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1. 发明专利

JP2009108982A Hydraulic shock absorber and its assembling method 有权
标题翻译：液压减震器及其组装方法
公开(公告)号：JP2009108982A
公开(公告)日：2009-05-21
申请号：JP2007284509
申请日：2007-10-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAZAKI TATSU , MAEDA ATSUSHI
IPC分类号： F16F9/43 , F16F9/50
CPC分类号： F16F9/43 , F16F9/092 , Y10T29/49863
摘要： PROBLEM TO BE SOLVED: To eliminate the use of a gas filling hole for sealing gas inside a gas chamber in a hydraulic shock absorber. SOLUTION: An outer shell 2 which houses parts inside the hydraulic shock absorber such as a cylinder, a piston, a piston rod or the like is coupled to a joint 56 of an assembling device 54 to make the gas pressure chamber 55 and an interior portion of the outer shell 2 communicate with each other. A low-pressure gas is supplied to the gas pressure chamber 55 and the interior portions of the outer shell 2. Under the pressure of the low-pressure gas, an oil tank subassembly S is inserted and press-fitted into the outer shell 2 to form an oil tank 10 and the oil chamber 13 and the gas chamber 14 are defined with a diaphragm 12. As a result, the low-pressure gas can be sealed into the gas chamber 14, thus eliminating the use of the gas filling hole for filling the gas into the gas chamber 14. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：消除使用用于密封液压缓冲器中的气室内的气体的气体填充孔。解决方案：将诸如气缸，活塞，活塞杆等的液压缓冲器内的部件的外壳2联接到组装装置54的接头56，以使气体压力室55和外壳2的内部彼此连通。向气体压力室55和外壳2的内部供给低压气体。在低压气体的压力下，将油箱分组件S插入并压入外壳2〜形成油箱10，并且油室13和气室14由隔膜12限定。结果，可以将低压气体密封到气室14中，从而消除了气体填充孔的使用将气体填充到气室14.版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2008082481A Cylinder device 有权
标题翻译：气缸装置
公开(公告)号：JP2008082481A
公开(公告)日：2008-04-10
申请号：JP2006264699
申请日：2006-09-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAZAKI TATSU
IPC分类号： F16F9/36
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic shock absorber (a cylinder device) for smoothly exhausting air intruding inside a bump cap with an easy structure, since the air in the bump cap easily remains, when dust is mixed in without sufficiently exhausting the air.
SOLUTION: A through-hole 14Ad penetrating through a cylinder part 14Aa is arranged on a side surface of the cylinder part 14Aa of the bump cap 14A, by forming a claw-shaped engaging part 14Ae by bending a part upward on the lower end side toward the inside from the outside in a predetermined range. The engaging part 14Ae forms a clearance chamber 16A surrounded by an under surface of a cover part 14Ab, an inner peripheral surface of the cylinder part 14Aa, an upper surface of an outer cylinder 3 and an outer peripheral surface of a piston rod 4, by abutting on an upper end part of the outer cylinder 3, and the clearance chamber 16A communicates with the through-hole 14Ad. Thus, the air intruding inside the bump cap 14 is smoothly exhausted outside from the through-hole 14Ad, and the dust is hardly deposited, and a seal 6 and the piston rod 4 can be prevented from being damaged.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种液体缓冲器（气缸装置），用于以容易的结构平滑地排出侵入凸块盖内的空气，由于凸起帽中的空气容易残留，当灰尘没有充分混合时耗尽空气解决方案：通过圆柱部分14Aa的通孔14Ad布置在凸块盖14A的圆筒部分14Aa的侧表面上，通过在下部弯曲部分向上弯曲部分形成爪形接合部分14Ae 端部从外部朝向内侧预定范围。接合部分14Ae形成由盖部分14Ab的下表面，气缸部分14Aa的内周表面，外筒3的上表面和活塞杆4的外周表面围绕的间隙室16A，通过邻接在外筒3的上端部，间隙室16A与通孔14Ad连通。因此，侵入凸起盖14内的空气从通孔14Ad的外部平滑地排出，并且灰尘几乎不会沉积，并且能够防止密封件6和活塞杆4的损坏。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2009204095A Cylinder device 审中-公开
标题翻译：气缸装置
公开(公告)号：JP2009204095A
公开(公告)日：2009-09-10
申请号：JP2008047779
申请日：2008-02-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAZAKI TATSU , AMAMIYA AKIKIMI
IPC分类号： F16F9/38 , F16F9/32
摘要： PROBLEM TO BE SOLVED: To provide a cylinder device for preventing the accumulation of dust and water on a head cap.
SOLUTION: A plurality of dust discharge grooves 16 are formed on the inside face of a dust cover 10 while extending over an insertion portion 11, a fitting portion 12 and a protection portion 13. So, the dust discharge grooves 16 can discharge dust and water from a cover portion 7 of the head cap 5 to the lower side. This prevents troubles including rust development on the cover portion 7 of the head cap 5 due to the accumulation of dust and water.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于防止灰尘和水在头盖上积聚的气缸装置。解决方案：在防尘罩10的内表面上形成多个排放槽16，同时在插入部分11，装配部分12和保护部分13上延伸。因此，灰尘排出槽16可以排出灰尘和水从头盖5的盖部分7到下侧。这样可以防止由于灰尘和水的积聚引起的头盖5的盖部7上的锈蚀的发生。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

JP2007057088A Cylinder device 审中-公开
标题翻译：气缸装置
公开(公告)号：JP2007057088A
公开(公告)日：2007-03-08
申请号：JP2005347861
申请日：2005-12-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAZAKI TATSU , KONO TAKASHI , KAGAWA SHINICHI
IPC分类号： F16F9/32 , B60G13/08 , F16F9/19
摘要： PROBLEM TO BE SOLVED: To prevent interference of an upper end of a cylinder part with a bumper cap without applying treatment such as a diameter reduction or chamfering in a hydraulic buffer. SOLUTION: A plurality of ribs 23 which are interferences during press-fitting to the outer periphery of an end of the cylinder part are provided on the inner peripheral face of the cylindrical part 22 of the synthetic resin-made bumper cap 19. A plurality of grooves 25 extending radially toward the ribs 23 are formed on a bottom part 20 of the bumper cap 19 contacting the cylinder part. When the bumper cap 19 is press-fitted into the cylinder part, the ribs 23 are compressed as interference and the bumper cap 19 is fixed to the cylinder part. At this time, because a gap is formed between the cylinder part and the cylindrical part 22, and a gap is formed between the ribs 23 and the bottom part 20 by the grooves 25, interference of the upper end of the cylinder part with round parts R1, R2 on the inner peripheral face of the bumper cap 19 can be prevented. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了防止气缸部件的上端与保险杠盖的干涉，而不需要在液压缓冲器中进行诸如直径减小或倒角的处理。解决方案：在合成树脂制的保险杠帽19的圆筒部22的内周面上设置有多个肋23，其在压配合到筒部的端部的外周处的干涉。在保险杠盖19的与缸部相接触的底部20上形成有朝向肋23径向延伸的多个槽25。当保险杠盖19压配合到缸体中时，肋23被压缩为干涉，并且保险杠帽19固定到缸部。此时，由于在圆筒部和圆筒部22之间形成间隙，并且通过槽25在肋23和底部20之间形成间隙，因此气缸部的上端与圆形部的干涉可以防止保险杠盖19的内周面上的R1，R2。版权所有（C）2007，JPO＆INPIT

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