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1. 发明授权

US5020616A Power steering apparatus 失效
标题翻译：动力转向装置
公开(公告)号：US5020616A
公开(公告)日：1991-06-04
申请号：US360912
申请日：1989-03-10
申请人： Tadashi Yagi , Masahiko Noguchi , Hajime Kozuka , Mitsuharu Morishita , Masayoshi Onishi
发明人： Tadashi Yagi , Masahiko Noguchi , Hajime Kozuka , Mitsuharu Morishita , Masayoshi Onishi
IPC分类号： B62D1/16 , B62D5/04 , B62D6/10
CPC分类号： B62D6/10 , B62D1/16 , B62D5/0409 , B62D5/0469
摘要： A power steering apparatus for power steering the steerable wheels of a vehicle is disclosed which includes a steering column having one end connected with a steering wheel and the other end operatively connected with the steerable wheels; a cylindrical housing surrounding the steering column and providing a space therebetween; a torque sensor disposed in the housing for detecting a steering torque exerted on the steering wheel by a driver; a conductor or lead line wound around the steering column and accommodated in the housing, the lead line having one end electrically connected to the torque sensor and the other end to terminals which are disposed outside the steering column; and a motor installed on the housing and operatively connected with the steering column for power assisting the steering effort exerted on the steering wheel by the driver, the motor being driven to run in accordance with the steering torque detected by the torque sensor. A rotation limiting mechanism is provided between the steering column and the housing for limiting the rotation of the steering column within a predetermined range.
摘要翻译： PCT No.PCT / JP88 / 00915 Sec。 371日期：1989年3月10日 102（e）日期1989年3月10日PCT提交1988年9月9日PCT公布。出版物WO89 / 02387 公开了一种用于动力转向车辆的转向轮的动力转向装置，其包括转向柱，转向柱的一端与方向盘连接，另一端与转向轮可操作地连接; 围绕转向柱的圆柱形壳体并在其间提供一个空间; 设置在壳体中的扭矩传感器，用于检测由驾驶员施加在方向盘上的转向扭矩; 引导线缠绕在转向柱上并容纳在壳体中，引线的一端电连接到转矩传感器，另一端连接到设置在转向柱外部的端子; 以及安装在壳体上并与转向柱可操作地连接的电动机的电动机，用于辅助由驾驶员施加在方向盘上的转向力，电动机根据由转矩传感器检测到的转向转矩被驱动运行。在转向柱和壳体之间提供旋转限制机构，用于将转向柱的旋转限制在预定范围内。

2. 发明授权

US4967858A Power steering apparatus with unitary torque sensor and worm driving housing 失效
标题翻译：动力转向装置具有单一转矩传感器和蜗轮传动壳体
公开(公告)号：US4967858A
公开(公告)日：1990-11-06
申请号：US360931
申请日：1989-03-13
申请人： Yoshimi Kotake , Hajime Kozuka , Mitsuharu Morishita , Tadayuki Hara
发明人： Yoshimi Kotake , Hajime Kozuka , Mitsuharu Morishita , Tadayuki Hara
IPC分类号： B62D5/04 , B62D6/10
CPC分类号： B62D6/10 , B62D5/0409
摘要： A power steering apparatus includes a motor 5 connected through a clutch 6 and a worm gear mechanism 50,51 with a steering column 12. A multi-lead strap 46 is wound around the steering column within a first cylindrical housing 23 for electrically connecting a torque sensor 4 to terminals disposed outside the steering column. The worm gear mechanism includes a worm wheel 50 fitted on the steering column in the first housing, and a worm shaft 51 in mesh with the worm wheel and disposed in a second cylindrical housing 54 adjacent the first housing. The second housing has one end closed and the other end open. The worm shaft is rotatably supported at one end by a first bearing 52 press fitted in the closed end of the second housing and at its other end, which is connected with the clutch, by a second bearing 53 fixedly mounted thereon, such that the worm shaft can be axially removed from the second housing through its open end.
摘要翻译： PCT No.PCT / JP88 / 00914 Sec。 371日期1989年3月13日 102（e）日期1989年3月13日PCT提交1988年9月9日PCT公布。出版物WO89 / 02386 日本，1989年3月23日。动力转向装置包括通过离合器6连接的马达5和具有转向柱12的蜗轮机构50,51。多引线带46围绕转向柱卷绕在第一圆柱体壳体23，用于将转矩传感器4电连接到设置在转向柱外部的端子。蜗轮机构包括安装在第一壳体中的转向柱上的蜗轮50和与蜗轮啮合的蜗杆轴51，并设置在与第一壳体相邻的第二圆柱形壳体54中。第二个壳体的一端封闭，另一端开放。蜗杆轴通过第二轴承52可旋转地支承在第一轴承52上，第一轴承52被压配合在第二壳体的封闭端，并且在其另一端与离合器连接，第二轴承53固定地安装在其上，轴可以通过其开口端从第二壳体轴向移除。

3. 发明授权

US4886136A Motor-driven type power assisted steering control apparatus 失效
标题翻译：电动式助力转向控制装置
公开(公告)号：US4886136A
公开(公告)日：1989-12-12
申请号：US136757
申请日：1987-12-22
申请人： Hajime Kozuka , Naoki Saito , Mitsuharu Morishita , Shinichi Kohge
发明人： Hajime Kozuka , Naoki Saito , Mitsuharu Morishita , Shinichi Kohge
IPC分类号： B62D6/02 , B62D5/04 , B62D5/06 , B62D6/00 , B62D119/00
CPC分类号： B62D5/049
摘要： A motor-driven type power assisted steering control apparatus has a torque sensor which is provided with first and second displacement-electric signal converting units and a control unit which is adapted to break a motor current and to interrupt application of a voltage to an electromagnetic clutch as soon as abnormality in the torque sensor is detected on the basis of the electric signals of the first and second displacement-electric signal converting units.

4. 发明授权

US5040630A Power steering system of motor drive type 失效
标题翻译：电机驱动型动力转向系统
公开(公告)号：US5040630A
公开(公告)日：1991-08-20
申请号：US293037
申请日：1989-01-03
申请人： Mitsuharu Morishita , Kosaku Uota , Kazuhisa Nishino
发明人： Mitsuharu Morishita , Kosaku Uota , Kazuhisa Nishino
IPC分类号： B62D5/04
CPC分类号： B62D5/0469 , B62D5/0463
摘要： The power steering system of this invention has a motor which provides auxiliary torque for the steering shaft to assist in steering.The maximum level of the motor current is varied in response to the mean motor current at predetermined intervals of time so as to regulate the maximum motor current and thereby prevent overheating or burning of the motor when, for example, the steering wheel is held for a long time in an extreme position.

5. 发明授权

US4991676A Motorized power steering apparatus 失效
公开(公告)号：US4991676A
公开(公告)日：1991-02-12
申请号：US408334
申请日：1989-09-18
申请人： Mitsuharu Morishita
发明人： Mitsuharu Morishita
IPC分类号： B62D6/00 , B62D5/04
CPC分类号： B62D5/0463
摘要： A motorized power steering apparatus for a vehicle has a torque sensor which generates an output voltage corresponding to a steering torque exerted by the driver of the vehicle. A motor controller controls the output torque of a drive motor which generates an auxiliary steering force corresponding to the output voltage of the torque sensor. The motor controller is a self-excited pulse width modulation circuit with feedback from the motor which supplies the motor with drive pulses having a pulse width modulated by the output voltage of the torque sensor.

6. 发明授权

US4989683A Motorized power steering apparatus 失效
标题翻译：电动动力转向装置
公开(公告)号：US4989683A
公开(公告)日：1991-02-05
申请号：US407988
申请日：1989-09-15
申请人： Mitsuharu Morishita
发明人： Mitsuharu Morishita
IPC分类号： B62D6/02 , B62D5/04
CPC分类号： B62D5/0463
摘要： A motorized power steering apparatus for a vehicle has a torque sensor which generates an output voltage proportional to a steering torque exerted by the driver of the vehicle and a supply voltage. A motor controller controls the output torque of a drive motor which generates an auxiliary steering force corresponding to the output voltage of the torque sensor. The supply voltage for the torque sensor is decreased as the vehicle speed increases, so that the output torque of the motor for a given steering torque decreases as the vehicle speed increases.

7. 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.

8. 发明授权

US4837690A 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：US4837690A
公开(公告)日：1989-06-06
申请号：US40813
申请日：1987-04-21
申请人： Mitsuharu Morishita , Shinichi Kohge
发明人： Mitsuharu Morishita , Shinichi Kohge
IPC分类号： B62D6/02 , B62D5/04 , B62D7/14
CPC分类号： B62D5/0481 , B62D5/0439 , B62D5/0478
摘要： A motor-driven power steering system for a vehicle capable of preventing abrupt change in the steering motion or torque an operator even when the battery has been suddenly depleted or excessively discharged during travel of the vehicle, thereby avoiding any possible panic resulting from sudden loss of power assist. The motor-driven power steering system comprises a motor connected to be energized by the battery for power assisting steering motion of the operator, an electromagnetic sliding clutch connected to continuously change the power-assisting force transmitted from the motor to steerable road wheels in accordance with the intensity of current supplied thereto from the battery, a torque sensor for detecting operator-induced steering torque, a battery sensor for detecting a condition of charge of the battery, and a control unit connected to control both the voltage imposed on the motor and the current supplied to the electromagnetic sliding clutch such that they are made zero if the battery has been depleted, while on the other hand, at least one of the motor voltage and the clutch current is gradually reduced if the battery is insufficiently charged. An electromagnetic switching clutch may be provided to be switched on when the traveling speed of the vehicle is less than a predetermined level, but switched off when the travelling speed of the vehicle is above the predetermined level or if the battery has been depleted. An alarm device may also be provided for warning the operator of the depletion or insufficient charge of the battery.
摘要翻译：一种用于车辆的电动机动力转向系统，其能够防止在车辆行驶期间电池突然耗尽或过度排放的操作者的转向运动或扭矩的突然变化，从而避免由于突然的损失导致的任何可能的恐慌动力辅助马达驱动的动力转向系统包括电动机，其连接以由电池供电以辅助操作者的转向运动，电磁滑动离合器，其连接以将根据电动机传递的电动辅助力连续地改变为可转向的车轮从电池供给的电流的强度，用于检测操作者引导的转向扭矩的扭矩传感器，用于检测电池的充电状况的电池传感器，以及连接以控制施加在电动机上的电压的控制单元电流被提供给电磁滑动离合器，使得如果电池已经耗尽，则它们变为零，而另一方面，如果电池充电不足，则马达电压和离合器电流中的至少一个逐渐减小。当车辆的行驶速度小于预定水平时，电动切换离合器可被设置为接通，而当车辆的行驶速度高于预定水平时或者如果电池已经耗尽时，电磁切换离合器被切断。还可以提供报警装置，用于警告操作者电池的耗尽或充电不足。

9. 发明授权

US4736810A Fail safe method and system for motor driven power steering apparatus 失效
标题翻译：电机驱动动力转向装置的故障安全方法和系统
公开(公告)号：US4736810A
公开(公告)日：1988-04-12
申请号：US60891
申请日：1987-06-12
申请人： Mitsuharu Morishita , Shinichi Kohge
发明人： Mitsuharu Morishita , Shinichi Kohge
IPC分类号： B62D5/06 , B62D5/04
CPC分类号： B62D5/0487
摘要： A fail safe system for a motor driven power steering apparatus comprises a DC motor for subsidiarily energized said steering apparatus; a handle for receiving steering rotary force to produce a corresponding steering torque; a torque sensor for producing a signal corresponding to said rotary force applied to said handle, said torque sensor comprising a potentiometer having a movable electrode for detecting a torsional angle owing to said steering torque and a torque neutral region sensor arranged to operate together with said movable electrode for detecting a neutral region of said steering torque to produce a signal indicating whether said steering torque is within said torque neutral region or not; a motor current detection circuit for detecting a current flowing in said DC motor; an electromagnetic clutch for coupling/decoupling an output of said DC motor to/from said steering apparatus; a power supply circuit for supplying electric power to said DC motor and said electromagnetic clutch; and a fail safe relay provided with a normally opened contact connected in series in said power supply circuit; said fail safe relay being interrupted to remove said subsidiary steering force when a larger current exceeding said torque neutral region flows in said motor-current detection circuit while said torque neutral region sensor produces the signal indicating that said steering torque is within said torque neutral region.
摘要翻译：用于电动机动力转向装置的故障安全系统包括用于辅助通电的所述转向装置的直流电动机; 用于接收转向旋转力以产生相应的转向扭矩的手柄; 用于产生对应于施加到所述手柄的所述旋转力的信号的扭矩传感器，所述扭矩传感器包括电位器，所述电位计具有用于检测由于所述转向转矩引起的扭转角的可动电极和布置成与所述可移动电极，用于检测所述转向转矩的中性区域，以产生指示所述转向转矩是否在所述转矩中性区域内的信号; 电动机电流检测电路，用于检测在所述直流电动机中流动的电流; 电磁离合器，用于将所述直流电动机的输出与所述转向装置相耦合/解耦; 用于向所述DC电动机和所述电磁离合器供电的电源电路; 以及具有在所述电源电路中串联连接的常开触点的故障安全继电器; 当超过所述扭矩中性区域的较大电流在所述电动机电流检测电路中流动时，所述故障安全继电器被中断以去除所述辅助转向力，同时所述转矩中性点传感器产生指示所述转向转矩在所述转矩中立区域内的信号。

10. 发明授权

US4724916A 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：US4724916A
公开(公告)日：1988-02-16
申请号：US26466
申请日：1987-03-16
申请人： Mitsuharu Morishita , Shinichi Kohge , Koji Terauchi
发明人： Mitsuharu Morishita , Shinichi Kohge , Koji Terauchi
IPC分类号： B62D5/06 , B62D5/04
CPC分类号： B62D5/0478 , B62D5/0439
摘要： A motor-driven power steering system for a vehicle wherein vehicle speed and operator-induced steering torque are detected for the control of power-assisting steering operation; a vehicle-speed sensor for detecting the vehicle speed to generate an output signal representative of the detected vehicle speed; a motor connected to be energized by a battery to transmit a force to the steerable road wheels for power assisting steering motion caused by the operator through the steering wheel; a first electromagnetic sliding clutch for controlling the power-assisting force transmitted from the motor to the steerable road wheels; a second electromagnetic switching clutch connected to be switched off for interrupting the transmission of the power-assisting force from the motor toward the steerable road wheels when the vehicle speed increases above a prescribed level, and switched on for transmission of the power-steering force therebetween when the vehicle speed decreases below the prescribed level; and a control unit connected to receive output signals from the torque sensor and the vehicle-speed sensor for controlling respective running and switching operations of the motor and the first sliding clutch in such a manner that the power-assisting force transmitted from the motor to the steerable road wheels through the first sliding clutch is gradually decreased before the second switching clutch is switched off, and gradually increased after the second switching clutch is switched on.
摘要翻译：一种用于车辆的电动助力转向系统，其中检测到用于控制助力转向操作的车辆速度和操作者引导的转向扭矩; 用于检测车速以产生表示检测到的车辆速度的输出信号的车速传感器; 连接在电动机上的电动机，用于向所述可转向车轮传递力，用于通过所述方向盘对由操作者引起的转向运动进行助力; 第一电磁滑动离合器，用于控制从电动机传递到可转向车轮的动力辅助力; 第二电磁切换离合器，其被连接以在车速增加到规定水平以上时中断从电动机向可转向车轮的动力辅助力的传递，并被接通以使其间的动力转向力传递当车速降低到规定水平以下时; 以及控制单元，其连接以接收来自扭矩传感器和车速传感器的输出信号，用于控制电动机和第一滑动离合器的各个行驶和切换操作，使得从电动机传递到在第二切换离合器关闭之前通过第一滑动离合器的可转向的车轮逐渐减小，并且在第二切换离合器接通之后逐渐增加。

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