公开(公告)号：US09046145B2

公开(公告)日：2015-06-02

申请号：US13479821

申请日：2012-05-24

Applicant: Hiroshi Murakami ,  Osamu Yuno ,  Tomohiko Fujioka ,  Takashi Nezu ,  Shunsuke Mori

Inventor： Hiroshi Murakami ,  Osamu Yuno ,  Tomohiko Fujioka ,  Takashi Nezu ,  Shunsuke Mori

IPC: F16F9/34 ,  F16F9/46 ,  F16F9/32

CPC classification number: F16F9/464 ,  F16F9/325 ,  F16F2226/04

Abstract: A shock absorber in which a flow of hydraulic oil caused by sliding movement of a piston in a cylinder is controlled by a pilot type main valve and a pilot valve to generate damping force. The valve-opening operation of the main valve is controlled by adjusting the pressure in a pilot chamber with the pilot valve. A valve block and a solenoid block are connected together into one unit and inserted into a casing before being secured with a nut. At this time, an actuating rod of the solenoid block is engaged with a pilot valve member retained by a pilot spring and a fail-safe spring in a cylindrical portion of a pilot body of the valve block.

Abstract translation: 一种减振器，其中由气缸中的活塞的滑动运动引起的液压油流由先导式主阀和先导阀控制，以产生阻尼力。 通过用先导阀调节先导室中的压力来控制主阀的开阀操作。 在用螺母固定之前，将阀块和螺线管块连接在一起，并插入到壳体中。 此时，螺线管块的致动杆与由先导弹簧保持的先导阀构件和阀块的先导体的圆筒部中的故障保护弹簧接合。

公开(公告)号：US20110024245A1

公开(公告)日：2011-02-03

申请号：US12805313

申请日：2010-07-26

Applicant: Takashi Nezu ,  Atsufumi Ishimoto ,  Shigeo Katayama

Inventor： Takashi Nezu ,  Atsufumi Ishimoto ,  Shigeo Katayama

IPC: F16F9/32

CPC classification number: F16F9/5126

Abstract: A shock absorber comprising: a cylinder; a piston partitioning the cylinder into two chambers; a piston rod; a by-pass passage passing through the chambers; and a damping-force adjusting mechanism adjusting a passage area of the by-pass passage, wherein the adjusting mechanism includes: a shutter guide; a shutter movably guided by the shutter guide; and an elastic member elastically retaining the shutter at an initial position, an adjustable passage adjusting the passage area of the by-pass passage as that opening is varied by shift of the shutter is formed, shift of the shutter is not influenced by pressure difference between the chambers, and when the shutter is at the initial position, the adjustable passage is opened with a predetermined degree, and the shutter moves to close the adjustable passage by fluid force that generates by flow of the working fluid of the adjustable passage against elastic force of the elastic member.

Abstract translation: 一种减震器，包括：气缸; 活塞将气缸分成两个腔室; 活塞杆 经过室的旁路通道; 以及调节旁路通路的通路面积的阻尼力调节机构，其特征在于，所述调整机构包括：挡板引导件; 由快门引导件可移动地引导的快门; 弹性构件弹性地将闸板保持在初始位置，形成调节通道的可调节通道，因为该开口通过挡板的移动而改变，因此挡板的移动不受压力差的影响 并且当快门处于初始位置时，可调节通道以预定的程度打开，并且活门移动以通过可调节通道的工作流体的流动的弹力产生的流体力来关闭可调节通道 的弹性构件。

公开(公告)号：US06817454B2

公开(公告)日：2004-11-16

申请号：US10316040

申请日：2002-12-11

Applicant: Takashi Nezu ,  Yohei Katayama

Inventor： Takashi Nezu ,  Yohei Katayama

IPC: F16F946

CPC classification number: B60G17/08 ,  B60G2202/24 ,  B60G2500/102 ,  B60G2500/114 ,  F16F9/3405 ,  F16F9/348 ,  F16F9/465 ,  F16F9/466 ,  F16F9/5126

Abstract: A piston connected to a piston rod is slidably fitted in a cylinder having a hydraulic fluid sealed therein. First and second poppet valves having different valve opening characteristics are provided in first and second extension main passages, respectively. A pilot control valve is provided in a sub-passage. The control pressure of the pilot control valve is adjusted by a proportional solenoid, thereby controlling damping force. At the same time, the pressure at the upstream side of the pilot control valve is introduced into back-pressure chambers to adjust the valve opening pressures of the first and second poppet valves. Because the first and second poppet valves are sequentially opened or closed, damping force can be controlled stepwisely, and ideal damping force characteristics can be obtained.

Abstract translation: 连接到活塞杆的活塞可滑动地装配在其中密封有液压流体的气缸中。 具有不同阀开启特性的第一和第二提升阀分别设置在第一和第二延伸主通道中。 在副通路中设有先导控制阀。 先导控制阀的控制压力由比例螺线管调节，从而控制阻尼力。 同时，先导控制阀的上游侧的压力被引入到背压室中，以调节第一和第二提升阀的开启压力。 由于第一和第二提升阀顺序地打开或关闭，所以可以逐步地控制阻尼力，并且可以获得理想的阻尼力特性。

公开(公告)号：US5960915A

公开(公告)日：1999-10-05

申请号：US911349

申请日：1997-08-07

Applicant: Takashi Nezu ,  Akira Kashiwagi

Inventor： Takashi Nezu ,  Akira Kashiwagi

IPC: F16F9/50 ,  F16F9/32 ,  F16F9/46

CPC classification number: F16F9/46 ,  F16F9/325 ,  F16F9/465

Abstract: The present invention provides a hydraulic shock absorber in which a damping force can be changed nearly linearly as a valve body driven by a proportional solenoid is displaced, by utilizing ports and a oil groove which can easily be formed by a conventional machine tool such as a drilling machine or a lathe. Oil passages and an annular groove connected to the oil passages are formed in a surface of a cylindrical guide portion along which a plunger can slide, and, circular oil passages and an annular groove connected to and offset from the oil passages are formed in a surface of a plunger. The oil passages and annular groove in the plunger can easily be formed by a conventional machine tool such as a drilling machine or a lathe. When an oil path is opened, the oil passages are firstly opened and then the associated annular groove is opened. Thus, a damping force can be changed nearly linearly, and response to the switching of the damping force can be improved.

Abstract translation: 本发明提供了一种液压减震器，其中当由比例螺线管驱动的阀体被移位时，阻尼力可以几乎线性地变化，通过利用端口和油槽，其可以容易地由常规的机床例如 钻床或车床。 在柱塞可以滑动的圆筒形引导部分的表面上形成油通道和连接到油路的环形槽，并且在一个表面上形成圆形油道和与油路连接并偏离的环形槽 的柱塞。 柱塞中的油通道和环形槽可以容易地由诸如钻床或车床的常规机床形成。 当油路打开时，首先打开油路，然后打开相关联的环形槽。 因此，可以近似线性地改变阻尼力，并且可以提高对阻尼力的切换的响应。

公开(公告)号：US5586627A

公开(公告)日：1996-12-24

申请号：US246299

申请日：1994-05-19

Applicant: Takashi Nezu ,  Akira Kashiwagi

Inventor： Takashi Nezu ,  Akira Kashiwagi

IPC: B60G17/08 ,  F16F9/46 ,  F16F9/516 ,  B62K25/10

CPC classification number: B60G17/08 ,  F16F9/46 ,  F16F9/465 ,  F16F9/516

Abstract: The present invention is directed to a damping force adjustable hydraulic shock absorber including a cylinder filled with a hydraulic fluid, a piston slidably mounted within the cylinder to divide the interior of the cylinder into two chambers, and a piston rod having one end connected to the piston and the other end extending out of the cylinder. A damping force generating mechanism is provided to communicate between the two chambers and to generate a damping force. A communication passage for communicating one of two chambers in the cylinder with the other chamber and a valve are provided in the communication passage and are adapted to generate the damping force by opening in response to one way flow of the liquid. The shock absorber has a valve opening pressure adjusting mechanism having a back pressure chamber communicating with an upstream portion of the communication passage with respect to the valve. The adjusting mechanism is adapted to change a valve opening pressure of the valve in accordance with a pressure in the back pressure chamber. Also, a relief valve is provided which permits communication between the back pressure chamber and a downstream portion of the communication passage. The relief valve is capable of adjusting the pressure in the back pressure chamber.

Abstract translation: 本发明涉及一种阻尼力可调的液压减震器，其包括：填充有液压流体的气缸;可滑动地安装在气缸内的活塞，将气缸的内部分成两个腔室;活塞杆，其一端连接到 活塞，另一端延伸出气缸。 提供阻尼力产生机构以在两个室之间连通并产生阻尼力。 用于将气缸中的两个腔室中的一个与另一个腔室和阀连通的连通通道设置在连通通道中，并且适于通过响应于液体的单向流动而打开而产生阻尼力。 减震器具有阀开启压力调节机构，其具有与连通通道相对于阀的上游部分连通的背压室。 调节机构适于根据背压室中的压力改变阀的开阀压力。 而且，提供一种安全阀，其允许背压室与连通通道的下游部分之间的连通。 安全阀能够调整背压室中的压力。

公开(公告)号：US5402867A

公开(公告)日：1995-04-04

申请号：US207674

申请日：1994-03-09

Applicant: Takao Nakadate ,  Takashi Nezu ,  Akira Kashiwagi

Inventor： Takao Nakadate ,  Takashi Nezu ,  Akira Kashiwagi

IPC: B60G13/08 ,  B60G17/015 ,  F16F9/44 ,  F16F9/46 ,  F16F9/34

CPC classification number: F16F9/468 ,  Y10T137/86751

Abstract: A cylinder (7) having a hydraulic fluid sealed therein is fitted with a piston (8) having a piston rod (9) connected thereto. The piston rod (9) is provided with a bypass passage (B) (generating relatively small damping force). The passage area of the bypass passage (B) is controlled by varying the area of orifices formed by guide ports (21 and 22) and shutter ports (24 and 25) by rotating a shutter (23), thereby changing damping force characteristics. Auxiliary ports (34 and 35) are provided to open into the guide ports (21 and 22), respectively. The hydraulic fluid jetted out into the shutter (23) from the orifices formed by the guide ports (21 and 22) and the shutter ports (24 and 25) is directed to flow approximately perpendicularly to the direction of sliding of the shutter (23) by the hydraulic fluid jetted out from the auxiliary ports (34 and 35), thereby reducing the hydrodynamic force acting in the sliding direction of the shutter (23), and thus minimizing the force required to actuate and hold the shutter (23).

Abstract translation: 具有密封在其中的液压流体的气缸（7）装配有具有连接到其上的活塞杆（9）的活塞（8）。 活塞杆（9）设有旁通通路（B）（产生较小的阻尼力）。 旁通通道（B）的通道面积通过旋转活门（23）来改变由导向口（21和22）和闸门口（24和25）形成的孔的面积来控制，从而改变阻尼力特性。 辅助端口（34和35）分别设置成打开到引导端口（21和22）中。 从由引导口（21和22）和快门端口（24和25）形成的孔口喷射到闸门（23）中的液压流体指向大致垂直于闸门（23）的滑动方向流动， 通过从辅助端口（34和35）喷出的液压流体，从而减小沿闸门（23）的滑动方向作用的流体动力，从而最小化启动和保持挡板（23）所需的力。

公开(公告)号：US5350077A

公开(公告)日：1994-09-27

申请号：US75091

申请日：1993-06-11

Applicant: Takashi Nezu ,  Minoru Iwagami ,  Hisayoshi Kawashima

Inventor： Takashi Nezu ,  Minoru Iwagami ,  Hisayoshi Kawashima

IPC: B61G1/28

CPC classification number: B61G1/283

Abstract: Method and device for coupling a self-propelled truck with a carrying truck, wherein the self-propelled truck is provided with a female engagement member having right and left catching spacings, whereas the carrying truck is provided with a male engagement pin, and wherein, while the self-propelled truck is moving along a rectilinear or curved path, the male engagement pin is caught and engaged in one of the right and left catching spacings, thereby effecting automatic, unmanned coupling of those two trucks. Also, an uncoupling arrangement is provided by disposing an uncoupling stand member at a proper uncoupling point and an uncoupling arm member at the self-propelled truck.

Abstract translation: 用于将自走式卡车与搬运车联接的方法和装置，其中所述自走式卡车设置有具有右和左接合间隔的阴接合构件，而所述搬运车设置有阳接合销， 而自走式卡车沿着直线或弯曲的路径移动时，公接合销被夹紧并接合在左右两个捕获间隔之一中，从而实现这两辆卡车的自动无人联接。 而且，通过在自推进式卡车处将适合的非耦合点处的非耦合支架构件和解耦臂构件设置为非耦合布置。

公开(公告)号：US08800729B2

公开(公告)日：2014-08-12

申请号：US13423637

申请日：2012-03-19

Applicant: Hiroyuki Yabe ,  Yohei Katayama ,  Takashi Nezu

Inventor： Hiroyuki Yabe ,  Yohei Katayama ,  Takashi Nezu

IPC: F16F9/34

CPC classification number: F16F9/465

Abstract: During either of the extension and compression strokes, hydraulic liquid flows from a cylinder upper chamber into a reservoir through an annular passage and a damping force control mechanism, and a damping force is generated by the damping force control mechanism. The check valve is provided with a sub-check valve in parallel thereto, which opens in a very low piston speed region to allow the hydraulic liquid to flow through an orifice passage. These check valves are opened successively as the piston speed increases, thereby generating a sufficiently small damping force in the very low piston speed region during the compression stroke of the piston rod, and obtaining a moderate damping force when the piston speed increases.

Abstract translation: 在任一延伸和压缩冲程期间，液压液体通过环形通道和阻尼力控制机构从气缸上部腔室流入储存器，并且衰减力由阻尼力控制机构产生。 止回阀具有与其平行的副止回阀，其在非常低的活塞速度区域中打开，以允许液压液体流过孔口通道。 随着活塞速度的增加，这些止回阀依次打开，从而在活塞杆的压缩行程期间在非常低的活塞速度区域产生足够小的阻尼力，并且当活塞速度增加时获得适度的阻尼力。

公开(公告)号：US08794400B2

公开(公告)日：2014-08-05

申请号：US12385130

申请日：2009-03-31

Applicant: Takao Nakadate ,  Takashi Nezu ,  Yohei Katayama ,  Shigeo Katayama ,  Hiroyuki Yabe

Inventor： Takao Nakadate ,  Takashi Nezu ,  Yohei Katayama ,  Shigeo Katayama ,  Hiroyuki Yabe

IPC: F16F9/34

CPC classification number: F16F9/464

Abstract: A damping force adjustable hydraulic shock absorber, in which response delay of a pressure control valve and self-excited vibration of a valve body can be prevented. A damping force is generated by controlling an oil flow between an annular oil passage (21) and a reservoir (4) generated by sliding movement of a piston in a cylinder with use of a back-pressure type main valve (27) and a pressure control valve (28). The damping force is directly generated by the pressure control valve, and valve-opening pressure of the main valve is adjusted by adjusting an inner pressure of a back-pressure chamber. In the pressure control valve, a valve spring is disposed between a valve body and a plunger. A mass of the valve body is sufficiently less than that of the plunger, and a spring stiffness of the valve spring is higher than that of a plunger spring.

Abstract translation: 阻尼力可调液压减震器，其中可以防止压力控制阀的响应延迟和阀体的自激振动。 通过控制通过使用背压型主阀（27）的气缸中的活塞的滑动运动而产生的环形油路（21）和储存器（4）之间的油流，产生阻尼力， 控制阀（28）。 阻尼力由压力控制阀直接产生，通过调整背压室的内压来调节主阀的开阀压力。 在压力控制阀中，阀弹簧设置在阀体和柱塞之间。 阀体的质量足够小于柱塞的质量，并且阀弹簧的弹簧刚度高于柱塞弹簧的弹簧刚度。

公开(公告)号：US08544619B2

公开(公告)日：2013-10-01

申请号：US12078150

申请日：2008-03-27

Applicant: Hiroyuki Yamaguchi ,  Yohei Katayama ,  Hiroyuki Hayama ,  Takashi Nezu

Inventor： Hiroyuki Yamaguchi ,  Yohei Katayama ,  Hiroyuki Hayama ,  Takashi Nezu

IPC: F16F9/48

CPC classification number: F16F9/465 ,  F16F9/3485

Abstract: A fluid pressure shock absorber in which valve opening of the main valve is controlled by an inner pressure of a backpressure chamber. A first piston (3) and a second piston (4) coupled to a piston rod (10) are fitted in a cylinder (2) such that a piston chamber (2C) is defined between the first and second pistons. An extension-side main valve (18) and a compression-side main valve (23) are provided in the piston chamber (2C). Valve opening of the main valves is controlled by an extension-side backpressure chamber (19) and a compression-side backpressure chamber (24). A compression-side check valve (13) and an extension-side check valve (16) are provided at the first piston (3) and the second piston (4). During an extension stroke of the piston rod (10), the compression-side check valve (13) is closed, whereby action of a pressure of a cylinder upper chamber (2A) on the compression-side main valve (23) is prevented. During a compression stroke of the piston rod (10), the extension-side check valve (16) is closed, whereby action of a pressure of a cylinder lower chamber (2B) on the extension-side main valve (18) is prevented. Accordingly, it is possible to generate a stable damping force, and enhance durability of the extension-side main valve (18) and the compression-side main valve (23).

Abstract translation: 一种流体压力减震器，其中主阀的阀门开度由背压室的内部压力控制。 联接到活塞杆（10）的第一活塞（3）和第二活塞（4）装配在气缸（2）中，使得活塞室（2C）被限定在第一和第二活塞之间。 在活塞室（2C）中设置有延伸侧主阀（18）和压缩侧主阀（23）。 主阀的开阀由延伸侧背压室（19）和压缩侧背压室（24）控制。 在第一活塞（3）和第二活塞（4）处设置有压缩侧止回阀（13）和延伸侧止回阀（16）。 在活塞杆（10）的延伸行程中，压缩侧单向阀（13）关闭，从而防止压缩侧主阀（23）上的气缸上腔室（2A）的压力的作用。 在活塞杆（10）的压缩行程期间，延伸侧止回阀（16）关闭，从而防止了延伸侧主阀（18）上的气缸下腔室（2B）的压力的作用。 因此，可以产生稳定的阻尼力，提高延伸侧主阀（18）和压缩侧主阀（23）的耐久性。