Closure Cap Web Section Projection for Jam-Free Holding
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Solution Overview
Problem
Existing closure caps with security rings are weakened by projections that hold the threaded part in place, leading to potential damage and unintended release, and user-unfriendliness due to protrusions that can break or jam.
Innovation Solution
A closure cap design featuring a second projection on the web section that contacts the open rim of the threaded part, eliminating the need for a weakening projection on the security ring, providing stability and preventing catching or jamming, with retaining strips that unfold maximally and snap into the container neck for secure positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a projecting piece is formed on the threaded part to hold it in the unfolded position, then the threaded part can be held in the open position, but the security ring is weakened and can be damaged or release undesiredly
Solution Approach 1:
Instead of forming a projection on the threaded part that contacts the security ring (prior art), the invention inverts the arrangement by forming a projection on the security ring that contacts the threaded part. This inversion transfers the structural burden from the security ring to the threaded part, allowing the security ring to maintain its strength while still achieving the holding function.
Solution Approach 2:
The invention extracts the holding projection from the security ring structure and relocates it to the threaded part. By removing the projection from the security ring, the security ring's structural integrity is preserved, while the holding function is maintained through the corresponding projection on the threaded part that engages with the security ring's surface.
2Reliability
If a projecting piece is formed on the threaded part, then the threaded part can be held in the open position, but the projection can break off or jam during use reducing user-friendliness
Solution Approach 1:
The invention inverts the projection arrangement by placing the projection on the security ring rather than the threaded part. This inversion eliminates protrusions on the threaded part that could catch or jam during use, while the holding function is maintained through the engagement between the security ring's projection and the threaded part's surface.
3Ease of manufacture
If the web section height is reduced to accommodate a projection, then the closure cap can be pressed onto the container neck easier, but the closure cap lacks sufficient stability
Solution Approach 1:
The invention inverts the projection location to the security ring, which allows the web section to maintain its full height for stability. The projection on the security ring engages with the threaded part without requiring reduction of the web section height, thus preserving both stability and ease of pressing.
Data Source
AI summary
A closure cap for closing a pouring opening of a container has a cylindrical threaded part with an open rim, an inner thread configured to cooperate with an outer thread of a container neck, a security ring configured to be held on a projection formed on the container neck, a plurality of security webs configured to releasably connect the security ring to the open rim, and a first retaining strip having a first end securely connected to the open rim of the threaded part and a second end securely connected to the security ring. The closure cap has a second retaining strip having a third end securely connected to the open rim of the threaded part and a fourth end securely connected to the security ring. A circular web section is formed between the first and the second ends. A second projection is formed on an outer wall of the web section.