Housing Ventilation Member for Nozzle and Recess Openings
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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, an annular ridge on its outer surface, and a cover body protected by column portions, allowing attachment to both nozzle and recess opening portions, ensuring secure fit and sealing across multiple housing types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional ventilation member with a single-type attachment structure is used, then the attachment process is simple, but it cannot be attached to different types of housings with varying opening portions
Solution Approach 1:
The support body is designed with a dual-function attachment structure that can accommodate both nozzle opening portions and recess opening portions. The through hole has two portions with different inner diameters, and an annular ridge portion can engage with either a nozzle opening or a recess opening, enabling a single ventilation member design to be universally attached to different housing types without requiring separate specialized components for each housing variant.
2Reliability
If the support body has a uniform inner diameter throughout, then the structure is simple, but it cannot provide secure contact with both nozzle and recess opening portions
Solution Approach 1:
The through hole of the support body is designed with non-uniform inner diameter, featuring a first portion with a larger inner diameter and a second portion with a smaller inner diameter. This local variation in dimensional quality allows different sections of the support body to make selective contact with different features of the housing opening (nozzle or recess), ensuring reliable attachment while accommodating the structural differences between various housing types.
Data Source
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).