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Winding device for a roller shade with a self-locking function to prevent the roller shade from incurring detachment during reverse rotation
The device comprises a side bracket 1, a self-locking unit 2 and a return wheel module 3. The self-locking unit and return wheel module are mounted within a receiving space of the side bracket. The self-locking unit comprises at least one support member 21 and at least one stop member 22. The return wheel module comprises a return wheel 31, a winder wheel 32 and a volute spiral blade spring 33 arranged between the return and winder wheel. The volute spiral blade spring is wound around the return wheel and has a distal end 331 connected to the winder wheel in a different direction to form a connection and the spring blade is provided with a locking portion 332 that is located at the distal end and is moveable to lock the stop member. The device may have a plurality of return wheels, a plurality of winder wheels and a plurality of volute spiral blade springs.
Winding device for a roller shade with a self-locking function to prevent the roller shade from incurring detachment during reverse rotation
The device comprises a side bracket 1, a self-locking unit 2 and a return wheel module 3. The self-locking unit and return wheel module are mounted within a receiving space of the side bracket. The self-locking unit comprises at least one support member 21 and at least one stop member 22. The return wheel module comprises a return wheel 31, a winder wheel 32 and a volute spiral blade spring 33 arranged between the return and winder wheel. The volute spiral blade spring is wound around the return wheel and has a distal end 331 connected to the winder wheel in a different direction to form a connection and the spring blade is provided with a locking portion 332 that is located at the distal end and is moveable to lock the stop member. The device may have a plurality of return wheels, a plurality of winder wheels and a plurality of volute spiral blade springs.
Winding device for a roller shade with a self-locking function to prevent the roller shade from incurring detachment during reverse rotation
JU-HAI CHEN (author)
2018-05-09
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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