Backpack Magnetic Closure Waterproof Seal Design
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Solution Overview
Problem
Existing portable container devices often fail to provide a reliable, waterproof, and airtight seal, especially under pressure, which can lead to the ingress of liquids and dust into the storage compartment.
Innovation Solution
The development of container designs featuring a magnetic closure mechanism, combined with a gasket and clamshell structure, which utilizes magnetic strips to create a watertight and airtight seal, capable of withstanding pressures up to 7 psi, and includes a zipper assembly for easy access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a magnetic closure mechanism is used, then the ease of operation is improved, but the reliability of the seal may worsen
Solution Approach 1:
The patent combines multiple closure mechanisms (magnetic closure, zipper assembly, and gasket) into a unified sealing system. The magnetic closure provides easy operation for opening/closing, while the zipper assembly and gasket work together to ensure reliable waterproof sealing, thus resolving the contradiction between ease of operation and seal reliability.
Solution Approach 2:
The closure system uses composite construction with different materials serving different functions: magnetic elements for easy engagement/disengagement, zipper components for secure closure, and gasket materials (such as TPU or silicone) for waterproof sealing. This composite approach allows each component to optimize its specific function while working together as a integrated system.
2Object-affected harmful factors
If a waterproof closure mechanism is used, then the protection from liquids is improved, but the device complexity increases
Solution Approach 1:
The waterproof closure system is divided into distinct functional segments: the magnetic closure mechanism for engagement, the zipper assembly for secure closure, and the gasket for sealing. This segmentation allows each component to be optimized independently while maintaining overall waterproof performance, managing complexity through modular design.
Solution Approach 2:
The gasket acts as an intermediary element between the zipper assembly and the container walls, providing the actual waterproof seal. This intermediary component simplifies the overall design by concentrating the sealing function in a dedicated element rather than requiring the entire closure mechanism to be waterproof.
3Reliability
If pressure resistance is improved, then the reliability of the seal is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent employs TPU (thermoplastic polyurethane) material for the gasket, which has specific elastic and resilient properties that allow it to maintain sealing effectiveness under varying pressure conditions. The material parameters are selected to provide both pressure resistance and tolerance for manufacturing variations, reducing the need for extremely tight tolerances.
Solution Approach 2:
The gasket is designed with inherent elasticity and compressibility to compensate for minor manufacturing variations and assembly tolerances. This 'cushioning' effect occurs automatically during closure, where the gasket material deforms to fill gaps and ensure sealing, thereby maintaining reliability under pressure without requiring ultra-precise manufacturing.
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 maintains a dry and sealed storage compartment, preventing the entry of liquids and dust, while allowing for easy opening and closing without snagging, and can withstand significant internal and external pressures.
Implementation Method 1
The closure mechanism may include a first magnetic strip that is coupled to a first internal surface at a front edge of the opening and configured to magnetically couple to a second magnetic strip that is coupled to a second internal surface at a back edge of the opening
Data Source
AI summary
A backpack that has a front pocket with an outer shell with an opening that is sealed by a closure mechanism. The closure mechanism can include magnetic strips that are configured to partially or wholly seal the opening, and have hinged couplings of the magnetic strips to internal surfaces of the container.