Shape-Memory Jewelry Assembly with Segmented Configuration
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Solution Overview
Problem
Existing shape-memory alloy jewelry and accessories face issues such as significant shape changes due to temperature variations, slow transformation to closed positions, complex mechanical constructions, and reduced aesthetic value, leading to discomfort and functionality problems.
Innovation Solution
A multipurpose assembly with a variable configuration comprising shape-memory members connected to non-shape-memory elements via flexible connection means, allowing for easy deformation and restoration to a memorized shape without altering the overall shape, with a transition temperature adjustable to body temperature for convenient wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the shape-memory alloy extends substantially throughout the length of the jewel, then the jewel can automatically assume a closed position when heated, but the overall shape of the jewel may considerably differ from the previously imparted shape, affecting function and wearability
Solution Approach 1:
The invention divides the jewel into distinct segments: a shape-memory alloy portion and a non-shape-memory alloy portion. This segmentation allows the shape-memory portion to provide automatic closing functionality while the non-shape-memory portion maintains the overall shape and aesthetic appearance, resolving the contradiction between automatic closing function and shape stability.
2Adaptability or versatility
If the shape-memory material extends substantially throughout the support structure, then the jewel can change configuration with temperature, but the exterior appearance and comfort of use are considerably affected
Solution Approach 1:
The invention applies local quality by making only a portion of the jewel (the first portion) from shape-memory alloy while the second portion is made from non-shape-memory alloy. This allows temperature-responsive configuration change in the shape-memory portion while the non-shape-memory portion maintains consistent exterior appearance and comfort characteristics across different temperatures.
3Ease of operation
If the passage from open position to closed position occurs gradually due to body heat, then the jewel can be worn comfortably, but the action for stable wearing turns out to be slow and inconvenient
Solution Approach 1:
The invention implements preliminary action by pre-deforming the shape-memory alloy portion to a specific configuration that enables rapid transformation. When activated by body heat, the pre-programmed shape-memory properties cause the portion to quickly assume the desired closed configuration, reducing the time to reach stable wearing while maintaining comfort.
4Reliability
If a cooperating element is added to reduce hysteresis, then the activation and deactivation temperatures are reduced, but the mechanical construction is complicated and aesthetic value is reduced
Solution Approach 1:
The invention extracts the hysteresis reduction function from a separate cooperating element and integrates it into the shape-memory alloy portion itself through specific deformation and thermal processing. This eliminates the need for additional mechanical components, simplifying the construction while maintaining the desired temperature range for shape memory effect.
5Temperature
If the shape-memory element is obtained from a tubular element, then the transition temperature can be controlled, but the jewel is generally poorly flexible and the connection is substantially rigid
Solution Approach 1:
The invention creates a composite structure by combining shape-memory alloy material with non-shape-memory alloy material in a single integrated portion. This composite approach allows control of transition temperature in the shape-memory portion while the non-shape-memory portion provides flexibility and reduces rigidity, eliminating the need for tubular element construction.
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 assembly provides high resistance, cost-effectiveness, and ease of use, allowing multiple configurations without forcing shape changes, maintaining functionality and wearability across temperatures, and enhancing aesthetic appeal.
Implementation Method 1
a first member (2) made of a shape-memory material, having a base configuration, referenced Cb, memorized at a predetermined transition temperature (TH) of the material
Implementation Method 2
The base configuration of the first member (2) is mechanically deformable at temperatures T below the transition temperature TH to assume a modified configuration
Data Source
Figure 1~3
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Figure 7~10
AI summary
Multipurpose assembly with variable configuration, comprising at least one first member (2) made of a shape-memory material, having a first base configuration memorized at a transition temperature (TH) of the material, the base configuration (Cb) being mechanically deformable to assume a modified configuration (Cm) memorized at temperatures lower than the transition temperature (TH). The assembly comprises at least one second member (3) made of a second non-shape-memory material connected to at least one first shape-memory member (2), the first shape-memory member (2) having at least one portion (5, 5') with a fixed configuration for stable connection with at least one second non-shape-memory member (3).