Interlocking Joint System for Emergency Shelters
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Solution Overview
Problem
Current emergency structures are difficult to assemble, not weather-proof, and lack ease of transportation and distribution, often requiring special tools and training.
Innovation Solution
An interlocking joint system with parallel side members, tubular members, slugs, locking grooves, and retention tabs that allows for tool-free assembly of strong and weather-resistant structures, redirecting wind and weight loads into manageable forces, enabling use of various materials and easy transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional emergency structures are designed to be strong and weather-proof, then structural strength and weather resistance are improved, but assembly complexity and difficulty increase
Solution Approach 1:
The structure is divided into modular components (walls, roof sections, joints) that can be independently manufactured and assembled. Each wall panel includes integrated joint members with slugs and retention tabs, allowing standardized connection without complex field assembly. This segmentation enables strong weather-resistant construction while maintaining simple tool-free assembly through pre-fabricated interlocking components.
Solution Approach 2:
The joint member design features nested components where slugs are inserted into tubular members and secured by retention tabs that fold or lock into place. The retention tabs are nested within the joint structure, and the slugs are nested within the tubular members, creating a compact assembly mechanism that achieves strong connections through simple insertion and locking actions without requiring tools or complex procedures.
2Reliability
If emergency structures use traditional assembly methods with multiple parts and connections, then structural reliability is improved, but transportation and distribution difficulty increase
Solution Approach 1:
Multiple structural functions are merged into single integrated components. The joint member combines connection, locking, and reinforcement functions in one piece. Retention tabs are integrated directly into the joint member, eliminating the need for separate fasteners or connectors. This merging reduces the total number of parts while maintaining structural reliability through multi-functional design elements that provide both strength and weather resistance.
Solution Approach 2:
The joint members are designed as universal connectors that can be used at all corners and intersections of the structure. The same basic joint component with slug and retention tab configuration serves multiple structural purposes: providing mechanical connection, lateral bracing, and weather sealing. This universality simplifies transportation by standardizing components and reduces assembly complexity while maintaining reliable structural performance across the entire shelter.
3Manufacturing precision
If emergency structures require special tools and training for assembly, then assembly precision and quality are improved, but assembly time and cost increase
Solution Approach 1:
The joint assembly system is designed to be self-aligning and self-securing. The retention tabs automatically engage with the tubular members when the slug is inserted, and the interlocking geometry provides self-alignment without requiring precision tools or skilled operators. The design incorporates tolerance compensation through the flexible retention tab mechanism, ensuring accurate assembly even with variations in manual handling. This self-service mechanism eliminates the need for special tools or training while maintaining high assembly precision.
4Productivity
If emergency structures are designed for rapid deployment, then response time is improved, but structural strength and weather resistance may be compromised
Solution Approach 1:
Critical structural components are pre-assembled and pre-configured during manufacturing. The joint members come pre-formed with retention tabs and internal geometries that ensure proper alignment and connection strength. Wall panels are pre-fabricated with integrated joint attachments, eliminating the need for field fabrication or complex assembly procedures. This preliminary action allows rapid on-site deployment while ensuring that all structural connections meet required strength and weather resistance specifications through controlled manufacturing processes.
Data Source
AI summary
An interlocking joint system can be used to build emergency shelters. The system provides emergency structures that can be assembled by anyone but still handle heavy weather. The system also provides an armorable air droppable structure for military. Shelters built with the system require no tools or special training and such shelters typically become stronger as more force is applied to the joints. The shelter design laterally redirects how wind load and weight load affects the structure.