Waterproof Assembly Cap Gasket Compression Sealing
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Solution Overview
Problem
Existing waterproof assemblies for outdoor electronic devices are inconvenient to operate and assemble, and waterproof gaskets tend to deform and lose their sealing effectiveness over time due to screwing, which complicates assembly and affects their waterproof capability.
Innovation Solution
A waterproof assembly comprising a casing, a gasket, and a cap, where the cap presses the gasket to seal the button opening, allowing for easy installation and removal without excessive compression, thereby extending the gasket's lifespan and maintaining a tight, waterproof fit without screws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If waterproof gaskets are fixed by screwing, then the assembly is secured, but the gasket deforms and becomes loose over time, affecting waterproof capability
Solution Approach 1:
The patent removes the screwing mechanism from the waterproof assembly, extracting the harmful mechanical stress that causes gasket deformation. The gasket is retained solely for sealing purposes without being subjected to fastening forces, thereby extending its service life while maintaining waterproof capability.
Solution Approach 2:
The patent separates the fastening function from the sealing function. The cap provides mechanical fastening through snap-fit engagement with the housing, while the gasket exclusively provides sealing without bearing structural loads. This functional segmentation prevents gasket deformation and extends its operational life.
2Reliability
If a waterproof cover is added on the outside of a button, then waterproof function is achieved, but operation becomes inconvenient as the cover must be opened and closed
Solution Approach 1:
The patent uses a flexible gasket that can be compressed to seal around the button while allowing the button to be pressed through it. This eliminates the need for a rigid waterproof cover that would need to be opened and closed, maintaining both waterproof protection and ease of button operation.
3Reliability
If the cap compresses the gasket too much, then sealing is improved, but the gasket deforms and lifespan is reduced
Solution Approach 1:
The patent applies partial compression to the gasket - enough to create an effective seal between the cap and housing, but not excessive compression that would cause deformation. The snap-fit mechanism of the cap provides controlled, moderate compression force that maintains sealing effectiveness while preserving gasket integrity and extending its lifespan.
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 a waterproof and dustproof assembly that is easy to assemble and maintain, with precise control over gasket compression to prevent deformation, ensuring a long-lasting and effective seal with an IP67 rating.
Implementation Method 1
The cap is configured to press the gasket to seal the button opening on the casing
Implementation Method 2
The gasket includes a main body and a protruding portion... allowing for easy installation and removal without excessive compression, thereby extending the gasket's lifespan
Data Source
AI summary
A waterproof assembly includes a casing, a gasket, and a cap. The casing has an opening. The gasket includes a main body and a protruding portion. The main body has a first circular raised structure configured to abut against an inner surface of the casing. The protruding portion is connected to the main body and is configured to at least partially protrude out of the casing through the opening. The cap is configured to abut against a side of the main body away from the opening. The cap has a through hole configured to be aligned with the protruding portion. The casing further has a plurality of fixing members configured to abut against a side of the cap away from the gasket.