Mobile Device Protective Cover with Interlocking Rigid and Pliable Bodies
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Solution Overview
Problem
Existing protective covers for mobile devices often fail due to pliable portions detaching from rigid portions, breakage at deflection points, and fracturing when dropped, indicating a need for improved impact absorption and structural coupling.
Innovation Solution
A protective cover design featuring reinforced crush structures with pliable and rigid crush ribs, cutout portions, and mechanical interlocking features that couple the rigid and pliable bodies along all three axes, ensuring they remain connected during impact and preventing unintentional decoupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If pliable and rigid portions are coupled in existing protective covers, then impact absorption is improved, but the components detach over time
Solution Approach 1:
The protective cover is divided into distinct pliable and rigid portions that are separately optimized for their functions, with the pliable portion providing impact absorption and the rigid portion providing structural support, while mechanical interlocking features ensure they remain coupled
Solution Approach 2:
The pliable and rigid portions are nested together with the pliable portion surrounding or integrating with the rigid portion, creating a layered protective structure where both components work together while maintaining their individual properties
Solution Approach 3:
Mechanical interlocking features such as tabs, slots, or snap-fit elements are built into the design beforehand to prevent detachment before it occurs, ensuring the pliable and rigid portions remain coupled throughout the product lifecycle
2Strength
If rigid portions are used in protective covers, then structural support is improved, but breakage occurs at deflection points
Solution Approach 1:
The rigid portion incorporates localized features such as cutout portions, recesses, or varying thickness areas that allow controlled deflection at specific locations while maintaining overall structural integrity, preventing stress concentration that leads to breakage
Solution Approach 2:
The protective cover uses a composite structure combining rigid and pliable materials, where the rigid portion provides structural support and the pliable portion absorbs impact energy, creating a composite system that leverages the advantages of both material types
3Strength
If reinforced crush structures are added, then impact distribution is improved, but device complexity increases
Solution Approach 1:
The crush structures incorporate curved or rounded features such as curved crush ribs or arched support elements that naturally distribute impact forces through geometric shape rather than requiring complex internal reinforcement, simplifying the overall structure while maintaining impact distribution capability
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 effectively absorbs and distributes impact forces, reducing the likelihood of cracking and breakage by ensuring the pliable and rigid components work together to protect the mobile device from both low-energy and high-energy impacts.
Implementation Method 1
the pliable body can be deformed to absorb forces associated with the impact
Implementation Method 2
provides improved deflection of a portion of the rigid body to enable the protective cover to receive or release the mobile device
Data Source
AI summary
A protective cover for a mobile device includes reinforced crush structures along peripheral sides of the protective cover that absorb or deflect forces that may otherwise damage the mobile device. Further, the protective cover includes cutout portions along peripheral sides of a rigid body of the protective cover that provides improved deflection of a portion of the rigid body to enable the protective cover to receive or release the mobile device and can also provide flexibility for the rigid body along the corners if dropped. In one aspect, a pliable body can be formed around the rigid body and includes various structural features that mechanically couple with one another along all three axes in 3-D space to reduce the chance of unintentional decoupling.