Cosmetic Dropper Piston Contamination Prevention

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Solution Overview

Problem

Conventional cosmetic droppers using syringe structures are inefficient due to leftover product and expose the piston area, making them inconvenient and unsanitary as foreign substances can contaminate the extraction process.

Innovation Solution

A cosmetic dropper design featuring a container with a cap, pipette coupling part, pipette member, piston coupling bar, and a separation prevention part that covers the outer wall of the piston coupling bar to prevent separation and contamination, allowing for convenient and sanitary use by using a piston method for extracting and dispensing cosmetic liquids.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional syringe structure is used for extracting cosmetic contents, then the extraction function is achieved, but the piston area is exposed to the outside making it unsanitary and inconvenient

Engineering Contradiction:

Improveconvenience of useVSAvoidcontamination of piston area

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The separation prevention part is nested within the cap part structure, where the separation prevention body is inserted into the cap part and the piston coupling bar passes through it. This nested arrangement allows the separation prevention part to cover and protect the piston coupling bar without requiring a separate external component, thus preventing foreign substance contamination while maintaining ease of operation.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Measurement precision

If individual packaging method is used for cosmetic contents, then precise quantity for each use is achieved, but a relatively large amount of product remains in the capsule making it inefficient

Engineering Contradiction:

Improveprecise quantity controlVSAvoidleftover product in capsule

Core Design Contradiction:

Measurement precisionVSLoss of substance

Solution Approach 1:

The dropper enables continuous extraction of cosmetic contents from the container body through the pipette member by moving the piston part. This continuous action allows the user to extract all or most of the cosmetic contents from the container, eliminating the waste associated with individual capsule packaging while maintaining precise quantity control through the piston mechanism.

Inventive Principle:

Principle #20Continuity of useful action

3Ease of operation

If the piston coupling bar is exposed to the outside of the pipette member, then the piston mechanism can be operated, but the end of the piston coupling bar can be separated to the outside causing contamination

Engineering Contradiction:

Improvepiston operationVSAvoidseparation prevention

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The piston coupling bar is nested within the separation prevention body, which is itself nested within the cap part. This nested structure allows the piston coupling bar to be operated (pushed and pulled) while its end remains covered and protected by the separation prevention body, preventing separation to the outside and ensuring reliability without compromising operability.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The separation prevention body acts as an intermediary component between the piston coupling bar and the external environment. It provides a protective interface that allows the piston mechanism to function while preventing direct exposure and potential separation of the piston coupling bar end to the outside, thus maintaining both operability and reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 prevents the piston area from being exposed, reducing contamination and improving usability by ensuring that foreign substances do not stain the piston part, making the dropper more efficient and sanitary for cosmetic liquid use.

Implementation Method 1

a piston part which is coupled to an end of the piston coupling bar to elevate together with the piston coupling bar and allows the cosmetic liquid stored in the container body to be suctioned into the pipette member or discharged to the outside reversely

Methodology Applied

Scientific EffectPiston mechanism: Pump

Implementation Method 2

a separation prevention part coupled to the piston coupling bar so as to cover an outer wall of the piston coupling bar to prevent the end of the piston coupling bar from being separated to the outside of the pipette member

Methodology Applied

Scientific EffectPhysical barrier: Physical Containment

Data Source

PatentUS11317695B2Cosmetic dropper

Publication Date: 2022.05.03 FS KOREA INDUSTRIES INC

AI summary

Disclosed is a cosmetic dropper which includes a container main body having a container body in which a cosmetic liquid is stored and a cap part detachably coupled to the container body; a pipette coupling part coupled to the cap part; a pipette part having a pipette member coupled to the pipette coupling part, a piston coupling bar provided to elevate inside the pipette member, and a piston part coupled to an end of the piston coupling part to elevate together with the piston coupling bar and allows the cosmetic liquid to be suctioned into the pipette member or discharged to the outside reversely; and a separation prevention part coupled to the piston coupling bar so as to cover an outer wall of the piston coupling bar to prevent the end of the piston coupling bar from being separated to the outside of the pipette member.