Trailer Sidewall Construction Using Overlapping Composite Panels
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Solution Overview
Problem
Trailers and cargo containers face challenges in maximizing interior space while maintaining lateral and vertical strength, impact resistance, and minimizing damage from cargo shifts and loading/unloading processes, with existing designs often compromising on thinness and smoothness due to protrusions and obstructions.
Innovation Solution
The use of partially overlapping composite side panels with vertically oriented posts, where each pair of panels forms a recess to house the posts, allowing for a thin, damage-resistant sidewall with a smooth interior surface, and providing structural support and mounting points for cargo restraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the sidewall panels are made thinner to maximize interior cargo space, then the available cargo volume increases, but the lateral strength and impact resistance of the sidewall deteriorates
Solution Approach 1:
The sidewall is divided into multiple discrete panels that overlap at their edges. Each panel is thinner individually, but the overlapping joints create a composite structure that achieves the required lateral strength while maintaining maximum interior volume. The segmentation allows for both thin panels and strong overall structure.
Solution Approach 2:
The sidewall panels are constructed as composite structures combining multiple materials (metal facings laminated onto plastic or other materials) to achieve optimal strength-to-weight ratio. This allows the panels to be thin enough to maximize cargo space while remaining strong enough to provide lateral strength and impact resistance.
2Ease of manufacture
If traditional panel joining methods are used without recesses, then the manufacturing process is simpler, but protrusions and obstructions are created that can damage cargo during loading and unloading
Solution Approach 1:
The posts are nested within recesses formed by the overlapping panel joints. This nesting eliminates protrusions that would otherwise extend into the cargo space, preventing cargo damage during loading and unloading operations while maintaining a smooth interior surface.
Solution Approach 2:
The posts are extracted from the exterior and positioned within the recesses created by the panel overlap geometry. This extraction removes the harmful protruding elements from the cargo pathway while preserving the structural function of the posts for cargo restraint.
3Adaptability or versatility
If mounting points for cargo restraints are added to the interior sidewall, then cargo restraint capability improves, but the smooth interior surface is compromised and cargo damage risk increases
Solution Approach 1:
The mounting points (posts) are nested within the panel recesses, allowing cargo restraint functionality to be integrated into the sidewall structure without creating external protrusions. The posts remain accessible for attaching cargo restraints while maintaining a smooth interior surface that prevents cargo damage.
Data Source
AI summary
A sidewall construction arrangement for a trailer includes a plurality of upstanding panels. Each panel includes two opposing flanges. The flanges are disposed on opposing lateral edges of the panel. Adjacent flanges of two adjacent panels partially overlap each other. Each of a plurality of vertically oriented logistics posts includes two lateral margins. A first of the margins is attached to a respective first of the flanges of the two partially overlapping panels. A second of the margins of the post is attached to each of the first and second flanges of the two partially overlapping panels.