Patent ID: 9587428
Date: 2017-03-07
CPC Classifications: E06B

Claim:
1. A window blind device comprising: a headrail extending in a longitudinal direction; a bottomrail disposed to be movable relative to said headrail in an upright direction between an uppermost position and a lowermost position; a window shade having an upper end connected to said headrail, and a lower end connected to said bottomrail so as to be moved therewith; a frame disposed on one of said headrail and said bottomrail, and having two frame halves which are brought into mating engagement with each other, each of said frame halves including a wall body having inner and outer major surfaces, and a plurality of shaft halves disposed on said inner major surface to cooperatively define a central line in the longitudinal direction, each of said shaft halves including a stem segment extending from said inner major surface in a direction transverse to the longitudinal direction, and a connecting segment which extends from said stem segment in the transverse direction and which has at least one of male and female connecting regions, said connecting segments of said shaft halves being symmetrically arranged such that when said frame halves are brought into mating engagement with each other, said shaft halves of said frame halves form a plurality of supporting shafts; first and second control wheels which are rotatably mounted on two adjacent ones of said supporting shafts, respectively, and which are coupled to each other; and first and second cord spools which are rotatably mounted on two of remaining ones of said supporting shafts, respectively so as to couple said first and second control wheels to the other one of said headrail and said bottomrail such that said bottomrail is permitted to be displaced between the uppermost and lowermost positions.