Patents Assigned to JTEKT
  • Machine tool
    Patent number: 11311953
    Abstract: A machine tool that generates internal teeth or external teeth on a cylindrical workpiece includes a workpiece holder, a column which is relatively movable to the workpiece holder, a rotary main spindle which is rotatable with respect to the column, a working tool which is held by the rotary main spindle, and a phase detecting unit which detects a phase of the working tool with respect to the rotary main spindle. The working tool includes a cutter portion which has cutters, a holder portion, and a detected portion which is formed on the holder portion. The phase detecting unit includes a detecting section which detects the detected portion, and a calculating section which calculates a phase angle of the detected portion with respect to a reference position of the rotary main spindle, based on a result detected by the detecting section.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: April 26, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Seiichi Ohno, Minoru Sato, Takuya Nakayama, Tetsuro Furuhata
  • Vehicle drive device
    Patent number: 11313421
    Abstract: A vehicle drive device includes: an electric motor; a multi-plate clutch including a plurality of clutch plates; a pressing mechanism configured to press the multi-plate clutch; an output rotary member to which a drive force of the electric motor is transferred through the multi-plate clutch; and a control device configured to control the electric motor and the pressing mechanism. The control device is configured to control the pressing mechanism using information on the result of test operation performed while the vehicle is stationary.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: April 26, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Wataru Hirata, Tetsuya Yamazaki
  • Substrate connecting structure
    Patent number: 11309643
    Abstract: A substrate connecting structure includes a first substrate, a second substrate facing the first substrate, and a terminal through which electricity is supplied to the first substrate and the second substrate. The terminal has a first substrate connecting part that is connected to the first substrate from a side opposite from the second substrate, and a second substrate connecting part that is provided by splitting from the first substrate connecting part at an intermediate point in the terminal and connected to the second substrate by extending contactlessly through the first substrate from the side opposite from the second substrate toward the second substrate.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: April 19, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Masato Oda, Yuto Sato
  • VANE PUMP
    Publication number: 20220112807
    Abstract: A vane pump includes a cam ring, a rotor, a plurality of vane, and a lateral plate. The lateral plate has an extension groove. The shape of a pump chamber forming surface viewed from the rotation-axis direction of the rotor satisfies the following requirements i) and ii) at the time when a first vane passes the base end part of the extension groove: i) the center line of the groove width of the extension groove is inclined from the radial direction of the rotor; and ii) a slit in which a second vane is accommodated has an open end falling within a belt-shaped range obtained by extending a groove width of the base end part of the extension groove along a virtual extension line.
    Type: Application
    Filed: October 1, 2021
    Publication date: April 14, 2022
    Applicant: JTEKT CORPORATION
    Inventor: Yuji TAKAHASHI
  • Data processing device of production equipment
    Patent number: 11300949
    Abstract: To provide a data processing device of production equipment that can generate data usable by an operator or an administrator by performing processing for a collected plurality of types of data. A data processing device includes a reference-data acquiring unit configured to acquire, in production equipment, reference data including information concerning time in which a reference for grouping of data operates, a target-data acquiring unit configured to acquire target data concerning a state of the production equipment detected by detectors provided in the production equipment, and a combined-data generating unit configured to generate, for each group of the reference data, combined data for each group obtained by combining, with the reference data, data detected in the same period of time as an operation period of time of the reference data in the target data.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: April 12, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Tomohisa Kato, Akio Uchino, Toshihiko Yotsui, Yuki Ishigure, Asami Hara, Tatiana Kundozerova, Tatsuo Oshiumi
  • Sensor device
    Patent number: 11300464
    Abstract: A sensor device includes a partial assembly, a circuit board, and a sensor housing. The partial assembly is constituted by selectively mounting a part that is at least one of a magnetism collection member and a driven wheel to a holder. The circuit board is provided with a detector configured to detect at least one of magnetic flux induced by the magnetism collection member and a rotational angle of the driven wheel in accordance with the part mounted to the holder. The sensor housing is penetrated by the shaft, and houses the partial assembly and the circuit board.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: April 12, 2022
    Assignee: JTEKT CORPORATION
    Inventor: Yuichi Toyama
  • Method for determining the track rod force modeling the torsional elastic release of the tyre in order to manage transitions between park and drive
    Patent number: 11299198
    Abstract: A method estimates a track rod force which is exerted, in a power steering system with which a vehicle is equipped, on a track rod belonging to a steering mechanism which connects an actuator to a steered wheel which is orientable in the yaw direction and which bears a tyre of which the tread is in contact with the ground, the value of the estimated track rod force being corrected as a function of the longitudinal speed of the vehicle by a force component that models the release of the elastic torsion of the tyre so as to reduce, the estimated track rod force according to the longitudinal speed of the vehicle, when the vehicle transitions from a park situation in which the longitudinal speed of the vehicle is zero to a drive situation in which the longitudinal speed of the vehicle is non-zero.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: April 12, 2022
    Assignee: JTEKT EUROPE
    Inventors: Sébastien Bourdrez, Pierre Dupraz, Serge Gaudin, Pascal Moulaire, Kazusa Yamamoto
  • Steering system
    Patent number: 11299197
    Abstract: A steering system includes an electric motor, a detector, and a controller of a vehicle. The controller is configured to control the electric motor by switching an autonomous steering mode, a manual steering mode, and a cooperative steering mode. The controller is configured to control the electric motor in the cooperative steering mode unconditionally or when a predetermined condition is satisfied in a case where a situation to switch a steering mode to the manual steering mode during control in the autonomous steering mode is predicted and a manual steering request is transmitted at a time point that is prior, by a first predetermined time, to occurrence of the situation, or is transmitted when the vehicle arrives at a point that is located a first predetermined distance before a point where the situation is to occur.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: April 12, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Naoki Shoji, Robert Fuchs, Mitsuko Yoshida
  • BALL SCREW DEVICE
    Publication number: 20220107010
    Abstract: A ball screw device includes a threaded shaft, a nut, and balls. The nut body includes a central tubular portion and an end tubular portion. The central tubular portion has a through-hole and an end surface. The nut further includes a circulation member and a snap ring. The circulation member is provided on an inner peripheral side of the end tubular portion such that the circulation member is in contact with the end surface. The snap ring is fitted to a circumferential groove provided on an inner periphery of the end tubular portion. The snap ring is configured to fix the circulation member in a manner such that the circulation member is sandwiched between the snap ring and the end surface.
    Type: Application
    Filed: October 1, 2021
    Publication date: April 7, 2022
    Applicant: JTEKT CORPORATION
    Inventors: Akiyoshi TASHIRO, Ikuo YAMAMOTO
  • Vehicle drive device
    Patent number: 11293524
    Abstract: A vehicle drive device includes: an input shaft that receives a driving force of a driving source and that is provided with a first gear; an intermediate shaft that is provided with a second gear meshing with the first gear and a third gear located next to the second gear in a direction of a rotation axis and that is disposed in such a manner that the intermediate shaft is allowed to move in the direction of the rotation axis; an output shaft that is provided with a fourth gear meshing with the third gear; a first gear pair including the first and second gears; and a second gear pair including the third and fourth gears. One of the first gear pair and the second gear pair includes a helical gear, and the other of the first gear pair and the second gear pair includes a double helical gear.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: April 5, 2022
    Assignee: JTEKT CORPORATION
    Inventor: Yoshinori Suzuki
  • STEERING CONTROL DEVICE AND STEERING SYSTEM
    Publication number: 20220097757
    Abstract: A steering control device includes a target torque generator configured to generate a target torque which is a target value of the motor torque and a control signal generator configured to generate a control signal for controlling the motor such that the motor torque corresponding to the target torque is generated. The target torque generator includes a pre-adjustment axial force calculator, a first axial force calculator, a second axial force calculator, a post-adjustment axial force calculator, and a target torque calculator. The post-adjustment axial force calculator is configured to set a proportion of a first axial force contributing to a post-adjustment axial force to be smaller when a state of a vehicle speed is abnormal than when the state of the vehicle speed is normal.
    Type: Application
    Filed: September 24, 2021
    Publication date: March 31, 2022
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yusuke KAKIMOTO, Takashi KODERA, Yoshio KUDO
  • STEERING CONTROL DEVICE
    Publication number: 20220097761
    Abstract: A steering control device includes a target torque generating unit configured to generate a target torque which is a target value of a motor torque. The target torque generating unit includes an axial component calculating unit. The axial component calculating unit includes a first calculation system configured to calculate a vehicle-speed-based axial force, a second calculation system configured to calculate an other-state-quantity-based axial force, and an output switching unit. The output switching unit is configured to output the vehicle-speed-based axial force as the axial component by validating the first calculation system when a state of the vehicle speed is normal and to output the other-state-quantity-based axial force as the axial component by validating the second calculation system when the state of the vehicle speed is abnormal.
    Type: Application
    Filed: September 27, 2021
    Publication date: March 31, 2022
    Applicant: JTEKT CORPORATION
    Inventors: Yusuke KAKIMOTO, Takashi KODERA
  • BEARING DEVICE AND ROTARY DEVICE USING BEARING DEVICE
    Publication number: 20220099140
    Abstract: A bearing device includes a rotational shaft; a first outer ring; a second outer ring; first balls; second balls disposed; and a C-spacer and a second spacer. ?>?d is satisfied, where ?d represents a difference between an inside diameter of the second spacer at an end portion on a second side and an outside diameter of a shaft outer circumferential face, and a represents a half of a difference between a diameter of a cylindrical face of the C-spacer on an outer circumferential side and a diameter of the cylindrical face of the C-spacer on an inner circumferential side.
    Type: Application
    Filed: September 23, 2021
    Publication date: March 31, 2022
    Applicant: JTEKT CORPORATION
    Inventors: Jun MATSUNAMI, Kouichi OKUDA
  • Tapered roller bearing and cage
    Patent number: 11286978
    Abstract: A tapered roller bearing includes an inner ring, an outer ring, a plurality of tapered rollers, and an annular cage having a plurality of cage pockets. Each of the cage pockets has a retainer configured to permit displacement of the tapered roller in a direction with a component in a radial direction, and restrict detachment of the tapered roller to an outer side in the radial direction by bringing the retainer into contact with a part of an outer peripheral surface of the tapered roller. The cage pockets include a first cage pocket having a first retainer with which a permissible amount of the displacement is a first displacement amount, and a second cage pocket having a second retainer with which the permissible amount of the displacement is a second displacement amount smaller than the first displacement amount.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: March 29, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Yuka Sato, Ichiro Kojima, Tomoyuki Aida, Atsushi Naitou, Kanichi Koda
  • Driving force distribution device
    Patent number: 11285806
    Abstract: A driving force distribution device includes a first output rotational member and a second output rotational member, an input rotational member, a first multiple disc clutch, a second multiple disc clutch, a pressure receiving member, a first pressing mechanism and a second pressing mechanism. The pressure receiving member includes an annular base portion and a plurality of projecting pieces, the projecting pieces include a plurality of first projecting pieces and a plurality of second projecting pieces. The first projecting pieces each have a first pressure receiving surface, the second projecting pieces each have a second pressure receiving surface.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: March 29, 2022
    Assignee: JTEKT CORPORATION
    Inventor: Noriyuki Fujii
  • Vehicle drive device
    Patent number: 11285933
    Abstract: A vehicle drive device includes a control device, and the control device controls an electric motor, a first pressing mechanism and a second pressing mechanism such that a relational expression of T<T1+T2 is satisfied, where T represents a torque that is input to an input rotation member, T1 represents a maximum of a torque that is able to be transmitted by a first multi-disc clutch and T2 represents a maximum of a torque that is able to be transmitted by a second multi-disc clutch.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: March 29, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Toshihiko Yamamoto, Tetsuya Yamazaki, Wataru Hirata, Shotaro Niimi, Tomoaki Kato
  • TURNING CONTROLLER FOR VEHICLE, COMPUTER-READABLE MEDIUM STORING TURNING CONTROL PROGRAM, AND TURNING CONTROL METHOD FOR VEHICLE
    Publication number: 20220089150
    Abstract: A turning controller for a vehicle is configured to execute: a time obtaining process that obtains collision prediction time; a lateral movement amount determining process that determines whether a target lateral movement amount is greater than or equal to a lateral movement amount determination value; and an automatic turning process that, in a case in which the collision prediction time is shorter than or equal to a determination prediction time, outputs a command for steering the front wheel to the front wheel steering device and outputs a command for steering the rear wheel to the rear wheel steering device, in order to avoid a collision between the vehicle and the obstacle; a counter-phase process in the automatic turning process in a case in which the target lateral movement amount is determined to be greater than or equal to the lateral movement amount determination value.
    Type: Application
    Filed: September 15, 2021
    Publication date: March 24, 2022
    Applicants: ADVICS CO., LTD., DENSO CORPORATION, AISIN CORPORATION, JTEKT CORPORATION, J-QuAD DYNAMICS INC.
    Inventor: Yosuke OMORI
  • Motion assisting device
    Patent number: D947388
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: March 29, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Yoshinobu Katoh, Hiromichi Ohta, Kazuyoshi Ohtsubo, Yuki Kobayashi, Shintaro Yoshida, Katsuhide Kikuchi, Mikio Shinohara
  • Motion assisting device
    Patent number: D947390
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: March 29, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Yoshinobu Katoh, Hiromichi Ohta, Kazuyoshi Ohtsubo, Yuki Kobayashi, Shintaro Yoshida, Katsuhide Kikuchi, Mikio Shinohara
  • Motion assisting device
    Patent number: D949482
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: April 19, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Yoshinobu Katoh, Hiromichi Ohta, Kazuyoshi Ohtsubo, Yuki Kobayashi, Shintaro Yoshida, Katsuhide Kikuchi, Mikio Shinohara