Valve assembly
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Solution Overview
Problem
Existing no-spill infant drinking cup valve assemblies face issues with complex manufacturing processes, leakage due to flexible components deformation, and user inconvenience in operation and cleaning, as well as limitations in flow rate and seal durability.
Innovation Solution
A foldable valve assembly with interlocking arms and flexible diaphragms that can be molded in a single part, featuring a conduit with bends to reduce liquid momentum and improve sealing, and a design that allows easy assembly and disassembly for cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If valve assembly components are moulded separately and assembled during manufacture, then manufacturing flexibility and material selection are improved, but manufacturing complexity and production time increase
Solution Approach 1:
The patent merges multiple previously separate valve components (closure element, stem, channel structure) into a single integrated valve assembly that can be moulded as one piece. This eliminates the need for separate moulding and assembly operations while maintaining the functional benefits of having distinct components, thereby reducing manufacturing complexity without sacrificing adaptability
2Quantity of substance
If the stem is made narrower to allow more liquid flow around it, then flow rate is improved, but closure force on the mushroom head decreases making sealing difficult
Solution Approach 1:
The patent segments the stem into two functional parts: an upper wider section that provides sufficient closure force to seal the mushroom head, and a lower narrower section that allows adequate liquid flow. This segmentation enables both the stem to maintain sealing pressure and permit sufficient flow rate simultaneously, resolving the contradiction between flow rate and sealing reliability
3Quantity of substance
If the mushroom head and liquid channel are made larger to accommodate more flow, then flow rate is improved, but the head becomes too flexible to cap the channel inlet effectively
Solution Approach 1:
The patent applies local quality by making the mushroom head non-uniform in thickness: the central portion is thicker to provide rigidity for effective channel capping, while the peripheral portions are thinner to allow flexibility for opening and closing movements. This localized variation in thickness enables the head to maintain sealing precision while accommodating larger flow rates
4Ease of operation
If flexible components are made more compliant to reduce user suction effort, then ease of operation is improved, but susceptibility to deformation from liquid impact increases causing leakage
Solution Approach 1:
The patent employs a mushroom head made of flexible material that functions as a deformable sealing element. The flexibility of this shell allows it to deform easily under user suction to open the valve, while its elastic properties enable it to return to its original sealing position. The design optimizes the flexibility-to-strength ratio to prevent permanent deformation from liquid impact
5Productivity
If the valve assembly is designed as a single integrated part, then manufacturing time and assembly steps are reduced, but cleaning accessibility and disassembly ease deteriorate
Solution Approach 1:
The patent incorporates a removable cap structure that allows the valve assembly to transition between a closed integrated state during manufacturing and an open disassembled state during cleaning. The cap can be easily removed to provide access to internal channels and components for cleaning, then reattached to restore the integrated sealed structure, thus maintaining manufacturing efficiency while enabling cleaning accessibility
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 simplifies manufacturing, enhances the seal durability, reduces leakage, and improves user convenience by allowing efficient fluid flow without requiring excessive suction, while maintaining the assembly's structural integrity and ease of cleaning.
Implementation Method 1
a flexible component designed to move in response to a pressure differential
Implementation Method 2
a conduit with bends to reduce liquid momentum
Data Source
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AI summary
There is described a valve assembly (100) for a drinking vessel. The valve assembly comprises a first arm having a first valve portion and a second arm having a second valve portion. Each valve portion has a respective aperture for fluid flow, and wherein the valve assembly is foldable from an unfolded state to a folded state such that the first arm is moveable relative to the second arm. Being foldable, allows the first valve portion to be engaged with the second valve portion to form in the folded state a fluid flow path between the first and second apertures.