Child-Resistant Tobacco Container With Flexing Sidewall
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Solution Overview
Problem
Existing child-resistant containers for tobacco products are costly and complex to manufacture while ensuring that adults can easily access the contents while preventing children from doing so.
Innovation Solution
Designing a container with a body portion and cover that includes structural features such as channels and gaps allowing adult access through flexing, combined with interference or snap fits for secure engagement, and visual or tactile cues for easy opening by adults.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex child-resistant mechanisms are implemented, then child safety is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The container is divided into distinct functional elements: a body portion with an opening, a cover that selectively covers the opening, and a flex feature with specific structural segments (first and second portions) that can independently deform. This segmentation allows each element to perform its specific function while keeping individual components relatively simple to manufacture.
Solution Approach 2:
The flex feature introduces dynamic behavior to an otherwise static container structure. The first portion of the sidewall is designed to deform elastically in response to applied forces, allowing the container to transition between locked and unlocked states. This dynamic property enables child-resistant functionality without requiring complex mechanical mechanisms.
2Reliability
If complex child-resistant mechanisms are implemented, then child safety is improved, but manufacturing cost increases
Solution Approach 1:
The flex feature is integrated directly into the container's sidewall structure, merging the child-resistant mechanism with the container body itself. This eliminates the need for separate, additional child-resistant components that would increase manufacturing cost. The interference fit between the cover and body is also designed to work in conjunction with the flex feature, creating a unified system.
Solution Approach 2:
The flex feature utilizes changes in the physical parameters of the container wall (flexibility, elasticity) to achieve child-resistant functionality. By carefully selecting wall thickness, material properties, and geometric parameters of the first and second portions, the container achieves the desired force requirements without complex mechanisms. The design allows the same basic structure to serve both containment and child-resistant functions.
3Strength
If secure engagement between cover and body is implemented, then containment is improved, but ease of opening by adults deteriorates
Solution Approach 1:
The interference fit between the cover and body creates a preliminary locking action that prevents accidental opening by children. The geometric interlocking and frictional forces are designed to resist opening forces below a certain threshold. However, the flex feature provides a predetermined failure point that allows adults to overcome this preliminary anti-action by applying sufficient force to deform the flexible portion, thereby opening the container.
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 container effectively prevents children from opening the container while allowing adults to easily access the contents, reducing the risk of poisoning and maintaining a reasonable manufacturing cost and complexity.
Implementation Method 1
a portion of the primary wall flexes relative to the secondary wall upon application of a force thereto. The primary wall returns to an unflexed or neutral position after removal of the force.
Data Source
AI summary
The present disclosure relates to child resistant containers and methods of making same for products made or derived from tobacco, or that otherwise incorporate tobacco, and are intended for human consumption.