Interlocking Shock-Absorbing Bumpers for Mobile Device Cases
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Solution Overview
Problem
Existing protective covers for mobile devices do not efficiently absorb impact energy, potentially damaging internal components due to rebound forces from elastic materials, and lack a quick disassembly feature for integrity checks, while also failing to provide a compact and aesthetically pleasing design.
Innovation Solution
A protective case with a rigid chassis and interlocking shock-absorbing bumpers that efficiently absorb impact energy, featuring a reversible and quick assembly design, allowing for the use of incompatible materials and a flexible outer layer to enhance ergonomics and appearance, while reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If elastic materials are used to soften impacts, then the protective cover can absorb impact energy, but rebound forces are generated and transmitted to internal components causing damage
Solution Approach 1:
The patent changes the material parameter from elastic to viscous/dilatant, fundamentally altering the energy absorption mechanism. Viscous materials absorb energy through irreversible deformation and fluid-like flow rather than elastic rebound, eliminating the harmful rebound forces while maintaining energy absorption capability
Solution Approach 2:
The patent employs composite material structures combining rigid chassis with viscous shock-absorbing bumpers, and potentially multiple layers of different materials, to achieve both protection and energy dissipation without rebound. The composite structure allows each material to perform its specialized function
2Stability of the object's composition
If protective covers are designed to be securely assembled, then structural integrity is maintained, but quick disassembly for integrity checks becomes difficult
Solution Approach 1:
The patent divides the protective cover into separable modular components (chassis, bumpers, outer layer) that can be independently assembled and disassembled. This segmentation allows the cover to be securely assembled when closed yet easily taken apart for inspection by simply separating the modules from each other
3Ease of manufacture
If compatible materials are used for all components, then manufacturing is simpler, but energy-absorbing materials like silicon or polymer-based dilatant cannot be used due to incompatibility
Solution Approach 1:
The patent introduces an intermediary component (such as an adhesive layer, intermediate material, or mechanical interlocking feature) between incompatible materials like silicon/polymer-based dilatant bumpers and the rigid chassis. This intermediary enables the joining of materials that would otherwise be incompatible, allowing high energy-absorption materials to be used without manufacturing complexity
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 impact energy, reduces the risk of internal damage, allows for easy disassembly, and provides a cost-effective, compact, and aesthetically enhanced protective solution for various device sizes and brands.
Implementation Method 1
Known elastomeric covers/shells are used to soften impacts by absorbing energy elastically
Implementation Method 2
at least one shock-absorbing bumper can comprise one or more hooks configured to snap-fasten with said portions of the chassis
Data Source
AI summary
A protective case (1) configured to reversibly receive and retain a mobile device (10) comprising a rigid chassis (2) configured to receive the mobile device (10): a plurality of shock-absorbing bumpers (3) shaped to interlock with respective portions of said chassis (2).