Electronic Controller Sealing Visual Inspection
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Solution Overview
Problem
Conventional electronic controllers face difficulties in identifying and addressing air leakage issues due to insufficient sealing material, leading to high reject ratios in airtightness tests and unnecessary material usage when applying sealing material across the entire periphery.
Innovation Solution
The electronic controller design includes visible spaces between casing members where the sealing material is applied, allowing for easy identification and targeted application of additional sealing material, reducing the need for excessive material usage and improving assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sealing material is applied to the entire periphery of the casing, then water-proofing reliability is improved, but sealing material usage increases and assembly efficiency deteriorates
Solution Approach 1:
The patent applies sealing material selectively only at specific locations where air leakage is detected, rather than uniformly across the entire periphery. This localized application approach maintains water-proofing reliability at critical joints while significantly reducing overall sealing material consumption and improving assembly efficiency.
2Reliability
If sealing material is applied to the entire periphery of the casing, then water-proofing reliability is improved, but assembly time increases
Solution Approach 1:
The patent enables targeted application of sealing material only at specific leakage points identified through visual inspection of gaps between casing members. This eliminates the need for time-consuming application across the entire periphery, significantly reducing assembly time while maintaining water-proofing reliability at critical locations.
3Productivity
If visual identification of air leakage areas is enabled, then assembly efficiency is improved, but device complexity increases
Solution Approach 1:
The patent divides the casing into multiple members with intentional gaps between them, allowing visual inspection of the sealing material application state. This segmentation enables assembly efficiency improvement through easy identification of air leakage areas without requiring complex detection devices, as the gaps themselves serve as inspection windows.
Data Source
AI summary
Provided is an electronic controller which enables visual identification of a portion applied with a small amount of a sealing material, which has a high possibility of air leakage from an area in which a joint is to be established. The electronic controller includes: an electronic circuit board; and a casing including a cover (1), a base (4), and a lid sealed with a sealing material (20) applied to surfaces thereof at which the cover (1), the base (4), and the lid are to be joined together. An area in which the cover (1), the base (4), and the lid are to joined together is provided with a space (16) thereto for enabling an application state of the sealing material (20) to be observed with a naked eye.