Refillable Stick Container Screw-Coupled Refill for Skin Adhesion
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Solution Overview
Problem
Existing refillable stick-type cosmetic containers are cumbersome to refill, leading to decreased adhesion and potential skin damage due to excessive force application during use.
Innovation Solution
A refillable stick-type content container design featuring a base kit and refill kit with a screw column and holder assembly that allows easy separation and combination, enhanced by a tensioner providing elasticity for improved adhesion and absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If existing refillable products are used, then resource waste is reduced by reusing cosmetic containers, but manipulation convenience deteriorates due to cumbersome refilling operations
Solution Approach 1:
The cosmetic container is divided into two separable parts: a reusable base kit containing the applicator and a replaceable refill kit containing the cosmetic content. This segmentation allows users to refill by simply replacing the content cartridge without manipulating the entire container, improving ease of operation while maintaining resource reuse
Solution Approach 2:
The cosmetic content is extracted into a separate refillable cartridge that can be independently replaced. The base kit remains stationary while only the refill kit needs to be manipulated for refilling, significantly reducing manipulation complexity while enabling continuous resource reuse
2Reliability
If existing refillable products are used, then adhesion to skin may be improved, but skin damage occurs due to excessive force application
Solution Approach 1:
The holder assembly incorporates an elastic element that provides dynamic, adaptive pressure regulation. The elastic component allows the content to be applied with controlled, gradual force that adapts to skin conditions, ensuring adequate adhesion without exceeding safe pressure thresholds that would cause skin damage
3Ease of operation
If easy refilling is implemented, then manipulation convenience is improved, but adhesion and absorption decrease due to poor content distribution
Solution Approach 1:
The content cartridge incorporates a structured holder assembly with specific geometric features including ridges and grooves that create localized zones for optimal content distribution. This local structural quality ensures uniform content application and proper distribution characteristics while maintaining the simplicity of the refill mechanism
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
Facilitates easy refilling and enhances user comfort during content application, increasing skin adhesion and absorption while preventing skin damage.
Implementation Method 1
the screw column includes a column body having a male screw portion formed on the outer surface thereof... when the refill kit and the base kit are combined with each other, the male screw portion of the screw column and the screw engagement protrusion of the cylinder are screw-coupled
Implementation Method 2
the holder assembly includes: a tensioner applying elasticity in the vertical direction... when the refill kit and the base kit are combined, the tensioner elastically biases at least a portion between the screw column and the holding block
Data Source
AI summary
A content container includes: a base kit; and a refill kit which is separable from and combinable with the base kit and is filled with the content, wherein the base kit includes: a bottom housing having an inner space; and a screw column arranged within the bottom housing, the refill kit includes: a cylinder which is hollow and has a screw engagement protrusion formed on the inner bottom; and a holder assembly positioned within the cylinder to secure the content, the screw column includes a column body having a male screw portion formed on the outer surface thereof and a nose provided at the top of the column body, when the refill kit and the base kit are combined with each other, the male screw portion of the screw column and the screw engagement protrusion of the cylinder are screw-coupled.