Protective Wall Curvature and Grooves for Electronic Control Apparatus
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Solution Overview
Problem
Conventional electronic control apparatuses suffer from damage to the protective wall due to mechanical shock from tools during mounting, and the gas-permeable membrane loses permeability due to water accumulation, leading to potential deformation of the casing.
Innovation Solution
The protective wall is designed with an inclined outer surface and grooves to alleviate mechanical shock and prevent water accumulation, featuring a venting mechanism with a gas-permeable membrane that allows gas passage while preventing liquid entry, ensuring reliable breathing and preventing deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the protective wall is disposed upright on the casing surface with a cylindrical shape, then the gas-permeable membrane is protected from water accumulation, but the protective wall is vulnerable to mechanical shock from tools during mounting
Solution Approach 1:
The protective wall is designed with a curved outer peripheral surface instead of a straight cylindrical shape. This curvature allows mechanical shock from tools to be distributed and alleviated, preventing damage to the protective wall and underlying components while maintaining the upright configuration that protects against water accumulation.
2Ease of manufacture
If the protective wall has a simple cylindrical shape, then the structure is simple and easy to manufacture, but water can accumulate inside and damage the gas-permeable membrane
Solution Approach 1:
The protective wall is divided into multiple sections by introducing grooves that extend from the base to the top. These grooves segment the internal space, creating channels that prevent water accumulation while maintaining the overall cylindrical shape for ease of manufacture.
Solution Approach 2:
Grooves are introduced along the height of the protective wall, adding a vertical drainage dimension to the otherwise simple cylindrical structure. This allows water to drain downward through the grooves rather than accumulating inside, enhancing reliability without significantly complicating manufacturing.
3Device complexity
If the outer peripheral surface is perpendicular to the casing surface, then the structure is simple, but mechanical shock from tools directly damages the protective wall
Solution Approach 1:
The outer peripheral surface is designed with a curved profile instead of being perpendicular to the casing surface. This curvature provides shock-absorbing properties that alleviate mechanical impact from tools during mounting operations, protecting the protective wall and underlying components while adding minimal structural complexity.
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 solution effectively suppresses damage to the protective wall from mechanical shock and maintains gas-permeable membrane functionality by preventing water adhesion, ensuring the casing's integrity and seal integrity are maintained.
Implementation Method 1
a gas-permeable membrane that shuts off passage of liquids and permits passage of gases
Implementation Method 2
an outer peripheral surface in a direction of projection of the protective wall is formed so as to have an inclined surface... enabling the occurrence of damage to a protective wall to be suppressed even if tools, etc., strike it
Implementation Method 3
a groove... is formed so as to extend from a root of the protective wall to a leading edge... preventing water adhesion
Data Source
AI summary
A venting aperture is formed in an upper wall of a casing, a gas-permeable membrane supporting body is mounted to the casing so as to communicate between the venting aperture and an external portion through a communicating aperture, and a gas-permeable membrane is disposed so as to shut off the communicating aperture. A cylindrical protective wall is disposed so as to protrude integrally from the casing so as to surround the gas-permeable membrane supporting body. A leading edge region of an external surface of the protective wall is formed so as to have an inclined surface in which a wall thickness gradually decreases from a root end toward a leading edge, and a groove having a groove direction in a direction of projection of the protective wall is formed so as to extend from a root of the protective wall to a leading edge and so as to communicate between an internal portion and an external portion of the protective wall.