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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

US5474145A Hydraulic power steering apparatus 失效
标题翻译：液压动力转向装置
公开(公告)号：US5474145A
公开(公告)日：1995-12-12
申请号：US304923
申请日：1994-09-13
申请人： Kyosuke Haga , Miko Suzuki , Kenichi Fukumura , Hideya Kato , Seiho Kawakami , Kaname Saito
发明人： Kyosuke Haga , Miko Suzuki , Kenichi Fukumura , Hideya Kato , Seiho Kawakami , Kaname Saito
IPC分类号： B62D5/07 , B62D5/06 , B62D6/02
CPC分类号： B62D6/02 , B62D5/062
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 operational fluid by bypassing part of the operational 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.
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，以便通过将部分操作流体旁路到储存器来控制操作流体的流速。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。

6. 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。

7. 发明授权

US5778756A Hydraulic power steering apparatus 失效
标题翻译：液压动力转向装置
公开(公告)号：US5778756A
公开(公告)日：1998-07-14
申请号：US828366
申请日：1997-03-28
申请人： Kyosuke Haga , Mikio Suzuki , Kenichi Fukumura
发明人： Kyosuke Haga , Mikio Suzuki , Kenichi Fukumura
IPC分类号： B62D5/07 , B62D5/06 , B62D5/083 , F15B11/08 , F16D31/02
CPC分类号： B62D5/06
摘要： A hydraulic power steering apparatus includes a fluid pump, a power cylinder, a reservoir, and a control valve connected to the pump via a supply passage including a high pressure hose and connected to the reservoir via a drain passage. The power steering apparatus also includes a bypass passage provided between the supply passage and the drain passage, and a check valve which is disposed in the bypass passage to allow operation fluid to flow only in a direction from the drain passage to the supply passage. The power steering apparatus can supply a sufficient amount of operation fluid to the power cylinder even when a steering wheel is abruptly turned or when an opposing force is input from a tire.
摘要翻译：液压动力转向装置包括流体泵，动力缸，储存器和通过包括高压软管的供给通道连接到泵的控制阀，并且经由排水通道连接到储存器。动力转向装置还包括设置在供给通道和排出通道之间的旁通通道，以及设置在旁通通道中的止回阀，以允许操作流体仅沿着从排放通道到供给通道的方向流动。动力转向装置即使在方向盘突然转动时或者从轮胎输入相反的力量时，也能向动力缸提供足够量的操作流体。

8. 发明授权

US5638912A Hydraulic power steering apparatus 失效
标题翻译：液压动力转向装置
公开(公告)号：US5638912A
公开(公告)日：1997-06-17
申请号：US339229
申请日：1994-11-10
申请人： Kyosuke Haga , Mikio Suzuki , Katsuhisa Mori
发明人： Kyosuke Haga , Mikio Suzuki , Katsuhisa Mori
IPC分类号： B62D5/07 , B62D5/083
CPC分类号： B62D5/083
摘要： A power steering apparatus is composed 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 four paths communicating with the fluid source and the reservoir, and each of the four paths is formed with a center-open variable orifice 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 two supply paths is formed with a semi-center-open variable orifice which opens when the control valve is in the neutral state, and two drain paths communicating with the chambers of the power cylinder and the reservoir, each of the two drain paths is formed with a center-closed variable orifice of which closes when the control valve is in the neutral state.
摘要翻译：动力转向装置包括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。第一控制部分具有与流体源和储存器连通的四个路径，并且四个路径中的每一个路径形成有当控制阀处于中立状态时打开的中心可开启的可变孔口。第二控制部具有与流体源连通的两个供给路径和动力缸的一对室，两个供给路径中的每一个形成有半中心开口的可变孔，当控制阀处于中立状态时打开状态和与动力缸和储存器的腔室连通的两个排放路径，两个排水路径中的每一个形成有中心闭合的可变孔口，当控制阀处于空档状态时，其可关闭。

9. 发明授权

US5538095A Power steering apparatus 失效
标题翻译：动力转向装置
公开(公告)号：US5538095A
公开(公告)日：1996-07-23
申请号：US489837
申请日：1995-06-13
申请人： Kyosuke Haga , Mikio Suzuki , Katsuhisa Mori
发明人： Kyosuke Haga , Mikio Suzuki , Katsuhisa Mori
IPC分类号： B62D5/07 , B62D5/083 , B62D6/02 , B62D5/12
CPC分类号： B62D5/083 , B62D6/02
摘要： A power steering apparatus comprises a fluid source for supplying pressurized fluid, a power cylinder having a pair of fluid chambers, a control valve, and a drain control mechanism. The control valve is composed of first and second control portions. The first control portion has four paths connecting the fluid source and the reservoir, and each of the four paths is formed with a variable orifice of center-open type. The second control portion has two supply paths communicating the fluid source with the fluid chambers of the power cylinder, each of the supply paths being formed with a variable orifice of center-open type, and two drain paths communicating the fluid chambers with the reservoir, each of the drain paths being formed with a variable orifice of center-closed type. The drain control mechanism is responsive to differential pressure between the fluid chambers of the power cylinder to control the communication of one fluid chamber under high pressure with the reservoir, and is responsive to a vehicle speed to control the communication of both fluid chambers with the reservoir.
摘要翻译：动力转向装置包括用于供应加压流体的流体源，具有一对流体室的动力缸，控制阀和排水控制机构。控制阀由第一和第二控制部分组成。第一控制部分具有连接流体源和储存器的四个路径，并且四个路径中的每一个形成有中心开放型的可变孔口。第二控制部具有使流体源与动力缸的流体室连通的两个供给路径，每个供给路径形成有中心开放型的可变孔，以及将流体室与储存器连通的两个排出路径，每个排水路径形成有中心关闭型的可变孔口。排水控制机构响应于动力缸的流体室之间的差压，以控制高压下的一个流体室与贮存器的连通，并响应于车速来控制两个流体室与贮存器的连通。

10. 发明授权

US4610614A Vane pump 失效
标题翻译：叶片泵
公开(公告)号：US4610614A
公开(公告)日：1986-09-09
申请号：US696514
申请日：1985-01-30
申请人： Kyosuke Haga , Tsuneo Tanaka , Toshifumi Sakai
发明人： Kyosuke Haga , Tsuneo Tanaka , Toshifumi Sakai
IPC分类号： F01C21/08 , F04C2/344 , F04C15/00 , F04C18/00
CPC分类号： F01C21/0863 , F04C15/0049 , F04C2/3446
摘要： In a vane pump, a pump housing contains a cam ring having an internal cam surface, in which a rotor carrying eight vanes is rotatable by a drive shaft. A pair of side plates positioned in the receiving bore in contact engagement with the opposite end surface of the cam ring, the internal cam surface and the rotor define a pump chamber. Each of the side plates is formed at its inside surface contacting the cam ring with a pair of intake ports, a pair of exhaust ports and a vane back pressure groove. This groove is always filled with pressurized fluid supplied from the exhaust ports such that the pressurized fluid is directed into vane support slits formed in the rotor. The angular width between the start point of each of the intake ports and the start point of one of the exhaust ports is chosen to an angle of 90 degrees which is twice the pitch of the vanes, and the angular width of each of the exhaust ports is chosen to be not larger than or angular width which outer end surfaces of two successive vanes make, whereby the volume of pressurized fluid which leaks from the vane back pressure groove towards the intake ports through a clearance between the rotor and each side plate can be maintained constant.
摘要翻译：在叶片泵中，泵壳体包含具有内部凸轮表面的凸轮环，其中承载八个叶片的转子可由驱动轴旋转。定位在接收孔中的一对侧板与凸轮环的相对端表面接触接合，内凸轮表面和转子限定泵室。每个侧板在其与凸轮环接触的内表面形成有一对进气口，一对排气口和叶片背压槽。该槽总是填充有从排气口供应的加压流体，使得加压流体被引导到形成在转子中的叶片支撑狭缝中。每个进气口的起始点与其中一个排气口的起点之间的角度宽度被选择为90度的角度，该角度是叶片间距的两倍，并且每个排气口的角度宽度被选择为不大于或两个连续叶片的外端表面的角度宽度，由此通过转子和每个侧板之间的间隙从叶片背压槽向进气口泄漏的加压流体的体积可以是保持不变。

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