Visually Identifiable Engagement Marks for Filter Housing Fastening Verification
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Solution Overview
Problem
Existing substrate storing containers face challenges in confirming normal fastening of the filter unit's housing components, as incorrect torque settings or unintentional loosening can lead to incomplete or loose fastening, making it difficult to verify the fastening position.
Innovation Solution
The substrate storing container incorporates a filter unit with visually identifiable first and second engagement portions on the inner and outer housing components, allowing easy confirmation of normal fastening and preventing misalignment during the fastening process by configuring these portions to be visible within a specific circumferential range around the rotation axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the inner housing portion and outer housing portion are fastened using a torque wrench with predetermined torque, then the fastening strength is improved, but it becomes difficult to confirm whether the fastening position is normal
Solution Approach 1:
The patent applies visual identification marks (different colors or patterns) on the first and second engagement portions. When the inner housing portion is properly fastened to the outer housing portion, these marks align in a predetermined manner, providing immediate visual confirmation of correct fastening position and torque application.
2Reliability
If the fastening torque is controlled to prevent over-tightening, then the reliability of components is improved, but incomplete fastening may occur due to incorrect torque settings
Solution Approach 1:
The patent incorporates visual engagement marks on the engagement portions before fastening. These marks allow operators to verify proper engagement and alignment before applying torque, ensuring that the fastening process starts from the correct position and reducing the risk of incomplete or incorrect fastening.
3Ease of operation
If the housing components are designed with thread portions for fastening, then the ease of assembly is improved, but unintentional loosening may occur during handling
Solution Approach 1:
The patent provides visual feedback through the alignment of engagement marks that indicate when the fastening is complete and secure. This feedback mechanism allows operators to confirm proper tightness and reduces the likelihood of unintentional loosening by making the fastening state immediately observable.
Data Source
AI summary
A substrate storing container includes a filter unit having a housing that forms a ventilation path and a filter. The housing includes an outer housing portion and an inner housing portion at least partially disposed inside the outer housing portion and fastened to the outer housing portion. The inner housing portion has a male thread portion at a part disposed inside the outer housing portion. The outer housing portion has a female thread portion that meshes with the male thread portion. The inner housing portion has first engagement portions at a part that is disposed inside the outer housing portion and where the male thread portion does not exist. The outer housing portion has second engagement portions that engage with the first engagement portions at a part where the female thread portion does not exist. The first engagement portions and the second engagement portions are configured to be visually identifiable.