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1. 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

2. 发明专利

JP2008189007A Suspension device 有权
标题翻译：悬挂装置
公开(公告)号：JP2008189007A
公开(公告)日：2008-08-21
申请号：JP2007022246
申请日：2007-01-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATAYAMA YOHEI , TAKEMOTO KEIICHI , KAMAE RYOSUKE , KAMIYAMA MASARU
IPC分类号： B60G3/28 , B60G7/00 , B60G13/06 , B62D5/04 , B62D7/18
摘要： PROBLEM TO BE SOLVED: To provide a suspension device capable of further saving a space for a steer-by-wire system and making an operation for assembling the steer-by-wire system to a vehicle body efficient.
SOLUTION: A steering shaft 12 is rotated around an axial line by an actuator, and a flange part 16 and a hub 17 are rotated relative to a suspension assembly 23 around the axial line of the steering shaft 12 to steer a wheel 19. Thereby, there is no need of a steering rod, and a steering device can be housed inside the wheel 19 so as to save a space for a steer-by-wire system. Also, the steering device including the actuator can be integrally incorporated in the suspension device 1, so as to make an operation for assembling the system to a vehicle body 5 efficient.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供一种悬挂装置，其能够进一步节省用于线控转向系统的空间，并且将用于将线控转向系统组装到车身的操作有效地提供。解决方案：转向轴12通过致动器围绕轴线旋转，并且凸缘部分16和轮毂17相对于围绕转向轴12的轴线的悬架组件23旋转以转向车轮19 因此，不需要转向杆，并且转向装置可以容纳在车轮19内，以便节省用于线控转向系统的空间。此外，包括致动器的转向装置可以整体地结合在悬架装置1中，从而使得将系统组装到车身5上的操作有效。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2008008471A Damping force adjustment type hydraulic shock absorber 审中-公开
标题翻译：阻尼力调节型液压减震器
公开(公告)号：JP2008008471A
公开(公告)日：2008-01-17
申请号：JP2006182281
申请日：2006-06-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATAYAMA YOHEI , UCHIYAMA MASAAKI
IPC分类号： F16F9/50 , F16F9/19
摘要： PROBLEM TO BE SOLVED: To prevent a response delay of damping force when a stroke direction of a piston rod is switched in a damping force type hydraulic shock absorber.
SOLUTION: When a piston rod 6 in the stroke of extension, a damping force is generated by controlling oil flow from a cylinder upper chamber 2A to a reservoir 4 with an extension side damping force adjustment mechanism 30. In this case, since the oil is made to flow without resistance from the reservoir 4 to a cylinder lower chamber 2B with an extension side check valve 62, when being switched to contraction stroke, the response delay is not generated because a pressure of the cylinder lower chamber 2B rises quickly. In the contraction stroke of the piston rod 6, the damping force is generated by controlling the stream of the oil from the cylinder lower chamber 2B to the reservoir 4 with a contraction side damping force adjustment mechanism 31. In this case, since the oil is made to flow from the reservoir 4 to the cylinder upper chamber 2A with a contraction side check valve 57, when being switched to the extension stroke, the response delay is not generated because a pressure of the cylinder upper chamber 2A rises quickly.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了防止在阻尼力型液压减震器中切换活塞杆的冲程方向时的阻尼力的响应延迟。解决方案：当活塞杆6在延伸行程中时，通过利用延伸侧阻尼力调节机构30控制从气缸上室2A到储液器4的油流而产生阻尼力。在这种情况下，由于在切换到收缩行程时，使油在没有电阻的情况下从储存器4流到具有延伸侧止回阀62的气缸下室2B，由于气缸下室2B的压力升高而不产生响应延迟。在活塞杆6的收缩行程中，通过利用收缩侧阻尼力调节机构31将油从气缸下室2B向储存器4进行控制而产生阻尼力。在这种情况下，由于油是在收缩侧止回阀57被切换到延伸行程时，使其从储存器4流到气缸上室2A，由于气缸上室2A的压力快速上升，不会产生响应延迟。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2007321863A Damping force adjustment type shock absorber and its manufacturing method 审中-公开
标题翻译：阻尼力调节式减震器及其制造方法
公开(公告)号：JP2007321863A
公开(公告)日：2007-12-13
申请号：JP2006152461
申请日：2006-05-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATAYAMA YOHEI , CHIKUMA HIROSHI , NAKATATE TAKAO , YAMAGUCHI HIROYUKI , HAYAMA HIROYUKI , MATSUMOTO HIROYUKI
IPC分类号： F16F9/50 , F16F9/32
摘要： PROBLEM TO BE SOLVED: To provide a damping force adjustment type shock absorber, wherein a lead wire to be connected to a motor driven actuator can be easily inserted through a piston rod.
SOLUTION: A piston 5 to which the piston rod 7 is connected is slidably connected into a cylinder 2 in which oil liquid is filled. Damping force is generated by elongation and contraction side damping valves 16, 17 and a coil 35 is energized via the lead wire 49 inserted through the piston rod 7 to adjust the damping force. A connector 39 to which a lead wire 44 of the coil 35 is connected is mounted on a solenoid assembly 6 on the side of the piston 5. The lead wire to the lower end of which a connector 51 is connected is inserted through a hollow portion 7A of the piston rod 7 to fix the connector 51 to the piston rod 7. With the connection of the piston rod 7 to the solenoid assembly 6, the connector 39 is connected to the connector 51.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种阻尼力调节型减震器，其中与马达驱动致动器连接的引线可以容易地通过活塞杆插入。解决方案：连接有活塞杆7的活塞5可滑动地连接到其中填充油液的气缸2中。通过伸长和收缩侧阻尼阀16,17产生阻尼力，并且通过插入通过活塞杆7的引线49对线圈35通电以调节阻尼力。线圈35的引线44连接到的连接器39安装在活塞5一侧的螺线管组件6上。连接到连接器51的连接器51下端的引线插入中空部分 7A的活塞杆7将连接器51固定在活塞杆7上。通过活塞杆7与螺线管组件6的连接，连接器39连接到连接器51.版权所有（C）2008 ，JPO＆INPIT

5. 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

6. 发明专利

JP2008089037A Damping force adjusting hydraulic shock absorber 审中-公开
标题翻译：阻尼力调节液压减震器
公开(公告)号：JP2008089037A
公开(公告)日：2008-04-17
申请号：JP2006269104
申请日：2006-09-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATAYAMA YOHEI
IPC分类号： F16F9/32 , F16F9/34 , F16F9/46
摘要： PROBLEM TO BE SOLVED: To simplify a structure in a damping force adjusting hydraulic shock absorber equipped with a pilot-type damping valve having a backpressure chamber at both extension side and compression side. SOLUTION: A piston 3 connected by a piston rod 7 is fitted in a cylinder 2 in which an oil liquid is sealed. In an extension stroke of the piston rod 7, an oil liquid at a cylinder upper chamber 2A side passes through an extension side oil passage 8, an extension side orifice 21A, a radial oil passage 20, an axial oil passage 19, a valve chamber 27, and a radial oil passage 30, opens an extension side check valve 31, and flows through a compression side oil passage 9 into a cylinder lower chamber 2B. In a compression stroke, an oil liquid at a cylinder lower chamber 2B side passes through a compression side oil passage 9, a compression side orifice 31A, the radial oil passage 30, a valve chamber 27, the axial oil passage 19, and a radial oil passage 20, opens a compression side check valve 21, passes through the extension side oil passage 8, and flows into the cylinder upper chamber 2A. Thus, the part of the oil liquid passage is used in common for the extension side and the compression side, simplifying the structure. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了简化具有在延伸侧和压缩侧具有背压室的先导式阻尼阀的阻尼力调节液压减震器的结构。解决方案：通过活塞杆7连接的活塞3装配在其中密封油液的气缸2中。在活塞杆7的延伸行程中，气缸上室2A侧的油液通过延伸侧油路8，延伸侧孔21A，径向油路20，轴向油路19，阀室 27和径向油路30打开延伸侧止回阀31，并且通过压缩侧油路9流入缸下室2B。在压缩行程中，气缸下室2B侧的油液通过压缩侧油路9，压缩侧孔31A，径向油路30，阀室27，轴向油路19以及径向油路20打开压缩侧止回阀21，通过延伸侧油路8流入气缸上部室2A。因此，油液通道的一部分用于延伸侧和压缩侧，简化了结构。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2007271065A Hydraulic shock absorber 审中-公开
标题翻译：液压减震器
公开(公告)号：JP2007271065A
公开(公告)日：2007-10-18
申请号：JP2006100808
申请日：2006-03-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATAYAMA YOHEI , HAYAMA HIROYUKI
IPC分类号： F16F9/348
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic shock absorber having simple construction with damping force property having different damping force changing rates depending on a piston speed region.
SOLUTION: First non-linear elastic bodies 22, 26 each having non-linear strain-stress property energize damping force valves 20, 24. Damping force valve guides 21, 25 are provided for slidably guiding the damping force valves 20, 24. The damping force valves 20, 24 are slid and elastically deformed with a pressure difference between cylinder upper and lower chambers 5, 6.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有结构简单的液压减震器，其阻尼力性能根据活塞速度区域具有不同的阻尼力变化率。解决方案：具有非线性应变应力特性的第一非线性弹性体22,26激励阻尼力阀20,24。阻尼力阀导向件21,25设置成可滑动地引导阻尼力阀20,24 阻尼力阀20,24以气缸上下腔5,6之间的压力差滑动弹性变形。（C）2008，JPO＆INPIT

8. 发明专利

JP2005163825A Damping force adjustable type shock absorber 审中-公开
标题翻译：阻尼力可调型防震吸收器
公开(公告)号：JP2005163825A
公开(公告)日：2005-06-23
申请号：JP2003400103
申请日：2003-11-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HAYAMA HIROYUKI , KATAYAMA YOHEI , NAKAMURA KENICHI , UCHIYAMA MASAAKI , YAMASHITA MIKIRO
IPC分类号： F16F9/53 , F16F9/48
摘要： PROBLEM TO BE SOLVED: To provide a damping force adjustable type shock absorber, using magnetic fluid, in which excessive increase of damping force is prevented when piston speed is set to be excessive.
SOLUTION: In a cylinder 2 in which magnetic fluid is enclosed, a piston member 3 connected to a piston rod 6 is engaged. On the piston member 3, a disc valve 11 is provided, and internal pressure of a pilot chamber 21 is added in a valve closing direction. By means of fixed orifices 25 and 29 and a pilot passage 34, pressure in cylinder upper and lower chambers 2a and 2b is introduced to the pilot chamber 21. With the magnetic field of a coil 15, flow resistance of magnetic fluid flowing in the pilot passage 34 is varied, so that pressure in the pilot chamber 21 is controlled to adjust valve opening pressure of the disc valve 11. As pressure in the pilot chamber 21 is excessively increased, a magnetism adjusting member 31 is moved by the pressure to contract a magnetic passage, so that strength of the magnetic field is lowered to lower the pressure in the pilot chamber 21.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种使用磁性流体的阻尼力可调式减震器，其中当活塞速度设定为过大时阻止力的过度增加。解决方案：在封闭有磁性流体的气缸2中，连接有活塞杆6的活塞构件3接合。在活塞构件3上设置有盘阀11，并且在关闭方向上添加有先导室21的内压。通过固定孔25和29以及先导通道34，气缸上部和下部腔室2a和2b中的压力被引入到先导室21中。在线圈15的磁场中，在导向件中流动的磁性流体的流动阻力通道34是变化的，从而控制先导室21中的压力以调节盘阀11的开阀压力。当先导室21中的压力过大时，磁调节件31被压力移动以收缩磁通，使得磁场的强度降低，以降低先导室21中的压力。版权所有（C）2005，JPO＆NCIPI

9. 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

10. 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

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