| 摘要 |
The piston/cylinder unit has at least one dynamic-pressure nozzle (11) intended for the reversal of the pressurising in the end position of the piston and attached externally to the cylinder. By means of the dynamic-pressure nozzle (11), the consumption of control medium is substantially reduced, yet high operating reliability is guaranteed, because the control medium is already in the flowing state at the moment of reversal. The dynamic-pressure nozzle (11) contains a connection opening (14) for an uninterrupted flow of control medium, an orifice (17), a connection opening (15), connected to the orifice, for the control or return flow, and at least one closure piece (61) for closing the orifice, which closure piece (61) is arranged at one end at the piston rod. In addition, the dynamic-pressure nozzle (11) has a sealing element (37) which can be actuated by the closure piece (61) and is allocated to a connecting opening (34) between pressure-connection opening (14) and orifice (17) or control-connection opening (15). Directly after the sealing element (37) has cleared the connecting opening under the action of the closure piece (61), the closure piece (61) closes the orifice. <IMAGE> |
