公开(公告)号：US4790551A

公开(公告)日：1988-12-13

申请号：US10457

申请日：1987-02-03

申请人： Norio Ukai ,  Mitsuya Serizawa ,  Yasuharu Oyama ,  Yoshimi Furukawa ,  Masami Ogura ,  Tsuyoshi Sato

发明人： Norio Ukai ,  Mitsuya Serizawa ,  Yasuharu Oyama ,  Yoshimi Furukawa ,  Masami Ogura ,  Tsuyoshi Sato

IPC分类号： B62D7/15 ,  B62D15/02 ,  B62D7/00

CPC分类号： B62D15/02 ,  B62D7/1527

摘要： A steering system for a motor vehicle includes a centering mechanism for establishing a neutral steering position. The steering system includes a steering wheel and a steering assembly for steering vehicle wheels in response to angular movement of the steering wheel. The centering mechanism is mounted on at least a portion of the steering assembly for establishing the neutral steering position of the steering assembly.

摘要翻译： 用于机动车辆的转向系统包括用于建立中立转向位置的定中心机构。 转向系统包括方向盘和用于响应于方向盘的角度运动而转向车轮的转向组件。 定心机构安装在转向组件的至少一部分上，用于建立转向组件的中立转向位置。

公开(公告)号：US4881748A

公开(公告)日：1989-11-21

申请号：US191543

申请日：1988-05-09

申请人： Shoichi Sano ,  Yoshimi Furukawa ,  Masami Ogura ,  Masaru Abe ,  Yasuharu Oyama

发明人： Shoichi Sano ,  Yoshimi Furukawa ,  Masami Ogura ,  Masaru Abe ,  Yasuharu Oyama

IPC分类号： B62D7/15

CPC分类号： B62D7/1545 ,  Y10T74/18208 ,  Y10T74/18256

摘要： 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.

摘要翻译： 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。

公开(公告)号：US4772036A

公开(公告)日：1988-09-20

申请号：US35646

申请日：1987-04-07

申请人： Shoichi Sano ,  Yoshimi Furukawa ,  Masami Ogura ,  Masaru Abe ,  Yasuharu Oyama

发明人： Shoichi Sano ,  Yoshimi Furukawa ,  Masami Ogura ,  Masaru Abe ,  Yasuharu Oyama

IPC分类号： B62D7/15 ,  B62D5/10

CPC分类号： B62D7/1545 ,  Y10T74/18208 ,  Y10T74/18256

摘要： 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.

摘要翻译： 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。

公开(公告)号：US4767129A

公开(公告)日：1988-08-30

申请号：US821998

申请日：1986-01-24

申请人： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

发明人： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

IPC分类号： B62D7/15 ,  B62D9/00

CPC分类号： B62D7/1545

摘要： Disclosed is an actuator for steering the rear wheels in front and rear wheel steering device for vehicle in which the external forces, such as the self aligning torque of the rear wheels and irregularities of the road surface, which may be applied to the rear wheels are prevented from being transmitted to the actuator for controlling the steering angle of the rear wheels. Thereby, the steering angle of the rear wheels are determined solely by the control action of the front and rear wheel steering device and the motion of the vehicle is not affected by external forces. As a result, the vehicle motion is stabilized. When the force for steering the front wheels is transmitted to the rear wheels to steer them, elimination of the reaction from the road to the actuator prevents undesirable variation in the force required to steer the vehicle or the force required to hold a steering angle. Elimination of reaction to the actuator can be accomplished by worm gears, screw threads and so on in which the lead angle is smaller than the friction angle.

摘要翻译： 公开了一种用于车辆前轮转向装置和后轮转向装置中用于转向后轮的致动器，其中可以施加到后轮的后轮的自对准扭矩和路面的不规则性等外力是 防止被传递到用于控制后轮的转向角的致动器。 因此，后轮的转向角仅由前轮和后轮转向装置的控制动作确定，车辆的运动不受外力的影响。 结果，车辆运动稳定。 当用于转向前轮的力被传递到后轮以转向时，消除从道路到致动器的反作用力可防止转向车辆所需的力或保持转向角所需的力的不期望的变化。 消除对致动器的反应可以通过蜗杆，螺纹等实现，其中导程角小于摩擦角。

公开(公告)号：US4705135A

公开(公告)日：1987-11-10

申请号：US822293

申请日：1986-01-24

申请人： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

发明人： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

IPC分类号： B62D7/15 ,  B60K17/358

CPC分类号： B62D7/1545

摘要： The front and rear wheel steering device of the present invention not only has a means for allowing the manual selection of a mathematical function which determines the steering angle ratio of the rear wheels relative to the front wheels from a plurality of mathematical functions but also has a means for limiting such a manual selection depending on the condition of the vehicle. Since manual selection of a mathematical function for the steering angle ratio may not be appropriate under certain vehicle conditions, the device of the present invention limits such a manual selection when the vehicle speed, the vehicle acceleration, the shift position of the transmission, the steering speed or the steering acceleration is greater than a certain value. Thereby, the convenience of the manual selection of the steering angle ratio is preserved yet any undesirable vehicle response from improper manual selection of the steering angle ratio is prevented.

摘要翻译： 本发明的前轮和后轮转向装置不仅具有允许手动选择从多个数学函数确定后轮相对于前轮的转向角比的数学函数的装置，而且还具有 用于根据车辆的状况限制这种手动选择的装置。 由于在某些车辆状态下手动选择转向角比的数学函数可能不合适，所以本发明的装置在车速，车辆加速度，变速器的换档位置，转向 转速或转向加速度大于一定值。 因此，保持手动选择转向角比的便利性，防止了由于不正确的手动选择转向角比而导致的不期望的车辆响应。

公开(公告)号：US4703945A

公开(公告)日：1987-11-03

申请号：US822008

申请日：1986-01-24

申请人： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

发明人： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

IPC分类号： B62D7/15 ,  B62D5/06

CPC分类号： B62D7/1545

摘要： An actuator for steering the rear wheels in front and rear steering device for a vehicle in which the steering angle of the rear wheels can be manually neutralized should the actuator fail with the rear wheels steered to a certain angle. The actuator may be a type which either directly steers the rear wheels following command from control means or varies the state of means for setting up the steering angle ratio of the rear wheels. In either case, a preferably detachable handle may be engaged to an output end of power means of the actuator. Thus, the situation in which the rear wheels are frozen at a certain steering angle and the driving of the vehicle becomes difficult is safely avoided.

摘要翻译： 如果在后轮转向一定角度的情况下，执行器将会在后轮的前后转向装置中转向后轮的致动器，其中后轮的转向角可以手动中和。 致动器可以是直接从控制装置引导的后轮的转向或改变用于设定后轮的转向角比的装置的状态。 在任一情况下，优选地可拆卸手柄可以接合到致动器的动力装置的输出端。 因此，安全地避免了后轮在一定的转向角度被冻结并且车辆的行驶变得困难的情况。

公开(公告)号：US4703822A

公开(公告)日：1987-11-03

申请号：US844806

申请日：1986-03-27

申请人： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

发明人： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

IPC分类号： B62D6/02 ,  B62D6/00 ,  B62D7/14 ,  B62D7/15 ,  B62D101/00 ,  B62D111/00 ,  B62D113/00 ,  B62D5/00 ,  B62D7/00

CPC分类号： B62D7/159

摘要： A front and rear wheel steering device which varies the steering angle ratio of rear wheels relative to the steering angle of front wheels in relation with vehicle speed is utilized to improve the drive response of a vehicle, as well as to improve the maneuverability of the vehicle. By varying the steering angle ratio which is a function of vehicle speed according to the running condition of the vehicle, the interference of the running condition of the vehicle upon the driving response can be reduced. The driving response may be evaluated in terms of yaw rate or lateral acceleration of the vehicle for a certain steering input. The running condition of the vehicle may comprise any combination of vehicle acceleration, friction between tires and the road surface, load acting between front wheels and the road surface, and load acting between rear wheels and the road surface.

摘要翻译： 利用相对于车速相对于前轮的转向角度改变后轮的转向角比的前后转向装置，以提高车辆的行驶响应，提高车辆的机动性 。 通过根据车辆的行驶状态改变作为车速的函数的转向角比，可以减少车辆在行驶响应时的行驶状态的干扰。 驾驶响应可以根据用于某一转向输入的车辆的偏航率或横向加速度来评估。 车辆的运行状态可以包括车辆加速度，轮胎和路面之间的摩擦，在前轮和路面之间作用的负载以及作用在后轮与路面之间的负载的任何组合。

公开(公告)号：US4598788A

公开(公告)日：1986-07-08

申请号：US695956

申请日：1985-01-29

申请人： Mitsuya Serizawa ,  Shoichi Sano ,  Yoshimi Furukawa

发明人： Mitsuya Serizawa ,  Shoichi Sano ,  Yoshimi Furukawa

IPC分类号： B62D7/15 ,  B62D5/00

CPC分类号： B62D7/159 ,  B62D7/1572

摘要： A steering system for a vehicle with front and rear wheels suspended from a vehicle body through a suspending mechanism, comprising a front wheel steering mechanism for steering the front wheels at an angle in accordance with a steering operation of a driver, and a rear wheel steering mechanism for steering the rear wheels at an angle in accordance with a travelling state of the vehicle. The rear wheel steering mechanism has an arrangement for determining a steered angle correction quantity of the rear wheels in correspondence with a cushioning state of the wheel suspending mechanism, and an arrangement for specifying the steering angle of the rear wheels in accordance with the steered angle correction quantity.The cushioning state may be ascertained by detecting a cushioning stroke of the suspending mechanism or a roll angle of the vehicle.

摘要翻译： 一种用于车辆的转向系统，其具有通过悬挂机构从车身悬挂的前轮和后轮，包括前轮转向机构，用于根据驾驶员的转向操作以一定角度转向前轮，以及后轮转向 用于根据车辆的行驶状态以一定角度转向后轮的机构。 后轮转向机构具有用于根据车轮悬挂机构的缓冲状态来确定后轮的转向角度校正量的装置，以及用于根据转向角度校正来指定后轮的转向角的装置 数量。 可以通过检测悬挂机构的缓冲行程或车辆的倾斜角来确定缓冲状态。

公开(公告)号：US4706976A

公开(公告)日：1987-11-17

申请号：US822010

申请日：1986-01-24

申请人： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

发明人： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

IPC分类号： B62D6/02 ,  B62D7/14 ,  B62D7/15

CPC分类号： B62D7/1545

摘要： In a front and rear wheel steering device for a vehicle in which the steering angle ratio of the rear wheels relative to the front wheels is variable according to the vehicle speed, by accounting for the magnitude of vehicle acceleration in determining the steering angle ratio of the rear wheels by using a mathematical function in the form of f(u) - g(u')where u is a vehicle speed and u' is a change rate of the vehicle speed, it is possible to reduce the slip angle of the vehicle to zero irrespective of the vehicle speed and the vehicle acceleration and the phase delay of the lateral response of the vehicle can be reduced, whereby the driveability of the vehicle is substantially improved and, thus, driving a car can be made easier, safer and less tiring.

摘要翻译： 在前轮和后轮转向装置中，其中后轮相对于前轮的转向角比可根据车速而变化，通过考虑确定车辆的转向角比的车辆加速度的大小， 通过使用f（u）-g（u'）形式的数学函数，其中u是车速，u'是车速的变化率，可以减小车辆的滑移角 无论车速如何，车辆的加速度和车辆的横向响应的相位延迟都可以减小，由此可以显着提高车辆的驾驶能力，因此可以使驾驶汽车更容易，更安全，更少 累了

公开(公告)号：US4695068A

公开(公告)日：1987-09-22

申请号：US822000

申请日：1986-01-24

申请人： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

发明人： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

IPC分类号： B62D7/15 ,  B62D6/00

CPC分类号： B62D7/1545

摘要： In a front and rear wheel steering device contive for vehicle in which the steering angle ratio of the rear wheels relative to the front wheels is variable according to the vehicle speed, provision of a manual selection means for fixing the steering angle ratio to certain fixed values which may be either positive or negative can greatly improve the maneuverability of the vehicle in both high speed and low speed ranges. However, inadvertent manual selection of the steering angle ratio is not desirable since it may cause a sudden change in the steering angle of the rear wheels. Therefore, this invention provides means for preventing the manual selection of the steering angle ratio when it is not proper. This means may be an active prohibition control of manual steering angle ratio selection means, an alarm to warn the driver or a vehicle speed control which limits the vehicle speed. The situations in which the manual selection of the steering angle ratio is not proper may be determined from such factors as vehicle acceleration, transmission shift position, steering rate and so on.

摘要翻译： 在后轮相对于前轮的转向角比可根据车速而变化的车辆用后轮转向装置中，设置用于将转向角比固定为某一固定值的手动选择装置 其可以是正的或负的可以大大提高车辆在高速和低速范围内的机动性。 然而，无意的手动选择转向角比是不期望的，因为它可能导致后轮的转向角的突然变化。 因此，本发明提供了当不适当时防止手动选择转向角比的装置。 这意味着可以是手动转向角比选择装置的主动禁止控制，警告驾驶员的警报或限制车辆速度的车速控制。 可以根据车辆加速度，变速档位，转向率等因素来确定手动选择转向角比例不正确的情况。