Adjustable Cord Ring with Sliding Loops for Stable Fit
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Solution Overview
Problem
Conventional personal ornaments with a single rubber band loop suffer from poor stability and limited design variations due to constant rubber band diameter, leading to inconsistent fit and instability, especially as finger sizes vary and during finger bending or straightening.
Innovation Solution
A personal ornament featuring a cord coiled in a spiral fashion to form two loops with a support member that allows the cord to slide, enabling adjustable loop diameters and accommodating varying finger sizes, with decorative members that can be attached to either the loops or the support member for enhanced stability and design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single rubber band is used to form a loop for a finger ring, then the structure is simple, but the decorative member is unsteadily supported and orientation stability is poor
Solution Approach 1:
The single rubber band loop is divided into two separate loops that are connected by a support member. This segmentation allows the decorative member to be stably supported at the connection point while maintaining structural simplicity. Each loop can independently adapt to finger contours, improving overall stability without excessive complexity.
2Ease of manufacture
If the rubber band diameter is kept constant, then the manufacturing is simple, but the fit is inconsistent for different finger sizes
Solution Approach 1:
The support member incorporates a sliding mechanism that allows dynamic adjustment of the loop configuration. The cord can slide within the through-hole of the support member, enabling the loops to adapt their size and shape according to different finger dimensions. This dynamic adjustment capability is achieved through simple structural elements that maintain ease of manufacture.
3Device complexity
If a single rubber band is used, then the device is simple, but the grip is either too tight or too loose causing poor fit stability
Solution Approach 1:
Dividing the single rubber band into two loops connected by a support member allows each loop to independently conform to the finger's contour. This segmentation distributes the gripping force more evenly, preventing both excessive tightness and looseness. The support member acts as a stable anchor point, improving overall fit reliability without significantly increasing device complexity.
4Device complexity
If the cord loop size is fixed, then the structure is simple, but design variations are limited
Solution Approach 1:
The sliding mechanism within the support member's through-hole enables dynamic reconfiguration of the loop sizes. Users can adjust the cord position to create various loop diameter combinations, significantly increasing design variations. This adaptability is achieved through simple structural elements that maintain ease of manufacture and wearability.
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
The adjustable loop diameters provide a secure and stable fit across different finger sizes and shapes, preventing the ornament from becoming too loose or tight, while allowing for more design variations and user-preferred adjustments, enhancing the overall fit and aesthetic stability.
Implementation Method 1
a first cord 11 made of an elastic material such as silicone rubber is coiled in a spiral fashion
Data Source
AI summary
In the context of a personal ornament, e.g., a finger ring, in which decorative member(s) is/are attached to cord loop(s), making size(s) of loop(s) variable creates the impression of a lighter grip and improves fit. A finger ring has cord made of transparent silicone rubber, support member, and decorative member. Cord is coiled in spiral fashion for two revolutions, forming two loops. One end of cord is secured to through-hole of support member. A portion near the middle of cord is inserted through through-hole of support member, and is capable of moving within through-hole. The other end of cord is secured within through-hole of support member. The two loops of the cord are inserted through decorative member, and cord is capable of moving within decorative member. Absolute and relative sizes of the two loops of cord change automatically in correspondence to changes in finger thickness.