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1. 发明专利

JP2009228775A Hydraulic shock absorber 审中-公开
标题翻译：液压减震器
公开(公告)号：JP2009228775A
公开(公告)日：2009-10-08
申请号：JP2008074518
申请日：2008-03-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ISHIMOTO ATSUSHI , NEZU TAKASHI
IPC分类号： F16F9/34
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic shock absorber superior in responsiveness when reversing a stroke.
SOLUTION: This hydraulic shock absorber has main passages 25 and 35 communicating an upper chamber 13 with a lower chamber 14, normally closing damping valves 26 and 36 arranged in the main passages 25 and 35 and opening when upstream side pressure exceeds valve opening pressure, and bypass passages 27 and 37 arranged in parallel to the main passages 25 and 35 and communicating the upper chamber 13 with the lower chamber 14. Normally open bypass valves 29 and 39 closing when upstream side pressure of orifices 28 and 38 exceeds valve closing pressure lower than the valve opening pressure of the damping valves 26 and 36, are arranged in series to the orifices 28 and 38 of the bypass passages 27 and 37.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种在反转行程时响应性优异的液压减震器。解决方案：该液压减震器具有将上室13与下室14连通的主通道25和35，通常关闭在主通道25和35中布置的阻尼阀26和36，并且当上游侧压力超过阀门开度时打开压力和旁通通道27和37，它们平行于主通道25和35布置，并将上部腔室13与下部腔室14连通。当孔口28和38的上游侧压力超过阀门关闭时常开的旁路阀门29和39关闭低于阻尼阀26和36的开阀压力的压力与旁通通道27和37的孔28和38串联布置。（C）2010，JPO和INPIT

2. 发明专利

JP2009058081A Magnetic fluid damper 审中-公开
标题翻译：磁流体阻尼器
公开(公告)号：JP2009058081A
公开(公告)日：2009-03-19
申请号：JP2007226936
申请日：2007-08-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HAYAMA HIROYUKI , KATAYAMA YOHEI , NEZU TAKASHI
IPC分类号： F16F9/53 , F16F9/32
摘要： PROBLEM TO BE SOLVED: To reduce usage of magnetic viscous fluid without causing large increase of the number of parts and man hours for assembly, and reduce cost for a fluid damper.
SOLUTION: A cylinder 1 stores a first free piston 8 which partitions a fluid chamber 10 in which working fluid FL is sealed from a fluid chamber 20 in which the magnetic viscous fluid MR is sealed in an axial direction, a tank 2 which is communicated with the fluid chamber 20 stores a second free piston 18 which partitions a gas chamber 22 in which gas is sealed, a piston 4 having oil passages 11, 12 is slidably arranged in the fluid chamber 10, and an electromagnetic unit 17 having a fluid passage 21 is arranged in a fixed position in the fluid chamber 20. Damping force is generated by fluid resistance of the working fluid FL and the magnetic viscous fluid MR in accordance with extension/contraction of a piston rod 5, and working fluid FR equivalent to the retraction and advance of the piston rod 5 is compensated by slide of the first and second free pistons 8, 18, thus operating the magnetic viscous fluid damper with the fluid movement corresponding to the displacement of the fluid chamber 20.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了减少磁性粘性流体的使用，而不会导致部件数量的大量增加和组装时间，并且降低流体阻尼器的成本。解决方案：气缸1存储第一自由活塞8，其将工作流体FL被密封的流体室10与其中沿着轴向方向密封磁性粘性流体MR的流体室20分隔开;罐2 与流体室20连通的部件存储分隔有气体被密封的气室22的第二自由活塞18，具有可滑动地布置在流体室10中的油通道11,12的活塞4和具有流体通道21布置在流体室20中的固定位置。根据活塞杆5的伸展/收缩，工作流体FL和磁性粘性流体MR的流体阻力产生阻尼力，工作流体FR相当于通过第一和第二自由活塞8,18的滑动来补偿活塞杆5的缩回和前进，从而通过与流体的位移对应的流体运动来操作磁性粘性流体阻尼器 d室20.版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2008267489A Hydraulic shock absorber 有权
标题翻译：液压减震器
公开(公告)号：JP2008267489A
公开(公告)日：2008-11-06
申请号：JP2007111048
申请日：2007-04-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAGUCHI HIROYUKI , KATAYAMA YOHEI , HAYAMA HIROYUKI , NEZU TAKASHI
IPC分类号： F16F9/348
CPC分类号： F16F9/465 , F16F9/3485
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic shock absorber with main valves which are controlled to be opened by pressure in back pressure chambers, for generating stable damping force and improving the durability of the main valves.
SOLUTION: First and second pistons 3, 4 to which a piston rod 10 is connected are fitted into a cylinder 2 to form a piston chamber 2C therebetween. Elongation and shrinkage side main valves 18, 23 are provided in the piston chamber 2C, and they are controlled to be opened by elongation and shrinkage side back pressure chambers 19, 24. Elongation and shrinkage side check valves 13, 16 are provided for the first and second pistons 3, 4. In the elongation stroke of the piston rod 10, the shrinkage side check valve 13 is closed and pressure in a cylinder upper chamber 2A does not operate on the shrinkage side main valve 23. In the shrinkage stroke, the elongation side check valve 16 is closed and pressure in a cylinder lower chamber 2B does not operate on the elongation side main valve. This generates stable damping force and improves the durability of the elongation and shrinkage side main valves 18, 23.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有主阀的液压减震器，其被控制为通过背压室中的压力打开，用于产生稳定的阻尼力并提高主阀的耐久性。解决方案：连接有活塞杆10的第一活塞3,4和第二活塞3,4装配在气缸2中，以在它们之间形成活塞室2C。延伸收缩侧主阀18,23设置在活塞室2C中，并且通过伸长和收缩侧背压室19,24被控制为打开。伸缩和收缩侧止回阀13,16设置在第一在活塞杆10的伸长行程中，收缩侧止回阀13关闭，气缸上部腔2A中的压力不对收缩侧主阀23动作。在收缩行程中，伸长侧止回阀16关闭，气缸下室2B内的压力不在伸长侧主阀上动作。这产生稳定的阻尼力并提高伸长率和收缩侧主阀18,23的耐久性。版权所有：（C）2009，JPO＆INPIT

4. 发明专利

JP2008256129A Cylinder device 审中-公开
标题翻译：气缸装置
公开(公告)号：JP2008256129A
公开(公告)日：2008-10-23
申请号：JP2007100249
申请日：2007-04-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAZAKI TATSU , NEZU TAKASHI
IPC分类号： F16F9/348 , F16F9/19
摘要： PROBLEM TO BE SOLVED: To provide a cylinder device capable of reducing an axial length of a piston part while maintaining conventional performance by improving a valve member.
SOLUTION: When a main disk valve 17 is opened, an elastic seal 18 slides on an inner periphery of an outside diameter part 11, and thereby, an axial length of the outside diameter part 11 in accordance with an opening amount of the main valve disk valve 17 is required. In this preferred embodiment, an axial length of the valve member 10 is set in accordance with the required minimum axial length of the outside diameter part 11, and a back pressure chamber 19 is provided, and a sub valve pressure chamber 27 confronting the inner peripheral side of the back pressure chamber 19 in the radial direction is provided, and the axial length can be minimized. Further, a sub valve 26 and a valve seat 25 are within a range of the axial length of the valve member 10, and can be arranged to confront the back pressure chamber 19 in the radial direction. Thus, the axial length including a valve laminated part can be reduced while maintaining the conventional performance, and a basic length of the cylinder device can be reduced.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：解决的问题：提供一种能够通过改善阀构件而保持常规性能的同时减小活塞部件的轴向长度的气缸装置。解决方案：当主盘阀17打开时，弹性密封件18在外径部分11的内周上滑动，从而根据外径部分11的打开量，外径部分11的轴向长度需要主阀盘阀17。在本实施方式中，根据外径部11的所需最小轴向长度设定阀构件10的轴向长度，设置有背压室19，并且设置副阀压力室27，设置背压室19的径向的一侧，轴向长度可以最小化。此外，副阀26和阀座25位于阀构件10的轴向长度的范围内，并且可以布置成在径向方向上面对背压室19。因此，可以在保持常规性能的同时减小包括阀层压部件的轴向长度，并且可以减小气缸装置的基本长度。版权所有（C）2009，JPO＆INPIT

5. 发明专利

JP2009243591A Damping force adjusting shock absorber and suspension device using same 审中-公开
标题翻译：阻尼力调节震动吸收器和使用相同的悬挂装置
公开(公告)号：JP2009243591A
公开(公告)日：2009-10-22
申请号：JP2008090951
申请日：2008-03-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATAYAMA YOHEI , NEZU TAKASHI , MATSUMOTO HIROYUKI , YABE HIROYUKI
IPC分类号： F16F9/46
摘要： PROBLEM TO BE SOLVED: To prevent excessive increase of damping force by inhibiting a rise of pressure in a back pressure chamber against high frequency vibration in a pilot (back pressure) type damping force adjusting hydraulic shock absorber.
SOLUTION: Damping force is generated by controlling flow of oil between an annular oil passage 21 and a reservoir 4 generated by sliding of a piston in a cylinder by a pilot (back pressure) type damping valve 27 and a pressure control valve 28 (solenoid valve) in the damping force adjusting shock absorber. Damping force can be directly generated by the pressure control valve 28 and open pressure of the damping valve 27 can be controlled by adjusting inner pressure in a back pressure chamber 53, and an adjustment range of damping force characteristics can be widened. Amplitude of a movable mass 63 is amplified due to resonance against unsprung resonance (high frequency vibration) of a suspension device of a vehicle, and pressure in the back pressure chamber 53 is relieved by opening relief ports 69, 70. Consequently, excessive increase of damping force is prevented and deterioration of ride comfort is prevented.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了防止在先导（背压）型阻尼力调节液压减震器中通过抑制背压室中的压力升高以防高频振动来防止阻尼力的过度增加。解决方案：通过控制通过先导（背压）型阻尼阀27和压力控制阀28在气缸中滑动活塞而产生的环形油通道21和储存器4之间的油流动来产生阻尼力（电磁阀）在阻尼力调节减震器中。压力控制阀28可以直接产生阻尼力，阻尼阀27的打开压力可以通过调整背压室53的内压来控制，并且能够扩大阻尼力特性的调整范围。由于与车辆的悬挂装置的非共振共振（高频振动）的共振而放大可移动质量块63的振幅，并且通过打开释放口69,70，可以减轻背压室53中的压力。因此，过度增加阻止了阻尼力，并且防止了乘坐舒适性的恶化。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2009243530A Fluid pressure damper 审中-公开
标题翻译：液压阻尼器
公开(公告)号：JP2009243530A
公开(公告)日：2009-10-22
申请号：JP2008088724
申请日：2008-03-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NEZU TAKASHI , KATAYAMA YOHEI , YABE HIROYUKI , MATSUMOTO HIROYUKI
IPC分类号： F16F9/34 , B60G17/08 , F16F9/32
摘要： PROBLEM TO BE SOLVED: To provide a fluid pressure damper in which riding quality is improved effectively. SOLUTION: The fluid pressure damper comprises a bottom valve mechanisms 51, 54 which allow fluid to flow from a reservoir 33 into a bottom side chamber 17 and apply resistance forces to the fluid of the flow at least from the bottom side chamber 17 into the reservoir 33, a bypass passage 90 making the bottom side chamber 17 communicate with the reservoir 33 by bypassing the bottom valve mechanisms 51, 54, a valve body 61 installed in the bypass passage 90 movably in the axial direction of a cylinder to open and close the bypass passage 90, and communication passages 41, 47 which substantially equalize pressure on both-end sides in a moving direction of the valve body 61. The valve body 61 has such a predetermined mass that is urged at least from one side of a moving direction by an urging means 62, closes the bypass passage 90 at a stationary position by urging a force of the urging means 62, and opens the bypass passage 90 by moving from the stationary position. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种有效提高骑乘质量的流体压力阻尼器。解决方案：流体压力阻尼器包括底阀机构51,54，其允许流体从储存器33流入底侧室17，并且至少从底侧室17向流体施加阻力通过旁通底阀机构51,54，使底侧室17与储液器33连通的旁通通道90，安装在旁通路90中的阀体61沿圆筒的轴向移动以打开并且关闭旁路通道90以及连通通道41,47，其基本上均衡在阀体61的移动方向上的两端侧的压力。阀体61具有这样的预定质量，至少从通过推动装置62的移动方向，通过推动推动装置62的力而在静止位置闭合旁路通道90，并且通过从静止位置移动来打开旁路通道90。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2009234545A Stabilizer device 审中-公开
标题翻译：稳定器装置
公开(公告)号：JP2009234545A
公开(公告)日：2009-10-15
申请号：JP2008086832
申请日：2008-03-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATAYAMA SHIGERO , NEZU TAKASHI
IPC分类号： B60G21/055 , B60G17/015 , F16D1/02
摘要： PROBLEM TO BE SOLVED: To provide a stabilizer device in which an actuator is configured to be compact and the rigidity of a connection portion of a reduction gear casing and a motor casing is ensured. SOLUTION: The outer diameter of the connection portion 4 is set to be the same as those of the reduction gear casing 15 and the motor casing 18. In addition, rotation regulating means is disposed inside shaft movement regulating means. Thus, the actuator 1 can be structured to be compact. Further, the rigidity of the respective casings 15, 18 is ensured because the casings 15, 18 are little affected by torsional torque and bending moment. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种稳定装置，其中致动器构造得紧凑，并且确保了减速机壳体和电动机壳体的连接部分的刚性。解决方案：连接部分4的外径被设定为与减速齿轮箱15和马达壳体18的外径相同。此外，旋转调节装置设置在轴运动调节装置的内部。因此，致动器1可以构造成紧凑。此外，由于壳体15,18几乎不受扭转力矩和弯曲力矩的影响，因此确保了各个壳体15,18的刚度。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2008267488A Hydraulic shock absorber 审中-公开
标题翻译：液压减震器
公开(公告)号：JP2008267488A
公开(公告)日：2008-11-06
申请号：JP2007111031
申请日：2007-04-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HAYAMA HIROYUKI , KATAYAMA YOHEI , NEZU TAKASHI , NAKATATE TAKAO
IPC分类号： F16F9/32
摘要： PROBLEM TO BE SOLVED: To reduce the sliding resistance of a piston in a hydraulic shock absorber with two pistons attached to a piston rod. SOLUTION: A first piston 3 and a second piston 4, coupled to the piston rod 10 are fitted into a cylinder 2 filled with oil, and an oil flow generated by sliding the first and second pistons 3, 4 in the cylinder 2 is controlled by an expansion-side damping valve B1 and a contraction-side damping valve B2 to thereby generate damping force. A piston band 41 is mounted into the peripheral groove 39 of the second piston 4 through an O-ring 40, and the second piston 4 is radially displaced with respect to the inner wall of the cylinder 2 by elasticity of the O-ring 40. When lateral force acts on the piston rod 10, the second piston 4 is radially displaced to allow the inclination of the piston rod 10, thereby suppressing an increase in the sliding resistance of the first and second pistons 3, 4. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：减少具有附接到活塞杆的两个活塞的液压减震器中的活塞的滑动阻力。解决方案：联接到活塞杆10的第一活塞3和第二活塞4装配到充满油的气缸2中，并且通过使气缸2中的第一和第二活塞3,4滑动而产生的油流由膨胀侧阻尼阀B1和收缩侧阻尼阀B2控制，从而产生阻尼力。活塞带41通过O形环40安装到第二活塞4的周向槽39中，并且第二活塞4通过O形环40的弹性而相对于气缸2的内壁径向移位。当侧向力作用在活塞杆10上时，第二活塞4径向移动以允许活塞杆10的倾斜，从而抑制第一和第二活塞3,4的滑动阻力增加。版权所有：（C）2009，JPO＆INPIT

9. 发明专利

JP2008267487A Damping force adjustable hydraulic shock absorber 有权
标题翻译：阻尼力可调式液压减震器
公开(公告)号：JP2008267487A
公开(公告)日：2008-11-06
申请号：JP2007111030
申请日：2007-04-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HAYAMA HIROYUKI , KATAYAMA YOHEI , NEZU TAKASHI
IPC分类号： F16F9/34 , F16F9/46
CPC分类号： F16F9/3485 , F16F9/465
摘要： PROBLEM TO BE SOLVED: To generate a stable damping force by suppressing a sudden fluctuation in oil pressure, in a damping force adjustable hydraulic shock absorber provided with a pilot type damping valve. SOLUTION: A first piston 3 and a second piston 4, coupled to a piston rod 10 are fitted into a cylinder 2, and an intermediate chamber 2C is formed between the first and second pistons. A contraction-side check valve 13 and an expansion-side check valve 16 are respectively provided at the first piston 3 and the second piston 4. An expansion-side main valve 18 and a contraction-side main valve 23 are disposed in the intermediate chamber 2C, and the downstream side of a damping force adjusting valve 36 is connected to the intermediate chamber 2C. Inner pressures of an expansion-side backpressure chamber 19 and a contraction-side backpressure chamber 24 are adjusted by the damping force adjusting valve 36, thereby controlling valve opening of the expansion-side main valve 18 and the contraction-side main valve 23. After oil downstream of the damping force adjusting valve 36 is temporarily led to flow into the intermediate chamber 2C, oil flows to a cylinder upper chamber 2A or a cylinder lower chamber 2B. Thereby, the stable damping force is generated by suppressing the sudden fluctuation in oil pressure. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：在具有先导式阻尼阀的阻尼力可调液压减震器中，通过抑制油压的突然波动来产生稳定的阻尼力。解决方案：联接到活塞杆10的第一活塞3和第二活塞4装配到气缸2中，并且在第一和第二活塞之间形成中间室2C。收缩侧单向阀13和膨胀侧止回阀16分别设置在第一活塞3和第二活塞4上。膨胀侧主阀18和收缩侧主阀23设置在中间室并且阻尼力调节阀36的下游侧连接到中间室2C。通过阻尼力调节阀36调节膨胀侧背压室19和收缩侧背压室24的内压，从而控制膨胀侧主阀18和收缩侧主阀23的阀开度。阻尼力调节阀36的下游的油暂时被引导进入中间室2C，油流入气缸上腔2A或气缸下室2B。因此，通过抑制油压的突然波动来产生稳定的阻尼力。版权所有（C）2009，JPO＆INPIT

10. 发明专利

JP2009243636A Damping force adjustable shock absorber and suspension control device using same 有权
标题翻译：阻尼力可调减震器和悬挂控制装置
公开(公告)号：JP2009243636A
公开(公告)日：2009-10-22
申请号：JP2008093351
申请日：2008-03-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATAYAMA YOHEI , NEZU TAKASHI , NAKATATE TAKAO
IPC分类号： F16F9/50 , B60G17/015 , B60G17/08 , F16F9/46
摘要： PROBLEM TO BE SOLVED: To prevent excessive increase of damping force by inhibiting a rise of pressure in a back pressure chamber in response to high frequency vibration in a pilot (back pressure) type damping force adjustable hydraulic shock absorber.
SOLUTION: The damping force adjustable shock absorber generates damping force by controlling flow of oil between an annular oil passage 21 and a reservoir 4 generated by a slide movement of a piston in a cylinder by a pilot (back pressure) type damping valve 27 and a pressure control valve 28 (solenoid control valve). The damping force is directly generated by the pressure control valve 28 and valve-opening pressure of the damping valve 27 is controlled by adjusting inner pressure of the back pressure chamber 53. Since resistant force against movement in a valve-opening direction is larger than resistant force against movement in a valve-closing direction in a valve body 58 of the pressure control valve 28, valve close delay to unsprung resonance (high frequency vibration) of a suspension device occurs, a valve opening state is maintained to continuous input, and damping force drops. Consequently, deterioration of ride comfort due to excessive rise of damping force can be prevented.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了防止响应于先导（背压）型阻尼力可调液压减震器中的高频振动而抑制背压室中的压力升高来阻止阻尼力的过度增加。解决方案：阻尼力可调减震器通过控制通过先导（背压）型阻尼阀在气缸中的活塞滑动运动而产生的环形油路21和储存器4之间的油流动来产生阻尼力 27和压力控制阀28（电磁控制阀）。阻尼力由压力控制阀28直接产生，并通过调节背压室53的内压来控制阻尼阀27的开阀压力。由于阻力在打开方向上的运动大于阻力压力控制阀28的阀体58中的阻止关闭方向的运动的力，发生悬挂装置的阀紧闭延迟到非共振共振（高频振动），阀打开状态保持为连续输入，阻尼力下降。因此，可以防止由阻尼力的过度上升引起的乘坐舒适性的恶化。版权所有（C）2010，JPO＆INPIT

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