Facial Care Brush With Pivotable Carriers

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Solution Overview

Problem

Existing facial care brushes often irritate sensitive skin due to a fixed cleaning surface that does not adapt well to facial contours, leading to potential redness during cleaning.

Innovation Solution

A brush design featuring multiple pivotable carriers with cleaning elements, each connected to a common drive shaft via a planetary gear system, allowing for adjustable rotational motion and better adaptation to facial contours, reducing skin irritation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed cleaning surface is used, then the brush structure is simple, but the brush cannot adapt to facial contours causing skin irritation

Engineering Contradiction:

Improveadaptation to facial contoursVSAvoidbrush structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The cleaning head is divided into multiple independent carriers (typically 3-6 carriers) that can pivot independently relative to the common drive shaft. Each carrier holds cleaning elements and can adapt its orientation separately, allowing the overall brush to conform to curved facial surfaces while maintaining structural manageability through modular segmentation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The carriers are designed with pivotable mounting on the common drive shaft, enabling dynamic adjustment of each carrier's orientation during operation. This dynamic capability allows the cleaning elements to automatically adapt to the contours of the face, transforming a static structure into a dynamically adaptable system that responds to surface geometry.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If multiple pivotable carriers are used, then the adaptability to facial contours is improved, but the device complexity increases

Engineering Contradiction:

Improveadaptation to facial contoursVSAvoidnumber of carriers and shafts

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Multiple individual drive shafts are merged into a single common drive shaft that serves all carriers. This consolidation reduces the total number of moving parts and simplifies the drive mechanism, while the pivotable connection allows each carrier to maintain independent adaptability. The common shaft acts as a central hub that distributes rotational motion to all carriers simultaneously.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The common drive shaft performs multiple functions: it provides rotational drive to all carriers, serves as a structural support element, and enables synchronized operation of multiple carriers. This multi-functionality reduces the need for separate drive mechanisms for each carrier, thereby reducing overall device complexity while maintaining adaptability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Device complexity

If a common drive shaft is used for all carriers, then the device complexity is reduced, but the manufacturing precision requirements increase

Engineering Contradiction:

Improvedrive shaft configurationVSAvoidpivotable mounting precision

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The pivotable mounting mechanism incorporates inherent compliance and tolerance compensation that cushions against the effects of manufacturing variations. The pivot joints are designed with appropriate clearances and elastic elements that absorb dimensional tolerances, reducing the stringency of manufacturing precision requirements while maintaining functional performance.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS10849421B2Brush

Publication Date: 2020.12.01 M C SCHIFFER GMBH

AI summary

The present invention relates to an improved brush, in particular a brush for facial care, with several carriers including cleaning elements and each connected to a shaft, and a casing that pivotably mounts said carriers and that supports a common drive shaft for said carriers and which is drive-coupled to said shafts.