Sliding Lid Locking Assembly with Depressible Wall for Child-Resistant Closure
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Solution Overview
Problem
Existing child-safe locking mechanisms, such as the 'push and twist' style caps, have become familiar to young children, reducing their effectiveness over time.
Innovation Solution
A locking assembly with slidable engagement and inwardly depressible walls that require cognitive and dexterity skills to transition between lid configurations, using shaped portions and locking nubs for secure closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional child-safe locking mechanisms like push-and-twist caps are used, then the locking mechanism is effective at preventing young children from opening containers, but children eventually become familiar with the mechanism which reduces its long-term effectiveness
Solution Approach 1:
The locking mechanism transitions from a static conventional design to a dynamic system where the lid can be in multiple positions (locked, unlocked, partially open) and the locking nub can be in different states (engaged, disengaged). The container wall can be dynamically deformed inwardly to change the locking state, creating a more adaptable and less predictable mechanism for children.
Solution Approach 2:
The invention changes the operational parameters of the locking mechanism by introducing sliding movement along an axis, requiring simultaneous coordination of multiple actions (sliding, depressing wall). This changes the physical state transitions and operational characteristics, making it harder for children to learn and master the mechanism over time.
2Reliability
If a locking mechanism requires cognitive and dexterity skills beyond young children's abilities, then child safety is improved, but the mechanism may become more complex and harder for adults to use
Solution Approach 1:
The locking action is segmented into distinct functional elements: the sliding movement of the lid, the deformable container wall, and the locking nub engagement. This segmentation allows each element to contribute to the overall security while maintaining individual simplicity, making the combined mechanism both secure and usable.
Solution Approach 2:
Instead of requiring complex multi-step actions to open, the mechanism allows the lid to be easily slid to an unlocked position. The complexity is inverted by making the closing/locking action require coordination while the opening action becomes simpler, reversing the traditional approach where opening requires more effort.
3Reliability
If locking nubs are disposed on the container wall, then the locking mechanism provides secure closure, but the container wall structure becomes more complex
Solution Approach 1:
The container wall serves multiple functions: it contains the locking nubs, provides the deformable surface for operation, and maintains structural integrity. This multi-functionality reduces the need for separate components, keeping the overall structure relatively simple while achieving secure closure.
Solution Approach 2:
The locking nub is merged directly with the container wall structure rather than being a separate attached component. The wall's deformability is merged with the locking function, creating an integrated system where the wall itself participates in the locking and unlocking mechanism, reducing component count and structural complexity.
Data Source
AI summary
A locking assembly for releasably-locking a lid to a container so that the lid covers an opening of the container, the locking assembly including: shaped portions disposed on the lid and container that are configured to allow slidable engagement of the lid relative to the container along a movement axis between a first configuration in which the lid covers the opening in to a second configuration in which the lid does not cover the opening; a locking nub disposed on a wall of the container; a nub receiving portion disposed on the lid; and wherein when the lid and container are slidably engaged together in the first configuration, the locking nub disposed on the container is received within the nub receiving portion disposed on the lid so as to restrict sliding movement of the lid relative to the container along the movement axis from the first configuration in to the second configuration, and, wherein the wall of the container is inwardly depressible so as to move the locking nub outwardly of the nub receiving portion whereby the lid is then able to be slidably moved relative to the container along the movement axis from the first configuration in to the second configuration.