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公开(公告)号：US4971175A
公开(公告)日：1990-11-20
申请号：US684613
申请日：1984-12-21
Applicant: Tetsuro Hamada , Shoichi Sano , Yoshimi Furukawa
Inventor： Tetsuro Hamada , Shoichi Sano , Yoshimi Furukawa
IPC: B62D7/15
CPC classification number: B62D7/159
Abstract: A steering system (1) for vehicles including a front wheel steering mechanism (1a) for steering front wheels (5) at an angle in accordance with a steering operation of a driver, and a rear wheel steering mechanism (1b) for steering rear wheels (11) at an angle (Sr) in accordance with a travelling state of the vehicle. For the steering of the rear wheel, a reference steering angle (Ar) according to a turning state of the vehicle and a corrective steering angle (Ac) according to a velocity derivative thereof are computed, and the steering angle (Sr) of the rear wheel is obtained by making either an addition or a subtraction of the reference and corrective steering angles at least in accordance with the velocity derivative.
Abstract translation: 一种用于车辆的转向系统（1），包括根据驾驶员的转向操作以一定角度转向前轮（5）的前轮转向机构（1a）和用于转向后轮的后轮转向机构 （11）根据车辆的行驶状态成角度（Sr）。 对于后轮的转向，计算根据车辆的转向状态的基准转向角（Ar）和根据其的速度导数的矫正转向角（Ac），并且后轮的转向角（Sr） 通过至少根据速度导数进行参考的加法或减法和矫正转向角来获得车轮。
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公开(公告)号：US5010971A
公开(公告)日：1991-04-30
申请号：US189657
申请日：1988-05-03
Applicant: Tetsuro Hamada , Shoichi Sano , Yoshimi Furukawa
Inventor： Tetsuro Hamada , Shoichi Sano , Yoshimi Furukawa
IPC: B62D7/15
CPC classification number: B62D7/159
Abstract: A steering system (1) for vehicles including a front wheel steering mechanism (1a) for steering front wheels (5) at an angle in accordance with a steering operation of a driver, and a rear wheel steering mechanism (1b) for steering rear wheels (11) at an angle (Sr) in accordance with a travelling state of the vehicle.For the steering of the rear wheel, a reference steering angle (Ar) according to a turning state of the vehicle and a corrective steering angle (Ac) according to a velocity derivative thereof are computed, and the steering angle (Sr) of the rear wheel is obtained by making either an addition or a subtraction of the reference and corrective steering angles at least in accordance with the velocity derivative.
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公开(公告)号：US4964481A
公开(公告)日：1990-10-23
申请号：US690167
申请日：1985-01-10
Applicant: Shoichi Sano , Yoshimi Furukawa , Tetsuro Hamada
Inventor： Shoichi Sano , Yoshimi Furukawa , Tetsuro Hamada
IPC: B62D7/15
CPC classification number: B62D7/159
Abstract: A steering system for a vehicle with a steerable front wheel (5) and a rear wheel (11) controlled to be steered in accordance with a travelling state representative quantity (.delta..sub.f, V, .alpha..sub.a), wherein the rear wheel is steered taking into account at least a ratio of a cornering power (Kr) thereof to a vertical load on the tire thereof, besides the travelling state representative quantity.
Abstract translation: 一种具有可转向前轮（5）和后轮（11）的车辆的转向系统，其被控制为根据行驶状态代表量（Δf，V，αa）进行转向，其中后轮被转向 除了行驶状态代表量之外，至少考虑到其转弯功率（Kr）与其轮胎上的垂直载荷的比率。
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公开(公告)号：US4984646A
公开(公告)日：1991-01-15
申请号：US323496
申请日：1989-03-14
Applicant: Shoichi Sano , Yoshimi Furukawa , Akihiko Takei , Yutaka Nishi , Yasuaki Ohno
Inventor： Shoichi Sano , Yoshimi Furukawa , Akihiko Takei , Yutaka Nishi , Yasuaki Ohno
IPC: B62D5/00 , B62D6/00 , B62D101/00 , B62D113/00 , B62D119/00 , B62D137/00
Abstract: A steering system for a motor vehicle having power steering means including an actuator for turning steerable road wheels of the motor vehicle includes a control mechanism for eliminating a deviation between a desired direction of travel of the motor vehicle and an actual direction of travel of the motor vehicle, based on an output signal from a direction indicating mechanism which indicates the desired direction and an output signal from a direction detecting mechanism which detects the actual direction. The control mechanism determines a target turning angle for the steerable road wheels dependent on the deviation between the desired direction and the actual direction, and controls the power steering mechanism to turn the steerable road wheels up to the target turning angle.
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公开(公告)号：US4772036A
公开(公告)日：1988-09-20
申请号：US35646
申请日：1987-04-07
Applicant: Shoichi Sano , Yoshimi Furukawa , Masami Ogura , Masaru Abe , Yasuharu Oyama
Inventor： Shoichi Sano , Yoshimi Furukawa , Masami Ogura , Masaru Abe , Yasuharu Oyama
CPC classification number: B62D7/1545 , Y10T74/18208 , Y10T74/18256
Abstract: A steering system for the front and rear wheels of an automotive vehicle comprises a front wheel steering mechanism having an output shaft, a rear wheel steering mechanism having an input shaft coupled to the output shaft, an output member for steering the rear wheels, and a motion converting mechanism for converting rotation of the input shaft to movement of the output member, a vehicle speed sensor, and a control unit connected to the vehicle speed sensor for controlling operation of the motion converting mechanism dependent on the vehicle speed detected by the vehicle speed sensor. The motion converting mechanism comprises a shaft angularly movable by the input shaft, the shaft having an arm extending radially from one end thereof, a guide mounted on the output member and extending in a vertical direction transverse to an axis of the output member, a slide assembly disposed between and interconnecting the arm and the guide, and a drive device controlled by the control unit for moving the slide assembly along the guide.
Abstract translation: 用于机动车辆的前轮和后轮的转向系统包括具有输出轴的前轮转向机构，具有联接到输出轴的输入轴的后轮转向机构，用于转向后轮的输出构件和 运动转换机构，用于将输入轴的旋转转换为输出部件的运动，车速传感器和连接到车速传感器的控制单元，用于根据车速检测的运动转换机构的运转来控制运动转换机构 传感器。 运动转换机构包括可由输入轴角度运动的轴，该轴具有从其一端径向延伸的臂，安装在输出构件上并沿垂直于输出构件的轴线的垂直方向延伸的导向件，滑块 所述组件设置在所述臂和所述引导件之间并使其相互连接，以及由所述控制单元控制的用于沿着所述引导件移动所述滑动组件的驱动装置。
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Patent Agency Ranking
公开(公告)号：US4582334A
公开(公告)日：1986-04-15
申请号：US541132
申请日：1983-10-12
Applicant: Yutaka Tashiro , Yoshimi Furukawa , Shoichi Sano
Inventor： Yutaka Tashiro , Yoshimi Furukawa , Shoichi Sano
CPC classification number: B62D7/1527 , B60G2200/18 , B60G2200/341 , B60G2200/462
Abstract: A steering system for a vehicle having a steering wheel and front and rear wheels, including a front steering sub-system for steering the front wheels in accordance with the steering angle of the steering wheel and a rear steering sub-system for steering the rear wheels in the same and opposite directions with respect to the front wheels in accordance with the steering angle of the steering wheel. The steering system is provided with a rack and pinion type variable-ratio mechanism for varying the ratio of the steered angle of at least either of the front or rear wheels to the steering angle of the steering wheel in accordance with the magnitude of the steering angle of the steering wheel. The design freedom in setting a functional relation between the steering angle of the steering wheel and the turning curvature of the vehicle is thus maximized. Moreover, selective setting is permitted for change of ratio of the steered angle of the rear wheels to the steering angle in the vicinity of the initial position of the steering wheel. Further, there is permitted a favorable use of available vehicle dimensions to achieve an optimum feeling characteristic of steering operation.
Abstract translation: 一种用于车辆的转向系统，其具有方向盘和前轮和后轮，包括根据方向盘的转向角度转向前轮的前转向子系统和用于转向后轮的后转向子系统 根据方向盘的转向角度，相对于前轮相同且相反的方向。 转向系统设有齿条齿轮型可变比机构，用于根据转向角的大小改变前轮或后轮中的至少一个的转向角与方向盘的转向角的比率 的方向盘。 因此，使方向盘的转向角与车辆的转弯曲率之间的功能关系的设计自由度最大化。 此外，允许选择性地设定用于改变后轮的转向角与方向盘的初始位置附近的转向角的比率。 此外，允许有利地使用可用的车辆尺寸以实现转向操作的最佳感觉特性。
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公开(公告)号：US4553768A
公开(公告)日：1985-11-19
申请号：US553704
申请日：1983-11-21
Applicant: Yoshimi Furukawa , Shoichi Sano , Hiroshi Takamatsu , Makoto Sato
Inventor： Yoshimi Furukawa , Shoichi Sano , Hiroshi Takamatsu , Makoto Sato
CPC classification number: B62D7/1527
Abstract: A rear suspension for a vehicle including a vehicle body, front and rear wheels and a steering system for steering both the front and rear wheels by a steering wheel.The rear suspension comprises a rear sheel support member for supporting the rear wheels with respect to the vehicle body and a biasing mechanism, interposed between the vehicle body and the rear wheel support member, for biasing the rear wheel to restore the steering position thereof to the neutral position thereof.The rear wheel support member may comprise a shock absorber and a lower arm while the biasing mechanism may be a rubber bush.
Abstract translation: 一种用于车辆的后悬架，包括车体，前轮和后轮以及用于通过方向盘来转向前轮和后轮的转向系统。 后悬架包括用于相对于车体支撑后轮的后轮支撑构件和设置在车体和后轮支撑构件之间的偏置机构，用于偏压后轮以将其转向位置恢复到 中性位置。 后轮支撑构件可以包括减震器和下臂，同时偏置机构可以是橡胶衬套。
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公开(公告)号：US4467885A
公开(公告)日：1984-08-28
申请号：US402802
申请日：1982-07-28
Applicant: Yoshimi Furukawa , Shoichi Sano
Inventor： Yoshimi Furukawa , Shoichi Sano
CPC classification number: B62D7/1536
Abstract: A vehicular steering system which includes a steering wheel, front wheels and a steering mechanism therefor, and rear wheels and a steering mechanism therefor, the front and rear wheel steering mechanisms serving to steer both the front and rear wheels by operation of the steering wheel. The steering system is provided with a front wheel steering system connecting the steering wheel with the front wheels through the front wheel steering mechanism, a connection path connecting the front wheel steering mechanism with the rear wheel steering mechanism, a rear wheel steering system connecting the steering wheel with the rear wheels through the connection path and the rear wheel steering mechanism, and an auxiliary power mechanism connected to the connection path so as to assist steering operation of the steering wheel. The steering system provides for reduction in the steering torque appropriately in response to a resultant force of an external force acting on the front wheels from the road surface plus an external force acting on the rear wheels from the road surface at the time of steering operation for both wheels. The connection path of the system is arranged above lower vehicle members such as an exhaust pipe and a fuel tank, so that such members protect the connection path from damage.
Abstract translation: 一种车辆转向系统，其包括方向盘，前轮及其转向机构，以及后轮及其转向机构，前轮和后轮转向机构用于通过方向盘的操作来转向前轮和后轮。 转向系统设有前轮转向系统，前轮转向系统通过前轮转向机构连接方向盘与前轮，连接前轮转向机构与后轮转向机构的连接路径，连接转向器的后轮转向系统 通过连接路径和后轮转向机构的后轮的车轮，以及连接到连接路径以辅助方向盘的转向操作的辅助动力机构。 该转向系统提供了适当地减小转向转矩，以响应于在转向操作时从路面加上作用在前轮上的外力的合力加上从路面作用在后轮上的外力 两个轮子 系统的连接路径布置在诸如排气管和燃料箱的下部车辆构件之上，使得这些构件保护连接路径免受损坏。
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公开(公告)号：US4881748A
公开(公告)日：1989-11-21
申请号：US191543
申请日：1988-05-09
Applicant: Shoichi Sano , Yoshimi Furukawa , Masami Ogura , Masaru Abe , Yasuharu Oyama
Inventor： Shoichi Sano , Yoshimi Furukawa , Masami Ogura , Masaru Abe , Yasuharu Oyama
IPC: B62D7/15
CPC classification number: B62D7/1545 , Y10T74/18208 , Y10T74/18256
Abstract: A steering system for the front and rear wheels of an automotive vehicle comprises a front wheel steering mechanism having an output shaft, a rear wheel steering mechanism having an input shaft coupled to the output shaft, an output member for steering the rear wheels, and a motion converting mechanism for converting rotation of the input shaft to movement of the output member, a vehicle speed sensor, and a control unit connected to the vehicle speed sensor for controlling operation of the motion converting mechanism dependent on the vehicle speed detected by the vehicle speed sensor. The motion converting mechanism comprises a shaft angularly movable by the input shaft, the shaft having an arm extending radially from one end thereof, a guide mounted on the output member and extending in a vertical direction transverse to an axis of the output member, a slide assembly disposed between and interconnecting the arm and the guide, and a drive device controlled by the control unit for moving the slide assembly along the guide. The drive device includes a gear mechanism connected with said slide assembly and a pair of motors coupled to the gear mechanism for driving the same, the pair of motors being driven in association with each other.
Abstract translation: 用于机动车辆的前轮和后轮的转向系统包括具有输出轴的前轮转向机构，具有联接到输出轴的输入轴的后轮转向机构，用于转向后轮的输出构件和 运动转换机构，用于将输入轴的旋转转换为输出部件的运动，车速传感器和连接到车速传感器的控制单元，用于根据车速检测的运动转换机构的运转来控制运动转换机构 传感器。 运动转换机构包括可由输入轴角度运动的轴，该轴具有从其一端径向延伸的臂，安装在输出构件上并沿垂直于输出构件的轴线的垂直方向延伸的导向件，滑块 所述组件设置在所述臂和所述引导件之间并使其相互连接，以及由所述控制单元控制的用于沿着所述引导件移动所述滑动组件的驱动装置。 驱动装置包括与所述滑动组件连接的齿轮机构和联接到齿轮机构的一对电动机，用于驱动它们，所述一对电动机相互联动地驱动。
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公开(公告)号：US4610455A
公开(公告)日：1986-09-09
申请号：US658190
申请日：1984-10-05
Applicant: Yoshimi Furukawa , Shoichi Sano
Inventor： Yoshimi Furukawa , Shoichi Sano
CPC classification number: B62D7/1545
Abstract: A steering system for front and rear wheels of a motor vehicle wherein the steering ratio of the rear wheels to the front wheels is variable dependent on the speed of the motor vehicle. The steering system includes a steering wheel, front wheels, a first assembly for steering the front wheels, rear wheels, a second assembly for steering the rear wheels, and a third assembly which transmits the direction and extent of steering of the front wheels to the second assembly, a fourth assembly controls the steering ratio between the front and rear wheels in response to a signal indicative of the speed of the motor vehicle or a signal related to the speed of the motor vehicle. Each of the rear wheels has a kingpin having a central line which has an extension which is positioned rearwardly of a point where a vertical line passing through the center of an axle of the rear wheel intersects the ground on which the motor vehicle is placed. The steering system provides a facilitated compensating operation of the steering wheel by increasing a reactive force against steering which allows the driver to return the steering wheel of its own accord without excessively turning the steering wheel upon vehicle deceleration, and reducing the reactive force to allow the driver to turn the steering wheel of its own accord upon vehicle acceleration.
Abstract translation: 一种用于机动车辆的前轮和后轮的转向系统，其中后轮与前轮的转向比取决于机动车辆的速度而变化。 转向系统包括方向盘，前轮，用于转向前轮的第一组件，后轮，用于转向后轮的第二组件，以及将前轮的转向方向和程度传递到第三组件的第三组件 第二组件，第四组件响应于指示机动车辆的速度的信号或与机动车辆的速度有关的信号来控制前轮和后轮之间的转向比。 每个后轮具有中心线，其中心线具有延伸部，该延伸部位于通过后轮的车轴的中心的垂直线与放置有机动车辆的地面相交的点的后方。 转向系统通过增加对转向的反作用力来提供方向盘的便利的补偿操作，这允许驾驶员自己返回方向盘，而不会在车辆减速时过度地转动方向盘，并且减小反作用力以允许 驾驶员在车辆加速时自行转动方向盘。
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