Rotatable Hook Member for Knockdown Container Fastening
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Solution Overview
Problem
Conventional knockdown containers face issues with wear and tear in their fastening mechanisms, leading to accidental disengagement and high production costs due to complex pallet structures and the need for entire pallet replacement when the fastening mechanism fails.
Innovation Solution
A knockdown container design featuring a rotatable hook member attached to the sleeve, which is retained in a receptacle within the pallet, allowing for reliable fastening without bending stress and enabling easy replacement of the hook member when worn out.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rod claw is used as a fastening mechanism between the pallet and sleeve, then the sleeve and pallet can be fastened together, but the constricted part of the transfer passage wears out over time leading to accidental disengagement
Solution Approach 1:
The fastening mechanism is segmented into separable components: the hook member attached to the sleeve and the receptacle portion in the pallet. This allows the hook member to be replaced independently when worn, without replacing the entire pallet, thus extending the service life of the fastening mechanism while maintaining reliability.
Solution Approach 2:
The rod claw is replaced with a rotatable hook member that can dynamically adjust its position. The hook member rotates around an axis to engage with the receptacle portion, providing a more reliable fastening connection that better withstands wear and impact forces compared to the linear sliding rod claw.
2Ease of manufacture
If the transfer passage is integrally formed with the pallet, then the pallet structure is simplified, but the whole pallet must be replaced when the constricted part wears out
Solution Approach 1:
The fastening system is divided into the pallet with its integrally formed receptacle portion and the separate hook member attached to the sleeve. This segmentation allows the hook member to be replaced independently when worn, improving ease of repair without complicating the pallet's integral structure.
Solution Approach 2:
The hook member is designed as a replaceable component that can be easily replaced when worn out, rather than replacing the entire expensive pallet. This follows the principle of using cheaper, shorter-lived components that can be independently replaced to extend the life of the overall system.
3Device complexity
If the rod claw is disposed inside the pallet with complex structure, then the fastening mechanism can be implemented, but the mold design becomes complex with undercuts increasing production costs
Solution Approach 1:
The hook member is extracted from the pallet structure and attached to the sleeve instead. This removes the complex internal structure requirement from the pallet, allowing for simpler mold design and reduced production costs, while the fastening function is maintained through the external hook member.
4Ease of operation
If the rod claw moves linearly and enters the receptacle of the sleeve, then the fastening mechanism functions, but the rod claw is subjected to bending stress making it difficult to insert after impact
Solution Approach 1:
The linearly moving rod claw is replaced with a rotatable hook member that engages with the receptacle portion through rotation rather than linear insertion. This dynamic motion reduces bending stress on the hook member during operation and after impact, maintaining ease of fastening while improving strength and reliability.
Data Source
AI summary
A knockdown container A having a hook member 4 attached to the sleeve 2 such as to be rotatable in a plane parallel to the surface of the sleeve 2, and a receptacle portion 12 formed in the pallet 1 to retain the hook member 4. Alternatively, a knockdown container A having a hook member 4 attached to the sleeve 2 such that it is accommodated in a cut-out portion 21 formed in the sleeve 2.