Vehicle Seat Cushion Pan Collision Force Management
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Solution Overview
Problem
Traditional vehicle seating assemblies face challenges in optimizing size constraints, design requirements, and safety during collisions, while also needing to minimize material usage and reduce manufacturing and installation-related injuries.
Innovation Solution
A cushion pan for vehicle seating assemblies featuring a body portion with pockets, suspension assembly retainers, a peripheral flange with trim tabs, and rearwardly extending pivot arms, designed to provide controlled deformation in collisions, reduce sharp edges, and enhance passenger comfort and manufacturer safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional vehicle seating assemblies are constructed based on size constraints and design requirements, then the seat meets basic functional requirements, but the material usage is excessive and safety during collisions is insufficient
Solution Approach 1:
The cushion pan is divided into multiple functional zones including a headrest portion, seat portion, and backrest portion, each with optimized geometry and thickness. The headrest portion includes a recessed area that segments the structure to reduce material while maintaining collision safety. This segmentation allows each zone to be optimized independently for both material efficiency and protective function.
Solution Approach 2:
The patent optimizes geometric parameters such as the curvature radius of the headrest portion, the depth and shape of the recessed area, and the thickness distribution across different zones. By carefully controlling these parameters, the design achieves maximum protective effect with minimum material. The recessed area parameter specifically is tuned to manage collision forces effectively.
2Productivity
If traditional seat designs are used, then manufacturing is straightforward, but the manufacturing time is excessive and installation safety is compromised
Solution Approach 1:
The cushion pan is designed with pre-formed geometric features including rounded edges, recessed areas, and integrated attachment points that are built into the molding process. These preliminary actions eliminate the need for post-manufacturing operations such as edge rounding or additional safety feature installation, reducing manufacturing time and eliminating sharp edges that could injure workers during installation.
Solution Approach 2:
The cushion pan utilizes a thin-walled polymeric structure with optimized wall thickness distribution that maintains strength while minimizing material. The flexible yet durable polymer material allows for safe handling during installation while the integrated design eliminates sharp protrusions that could cause injury to manufacturers.
3Quantity of substance
If minimal material is used to create a robust seating arrangement, then material efficiency is improved, but the structural strength and collision protection may be compromised
Solution Approach 1:
The cushion pan employs local quality optimization where the wall thickness, curvature, and geometric complexity vary by zone. The headrest portion features a recessed area with specific curvature that provides enhanced collision protection locally, while other areas use optimized thinner walls. This local differentiation maintains overall structural strength for collision protection while minimizing total material usage through zone-specific optimization.
4Reliability
If the cushion pan includes integrated features such as recessed areas and rounded edges, then safety and comfort are improved, but the manufacturing complexity increases
Solution Approach 1:
The patent merges multiple safety and comfort features into a single integrated polymeric cushion pan structure. The recessed headrest area, rounded edges, smooth surfaces, and geometric contours are all combined into one molded component rather than separate parts. This merging reduces the number of assembly steps and manufacturing operations while maintaining all protective and comfort features, as the single-mold construction eliminates the need for additional assembly operations.
Data Source
AI summary
A cushion pan for a vehicle seating assembly includes a body portion having at least one pocket including a module retention aperture disposed therein. First and second suspension assembly retainers are disposed in the body portion. A peripheral flange extends substantially orthogonal to the planar extent of the body portion and includes a plurality of trim tabs. A plurality of support ribs extend through a midportion of the body portion.