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1. 发明授权

US5341891A Motor-driven power steering apparatus and method 失效
标题翻译：电动助力转向装置及方法
公开(公告)号：US5341891A
公开(公告)日：1994-08-30
申请号：US946598
申请日：1992-09-18
申请人： Shunichi Wada , Tadayuki Hara , Yasuo Naito , Shinichi Kohge , Kazuhisa Nishino
发明人： Shunichi Wada , Tadayuki Hara , Yasuo Naito , Shinichi Kohge , Kazuhisa Nishino
IPC分类号： B62D6/02 , B62D5/04 , B62D5/00
CPC分类号： B62D5/0478
摘要： A motor-driven power steering apparatus and method for a vehicle are able to avoid frequent on-off operations of an electromagnetic clutch 14 as much as possible, which connects or disconnects a motor 13 with or from a steering system, thus improving the durability of the clutch 14 and suppressing the generation of undesirable noise and shocks upon connection and disconnection of the clutch 14. A clutch controller 191 controls a clutch current Ic supplied to the clutch 14 based on the vehicle speed V in such a manner that it sets the clutch current Ic to a first predetermined clutch current level I(V) so as to place the clutch into a substantially engaged state when the vehicle speed V is less than a first predetermined vehicle speed Vo, and to a second predetermined clutch current level Icr which is less than the first predetermined clutch current level I(V) so as to place the clutch into a partially engaged state when the vehicle speed V is equal to or greater than the first predetermined vehicle speed Vo. Preferably, the clutch current Ic is set to a third predetermined clutch current level Ico which is less than the second predetermined clutch current level Icr so as to substantially disengage said electromagnetic clutch when a steering torque T is equal to or greater than a predetermined value To when the vehicle speed is equal to or greater than the first predetermined value Vo.
摘要翻译：一种用于车辆的马达驱动的动力转向装置和方法能够尽可能地避免电磁离合器14的频繁的断开操作，其将马达13与转向系统连接或断开，从而提高了电动离合器14的耐久性离合器14，并且抑制在离合器14的连接和断开时产生不期望的噪音和冲击。离合器控制器191基于车速V 1控制提供给离合器14的离合器电流Ic，使得它将离合器电流Ic到第一预定离合器电流水平I（V），以便当车速V小于第一预定车速Vo时将离合器置于基本接合状态，并将第二预定离合器电流水平Icr设置为小于第一预定离合器电流水平I（V），以便当车速V等于或大于第一预定值时将离合器置于部分接合状态开采车速Vo。优选地，离合器电流Ic被设定为小于第二预定离合器电流水平Icr的第三预定离合器电流水平Ico，以便当转向转矩T等于或大于预定值To时，基本上使所述电磁离合器脱离当车速等于或大于第一预定值Vo时。

2. 发明授权

US5039926A Motorized power steering apparatus 失效
公开(公告)号：US5039926A
公开(公告)日：1991-08-13
申请号：US591162
申请日：1990-10-01
申请人： Mitsuharu Morishita , Shinichi Kohge , Kazuhisa Nishino
发明人： Mitsuharu Morishita , Shinichi Kohge , Kazuhisa Nishino
IPC分类号： B62D6/00 , B62D5/04
CPC分类号： B62D5/049
摘要： A motorized power steering apparatus is equipped with a torque sensor including a primary potentiometer for detecting a steering torque applied to the steering wheel by a driver. The torque sensor further includes an auxiliary potentiometer so as to detect variations in the output voltage of a constant voltage power supply to the potentiometers. When there is a difference between the outputs of the primary and auxiliary potentiometers which is greater than a prescribed level, a fail-safe relay is turned off to nullify the power steering operation of a motor. When the output voltage of the power supply for supplying a constant voltage to the primary and auxiliary potentiometers drops below or rises above a predetermined level, the output voltage of the auxiliary potentiometer, which is not used for power steering control, is raised. This increases the difference between the output voltages of the potentiometers to a detectable level, whereby a fail-safe operation is carried out to nullify the power steering operation of the electric motor. Thus, the steering wheel is prevented, in a reliable manner, from being turned spontaneously or unintentionally against the driver's will due to variations in the neutral point of the torque sensor resulting from fluctuations in the voltage supplied thereto.

3. 发明授权

US4666010A Power steering apparatus 失效
标题翻译：动力转向装置
公开(公告)号：US4666010A
公开(公告)日：1987-05-19
申请号：US772676
申请日：1985-09-05
申请人： Mitsuharu Morishita , Tadayuki Hara , Shinichi Kohge , Tetsushi Watanabe , Yasuki Ikari
发明人： Mitsuharu Morishita , Tadayuki Hara , Shinichi Kohge , Tetsushi Watanabe , Yasuki Ikari
IPC分类号： B62D5/04 , B62D6/10
CPC分类号： B62D6/10 , B62D5/043 , B62D5/0463 , B62D5/0478
摘要： A power steering apparatus for an automobile or other vehicle has a motor which rotates a steering shaft through an electromagnetic clutch and a worm gear reduction gear. When the clutch is engaged, the rotation of the motor causes the rotation of the steering shaft. When the clutch is disengaged, the steering shaft is not connected to either the reduction gear or the motor and can therefore be rotated manually with the same force as for a manual steering apparatus. The reduction gear and the electromagnetic clutch are coaxially disposed around the steering shaft.
摘要翻译：用于汽车或其他车辆的动力转向装置具有使转向轴通过电磁离合器和蜗轮减速齿轮旋转的电动机。当离合器接合时，电机的旋转引起转向轴的旋转。当离合器分离时，转向轴没有连接到减速齿轮或电动机上，因此可以用与手动转向装置相同的力手动旋转。减速齿轮和电磁离合器同轴地设置在转向轴周围。

4. 发明授权

US4856323A Steering torque detecting device 失效
公开(公告)号：US4856323A
公开(公告)日：1989-08-15
申请号：US260276
申请日：1988-10-20
申请人： Mitsuharu Morishita , Shinichi Kohge , Tadayuki Hara , Yasuaki Hata , Hisato Umemaru
发明人： Mitsuharu Morishita , Shinichi Kohge , Tadayuki Hara , Yasuaki Hata , Hisato Umemaru
IPC分类号： B62D15/02 , G01M19/00
CPC分类号： B62D6/10
摘要： A steering torque detecting device comprises a steering shaft consisting of an input shaft and an output shaft, a torsion bar provided between the input shaft and the output shaft, a torque detecting unit for converting a quantity of torsion produced in the torsion bar into an electric output, an electricity collecting unit comprising slip rings and brushes which takes the electric output and supplies an electric power from an outer power source, bearings for supporting the input and output shaft on the same axial line, and a housing supporting the bearings, a printed wiring board in a circular plate form which is provided at its one surface with a resistance layer and an output electrode radially spaced apart from the resistance layer, the resistance layer and the output electrode constituting a potentiometer, and a slider having a portion extending in the radial direction of the circular printed wiring board so as to have contacting areas with a small width to the resistance layer and the output electrode.

5. 发明授权

US4838074A Steering torque detecting device 失效
标题翻译：转向力矩检测装置
公开(公告)号：US4838074A
公开(公告)日：1989-06-13
申请号：US177085
申请日：1988-04-04
申请人： Mitsuharu Morishita , Shinichi Kohge , Tadayuki Hara , Yasuaki Hata , Hisato Umemaru
发明人： Mitsuharu Morishita , Shinichi Kohge , Tadayuki Hara , Yasuaki Hata , Hisato Umemaru
IPC分类号： B62D15/02
CPC分类号： B62D6/10
摘要： A steering torque detecting device includes a steering shaft consisting of an input shaft and an output shaft, a torsion bar provided between the input shaft and the output shaft, a torque detecting unit for converting a quantity of torsion produced in the torsion bar into an electric output, an electricity collecting unit including slip rings and brushes which takes the electric output and supplies an electric power from an outer power source, bearings for supporting the input and output shaft on the same axial line, and a housing supporting the bearings, a printed wiring board in a circular plate form which is provided at its one surface with a resistance layer and an output electrode radially spaced apart from the resistance layer, the resistance layer and the output electrode constituting a potentiometer, and a slider having a portion extending in the radial direction of the circular printed wiring board so as to have contacting areas with a small width to the resistance layer and the output electrode.

6. 发明授权

US4757869A Motor-driven power steering system for a vehicle 失效
标题翻译：用于车辆的电动机动力转向系统
公开(公告)号：US4757869A
公开(公告)日：1988-07-19
申请号：US22211
申请日：1987-03-05
申请人： Mitsuharu Morishita , Tadayuki Hara , Shinichi Kohge , Koji Terauchi
发明人： Mitsuharu Morishita , Tadayuki Hara , Shinichi Kohge , Koji Terauchi
IPC分类号： B62D5/06 , B62D5/04
CPC分类号： B62D5/046 , B62D5/0478
摘要： A motor-driven power steering system for a vehicle preventing transmission of operating noises of the motor to the interior of the passenger compartment of the vehicle and for suppressing the generation of radio wave noises: a speed sensor for detecting the travelling speed of the vehicle; a torque sensor mounted on a steering shaft for detecting turning force imparted to the steering wheel by an operator, a first pinion operatively connected with the steering shaft and adapted to be driven by the steering wheel through the intermediary of the steering shaft, a rack operatively connected through tie rods with a pair of steerable road wheels and having a first rack tooth portion and a second rack tooth portion formed thereon, a second pinion being in meshing engagement with the second rack tooth portion on the rack, a motor operatively connected with the second pinion for power assisting the steering motion of the rack induced by the operator a first electromagnetic clutch interposed between the motor and the second pinion for transmitting power therebetween substantially in proportion to the intensity of current supplied thereto, a second clutch interposed between the motor and the second pinion for selectively establishing or disconnecting the operative connection between the motor and the second pinion, and a control unit adapted to receive output signals from the speed sensor and the torque sensor for controlling the operations of the motor, the first clutch and the second clutch.

7. 发明授权

US4635741A Power steering apparatus 失效
标题翻译：动力转向装置
公开(公告)号：US4635741A
公开(公告)日：1987-01-13
申请号：US770184
申请日：1985-08-28
申请人： Mitsuharu Morishita , Tadayuki Hara , Shinichi Kohge , Tetsushi Watanabe , Yasuki Ikari
发明人： Mitsuharu Morishita , Tadayuki Hara , Shinichi Kohge , Tetsushi Watanabe , Yasuki Ikari
IPC分类号： B62D1/16 , B62D5/04 , B62D6/10 , G01L5/22
CPC分类号： B62D6/10
摘要： A power steering apparatus for an automobile or other vehicle has a steering shaft constituted by an input section and an output section connected by a torsion bar. A mechanism for detecting when a driver is imparting torque to the steering wheel of the vehicle is constituted by a potentiometer having a resistive element and a wiper arm, one of which is mounted on the output section and the other of which is mounted on the torsion bar so that the wiper arm will rotate with respect to the resistive element and the resistance of the potentiometer will change when the torsion bar is rotated with respect to the output section. The potentiometer is electrically connected to a preamplifier mounted on the steering shaft, and the preamplifier is electrically connected to slip rings through which its output can be supplied to a stationary control unit. The electrical output of the potentiometer is independent of the speed of rotation of the steering wheel.
摘要翻译：用于汽车或其他车辆的动力转向装置具有由输入部分和由扭杆连接的输出部分构成的转向轴。用于检测驾驶员何时向车辆的方向盘施加扭矩的机构由具有电阻元件和刮水器臂的电位计构成，其中一个安装在输出部分上，另一个安装在扭转使得雨刮臂相对于电阻元件旋转，并且当扭杆相对于输出部分旋转时，电位器的电阻将改变。电位器电连接到安装在转向轴上的前置放大器，并且前置放大器电连接到滑环，通过该滑环，其输出可以被提供给静止控制单元。电位器的电气输出与方向盘的转速无关。

8. 发明授权

US4875367A Steering torque detecting device 失效
公开(公告)号：US4875367A
公开(公告)日：1989-10-24
申请号：US260298
申请日：1988-10-20
申请人： Mitsuharu Morishita , Shinichi Kohge , Tadayuki Hara , Yasuaki Hata , Hisato Umemaru
发明人： Mitsuharu Morishita , Shinichi Kohge , Tadayuki Hara , Yasuaki Hata , Hisato Umemaru
IPC分类号： B62D15/02
CPC分类号： B62D6/10
摘要： A steering torque detecting device includes a steering shaft consisting of an input shaft and an output shaft, a torsion bar provided between the input shaft and the output shaft, a torque detecting unit for converting a quantity of torsion produced in the torsion bar into an electric output, an electricity collecting unit including slip rings and brushes which takes the electric output and supplies an electric power from an outer power source, bearings for supporting the input and output shaft on the same axial line, and a housing supporting the bearings, a printed wiring board in a circular plate form which is provided at its one surface with a resistance layer and an output electrode radially spaced apart from the resistance layer, the resistance layer and the output electrode constituting a potentiometer, and a slider having a portion extending in the radial direction of the circular printed wiring board so as to have contacting areas with a small width to the resistance layer and the output electrode.

9. 发明授权

US5602451A Electric power steering circuit device 失效
标题翻译：电动助力转向电路装置
公开(公告)号：US5602451A
公开(公告)日：1997-02-11
申请号：US496163
申请日：1995-06-28
申请人： Shinichi Kohge , Shunichi Wada
发明人： Shinichi Kohge , Shunichi Wada
IPC分类号： B60R16/02 , B60R16/023 , B62D5/04 , H02P7/00 , H02P7/29 , H03K17/00 , H05K5/00 , H05K7/20 , H05K3/30
CPC分类号： B60R16/0239 , B62D5/0406 , H02P7/04 , H05K5/0043
摘要： An electric power steering circuit device comprising a microcomputer, a bridge circuit for switching, a motor current output by a battery to drive a motor based on an output signal from the microcomputer, wiring patterns for flowing a large current, an insulated printed-circuit board for mounting the microcomputer, and a heat radiating plate for mounting thereon on the semiconductor switching elements. The bridge circuit includes a plurality of semiconductor switching elements, and the wiring patterns comprise metal plates fixed by molding. The heat radiating plate and the insulation printed-circuit board are overlapped through a predetermined space.
摘要翻译：一种电动助力转向电路装置，包括微型计算机，用于切换的电桥电路，基于来自微计算机的输出信号驱动电动机的电池输出的电动机电流，用于流动大电流的布线图案，绝缘印刷电路板用于安装微型计算机，以及用于安装在半导体开关元件上的散热板。桥接电路包括多个半导体开关元件，并且布线图案包括通过模制固定的金属板。散热板和绝缘印刷电路板通过预定的空间重叠。

10. 发明授权

US5335979A Control device for vehicle including anti-skid braking system and power steering control system 失效
标题翻译：车辆控制装置包括防滑制动系统和动力转向控制系统
公开(公告)号：US5335979A
公开(公告)日：1994-08-09
申请号：US132281
申请日：1993-10-06
申请人： Yasuo Naitou , Shunichi Wada , Kazumichi Tsutsumi , Shinichi Kohge
发明人： Yasuo Naitou , Shunichi Wada , Kazumichi Tsutsumi , Shinichi Kohge
IPC分类号： B60T8/62 , B60T8/88 , B62D5/04 , B62D6/00 , B60T8/32
CPC分类号： B62D5/0481 , B60T8/885 , B62D5/0493 , B60T2270/414 , Y10S303/09
摘要： A unified control device for a vehicle including an anti-skid braking system and power steering control system is controlled by two microcomputers (4B and 24B). On the basis of the outputs of the torque sensors (1a and 1b, etc.), the first microcomputer (4B) determines the driving direction and torque of the DC motor (9) providing the assisting steering torque for the steering wheel, and outputs the torque signal (T) and the first direction signal (D1) for the DC motor (9). The second microcomputer (24B) generates the brake operation signal (B) on the basis of the outputs of the road wheel velocity sensors (21a through 21d) and the brake switch (22). Further, on the basis of the output of the torque sensors (1a and 1b), the microcomputer (24B) determines the direction of the DC motor (9), and outputs the second direction signal (D2). The motor drive circuit (8) drives the DC motor (9) in accordance with the torque signal (T) and the direction command signal (D), which is output from the AND circuit (40) only when the first and second direction signals (D1 and D2) coincide. Further, the microcomputers (4B and 24B) output first and second fail-safe relay energization signals (F1 and F2), respectively, when the power steering control system and the anti-skid braking system are judged to be operating normally. The power supply control circuit (42) immediately opens the fail-safe relay unit (6B) when neither the first and second signals (F1 and F2) are supplied. However, in the case where only one of the first and second signals (F1 and F2) are supplied, the power supply control circuit (42) defers the interruption of the fail-safe relay unit (6B) until the vehicle stops.
摘要翻译：一种用于包括防滑制动系统和动力转向控制系统的车辆的统一控制装置由两台微型计算机（4B和24B）控制。基于转矩传感器（1a，1b等）的输出，第一微型计算机（4B）确定提供方向盘的辅助转向转矩的直流电动机（9）的驱动方向和转矩，并输出转矩信号（T）和直流电动机（9）的第一方向信号（D1）。第二微型计算机（24B）根据路轮速度传感器（21a〜21d）和制动开关（22）的输出生成制动操作信号（B）。此外，基于转矩传感器（1a，1b）的输出，微型计算机（24B）确定直流电动机（9）的方向，并输出第二方向信号（D2）。马达驱动电路（8）仅在第一和第二方向信号（8）从AND电路（40）输出的转矩信号（T）和方向指令信号（D）驱动直流电动机（9）（D1和D2）重合。此外，当动力转向控制系统和防滑制动系统被判断为正常运行时，微型计算机（4B和24B）分别输出第一和第二故障安全继电器通电信号（F1和F2）。当不提供第一和第二信号（F1和F2）时，电源控制电路（42）立即打开故障安全继电器单元（6B）。然而，在仅提供第一和第二信号（F1和F2）中的仅一个的情况下，电源控制电路（42）延迟故障安全继电器单元（6B）的中断，直到车辆停止为止。

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