Expandable Foam Corner Protector With Continuous Width Fit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing foam corner protectors for packaging have preset increments of expansion, failing to securely fit a variety of corner widths and provide adequate protection, and require external force to collapse onto objects.
Innovation Solution
An expandable foam plank with arc-shaped cuts and bracketing portions that allow for continuous expansion and contraction, biased towards the unexpanded state, providing a compressive force on objects without locked-in widths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If preset increments of expansion are used in foam corner protectors, then the structure is simple and easy to manufacture, but the corner protector can only securely fit a select few corner widths and fails to provide adequate protection
Solution Approach 1:
The foam plank is segmented with a series of cuts extending from one longitudinal edge to the other, creating multiple expandable sections. This segmentation allows the corner protector to expand in continuous increments rather than preset fixed widths, enabling it to adapt to various corner widths while maintaining ease of manufacture through a systematic cutting pattern
Solution Approach 2:
The corner protector transitions from a static preset width design to a dynamic expandable structure. The foam plank can be expanded to different widths by applying force to separate the segments created by the cuts, allowing continuous adjustment to match different corner dimensions while maintaining structural integrity
2Ease of operation
If locked-in widths are used in adjustable corner protectors, then the expansion increments are preset and easy to control, but the corner protector requires external force to collapse onto objects and fails to provide compressive force
Solution Approach 1:
Instead of requiring external force to collapse the corner protector onto the object, the design inverts the force requirement by having the corner protector naturally spring back to its unexpanded state. The foam material's elastic recovery provides the compressive force needed to secure the object, eliminating the need for additional collapsing force while maintaining ease of operation
3Manufacturing precision
If the corner protector is designed to securely fit specific corner widths, then the fit is precise for those widths, but it fails to provide adequate protection to the actual corner since the corner is not physically covered
Solution Approach 1:
The corner protector is designed to wrap around and enclose the corner of the object, with the foam material forming a protective shell that physically covers the corner. The expandable sections nest around the corner geometry, providing comprehensive protection while maintaining precise fit through the segmented structure that adapts to the corner's dimensions
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
The solution enables nearly unlimited width adjustments and continuous bias towards the unexpanded state, securely fitting various corner widths and providing comprehensive protection.
Implementation Method 1
an interior channel portion including a plurality of arc-shaped cuts extending through the thickness of the expandable foam plank, in which at least a portion of the arc-shaped cuts are aligned along the X-direction and are free to expand to form expanded openings along the Y-direction in response to an external force applied to the expandable foam plank along the Y-direction
Data Source
AI summary
An expandable foam corner protector is provided. The expandable foam corner protector includes (i) a first L-shaped bracketing portion; (ii) a second L-shaped bracketing portion; and (iii) an interior channel portion, which is located between the bracketing portions, including a plurality of arc-shaped cuts extending through a thickness in a Z-direction of the interior channel portion. At least a portion of the arc-shaped cuts are aligned along a X-direction and are free to expand to form expanded openings along a Y-direction in response to an external force applied to the interior channel portion along the Y-direction. The interior channel portion is configured to define a generally right angle configured to overlie a corner of an inanimate object, and wherein the first L-shaped bracketing portion, the second L-shaped bracketing portion, and the interior portion define a U-shaped channel including the generally right angle of the interior channel portion.