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1. 发明授权

US5577573A Hydraulic power steering apparatus 失效
标题翻译：液压动力转向装置
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
IPC分类号： B62D5/06 , B62D6/02
CPC分类号： B62D5/062 , B62D6/02
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。

2. 发明授权

US5439070A Hydraulic power steering apparatus 失效
标题翻译：液压动力转向装置
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
IPC分类号： B62D5/083 , B62D6/02 , F04B49/22 , B62D5/08
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。

3. 发明授权

US5515938A Hydraulic power steering apparatus 失效
标题翻译：液压动力转向装置
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
IPC分类号： B62D5/083 , B62D6/02 , F04B49/22 , B62D5/06
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。

4. 发明授权

US5651423A Power steering apparatus 失效
标题翻译：动力转向装置
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
IPC分类号： B62D5/06 , B62D5/07 , B62D6/02 , B62D5/087
CPC分类号： B62D5/062 , B62D6/02
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。

5. 发明授权

US5372214A Power steering apparatus 失效
标题翻译：动力转向装置
公开(公告)号：US5372214A
公开(公告)日：1994-12-13
申请号：US34869
申请日：1993-03-19
申请人： Kyosuke Haga , Kiyotaka Kato , Mikio Suzuki , Yoshiharu Inaguma , Keiji Suzuki , Masanori Natsume , Hironori Hibino
发明人： Kyosuke Haga , Kiyotaka Kato , Mikio Suzuki , Yoshiharu Inaguma , Keiji Suzuki , Masanori Natsume , Hironori Hibino
IPC分类号： B62D5/065 , B62D5/10
CPC分类号： B62D5/065
摘要： A power steering apparatus for turning a steerable wheel of a vehicle in response to steering operation by a driver. The apparatus comprises a hydraulic pump for pumping a fluid from a reservoir so as to supply pressurized fluid to a power cylinder formed in a gear housing through a direction control valve which is operable in response to rotation of the steering wheel for selectively delivering the pressurized fluid to pair of pressure chambers of the power cylinder. The apparatus further comprises an electric motor for rotating the hydraulic pump, an accumulator for accumulating the pressurized fluid discharged from the hydraulic pump, a detector for detecting the pressure of the pressurized fluid and for outputting a signal corresponding to the detected pressure, and a controller responsible to the signal from the detector for activating the electric motor only when the detected pressure is below a predetermined level. The hydraulic pump and the electric motor are mounted on the gear housing.
摘要翻译：一种用于响应于驾驶员的转向操作来转动车辆的可转向车轮的动力转向装置。该装置包括用于从储存器泵送流体的液压泵，以便通过方向控制阀将加压流体供应到形成在齿轮壳体中的动力缸，该方向控制阀响应于方向盘的旋转而可操作以选择性地输送加压流体到动力缸的一对压力室。该装置还包括用于旋转液压泵的电动机，用于累积从液压泵排出的加压流体的蓄能器，用于检测加压流体的压力并输出对应于检测到的压力的信号的检测器，以及控制器负责来自检测器的信号，用于仅在检测到的压力低于预定水平时启动电动机。液压泵和电动机安装在齿轮箱上。

6. 发明授权

US07128542B2 Variable displacement pump 失效
标题翻译：可变排量泵
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
IPC分类号： F03C2/00 , F04C2/00 , F04C15/04
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。

7. 发明授权

US5226802A Variable-displacement vane pump 失效
标题翻译：可变位移泵
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
IPC分类号： F01C21/08 , F04C14/26
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.

8. 发明授权

US6041807A Flow control device of power steering apparatus 失效
标题翻译：动力转向装置的流量控制装置
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。

9. 发明授权

US4593783A Power steering system 失效
标题翻译：动力转向系统
公开(公告)号：US4593783A
公开(公告)日：1986-06-10
申请号：US727079
申请日：1985-04-25
申请人： Susumu Honaga , Mikio Suzuki , Yoshiharu Inaguma
发明人： Susumu Honaga , Mikio Suzuki , Yoshiharu Inaguma
IPC分类号： B62D5/083 , B62D5/22 , B62D6/00 , B62D6/02 , B62D5/08
CPC分类号： B62D6/00
摘要： A power steering system which includes an engine-driven pump, a fluid motor for supplementing manual steering torque, a fluid control valve for distributing fluid to the fluid motor, and a reaction device for applying hydraulic reaction or feeling to a steering wheel. A first flow control valve is utilized to deliver first fluid flow to a fluid control valve from the pump and to lead excess flow to a bypass passage. A second flow control valve is connected between the bypass passage and the reaction device to deliver second fluid flow to the reaction device and to lead excess flow to a reservoir. A magnetic pressure control valve is connected to the reaction device to control fluid pressure applied thereto in accordance with a predetermined vehicle operating condition, such as vehicle speed.
摘要翻译：一种动力转向系统，包括发动机驱动的泵，用于补充手动转向扭矩的流体马达，用于向流体马达分配流体的流体控制阀以及用于向方向盘施加液压反作用或感觉的反作用装置。第一流量控制阀用于将第一流体流从泵输送到流体控制阀并且将过量的流引导到旁路通道。第二流量控制阀连接在旁路通道和反应装置之间，以将第二流体流输送到反应装置，并将过量的流量引导到储存器。磁性压力控制阀连接到反作用装置，以根据诸如车辆速度的预定车辆操作条件来控制施加到其上的流体压力。

10. 发明授权

US4220072A Power steering apparatus 失效
标题翻译：动力转向装置
公开(公告)号：US4220072A
公开(公告)日：1980-09-02
申请号：US933873
申请日：1978-08-15
申请人： Akio Numazawa , Minoru Kawabata , Ryutaro Abe , Mikio Suzuki , Yoshiharu Inaguma
发明人： Akio Numazawa , Minoru Kawabata , Ryutaro Abe , Mikio Suzuki , Yoshiharu Inaguma
IPC分类号： B62D5/08 , B62D5/24 , F15B9/10
CPC分类号： B62D5/24 , B62D5/08 , Y10T137/86638
摘要： A power steering apparatus comprises a main valve member rotating in response to the action of a fluid pressure motor supplementing manual steering torque and a flap valve member rotating in response to the manual steering torque and mounted within the main valve member. The main valve member and the flap valve member are operable to control flow of fluid under pressure supplied into and discharged from the fluid pressure motor. A plunger member is slidably received in the flap valve member and is provided with an anti-vibration member. A passage communicating with a fluid supply port is provided for applying fluid under pressure to the plunger member to urge the anti-vibration member against the main valve member.
摘要翻译：动力转向装置包括响应于补充手动转向扭矩的流体压力马达的动作而旋转的主阀构件以及响应于手动转向扭矩而旋转并安装在主阀构件内的挡板阀构件。主阀构件和活瓣阀构件可操作以控制供给流体压力马达和从流体压力马达排出的压力下的流体流动。活塞构件可滑动地容纳在活门阀构件中并且设置有防振构件。提供与流体供应口连通的通道，用于将压力下的流体施加到柱塞构件，以将防振构件推向主阀构件。

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