Elastic Cord Sheet Fastener to Reduce Bed-Making Effort
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Solution Overview
Problem
Existing bed sheets, both fitted and unfitted, require significant effort to secure tightly around a mattress, especially for individuals with limited strength, and are time-consuming for institutions like hotels and hospitals.
Innovation Solution
A system utilizing a continuous cord with a drawstring and removably connectable cords to secure a fabric sheet to a bed, where the cord changes length to snugly fit around the mattress, allowing easy attachment and detachment without losing structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional fitted sheets or unfitted sheets are used, then a sheet can cover the mattress, but significant effort is required to secure it tightly around the mattress corners
Solution Approach 1:
An elastic cord with drawstring acts as an intermediary mechanism between the sheet and the mattress corners. The cord is attached to the sheet corners and pulled to tighten the sheet around the mattress, converting the difficult manual tucking action into a simple pulling motion that can be easily performed by anyone regardless of strength.
Solution Approach 2:
The elastic cord changes its length parameter when the drawstring is pulled. The cord is initially in a relaxed state allowing easy attachment, then transitions to a contracted state when tension is applied through the drawstring, automatically tightening the sheet to the desired tension without requiring the user to manually adjust or maintain force.
2Ease of operation
If traditional sheets are tucked under mattress corners, then the sheet can be secured, but it is difficult for individuals with limited strength such as the elderly or handicapped
Solution Approach 1:
The elastic cord serves as a mechanical intermediary that eliminates the need for strong manual force. Instead of requiring users to physically lift and tuck heavy fabric under mattress corners, the cord transmits the tightening force through elastic tension, allowing users with limited strength to securely fasten the sheet by simply pulling the drawstring.
Solution Approach 2:
The elastic cord system is self-tightening. Once the drawstring is pulled to the desired tension, the elastic properties of the cord automatically maintain the tight fit around the mattress corners without requiring continuous manual force or adjustment, making the system accessible to individuals with limited physical capability.
3Productivity
If employees manually tuck sheets in hotels or hospitals, then beds can be made, but it consumes valuable time that is expensive for institutions
Solution Approach 1:
The sheet is pre-attached to the elastic cord with corners connected before being placed on the mattress. This preliminary preparation allows the sheet to be quickly positioned and secured by simply pulling the drawstring, eliminating the time-consuming step of manually tucking and adjusting the sheet under each mattress corner during the bed-making process.
Solution Approach 2:
The elastic cord with drawstring acts as a rapid securing mechanism that replaces the slow manual tucking process. The intermediary cord system allows employees to quickly tighten and secure the sheet in a single pulling motion, dramatically reducing the time required to make each bed and thereby reducing the labor cost per bed in institutional settings.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution simplifies the process of securing a bed sheet, reducing the effort required and time spent, making it easier for individuals of all strengths and cost-effective for institutions, while maintaining a tight fit around the mattress.
Implementation Method 1
The cord has an outer fabric layer covering an elastic layer which, in turn, covers a hollow portal
Data Source
AI summary
A cord with an outer fabric covering over a sheath and draw string is used to secure a sheet to a bed. The cord has a series of clips attached there-to by a second cord or by direct attachment. The clips are in turn removably attachable to edges of a sheet. One then tightens the draw string, reducing the length of the cord, and continues to do so until the sheet is pulled to a bottom side of the mattress. In this manner, the sheet ends are beneath the mattress and tightened thereto by the cord. The cord further snaps to itself, in embodiments of the disclosed technology, to form a closed loop around the bed.