Abstract: In order to facilitate mounting of a roller blind one end of the roller blind tube is fitted with a spring-loaded insert (M). To prevent this from being pushed back a grub screw may be used, but it requires tools and precise alignment. According to the invention a releasable pawl-and-ratchet structure (2, 4) is provided in the end plug (1). The release is obtained by rotating the holder (5) of the pawls (2), whereby they are directed into axial grooves (3 or 3?).

Abstract: In order to facilitate mounting of a roller blind one end of the roller blind tube is fitted with a spring-loaded insert (M). To prevent this from being pushed back a grub screw may be used, but it requires tools and precise alignment. According to the invention a releasable pawl-and-ratchet structure (2, 4) is provided in the end plug (1). The release is obtained by rotating the holder (5) of the pawls (2), whereby they are directed into axial grooves (3 or 3?).

Abstract: A roller for a roller blind in the shape of a tube (T) comprising a mechanism known per se is braked by means of friction, in that a compression spring (7) is compressed when the blind is pulled down and establishes a force between a collar (6) on the non-rotating rod (2) of the roller blind, and a nut (8) which is rotated by the tube. The nut has a shoulder (8a) which cooperates with a corresponding shoulder (14) at the end of the non-rotating rod. An alternative spring force is obtained by means of a piston in an air cylinder in which a calibrated exhaust opening for the air reduces the braking action when rotation is slow.