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公开(公告)号：US20240010267A1
公开(公告)日：2024-01-11
申请号：US18346639
申请日：2023-07-03
Applicant: JTEKT CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： 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
CPC classification number: B62D5/006 , B62D5/0466 , B62D6/008
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.
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公开(公告)号：US20170338713A1
公开(公告)日：2017-11-23
申请号：US15600471
申请日：2017-05-19
Applicant: DENSO CORPORATION
Inventor： Hiroki TOMIZAWA , Koji ISOGAI
IPC: H02K5/173 , F16C33/44 , H02K5/06 , F16C33/82 , H02K5/128 , H02K5/16 , F16C33/38 , F16C33/56 , F16C33/76
CPC classification number: H02K5/1732 , F16C19/06 , F16C19/54 , F16C25/083 , F16C33/38 , F16C33/445 , F16C33/565 , F16C33/76 , F16C33/82 , F16C2380/26 , H02K5/06 , H02K5/10 , H02K5/128 , H02K5/16 , H02K5/173 , H02K5/24 , H02K7/1004 , H02K11/33
Abstract: An electric motor is provided which is designed to minimize a risk of corrosion or stress corrosion cracking of parts thereof and reduce mechanical vibration or noise. The electric motor includes an output shaft, a bearing which retains the output shaft, a frame, and a biasing member. The biasing member is made of austenite stainless steel and disposed between the bearing and a bottom wall of a bearing housing to elastically press the output shaft in a lengthwise direction thereof for eliminating mechanical noise arising from vibration of a rotor. The frame has a coating formed on an outer surface thereof for avoiding erosion thereof. The coating is not formed at least on a portion of the frame which faces the biasing member in order to induce sacrificial corrosion of the frame, which decelerates the corrosion of the biasing member to eliminate a risk of the stress corrosion cracking thereof.
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公开(公告)号：US20240010269A1
公开(公告)日：2024-01-11
申请号：US18348794
申请日：2023-07-07
Applicant: JTEKT CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： 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
CPC classification number: B62D5/0421 , B62D5/006 , B62D15/0245 , B62D5/0466 , B62D5/0403
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.
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公开(公告)号：US20230219618A1
公开(公告)日：2023-07-13
申请号：US18067487
申请日：2022-12-16
Applicant: Toyota Jidosha Kabushiki Kaisha , JTEKT CORPORATION , DENSO CORPORATION
Inventor： Takahito ISHINO , Masaharu YAMASHITA , Kenji SHIBATA , Yosuke YAMASHITA , Shintaro TAKAYAMA , Kazuaki IIDA , Ryo YAMAZAKI , Yuuta KAJISAWA , Kenichi ABE , Toyohiro HAYASHI , Nobuyori NAKAJIMA , Hiroyasu OTAKE , Kurumi TAZUKE , Hiroki TOMIZAWA
CPC classification number: B62D5/0496 , B62D5/046 , H02P29/68 , H02P23/14
Abstract: A steer-by-wire steering system including a steering device including a steering motor and a controller configured to supply a steering current to the steering motor based on a steering request. The controller includes a plurality of microcomputers, a plurality of drive circuits, and a plurality of temperature sensors. When a detection temperature difference that is a difference between detection temperatures of any two of the plurality of temperature sensors is greater than a predetermined threshold, each of the plurality of microcomputers executes an independent calculation control to independently calculate and set a current limit value, which is an upper limit value of the steering current, based on a detection temperature of one of the plurality of temperature sensors corresponding to itself, irrespective of detection temperatures of one or more of the plurality of temperature sensors other than the one of the plurality of temperature sensors corresponding to itself.
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公开(公告)号：US20230131995A1
公开(公告)日：2023-04-27
申请号：US17970789
申请日：2022-10-21
Applicant: JTEKT CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： Takashi KOUDAI , Yuji FUJITA , Yugo NAGASHIMA , Yuuta KAJISAWA , Kazuma HASEGAWA , Masaharu YAMASHITA , Yosuke YAMASHITA , Shintaro TAKAYAMA , Hiroki TOMIZAWA , Nobuyori NAKAJIMA
IPC: B62D5/04
Abstract: A steering control device includes a controller including a drive circuit that performs action for supplying, to a motor, electric power supplied by being connected to at least one of a first and a second power supply. When a connection state of the drive circuit is a state in which electric power is supplied from the first power supply, the connection state is switched by a power supply device to transition to a second state in which electric power is supplied from the second power supply when an abnormality of the first power supply is detected. Moreover, the controller starts an output limiting process of limiting torque outputtable by the motor as compared with before the abnormality of the first power supply is detected, after the abnormality is detected and before switching of the connection state is completed.
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Patent Agency Ranking
公开(公告)号：US20230117373A1
公开(公告)日：2023-04-20
申请号：US17966325
申请日：2022-10-14
Applicant: JTEKT CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： Yugo NAGASHIMA , Yuji FUJITA , Kazuma HASEGAWA , Yuuta KAJISAWA , Takashi KOUDAI , Masaharu YAMASHITA , Yosuke YAMASHITA , Shintaro TAKAYAMA , Kazuaki IIDA , Hiroyuki KATAYAMA , Hiroki TOMIZAWA , Nobuyori NAKAJIMA
Abstract: 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.
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公开(公告)号：US20240025471A1
公开(公告)日：2024-01-25
申请号：US18354743
申请日：2023-07-19
Applicant: JTEKT CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： 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
IPC: B62D5/04
CPC classification number: B62D5/046
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.
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公开(公告)号：US20170104383A1
公开(公告)日：2017-04-13
申请号：US15281536
申请日：2016-09-30
Applicant: DENSO CORPORATION , ASMO CO., LTD.
Inventor： Katsuya FUJISAKI , Koji ISOGAI , Hiroki TOMIZAWA , Makoto TANIGUCHI , Masahiro GOTO
CPC classification number: H02K5/124 , B62D5/0403 , B62D5/0424 , B62D5/0448 , F16C25/083 , F16H1/00 , H02K5/16 , H02K5/1732 , H02K7/083 , H02K7/116
Abstract: A drive device includes a shaft rotatably supported by a first bearing and a second bearing. The first bearing is disposed in a shaft hole of an output frame end. The second bearing is disposed in a bearing box of an opposite-to-output frame end. An oil seal is fixed in the shaft hole and is closer to an output end than the first bearing is, and is in sliding contact with an outer circumference of the shaft. A biasing member is housed in the bearing box and biases an outer race of the second bearing toward the output end. Accordingly, a deflection amount and a bend amount of the shaft at the location where the oil seal is disposed may be reduced.
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公开(公告)号：US20170066471A1
公开(公告)日：2017-03-09
申请号：US15189174
申请日：2016-06-22
Applicant: DENSO CORPORATION
Inventor： Hiroki TOMIZAWA , Koji ISOGAI
CPC classification number: B62D5/0424 , H02K5/10 , H02K7/1004 , H02K2213/03
Abstract: A driving unit includes a stator, a rotor, a shaft, a housing, a protrusion, a small pulley, and a sealing member. The rotor is rotatably disposed relative to the stator. The shaft rotates together with the rotor. The housing houses the stator and the rotor. The protrusion protrudes from an outer surface of the housing toward an outside of the housing. The outer surface is positioned at one side of the housing in an axial direction of the rotor. The small pulley is disposed at an end of the shaft protruding toward the outside of the housing through a hole formed in the protrusion. The small pulley is cylindrical shaped. The sealing member seals a space between an inner surface of the hole of the protrusion and an outer surface of the shaft.
Abstract translation: 驱动单元包括定子，转子，轴，壳体，突起，小滑轮和密封构件。 转子相对于定子可旋转地设置。 轴与转子一起旋转。 外壳容纳定子和转子。 突出部从壳体的外表面向壳体的外侧突出。 外表面沿着转子的轴向位于壳体的一侧。 小滑轮设置在轴的端部，通过形成在突起中的孔向壳体的外部突出。 小滑轮是圆柱形的。 密封构件密封凸起孔的内表面和轴的外表面之间的空间。
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公开(公告)号：US20150222156A1
公开(公告)日：2015-08-06
申请号：US14609517
申请日：2015-01-30
Applicant: DENSO CORPORATION
Inventor： Hiroki TOMIZAWA , Makoto TANIGUCHI , Hiroshi IMAI
IPC: H02K5/10
Abstract: A seal member of a driver apparatus contacts a case and a first frame end. The seal member has an opening in which a lead wire is inserted and an inside wall surface of the opening contacts the lead wire. Further, the seal member is made of a stretchable material, and is held in position only by a binding force between the case and the first frame end. The seal member is fixedly held by the first frame end and the case after an insertion of the lead wire in the opening and disposition on the fixing member opposing face. Therefore, an installation of the seal member is performed by an inserting the lead wire into the opening and a positioning the seal member on the case.
Abstract translation: 驱动器装置的密封构件接触壳体和第一框架端。 密封构件具有插入引线的开口，并且开口的内壁表面与引线接触。 此外，密封构件由可拉伸材料制成，并且仅通过壳体和第一框架端部之间的结合力保持在适当位置。 密封构件在将引线插入开口中并且配置在固定构件相对面上之后由第一框架端和外壳固定地保持。 因此，通过将引线插入开口并将密封构件定位在壳体上来进行密封构件的安装。
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