Triangular Ridge Mobile Case Impact Absorption
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Solution Overview
Problem
Existing mobile device cases provide inadequate impact protection without significantly increasing cost, size, or weight, as they often rely on excessive materials that compromise portability and ease of use.
Innovation Solution
A mobile device case featuring shock-absorbing triangular ridges on the inner surfaces that deform to absorb impact, combining a rigid outer shell with a soft elastomeric inner layer to dissipate forces efficiently, allowing for thinner, lighter designs while maintaining protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If more material is used to increase impact protection, then shock absorption capability is improved, but case weight and size increase
Solution Approach 1:
The patent changes the geometric parameters of the protrusions from semicircular to triangular cross-section. This parameter change allows the protrusions to deform in a controlled manner during impact, increasing the distance over which impact force is absorbed while maintaining minimal material usage. The triangular geometry provides optimal deformation characteristics that improve shock absorption without adding weight.
Solution Approach 2:
The patent introduces a geometric dimensioning solution by using triangular cross-section protrusions with specific height and base measurements. This dimensional approach allows the protrusions to compress and deform during impact, creating a progressive absorption mechanism that extends the impact absorption process over time and distance without requiring additional material volume.
2Reliability
If more material is used to increase impact protection, then shock absorption capability is improved, but case size increases
Solution Approach 1:
The patent optimizes the dimensional parameters of the protrusions, specifying that they have a triangular cross-section with particular height and base dimensions. This parameter optimization allows maximum impact absorption efficiency per unit of material, reducing the overall volume required for protective functionality while maintaining or improving protection capability.
Solution Approach 2:
The patent applies protective protrusions only at specific locations where impact is most likely to occur, rather than uniformly distributing material throughout the case. This localized quality approach concentrates protective functionality at critical impact zones, reducing overall case volume while maintaining effective protection.
3Reliability
If protrusion surface area increases quickly during compression, then impact absorption is improved, but material efficiency decreases
Solution Approach 1:
The patent specifies that the protrusions have a triangular cross-section rather than semicircular, which fundamentally changes the deformation characteristics during compression. The triangular geometry ensures that the surface area increases progressively and controllably as the protrusion compresses, extending the deformation distance and improving material efficiency in absorbing impact energy.
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 case effectively absorbs impact forces, reducing the stress on the device during drops and falls, thereby enhancing protection without adding bulk or weight, thus improving portability and usability.
Implementation Method 1
triangular protrusions that have a triangular cross section and extend toward the inside of the case, so that an apex of each of the triangular protrusions contacts the mobile device when it is arranged inside the case
Data Source
AI summary
A case for a mobile device, including first, second, third, and fourth sides, each with inside and outside surfaces opposite to each other. The inside surfaces of the first and second sides face each other. The inside surface of the third and fourth sides faces each other. The first and second sides are arranged between the third and fourth sides, and the third and fourth sides are arranged between the first and second sides, so that the four sides form at least part of a frame configured to surround a periphery of the mobile device. At least one of the inside surfaces of the first, second, third, and fourth sides includes triangular protrusions that have a triangular cross section and extend toward the inside of the case, so that an apex of each of the triangular protrusions contacts the mobile device when it is arranged inside the case.