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公开(公告)号：US5226802A
公开(公告)日：1993-07-13
申请号：US910234
申请日：1992-07-09
申请人： Keiichi Nakamura , Yoshiharu Inaguma , Hideya Kato
发明人： Keiichi Nakamura , Yoshiharu Inaguma , Hideya Kato
CPC分类号： F04C14/26 , F01C21/0863
摘要： A variable-displacement vane pump apparatus is composed of a pump part and a switching valve. The pump part is comprised of a housing, a cam ring, a rotor, plural vanes, side plates, two pairs of intake and exhaust ports formed on the side plates, discharge pressure chambers connecting with the discharge ports, and an intake chamber connected with the intake ports. The pump part is divided into first and second pump portions, and only one of the pump portions is activated by the operation of the switching valve when the load pressure is low. Under such condition, the fluid discharged from the particular pump portion is returned to its intake port. Also, the flow rate of the operation fluid discharged from the pump is adjusted by the flow control valve by returning part of pressurized fluid into the inlet ports. A fluid supplied from a reservoir is energized two times by supercharge effect utilizing the returned fluid from the switching valve and the returned fluid from the flow control valve. The vane pump is further provided with a special arrangement to lower the pressure at the bottoms of slits receiving the vanes at the time period when the slits located in the particular pump portion, thereby reducing the energy loss.
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公开(公告)号：US5651423A
公开(公告)日：1997-07-29
申请号：US452699
申请日：1995-05-30
申请人： Kyosuke Haga , Mikio Suzuki , Yoshiharu Inaguma , Hideya Kato
发明人： Kyosuke Haga , Mikio Suzuki , Yoshiharu Inaguma , Hideya Kato
摘要： A hydraulic power steering apparatus includes a motor-driven pump which discharges pressurized working fluid at a flow rate proportional to the rotational speed. A load-pressure responsive valve is connected to a discharge passage to which the pressurized fluid is discharged from the pump. The load-pressure responsive valve bypasses the pressurized fluid to a reservoir when the control valve is in a neutral state, thereby reducing the amount of the pressurized fluid supplied to the control valve, and increases the amount of the pressurized fluid supplied to the control valve when the load pressure of the pump increases upon operation of the control valve. With this control, the energy consumed by the pump can be reduced.
摘要翻译： 液压动力转向装置包括电动泵，其以与转速成比例的流量排出加压工作流体。 负载压力响应阀连接到排出通道，加压流体从泵排出。 当控制阀处于中立状态时，负载压力响应阀将加压流体旁路到储存器，从而减少供给到控制阀的加压流体的量，并且增加供给到控制阀的加压流体的量 当操作控制阀时泵的负载压力增加。 通过这种控制，可以减少泵消耗的能量。
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公开(公告)号：US5515938A
公开(公告)日：1996-05-14
申请号：US138963
申请日：1993-10-21
申请人： Kyosuke Haga , Mikio Suzuki , Yoshiharu Inaguma , Kenichi Fukumura , Hideya Kato , Katsuhisa Mori
发明人： Kyosuke Haga , Mikio Suzuki , Yoshiharu Inaguma , Kenichi Fukumura , Hideya Kato , Katsuhisa Mori
CPC分类号： B62D6/02 , B62D5/083 , F04B49/225 , F04B2205/06 , F04B2205/08
摘要： A power steering apparatus having a fluid source for discharging pressurized fluid, a power cylinder, a control valve responsive to operation of a steering wheel for supplying the power cylinder with pressurized fluid from the fluid source, and a reservoir. The control valve has a first control portion for controlling the flow of pressurized fluid from the fluid source to the reservoir, and a second control portion for controlling the flow of pressurized fluid to the power cylinder. The first control portion has two paths connecting the fluid source and the reservoir, each of the paths being formed with at least one variable orifice of a center-open type which opens when the control valve is in a neutral state. The second control portion has two supply paths communicating with the fluid source and a pair of chambers of the power cylinder, each of the supply paths being formed with a variable orifice of a center-close type which closes when the control valve is in the neutral state, and two drain paths communicating with the pair of chambers and the reservoir, each of the drain paths being formed with a variable orifice of a center-open type which opens when the control valve is in the neutral state.
摘要翻译： 一种动力转向装置，具有用于排出加压流体的流体源，动力缸，响应于操作方向盘的控制阀，用于向动力缸提供来自流体源的加压流体和储存器。 控制阀具有用于控制加压流体从流体源流向储存器的第一控制部分和用于控制加压流体流向动力缸的第二控制部分。 第一控制部分具有连接流体源和储存器的两条路径，每个路径形成有至少一个中心开放型可变孔口，当可控制阀处于空档状态时，其可打开。 第二控制部具有与流体源和动力缸的一对腔室连通的两个供给路径，每个供给路径形成有中心关闭型的可变孔口，当控制阀处于中立状态时，该可变孔口关闭 状态和与所述一对室和所述储存器连通的两个排放路径，每个所述排水路径形成有当所述控制阀处于中立状态时打开的中心开式的可变孔口。
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公开(公告)号：US5577573A
公开(公告)日：1996-11-26
申请号：US357757
申请日：1994-12-16
申请人： Kyosuke Haga , Mikio Suzuki , Yoshiharu Inaguma , Kenichi Fukumura , Hideya Kato
发明人： Kyosuke Haga , Mikio Suzuki , Yoshiharu Inaguma , Kenichi Fukumura , Hideya Kato
摘要： A hydraulic power steering system includes a pump, a flow control valve, and a bypass control valve. The flow control valve responds to a pressure drop across a metering orifice disposed in a fluid supply passage so as to control the flow rate of operating fluid by bypassing a part of the operating fluid to a reservoir. A spring chamber of the flow control valve is connected to the supply passage through a control orifice. The bypass control valve is disposed between the spring chamber and the reservoir so as to increase the amount of bypassed fluid by controlling the pressure in the spring chamber. The bypass control valve has a control spool, a load pressure introduction port connected to the upstream side of the control orifice for leading the load pressure to a first end of the control spool and a pilot port connected to the downstream side of the control orifice for leading the pressure in the spring chamber of the flow control valve to a second end of the control spool. Moreover, a pressure receiving area of the second end of the control spool is smaller than that of the first end of the control spool. Accordingly, a spring having a small spring constant can be used in the bypass control valve, even when the control spool is controlled within a short stroke. Further, the control spool, the load pressure introduction port, and the pilot port are formed in a sleeve.
摘要翻译： 液压动力转向系统包括泵，流量控制阀和旁通控制阀。 流量控制阀响应设置在流体供应通道中的计量孔的压降，以便通过将一部分工作流体绕过储存器来控制工作流体的流量。 流量控制阀的弹簧室通过控制孔连接到供给通道。 旁通控制阀设置在弹簧室和储存器之间，以通过控制弹簧室中的压力来增加旁路流体的量。 旁通控制阀具有控制阀芯，连接到控制孔的上游侧的负载压力引入口，用于将负载压力引导到控制阀芯的第一端，以及连接到控制孔的下游侧的先导端口， 将流量控制阀的弹簧室中的压力引导到控制阀芯的第二端。 此外，控制阀芯的第二端的受压面积小于控制阀芯的第一端的受压面积。 因此，即使控制阀芯在短行程内被控制，也可以在旁通控制阀中使用弹簧常数小的弹簧。 此外，控制阀芯，负载压力引入口和先导端口形成在套筒中。
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公开(公告)号：US5439070A
公开(公告)日：1995-08-08
申请号：US75307
申请日：1993-06-11
申请人： Kyosuke Haga , Mikio Suzuki , Yoshiharu Inaguma , Kenichi Fukumura , Hideya Kato , Katsuhisa Mori
发明人： Kyosuke Haga , Mikio Suzuki , Yoshiharu Inaguma , Kenichi Fukumura , Hideya Kato , Katsuhisa Mori
CPC分类号： B62D6/02 , B62D5/083 , F04B49/225 , F04B2205/06 , F04B2205/08 , F15B2211/45
摘要： A power steering apparatus having a hydraulic pump for outputting a pressurized fluid, an assist force generation mechanism hydraulically connected to the pump through a supply passage to generate an assist force in response to rotation of a steering wheel, wherein the assist force generation mechanism has a characteristic that the back pressure thereof increases when the steering wheel is rotated. The power steering apparatus further comprises a flow control valve having a spool which is moved in response to a pressure drop at a metering orifice disposed in the middle of the supply passage, so as to control the flow rate of the pressurized fluid to be constant. The spring chamber of the flow control valve is connected to a reservoir through a drain passage, and a drain valve is disposed in the drain passage for allowing the flow of pressurized fluid from the spring chamber to the reservoir when the back pressure of the assist force generation mechanism is low, and for prohibiting the flow of the pressurized fluid when the back pressure of the assist force generation mechanism increases.
摘要翻译： 一种动力转向装置，其具有用于输出加压流体的液压泵，辅助力产生机构，其通过供给通道与泵液压连接，以产生响应于方向盘旋转的辅助力，其中辅助力产生机构具有 其特征在于当方向盘旋转时其背压增加。 动力转向装置还包括流量控制阀，该流量控制阀具有响应于设置在供给通道中间的计量孔口处的压降而移动的阀芯，以便控制加压流体的流量恒定。 流量控制阀的弹簧室通过排水通道连接到储存器，并且排水阀设置在排水通道中，用于当加压流体从弹簧室流到储存器时，当辅助力的背压 发电机构低，并且当辅助力产生机构的背压增加时禁止加压流体的流动。
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公开(公告)号：US07128542B2
公开(公告)日：2006-10-31
申请号：US10432615
申请日：2001-12-03
申请人： Mikio Suzuki , Yoshiharu Inaguma , Keiji Suzuki , Hideya Kato , Tsuyoshi Ikeda
发明人： Mikio Suzuki , Yoshiharu Inaguma , Keiji Suzuki , Hideya Kato , Tsuyoshi Ikeda
CPC分类号： F04C14/226
摘要： In a hydraulic pump, a cam ring is provided in a cylindrical adaptor for movement in a radial direction, and a differential pressure control valve is provided to control internal pressure and load pressure at the front and back sides of a variable orifice to be introduced into action chambers and formed at the opposite sides of the cam ring for controlling a discharge amount of the pump in accordance with the rotation speed of the pump. The differential pressure control valve is operated under the internal pressure and load pressure respectively introduced into action chambers and the load of a thrust spring biasing the differential pressure control valve toward the internal pressure chamber. The load of the thrust spring is increased or decreased in accordance with an increase or a decrease of the load pressure. The increase or decrease of the load pressure is effected by a load pressure responsive piston loaded by a thrust spring and engaged with the differential pressure control valve at one end thereof in the internal pressure chamber.
摘要翻译： 在液压泵中，凸轮环设置在圆筒形适配器中以沿径向移动，并且设置差压控制阀以控制可变孔口的前后侧的内部压力和负载压力以被引入 动作室，形成在凸轮环的相对侧，用于根据泵的转速来控制泵的排出量。 差压控制阀在分别引入动作室的内部压力和负载压力以及将差压控制阀向内部压力室偏压的推力弹簧的负载下操作。 推力弹簧的载荷根据负载压力的增加或减小而增加或减少。 负载压力的增加或减小由负载压力响应活塞负载，由负载弹簧加载，并与压力控制阀在其内部压力室中的一端接合。
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公开(公告)号：US6041807A
公开(公告)日：2000-03-28
申请号：US057550
申请日：1998-04-09
申请人： Susumu Honaga , Hidetoshi Fujiwara , Yoshiharu Inaguma , Hideya Kato , Kazuhiro Watanabe , Takashi Imanishi
发明人： Susumu Honaga , Hidetoshi Fujiwara , Yoshiharu Inaguma , Hideya Kato , Kazuhiro Watanabe , Takashi Imanishi
IPC分类号： B62D5/06 , F15B11/042 , F15B11/05 , F15B13/00 , G05D11/03
CPC分类号： F15B11/05 , B62D5/062 , F15B11/042 , F15B11/0423 , F15B2013/008 , F15B2211/2053 , F15B2211/40515 , F15B2211/40561 , F15B2211/45 , F15B2211/455 , F15B2211/50509
摘要： A flow control device, responsive to the rotational speed of a pump and to load pressure, has a simple structure. And a housing of the flow control device for saving energy can make use of a general pump housing not for saving energy as a common housing.The flow control device of a power steering apparatus, arranged in a housing of a pump, includes a flow control valve and a load pressure responsive valve. The flow control valve includes a bypass spool with a control rod penetrating a metering orifice. The load pressure responsive valve is incorporated in a union for response to the load pressure. The control rod is located on the bypass spool for response to the rotational speed of the pump.
摘要翻译： 响应于泵的转速和负载压力的流量控制装置具有简单的结构。 并且用于节能的流量控制装置的壳体可以利用一般的泵壳体，而不是为了节省能量作为共同的壳体。 动力转向装置的流量控制装置，其配置在泵的壳体中，具有流量控制阀和负载压力响应阀。 流量控制阀包括具有穿过计量孔的控制杆的旁通阀芯。 负载压力响应阀被并入用于响应负载压力的联合。 控制杆位于旁路阀芯上以响应泵的转速。
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公开(公告)号：US4496288A
公开(公告)日：1985-01-29
申请号：US452136
申请日：1982-12-22
申请人： Keiichi Nakamura , Yoshiharu Inaguma , Yutaka Mori
发明人： Keiichi Nakamura , Yoshiharu Inaguma , Yutaka Mori
CPC分类号： F04C14/226
摘要： A vane type pump with a variable capacity for power steering devices is provided with a movable ring received and radially movable in a closed cylindrical bore of a pump housing. A spring acts on the movable ring to deflect the axis of the movable ring from the axis of a rotor, which is rotated to move vanes along an internal bore of the movable ring. A sealing pin and a valve element are provided at diametrically opposite sides of the movable ring and define first and second pressure chambers around the movable ring. The first pressure chamber receives pressurized fluid from a part of the internal bore of the movable ring and conducts the pressurized fluid into the second pressure chamber through a throttle, which is defined by the valve element and a part of a circumferential external surface of the movable ring. The throttle generates a pressure difference between the first and second pressure chambers, and the pressure difference acts on the movable ring to move the same against the force of the spring. The pump is further provided with a solenoid operated actuator for adjusting the position of the valve element, and a relief valve.
摘要翻译： 具有用于动力转向装置的可变容量的叶片型泵设置有容纳在泵壳体的封闭圆柱形孔中并可径向移动的可移动环。 弹簧作用在可动环上，以使可动环的轴线从转子的轴线偏转，该转子被旋转以沿着可动环的内孔移动叶片。 密封销和阀元件设置在可动环的直径相对的两侧，并且围绕可移动环限定第一和第二压力室。 第一压力室从可移动环的内孔的一部分接收加压流体，并且通过节流阀将加压流体传导到第二压力室中，所述节流阀由阀元件和活动的圆周外表面的一部分 环。 节气门在第一和第二压力室之间产生压力差，并且压力差作用在可动环上以相对于弹簧的力移动。 泵还设置有用于调节阀元件的位置的电磁操作致动器和安全阀。
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公开(公告)号：US4476529A
公开(公告)日：1984-10-09
申请号：US411349
申请日：1982-08-25
申请人： Keiichi Nakamura , Yutaka Mori , Yoshiharu Inaguma
发明人： Keiichi Nakamura , Yutaka Mori , Yoshiharu Inaguma
CPC分类号： B62D5/09
摘要： A control system for a power steering device of a vehicle, wherein the rotational angular position of a steering wheel, the vehicle driving speed and the steering torque applied to the steering wheel are detected and processed by a digital computer. The computer selects one of plural control values stored in a memory device based upon the detected steering torque and the detected vehicle speed and outputs the selected one of the control values along with solenoid selection data which is determined based upon the detected rotary angular position data. An electric current having a value corresponding to the selected one of the control values is applied from a solenoid drive circuit to one of a pair of solenoids, so that a four-way open center type solenoid valve having the solenoids controls the supply and exhaust of pressurized fluid to and away from a power cylinder of the power steering device in accordance with the detected vehicle driving speed and the detected steering torque.
摘要翻译： 一种用于车辆的动力转向装置的控制系统，其中方向盘的旋转角度位置，车辆行驶速度和施加到方向盘的转向扭矩被数字计算机检测和处理。 计算机基于检测到的转向转矩和检测到的车速选择存储在存储装置中的多个控制值中的一个，并输出所选择的一个控制值以及基于检测到的旋转角位置数据确定的电磁阀选择数据。 具有对应于所选择的一个控制值的值的电流从螺线管驱动电路施加到一对螺线管中的一个，使得具有螺线管的四通开放式电磁阀控制供给和排出 根据检测到的车辆行驶速度和检测到的转向扭矩将动力加压到动力转向装置的动力缸。
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公开(公告)号：US4798050A
公开(公告)日：1989-01-17
申请号：US60525
申请日：1987-06-11
摘要： A control system for a hydraulic tandem pump assembly including a primary pump for supplying fluid under pressure to a power-assisted steering device and a secondary pump for supplying fluid under pressure to a hydraulic motor of an engine cooling fan, which pumps are mounted on a common drive shaft for rotation therewith. The control system includes an electrically operated flow quantity control valve disposed within a communication passage between the secondary pump and the hydraulic motor to bypass fluid under pressure discharged from the secondary pump into an inlet passage connecting a fluid reservoir to the secondary pump, a temperature sensor arranged to detect an ambient temperature of a prime engine of the vehicle for producing therefrom an output signal indicative of the ambient temperature, and an electric control apparatus connected to the sensor to control an electric current applied to the control valve in response to the output signal from the sensor in such a manner that the control valve is conditioned to bypass a large part or the entirety of fluid under pressure discharged from the secondary pump into the inlet passage when the ambient temperature of the engine is below a predetermined value.
摘要翻译： 一种用于液压串联泵组件的控制系统，包括用于将压力下的流体供应到动力辅助转向装置的主泵和用于将压力下的流体供应到发动机冷却风扇的液压马达的次级泵，所述泵安装在 公共驱动轴与其一起旋转。 控制系统包括电动流量控制阀，其设置在次级泵和液压马达之间的连通通道内，以将从次级泵排出的压力旁通的流体连接到将流体储存器连接到次级泵的入口通道，温度传感器 布置成检测车辆的主引擎的环境温度，从而产生指示环境温度的输出信号，以及连接到传感器的电气控制装置，以响应于输出信号控制施加到控制阀的电流 从传感器以使发动机的环境温度低于预定值时控制阀被调节为绕过从次级泵排出的压力的大部分或全部流体进入入口通道。
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