Interlocking Hem Structure for Tool-Free Assembly and Recycling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional furniture items and building structures face challenges due to their complex assembly processes, requiring different materials and manufacturing processes, leading to high costs, logistical complexities, and environmental issues related to refurbishment and recycling, as they often necessitate specialized tools and long lead times for replacement components.
Innovation Solution
A structure comprising identical body members with interlocking components that can be assembled without tools, using a unibody construction and interlocking flanges, allowing for easy assembly and disassembly, minimizing the need for special tools and reducing material diversity, enabling mass production and efficient recycling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different components are made from different materials using different manufacturing processes, then the furniture item can achieve functional diversity and structural complexity, but the assembly complexity increases, requiring additional fasteners, welds, and specialized tools
Solution Approach 1:
The patent applies homogeneity by making all body members identical and constructed from the same material (metal sheet). This eliminates the need for different fasteners, adhesives, or welds that would be required when joining dissimilar materials. The identical construction allows any body member to interlock with any other body member using the same interlocking hem mechanism, greatly simplifying assembly while maintaining functional diversity through different arrangements of identical components
2Strength
If conventional fastening methods (welds, glues, screws) are used to attach components, then the structural strength is maintained, but the assembly time increases and specialized tools are required
Solution Approach 1:
The patent replaces complex mechanical fastening systems (welds, glues, screws) with a simplified mechanical interlocking system. The interlocking hem features a flange that engages with a receiving cavity in the adjacent body member, creating a secure mechanical connection without requiring external fasteners. This substitution maintains structural strength while eliminating the need for specialized tools and significantly reducing assembly time to simple snap-together motions
3Adaptability or versatility
If components are made separately by different manufacturers, then the supply chain flexibility is improved, but the logistics complexity and shipping costs increase
Solution Approach 1:
The patent applies universality by designing all body members with identical interlocking hems and compatible dimensions. This universal design allows any body member to serve multiple functions and interlock with any other body member regardless of its original manufacturing source. The standardized interface simplifies logistics by allowing components from different manufacturers to be seamlessly integrated, reducing the need for specialized handling or assembly procedures for different component types
4Reliability
If complex hardware and specialized tools are used for assembly, then the connection reliability is improved, but the ease of operation deteriorates, requiring trained personnel and special equipment
Solution Approach 1:
The patent applies self-service through the self-aligning and self-latching features of the interlocking hem. The flange and receiving cavity are designed to automatically guide the joining process, with the flange inserting into the cavity and securing itself without requiring alignment tools or additional fasteners. This self-service mechanism maintains connection reliability through the robust mechanical interlock while dramatically improving ease of operation, allowing assembly by untrained personnel using only hand strength
Data Source
AI summary
A structure includes a first body member including a first interfacing side edge and a first interconnecting component at the first interfacing side edge and a second body member identical to the first body member, the second body member including a second interfacing side edge and a second interconnecting component at the second interfacing side edge. The first interconnecting component engages with the second interconnecting component to secure the first body member and the second body member together.