Patent ID: 8997829
Filing Date: 2015-04-07
Classification: E06B

Abstract:
1. An improvement of roller blinds controller, said roller blinds controller is mainly formed by a cylindrical rod having a first end and a second end, said second end of said cylindrical rod passing through the central aperture of a side cover and fixing therewith, a bead chain sprocket meshing with a bead chain and fitted on the cylindrical rod, and a number of torsion springs located between the cylindrical rod and the bead chain sprocket, and an outer sleeve cover fitted on the outside, said cylindrical rod, comprising: a flange portion integrally formed on said first end of the cylindrical rod, said cylindrical rod having a ridge portion protruding from the circumferential surface of the first end thereof, said side cover having a recessed portion corresponding to said flange portion of said cylindrical rod; and an annular edge portion of the central aperture formed at the inner side of said recessed portion being snap-fitted to matingly engage said flange portion of said cylindrical rod and said ridge portion.