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1. 发明授权

US07694785B2 Controllable damping force hydraulic shock absorber 有权
标题翻译：可控阻尼力液压减震器
公开(公告)号：US07694785B2
公开(公告)日：2010-04-13
申请号：US11389234
申请日：2006-03-27
申请人： Takao Nakadate
发明人： Takao Nakadate
IPC分类号： F16F9/34
CPC分类号： F16F9/464 , F16F9/3484
摘要： A controllable damping force hydraulic shock absorber including a pilot type damping valve having a back-pressure chamber for each of an extension stroke and a compression stroke. A piston connected to a piston rod is fitted into a sealed cylinder in which a hydraulic fluid is contained. During an extension stroke of the piston rod, the hydraulic fluid in an upper cylinder chamber flows to a lower cylinder chamber through an extension-side hydraulic fluid passage, an extension-side orifice hydraulic fluid passage, an extension-side back-pressure chamber, an axial hydraulic fluid passage, a radial hydraulic fluid passage, a compression-side back-pressure chamber, an extension-side check valve and a compression-side hydraulic fluid passage. During a compression stroke, the hydraulic fluid in the lower cylinder chamber flows to the upper cylinder chamber through the compression-side hydraulic fluid passage, the compression-side orifice passage, the compression-side back-pressure chamber, the radial hydraulic fluid passage, the axial hydraulic fluid passage, the extension-side back-pressure chamber, the compression-side check valve and the extension-side hydraulic passage. The hydraulic fluid passage for an extension stroke and the hydraulic fluid passage for a compression stroke have some elements in common, thus simplifying the structure of the controllable damping force hydraulic shock absorber.
摘要翻译：一种可控阻尼力液压减震器，包括具有用于延伸行程和压缩冲程中的每一个的背压室的先导式阻尼阀。连接到活塞杆的活塞装配在其中容纳液压流体的密封气缸中。在活塞杆的延伸冲程期间，上汽缸室中的液压流体通过延伸侧液压流体通道，延伸侧孔口液压流体通道，延伸侧背压室，轴向液压流体通道，径向液压流体通道，压缩侧背压室，延伸侧止回阀和压缩侧液压流体通道。在压缩行程中，下气缸室中的液压流体通过压缩侧液压流路，压缩侧孔通路，压侧侧背压室，径向液压流路，轴向液压流体通道，延伸侧背压室，压缩侧止回阀和延伸侧液压通道。用于延伸行程的液压流体通道和用于压缩冲程的液压流体通道具有一些共同的元件，从而简化了可控阻尼力液压减震器的结构。

2. 发明授权

US07458448B2 Hydraulic shock absorber 有权
标题翻译：液压减震器
公开(公告)号：US07458448B2
公开(公告)日：2008-12-02
申请号：US11134453
申请日：2005-05-23
申请人： Hajime Katou , Hikaru Nakajima , Takao Nakadate
发明人： Hajime Katou , Hikaru Nakajima , Takao Nakadate
IPC分类号： F16F9/50
CPC分类号： F16F9/3485
摘要： A hydraulic shock absorber in which the flow of hydraulic fluid induced in each of extension and compression hydraulic fluid passages, by sliding movement of a piston, is controlled by a main disk valve to generate damping force. The valve opening pressure of the main disk valve is adjusted by the pressure in a back-pressure chamber. In a low piston speed region, the main disk valve closes a back-pressure chamber inlet passage. Therefore, the pressure in the backpressure chamber will not rise, and sufficiently small damping force is obtained. When the main disk valve opens, the backpressure chamber inlet passage opens simultaneously. Consequently, the pressure in the backpressure chamber rises, and the damping force increases.
摘要翻译：一种液压减震器，其中通过活塞的滑动运动在每个延伸和压缩液压流体通道中引起的液压流体的流动由主盘阀控制以产生阻尼力。主盘阀的开阀压力由背压室内的压力调节。在低活塞速度区域中，主盘阀关闭背压室入口通道。因此，背压室中的压力不会上升，并且获得足够小的阻尼力。当主盘阀打开时，背压室入口通道同时打开。因此，背压室中的压力升高，阻尼力增加。

3. 发明授权

US06860370B2 Controllable damping force hydraulic shock absorber 有权
标题翻译：可控阻尼力液压减震器
公开(公告)号：US06860370B2
公开(公告)日：2005-03-01
申请号：US10305345
申请日：2002-11-27
申请人： Takao Nakadate
发明人： Takao Nakadate
IPC分类号： F16F9/16 , F16F9/32 , F16F9/34 , F16F9/348 , F16F9/46
CPC分类号： F16F9/461 , F16F9/3485 , F16F9/466
摘要： A piston having a piston rod connected thereto is slidably fitted in a cylinder in which a hydraulic fluid is sealably contained. Extension-stroke and compression-stroke pilot type damping force control mechanisms are provided in the piston. Check valves are provided at inlet openings of back-pressure chambers (pilot chambers). Relief valves provided in the pilot chambers include orifice passages. When the direction of stroke of the piston rod is reversed, the pressures in the back-pressure chambers are maintained due to the check valves, and the back-pressure chambers are pressurized to a satisfactory level through the orifice passages.
摘要翻译：具有与其连接的活塞杆的活塞可滑动地装配在液压缸中，液压流体可密封地容纳在该气缸中。在活塞中设置有延伸行程和压缩行程先导式阻尼力控制机构。在背压室（导向室）的入口处设有止回阀。提供在先导室中的泄压阀包括孔口通道。当活塞杆的行程方向相反时，由于止回阀，背压室中的压力得以保持，并且背压室通过孔口通道被加压至令人满意的水平。

4. 发明授权

US6119829A Hydraulic shock absorber with variable damping resistance 有权
标题翻译：具有可变阻尼阻力的液压减震器
公开(公告)号：US6119829A
公开(公告)日：2000-09-19
申请号：US158883
申请日：1998-09-23
申请人： Takao Nakadate
发明人： Takao Nakadate
IPC分类号： F16F9/44 , F16F9/348 , B60G17/08 , F16F9/50
CPC分类号： F16F9/348
摘要： A hydraulic shock absorber includes disc valves seated on valve seats, and annular retainer discs having a diameter less than that of the valve seat. The retainer discs are guided by spacers and axially separable from the disc valves. Annular seal discs are disposed downstream of the disc valves. The inner periphery of the seal discs is partly overlapped with the outer periphery of the retainer discs. The outer peripheral edge of the retainer discs is in substantially linear contact with the disc valves. This arrangement restricts frictional resistance between the disc valves and the retainer discs when the disc valves are flexed and opened.
摘要翻译：液压减震器包括位于阀座上的盘阀和直径小于阀座直径的环形保持盘。保持盘由间隔件引导，并可与盘阀轴向分离。环形密封盘设置在盘阀的下游。密封盘的内周与保持盘的外周部分重叠。保持盘的外周边缘与盘阀大致直线接触。当盘阀弯曲和打开时，这种布置限制了盘阀和保持盘之间的摩擦阻力。

5. 发明授权

US5649611A Damping force control type hydraulic shock absorber 失效
标题翻译：阻尼力控制式液压减震器
公开(公告)号：US5649611A
公开(公告)日：1997-07-22
申请号：US580922
申请日：1995-12-29
申请人： Takao Nakadate
发明人： Takao Nakadate
IPC分类号： B60G17/06 , B60G17/08 , F16F9/32 , F16F9/46 , F16F9/50
CPC分类号： F16F9/325 , B60G17/08 , F16F9/46
摘要： A damping force control type hydraulic shock absorber has a damping force control mechanism adapted to generate damping force by controlling the flow of a hydraulic fluid sealed in a cylinder. Flow is induced by the extension and retraction of an operating rod inserted in the cylinder. The damping force control mechanism is further adapted to control the damping force by movement of its valve body. The damping force control mechanism is disposed on the side of the cylinder such that the direction of movement of the valve body is offset with respect to the center axis of the operating rod and crosses the center axis.
摘要翻译：阻尼力控制型液压减震器具有阻尼力控制机构，其适于通过控制密封在气缸中的液压流体的流动来产生阻尼力。通过插入圆柱体中的操作杆的伸缩来引起流动。阻尼力控制机构还适于通过其阀体的运动来控制阻尼力。阻尼力控制机构设置在气缸的侧面，使得阀体的运动方向相对于操作杆的中心轴线偏移并与中心轴线交叉。

6. 发明授权

US5402867A Shock absorber with auxiliary port in guide member to control hydrodynamic force 失效
标题翻译：减震器带辅助口导向件控制流体动力
公开(公告)号：US5402867A
公开(公告)日：1995-04-04
申请号：US207674
申请日：1994-03-09
申请人： Takao Nakadate , Takashi Nezu , Akira Kashiwagi
发明人： Takao Nakadate , Takashi Nezu , Akira Kashiwagi
IPC分类号： B60G13/08 , B60G17/015 , F16F9/44 , F16F9/46 , F16F9/34
CPC分类号： F16F9/468 , Y10T137/86751
摘要： 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).
摘要翻译：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。

7. 发明申请

US20120160624A1 SHOCK ABSORBER 有权
标题翻译：减震器
公开(公告)号：US20120160624A1
公开(公告)日：2012-06-28
申请号：US13338731
申请日：2011-12-28
申请人： Yohei KATAYAMA , Takao Nakadate , Kenji Noda , Mikio Yamashita , Fumiyuki Yamaoka
发明人： Yohei KATAYAMA , Takao Nakadate , Kenji Noda , Mikio Yamashita , Fumiyuki Yamaoka
IPC分类号： F16F9/34
CPC分类号： F16F9/3484 , F16F9/468 , F16F9/5126
摘要： A frequency-dependent mechanism provided at the lower end of a piston rod includes a tubular housing displaceable in an inner tube, together with the piston rod as one unit, and further includes a free piston and O-rings. A shutter of a passage area varying mechanism is provided with an axially extending inner hole, orifices, and oil grooves. The opening area between oil holes 3C and the orifices 33B is changed according to the rotational position of the shutter. The opening area between oil holes 3D and 3E and the oil grooves 33C and 33D and the opening area between oil holes 3F and 3G and the oil grooves 33E and 33F are also variably adjusted according to the rotational position of the shutter.
摘要翻译：设置在活塞杆下端的与频率相关的机构包括可与内筒一起移动的管状壳体，活塞杆作为一个单元，还包括自由活塞和O形环。通道区域变化机构的闸门设置有轴向延伸的内孔，孔和油槽。油孔3C和孔33B之间的开口面积根据活门的旋转位置而改变。油孔3D和3E之间的开口面积以及油槽33C和33D以及油孔3F和3G与油槽33E和33F之间的开口面积也根据挡板的旋转位置可变地调节。

8. 发明申请

US20100300821A1 VOLUME COMPENSATION ACCUMULATOR APPARATUS AND SUSPENSION SYSTEM USING THE SAME 失效
标题翻译：体积补偿累加器装置和使用它的悬挂系统
公开(公告)号：US20100300821A1
公开(公告)日：2010-12-02
申请号：US12730670
申请日：2010-03-24
申请人： Shunsuke Mori , Takao Nakadate , Kenichi Nakamura
发明人： Shunsuke Mori , Takao Nakadate , Kenichi Nakamura
IPC分类号： F16F9/14 , B60G17/04
CPC分类号： B60G11/30 , B60G17/0408 , B60G2202/154 , B60G2206/422 , F15B1/021
摘要： The present invention enables easy formation of an extremely small orifice in a volume compensation accumulator apparatus connected to a conduit connecting hydraulic cylinders in a suspension system. The volume compensation accumulator apparatus comprises an arrangement of the two orifice plates in series in a spaced-apart relation, which eliminates the necessity of reducing the diameters of the orifices while providing the same orifice characteristic as that of an orifice having a smaller diameter, thereby making the boring process of the orifice easy, and reducing clogging of the orifices with foreign objects.
摘要翻译：本发明能够容易地在连接到连接悬挂系统中的液压缸的导管的体积补偿蓄能器中形成极小的孔口。音量补偿蓄电装置包括两个间隔开的串联的孔板的布置，这消除了在提供与具有较小直径的孔口相同的孔口特性的同时减小孔口的直径的必要性，由此使孔的镗孔过程变得容易，并减少孔与异物的堵塞。

9. 发明授权

US06782980B2 Controllable damping force hydraulic shock absorber 有权
标题翻译：可控阻尼力液压减震器
公开(公告)号：US06782980B2
公开(公告)日：2004-08-31
申请号：US10305342
申请日：2002-11-27
申请人： Takao Nakadate
发明人： Takao Nakadate
IPC分类号： F16F900
CPC分类号： F16F9/3485 , F16F9/3214 , F16F9/461 , F16F9/466
摘要： A piston having a piston rod connected thereto is slidably fitted in a cylinder in which a hydraulic fluid is sealably contained. Extension-stroke and compression-stroke pilot type damping force control mechanisms are provided in the piston. A pilot control valve of the extension-stroke pilot type damping force control mechanism is formed by a pressure control valve having a valve seat, a valve body and a pressure-receiving portion. A pilot control valve of the compression-stroke pilot type damping force control mechanism is formed by a flow rate control valve having a spool. A slider having the valve body of the pressure control valve and the spool of the flow rate control valve is operated by a proportional solenoid, to thereby control a damping force for an extension stroke and a damping force for a compression stroke.
摘要翻译：具有与其连接的活塞杆的活塞可滑动地装配在液压缸中，液压流体可密封地容纳在该气缸中。在活塞中设置有延伸行程和压缩行程先导式阻尼力控制机构。延伸行程先导式阻尼力控制机构的先导控制阀由具有阀座，阀体和受压部的压力控制阀构成。压缩行程先导式阻尼力控制机构的先导控制阀由具有阀芯的流量控制阀形成。具有压力控制阀的阀体和流量控制阀的阀芯的滑块由比例螺线管操作，从而控制用于延伸行程的阻尼力和用于压缩冲程的阻尼力。

10. 发明授权

US06371262B1 Damping force control type hydraulic shock absorber 有权
标题翻译：阻尼力控制式液压减震器
公开(公告)号：US06371262B1
公开(公告)日：2002-04-16
申请号：US09560561
申请日：2000-04-28
申请人： Tetsuo Katou , Takashi Nezu , Takao Nakadate
发明人： Tetsuo Katou , Takashi Nezu , Takao Nakadate
IPC分类号： F16F934
CPC分类号： F16F9/465
摘要： The flow of a hydraulic fluid, which occurs under a sliding movement of a piston in a cylinder, is directly controlled by virtue of an extension-stroke pressure control valve and a compression-stroke pressure control valve. At the same time, the pressure in a back pressure chamber is varied, to thereby adjust the valve opening pressure for a main disk valve. This enables control of a damping force over a wide range. In each of the extension-stroke and compression-stroke pressure control valves, a thrust is generated in a slider due to a difference in pressure-receiving areas between a stepped portion of the slider and a sub disk valve in a valve chamber. The valve opening pressure is controlled, according to the balance between the thrust of the slider and a thrust of a proportional solenoid. By reducing the difference in the pressure-receiving areas in the valve chamber, the load applied to the proportional solenoid can be reduced.
摘要翻译：在气缸内的活塞的滑动运动下产生的液压流体的流动通过延伸冲程压力控制阀和压缩冲程压力控制阀直接控制。同时，背压室中的压力变化，从而调节主盘阀的开阀压力。这使得能够在宽范围内控制阻尼力。在每个延伸行程和压缩行程压力控制阀中，由于滑阀的阶梯部分和阀室中的副盘阀之间的压力接收区域的差异，在滑块中产生推力。根据滑块的推力和比例螺线管的推力之间的平衡来控制开阀压力。通过减小阀室中的受压面积的差异，可以减小施加在比例螺线管上的负荷。

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