Container Door Restraint Mechanism for Weight Reduction
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Solution Overview
Problem
Existing logistics containers face challenges in achieving a balance between robustness, usability, and lightness, particularly in reducing carbon footprint, as they need to withstand repetitive abuse while minimizing weight.
Innovation Solution
The introduction of a novel container design featuring a translation restraint mechanism and a releasable rotation restraint mechanism for securing the door, allowing the use of heavy-duty materials for sturdy elements and lightweight materials for other parts, maintaining robustness and usability while keeping the container lightweight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If heavy-duty materials are used for all parts of the container to ensure robustness, then the container can withstand repetitive abuse, but the overall weight increases
Solution Approach 1:
The patent applies different material qualities to different parts of the container: heavy-duty materials are used specifically for the restraint mechanism components that must withstand forces (locking elements, restraint arms), while lighter materials are used for non-critical parts like the container body and door panels. This localized application of strength where needed resolves the contradiction between overall robustness and total weight.
Solution Approach 2:
The restraint mechanism is divided into separate functional components: translation restraint elements that prevent lateral movement, rotation restraint elements that prevent door swing, and locking elements. Each segment is optimized with appropriate material strength only where necessary, allowing the overall system to be robust while keeping individual component weights minimized.
2Device complexity
If a single restraint mechanism is used to secure the door, then the structure is simpler, but it cannot effectively restrain both translation and rotation movements
Solution Approach 1:
The restraint mechanism is segmented into two distinct functional subsystems: a translation restraint mechanism with counterparts that prevent lateral movement of the door, and a rotation restraint mechanism with counterparts that prevent rotational movement. This segmentation allows each subsystem to be optimized for its specific function while working together to provide comprehensive door securing.
Solution Approach 2:
The restraint mechanism is designed as an integrated system where the same basic component structure serves multiple functions: the locking elements can engage in different positions to provide both translation restraint and rotation restraint, and the restraint arms can function in both mechanisms. This multi-functionality reduces overall complexity compared to having completely separate mechanisms.
Data Source
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AI summary
A novel container (1000) is proposed featuring two restraint mechanisms for securing the door (100) to the enclosure (200). Firstly, a translation restraint mechanism (115, 215) has a first counterpart (115) provided to an extension (113) of the door (100) and another cooperating counterpart (215) provided to the enclosure (200). The translation restraint mechanism (115, 215) prevents the extension (113) of the door (100) from moving in a direction perpendicular to the articulation axis of the extension (113). Secondly, a releasable rotation restraint mechanism (140) engages the extension (113) of the door (100) prevents the rotation of the extension (113) about the articulation axis.