Hair Curling Device Stationary Barrel Rotating Mandrel
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Solution Overview
Problem
Conventional hair curling devices require substantial user effort and can cause discomfort or injury due to hair getting stuck or snagged on rotating mandrels, often necessitating complex clutch devices that may fail.
Innovation Solution
A hair curling device with a rotating member that wraps hair around a generally stationary heated barrel, featuring retaining elements and a hair holding tab to automatically curl hair without direct clamping, reducing the need for clutch devices and minimizing hair snagging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a rotating mandrel is used to wrap hair, then hair can be curled automatically, but hair may get stuck or snagged causing discomfort or injury
Solution Approach 1:
Instead of rotating the mandrel to wrap hair (conventional approach), the patent inverts the mechanism by keeping the mandrel stationary and rotating the clamping member to achieve hair wrapping. This inversion eliminates the snagging problem associated with rotating mandrels while maintaining automated curling functionality.
Solution Approach 2:
The patent divides the curling device into distinct functional components: a stationary mandrel, a rotating clamping member, and a motor assembly. This segmentation allows the mandrel to remain fixed (avoiding hair snagging) while the clamping member performs the wrapping function through rotation, resolving the contradiction between automation and safety.
2Object-affected harmful factors
If a clutch device is added to prevent hair snagging, then safety improves, but device complexity increases
Solution Approach 1:
The patent eliminates the need for clutch devices by inverting the rotation mechanism. Instead of rotating the mandrel and using a clutch to control rotation, the clamping member rotates around the stationary mandrel, inherently preventing hair snagging without requiring complex clutch mechanisms.
Solution Approach 2:
The patent extracts and removes the clutch device from the system entirely. By redesigning the curling mechanism to have a stationary mandrel with a rotating clamping member, the harmful function of the clutch (potential failure points) is eliminated while maintaining safety against hair snagging.
3Productivity
If the mandrel rotates to wind hair, then curling efficiency improves, but user control and safety decrease
Solution Approach 1:
The patent inverts the conventional rotating mandrel design by making the mandrel stationary and the clamping member rotatable. This maintains curling efficiency through automated rotation while improving user control, as the stationary mandrel provides stable support and the rotating clamping member can be precisely controlled to wrap hair safely.
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 device reduces user effort and discomfort by automatically curling hair with reduced risk of hair snagging, eliminating the need for complex clutch devices and enhancing safety and ease of use.
Implementation Method 1
the barrel can be heated and a strand of hair is clamped against the mandrel... Heat applied to the mandrel can alter the texture of the hair so as to curl it
Implementation Method 2
the rotating member includes an insert disposed along an inner surface of the hair holding tab to generate a frictional force against hair depressed between the hair holding tab and the hair styling surface
Data Source
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AI summary
The invention relates to a hair styling apparatus, comprising: a heated barrel connected to a handle, the heated barrel defining a hair styling surface; a rotating member disposed at an end of the hair styling surface, the rotating member being configured to (i) rotate relative to the handle, (ii) gather hair of a user, and (iii) wind the hair around the hair styling surface; a tab element extending from an end of the rotating member along the hair styling surface and being spaced from the hair styling surface by a radial spacing, the tab being configured to depress the hair onto the hair styling surface, wherein the tab extends generally longitudinally along the hair styling surface of the heated barrel; and a heating element configured to heat the heated barrel and/or the hair styling surface.