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A platform for research: civil engineering, architecture and urbanism
FOLDING/UNFOLDING DEVICE FOR A WINDOW SHADE
A folding/unfolding device drives a reel shaft to rotate to thereby fold or unfold a shade of a window shade through a string. The folding/unfolding device includes a folding/unfolding unit is mounted to a top frame or a bottom frame of the shade and includes a screw rod on which a first gear is mounted. A second gear is mounted on the reel shaft and directly or indirectly meshes with the first gear. A single direction driving unit is mounted around and movable along the screw rod. When the single direction driving unit moves along the screw rod and towards the first gear, the screw rod is driven to rotate the reel shaft through the first and second gears. When the single direction driving unit moves along the screw rod and away from the first gear, the screw rod is not rotated.
FOLDING/UNFOLDING DEVICE FOR A WINDOW SHADE
A folding/unfolding device drives a reel shaft to rotate to thereby fold or unfold a shade of a window shade through a string. The folding/unfolding device includes a folding/unfolding unit is mounted to a top frame or a bottom frame of the shade and includes a screw rod on which a first gear is mounted. A second gear is mounted on the reel shaft and directly or indirectly meshes with the first gear. A single direction driving unit is mounted around and movable along the screw rod. When the single direction driving unit moves along the screw rod and towards the first gear, the screw rod is driven to rotate the reel shaft through the first and second gears. When the single direction driving unit moves along the screw rod and away from the first gear, the screw rod is not rotated.
FOLDING/UNFOLDING DEVICE FOR A WINDOW SHADE
HONG WEI-SHUN (author)
2022-05-12
Patent
Electronic Resource
English
IPC:
E06B
Feste oder bewegliche Abschlüsse für Öffnungen in Bauwerken, Fahrzeugen, Zäunen oder ähnlichen Einfriedungen allgemein, z.B. Türen, Fenster, Läden, Tore
,
FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES, OR LIKE ENCLOSURES, IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
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