Interlocking Lid and Box for Secure Packaging Handling
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Solution Overview
Problem
Display boxes are difficult to handle due to the risk of the lid detaching during handling, requiring manual labor or complex machinery, which increases costs.
Innovation Solution
The implementation of interlocking elements between the lid and box, featuring through holes in the box and protrusions on the lid, allowing secure attachment and detachment without adhesives, enabling easy handling and use of suction-based box handling machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lid is made detachable for display purposes, then the ease of operation is improved, but the reliability deteriorates due to risk of accidental detachment during handling
Solution Approach 1:
The lid is divided into multiple detachable parts (front wall portion, back wall portion, and connecting portions) that can be separated from the box through score lines, allowing the lid to be partially or fully removed for display while maintaining structural integrity during handling through the interlocking mechanism
Solution Approach 2:
The lid portions are designed to nest within or alongside the box structure when attached, with the front and back wall portions fitting into the box opening while the connecting portions extend along the side walls, creating a compact integrated form that prevents accidental detachment
2Reliability
If traditional fastening means are used, then the reliability is improved, but the device complexity increases due to multiple tabs and windows
Solution Approach 1:
The complex fastening system with multiple tabs and windows is extracted and replaced by a single interlocking mechanism formed by score lines that create flexible connecting portions, simplifying the overall structure while maintaining secure attachment through the interlocking geometry of the lid and box edges
Solution Approach 2:
Instead of using protruding tabs that fit into windows, the invention uses recessed score line formations that create interlocking portions, inverting the traditional approach to achieve secure fastening through the complementary geometry of the lid and box edges rather than through protruding elements
3Reliability
If manual handling is used to prevent detachment, then the reliability is improved, but the productivity deteriorates due to increased labor requirements
Solution Approach 1:
The lid and box are designed with self-interlocking features where the connecting portions automatically engage with the box edges through the score line formations, allowing the packaging to secure itself without requiring manual intervention or specialized handling equipment, thereby improving productivity while maintaining reliability
Data Source
Figure 1A~2
Figure 1B
Figure 3~4
AI summary
The invention relates to a display box (10) and a lid (20), wherein the box and the lid comprise mutually interlocking elements (30) for interlocking the lid and the box. The invention also relates to blanks (40, 50) for folding the box and lid form, and to a method of handling at least one product.