| 主权项 |
1. Damping unit comprising:
a cylinder which is filled with a damping fluid and in which a piston rod is guided in an axial direction of the cylinder so as to be able to be inserted and withdrawn, the piston rod being associated with a bottom surface which extends between the piston rod and an inside wall of the cylinder and has at least one axial through-hole which defines an effective flow cross section for the damping fluid;
wherein the piston rod comprises, at the front end thereof in the insertion direction into the cylinder:
a stop which is fixed on the piston rod in the axial direction and defines a front face in the insertion direction of the piston rod;a piston bottom element which is supported on the piston rod so as to be axially slidable and comprises the bottom surface;a resilient element which prestresses the piston bottom element relative to the piston rod in such a way that, in an idle state of the piston rod, the bottom surface of the piston bottom element and the front face of the stop are spaced apart from each other by means of the effect of the resilient element; andthe resilient element being designed such that, above a predefined insertion speed of the piston rod into the cylinder, the dynamic pressure of the damping fluid causes the bottom surface of the piston bottom element to come into contact with the front face of the stop against the effect of the resilient element, and the effective flow cross section for the damping fluid being reduced due to the interaction of the front face of the stop and the at least one axial through-hole in the bottom surface of the piston bottom element. |
