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公开(公告)号：US5485724A
公开(公告)日：1996-01-23
申请号：US162142
申请日：1993-12-14
申请人： Yusaku Nozawa , Wataru Ohtsu , Nobuhiko Ichiki , Kazuyuki Ino , Hiroshi Matsuzaki , Kinya Takahashi
发明人： Yusaku Nozawa , Wataru Ohtsu , Nobuhiko Ichiki , Kazuyuki Ino , Hiroshi Matsuzaki , Kinya Takahashi
CPC分类号： E02F9/2296 , E02F9/2232 , E02F9/2239 , E02F9/2292 , F15B11/17 , F15B13/0417 , F15B2211/20553 , F15B2211/30595 , F15B2211/40515 , F15B2211/40569 , F15B2211/50536 , F15B2211/5157 , F15B2211/6052 , F15B2211/6309 , F15B2211/6313 , F15B2211/7142
摘要： A hydraulic drive system comprises a check valve cb1 for detecting a pressure on the outlet side of a pressure compensating device VB1, a maximum load pressure detecting line SL1 for selecting higher one of the pressure detected by the check valve cb1 and a load pressure of an actuator associated with a hydraulic pump P1 and supplying it as a signal pressure, a check valve cb2 for detecting a pressure on the outlet side of a pressure compensating device VB2, a maximum load pressure detecting line SL2 for selecting higher one of the pressure detected by the check valve cb2 and a load pressure of an actuator associated with a hydraulic pump P2 and supplying it as a signal pressure independently of the maximum load pressure detecting line SL1, and a passage 300 for joining hydraulic fluids supplied from the hydraulic pumps P1, P2 and passing through variable restrictors RB1, RB2 with each other and supplying it to an actuator B. Mutual independence between the two hydraulic pumps P1, P2 can be thereby ensured.
摘要翻译： PCT No.PCT / JP93 / 00677 Sec。 371日期1993年12月14日第 102（e）日期1993年12月14日PCT提交1993年5月21日PCT公布。 公开号WO93 / 24757 日期：1993年12月9日。液压驱动系统包括用于检测压力补偿装置VB1的出口侧的压力的止回阀cb1，用于选择由止回阀检测到的压力中的较高压力的最大负载压力检测线SL1 cb1和与液压泵P1相关联并将其作为信号压力供应的致动器的负载压力，用于检测压力补偿装置VB2的出口侧的压力的止回阀cb2，用于选择的最大负载压力检测线SL2 由止回阀cb2检测到的压力中的一个和与液压泵P2相关联的致动器的负载压力，并将其作为独立于最大负载压力检测线SL1的信号压力提供，以及用于连接供应的液压流体的通道300 从液压泵P1，P2中通过可变节流器RB1，RB2并将其供给到致动器B.两个水泵之间的相互独立性 从而可以确保制浆泵P1，P2。
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公开(公告)号：US5921165A
公开(公告)日：1999-07-13
申请号：US011555
申请日：1998-02-10
IPC分类号： E02F9/22 , F15B11/02 , F15B11/028 , F15B13/01 , F15B11/08
CPC分类号： E02F9/2267 , E02F9/226 , E02F9/2271 , F15B11/02 , F15B11/028 , F15B13/015 , F15B2211/20538 , F15B2211/30505 , F15B2211/30515 , F15B2211/30525 , F15B2211/3116 , F15B2211/329 , F15B2211/40515 , F15B2211/41527 , F15B2211/428 , F15B2211/46 , F15B2211/50518 , F15B2211/5151 , F15B2211/528 , F15B2211/55 , F15B2211/6355 , F15B2211/7053
摘要： In a hydraulic control system including a valve device B for controlling a hydraulic fluid supplied from a hydraulic pump A to a hydraulic cylinder C, the valve device comprises a spool 16 slidably fitted into a valve body 1, and a non-leak valve 27 for controlling communication of an actuator passage 19. The non-leak valve comprises a main valve section 40 including a seat valve 41 provided in the valve body, and a pilot control section 60 including a pilot poppet valve 61 provided in an end cover 31. The seat valve is controlled in proportion to an opening of the pilot poppet valve, and a relief valve 55 for preventing the hydraulic cylinder from being subject to an overload is built in the seat valve. The non-leak valve thus fulfills a load holding function and an overload relief function. By arranging the non-leak valve and the spool in two lines, the valve device can be made more compact.
摘要翻译： PCT No.PCT / JP97 / 02713 Sec。 371日期1998年2月10日 102（e）1998年2月10日PCT PCT 1997年8月5日PCT公布。 公开号WO98 / 06949 日期：1998年2月19日在包括用于控制从液压泵A供给到液压缸C的液压流体的阀装置B的液压控制系统中，阀装置包括可滑动地装配到阀体1中的阀芯16， - 用于控制致动器通道19的连通的泄漏阀27.无泄漏阀包括主阀部分40，其包括设置在阀体中的阀座41，以及引导控制部分60，其包括提供在阀 座盖阀与先导提升阀的开口成比例地被控制，并且用于防止液压缸遭受过载的安全阀55被内置在座阀中。 因此，无泄漏阀实现负载保持功能和过载释放功能。 通过将无泄漏阀和阀芯设置成两条线，可以使阀装置更紧凑。
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公开(公告)号：US6135149A
公开(公告)日：2000-10-24
申请号：US367232
申请日：1999-08-11
CPC分类号： F15B11/05 , F15B13/0417 , F15B2211/20553 , F15B2211/30505 , F15B2211/30535 , F15B2211/355 , Y10T137/87169 , Y10T137/87185
摘要： Pressure compensating valves disposed at inlet sides of directional control valves are each configured with a step-shaped spool having a larger diameter portion and smaller diameter portions and pressure receiving chambers are provided to sandwich the larger diameter portion such that a pump delivery pressure and an inlet pressure of a metering throttle of the directional control valve acts in the chambers, respectively, and further pressure receiving chambers are provided at respective ends of the smaller diameter portions such that an outlet pressure of the metering throttle and a signal pressure act in the chambers, respectively. A check valve operated by the outlet pressure of the metering throttle is fitted in the smaller diameter end portion positioned on the side of the pressure receiving chamber to reduce the pump delivery pressure and produce a signal pressure. A sleeve having opposed ends positioned in a pressure receiving chamber in which the outlet pressure of the metering throttle is introduced and in the pressure receiving chamber is fitted on the smaller diameter portion, and the outlet pressure of the metering throttle is introduced to the pressure receiving chamber by movement of the sleeve.
摘要翻译： PCT No.PCT / JP99 / 00051 Sec。 371日期1999年8月11日 102（e）1999年8月11日PCT PCT 1999年1月11日PCT公布。 出版物WO99 / 35408 日期1999年7月15日设置在方向控制阀的入口侧的压力补偿阀各自配置有具有较大直径部分和较小直径部分的阶梯形卷轴，并且设置压力接收室以夹持较大直径部分，使得泵 方向控制阀的计量节气门的输送压力和入口压力分别作用在室中，并且另外的压力接收室设置在较小直径部分的相应端部处，使得计量节流阀的出口压力和信号压力 分别在室内行事。 通过计量节流阀的出口压力操作的止回阀装配在位于压力接收室一侧的较小直径端部分中，以减小泵输送压力并产生信号压力。 具有相对端的套筒，其位于压力接收室中，其中计量节流阀的出口压力被引入并且在压力接收室中安装在较小直径部分上，并且计量节流阀的出口压力被引入压力接收 通过袖子的移动。
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公开(公告)号：US06327959B1
公开(公告)日：2001-12-11
申请号：US09600318
申请日：2000-07-13
IPC分类号： F15B1108
CPC分类号： E02F9/2267 , E02F9/2271 , F15B13/021 , F15B13/0418 , F15B2013/006 , Y10T137/86702
摘要： A recovery check valve 26 and a piston valve 27 are axially slidably disposed within a spool 2 in coaxial relation. An axial fluid passage 32 is formed within a cylindrical portion 27a of the piston valve 27, and a seat portion 33 for the recovery check valve is formed at an open end of the cylindrical portion 27a. The cylindrical portion 37a of the piston valve is formed with a hole 36 through which a hydraulic fluid in the fluid chamber 32 is introduced to a bridge passage 21 when the spool 2 is operated so as to introduce a hydraulic fluid from a hydraulic pump to the bottom side of a hydraulic cylinder. Fluid passages 40, 31 are formed within the spool so that a hydraulic fluid in the bridge passage 21 is introduced to the closed end of the piston valve through the fluid passages when the spool is operated in the opposite direction. With such a structure, the size of the valve apparatus can be set to the same size as the directional control valve not provided with the recovery check valve.
摘要翻译： 回收止回阀26和活塞阀27以同轴的关系轴向可滑动地设置在阀芯2内。 轴向流体通道32形成在活塞阀27的圆筒形部分27a内，并且用于回收止回阀的座部33形成在圆柱形部分27a的开口端。 活塞阀的圆筒部37a形成有孔36，当阀芯2被操作时，流体室32中的液压流体通过该孔36被引导到桥接通道21，以将来自液压泵的液压流体引入到 液压缸底部。 流体通道40,31形成在阀芯内，使得当阀芯沿相反方向操作时，桥式通道21中的液压流体通过流体通道被引入活塞阀的封闭端。 通过这样的结构，可以将阀装置的尺寸设定为与未设置回收止回阀的方向控制阀相同的尺寸。
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公开(公告)号：US5957159A
公开(公告)日：1999-09-28
申请号：US142870
申请日：1998-09-17
CPC分类号： E02F9/2267 , E02F9/2225 , E02F9/2271 , E02F9/2296 , F15B11/05 , F15B2211/20553 , F15B2211/3053 , F15B2211/30555 , F15B2211/3144 , F15B2211/329 , F15B2211/35 , F15B2211/71 , F15B2211/78 , Y10T137/87169 , Y10T137/87185
摘要： A pair of directional control valves 8 and a pair of hold check valves 9 are disposed respectively between a pair of metering notches 6, which are formed in a land 4-1 of a spool 2 and have functions of both flow rate control and direction control, and a pair of actuator ports A, B. Each hold check valve comprises a valve body 90 in the form of a hollow spool having a seat portion 12 formed on an outer periphery and being subject to a pressure developed in an outlet passage 10 communicating with one of the actuator ports to act in the valve-closing direction. Each flow distribution valve comprises a valve body 80 being slidably fitted in the valve body 90 and having a front surface positioned to face an inlet passage 7 communicating with the metering notch and a rear surface positioned to face an control pressure chamber 30 communicating with a signal detecting hydraulic line. The valve body 90 has a shape to maintain a balance between forces produced by a pressure in the control pressure chamber and acting upon the valve body. A slit 21 having a variable dead zone X2 is formed between the valve body 80 and the valve body 90 for detecting and introducing a pressure between an outlet portion of the flow distribution valve and an inlet portion of the hold check valve to the control pressure chamber. The casing structure and device construction of a directional control valve with postpositional type flow distribution valves are thereby simplified.
摘要翻译： PCT No.PCT / JP98 / 00197 Sec。 371日期：1998年9月17日 102（e）1998年9月17日PCT PCT 1998年1月20日PCT公布。 第WO98 / 31940号公报 日期1998年7月23日一对方向控制阀8和一对保持止回阀9分别设置在一对计量凹口6之间，这些计量凹口6形成在阀芯2的平台4-1中并且具有两个流动 速度控制和方向控制以及一对致动器端口A，B。每个保持止回阀包括中空阀芯形式的阀体90，该阀体具有形成在外周上的阀座部分12， 与致动器端口中的一个连通的出口通道10以沿阀关闭方向作用。 每个流量分配阀包括可滑动地装配在阀体90中的阀体80，其具有面向与计量凹口连通的入口通道7的前表面以及与信号通信的控制压力室30相对的后表面 检测液压管路。 阀体90具有保持由控制压力室中的压力产生的作用在阀体上的力之间的平衡的形状。 具有可变死区X2的狭缝21形成在阀体80和阀体90之间，用于检测和分配在分流阀的出口部分和保持止回阀的入口部分之间的压力到控制压力室 。 因此简化了具有后置式流量分配阀的方向控制阀的壳体结构和装置结构。
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公开(公告)号：US4919390A
公开(公告)日：1990-04-24
申请号：US288096
申请日：1988-12-22
申请人： Ken Ichiryu , Takashi Kanai , Masami Ochiai , Nobuhiko Ichiki
发明人： Ken Ichiryu , Takashi Kanai , Masami Ochiai , Nobuhiko Ichiki
CPC分类号： H01F7/1607 , H01F2007/085 , H01F2007/163
摘要： A solenoid operated valve apparatus in which a solenoid device includes an inner yoke, a plunger guide disposed in the opposed relationship with the inner yoke, a plunger movably accommodated in s space formed between the inner yoke and the plunger guide, a bobbin frame disposed to surround the inner yoke and said plunger guide, a coil wound around the bobbin frame, and an outer yoke disposed to surround the coil. The bobbin frame is made of a polymeric material, and is adhered to the inner yoke and the plunger guide in a unitary structure.
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公开(公告)号：US5301920A
公开(公告)日：1994-04-12
申请号：US27091
申请日：1993-02-19
申请人： Nobuhiko Ichiki
发明人： Nobuhiko Ichiki
CPC分类号： F16K31/0668 , F16K31/406 , Y10T137/7766
摘要： A high-speed solenoid valve apparatus has a body, and a high-speed solenoid valve section and a logic valve section disposed in the body. The high-speed solenoid valve section includes a solenoid valve outlet port communicating with a body outlet port, a solenoid valve sleeve including a solenoid valve inlet port, and a spool for opening and closing a communication path between the solenoid valve inlet port and the solenoid valve outlet port. The logic valve section has a logic valve sleeve guided by the inner wall of the body, having a logic valve inlet port communicating with a body inlet port and a logic valve outlet port communicating with the body outlet port, a poppet for controlling a communication path between the logic valve inlet port and the logic valve outlet port, a control chamber formed in the poppet and communicating with the logic valve inlet port via a small-diameter penetration hole, a return spring for applying a restoring force to the spool and the poppet, and a plate disposed between the solenoid valve sleeve and the logic valve sleeve and communicating between the control chamber and the solenoid valve inlet port. The solenoid valve sleeve and the plate are directly guided by the inner wall of the body, the solenoid valve outlet port is directly formed in the solenoid valve sleeve, and the solenoid valve sleeve, the plate and the logic valve sleeve are disposed in the body in closely stacked relation.
摘要翻译： PCT No.PCT / JP90 / 01145 Sec。 371日期1991年1月28日 102（e）日期1991年1月28日PCT 1990年9月6日PCT PCT。 出版物WO91 / 03672 日期1991年3月21日。高速电磁阀装置具有主体，高速电磁阀部分和设置在主体中的逻辑阀部分。 高速电磁阀部分包括与主体出口连通的电磁阀出口端口，包括电磁阀入口的电磁阀套筒和用于打开和关闭电磁阀入口和电磁阀之间的连通路径的阀芯 阀出口。 逻辑阀部分具有由主体的内壁引导的逻辑阀套筒，具有与主体入口连通的逻辑阀入口和与主体出口连通的逻辑阀出口端口，用于控制通信路径的提升阀 在逻辑阀入口和逻辑阀出口之间，形成在提升阀中并通过小直径通孔与逻辑阀入口连通的控制室，用于向卷轴施加恢复力的复位弹簧和提升阀 以及设置在电磁阀套筒和逻辑阀套筒之间并在控制室和电磁阀入口之间连通的板。 电磁阀套筒和板体由本体内壁直接引导，电磁阀出口直接形成在电磁阀套筒中，电磁阀套管，阀板和逻辑阀套管均设置在阀体 紧密堆叠的关系。
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公开(公告)号：US4706932A
公开(公告)日：1987-11-17
申请号：US514274
申请日：1983-07-15
申请人： Kunihiko Yoshida , Kenichi Koshi , Nobuhiko Ichiki
发明人： Kunihiko Yoshida , Kenichi Koshi , Nobuhiko Ichiki
IPC分类号： F16K31/143 , F15B11/08 , F15B13/04 , F16K17/10 , F16K31/122 , F16K31/12
CPC分类号： F16K17/10 , F15B13/0405 , Y10S251/90 , Y10T137/87209
摘要： A fluid control valve apparatus comprises logic valve means including a valve housing, a first valve member defined in the valve housing, and an axially movable valve body arranged in the first valve chamber, with the valve body including opposite end portions and a conical surface portion brought into contact with the conical surface portion when the valve body is moved in a valve closing direction. First and second hydraulic fluid chambers are defined in the valve housing and communicate with each other when the conical surface portion is out of contact with the valve seat and out of communication when the conical surface portion contacts the valve seat. A first pilot chamber in the valve housing, adjacent one end portion of the valve body, biases the valve body in a closing direction by a first pilot pressure signal. A second valve chamber is defined in the valve housing with an extension of the valve body being formed by extending the other end portion of the valve body through the first hydraulic fluid chamber, and is arranged in the second valve chamber for axial movement. An independent second pilot chamber biases the valve body in an opening direction by a second pilot pressure signal.
摘要翻译： 流体控制阀装置包括逻辑阀装置，其包括阀壳体，限定在阀壳体中的第一阀构件和布置在第一阀室中的可轴向移动的阀体，阀体包括相对的端部部分和锥形表面部分 当阀体沿关闭方向移动时与锥形表面部分接触。 当锥形表面部分与阀座脱离接触并且当锥形表面部分接触阀座时，第一和第二液压流体室限定在阀壳体中并且彼此连通。 在阀壳体中与阀体的一个端部相邻的第一引导室通过第一先导压力信号沿着关闭方向偏压阀体。 第二阀室限定在阀壳体中，阀体的延伸部通过使阀体的另一端部延伸穿过第一液压流体室而形成，并且布置在第二阀室中用于轴向移动。 独立的第二先导室通过第二先导压力信号沿打开方向偏压阀体。
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公开(公告)号：US07265304B2
公开(公告)日：2007-09-04
申请号：US11295617
申请日：2005-12-07
IPC分类号： H01H25/00
CPC分类号： G05G9/047 , E02F9/2004 , F15B13/0424 , G05G2009/04748 , Y10T74/20201
摘要： A joystick for an electro-hydraulic control system is provided with a rotary potentiometer having a pivotable arm. This pivotable arm is integrally arranged on a rotary shaft and pivots responsive to pivotal control of a joystick in a predetermined direction or a direction opposite to the predetermined direction. The joystick is also provided with a torsion coil spring for normally holding the pivotable arm in a neutral position, a pin arranged on the pivotable arm and capable of expanding the torsion coil spring upon pivotal movement of the pivotable arm, a holding pin for holding the torsion coil spring at its coil portion, and a cover member having a pair of guide portions for limiting movements of the coil portion of the torsion coil spring in the predetermined direction and the opposition direction when the torsion coil spring is in its neutral position.
摘要翻译： 用于电液控制系统的操纵杆设置有具有可枢转臂的旋转电位器。 该可枢转臂一体地布置在旋转轴上并且响应于操纵杆在预定方向或与预定方向相反的方向的枢转控制而枢转。 操纵杆还设置有用于将可枢转臂正常地保持在中立位置的扭力螺旋弹簧，设置在可枢转臂上的销，并且能够在可枢转臂的枢转运动时使扭转螺旋弹簧膨胀;保持销， 扭转螺旋弹簧在其线圈部分，以及盖构件，具有一对引导部分，用于在扭转螺旋弹簧处于其中立位置时限制扭转螺旋弹簧的线圈部分在预定方向和相反方向上的运动。
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公开(公告)号：US20060117891A1
公开(公告)日：2006-06-08
申请号：US11295617
申请日：2005-12-07
IPC分类号： G05G9/047
CPC分类号： G05G9/047 , E02F9/2004 , F15B13/0424 , G05G2009/04748 , Y10T74/20201
摘要： A joystick for an electro-hydraulic control system is provided with a rotary potentiometer having a pivotable arm. This pivotable arm is integrally arranged on a rotary shaft and pivots responsive to pivotal control of a joystick in a predetermined direction or a direction opposite to the predetermined direction. The joystick is also provided with a torsion coil spring for normally holding the pivotable arm in a neutral position, a pin arranged on the pivotable arm and capable of expanding the torsion coil spring upon pivotal movement of the pivotable arm, a holding pin for holding the torsion coil spring at its coil portion, and a cover member having a pair of guide portions for limiting movements of the coil portion of the torsion coil spring in the predetermined direction and the opposition direction when the torsion coil spring is in its neutral position.
摘要翻译： 用于电液控制系统的操纵杆设置有具有可枢转臂的旋转电位器。 该可枢转臂一体地布置在旋转轴上并且响应于操纵杆在预定方向或与预定方向相反的方向的枢转控制而枢转。 操纵杆还设置有用于将可枢转臂正常地保持在中立位置的扭力螺旋弹簧，设置在可枢转臂上的销，并且能够在可枢转臂的枢转运动时使扭转螺旋弹簧膨胀，保持销用于保持 扭转螺旋弹簧在其线圈部分，以及盖构件，具有一对引导部分，用于在扭转螺旋弹簧处于其中立位置时限制扭转螺旋弹簧的线圈部分在预定方向和相反方向上的运动。
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