Electronic Housing Seal Structure for Waterproof Pressure Equalization
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Solution Overview
Problem
Existing electronic devices face issues with waterproof failure and pressure imbalance in extreme environments due to structural limitations, leading to safety risks.
Innovation Solution
An electronic device housing with a casing featuring a mounting cavity, first and second through holes, and a seal with a sealing and fixing part that allows pressure equalization and liquid prevention by communicating with the outside when pressure differences occur.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a waterproof structure is provided to prevent liquid entry, then liquid ingress is prevented, but pressure balance function is lost
Solution Approach 1:
The waterproof structure is segmented into multiple functional zones: a sealing portion for liquid prevention and a pressure equalization portion with through-holes for pressure balance. This allows the single waterproof component to independently perform both liquid ingress prevention and pressure equalization functions simultaneously.
Solution Approach 2:
The waterproof structure is designed as a multi-functional component that simultaneously provides both waterproof sealing and pressure equalization capabilities. The structure includes both sealing portions for liquid barrier and pressure equalization portions with through-holes for pressure balance, enabling one component to fulfill multiple protective functions.
2Object-affected harmful factors
If the sealing part blocks the first through hole to prevent liquid entry, then waterproofing is achieved, but pressure equalization is blocked
Solution Approach 1:
The through-holes are divided into two distinct types: first through-holes blocked by the sealing portion for waterproofing, and second through-holes blocked by the sealing ridge for pressure equalization. This segmentation allows selective blocking of different hole types to achieve both waterproofing and pressure balance functions.
Solution Approach 2:
Different portions of the waterproof structure have different blocking characteristics: the sealing portion blocks first through-holes while allowing pressure equalization through second through-holes, and the sealing ridge blocks second through-holes while allowing first through-holes to function. This local differentiation of blocking properties enables simultaneous achievement of waterproofing and pressure equalization.
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 housing effectively prevents liquid ingress and balances internal and external air pressure, ensuring device functionality in extreme conditions.
Implementation Method 1
the seal may be made of hydrophobic material or coated with a hydrophobic layer on a surface thereof
Implementation Method 2
the sealing part has elasticity, and when pressure in the accommodating cavity is greater than that of the outside, at least part of the sealing part is separated from the first through hole
Data Source
AI summary
Disclosed are an electronic device housing including a casing and a seal, and an electronic device. The casing has an interior provided with an accommodating cavity configured to accommodate electronic device components, and a casing wall provided with a mounting cavity configured to mount the seal. The casing includes first and second through holes. The first and second through holes communicates the mounting cavity with the accommodating cavity and an outside, respectively. The seal includes a sealing part and a fixing part connected thereto. The fixing part is fixed to the casing wall, and the sealing part blocks the first through hole. The sealing part has elasticity. When pressure in the accommodating cavity is greater than that of the outside, at least part of the sealing part is separated from the first through hole, such that the accommodating cavity communicates with the mounting cavity to communicate with the outside.