Multi-Piece Closure Pull Tab Asymmetry for Cover Removal
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Solution Overview
Problem
Existing multi-component closures with pull rings face challenges in efficient detachment of covers while maintaining secure coupling to container necks, often requiring complex mechanisms and user-friendly grasping of pull rings that are not adequately addressed in current designs.
Innovation Solution
A closure system comprising an overcap with a pivotally coupled lid, an insert with a detachable cover, and a pull tab that circumferentially extends around a non-coaxial axis, allowing for frictional engagement and easy removal of the cover while maintaining secure attachment to the container neck through helical threading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pull ring is provided for removing the detachable cover, then ease of operation is improved, but the pull ring must be adequately grasped by users which complicates the design if not properly addressed
Solution Approach 1:
The pull ring is positioned asymmetrically relative to the container neck and closure components. Specifically, the pull ring is located at a position that is not symmetric with respect to the longitudinal axis of the container neck, allowing users to easily grasp and manipulate it while maintaining simple overall structure. This asymmetric positioning resolves the contradiction by providing intuitive user interaction without requiring complex symmetric mechanisms.
2Ease of operation
If the pull ring is positioned for easy grasping, then ease of operation is improved, but structural integrity may be compromised if not properly integrated
Solution Approach 1:
The pull ring is merged with existing closure components rather than being a separate attached element. The pull ring is integrated into the relationship between the detachable cover, insert, and overcap, utilizing the existing structural framework. This merging approach allows easy user grasping while maintaining structural integrity, as the pull ring functionality is achieved through the existing mechanically robust connections between closure components.
3Reliability
If complex mechanisms are used for cover detachment, then reliability of secure coupling is improved, but ease of operation deteriorates
Solution Approach 1:
The pull ring functionality is extracted as a distinct, simple grasping element that is positioned separately from the main coupling mechanism between the overcap and container neck. The secure coupling is maintained through the frictional engagement and mechanical interference fit between the insert and overcap components, while the pull ring provides a simplified, separate interface for user interaction. This extraction resolves the contradiction by decoupling the security function from the operation function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates user-friendly and secure removal of the cover by providing a simple and intuitive mechanism for decoupling, ensuring the contents remain sealed until intended access, with improved user interaction and structural integrity.
Implementation Method 1
The insert interfaces with the body thereby frictionally engaging the insert with the overcap
Data Source
AI summary
A closure is provided for coupling to a container. The closure includes an insert and an overcap affixed to a container neck of a container. The insert includes a cover removably coupled to the insert. The insert may includes a pull tab coupled to the cover, the cover detaching from the insert in response to a user pulling on the pull tab.