Patents Assigned to Nidec Motor Corporation
  • Patent number: 10742089
    Abstract: A motor assembly broadly includes an electric motor and a clamp. The electric motor includes a motor housing and a shaft rotatably supported relative to the motor housing to rotate about a shaft axis, with part of the shaft being exposed relative to the motor housing. The motor housing includes a mounting base. The clamp is connected between the exposed part of the shaft and the mounting base. The clamp is selectively adjustable to apply a variable off-axis load to the exposed part of the shaft.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: August 11, 2020
    Assignee: Nidec Motor Corporation
    Inventor: Ronald W. Schmidt
  • Patent number: 10742084
    Abstract: A motor includes a stator and a rotor. The rotor is rotatable about an axis. The rotor includes a core including a plurality of pole segments arranged arcuately about the axis. The rotor further includes a plurality of arcuately arranged magnets alternating arcuately with the pole segments, such that each of the magnets is at least in part interposed between a pair of adjacent pole segments. The plurality of pole segments includes a plurality of first-polarity pole segments having a first polarity and a plurality of second-polarity pole segments having a second polarity that is different than the first polarity. The rotor further includes a connecting element connecting at least some of the first-polarity pole segments to one another without connecting the second-polarity pole segments to the first-polarity pole segments.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: August 11, 2020
    Assignee: Nidec Motor Corporation
    Inventor: Keith I. Hoemann
  • Patent number: 10715010
    Abstract: An electric motor including a rotor, a stator, a motor housing having a controller can, and a controller having an electronic component disposed within the controller can. The controller can includes an insert comprising thermally conductive metal for exchanging heat with an external heat sink space.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: July 14, 2020
    Assignee: Nidec Motor Corporation
    Inventors: Steven R. Palmer, Chetan O. Modi, Jeffrey S. Sherman, Douglas D. Glenn, Richard Eason
  • Publication number: 20200220419
    Abstract: A motor assembly includes a stator, a rotor rotatable about an axis, and a housing at least in part defining a motor chamber. The stator and the rotor at least in part are received within the motor chamber. The housing includes a first housing portion and a second housing portion. The housing portions engage one another along an interface. The interface restricts ingress of contaminants therethrough into the motor chamber. The housing portions cooperatively define a nested portion that at least in part defines the interface. The nested portion includes an arcuately extending projection and an arcuately extending receiver. The receiver defines an arcuately extending receiving channel. The projection is at least in part received within the receiving channel.
    Type: Application
    Filed: March 23, 2020
    Publication date: July 9, 2020
    Applicant: Nidec Motor Corporation
    Inventors: Marc J. Corcoran, Mark Emanuel, Ryan M. Bastien
  • Patent number: 10707719
    Abstract: A motor assembly includes a motor, a controller for controlling at least one aspect of operation of the motor, a housing, and an insulation system. The housing defines a motor chamber at least substantially receiving the motor and a controller chamber at least substantially receiving the controller. The housing includes a generally annular sidewall at least in part defining the controller chamber. The sidewall includes an electrically conductive portion adjacent the controller, such that a generally radially extending potentially electrical pathway is defined between the controller and the electrically conductive portion. The insulation system extends along the electrically conductive portion, in electrically insulative engagement therewith, to at least in part obstruct the pathway.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: July 7, 2020
    Assignee: Nidec Motor Corporation
    Inventors: Chetan O. Modi, Douglas D. Glenn, Jeffrey S. Sherman, James L. Skinner
  • Patent number: 10707720
    Abstract: An induction motor assembly includes a motor. The motor includes a rotor rotatable about a rotor axis, and a stator at least substantially circumscribing the rotor. The stator includes a generally toroidal core. The core includes a generally circumferential yoke and a plurality of arcuately spaced apart teeth extending radially inwardly from the yoke. The tooth length is at least three (3) times the yoke thickness.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: July 7, 2020
    Assignee: Nidec Motor Corporation
    Inventors: Marc J. Corcoran, Mark Emanuel, Ryan M. Bastien
  • Patent number: 10700570
    Abstract: An electric fan includes a plurality of blades and an electric motor for rotating the blades. The electric motor includes a stator and a rotor rotatable relative to the stator about an axis. The rotor includes a backing ring and a diecast rotor can. The can includes a non-machined sidewall that is diecast integrally as part of the rotor can. The sidewall extends about the axis. The rotor can is diecast in an overlying relationship with at least part of the backing ring, with the sidewall and backing ring being securely interengaged so as to restrict relative shifting therebetween.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: June 30, 2020
    Assignee: Nidec Motor Corporation
    Inventors: Matthew D. Allen, Michael W. Major
  • Publication number: 20200195081
    Abstract: A slinger for an electric motor broadly includes a hub and a wheel. The motor includes a housing in which a stator and rotor are at least partly housed. The motor also includes a rotatable output shaft projecting upwardly through a shaft opening in the housing. The hub is fixedly attachable to the output shaft of the motor so that the slinger rotates with the output shaft. The wheel is configured to divert liquid radially away from the shaft opening. The wheel includes a wheel plate and a plurality of radially extending blades cooperatively forming a series of passages extending radially outward relative to the shaft opening, when the hub is attached to the output shaft. The wheel plate is supported by the hub so as to be positioned above the housing when the hub is attached to the output shaft. The blades present radially inboard ends intersecting the hub.
    Type: Application
    Filed: December 14, 2018
    Publication date: June 18, 2020
    Applicant: Nidec Motor Corporation
    Inventors: Richard L. Eason, Chetan O. Modi, Kevin L. West
  • Patent number: 10686389
    Abstract: A system in which the operation of an electric motor is controlled by electronically controlled switches. The system includes the motor having a run winding and a start winding, a heating component, and a motor control subsystem. A control unit closes a first switch to energize the run winding, closes a second switch to energize the start winding, determines based on an amplitude and a lag time of a current flowing through the motor whether the motor has started and is running normally, and if so, opens the second switch to de-energize the start winding and closes a third switch to activate the heating component. The control unit determines whether the motor has started and is running normally by comparing the real time amplitude and lag time of the current to a plurality of stored amplitudes and lag times associated with different operating conditions.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: June 16, 2020
    Assignee: Nidec Motor Corporation
    Inventors: Gregory A. Peterson, David E. Lass
  • Patent number: 10680500
    Abstract: A system and method for wirelessly communicating with an HVAC motor or other motor in order to manage the motor with regard to, e.g., identifying a suitable replacement for, programming, monitoring and/or diagnosing, and/or tuning or otherwise reprogramming the motor without physically connecting to the motor. A technician uses a software application on a smartphone, tablet, or other portable device to communicate with the motor controller via a wireless communication device incorporated into the motor assembly. The smartphone may receive relevant information, such as identification, programming, or diagnostic information, and process the information or wirelessly transmit the information to a server for processing. Based on the information, the smartphone may transmit programming instructions to the motor controller via the wireless communication device. Further, the wireless communication device may transmit sensor data associated with the motor to allow for monitoring the motor's performance.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: June 9, 2020
    Assignee: Nidec Motor Corporation
    Inventors: Prakash B. Shahi, Christopher D. Schock, Randy L. Bomkamp, Anandan C. Velayutham
  • Patent number: 10680483
    Abstract: A motor assembly includes a stator, a rotor rotatable about an axis, and a housing at least in part defining a motor chamber. The stator and the rotor at least in part are received within the motor chamber. The housing includes a first housing portion and a second housing portion. The housing portions engage one another along an interface. The interface restricts ingress of contaminants therethrough into the motor chamber. The housing portions cooperatively define a nested portion that at least in part defines the interface. The nested portion includes an arcuately extending projection and an arcuately extending receiver. The receiver defines an arcuately extending receiving channel. The projection is at least in part received within the receiving channel.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: June 9, 2020
    Assignee: Nidec Motor Corporation
    Inventors: Marc J. Corcoran, Mark Emanuel, Ryan M. Bastien
  • Publication number: 20200161928
    Abstract: Electric motors are disclosed. The motors are preferably for use in an automated vehicle, although any one or more of a variety of motor uses are suitable. The motors include lift, turntable, and locomotion motors.
    Type: Application
    Filed: January 27, 2020
    Publication date: May 21, 2020
    Applicant: Nidec Motor Corporation
    Inventors: Joshua M. Biro, William D. Moore
  • Publication number: 20200153313
    Abstract: A motor includes a shaft presenting a shaft lead end, a switch assembly including a switch arm shiftable between a first position and a second position, and shield structure. The shaft lead end and the switch assembly are disposed axially outward of an endhsield. The shield structure is disposed axially outward of the switch arm to at least substantially restrict direct tool access to the switch arm from an axially outward position relative to the switch arm. The shield structure at least in part defines first and second tool access channels each extending radially inwardly to the shaft lead end, such that the shield structure enables direct tool access to the shaft lead end via the tool access channels but prevents or at least substantially restricts direct tool access to the switch arm via the tool access channels.
    Type: Application
    Filed: January 20, 2020
    Publication date: May 14, 2020
    Applicant: Nidec Motor Corporation
    Inventors: John G. Schrader, Steven R. Palmer, Jeffrey Scott Sherman
  • Publication number: 20200153370
    Abstract: A system and computer-implemented method for reducing an angle error in an estimated position of a rotor over various loads on an electric motor or type of electric motor. Electrical parameters of an electric motor are measured, a true rotor position is found, and sensorless gains based on the measured parameters are generated, including determining a sensorless angle. Data is gathered at multiple torque levels for at least one speed of the motor, including for each torque level, trying different inductance values, and determining an inductance value that results in an angle error of zero. The angle error is the difference between the true rotor position and the sensorless angle. The inductance value that results in an angle error of zero for each speed may be saved in an electronic memory and used to better control the motor or other motors of the same type.
    Type: Application
    Filed: January 15, 2020
    Publication date: May 14, 2020
    Applicant: Nidec Motor Corporation
    Inventors: Bret S. Clark, Christopher D. Schock, Michael I. Henderson
  • Patent number: 10648539
    Abstract: Electric motors are disclosed. The motors are preferably for use in an automated vehicle, although any one or more of a variety of motor uses are suitable. The motors include lift, turntable, and locomotion motors.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: May 12, 2020
    Assignee: Nidec Motor Corporation
    Inventors: William D. Moore, Philip S. Johnson, Joshua M. Biro, Paul G. Michaels, Payman Rassoolkhani
  • Patent number: 10644639
    Abstract: A system for detecting a decrease in or loss of an input phase to a motor. A power rectifier rectifies and combines three input voltages to produce an output voltage to power the motor. A PFC circuit manages the power flowing to the motor. A sensing circuit located between the power rectifier and the PFC senses a voltage level of the power rectifier's output voltage. Alternatively, a sensing rectifier is connected before the power rectifier, and the sensing circuit senses the voltage level of the sensing rectifier's output voltage. A microprocessor compares the sensed voltage level to a threshold voltage level which is indicative of the decrease in or loss of one of the three input voltages, and if the former drops below the latter, then the microprocessor sends a signal to either shut off the motor or cause the PFC circuit to reduce the power flowing to the motor.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: May 5, 2020
    Assignee: Nidec Motor Corporation
    Inventors: James L. Skinner, Prakash B. Shahi
  • Patent number: 10641624
    Abstract: An encoder includes a housing including a first set of one or more sidewalls defining a first zone, a second set of one or more sidewalls defining a second zone, and a protection partition having a first surface oriented toward the first zone and a second surface oriented toward the second zone. The protection partition has a sensor opening defined therethrough between the first zone and the second zone. A board stack assembly having a plurality of elevations is positioned such that an interface device and a first portion of a protective wire feedthrough are in the first zone and a second portion of the protective wire feedthrough extends through the sensor opening between the first zone and the second zone. The protective wire feedthrough is coupleable to a sensor device in the second zone. A cover engages the first set of one or more sidewalls to seal the first zone from an ambient environment.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: May 5, 2020
    Assignee: Nidec Motor Corporation
    Inventors: Leslie Wolff, Glenn Siracki, Owen Patton
  • Patent number: 10644551
    Abstract: A rotor is provided for use in an electric motor. The rotor includes a shaft assembly rotatable about an axis. The rotor also includes a plurality of magnets arranged arcuately about the shaft assembly, and a plurality of pole segments arranged arcuately about the shaft assembly. The pole segments alternate with the magnets, such that each of the magnets is at least in part interposed between adjacent pole segments. The pole segments interlock with the coupling element.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: May 5, 2020
    Assignee: Nidec Motor Corporation
    Inventors: Keith I. Hoemann, Michael W. Major, Philip S. Johnson, William R. Lewis, Kent A. Sheeran
  • Publication number: 20200116202
    Abstract: A motor includes a rotor rotatable about an axis, a housing defining a motor chamber receiving at least a portion of the rotor, and a bearing assembly rotatably supporting the rotor on the housing. The housing includes a pair of axially spaced apart endshields. The bearing assembly includes a bearing and lubricant collection structure associated with the bearing. The lubricant collection structure defines a collection chamber configured to collect lubricant from the motor chamber and direct the lubricant to the bearing.
    Type: Application
    Filed: December 13, 2019
    Publication date: April 16, 2020
    Applicant: Nidec Motor Corporation
    Inventors: Thomas E. Kirkley, JR., Lawrence J. Wittman, Andrew F. Poag
  • Publication number: 20200106327
    Abstract: An electric motor includes a housing shell, an electrical component, and a baffle for directing airflow to the electrical component. The baffle includes a baffle connection element. The shell includes a shell connection element. Interengagement of the connection elements at least substantially restricts axial shifting of the baffle.
    Type: Application
    Filed: September 28, 2018
    Publication date: April 2, 2020
    Applicant: Nidec Motor Corporation
    Inventors: René Cruz Iglesias, Mark S. Amalfitano, Eric De La Garza, John H. Hussey, Jeffrey S. Sherman, Fidel Flores Mercado