Carton Panel Interlocking with Divergent Hinged Tabs
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Solution Overview
Problem
Existing panel interlocking mechanisms for packaging, such as cartons, often require heavier materials and less flexible positioning of locking mechanisms, which can be costly and environmentally unfriendly, and do not efficiently utilize lighter weight materials like paperboard and plastics.
Innovation Solution
The use of divergently angled male and female tabs hinged to the panels, where the fold lines are oriented at non-zero angular relationships, allowing for secure interlocking without the need for heavy materials, enabling more flexible positioning and efficient use of lighter materials like paperboard and plastics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional punch-lock interlocking mechanisms are used, then reliable panel connection is achieved, but heavier materials are required and positioning flexibility is reduced
Solution Approach 1:
The locking mechanism transitions from a static rigid structure to a dynamic hinged system. The male tabs are hinged to the first panel and the female tabs are hinged to the second panel, allowing the tabs to flex and adapt during the locking process. This dynamic behavior enables the mechanism to work with lighter materials while maintaining interlocking strength, resolving the contradiction between strength and adaptability.
Solution Approach 2:
The invention changes the geometric parameters of the locking mechanism by introducing divergent fold lines at specific angles (e.g., 45 degrees) relative to the panel edges. This parameter change allows the tabs to achieve mechanical advantage through angular geometry, providing strong interlocking with lighter materials and enabling flexible positioning without compromising strength.
2Weight of moving object
If lighter weight materials like paperboard and plastics are used, then cost and environmental impact are improved, but interlocking reliability may be compromised
Solution Approach 1:
The hinged tabs provide dynamic flexibility that compensates for the lower inherent strength of lightweight materials like paperboard and plastics. The hinges allow the tabs to flex during engagement and maintain reliable interlocking through controlled movement, ensuring that interlocking reliability is maintained even with reduced material weight.
Solution Approach 2:
By optimizing the fold line angles and tab geometries, the invention extracts maximum mechanical advantage from the lightweight materials. The divergent fold lines create leverage that enhances the holding power of the tabs, allowing reliable interlocking with minimal material usage, thus improving both weight efficiency and interlocking reliability.
3Adaptability or versatility
If more flexible positioning of locking mechanisms is implemented, then manufacturing adaptability is improved, but structural complexity increases
Solution Approach 1:
The locking mechanism is segmented into separate hinged male tabs and female tabs that can be independently positioned and configured. This segmentation allows each tab to be optimally positioned for different panel configurations without increasing overall complexity, as each segment operates independently through its own hinge mechanism.
Solution Approach 2:
The hinged tab design serves multiple functions: it provides the locking action, accommodates positioning flexibility, and adapts to different panel configurations. This multi-functionality reduces the need for additional components or complex mechanisms, achieving positioning flexibility without proportionally increasing device complexity.
Data Source
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AI summary
An arrangement for locking together two panels (50,60) the arrangement comprising a first and second male tabs (39a, 39b) and a first and second female tabs (43) wherein the first and second male tabs are hinged to a first panel by a first and second hinged connection (41) respectively, and the first female tabs are hinged to a second panel by a third hinged connection the first and second hinged connections being divergent with respect to one another.