Two-Piece Child Resistant Lid with Push-Release Latch
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Solution Overview
Problem
As cannabis legalization increases, there is a growing need for child-resistant containers to safely store cannabis products, and existing solutions do not adequately address the requirement for secure access while being user-friendly for adults.
Innovation Solution
A child-resistant lid design featuring two interlocking components with multiple latch arrangements that require simultaneous use of multiple digits and both hands to open, ensuring secure closure and access control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple lid design is used, then ease of manufacture is improved, but child resistance is worsened
Solution Approach 1:
The lid is divided into two separate components (first lid component and second lid component) that must be manipulated together to open, rather than a single simple lid. This segmentation increases child resistance while maintaining manufacturing simplicity through modular design
Solution Approach 2:
Multiple latch arrangements are integrated into the lid structure, combining several latching mechanisms within the single lid assembly. This provides enhanced child resistance through multiple locking points while maintaining ease of manufacture by incorporating all latches into one integrated lid unit
2Reliability
If multiple latch arrangements are used, then child resistance is improved, but device complexity is worsened
Solution Approach 1:
The lid is segmented into two separate components, each containing simplified latch mechanisms. This distributes the complexity across two simpler parts rather than one complex single-component lid, maintaining child resistance while reducing individual component complexity
Solution Approach 2:
The latch arrangements are designed to automatically engage when the two lid components are brought together, eliminating the need for separate manual latching actions. This self-latching mechanism reduces operational complexity while maintaining high child resistance through multiple engagement points
3Ease of operation
If a resilient latch tongue is used, then ease of operation is improved, but manufacturing precision is worsened
Solution Approach 1:
The latch tongue is designed with resilient properties that allow it to flex and deform elastically during operation. This parameter change from rigid to flexible enables easier operation through finger pressure while the elastic recovery provides reliable latching, reducing the need for high manufacturing precision
4Reliability
If two-piece lid components are used, then child resistance is improved, but device complexity is worsened
Solution Approach 1:
The lid is divided into two separate components that must be coordinated to open, providing child resistance through multi-step manipulation. The segmentation is implemented in a way that each component remains relatively simple in design, balancing child resistance with manageable complexity
Solution Approach 2:
Multiple latch arrangements are combined within the two-component structure, with each component containing integrated latch mechanisms. This merging of multiple functions into the two-piece design provides enhanced security while avoiding the need for numerous separate parts, controlling overall device complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design effectively prevents young children from opening the container while allowing adults to access the contents easily, providing a secure and user-friendly solution for storing cannabis and other hazardous materials.
Implementation Method 1
the latch tongue is resiliently flexible in a bending direction that is transverse to the protruding direction
Implementation Method 2
the latch tongue being resiliently biased into a default position that biases the catch button into the latch hole
Data Source
AI summary
A child resistant lid features first and second lid components for covering respective fractions of a container opening. One or more latch arrangements releasably latch the components together in a closed state over the container opening, and each feature a latch hole defined in one of the components, and a latch tongue affixed to the other component. The tongue is sized and oriented to reach a position neighbouring the latch hole when the first and second lid components are mated together in the closed state. A catch button disposed on the latch tongue juts from a side thereof at a position that aligns with the latch hole in the closed state of the lid. The tongue is resiliently flexible in a bending direction, and resiliently biased into a default position that biases the catch button into the latch hole when the lid components are mated together.