Skin Care Device Brush Module Detection for Adaptive Motor Control

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Solution Overview

Problem

Existing skin care devices using manual application of cleansing products may not deliver cleaning agents evenly and can lead to bacterial infections, necessitating a more effective and even method for facial skin care.

Innovation Solution

A skin care device with a brush module mounting system that includes a vibration motor, rotating shaft, and a controller to detect the type of brush module mounted, allowing for optimal operation by driving either the vibration motor or rotating motor based on the detected brush type, ensuring even cleaning and minimizing bacterial transfer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual application of cleansing products is used, then simplicity of use is maintained, but evenness of cleaning and hygiene are deteriorated

Engineering Contradiction:
Improvesimplicity of useVSAvoidevenness of cleaning
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The skin care device enables self-service cleaning by using automated vibration and rotation mechanisms to apply cleansing products evenly across the skin surface without requiring manual rubbing motions, thereby maintaining simplicity while improving cleaning evenness

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces the manual mechanical rubbing action with an automated vibration motor and rotation motor system that generates controlled vibrational and rotational movements of the brush module, achieving more uniform product distribution and skin contact

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Device complexity

If manual washing with hands is used, then no additional devices are needed, but bacterial infection risk increases

Engineering Contradiction:
Improvenumber of devicesVSAvoidbacterial infection risk
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The skin care device acts as an intermediary tool between the user's hands and the skin surface, using a detachable brush module that can be easily removed and cleaned or replaced, thereby reducing direct hand-to-skin contact and minimizing bacterial transfer while remaining simple in design

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The device is segmented into a main body and a detachable brush module, allowing the brush module to be separated for independent cleaning or replacement, which reduces cross-contamination risks while keeping the overall device structure simple and easy to maintain

Inventive Principle:
Principle #1Segmentation

3Device complexity

If a single brush module is used, then device structure is simple, but adaptability to different skin care needs is limited

Engineering Contradiction:
Improvebrush module structureVSAvoidadaptability to different brush types
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The brush module mounting part is designed with universal compatibility to accept multiple types of brush modules (e.g., different bristle densities, materials, or configurations), allowing a single device body to perform multiple skin care functions by simply changing the brush module, thereby achieving versatility without increasing device complexity

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

Solution Approach 2:

The device incorporates dynamic adaptability through a controller that can detect which brush module is mounted and automatically adjust operational parameters such as vibration frequency, rotation speed, or motor selection to optimize performance for each specific brush type and skin care need

Inventive Principle:
Principle #15Dynamics

4Adaptability or versatility

If vibration motor and rotation motor are always driven, then skin care function is comprehensive, but energy consumption increases

Engineering Contradiction:
Improveskin care functionVSAvoidenergy consumption
Core Design Contradiction:
Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The controller dynamically selects and adjusts motor operation based on the detected brush module type, driving only the necessary motor (vibration or rotation) at appropriate power levels, thereby providing comprehensive skin care functions while minimizing energy consumption by avoiding unnecessary motor operation

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes operational parameters such as motor selection, vibration frequency, and rotation speed based on the mounted brush module characteristics, allowing comprehensive skin care treatment with optimized energy usage by matching motor output to the specific requirements of each brush type

Inventive Principle:
Principle #35Parameter changes

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 device provides effective and even skin care by automatically detecting and adapting to different brush types, ensuring optimal cleaning functions and preventing brush detachment during use, thus enhancing skin care efficacy and safety.

Implementation Method 1

the mounting detection sensor may include a Hall sensor

Methodology Applied
Scientific EffectHall effect: Hall Effect

Implementation Method 2

a vibration motor configured to vibrate the brush module mounting part and the brush module in one direction

Methodology Applied
Scientific EffectVibration: Vibration

Implementation Method 3

a rotating motor configured to be connected to the rotating shaft

Methodology Applied
Scientific EffectRotation:

Data Source

PatentUS12089728B2Skin care device and operation method therefor
Publication Date: 2024.09.17 LG ELECTRONICS INC
  • US12089728B2 patent drawing
  • US12089728B2 patent drawing
  • US12089728B2 patent drawing

AI summary

A skin care device according to an embodiment of the present disclosure includes a brush module mounting part on which a brush module having a brush fixed thereto is mounted, a vibration motor configured to vibrate the brush module mounting part and the brush module in one direction, a rotating shaft formed in the one direction and configured to be fastened to the brush module mounting part, a rotating motor configured to be connected to the rotating shaft, a mounting detection sensor configured to be obtain a sensing value related to a mounting of the brush module, and a controller configured to detect a type of the mounted brush module on the basis of the sensing value and control driving of at least one of the vibration motor and the rotating motor according to a detected type.