초록 ▼

A fluid-filled piston cylinder unit comprises a housing with a longitudinal axis and with an interior, a piston rod guided out from the housing in a sealing manner, which can be displaced along the longitudinal axis, as well as a piston connected to the piston rod, which divides the interior into a

A fluid-filled piston cylinder unit comprises a housing with a longitudinal axis and with an interior, a piston rod guided out from the housing in a sealing manner, which can be displaced along the longitudinal axis, as well as a piston connected to the piston rod, which divides the interior into a first sub-interior and a second sub-interior. The piston has a first fluid channel and a second fluid channel in each case for a fluid flow between the first sub-interior and the second sub-interior. The piston has a piston valve for closing the first fluid channel, whereby the piston valve in dependence of a fluid pressure opens the first fluid channel.

대표청구항 ▼

1. A fluid-filled piston cylinder unit comprising: a housing comprising a longitudinal axis and an interior;a piston rod leading out from the housing in a sealing manner, which can be displaced along the longitudinal axis;a piston connected to the piston rod, wherein the piston divides the interior

1. A fluid-filled piston cylinder unit comprising: a housing comprising a longitudinal axis and an interior;a piston rod leading out from the housing in a sealing manner, which can be displaced along the longitudinal axis;a piston connected to the piston rod, wherein the piston divides the interior into a first sub-interior and a second sub-interior, the piston having a first fluid channel and a second fluid channel for a fluid flow between the first sub-interior and the second sub-interior in each case, the piston having a piston valve for closing the first fluid channel, the piston valve opening the first fluid channel based on a fluid pressure, the piston having a sleeve element, the piston valve being provided within the sleeve element, the piston valve having a closing element, which is configured to be displaced along the longitudinal axis, and a spring element, which exerts a spring action on the closing element for closing the piston valve, the piston valve having an internal sealing element, against which the closing element rests for closing the piston valve, wherein an outer sealing element is provided for sealing the second fluid channel in dependence of a displacement direction of the piston rod, the outer sealing element being movable along the longitudinal axis with respect to the piston between a first position and a second position, the second fluid channel being sealed by the outer sealing element in the first position and the second fluid channel being open in the second position. 2. A fluid-filled piston cylinder unit in accordance with claim 1, wherein the first fluid channel is located within the sleeve element, the sleeve element comprising a sleeve element interior space, the piston comprising an inner sleeve, the inner sleeve being arranged in the sleeve element interior space, the inner sleeve comprising an inner sleeve interior space, at least a portion of the spring element being arranged in the inner sleeve element interior space. 3. A fluid-filled piston cylinder unit in accordance with claim 1, wherein the second fluid channel is located outside of the sleeve element. 4. A fluid-filled piston cylinder unit in accordance with claim 1, wherein the piston valve has a valve seat. 5. A fluid-filled piston cylinder unit in accordance with claim 4, wherein the spring action is oriented at least proportionately toward the valve seat. 6. A fluid-filled piston cylinder unit in accordance with claim 4, wherein the internal sealing element is arranged in the vicinity of the valve seat. 7. A fluid-filled piston cylinder unit in accordance with claim 4, wherein the closing element is uneven at the front side. 8. A fluid-filled piston cylinder unit in accordance with claim 4, wherein the closing element has a sealing layer for closing the piston valve. 9. A fluid-filled piston cylinder unit in accordance with claim 4, wherein the closing element is formed one of as cylinder piston and as spherical element. 10. A fluid-filled piston cylinder unit in accordance with claim 4, wherein the closing element has an integrated throttle channel with a flow cross-section. 11. A fluid-filled piston cylinder unit in accordance with claim 1, wherein the sleeve element on an end turned away from the piston rod has a collar. 12. A fluid-filled piston cylinder unit in accordance with claim 1, wherein the sleeve element on an end turned away from the piston rod has a collar, which is turned inward radially. 13. A fluid-filled piston cylinder unit in accordance with claim 1, wherein the sleeve element is detachably connected to the piston rod. 14. A fluid-filled piston cylinder unit in accordance with claim 1, wherein the sleeve element is screwed on a spigot of the piston rod. 15. A fluid-filled piston cylinder unit in accordance with claim 1, comprising a setting element for variably adjusting the fluid pressure for releasing the piston valve. 16. A fluid-filled piston cylinder unit comprising: a housing comprising a longitudinal axis and an interior;a piston rod leading out from the housing in a sealing manner, which can be displaced along the longitudinal axis;a piston connected to the piston rod, the piston dividing the interior into a first sub-interior and a second sub-interior, the piston having a first fluid channel and a second fluid channel for a fluid flow between the first sub-interior and the second sub-interior in each case, the piston having a piston valve for closing the first fluid channel, the piston valve opening the first fluid channel based on a fluid pressure, the piston valve having a closing element, the closing element having an integrated throttle channel, said integrated throttle channel comprising an axial section and at least one radial section, wherein said radial section can be sealed with the internal sealing element for permitting fluid flow through the integrated throttle channel. 17. A fluid-filled piston cylinder unit comprising: a housing comprising a longitudinal axis and an interior;a piston rod leading out from the housing in a sealing manner, the piston being displaceable along the longitudinal axis;a piston connected to the piston rod, wherein the piston divides the interior into a first sub-interior and a second sub-interior, the piston having a first fluid channel and a second fluid channel for a fluid flow between the first sub-interior and the second sub-interior in each case, the piston having a piston valve for closing the first fluid channel, the piston valve opening the first fluid channel based on a fluid pressure, the piston having a sleeve element, the piston valve being provided within the sleeve element, the piston valve having a closing element and a spring element, the closing element being configured to be displaced along the longitudinal axis, the spring element exerting a spring action on the closing element for closing the piston valve, the piston valve having an internal sealing element, against which the closing element rests for closing the piston valve, wherein an outer sealing element is provided for sealing the second fluid channel based on a displacement direction of the piston rod, the outer sealing element being located along the second fluid channel between a first radial web and a second radial web of the piston spaced at a distance along the longitudinal axis, wherein the outer sealing element is laid on the second radial web in a sealing manner for sealing the second fluid channel.