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A platform for research: civil engineering, architecture and urbanism
CURTAIN CORD RETRACTING AND RELEASING DEVICE AND TRANSMISSION MECHANISM THEREOF
A curtain cord retracting and releasing device includes a reel for winding a cord, a power mechanism, and a transmission mechanism for transmission between the power mechanism and the reel to drive the reel to rotate to retract or release the cord. The transmission mechanism includes two meshed external gears with the same structure. A center distance of the external gears is a fixed value, and one external gear is connected to an output shaft of the power mechanism and the other is connected to the reel. The external gears are non-circular gears with a radius of curvature of a pitch line gradually increasing. A gear tooth corresponding to a node with a smallest radius of curvature on the pitch line and a gear tooth corresponding to a node with a largest radius of curvature on the pitch line are transitioned by a curved surface.
CURTAIN CORD RETRACTING AND RELEASING DEVICE AND TRANSMISSION MECHANISM THEREOF
A curtain cord retracting and releasing device includes a reel for winding a cord, a power mechanism, and a transmission mechanism for transmission between the power mechanism and the reel to drive the reel to rotate to retract or release the cord. The transmission mechanism includes two meshed external gears with the same structure. A center distance of the external gears is a fixed value, and one external gear is connected to an output shaft of the power mechanism and the other is connected to the reel. The external gears are non-circular gears with a radius of curvature of a pitch line gradually increasing. A gear tooth corresponding to a node with a smallest radius of curvature on the pitch line and a gear tooth corresponding to a node with a largest radius of curvature on the pitch line are transitioned by a curved surface.
CURTAIN CORD RETRACTING AND RELEASING DEVICE AND TRANSMISSION MECHANISM THEREOF
LEI ZHENBANG (author) / LEI XINGBANG (author)
2022-04-21
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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