Elastic Piston Scraping Mechanism for Cosmetic Liquid Retrieval
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Solution Overview
Problem
Cosmetic containers with built-in scraping devices fail to accurately soak and retrieve liquid material when the level is below half capacity, leading to waste and inconvenience due to fluid flow and residual material adherence.
Innovation Solution
A soft elastic piston piece is integrated into the container, allowing a cosmetic tool to press and scrape the inner surface, centralizing the liquid and maintaining a full-like state, ensuring accurate soaking and cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If liquid material is stored in a long tube-type container, then the container can hold cosmetic liquid material, but the liquid material flows and the liquid level changes when the container is held at an inclined angle, making it impossible to soak liquid material accurately
Solution Approach 1:
The piston piece is designed to move dynamically with the liquid level, maintaining constant contact through elastic deformation. This dynamic adaptation ensures the scraping surface always aligns with the liquid level regardless of container orientation, solving the liquid level stability problem during inclined holding.
Solution Approach 2:
The elastic modulus and dimensional parameters of the piston piece are specifically designed to match the container's internal diameter and liquid viscosity characteristics. By optimizing these parameters, the piston maintains effective contact pressure on the liquid surface and inner wall under various gravitational conditions, ensuring accurate material soaking.
2Ease of operation
If the brush head is positioned at the center of the bottle, then the structure is simple, but liquid material cannot be soaked accurately when the liquid level is low because the liquid flows to the lower edge
Solution Approach 1:
The piston piece extends the soaking interface from a single point (brush head) to a two-dimensional surface that contacts both the liquid surface and the inner wall. This dimensional expansion ensures material is available at multiple locations simultaneously, allowing accurate soaking regardless of brush insertion position or liquid level height.
Solution Approach 2:
The piston piece acts as an intermediary between the brush and the liquid material, particularly when liquid level is low. It bridges the gap by providing a continuous scraping surface that extends to the inner wall, ensuring the brush can always access sufficient material even when the liquid has flowed to the lower edge.
3Quantity of substance
If liquid material is stored in the container, then the container can be used for makeup, but much residual liquid material adheres to the internal surface after use, causing waste and recycling inconvenience
Solution Approach 1:
The piston piece performs preliminary scraping action during the normal soaking process, continuously collecting residual liquid material from the inner wall as the brush is inserted and withdrawn. This preliminary collection prevents material from adhering and remaining on the inner surface, eliminating waste and facilitating easy recycling.
Solution Approach 2:
The elastic piston maintains continuous contact with the inner wall throughout the brush insertion and withdrawal cycle, providing ongoing scraping action. This continuous useful action ensures residual material is consistently collected and centralized, preventing adherence and maximizing material utilization throughout the entire usage period.
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 solution enables precise material retrieval, reduces waste, and facilitates easy recycling by maintaining the liquid level and preventing residual material adherence, enhancing the convenience and environmental sustainability of cosmetic use.
Implementation Method 1
configuring a soft elastic piston piece directly in a long-tube type container, inserting a cosmetic tool in the container to press the piston piece downward to scrape the material attached to the inner surface of the container
Implementation Method 2
press the piston piece downward to scrape the material attached to the inner surface of the container
Data Source
AI summary
A built-in material scraping device for a cosmetic container is a material scraping device capable of being slipped downward with a liquid surface of liquid material stored inside the cosmetic container. An elastic piston piece is mainly into the container before a scraping element is installed on the mouth of the container, where a through hole is configured on the center of the piston piece, having a diameter equal to the diameter of a brushing rod, which is passed through the through hole to press the piston piece downward to move the stored liquid material to flow downward, thereby being convenient for the soaking of the brush head upon make-up use.