Rollo assembly

A rollo assembly is provided, comprising a rollo (1) and a stationary mounting assembly (2a,2b) therefore. The rollo comprises a rotatable winding tube (3) for a rollo screen mounted for rotation in the stationary mounting assembly and a spring (4) for loading said winding tube in a direction for winding the rollo screen onto the winding tube. A first end of said spring is connected to the winding tube and a second end is connected to a mounting part (6) positioned within the winding tube and connected to the stationary mounting assembly. Said mounting part comprises projecting locking elements (10,11) for cooperation with corresponding locking members of the mounting assembly and for a rotation relative thereto between a first rotational position in which the mounting part can be inserted in or removed from the mounting assembly, and a second rotational position in which the locking elements and locking members prevent any translational movement of the rollo relative to the stationary mounting assembly. Said spring loads the mounting part towards the second rotational position.