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1. 发明授权

US5921166A Cylinder apparatus 失效
标题翻译：气缸装置
公开(公告)号：US5921166A
公开(公告)日：1999-07-13
申请号：US845414
申请日：1997-04-25
申请人： Hiromi Machida , Tetsuo Katoh , Yasuo Inose , Hiroshi Murata
发明人： Hiromi Machida , Tetsuo Katoh , Yasuo Inose , Hiroshi Murata
IPC分类号： F15B15/08 , F16J15/18 , F16J15/32
CPC分类号： F15B15/08 , Y10S277/928
摘要： A cylinder apparatus including a piston slidably fitted in a cylinder having a hydraulic fluid sealed therein. A piston rod is connected at one end thereof to the piston. The other end portion of the piston rod extends as far as the outside of the cylinder through a seal block fitted to an open end portion of the cylinder. The seal block retains a double seal including a rod seal that is in sliding contact with the piston rod and an O-ring that resiliently biases the rod seal toward the piston rod. The seal block is provided with a projection extending between the O-ring and the rod seal to bear a part of biasing force applied to the rod seal from the O-ring. The projection is provided at a side of the O-ring and rod seal which is remote from the piston.
摘要翻译：一种气缸装置，包括可滑动地装配在其中密封有液压流体的气缸中的活塞。活塞杆的一端与活塞连接。活塞杆的另一端部通过装配到气缸的开口端部的密封块而延伸到气缸的外部。密封块保持双重密封，其包括与活塞杆滑动接触的杆密封件和将杆密封件朝向活塞杆弹性偏压的O形环。密封块设置有在O形环和杆状密封件之间延伸的突起，以承受从O形环施加到杆密封件的一部分偏压力。突出部设置在远离活塞的O形环和杆密封件的一侧。

2. 发明授权

US06173960B1 Rod seal apparatus for cylinder assembly 失效
标题翻译：用于气缸组装的杆密封装置
公开(公告)号：US06173960B1
公开(公告)日：2001-01-16
申请号：US09321094
申请日：1999-05-27
申请人： Yasuo Inose , Hiromi Machida
发明人： Yasuo Inose , Hiromi Machida
IPC分类号： F16J1544
CPC分类号： F16J15/3208 , F16J15/164
摘要： There is provided a seal apparatus for sealing against a rod, comprising a double seal including a rod seal and an O-ring which serves as a back-up ring for the rod seal. The double seal is provided in an annular groove formed on an inner circumferential surface of a rod guide which guides a sliding motion of the rod. An annular partition wall extends from the rod guide so that a force applied to the rod seal from the O-ring is shared between the rod seal and the partition wall. An annular protrusion is formed on a front end surface of the partition wall, so that when the rod seal is pressed with a large force toward the low-pressure side, the protrusion bites into a stepped surface of the rod seal and a front end surface of the rod seal is brought into contact with a low-pressure-side seal-bearing surface of the rod guide. The force applied to the rod seal is distributed to two sites. This provides an ideal contact surface pressure distribution with respect to a surface of contact between the rod seal and the rod, without being affected by a dimensional error and a difference in thermal expansion.
摘要翻译：提供了用于密封杆的密封装置，其包括双重密封，其包括杆密封件和作为用于杆密封的支撑环的O形环。双重密封件设置在形成在杆引导件的内周面上的环形槽中，该引导件引导杆的滑动运动。环形分隔壁从杆导向件延伸出来，从而在杆密封件和分隔壁之间共享从O形环施加到杆密封件上的力。在分隔壁的前端面上形成有环状的突出部，当杆状密封件以较大的力向低压侧被按压时，突出部咬入到杆状密封件的台阶面上，前端面的杆密封件与杆导向件的低压侧密封承载表面接触。施加到杆密封件的力分布到两个位置。这提供了相对于杆密封件和杆之间的接触表面的理想的接触表面压力分布，而不受尺寸误差和热膨胀差的影响。

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