Mobile Device Case with Dual Hinge Linkage and Localized Protection
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Solution Overview
Problem
Conventional protective cases for mobile electronic devices lack integrated convenience features, often causing discomfort due to sharp corners, being bulky, and failing to provide secure protection, especially when transitioning between usage positions.
Innovation Solution
A mobile electronic device case featuring a base with a dual hinge linkage that allows movement between closed, upright seated, and hand-held carry positions, incorporating a combination of rigid and elastic materials for impact absorption and secure retention, along with adjustable straps for user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If high durometer plastic cases are used to provide overall durability, then strength is improved, but the corners become jagged or sharp causing discomfort to the user's hand
Solution Approach 1:
The case uses different materials for different parts: high durometer plastic for the main body to provide durability, and soft resilient material specifically at the corners to eliminate sharp edges and provide comfort. This local differentiation resolves the contradiction between strength and comfort.
2Strength
If soft resilient cases made from rubber or elastomeric materials are used to provide impact protection, then impact absorption is improved, but the cases become large and unwieldy reducing the slim profile benefit
Solution Approach 1:
Instead of making the entire case from soft resilient material, the invention applies soft material only at specific locations (corners and high-impact areas) while maintaining hard material for the main structure. This localized approach provides impact protection without increasing overall case volume.
3Strength
If rubber or elastomeric materials are used for soft cases to provide impact protection, then impact absorption is improved, but the high coefficient of friction causes cases to adhere to surfaces making them difficult to move
Solution Approach 1:
The soft resilient material is applied only to specific high-impact areas rather than the entire case surface. This localized application provides impact protection at critical points while maintaining low-friction surfaces elsewhere, allowing the case to slide easily across surfaces.
4Reliability
If conventional protective cases are designed to prevent device damage, then protection is improved, but they lack integrated convenience features reducing user experience
Solution Approach 1:
The case integrates multiple functions into a single protective structure: impact protection through resilient materials, comfort through rounded corners, secure retention through friction-fit mechanisms, and ease of movement through low-friction surfaces. This multi-functionality resolves the contradiction between protection and convenience.
5Reliability
If cases are designed with secure retention to prevent device exposure, then reliability is improved, but they may become bulky reducing the slim profile advantage
Solution Approach 1:
The case uses thin resilient material layers that provide secure retention through elastic friction-fit mechanisms rather than thick rigid structures. The soft material deforms to grip the device securely while maintaining a slim overall profile when not in use.
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 provides enhanced user experience with secure retention, impact absorption, and adjustable positioning, addressing the limitations of existing cases by offering a durable, ergonomic, and versatile solution for mobile device protection.
Implementation Method 1
elastic and resilient materials that absorb impact forces ('soft cases')
Implementation Method 2
a dual hinge linkage includes a first-end link body pivotably coupled to the base and a second-end link body pivotably coupled to the cover
Data Source
AI summary
A mobile electronic device case for protecting and securing a mobile electronic device in multiple positions. The case having a base for retaining a mobile electronic device, a cover for enclosing the mobile electronic device, and dual hinge linkage to allow pivotal rotation of the base and cover. The cover and base are affixed to the dual hinge linkage which allows the cover and base to rotate and secure into multiple positions including the closed position, the upright seated position, and the hand-held carry position. The dual hinge linkage is also used to provide increased stability and added protection. A flexible and adjustable strap is mounted within a recess on the outside surface of the cover and allows a user to hold the case in one hand while using the device with the other hand in the hand-held carry position.