Double Hinge Cosmetic Assembly for Angle Adjustment

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Solution Overview

Problem

Users face inconvenience when carrying separate cosmetic products like eyeliner and lipstick, and there is a need for a solution that connects and adjusts the angle between cosmetic products for enhanced convenience.

Innovation Solution

A double hinged cosmetic assembly with a hinge unit and leg units that allow rotation and adjustment of angles between cosmetic modules, including a hinge module and rod, accommodating various cosmetic products.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple cosmetic products are connected together, then user convenience and utility are improved, but the device complexity increases

Engineering Contradiction:
ImproveutilityVSAvoidcomplexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The cosmetic assembly is divided into separate cosmetic products (first cosmetic product, second cosmetic product) that can be individually manufactured and then connected through the hinge unit. This segmentation allows each product to maintain its simple structure while the overall assembly provides multiple functions.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The hinge unit serves multiple functions: it connects different cosmetic products, allows angle adjustment between products, and enables compact folding for storage. This multi-functional component increases utility without proportionally increasing complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of manufacture

If cosmetic products are connected with fixed structure, then manufacturing simplicity is improved, but ease of operation deteriorates due to inability to adjust angles

Engineering Contradiction:
ImprovesimplicityVSAvoidconvenience
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The hinge unit introduces dynamic movement capability between cosmetic products, allowing the angle between products to be adjusted during use. This dynamic feature enhances ease of operation while maintaining relatively simple manufacturing through standardized hinge mechanisms.

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 assembly allows for easy use and storage of multiple cosmetic products by enabling angle adjustment and compact folding, enhancing user convenience and utility.

Implementation Method 1

a hinge unit extending from a first lateral surface to a second lateral surface; and a leg unit being hinge-coupled to the hinge unit

Methodology Applied
Scientific EffectHinge mechanism: Hinge

Data Source

PatentEP4000450B1Double hinge cosmetic assembly
Publication Date: 2025.04.02 CTK CO LTD
  • EP4000450B1 patent drawingFigure 1(a)~1(b)
  • EP4000450B1 patent drawingFigure 2
  • EP4000450B1 patent drawingFigure 3

AI summary

An embodiment of the present invention may provide a cosmetic assembly comprising: a hinge unit having a shape extending from a first side to a second side; and a leg unit hinge-coupled to the hinge unit and having a shape extending from one end connected to the hinge unit to the other end receiving a cosmetic product. The leg unit comprises: a first side leg unit hinge-coupled to the first side of the hinge unit; and a second side leg unit hinge-coupled to the second side of the hinge unit, wherein the angle formed between the first side leg unit and the second side leg unit depends on a rotation of the first side leg unit and the second side leg unit around the hinge unit.