Hinged Container Cap with Frangible Bridge and Tamper Rod
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Solution Overview
Problem
Existing container caps with removable domes face issues of contamination, tampering, and environmental pollution due to the dome becoming detached, while also obstructing access to the drink when the lid is rotated open.
Innovation Solution
A cap with a hinged lid design that remains integral to the container, featuring a cylindrical base with a smaller pouring portion and a snap-engaged lid connected by frangible bridges and a tamper-proof rod, allowing easy access and preventing detachment, with sealing mechanisms to ensure the beverage's integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the dome is made removable for easy access to the drink, then ease of operation is improved, but the dome becomes detached and causes environmental pollution
Solution Approach 1:
The cap is divided into a base and a lid connected by a hinge, allowing the lid to be segmented away from the mouthpiece while remaining attached to the cap structure. This enables easy access to the drink while preventing the lid from becoming completely detached and polluting the environment.
Solution Approach 2:
The hinge mechanism allows the lid to dynamically change position between covering the mouthpiece and being rotated away. This dynamic positioning provides easy access when needed while maintaining attachment to prevent environmental pollution.
2Ease of operation
If the lid is rotated open for easy drinking, then ease of operation is improved, but the rotated lid obstructs access to the mouthpiece
Solution Approach 1:
The hinge allows the lid to rotate out of the vertical dimension (where it would obstruct the mouthpiece) into a horizontal or lateral dimension. This dimensional change enables easy drinking access while positioning the lid away from the mouthpiece opening.
3Ease of operation
If the upper dome is detached for easy access, then ease of operation is improved, but tampering cannot be detected
Solution Approach 1:
The frangible bridge is pre-designed to break at a specific point, creating a tamper-evident feature before use. When the lid is first opened, the frangible bridge breaks irreversibly, providing preliminary evidence that the cap has been opened and cannot be easily reclosed without detection.
4Reliability
If a protective dome is added for tamper protection, then reliability is improved, but the dome becomes detached and causes contamination
Solution Approach 1:
The protective functions are merged into the hinged lid structure itself, which remains attached to the cap. The lid provides both tamper protection through its intact state and prevents contamination by staying connected, eliminating the need for a separate removable dome that could detach and cause pollution.
Data Source
AI summary
A cap for a container with a hinged lid includes a first part and a second part that are snap-associated. The first part has a lower cylindrical portion and an upper cylindrical portion, and the second part includes a covering lid having an annular portion and a lid portion and a hinge arrangement therebetween, which includes a strip arranged in a window opening formed in the side surface of the lid portion and open towards the annular portion. The strip has weakened foldable end areas connected to the annular and lid portions, and a folding invitation line that divides the strip into two portions with a central recess therebetween. Folding invitation lines are also provided between the two portions of the strip and an end edge of the opening in the lid portion.