Carton Handle With Hinged Flaps For Load Distribution
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Solution Overview
Problem
Existing carton handle designs are uncomfortable due to load-bearing edges that concentrate stress, failing to adequately address both vertical and horizontal forces applied during carrying, pushing, or sliding.
Innovation Solution
A handle design with apertures and hingedly connected flaps that cushion the load-bearing edge, allowing for comfortable engagement of both vertical and horizontal forces by distributing pressure across the top and side edges of the hand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple handle design with a cut line is used, then the handle is easy to manufacture, but the load-bearing edge is uncomfortable when pressed against a user's hand
Solution Approach 1:
The handle is segmented into multiple flaps (first flap, second flap, third flap, fourth flap) that can be independently folded and positioned. Each flap can be independently engaged by the user's fingers, distributing the load across multiple contact points rather than a single edge, thereby improving comfort while maintaining manufacturing simplicity through modular construction
Solution Approach 2:
The handle transitions from a two-dimensional cut line to a three-dimensional structure with flaps extending in multiple directions. The flaps can be folded at various angles to create a multi-layered cushioning effect, adding depth and volume to the handle structure to improve comfort without significantly increasing manufacturing complexity
2Ease of operation
If a handle with cushioning flaps is used, then the load-bearing edge comfort is improved, but the handle structure becomes more complex
Solution Approach 1:
Multiple flaps are merged into a single integrated handle structure that functions as a unified cushioning system. The flaps work together to distribute loads across multiple contact points, creating a composite cushioning effect that achieves superior comfort without requiring multiple separate components, thereby limiting the increase in structural complexity
3Ease of operation
If the handle flaps are designed to fold as a unit, then the cushioning effect is enhanced, but the manufacturing precision requirements increase
Solution Approach 1:
The flaps are pre-configured with fold lines and hinge connections that enable them to automatically align and fold together as a unit during handle engagement. This pre-planned cushioning mechanism ensures that the flaps work in unison to distribute loads effectively, while the standardized fold line design minimizes the precision requirements by allowing for natural self-alignment during the folding process
Data Source
AI summary
A carton has composite wall which includes a handle that has a handle opening. The handle opening is defined at least in part by a load bearing edge. The load bearing edge includes a first segment to which a first handle flap is hingedly connected along a first fold line, and second and third segments to which second and third handle flaps are hingedly connected along second and third fold lines respectively. The first handle flap is formed from the outer layer. The second and third handle flaps are formed from the inner layer. The second and third fold lines are spaced apart from each other with a free edge of the inner layer extending between the second and third fold lines.