公开(公告)号：US06711965B2

公开(公告)日：2004-03-30

申请号：US10133753

申请日：2002-04-29

申请人： Masaki Tomaru ,  Isamu Chikuma ,  Sakae Matsumoto ,  Kazuya Fukuda ,  Takahiro Saito

发明人： Masaki Tomaru ,  Isamu Chikuma ,  Sakae Matsumoto ,  Kazuya Fukuda ,  Takahiro Saito

IPC分类号： B62D118

CPC分类号： B62D1/181

摘要： An electric tilt and/or telescopic steering column apparatus comprises a steering shaft having a steering wheel mounted on a rear end thereof, a steering column for rotatably supporting the steering shaft, an electric actuator for adjusting the tilt and/or telescopic position of the steering shaft by driving this steering column, and position detecting means for detecting the position of the steering shaft in a non-contact manner.

公开(公告)号：US5454438A

公开(公告)日：1995-10-03

申请号：US220545

申请日：1994-03-31

申请人： Isamu Chikuma

发明人： Isamu Chikuma

IPC分类号： B62D5/04 ,  F16H57/021 ,  H02K7/08

CPC分类号： B62D5/0409 ,  F16H57/021 ,  H02K7/081 ,  F16H2057/0213

摘要： In order to provide an electric power steering system of small size whose output shaft has little play, a pressure member of the electric-driven power steering system compresses a duplex bearing, more specifically, presses two bearing components of the duplex bearing against each other. As a result, the play which the output shaft has in each bearing is removed.

摘要翻译： 为了提供输出轴几乎没有游隙的小尺寸的电动助力转向系统，电动助力转向系统的压力构件压缩双轴承，更具体地，将双轴承轴承的两个轴承部件彼此压紧。 结果，输出轴在每个轴承中的游隙被去除。

公开(公告)号：US5236057A

公开(公告)日：1993-08-17

申请号：US755015

申请日：1991-09-04

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

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

IPC分类号： B62D7/14 ,  B62D7/15

CPC分类号： B62D7/1572 ,  B62D7/148 ,  B62D7/159

摘要： 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：US4724717A

公开(公告)日：1988-02-16

申请号：US902639

申请日：1986-09-02

申请人： Isamu Chikuma

发明人： Isamu Chikuma

IPC分类号： B62D3/12 ,  F16H55/28 ,  F16H57/12

CPC分类号： F16H55/283 ,  B62D3/123 ,  F16H55/285 ,  Y10T74/1967

摘要： A rack shaft support device is provided for rack and pinion steering of the type having a housing containing a pinion rotatable by the rotating operation of a steering wheel and a rack shaft engaged with the pinion and axially movable by the rotation thereof to steer wheels. The device comprises an antifriction support including an antifriction roller contacting the rack shaft, a mechanism biasing the antifriction support toward the pinion, a vibration absorbing member urged against the antifriction member and absorbing vibration of the rack shaft by friction, and a limiting member disposed concentrically about the rack shaft and limiting transverse displacement of the rack shaft to a predetermined amount.

摘要翻译： 提供了一种齿条轴支撑装置，用于具有壳体的齿条和小齿轮转向，该壳体包含通过方向盘的旋转操作可旋转的小齿轮和与小齿轮啮合的齿条轴，并通过其旋转轴向移动以转向轮。 该装置包括一个减摩支架，它包括一个与齿条轴接触的减摩辊，一个将减摩支架朝向小齿轮偏置的机构，一个抵靠摩擦件推动的吸振件，并通过摩擦吸收齿条轴的振动，同时设置一个限制件 围绕齿条轴并且将齿条轴的横向位移限制到预定量。

公开(公告)号：US4601357A

公开(公告)日：1986-07-22

申请号：US714530

申请日：1985-03-21

申请人： Akihiko Miyoshi ,  Shigeki Furutani ,  Isamu Chikuma ,  Satoru Shimada

发明人： Akihiko Miyoshi ,  Shigeki Furutani ,  Isamu Chikuma ,  Satoru Shimada

IPC分类号： B62D5/26 ,  B62D6/02 ,  B62D7/14 ,  B62D7/15 ,  B62D5/00

CPC分类号： B62D7/1545

摘要： A four-wheel steering system for a vehicle has a rear wheel steering ratio changing means which changes the rear wheel steering ratio in accordance with rear wheel steering ratio characteristics predetermined according to the vehicle speed, and an inhibiting means which inhibits the rear wheel steering ratio changing means from changing the rear wheel steering ratio when the steering wheel is turned right or left from its neutral position.

摘要翻译： 一种用于车辆的四轮转向系统具有根据根据车速预定的后轮转向比特性来改变后轮转向比的后轮转向比改变装置，以及抑制后轮转向比 当方向盘从其中立位置右转或左转时改变后轮转向比的改变方式。

公开(公告)号：US06237955B1

公开(公告)日：2001-05-29

申请号：US09400539

申请日：1999-09-21

申请人： Kenji Sato ,  Isamu Chikuma ,  Sakae Matsumoto

发明人： Kenji Sato ,  Isamu Chikuma ,  Sakae Matsumoto

IPC分类号： B62D199

CPC分类号： B62D1/192 ,  B62D1/195

摘要： A shock absorbing steering column apparatus comprise a steering column member admitting an insertion of a steering shaft, and a shock absorbing member for permitting the steering column member to displace in an axial direction while being plastically deformed by an impact load applied in the axial direction of the steering column member. The steering column member and the shock absorbing member are integrally formed of a non-ferrous metal.

摘要翻译： 一种减震转向柱装置，包括允许转向轴插入的转向柱构件和用于允许转向柱构件在轴向方向上施加的冲击载荷塑性变形的减震构件， 转向柱构件。 转向柱构件和减震构件由有色金属一体地形成。

公开(公告)号：US06237954B1

公开(公告)日：2001-05-29

申请号：US09362193

申请日：1999-07-28

申请人： Kenji Sato ,  Isamu Chikuma ,  Sakae Matsumoto ,  Kiyoharu Higashino

发明人： Kenji Sato ,  Isamu Chikuma ,  Sakae Matsumoto ,  Kiyoharu Higashino

IPC分类号： B62D199

CPC分类号： B62D1/184

摘要： An apparatus for supporting a steering column has a cross member spanned over two right-and-left walls of a car body at a portion just anterior to a driver's seat, a support bracket integrally fixedly connected to a portion, aligned with the driver's seat, of an intermediate portion of the cross member, a supported bracket fixedly connected to an intermediate portion of the steering column, and a connecting member for connecting the support bracket and the supported bracket to each other with no intermediary of other brackets.

摘要翻译： 用于支撑转向柱的装置具有跨越驾驶员座椅前方的车身的两个左右壁上的横向构件，与驱动器座椅对准的部分一体地固定连接的支撑架， 横向构件的中间部分，固定地连接到转向柱的中间部分的支撑支架，以及用于将支撑支架和支撑支架彼此连接而不用其他支架的中间部分的连接构件。

公开(公告)号：US5685390A

公开(公告)日：1997-11-11

申请号：US401894

申请日：1995-03-10

申请人： Isamu Chikuma ,  Kenji Someya ,  Hiroshi Eda

发明人： Isamu Chikuma ,  Kenji Someya ,  Hiroshi Eda

IPC分类号： B62D5/04 ,  F16C33/37

CPC分类号： F16C33/3713 ,  B62D5/0448 ,  Y10T74/1872 ,  Y10T74/19781

摘要： An electrically-operated power steering apparatus comprises a steering shaft, a rack shaft capable of linear movement for turning a steering running wheel a, rack-pinion gear for coupling the steering shaft with the rack shaft, and a ball screw mechanism including a screw groove formed on the rack shaft, a rotary ball screw nut fitted on the rack shaft, and plural balls positioned in a rolling path. The plural balls are comprised of bulbs of a larger diameter and balls of a smaller diameter, which are alternately arranged, and the smaller diameter is within a defined range.

摘要翻译： 电动动力转向装置包括转向轴，能够线性运动的转向转向轮a的齿条轴，用于将转向轴与齿条轴联接的齿条小齿轮，以及包括螺旋槽的滚珠丝杠机构 形成在齿条轴上，安装在齿条轴上的旋转滚珠丝杠螺母和位于滚动路径中的多个滚珠。 多个球由直径较大的球体和直径较小的球组成，交替排列，较小直径在规定范围内。

公开(公告)号：US5508921A

公开(公告)日：1996-04-16

申请号：US470572

申请日：1995-06-07

申请人： Isamu Chikuma ,  Hiroshi Eda ,  Hiroyuki Kanou ,  Nobuyasu Ando ,  Kaoru Kiyono

发明人： Isamu Chikuma ,  Hiroshi Eda ,  Hiroyuki Kanou ,  Nobuyasu Ando ,  Kaoru Kiyono

IPC分类号： B62D7/15 ,  B60K17/34

CPC分类号： B62D7/159 ,  B62D7/1581

摘要： A four-wheel steering apparatus comprises a front wheel steering angle sensor for detecting the steering angles given to the front wheels, a vehicle speed sensor for detecting vehicle speeds, a rear wheel output shaft for giving steering angles to the rear wheels by being displaced it in the axial direction, a centering spring having the resiliency enabling the rear wheel output shaft to be returned to the neutral position, an electric motor for causing the rear wheel output shaft to be displaced in the axial direction against the resiliency of the centering spring, and a controller for controlling the energizing of the electric motor on the basis of the signals from the front wheel steering sensor and vehicle speed sensor, the controller adjusting the output torque of the electric motor on the basis of the signals from the front wheel steering sensor and vehicle speed sensor to control the rear wheel output shaft to be displaced for a desired amount by open loop control.

摘要翻译： 四轮转向装置包括用于检测给予前轮的转向角的前轮转向角传感器，用于检测车速的车速传感器，用于通过使后轮向后轮提供转向角的后轮输出轴 在轴向方向上具有能够使后轮输出轴返回到中立位置的弹性的定心弹簧，用于使后轮输出轴在轴向上抵抗中心弹簧的弹性而位移的电动机， 以及控制器，其基于来自前轮转向传感器和车速传感器的信号来控制电动机的通电，所述控制器基于来自前轮转向传感器的信号来调节电动机的输出转矩 和车速传感器，以通过开环控制来控制后轮输出轴移动所需量。

公开(公告)号：US4730687A

公开(公告)日：1988-03-15

申请号：US813665

申请日：1985-12-26

申请人： Isamu Chikuma ,  Hiroshi Eda

发明人： Isamu Chikuma ,  Hiroshi Eda

IPC分类号： B62D6/02 ,  B62D5/08

CPC分类号： B62D6/02

摘要： A working fluid passage supplying a fixed flow rate is divided into passages so that a flow rate ratio between the two passages is varied by a variable orifice valve based on a detection signal of a physical quantity factor which varies depending on travelling and steering conditions of the vehicle. The working fluid from one of the two passages is supplied to a steering assisting force generating mechanism through a changeover valve which changes over the passages in accordance with a direction of steering torque acting on the input shaft steering the vehicle, to generate the steering assisting force. The working fluid from the other passage is supplied to a steering reaction force generating mechanism through the changeover valve, and by generating the steering reaction force to the input shaft, the steering force is controlled to an adequate condition corresponding to the physical quantity factor. Furthermore, the passage of the variable orifice valve at the side of the steering reaction force generating mechanism is connected to a drain through a changeover valve or a pressure regulating valve to thereby control the steering feeling to a more adequate condition, and at the same time, when the vehicle is travelling at a low speed, the generation of the steering reaction force by the steering reaction force generating mechanism is suppressed, or the steering reaction force of the steering reaction force generating mechanism is maintained at a constant value. Moreover, the steering angle ratio is regulated by rotating the input shaft in the same direction as the steering direction by a steering angle ratio varying mechanism in correspondence with the reaction force of the steering reaction force generating mechanism, and thus optimum steering feeling can be obtained. Further, a change in the exciting current due to an internal resistance change of an electromagnetic solenoid is suppressed by a voltage correction circuit provided in a control unit for controlling the electromagnetic solenoid of the variable orifice valve, and an appropriate steering force can be generated.