Wire Release Mechanism Using Fuse-Based Actuation
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Solution Overview
Problem
Existing actuation systems for moving or releasing components, such as pins or plungers, often require substantial resources, including explosives or large electrical inputs, leading to increased size, weight, complexity, and safety concerns, while traditional split-spooled wire-restrained devices occupy significant space and have limitations.
Innovation Solution
A compact wire release mechanism featuring two components with longitudinal fingers and a wire wound around them, where a higher resistance fuse allows the wire to loosen and enable movement of one component due to electrical current flow, allowing for selective actuation with minimal energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If explosives or large electrical inputs are used for actuation, then the actuation force is sufficient, but the size, weight, complexity, and safety concerns increase substantially
Solution Approach 1:
The patent replaces traditional mechanical actuation systems (explosives, large electrical inputs, split-spooled devices) with an electrical fuse-based wire release mechanism. The fuse element, when heated by electrical current, melts to release the wire constraint, enabling actuation with minimal electrical energy input while maintaining sufficient mechanical force through the wire restraint system.
Solution Approach 2:
The patent changes the state of the fuse element from solid to liquid/melted state through controlled electrical heating. This parameter change (temperature-induced phase transition) allows the fuse to break the wire constraint selectively, providing actuation force without requiring continuous high energy input or complex mechanical systems.
2Use of energy by stationary object
If traditional split-spooled wire-restrained devices are used, then pyrotechnics and large electrical inputs are avoided, but the devices occupy substantial space and present other limitations
Solution Approach 1:
The patent segments the actuation system into distinct functional components: a compact body housing, longitudinal fingers for wire routing, and a separate fuse element. This segmentation allows the wire restraint mechanism to be miniaturized while maintaining its function, reducing the overall device volume compared to traditional split-spooled designs.
Solution Approach 2:
The patent embeds the fuse element within the wire constraint system, with the fuse positioned along the wire path between the longitudinal fingers. This nested arrangement allows the fuse to be integrated into the compact body structure rather than requiring separate external components, minimizing device volume.
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 the selective holding and releasing of components using a small amount of electrical energy, maintaining a compact size and reducing complexity and safety concerns.
Implementation Method 1
a higher resistance fuse that causes the wire to be loosened about the fingers to allow that component to move to another position due to the flow of electrical current through the fuse
Data Source
AI summary
A wire release mechanism includes two components with adjacent longitudinal fingers and a wire that is wound about the fingers. The wire restrains one of the components in one position and includes a higher resistance fuse that causes the wire to be loosened about the fingers to allow that component to move to another position due to the flow of electrical current through the fuse.