Safety Capsule Acute-Angled Protrusion Design
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Solution Overview
Problem
Existing childproof safety capsules often malfunction when the protrusion shaped as a right-angled triangle breaks or is forced to turn over during the screwing back process, impairing the capsule's proper functioning.
Innovation Solution
A safety capsule design featuring a press-fit engagement mechanism and flexible tabs that allow secure connection between the cap and cover, preventing breakage and ensuring reliable operation by incorporating a first connecting means with looped annular elements and flexible tabs that guide motion for secure closure and opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a protrusion shaped as a right-angled triangle is used to interact with the projection during screwing back, then motion transmission from cover to cap is enabled, but the protrusion may break or be forced to turn over, causing malfunction
Solution Approach 1:
The patent changes the geometric parameters of the engagement surfaces by replacing the right-angled triangle shape with an acute-angled triangle shape for the protrusion, and correspondingly adjusts the projection geometry. This parameter change ensures that during screwing back, the acute-angled protrusion engages properly with the projection without breaking or turning over, while still enabling effective motion transmission from the cover to the cap.
Solution Approach 2:
The patent employs asymmetric geometry where the protrusion and projection are designed with specific acute angles that are not symmetric. The acute-angled triangle protrusion is deliberately shaped to interact with the projection in a controlled manner during screwing back, creating an asymmetric engagement that prevents breakage while maintaining functional effectiveness.
2Ease of operation
If the projection is made with a less sturdy cross-section to enable interaction with the protrusion, then closure function is achieved, but the projection is more susceptible to breakage
Solution Approach 1:
The patent changes the geometric parameters of both the protrusion and projection to use acute angles. This parameter modification allows the projection to maintain adequate strength while still being able to interact with the protrusion during closure. The acute-angled geometry distributes forces more effectively, preventing breakage while preserving the closure function.
Data Source
Figure 1~2
Figure 3~5
AI summary
A safety capsule for a container, comprising: a cap (2) for closing the container, said cap comprising a thread (20) for connection to the container; a cover (3) for said cap (2), said cover (3) comprising a base (30) and a lateral wall (31 ) that extends from said base (30); said base (30) and said lateral wall (31 ) overlying said cap (2), said base (30) being at the opposite end with respect to a zone (4) of the capsule that comprises an intactness band (8) designed to be connected with the container; a press-fit engagement means (5) that sets said cap (2) and said cover (3) into operative communication, enabling transmission of motion from the cover (3) to the cap (2) for the purpose of making it possible to unscrew said cap (2); means (6) for preventing extraction of the cover (3) from the cap (2), comprising a first connecting means (61 ) for connecting the cover (3) to the cap (2) and that extends along a first imaginary annular line; the engagement means (5) and said first connecting means (61 ) being at least partly incorporated in said cap (2) and cover (3); means (27) for re-closing the cap (2) on the container after it has been opened, and comprising first and second flexible tabs (23, 32) incorporated on the cap (2) and on the cover (3), respectively.