Segmented Brush Implement with Decoupling Mechanism

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing skin treatment devices lack an efficient and versatile brush implement for applying cosmetic compositions with limited power, and there is a need for a device that can effectively apply substances with minimal force to avoid damaging the skin or the device.

Innovation Solution

A skin treatment device with a detachable brush implement featuring bristles of different lengths and materials arranged in sectors, along with a decoupling mechanism and split end filaments, which allows for efficient application of cosmetic compositions while minimizing force and ensuring easy replacement and low vibration operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a brush implement with uniform bristles is used, then the structure is simple, but the application efficiency and versatility are limited

Engineering Contradiction:

Improveapplication efficiencyVSAvoidbrush structure complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The brush implement is segmented into multiple sectors with different bristle characteristics. Each sector contains bristles of specific lengths, materials, and densities tailored for different cosmetic composition types and skin areas, enabling versatile and efficient application without requiring multiple separate brushes

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different sectors of the brush have locally optimized bristle properties - some sectors have longer bristles for cream products, others have shorter stiffer bristles for gel products, and specific sectors have split-end filaments for enhanced product pickup. This local differentiation improves application efficiency for various composition types while maintaining a single integrated brush structure

Inventive Principle:

Principle #3Local quality

2Productivity

If higher force is applied to apply cosmetic composition, then the application speed increases, but the skin may be damaged

Engineering Contradiction:

Improveapplication speedVSAvoidskin damage

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The brush implements parameter variations in bristle properties across different sectors - softer bristles in sectors for delicate skin areas, stiffer bristles for more resilient areas. This allows the user to apply cosmetic composition at higher speeds without causing skin damage, as the appropriate bristle softness is automatically selected based on the application sector

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The brush is designed to rotate at controlled speeds with the ability to vary rotational velocity. The decoupling mechanism allows dynamic adjustment of brush speed, enabling faster application on resilient skin areas while slowing down for delicate areas, thus maintaining high overall productivity without causing skin damage

Inventive Principle:

Principle #15Dynamics

3Power

If the brush is firmly coupled to the drive unit, then the power transmission is efficient, but the device and skin may be damaged during operation

Engineering Contradiction:

Improvepower transmission efficiencyVSAvoiddevice and skin damage

Core Design Contradiction:

PowerVSObject-affected harmful factors

Solution Approach 1:

A decoupling mechanism is incorporated between the brush implement and drive unit that acts as a protective buffer. This mechanism allows the brush to be firmly coupled for efficient power transmission during normal operation, but can decouple automatically if excessive force is detected, preventing damage to both the device and skin before damage occurs

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The decoupling mechanism serves as an intermediary element between the drive unit and brush implement. It mediates the power transmission by allowing controlled slippage or disengagement when force exceeds safe thresholds, thus protecting the system while maintaining efficient power transfer during normal use

Inventive Principle:

Principle #24Intermediary (Mediator)

4Ease of manufacture

If the brush implement is fixed, then the structure is simple, but replacement and cleaning become difficult

Engineering Contradiction:

Improvestructural simplicityVSAvoidbrush replacement and cleaning

Core Design Contradiction:

Ease of manufactureVSEase of repair

Solution Approach 1:

The brush implement is designed as a detachable module that can be easily separated from the drive unit. This segmentation allows the brush to be quickly replaced or cleaned without disassembling the entire device, maintaining structural simplicity while greatly improving ease of maintenance and replacement

Inventive Principle:

Principle #1Segmentation

Data Source

PatentEP2700331B1Brush implement for a skin treatment device

Publication Date: 2018.06.20 BRAUN GMBH

Figure 1
Figure 2
Figure 3

AI summary

The present invention is concerned with a brush implement for the use with a skin treatment device (10), the brush implement having bristles of a first type (52) and bristles of a second type (54), wherein the bristles of the first type (52) are longer than the bristles of the second type (54) and are positioned closer to the outer contour (58) of the brush implement and the bristles form at least three distinguishable sectors.