Child-Resistant Safety Bottle With Conical Insert
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Solution Overview
Problem
Existing safety bottles for caustic liquids are not effectively leakproof and childproof, posing risks of accidental spills and injuries, especially when used by children, as they lack a secure closure mechanism that ensures the liquid is applied precisely and safely.
Innovation Solution
A safety bottle design featuring a child-resistant closure with a conical protective insert that keeps the liquid substance below the lowest point, preventing leakage even when the bottle is open, and a spatula application device for precise application, made from dimensionally stable materials like HDPE or glass to prevent deformation and ensure secure sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional bottle closure is used, then the bottle can be easily opened, but the liquid can leak out and be accessed by children
Solution Approach 1:
The closure is divided into multiple functional parts: an outer cap for child-resistant sealing, an inner cap for secure sealing, and a spatula device for controlled application. This segmentation allows each component to perform its specific function - the outer cap prevents unauthorized opening, the inner cap ensures leakproof sealing, and the spatula enables precise liquid application.
Solution Approach 2:
The closure components are nested within each other - the inner cap is positioned inside the outer cap, and the spatula device is integrated within the closure assembly. This nested structure allows the bottle to maintain a compact form while incorporating multiple safety and functionality layers, where the spatula can be stored within the closure when not in use.
2Object-affected harmful factors
If the bottle is made child-resistant, then children cannot access the liquid, but the bottle may become more complex
Solution Approach 1:
The child-resistant outer cap, sealing inner cap, and application spatula are merged into a single integrated closure assembly. This combination achieves child safety, leakproof sealing, and precise application functionality without requiring separate components, thereby reducing overall device complexity while maintaining comprehensive safety features.
Solution Approach 2:
The closure assembly serves multiple functions simultaneously: the outer cap provides child-resistant protection, the inner cap ensures leakproof sealing, and the integrated spatula enables precise liquid application. This multi-functionality eliminates the need for separate devices, simplifying the overall system while achieving comprehensive safety and usability goals.
3Quantity of substance
If the liquid level is high, then more liquid is available for application, but leakage risk increases
Solution Approach 1:
The conical protective insert is pre-positioned in the bottle to create a physical barrier that prevents liquid from reaching the closure area. This preliminary protective structure ensures that even when the bottle is filled to maximum capacity, the liquid level is automatically constrained below the closure, eliminating leakage risk while maximizing liquid volume.
Data Source
Figure 1~1c
AI summary
A leak-proof and child-resistant sealed safety bottle (1) filled with a liquid substance. The liquid substance can be easily and safely dispensed from the safety bottle (1) using a suitable applicator (5) and applied precisely to a surface.