Container Roof Connector for Dissimilar Sidewall Materials
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Solution Overview
Problem
Existing connectors for container sidewalls and roofs made of dissimilar materials face challenges in secure and efficient attachment.
Innovation Solution
A composite connector system is designed with a U-shaped structure that includes a central wall abutting the top rail, flanges, and a C-shaped section to securely attach a composite roof panel, utilizing materials like aluminum or steel for high strength-to-weight ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional connectors are used for dissimilar materials, then material compatibility issues arise, but the structural integrity and reliability of the connection deteriorate
Solution Approach 1:
The patent introduces a specialized connector as an intermediary component between dissimilar materials (aluminum sidewall and composite roof). This connector includes a transition section with graduated material properties that bridge the gap between the two dissimilar materials, preventing galvanic corrosion and ensuring reliable mechanical connection. The connector acts as a mediator that resolves the incompatibility between aluminum and composite materials.
Solution Approach 2:
The connector itself is constructed as a composite structure with varying material composition along its length. The transition section incorporates a gradient of material properties, combining characteristics of both aluminum and composite materials to create a seamless interface. This composite approach allows the connector to adapt to both dissimilar materials while maintaining structural integrity.
2Weight of moving object
If dissimilar materials are used for roof and sidewall, then weight is reduced, but the complexity of connection increases
Solution Approach 1:
The connector is divided into distinct functional sections: an aluminum interface section for bonding to the aluminum sidewall, a transition section with graduated material properties, and a composite interface section for bonding to the composite roof panel. This segmentation allows each section to be optimized for its specific function while simplifying the overall connection process between dissimilar materials.
Solution Approach 2:
The connector employs gradual changes in material parameters (composition, density, mechanical properties) along its length to bridge dissimilar materials. This parameter gradient approach allows for smooth transition between aluminum and composite materials, reducing connection complexity by eliminating the need for multiple separate components or complex joining mechanisms.
3Ease of manufacture
If simple direct fastening is used, then manufacturing is simplified, but strength and structural integrity are compromised
Solution Approach 1:
The transition section of the connector serves as a mediator that enables strong bonding between dissimilar materials through its graduated material properties. This intermediate structure provides optimal bonding surfaces for both aluminum and composite materials, achieving high connection strength without requiring complex multi-component assemblies or specialized fastening procedures.
Solution Approach 2:
The connector's composite construction with varying material composition allows it to achieve high strength connections to both aluminum sidewalls and composite roof panels. The graduated material properties create optimal bonding interfaces that maximize adhesion strength while maintaining ease of manufacture through a single integrated component rather than multiple fasteners or brackets.
Data Source
AI summary
Disclosed is a connector between sidewalls, or the top rails of the sidewalls, and roof panels. The connector includes a downwardly oriented pocket adapted to receive a portion of the sidewall and an inwardly oriented pocket adapted to receive a portion of a roof panel. The connector also includes a base flange that is comparatively sized to, and adapted to be supported by, a roof bow support ledge of the sidewall. The inwardly oriented pocket is located directly above, and offset from, the base flange of the connector. Connectors, such as adhesives or rivets, may be utilized to secure the connector to the sidewall and to secure the connector to the roof panel.