Drapery Rod Ring Stabilizer Design to Reduce Noise and Binding
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Solution Overview
Problem
Rotating drapery rod systems experience noise and binding issues due to rattling rings and potential canting, which can stop the operation, tear the shade material, or wear components, and there is a need for a system that provides smooth, quiet, and affordable operation with reduced friction and a minimum number of parts.
Innovation Solution
A drapery rod system with a cylindrical drive element featuring helical grooves and stabilizers on the rings to guide and stabilize them, preventing canting and binding, and allowing for manual or motorized operation with any shade material, while reducing light gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If rings are positioned around the rotating drive element to move shade material, then the drapery system can operate with a simple structure, but noise is created as the rings rattle against the guide structure
Solution Approach 1:
A stabilizer member is introduced as an intermediary component between the ring and the drive element. This stabilizer fits snugly against the drive element's surface, preventing the ring from rattling and contacting the guide structure, thereby eliminating noise while maintaining the simple overall system structure
Solution Approach 2:
The stabilizer member is positioned in advance on the drive element to prevent harmful contact between the ring and guide structure. By pre-establishing this protective interface, the design prevents noise generation before it can occur during operation
2Device complexity
If rings rotate on the drive element to move shade material, then the system can operate with fewer components, but the rings may angle or cant causing binding that stops operation
Solution Approach 1:
The stabilizer member acts as a mediator that maintains proper ring orientation relative to the drive element. By providing a stable reference surface, it prevents the ring from canting or angling, ensuring continuous reliable operation without binding
Solution Approach 2:
The stabilizer is pre-positioned on the drive element to establish correct ring alignment before operation begins. This preliminary positioning ensures the ring maintains proper orientation throughout operation, preventing binding and ensuring operational reliability
3Ease of operation
If rings travel across the rotating drive element, then the drapery can open and close, but friction between rings and drive element creates resistance and wear
Solution Approach 1:
The stabilizer member changes the friction parameters by providing a different contact interface between the ring and drive element. This modification reduces the coefficient of friction, thereby reducing resistance and energy loss during drapery operation
Data Source
AI summary
A drapery system having a drive element extending the length that is connected to a structure by a pair of brackets. The drive element has a cylindrical shape with an exterior surface. The exterior surface of the drive element has a guide structure, which in one arrangement is a plurality of helical grooves. A plurality of rings are positioned around the drive element that are used to connect shade material to the drive element. The rings include a partial driver ring, a full driver ring and idler rings. In a center closing arrangement, partial driver rings are positioned as the inward most rings followed by full driver ring which is followed by a plurality of idler rings. The partial driver ring and the idler rings have a stabilizer that fits around the exterior surface of the drive element thereby providing smoother and quieter travel along the drive element.