Beverage Container Closure Assembly With Toggle Lever Resealing
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Solution Overview
Problem
Existing resealable closure devices for beverage containers, particularly those under pressure, are complex and require high forces for opening and closing, and often involve material separation, making recycling difficult.
Innovation Solution
A closure arrangement with a toggle lever mechanism comprising a lid element and a closure element, featuring a base part, tab, and lever element, where the components are pivotably connected via multiple axes, allowing for gas-tight resealing with reduced force requirements and recyclable design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex closure devices are used to achieve gas-tight sealing under pressure, then sealing reliability is improved, but device complexity increases
Solution Approach 1:
The closure device is divided into distinct functional components: a lid element with opening, a closure element with base part, tab, and lever element. The closure element is further segmented into pivotably connected parts (tab via first axis, lever element via second and third axes) that work together to achieve sealing through coordinated movement rather than a single complex structure.
Solution Approach 2:
The closure device employs dynamic elements that can pivot and rotate through multiple axes. The tab pivots via a first axis of rotation, while the lever element connects to the tab via a second axis and to the flap via a third axis. This multi-axis dynamic structure allows the closure to adapt to pressure changes and maintain gas-tight sealing through controlled movement rather than rigid complex geometry.
2Reliability
If high force is applied to open and close the closure, then sealing reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The multi-axis pivot mechanism transforms the user's opening force into controlled rotational movement through the tab and lever element. The first axis of rotation for the tab and the second and third axes for the lever element create a mechanical advantage system that reduces the force required by the user while maintaining reliable sealing through the coordinated motion of the closure components.
Solution Approach 2:
The closure element is designed to be captive on the lid element, with the lever element and tab working together to automatically position the flap in sealed and open states. The system uses the motion of the tab and lever element to self-position the sealing flap without requiring high external forces, making the operation easier while maintaining sealing reliability.
3Ease of manufacture
If material separation is used in closure design, then ease of manufacture is improved, but recyclability deteriorates
Solution Approach 1:
The closure element is designed as an integrated assembly where the base part, tab, and lever element are permanently attached through captive connections. The tab is pivotably connected to the frame part via a first axis, and the lever element is connected to the tab via a second axis and to the flap via a third axis. This merged design reduces the number of separate components that would need to be separated during recycling, while still allowing for easy manufacturing through modular assembly of the integrated elements.
Data Source
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AI summary
The invention relates to a closure assembly (1) for a beverage container (2), at least comprising: - a lid element (3) having an opening (4); and - a closure element (5) for repeatably closing the opening (4), the closure element being disposed on the lid element (3); wherein the lid element (3) has an outside (6) and an inside (7), and the opening (4) has an opening edge (8) and an opening plane (9) formed by the opening edge (8); wherein the closure element (5) has at least a base part (10), a tab (11) and a lever element (12); wherein the base part (10) comprises a frame part (13), which is disposed on the opening edge (8) and has a window (14), and a flap (15), which is pivotably connected to the frame part (13) in order to close the window (14) and thus the opening (4); wherein the tab (11) is pivotably connected to the frame part (13) by means of a first axis of rotation (16); and wherein the lever element (12) is connected to the tab (11) by means of a second axis of rotation (17) and to the flap (15) by means of a third axis of rotation (18). The invention also relates to a method for repeatably closing an opening (4) of a beverage container (2) by means of a closure assembly (1).