Hermetic Container Safety Plug with Radial Bridge Locking
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Solution Overview
Problem
Existing hermetic containers with simple closing assemblies lack effective mechanisms to prevent unauthorized or accidental opening, particularly important for hazardous substances like paint or varnish to ensure safety and prevent child access.
Innovation Solution
A container design featuring a capsule-shaped plug and adapter with a safety device comprising U-shaped cavities and radial bridges, which requires a specific mechanism to unscrew, preventing accidental opening by ensuring the plug remains securely locked until intentionally released.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a simple closing assembly with a capsule-shaped plug is used, then the container is easy to assemble and inexpensive to produce, but the container cannot prevent unauthorized or accidental opening
Solution Approach 1:
The closing assembly is segmented into distinct functional components: a capsule-shaped plug for sealing, an adapter with U-shaped cavities for engagement, and radial bridges for locking. This segmentation allows each component to perform its specific function while maintaining overall simplicity and ease of assembly.
Solution Approach 2:
The safety device is pre-configured with U-shaped cavities and radial bridges that automatically engage when the plug is inserted and tightened. The radial bridges are positioned to lock into the U-shaped cavities before use, creating an automatic safety mechanism that prevents unauthorized opening without requiring additional user actions.
2Reliability
If a safety device with U-shaped cavities and radial bridges is added to the plug, then unauthorized opening is prevented, but the device complexity increases
Solution Approach 1:
The safety device features are merged directly into the capsule-shaped plug and adapter structure. The U-shaped cavities are formed as integral parts of the adapter, and the radial bridges are molded as part of the plug assembly. This merging eliminates the need for separate safety components, reducing part count and simplifying manufacturing while maintaining hermetic seal reliability.
3Ease of operation
If the plug is designed to be easily removable, then the container is easy to open, but the container can be opened accidentally by children or unauthorized persons
Solution Approach 1:
The radial bridges are designed to protrude and engage with the U-shaped cavities in the adapter, creating a preliminary mechanical lock that prevents the plug from being removed. This anti-action mechanism must be deliberately overcome by applying sufficient torque to deform the radial bridges, ensuring that accidental removal by children or unauthorized persons is prevented while still allowing intentional opening by adults.
Data Source
Figure 1
Figure 2
Figure 3~6
AI summary
Container (1) with hermetic seal provided with a lid (3); an opening (4) obtained in the lid (3) and provided with an axis (5); an annular internal wall (13) surrounding the opening (4) and an annular external wall (12), said annular walls (12, 13) being coaxial with respect to the axis (5), extending upwards from the lid (3) and defining an annular cavity (11); a closing assembly (8) of the opening (4) provided with a plug (10), which has an annular peripheral cavity (25) suitable to internally house the annular external wall (12) with which it cooperates to enable the container (1) to be opened and closed, a number of radial bridges (22) that connect the annular internal wall (13) to the annular external wall (12) and a safety device (31) that cooperates with the radial bridges (22) to keep the container (1; 1') in a closed position.