Cosmetic Applicator Venting Structure for Stable Liquid Flow
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Solution Overview
Problem
Conventional cosmetic applicators experience inconsistent liquid cosmetic flow due to air and liquid sharing the same passage, leading to interference and leakage when adjusting plates store excess liquid.
Innovation Solution
A cosmetic applicator design featuring a sleeve, seat, adjusting member, core, and bristle member with separate air and liquid passages, where air enters through a ventilation channel to balance pressure and ensure smooth flow, preventing interference and leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air and liquid cosmetic share the same passage (core 14), then pressure balance can be achieved, but flow consistency deteriorates due to interference between air and liquid
Solution Approach 1:
The patent divides the passage into two separate channels: an air passage (through axial hole 121) and a liquid passage (through core 14). This segmentation allows air and liquid cosmetic to flow independently without interfering with each other, while both still contribute to pressure balance within the adjusting member 12.
Solution Approach 2:
The adjusting plates 122 serve as an intermediary component that receives both air from the axial hole and liquid cosmetic from the core, allowing them to interact in a controlled manner for pressure equalization without direct mixing in a shared passage.
2Quantity of substance
If adjusting plates store a large amount of liquid cosmetic, then liquid cosmetic flow capacity increases, but leakage occurs through the passage
Solution Approach 1:
The patent segments the flow paths so that liquid cosmetic flows through the core 14 while air flows through the axial hole 121. This separation prevents liquid cosmetic from reaching the opening 151 through the air passage, eliminating the leakage problem while maintaining adequate storage capacity in the adjusting plates 122.
3Device complexity
If a single passage is used for both air and liquid cosmetic, then device complexity is reduced, but flow control precision deteriorates
Solution Approach 1:
The patent implements segmentation by creating distinct air and liquid passages within the adjusting member 12. The axial hole 121 provides an air passage while the core 14 provides a liquid passage, enabling precise control over each fluid's flow independently while maintaining a relatively simple overall structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The separate air and liquid passages ensure consistent and smooth application of liquid cosmetic, preventing interference and leakage, thereby improving the flow consistency and reducing unwanted discharge.
Implementation Method 1
The core 14 has a rear end extending rearward toward the cartridge 13 for absorbing the liquid cosmetic therein
Implementation Method 2
Air flows into the passage 152 via the opening 151, the core 14 and reaches the adjusting plates 122 of the adjusting member 12
Data Source
AI summary
A cosmetic applicator includes: a seat that has a ventilation channel extending through an outer surface; an adjusting member that is disposed in a sleeve and that has several adjusting plates, an axial hole, and a gap formed in the adjusting plates and communicating the hole with the ventilation channel; and a core that extends through the hole, absorbs liquid cosmetic from a cartridge and defines a communicating channel with the adjusting member. The ventilation channel, the gap and the communicating channel define an air passage. The cartridge, the core and a bristle member define a liquid passage. Air is introduced into the cartridge through the air passage after the liquid cosmetic flows out of the cartridge through the liquid passage.