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15 条记录 (耗时 0.021 秒)

    Hydraulic valve device for automotive power steering gear
    1.
    发明授权
    Hydraulic valve device for automotive power steering gear 失效
    用于汽车动力转向齿轮的液压阀装置

    公开(公告)号：US5207780A

    公开(公告)日：1993-05-04

    申请号：US709833

    申请日：1991-06-04

    申请人： Naoki Norimatsu ,  Naoki Yuzuriha ,  Koh Uchida

    发明人： Naoki Norimatsu ,  Naoki Yuzuriha ,  Koh Uchida

    IPC分类号： B62D5/08 ,  B62D5/083 ,  B62D6/02

    CPC分类号： B62D6/02 ,  Y10T137/86638

    摘要： A power steering device for a motor vehicle whereby when the vehicle is under a high or middle speed movement, the slide torque is controlled to a relatively low constant level irrespective of the turning of the steering wheel. The device includes a hydraulic pump for producing a hydraulic pressure; a power cylinder powered by the hydraulic pressure for producing a force to assist the steering job; a hydraulic valve for controlling the hydraulic pressure supplied to the power cylinder, the hydraulic valve including a valve shaft and a valve body; a chattering protection seal associated with the hydraulic valve to assure a concentric rotation of the valve shaft relative to the valve body with an assistance of hydraulic pressure applied thereto; and an electronically controlled solenoid valve. The electronically controlled solenoid valve applies when the vehicle is at a standstill or under a low speed movement, the chattering protection seal with a hydraulic pressure which is varied as a steering wheel is turned, and applies, when the vehicle is under a high or middle speed movement, the chattering protection seal with a hydraulic pressure which is controlled to a relatively low constant level even when the steering wheel is turned.

    摘要翻译： 一种用于机动车辆的动力转向装置，其中当车辆处于高速或中速运动时，滑动扭矩被控制到相对较低的恒定水平，而与方向盘的转动无关。 该装置包括用于产生液压的液压泵; 用于产生用于辅助转向作业的力的液压动力缸; 用于控制供给动力缸的液压的液压阀，所述液压阀包括阀轴和阀体; 与所述液压阀相关联的颤振保护密封件，以确保在施加到其上的液压压力的帮助下阀轴相对于阀体的同心旋转; 和电控电磁阀。 当车辆处于静止或低速运动时，电子控制的电磁阀适用，当方向盘转动时，具有变化的液压的颤振保护密封件适用于当车辆处于高或中 速度运动，即使在方向盘转动时也被控制在相对低的恒定水平的液压的颤振保护密封。

    Hydraulic fluid pressure control system for use with power assist steering
    4.
    发明授权
    Hydraulic fluid pressure control system for use with power assist steering 失效
    液压油压力控制系统，用于动力辅助转向

    公开(公告)号：US4846296A

    公开(公告)日：1989-07-11

    申请号：US151122

    申请日：1988-02-01

    申请人： Koh Uchida ,  Takashi Kurihara ,  Makoto Miyoshi

    发明人： Koh Uchida ,  Takashi Kurihara ,  Makoto Miyoshi

    IPC分类号： B62D5/06 ,  B62D6/00 ,  B62D7/14

    CPC分类号： B62D6/00 ,  B62D5/06 ,  B62D7/14

    摘要： A power steering control valve can activate not only a power assist steering system but also a rear wheel steering system. The control valve includes valve elements relatively displaceable in response to a steering input torque to define therebetween parallel first and second fluid flow paths between an oil pump and a fluid reservoir to produce a first pressure difference in a front power cylinder in response to the steering torque. The valve elements define therebetween variable flow orifice means for producing a second pressure difference in a rear wheel power cylinder in response to the steering torque. The control valve also includes an externally controlled variable flow orifice valve. This orifice valve is arranged with respect to the variable flow orifice means such that it increases fluid flow passing therethrough in response to a second predetermined variable, such as a vehicle speed, to decrease the second pressure difference in the rear wheel power cylinder.

    摘要翻译： 动力转向控制阀不仅可以启动动力辅助转向系统，而且可以启动后轮转向系统。 控制阀包括响应于转向输入扭矩相对可移动的阀元件，以在油泵和流体储存器之间在其间界定平行的第一和第二流体流动路径，以响应于转向扭矩产生前动力缸中的第一压力差 。 阀元件在其间限定可变流量孔装置，用于响应于转向转矩而在后轮动力缸中产生第二压力差。 控制阀还包括外部控制的可变流量孔口阀。 该孔口阀相对于可变流量孔装置布置，使得其响应于诸如车辆速度的第二预定变量增加流过其中的流体流量，以减小后轮动力缸中的第二压力差。

    Variable assist power steering system with varying power assist characteristic
    6.
    发明授权
    Variable assist power steering system with varying power assist characteristic 失效
    可变辅助动力转向系统具有不同的动力辅助特性

    公开(公告)号：US4884648A

    公开(公告)日：1989-12-05

    申请号：US138480

    申请日：1987-12-28

    申请人： Koh Uchida ,  Takashi Kurihara ,  Makoto Miyoshi

    发明人： Koh Uchida ,  Takashi Kurihara ,  Makoto Miyoshi

    IPC分类号： B62D5/06 ,  B62D5/07 ,  B62D5/083 ,  B62D6/00 ,  B62D6/02

    CPC分类号： B62D6/00 ,  Y10T137/86726

    摘要： A variable assist power steering system comprises a control valve including valve elements relatively displaceable in response to a steering torque to define therebetween two parallel fluid flow paths connected between the fluid source (10) and the fluid reservoir to produce pressure difference in the power cylinder in response to the steering torque. The control valve includes a plurality of bypass paths, each arranged in parallel to one of plurality of serially arranged variable flow orifices forming the two flow paths and each provided with an externally controlled variable flow orifice valve which is operable responsive to a vehicle speed.

    摘要翻译： 可变辅助动力转向系统包括控制阀，该控制阀包括响应于转向扭矩相对移位的阀元件，以在其间限定两个平行的流体流动路径，该流体流动路径连接在流体源（10）和流体储存器之间，以在动力缸中产生压力差 响应转向扭矩。 控制阀包括多个旁通路径，每个旁路路径平行布置成形成两个流动路径的多个串联布置的可变流动孔中的一个，并且每个设置有可响应于车辆速度操作的外部控制的可变流量孔口阀。

    Variable assist power steering system
    7.
    发明授权
    Variable assist power steering system 失效
    可变辅助动力转向系统

    公开(公告)号：US4958695A

    公开(公告)日：1990-09-25

    申请号：US138479

    申请日：1987-12-28

    申请人： Koh Uchida ,  Takashi Kurihara

    发明人： Koh Uchida ,  Takashi Kurihara

    IPC分类号： B62D5/06 ,  B62D6/00

    CPC分类号： B62D6/00 ,  Y10T137/86726

    摘要： A control valve includes valve elements relatively displaceable in response to a predetermined variable (e.g., a steering torque) to define therebetween two parallel fluid flow paths connected between a fluid source and a fluid reservoir to produce pressure difference in a power cylinder. The control valve comprises a bypass path provided with a variable flow orifice that has an orifice area variable in response to said predetermined variable and an externally controlled variable flow orifice valve that has an orifice area variable in response to a second predetermined variable which is different from the first predetermined variable.

    摘要翻译： 控制阀包括响应于预定变量（例如，转向转矩）相对可移位的阀元件，以在两个平行的流体流动路径之间限定两个平行的流体流动路径，其连接在流体源和流体储存器之间以产生动力缸中的压力差。 控制阀包括设置有可变流量孔口的旁路，该可变流量孔口具有响应于所述预定变量而可变的孔口面积和外部控制的可变流量孔口阀，其具有响应于与第二预定变量不同的第二预定变量而变化的孔口面积 第一预定变量。

    Hydraulic fluid circuit for variable assist power steering system
    8.
    发明授权
    Hydraulic fluid circuit for variable assist power steering system 失效
    可变辅助动力转向系统液压回路

    公开(公告)号：US4865147A

    公开(公告)日：1989-09-12

    申请号：US138345

    申请日：1987-12-28

    申请人： Koh Uchida

    发明人： Koh Uchida

    IPC分类号： B62D5/06 ,  B62D6/00

    CPC分类号： B62D6/00

    摘要： A control valve includes valve elements relatively displaceable in response to a predetermined variable (e.g., a steering torque) to define therebetween two parallel fluid flow paths connected between a fluid source and a fluid reservoir to produce pressure difference in a power cylinder. The control valve comprises a bypass path provided with variable flow orifice means for providing a throttle of fluid flow of the bypass path in response to the predetermined variable and an externally controlled variable flow orifice valve that has an orifice area variable in response to a second predetermined variable which is different from the first predetermined variable.

    摘要翻译： 控制阀包括响应于预定变量（例如，转向转矩）相对可移位的阀元件，以在两个平行的流体流动路径之间限定两个平行的流体流动路径，其连接在流体源和流体储存器之间以产生动力缸中的压力差。 控制阀包括设置有可变流量孔装置的旁通路径，用于响应于预定变量提供旁路路径的流体流量的节流，以及外部控制的可变流量孔口阀，其具有响应于第二预定 变量与第一预定变量不同。

    Variable assist power steering system with varying power assist with vehicle speed
    9.
    发明授权
    Variable assist power steering system with varying power assist with vehicle speed 失效
    可变辅助动力转向系统，具有不同的动力辅助车速

    公开(公告)号：US4862985A

    公开(公告)日：1989-09-05

    申请号：US138402

    申请日：1987-12-28

    申请人： Koh Uchida ,  Takashi Kurihara ,  Makoto Miyoshi ,  Hirohide Kai

    发明人： Koh Uchida ,  Takashi Kurihara ,  Makoto Miyoshi ,  Hirohide Kai

    IPC分类号： B62D5/06 ,  B62D6/00

    CPC分类号： B62D6/00

    摘要： A control valve includes valve elements relatively displaceable in response to a steering torque to define therebetween two parallel fluid flow paths connected between a fluid source and a fluid reservoir to produce pressure difference in a power cylinder. The control valve comprises a bypass path including a first externally controlled variable flow orifice and a variable flow orifice variable with steering torque and a first externally controlled variable flow orifice valve which are connected in series, a second externally controlled variable flow orifice valve, and a second variable flow orifice variable with steering torque. The bypass path is arranged in parallel with a portion of the two parallel fluid paths, the second externally controlled variable flow orifice valve is arranged in parallel with another portion of the parallel fluid paths, and the second variable flow orifice is arranged in series in the remaining portion of the parallel fluid paths.

    摘要翻译： 控制阀包括响应于转向扭矩相对可移位的阀元件，以在两个平行的流体流动路径之间限定两个平行的流体流动路径，其连接在流体源和流体储存器之间以产生动力缸中的压力差。 控制阀包括一个旁路，该旁路包括一个第一外部控制的可变流量孔和一个具有转向转矩的可变流量孔变量和一个串联连接的第一外部受控可变流量孔口阀，一个第二外部控制的可变流量孔口阀， 第二个可变流量孔径变量与转向扭矩。 旁路路径与两条平行的流体路径的一部分平行设置，第二外部控制的可变流量孔口阀与另一部分平行的流体路径平行设置，第二可变流量孔口串联布置在 平行流体路径的剩余部分。

    Hydraulic system for variable assist power steering system
    10.
    发明授权
    Hydraulic system for variable assist power steering system 失效
    可变辅助动力转向系统液压系统

    公开(公告)号：US4875542A

    公开(公告)日：1989-10-24

    申请号：US213022

    申请日：1988-06-29

    申请人： Koh Uchida ,  Takashi Kurihara ,  Makoto Miyoshi

    发明人： Koh Uchida ,  Takashi Kurihara ,  Makoto Miyoshi

    IPC分类号： B62D6/02 ,  B62D6/00

    CPC分类号： B62D6/00

    摘要： A variable assist power steering system employing a fluid distributor circuit of the open center type is disclosed. The fluid distributor circuit includes two parallel fluid flow paths connected to both chambers of a power cylinder respectively to produce a pressure differential between the both cylinder chambers in response to steering torque. For modulating the valve characteristics, two additional variable flow restrictors are arranged in series with two main variable flow restrictors and two bypass paths are arranged to bypass the main variable flow restrictors, respectively. The bypass paths are provided with variable flow orifice valves, respectively, which valves are controlled in response to a turning direction of a steering wheel and also to some external signal, such as vehicle speed.

    摘要翻译： 公开了一种采用开放式中心型流体分配器电路的可变辅助动力转向系统。 流体分配器电路包括分别连接到动力缸的两个腔室的两个平行的流体流动路径，以响应于转向扭矩而在两个气缸室之间产生压力差。 为了调节阀门特性，两个附加的可变流量限制器与两个主要可变流量限制器串联布置，并且两个旁路路径分别布置成绕过主要可变流量限制器。 旁通路径分别设置有可变流量节流阀，其响应于方向盘的转向方向以及诸如车辆速度的某些外部信号而被控制。