Rotating Disc Cosmetic Applicator for Continuous Line Drawing
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Solution Overview
Problem
Existing cosmetic applicators with sharp tips often cause the tip to get stuck in the eyelid, leading to discomfort and discontinuous lines when drawing eye lines.
Innovation Solution
A cosmetic container with a disc-shaped application body that rotates at the outlet, preventing tip sticking and ensuring a smooth, continuous line by using an intermediate core to supply liquid cosmetic, and optionally featuring a groove for liquid accumulation and a second intermediate core for reliable transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a sharp tip is used for drawing eye lines, then a thin line can be drawn, but the tip may get stuck in the eyelid causing discomfort and discontinuous lines
Solution Approach 1:
The application body is designed to rotate during application instead of being fixed. This dynamic rotation prevents the tip from getting stuck in the eyelid while maintaining the ability to draw thin lines, resolving the contradiction between line precision and application comfort
Solution Approach 2:
The application body uses a curved or rounded tip design instead of a sharp angular tip. This curvature allows the applicator to glide smoothly over the skin surface without penetrating or getting stuck, while still enabling precise thin line application through controlled rotation
2Manufacturing precision
If a sharp tip is used for drawing eye lines, then a thin line can be drawn, but the skin may be pulled resulting in unsatisfactory user experience
Solution Approach 1:
The rotatable application body dynamically adapts to the skin surface during application, preventing the tip from catching or pulling the skin. This maintains continuous line drawing while eliminating skin pulling effects
Solution Approach 2:
The curved tip design distributes contact pressure more evenly across the skin surface, preventing concentrated force that causes skin pulling. This enables continuous line application without harmful skin effects
Data Source
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AI summary
A cosmetic container with application body, a liquid cosmetic accommodated in the container being supplied to an application body provided to a tip of the container through an intermediate core, the liquid cosmetic being applied by the application body, in which the application body is disc-shaped, rotatably provided at an outlet of the liquid cosmetic at the tip of the container, and in contact with the intermediate core.