Shape-Memory Bezel Crimping for Non-Deformable Substrates
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Solution Overview
Problem
Traditional crimping methods for decorative elements on non-deformable materials like ceramics, silicon, and composites fail due to lack of plastic deformation capacity, leading to unreliable bonding and mechanical retention issues.
Innovation Solution
A bezel with a shape memory alloy rod that undergoes reversible transformation, allowing it to be easily assembled and disassembled within a substrate, providing mechanical anchoring and crimping capabilities without altering the substrate's properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional crimping method is used on non-deformable materials, then mechanical retention is achieved, but the substrate is damaged or the method is inapplicable
Solution Approach 1:
The patent introduces a bezel as an intermediary component between the non-deformable substrate and the decorative element. The bezel contains deformable claws that can be crimped to secure the stone, while the bezel itself absorbs the deformation stress instead of the substrate. This mediator approach allows mechanical retention through crimping without directly applying deformation forces to the fragile substrate.
Solution Approach 2:
The patent segments the crimping function from the substrate by creating a separate bezel component. The substrate provides only the mounting location, while the bezel provides the crimping mechanism. This segmentation allows the crimping action to be isolated to a component designed for deformation (the bezel claws) rather than the substrate itself.
2Adaptability or versatility
If bonding operation is used instead of crimping, then non-deformable materials can be used, but mechanical retention and long-term holding are not ensured
Solution Approach 1:
The patent merges the advantages of both bonding and crimping methods. The bezel is bonded to the substrate using adhesive bonding (enabling compatibility with non-deformable materials), while the claws of the bezel simultaneously crimp the decorative element (providing mechanical retention). This combination ensures both material versatility and reliable long-term holding through dual retention mechanisms.
3Reliability
If hot shaping mode is used to fill cavity with ductile material, then crimping capability is achieved, but thermal constraints and tool complexity increase
Solution Approach 1:
The patent uses a pre-formed bezel component with integrated claws that requires no hot shaping or complex thermal processing. The bezel is designed as a ready-to-install component that can be mechanically attached to the substrate and immediately used for crimping decorative elements. This eliminates the need for complex hot shaping equipment and thermal constraint management.
4Reliability
If bezel is fixed in substrate, then decorative element can be crimped, but bezel cannot be disassembled or repositioned
Solution Approach 1:
The patent employs a dynamic fixing mechanism where the bezel can be initially inserted into the substrate with relatively low force, and then locked into place through deformation of its claws that engage with features on the substrate. This dynamic process allows for easy insertion and removal during assembly/disassembly, while providing secure fixed positioning during normal use. The claws can be deformed to release the locking action when needed.
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
Enables secure and repeatable fixing of decorative elements without damaging the substrate, suitable for materials that cannot undergo traditional crimping, and allows for blind hole installations without rear access.
Implementation Method 1
a circular groove arranged to receive a rod made of a shape memory alloy capable of undergoing a reversible transformation. According to the invention, said rod can pass from a retracted position in which it rests in said groove, to an extended position in which said rod protrudes at least partially from said groove to hold the bezel in the substrate.
Data Source
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AI summary
The invention relates to a bezel comprising a ring supporting setting elements for a decorative element, this bezel being arranged to be placed radially in a recess formed in a substrate of an article to be decorated. According to the invention, the bezel comprises a circular groove arranged to receive a rod made of a shape-memory alloy capable of undergoing reversible transformation, said rod being able to move from a retracted position in which it rests in said groove, to an extended position in which said rod protrudes at least partially from said groove to hold the bezel in the substrate.