Lid for beverage containers
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Solution Overview
Problem
Existing beverage cup lids lack an effective mechanism to prevent liquid from spilling when tilted, and they often require users to locate a single drinking hole, which can be inconvenient, especially in situations like drinking while driving or in low light conditions.
Innovation Solution
A lid design featuring a lower lid with a perimeter skirt and an upper lid that rests on it, incorporating a stop mechanism with protrusions to allow liquid flow when tilted, and a design that provides multiple drinking holes around the perimeter, ensuring liquid can flow from all sides, preventing accidental spilling and allowing easy drinking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the upper lid is allowed to move away from the lower lid in response to liquid pressure, then liquid flow is enabled when tilted, but the upper lid may be expelled from the lower lid
Solution Approach 1:
The stop mechanism applies a preliminary counteracting force to prevent the upper lid from being expelled. The stop members are positioned to engage with the upper lid before it can be completely expelled, providing a preliminary anti-action that balances the liquid pressure force and maintains reliable retention while still allowing controlled movement for liquid flow.
Solution Approach 2:
The lid design transitions from a static fixed structure to a dynamic system where the upper lid can move relative to the lower lid. The stop mechanism enables controlled dynamic movement - allowing the upper lid to lift slightly in response to liquid pressure for flow capability, while the stop members provide dynamic restraint to prevent complete expulsion, achieving both ease of operation and reliability.
2Reliability
If the upper lid is fixed closely to the lower lid, then spill prevention is improved, but liquid flow and drinking capability are restricted
Solution Approach 1:
The lid system employs dynamic characteristics where the upper lid can move relative to the lower lid in response to liquid pressure. This dynamic capability allows the lid to maintain spill prevention in normal conditions while enabling liquid flow and drinking capability when tilted, resolving the contradiction between fixed security and operational flexibility.
Solution Approach 2:
The system changes the parameter of lid mobility from fixed to可控 movable. The stop mechanism defines specific movement parameters - allowing limited displacement for drinking flow while maintaining sufficient retention for spill prevention. This parameter change enables the lid to adapt between spill prevention mode and drinking flow mode.
3Adaptability or versatility
If the lid structure is made complex with multiple components, then functionality is improved, but assembly and disassembly difficulty increases
Solution Approach 1:
The lid is segmented into an upper lid and a lower lid with distinct functional zones. The stop mechanism is segmented into multiple stop members distributed around the perimeter. This segmentation allows each component to be manufactured independently using standard molding techniques, simplifying assembly while maintaining the complex liquid flow control functionality through the coordinated arrangement of segmented parts.
Solution Approach 2:
The stop members serve multiple functions: they limit upward movement of the upper lid, prevent complete expulsion, and guide the lifting motion for liquid flow. This multi-functionality reduces the need for additional separate components, maintaining ease of manufacture while achieving sophisticated liquid flow control through the versatile stop mechanism.
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 lid design effectively prevents spilling by allowing liquid to flow through multiple holes when tilted, ensuring easy access to the beverage from any side, enhancing usability and safety, especially in challenging situations.
Implementation Method 1
the upper lid returns to resting on the lower lid by gravity as the container is returned to vertical
Data Source
AI summary
A lid for a beverage container comprising a lower lid having a perimeter skirt adapted to secure the lower lid to an opening of the beverage container, a lip portion radially inward from the skirt and extending upward from the skirt and defining an inside surface, an annular portion radially inward from the lip portion and defining a plurality of openings through which liquid from the container may flow; an upper planar lid resting on the lower lid by gravity and having a perimeter edge that is sized to closely conform with the inside surface, the upper lid covering the annular portion as it rests on the lower lid, and a stop mechanism cooperating with the lower lid and the upper lid to limit the range of motion of the upper lid with respect to the lower lid, wherein the stop mechanism enables the upper lid to move away for a distance from the lower lid in response to pressure exerted upon the upper lid by liquid flowing out of the container through the openings as the container is tilted, and wherein the stop mechanism prevents the upper lid from being expelled from the lower lid, and wherein the upper lid returns to resting on the lower lid by gravity as the container is returned to vertical.