Ventilation member
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Solution Overview
Problem
The increasing variety of electrical/electronic components in vehicles necessitates a ventilation member that can be attached to different types of housings with varying opening portions, as traditional ventilation structures are not adaptable to diverse housing configurations.
Innovation Solution
A ventilation member featuring a cylindrical support body with a through hole of varying diameters and an annular ridge, allowing attachment to both nozzle and recess opening portions, with an air-permeable membrane and a cover body protected by an integral column portion for secure fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional ventilation member with a single attachment structure is used, then the attachment process is simple, but it can only be attached to one specific type of housing opening
Solution Approach 1:
The support body is designed with a dual-function attachment structure that can accommodate both nozzle opening portions (protruding from housing surface) and recess opening portions (recessed into housing surface). The through hole has different diameter sections: a first diameter section for fitting over nozzle openings and a second diameter section for fitting into recess openings, allowing one ventilation member to serve multiple housing types
Solution Approach 2:
The through hole of the support body is segmented into multiple sections with different diameters along its length. This segmentation allows different portions of the support body to interface with different types of housing openings, enabling the single support body to adapt to multiple attachment scenarios without requiring separate ventilation members for each housing type
2Adaptability or versatility
If the support body has a uniform diameter throughout, then the structure is simple, but it cannot attach to both nozzle and recess opening portions
Solution Approach 1:
The support body incorporates variable geometry along its length, with the through hole diameter changing dynamically from the first diameter section to the second diameter section. This dynamic variation in diameter allows the support body to transition between fitting over protruding nozzle openings and fitting into recessed openings, adapting to different housing configurations
3Object-affected harmful factors
If the air-permeable membrane is exposed, then ventilation efficiency is high, but foreign substances can easily enter the housing
Solution Approach 1:
A cover body is introduced as an intermediary protective element that covers the air-permeable membrane from the exterior. This cover body allows air to pass through while blocking foreign substances, serving as a mediator between the ventilation function and the protection function. The cover body is securely attached to the support body using column portions to prevent detachment
Data Source
Figure 1~2
Figure 3A~3C
Figure 4~5
AI summary
A ventilation member (10) includes an air-permeable membrane (2), a support body (4), a cover body (6), and a column portion (8). The support body (4) has a through hole (14) serving as an air passage. The through hole (14) includes (a) a first portion (14a) having a relatively large inner diameter and (b) a second portion (14b) having a relatively small inner diameter. An annular ridge portion (12) is formed on an outer peripheral surface of the support body (4) along a circumferential direction of the support body (4). When the housing (20) has a nozzle opening portion (22), the ventilation member (10) is attached to the housing (20) by inserting the nozzle opening portion 22 into the support body 4. When the housing (20) has a recess opening portion (24), the ventilation member (10) is attached to the housing (20) by fitting the support body (4) into the recess opening portion (24).