Pressure-regulating device and suspension apparatus

摘要

A pressure-regulating device, in particular for a vehicle suspension apparatus having two hydraulic cylinders, comprises a cylinder member with a bottom, a lid member for closing the opening of the cylinder member. Said lid member has an integrally formed cylinder slidingly receiving a smaller diameter portion of a free piston and defining with the lid member a smaller side hydraulic chamber. The free piston has a large-diameter portion slidingly received within said cylinder member and defining with said lid member a large side hydraulic chamber and with said bottom of said cylinder member another chamber. The hydraulic chambers communicating with respective hydraulic passages, in particular being connectable to said hydraulic cylinders of the vehicle suspension apparatus. A constriction member is provided for damping when a pressure differential develops between these hydraulic chambers. Said hydraulic passages are provided in said lid member.