Pocketed Spring Seating Cushion With Zoned Edge Support
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Solution Overview
Problem
Existing seating products rely heavily on foam for support, which can be inefficient in terms of material usage and design variability, particularly in pocketed spring assemblies used in seating cushions.
Innovation Solution
A seating cushion design featuring a pocketed spring assembly with a central matrix of interconnected pockets and perimeter pockets of varying dimensions and heights, allowing for modular and customizable support structures that reduce foam usage and enhance contouring and firmness effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If foam is used for support in seating products, then support function is provided, but material usage efficiency is reduced and design variability is limited
Solution Approach 1:
The seating product is divided into modular pocketed spring units that can be independently configured. Each pocket contains an individual spring, allowing the support structure to be segmented into discrete, replaceable modules that provide both structural support and design flexibility without requiring extensive foam usage.
Solution Approach 2:
Different regions of the seating product utilize springs with varying characteristics (coil diameter, wire gauge, pocket dimensions) to provide localized support properties. This allows different areas to have tailored support qualities while reducing the need for uniform foam padding throughout the entire product.
2Strength
If perimeter coils are made smaller in diameter, then edge support is improved and foam usage is reduced, but structural uniformity is compromised
Solution Approach 1:
The spring assembly incorporates two distinct spring types: interior springs with larger diameters for central comfort and perimeter springs with smaller diameters for edge support. This local differentiation allows each region to have optimized properties for its specific function while maintaining overall structural integrity through the unified pocketed construction method.
Solution Approach 2:
The spring matrix is segmented into interior and perimeter zones with different spring specifications. This segmentation allows the perimeter springs to be specifically engineered for edge support functionality while the interior springs handle different load requirements, with both zones connected through the fabric pocket structure that maintains structural coherence.
3Adaptability or versatility
If all pockets have the same dimensions, then manufacturing is simplified, but contouring and firmness effects are limited
Solution Approach 1:
The patent employs multiple spring configurations within the same product, including varying coil diameters (larger interior, smaller perimeter), different wire gauges, and different pocket heights in specific regions. This local variation enables customized contouring and firmness effects in different seating zones while maintaining a standardized pocketed construction approach that simplifies the overall manufacturing process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design achieves reduced foam usage while providing adjustable support and contouring options, enhancing the modularity and variability of seating products by utilizing a central matrix of interconnected pockets with perimeter pockets of different dimensions and heights.
Implementation Method 1
Each of the pockets comprises a coil spring encased in fabric
Data Source
AI summary
A seating cushion with a pocketed spring assembly includes a plurality of interior strings of springs joined to each other. The interior strings of springs comprises a plurality of interconnected pockets. Each pocket contains at least one coil spring. The pocketed spring assembly forms a central matrix. The pocketed spring assembly further includes at least one perimeter string of springs. Each perimeter string of springs comprises a plurality of interconnected perimeter pockets. Each pocket of the central matrix has a maximum diameter or width of a first dimension and each pocket of the perimeter string of springs has a maximum diameter or width of a second dimension. The first dimension is greater than the second dimension.