Waterproof Case Drainage for Electronic Control Unit
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Solution Overview
Problem
Conventional electronic control units with waterproof cases and respiratory filters are restricted in mounting direction, posture, or location due to a single-directional drainage channel, which can lead to direct contact with high-pressure cleaning jets and inadequate protection of the respiratory filter.
Innovation Solution
The electronic control unit features a waterproof case with raised protective walls and multiple diagonal or radial concave drainage channels surrounding the respiratory filter, ensuring effective drainage and protection without restricting mounting flexibility, using an O-ring for airtight fixation and rounded or labyrinthine channel shapes to prevent direct jet contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-directional drainage channel is provided extending from the concave portion to the side surface of the waterproof case, then the drainage function is simplified, but the mounting direction, posture, or location of the electronic control unit is restricted
Solution Approach 1:
The single drainage channel is divided into multiple drainage channels (first drainage channel and second drainage channel) that extend in different directions from the concave portion. This segmentation allows the drainage system to function effectively regardless of the electronic control unit's mounting direction, posture, or location, thereby resolving the contradiction between structural simplicity and mounting flexibility.
2Productivity
If a drainage channel is provided for drainage function, then water can be drained effectively, but a jet used during high-pressure cleaning may come into direct contact with the respiratory filter
Solution Approach 1:
The drainage channels are nested within the concave portion structure, extending from the concave portion to the side surface. This nesting arrangement allows the drainage channels to be surrounded by the inner wall of the concave portion, which protects the respiratory filter from direct contact with high-pressure cleaning jets while maintaining effective drainage functionality.
3Object-affected harmful factors
If the respiratory filter is disposed in a concave portion surrounded by inner wall, then the respiratory filter is protected from direct jet contact, but the drainage channel may still expose the respiratory filter to harmful factors
Solution Approach 1:
The drainage channels extend in multiple dimensions and directions from the concave portion, with their open ends positioned at different locations on the side surface. This multi-dimensional arrangement ensures that regardless of the direction from which a high-pressure cleaning jet approaches, the respiratory filter remains protected while drainage functionality is maintained through the strategically positioned channel openings.
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
This design enhances the reliability and flexibility of the electronic control unit's mounting while preventing corrosion and ensuring effective drainage, maintaining the respiratory filter's integrity during high-pressure cleaning.
Implementation Method 1
the respiratory filter is fixed in an airtight manner via an O-ring within a ventilation hole
Implementation Method 2
at least two concave portions for drainage that each extend through different locations on the protective walls
Data Source
AI summary
An electronic control unit has a respiratory filter mounted on a waterproof case. Raised protective walls formed in the case surround the portion of the case at which the respiratory filter is arranged. At least two concave portions are provided for drainage that each extend through different positions of the protective walls.