Safety Lid with Visual Indicator Ring to Prevent Cup Spills
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Solution Overview
Problem
Conventional cup lids often fail to secure properly to the cup, leading to spills when the cup is lifted or tilted, posing a risk of hot liquids causing injury and damage.
Innovation Solution
A safety lid design featuring a plastic lid with an outer circumference wall and flat roof, incorporating a red circular line that is covered by a safety ring when properly installed, along with protruding bumps and indents for tactile verification, ensuring secure attachment and preventing spills.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional plastic lid with channel is pressed onto the cup edge, then the lid can be easily attached, but the lid may not be totally secured and can come off when the cup is lifted or tilted
Solution Approach 1:
The safety ring is nested within the channel structure of the lid, with the ring fitting inside the channel and engaging with the cup's rim. This nested configuration allows the safety ring to provide additional securing force while maintaining the simple press-fit attachment method of the original lid channel design.
Solution Approach 2:
The invention adds a vertical dimension to the lid-cup connection by introducing the safety ring that extends downward from the lid's outer wall into the channel, engaging with the cup's rim from below. This vertical engagement complements the horizontal press-fit connection, creating a multi-dimensional securing mechanism that prevents lid detachment.
2Device complexity
If no visual indication is provided, then the lid design remains simple, but there is no way to verify if the lid is properly attached
Solution Approach 1:
The safety ring incorporates a colored indicator (red or orange) that is visible when the lid is improperly attached and disappears or changes appearance when the lid is correctly secured. This color-based visual feedback system allows users to quickly verify proper attachment without adding complex mechanical verification mechanisms to the lid structure.
Solution Approach 2:
The colored indicator on the safety ring serves as an intermediary element that communicates the attachment status information to the user. Rather than requiring direct observation of the lid-cup connection, the color-coded indicator mediates this information, providing clear visual feedback about whether the lid is properly secured.
3Reliability
If the lid channel fits closely to the cup top, then the lid can be secured, but the lid may still come off when the cup is lifted by the lid or when the cup falls over
Solution Approach 1:
The safety ring acts as a preventive measure that is already in place before any spillage or injury can occur. By providing enhanced securing engagement between the lid and cup, the safety ring preemptively prevents the scenarios where the lid might detach and cause harmful effects, rather than responding after a problem occurs.
Solution Approach 2:
The safety ring applies a preliminary counteracting force against the potential detachment of the lid. The ring's engagement with the cup's rim creates a mechanical barrier that opposes any forces attempting to separate the lid from the cup, thereby preventing spillage and injury before they can happen.
Data Source
AI summary
The safety lid can be used on cups. The lid has an outer wall and a flat roof near the outer wall. A red line is placed on the lower outer wall and on the outer edge of the roof. The outer wall and a safety ring thereon will have at least one or more complementary dents/indents. The safety ring is L-shaped and fits closely about the outer wall and roof. In order to secure the safety lid, the ring is pressed downward onto the lid on the cup. The red line on the roof of the lid is covered by the short leg of the L-shaped safety ring and the red line on the lower outer wall is covered by a lower wall section of the safety ring. Locking flaps or triangles may also be included to engage the cup.