Cover for a duvet and method of use
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Solution Overview
Problem
Existing duvet covers with zippers on three sides often malfunction when trying to enclose the duvet evenly, particularly around corners.
Innovation Solution
A duvet cover design with closures on two opposite sides, a fold on another side, and a hood for the fourth side, using slide fasteners or other connectors to simplify installation and ensure complete enclosure without corner issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If zippers are disposed on three sides of the cover to enclose the duvet, then the duvet can be contained within the cover, but the zippers malfunction when going around the corners
Solution Approach 1:
The patent removes the zipper from the corner area entirely, extracting the problematic element from the system. Instead of having zippers go around corners, the design uses zippers only on two opposite sides, eliminating the corner malfunction issue while maintaining enclosure functionality through the fold and hood mechanism.
Solution Approach 2:
Instead of closing all four sides with zippers as in traditional designs, the patent inverts the approach by leaving one side completely open with a fold and hood mechanism. This reversal of the closure strategy eliminates corner zipper problems while achieving complete duvet enclosure.
2Ease of operation
If zippers are disposed on three sides of the cover, then the duvet can be enclosed, but the installation process becomes difficult and time-consuming
Solution Approach 1:
The duvet is positioned on the cover before any closure operations begin, with the corners aligned in advance. This preliminary positioning simplifies the subsequent folding and zipping operations, making the installation process more efficient and reducing the time required.
Solution Approach 2:
The closure process is divided into distinct sequential steps: positioning the duvet, folding one side, zipping two opposite sides, and finally folding the hood over the open side. This segmentation of the installation process into manageable stages improves ease of operation and reduces overall installation time.
3Reliability
If zippers go around the corners of the cover, then complete enclosure is achieved, but the zippers tend to malfunction
Solution Approach 1:
The zipper mechanism is extracted from the corner regions and relocated to straight edges only. This design modification eliminates the geometric complexity of corner zippers while maintaining enclosure effectiveness through alternative means (fold and hood).
Solution Approach 2:
Different closure mechanisms are applied to different regions of the cover: zippers are used on two opposite sides where straight-line closure is effective, while the other two sides use fold and hood mechanisms better suited for corner areas. This localized approach optimizes reliability for each region.
Data Source
AI summary
A cover for a duvet includes a sheet of fabric which has a first section and a second section. The first section has a left side, a right side, and a transverse side. The second section has a left side, a right side, and a transverse side. A left closure is configured to only connect the left side of the first section to the left side of the second section, and a right closure is configured to only connect the right side of the first section to the right side of the second section. A hood is connected to either the transverse side of the first section or the transverse side of the second section. After the left and rights sides of the two sections are connected, the hood is folded over to completely enclose the duvet.