Blister Unit Removable Clamping Mechanism
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Solution Overview
Problem
There is a need for a removable attachment mechanism that ensures blister units are securely and childproofly attached to a support unit in packaging units, which must comply with both European and American childproof and senior-friendly standards, while allowing easy attachment and detachment for convenient use.
Innovation Solution
The blister unit features at least one locking opening, and the support unit forms a surrounding shell with a raised edge and protruding fastening elements that engage into the locking opening, creating a removably clamped connection that requires deliberate action to release, making it difficult for children to access but easy for adults to manage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the blister unit is securely attached to the support unit using a fixed attachment mechanism, then the childproof quality is improved, but the ease of operation deteriorates because the blister unit cannot be removed or reused
Solution Approach 1:
The attachment mechanism transitions from a fixed state to a removable state through a deliberate opening action. The blister unit is initially secured to the support unit, then can be intentionally removed by performing the opening operation, enabling both secure attachment and controlled detachment
Solution Approach 2:
The packaging system is divided into separable components: the support unit and the blister unit. The blister unit can be detached from the support unit while maintaining the integrity of both components, allowing for selective removal and potential reuse of the support unit
2Ease of operation
If the blister unit is made removable from the support unit, then the ease of operation is improved, but the childproof quality deteriorates because children can easily remove and access the blister unit
Solution Approach 1:
The attachment mechanism requires a deliberate opening action to transition from a secured state to a removed state. This dynamic process ensures that casual or accidental removal by children is prevented, while intentional removal by adults remains feasible
Solution Approach 2:
The support unit acts as an intermediary between the childproof requirement and the ease of operation requirement. It provides a secure mounting structure that controls the removal process, mediating between the need for secure attachment and the need for convenient access
3Reliability
If a complex fastening mechanism is used to secure the blister unit, then the childproof quality is improved, but the device complexity increases making it harder to manufacture and operate
Solution Approach 1:
The fastening function is segmented into simple geometric features: locking openings in the blister unit and corresponding fastening elements in the support unit. This segmentation avoids the need for complex integrated mechanisms while achieving the childproof effect
Solution Approach 2:
The fastening mechanism is extracted from the blister unit itself and implemented as separate fastening elements on the support unit. This extraction simplifies the blister unit design while maintaining the fastening function through the interaction between the two components
Data Source
AI summary
A packaging unit (13) comprises a blister unit (1) with cavities (5) forming receiving chambers (6) accommodating a fill material, particularly a pharmaceutical active substance formulation, and a support unit (7) that supports the blister unit (1) and is releasably attached thereto, of a size corresponding to the blister unit (1). The blister unit (1) has at least one locking opening (3) and the support unit (7) forms a support shell (12) that surrounds the blister unit (1) with a raised edge (8), at least one fastening element (10a, 10b) of said support shell (12) protruding from the base surface (9) thereof and engaging into the locking opening (3) and holding the blister unit (1) removably clamped in the support shell (12).