Roller blinds controller structure
AssigneeUni-Soleil Ent. Co., Ltd.
InventorYu-Ting Kao
Life of this patent
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Abstract
An improvement of roller blinds controller is provided, it mainly comprises a cylindrical rod passing through a side cover and fixing therewith; a bead chain sprocket and a number of torsion springs fitted on the cylindrical rod, and an outer sleeve cover fitted on the outside, wherein: the cylindrical rod has a ridge portion protruded from the circumferential surface thereof, while the side cover has a has a central aperture with a annular edge portion, the cylindrical rod can be fixed with the side cover by the snap-fitting of the annular edge portion between the flange portion and the ridge portion.
Claims2
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.
Dependencies are inferred from the claim text.