Closure Cap Wings with Symmetrical Fastening Regions
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Solution Overview
Problem
Existing closure caps with radial wings often require high rotational force for opening, leading to potential bending or breaking, especially when dealing with stiff threads or tamper-evident seals, compromising grip and strength.
Innovation Solution
A closure cap design featuring rotationally symmetrical wing fastening regions transitioning from a concave to a convex shape, with optional struts or tongues for increased strength and a pleasant grip, while maintaining a simple construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If high rotational force is applied to open the closure cap, then the cap can overcome stiff threads or tamper-evident seals, but the grip surfaces (wings) may bend or break
Solution Approach 1:
The wing is divided into two distinct functional regions: a wing fastening region that integrates with the cap body and an actuation region that extends outward for manual gripping. This segmentation allows the fastening region to provide structural support and force distribution, while the actuation region serves as the leverage point, preventing wing breakage during high-force operations
Solution Approach 2:
The wing fastening regions are positioned rotationally symmetrical with respect to the cap axis of rotation, creating a three-dimensional force distribution pattern. This spatial arrangement allows forces to be distributed across multiple attachment points, enhancing overall wing strength while maintaining the ability to apply high rotational force
2Ease of operation
If the wings are made larger to improve grip, then manual actuation becomes easier, but the cap construction becomes more complex
Solution Approach 1:
The wing is designed as an integral part of the cap body, with the actuation region and fastening region formed as a single continuous structure. This merging eliminates the need for separate components or complex assembly steps, maintaining simple construction while providing an optimized grip surface that extends radially outward for comfortable manual actuation
Data Source
AI summary
A closure cap made of a plastic. The closure cap includes a cylindrical shell which has a lateral outer surface and a vertical axis of rotation, and wings which are arranged to protrude from the lateral outer surface and which are fastened on diametrically opposite sides of the cylindrical shell. Each of the wings transitions from a wing fastening region, which is arranged close to the cylindrical shell, into an actuation region, which adjoins the wing fastening region and which is arranged radially further distant from the cylindrical shell. The actuation region serves for a manual actuation of the closure cap. The wing fastening regions are arranged, with respect to both sides of a central plane which runs through the cap axis of rotation, rotationally symmetrical with respect to the cap axis of rotation.