公开(公告)号：US20230145223A1

公开(公告)日：2023-05-11

申请号：US18064681

申请日：2022-12-12

申请人： Jilin University

发明人： Junnian WANG ,  Dongxu FU ,  Shuo ZHUANG ,  Kefu ZHU ,  Chunlin ZHANG

IPC分类号： B62D5/04 ,  B62D7/15

CPC分类号： B62D5/043 ,  B62D5/0421 ,  B62D7/1581

摘要： A dual-mode active rear-wheel steering device, including: a steering angle control motor, a speed-reduction mechanism, a differential mechanism assembly, two steering motion conversion mechanisms, a first electromagnetic clutch and a second electromagnetic clutch. An output end of the steering angle control motor is connected to the speed-reduction mechanism. The differential mechanism assembly is a bevel gear differential, in which center holes at outer ends a two half shafts are respectively provided with a raceway to form an inner cyclical ball-lead screw-nut pair with a first lead screw and a second lead screw of the steering motion conversion mechanisms. The first lead screw and the second lead screw are the same in parameters but with opposite rotation direction. The first electromagnetic clutch controls connection between a differential housing and a frame. The second electromagnetic clutch controls connection between the differential housing and the second half shaft.

公开(公告)号：US10081385B2

公开(公告)日：2018-09-25

申请号：US15376094

申请日：2016-12-12

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Yukihide Kimura ,  Yoji Kunihiro ,  Takeshi Goto

IPC分类号： B62D5/04 ,  B62D6/08 ,  B62D15/02

CPC分类号： B62D5/0463 ,  B62D5/04 ,  B62D5/0409 ,  B62D5/0421 ,  B62D5/0457 ,  B62D5/0466 ,  B62D5/0472 ,  B62D5/0481 ,  B62D5/0493 ,  B62D6/08 ,  B62D15/021 ,  B62D15/025

摘要： A steering assist device includes: a steering torque detector; a steering operation amount acquisition device; an electric power steering device; and a control device configured to calculate a target control current of the electric power steering device, to supply the control current corresponding to the target control current to the electric power steering device, to determine a situation of steering operation of a driver, and to make a current component corresponding to the target inertia compensation assist torque in the target control current smaller when it is determined that the steering operation is turn-back steering with acceleration and deceleration than when it is determined that the steering operation of the driver is not the turn-back steering with acceleration and deceleration.

公开(公告)号：US20180244306A1

公开(公告)日：2018-08-30

申请号：US15754088

申请日：2016-09-29

申请人： Mitsuba Corporation

发明人： Hiroaki Tanikawa ,  Shuichi Matsuhashi ,  Toru Furusawa ,  Tamotsu Iwazaki

IPC分类号： B62D5/04 ,  B62D6/00

CPC分类号： B62D5/0463 ,  B62D5/0421 ,  B62D5/046 ,  B62D5/0481 ,  B62D6/00

摘要： An electric power steering device includes an electric motor driven by electric power from a power supply and configured to apply an assisting force to a steering shaft, a booster circuit connected to the power supply and configured to supply a boosting voltage to the electric motor, and a control device configured to manage at least one of a boosting duration time that is a continuous operation time of the booster circuit and a boosting prohibition time that is a continuous stoppage time of the booster circuit on the basis of a boosted electric power value during an operation of the booster circuit.

公开(公告)号：US20180244305A1

公开(公告)日：2018-08-30

申请号：US15904934

申请日：2018-02-26

申请人： China Automotive Systems, Inc.

发明人： Haimian Cai ,  Tianyi Qiu ,  Siqi Zuo

IPC分类号： B62D5/04 ,  F16H25/22 ,  F16H25/20

CPC分类号： B62D5/0448 ,  B62D5/001 ,  B62D5/04 ,  B62D5/0403 ,  B62D5/0421 ,  B62D5/0463 ,  F16C1/02 ,  F16H25/205 ,  F16H25/2204 ,  F16H25/2214 ,  F16H2025/2031 ,  F16H2025/2075 ,  F16H2025/2084 ,  F16H2025/2087 ,  F16H2025/209

摘要： A worm shaft (46) has a first end section (52) and a second end section (54) extending from a worm section (50). A first drive system (98) is in driving engagement with the first end section (52) of the worm shaft (46), and a second drive system (104) is in driving engagement with the second end section (54) of the worm shaft (46) for redundantly steering a vehicle. The worm section (50) of the worm shaft (46) is disposed between the first drive system (98) disposed on the first end section (52) of the worm shaft (46) and the second drive system (104) disposed on the second end section (54) of the worm shaft (46). A lost motion connection (82) is disposed between an input shaft (76) and said worm shaft (46).

公开(公告)号：US10035479B2

公开(公告)日：2018-07-31

申请号：US15521598

申请日：2016-03-15

申请人： NSK Ltd.

发明人： Daiki Orihara ,  Hiroshi Kakita ,  Osamu Kurihara ,  Daisuke Terasawa

IPC分类号： B60R16/027 ,  B62D1/187 ,  B62D1/19 ,  B62D1/184 ,  B62D5/04

CPC分类号： B60R16/027 ,  B62D1/184 ,  B62D1/185 ,  B62D1/187 ,  B62D1/192 ,  B62D5/0421

摘要： A steering apparatus (2, 202) of the invention of the present application is disclosed, which includes an electrifying plate (40, 240) secured to an inner column (11, 211) and received within a guide groove (25, 225) of an outer column (10, 210). The electrifying plate contacts an electrifying cover (15, 215) of the outer column, and configures part of an electrifying path leading to the outer column from the inner column. The invention of the present application enables a new electrifying path to be ensured, which extends from a steering wheel (101) to a car body (100).

公开(公告)号：US20180057044A1

公开(公告)日：2018-03-01

申请号：US15456264

申请日：2017-03-10

申请人： Jilin University

发明人： Bingzhao Gao ,  Haitao Ding ,  Hong Chen ,  Jianwei Zhang ,  Weinan Tao ,  Mengjian Tian

IPC分类号： B62D5/04 ,  B62D3/04 ,  B62D6/10 ,  B62D6/02 ,  B62D6/00

CPC分类号： B62D5/0484 ,  B62D3/04 ,  B62D5/001 ,  B62D5/003 ,  B62D5/0418 ,  B62D5/0421 ,  B62D5/043 ,  B62D5/046 ,  B62D5/0478 ,  B62D6/002 ,  B62D6/02 ,  B62D6/10 ,  B62D7/148 ,  B62D7/1509

摘要： An independent steering mechanism of controllable hydraulic locking type for left and right wheels is provided. The independent steering mechanism includes a power steering mechanism, a steering drive mechanism, a hydraulic locking mechanism and an electronic control unit. Power of the left and right steering motors flows through the worm, the worm gear, the gear to drive left and right racks to translate. Outer ends of the left and right racks are connected to left and right tie rods via spherical hinges respectively. Inner ends of the left and right racks are connected to a piston rod and a cylinder barrel via spherical hinges respectively. A left chamber and a right chamber in the hydraulic cylinder are connected to an oil reservoir via an electro-hydraulic valve. The left and right steering motor controllers for the left and right steering motor and the electro-hydraulic valve controller are communicated via CAN bus.

公开(公告)号：US20180001845A1

公开(公告)日：2018-01-04

申请号：US15521598

申请日：2016-03-15

申请人： NSK Ltd.

发明人： Daiki ORIHARA ,  Hiroshi KAKITA ,  Osamu KURIHARA ,  Daisuke TERASAWA

IPC分类号： B60R16/027 ,  B62D1/19 ,  B62D1/187 ,  B62D5/04 ,  B62D1/184

CPC分类号： B60R16/027 ,  B62D1/184 ,  B62D1/185 ,  B62D1/187 ,  B62D1/192 ,  B62D5/0421

摘要： A steering apparatus (2, 202) of the invention of the present application is disclosed, which includes an electrifying plate (40, 240) secured to an inner column (11, 211) and received within a guide groove (25, 225) of an outer column (10, 210). The electrifying plate contacts an electrifying cover (15, 215) of the outer column, and configures part of an electrifying path leading to the outer column from the inner column. The invention of the present application enables a new electrifying path to be ensured, which extends from a steering wheel (101) to a car body (100).

公开(公告)号：US20170355394A1

公开(公告)日：2017-12-14

申请号：US15611269

申请日：2017-06-01

申请人： JTEKT CORPORATION

发明人： Hidenori ITAMOTO ,  Naoki YAMANO

IPC分类号： B62D5/04

CPC分类号： B62D5/0463 ,  B62D5/0421 ,  B62D5/0442 ,  B62D5/0481 ,  B62D5/0484 ,  B62D5/0493

摘要： There is provided a steering control device that can control even when a systematic error has occurred. An update amount calculation processing circuit manipulates a control angle in accordance with an update amount in order to control steering torque, which is obtained by subjecting the magnitude of steering torque to a decrease correction by a threshold, to target torque through feedback control. The control angle is used to convert a current command value to a value in a fixed coordinate system or the like. The update amount is subjected to a guarding process in accordance with the steering torque by a torque-based guarding processing circuit, and determined as a final update amount for the control angle. The torque-based guarding processing circuit performs the guarding process on the update amount such that the update amount is in an allowable range that matches the steering torque.

公开(公告)号：US20170349211A1

公开(公告)日：2017-12-07

申请号：US15533419

申请日：2015-12-07

申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.

发明人： Kohtaro SHIINO

IPC分类号： B62D15/02 ,  B62D5/04 ,  G01D5/245

CPC分类号： B62D15/0235 ,  B62D5/04 ,  B62D5/0421 ,  B62D5/0454 ,  B62D5/0463 ,  G01B7/30 ,  G01D5/145 ,  G01D5/20 ,  G01D5/245 ,  G01D5/2451

摘要： An object of the present invention is to provide a rotational angle detection apparatus and a power steering apparatus capable of detecting a rotational angle of a rotational shaft eve when a failure has occurred in a magnetic detection portion. One aspect of the present invention is a rotational angle detection apparatus including a first magnetic detection portion provided on a rotational axis and configured to detect a change in a magnitude or a direction of a magnetic field, and a second magnetic detection portion provided on the rotational axis and disposed at a position offset from the first magnetic detection portion in a direction along the rotational axis. The second magnetic detection portion is configured to detect the change in the magnitude or the direction of the magnetic field. The rotational angle detection apparatus further includes a magnet provided on an outer side in a radial direction of the rotational axis with respect to the first magnetic detection portion and the second magnetic detection portion and disposed in such a manner that an N-pole and an S-pole face each other around the rotational axis. The magnet is provided rotatably relative to the first magnetic detection portion and the second magnetic detection portion. The rotational angle detection apparatus is configured to detect a rotational angle of the magnet relative to the first magnetic detection portion and the second magnetic detection portion based on signals output from the first magnetic detection portion and the second magnetic detection portion.

公开(公告)号：US20170341680A1

公开(公告)日：2017-11-30

申请号：US15598884

申请日：2017-05-18

申请人： JTEKT CORPORATION

发明人： Hiroshi YANO ,  Hiroshi NEGORO

IPC分类号： B62D5/04 ,  B62D3/12

CPC分类号： B62D5/04 ,  B62D3/12 ,  B62D5/0421

摘要： An electric power steering system includes a rack housing configured to accommodate a rack shaft, a pinion shaft meshed with the rack shaft, a speed-reducer including a worm wheel connected to a portion of the second pinion shaft protruding from the rack housing, a speed-reducer housing configured to accommodate the speed-reducer, and a seal member having an annular shape. The seal member is disposed closer to the second pinion gear than the worm wheel is, in the speed-reducer housing. The sear member seals a clearance between the second pinion shaft and the speed-reducer housing.