Patents Assigned to JTEKT
  • Patent number: 11772175
    Abstract: A gear machining apparatus includes: a hob cutter; at least one processor; and at least one memory having instructions. The instructions, when executed by the at least one processor, cause the gear machining apparatus to perform operations including: performing first chamfering on a first axial end of a gear profile by relatively moving the hob cutter with respect to a workpiece in radial and axial directions of the workpiece; performing, subsequent to the first chamfering, gear profile machining by relatively moving the hob cutter with respect to the workpiece in the axial direction; and performing, subsequent to the gear profile machining, second chamfering on a second axial end of the gear profile by relatively moving the hob cutter with respect to the workpiece in the radial and axial directions.
    Type: Grant
    Filed: July 9, 2021
    Date of Patent: October 3, 2023
    Assignee: JTEKT CORPORATION
    Inventors: Kiyoshi Takemori, Hisashi Otani, Hiroyuki Nakano
  • Publication number: 20230304804
    Abstract: A controller computes availability of the vehicle that indicates a range reachable by the vehicle by actuation of the actuator and generates a first travel route within a range of the availability of the vehicle, as a travel route followed by the vehicle, when the vehicle travels along a road ahead of the vehicle from a present position. When the road includes a curve and the first travel route cannot be generated within the availability range, the controller sets a target position to a position in the road located before the curve and generates a second travel route within the availability range, as the travel route followed by the vehicle, to stop the vehicle at the target position.
    Type: Application
    Filed: January 26, 2023
    Publication date: September 28, 2023
    Applicants: ADVICS CO., LTD., J-QuAD DYNAMICS INC., DENSO CORPORATION, AISIN CORPORATION, JTEKT CORPORATION
    Inventor: Yosuke OHMORI
  • Publication number: 20230303159
    Abstract: A turning control device includes a precursor detection circuit configured to detect a precursor of an abnormality by which a smooth operation of a turning device is impaired. The precursor detection circuit is configured to start measurement of a total running time of a vehicle when the precursor is detected, and is configured to execute a process of reporting the precursor, based on the measured total running time. The precursor detection circuit is configured to perform the measurement of the total running time regardless of whether the precursor is detected again, when a vehicle electric power source is switched off and then is switched on again after the precursor is detected once.
    Type: Application
    Filed: January 24, 2023
    Publication date: September 28, 2023
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi Koudai, Yuji Fujita, Yugo Nagashima, Kazuma Hasegawa, Yuuta Kajisawa, Masaharu Yamashita, Yosuke Yamashita, Kazuaki Iida, Shintaro Takayama
  • Publication number: 20230303153
    Abstract: A system for assisting a driver to get in and out of a vehicle, including a steering device with: a steering column having a longitudinal axis about which the steering column may pivot, said column being connected to a steering wheel, and a force feedback module fixed to the steering column, said module including a controller capable of calculating a force and an actuator capable of applying said force to the steering column so as to cause the steering column to pivot about the longitudinal axis to guide the steering column connected to the steering wheel in a predetermined position when a driver is getting in and out, lock the steering column connected to the steering wheel in the position predetermined when a driver is getting in and out. A vehicle includes said system and a method for assisting a driver to get in and out of the vehicle.
    Type: Application
    Filed: July 23, 2021
    Publication date: September 28, 2023
    Applicant: JTEKT EUROPE
    Inventor: Pierre LARMINY
  • Patent number: 11770094
    Abstract: A motor controller includes individual drive circuits, a plurality of energization systems, and a processing circuit that outputs a plurality of individual control signals. The processing circuit executes a first calculation process, a second calculation process, a third calculation process, and a fourth calculation process for each of the energization systems. The first calculation process is a process of calculating individual current command values. The second calculation process is a process of calculating the estimated temperatures of protection targets. The third calculation process is a process of calculating individual limit values. The fourth calculation process is a process of calculating the individual control signals based on the individual current command values that are limited by the individual limit values. The processing circuit calculates the estimated temperatures of the protection targets where current of a target system flows.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: September 26, 2023
    Assignee: JTEKT CORPORATION
    Inventors: Tomohiro Niwa, Junya Honda, Hiroki Maeda
  • Publication number: 20230294761
    Abstract: A steering device includes a steering shaft, a motor, a stopper mechanism, and a controller. The controller is configured to execute a first process and a second process when a determined condition is established. The first process includes causing the steering wheel to operate to a first operation end through control of the motor and thereafter operate in reverse to a second operation end. The second process includes computing a neutral position of the steering wheel based on a rotational angle of the motor at a time when reverse operation of the steering wheel is started and at a time when the reverse operation of the steering wheel is ended.
    Type: Application
    Filed: May 22, 2023
    Publication date: September 21, 2023
    Applicant: JTEKT CORPORATION
    Inventors: Yusuke KAKIMOTO, Yoshiyuki UCHINO, Kenji SHIBATA, Takafumi SATO
  • Patent number: 11760410
    Abstract: A method for the gradual activation and deactivation of a steering return function in a vehicle, the vehicle including at least two wheels, a steering wheel, an assist motor applying an assist torque to a steering rack, and a drive motor applying a wheel torque to the wheels, the method including a step of calculating an application gain including a first phase of determining a first gain dependent on the wheel torque of at least one of the two wheels, a step of estimating the assist torque associated with the return function, and a step of multiplying the assist torque associated with the return function and the application gain, wherein during the application gain calculation step the method also includes a second phase of determining a second gain dependent on the angle of the steering wheel and the difference in the rotation speeds of the at least two wheels.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: September 19, 2023
    Assignee: JTEKT EUROPE
    Inventors: Luc Leydier, André Michelis
  • Patent number: 11760409
    Abstract: A steering device is connected to a turning mechanism to which a part of a turning force is applied by a hydraulic mechanism. The steering device includes an electric motor, a rotation angle detector, and a steering control device. The steering control device is configured to acquire a target turning angle which is a target value of a turning angle of turning wheels, to control the electric motor such that a turning angle of the turning wheels reaches the target turning angle, to estimate a delay of an actual turning angle of the turning wheels with respect to the target turning angle based on a delay model with the detected rotation angle as an input, to output delay information, and to correct the target turning angle based on the delay information.
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: September 19, 2023
    Assignee: JTEKT CORPORATION
    Inventor: Takanobu Nagano
  • Publication number: 20230286569
    Abstract: A steering control device calculates a target angle of a shaft that rotates in conjunction with a turning operation of a turning wheel that is isolated from dynamic power transmission with a steering wheel, depending on a steering state of the steering wheel, and executes a feedback control to cause an actual angle to follow the target angle, for controlling electricity supply to a turning motor to turn the turning wheel, the steering control device including: a first processing unit to execute a process to alter the target angle independently of the steering state of the steering wheel; and a second processing unit to calculate a turning state amount for a guide monitor function to assist traveling of a vehicle, by reducing or removing an influence of an alteration of the target angle on the actual angle of the shaft.
    Type: Application
    Filed: March 9, 2023
    Publication date: September 14, 2023
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Junya MIYAKE, Atsushi Ishihara, Yusuke Kakimoto, Hidetsugu Toyama, Tomoyuki Iida
  • Publication number: 20230278624
    Abstract: A motion control device includes a request value acquisition unit that obtains a motion amount request value, a limit value setting unit that sets first to third motion amount limit values, a first command unit that sends a first motion amount command value based on the motion amount request value and a first motion amount limit value to a front wheel steering controller, a second command unit that sends a second motion amount command value based on a first remaining request value and a second motion amount limit value to a rear wheel steering controller, and a third command unit that sends a command corresponding to a third motion amount command value based on a second remaining request value and a third motion amount limit value to a driving controller and a braking controller.
    Type: Application
    Filed: January 26, 2023
    Publication date: September 7, 2023
    Applicants: ADVICS CO., LTD., J-QuAD DYNAMICS INC., DENSO CORPORATION, AISIN CORPORATION, JTEKT CORPORATION
    Inventor: Yosuke OHMORI
  • Patent number: 11747230
    Abstract: A sensor device includes a main driving gear, driven gears, an biasing member configured to bias the driven gears toward the main driving gear, a support member configured to support the biasing member, and a sensor configured to generate an electrical signal based on rotation of the driven gears. In a force applied when the biasing member biases the driven gears, assuming that a direction orthogonal to a tangent line at a point of action of the force is set as a first direction, the first direction is different from a second direction.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: September 5, 2023
    Assignee: JTEKT CORPORATION
    Inventors: Yuichi Toyama, Toshiaki Murakami
  • Patent number: 11745792
    Abstract: A steering device includes a steering member, a steering operation mechanism, a reactive force motor, a steering motor that drives the steering operation mechanism, a steering torque sensor, and an electronic control unit. The electronic control unit sets a manual steering angle command value. The electronic control unit computes a reactive-force-related composite angle command value. The electronic control unit computes a steering-related composite angle command value based on a steering-related automatic steering angle command value and the manual steering angle command value. The electronic control unit causes a rotational angle of the reactive force motor to follow the reactive-force-related composite angle command value. The electronic control unit causes a rotational angle of the steering motor to follow the steering-related composite angle command value. The electronic control unit estimates a first disturbance torque.
    Type: Grant
    Filed: July 9, 2021
    Date of Patent: September 5, 2023
    Assignee: JTEKT CORPORATION
    Inventors: Naoki Shoji, Tomohiro Nakade, Robert Fuchs
  • Publication number: 20230275243
    Abstract: A fuel cell includes a discharge structure that discharges water generated in a cathode electrode in association with an electrode reaction in the MEA to the outside. The discharge structure includes a discharge path through which air that is an oxidant flows, a passage that communicably connects an oxidant supply flow path and the discharge path and that moves water generated in the cathode electrode to the discharge path, and a discharge portion that discharges the generated water moved to the discharge path to the outside.
    Type: Application
    Filed: August 25, 2021
    Publication date: August 31, 2023
    Applicants: JTEKT CORPORATION, NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITY
    Inventors: Takuya TSUJIGUCHI, Yasuhide TAKEDA, Motoo NAKAI, Toshiyuki SAITO, Atsushi KUBO, Mototake FURUHASHI, Ayumi NAKASONE, Atsushi NAKANE, Fumitaka ACHIWA
  • Publication number: 20230272299
    Abstract: The present invention relates to a grease composition including: a base oil; a thickener; a rust inhibitor; and an extreme pressure agent, in which the rust inhibitor includes, with respect to a total mass of the grease composition: 0.10 mass % to 10.00 mass % of a calcium sulfonate; 0.20 mass % to 10.00 mass % of a zinc sulfonate; and 0.10 mass % to 10.00 mass % of a zinc carboxylate, and the extreme pressure agent includes, with respect to the total mass of the grease composition, 2.00 mass % to 14.00 mass % of a zinc dialkyldithiophosphate.
    Type: Application
    Filed: July 5, 2021
    Publication date: August 31, 2023
    Applicants: JTEKT CORPORATION, KYODO YUSHI CO., LTD.
    Inventors: Kanako NIIYA, Kazunori MIYAKE, Masayuki MURAKAMI, Shota AKIMOTO, Takahiro MAEDA, Kaname NISHI, Michitaka YOSHIHARA, Kazuki ISA, Koki ANDO
  • Patent number: 11738798
    Abstract: A turning control system includes a controller. The controller is configured to perform a decrease process of decreasing a magnitude of an angle operation amount which is reflected in an operation process with respect to the magnitude of the angle operation amount calculated in an angle operation amount calculating process when a vehicle speed is equal to or lower than a prescribed speed and a magnitude of an input torque of a steering wheel is equal to or less than a prescribed value. The controller is configured to perform a correction process of correcting an input when the decrease process is performed such that a magnitude of the input decreases when an angle command value calculating process calculates an angle command value.
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: August 29, 2023
    Assignee: JTEKT CORPORATION
    Inventor: Terutaka Tamaizumi
  • Patent number: 11732754
    Abstract: A roller retainer cage for a roller thrust bearing, including a first cage half with an annular portion, a first flange extending axially from an inner peripheral edge of the annular portion and a second flange extending axially from an outer peripheral edge of the annular portion, a second cage half including an annular portion, a first flange extending axially from an inner peripheral edge of the annular portion and a second flange extending axially from an outer peripheral edge of the annular portion, wherein the first flange of the first cage half is disposed radially-outwardly of the first flange of the second cage half, the second flange of the first cage half is disposed radially-inwardly of the second flange of the second cage half, and the first cage half is comprised of a through-hardened metal.
    Type: Grant
    Filed: June 1, 2022
    Date of Patent: August 22, 2023
    Assignee: JTEKT Bearings North America LLC
    Inventors: Yoshitaka Waseda, Trent Carpenter
  • Publication number: 20230259328
    Abstract: An information provision system includes a processor and a memory storing instructions that, when executed by the processor, cause the information provision system to perform operations. The operations include: acquiring position information of a user and line-of-sight direction information of the user; estimating a target visually recognized by the user based on the position information, the line-of-sight direction information, and target position information for targets visually recognizable by the user; outputting, by sound, description information about the target in accordance with a setting; detecting a motion of a head of the user; estimating an intention of the user based on the motion during output of the description information; selecting the setting in accordance with the intention; and outputting, in response to change of the setting, the description information in accordance with the setting after the change.
    Type: Application
    Filed: February 15, 2023
    Publication date: August 17, 2023
    Applicants: JTEKT CORPORATION, connectome.design Inc.
    Inventors: Hiroki UMEZAWA, Yoshiyuki SHIBATA, Takashi MATSUMOTO, Akira SATO
  • Publication number: 20230258256
    Abstract: A pulley body has a first flange and a fitting protrusion. The flange body has a second flange and a fitting recess fitted to the fitting protrusion. The fitting recess has an inner surface including, in a radially inward direction, a first inclined surface inclined so as to approach the first flange, as extending in the radially inward direction. The fitting protrusion has a distal end surface including, in the radially inward direction, a second inclined surface facing the first inclined surface. The flange body has an outer peripheral surface that faces an inner peripheral surface of the pulley body, and has a protrusion which continues in a circumferential direction with no end. A region including an annular-shaped area between the first and second inclined surfaces includes a joint portion of a molten resin.
    Type: Application
    Filed: February 2, 2023
    Publication date: August 17, 2023
    Applicants: JTEKT CORPORATION, NAKANISHI METAL WORKS CO., LTD.
    Inventors: Ayumi YAMAMORI, Shuhei YAMASHITA, Masayoshi NAKAMURA, Ryotaro TANIGUCHI
  • Patent number: 11725702
    Abstract: An axle disconnect device including a shift collar slidable in an axial direction of the axle disconnect device, the shift collar switchable between a connect mode and a disconnect mode; a first solenoid including a threaded end; a second solenoid including locker arm; a return spring configured to bias a movement of the shift collar towards the connect mode; a groove on the shift collar configured to receive the locker arm when the shift collar is in the connect mode; and a lead screw on the shift collar configured to mesh with the threaded end to move the shift collar toward the disconnect mode against the bias force of the return spring.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: August 15, 2023
    Assignee: JTEKT AUTOMOTIVE NORTH AMERICA, INC.
    Inventors: Patrick Desing, Shun Ono
  • Patent number: 11724732
    Abstract: A steering control device includes an electronic control unit configured to i) detect an absolute steering angle, ii) determine whether movement of a turning shaft to one of right and left sides has been limited, iii) acquire a limit position determination angle corresponding to the absolute steering angle detected when the electronic control unit determines that the movement of the turning shaft has been limited, and iv) set an end-position-corresponding angle based on the limit position determination angle, the end-position-corresponding angle being an angle indicating that the turning shaft is located at a right or left end position, and the end-position-corresponding angle being associated with the absolute steering angle.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: August 15, 2023
    Assignee: JTEKT CORPORATION
    Inventors: Takahiro Toko, Nobuaki Kataoka, Takafumi Yamaguchi, Yukinobu Ezaki