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公开(公告)号：US4632204A
公开(公告)日：1986-12-30
申请号：US747921
申请日：1985-06-24
申请人： Susumu Honaga , Mikio Suzuki , Yoshiharu Inaguma , Hiroki Sato , Kenichi Kikuchi , Masato Tanabe
发明人： Susumu Honaga , Mikio Suzuki , Yoshiharu Inaguma , Hiroki Sato , Kenichi Kikuchi , Masato Tanabe
CPC分类号： B62D6/02
摘要： A power assisted steering system of the type which includes a hydraulic reaction mechanism for controlling the hydraulic power assist in accordance with an increase or decrease of the vehicle speed. The system includes primary and secondary hydraulic pumps, the primary pump having the function of applying hydraulic pressure to the power cylinder and the secondary pump having the function of applying hydraulic pressure to the reaction mechanism in proportion to the vehicle speed. The secondary pump is unitedly assembled with the primary pump to be driven by the prime mover, and comprises a first control valve for controlling the quantity of fluid applied to the reaction mechanism for the secondary pump in a constant amount, and a second control valve for controlling the pressure of fluid controlled by the first control valve in accordance with the vehicle speed.
摘要翻译： 一种动力辅助转向系统，其包括用于根据车速的增加或减少来控制液压动力辅助的液压反作用机构。 该系统包括主液压泵和次级液压泵，主泵具有向动力缸施加液压的功能，以及具有与车速成比例地向反作用机构施加液压的功能的副泵。 二次泵与主泵组合在一起由原动机驱动，并包括第一控制阀，用于控制施加到二次泵的反应机构中的流体的量恒定;以及第二控制阀， 根据车速控制由第一控制阀控制的流体的压力。
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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
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。
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公开(公告)号：US4805714A
公开(公告)日：1989-02-21
申请号：US3766
申请日：1987-01-16
摘要： A power steering system which includes a fluid source that supplies pressure fluid of a constant flow rate, a fluid motor for supplementing manual steering torque, a servo-valve for distributing fluid to the fluid motor, and a reaction device for applying hydraulic reaction or feeling to a steering wheel. A magnetic control valve is connected to the reaction device to control fluid pressure applied thereto in accordance with a vehicle operating condition, such a vehicle speed. A flow dividing valve serves to divide the pressure fluid of a constant flow rate in a predetermined ratio into first and second flows which are respectively directed to the servo-valve and reaction device. A bypass conduit provided with a bypass orifice is connected between the fluid source and the servo-valve in parallel relation with the flow dividing valve.
摘要翻译： 一种动力转向系统，包括供给恒定流量的压力流体的流体源，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伺服阀，以及用于施加液压反应或感觉的反作用装置 到方向盘。 磁力控制阀连接到反作用装置，以根据车辆操作条件（如这种车速）来控制施加到其上的流体压力。 分流阀用于将预定比例的恒定流量的压力流体分成分别指向伺服阀和反应装置的第一和第二流。 具有旁通孔的旁通管路与流量分配阀并联连接在流体源和伺服阀之间。
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公开(公告)号：US06889795B2
公开(公告)日：2005-05-10
申请号：US10671248
申请日：2003-09-24
CPC分类号： B62D5/0421 , B62D5/0448
摘要： An electric power steering device in which a motor shaft and a rack bar form a diagonal intersection. The power transmission includes: a drive gear rotating in tandem with the motor shaft and forming a bevel gear with linearly extending teeth; a ball screw mechanism disposed co-axial with the rack bar and converting a rotational motion to a linear motion; and a driven gear rotating in tandem with a nut of the ball screw mechanism, meshing with and moving in tandem with the drive gear, and forming a bevel gear with linearly extending teeth. The drive gear and/or the driven gear can be adjusted so that backlash between the two elements can be adjusted in a continuous, non-stepped manner.
摘要翻译： 一种电动动力转向装置，其中电动机轴和齿条形成对角交叉。 动力传动包括：驱动齿轮与马达轴串联旋转并形成具有线性延伸齿的锥齿轮; 滚珠丝杠机构，其与所述齿杆条同轴设置并将旋转运动转换成线性运动; 以及与滚珠丝杠机构的螺母串联旋转的从动齿轮，与驱动齿轮啮合并与驱动齿轮串联运动，并形成具有线性延伸齿的锥齿轮。 可以调节驱动齿轮和/或从动齿轮，使得两个元件之间的间隙可以以连续的，非阶梯的方式进行调节。
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公开(公告)号：US4676334A
公开(公告)日：1987-06-30
申请号：US855722
申请日：1986-04-25
CPC分类号： B62D6/00
摘要： A power steering system which includes a fluid source that supplies pressure fluid of a constant flow rate, a fluid motor for supplementing manual steering torque, a servo-valve for distributing fluid to the fluid motor, and a reaction device for applying hydraulic reaction or feeling to a steering wheel. A magnetic pressure control valve is connected to the reaction device to control fluid pressure applied thereto in accordance with a vehicle operating condition, such a vehicle speed. A flow dividing valve serves to divide the pressure fluid of a constant flow rate in a predetermined ratio into first and second flows which are respectively directed to the servo-valve and reaction device. The predetermined ratio is varied such that the flow rate of the fluid supplied to the reaction device increases as the pressure of the fluid supplied to the fluid motor increases.
摘要翻译： 一种动力转向系统，包括供给恒定流量的压力流体的流体源，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伺服阀，以及用于施加液压反应或感觉的反作用装置 到方向盘。 磁性压力控制阀连接到反应装置，以根据车辆操作条件（如这种车速）来控制施加到其上的流体压力。 分流阀用于将预定比例的恒定流量的压力流体分成分别指向伺服阀和反应装置的第一和第二流。 改变预定比例，使得供应到反应装置的流体的流量随着供应到流体马达的流体的压力增加而增加。
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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：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
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。
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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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