Replaceable Ring Waterproof Door Assembly
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Solution Overview
Problem
Existing waterproof door assemblies for electronic devices require replacement of the entire door when the waterproof gasket is damaged, leading to high maintenance costs and reduced sealing performance due to thermal expansion or contraction.
Innovation Solution
A waterproof door assembly featuring a replaceable ring clamped between an annular wall and a bump, with a switch flipping element and lock mechanism for multi-stage position adjustment and secure latching, allowing for easy replacement of the ring and preventing deformation during thermal changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a waterproof gasket is attached onto the inner side of the door to seal the opening, then the waterproof performance is improved, but the maintenance cost increases because the whole door must be replaced when the gasket is damaged
Solution Approach 1:
The waterproof sealing component is segmented from the door panel, allowing the sealing ring to be independently replaced without replacing the entire door assembly. This resolves the contradiction by maintaining waterproof performance while reducing maintenance costs through modular replacement.
Solution Approach 2:
The sealing function is extracted as a separate replaceable ring component from the door structure. This extraction allows the sealing element to be independently maintained, improving ease of repair while preserving the waterproof performance through dedicated sealing components.
2Reliability
If a waterproof gasket covers a relatively large area of the inner side of the door, then the sealing performance is improved, but the service life is reduced due to thermal expansion or contraction causing deformation
Solution Approach 1:
The sealing function is concentrated in a localized ring structure rather than spreading across the entire door surface. This localized sealing approach reduces the area susceptible to thermal deformation while maintaining effective sealing performance at the critical interface.
Solution Approach 2:
The sealing system is segmented into a separate replaceable ring that can be independently replaced when degraded by thermal effects. This segmentation protects the service life of the door structure while allowing periodic replacement of the sealing element to maintain sealing performance.
3Reliability
If the replaceable ring is sheathed on the periphery of the bump, then the waterproof performance is maintained, but the structure complexity increases
Solution Approach 1:
The replaceable sealing ring is nested on the periphery of the bump structure, utilizing the existing geometric features of the door assembly. This nesting approach adds minimal structural complexity while achieving the waterproof sealing function through concentric arrangement.
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 provides high waterproof performance, low maintenance costs, and extended service life by allowing ring replacement and preventing deformation, while the lock mechanism enhances structural strength and protection.
Implementation Method 1
if thermal expansion or contraction partially happens to the waterproof gasket, the waterproof gasket will be deformed to reduce the sealing performance and service life of the door
Data Source
AI summary
A waterproof door assembly of an electronic device having an opening with an annulus wall includes a fastening element formed on the electronic device, a waterproof door having a door panel pivotally coupled to the electronic device and a replaceable ring, and a switch flipping element. A bump and an engaging portion are extended from opposite sides of the door panel respectively. The replaceable ring is sheathed on the periphery of the bump; the switch flipping element slides on the door panel. The switch flipping element has a snapping portion and a fastening portion for performing a multi-stage position adjustment to latch the fastening portion to the corresponding fastening element. The bump is inserted into the opening, and the replaceable ring is clamped between the annulus wall and the bump to maintain high sealing performance and long service life of the waterproof door.