Stocking pairing device
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Solution Overview
Problem
Existing stocking pairing devices are not designed to hold and release pairs of stockings quickly, easily, safely, and economically during laundering, often requiring complex mechanisms that can damage garments and are difficult to use, especially for children and elderly individuals.
Innovation Solution
A stocking pairing device comprising a pair of curvilinear arms with a U-shaped vertex and outwardly curved portions, featuring ellipsoid knobs that allow for easy interlocking and twisting to secure and release stockings without hardware installation, made from durable and lightweight nylon for efficient use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex mechanisms are used to secure and release stockings, then the device can hold stockings firmly, but the device becomes difficult to use and may damage garments
Solution Approach 1:
The device is divided into two separate arms that can operate independently. Each arm has its own knob for securing and releasing stockings, allowing simple one-handed operation while maintaining firm holding through the combined action of both arms
Solution Approach 2:
The spring mechanism automatically returns the arms to their original position after releasing the stockings, eliminating the need for manual resetting. The user simply releases the knobs and the device self-resets for the next pair of stockings
2Reliability
If hardware installation is required for stocking pairing devices, then the device can provide secure fastening, but the device becomes difficult to install and maintain
Solution Approach 1:
The spring mechanism and arm structure are combined into a single integrated unit that requires no separate hardware installation. The entire device can be manufactured as one piece or easily assembled components without requiring screws, bolts, or other fastening hardware
Solution Approach 2:
The spring-loaded mechanism automatically maintains the appropriate tension and positioning of the arms, eliminating the need for manual adjustment or installation calibration. The device is plug-and-play ready upon assembly
3Strength
If the device is made durable and lightweight, then it can withstand repeated use, but the material selection and manufacturing become more complex
Solution Approach 1:
The device utilizes the inherent properties of nylon material - specifically its balance of strength, flexibility, and light weight - to achieve durability without complex engineering. The material parameters are selected to provide the necessary spring tension and structural integrity
Solution Approach 2:
The device is constructed entirely from nylon, a single composite material that provides both the structural arms and the spring mechanism. This eliminates the need to join different materials and simplifies manufacturing while maintaining durability through the material's inherent properties
Data Source
AI summary
A pair of arms includes a first arm and a second arm, each having a curvilinear configuration. Each arm has a lower portion and an upper portion. A U-shaped vertex couples the lower end of the lower portion of the first arm and the lower end of the lower portion of the second arm. A first outwardly curved portion has an upper end and a lower end. The lower end of the first outwardly curved portion is coupled to the upper end of the lower portion of the first arm. A second outwardly curved portion has an upper end and a lower end. The lower end of the second outwardly curved portion is coupled to the upper end of the lower portion of the second arm. First and second knobs are at the upper ends of the first and second outwardly curved portions respectively.