Dual-Motor Brush Motion Control for Skin-Specific Cleansing

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Solution Overview

Problem

Current facial and cleaning brushes either rely solely on rotation or sonic vibration, limiting their effectiveness in cleaning and skin care, as they fail to combine these motions optimally to address different skin types and cleansing needs.

Innovation Solution

A dual motor device that combines micro-rotation with sonic vibration, allowing adjustable ratios and speeds between 0 and 100%, utilizing a planetary gear system, along with sensors and RFID communication for optimal brush head and cleanser interaction, and a mobile interface for user customization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a brush uses only rotation or only sonic vibration, then the device is simple, but the cleaning effectiveness and adaptability to different skin types are limited

Engineering Contradiction:
Improveadaptability to different skin types and cleansing needsVSAvoiddual motor system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines two different motor systems (rotational motor and sonic vibration motor) into a single brush device, allowing the bristles to perform both rotational and sonic vibration movements simultaneously or independently. This merging of functions enables the device to adapt to different skin types and cleansing needs while managing complexity through integrated design

Inventive Principle:
Principle #5Merging (Combining)

2Adaptability or versatility

If the brush provides fixed motion patterns, then the device is simple to operate, but it cannot be customized for specific skin types and cleansing tasks

Engineering Contradiction:
Improvecustomizability for specific skin typesVSAvoiduser interface complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent implements adjustable motion patterns that can dynamically change based on user selection. The brush can switch between different rotational speeds, sonic vibration intensities, and motion combinations (e.g., micro-rotation with sonic vibration) to accommodate specific skin types and cleansing tasks, making the device adaptable while maintaining ease of use through preset options

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

Enhances user experience by providing a richer cleaning and skin care experience through customizable motion patterns tailored to specific skin types and cleansing tasks, improving cleaning efficiency and skin health.

Implementation Method 1

the system utilizes a planetary gear system, in which the ring gear can be imparted with a sonic vibration that is additive to the otherwise rotary output

Methodology Applied
Scientific EffectPlanetary gear mechanism: Epicyclic Gearing

Data Source

PatentUS10213065B2Dual motor device
Publication Date: 2019.02.26 CHIRP PRODUCTS LLC
  • US10213065B2 patent drawing
  • US10213065B2 patent drawing
  • US10213065B2 patent drawing

AI summary

An apparatus comprising a first motor to control a rotation and a second motor to control a vibration of a moving portion of the apparatus. In one embodiment, the apparatus further comprises a controller to control of a ratio between the rotation and the vibration.