Integrated Ventilation Mechanism for Electronic Device Housing
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Solution Overview
Problem
Conventional ventilation mechanisms for electronic device housings are structurally complex due to multiple components, leading to poor machinability and a large number of components, which complicates the moderation of pressure fluctuations and ensures a waterproof function.
Innovation Solution
A simplified ventilation mechanism integrated into the housing, featuring a projection with a window and through hole forming a ventilation path, combined with a water-repellent filter, reduces the number of components and improves machinability while maintaining waterproof functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional ventilation unit with multiple components (seal member, partition wall member, ventilation member) is used, then the waterproof function is ensured, but the number of components increases and machinability deteriorates
Solution Approach 1:
The patent integrates the housing body, projection, wall, window, and through hole into a single integrated housing structure. The projection is formed integrally with the housing body, and the wall is formed integrally with the housing, eliminating the need for separate seal members and partition wall members. This merging of components maintains the waterproof function while significantly reducing the total number of parts.
Solution Approach 2:
The housing structure serves multiple functions simultaneously: it provides the main enclosure, creates the ventilation path through the projection and window, and prevents water entry through the integrated wall structure. The single integrated housing performs what previously required multiple specialized components, improving machinability while maintaining reliability.
2Reliability
If a conventional ventilation unit with multiple components is used, then the waterproof function is ensured, but machinability deteriorates
Solution Approach 1:
By consolidating the housing body, projection, wall, and ventilation structures into a single integrally formed component, the patent improves machinability. The integrated structure can be manufactured as one piece using conventional molding or machining processes, eliminating the need for multiple assembly operations and improving manufacturing efficiency while maintaining waterproof integrity.
3Ease of operation
If the ventilation path is formed by separate components, then assembly is easier, but the number of components increases and machinability worsens
Solution Approach 1:
The ventilation path is formed as an integral part of the housing structure, with the projection and window created during the same manufacturing process. This eliminates the need for separate assembly of ventilation components, reducing the number of parts while maintaining ease of assembly (in fact, eliminating assembly steps for these components).
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 integrated design reduces the number of components and enhances machinability by forming a ventilation path with a projection and window, preventing water entry and ensuring a waterproof function, with the water-repellent filter as the only additional component.
Implementation Method 1
a water-repellent filter attached to a region, on an inner side of the housing, that includes the projection and the through hole
Data Source
AI summary
In a ventilation mechanism of an electronic control device, a ventilation path is formed by a through hole and a window formed in a side surface of a projection projecting outward of a case, and entry of water into the ventilation path is prevented by a wall. A water-repellent filter is attached to an inner wall of the case, with a gap between the water-repellent filter and a bottom surface of the projection. The projection and the wall are integrated with the case. This achieves reduction in the number of components of the ventilation mechanism and improvement in machinability while ensuring a waterproof function.