Patents Assigned to JTEKT
  • Publication number: 20180087569
    Abstract: A rolling device for a vehicle includes an inner raceway member including first and second inner raceways; an outer raceway member including first and second outer raceways; first rolling elements disposed rollably between the first inner raceway and the first outer raceway and second rolling elements disposed rollably between the second inner raceway and the second outer raceway; and grease disposed on raceway surfaces of the first inner raceway, the first outer raceway, the second inner raceway, and the second outer raceway and rolling surfaces of the first rolling elements and the second rolling elements. The grease includes a base oil, a thickener, and additives. The grease includes a synthetic oil as the base oil. A kinematic viscosity of the base oil at 40° C. is 20 mm2/s to 50 mm2/s. The additives include a phosphorus compound, a calcium compound, and a hydrocarbon wax.
    Type: Application
    Filed: July 26, 2017
    Publication date: March 29, 2018
    Applicant: JTEKT CORPORATION
    Inventors: Yuya INOUE, Tsuyoshi OKUMURA, Teruyuki WAKISAKA, Yoshiyuki INA, Toshihiro HAKATA, Takaaki ONIZUKA
  • Publication number: 20180087682
    Abstract: In a pressure reduction valve device, a valve body and a distal end portion of a support member are accommodated in a valve accommodation hole of a body. The distal end portion is inserted through an urging member accommodation hole. An inner introduction passage is formed between an outer peripheral surface of the distal end portion and an inner peripheral surface of the urging member accommodation hole. An outer introduction passage is formed between an outer surface of the valve body and an inner surface of the valve accommodation hole. The support member is provided with communication holes that establish communication between a gas inlet provided through the body and the valve accommodation hole in an axial direction. The inner introduction passage and the outer introduction passage are opposed, in an axial direction thereof, to the communication passage.
    Type: Application
    Filed: September 26, 2017
    Publication date: March 29, 2018
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshikatsu KUBO, Masayuki SEKINE, Akira NAKANO, Shota YAMAMOTO, Yutaka HOTTA, Akira YAMASHITA
  • Publication number: 20180086366
    Abstract: Provided is a steering controller configured to suppress deterioration of the operability of a steering wheel for steering steered wheels even when a driving voltage for a steering system has been decreased. When a clutch is in a disengaged state and steered wheels are steered by a steered-operation actuator while a reaction force is applied to steering wheel by a reaction-force actuator, if a driving voltage for the steered-operation actuator is decreased, a CPU opens relays and stops generation of torque by the steered-operation actuator. Meanwhile, a CPU engages the clutch and steers the steered wheels through cooperation between a steering torque input into the steering wheel and an assist torque generated by a reaction-force motor.
    Type: Application
    Filed: September 13, 2017
    Publication date: March 29, 2018
    Applicant: JTEKT CORPORATION
    Inventor: Takashi KODERA
  • Publication number: 20180091080
    Abstract: A microcomputer includes a current command value setting unit configured to set a two-phase current command value in a two-phase rotating coordinate system for each of PWM cycles in a current control cycle, and an open-loop control unit configured to calculate a two-phase voltage command value for each of the PWM cycles, according to a motor voltage equation, based on the two-phase current command value for each of the PWM cycles that is set by the current command value setting unit and a rotation speed of an electric motor. The two-phase voltage command value is a command value of voltage that is to be applied to the electric motor.
    Type: Application
    Filed: September 13, 2017
    Publication date: March 29, 2018
    Applicant: JTEKT CORPORATION
    Inventor: Hiroshi SUMASU
  • Patent number: 9928970
    Abstract: Provided is a lithium ion capacitor that can retain a capacity under a high temperature environment and has small increase in internal resistance while using an aqueous binder for a positive electrode. A lithium ion capacitor includes: a positive electrode; a negative electrode; and an electrolytic solution contacting the positive electrode and the negative electrode. The electrolytic solution includes an organic solvent and a lithium salt electrolyte having an imide structure; the positive electrode includes a collector foil and a positive electrode active material; and the positive electrode active material is held onto the collector foil through a binder including a polymer having a RED value to the electrolytic solution of more than 1, the RED value representing a relative energy difference with respect to the electrolytic solution based on Hansen solubility parameters.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: March 27, 2018
    Assignee: JTEKT CORPORATION
    Inventors: Takashi Matsuura, Koji Nishi, Naoki Ohmi, Yukihiro Komatsubara, Sachiko Kubota, Takashi Tamura, Takumi Mio
  • Patent number: 9927817
    Abstract: A throttle valve includes a throttle valve element; a support member that supports the throttle valve element, the support member including a valve element support portion, and a shaft portion that is connected to the valve element support portion, the shaft portion having a gas passage and an inlet port; a mounting member that mounts the support member in a throttle valve flow passage; a filter that is disposed on an outer peripheral surface of the shaft portion to cover the inlet port, in a space whose axial length is defined by the shaft portion and the mounting member; and gaskets that are respectively disposed between one axial end of the filter and the mounting member and between the other axial end of the filter and the shaft portion.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: March 27, 2018
    Assignees: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akio Nakamura, Akira Nakano, Shusuke Inagi, Akira Yamashita, Masaaki Kondo
  • Patent number: 9929417
    Abstract: A valve device includes a body, a solenoid valve accommodated in an accommodation hole of the body, and a joint member fixed to the body. The solenoid valve includes: a sleeve having a tubular shape and fitted in the accommodation hole, and including an introduction passage and a delivery passage; and a valve element configured to open and close the passages. A U-seal is disposed between an outer wall surface of the sleeve and an inner wall surface of the accommodation hole. The body has an attachment hole that is located downstream of the delivery passage of the sleeve and opens on an outer surface of the body. The joint member including a backflow reduction valve is fixed to the attachment hole.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: March 27, 2018
    Assignees: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akio Nakamura, Takuya Suzuki, Shusuke Inagi, Akira Yamashita, Masaaki Kondo
  • Patent number: 9926983
    Abstract: In a sliding shaft, an outer circumferential surface of a male shaft is coated with a resin coating layer formed by a fluidized bed powder coating method using a powder coating material containing a base resin and at least either a carbon black or a metal oxide as an antistatic agent. A steering device includes this sliding shaft as an intermediate shaft transmitting steering force.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: March 27, 2018
    Assignee: JTEKT CORPORATION
    Inventor: Kazunori Miyake
  • Publication number: 20180079047
    Abstract: A cutting tool includes: a cutting part including a cutting edge having a linear shape; and a fitted part including a fixed section to which the cutting part is fixed, and a fitted part body to be fitted to a cutting device. The cutting edge is located perpendicularly to a virtual line passing through a central axis of the fitted part body, on a plane that is perpendicular to the central axis of the fitted part body. A center of the cutting edge in its longitudinal direction is located on the virtual line.
    Type: Application
    Filed: September 6, 2017
    Publication date: March 22, 2018
    Applicant: JTEKT CORPORATION
    Inventor: Takashi YOKOYAMA
  • Publication number: 20180079301
    Abstract: A control device is mounted on a four-wheel-drive vehicle, and includes a detector and a vibration suppression controller. The detector detects the occurrence of a vibrating state, in which drive wheels and auxiliary drive wheels slip alternately in a four-wheel-drive state in which a drive force is transferred to the auxiliary drive wheels, or the occurrence of a preliminary state for the vibrating state. The vibration suppression controller reduces the drive force which is transferred to the auxiliary drive wheels via a drive force transfer device when the vibrating state or the preliminary state is detected by the detector. The vibration suppression controller reduces the drive force which is transferred to the auxiliary drive wheels on condition that a thermal load of the drive force transfer device is less than a predetermined threshold.
    Type: Application
    Filed: September 14, 2017
    Publication date: March 22, 2018
    Applicant: JTEKT CORPORATION
    Inventors: Hirokazu KONDO, Tomoaki KATO, Akiyoshi KAKITA, Kotaro SARAI
  • Publication number: 20180079448
    Abstract: Provided is a steering controller configured to switch from an interruption state to a transmission state. In a state where power transmission from the steering wheel to steered wheels is interrupted, a maximum value selection processing circuit outputs a maximum value, out of a steered angle and a steering angle, to a limiting reaction force setting processing circuit. When the absolute value of the maximum value has become equal to or larger than a limitation start threshold value, the limiting reaction force setting processing circuit rapidly increases a limiting reaction force. An operation signal generation processing circuit controls a reaction-force motor to achieve a reaction force command value corresponding to the limiting reaction force. When the absolute value of the maximum value has become equal to or larger than an engagement threshold value, a clutch is engaged to transmit reaction force from the steered wheel-side to the steering wheel.
    Type: Application
    Filed: September 12, 2017
    Publication date: March 22, 2018
    Applicant: JTEKT CORPORATION
    Inventor: Takashi KODERA
  • Publication number: 20180083564
    Abstract: A maximum spectrum peak reduction unit sets a PWM count generated by a PWM duty ratio calculation unit for a specific current control period as PWM counts for respective PWM periods within the current control period, and changes the set PWM counts for the respective PWM periods within the current control period so that a frequency component having a frequency obtained by dividing a carrier frequency in half or less is included in a PWM signal waveform within the current control period without changing a total value of the PWM counts for the respective PWM periods.
    Type: Application
    Filed: September 6, 2017
    Publication date: March 22, 2018
    Applicant: JTEKT CORPORATION
    Inventor: Hiroshi SUMASU
  • Publication number: 20180079447
    Abstract: A base current command value is calculated based on a steering torque and a vehicle speed. A desired steering angle value is a constant representing the virtual steering limit position. When a steering angle threshold is set to a value close to, and smaller than, the desired steering angle value, a first correction value is calculated so that a steering reaction force is increased rapidly when a steering angle becomes equal to or larger than the steering angle threshold. A second correction value is calculated so that the steering angle becomes equal to the desired steering angle value when the steering angle becomes equal to or larger than the steering angle threshold. The base current command value is corrected by the first correction value and the second correction value. The driver is thus restrained from turning the steering wheel to a position beyond the desired steering angle value.
    Type: Application
    Filed: September 6, 2017
    Publication date: March 22, 2018
    Applicant: JTEKT CORPORATION
    Inventors: Yoshihiro YAMASHITA, Hidenori ITAMOTO
  • Patent number: 9919371
    Abstract: A gear machining apparatus includes a machining tool having a plurality of protruding tool edges on an outer periphery of the machining tool, and driving apparatuses that form a tooth on a work piece by rotating the machining tool around a central axis thereof, rotating the work piece W around a central axis thereof, and moving the machining tool relative to the work piece. Radial outer faces of the protruding tool edges form multiple steps that are parallel to the central axis of the machining tool such that the diameter of the machining tool increases in a stepwise manner from a tool leading end toward a tool base end of the machining tool.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: March 20, 2018
    Assignee: JTEKT CORPORATION
    Inventors: Kazuki Natsuda, Hisashi Otani, Hiroyuki Nakano
  • Patent number: 9919397
    Abstract: There is provided a flexible manufacturing system that can reliably place a workpiece that isn't defective piece in a state where the workpiece will be machined again. After a pallet is conveyed to a standby position and before machining of the workpiece attached to the pallet is started, controllers determines whether machining of the workpiece with a corresponding machining device is possible. When it is determined that machining is possible, the controller starts machining with the machining device. When it is determined that machining is impossible, the controller make a conveyor convey the pallet from the standby position to a pallet storage room, and stores the machining status information on the conveyed pallet as the machining-waiting state.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: March 20, 2018
    Assignee: JTEKT CORPORATION
    Inventors: Katsuhiro Maseki, Tatsuhiko Inagaki, Takaaki Sugiura, Kazuhiro Tsujimura
  • Patent number: 9920794
    Abstract: A torque limiter is configured from a ring body and a spring-form part provided in the ring body. The ring body includes a band-form metal plate and is bent approximately into a C-shape along the circumferential direction of a motor shaft and a lock holder. The spring-form part is formed so as to be capable of radial elastic deformation. The spring-form part is configured from main protrusions arranged in a compressed state between the motor shaft and the lock holder, and from sub-protrusions arranged in a non-compressed state. Further, grease is stored in a part or all of the concavities formed by the main protrusions and the sub-protrusions.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: March 20, 2018
    Assignees: JTEKT CORPORATION, TOGO SEISAKUSYO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshihiro Asakura, Masatoshi Fujimoto, Toshiaki Ogata, Yukihiko Kanayama, Hirotsune Suzuki, Yuji Nakamura, Yuzo Hirakawa, Kenji Hayashi, Hiroyuki Toyoda
  • Patent number: 9921565
    Abstract: A programming assist device for a PLC program and a programming assist method for a PLC program capable of easily preparing separate executable files for causing redundant CPUs of a PLC to operate and reliably preventing an emergency stop of the PLC due to a failure in converter software are provided. First and second intermediate codes are generated from an original program. An inverse conversion program is generated from the first intermediate code. A reconverted first intermediate code and a reconverted second intermediate code are generated from the inverse conversion program. In the case where the intermediate codes and the reconverted intermediate codes match each other, a first executable file is generated from the reconverted first intermediate code, and a second executable file is generated from the reconverted second intermediate code. The executable files are transferred to the PLC.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: March 20, 2018
    Assignee: JTEKT CORPORATION
    Inventor: Kenichi Ikegami
  • Publication number: 20180075779
    Abstract: A training assistance apparatus includes a skilled operation condition acquiring unit configured to acquire an operation condition of a skilled operator on a processing machine in advance, and an unskilled operation condition acquiring unit configured to acquire, when an unskilled operator executes an operation, an operation condition of the unskilled operator so that the operation condition of the unskilled operator is comparable with the operation condition acquired by the skilled operation condition acquiring unit for training of the unskilled operator.
    Type: Application
    Filed: September 11, 2017
    Publication date: March 15, 2018
    Applicant: JTEKT CORPORATION
    Inventors: Toshiyuki TSUZUKI, Toshio AONO
  • Publication number: 20180073565
    Abstract: A fitting structure includes an annular seal member; a first fitting member including a first tubular fitting portion having a tubular shape, a first holding portion that contacts the seal member from a first axial end side, and a first restricting portion provided at a position different from a position of the first holding portion; and a second fitting member including a second tubular fitting portion having a tubular shape that is fitted to the first tubular fitting portion from a second axial end side, a second holding portion that contacts the seal member from the second axial end side, and a second restricting portion that contacts the first restricting portion from the second axial end side in a state where the seal member is compressed by a prescribed amount between the first holding portion and the second holding portion.
    Type: Application
    Filed: September 5, 2017
    Publication date: March 15, 2018
    Applicants: JTEKT CORPORATION, MARUGO RUBBER INDUSTRIES, LTD.
    Inventors: Yoshiaki IZUMI, Toshiyuki OHSARA, Tsuneharu TAKIZAWA, Makoto MIYAWAKI, Sosuke IMAOKA, Shohei FUJITA
  • Publication number: 20180073624
    Abstract: The invention concerns a device for protecting a steering mechanism of a vehicle, said device comprising a housing element defining a chamber of which the wall is perforated with at least one access opening, and a plastic cap that shuts said access opening, said cap having, along the director axis (XX?) thereof, a stepped structure comprising a hub, which is engaged in a bore of the access opening and carries a sealing lining that engages with said bore, then a collar, of which the overall diameter is greater than the diameter of the bore, said collar being engaged by snap-fitting into a stop groove hollowed into the housing element, and forming a baffle deflector of which the diameter is greater than that of the bore.
    Type: Application
    Filed: November 24, 2017
    Publication date: March 15, 2018
    Applicant: JTEKT EUROPE
    Inventors: Roch MONNET, Caroline GEX