Multi-Axis Hinge for Shipping Container Doors
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Solution Overview
Problem
Existing shipping container hinges often weaken the structure and are inefficient, as drop-down doors can fail, causing damage or obstruction, and complex locking features hinder loading and unloading processes.
Innovation Solution
A multi-axis hinge system that allows a door to rotate around multiple axes, featuring a fixed axis body in rotational engagement with an articulating body, including a door engagement member for sliding and rotational engagement, enabling the door to transition between secured and unsecured states for enhanced loading and unloading capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a drop down door is added to facilitate loading, then loading efficiency is improved, but structural strength deteriorates due to creating a point of failure
Solution Approach 1:
The door is designed to be dynamic rather than static, capable of multiple positions (closed, partially open, fully open) through multi-axis rotation. This allows the door to adapt to different loading scenarios while maintaining structural integrity when closed and providing full access when open.
Solution Approach 2:
The hinge system is segmented into multiple rotational axes, allowing independent control of different door movements. This segmentation enables the door to achieve complex motions (dropping down, rotating outward, folding back) while distributing mechanical stresses across multiple joints rather than a single failure point.
2Reliability
If complex locking features are added to secure the door, then security is improved, but ease of operation deteriorates and loading efficiency is reduced
Solution Approach 1:
The door system utilizes its own weight and the mechanical advantage of the multi-axis hinge to automatically secure itself in the closed position and to facilitate opening. The gravity-assisted closing and the ergonomic handle design allow workers to operate the door with minimal effort, eliminating the need for complex manual locking mechanisms.
Solution Approach 2:
The locking mechanism is dynamic rather than static, using the door's position and movement to engage and disengage security features. The multi-axis hinge allows the door to transition smoothly between secured and open states without requiring complex locking operations.
3Reliability
If locking features are added to secure the door, then security is improved, but the door geometry is altered preventing full opening
Solution Approach 1:
The hinge system adds dimensional complexity by introducing multiple rotational axes, allowing the door to move through three-dimensional space rather than simple planar rotation. This enables the door to achieve full opening while maintaining security features that do not interfere with the extended range of motion.
4Ease of manufacture
If a simple hinge is used for the door, then ease of manufacture is improved, but reliability deteriorates due to single-axis rotation limitations
Solution Approach 1:
The hinge is segmented into multiple independent rotational joints, each handling a specific axis of motion. This segmentation improves reliability by distributing mechanical loads across multiple bearings and pins, reducing the risk of single-point failure while maintaining manufacturability through modular assembly.
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
The multi-axis hinge system provides secure closure and efficient opening of the door, allowing for full access to the container while maintaining structural integrity, facilitating safe and efficient loading and unloading operations.
Implementation Method 1
a multi-axis hinge (140) comprising a fixed axis body (142) in rotational engagement with an articulating body (144) around a hinge rotational axis (146)
Implementation Method 2
the articulating body (144) of the multi-axis hinge (140) further comprises a door engagement member (170) that is in rotational and sliding engagement with a sliding engagement member (186) of the door (130)
Data Source
Figure 1
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AI summary
According to the embodiments provided herein, a multi-axis hinge can include a fixed axis body and an articulating body. The fixed axis body and the articulating body can be in rotational engagement and can be configured to rotate with respect to one another around a hinge rotational axis. The fixed axis body can include a first pillar and a second pillar that extends away from the hinge rotational axis. The first pillar and the second pillar can each include a panel engagement member. The articulating body can include a first articulating pillar and a second articulating pillar that extends away from the hinge rotational axis. The first articulating pillar and the second articulating pillar can each include a door engagement member.