Rotating Straw Cup Lid Assembly for Leak-Resistant Drinking
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Solution Overview
Problem
Existing straw cup configurations are prone to leakage and difficult for small children to use due to alignment issues when switching between operative and stowed positions of the straw assembly, and they do not allow drinking without the straw assembly attached.
Innovation Solution
A lid assembly with a rotating cover and closure member that allows the straw assembly to be easily moved between operative and stowed positions, featuring a large opening for easy drinking without the straw and a secure attachment mechanism to prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lid assembly uses a narrow fold line to bend and pinch the straw assembly closed in the stowed position, then the straw assembly is enclosed and unavailable for drinking, but the cup becomes susceptible to leakage
Solution Approach 1:
The lid assembly is divided into separate functional components: a cover for enclosing the straw assembly and a closure member for sealing the liquid chamber. This segmentation allows the cover to bend the straw without compromising the seal, as the closure member independently maintains leak resistance through its engagement with the container rim.
Solution Approach 2:
The closure member acts as an intermediary between the cover and the container, providing a reliable sealing interface. While the cover handles straw enclosure through bending, the closure member ensures leak resistance by forming a secure barrier at the container opening, preventing liquid leakage independently of the straw assembly's position.
2Reliability
If the lid assembly requires proper alignment of two or more components to move the straw assembly between operative and stowed positions, then the straw assembly can be correctly configured, but small children may have difficulty achieving proper alignment
Solution Approach 1:
The cover features an asymmetric design with a single fold line positioned to create a natural bending path for the straw assembly. This asymmetric configuration eliminates the need for complex alignment between multiple components, as the fold line's specific position and orientation guide the straw assembly into the correct stowed configuration through simple rotational movement.
Solution Approach 2:
Instead of requiring active alignment of multiple components to achieve proper configuration, the design inverts the approach by using a fixed fold line that passively guides the straw assembly into the correct position. The fold line's predetermined geometry automatically ensures proper straw configuration regardless of the user's alignment precision, making operation simple for children.
3Reliability
If the lid assembly is specifically adapted to be used only with the straw assembly attached, then proper sealing is ensured, but the user cannot drink from the cup without the straw assembly
Solution Approach 1:
The lid assembly is designed with multi-functionality to support both straw cup and drinking cup configurations. The closure member provides universal sealing capability that works whether the straw assembly is attached or removed, while the cover can accommodate either the straw assembly or direct drinking through its opening, allowing the same lid structure to serve multiple purposes.
Solution Approach 2:
The lid assembly dynamically adapts its function based on the straw assembly's presence. When the straw assembly is attached, the cover encloses it in the stowed position; when removed, the same cover opening allows direct drinking. The closure member continuously maintains sealing functionality throughout these configuration changes, enabling seamless transition between drinking modes without compromising reliability.
Data Source
AI summary
A lid assembly for a cup is releasably attachable to a container. The lid assembly includes a closure member and a cover secured to the closure member. The cover is capable of rotating in a clockwise direction and a counter-clockwise direction relative to the closure member while the cover is secured to the closure member.