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11. 发明专利

JP2008007001A Steering device of vehicle 有权
标题翻译：车辆转向装置
公开(公告)号：JP2008007001A
公开(公告)日：2008-01-17
申请号：JP2006180717
申请日：2006-06-30
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： NIWA SATORU , NISHIKAWA TOMOHISA
IPC分类号： B62D6/00 , B62D5/04 , B62D7/14 , B62D101/00 , B62D113/00 , B62D137/00
摘要： PROBLEM TO BE SOLVED: To improve the moving state of a vehicle for an operation of a steering wheel and obtain an excellent steering feeling. SOLUTION: A main ECU100 inputs a steering wheel steering angle δ and a vehicle speed V from a steering angle sensor 25 and a vehicle speed sensor 90, and calculates a target motion state amount (a target yaw rate γ* and a vehicle body slip angle β*). In the calculation, the target motion state amount is calculated so as to satisfy the target motion performance of a predetermined vehicle to eliminate a phase difference between the steering wheel steering angle δ and lateral forces of front wheels Wfl, Wfr, or to eliminate a phase difference between the steering wheel steering angle δ and the turning angle of the front wheel. The main ECU100 calculates a target front wheel turning angle δf* and a target rear wheel turning angle δr* based on the target motion state amount, and a front wheel motor ECU61 and a rear wheel motor ECU71 turning-controls the front wheels Wfl, Wfr and rear wheels Wrl, Wrr to the target front wheel turning angle δf and the target rear wheel turning angle δr. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了改善用于方向盘操作的车辆的移动状态并获得优良的转向感。解决方案：主ECU100从转向角传感器25和车速传感器90输入方向盘转向角δ和车速V，并计算目标运动状态量（目标横摆率γ*和车辆身体滑移角β*）。在计算中，计算目标运动状态量，以满足预定车辆的目标运动性能，以消除方向盘转向角δ与前轮侧向力Wfl，Wfr之间的相位差，或者消除相位方向盘转向角δ与前轮转向角之间的差异。主ECU100基于目标运动状态量计算目标前轮转向角δf*和目标后轮转向角δr*，转向前轮Wfl，Wfr的前轮电动机ECU61和后轮电动机ECU71 后轮Wr1，Wrr到目标前轮转向角δf和目标后轮转向角δr。版权所有（C）2008，JPO＆INPIT

12. 发明专利

JP2007083770A Steering control device for vehicle 有权
标题翻译：车辆转向控制装置
公开(公告)号：JP2007083770A
公开(公告)日：2007-04-05
申请号：JP2005272422
申请日：2005-09-20
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： NISHIKAWA TOMOHISA , NIWA SATORU
IPC分类号： B62D6/00 , B62D5/04 , B62D7/14 , B62D101/00 , B62D111/00 , B62D113/00 , B62D119/00 , B62D137/00
摘要： PROBLEM TO BE SOLVED: To provide a steering control device for a vehicle improved in steering feeling when turning by performing steering assist in consideration of the relation between the steering torque and lateral acceleration. SOLUTION: The steering control device for a vehicle is appropriately used to separately control steering of front wheels and rear wheels of the vehicle. Actually, a steering control means performs control for separately steering the front wheels and the rear wheels, and a steering assist control means performs control for steering assist on the basis of the assist characteristic satisfied by the steering torque and the assist torque. In detail, the steering assist control means has an assist characteristic correcting means for correcting assist characteristic to maintain constant relation between the steering torque and the lateral acceleration during the steering operation. With this structure, the steering control device for a vehicle can maintain constant relation between the steering torque and the lateral acceleration independently of turning condition, and steering feeling when turning can be improved. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种考虑到转向转矩和横向加速度之间的关系，通过执行转向辅助来转动时改善转向感的车辆转向控制装置。解决方案：用于车辆的转向控制装置适用于分别控制车辆的前轮和后轮的转向。实际上，转向控制装置执行用于分别转向前轮和后轮的控制，并且转向辅助控制装置基于由转向转矩和辅助转矩满足的辅助特性来执行转向辅助控制。详细地说，转向辅助控制装置具有辅助特性校正装置，用于在转向操作期间校正辅助特性以保持转向转矩和横向加速度之间的恒定关系。利用这种结构，车辆的转向控制装置可以独立于转弯状态而保持转向转矩和横向加速之间的恒定关系，并且可以提高转弯时的转向感。版权所有（C）2007，JPO＆INPIT

13. 发明专利

JP2006315514A Steering control device for vehicle 有权
标题翻译：车辆转向控制装置
公开(公告)号：JP2006315514A
公开(公告)日：2006-11-24
申请号：JP2005139673
申请日：2005-05-12
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： NISHIKAWA TOMOHISA , NIWA SATORU
IPC分类号： B62D6/00 , B62D101/00 , B62D111/00 , B62D113/00 , B62D137/00
摘要： PROBLEM TO BE SOLVED: To provide a steering control device for a vehicle capable of appropriately switching a control rule for a steering control based on the road condition and traveling condition ahead of the vehicle. SOLUTION: The steering control device for the vehicle independently steers and controls respective front wheels and rear wheels of the vehicle. A control rule change means changes the control rule for controlling the steering angle of the front wheel and the steering angle of the rear wheel by a front road condition recognition means and a traveling condition detection means based on an estimated traveling road. Specifically, when the traveling road is a straight road or the road on which the vehicle can run at high speed, the control rule change means changes to the control rule where a vehicle body lateral acceleration and a handle angle become a proportional relationship. The rise of the lateral acceleration with respect to a steering wheel operation during traverse movement such as a lane change can be accelerated thereby, and a yaw rate can be reduced. Therefore, safety and moving performance during the lateral movement can be improved by the steering control device of the vehicle. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够根据车辆前方的道路状况和行驶状况适当地切换用于转向控制的控制规则的车辆用转向控制装置。解决方案：用于车辆的转向控制装置独立地转向和控制车辆的前轮和后轮。控制规则改变装置基于估计的行驶道路改变用于控制前轮的转向角度和后轮的转向角度的控制规则，其由前道路状况识别装置和行驶状态检测装置进行。具体而言，当行驶道路是直行道路或高速行驶的道路时，控制规则改变装置变为车体横向加速度和手柄角度成比例关系的控制规则。可以加速横向加速度相对于诸如车道变化的横向移动期间的方向盘操作的上升，并且可以减小横摆率。因此，可以通过车辆的转向控制装置来改善横向运动时的安全性和运动性能。版权所有（C）2007，JPO＆INPIT

14. 发明专利

JPH0761360A HYDRAULIC RELIEF DEVICE FOR HYDRAULIC TYPE POWER STEERING DEVICE 失效
公开(公告)号：JPH0761360A
公开(公告)日：1995-03-07
申请号：JP23404993
申请日：1993-08-25
申请人： TOYODA MACHINE WORKS LTD , TOYOTA MOTOR CORP
发明人： HAGA KYOSUKE , SUZUKI MIKIO , FUKUMURA KENICHI , OGAMI HISASHI , KAWAKAMI KIYOMINE , KISHIDA FUMIO , NISHIKAWA TOMOHISA
IPC分类号： B62D5/07 , B62D5/12 , B62D5/22
摘要： PURPOSE:To perform high-efficient relief operation by a method wherein the hydraulic relief mechanism of a power steering device is constituted to cope with variation of a gear ratio only through variation of a cam part even when the gear ratio is varied and reduce incurring of a pressure loss. CONSTITUTION:Cam parts 32 and 33 synchronized with a time when steering of a steering handle is ended are arranged to a rack shaft 3 geared with a pinion gear. A push rod 2 making contact with the cam parts 32 and 33 is provided. A flexible shaft 4 to transmit operation of the push rod 2 to the spool 11 of a relief valve 1 is provided. A cartridge type sleeve 12 to contain a spool 11 and so on is provided and the sleeve 12 is arranged to a housing 5. A port 121 connected to a feed port and a port 122 connected to a discharge port are formed in the sleeve 12. Further, a recessed groove 123 in which the head 111 of the spool 11 is contained when steering is completed is provided.

15. 发明专利

JPH0752812A LOAD REMOVING DEVICE OF POWER STEERING DEVICE 失效
公开(公告)号：JPH0752812A
公开(公告)日：1995-02-28
申请号：JP20524693
申请日：1993-08-19
申请人： TOYODA MACHINE WORKS LTD , TOYOTA MOTOR CORP
发明人： FUKUMURA KENICHI , NISHIKAWA TOMOHISA , KISHIDA FUMIO , KAWAKAMI KIYOMINE
IPC分类号： B62D5/07 , B62D5/083 , B62D5/12
摘要： PURPOSE:To prevent oil temperature rise, pump seizure, etc. by bypassing pressure oil through a bypass in a cylinder end time, in a device for dropping oil pressure assist operation when the piston of a power cylinder reaches a cylinder end. CONSTITUTION:When a steering wheel is operated, a torsion bar 10 is twisted and relative rotation is generatd between an input/output shafts 8, 6 and pressure oil from a pump 23 is supplied to a power cylinder by the operation of a servo valve 20 in response to a rotation al difference. When the input shaft 8 is rotated, the rotation of a valve body 46 is increased through a gear 40, an internal gear 48 and a gear part 44. When a wheel is steered upto the steering limit angle of a steered wheel, the communication hole 61 of the pressure removal valve part 45 of the valve body 46 coincides with the pass hole 60 of the input shaft 8 and the pressure oil from a supply port 31 is dicharged into a tank 44 through a bypass 65, a passage 38 and a discharge port 55 from a ring shape groove 62, the communication hole 61 and the pass hole 60 of the input shaft 8 and then temperature rise, etc., are prevented.

16. 发明专利

JPH06239251A POWER STEERING DEVICE 失效
公开(公告)号：JPH06239251A
公开(公告)日：1994-08-30
申请号：JP2925393
申请日：1993-02-18
申请人： TOYODA MACHINE WORKS LTD , TOYOTA MOTOR CORP
发明人： FUKUMURA KENICHI , OGAMI HISASHI , HARADA MOTOO , NISHIKAWA TOMOHISA
IPC分类号： B62D5/07
摘要： PURPOSE:To allow pressure to be relieved without any effect upon various factors of gears at the time of depressurization in a power steering device where hydraulic pressure assisting action of a powercylinder is caused to be lowered at the time of turning a steering wheel to an allowable steering limit angle. CONSTITUTION:A threaded section 27 is formed on the outer surface of an input shaft 2, and an end detection ring 28 is screwed to the section 27 is such a way as to be slidable but incapable of turning in the axial direction of the shaft 2. A cam section 30 having a tapered surface is provided at both ends of the external surface of the ring 28. Also, a housing 1 is provided with a bypass passage 41 bypassing a feed port 15 and an exhaust port 25 for supplying and delivering the pressure oil of a servo valve 7. In addition, a valve cylinder 33 and a spool valve 32 with a ball 35 fixed as a cam follower are provided in the bypass passage 41.

17. 发明专利

JPH06183359A OIL PRESSURE RELIEF MECHANISM FOR POWER STEERING DEVICE 失效
公开(公告)号：JPH06183359A
公开(公告)日：1994-07-05
申请号：JP35515192
申请日：1992-12-17
申请人： TOYODA MACHINE WORKS LTD , TOYOTA MOTOR CORP
发明人： SUZUKI MIKIO , FUKUMURA KENICHI , OGAMI HISASHI , HARADA MOTOO , NISHIKAWA TOMOHISA
IPC分类号： B62D5/07 , B62D5/12 , B62D5/22
摘要： PURPOSE:To cope with factor change such as the change of a gear ratio by the simple change of parts or the like in the oil pressure relief mechanism for a power steering. CONSTITUTION:An input shaft 2 forming a servo valve is provided with a worm 23. A cylindrical sleeve 11 is provided at a part of a housing 5 and near the part provided with the worm 23. This sleeve 11 is provided with communicating passages 111, 111' connected to a supply port 51 and a discharge port 52. A shaft 12 with a worm wheel 13 to be meshed with the worm 23 is provided in the sleeve 11. The outer peripheral part of the shaft 12 is provided with cutout grooves 121 in such a way as to correspond to the communicating passages 111, 111'. The change of a steering system can be thereby coped with by changing the width of the cutout grooves 121 provided on the shaft 12. The shafts 12 with different groove widths are therefore prepared, and the factor change can be coped with only by changing these shafts 12.

18. 发明专利

JP2007001365A STEERING CONTROLLING DEVICE OF VEHICLE 审中-公开
公开(公告)号：JP2007001365A
公开(公告)日：2007-01-11
申请号：JP2005181690
申请日：2005-06-22
申请人： TOYOTA MOTOR CORP
发明人： NISHIKAWA TOMOHISA , NIWA SATORU
IPC分类号： B62D6/00 , B62D7/14 , B62D101/00 , B62D113/00 , B62D117/00
摘要： PROBLEM TO BE SOLVED: To provide a steering controlling device of a vehicle capable of improving traveling stability and riding comfort at the time of turning by controlling steering in consideration of a moment center of yawing. SOLUTION: This steering controlling device of a vehicle is suitably used for independently controlling steering of front and rear wheels of the vehicle. Moment center selection means selects a position to be a moment center of yawing, i.e., a position on a plane including the vehicle to have a lateral speed of "0" at the time of turning. Target vehicle body slip angle calculation means calculates a target vehicle body slip angle in a manner that the position selected by the moment center selection means is a moment center of yawing. Steering angle calculation means calculates a steering angle of the front wheel and a steering angle of the rear wheel based on the calculated target vehicle body slip angle. According to the steering controlling device of the vehicle, the moment center is not moved by change of a vehicle speed and the like at the time of turning, i.e., the moment center is fixed to an identical position, so as to improve vehicle stability and riding comfort at the time of turning. COPYRIGHT: (C)2007,JPO&INPIT

19. 发明专利

JPH05310137A 失效
公开(公告)号：JPH05310137A
公开(公告)日：1993-11-22
申请号：JP11747892
申请日：1992-05-11
申请人： TOYOTA MOTOR CORP
发明人： NISHIKAWA TOMOHISA
IPC分类号： B62D5/12
摘要： PURPOSE:To enable mounting an end pressure releasing valve to the inside of a power steering device in a simple manner. CONSTITUTION:An end pressure releasing valve 30 for opening and closing an oil passage between an upstream side of a control valve and an oil chamber of a power cylinder 10 is mounted to a through-hole 10a portion provided near each end thereof. In this end pressure releasing valve 30, a ball 36 is seated on a valve seat 35a1 within a union volt 31 fixed to an outer-peripheral surface of the power cylinder 10 through the urging force of a disc spring 37 via a retainer 41 and a semi-spherical portion 42a of a lever 42 to thereby close the oil passage, and this ball is rotatably supported by the semi-spherical portion 42a of the lever 42 is rotatably supported, the lever 42 being carried, at its fore end, into an oil chamber 13a via the through hole 10a so as to be engageable with a piston 12. When the piston 12 presses the lever 42, this lever 42 is rotated to release the seating of the ball 36 on the valve seat 35a1.

20. 发明专利

JP2006347197A STEERING CONTROL DEVICE OF VEHICLE 审中-公开
公开(公告)号：JP2006347197A
公开(公告)日：2006-12-28
申请号：JP2005172083
申请日：2005-06-13
申请人： TOYOTA MOTOR CORP
发明人： NISHIKAWA TOMOHISA , NIWA SATORU
IPC分类号： B62D6/00 , B60W40/101 , B60W40/103 , B62D7/14 , B62D101/00 , B62D113/00
摘要： PROBLEM TO BE SOLVED: To provide a steering control device for a vehicle capable of performing a steering control so that the front wheels and rear wheels pass the same locus. SOLUTION: The steering control device 10 of the vehicle is equipped with a vehicle speed sensing means 6, a steering angle sensing means 5 for sensing the steering angle, a target yaw rate calculating means 11 to calculate the target yaw rate on the basis of the vehicle speed and the steering angle, a target body slip angle calculating means 12 to calculate the target body slip angle for the vehicle, and a steering angle calculating means 13 to calculate the steering angles of the front wheels 2f and rear wheels 2r on the basis of the target yaw rate and the target body slip angle. In detail, the target body slip angle calculating means 12 calculates the target body slip angle so that the front wheels 2f and the rear wheels 2r pass the same locus. By this steering control device 10 of the vehicle, it is possible to enhance the sense of running while the driver traces accurately the course aimed at while the stability of the vehicle behavior is well maintained by approaching the vehicle to the target yaw rate. COPYRIGHT: (C)2007,JPO&INPIT

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