Heated Hair Setter Rail Coupling and Thermal Management

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Solution Overview

Problem

Existing heated hair setter systems are either large due to separate heating of hair setters and retention clips, or they risk damaging the clips by direct contact with heating devices, necessitating a compact solution that rapidly heats both components without causing damage.

Innovation Solution

A hair setter apparatus with a housing containing a heater assembly featuring parallel heat delivery rails and hair setters with opposing web plates forming a mounting slot, allowing sliding engagement with the rails for efficient heat transfer while preventing decoupling and clip damage, along with a method for operating this apparatus to ensure rapid heating and secure mounting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If heated hair setter systems provide heat to the hair setter and hair retention clip separately, then the heating effectiveness is improved, but the device size and space requirement increase

Engineering Contradiction:
Improveheating effectivenessVSAvoiddevice size
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

The patent combines the heating functions for both the hair setter and retention clip into a single integrated heating device. The heating device includes a first heating surface that contacts the hair setter and a second heating surface that contacts the retention clip, allowing simultaneous heating of both components through one device rather than requiring separate heating mechanisms.

Inventive Principle:
Principle #5Merging (Combining)

2Volume of moving object

If the system size is reduced by using fewer hair setters and retention clips, then the device compactness is improved, but the heating capacity may be reduced

Engineering Contradiction:
Improvedevice compactnessVSAvoidheating capacity
Core Design Contradiction:
Volume of moving objectVSProductivity

Solution Approach 1:

The integrated heating device consolidates multiple heating functions into a single compact unit. By providing both a first heating surface for the hair setter and a second heating surface for the retention clip within one device, the system maintains full heating capacity while reducing the overall number of components and device size.

Inventive Principle:
Principle #5Merging (Combining)

3Productivity

If the hair retention clip is allowed to directly contact the heating device for heating, then the heating efficiency is improved, but the risk of clip damage increases

Engineering Contradiction:
Improveheating efficiencyVSAvoidclip damage risk
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The heating device features differentiated heating surfaces with distinct properties: a first heating surface designed for contact with the hair setter and a second heating surface designed for contact with the retention clip. This local differentiation allows each surface to be optimized for its specific contact object, enabling efficient heating of the clip without causing damage through inappropriate thermal characteristics.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent introduces a mediated heating approach where the retention clip is heated through a dedicated second heating surface that acts as an intermediary between the heating device and the clip. This intermediary surface provides controlled thermal transfer that is sufficient for heating while preventing the excessive heat or direct contact that would cause damage to the clip material.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Speed

If a compact heated hair setter system is designed to rapidly heat both hair setter and retention clip, then the heating speed is improved, but the risk of overheating and damage increases

Engineering Contradiction:
Improveheating speedVSAvoidoverheating damage
Core Design Contradiction:
SpeedVSObject-affected harmful factors

Solution Approach 1:

The heating device employs locally differentiated heating surfaces where the second heating surface contactable by the retention clip has thermal properties optimized for rapid yet safe heating. This local optimization enables fast heat transfer to the clip while the specific characteristics of this surface prevent overheating and material damage.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The second heating surface serves as a controlled intermediary that mediates the thermal energy transfer to the retention clip. This intermediary provides rapid heating through efficient thermal contact while simultaneously limiting the maximum temperature and heat intensity to prevent damage, thus resolving the contradiction between heating speed and safety.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 solution provides a compact, efficient heating system that rapidly heats hair setters and retention clips, preventing damage to the clips and optimizing space usage, enabling effective hair styling while ensuring user safety.

Implementation Method 1

a first heat delivery rail and a second heat delivery rail mounted in the housing in spaced parallel relationship to each other... The opposing web plates are configured to slidably couple the hair setter to one of the heat delivery rails... for efficient heat transfer

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentEP3785565B1Heated hair setter apparatus and method
Publication Date: 2023.07.05 SPECTRUM BRANDS INC
  • EP3785565B1 patent drawingFigure 1
  • EP3785565B1 patent drawingFigure 2
  • EP3785565B1 patent drawingFigure 3

AI summary

In a hair setter apparatus, a heater assembly is enclosed within a housing. The heater assembly has a longitudinal heat delivery rail mounted in the housing and having a longitudinal axis. The longitudinal heat delivery rail includes a groove extending longitudinally along at least part of the heat delivery rail. A corresponding hair setter has a central body having opposing web plates spaced from each other to define a mounting slot extending longitudinally of the hair setter. The mounting slot is configured to engage the groove of the heat delivery rail upon mounting the hair setter thereon to slidably couple the hair setter to the heat delivery rail for sliding movement longitudinally of heat delivery rail while inhibiting decoupling of the hair setter from the heat delivery rail in a direction transverse to the rail.