from the first body, and the phase terminal includes a second body of which a first width in the radial direction is less than a second width in the axial direction and a plurality of second connectors extending from the second body.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: July 19, 2022
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Jung Keun Kim
  • Patent number: 11374477
    Abstract: A pulse generator comprises a mounting to hold two bodies in proximity to each other. Two magnetic elements may be movably placed in the mounting, and the magnetic elements will align with each other in one of two stable states. A coil surrounds the magnetic elements in the mounting, and a force application device applies a force to the first magnetic element to cause the first magnetic element to break the current alignment and thereby make the first and second magnetic elements realign to the other stable state. The movement of the magnets generates a pulse in the coil which may be detected by suitable circuitry and used. The device may be used inter alia to count rotations or linear movements, or to provide switching or remote control without the need for a separate power source.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: June 28, 2022
    Assignee: Servosense (SMC) Ltd.
    Inventors: Yves Villaret, Alex Matskin, Nadav Reinberg
  • Patent number: 11374471
    Abstract: A method of manufacturing an core product includes heating the resin pellet at a temperature higher than 25° C. for 24 hours or longer, the resin pellet being formed of a thermosetting resin composition including epoxy resin, a curing agent, accelerator, and a release agent. The method includes holding a core body having a resin formation region, which is a region in which a resin is to be formed by injection of a melted resin, between a pair of holding members, and disposing the heated resin pellet in a resin pot formed in at least one of the pair of holding members. Additionally, the method includes melting the resin pellet in the resin pot and injecting the melted resin into the resin formation region through a resin channel extending from the resin pot in communication with the resin formation region, and curing the melted resin injected into the resin formation region.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: June 28, 2022
    Inventors: Shigeru Saruwatari, Masayuki Ono
  • Patent number: 11374466
    Abstract: The present disclosure provides a motor stator and a motor. The motor stator comprises a core; windings wound on the core; and a three-dimensional fitted winding inner groove embedding structure which is a cage-type structure having ribs and ends, the ribs being embedded in grooves between the windings, and the ends being connected to the ribs and cover ends of stator windings; both of the rib and the end of the inner groove embedding structure comprise nonmagnetic heat-conducting glue layers and a phase-change material layer interposed as an interlayer between the heat-conducting glue layers. According to the present disclosure, the heat of each part of the motor stator can be quickly conducted, so as to rapidly reduce the temperature, quickly eliminate the instantaneous temperature peak, and improve the temperature gradient equilibrium of each part.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: June 28, 2022
    Assignee: BEIJING INSTITUTE OF TECHNOLOGY
    Inventors: Qiang Huang, Wu Zhang, Donglin Qiu, Xuechao Chen, Qiang Chen
  • Patent number: 11362557
    Abstract: An electric motor for reducing eddy current loss including an armature; a field element or permanent magnet as a magnetic source; and a shaft rotating together with the armature or field element. The permanent includes magnet particles bound together by a binder resin, and has a degree of electric resistance anisotropy (?1/?2) of 2 or more. The first electric resistivity (?1) is measured in an axial direction and a second electric resistivity (?2) is measured in a direction perpendicular to the axial direction. The bonded magnet is, for example, a compression-molded bonded magnet that contains 93% to 98.5% of the magnet particles, and the first electric resistivity is 300 ??m or more. When the compression-molded bonded magnet whose compression direction is arranged along the axial direction is used as a field source, the eddy current loss occurring in the compression-molded bonded magnet can be efficiently reduced.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: June 14, 2022
    Assignee: AICHI STEEL CORPORATION
    Inventors: Atsushi Narita, Aki Watarai
  • Patent number: 11353015
    Abstract: Brushed electric motor (10), comprising an outer case (11), two brushes and further a rotor (30) having a first inner end (31) and a second outer end (32) which is inserted within the outer case (11), the brushed electric motor (10) is usable in environments with a risk of fire or explosion or in presence of potentially explosive or flammable fluids, and comprises at least a filler element (20) made with a polymer based material which is positioned internally to the outer case (11) of said brushed electric motor (10) for minimize the free volume within the brushed electric motor (10) itself and for allow at the same time to maintain a high power and high performance characteristics of the brushed electric motor (10), by minimizing the possibility of triggering a burst or fire.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: June 7, 2022
    Assignee: INTERNATIONAL POWER COMPONENTS SRL
    Inventors: Giovanni D'Ambrosio, Roberto Italo Bianchi
  • Patent number: 11322998
    Abstract: A rotor according to an embodiment includes a cylindrical magnet, a holder, and a balance adjusting portion. The cylindrical magnet has a bore portion into which a rotary shaft is inserted, the inner diameter of the bore portion being larger than the outer diameter of the rotary shaft. The holder is made of resin, and has a tubular portion formed in the bore portion of the magnet and a protruding portion protruding from the magnet in the rotation axis direction, the holder being press-fitted onto the rotary shaft. The balance adjusting portion is press-fitted onto the rotary shaft with the protruding portion interposed therebetween.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: May 3, 2022
    Assignee: MINEBEA MITSUMI Inc.
    Inventor: Jun Ohmura
  • Patent number: 11316410
    Abstract: A method for improving thermal conduction in a stator having electrically conductive windings wound in a plurality of gaps formed between adjacent pairs of a plurality of teeth of the stator. A plurality of interstitial spaces are formed within each of the gaps during winding of the electrically conductive windings around the teeth. A plug is arranged within each one of the gaps to close off slot openings. A thermally conductive filler compound is injected into each gap under sufficient pressure to at least substantially fill the interstitial spaces within each gap and to at least substantially encapsulate the electrically conductive windings. The thermally conductive filler compound is then allowed to set.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: April 26, 2022
    Assignee: American Axle & Manufacturing, Inc.
    Inventor: Jeffrey J. Ronning
  • Patent number: 11296575
    Abstract: An electric machine having a field coil and a rotatable armature coil. A rotatable commutator is conductively coupled with the armature coil and has a plurality of contacts. A plurality of brushes are conductively engageable with the plurality of contacts wherein rotation of commutator about the rotational axis causes the plurality of contacts to sequentially engage the plurality of brushes as the plurality of contacts rotate about the rotational axis. The plurality of brushes includes at least one positive brush and at least one negative brush, the at least one positive brush being a multi-layer brush and the negative brush being a single layer block brush. The multi-layer brush may include a high-copper layer and a low-copper layer with the low-copper layer forming the trailing edge of the brush. The single layer brush may have a copper content greater than the high-copper layer of the multi-layer brush.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: April 5, 2022
    Assignee: BorgWarner Inc.
    Inventor: Michael E. Kirk
  • Patent number: 11296577
    Abstract: An electric drive motor includes a stator with pole shoes and at least one electrically controllable stator winding. A permanent magnet rotor is rotatably mounted in the field of the stator winding leaving an annular gap. The rotor includes a motor shaft and a laminated core on the shaft. The core includes at least a number of permanent magnets corresponding to the number of poles of the rotor. The magnets in the core are coated with a plastic envelope having at least one side wall covering the core on at least one axial front side. The side wall includes at least one recess freeing areas of the axial front side covered by the side wall, as access openings for boring the core to balance the rotor. A household appliance has the electric drive motor and an injection mold is used for producing the electric drive motor coated with the envelope.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: April 5, 2022
    Assignee: BSH Hausgeraete GmbH
    Inventors: Robert Blaz, Viliam Farkas, Michal Kalavsky
  • Patent number: 11289963
    Abstract: A rotor includes a shaft, a rotor core, at least one magnet, and at least one fixing portion. The shaft extends in an axial direction. The rotor core includes laminations, and at least one caulking portion. The laminations are stacked in the axial direction. The at least one caulking portion is located at a radial-directional inner side of the at least one magnet to caulk the laminations to each other. The at least one magnet is embedded in the rotor core. The at least one fixing portion fixes at least portions of outer peripheral edges of the laminations to each other.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: March 29, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Shuji Iwasaki, Takahiro Uetani, Masaaki Ogawa
  • Patent number: 11264862
    Abstract: The present invention relates to a terminal device for a drive motor of a vehicle. The terminal device includes: a core bobbin assembly having a core mounted in a circumferential direction, the core having a coil wound therearound; a support ring for supporting an outer part of the core bobbin assembly; and a terminal assembly for being fitted with the support ring. The terminal for constituting the terminal assembly is provided with a resin injection hole formed vertically along an inner circumference thereof, and the resin injection hole are injected with a synthetic resin for holding the terminal assembly and the core bobbin assembly together.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: March 1, 2022
    Assignee: Hyundai Mobis Co., Ltd.
    Inventors: Yeong Woo Seo, Jong Bin Park
  • Patent number: 11258341
    Abstract: A method of manufacturing a rotational electric machine rotor includes: forming a rotor shaft having a non-circular sectional outer shape; forming a rotor core by stacking a predetermined number of magnetic body thin plates each including a center hole having a non-circular shape corresponding to the non-circular sectional outer shape of the rotor shaft; and forming a protruding part for fixing the rotor core and the rotor shaft to each other by inserting the rotor shaft into the non-circular center hole of the rotor core and squashing the rotor shaft extending out of an axial-direction end face of the rotor core by using a predetermined swaging jig to expand the rotor shaft outward beyond an outer periphery of the non-circular section along the axial-direction end face of the rotor core.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: February 22, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi Kinpara, Takashi Takahashi, Tomohiro Segawa
  • Patent number: 11233430
    Abstract: A rotor of a synchronous motor is provided with a plurality of magnets fixed to an outer circumferential surface of a rotor core, and a reinforcement member having a cylindrical shape. An interposition member is disposed between the magnet and the reinforcement member. The magnet includes an outer circumferential surface whose center portion in the circumferential direction bulges outward. The interposition member is formed so as to cover the entire outer circumferential surface of the magnet. An outer circumferential surface of the interposition member has a circular shape when cutting along a plane perpendicular to a rotation axis, and is in close contact with an inner circumferential surface of the reinforcement member.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: January 25, 2022
    Assignee: Fanuc Corporation
    Inventors: Katsuhiro Saigusa, Takafumi Kajiya, Kenji Kawai