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1. 发明授权

US5518380A Variable displacement pump having a changeover value for a pressure chamber 失效
标题翻译：具有压力室转换值的可变排量泵
公开(公告)号：US5518380A
公开(公告)日：1996-05-21
申请号：US380575
申请日：1995-01-30
申请人： Tadaaki Fujii , Hiroto Iwata , Yuuichi Kimura
发明人： Tadaaki Fujii , Hiroto Iwata , Yuuichi Kimura
IPC分类号： F04C2/344 , F04C14/22 , F04C14/24 , F04C15/04
CPC分类号： F04C14/226
摘要： A cam ring for forming a pump chamber on the outer periphery of a rotor which is rotatable in a body is arranged movably, and is urged in a direction in which the volume of the pump chamber is made maximum. Sealing means are interposed in an annular gap space on the outer periphery of the cam ring between the cam ring and the body, thereby forming first and second fluid-pressure chambers for allowing the cam ring to undergo displacement by moving. A spool-type changeover valve is provided which is operated in accordance with the discharge flow rate of the pressure fluid from the pump chamber to control the fluid pressure supplied to the first and second fluid-pressure chambers. The fluid pressure on the downstream side of a metering orifice 29 provided in a pump discharge-side passage 28 is introduced into the second fluid-pressure chamber for imparting moving displacement in the direction in which the volume of the pump chamber is made maximum, through a passage 37 via a second valve chamber 32b. It is possible to control the swinging of the cam ring, and to prevent fluctuations in the flow rate and a decline in the flow rate on the discharge side of the pump.
摘要翻译：用于在转子的外周上形成可在主体中旋转的泵室的凸轮环被可移动地设置，并且沿着使泵室的容积最大的方向被推动。密封装置插入在凸轮环和主体之间的凸轮环的外周上的环形间隙空间中，从而形成用于允许凸轮环通过移动而移位的第一和第二流体压力室。提供了一种阀芯式转换阀，其根据来自泵室的压力流体的排出流量进行操作，以控制供应到第一和第二流体压力室的流体压力。设置在泵排出侧通道28中的计量孔29的下游侧的流体压力被引入到第二流体压力室中，用于在泵室的容积最大化的方向上通过移动位移，通过通过第二阀室32b的通道37。可以控制凸轮环的摆动，并且防止流量的波动和泵排出侧的流量的下降。

2. 发明授权

US5289681A Power steering system 失效
标题翻译：动力转向系统
公开(公告)号：US5289681A
公开(公告)日：1994-03-01
申请号：US815408
申请日：1991-12-31
申请人： Hiroto Iwata
发明人： Hiroto Iwata
IPC分类号： B62D5/07 , B62D5/06 , B62D6/02 , F16D31/02
CPC分类号： B62D6/02 , B62D5/062 , Y10T137/2572 , Y10T137/2574
摘要： An oil pump which delivers an operating oil to a power steering mechanism of vehicle is designed to reduce the power which is wasted during a high speed operation. A subpump of a reduced capacity having a number of revolutions which varies with a vehicle speed is provided, in addition to a vane pump which delivers an operating oil to the power steering mechanism. A discharged oil from the subpump is delivered to act upon the rear surface of the vanes to enable a pumping action of the vane pump when operating at low speeds while the delivery of the discharged oil to the rear surface of the vanes is interrupted to cease the pumping action of the vane pump, and is delivered to the power steering mechanism when operating at higher speeds.
摘要翻译：将工作油输送到车辆的动力转向机构的油泵设计成能够降低高速运转时浪费的动力。除了将操作油输送到动力转向机构的叶片泵之外，还提供具有随车辆速度而变化的转数的能力降低的子泵。排出的来自副泵的排出的油被输送到叶片的后表面上，以便在以低速操作时能够使叶片泵的泵送作用，同时将排出的油输送到叶片的后表面被中断以停止叶片泵的抽吸作用，并且当以更高的速度运行时被输送到动力转向机构。

3. 发明授权

US5038822A Flow rate control valving apparatus 失效
标题翻译：流量控制阀装置
公开(公告)号：US5038822A
公开(公告)日：1991-08-13
申请号：US669807
申请日：1991-03-15
申请人： Hiroto Iwata
发明人： Hiroto Iwata
IPC分类号： B62D5/07 , F16K31/12 , G05D7/01 , G05D16/10
CPC分类号： G05D7/0126 , Y10T137/2579 , Y10T137/7791
摘要： A flow rate control valving apparatus includes a housing, a plug connector, and a tubular member. The housing has a valve bore in which a spool is movably housed. The plug connector is provided opposite to one end portion of the spool to form a high-pressure chamber for receiving a pressurized fluid from a pump between the spool and the plug connector. A small-diameter opening is formed in a portion of the plug connector opposite to the high-pressure chamber, and a supply passage connected to the small-diameter opening is formed in the plug connector to supply the pressurized fluid to a fluid system. The tubular member is fixed at a position in the supply passage in the plug connector, at which the tubular member engages with the distal end of an adjusting rod portion of the spool to regulate the movement of the spool toward the high-pressure chamber, and serves as a stopper for regulating the movement of the spool. A small hole portion communicating with the supply passage is formed in the tubular member, and an internal passage of the tubular member communicates with the small hole portion and the pressure guide passage extending to the other end portion of the spool.
摘要翻译：流量控制阀装置包括壳体，插头连接器和管状构件。壳体具有阀孔，其中可动地容纳线轴。插头连接器设置在线轴的一个端部的相对的一侧，以形成用于从卷轴和插头连接器之间的泵接收加压流体的高压室。在插头连接器的与高压室相对的部分形成小直径的开口，并且在插头连接器中形成连接到小直径开口的供给通道，以将加压流体供应到流体系统。管状构件固定在插头连接器的供给通道中的位置处，管状构件与阀芯的调节杆部分的远端接合，以调节阀芯朝向高压室的运动，以及用作调节滑阀运动的止动器。在管状部件中形成有与供给通路连通的小孔部，筒状部的内部通路与小孔部连通，压力引导通路延伸到卷轴的另一端部。

4. 发明授权

US5026263A Rotary vane pump with valve to control vane biassing 失效
标题翻译：旋转叶片泵带阀门，用于控制叶片偏压
公开(公告)号：US5026263A
公开(公告)日：1991-06-25
申请号：US441036
申请日：1989-11-22
申请人： Hiroto Iwata
发明人： Hiroto Iwata
IPC分类号： B62D5/07 , F01C21/08 , F04C14/06 , F04C14/26
CPC分类号： F04C14/06 , F01C21/0863
摘要： An oil pump of vane type is disclosed. Plates which hold a rotor and a cam ring therebetween have a groove formed in their suction region to allow a discharged oil to be introduced into such groove. The plates are also formed with a groove in their discharge region which communicates with the groove in the suction region through an orifice. The oil in these grooves act upon the back side of the vane to urge it into abutment against the cam ring. A passage is provided for connecting the groove in the discharge region to a low pressure side of the pump, and a valve opens or closes the passage to enable the pumping action to be turned on and off.
摘要翻译：公开了一种叶片式油泵。保持转子和凸轮环的板在其吸入区域之间形成有允许排出的油被引入到这种槽中的槽。板也在其排放区域形成有通过孔口与抽吸区域中的槽连通的槽。这些槽中的油作用在叶片的后侧，以推动其抵靠凸轮环。设置有用于将排出区域中的槽连接到泵的低压侧的通道，并且阀打开或关闭通道以使得泵送动作能够被打开和关闭。

5. 发明授权

US4289454A Rotary hydraulic device 失效
标题翻译：旋转液压装置
公开(公告)号：US4289454A
公开(公告)日：1981-09-15
申请号：US79770
申请日：1979-09-28
申请人： Hiroto Iwata
发明人： Hiroto Iwata
IPC分类号： F04C14/26 , B62D5/06 , F01C1/34 , F04B49/00 , F04C2/34 , F04C2/344 , F04C2/356 , F04C14/02
CPC分类号： F04C14/02
摘要： A rotary hydraulic device in which a pair of delivery ports of a vane pump communicate with independently separated delivery chambers, respectively, and the communication between one of the delivery chamber and a hydraulic machine is shut off after the flow rate of delivery fluid from the delivery port exceeds a certain level with the increase in the speed of rotation of the pump. The excess fluid from the delivery port is returned to the tank side which causes the decrease of the supply flow rate in the zone of high speed rotation of the pump and also the reduction of power consumption so that the rotary hydraulic device of the invention is especially suitable for the power steering devices of vehicles.
摘要翻译：一种旋转液压装置，其中叶片泵的一对输送口分别与独立分离的输送室连通，并且在输送流体从输送器流出的流速之后切断输送室和液压机之间的连通由于泵的转速提高，泵口超过一定水平。来自输送口的多余的液体返回到油箱侧，这导致泵的高速旋转区域中的供给流量的降低，并且还降低了功率消耗，使得本发明的旋转液压装置尤其是适用于车辆的动力转向装置。

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