Leg assembly
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Solution Overview
Problem
Existing leg assemblies for furniture require high skill and precise equipment for manufacturing and are often specific to one type of planar member, limiting their interchangeability and ease of assembly/disassembly.
Innovation Solution
A leg assembly featuring four legs with clamping devices and adjustable straps that can be easily attached and detached from various planar members, providing enhanced structural rigidity and allowing for custom configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional leg assemblies use precise woodworking features (tenons, mortises) or specialized fasteners, then structural strength is improved, but manufacturing complexity and skill requirements increase significantly
Solution Approach 1:
The leg assembly is divided into separate components: legs with external threaded portions and a planar member with corresponding internal threaded features. This segmentation allows each component to be manufactured independently using simpler processes, eliminating the need for complex joinery while maintaining structural integrity through threaded fastening.
Solution Approach 2:
The planar member is designed with a universal coupling mechanism (internal threaded features) that can accommodate multiple types of legs with external threaded portions. This universal interface allows the same planar member to work with different leg styles, materials, and configurations, reducing manufacturing complexity across the product line.
2Strength
If legs are specifically configured for one type of planar member, then coupling strength is improved, but adaptability to different planar members decreases
Solution Approach 1:
The coupling mechanism uses standardized external and internal threaded features that create a universal interface. Legs with external threads can be coupled to any planar member with matching internal threads, enabling interchangeability across different furniture configurations while maintaining strong couplings through the threaded fastening system.
Solution Approach 2:
The design allows for variation in leg parameters (length, material, aesthetic finish) while maintaining the same external threaded coupling interface. This parameter flexibility enables adaptation to different planar members without compromising coupling strength, as the critical coupling parameters (thread geometry) remain consistent.
3Stability of the object's composition
If specialized coupling members (bolts, screws) are used to rigidly secure legs, then structural rigidity is improved, but ease of assembly and disassembly decreases
Solution Approach 1:
The coupling system transitions from a static, permanent joint to a dynamic, reversible connection. The threaded interface allows the legs to be easily screwed onto and off of the planar member, providing both rigid structural connection during use and simple disassembly when needed, unlike traditional woodworking joints or permanent fasteners.
4Reliability
If tools are required to tighten coupling members, then coupling reliability is improved, but ease of operation and assembly speed decreases
Solution Approach 1:
The coupling mechanism is designed to be self-servicing, allowing users to assemble and disassemble legs without requiring specialized tools. The external threaded portions on legs interface with internal threaded features in the planar member, enabling tool-free attachment by simply screwing the legs into place, thus maintaining reliability while dramatically improving ease of operation.
Data Source
AI summary
A leg assembly includes four legs, each of the legs configured to couple to an outer edge of a generally planar member to form an assembly that has a surface supported by the four legs. The leg assembly also includes an adjustable strap coupled to and extending between two of the four legs to form a bracing structure to provide enhanced structural rigidity for the assembly for attachment to a planar element includes four legs.