Beauty apparatus

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Solution Overview

Problem

Conventional beauty apparatuses exhibit uneven skin cleaning power between the rotation center and outer circumference due to differing numbers of brushes, leading to inconsistent dirt removal.

Innovation Solution

A beauty apparatus design with a greater number of thicker, silicon-made brushes around the rotation center and thinner brushes along the outer circumference, ensuring uniform dirt removal by alternating cleaning regions and reducing skin irritation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If brushes are disposed with greater number along the outer circumference than around the rotation center, then the brush part can be manufactured with uniform brush distribution, but skin cleaning power becomes uneven between rotation center side and outer circumference side

Engineering Contradiction:

Improveuniform brush distributionVSAvoidskin cleaning power uniformity

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent applies local quality by disposing a greater number of second brushes around the rotation center compared to the outer circumference. This non-uniform distribution compensates for the lower peripheral velocity at the rotation center, ensuring that each region of the skin surface receives appropriate cleaning intensity. The different brush densities at different locations create uniform overall cleaning效果 across the skin surface.

Inventive Principle:

Principle #3Local quality

2Productivity

If thicker brushes are used around the rotation center, then dead skin cells can be removed more effectively, but skin irritation may increase in that region

Engineering Contradiction:

Improvedead skin cell removal efficiencyVSAvoidskin irritation

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent uses thicker second brushes specifically around the rotation center where dead skin cells accumulate, providing targeted exfoliation where it is most needed. The alternating arrangement of first and second brushes ensures that no single area receives excessive mechanical action, distributing the cleaning load and reducing localized skin irritation while maintaining effective dead skin cell removal.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The alternating arrangement of first brushes and second brushes creates a periodic cleaning pattern as the brush part rotates. This periodic action allows different brush types to sequentially contact the skin surface, providing varied cleaning mechanisms that prevent over-agitation of any single area, thereby reducing skin irritation while maintaining cleaning effectiveness.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS10349731B2Beauty apparatus

Publication Date: 2019.07.16 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

A beauty apparatus according to the present disclosure includes a main body including a grip, and a brush part rotatably mounted to the main body. The brush part includes a first brush having a tuft of a plurality of bristles, and a second brush thicker than each of the plurality of bristles. A plurality of the second brushes disposed around a rotation center of the brush part is made greater in number than a plurality of the second brushes disposed along an outer circumference of the brush part. The beauty apparatus is capable of more uniform removal of dirt from skin.