Push-Type Cosmetic Container Spring-Actuated Valve Design

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Solution Overview

Problem

Cosmetic containers with airless pump structures have complex assemblies, leading to inefficiencies in manufacturing, high costs, and leakage issues due to incomplete filling and structural weaknesses, particularly when assembling parts for makeup discharge and filling.

Innovation Solution

A push-type cosmetic container design that uses a spring to elastically press a pressing plate, simplifying the assembly by combining a valve unit, shoulder, and piston over an inner container, with a hermetic structure to prevent makeup leakage and improve filling efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If an airless pump structure is used to discharge makeup, then the makeup can be discharged sequentially, but the structure becomes complicated with multiple parts including piston, airless pump, lever operation unit, and makeup dish

Engineering Contradiction:

Improvemakeup discharge functionVSAvoidstructure complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent extracts and removes the complex airless pump mechanism (piston, lever operation unit, makeup dish) from the cosmetic container, replacing it with a simple pressing plate structure that directly presses the makeup material to achieve discharge without the need for complex mechanical components

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of using a pump mechanism to actively push makeup out through a complex pathway, the invention inverts the approach by using a simple pressing action on the makeup material itself, allowing the makeup to be discharged directly through the container opening without requiring a separate discharge path and associated components

Inventive Principle:

Principle #13The other way round (Inversion)

2Ease of manufacture

If multiple parts are assembled after filling the inner container with makeup, then assembly can be done in backfilling type, but insufficient filling of about 30% is caused by structural problem

Engineering Contradiction:

Improveassembly convenienceVSAvoidmakeup filling amount

Core Design Contradiction:

Ease of manufactureVSQuantity of substance

Solution Approach 1:

The pressing plate structure is designed to be pre-assembled with the container body before filling, creating a unified structure that allows complete filling of the inner container without the 30% insufficiency problem. The pressing plate is positioned to engage with the makeup material immediately upon filling, ensuring full utilization of the container volume

Inventive Principle:

Principle #10Preliminary action

3Ease of operation

If a complex assembly process is used with multiple parts, then makeup discharge function can be achieved, but manufacturing efficiency is low and manufacturing cost is high

Engineering Contradiction:

Improvemakeup discharge functionVSAvoidmanufacturing efficiency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The invention merges the pressing plate, container body, and makeup discharge components into a single integrated structure, eliminating the need to assemble multiple separate parts (piston, airless pump, lever operation unit, makeup dish). This merging of components significantly reduces assembly steps, improves manufacturing efficiency, and lowers production costs while maintaining the makeup discharge function

Inventive Principle:

Principle #5Merging (Combining)

4Device complexity

If hermetic structure is not secured in the discharge path, then assembly is simpler, but makeup may leak when carried or remain in the discharge path causing contamination

Engineering Contradiction:

Improvestructure simplicityVSAvoidleak prevention and contamination control

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The pressing plate is designed with elastic properties, functioning as a flexible component that can deform to create hermetic sealing against the container walls and discharge path surfaces. This elastic sealing mechanism prevents makeup leakage during transport and ensures complete discharge without residual makeup remaining in the path, thereby preventing contamination while maintaining structural simplicity

Inventive Principle:

Principle #30Flexible shells and thin films

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 enhances productivity, reduces manufacturing costs, and ensures convenient use by preventing makeup leakage and contamination through a simplified assembly process and improved sealing, allowing for efficient makeup discharge without the need for an airless pump.

Implementation Method 1

a spring elastically supporting the bottom of the pressing plate

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentEP3419473B1Push type cosmetic container

Publication Date: 2019.10.09 CTK CO LTD

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AI summary

The present invention provides a push type cosmetic container that includes: an inner container (30) having a vertical tube (32) formed at the center of a storage space (31) for keeping makeup to feed the makeup vertically upward; a shoulder (40) fixed on the top of the inner container; a piston (50) inserted in the storage space (31) to be movable downward; and a valve unit (60) for discharging the makeup by opening a valve body (61) coupled to the top of the vertical tube (32) in the inner container when the piston (50) is pressed by pressing a pressing plate (63) elastically supported over the inner container (30) by a spring (65).