Hairstyling Device Mandrel With Internal Heating Elements

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Solution Overview

Problem

Existing hairdressing devices have limited chuck heating capacity and lack precise temperature adjustment, leading to inefficient hair styling and limited functionality.

Innovation Solution

A hairdressing device with a hollow mandrel featuring two heating elements on its internal wall for direct heat transfer, allowing for intense heating and precise temperature control, combined with a rotating drum and adjustable rings for various styling options, and a hot air blowing system for enhanced heat distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a heating element is placed in the center of the chuck shaft to create steam, then steam generation is achieved, but the heating capacity of the chuck is limited

Engineering Contradiction:
Improvechuck heating temperatureVSAvoidheating capacity
Core Design Contradiction:
TemperatureVSPower

Solution Approach 1:

The heating element is repositioned from the center of the chuck shaft to the internal wall of the mandrel, changing the spatial dimension of heat application. This allows direct contact heating of the mandrel surface, significantly increasing heating capacity and efficiency while enabling precise temperature control for different styling needs.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Temperature

If a heating element extends through the center of the chuck to create steam, then steam generation is achieved, but precise temperature adjustment of the mandrel is not possible

Engineering Contradiction:
Improvemandrel heating temperature precisionVSAvoidtemperature control precision
Core Design Contradiction:
TemperatureVSMeasurement precision

Solution Approach 1:

The heating element is positioned along the internal wall of the mandrel, creating localized heating zones that can be independently controlled. This allows different sections of the mandrel to be heated to different temperatures, enabling precise temperature adjustment and distribution along the mandrel length for optimized styling results.

Inventive Principle:
Principle #3Local quality

3Volume of stationary object

If the chuck interior space is occupied by a central heating element, then heating function is provided, but the space for hot air blowing system and actuating device is reduced

Engineering Contradiction:
Improvechuck chamber spaceVSAvoidfunctional integration capability
Core Design Contradiction:
Volume of stationary objectVSAdaptability or versatility

Solution Approach 1:

The heating element is extracted from the central chuck shaft location and repositioned to the internal mandrel wall. This extraction frees up the chuck chamber interior space, allowing integration of the hot air blowing system and actuating device within the mandrel structure, thereby enhancing overall functional versatility without compromising heating capability.

Inventive Principle:
Principle #2Taking out (Extraction)

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

Enables effective styling of dry or damp hair, combining functions of a curling iron, straightening iron, and hairbrush, with precise temperature adjustment and improved heat distribution, allowing for multiple hairstyles using the same device.

Implementation Method 1

two heating elements by thermal conduction arranged on an internal wall of the mandrel. Such an arrangement makes it possible to transfer the heat directly through the material of the mandrel

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

this favors the implementation of a hot air blowing system allowing hot air to be blown into the chuck chamber over its entire length, which allows a better distribution of the hot air blown on the hair during heat treatment

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentEP3240454B1Brush-type hairstyling device comprising optimised heating means
Publication Date: 2021.12.22 SEB SA
  • EP3240454B1 patent drawingFigure 1~2
  • EP3240454B1 patent drawingFigure 3~4
  • EP3240454B1 patent drawingFigure 5

AI summary

The invention relates to a hairstyling device (1) comprising: a body (2) designed for handling the device, and a hollow hairstyling mandrel (3) which extends from the body along a longitudinal axis (X), characterised in that it comprises at least one thermal conduction heating element (31, 32) arranged on an inner wall (30) of the mandrel.