All-Truss Foundation Kit Assembly for Flat Mattress Support
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Solution Overview
Problem
The existing methods for assembling foundation units are time-consuming and labor-intensive, leading to increased costs and inadequate support for mattresses, which results in sagging and reduced mattress lifespan.
Innovation Solution
A method involving pre-formed cross trusses with top and bottom rail notches and side rails, where the cross trusses and side rails are assembled into a compact kit, utilizing truss locator guides for quick orientation and affixation, allowing for rapid assembly of a foundation unit with enhanced support capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional foundation units are assembled using conventional methods, then the assembly can be completed with standard tools and procedures, but the assembly process is time-consuming and labor-intensive
Solution Approach 1:
The cross trusses are pre-assembled with notches cut at precise locations before delivery to the assembly site. The kit components are pre-configured with alignment features and pre-drilled holes for fasteners, eliminating the need for on-site measurement and preparation work, thereby significantly reducing assembly time
Solution Approach 2:
The foundation unit is divided into modular segments (cross trusses, side rails, end pieces) that can be independently manufactured and assembled. This segmentation allows for parallel assembly of multiple components and simplifies the overall assembly process, improving productivity while reducing total assembly time
2Ease of manufacture
If pre-formed cross trusses with notches are used, then assembly is simplified and accelerated, but additional manufacturing steps are required for the notches
Solution Approach 1:
The notch-cutting operation is integrated into the cross truss manufacturing process itself, combining two operations (truss formation and notch creation) into a single manufacturing flow. This merging eliminates the need for separate notch-cutting equipment and simplifies the overall manufacturing process while maintaining ease of assembly
3Ease of manufacture
If conventional foundation units are used, then manufacturing is simpler, but they provide inadequate support for mattresses resulting in sagging
Solution Approach 1:
The cross trusses are designed with varying local properties: thicker sections at support points for maximum load-bearing capacity, and optimized notch geometries for precise rail engagement. This local quality enhancement provides superior mattress support and prevents sagging while maintaining manufacturing simplicity through standardized production processes
4Volume of moving object
If the foundation unit is designed as a compact kit, then storage and shipping efficiency is improved, but assembly requires precise orientation and positioning
Solution Approach 1:
The cross trusses incorporate asymmetric features such as directional notches and keyed connection points that naturally guide correct orientation during assembly. This asymmetric design eliminates the need for complex alignment procedures while maintaining compact kit packaging, as the asymmetric features self-align components during the assembly process
Data Source
AI summary
An all truss foundation unit, method of making the foundation unit, and a foundation unit kit. The foundation unit is formed of multiple cross trusses interconnected by bridging top and bottom side rails. This results in a flat surface on both the top and the bottom of the foundation unit. The kit is formed of a plurality of the trusses and four side rails, with the trusses and side rails being oriented together with their longitudinal dimensions aligned in a generally parallel orientation and with at least some of their flat sides in contact with one another. When the foundation unit is constructed, a truss locator guide is provided on at least two of the side rails, and the cross trusses are oriented in a parallel, spaced relationship in accordance with the truss locator guide.