Folded Seat Plenum Insert Assembly for Simpler Edge Sealing
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Solution Overview
Problem
Conventional methods for fabricating plenum inserts in comfort systems require multiple die-cut operations and complex layering processes, making them cumbersome and inefficient.
Innovation Solution
A simplified method using two layers, where the outer layer is folded over the inner spacer material and sealed along overlapping edges, potentially involving one or two cutting operations, to create a plenum insert with fewer steps and integrated sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods use at least three layers and three die-cut operations with sealing around all edges, then the plenum insert achieves complete sealing and structural integrity, but the fabrication process becomes complex and time-consuming
Solution Approach 1:
The patent combines multiple sealing operations into a single sealing step by folding the outer layer over the spacer layer and sealing only the exposed edges. This merging of operations reduces the number of die-cut steps from three to one or two, while maintaining complete sealing integrity through the folded construction that encloses the spacer layer within the sealed perimeter.
Solution Approach 2:
The patent implements a nested structure where the spacer layer is enclosed within the folded outer layer. The outer layer is folded over the spacer layer and sealed around the exposed edges, creating a nested configuration where the spacer is contained within the sealed outer layer perimeter. This nesting achieves complete sealing with fewer operations.
2Manufacturing precision
If conventional methods perform three separate die-cut operations on three layers, then each layer can be precisely shaped, but the manufacturing time and process steps increase significantly
Solution Approach 1:
The patent merges multiple cutting operations into a single die-cut step that cuts through the outer layer and spacer layer simultaneously after folding. This single cutting operation achieves precise shaping of the plenum insert while eliminating two separate die-cut steps, thereby increasing fabrication speed without sacrificing dimensional accuracy.
Solution Approach 2:
The patent performs the folding of the outer layer over the spacer layer before the final cutting operation. This preliminary folding action positions the layers in their final configuration, allowing a single subsequent cut to precisely define the shape of the completed plenum insert, thereby improving both precision and efficiency.
3Reliability
If conventional methods seal all edges of three separate layers, then complete enclosure is achieved, but the number of sealing operations and material usage increase
Solution Approach 1:
The patent nests the spacer layer within the folded outer layer, eliminating the need for separate sealing of the spacer layer edges. The outer layer is folded over the spacer and sealed only around the exposed edges, creating a complete enclosure with minimal sealing operations and reduced material consumption compared to sealing all edges of three separate layers.
Solution Approach 2:
The patent combines the sealing function into a single operation that seals the folded outer layer around the spacer. This merged sealing approach achieves complete enclosure of the spacer layer while reducing the number of sealing operations from multiple separate sealings to one continuous sealing process, thereby reducing material usage and operational complexity.
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
This method reduces fabrication complexity and time, while ensuring effective sealing and integration of components, resulting in a more efficient and streamlined production process for plenum inserts.
Implementation Method 1
the outer layer is folded over the inner spacer material and sealed along only the open, overlapping edges
Implementation Method 2
sealed along only the open, overlapping edges as one edge of the outer layer is folded over and thus an integral portion of the plenum
Data Source
AI summary
A method of fabricating a plenum insert for a vehicle seat includes the steps of providing an outer material layer having an edge, providing an inner spacer layer, placing the inner spacer layer material on the outer material layer, folding the outer material layer over the inner spacer layer such that the edge overlaps itself, and sealing the overlapping edge of the outer material layer to contain the spacer layer.