公开(公告)号：US20040134732A1

公开(公告)日：2004-07-15

申请号：US10627326

申请日：2003-07-25

Applicant: Stabilus GmbH

Inventor： Rolf Mintgen ,  Wilhelm Schwab ,  Paul Muders ,  Frank Born ,  Andre Stein

IPC: F16F009/00

CPC classification number: E05C17/305 ,  F16F9/064 ,  F16F9/464 ,  F16F2222/06

Abstract: A piston is guided in an axially displaceable manner sealed off from a closed cylinder via an annular seal radially surrounding it, and divides the cylinder interior into a working space near the piston rod and a working space away from the piston rod. The two working spaces are filled with a hydraulic fluid. The piston has a one-sided piston rod which extends through the working space near the piston rod and is guided in a sealed manner to the outside through an end closing wall of the cylinder. A first valve can be opened under high pressure to connect the working space away from the piston rod to the working space near the piston rod. A second valve can be opened under high pressure to connect the working space near the piston rod to the working space away from the piston rod. A volume-equalizing chamber for receiving the amount displaced from the working space away from the piston rod, which is greater than the amount displaced from the working space near the piston rod. The volume-equalizing chamber is arranged in the piston, and the working space away from the piston rod can be connected to the volume-equalizing chamber via the first valve and the working space near the piston rod can be connected to it via the second valve. The volume-equalizing chamber can be connected to the working space away from the piston rod via a first nonreturn valve and can be connected to the working space near the piston rod via a second nonreturn valve.

Abstract translation: 活塞以可轴向移动的方式引导，通过径向围绕其的环形密封件从封闭的圆柱体中密封，并将气缸内部分成活塞杆附近的工作空间和远离活塞杆的工作空间。 两个工作空间内装有液压油。 活塞具有延伸穿过活塞杆附近的工作空间的单向活塞杆，并通过气缸的封闭壁以密封的方式被引导到外部。 可以在高压下打开第一阀，以将工作空间从活塞杆远离活塞杆附近的工作空间。 第二个阀可以在高压下打开，将活塞杆附近的工作空间连接到远离活塞杆的工作空间。 用于接收从工作空间偏离活塞杆的量的体积均衡室，其大于从活塞杆附近的工作空间移动的量。 体积均衡室设置在活塞中，离开活塞杆的工作空间可以经由第一阀连接到体积均衡室，活塞杆附近的工作空间可以通过第二阀连接到活塞杆 。 容量均衡室可以经由第一止回阀连接到远离活塞杆的工作空间，并且可以经由第二止回阀连接到活塞杆附近的工作空间。

公开(公告)号：US20040178034A1

公开(公告)日：2004-09-16

申请号：US10734571

申请日：2003-12-12

Applicant: Stabilus GmbH

Inventor： Frank Born ,  Rolf Mintgen ,  Paul Muders ,  Wilhelm Schwab ,  Andre Stein

IPC: F16F009/34

CPC classification number: F16F9/512 ,  E05C17/305 ,  F16F9/067 ,  F16F9/516

Abstract: A piston/cylinder unit has a closed cylinder with a piston axially displaceably guided therein. The piston divides the cylinder interior into first and a second working spaces which are both filled with a fluid. A piston rod extends through the cylinder interior and is guided on its end side to the outside in a sealed manner through a closing wall of the cylinder. Furthermore, a first nonreturn valve is arranged in the piston having a closing element of which is force-loaded in the closing direction. At least a portion of the first nonreturn valve is exposed to pressure in the first working space. When an opening pressure in the first working space exceeds an opening pressure, the first nonreturn valve is opened connecting the first working space to the second working space. A second nonreturn valve is also arranged in the piston and also has a closing element of which is force-loaded in the closing direction. The second nonreturn valve is opened when pressure in the second working space exceeds an opening pressure for connecting the second working space to the first working space. The surface of the closing element of the first and/or second nonreturn valve acted upon by the pressure of the respective working spaces can be enlarged during the opening stroke of said nonreturn valve.

Abstract translation: 活塞/气缸单元具有封闭的气缸，其中活塞轴向可移动地被引导。 活塞将气缸内部分成第一和第二工作空间，两者都充满流体。 活塞杆延伸穿过气缸内部，并通过气缸的封闭壁以密封的方式在其端侧被引导到外部。 此外，第一止回阀设置在活塞中，其闭合元件在关闭方向上被加载。 第一止回阀的至少一部分在第一工作空间中暴露于压力。 当第一工作空间中的打开压力超过打开压力时，打开将第一工作空间连接到第二工作空间的第一止回阀。 第二止回阀也布置在活塞中，并且其闭合元件在关闭方向上被加载。 当第二工作空间中的压力超过将第二工作空间连接到第一工作空间的打开压力时，打开第二止回阀。 在所述止回阀的打开行程期间，由各个工作空间的压力作用的第一和/或第二止回阀的关闭元件的表面可以被扩大。