公开(公告)号：US20120247889A1

公开(公告)日：2012-10-04

申请号：US13423637

申请日：2012-03-19

申请人： Hiroyuki Yabe ,  Yohei Katayama ,  Takashi Nezu

发明人： Hiroyuki Yabe ,  Yohei Katayama ,  Takashi Nezu

IPC分类号： F16F9/508 ,  F16F9/06

CPC分类号： F16F9/465

摘要： 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.

摘要翻译： 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冲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：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：US08800729B2

公开(公告)日：2014-08-12

申请号：US13423637

申请日：2012-03-19

申请人： Hiroyuki Yabe ,  Yohei Katayama ,  Takashi Nezu

发明人： Hiroyuki Yabe ,  Yohei Katayama ,  Takashi Nezu

IPC分类号： F16F9/34

CPC分类号： F16F9/465

摘要： 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.

摘要翻译： 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

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：US20080257668A1

公开(公告)日：2008-10-23

申请号：US12078150

申请日：2008-03-27

申请人： Hiroyuki Yamaguchi ,  Yohei Katayama ,  Hiroyuki Hayama ,  Takashi Nezu

发明人： Hiroyuki Yamaguchi ,  Yohei Katayama ,  Hiroyuki Hayama ,  Takashi Nezu

IPC分类号： F16F9/48

CPC分类号： F16F9/465 ,  F16F9/3485

摘要： An object of the present invention is to generate a stable damping force and enhance durability of a main valve in a hydraulic 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 3, 4. 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.

摘要翻译： 本发明的一个目的是产生稳定的阻尼力并提高液压缓冲器中的主阀的耐久性，其中主阀的阀开度由背压室的内压控制。 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，使得在第一和第二活塞3,4之间限定活塞室2C。 延伸侧主阀18和压缩侧主阀23设置在活塞室2C中。主阀的阀开口由延伸侧背压室19和压缩侧背压室24控制。 在第一活塞3和第二活塞4上设有压缩侧止回阀13和延伸侧单向阀16。 在活塞杆10的延伸行程中，压缩侧止回阀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，延伸侧单向阀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，并且提高延伸侧主阀18和压缩侧主阀23的耐久性。

公开(公告)号：US06817454B2

公开(公告)日：2004-11-16

申请号：US10316040

申请日：2002-12-11

申请人： Takashi Nezu ,  Yohei Katayama

发明人： Takashi Nezu ,  Yohei Katayama

IPC分类号： F16F946

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

摘要： 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.

摘要翻译： 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：US08544619B2

公开(公告)日：2013-10-01

申请号：US12078150

申请日：2008-03-27

申请人： Hiroyuki Yamaguchi ,  Yohei Katayama ,  Hiroyuki Hayama ,  Takashi Nezu

发明人： Hiroyuki Yamaguchi ,  Yohei Katayama ,  Hiroyuki Hayama ,  Takashi Nezu

IPC分类号： F16F9/48

CPC分类号： F16F9/465 ,  F16F9/3485

摘要： 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).

摘要翻译： 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。

公开(公告)号：US20120305348A1

公开(公告)日：2012-12-06

申请号：US13578351

申请日：2010-02-12

申请人： Yohei Katayama ,  Takashi Nezu

发明人： Yohei Katayama ,  Takashi Nezu

IPC分类号： B60G17/08 ,  F16F9/34 ,  F16F9/50

CPC分类号： B60G17/08 ,  B60G2500/10 ,  F16F9/464

摘要： Provided is a suspension apparatus capable of preventing excessive increase in damping force due to a sudden input from the road surface when the damping force is adjusted to a minimum value during running. A damping force control type hydraulic shock absorber (1) includes a damping force adjusting valve (25) which adjusts a damping force by a current supplied to a pressure control valve for controlling a pilot pressure. A control device (ECU) outputs a minimum control current I=0.5 A to cause the damping force control type hydraulic shock absorber (1) to generate a minimum damping force. When the minimum control current is supplied, the pressure control valve of the damping force adjusting valve (25) is always opened. Thus, an increase of the damping force caused by a rapid increase of the pilot pressure due to the sudden input from the road surface is suppressed.

摘要翻译： 提供一种悬架装置，其能够防止在行驶中将阻尼力调整为最小值时，由路面突然输入引起的阻尼力的过度增加。 阻尼力控制型液压缓冲器（1）包括阻尼力调节阀（25），该阻尼力调节阀（25）通过提供给用于控制先导压力的压力控制阀的电流来调节阻尼力。 控制装置（ECU）输出最小控制电流I = 0.5A以使阻尼力控制型液压缓冲器（1）产生最小阻尼力。 当提供最小控制电流时，阻尼力调节阀（25）的压力控制阀总是打开。 因此，由于由路面的突然输入引起的先导压力的迅速增加而引起的阻尼力的增加被抑制。

公开(公告)号：US07757826B2

公开(公告)日：2010-07-20

申请号：US12076737

申请日：2008-03-21

申请人： Hiroyuki Hayama ,  Yohei Katayama ,  Takashi Nezu

发明人： Hiroyuki Hayama ,  Yohei Katayama ,  Takashi Nezu

IPC分类号： F16F9/34

CPC分类号： F16F9/3485 ,  F16F9/465

摘要： A first piston and a second piston coupled to a piston rod are fitted in a cylinder, and an intermediate chamber is formed between the first and second pistons. A compression-side check valve and an extension-side check valve are provided at the first piston and the second piston. An extension-side main valve and a compression-side main valve are disposed in the intermediate chamber. A downstream side of a damping force adjusting valve is connected to the intermediate chamber. Inner pressures of an extension-side backpressure chamber and a compression-side backpressure chamber are adjusted by the damping force adjusting valve, whereby valve opening of the extension-side and compression-side main valves is controlled. Hydraulic fluid of the downstream side of the damping force adjusting valve is first sent into the intermediate chamber, and then is sent to a cylinder upper chamber or a cylinder lower chamber. Due to this arrangement, it is possible to prevent a sudden drastic change in a hydraulic fluid pressure and thereby to generate a stable damping force.

摘要翻译： 联接到活塞杆的第一活塞和第二活塞装配在气缸中，并且在第一和第二活塞之间形成中间室。 压缩侧止回阀和延伸侧单向阀设置在第一活塞和第二活塞上。 延伸侧主阀和压缩侧主阀设置在中间室中。 阻尼力调节阀的下游侧连接到中间室。 通过阻尼力调节阀调整延伸侧背压室和压缩侧背压室的内压，由此控制延伸侧和压缩侧主阀的开阀。 阻尼力调节阀的下游侧的液压流体首先被送入中间室，然后被送到气缸上腔室或气缸下腔室。 由于这种布置，可以防止液压流体压力急剧变化，从而产生稳定的阻尼力。

公开(公告)号：US20090272611A1

公开(公告)日：2009-11-05

申请号：US12076737

申请日：2008-03-21

申请人： Hiroyuki Hayama ,  Yohei Katayama ,  Takashi Nezu

发明人： Hiroyuki Hayama ,  Yohei Katayama ,  Takashi Nezu

IPC分类号： F16F9/50

CPC分类号： F16F9/3485 ,  F16F9/465

摘要： A first piston and a second piston coupled to a piston rod are fitted in a cylinder, and an intermediate chamber is formed between the first and second pistons. A compression-side check valve and an extension-side check valve are provided at the first piston and the second piston. An extension-side main valve and a compression-side main valve are disposed in the intermediate chamber. A downstream side of a damping force adjusting valve is connected to the intermediate chamber. Inner pressures of an extension-side backpressure chamber and a compression-side backpressure chamber are adjusted by the damping force adjusting valve, whereby valve opening of the extension-side and compression-side main valves is controlled. Hydraulic fluid of the downstream side of the damping force adjusting valve is first sent into the intermediate chamber, and then is sent to a cylinder upper chamber or a cylinder lower chamber. Due to this arrangement, it is possible to prevent a sudden drastic change in a hydraulic fluid pressure and thereby to generate a stable damping force.

摘要翻译： 联接到活塞杆的第一活塞和第二活塞装配在气缸中，并且在第一和第二活塞之间形成中间室。 压缩侧止回阀和延伸侧单向阀设置在第一活塞和第二活塞上。 延伸侧主阀和压缩侧主阀设置在中间室中。 阻尼力调节阀的下游侧连接到中间室。 通过阻尼力调节阀调整延伸侧背压室和压缩侧背压室的内压，由此控制延伸侧和压缩侧主阀的开阀。 阻尼力调节阀的下游侧的液压流体首先被送入中间室，然后被送到气缸上腔室或气缸下腔室。 由于这种布置，可以防止液压流体压力急剧变化，从而产生稳定的阻尼力。