Patents Assigned to JTEKT
  • Publication number: 20220009547
    Abstract: A steering device incudes an electric motor configured to steer a steered wheel coupled to a steering wheel and a control unit configured to control the electric motor and change a steering angle of the steered wheel. The control unit includes an angle feedback control unit configured to execute automatic traveling control and automatic parking control, and a gain setting unit configured to set a feedback gain in the automatic parking control to a value smaller than a feedback gain in the automatic traveling control.
    Type: Application
    Filed: November 19, 2019
    Publication date: January 13, 2022
    Applicants: JTEKT CORPORATION, NISSAN MOTOR CO., LTD.
    Inventors: Shintaro OSAJIMA, Taisuke UEDA, Yosuke YAMAMOTO, Masaya ISHIMOTO, Gempei NAKASONE, Hiromasa TAMAKI, Shinya AONO, Yoshihiro YAMASHITA
  • Publication number: 20220009016
    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: Application
    Filed: July 9, 2021
    Publication date: January 13, 2022
    Applicant: JTEKT CORPORATION
    Inventors: Kiyoshi TAKEMORI, Hisashi OTANI, Hiroyuki NAKANO
  • Patent number: 11221046
    Abstract: A manufacturing method of a wheel bearing device, the wheel bearing device including an outer ring member, an inner shaft member that includes a shaft portion that has an inside raceway and a flange portion, a plurality of rolling elements, a seal provided at an end portion of the outer ring member on the first axial side and including an axial lip, and a lip contact surface provided on the side of the inner shaft member and contacted by the axial lip, includes: processing the outside raceway with a distance in an axial direction from a first reference position being managed, a first reference position being set on the outer ring member; and providing the seal at a predetermined position, in the axial direction, of the outer ring member with respect to the first reference position.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: January 11, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Koki Shiramizu, Nobuyuki Seo
  • Patent number: 11220267
    Abstract: A vehicle control device mounted on a four-wheel drive vehicle including a driving force transmission system includes an electronic control unit. The electronic control unit calculates a command torque based on vehicle information. The electronic control unit estimates a temperature of a heat generating location in the driving force transmission system based on the command torque. The electronic control unit estimates the temperature of the heat generating location based on an estimated value of a driving force input to an input rotating member, when it is not possible for the driving force corresponding to the command torque to be transmitted to auxiliary drive wheels due to a magnitude of the driving force generated by a drive source or occurrence of a wheel slip.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: January 11, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Kaoru Sobue, Go Nagayama
  • Patent number: 11221044
    Abstract: A rolling bearing includes: an inner ring; an outer ring; a plurality of rolling elements provided between an inner ring raceway and an outer ring raceway; and a cage that holds the rolling elements at intervals in a circumferential direction. The cage includes an annular portion provided in a first axial direction with respect to the rolling elements, and a plurality of cage bars provided to extend in a second axial direction from the annular portion. The annular portion includes a contact surface that makes sliding contact with a shoulder portion. The cage bars each include a first projecting portion and a second projecting portion. The second projecting portion covers a part of the inner ring raceway on a side of the shoulder portion.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: January 11, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Keisuke Kojima, Katsuyuki Harada, Naoki Masuda, Hironori Hiraoka
  • Publication number: 20220006244
    Abstract: A connecting member includes a first electrically-conductive member, a second electrically-conductive member, and an insulating member that accommodates the first electrically-conductive member and the second electrically-conductive member. Each of the first electrically-conductive member and the second electrically-conductive member includes an electric power supply-side connecting portion, a first substrate-side connecting portion, a second substrate-side connecting portion, and a branching portion that branches off to a second electric power supply channel to the second substrate-side connecting portion, at an intermediate point on a first electric power supply channel from the electric power supply-side connecting portion to the first substrate-side connecting portion. The branching portion of the first electrically-conductive member and the branching portion of the second electrically-conductive member are disposed inside the insulating member.
    Type: Application
    Filed: July 1, 2021
    Publication date: January 6, 2022
    Applicant: JTEKT CORPORATION
    Inventors: Masato ODA, Yuto SATO
  • Publication number: 20220000700
    Abstract: An assist device includes a first body-worn unit, second body-worn units, an actuator, a sensor, and a controller including a processing unit configured to obtain a command value for assist torque based on a detection result of the sensor and using correspondence information indicating a relation between a forward swing speed of a leg and a torque compensation value including first and second torque compensation values. The processing unit is configured to perform an adjustment process of changing the first torque compensation value based on the forward swing angle of at least one of right and left legs of a user, in a case where the processing unit obtains the command value.
    Type: Application
    Filed: July 1, 2021
    Publication date: January 6, 2022
    Applicant: JTEKT CORPORATION
    Inventors: Yoshitaka YOSHIMI, Toshiki KUMENO
  • Publication number: 20220003298
    Abstract: A nut includes a circulation passage such that balls are circulated through the circulation passage from a first axial end part of rolling raceway to a second axial end part of the rolling raceway. The nut includes a nut body, and end members connected to the opposite axial ends of the nut body. The nut body includes a first member and a second member. The first member includes a second spiral groove on the inner periphery of the first member and a passage having a groove shape opened radially outwardly, the passage being formed on the outer periphery of the first member such that the passage constitutes part of the circulation passage. The second member is placed radially outwardly from the first member and closes the passage from its radially outer side.
    Type: Application
    Filed: June 28, 2021
    Publication date: January 6, 2022
    Applicant: JTEKT CORPORATION
    Inventors: Ikuo YAMAMOTO, Akiyoshi TASHIRO, Tomoya YAMATANI
  • Publication number: 20220000701
    Abstract: An assist device includes a first body-worn unit; second body-worn units; an actuator; a controller configured to obtain an assist parameter that determines assist torque to be generated, and perform control to operate the actuator at an output based on the assist parameter; and a tilt angle detection part configured to obtain tilt angle information on a tilt angle of an upper body of a user. The actuator includes arms; and swing angle detection parts configured to obtain swing angle information on swing angles of the arms that represent angles formed by the upper body and thighs of the user. The controller is configured to obtain the assist parameter based on the swing angle information and the tilt angle information.
    Type: Application
    Filed: July 6, 2021
    Publication date: January 6, 2022
    Applicant: JTEKT CORPORATION
    Inventor: Yoshitaka YOSHIMI
  • Patent number: 11215230
    Abstract: A rolling-sliding member that is high in hardness and continues to have a passivation film reliably even after being subjected to a process that does not require any processing for removal of scale etc., as well as a rolling bearing using the same and a method for manufacturing the rolling-sliding member.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: January 4, 2022
    Assignees: JTEKT CORPORATION, DAIDO STEEL CO., LTD.
    Inventors: Nao Inazaki, Fumihiro Furukawa, Kanji Kawasaki, Hisato Nishisaka, Tomoya Hattori, Kazuhisa Kitamura, Yusuke Kusafuka, Keita Hinoshita, Hiroyuki Takabayashi, Kazuhisa Ishida
  • Patent number: 11214293
    Abstract: A steering apparatus includes a steering wheel that rotates about a first rotation axis, a folding mechanism that folds the steering wheel along the first rotation axis, a moving mechanism that moves the steering wheel between a protruding position in which the steering wheel protrudes from a dashboard of the vehicle and a stored position closer to the dashboard than the protruding position, and an electronic control unit that drives the folding mechanism and the moving mechanism. When the folded steering wheel is moved from the protruding position to the stored position, the electronic control unit drives, in advance, a drive member mounted on the vehicle so that the steering wheel is retracted relative to a body of a driver.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: January 4, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Yousuke Nishimura, Norihiro Ochi, Takeshi Watanabe, Yasuyuki Nozawa, Kei Kitahara
  • Publication number: 20210403076
    Abstract: A steering system includes a first operation device including a first displacement mechanism, a first electric drive source, and a first detector, a second operation device including a second displacement mechanism, a second electric drive source, and a second detector, and a determiner configured to determine that the first operation device and the second operation device do not malfunction when the determiner determines that the first operation device has an abnormality based on first operation information related to operation of the first operation device, and that the second operation device has an abnormality based on second operation information related to operation of the second operation device.
    Type: Application
    Filed: June 24, 2021
    Publication date: December 30, 2021
    Applicant: JTEKT CORPORATION
    Inventors: Syouma EDAMOTO, Takeshi WATANABE, So SAITO
  • Patent number: 11208143
    Abstract: In a control device for a steering mechanism, the steering mechanism includes a motor that includes a plurality of coils. The plurality of coils include a first coil and a second coil. The control device includes a first control system and a second control system configured to compute a command value for torque of the motor to be applied to the steering mechanism. The first control system and the second control system are each configured to control power supply to the plurality of coils of the motor based on the command value. The first control system includes a first microcomputer that has first characteristics, and the second control system includes a second microcomputer that has second characteristics that are different from the first characteristics.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: December 28, 2021
    Assignee: JTEKT CORPORATION
    Inventors: Hiroshi Kawamura, Yuji Fujita
  • Patent number: 11209066
    Abstract: A method of manufacturing a damping device, notably for a steering tie rod, the said device comprising a rod which extends along a main axis and which is intended to be connected to a first mechanical component, a securing portion which surrounds the said rod and which is intended to be connected to a second mechanical component, and a sleeve made of elastomeric material which is arranged between the rod and the fixing bushing so as, through elastic deformation thereof, to allow at least axial movement of the fixing bushing with respect to the rod, in which method the fixing bushing is offset axially with respect to the rod to force the elastic deformation of the sleeve and the introduction of a corresponding preload, then the sleeve is locked so as to keep it, when the device is at rest, in a state of permanent axial elastic deformation and preload.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: December 28, 2021
    Assignee: JTEKT EUROPE
    Inventor: Philippe Durand
  • Patent number: 11207979
    Abstract: A drive device for a vehicle includes an electric motor, a speed reduction device configured to reduce the speed of rotation transferred from the electric motor, and a drive force distribution device that distributes and outputs a drive force of the electric motor that is input via the speed reduction device to a first output rotary member and a second output rotary member. The speed reduction device has a first gear member, a second gear member, a coupling member, and a moving mechanism.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: December 28, 2021
    Assignee: JTEKT CORPORATION
    Inventor: Noriyuki Fujii
  • Publication number: 20210394825
    Abstract: A steering system includes a steering shaft; a motor configured to generate a torque applied to the steering shaft; and a control unit configured to control the motor. The control unit has a function of performing steering angle feedback control for causing a steering angle that is a rotation angle of a steering wheel to reach a target steering angle that is set based on a point of view of adjusting a rotational position of the steering wheel, as an adjustment process of adjusting the rotational position of the steering wheel. The control unit is configured to set a limit value for limiting a change range of the target steering angle with respect to the steering angle at each moment in a period in which automatic rotation of the steering wheel is hindered in a case where the automatic rotation is hindered while the adjustment process is being performed.
    Type: Application
    Filed: June 14, 2021
    Publication date: December 23, 2021
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yusuke KAKIMOTO, Yoshiyuki UCHINO, Kenji SHIBATA, Takafumi SATO
  • Publication number: 20210394820
    Abstract: A steering system includes a steering shaft that rotates along with an operation of a steering wheel; a motor configured to generate a torque that is applied to the steering shaft; and a control unit configured to control the motor. The control unit is configured to control the motor such that a rotation speed of the steering wheel decreases gradually to zero when automatic rotation of the steering wheel is stopped, in a case where the steering wheel is automatically rotated as an adjustment process of adjusting a rotational position of the steering wheel.
    Type: Application
    Filed: June 14, 2021
    Publication date: December 23, 2021
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yusuke KAKIMOTO, Yoshiyuki UCHINO, Kenji SHIBATA, Takafumi SATO
  • Publication number: 20210394821
    Abstract: A steering system includes a steering operation shaft in which power transmission to and from a steering wheel is disabled and that steers a steered wheel of a vehicle, a steering operation motor that generates a steering operation force that is a torque applied to the steering operation shaft so as to steer the steered wheel, and a control device that controls the steering operation motor. When a rotation position of the steering wheel is different from a rotation position corresponding to a steered position of the steered wheel, the control device executes a process for correcting the steered position of the steered wheel to a position corresponding to the rotation position of the steering wheel through the steering operation motor.
    Type: Application
    Filed: June 14, 2021
    Publication date: December 23, 2021
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yusuke KAKIMOTO, Takashi KODERA, Kenji SHIBATA, Takafumi SATO
  • Publication number: 20210394824
    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: June 7, 2021
    Publication date: December 23, 2021
    Applicant: JTEKT CORPORATION
    Inventors: Yusuke KAKIMOTO, Yoshiyuki UCHINO, Kenji SHIBATA, Takafumi SATO
  • Patent number: D940173
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: January 4, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Ryosuke Kogi, Kazunari Ogura, Hidetoshi Tokunaga, Tomokazu Takayama, Takahito Umeki, Masanori Ando, Hiroyuki Tsusaka