Drinking Vessel Straw Self-Occlusion Design for Leak Prevention
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Solution Overview
Problem
Portable drinking vessels face issues with leakage during transit, difficulty in cleaning, and pressure imbalances leading to liquid splashing or vacuum formation, especially when handling hot liquids.
Innovation Solution
A drinking vessel design featuring a self-sealing straw that occludes fluid flow when closed, a two-way valve for pressure equalization, and separable components for easy cleaning and replacement, along with structural supports to guide the straw into a bent shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lid is used to seal the container, then leakage prevention is improved, but ease of operation deteriorates due to requiring two hands to unscrew
Solution Approach 1:
The lid assembly is segmented into multiple functional components: an outer lid, an inner cap, and a straw assembly. This segmentation allows the cap to be rotated independently to open/close the straw while the lid remains sealed, enabling one-handed operation while maintaining leak prevention.
Solution Approach 2:
The cap is designed with rotational movement capability, allowing it to dynamically transition between closed (sealing the straw) and open (allowing liquid flow) positions. This dynamic mechanism enables easy one-handed operation while maintaining reliable sealing when closed.
2Stability of the object's composition
If a one-way valve is used to prevent vacuum formation, then pressure balance is improved, but harmful effects worsen due to liquid splashing through the straw
Solution Approach 1:
A two-way valve is introduced as an intermediary component between the container interior and the straw. This valve selectively controls gas flow to balance pressure while blocking liquid flow, thereby preventing both vacuum formation and liquid splashing through the straw.
Solution Approach 2:
The two-way valve utilizes a flexible membrane or diaphragm that responds to pressure differential. This flexible element allows gas to pass when pressure is unbalanced while maintaining a seal that prevents liquid from passing through, solving both pressure balance and liquid containment requirements.
3Ease of manufacture
If the drinking vessel is made as a single inseparable unit, then manufacturing simplicity is improved, but ease of repair deteriorates when components become damaged
Solution Approach 1:
The drinking vessel is designed as an assembly of separable components including the container, lid, cap, and straw. This segmentation enables individual components to be removed, cleaned, or replaced independently while maintaining manufacturing efficiency through modular design.
Solution Approach 2:
The modular design allows damaged components such as the straw or cap to be easily removed and replaced without discarding the entire vessel. This extends the product lifecycle and reduces waste while maintaining manufacturing simplicity through standardized connection interfaces.
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
Prevents leakage during transit, ensures easy access to liquid, maintains pressure balance, and facilitates cleaning by allowing independent component replacement.
Implementation Method 1
the straw itself occludes fluid communication
Implementation Method 2
allowing air to come into the vessels to prevent a vacuum being formed
Data Source
AI summary
A drinking vessel including a straw; a lid comprising an opening operable to receive the straw; a container; and a cap operable to be in an open position or a closed position; wherein when the cap is in the open position, the straw is arranged to provide fluid communication between a user and the container through the lid, and wherein when the cap is in the closed position, the straw is urged by the cap into a bent shape such that the straw itself occludes fluid communication.