Vibration Damper with Stroke-Dependent Damping Force

A vibration damper with stroke-dependent damping force comprising:

• a cylinder in which a piston rod with a piston is guided so as to be axially movable, the piston dividing the cylinder into two work spaces filled with a damping medium;
• a bypass arranged between the two work spaces that is opened or closed depending on a position of the piston in the cylinder;
• and
• a damping valve in the piston for at least one through-flow direction, the damping valve formed by at least one valve body that at least partially covers the through-flow channel in the damping valve, the at least one valve body has a first pressure-actuated surface and a second pressure-actuated surface, the two pressure-actuated surfaces are constructed on opposite cover sides of the at least one valve body, the first pressure-actuated surface exerts a lifting force and the second pressure-actuated surface exerts a closing force on the valve disk,
• wherein an action of the second pressure-actuated surface depends on the position of the piston in relation to the bypass, and
• wherein the first pressure-actuated surface is larger than the second pressure-actuated surface that is connected to a control space, which is likewise filled with the damping medium, and to a connection channel that overlaps with the bypass depending on the stroke position of the piston.