Container Top Rail Impact Resistance via Internal Support
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Solution Overview
Problem
Conventional top rail designs for container bodies are susceptible to damage from impacts, such as tree branch strikes, which can compromise the structural integrity of the truck's container body and lead to water leakage and increased maintenance costs for rental truck companies.
Innovation Solution
Incorporating a support structure, such as a support block or rail, within the top rail's cavity channel to enhance the damage resistance of the top lip and integrating low-profile LED lights positioned below the bottom lip or within the support structure to protect against impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional top rail design is used, then the structure is simple and easy to manufacture, but it is susceptible to damage from impacts such as tree branch strikes
Solution Approach 1:
The top rail is divided into multiple functional segments: the top lip for roof attachment, the cavity channel for housing support structures and lights, the bottom lip for sidewall attachment, and the bottom wall for additional support. This segmentation allows each component to be optimized for its specific function while working together to provide enhanced damage resistance.
Solution Approach 2:
A support structure is nested within the cavity channel of the top rail, creating a reinforced internal framework that strengthens the top lip against impact forces. This nested configuration provides structural reinforcement without significantly increasing the external dimensions or complexity of the overall assembly.
2Reliability
If the top lip is made more robust to resist impact, then damage resistance improves, but the weight of the top rail increases
Solution Approach 1:
The support structure is strategically positioned within the cavity channel to provide localized reinforcement at the top lip, the most vulnerable area to impact forces. This targeted approach strengthens the critical impact-resistant areas without requiring the entire top rail to be made heavier, thus improving impact resistance while minimizing weight increase.
3Illumination intensity
If marker lights are affixed to the channel wall inside the cavity channel, then illumination is provided, but the lights are vulnerable to shearing damage from impacts
Solution Approach 1:
The support structure serves as an intermediary protective element between the impact source and the marker lights. When an impact occurs, the support structure absorbs and deflects the force, protecting the lights mounted on its surface or within the cavity channel from direct exposure to shearing forces.
Solution Approach 2:
The support structure is installed in advance within the cavity channel to provide a protective cushioning effect. This pre-installed reinforcement structure absorbs impact energies before they can reach and damage the marker lights, thereby protecting the illumination system from impact-related failures.
Data Source
AI summary
Various embodiments of an improved top rail for a container body, e.g. a truck body, are disclosed. In exemplary embodiments, a support structure is disposed at least partially within a channel of the top rail to provide increased strength to the top rail and to protect the top rail and container body from damage. Examples of support structures include support blocks, such as composite blocks, and support rails, such as metal rails. In an exemplary embodiment, a low-profile light source can be installed on the top rail and/or the support structure.