Double Roman Shade Structure With Hidden Cord Weaving

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Solution Overview

Problem

Conventional roman shades have complex weaving processes and durability issues due to separate ring formation, and exposed cords pose safety hazards, especially for children.

Innovation Solution

A double roman shade design where a cord is integrated into the curtain fabric, forming creases without a separate ring, using a connection belt woven between two curtains with the cord passing through, enhancing durability and hiding the cord to prevent accidents.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a separate ring is formed by having some wefts not intersect warps to connect the cord to the fabric, then the cord can be connected to the fabric, but the weaving process becomes complicated and durability is weakened

Engineering Contradiction:

Improveweaving processVSAvoiddurability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent merges the cord connection function directly into the fabric weaving structure. The cord passes through the fabric at regular intervals and is secured by folding the fabric back over itself, eliminating the need for separate rings. This integration simplifies the weaving process while maintaining durability, as the cord connection becomes an inherent part of the fabric construction rather than an added component.

Inventive Principle:

Principle #5Merging (Combining)

2Shape

If the cord is made transparent and thin to be invisible, then the appearance is improved, but safety hazards occur when the cord is exposed to children

Engineering Contradiction:

ImproveappearanceVSAvoidsafety hazard

Core Design Contradiction:

ShapeVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the cord from visible exposure by incorporating it entirely within the fabric structure. The cord passes through the fabric and is secured by folding the fabric back, completely enclosing the cord within the fabric layers. This eliminates the safety hazard of exposed cords while maintaining aesthetic appearance, as the cord becomes an internal structural element rather than an external component.

Inventive Principle:

Principle #2Taking out (Extraction)

3Device complexity

If the cord is exposed to the outside for structural simplicity, then the structure is simplified, but accidents may occur when the cord is wound around a child's hand or neck

Engineering Contradiction:

ImprovestructureVSAvoidaccident risk

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent applies the nesting principle by placing the cord inside the fabric structure. The cord passes through the fabric and is enclosed by folding the fabric back over itself, creating a nested configuration where the cord is contained within the fabric layers. This maintains structural simplicity while eliminating accident risk, as the cord is nested within the fabric rather than being exposed externally.

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentUS9022090B2Double roman shade curtain and double roman shade using the same

Publication Date: 2015.05.05 DAIKYO

AI summary

Disclosed herein is a double roman shade curtain which is configured to include a cord 10, a first curtain 20, a second curtain 30, and a connection belt 40. Further, the present invention relates to a double roman shade which is configured to include a cord 10, a first curtain 20, a second curtain 30, a connection belt 40, a rotating bar 50, a frame 60, and a tow rope 70.