Door stop device

摘要

A door stop device for a motor-vehicle door contains, as is known, a piston/cylinder unit (1) which is fixed on the one hand to a door-side mounting and on the other hand to a mounting located on the door-frame side, its piston (15) limiting at least one working chamber (17). Connected to the working chamber is an external fluid conduit (20), in which an activatable shut-off member (21) is located. The one-sided piston rod which, in a known device, is provided with an additional inner valve necessitates unequal displacement volumes during shifts of the piston and therefore the closed fluid system has to be filled with a sufficient proportion of a compressible working fluid. In the new door stop device, in every possible piston position, the at least one working chamber in the cylinder (7) of the piston/cylinder unit, together with the connected fluid conduit (20), is filled with an incompressible fluid completely free of fractions of compressible fluid. This allows an essentially rigid stopping of the door against further opening or closing in any desired door position in a manner free of any elastic hysteresis. Use, for example, for motor-vehicle doors.