Patents Assigned to JTEKT
-
Patent number: 11772175Abstract: 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: GrantFiled: July 9, 2021Date of Patent: October 3, 2023Assignee: JTEKT CORPORATIONInventors: Kiyoshi Takemori, Hisashi Otani, Hiroyuki Nakano
-
Publication number: 20230304804Abstract: 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: ApplicationFiled: January 26, 2023Publication date: September 28, 2023Applicants: ADVICS CO., LTD., J-QuAD DYNAMICS INC., DENSO CORPORATION, AISIN CORPORATION, JTEKT CORPORATIONInventor: Yosuke OHMORI
-
Publication number: 20230303159Abstract: 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: ApplicationFiled: January 24, 2023Publication date: September 28, 2023Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takashi Koudai, Yuji Fujita, Yugo Nagashima, Kazuma Hasegawa, Yuuta Kajisawa, Masaharu Yamashita, Yosuke Yamashita, Kazuaki Iida, Shintaro Takayama
-
Publication number: 20230303153Abstract: 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: ApplicationFiled: July 23, 2021Publication date: September 28, 2023Applicant: JTEKT EUROPEInventor: Pierre LARMINY
-
Patent number: 11770094Abstract: 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: GrantFiled: March 31, 2021Date of Patent: September 26, 2023Assignee: JTEKT CORPORATIONInventors: Tomohiro Niwa, Junya Honda, Hiroki Maeda
-
Publication number: 20230294761Abstract: 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: ApplicationFiled: May 22, 2023Publication date: September 21, 2023Applicant: JTEKT CORPORATIONInventors: Yusuke KAKIMOTO, Yoshiyuki UCHINO, Kenji SHIBATA, Takafumi SATO
-
Patent number: 11760410Abstract: 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: GrantFiled: July 9, 2019Date of Patent: September 19, 2023Assignee: JTEKT EUROPEInventors: Luc Leydier, André Michelis
-
Patent number: 11760409Abstract: 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: GrantFiled: May 18, 2021Date of Patent: September 19, 2023Assignee: JTEKT CORPORATIONInventor: Takanobu Nagano
-
Publication number: 20230286569Abstract: 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: ApplicationFiled: March 9, 2023Publication date: September 14, 2023Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Junya MIYAKE, Atsushi Ishihara, Yusuke Kakimoto, Hidetsugu Toyama, Tomoyuki Iida
-
Publication number: 20230278624Abstract: 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: ApplicationFiled: January 26, 2023Publication date: September 7, 2023Applicants: ADVICS CO., LTD., J-QuAD DYNAMICS INC., DENSO CORPORATION, AISIN CORPORATION, JTEKT CORPORATIONInventor: Yosuke OHMORI
-
Patent number: 11747230Abstract: 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: GrantFiled: December 21, 2021Date of Patent: September 5, 2023Assignee: JTEKT CORPORATIONInventors: Yuichi Toyama, Toshiaki Murakami
-
Patent number: 11745792Abstract: 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: GrantFiled: July 9, 2021Date of Patent: September 5, 2023Assignee: JTEKT CORPORATIONInventors: Naoki Shoji, Tomohiro Nakade, Robert Fuchs
-
Publication number: 20230275243Abstract: 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: ApplicationFiled: August 25, 2021Publication date: August 31, 2023Applicants: JTEKT CORPORATION, NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITYInventors: Takuya TSUJIGUCHI, Yasuhide TAKEDA, Motoo NAKAI, Toshiyuki SAITO, Atsushi KUBO, Mototake FURUHASHI, Ayumi NAKASONE, Atsushi NAKANE, Fumitaka ACHIWA
-
Publication number: 20230272299Abstract: 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: ApplicationFiled: July 5, 2021Publication date: August 31, 2023Applicants: 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: 11738798Abstract: 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: GrantFiled: April 23, 2020Date of Patent: August 29, 2023Assignee: JTEKT CORPORATIONInventor: Terutaka Tamaizumi
-
Patent number: 11732754Abstract: 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: GrantFiled: June 1, 2022Date of Patent: August 22, 2023Assignee: JTEKT Bearings North America LLCInventors: Yoshitaka Waseda, Trent Carpenter
-
Publication number: 20230259328Abstract: 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: ApplicationFiled: February 15, 2023Publication date: August 17, 2023Applicants: JTEKT CORPORATION, connectome.design Inc.Inventors: Hiroki UMEZAWA, Yoshiyuki SHIBATA, Takashi MATSUMOTO, Akira SATO
-
Publication number: 20230258256Abstract: 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: ApplicationFiled: February 2, 2023Publication date: August 17, 2023Applicants: JTEKT CORPORATION, NAKANISHI METAL WORKS CO., LTD.Inventors: Ayumi YAMAMORI, Shuhei YAMASHITA, Masayoshi NAKAMURA, Ryotaro TANIGUCHI
-
Patent number: 11725702Abstract: 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: GrantFiled: March 30, 2022Date of Patent: August 15, 2023Assignee: JTEKT AUTOMOTIVE NORTH AMERICA, INC.Inventors: Patrick Desing, Shun Ono
-
Patent number: 11724732Abstract: 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: GrantFiled: September 22, 2020Date of Patent: August 15, 2023Assignee: JTEKT CORPORATIONInventors: Takahiro Toko, Nobuaki Kataoka, Takafumi Yamaguchi, Yukinobu Ezaki