Telescopic Capsule Venting and Sealing for Powder Leakage
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Solution Overview
Problem
Standard capsule shells with telescopically engaging parts experience significant leakage of powdered substances due to their design.
Innovation Solution
The capsule shell is designed with specific features such as inward protrusions and air vents to minimize leakage, including at least two air vents on the rim of the body and a protrusion ring on the cap, ensuring a precise fit and reduced clearance during closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the capsule shell uses a simple telescopic engagement design, then the device complexity is reduced and ease of manufacture is improved, but powder leakage increases significantly
Solution Approach 1:
The capsule shell is divided into multiple functional segments: the cap with closure ring, the body with air vent, and the intermediate section with protrusions. This segmentation allows each part to perform its specific function - the protrusions create sealing contact points, the air vent allows pressure equalization, and the closure rings provide structural engagement - thereby reducing powder leakage without requiring overall structural complexity
Solution Approach 2:
The capsule shell applies local quality modifications at specific locations: inward protrusions are added only in the intermediate section where sealing is needed, the air vent is positioned specifically in the body section, and the closure rings are placed at the cap and body ends. These localized features reduce powder leakage at critical points without making the entire capsule structure complex
2Loss of substance
If the capsule shell includes multiple protrusions and air vents to reduce leakage, then powder leakage is reduced, but the ease of manufacture decreases
Solution Approach 1:
The protrusions, air vents, and closure rings are pre-formed as integral parts of the capsule shell components during the molding process. This preliminary action incorporates the leakage-reduction features into the basic capsule structure without requiring additional manufacturing steps, thereby maintaining ease of manufacture while achieving reduced powder leakage
Data Source
AI summary
The present invention relates to a capsule shell with two parts, a cap and a body, the two parts engage telescopically with each other, the capsule shell is used for storing solid substances in powder or granular form and shows a minimized leakage rate of powder when the capsule shell is filled with the solid substances in powder form and is closed.