Bayonet Childproof Cap with Deformable Opening Regions
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Solution Overview
Problem
Existing childproof packaging solutions for containers are often complex, costly, and fail to meet regulatory standards, lacking robustness and simplicity in design.
Innovation Solution
A product packaging and dispensing device featuring a bayonet-type childproof locking system with a closure cap that requires manual pressure to rotate, utilizing a simple and robust design with minimal parts, where second ribs lock against lugs in a closed position and deformable regions facilitate easy opening, eliminating the need for additional user manuals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing childproof packaging solutions are used, then child safety is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the child safety locking function with the normal cap closure function into a single integrated cap structure. The first ribs and second ribs are both part of the same cap, working together with the neck and container to provide both secure closure and childproof protection, eliminating the need for separate safety mechanisms.
Solution Approach 2:
The cap serves multiple functions: it provides normal closure (first ribs engaging with neck), childproof protection (second ribs blocking access to dispensing mechanism), and easy opening for adults (deformable regions allowing cap removal). This multi-functional design achieves child safety without adding separate dedicated safety components.
2Reliability
If existing childproof packaging solutions are used, then child safety is improved, but manufacturing cost increases
Solution Approach 1:
The child safety features are integrated into the cap molding process itself. The first ribs and second ribs are formed as integral parts of the cap during a single molding operation, eliminating the need for separate safety components and reducing assembly steps, thereby lowering manufacturing cost.
Solution Approach 2:
The cap includes deformable regions with modified wall thickness or material properties that allow easy opening when pressure is applied. This parameter change enables the cap to be opened by adults without requiring complex tools or mechanisms, simplifying the opening system while maintaining child safety.
3Reliability
If a robust locking system is implemented, then child safety is improved, but ease of operation decreases
Solution Approach 1:
The cap has different structural properties in different regions: the main body is rigid to maintain locking engagement, while specific deformable regions have modified properties (reduced wall thickness or different material) that allow easy opening when pressure is applied. This local differentiation enables both secure locking and easy opening.
Solution Approach 2:
The deformable regions are designed with changed physical parameters (wall thickness, material composition) that allow the cap to be opened by applying pressure, typically with a fingernail or coin. This parameter change provides an easy opening mechanism for adults while maintaining child safety through the rib locking system.
Data Source
AI summary
The invention relates to a product packaging and dispensing device (10) which comprises a container (12) containing the product to be dispensed; a sub-assembly attached to the container (12) and comprising a grooved neck (14), a pump (16) and a push member (18) actuating the pump (16) by manual pressure; and a closure cap (20) having a first ribbed cylindrical wall (200) engaging on the grooved neck (14), thus forming a bayonet-type connection system. The sub-assembly has an annular surface (140) provided with at least one lug (142). The cover (20) has a second wall (300) provided with at least one axial rib (304) abutting against the at least one lug (142) when the cover (20) is in a closed position, The second wall (300) has two diametrically opposed regions (306) that can be deformed by manual pressure so as to allow rotation of the cover (20) by releasing the at least one rib (304) from the at least one lug (142).