Applicator Cap With Alignment Head For Bristle Protection
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Solution Overview
Problem
Conventional caps for bristle applicators damage the bristles due to frequent contact and are not suitable for various neck shapes, lacking solutions for hygienic and metered dosing in pharmaceutical applications.
Innovation Solution
A cap with a head having a cylindrical or conical inner and outer shape, combined with a connection portion of round, oval, or square geometry, featuring an alignment and fitting portion to center and securely fit the applicator, preventing damage and ensuring precise sealing, suitable for single or multi-use applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional cap with a projection is used to seal the applicator outlet, then sealing is achieved, but the bristles are damaged due to frequent contact with the projection
Solution Approach 1:
The cap is divided into distinct functional zones: a head portion with internal alignment features for gentle bristle guidance, and a separate projection portion for sealing. This segmentation allows the sealing function to be isolated from the bristle contact area, preventing damage while maintaining effective sealing.
Solution Approach 2:
The alignment portion acts as an intermediary structure between the cap projection and the bristles. It provides a transition zone that guides the bristles away from direct contact with the projection, mediating the interaction to prevent harmful contact while allowing the projection to perform its sealing function.
2Ease of operation
If a tapered outer shape is used to center the cap, then centering is improved, but the solution is limited to tapered applicator necks only
Solution Approach 1:
Instead of modifying the cap's outer shape to match the applicator neck geometry, the invention inverts the approach by placing alignment features inside the cap's head portion. This internal alignment structure adapts to various neck shapes without requiring the cap outer shape to be tapered, enabling universality across different applicator geometries.
Solution Approach 2:
The head portion with its internal alignment features serves as a universal interface that can accommodate various applicator neck geometries (cylindrical, tapered, square, oval). This multi-functional design allows the same cap structure to center and protect bristles across different applicator types, enhancing adaptability.
3Reliability
If the cap projection contacts the bristles frequently during opening and closing, then sealing is maintained, but the bristles suffer damage over time
Solution Approach 1:
The cap structure separates the sealing function (projection) from the bristle interaction zone (head portion with alignment features). This segmentation allows the projection to maintain sealing through repeated operations while the alignment features protect the bristles from damage, extending applicator lifespan.
Solution Approach 2:
The alignment portion serves as a protective intermediary that prevents direct repeated contact between the projection and bristles. It absorbs the mechanical interaction during opening/closing operations, allowing the projection to perform sealing without transferring damaging forces to the bristles, thereby extending applicator life.
Data Source
AI summary
A cap for an applicator includes an inlet, a base having a connection portion embodied for connecting the cap to the applicator or a container formed therein, a head that receives an application part of the applicator within the head, and a projection formed at a top part of the cap. The top part formed at an opposite end to the inlet, and the projection cooperating with an outlet of the applicator. The head includes a cylindrical or conical inner or outer shape and the connection portion has a round inner or outer shape, that is an oval, round or square shape.