Haircare Curling Attachment With Switchable Airflow Direction

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing haircare appliances with airflow attachments for curling hair lack the ability to efficiently and conveniently change the direction of airflow to control curl formation without requiring attachment changes.

Innovation Solution

The attachment features moveable members that rotate between positions to alter airflow direction, allowing discharge in either a clockwise or counterclockwise direction, controlled by a user-actuated selector such as a dial, which aligns openings to direct airflow tangentially to the attachment surface, utilizing the Coanda effect to attract hair for curling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single attachment is used for curling hair, then the device structure is simplified, but the ability to change curl direction is limited

Engineering Contradiction:

Improveattachment structureVSAvoidcurl direction control

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The attachment incorporates rotatable members that can dynamically change position between first and second positions, allowing the airflow outlets to switch between clockwise and counterclockwise discharge directions. This dynamic mechanism enables a single attachment to provide multiple curling directions without requiring multiple separate attachments.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If multiple attachments are provided for different curl directions, then curl control versatility is improved, but device complexity and operation convenience deteriorate

Engineering Contradiction:

Improvecurl direction controlVSAvoidattachment switching

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The single attachment is designed with multi-functionality to perform both clockwise and counterclockwise curling operations. By integrating rotatable members with outlets positioned at different locations, the attachment can switch between different curling directions internally, eliminating the need for users to physically swap between multiple specialized attachments.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If rotatable members are added to change airflow direction, then curl direction control is improved, but device complexity increases

Engineering Contradiction:

Improveairflow direction controlVSAvoidattachment structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The rotatable members are nested within the attachment housing, with outlets positioned between the rotatable members and the housing. This nested configuration allows the airflow direction control mechanism to be integrated compactly within the attachment structure, minimizing the increase in overall device complexity while maintaining the ability to switch between different curling directions.

Inventive Principle:

Principle #7Nested doll (Nesting)

4Adaptability or versatility

If airflow outlets are positioned at different locations, then curl direction versatility is improved, but manufacturing precision requirements increase

Engineering Contradiction:

Improveairflow discharge patternVSAvoidoutlet positioning

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The outlets are strategically positioned at asymmetric locations on the rotatable members and housing, with first outlets arranged to discharge airflow in a clockwise direction and second outlets arranged to discharge in a counterclockwise direction. This asymmetric positioning allows the attachment to achieve versatile curling directions while the manufacturing process can accommodate the specific geometric requirements through precision molding or machining of the outlet features.

Inventive Principle:

Principle #4Asymmetry

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 quick and intuitive adjustment of curl direction by changing airflow direction within a single attachment, enhancing user convenience and curl control without needing to switch attachments.

Implementation Method 1

The airflow discharged from the outlets is attracted to an external surface of the attachment

Methodology Applied

Scientific EffectCoanda effect: Coanda Effect

Data Source

PatentEP4213684B1Attachment for a haircare appliance

Publication Date: 2025.12.24 DYSON TECH LTD

Figure 1
Figure 2
Figure 3

AI summary

An attachment is described for a haircare appliance. The attachment comprises an inlet for receiving an airflow, and a plurality of outlets (113a, 113b) through which the airflow is discharged. The attachment further comprises one or more members (140) moveable between a first position and a second position. The airflow is discharged from the outlets in a clockwise direction when the members are in the first position, and the airflow is discharged from the outlets in a counterclockwise direction when the members are in the second position.