Childproof Overcap Torque Transmission for ROPP Closures
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current Roll-on Pilfer Proof (ROPP) closures do not prevent unauthorized opening, particularly by children, despite providing tamper evidence, as they lack childproof features to secure potentially hazardous contents within bottles.
Innovation Solution
A childproof overcap is designed to be used with ROPP closures, which can be positioned over the closure to selectively transmit torque, requiring specific knowledge to open the bottle, featuring a deflectable top portion and a knurled pattern for engaging the ROPP closure to break the serrated band and open the bottle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ROPP closure is used to seal a bottle, then the bottle can be selectively opened and closed with tamper evidence, but the closure does not prevent unauthorized opening by children
Solution Approach 1:
The overcap is positioned over the ROPP closure, creating a nested configuration where the overcap encloses the closure. The overcap includes an inwardly extending lower end that nests within the ROPP closure structure to secure it in place. This nesting arrangement adds a childproof barrier while maintaining the underlying ROPP closure's tamper evidence functionality.
Solution Approach 2:
The closure system is divided into separate functional components: the ROPP closure provides tamper evidence through the pilfer band and serrated band, while the overcap provides childproof protection through its engagement features. This segmentation allows each component to specialize in one protective function without compromising the other.
2Object-affected harmful factors
If an overcap is added to provide childproof protection, then unauthorized access is prevented, but the device complexity increases
Solution Approach 1:
The overcap includes a deflectable top portion that can move between engaged and disengaged positions. When force is applied, the top portion deflects to allow the inwardly extending lower end to engage with the ROPP closure. This dynamic feature enables simple manual operation while maintaining a secure locked state, reducing the perceived complexity for the user.
Solution Approach 2:
The overcap is formed from a flexible material that allows the top portion to deflect during engagement and disengagement. This flexibility enables the overcap to accommodate the engagement features of the ROPP closure without requiring complex mechanical components, simplifying the overall structure while maintaining childproof functionality.
3Object-affected harmful factors
If the overcap requires specific knowledge to open, then childproof protection is enhanced, but the ease of operation is reduced
Solution Approach 1:
The overcap engagement system is designed to be self-explanatory through its physical structure. The inwardly extending lower end and deflectable top portion create a natural engagement mechanism that users can understand and operate without special instructions. The mechanical interaction provides tactile feedback that guides the user through the opening process.
Solution Approach 2:
The overcap is pre-positioned in an engaged state during bottling, requiring the user to perform the disengagement action. The deflectable top portion is pre-configured to move when force is applied, automatically transitioning from the locked to unlocked state. This preliminary positioning maintains childproof protection while simplifying the user action to a single pulling motion.
Data Source
AI summary
Systems, methods, and apparatuses for sealing bottles with a Roll-on Pilfer Proof (ROPP) closure and a childproof overcap are provided. More specifically, the present disclosure relates to an overcap that can be placed onto or formed onto the ROPP closure. The overcap has a retainer that secures the overcap to the ROPP closure and allows the overcap to move relative to the ROPP closure in a longitudinal axis. The overcap moves between a first position or mode of operation where the overcap can rotate about the ROPP closure and a second position or mode of operation where the overcap engages the ROPP closure to transmit a twisting or torque force to the ROPP closure and open the bottle.