Patents Assigned to JTEKT
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Publication number: 20230130839Abstract: A steering control device includes a control circuit configured to control driving of a reaction force motor that generates steering reaction force applied to a steering wheel in which power transmission with turning wheels of a vehicle is separated. When a vehicle power source is turned on, the control circuit requests a vehicle control device to stop traveling of the vehicle when information is exchanged with the vehicle control device in a manner that does not follow a predetermined pattern.Type: ApplicationFiled: October 26, 2022Publication date: April 27, 2023Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATIONInventors: Yugo NAGASHIMA, Yuji FUJITA, Yuuta KAJISAWA, Kazuma HASEGAWA, Takashi KOUDAI, Masaharu YAMASHITA, Yosuke YAMASHITA, Shintaro TAKAYAMA, Hiroki TOMIZAWA
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Publication number: 20230130446Abstract: A steer-by-wire steering system includes a controller configured to execute a steering control process and a determining process of determining a converted operation amount by converting an actual wheel steering amount to an operation amount of an operation member based on an inverse of a steering gear ratio. In the determining process, when the steering gear ratio abruptly changes, the controller converts a gap of the converted operation amount generated at a time point of occurrence of the abrupt change to a gap of the wheel steering amount to grasp a converted steering amount offset value. While gradually decreasing the converted steering amount offset value, the controller thereafter re-converts the converted steering amount offset value to the gap of the converted operation amount based on the inverse of the steering gear ratio to determine a converted operation amount correction value and corrects the converted operation amount based on the value.Type: ApplicationFiled: October 19, 2022Publication date: April 27, 2023Applicants: Toyota Jidosha Kabushiki Kaisha, JTEKT CORPORATIONInventors: Tomoyuki IIDA, Yuko Otsuka, Atsushi Ishihara, Junya Miyake
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Publication number: 20230126878Abstract: A steering control device includes a controller configured to control driving of a motor that generates a torque. The torque is a torque applied to a steering mechanism of a vehicle using electric power from at least any one of an in-vehicle main power source and an auxiliary power source that backs up the main power source. The controller is configured to wait for the auxiliary power source to be charged to an extent that the main power source is able to be backed up and to permit the vehicle to travel when the controller is activated with an activation operation for the vehicle as a trigger and transitions to a state where control of the motor is executable.Type: ApplicationFiled: October 20, 2022Publication date: April 27, 2023Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takashi KOUDAI, Yuji FUJITA, Yugo NAGASHIMA, Yuuta KAJISAWA, Kazuma HASEGAWA, Yosuke YAMASHITA, Shintaro TAKAYAMA
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Publication number: 20230125769Abstract: A control device includes control circuits of a plurality of systems. When a transition condition is established, the control circuits of the systems make transition of a driving mode from a first driving mode to a second driving mode, and when a return condition is established in a state in which the driving mode has transitioned to the second driving mode, the control circuits of the systems make transition of the driving mode from the second driving mode to the first driving mode while gradually changing the current command values of the control circuits’ own systems toward the current command values before the adjustment.Type: ApplicationFiled: October 24, 2022Publication date: April 27, 2023Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATIONInventors: Kazuma HASEGAWA, Yuji FUJITA, Takashi KODERA, Isao NAMIKAWA, Atsushi ISHIHARA, Masaharu YAMASHITA, Kenji SHIBATA, Yuko GOTO, Hiroki TOMIZAWA, Nobuyori NAKAJIMA
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Patent number: 11635135Abstract: A plug for closing an opening of a casing, the plug including a solid hub, with central axis, as well as a retaining member which ensures the axial attachment of the plug in the opening, the plug including a play-compensating carriage, which is distinct from the hub and which is movably mounted on a guiding support borne by the hub, the guiding support being arranged in such a way as to axially retain the carriage and to guide the relative movement of the carriage with respect to the hub in a direction termed the “play-compensating direction” transverse to the central axis, a spring-type resilient member, arranged between the guiding support and the carriage, and an orientating member arranged so as to orientate the plug, and consequently the play-compensating direction defined by the guiding support, in azimuth around the central axis, according to a predetermined orientation with respect to the casing.Type: GrantFiled: May 25, 2018Date of Patent: April 25, 2023Assignee: JTEKT EUROPEInventor: Mickael Guerin
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Patent number: 11633318Abstract: An assist device includes a first body-worn unit that is worn on at least shoulders or a chest of a user; a second body-worn unit that is worn on each of right and left legs or a waist of the user; a belt body provided to extend along a back side of the user, from the first body-worn unit to the second body-worn unit; an actuator provided in the first body-worn unit or the second body-worn unit and allows a part of the belt body to be reeled and unreeled; a battery configured to supply electricity to the actuator; and a controller configured to control the actuator. When a remaining charge level of the battery has decreased to a predetermined set value, the controller executes a vibrating motion process of causing the actuator to perform a vibrating motion of intermittently repeating reeling of a minute amount of the belt body.Type: GrantFiled: May 21, 2021Date of Patent: April 25, 2023Assignee: JTEKT CORPORATIONInventors: Hiromichi Ohta, Kazuyoshi Ohtsubo, Yoshitaka Yoshimi, Tomoki Arai
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Publication number: 20230117373Abstract: A control device for a vehicle includes a plurality of control circuits configured to control a control object by starting in response to powering-on of a vehicle and to perform power latch control for continuing to be supplied with electric power in a predetermined period in response to powering-off of the vehicle. Each of the control circuits is configured to perform starting after all of the control circuits have recognized the powering-on of the vehicle in a case where the vehicle is powered on while the power latch control is being performed after the vehicle has been powered off.Type: ApplicationFiled: October 14, 2022Publication date: April 20, 2023Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATIONInventors: Yugo NAGASHIMA, Yuji FUJITA, Kazuma HASEGAWA, Yuuta KAJISAWA, Takashi KOUDAI, Masaharu YAMASHITA, Yosuke YAMASHITA, Shintaro TAKAYAMA, Kazuaki IIDA, Hiroyuki KATAYAMA, Hiroki TOMIZAWA, Nobuyori NAKAJIMA
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Publication number: 20230119506Abstract: A control device for a vehicle includes a plurality of control circuits configured to control a control object in cooperation or in combination by starting with powering-on of a vehicle as a trigger. Each of the plurality of control circuits is configured to perform a synchronization process and power latch control. Each of the plurality of control circuits is configured to maintain the operation mode immediately before the vehicle has been powered off in a period in which the power latch control is being performed. Each of the plurality of control circuits is configured not to perform the synchronization process in a predetermined period when the vehicle has been powered on.Type: ApplicationFiled: October 14, 2022Publication date: April 20, 2023Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATIONInventors: Kazuma HASEGAWA, Yuji FUJITA, Yugo NAGASHIMA, Masaharu YAMASHITA, Shintaro TAKAYAMA, Yosuke YAMASHITA, Hiroki TOMIZAWA, Nobuyori NAKAJIMA
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Patent number: 11628878Abstract: A driving assistance control device outputs a driving assistance command value to a steering control device as information indicating a target course that is generated on the basis of the detection result of a vehicle-mounted sensor. The driving assistance command value is output as a torque component or an angle component depending on the design of the driving assistance control device. In response, processing in which a driving assistance command value input from the exterior of the steering control device is used as input for angle control processing or input for torque control processing within an assist command value calculation unit is performed by a microcomputer as assistance command value input processing by an assistance command value input processing unit.Type: GrantFiled: October 23, 2018Date of Patent: April 18, 2023Assignee: JTEKT CORPORATIONInventors: Shigeto Matsuo, Terutaka Tamaizumi, Akihiko Nishimura
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Patent number: 11632013Abstract: A control device includes a first substrate provided with a chip electronic component; a second substrate having a surface provided with electronic components including a tall component taller than the chip electronic component, the surface of the second substrate facing a surface of the first substrate that is provided with the chip electronic component; and a heat sink disposed between the first substrate and the second substrate. The heat sink includes a component receiving portion and a heat dissipation portion, the component receiving portion being configured to receive the tall component, the heat dissipation portion being configured to perform heat exchange between the first substrate and the second substrate, and the component receiving portion and the heat dissipation portion being provided so as not to overlap with each other as viewed in a facing direction in which the first substrate and the second substrate face each other.Type: GrantFiled: September 30, 2020Date of Patent: April 18, 2023Assignee: JTEKT CORPORATIONInventors: Yuki Hayashi, Yuto Sato
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Patent number: 11624408Abstract: A shaft coupling includes a first coupling member, a second coupling member, and a cushioning member. The first coupling member includes first protrusions. The second coupling member includes second protrusions. The cushioning member includes a plurality of radiating portions. When the first coupling member and the second coupling member are arranged coaxially and the first coupling member and the second coupling member are in an unloaded state, predetermined paired facing surfaces have a minimum clearance angle present on a radially outer side with respect to a center of the radiating portion in a radiating direction. The predetermined paired facing surfaces are at least one of first paired facing surfaces and second paired facing surfaces.Type: GrantFiled: February 5, 2021Date of Patent: April 11, 2023Assignee: JTEKT CORPORATIONInventors: Naofumi Kawamura, Hideyuki Honkado
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Patent number: 11623289Abstract: A gear machining support device supports machining when a tooth of a gear is machined on a workpiece by relatively moving the workpiece and a machining tool while synchronizing rotations of the workpiece and the machining tool around respective center axis lines thereof. The gear machining support device includes: a target modification amount storage unit configured to store target modification amounts of at least two of modification elements of a tooth surface shape of the tooth of the gear, the modification elements including crowning, bias, a helix angle, a pressure angle, and a tooth profile roundness; and a correction amount determination unit configured to determine a correction amount of a machining control element during a machining operation such that the at least two of modification elements approximate the respective target modification amounts stored in the target modification amount storage unit.Type: GrantFiled: July 6, 2020Date of Patent: April 11, 2023Assignee: JTEKT CORPORATIONInventors: Katsuhito Yoshinaga, Hideki Shibata
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Patent number: 11623681Abstract: A method for fixing a cover on an orifice of a power steering system including a step of approaching the cover to the orifice, characterized in that it includes a step of inserting at least one extension of the cover in at least one recess positioned next to the orifice and a step of deforming the at least one elongation of the cover.Type: GrantFiled: May 26, 2020Date of Patent: April 11, 2023Assignee: JTEKT EUROPEInventors: Mickael Guerin, Sylvain Grosso
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Patent number: 11618499Abstract: A method for controlling a power steering system of a vehicle, having a steering wheel, and an inverter powering an assist motor, when a short-circuit failure is detected between a phase of the assist motor and an electric line of the inverter, wherein it includes:—a configuration step intended to determine, for a magnetic field of the assist motor, a controllable zone and a non-controllable zone, —a step of compensating for a space-average brake torque in the controllable zone.Type: GrantFiled: February 21, 2019Date of Patent: April 4, 2023Assignee: JTEKT EUROPEInventor: Arnaud Bouchet
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Patent number: 11617701Abstract: An assist device includes a body mounting fixture, an actuator, an operation state detector, and a controller. The controller is configured to control drive of the actuator. The controller is configured to acquire an estimated posture of the wearer, which is estimated based on operation detection information detected by the operation state detector, when the actuator generates the assist torque. The controller is configured to determine whether or not the estimated posture is an unreasonable posture in which an excessive force is applied to a lower back portion.Type: GrantFiled: January 22, 2020Date of Patent: April 4, 2023Assignee: JTEKT CORPORATIONInventors: Tomoki Arai, Yoshiyuki Shibata
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Patent number: 11618495Abstract: A steering device includes: a rack shaft; a rack housing; a pinion shaft that meshes with the rack shaft; a speed reducer having a worm wheel that is coupled to the pinion shaft and a worm shaft that meshes with the worm wheel; a speed reducer housing; a motor that drives the worm shaft; a plate-shaped cover that seals an opening of the speed reducer housing; and a breather valve that is mounted on the cover in a state of penetrating through the cover. An inner surface of the cover that faces the worm wheel has an entry restricting part that restricts entry of a lubricant into the breather valve.Type: GrantFiled: December 22, 2020Date of Patent: April 4, 2023Assignee: JTEKT CORPORATIONInventor: Akifumi Amano
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Patent number: 11619268Abstract: A manufacturing device manufactures a bearing unit including an inner ring member outwardly fitted onto an end portion of a shaft main body of an inner shaft on one side in an axial direction and fixed by a swaged portion extending from the end portion. The manufacturing device includes: a rotating mechanism including a rotor which holds the other side of the inner shaft in the axial direction from below and rotates the inner shaft about a center axis of the inner shaft while the center axis is aligned with an up-down direction, the rotor being mounted below a processing area of the bearing unit; and a swaging mechanism mounted above the processing area and including a punch which is brought into contact with the swaged portion to plastically deform the swaged portion.Type: GrantFiled: July 10, 2018Date of Patent: April 4, 2023Assignees: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yosuke Tanaka, Masato Nakagawa, Masato Fukui, Kei Sumimoto, Mitsumoto Inoguchi, Hiroyuki Shinoda, Masahiro Kimura
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Publication number: 20230095722Abstract: There is provided a rearing apparatus for rearing an organism includes: a box-shaped rearing case; at least one perching member that is held in the rearing case and that is capable of perching the organism; and a separating member that is provided in the rearing case and that is movable along the perching member. The separating member is configured to separate the organism perched at the perching member from the perching member by the separating member moving along the perching member.Type: ApplicationFiled: February 26, 2021Publication date: March 30, 2023Applicants: JTEKT CORPORATION, Gryllus Inc.Inventors: Shigekazu KAWAI, Yasuhiro MURATA, Takashi MATSUMOTO, Takahito WATANABE, Taro MITO
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Patent number: 11613303Abstract: A turning system includes a steering wheel, a turning actuator that has an electric motor incorporated thereinto and turns turning wheels, and a control device. The control device is configured to perform: a steering operation amount calculating process of calculating a steering operation amount; an angle command value calculating process of calculating an angle command value; an angle operation amount calculating process of calculating an angle operation amount; an operation process of operating a drive circuit of the electric motor; and a correction process of correcting a parameter upstream from the angle operation amount calculating process such that a drag force resisting an operation of the steering wheel for increasing magnitude of the turning angle is applied when the magnitude of the turning angle is equal to or greater than a turning angle threshold value.Type: GrantFiled: April 15, 2020Date of Patent: March 28, 2023Assignee: JTEKT CORPORATIONInventor: Terutaka Tamaizumi
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Patent number: 11608110Abstract: A steering system to steer wheels by a movement of a steering shaft, including: the steering shaft; an electric motor; a converter configured to convert a rotational motion of the motor into the movement of the steering shaft; a motor rotation angle obtainer configured to obtain a motor rotation angle from a zero point position; a movement-amount-related-amount obtainer configured to obtain a movement-amount-related amount that is a movement amount of the steering shaft from a neutral position or a physical amount in a one-to-one correspondence with the movement amount; and a controller including a malfunction detector configured to detect a presence or absence of a malfunction of the converter in a mode that differs depending on a temperature state of the steering system, based on the motor rotation angle from the zero point position obtained by the motor rotation angle obtainer and the movement-amount-related amount obtained by the movement-amount-related-amount obtainer.Type: GrantFiled: September 8, 2021Date of Patent: March 21, 2023Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, JTEKT CorporationInventors: Takuji Yoshida, Masahide Nitano, Isao Namikawa, Koji Anraku