公开(公告)号：US4834406A

公开(公告)日：1989-05-30

申请号：US141729

申请日：1988-01-11

Applicant: Yoshiaki Mukai ,  Hirotaka Kanazawa ,  Koushun Note ,  Yasuhiro Nakashima

Inventor： Yoshiaki Mukai ,  Hirotaka Kanazawa ,  Koushun Note ,  Yasuhiro Nakashima

IPC: B62D7/14 ,  B62D7/15

CPC classification number: B62D7/1527

Abstract: A four-wheel steering system for a vehicle in which the rear wheels of a vehicle are turned in response to the turning of the front wheels of the vehicle upon operation of a steering wheel. The rear wheel steering is derived from the front wheel steering by way of a transmission shaft. The transmission shaft is supported rotatably and for sliding movement in the axial direction by way of a bearing fixed on the vehicle body. A stopper ring is fixed on the transmission shaft a short distance forward from the bearing to limit the backward sliding of the transmission shaft.

Abstract translation: 一种用于车辆的四轮转向系统，其中车辆的后轮在操作方向盘时响应于车辆的前轮的转动而转动。 后轮转向通过传动轴由前轮转向导出。 传动轴可旋转地支撑，并且通过固定在车身上的轴承沿轴向滑动。 传动轴上的轴承固定在传动轴前方较短的距离，以限制传动轴的向后滑动。

公开(公告)号：US4896737A

公开(公告)日：1990-01-30

申请号：US184982

申请日：1988-04-22

Applicant: Hirotaka Kanazawa ,  Koushun Note ,  Yasuhiro Nakashima ,  Takeshi Murai

Inventor： Hirotaka Kanazawa ,  Koushun Note ,  Yasuhiro Nakashima ,  Takeshi Murai

IPC: B62D7/14 ,  B62D7/15

CPC classification number: B62D7/148 ,  B62D7/1536

Abstract: A four-wheel steering apparatus for a vehicle consisting of a steering mechanism that includes a steering wheel. A front wheel turning mechanism is operatively connected to the steering mechanism to turn the front wheels according to the turning angle of the steering wheel. A rear wheel turning mechanism is operatively connected to the steering mechanism to turn the rear wheels in response to operation of the steering wheel. A hydraulically operated power assist is connected with the rear wheels turning mechanism. A rear wheels steering ratio changing mechanism is provided for changing the ratio of the turning angle of the rear wheels with respect to the turning angle of the steering wheel. A return mechanism is provided for returning the rear wheels to a neutral position. A valve mechanism drains the oil applied from an oil pump to the power assist mechanism. An engine stop mechanism is provided for stopping the engine. A control mechanism is provided for controlling the valve mechanism to drain the oil when the engine stop mechanism outputs a signal for stopping the engine. A delay mechanism is provided for delaying the drain of the oil applied from the oil pump to the power assist means.

Abstract translation: 一种用于车辆的四轮转向装置，其包括方向盘的转向机构。 前轮转向机构可操作地连接到转向机构，以根据方向盘的转动角转动前轮。 后轮转向机构可操作地连接到转向机构以响应于方向盘的操作来转动后轮。 液压操作的动力辅助与后轮转向机构连接。 提供了后轮转向比改变机构，用于改变后轮的转向角度相对于方向盘的转向角度的比率。 提供返回机构用于使后轮返回中立位置。 阀机构将从油泵施加的油排出到动力辅助机构。 提供用于停止发动机的发动机停止机构。 提供一种控制机构，用于当发动机停止机构输出用于停止发动机的信号时，控制阀机构排出油。 提供延迟机构，用于将从油泵施加的油的排放延迟到动力辅助装置。

公开(公告)号：US4881613A

公开(公告)日：1989-11-21

申请号：US184984

申请日：1988-04-22

Applicant: Hirotaka Kanazawa ,  Koushun Note ,  Yasuhiro Nakashima

Inventor： Hirotaka Kanazawa ,  Koushun Note ,  Yasuhiro Nakashima

IPC: B62D5/07 ,  B62D7/14 ,  B62D7/15

CPC classification number: B62D7/159 ,  B62D7/1536 ,  B62D7/1545

Abstract: A vehicle four-wheel steering apparatus including a manually operated steering member and front and rear wheel steering mechanisms coupled with the steering member for producing steering movements in the vehicle front and rear wheels. The rear wheel steering mechanism includes a power assist actuated by an oil pump driven by the vehicle engine. A return spring returns the rear wheels to a neutral position when the power assist is off. A steering condition detector detects the condition of the rear steering mechanism. An engine output power increase mechanism increases the engine output power responsive to a control signal for increasing the engine output power when the rear steering mechanism is actuated.

Abstract translation: 一种车辆四轮转向装置，其包括手动操作的转向构件和与该转向构件联接的前后轮操纵机构，用于在车辆前轮和后轮中产生转向运动。 后轮转向机构包括由车辆发动机驱动的油泵致动的动力辅助。 当辅助关闭时，复位弹簧将后轮返回到中立位置。 转向条件检测器检测后转向机构的状况。 发动机输出功率增加机构响应于控制信号增加发动机输出功率，以在后转向机构致动时增加发动机输出功率。

公开(公告)号：US4854410A

公开(公告)日：1989-08-08

申请号：US158921

申请日：1988-02-22

Applicant: Hirotaka Kanazawa ,  Koushun Note ,  Yasuhiro Nakashima ,  Yoshiaki Mukai ,  Shunji Sakamoto ,  Shigeo Okamizu

Inventor： Hirotaka Kanazawa ,  Koushun Note ,  Yasuhiro Nakashima ,  Yoshiaki Mukai ,  Shunji Sakamoto ,  Shigeo Okamizu

IPC: B62D7/15

CPC classification number: B62D7/15 ,  B62D7/1545

Abstract: A four-wheel steering system has a front wheel turning mechanism for turning front wheels in response to operation of a steering wheel, a rear wheel turning mechanism for turning rear wheels, a controller for controlling the rear wheel turning mechanism to turn the rear wheels according to preset four-wheel steering characteristics and a relay shaft which is connected to the controller to transmit turning of the front wheels to the controller. The front wheel turning mechanism and the rear wheel turning mechanism are caused to bring the front wheels and the rear wheels to the respective straight-ahead positions while the relay shaft is disconnected from the controller. Then the controller is brought into the state corresponding to the straight-ahead positions of the front and rear wheels on the basis of the preset four-wheel steering characteristics. Thereafter, the relay shaft is connected to the controller.