Variable Speed Hair Styling Roller for Uniform Heat Transfer

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Solution Overview

Problem

Existing hair-shaping devices face challenges in achieving uniform and consistent hair shaping due to variable treatment time and pressure, leading to potential overheating or damage, and struggle to balance speed and temperature settings for optimal results.

Innovation Solution

A hairdressing appliance with two jaws, each supporting a treatment roller with a heating element, featuring a speed control mechanism and a brake system to maintain a rotational speed of 12-30 rpm and a temperature of 140-230°C, ensuring consistent heat transfer and pressure, while allowing for easy operation and protection against overheating.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the device moves too rapidly along the hair lock, then the treatment time is reduced, but the hair is not correctly shaped

Engineering Contradiction:

Improvetreatment speedVSAvoidshaping quality

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The roller rotation speed is made variable and adjustable through a motor-driven system with speed control, allowing the device to adapt its rotational speed to match different hair types and desired shaping results, rather than using a fixed or manually controlled speed

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system incorporates speed control mechanisms that allow the user to adjust and monitor the roller rotation speed, enabling optimization of the treatment process by matching the roller speed to the hair thickness and desired outcome

Inventive Principle:

Principle #23Feedback

2Manufacturing precision

If the device moves too slowly along the hair lock, then the shaping quality improves, but overheating and burning of the hair occurs

Engineering Contradiction:

Improveshaping qualityVSAvoidoverheating damage

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The motor-driven roller system with variable speed control allows the device to move at optimized speeds that prevent overheating while maintaining shaping quality, adapting the speed to the hair type and treatment requirements

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

Speed control mechanisms enable monitoring and adjustment of the roller rotation speed to maintain optimal treatment parameters and prevent excessive heat buildup that would damage the hair

Inventive Principle:

Principle #23Feedback

3Stress or pressure

If the roller diameter is increased, then the contact pressure with hair increases, but the device becomes less adaptable to different hair thicknesses

Engineering Contradiction:

Improvecontact pressureVSAvoidadaptability to hair thickness

Core Design Contradiction:

Stress or pressureVSAdaptability or versatility

Solution Approach 1:

The system uses a motor-driven roller with variable speed control, allowing the roller to rotate at different speeds to accommodate various hair thicknesses while maintaining appropriate contact pressure through controlled rotation rather than fixed mechanical pressure

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The roller rotation speed is made variable through motor control, allowing the system to adapt to different hair types by changing the rotational speed parameter rather than relying on fixed roller dimensions or mechanical pressure

Inventive Principle:

Principle #35Parameter changes

4Productivity

If the roller rotation speed is increased, then the treatment time is reduced, but the heat transfer efficiency decreases

Engineering Contradiction:

Improvetreatment speedVSAvoidheat transfer efficiency

Core Design Contradiction:

ProductivityVSTemperature

Solution Approach 1:

The motor-driven system with variable speed control allows optimization of the balance between treatment speed and heat transfer efficiency by adjusting the roller rotation speed to match the desired outcome

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the roller rotation speed parameter through motor control to achieve optimal heat transfer conditions while maintaining efficient treatment time, adapting to different hair types and shaping requirements

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 appliance achieves uniform and persistent hair shaping without damage, ensuring rapid and effective treatment with consistent results, protecting the hair from overheating and promoting a durable, aesthetically pleasing appearance.

Implementation Method 1

a housing connected to at least one rotating heating body for shaping the hair by heat

Methodology Applied

Scientific EffectHeat conduction: Conduction (thermal)

Implementation Method 2

said actuating means comprising a brake cooperating with a roller mounted free to rotate

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentEP2120629B1Hair dressing device

Publication Date: 2011.05.18 SEB SA

Figure 1
Figure 2a~2b
Figure 3a~3b

AI summary

The invention relates to a hair dressing device that comprises two jaws (2, 3), wherein hair can be inserted between the two jaws, one of the ends thereof defining a handle (1) and each at the other end a treatment drum (10, 11) capable of rotation about the longitudinal axis of the jaw, at least one of said drums including a heating member (18). According to the invention, the apparatus includes a means for actuating at least one drum having an outer diameter between 22 mm and 38 mm in order to impart thereto a rotation speed of between 12 rot/min and 30 rot/min, the temperature of the drum (10, 11) at the contact surface with the hair ranging from 140°C to 230°C, and preferably being 200°C.