Patentable/Patents/US-20250344824-A1
US-20250344824-A1

Straightening and Curling Dual-Purpose Hairdressing Device

PublishedNovember 13, 2025
Assigneenot available in USPTO data we have
Inventorsnot available in USPTO data we have
Technical Abstract

A straightening and curling dual-purpose hairdressing device is provided, relating to the technical field of hairdressing devices. The straightening and curling dual-purpose hairdressing device includes a main body. The main body is of a hollow structure. A control circuit is integrated inside the main body. One end of the main body is provided with an air inlet and another end of the main body is connected to an air nozzle, whereby forming inside the main body a fluid channel extended from the air inlet to the air nozzle. The fluid channel has provided therein a motor and a heating unit electrically connected to the control circuit respectively.

Patent Claims

Legal claims defining the scope of protection, as filed with the USPTO.

1

. A straightening and curling dual-purpose hairdressing device, comprising a main body (), the main body () being of a hollow structure, a control circuit () being integrated inside the main body (), one end of the main body () being provided with an air inlet () and another end of the main body () being connected to an air nozzle (), whereby forming inside the main body () a fluid channel extended from the air inlet () to the air nozzle (); the fluid channel having provided therein a motor () and a heating unit () electrically connected to the control circuit () respectively; and the fluid channel being configured to generate a directional fluid through the motor () that enters along the air inlet () and flows through the heating unit () before being blown out from the air nozzle (), wherein the air nozzle () comprises an air outlet component () and an air blocking component (), wherein

2

. The straightening and curling dual-purpose hairdressing device according to, wherein the straightening surface () is of a flat structure, the straightening surfaces () of the two hair treatment bodies () being spaced apart from each other, allowing formation of a space between the two straightening surfaces () for hair to pass through; and wherein the curling surface () is of a curved surface structure, centers corresponding to the curling surfaces () of the two hair treatment bodies () being located on one same axis.

3

. The straightening and curling dual-purpose hairdressing device according to, wherein the straightening air outlet () is arranged as an elongated structure along a length direction of the straightening surface (); wherein both the straightening air outlets () are arranged close to one same side of the two straightening surfaces () and facing toward another side of the straightening surfaces () at an angle, thereby guiding hair to enter from one side of the straightening surfaces () and blow out from another side of the straightening surfaces ().

4

. The straightening and curling dual-purpose hairdressing device according to, wherein the straightening air outlet () of one straightening surface () is extended with a first guide channel (), while the straightening air outlet () of another straightening surface () is configured for the first blocking part () to expose out of the hair treatment body (); and wherein a part of the first blocking part () exposed out of the hair treatment body () is formed with a second guide channel () communicated with the interior of the hair treatment body (), the first guide channel () and the second guide channel () being configured to guide the directional fluid to flow out toward another side of the straightening surfaces ().

5

. The straightening and curling dual-purpose hairdressing device according to, wherein both the first guide channel () and the second guide channel () have provided therein a plurality of first air deflectors () that are uniformly distributed.

6

. The straightening and curling dual-purpose hairdressing device according to, wherein a plurality of curling air outlets () are provided that are uniformly distributed, the plurality of curling air outlets () being arranged as elongated structures along a length direction of the curling surface (), and the curling air outlets () being arranged at an angle tangent to the curling surface ().

7

. The straightening and curling dual-purpose hairdressing device according to, wherein the curling surface () has an outside formed with a plurality of protrusion parts () corresponding to the curling air outlets (), the curling air outlets () arranged at an angle tangent to the curling surface () being formed by means of the protrusion parts (), the curling air outlet () is extended with a third guide channel () along inside of the protrusion part (), wherein the third guide channel () is configured to guide the directional fluid to flow out at an angle tangent to the curling surface ().

8

. The straightening and curling dual-purpose hairdressing device according to, wherein the third guide channel () has provided therein a plurality of second air deflectors () that are uniformly distributed.

9

. The straightening and curling dual-purpose hairdressing device according to, wherein the toggle element () comprises a long hole () formed on the outer ring body () and a toggle part () formed on the inner ring body (), the toggle part () extending out of the outer ring body () along the long hole (), and the toggle part () being capable of sliding back and forth along the long hole ().

Detailed Description

Complete technical specification and implementation details from the patent document.

The present disclosure relates to the technical field of hairdressing devices, more particularly to a straightening and curling dual-purpose hairdressing device.

In the field of hairdressing tools, as consumer demand for hairstyle diversity continues to grow, multi-functional styling tools have become the focal point of the market. Users not only want to quickly straighten their hair for a sleek look, but also desire the convenience of creating natural curls to suit various occasion-based styling needs. However, existing hairdressing device products have a single function, with most products featuring only straightening or curling capability. This fails to fully meet users' diverse styling needs for both straight and curled hairstyles.

From the perspective of structural design, conventional straighteners usually have straightening plates of flat structure. Two straightening plates can only apply vertical pressure and heat to hair when closed. This structural design determines that it is only suitable for straightening hair. However, curling irons adopt an arc-shaped roller structure, which achieves a curling effect by wrapping hair around the roller and thermal-shaping it. The two structures are independent of each other and their functions are difficult to be integrated into a single device. To integrate straightening and curling functions, a novel structure needs to be designed that can apply vertical pressure to hair to achieve straight hair and can also curl and shape hair through a special structure. However, there is no mature integrated structural design solution available currently.

In terms of airflow design, the airflow design of the existing hairdressing devices is made around a single function. Blow-dry straighteners for straightening hair are provided with an air nozzle that only blows out a hot airflow of a single direction, usually parallel to the straightening plates, with the aim of quickly drying hair and assisting in straightening and shaping. The airflow design of the curling irons focuses on evenly wrapping around hair, helping curly hair to quickly shape. Since the two functions have significant differences in the requirements for airflow direction, airflow speed and temperature, existing hairdressing devices are difficult to meet the different needs of straight and curly hair simultaneously through a single airflow system. Therefore, developing an integrated hairdressing device that combines straightening and curling functions requires innovative improvements in structural design and airflow system to fill the market gap and meet the growing demand for multifunctional hairdressing among consumers.

In order to overcome the above defects, the present disclosure aims to provide a technical scheme capable of solving the above problems.

A straightening and curling dual-purpose hairdressing device includes a main body. The main body is of a hollow structure. A control circuit is integrated inside the main body. One end of the main body is provided with an air inlet and another end of the main body is connected to an air nozzle, whereby forming inside the main body a fluid channel extended from the air inlet to the air nozzle. The fluid channel has provided therein a motor and a heating unit electrically connected to the control circuit respectively. The fluid channel is configured to generate a directional fluid through the motor that enters along the air inlet and flows through the heating unit before being blown out from the air nozzle, wherein the air nozzle includes an air outlet component and an air blocking component.

The air outlet component includes an outer ring body fixedly connected to the main body and two hair treatment bodies formed on the outer ring body. The two hair treatment bodies are of a hollow structure and are communicated with the fluid channel through the outer ring body. The two hair treatment bodies are provided with straightening surfaces arranged facing each other to clamp hair therebetween and curling surfaces arranged back to back to wrap hair thereon. The straightening surfaces are formed with straightening air outlets. The directional fluid passes through the straightening air outlets to guide hair between the two straightening surfaces and blow it in one same direction. The curling surfaces are formed with curling air outlets, and the directional fluid passes through the curling air outlets to guide hair to wrap around the curling surfaces.

The air blocking component includes an inner ring body rotatably connected to an inner side of the outer ring body and two blocking bodies formed on the inner ring body and extended into interiors of the two hair treatment bodies respectively. The blocking body is provided with a first blocking part configured to block the straightening air outlet and a second blocking part configured to block the curling air outlet.

A toggle element configured to drive rotation of the inner ring body is arranged at the inner ring body and the outer ring body, allowing the inner ring body to rotate between two positions. When the inner ring body is rotated to one position, the first blocking part blocks the straightening air outlet and the second blocking part is removed from the curling air outlet.

Wherein when the inner ring body is rotated to another position, the first blocking part is removed from the straightening air outlet and the second blocking part blocks the curling air outlet.

Preferably, the straightening surface is of a flat structure. The straightening surfaces of the two hair treatment bodies are spaced apart from each other, allowing formation of a space between the two straightening surfaces for hair to pass through. The curling surface is of a curved surface structure, centers corresponding to the curling surfaces of the two hair treatment bodies are located on one same axis.

Preferably, the straightening air outlet is arranged as an elongated structure along a length direction of the straightening surface. Both the straightening air outlets are arranged close to one same side of the two straightening surfaces and facing toward another side of the straightening surfaces at an angle, thereby guiding hair to enter from one side of the straightening surfaces and blow out from another side of the straightening surfaces.

Preferably, the straightening air outlet of one straightening surface is extended with a first guide channel, while the straightening air outlet of another straightening surface is configured for the first blocking part to expose out of the hair treatment body. A part of the first blocking part exposed out of the hair treatment body is formed with a second guide channel communicated with the interior of the hair treatment body. The first guide channel and the second guide channel are configured to guide the directional fluid to flow out toward another side of the straightening surfaces.

Preferably, both the first guide channel and the second guide channel have provided therein a plurality of first air deflectors that are uniformly distributed.

Preferably, a plurality of curling air outlets are provided that are uniformly distributed. The plurality of curling air outlets are arranged as elongated structures along a length direction of the curling surface, and the curling air outlets are arranged at an angle tangent to the curling surface.

Preferably, the curling surface has an outside formed with a plurality of protrusion parts corresponding to the curling air outlets. The curling air outlets arranged at an angle tangent to the curling surface are formed by means of the protrusion parts. The curling air outlet is extended with a third guide channel along inside of the protrusion part. The third guide channel is configured to guide the directional fluid to flow out at an angle tangent to the curling surface.

Preferably, the third guide channel has provided therein a plurality of second air deflectors that are uniformly distributed.

Preferably, the toggle element includes a long hole formed on the outer ring body and a toggle part formed on the inner ring body. The toggle part extends out of the outer ring body along the long hole, and the toggle part is capable of sliding back and forth along the long hole.

Compared with the existing technologies, the present disclosure has the following beneficial effects.

In terms of function, this device solves the limitation that conventional blow-dry straighteners or blow-dry curling irons have a single function. It integrates both straightening and curling functions into one unit, and thus can meet the diverse hairstyling needs of users. Therefore, the users do not have to purchase straightening and curling tools separately, thereby saving costs and storage space. In addition, the structure design is ingenious. Through the rotatable air blocking component and the uniquely designed hair treatment body, a simple sliding operation can realize toggling between straightening and curling functions, whereby the operation is simple and the difficulty of usage is reduced. From the perspective of user experience, a reasonable airflow design enables the hot airflow to be more accurately acted on hair no matter in the straightening or curling mode, improving the hairdressing efficiency.

Additional aspects and advantages of the present disclosure will be partially presented in the following description, some of which will become apparent from the following description or learned through practice of the present disclosure.

A clear and complete description as below is provided for the technical scheme in the embodiments of the present disclosure. Apparently, the embodiments described hereinafter are merely part embodiments of the present disclosure, rather than all of the embodiments. All other embodiments obtained by the ordinary skill in the art based on the embodiments in the present disclosure without creative work are intended to be included in the scope of protection of the present disclosure.

Referring toto, in an embodiment of the present disclosure, a straightening and curling dual-purpose hairdressing device includes a main body. The main bodyis of a hollow structure. A control circuitis integrated inside the main body. One end of the main bodyis provided with an air inletand another end of the main bodyis connected to an air nozzle, whereby forming inside the main bodya fluid channel extended from the air inletto the air nozzle. The fluid channel has provided therein a motorand a heating unitelectrically connected to the control circuitrespectively. The fluid channel is configured to generate a directional fluid through the motorthat enters along the air inletand flows through the heating unitbefore being blown out from the air nozzle, wherein the air nozzleincludes an air outlet componentand an air blocking component.

The air outlet componentincludes an outer ring bodyfixedly connected to the main bodyand two hair treatment bodiesformed on the outer ring body. The two hair treatment bodiesare of a hollow structure and are communicated with the fluid channel through the outer ring body. The two hair treatment bodiesare provided with straightening surfacesarranged facing each other to clamp hair therebetween and curling surfacesarranged back to back to wrap hair thereon. The straightening surfacesare formed with straightening air outlets. The directional fluid passes through the straightening air outletsto guide hair between the two straightening surfacesand blow it in one same direction. The curling surfacesare formed with curling air outlets. The directional fluid passes through the curling air outletsto guide hair to wrap around the curling surfaces.

The air blocking componentincludes an inner ring bodyrotatably connected to an inner side of the outer ring bodyand two blocking bodiesformed on the inner ring bodyand extended into interiors of the two hair treatment bodiesrespectively. The blocking bodyis provided with a first blocking part/configured to block the straightening air outletand a second blocking part/configured to block the curling air outlet.

A toggle elementconfigured to drive rotation of the inner ring bodyis arranged at the inner ring bodyand the outer ring body, allowing the inner ring bodyto rotate between two positions. When the inner ring bodyis rotated to one position, the first blocking part/blocks the straightening air outletand the second blocking part/is removed from the curling air outlet. When the inner ring bodyis rotated to another position, the first blocking part/is removed from the straightening air outletand the second blocking part/blocks the curling air outlet.

When the straightening and curling dual-purpose hairdressing device is working, after the device is turned on, the control circuitstarts the motorand the heating unit. An airflow generated by the motorenters the fluid channel inside the main bodyfrom the air inletand then flows through the heating unitto be heated, and finally forms a directional hot airflow to be blown out from the air nozzle. When straight hair is needed, just rotate the inner ring bodyby means of the toggle element, so that the first blocking part/is removed from the straightening air outletand the second blocking part/blocks the curling air outlet, then the hot airflow enters the hair treatment bodythrough the outer ring bodyand is blown out form the straightening air outlet. The directional fluid guides hair between the straightening surfacesof the two hair treatment bodiesand blow it in one same direction. While the straightening surfacesare restricting the hair, the keratin structure in the hair is changed under the function of the hot airflow, and the hydrogen bond is rearranged, thereby achieving an effect of straightening hair. When curly hair is needed, slide the toggle elementonce again, so that the inner ring bodyis rotated to another position, allowing the first blocking part/to block the straightening air outletand the second blocking part/to remove from the curling air outlet. Then the hot airflow is blown out from the curling air outlet, and the directional fluid guides hair to wrap around the curling surfaces, where the hot airflow heats and shapes the rolled hair to create a curly hairstyle.

Through the above arrangement, this device solves the limitation that conventional blow-dry straighteners or blow-dry curling irons have a single function. It integrates both straightening and curling functions into one unit, and thus can meet the diverse hairstyling needs of users. Therefore, the users do not have to purchase straightening and curling tools separately, thereby saving costs and storage space. In addition, the structure design is ingenious. Through the rotatable air blocking componentand the uniquely designed hair treatment body, a simple sliding operation can realize toggling between straightening and curling functions, whereby the operation is simple and the difficulty of usage is reduced. From the perspective of user experience, a reasonable airflow design enables the hot airflow to be more accurately acted on hair no matter in the straightening or curling mode, improving the hairdressing efficiency.

Referring to, on the basis of the above technical scheme, the straightening surfaceis of a flat structure. The straightening surfacesof the two hair treatment bodiesare spaced apart from each other, allowing formation of a space between the two straightening surfacesfor hair to pass through, which is convenient for a user to smoothly pass hair through this space for straightening. The curling surfaceis of a curved surface structure. Centers corresponding to the curling surfacesof the two hair treatment bodiesare located on one same axis. By utilizing the Coanda effect, the device causes hair to tightly adhere to and wrap around the curved surface under the action of hot airflow. This facilitates the formation of curls with uniform curvature and neat shape, enhancing both the aesthetic appeal and longevity of the curls. Additionally, this structural design ensures a smoother curling process.

Referring toto, on the basis of the above technical scheme, the straightening air outletis arranged as an elongated structure along a length direction of the straightening surface. Both the straightening air outletsare arranged close to one same side of the two straightening surfacesand facing toward another side of the straightening surfacesat an angle, thereby guiding hair to enter from one side of the straightening surfacesand blow out from another side of the straightening surfaces, which ensures the hair to be evenly heated during the entire straightening process and effectively avoids local overheat damage to hair. Meanwhile, this arrangement of angle can form an airflow thrust, guiding hair to smoothly enter from one side of the straightening surfacesand blow out from another side of the straightening surfaces, enhancing the straightening efficiency and operating convenience.

The straightening air outletof one straightening surfaceis extended with a first guide channel, while the straightening air outletof another straightening surfaceis configured for the first blocking part/to expose out of the hair treatment body. A part of the first blocking part/exposed out of the hair treatment bodyis formed with a second guide channelcommunicated with the interior of the hair treatment body. The first guide channeland the second guide channelare configured to guide the directional fluid to flow out toward another side of the straightening surfaces. The arrangement of the first guide channeland the second guide channelfurther enhances the guiding effect of the directional fluid, causing the hot airflow to be more accurately acted on hair. This strengthens the wrapping capability and acting force of the hot airflow on hair during straightening, ensuring closer adherence of hair to the straightening surfaces, thus improving the straightness and flatness of the straightening effect.

Both the first guide channeland the second guide channelhave provided therein a plurality of first air deflectorsthat are uniformly distributed. The first air deflectors are capable of dividing the hot airflow into multiple fine and uniform airflows, preventing the hot airflow from being overly concentrated or turbulent, not only ensuring the hair to be heated more evenly and delicately, but also reducing the impact of the airflow on the hair, minimizing issues such as frizz and flyaways, thereby further enhancing the user experience during the straightening process and achieving more ideal and superior straightening effects.

Referring toto, on the basis of the above technical scheme, a plurality of curling air outletsare provided that are uniformly distributed. The plurality of curling air outletsare arranged as elongated structures along a length direction of the curling surface, thereby enabling the hot airflow to evenly cover the hair rolling areas and preventing uneven local heating that could affect the curling effect. The curling air outletsare arranged at an angle tangent to the curling surface. The curling surfacehas an outside formed with a plurality of protrusion partscorresponding to the curling air outlets. The curling air outletsarranged at an angle tangent to the curling surfaceare formed by means of the protrusion parts, which then form a unique air channel in conjunction with the plurality of protrusion partson the outside of the curling surface. As a result, the hot airflow is blown out in the direction tangent to the curling surfaceand is consistent with the rolling direction of hair. The generated airflow force can guide hair to tightly adhere to the curling surface, enhancing the styling effect and three-dimensional appearance of curling hair. The curling air outletis extended with a third guide channelalong inside of the protrusion part, wherein the third guide channelis configured to guide the directional fluid to flow out at an angle tangent to the curling surface, so that the hot airflow is more accurately acted on hair to enhance the curling and styling effect. The third guide channelhas provided therein a plurality of second air deflectorsthat are uniformly distributed, whereby dividing the hot airflow into delicate and gentle airflows to reduce the impact of the hot airflow on hair and to prevent the hair being hurt by high temperature and strong airflow. Meanwhile, it can facilitate a more uniform penetration of hot airflow into the hair, creating a more refined and smoother curl style while significantly improving users' styling experience and the final hairstyle quality.

Referring toto, on the basis of the above technical scheme, the toggle elementincludes a long holeformed on the outer ring bodyand a toggle partformed on the inner ring body. The toggle partextends out of the outer ring bodyalong the long hole, and the toggle partis capable of sliding back and forth along the long hole. A user can directly slide the toggle partextended out of the outer ring bodywith a hand to move it back and forth along the long hole. This simple and intuitive operation can enable rotation of the inner ring bodyand thus quickly switch between on and off states of the straightening air outletand the curling air outlets, thereby realizing toggling between straightening and curling functions. Such structure is simple to operate and reduces the learning cost of users. Furthermore, the long holeplays a limiting and guiding role in the movement of the toggle part, ensuring the toggle partto move stably during the operation, avoiding the inner ring bodybeing deviated or stuck during rotation, and guaranteeing the smoothness and reliability of function toggling of the hairdressing device.

For those skilled in the art, obviously, the present disclosure is not limited to the details of the above exemplary embodiments, and the present disclosure may be realized by other specific forms without departing from the spirit or basic features of the present disclosure. Therefore, no matter from which point, the embodiments should be viewed as exemplary, but restrictive. The scope of the present disclosure is limited by claims appended herein but by the description above. Therefore, all changes falling within the implication and scope of equivalent elements of the claims are intended to be included in the present disclosure.

Patent Metadata

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Publication Date

November 13, 2025

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Cite as: Patentable. “STRAIGHTENING AND CURLING DUAL-PURPOSE HAIRDRESSING DEVICE” (US-20250344824-A1). https://patentable.app/patents/US-20250344824-A1

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