Beverage container lid assembly
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Solution Overview
Problem
Existing beverage container lids fail to effectively prevent spray-back of hot liquids when opening, leading to spills and inefficient sealing, especially when handling high-temperature beverages.
Innovation Solution
A lid assembly with a thread base, sip ring, and elevator assembly that includes seals and a tortuous flow path, allowing for controlled rotation and translation to seal the container, featuring a bayonet-style coupling and snap-fit mechanisms for secure closure and easy opening, reducing spray-back through strategically positioned seals and a variable slope track system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional lid is used for beverage containers, then the structure is simple and easy to manufacture, but it fails to effectively prevent spray-back of hot liquids when opening
Solution Approach 1:
The lid is divided into multiple functional segments: a stationary thread base, a rotatable sip ring, and an elevator assembly that moves vertically. This segmentation allows each component to perform its specific function - the thread base provides threading engagement, the sip ring controls rotation and sealing, and the elevator assembly manages the sealing surface movement - thereby preventing spray-back while maintaining reasonable structural complexity
Solution Approach 2:
The elevator assembly acts as an intermediary mechanism between the rotatable sip ring and the sealing function. When the sip ring rotates, the elevator assembly translates this rotational motion into vertical movement of the sealing surface, creating a controlled opening/closing action that prevents spray-back. This intermediary mechanism transforms simple rotation into complex sealing motion
2Reliability
If a lid with seals and tortuous flow path is implemented, then spray-back is prevented effectively, but manufacturing complexity increases
Solution Approach 1:
Seals are strategically positioned at specific locations within the lid assembly - between the elevator assembly and thread base, and at the sealing surface. This localized placement of sealing elements ensures effective sealing only where needed, preventing spray-back at the critical interface while keeping the rest of the structure relatively simple and easy to manufacture
Solution Approach 2:
The tortuous flow path incorporates curved and angled surfaces that guide liquid flow in a non-linear path from the container interior to the exterior. This curved geometry creates a controlled drainage path that prevents direct spray-back while maintaining manufacturability through standard molding techniques for curved surfaces
3Ease of operation
If bayonet-style coupling and snap-fit mechanisms are used, then secure closure and easy opening are achieved, but device complexity increases
Solution Approach 1:
The coupling mechanism transitions from a static connection to a dynamic one. The snap-fit mechanism allows the lid to be quickly attached and detached, while the bayonet-style coupling enables controlled rotation and engagement. This dynamic coupling system provides secure closure during use but allows easy opening when needed, balancing security with user convenience
Solution Approach 2:
The elevator assembly is pre-configured with tracking features that engage with the thread base before final sealing occurs. This preliminary engagement guides the sealing surfaces into proper alignment and maintains their relationship throughout opening and closing operations, ensuring reliable sealing without requiring complex real-time adjustment mechanisms
Data Source
AI summary
A lid assembly configured to be coupled to a beverage container, the lid assembly including a base defining an axis, a sip ring rotatable about the axis with respect to the thread base, and an elevator assembly coupled to the sip ring. The elevator assembly includes an upper elevator and a lower elevator coupled to the upper elevator for co-rotation with the upper elevator. Rotation of the sip ring rotation of the sip ring is configured to cause the elevator assembly to translate along the axis.