Contoured Mobile Phone Casing with Variable Wall Thickness
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Solution Overview
Problem
Mobile phones have become extremely fragile due to their compact and lightweight design, compromising durability and ergonomics while maintaining portability.
Innovation Solution
A ruggedized mobile phone design featuring a contoured casing with variable wall thickness, rounded corners, and additional screws for secure attachment, along with a gasket for sealing, and interchangeable attachment points for enhanced durability and ergonomic handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If mobile phones are made compact and lightweight for portability, then ease of handling and storage is improved, but durability and ruggedness deteriorate
Solution Approach 1:
The patent applies local quality by implementing variable wall thickness in the phone casing, with thicker regions at corners and edges for impact resistance, and thinner regions in flat areas for weight reduction. This allows different parts of the same component to have different structural properties optimized for their specific functional requirements.
Solution Approach 2:
The patent employs composite materials by combining multiple materials with different properties in the phone construction. The casing uses materials with varying densities and strength characteristics in different zones, creating a composite structure that balances weight and durability requirements across different regions of the device.
2Volume of moving object
If mobile phones are made compact for portability, then ease of storage is improved, but impact resistance deteriorates
Solution Approach 1:
The patent implements local quality through strategically placed thickened regions at high-stress areas such as corners and edges, while maintaining thinner walls in less vulnerable areas. This localized reinforcement provides impact resistance where needed without uniformly increasing the overall device volume.
Solution Approach 2:
The patent applies spheroidality by rounding corners and edges of the phone casing rather than using sharp angles. This curvature distributes impact forces more effectively across the surface, improving impact resistance while maintaining a compact overall form factor.
3Weight of moving object
If mobile phones are made lightweight for portability, then ease of handling is improved, but structural strength deteriorates
Solution Approach 1:
The patent applies local quality by concentrating structural reinforcement only in critical areas such as corners, edges, and mounting points, while using lighter materials and thinner walls in non-critical areas. This selective reinforcement maintains overall structural strength without uniformly increasing weight.
Solution Approach 2:
The patent employs segmentation by dividing the phone casing into multiple sections with different thicknesses and material properties. This segmented approach allows optimized weight distribution while maintaining structural integrity through strategically placed reinforcement zones.
4Reliability
If mobile phones are ruggedized for durability, then impact resistance is improved, but ease of manufacture deteriorates
Solution Approach 1:
The patent applies local quality through variable wall thickness design that can be implemented using standard injection molding techniques with programmable cavity designs. This allows complex geometries to be manufactured in single-shot processes, reducing assembly steps while achieving the desired durability characteristics.
Data Source
AI summary
A mobile phone body for enclosing one or more mobile phone components is disclosed. The mobile phone body may include a face, a back side, and two lateral sides. The face may include a screen. The screen may be a touch screen. The back side may be contoured.


