Screw-type vent thermal fusion membrane fixation
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Solution Overview
Problem
Conventional vents installed on electronic device casing bodies or LED light sources face challenges in preventing the permeation of moisture and contamination particles while maintaining air permeability, especially due to the thinness of filters which can be easily torn.
Innovation Solution
A screw-type vent is designed with a membrane seated on a seating protrusion of the vent body, and a fixing member is seated on the membrane to stabilize its position. The membrane is bonded to the seating protrusion and the fixing member using high-frequency thermal fusion, ensuring secure fixation without damaging the thin membrane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter is fixed to a vent body in a fitting or press-fit manner, then the filter can be securely fixed, but the thin filter is easily torn
Solution Approach 1:
The patent replaces the mechanical fixation system (fitting or press-fit) with a thermal fusion system. The membrane is bonded to the vent body through thermal fusion, which distributes the bonding stress across the entire bonding surface rather than concentrating it at specific mechanical contact points, thereby preventing tears in thin filters while maintaining secure fixation
Solution Approach 2:
The patent changes the bonding parameter from mechanical interlocking to thermal bonding. By using thermal fusion, the bonding process occurs through heat-induced material fusion rather than mechanical force, which is gentler on thin membrane materials and avoids the tearing issues associated with mechanical fixation methods
2Temperature
If a ventilation hole is formed in the casing body, then heat can be discharged to the outside, but moisture and contamination particles can permeate through the ventilation hole
Solution Approach 1:
The patent uses a membrane (thin film) that is bonded to the vent body to cover the ventilation hole. This membrane acts as a barrier that blocks moisture and contamination particles from permeating through the ventilation hole while still allowing heat to be discharged, thus resolving the contradiction between heat discharge and protection from harmful factors
Solution Approach 2:
The membrane used in the patent is designed with porous characteristics that allow thermal energy to pass through while blocking liquid moisture and solid contamination particles. The porous structure enables heat discharge functionality while providing protection against harmful factors
3Productivity
If a membrane is applied to a filter, then air permeability is maximized and moisture/contamination blocking is improved, but the membrane needs stable fixation at a correct location
Solution Approach 1:
The patent replaces mechanical fixation methods with thermal fusion to bond the membrane to the vent body. This thermal bonding method provides uniform and stable fixation across the entire membrane surface, ensuring the membrane remains at the correct location while maintaining high air permeability without the need for mechanical fasteners that could compromise the membrane
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 screw-type vent effectively blocks the permeation of moisture and contamination particles while maximizing air permeability, preventing damage to the electronic device or casing body from accumulated heat or moisture.
Implementation Method 1
The membrane may be bonded to the seating protrusion and the fixing member in a thermal fusion manner.
Data Source
AI summary
A screw-type vent is disclosed. The disclosed vent comprises: a body (100) having a through-hole vertically penetrating the center thereof; a membrane (200) disposed on top of the through-hole; and a fixing member (300) loaded on the top surface edge of the membrane. The membrane (200) is joined to the body (100) and the fixing member (300) through thermosetting. The disclosed vent has the membrane joined and fixed to the body and the fixing member through thermosetting, and thus the membrane, which is thin, can be loaded and stably fixed at the correct position on the body, and the membrane can effectively prevent infiltration of foreign material and moisture while ensuring air permeability.