Hydraulic control unit, in particular for operating a folding roof of a vehicle

A folding roof assembly for a vehicle, in which the folding roof assembly comprises a folding roof which is movable between a closed position, in which the folding roof covers a passenger space of the vehicle, and an open position, in which said passenger space is not covered, and in which the folding roof assembly further comprises a hydraulic control unit for moving the folding roof, which folding roof comprises a folding covering and a collapsible framework for the covering, which framework comprises a main bow which is movable by the control unit between a swung-up and swung-down position, and a rear bow for moving a rear part of the folding roof, which rear bow is movable by the control unit between a swung-up and swung-down position, the control unit having a reservoir for hydraulic fluid and a pump connected to the reservoir and provided with a delivery port for delivering compressed hydraulic fluid, and also a hydraulic main bow actuator for swinging the main bow up and down, and a hydraulic rear bow actuator for swinging the rear bow up and down, the main bow actuator and rear bow actuator both being of the double-acting type, each with a first and a second variable working chamber, said working chambers being separated by a piston of the corresponding hydraulic actuator, the control unit further comprising a control valve assembly with a first exit port and a second exit port, which are respectively connected to the first and the second connection of the main bow actuator for controlling the movements of the main bow actuator, which control valve assembly comprises one or more operable control valves and is designed for selective connection of one of the two or both exit ports thereof to the delivery port of the pump or the reservoir, wherein a hydraulic AND valve is provided, having a first and a second entry port and an exit port, the entry ports of the AND valve being connected respectively to the first and the second exit port of the control valve assembly of the main bow actuator, and the exit port of the AND valve being connected to the first connection of the rear bow actuator, an operable control valve belonging to the second connection of the rear bow actuator is provided.