Active Interlocking Fasteners with Reactive Materials
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Solution Overview
Problem
Conventional interlocking fasteners require significant separation force to disconnect, which can lead to damage and are not easily controlled for disengagement, limiting their versatility and efficiency.
Innovation Solution
The development of active interlocking fasteners made from reactive materials such as electroactive polymers, shape memory alloys, and stimuli-responsive gels that can alter their shape or position in response to external stimuli, allowing for controlled mechanical engagement and disengagement with minimal force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional interlocking fasteners are used to maintain high tension strength for secure engagement, then the mechanical engagement strength is improved, but the separation force required becomes excessively high causing damage and difficulty in controlled disengagement
Solution Approach 1:
The fastener system transitions from a static mechanical engagement to a dynamic controlled engagement. The reactive material allows the fastener to change its mechanical properties (shape, stiffness, or position) in response to external stimuli, enabling high engagement strength during attachment while allowing easy separation when stimulated, thus resolving the contradiction between strong engagement and easy controlled disengagement
Solution Approach 2:
The invention changes the physical or chemical parameters of the fastener material through external stimuli (electrical, thermal, chemical). This parameter change allows the fastener to transition between high-strength engagement state and low-force separation state, enabling both strong mechanical engagement and controlled disengagement without damage
2Reliability
If conventional interlocking fasteners are designed for high tension strength, then the reliability of secure engagement is improved, but the force required for separation increases leading to potential damage
Solution Approach 1:
The reactive material enables the fastener to dynamically adjust its mechanical properties. During engagement, the fastener maintains high reliability with strong mechanical bonding. During separation, external stimuli trigger a change in the reactive material that reduces the separation force needed, preventing damage while maintaining engagement reliability
Solution Approach 2:
The invention replaces purely mechanical fastening with a system that incorporates reactive materials responsive to external stimuli. This substitution allows the fastener to maintain reliable mechanical engagement while using non-mechanical means (electrical, thermal, or chemical stimuli) to control separation, eliminating the harmful high separation forces
3Adaptability or versatility
If reactive materials are integrated into interlocking fasteners to enable controlled engagement, then the versatility and ease of operation are improved, but the device complexity increases
Solution Approach 1:
The reactive material serves multiple functions: it provides the interlocking mechanism, responds to external stimuli for controlled engagement/disengagement, and can be integrated into existing fastener designs. This multi-functionality increases versatility while managing complexity by combining multiple capabilities in a single material system
Solution Approach 2:
The reactive material's ability to change its parameters (shape, stiffness, position) in response to external stimuli provides versatile controlled engagement capabilities. The complexity is managed by using materials that inherently respond to common stimuli (electricity, heat, chemicals) rather than requiring complex mechanical or electronic control systems
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 interlocking fasteners to maintain high tension strength for secure engagement while requiring low force for disengagement, enhancing versatility and reducing the risk of damage, with the ability to be controlled by various stimuli like electrical signals, temperature, or chemicals.
Implementation Method 1
The plurality of first interlocking fasteners or the plurality of second interlocking fasteners includes a reactive material configured to vary a mechanical engagement between the plurality of first interlocking fasteners and the plurality of second interlocking fasteners as a function of an external stimulus
Implementation Method 2
The development of active interlocking fasteners made from reactive materials such as electroactive polymers, shape memory alloys, and stimuli-responsive gels that can alter their shape or position in response to external stimuli
Implementation Method 3
The plurality of first interlocking fasteners comprises a reactive material configured to, as a function of an external stimulus, vary a shape or position of the plurality of first interlocking fasteners to alter a mechanical engagement
Data Source
AI summary
An active interlocking fastener system is adapted to control an interlock in response to an external stimulus. The interlocking fastener system includes a first element including a plurality of first interlocking fasteners. The interlocking fastener system also includes a second element including a plurality of second interlocking fasteners configured to couple to the first plurality of interlocking fasteners. The plurality of first interlocking fasteners or the plurality of second interlocking fasteners includes a reactive material configured to vary a mechanical engagement between the plurality of first interlocking fasteners and the plurality of second interlocking fasteners as a function of the external stimulus.