Headlamp Housing Closure Element with Self-Retaining Seal
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Solution Overview
Problem
Existing closing elements for headlamp housings require external force to temporarily close ventilation components for tightness testing, which can corrupt the seal and affect the integrity of the glue joint.
Innovation Solution
A closing element with a self-retaining sealing formation that allows a sealing member to be inserted without external force, using a collar-shaped design with a microporous membrane and sealing rings to ensure a gas-tight seal without pressing the element into the glue joint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external force is applied to close the ventilation component for tightness testing, then the ventilation component is sealed, but the glue joint integrity is compromised
Solution Approach 1:
The closing element is divided into distinct functional segments: the closing element body, the sealing formation (collar), and the sealing member. This segmentation allows the sealing function to be isolated to specific components rather than requiring force applied to the entire closing element, thus protecting the glue joint while achieving ventilation component sealing.
Solution Approach 2:
The sealing member acts as an intermediary element between the sealing formation and the ventilation component. It is inserted into the sealing formation to create the seal, transferring the sealing function away from the closing element-glue joint interface and preventing force transmission to the vulnerable glue joint.
2Object-affected harmful factors
If a complex geometry carrier body is used to accommodate the filter element, then moisture and contaminant penetration is prevented, but device complexity increases
Solution Approach 1:
The patent employs a microporous membrane as the ventilation component, which inherently provides moisture and contaminant repellency through its porous structure. This eliminates the need for complex geometry carrier bodies, as the membrane's material properties alone suffice to prevent harmful factor penetration while maintaining ventilation functionality.
Solution Approach 2:
The microporous membrane functions as a thin film that provides the necessary protective barrier against moisture and contaminants. This thin film approach replaces complex rigid carrier body geometries, reducing device complexity while maintaining effective protection against harmful factors.
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
Enables a force-free temporary closure of the ventilation component for tightness testing, maintaining the integrity of the seal and avoiding external forces on the glue joint, ensuring accurate results without corrupting the seal during the test.
Implementation Method 1
Newer ventilation component may be formed from microporous membranes, which are available under the trade name, Gore-Tex. The ventilation capability, with a simultaneously water-impermeable and dirt-repellent property, is particularly characteristic.
Implementation Method 2
A closing element with a self-retaining sealing formation that allows a sealing member to be inserted without external force, using a collar-shaped design with a microporous membrane and sealing rings to ensure a gas-tight seal
Data Source
AI summary
A closing element for closing a service opening in the housing of a headlamp, and a method therefor, the closing element having a ventilation component, with the aid of which a gas exchange between an inside and an outside of the housing of the headlamp is facilitated. The closing element includes a sealing formation, on which a sealing member may be arranged or is arranged, so that the ventilation component may be or is temporarily closed with the aid of the sealing member.