Refillable Cosmetic Applicator with Push Button Ejection
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Solution Overview
Problem
Existing refillable cosmetic applicators often require users to manually apply force to eject cartridges, which can be difficult and result in direct contact with the cosmetic product, leading to potential staining.
Innovation Solution
A refillable applicator design featuring a housing case and a push button that moves between a rest and ejection position, allowing for simple and contact-minimized cartridge ejection, with optional sealing means to maintain product integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a user manually applies axial force to eject the cartridge, then the cartridge can be replaced, but the user must directly handle the cartridge which may cause staining and the ejection may be difficult
Solution Approach 1:
The push button acts as an intermediary mechanism between the user and the cartridge. Instead of directly handling the cartridge, the user presses the push button which internally transmits the ejection force through a cam mechanism to release the cartridge latch, thereby minimizing direct contact with the cosmetic product while enabling easy cartridge replacement
2Reliability
If the applicator remains sealed to preserve the cosmetic product, then product integrity is maintained, but the ejection mechanism must be designed to maintain sealing during operation
Solution Approach 1:
The sealing function is extracted and concentrated at the push button interface with the case. The push button incorporates sealing elements that maintain the sealed state of the applicator body during normal operation, while allowing controlled opening only during the cartridge ejection process. This approach maintains product integrity without requiring complex sealing mechanisms throughout the entire device
Data Source
AI summary
A refillable applicator for a cosmetic product includes a cartridge that is movable between an initial position and an ejected position. The applicator includes a case housing the cartridge, and a push button designed to eject the cartridge, the push button being movable between an idle position wherein it is designed to enable the cartridge to be in the initial position in the case, and an ejection position wherein it is designed to eject the cartridge from the case.