Patents Assigned to JTEKT
  • Publication number: 20240034406
    Abstract: A steering computing device for calculating state quantity of a steering apparatus includes a processor. The processor is configured to execute a steering angle variable acquisition process, an output shaft angle variable acquisition process, and a joint angle variable calculation process. The steering angle variable acquisition process is a process of acquiring a value of a steering angle variable. The output shaft angle variable acquisition process is a process of acquiring a value of an output shaft angle variable as a variable indicative of a rotation angle of an output shaft of the steering apparatus. The joint angle variable calculation process is a process of calculating a value of the joint angle variable. The joint angle variable is a variable defining an angle formed between an axial direction of an input shaft of the steering apparatus and an axial direction of the output shaft.
    Type: Application
    Filed: July 25, 2023
    Publication date: February 1, 2024
    Applicant: JTEKT CORPORATION
    Inventors: Shunsuke TSUJII, Yufeng LIN, Hidenori ITAMOTO, Terutaka TAMAIZUMI
  • Patent number: 11884340
    Abstract: A steering control device includes: a first calculator configured to calculate, according to a turning state, a first control amount for causing a motor to generate an assistance force; a second calculator configured to calculate a second control amount for adapting an actual angle to a target angle that is convertible into a turning angle of a steering wheel and generated when a host control device intervenes in steering control; and a third calculator configured to calculate, according to the turning state, a third control amount for offsetting the second control amount when the host control device intervenes in steering control.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: January 30, 2024
    Assignees: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Shingo Nitta, Takahiro Toko, Yoji Kunihiro, Takahiro Kojo, Hisaya Akatsuka
  • Patent number: 11885373
    Abstract: A roller bearing assembly including an tapered inner cup defining an inner raceway, an tapered outer cup defining an outer raceway, the outer raceway having a convex profile, the convex profile being defined by an intersection of the outer raceway and a central plane in which a longitudinal center axis of the roller bearing assembly lies, and a plurality of straight rollers disposed between the tapered inner cup and the tapered outer cup so that each straight roller is in rolling contact with the inner raceway and the outer raceway, each straight roller having a first end face, a second end face and a cylindrical body extending therebetween.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: January 30, 2024
    Assignee: JTEKT Bearings North America LLC
    Inventor: Scott Abrahamson
  • Publication number: 20240025471
    Abstract: A vehicle control unit includes a controller configured to make a state transition to a normal control state via a start-up state after a power source system of a vehicle is started. The start-up state is a state where it is possible to execute a preparation process, required for making a state transition to the normal control state, by controlling an operation member so as to move automatically. The controller is configured to execute, in the start-up state: a forced-ending condition determination process of determining whether a forced-ending condition showing that the preparation process being executed is to be forcedly ended from start of execution of the preparation process is met; a forced-ending process of forcedly ending the preparation process being executed when the forced-ending condition is met; and a notification process of notifying the driver of forced ending of the preparation process.
    Type: Application
    Filed: July 19, 2023
    Publication date: January 25, 2024
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Takashi KOUDAI, Yuji FUJITA, Kenichi ABE, Yugo NAGASHIMA, Kazuma HASEGAWA, Yuuta KAJISAWA, Masaharu YAMASHITA, Shintaro TAKAYAMA, Takeshi IWANA, Hiroki TOMIZAWA, Toyohiro HAYASHI, Hayaki TANABE, Nobuyori NAKAJIMA
  • Publication number: 20240025473
    Abstract: A steering control system that controls a steering device of a vehicle includes a storage unit, and a control unit configured to make a state transition to a normal control state via a start-up state after a power source system of the vehicle is started. In the start-up state, the control unit executes a correction information storing process of acquiring correction element information using a state variable obtained from the steering device and writing correction information obtained based on the correction element information into the storage unit. In the start-up state, the control unit is configured to execute an abnormal condition determination process of determining whether an abnormal condition indicating that the correction information is abnormal is met. The correction information storing process is re-executed when the abnormal condition is met. The abnormal condition determination process is executed at least either before or after the correction information storing process.
    Type: Application
    Filed: July 14, 2023
    Publication date: January 25, 2024
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Takashi KOUDAI, Yuji FUJITA, Yugo NAGASHIMA, Kazuma HASEGAWA, Yuuta KAJISAWA, Masaharu YAMASHITA, Atsushi SATOU, Yosuke YAMASHITA, Kazuaki IIDA, Shintaro TAKAYAMA, Takeshi IWANA, Toyohiro HAYASHI, Hayaki TANABE, Nobuyori NAKAJIMA, Hiroki TOMIZAWA
  • Publication number: 20240017242
    Abstract: The present invention relates to a thermal insulator containing a polymer sorbent that regenerates by desorbing adsorbed moisture, and a thermal insulation material. The thermal insulator of the present invention has the thermal insulation performance and prevents deterioration of the object by repeatedly absorbing liquid water between the object to be thermally insulated and the thermal insulator to reduce and prevent retention of water droplets between an object to be thermally insulated and a thermal insulator.
    Type: Application
    Filed: November 2, 2021
    Publication date: January 18, 2024
    Applicants: JTEKT CORPORATION, NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM
    Inventors: Toshiyuki SAITO, Kenichi RYUGO, Motoo NAKAI, Kazuki NAKANISHI
  • Publication number: 20240019038
    Abstract: A pressure reduction valve includes a body including a gas passage, a valve seat provided in the gas passage, and a valve member provided on a downstream side of the valve seat in the gas passage. The gas passage includes a primary-side passage section located on an upstream side of the valve member, and a secondary-side passage section located on a downstream side of the valve member. The primary-side passage section includes a pressure chamber, which is a space formed between the valve member and the valve seat. The valve member includes a valve member passage that connects the pressure chamber to the secondary-side passage section, and an auxiliary passage configured to assist gas that flows into the pressure chamber through a clearance between the valve member and the valve seat to flow out to the secondary-side passage section.
    Type: Application
    Filed: June 22, 2021
    Publication date: January 18, 2024
    Applicant: JTEKT CORPORATION
    Inventors: Kazushi NUMAZAKI, Tetsuya KANEKO, Akira NAKANO, Kazuhiro TAKABAYASHI, Kazuo HANEDA, Yuya KIHARA
  • Patent number: 11875685
    Abstract: A convoy travel system includes a plurality of vehicles and is configured such that the plurality of vehicles form a convoy and travel. The plurality of vehicles include a preceding vehicle and following vehicles configured so as to follow the preceding vehicle by means of automatic driving. The preceding vehicle is equipped with a steering information acquisition unit configured so as to acquire steering information pertaining to steering of the preceding vehicle, and a transmission unit configured so as to transmit the steering information to the following vehicles. The following vehicles are equipped with a reception unit configured so as to receive the steering information, and an automatic driving control unit configured so as to begin a steering angle control for avoiding a collision with an obstruction when the steering information indicates the execution of emergency steering for avoiding a collision with the obstruction.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: January 16, 2024
    Assignees: HINO MOTORS, LTD., JTEKT CORPORATION
    Inventors: Hirokazu Okuyama, Nobuhiko Kojima, Naoshi Ichinose, Hirofumi Yasui, Tomonari Yamakawa, Sadahiro Kawahara, Masayoshi Takeda, Syuuichi Yonemura
  • Publication number: 20240011555
    Abstract: A speed reducer includes: a case, a worm disposed in a housing of the case and including a proximal portion coupled to an input shaft, a worm wheel coupled to an output shaft and arranged so as to be driven in rotation by the worm, a proximal bearing holding the proximal portion of the worm in the housing, a distal bearing holding a distal portion of the worm, the distal bearing being disposed in a cylindrical distal portion of the housing, a spring held fixed in the distal portion of the housing around the distal bearing, the spring including at least one elastic blade disposed and shaped to bear on the case and to exert forces on the distal bearing in a direction towards the worm wheel.
    Type: Application
    Filed: July 11, 2023
    Publication date: January 11, 2024
    Applicant: JTEKT EUROPE
    Inventors: Philippe SIZUN, Roch MONNET, Fabien MULAS, Philippe CHAUVRAT, Arnaud DURILLON
  • Publication number: 20240010267
    Abstract: A steering control device includes a first reaction force control circuit and a second reaction force control circuit. Each of the first reaction force control circuit and the second reaction force control circuit are configured to control a reaction force motor, to execute, at a starting time, a preparation process including a process that requires the steering wheel to automatically rotate through the reaction force motor, and to store, at a time of execution completion of the preparation process, information indicating whether the preparation process has been normally completed. In a case where the first reaction force control circuit has been reset, when the information indicates that the preparation process has been normally completed, the first reaction force control circuit that has been rest is configured to not execute the preparation process at a time of restarting after completion of the reset.
    Type: Application
    Filed: July 3, 2023
    Publication date: January 11, 2024
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Kaishi MONOBE, Yuji FUJITA, Kazuma HASEGAWA, Yuuta KAJISAWA, Yugo NAGASHIMA, Takashi KOUDAI, Kenichi ABE, Masaharu YAMASHITA, Atsushi SATOU, Yosuke YAMASHITA, Kazuaki IIDA, Shintaro TAKAYAMA, Toyohiro HAYASHI, Hiroki TOMIZAWA, Nobuyori NAKAJIMA, Hayaki TANABE, Takeshi IWANA
  • Publication number: 20240010269
    Abstract: A steering control system includes a plurality of control circuits configured to control a reaction force motor and a turning motor in coordination with one another, the reaction force motor generating a steering reaction force applied to a steering wheel from which power transmission to turning wheels of a vehicle is cut off, the turning motor generating a turning force for turning the turning wheels. When at least one control circuit among the control circuits that are operating normally is reset, the reset control circuit is configured to execute a process for stopping travel of the vehicle upon restarting after completion of the reset.
    Type: Application
    Filed: July 7, 2023
    Publication date: January 11, 2024
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Yugo NAGASHIMA, Yuji FUJITA, Yuuta KAJISAWA, Kazuma HASEGAWA, Takashi KOUDAI, Masaharu YAMASHITA, Atsushi SATOU, Yosuke YAMASHITA, Kazuaki IIDA, Shintaro TAKAYAMA, Toyohiro HAYASHI, Hiroki TOMIZAWA, Nobuyori NAKAJIMA, Hayaki TANABE, Takeshi IWANA
  • Publication number: 20240000053
    Abstract: There is provided a rearing apparatus including a hatching area that holds eggs of organisms to be reared and accommodates the organisms hatched from the eggs, and a rearing area that is defined in an area larger than the hatching area at a position different from the hatching area and in which the organisms are reared. The present disclosure provides a rearing apparatus that can implement high-density and large-scale rearing by effectively utilizing areas.
    Type: Application
    Filed: November 2, 2021
    Publication date: January 4, 2024
    Applicants: JTEKT CORPORATION, Tokushima University
    Inventors: Yasuhiro MURATA, Akihiro TAKAZATO, Shigekazu KAWAI, Nozomu MIURA, Takahito WATANABE, Taro MITO
  • Publication number: 20240001949
    Abstract: A vehicle control device includes a driving control device configured to be supplied with electricity through a first power line and configured to execute a first process, and a steering control device configured to be supplied with electricity through a second power line and configured to execute a second process. The steering control device is configured such that, in a case where it is determined that power supply through the second power line has stopped during travel, when it is determined that the driving control device is not in a state of being able to execute the first process, the steering control device permits execution of the second process to stop, whereas when it is determined that the driving control device is in a state of being able to execute the first process, the steering control device does not permit execution of the second process to stop.
    Type: Application
    Filed: June 28, 2023
    Publication date: January 4, 2024
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Yugo NAGASHIMA, Yuji FUJITA, Yuuta KAJISAWA, Kazuma HASEGAWA, Takashi KOUDAI, Masaharu YAMASHITA, Atsushi SATOU, Yosuke YAMASHITA, Hiroyuki KATAYAMA, Shintaro TAKAYAMA, Toyohiro HAYASHI, Hiroki TOMIZAWA, Nobuyori NAKAJIMA, Hayaki TANABE, Takeshi IWANA
  • Patent number: 11859766
    Abstract: A fusible plug for a high pressure gas cylinder includes a communication hole filled with a low melting point alloy, a porous metal sintered body is press-fitted in at least a part of the communication hole in a length direction, all or a part of the porous metal sintered body is impregnated with the low melting point alloy to solidify and composite the low melting point alloy. It is preferable that: the low melting point alloy has a melting point of 110° C.; the porous metal sintered body to be press-fitted is a porous metal sintered body having pores with an area ratio of 30% or more and 50% or less and having pores with a diameter exceeding 5 ?m among the pores of 80% or more in terms of area ratio to all the pores; and the porous metal sintered body is a porous austenitic stainless steel sintered body.
    Type: Grant
    Filed: January 28, 2022
    Date of Patent: January 2, 2024
    Assignees: NIPPON PISTON RING CO., LTD., JTEKT CORPORATION
    Inventors: Hiroshi Takiguchi, Atsuya Aoki, Kazushi Numazaki, Takeshi Takahashi, Natsuki Iwamoto, Yudai Watanabe
  • Patent number: 11859676
    Abstract: A method of manufacturing a constituent member of a constant-velocity joint includes: performing plastic working; and performing hardening of a material. The plastic working is performed with a material of the constituent member heated to a predetermined working temperature range. The hardening of the material is performed by utilizing heat applied for heating to the working temperature range in performing the plastic working as heat for the hardening of the material and cooling the material after performing the plastic working.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: January 2, 2024
    Assignee: JTEKT CORPORATION
    Inventors: Motonori Nakao, Yohei Fukumoto, Koji Hamajima, Keiichi Kamata, Kenjiro Ikeda, Shintaro Yoshinaga
  • Publication number: 20230415586
    Abstract: A power supply device includes a driving control device and an auxiliary control device, the vehicle including a main power source, an auxiliary power source, and a supply path, the supply path being a path configured to be opened and closed according to a state of a start switch of the vehicle. The driving control device is a device that controls a state of equipment installed in the vehicle and the auxiliary control device is a device that controls a state of the auxiliary power source. The driving control device is configured to execute a storage process, a permission signal transmission process, and an initial value process, and the auxiliary control device is configured to execute a permission signal reception process and a stop process.
    Type: Application
    Filed: June 22, 2023
    Publication date: December 28, 2023
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Yuuta KAJISAWA, Yuji FUJITA, Yugo NAGASHIMA, Kazuma HASEGAWA, Takashi KOUDAI, Masaharu YAMASHITA, Atsushi SATOU, Yosuke YAMASHITA, Kazuaki IIDA, Hiroyuki KATAYAMA, Shintaro TAKAYAMA, Toyohiro HAYASHI, Takeshi IWANA, Hayaki TANABE, Nobuyori NAKAJIMA, Hiroki TOMIZAWA
  • Publication number: 20230415758
    Abstract: An electric power source apparatus includes a drive control apparatus and an auxiliary control apparatus. The drive control apparatus and the auxiliary control apparatus are configured to communicate with each other. When one of the drive control apparatus and the auxiliary control apparatus is a first control apparatus and the other of the drive control apparatus and the auxiliary control apparatus is a second control apparatus, the first control apparatus is configured to continue a function to communicate with the second control apparatus even when the first control apparatus is not able to normally communicate with the second control apparatus, and configured to execute communication with the second control apparatus when the first control apparatus is put into a state where the first control apparatus is able to normally communicate with the second control apparatus.
    Type: Application
    Filed: June 23, 2023
    Publication date: December 28, 2023
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Yuuta KAJISAWA, Yuji FUJITA, Kazuma HASEGAWA, Yugo NAGASHIMA, Takashi KOUDAI, Daiki INABA, Masaharu YAMASHITA, Atsushi SATOU, Yosuke YAMASHITA, Kazuaki IIDA, Hiroyuki KATAYAMA, Shintaro TAKAYAMA, Toyohiro HAYASHI, Takeshi IWANA, Hayaki TANABE, Nobuyori NAKAJIMA, Hiroki TOMIZAWA
  • Publication number: 20230408328
    Abstract: A monitoring device for monitoring an operation state of a device, the monitoring device includes a sound collecting device in which a plurality of microphones are arranged, the plurality of microphones being configured to convert a sound wave emitted from the device into a primary sound pressure signal, the sound wave including an audible sound and an ultrasonic wave, and an information processing device configured to perform a first processing of detecting presence or absence of an abnormality of the device, based on a signal, in an audible range, of the primary sound pressure signal, and a second processing of performing a beamforming processing on a signal, in an ultrasonic range, of the primary sound pressure signal to generate a secondary sound pressure signal, and detecting an abnormal portion of the device, based on the secondary sound pressure signal.
    Type: Application
    Filed: October 13, 2021
    Publication date: December 21, 2023
    Applicant: JTEKT CORPORATION
    Inventors: Boyko STOIMENOV, Mikio NOZAKI
  • Patent number: 11845501
    Abstract: Method for controlling a control motor, including an engine and an engine arranged in parallel, implementing: a distribution step determining a distributed torque, and a distributed torque from a target torque; a step adding a compensation request to the first distributed torque so as to determine a target motor torque; a step adding a compensation request to the distributed torque so as to determine a target motor torque; a production step in which the engine exerts a motor torque depending on the target motor torque; a step in which the engine exerts a motor torque depending on the target motor torque; the controlling method also including a permission step, configured to limit, or respectively authorize, the compensation request of a disturbance, or respectively of a failure, of the engine, and/or the compensation request, for a disturbance, or respectively a failure, of the engine.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: December 19, 2023
    Assignee: JTEKT EUROPE
    Inventors: Xavier Palandre, Tahar Slama
  • Patent number: 11845500
    Abstract: A steering system includes a control unit. The control unit includes a manual steering angle command value setting unit, a first weighting unit, a reaction combined angle command value calculating unit, a turning combined angle command value calculating unit, a reaction force control unit configured to cause a rotation angle of a reaction motor to conform to a reaction combined angle command value, and a turning angle control unit configured to cause a rotation angle of a turning motor to conform to a turning combined angle command value.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: December 19, 2023
    Assignee: JTEKT CORPORATION
    Inventors: Naoki Shoji, Tomohiro Nakade, Robert Fuchs