Modular EPP Foam Vehicle Seat Back and Cushion Assembly
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Solution Overview
Problem
Contemporary vehicle seating assemblies face challenges in providing comfort and accommodating diverse passenger sizes and shapes while maintaining a lightweight and aesthetically appealing design, with existing modular designs being costly and complex to assemble.
Innovation Solution
A vehicle seating assembly featuring modular back and cushion assemblies with EPP-based foam cores and trim covers, utilizing a cushion frame assembly with interference fits and adjustable suspension systems to provide comfort and support, while allowing for modular assembly and styling flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If contemporary motor vehicle seating assemblies incorporate hundreds of discrete parts to provide comfort features and accommodate diverse passenger sizes, then comfort and adaptability are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The seating assembly is divided into modular subassemblies (seat cushion assembly, seat back assembly, headrest assembly) that can be independently manufactured and assembled. Each module contains its own cushion components and structural elements, allowing for standardized interfaces that reduce overall system complexity while maintaining adaptability through modular reconfiguration.
Solution Approach 2:
The modular subassemblies are designed with universal interfaces and standardized connection mechanisms that allow the same basic modules to serve multiple seating configurations and accommodate different passenger sizes. The adjustable components within each module provide multi-functionality without requiring entirely separate assemblies for different applications.
2Productivity
If modular subassemblies are sourced from locations independent of the final JIT assembly plant to reduce final assembly costs, then manufacturing efficiency is improved, but logistics and supply chain complexity increase
Solution Approach 1:
The seating assembly is segmented into distinct modular subassemblies that can be manufactured at different locations and independently sourced. Each module is designed with standardized interfaces that simplify the final JIT assembly process, allowing remote manufacturing facilities to produce components that integrate seamlessly into the final assembly without requiring complex coordination.
3Adaptability or versatility
If lightweight materials and modular designs are used to reduce weight and improve aesthetics, then adaptability and appearance are improved, but structural strength and durability may be compromised
Solution Approach 1:
The seating assembly utilizes composite material constructions within the modular subassemblies, combining lightweight materials with strategically placed structural reinforcement elements. The cushion assemblies incorporate layered constructions with different material properties that provide both weight reduction and structural support, while the modular frames use optimized material distributions that maintain strength-to-weight ratios.
Solution Approach 2:
Different regions of the modular subassemblies use materials with different properties optimized for their specific functions. High-strength materials are concentrated in load-bearing areas and connection points, while lightweight materials are used in non-critical regions, achieving overall weight reduction without compromising structural integrity where needed.
Data Source
AI summary
A vehicle seating assembly for a motor vehicle has a lower seat and a seat back extending upwardly from the lower seat, and includes a cushion frame assembly having a lower seat cushion frame and a seat back cushion frame. A lower seat cushion module is mounted to the lower seat cushion frame of the cushion frame assembly, the lower seat cushion module comprising an EPP-based lower seat foam core and a lower seat trim cover fitted about an external surface of at least a portion of the foam core. A seat back cushion module is mounted to the seat back cushion frame of the cushion frame assembly, the seat back cushion module comprising an EPP-based seat back foam core and a seat back trim cover fitted about an external surface of at least a portion of the foam core.