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A platform for research: civil engineering, architecture and urbanism
ROLLER BLIND THAT FREELY OPENS/CLOSES UP AND DOWN
A roller blind that freely opens and closes up and down, which comprises a roller shaft, a drawing cord and a drawing device. An end part of the roller shaft is provided with a movable pulley (1), and the drawing cord comprises a lifting section (31) and a pull-down section (32) which are drawn by the drawing device to move synchronously; the lifting section (31) and the pull-down section (32) bypass the movable pulley (1) and then tension upward and downward respectively so as to keep the movable pulley (1) stable, such that the movable pulley (1) may rotate while lifting, thus achieving the free up and down opening and closing of the roller blind.
ROLLER BLIND THAT FREELY OPENS/CLOSES UP AND DOWN
A roller blind that freely opens and closes up and down, which comprises a roller shaft, a drawing cord and a drawing device. An end part of the roller shaft is provided with a movable pulley (1), and the drawing cord comprises a lifting section (31) and a pull-down section (32) which are drawn by the drawing device to move synchronously; the lifting section (31) and the pull-down section (32) bypass the movable pulley (1) and then tension upward and downward respectively so as to keep the movable pulley (1) stable, such that the movable pulley (1) may rotate while lifting, thus achieving the free up and down opening and closing of the roller blind.
ROLLER BLIND THAT FREELY OPENS/CLOSES UP AND DOWN
FREI NACH OBEN UND UNTEN ÖFFNENDER/SCHLIESSENDER ROLLLADEN
STORE ROULANT QUI S'OUVRE ET SE FERME LIBREMENT
ZHANG JIWEN (author)
2024-04-24
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
Storage box with lock that opens and closes automatically
| European Patent Office | 2024