Rotating Blister Child-Resistant Pack With Locking Boss
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Solution Overview
Problem
Existing child-resistant packaging solutions are not consistently effective in preventing access by children while ensuring easy access for adults.
Innovation Solution
A blister-type child-resistant container is designed with a rotatable blister sandwiched between a front card and a back card, featuring a locking boss mechanism that allows the blister to rotate only when the locking boss is depressed, thereby preventing unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a child-resistant locking mechanism is implemented, then child safety is improved, but ease of operation for adults deteriorates
Solution Approach 1:
The locking boss is designed to be movable rather than fixed. It can be depressed by adult fingers to unlock the container, but remains protruding to prevent child access. The dynamic position of the locking boss (protruding vs. depressed) enables the container to switch between locked and unlocked states, resolving the contradiction between child safety and adult ease of use.
Solution Approach 2:
The locking mechanism changes the physical state of the locking boss from a protruding position (blocking access) to a depressed position (allowing access). This parameter change in the locking boss position enables the container to transition between secure and accessible states, addressing both child safety and adult convenience requirements.
2Ease of operation
If a rotatable blister design is used, then ease of access for adults is improved, but device complexity increases
Solution Approach 1:
The blister is designed to be rotatable rather than fixed. Adults can rotate the blister to access different compartments, providing ease of access. The rotatable feature adds minimal complexity while significantly improving usability compared to fixed blister designs.
Solution Approach 2:
The container is divided into multiple compartments within the blister, each potentially containing different products. The segmentation allows selective access to individual compartments through rotation, improving ease of access without requiring a completely complex multi-container system.
3Reliability
If a locking boss mechanism is added, then child resistance is improved, but manufacturing complexity increases
Solution Approach 1:
The locking boss is integrated into the blister structure rather than being a separate component. The tab that connects the locking boss to the blister body is formed as part of the blister molding process. This merging of the locking mechanism into the existing blister structure minimizes additional manufacturing complexity while achieving effective child resistance.
Data Source
AI summary
A child resistant container comprising a blister and a sleeve. The blister comprises a plurality of compartments arranged radially around a centrally disposed hub. Each compartment defines a cavity for holding contents. The container is a “dial pack” type container in that the blister can be rotated with respect to the sleeve to expose each cavity in turn.