Bidirectional Grinding Cosmetics Case with Spring-Supported Powder

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Solution Overview

Problem

Conventional cosmetics cases for grinding solid powder are inefficient due to high production costs, noise during use, inability to rotate in both directions, powder discharge issues, and staining from impurities, leading to unnecessary waste.

Innovation Solution

A cosmetics case design that allows rotation in both directions for grinding and pressing down the powder, featuring a spring-supported powder case with a rotatable grinding member and a mechanism to prevent powder discharge, ensuring the powder is evenly ground and contained.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the conventional cosmetics case uses a double structure lower body with multiple components, then the grinding function is achieved, but the production cost increases

Engineering Contradiction:

Improveproduction costVSAvoidnumber of components

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent combines the lower body and molded member into a single integrated structure, eliminating the need for separate components. The grinding member is directly formed on the base case rather than being a separate rotatable component, reducing the total number of parts from seven to five components while maintaining the grinding function.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The base case serves multiple functions: it provides the structural foundation, incorporates the grinding member directly on its surface, and eliminates the need for a separate molded member. This multi-functionality reduces component count and simplifies manufacturing processes.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If the conventional cosmetics case rotates the cutting member in one direction only, then the powder grinding is achieved, but the pressing function is lost

Engineering Contradiction:

Improverotation directionVSAvoidpowder pressing function

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The grinding member is designed to rotate freely in both clockwise and counter-clockwise directions. When rotated clockwise, it grinds the powder; when rotated counter-clockwise, it presses the ground powder onto the receiving surface. This dynamic bidirectional rotation capability provides both grinding and pressing functions using a single rotational mechanism.

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If the conventional cosmetics case maintains an open state, then the powder is accessible, but the powder is stained with impurities

Engineering Contradiction:

Improvepowder accessibilityVSAvoidimpurity contamination

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent employs a cover that seals the powder receiving space when not in use, protecting the ground powder from external impurities. The cover can be opened when powder is needed and closed when not needed, providing protection while maintaining accessibility. This flexible sealing approach prevents contamination without permanently restricting access.

Inventive Principle:

Principle #30Flexible shells and thin films

4Ease of operation

If the conventional cosmetics case is open at the upper end, then the powder can be accessed, but the ground powder is discharged outwards

Engineering Contradiction:

Improvepowder accessVSAvoidpowder discharge

Core Design Contradiction:

Ease of operationVSLoss of substance

Solution Approach 1:

The cover acts as a flexible sealing element that closes the upper opening of the powder receiving space when powder is not being accessed. This prevents ground powder from being discharged outward during carrying or storage, while allowing easy access when needed by simply opening the cover.

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 solution effectively addresses the inefficiencies of conventional designs by enabling efficient grinding and containment of powder, preventing discharge and staining, and reducing waste through a cost-effective and user-friendly design.

Implementation Method 1

a spring (50) elastically supporting the bottom of the powder case (60)

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

a grinding member (70) rotatably installed in a coupling groove (34) of the intermediate case (30) to grind a surface of the solid powder received in the powder case (60)

Methodology Applied

Scientific EffectAbrasion: Abrasion

Data Source

PatentUS7726322B2Cosmetics case

Publication Date: 2010.06.01 CHO KYU SUK

AI summary

The present invention relates to a cosmetics case including a cover having a lock protrusion and a hinge protrusion; a base case to which the cover is pivotally connected; an intermediate case installed in the base case and in which a button and a spring are installed; a powder case receiving solid powder therein, installed in the intermediate case and supported by the spring; and a grinding member rotatably installed in a coupling groove of the intermediate case to grind the surface of the solid powder received in the powder case. The present invention provides the cosmetics case capable of rotating in both directions, in which rotation in one direction permits grinding of the solid powder and rotation in the other direction permits pressing down of the surface of the solid powder, thereby preventing the ground powder from being discharged outwards, and after use, the cover is closed to prevent impurities from being put into the solid powder.