Seat Assembly Trim Wire Positioning via Cushion Apertures
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Solution Overview
Problem
Existing seat assemblies face challenges in maintaining the position of trim wires and ensuring consistent tension in the trim covers, leading to variations in appearance and potential assembly issues.
Innovation Solution
The seat assembly incorporates a cushion with through apertures and a recess in the second surface, where a trim wire is detachably connected via a coupling, allowing for snap fit connection and consistent positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If trim wire is traditionally attached to cushion, then assembly is simple, but position consistency and tension distribution are poor
Solution Approach 1:
The cushion is segmented by creating through-apertures that divide the cushion into regions, allowing the trim wire to be positioned at specific locations. The recess further segments the attachment area to concentrate the wire and maintain consistent positioning.
Solution Approach 2:
The recess acts as an intermediary structure between the trim wire and the cushion surface. It provides a dedicated attachment zone that mediates the connection, ensuring consistent tension distribution without requiring complex assembly mechanisms.
2Shape
If trim cover tension is increased to improve appearance, then aesthetic quality improves, but assembly variability increases
Solution Approach 1:
The recess creates a localized attachment zone with specific geometric properties (width, depth, orientation) that concentrate the trim wire and control tension distribution. This local structural quality ensures consistent appearance without requiring variable tension across different assemblies.
3Ease of manufacture
If traditional trim wire attachment is used, then manufacturing is simple, but recycling and reassembly are difficult
Solution Approach 1:
The through-apertures and recess are pre-formed in the cushion during manufacturing, creating prepared attachment points. This preliminary structuring enables both simple initial assembly and easy subsequent disassembly/recycling, as components can be detached and reattached without complex operations.
Data Source
AI summary
A seat assembly comprising a cushion including a first surface, a second surface, and a through aperture extending from the first surface to the second surface; a trim cover disposed on the first surface; a trim wire detachably connected to the second surface; and a coupling connecting the trim cover to the trim wire.