Lid for beverage containers
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Solution Overview
Problem
Existing beverage cup lids lack an efficient design that allows for easy drinking from multiple sides and prevents unintentional splashing, especially in situations where the user is distracted or in low light conditions, and they often require complex mechanisms for opening and closing.
Innovation Solution
The design incorporates a lower lid with a central horizontal wall and stop members that allow upward movement of the upper lid to facilitate liquid flow, combined with a snap-fit locking mechanism and a rotating upper lid that can be tilted to allow drinking from multiple sides while preventing splashing, featuring a secure closure mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional lid design with fixed closure is used, then the lid structure is simple, but it requires complex mechanisms to enable easy opening and closing while preventing splashing
Solution Approach 1:
The lid incorporates a movable upper lid that can tilt and rotate relative to the lower lid, transforming a static structure into a dynamic one. This movement allows the lid to automatically open for drinking and close for transport without complex mechanical actuators, resolving the contradiction between ease of operation and device complexity
Solution Approach 2:
The lid design enables automatic opening and closing through user actions such as tilting the cup or applying slight pressure, without requiring separate opening/closing mechanisms. The upper lid self-adjusts its position based on liquid pressure and user interaction, eliminating the need for complex closure mechanisms
2Adaptability or versatility
If the lid allows drinking from multiple sides, then versatility is improved, but the risk of unintentional splashing increases
Solution Approach 1:
The movable upper lid tilts in response to liquid pressure when the cup is tilted for drinking, dynamically adjusting its angle to maintain the drinking aperture at the appropriate position. This dynamic adjustment allows drinking from multiple sides while preventing splashing, as the lid automatically closes when not in use
Solution Approach 2:
The stop members positioned on the lower lid preemptively limit the upward movement of the upper lid, preventing it from opening too wide and causing splashing. This preliminary constraint ensures that even when the lid is tilted for drinking from various angles, the aperture remains controlled and splashing is prevented
3Object-affected harmful factors
If the upper lid is tightly sealed to prevent splashing, then splashing is prevented, but liquid flow is restricted
Solution Approach 1:
The upper lid dynamically adjusts its position and angle based on liquid pressure and user needs. When drinking is required, the lid tilts to create an aperture for liquid flow; when not in use, it closes tightly to prevent splashing. This dynamic behavior resolves the contradiction between preventing splashing and allowing liquid flow
Solution Approach 2:
The lid changes its operational state between open and closed positions, altering the parameter of aperture size. In the closed state, it prevents splashing; in the tilted open state, it allows liquid flow. This parameter change enables the lid to satisfy both contradictory requirements at different times
Data Source
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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.