Crossover Bracket for Drapery Rod Driver Ring Alignment

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Solution Overview

Problem

Existing rotating rod drapery systems face issues with driver ring alignment, increased friction leading to hang-ups, and the inability to achieve seamless overlap of drapes, resulting in aesthetic and operational problems such as light gaps and potential catastrophic events.

Innovation Solution

A rotating rod drapery system with a pair of driver rings connected by a crossover bracket maintains perpendicular alignment, allowing for smoother operation, overlap of drapes, and reduced friction, while enabling the inner edge of the drapery panel to be extended past the inwardmost ring without tilting, thus preventing hang-ups and eliminating light gaps.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a single driver ring is positioned as the inward most or second inward most ring, then the rotating rod can open and close the drapery, but the driver ring tilts out of perpendicular alignment with the rotating rod, increasing friction and causing hang-ups

Engineering Contradiction:

Improvedrapery opening and closingVSAvoiddriver ring alignment stability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The single driver ring is divided into two separate driver rings positioned at different locations on the rotating rod. This segmentation allows each ring to independently engage with the helical grooves without tilting, as they are distributed along the rod's length rather than concentrated at one position.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The driver rings are positioned at different axial locations along the rotating rod, adding a dimensional distribution aspect. This spatial distribution prevents the tilting problem by ensuring that the driver rings remain perpendicular to the rod axis throughout operation.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Manufacturing precision

If tighter tolerances are controlled between the teeth of the driver ring, then the driver ring is prevented from tilting on the rotating rod, but the teeth are more likely to get hung-up or catch on aberrations in the surface or groove

Engineering Contradiction:

Improvedriver ring tooth alignmentVSAvoidoperation smoothness

Core Design Contradiction:

Manufacturing precisionVSReliability

Solution Approach 1:

By using multiple driver rings instead of one, the system distributes the engagement points along the rod. This allows for slightly looser tolerances on each individual ring while maintaining overall system precision, reducing the risk of teeth catching on surface aberrations.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system incorporates tolerance compensation through the multi-ring design, where slight variations in tooth-groove fitment on one ring are compensated by the other rings, preventing catastrophic failure from single-point binding.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Device complexity

If a single driver ring is used, then the device structure is simpler, but a single aberration in the surface or groove can cause the device to fail

Engineering Contradiction:

Improvenumber of driver ringsVSAvoidsystem failure resistance

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The driver function is segmented into multiple independent rings, so that a defect or aberration affecting one ring does not cause complete system failure. The other rings continue to engage the grooves, maintaining operational capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each driver ring provides localized engagement with the helical grooves at different positions. This distribution of functional quality along the rod ensures that local defects do not compromise the overall system reliability.

Inventive Principle:

Principle #3Local quality

4Ease of operation

If the driver ring is positioned as the inward most ring, then the rotating rod can effectively drive the drapery, but extending the drapery past the inside edge of the driver ring causes the driver ring to tilt

Engineering Contradiction:

Improvedrapery movement controlVSAvoiddriver ring perpendicular alignment

Core Design Contradiction:

Ease of operationVSShape

Solution Approach 1:

By positioning driver rings at different axial locations on the rod rather than concentrating them at the inward most position, the system allows the drapery to extend beyond the inwardmost ring without causing tilt. The distributed positioning maintains perpendicular alignment through spatial distribution.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS9801486B2Crossover bracket for drapery

Publication Date: 2017.10.31 CURRENT PRODUCTS CORP

AI summary

A drapery system that operates by rotating a rod having one, or a pair of left hand twist helical grooves, and one or a pair of right hand twist helical grooves, where the left hand twist and right hand twist helical grooves cross one another in equal spaced alignment across the length of the rotating rod. A plurality of idler rings and at least one driver ring are positioned around the drapery rod. The idler rings have a smooth interior surface whereas the driver rings include at least one tooth that engages a helical groove of the rotating rod. As the rotating rod is rotated, the driver ring is driven across the length of the rotating rod, thereby opening and closing the system. The system also includes a mounting bracket allows for extending the drapery past the inward edge of the inward most ring.