公开(公告)号：US08794400B2

公开(公告)日：2014-08-05

申请号：US12385130

申请日：2009-03-31

申请人： Takao Nakadate ,  Takashi Nezu ,  Yohei Katayama ,  Shigeo Katayama ,  Hiroyuki Yabe

发明人： Takao Nakadate ,  Takashi Nezu ,  Yohei Katayama ,  Shigeo Katayama ,  Hiroyuki Yabe

IPC分类号： F16F9/34

CPC分类号： F16F9/464

摘要： 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.

摘要翻译： 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：US20090242339A1

公开(公告)日：2009-10-01

申请号：US12385130

申请日：2009-03-31

申请人： Takao Nakadate ,  Takashi Nezu ,  Yohei Katayama ,  Shigeo Katayama ,  Hiroyuki Yabe

发明人： Takao Nakadate ,  Takashi Nezu ,  Yohei Katayama ,  Shigeo Katayama ,  Hiroyuki Yabe

IPC分类号： F16F9/46

CPC分类号： F16F9/464

摘要： An object of the present invention is to provide 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 a 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 28, and a valve-opening pressure of the main valve 27 is adjusted by adjusting an inner pressure of a back-pressure chamber 53. In the pressure control valve 28, a valve spring 57 is disposed between a valve body 56 and a plunger 34. A mass of the valve body 56 is sufficiently less than that of a plunger 34, and a spring stiffness of the valve spring 57 is higher than that of a plunger spring 36. As a result, it is possible to improve the responsiveness of the valve body 56 to prevent response delay in a damping force control. In addition, since the natural frequency of the valve body 56 is high, it is possible to prevent self-excited vibration of the valve body 56.

摘要翻译： 本发明的目的是提供一种阻尼力可调的液压减震器，其中可以防止压力控制阀的响应延迟和阀体的自激振动。 通过使用背压式主阀27和压力控制阀28通过使气缸中的活塞滑动运动而产生的环形油路21和储存器4之间的油流控制来产生阻尼力。 由压力控制阀28直接产生阻尼力，通过调整背压室53的内压来调整主阀27的开阀压力。在压力控制阀28中，阀弹簧57为 设置在阀体56和柱塞34之间。阀体56的质量足够小于柱塞34的质量，并且阀弹簧57的弹簧刚度高于柱塞弹簧36的弹簧刚度。结果 ，可以提高阀体56的响应性，以防止阻尼力控制中的响应延迟。 此外，由于阀体56的固有频率高，因此能够防止阀体56的自激振动。

公开(公告)号：US20110024245A1

公开(公告)日：2011-02-03

申请号：US12805313

申请日：2010-07-26

申请人： Takashi Nezu ,  Atsufumi Ishimoto ,  Shigeo Katayama

发明人： Takashi Nezu ,  Atsufumi Ishimoto ,  Shigeo Katayama

IPC分类号： F16F9/32

CPC分类号： F16F9/5126

摘要： 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.

摘要翻译： 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：USD489982S1

公开(公告)日：2004-05-18

申请号：US29188355

申请日：2003-08-19

申请人： Yasushi Ueda ,  Shigeo Katayama

设计人： Yasushi Ueda ,  Shigeo Katayama

公开(公告)号：US09285006B2

公开(公告)日：2016-03-15

申请号：US14345528

申请日：2012-09-10

申请人： Shigeo Katayama

发明人： Shigeo Katayama

IPC分类号： F16F9/32 ,  F16F9/34 ,  F16F9/18

CPC分类号： F16F9/325 ,  F16F9/185 ,  F16F9/3257 ,  F16F9/34

摘要： A shock absorber including a piston inserted into a cylinder (2) having a hydraulic oil sealed therein. An outer tube (3) is provided around the outer periphery of the cylinder to form a reservoir (4) therebetween. A bottomed circular cylindrical casing (25) is joined to a side surface portion of the outer tube, and a damping force control valve (27) is housed in the casing. The bottomed circular cylindrical casing has a bottom (25A) formed with a joint surface (25B) curved along the outer peripheral surface of the outer tube and a flat inner surface (25C). The casing is integrally formed by forging.

摘要翻译： 一种减震器，包括插入到其中密封有液压油的气缸（2）中的活塞。 外筒（3）围绕圆柱体的外周设置以在其间形成储液器（4）。 有底的圆筒形壳体（25）连接到外管的侧表面部分，并且阻尼力控制阀（27）容纳在壳体中。 有底的圆筒形壳体具有形成有沿着外管的外周表面弯曲的接合表面（25B）的底部（25A）和平坦的内表面（25C）。 外壳通过锻造整体形成。

公开(公告)号：US20140231200A1

公开(公告)日：2014-08-21

申请号：US14345528

申请日：2012-09-10

申请人： Shigeo Katayama

发明人： Shigeo Katayama

IPC分类号： F16F9/32

CPC分类号： F16F9/325 ,  F16F9/185 ,  F16F9/3257 ,  F16F9/34

摘要： A shock absorber including a piston inserted into a cylinder (2) having a hydraulic oil sealed therein. An outer tube (3) is provided around the outer periphery of the cylinder to form a reservoir (4) therebetween. A bottomed circular cylindrical casing (25) is joined to a side surface portion of the outer tube, and a damping force control valve (27) is housed in the casing. The bottomed circular cylindrical casing has a bottom (25A) formed with a joint surface (25B) curved along the outer peripheral surface of the outer tube and a flat inner surface (25C). The casing is integrally formed by forging.

摘要翻译： 一种减震器，包括插入到其中密封有液压油的气缸（2）中的活塞。 外筒（3）围绕圆柱体的外周设置以在其间形成储液器（4）。 有底的圆筒形壳体（25）连接到外管的侧表面部分，并且阻尼力控制阀（27）容纳在壳体中。 有底的圆筒形壳体具有形成有沿着外管的外周表面弯曲的接合表面（25B）的底部（25A）和平坦的内表面（25C）。 外壳通过锻造整体形成。