Lid assembly and valve for a lid assembly
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Solution Overview
Problem
Vacuum pressure actuated drinking cup assemblies face challenges in balancing sealing and ease of valve opening, leading to potential leakage and difficulties in cleaning and disassembly.
Innovation Solution
A lid assembly with a cap, valve member, and retainer that includes multiple seals and a flap mechanism, allowing for selective isolation of vent and drink passages, enabling easy opening with minimal suction pressure while maintaining a secure seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a strong seal is provided by the valve, then leakage is prevented, but a relatively large vacuum pressure is required to open the valve
Solution Approach 1:
The valve member is divided into multiple functional sections with three separate seals (first seal around fluid passage, second seal on flap distal edge, third seal isolating drink passage). This segmentation allows each seal to perform its specific function independently, achieving reliable sealing while enabling the valve to open with minimal suction pressure through the coordinated action of separated sealing zones.
2Ease of operation
If the valve opens easily with minimal suction pressure, then ease of operation is improved, but sealing effectiveness may be compromised
Solution Approach 1:
Different regions of the valve member have specialized sealing properties tailored to their specific functions. The first seal provides sealing around the fluid passage, the second seal on the flap provides localized sealing at the critical opening point, and the third seal provides sealing for the drink passage. This local quality optimization ensures easy opening while maintaining sealing effectiveness in each critical zone.
3Stability of the object's composition
If the valve assembly is integrated into the cap, then structural stability is improved, but cleaning and disassembly become difficult
Solution Approach 1:
The valve member is designed with dynamic characteristics that allow it to be firmly positioned during operation (providing structural stability) while enabling easy removal when needed. The valve member can be selectively removed from the cap for cleaning and maintenance, and the retainer mechanism allows for intuitive assembly and disassembly. This dynamic design resolves the contradiction between structural integration and ease of maintenance.
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
The solution effectively prevents spills when the cup is tipped and allows easy cleaning and disassembly, ensuring a secure seal with reduced vacuum pressure requirements.
Implementation Method 1
The vacuum pressure is applied to the interior of the cup and moves or deforms the valve in such a way so that the contents of the cup can flow through a drink passage formed in the spout
Data Source
AI summary
A lid assembly for a drink container includes a cap, a wall and a valve member. The cap fits onto a drink container and includes a spout defining a drink passage and a vent opening offset from the drink passage. The wall depends downwardly from a lower surface of the cap and surrounds the drink passage and the vent opening. The valve member is selectively receivable within a cavity defined by the wall. With the valve member received in the cavity and the cap fit onto the drink container, a first seal isolates the vent opening from the drink passage, a second seal is movable with respect to the wall and selectively contacts the wall to selectively isolate the vent opening from liquid in the drink container, and a third seal selectively isolates the drink passage from liquid in the drink container.