Container Corner Casting Locking Structure to Reduce Aperture Deformation
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Solution Overview
Problem
Conventional container securing devices cause convex deformation at the center region of the aperture portion, leading to reduced strength and potential failure of the corner casting due to uneven load distribution.
Innovation Solution
The design includes a movable protrusion with contact portions that are positioned to bear load at the ends of the aperture portion, rather than the center, reducing deformation and enhancing the structural integrity of the corner casting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the movable protrusion is positioned at the center of the lower support pillar, then the securing device structure is simple, but the aperture portion experiences convex deformation and reduced strength
Solution Approach 1:
The contact portions are positioned at specific locations (longitudinal end regions) of the aperture portion rather than uniformly distributed, creating localized load bearing areas with different functional qualities. This concentrates the load transfer to regions that can better withstand the forces without deforming, while other regions maintain their structural integrity.
2Force
If the movable protrusion contacts the longitudinal center region of the aperture portion, then the load transfer path is direct, but convex deformation occurs at the aperture portion
Solution Approach 1:
Instead of having the movable protrusion contact the aperture portion at its center (conventional approach), the contact portions are inverted to contact the longitudinal end regions. This reverses the load transfer path from the center to the ends, preventing the convex deformation that occurs when load is applied at the center while still maintaining effective force transfer.
3Reliability
If the aperture portion has a long-hole shape, then the fitting portion can be securely engaged, but the longitudinal center region is vulnerable to convex deformation
Solution Approach 1:
The solution applies local quality by creating specific contact portions at the longitudinal end regions of the aperture portion. These localized areas are designed to bear the load, while the vulnerable center region is excluded from load bearing. This differentiated quality distribution across the aperture portion simultaneously maintains secure engagement and prevents deformation.
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
This configuration effectively distributes the load to the ends of the aperture portion, minimizing convex deformation and preventing failure of the corner casting, thereby improving the reliability and durability of the container securing device.
Implementation Method 1
the movable protrusion is urged to protrude laterally from a vertical surface of the support pillar by an elastic force of an elastic member
Data Source
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AI summary
There is provided a container securing device is capable of reducing deformation of an aperture portion in a corner casting. The container securing device includes: a flange 2 to be located on an outer side of a groove hole of a corner casting of a container; a support pillar 4 provided in the flange 2 to fit in a long-hole shaped aperture portion of the groove hole; a lower cone (fitting portion) 41 provided in the support pillar 4 to fit in a hollow of the groove hole; and a movable protrusion 43 which is pivotable and urged to protrude laterally from a vertical surface of the support pillar 4. The movable protrusion 43 has contact portions 43b which do not make contact with a longitudinal center region of the long-hole shaped aperture portion but makes contact with two longitudinal end regions thereof.