公开(公告)号：US5445237A

公开(公告)日：1995-08-29

申请号：US363337

申请日：1994-12-23

申请人： Hiroshi Eda ,  Kenji Someya ,  Isamu Chikuma

发明人： Hiroshi Eda ,  Kenji Someya ,  Isamu Chikuma

IPC分类号： B62D5/04 ,  F16H55/24 ,  F16H57/023

CPC分类号： F16H55/24 ,  B62D5/0409 ,  B62D5/0421 ,  F16H57/023

摘要： An electric power steering apparatus having a compact and inexpensive backlash mechanism is provided by arranging its structure to easily adjust the backlash of the bevel gear mechanism, and at the same time, to pre-press the bearings so that the movement of the shaft in the axial direction can be regulated. The rotational shaft having a small gear coupled thereto which constitutes a bevel gear mechanism on one side is rotatively supported by a housing, but disabled to shift in the axial direction. The large gear which constitutes the bevel gear mechanism on the other side is coupled to the output shaft of a steering system so that it can shift in the rotational direction and axial direction together with the shaft. The output shaft is rotatively supported by bearings with respect to the housing with a movable sleeve which abuts upon the outer ring of the bearing. The movable sleeve can be driven in from the outside by means of an adjustment screw so that the backlash between the small and large gears can be adjusted, while the inner ring of the bearing can be driven in with respect to the output shaft by means of a lock nut to tighten the bearing which abuts upon the outer ring of the output shaft. In this way, the inner rings of the bearings are pressed inwardly themselves, hence removing the play thereof.

摘要翻译： 具有紧凑且廉价的间隙机构的电动助力转向装置通过布置其结构以容易地调节伞齿轮机构的齿隙而提供，同时，为了预压轴承，使得轴在 可以调节轴向。 具有联结到其上的小齿轮的旋转轴在一侧构成锥齿轮机构，由壳体旋转地支撑，但不能沿轴向移动。 构成另一侧的锥齿轮机构的大齿轮联接到转向系统的输出轴，使得其可以与轴一起在旋转方向和轴向方向上移动。 输出轴相对于壳体由轴承可旋转地支撑，其具有与轴承的外圈抵接的可动套筒。 可移动套筒可以通过调节螺钉从外部驱动，从而可以调节小齿轮和大齿轮之间的间隙，同时轴承的内圈可以相对于输出轴被驱动通过 用于拧紧与输出轴的外圈抵接的轴承的锁紧螺母。 以这种方式，轴承的内圈自身被向内压，从而消除了它们的游隙。

公开(公告)号：US5048852A

公开(公告)日：1991-09-17

申请号：US433915

申请日：1989-11-09

申请人： Isamu Chikuma ,  Satoru Shimada ,  Hiroshi Eda

发明人： Isamu Chikuma ,  Satoru Shimada ,  Hiroshi Eda

IPC分类号： B62D7/15

CPC分类号： B62D7/1536

摘要： A four-wheel steering apparatus comprises a front wheel steering member for steering front wheels by being displaced according to a movement of a steering wheel, a rear wheel steering mechanism for steering rear wheels, a coupling mechanism for mechanically coupling together the front wheel steering member and an input member of the rear wheel steering mechanism, and a play mechanism provided between an end of the coupling mechanism and the front wheel steering member or the input member or in an intermediate part of the coupling mechanism, the play mechanism effecting transmission of displacement only when a displacement in excess of a predetermined amount is produced in either direction from a position corresponding to a neutral position with respect to the steering angle of the front wheels. The rear wheel s6teering mechanism includes a mechanism for steering the rear wheels according to a movement of the input member and an independent steering mechanism for steering the rear wheels independently of displacement of the front wheel steering member.

公开(公告)号：US4732231A

公开(公告)日：1988-03-22

申请号：US895227

申请日：1986-08-11

申请人： Hirotaka Kanazawa ,  Teruhiko Takatani ,  Shigeki Furutani ,  Isamu Chikuma ,  Satoru Shimada ,  Hiroshi Eda

发明人： Hirotaka Kanazawa ,  Teruhiko Takatani ,  Shigeki Furutani ,  Isamu Chikuma ,  Satoru Shimada ,  Hiroshi Eda

IPC分类号： B62D5/26 ,  B62D7/14 ,  B62D7/15 ,  B62D5/06

CPC分类号： B62D7/1536

摘要： A vehicle four wheel steering system including a rear wheel steering mechanism with a power assist device. The rear wheel steering mechanism includes a steering rod extending transversely of the vehicle and having the opposite ends connected with tie rods which are in turn connected with knuckle arms of the rear wheels. The steering rod is provided with a power cylinder in which a piston is slidably disposed. The piston is provided on the steering rod and defines hydraulic chambers in the cylinder. A control valve is provided to control hydraulic oil supply to the power cylinder. The control valve has a casing which is connected with the steering rod through an interconnecting section and hydraulic oil passages are formed in the interconnecting section for passing hydraulic oil to and from the power cylinder.

摘要翻译： 一种车辆四轮转向系统，包括具有动力辅助装置的后轮转向机构。 后轮转向机构包括横向于车辆延伸的转向杆，并且其相对端与拉杆连接，该拉杆又与后轮的转向节相连。 转向杆设置有动力缸，其中可滑动地设置有活塞。 活塞设置在转向杆上，并在气缸中限定液压室。 提供控制阀来控制动力油缸的液压油供给。 控制阀具有通过互连部分与转向杆连接的壳体，并且在互连部分中形成液压油通道，用于使液压油与动力油缸相通。

公开(公告)号：US4621702A

公开(公告)日：1986-11-11

申请号：US647431

申请日：1984-09-05

申请人： Hirotaka Kanazawa ,  Teruhiko Takatani ,  Shigeki Furutani ,  Isamu Chikuma ,  Satoru Shimada ,  Hiroshi Eda

发明人： Hirotaka Kanazawa ,  Teruhiko Takatani ,  Shigeki Furutani ,  Isamu Chikuma ,  Satoru Shimada ,  Hiroshi Eda

IPC分类号： B62D7/15 ,  B62D5/06

CPC分类号： B62D7/1536

摘要： In a four-wheel steering apparatus of a vehicle for steering also the rear wheels in conformity with the steering of the front wheels by a steering wheel, a control force for a rear wheel steering device is mechanically taken out from a front wheel steering device and is suitably controlled in the intermediate portion and is transmitted as a steering control force to the rear wheel steering device, whereby the front wheels and the rear wheels are steered in the same direction when the absolute value of the steering angle of the front wheels is less than a predetermined value, and the rear wheels are steered in the direction reverse to the front wheels when the absolute value is greater than the predetermined value. In the intermediate portion, the taken-out control force is divided into a same direction steering control force for steering the rear wheels in the same direction as the front wheels and a reverse direction steering control force for steering the rear wheels in the direction reverse to the front wheels, and the reverse direction steering control force is absorbed and only the same direction steering control force is transmitted to the rear wheel steering device when the absolute value is less than the predetermined value, and the same direction steering control force is absorbed and only the reverse direction steering control force is transmitted to the rear wheel steering device when the absolute value is greater than the predetermined value.

摘要翻译： 在用于转向的后轮与前轮的方向盘的转向相一致的车辆的四轮转向装置中，用于后轮转向装置的控制力从前轮转向装置机械地取出， 适当地控制在中间部分并作为转向控制力传递到后轮转向装置，由此当前轮的转向角的绝对值较小时，前轮和后轮被转向相同的方向 超过预定值，并且当绝对值大于预定值时，后轮在与前轮相反的方向上转向。 在中间部分中，取出的控制力被分成与前轮相同的方向转向后轮的相同方向的转向控制力和用于使后轮在与前轮相反的方向上转向的反向转向控制力 前轮和反向转向控制力被吸收，并且当绝对值小于预定值时，只有相同的方向转向控制力传递到后轮转向装置，并且相同的方向转向控制力被吸收，并且 当绝对值大于预定值时，只有反方向转向控制力传递到后轮转向装置。