Ready-to-Assemble Sofa Packaging With Nested Arm Storage

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Solution Overview

Problem

Existing ready-to-assemble (RTA) furniture systems face inefficiencies in packaging volume and assembly process, particularly in storing and shipping arm portions, which leads to increased shipping and handling costs and requires tools for assembly.

Innovation Solution

The RTA furniture system features a base assembly with a storage cavity for arm assemblies, allowing arm portions to nest within the horizontal seat support frame, enabling tool-free assembly and efficient packaging, using male-female connections and wing nuts for rapid assembly without tools, and vacuum packaging of cushions to reduce volume.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If arm portions are stored separately from the base assembly, then assembly is simpler, but shipping volume increases and handling costs increase

Engineering Contradiction:
Improveassembly simplicityVSAvoidshipping volume
Core Design Contradiction:
Ease of operationVSVolume of moving object

Solution Approach 1:

The arm portions are designed to nest within the cavity of the base assembly, with the arm portions fitting inside the hollow space of the base frame. This nesting arrangement allows all components to be stored in a compact configuration during shipping, significantly reducing shipping volume while maintaining ease of assembly through simple insertion and fastening operations.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Strength

If conventional fastening methods are used, then connection strength is sufficient, but tool-free assembly cannot be achieved

Engineering Contradiction:
Improveconnection strengthVSAvoidassembly effort
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The fastening system incorporates self-servicing features where the arm portions have pre-formed tabs that automatically engage with slots in the base assembly, and wing nuts can be hand-tightened without tools. The design allows the components to self-align and self-secure through simple insertion motions, eliminating the need for external tools while maintaining adequate connection strength for furniture application.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS7744162B2Ready to assemble sofa and method for packaging same
Publication Date: 2010.06.29 GRIGGS JR BILLY JOE
  • US7744162B2 patent drawing
  • US7744162B2 patent drawing
  • US7744162B2 patent drawing

AI summary

A furniture system having a base frame, side pieces and a back portion, that assembles quickly and disassembles into a configuration that optimizes space when shipped.