Bottle Closure Cage with Annular Reliefs and Retaining Teeth
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Solution Overview
Problem
Existing closure systems for containers, particularly bottles, fail to provide a stable and reliable association between the cage and the collar, leading to instability and potential loss of the closure assembly during transportation and handling, resulting in economic losses and contamination risks.
Innovation Solution
A closure assembly featuring a cup-shaped cage with annular reliefs and retaining teeth, combined with a sealing nut and cap, ensures stable engagement with the bottle collar, preventing separation and ensuring secure sealing through a cantilevered retaining tooth and annular cavity configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the closure assembly is inserted into the bottle mouth without a stable engagement mechanism, then the assembly process is simple, but the closure assembly becomes unstable and may fall during transportation
Solution Approach 1:
The cage is nested within the closure assembly structure, with the bottle collar positioned between two annular reliefs of the cage. This nesting creates a stable engagement where the cage surrounds and secures the bottle collar, preventing the assembly from becoming detached during transportation while maintaining a relatively simple assembly process.
Solution Approach 2:
The invention introduces a vertical dimension of engagement by positioning the bottle collar between two annular reliefs (first and second reliefs) of the cage. This creates a multi-level engagement structure that secures the closure assembly to the bottle in the vertical direction, preventing detachment without significantly complicating the horizontal assembly process.
2Productivity
If the closure assembly uses a simple insertion method, then the assembly is quick to implement, but the closure assembly may become incorrect positioned or broken
Solution Approach 1:
The cage is designed with pre-formed annular reliefs and a retaining ring structure that automatically guides and positions the bottle collar during insertion. This preliminary structural preparation ensures that the closure assembly becomes correctly positioned on the bottle during the insertion process itself, without requiring additional positioning steps or complex alignment procedures.
Solution Approach 2:
The retaining ring with its specific geometric configuration (annular reliefs, bridge pieces, slits) automatically performs the positioning and securing function during the insertion process. The structure self-adjusts to engage with the bottle collar, providing self-positioning and self-securing capabilities that ensure manufacturing precision without requiring external positioning mechanisms or complex assembly procedures.
3Device complexity
If the closure assembly lacks a retaining mechanism, then the structure is simple, but the components may separate during handling
Solution Approach 1:
The retaining mechanism is segmented into discrete functional elements: the cage with annular reliefs, the bridge pieces connecting cage sections, and the retaining ring. These segmented components work together to provide reliable retention, while each individual element remains relatively simple in structure. The segmentation allows for manufacturing simplicity while achieving reliable component retention through the coordinated action of multiple simple elements.
Solution Approach 2:
The retaining ring and cage structure incorporate flexible elements that can deform during assembly and handling, then return to their original shape to maintain retention. This flexibility allows the retaining mechanism to accommodate slight variations in bottle dimensions and handling forces while maintaining reliable component retention, without requiring complex rigid structures.
Data Source
AI summary
A closure assembly for a bottle including a cage, a closure cap, and a sealing nut. The cage includes a side wall with an inner surface including a first annular relief and a second annular relief spaced so as to form a seat for a collar of the bottle. The closure cap includes a head and a shank. The sealing nut includes a side wall. The inner surface of the side wall of the cage includes one or more retaining teeth for retaining the head of the closure cap. The retaining teeth are cantilevered and inclined with respect to the inner surface of the side wall of the cage. Opposite the retaining teeth a recess is provided within which the teeth can be retracted, so that the head of the sealing cap can be pushed towards the base of the cage.