Elastic Bellows Pumping Member for Cosmetics Case

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Solution Overview

Problem

Existing cosmetic cases with pumping mechanisms are complex, costly, and prone to malfunction due to metal spring corrosion, and they often leak during decompression vacuum tests, with uneven discharge of cosmetics when the button is pressed.

Innovation Solution

A simplified cosmetic case design using an elastic pumping member with a bellows shape, integrated valve, and a nozzle system that includes an undercut part and decompression support to prevent leakage and ensure smooth, controlled discharge of cosmetics through compression and expansion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a metal spring is used as the pumping member, then the pumping action is reliable, but the content deteriorates due to corrosion of the spring

Engineering Contradiction:

Improvepumping action reliabilityVSAvoidcorrosion of spring

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the durable metal spring with an elastic material that can be easily replaced. The elastic pumping member is designed to be disposable or easily replaceable, eliminating the corrosion issue while maintaining the pumping function. This aligns with the principle of using inexpensive, replaceable components rather than durable but corrosive metal parts.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent changes the material parameter of the pumping member from metal to elastic material. This parameter change eliminates the corrosion problem while maintaining the elastic deformation needed for pumping action. The elastic material undergoes reversible deformation to create the pumping effect without the harmful corrosion that affects metal springs.

Inventive Principle:

Principle #35Parameter changes

2Object-affected harmful factors

If a bellows tube made of rubber material is used instead of metal spring, then corrosion is prevented, but the elastic discharge part spreads at low pressure during decompression vacuum test causing leakage

Engineering Contradiction:

Improvecorrosion preventionVSAvoidsealing performance during vacuum test

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent applies different material properties to different parts of the pumping member. The bellows tube is made of elastic material for pumping action, while the discharge hole area has enhanced sealing structures. This local differentiation allows the elastic material to provide pumping function while the reinforced sealing areas prevent leakage during vacuum tests.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent incorporates sealing structures and reinforcement features in advance within the pumping member design. These pre-built sealing elements prevent leakage before the vacuum test occurs, cushioning against the potential harmful effect of leakage during the testing process.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Speed

If the elastic discharge hole is suddenly spread under internal pressure when the button is pushed, then the pumping action is rapid, but the content is not smoothly discharged by a fixed quantity

Engineering Contradiction:

Improvedischarge speedVSAvoiddischarge quantity control

Core Design Contradiction:

SpeedVSManufacturing precision

Solution Approach 1:

The patent performs preliminary opening of the discharge hole before the main pumping action. The discharge hole is gradually opened through controlled elastic deformation, allowing the content to be smoothly discharged by a fixed quantity. This preliminary action prevents sudden discharge and ensures precise control over the amount of content dispensed.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses dynamic, controlled elastic deformation of the discharge hole. The hole opens gradually through the elastic recovery process rather than suddenly, allowing smooth discharge. The dynamic nature of elastic deformation provides inherent control over the discharge rate and quantity, ensuring consistent and precise dispensing.

Inventive Principle:

Principle #15Dynamics

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 design reduces the number of components, lowers manufacturing costs, prevents corrosion, ensures reliable discharge, and prevents leakage during vacuum tests, allowing for consistent and efficient dispensing of cosmetics.

Implementation Method 1

a pumping member made of an elastic material so that the content is discharged through the pumping action such as compression and expansion due to the elasticity

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS10602828B2Case for liquid state cosmetics

Publication Date: 2020.03.31 BYUN YOUNG KWANG

AI summary

Provided is a case for liquid state cosmetics. The case for liquid state cosmetics includes a case body in which a liquid content is contained, a shoulder unit coupled to an upper portion of the case body and having a content discharge hole at a central portion thereof, a pumping unit inserted into the shoulder part and connected to the content discharge hole to discharge the content through pumping action due to elasticity, and a button unit coupled to an upper portion of the shoulder unit and connected to the pumping unit to operate the pumping unit so that the content is discharged by pumping action of the pumping unit.