公开(公告)号：US5732790A

公开(公告)日：1998-03-31

申请号：US562897

申请日：1995-11-27

Applicant: Shuji Endo ,  Hiroyuki Kano ,  Hideaki Kawada ,  Yasuhiko Miyaura ,  Isamu Chikuma ,  Hiroshi Eda ,  Shozo Sekiya ,  Nobuyasu Ando ,  Kenichi Hayakawa

Inventor： Shuji Endo ,  Hiroyuki Kano ,  Hideaki Kawada ,  Yasuhiko Miyaura ,  Isamu Chikuma ,  Hiroshi Eda ,  Shozo Sekiya ,  Nobuyasu Ando ,  Kenichi Hayakawa

IPC: B62D5/04 ,  B62D6/10

CPC classification number: B62D5/0409 ,  B62D5/0406 ,  B62D6/10

Abstract: In order to provide an electric power steering apparatus which can be made compact as well as reduced in cost and can be improved in reliability, a control circuit and a drive circuit are provided on a deformable flexible circuit substrate. The circuit substrate is provided on the housing of a reduction gear mechanism while being deformed so as to cover a portion of the outer surface of the housing along the shape of the outer surface.

Abstract translation: 为了提供一种电动助力转向装置，其可以制造得紧凑并且成本降低并且可以提高可靠性，在可变形的柔性电路基板上提供控制电路和驱动电路。 电路基板被设置在减速机构的壳体上，同时沿着外表面的​​形状变形以覆盖外壳的外表面的一部分。

公开(公告)号：US5248009A

公开(公告)日：1993-09-28

申请号：US755337

申请日：1991-09-05

Applicant: Shin Takehara ,  Hiroshi Ohmura ,  Ryuya Akita ,  Isamu Chikuma ,  Hiroyuki Ito ,  Hiroshi Eda

Inventor： Shin Takehara ,  Hiroshi Ohmura ,  Ryuya Akita ,  Isamu Chikuma ,  Hiroyuki Ito ,  Hiroshi Eda

IPC: B62D7/15

CPC classification number: B62D7/1581

Abstract: A vehicle rear wheels steering apparatus is provided with a guide member having a guideway capable of freely tilting toward the axis of the rod member. Therefore, when the rod member rotates around the axis, an operating member provided on the outside of the rod member rotates around the rod member axis along the guideway to steer the rear wheels by an amount corresponding to an amount of rotation of the rod member and an amount of tilting of the guideway.

公开(公告)号：US5147009A

公开(公告)日：1992-09-15

申请号：US692305

申请日：1991-04-26

Applicant: Isamu Chikuma ,  Hiroshi Eda

Inventor： Isamu Chikuma ,  Hiroshi Eda

IPC: B62D6/02

CPC classification number: B62D6/02

Abstract: A steering reaction force generating mechanism for generating a reaction force acting on an input shaft is provided within a cylindrical space of a housing between a lower end portion of the input shaft and an upper end portion of a pinion shaft (output shaft). The steering reaction force generating mechanism includes an input shaft accommodating section for accommodating the lower end of the input shaft together with its two control arms which protrude symmetrically and radially therefrom. A pair of reaction force chambers are provided at both sides of the input shaft accommodating section in parallel with the two control arms. Two pairs of through bores are formed respectively between one of the reaction force chambers and the input shaft accommodating section, and between the other of the reaction force chambers and the input shaft accommodating section. Two pairs of plungers are respectively disposed in the through bores so that each plunger is slidable in its axial direction toward and away from the control arm of the input shaft. The movement of each plunger is restricted by a pin inserted into a further through bore formed in the plunger extending in a direction orthogonal to the axis of the plunger. The inner peripheral surface of the through bore and the outer peripheral surface of the plunger can be ground easily and accurately to insure smooth movement of the plunger.

Abstract translation: 在输入轴的下端部和小齿轮轴（输出轴）的上端部之间的壳体的圆筒状空间内设置有用于产生作用在输入轴上的反作用力的转向反作用力产生机构。 转向反作用力产生机构包括：输入轴容纳部，用于将输入轴的下端与其对称地和径向突出的两个控制臂一起容纳。 一对反作用力室与两个控制臂平行设置在输入轴容纳部分的两侧。 分别在一个反作用力室和输入轴容纳部之间以及另一个反作用力室和输入轴容纳部之间形成两对通孔。 两对柱塞分别设置在通孔中，使得每个柱塞可以在其轴向方向上朝向和远离输入轴的控制臂滑动。 每个柱塞的运动受到插入到形成在柱塞上的另一贯通孔中的销的限制，该穿孔在与柱塞的轴线正交的方向上延伸。 通孔的内周面和柱塞的外周面可以容易且准确地磨削，以确保柱塞的平稳移动。

公开(公告)号：US4874183A

公开(公告)日：1989-10-17

申请号：US216183

申请日：1988-07-07

Applicant: Isamu Chikuma ,  Satoru Shimada ,  Hiroshi Eda

Inventor： Isamu Chikuma ,  Satoru Shimada ,  Hiroshi Eda

IPC: B62D7/14 ,  B62D7/15

CPC classification number: B62D7/1527

Abstract: A four-wheel steering apparatus of a vehicle has a front-wheel steering mechanism for steering front wheels, a rear-wheel steering mechanism for steering rear wheels, a steering gear mechanism operatively connected to the front-wheel steering mechanism and effecting a steering operation, a steering angle extracting mechanism operatively connected to the steering mechanism and extracting the steering angle of the front wheels, the steering angle extracting mechanism comprising a restraining member movable axially along the axis of the front wheels in response to the steering operation, and a string member fixed to the restraining member and displaceable in the lengthwise direction thereof in response to the movement of the restraining member, and rear-wheel steering angle control mechanism operatively connected to the steering angle extracting mechanism for controlling the amount and the direction of steer to be transmitted to the rear wheels, the rear-wheel steering angle control mechanism comprising a rotatable member rotatable in response to the displacement of the string member, and a transmission member movably engaged with the rotatable member and movable in conformity with the amount and the direction of rotation of the rotatable member for transmitting the amount of movement thereof to the rear-wheel steering mechanism.

Abstract translation: 车辆的四轮转向装置具有用于转向前轮的前轮转向机构，用于转向后轮的后轮转向机构，可操作地连接到前轮转向机构并进行转向操作的转向齿轮机构 ，可操作地连接到转向机构并提取前轮的转向角的转向角提取机构，所述转向角提取机构包括响应于转向操作沿着前轮的轴线轴向移动的限制部件，以及弦 构件，其被固定到限制构件并且响应于限制构件的移动而在其长度方向上移位;以及后轮转向角控制机构，其可操作地连接到转向角提取机构，用于控制转向量的数量和方向为 传递到后轮，后轮转向角控制机构 其包括可响应于弦构件的位移而可旋转的可旋转构件，以及传动构件，其与可旋转构件可移动地接合并且可移动地与可旋转构件的旋转量的量和方向一致，以将其移动量传递到 后轮转向机构。

公开(公告)号：US5236057A

公开(公告)日：1993-08-17

申请号：US755015

申请日：1991-09-04

Applicant: Shin Takehara ,  Hiroshi Ohmura ,  Ryuya Akita ,  Isamu Chikuma ,  Hiroyuki Ito ,  Hiroshi Eda

Inventor： Shin Takehara ,  Hiroshi Ohmura ,  Ryuya Akita ,  Isamu Chikuma ,  Hiroyuki Ito ,  Hiroshi Eda

IPC: B62D7/14 ,  B62D7/15

CPC classification number: B62D7/1572 ,  B62D7/148 ,  B62D7/159

Abstract: A rear wheel steering apparatus for a vehicle, comprises a hydraulic cylinder for displacing a steering rod connected to left and right rear wheels axially, a centering spring for biasing the steering rod toward a neutral position, and a centering spring cancelling mechanism for preventing a biasing force of the centering spring from acting on the steering rod. A partition wall of the hydraulic cylinder defines an oil chamber in the cylinder and is formed as a cup shape having a central concave portion which constitutes a pressure chamber of the centering spring cancelling mechanism.

公开(公告)号：US5482127A

公开(公告)日：1996-01-09

申请号：US251946

申请日：1994-06-01

Applicant: Hiroshi Eda ,  Hironobu Shiono ,  Isamu Chikuma

Inventor： Hiroshi Eda ,  Hironobu Shiono ,  Isamu Chikuma

IPC: B62D5/04 ,  F16D7/02

CPC classification number: B62D5/0409 ,  B62D5/043 ,  F16D7/025

Abstract: A power transmission device, having a frictional face and a pressure member pressed to the frictional face, is provided between the rotary shaft of a motor and a reducing mechanism of an electric power steering device, so that the power transmission is achieved utilizing a frictional force generated between the frictional face and the pressure member, before the output torque of the motor is amplified by the reducing mechanism. Consequently the power transmission device can be made simple and compact in configuration, as it is not necessary to increase the pressing force of the pressure member nor to increase the area of the frictional face.

Abstract translation: 在电动机的旋转轴和电动助力转向装置的减速机构之间设置具有摩擦面和被压向摩擦面的压力构件的动力传递装置，利用摩擦力实现动力传递 在电动机的输出转矩被减速机构放大之前，在摩擦面和压力部件之间产生。 因此，动力传递装置的构造可以简单且紧凑，因为不需要增加压力构件的按压力，也不增加摩擦面的面积。

公开(公告)号：US5445237A

公开(公告)日：1995-08-29

申请号：US363337

申请日：1994-12-23

Applicant: Hiroshi Eda ,  Kenji Someya ,  Isamu Chikuma

Inventor： Hiroshi Eda ,  Kenji Someya ,  Isamu Chikuma

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

CPC classification number: F16H55/24 ,  B62D5/0409 ,  B62D5/0421 ,  F16H57/023

Abstract: 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.

Abstract translation: 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

Applicant: Isamu Chikuma ,  Satoru Shimada ,  Hiroshi Eda

Inventor： Isamu Chikuma ,  Satoru Shimada ,  Hiroshi Eda

IPC: B62D7/15

CPC classification number: B62D7/1536

Abstract: 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

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

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

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

CPC classification number: B62D7/1536

Abstract: 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.

Abstract translation: 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

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

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

IPC: B62D7/15 ,  B62D5/06

CPC classification number: B62D7/1536

Abstract: 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.

Abstract translation: 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。