Bone-Shaped Curling Device with Rotating Shaping Bodies
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Solution Overview
Problem
Existing hair styling devices are limited in their ability to curl or wave hair over its entire length without multiple applications and are not suitable for forming larger curls or waves, often requiring manual handling and being cumbersome to use.
Innovation Solution
A hair styling device with bone-shaped cross-sectional geometry, featuring two head sections and a waisted middle section, where the shaped bodies rotate in opposite directions, creating a cyclically changing hair styling gap that allows for continuous curling or waving without excessive tension, combining two hair styling mechanisms for efficient and lasting results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If toothed cross-sectional geometry forming elements are used with interlocking position, then hair can be automatically drawn into hair-shaping gap during rotation, but the device is only suitable for creating relatively small curls
Solution Approach 1:
The patent applies dynamics by making the forming bodies rotatable about their longitudinal axes rather than stationary. The bone-shaped cross-section with convexly rounded head sections and concave waisted middle section creates a dynamic interlocking mechanism that automatically draws hair into the shaping gap during rotation, enabling continuous curling along the entire hair length while accommodating larger curl formations
Solution Approach 2:
The patent transitions from the traditional toothed cross-sectional geometry to a bone-shaped cross-section with three-dimensional convexly rounded head sections and concave waisted middle sections. This dimensional change creates a more complex spatial interlocking mechanism that maintains automatic hair drawing capability while expanding the range of achievable curl sizes and styles
2Productivity
If conventional hair shaping devices are used, then hair can be shaped, but multiple applications are required to curl hair over its entire length
Solution Approach 1:
The patent implements continuity of useful action through the rotatable bone-shaped forming bodies that continuously draw hair into the shaping gap during rotation. This allows a single continuous operation to curl the entire length of a hair strand, eliminating the need to repeatedly apply the device to different sections and significantly reducing the time required for complete hair styling
3Adaptability or versatility
If device rotates around longitudinal axis to create curl, then hair can be curled, but the device must be used with both hands making it cumbersome
Solution Approach 1:
The patent applies self-service by designing the rotatable bone-shaped forming bodies to automatically draw and position hair within the shaping gap during rotation. The interlocking convexly rounded head sections and concave waisted middle sections create a self-guiding mechanism that reduces the need for manual hair manipulation, allowing one-handed operation while maintaining effective curl formation
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 the formation of larger curls or waves over the entire hair length without multiple device applications, allowing for easy handling and efficient hair shaping with minimal tension, using a combination of pressure and heat to create lasting styles.
Implementation Method 1
at least one of these forming elements is heated, but typically both are, for example, with a resistance heater, a PTC heater, or similar technology
Implementation Method 2
A strand of hair placed between the forming bodies in the open hair-shaping device is shaped by pressing the arms together and simultaneously applying heat to the hair held between the forming bodies
Data Source
Figure 1~2
Figure 3a~3j
Figure 4a~4b
AI summary
The invention relates to a hair-styling device which serves to curl or wave hair. Said hair-styling device comprises two styling bodies (5, 5.1), which interact with each other to style the hair and can be rotated about the longitudinal axis of the styling bodies and of which at least one of the styling bodies (5, 5.1) is driven, which styling bodies (5, 5.1) have a shell surface contoured by elevations and recesses and are arranged in relation to each other in such a way that complementary contours of the two styling bodies (5, 5.1) mesh in the course of rotation of the two styling bodies. The styling bodies (5, 5.1) have a bone-shaped cross-sectional geometry having two head sections (7, 7.1) designed with a shell surface (8) that is convexly rounded at least in some sections and having a tapered central section (6) located between the head sections and designed with a concave shell surface. The radius of curvature in the region of the central apex (9) of the head sections (7, 7.1) of the one styling body (5, 5.1, 5.2) corresponds to the radius of curvature of the tapered central section (6) of the other styling body. The axis of rotation (11, 11.1) of the styling bodies (5, 5.1) is arranged in the central section (6) centrally between the central apexes (9) of the head sections (7, 7.1).