Cap-Type Vent With Elastic Supporting Member
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Solution Overview
Problem
Conventional cap-type vents for vehicle headlamps face challenges in assembly complexity due to cup-shaped vent members, which also lead to reduced performance under high-temperature and high-humidity conditions, allowing foreign matter and moisture to enter the headlamp.
Innovation Solution
A cap-type vent design featuring a porous waterproof air-permeable sheet inserted into a cap housing with a fixing rib, supported by an elastic material, forming an air circulation path and preventing deformation, thus maintaining air circulation performance and preventing foreign matter and moisture ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a cup-shaped vent member is used in the conventional cap-type vent, then the vent can be assembled into the housing, but the assembly process becomes complex because the vent member must be mounted to fit a specific direction
Solution Approach 1:
The patent applies asymmetry by designing the cap housing with a specific orientation where the opening faces a particular direction (away from the bulb). This asymmetric design eliminates the need for complex directional fitting during assembly, as the housing can only be installed in one correct orientation, simplifying the assembly process while maintaining proper ventilation function.
2Reliability
If a cup-shaped vent member is used in the conventional cap-type vent, then the vent structure can be formed, but the vent performance is reduced under high-temperature and high-humidity conditions due to material and shape changes
Solution Approach 1:
The patent applies parameter changes by selecting materials with appropriate thermal and humidity resistance properties for the cap housing. The housing is designed to maintain its structural parameters (shape and dimensions) under high-temperature and high-humidity conditions, preventing deformation that would compromise ventilation performance or allow foreign matter ingress.
3Reliability
If the conventional cap-type vent is used, then air can be discharged from the headlamp, but foreign matter and moisture can flow into the headlamp through the vent hole
Solution Approach 1:
The patent applies this principle by using a waterproof breathable membrane (WB membrane) as the vent member. This thin film structure allows water vapor and air to pass through while blocking liquid water and foreign matter, providing selective permeability that protects the headlamp interior from contamination while maintaining ventilation functionality.
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 design simplifies assembly, enhances rigidity, maintains air circulation performance, and prevents foreign matter and moisture from entering the headlamp by using a pipe-shaped supporting member and a waterproof air-permeable sheet, ensuring effective air discharge and cooling.
Implementation Method 1
a space is formed between the housing and the vent member due to the change in the shape of the vent member... the supporting member is formed with an air circulation hole... the inner side surface of the cap housing is formed with a fixing rib for fixing the supporting member
Implementation Method 2
a waterproof air-permeable sheet disposed at the other end of the supporting member... prevents foreign matter and moisture from entering the headlamp
Data Source
AI summary
Provided is a cap-type vent having a porous waterproof air-permeable sheet inserted and mounted in a cap housing having fixing ribs formed therein, and fixing the waterproof air-permeable sheet by a supporting member made from an elastic material. The provided cap-type vent comprises a supporting member having one end coupled to an object, a waterproof air-permeable sheet disposed at the other end of the supporting member; and a cap housing formed in a cup shape having an opening formed at one end of the cup shape, and having the supporting member and the waterproof air-permeable sheet inserted through the opening, the supporting member is formed with an air circulation hole formed by penetrating the supporting member, and the inner side surface of the cap housing is formed with a fixing rib is configured to fix the supporting member by contacting the outer sidewall of the supporting member.