Sippy Cup Stacking System with Integrated Lid Retention
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Solution Overview
Problem
There is a lack of a convenient, clean, practical, and durable sippy cup stacking system where each sippy cup in the stack can have its own lid securely attached while stacked.
Innovation Solution
A cup stacking system where each cup has a removable lid with a protruding spout and a locking stem that mates with a socket on the bottom of another cup, allowing the cups to be stacked securely with their lids attached.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If sippy cups are stacked with lids removed for storage, then storage space efficiency is improved, but the lids become loose and may be lost or contaminated
Solution Approach 1:
The lid is nested within the cup structure through an integrated retention system. The lid's rim engages with the cup's upper peripheral surface, and the engagement feature (protrusion on lid, recess on cup) locks the lid in place, allowing the lid to be stored with the cup without becoming loose or lost.
2Reliability
If multiple sippy cups are stacked individually with separate lids, then each cup maintains its lid security, but storage space efficiency deteriorates
Solution Approach 1:
The lid and cup are merged into a single storage unit through the engagement feature. The lid's protruding engagement feature fits into the recess on the cup's upper peripheral surface, combining the lid and cup into one secure assembly that can be stacked with other similar assemblies, improving space efficiency while maintaining lid security.
3Volume of moving object
If sippy cups are stacked in a nested configuration without integrated lid retention, then storage compactness is improved, but the system becomes messy and impractical
Solution Approach 1:
The retention system is segmented into distinct functional elements: the rim engagement surface on the cup, the protruding engagement feature on the lid, and the recess on the cup's upper peripheral surface. This segmentation allows for a clean, organized stacking system where each component has a specific role in securing the lid and enabling compact storage.
4Reliability
If a locking mechanism is added to secure lids on stacked cups, then lid attachment security is improved, but device complexity increases
Solution Approach 1:
The engagement feature serves multiple functions: it secures the lid to the cup, enables the cup to be stacked with other cups, and provides a clean organized appearance. The rim engagement surface and recess work together to accomplish both lid retention and stacking functionality, eliminating the need for separate locking mechanisms.
Data Source
AI summary
A sippy cup stacking system comprising multiple substantially identical sippy cups having sippy spout lids that can be mated with the bottom of a first cup while attached to the top of a second cup. Each cup includes a bottom with an annular recess containing a central locking plug capable of mating with a central locking stem protruding from a lid on another cup. The sippy spout on each lid is radially offset from the locking stem and fits into and can move circumferentially in the annular recess on the bottom of the cup to which it is being mated, until the spout is fully enclosed by the bottom of the mated cup.