HAIR STRAIGHTENER WITH WIND GATHERING FUNCTION

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Application No. PCT/CN2025/083667, filed on May 20, 2025, which claims priority to Chinese Patent Application No. 202410648973.X, filed on May 23, 2024, both of which are hereby incorporated by reference in their entireties.

TECHNICAL FIELD

The present disclosure belongs to the technical field of hair care tools, and specifically relates to a hair straightener with a wind gathering function.

BACKGROUND

Hair straighteners with a blow-drying function are currently one of mainstream hair care tools. A hair straightener with a hot air-blowing function usually includes clamping plates, air ducts and air outlets connected to the air ducts are disposed in the clamping plates, and after heating elements in the air ducts heat the airflow in the air ducts, the airflow is discharged from the air outlets and acts on the user's hair; for example, the Chinese Patent CN117958540A titled “Blow-Drying Hair Straightener” includes hair clamping plates, an air delivery chamber communicated with a motor and a heating element in a handle are disposed in the hair clamping plate, a first strip-shaped air outlet is disposed on one side of the air delivery chamber, the motor drives fan blades to rotate such that the airflow heated by the heating element forms hot air and then is blown out from the first strip-shaped air outlet, and the hot air acts on the hair between the two hair clamping plates and is then discharged from a second strip-shaped air outlet; and however, since the heating element is usually a heating wire with a temperature ranging from 90° C. to 135° C., energy loss may occur during the flow process, and therefore, the temperature of the hot air blown out is even lower and unstable, which greatly compromises the thermal care effect and the user experience.

SUMMARY

An objective of the present disclosure is to provide a hair straightener with a wind gathering function, so as to solve the problems raised in the above background art.

To achieve the above objective, the present disclosure provides the following technical solution:

A hair straightener with a wind gathering function includes an airflow generating part with a heating function. The airflow generating part is provided with two output ends communicated with a first clamping arm and a second clamping arm respectively. Both the first clamping arm and the second clamping arm are provided with heating assemblies. At least one first air outlet hole is formed on either of the first clamping arm and the second clamping arm on a same side thereof, and a second groove is formed at a position near the first air outlet hole. The first air outlet hole is formed horizontally or obliquely, such that a wind gathering area is formed at the second groove. Negative pressure is formed in the wind gathering area, and heat radiated by the heating assemblies is mixed with airflow blown from the first air outlet hole, such that waste heat from the heating assemblies is reasonably utilized to act on hair.

According to a further technical solution, air chambers independent of the heating assemblies are arranged in both the first clamping arm and the second clamping arm, the two air chambers are respectively communicated with the two output ends of the airflow generating part, at least one second air outlet hole is formed on one side of the air chamber corresponding to the same side of the first air outlet hole, and at least one arc-shaped airflow guide plate is arranged in the air chamber to divide an interior of the air chamber into at least one air duct.

According to a further technical solution, n arc-shaped airflow guide plates are arranged in either of the air chambers to divide the interior of the air chamber into n+1 air ducts, and each of the air ducts corresponds to one second air outlet hole.

According to a further technical solution, a distance M from the first air outlet hole to the heating assembly is ≤15 mm, one side of the heating assembly is located at a bottom of the second groove, and the bottom of the second groove extends horizontally.

According to a further technical solution, a convex edge is arranged in a circumferential direction of the second air outlet hole, and an embedding groove is formed in a circumferential direction of the first air outlet hole, and the convex edge is fitted with the embedding groove.

According to a further technical solution, the first air outlet hole gradually expands from inside to outside.

According to a further technical solution, end portions of the first clamping arm and the second clamping arm are combined to form a “V”-shaped first groove, the first clamping arm and the second clamping arm are combined only on one side to form the second groove, the first groove and the second groove form an “L”-shaped hair entry space, the first groove and the second groove are smoothly transitioned and communicated, the bottom of the second groove is formed by a surface of one side of the heating assembly exposed in the second groove, and a hair-styling curved surface is disposed on the other side of either of the first clamping arm and the second clamping arm opposite to the second groove.

According to a further technical solution, the airflow generating part includes a flexible three-way air duct, one end of the flexible three-way air duct forms an air inlet portion, and the other two ends thereof form air outlet portions, where the air outlet portions are symmetrically spaced apart from each other and extend reversely relative to the air inlet portion; and

• • a mounting base is fixedly disposed on an outer periphery of the air inlet portion, the heating assembly and a fan are arranged on the mounting base, and the air inlet portion, the heating assembly, and the fan are sequentially distributed and coaxially arranged.

According to a further technical solution, either of the air outlet portions is provided with a rectangular flat-shaped air outlet.

According to a further technical solution, the mounting base includes a fixing ring and an arc-shaped mounting plate, the fixing ring is matched with the entrance of the air inlet portion in shape and is fixedly disposed on an inner wall thereof, a plurality of positioning columns are disposed on an outer periphery of the fixing ring, the positioning columns are connected to the arc-shaped mounting plate, and an inner side of the arc-shaped mounting plate is fitted with an outer side of the air inlet portion.

According to a further technical solution, a flange is disposed in a circumferential direction of the fixing ring, a third groove in cooperation with the flange is formed on an inner side of the air inlet portion, the fixing ring extends from the entrance of the air inlet portion to the outside, a boss is disposed on the inner side of the arc-shaped mounting plate, and one side of the boss abuts against an edge of the fixing ring.

According to a further technical solution, a partition strip is disposed in a middle of the fixing ring, the partition strip divides an interior of the fixing ring into two first holes corresponding to the air outlet portions, and one side of the partition strip near the heating assembly is designed with an arc-shaped contour.

According to a further technical solution, in an embodiment of the present disclosure, a plurality of convex strips are disposed on an outer side of the arc-shaped mounting plate, a first snap-fit groove is formed between every two adjacent convex strips, and the first snap-fit grooves are snap-fitted with first snap-fit blocks on a first outer shell.

According to a further technical solution, the heating assembly includes a bracket, a heating wire is wound around the bracket, a fixing member is fixedly disposed thereon, a plurality of “L”-shaped second snap-fit grooves are formed on the fixing member, the second snap-fit grooves are snap-fitted with second snap-fit blocks on a second outer shell, a limiting groove snap-fitted with the bracket is formed on an inner side of the mounting base, a limiting block extends transversely from one side of the fixing member near the fan, and the limiting block may be snap-fitted into a third outer shell.

According to a further technical solution, the arc-shaped mounting plate is provided with a mounting portion configured to fix the fan, and a honeycomb-shaped noise reduction net is integrally formed on the arc-shaped mounting plate at a position near an air inlet of the fan.

The present disclosure has the following beneficial effects:

An air duct for airflow output in the present disclosure is separated from the heating assembly, such that the heat of the heating assembly is not lost during the process of airflow output to an external environment, which ensures a more stable heating temperature when the hair straightener heats and cares for the hair, and further ensures a more stable airflow temperature in a way of independently heating the airflow; and

• • the hair straightener should be provided with a controller, a plurality of shift gears are arranged in the controller and configured to control an airflow temperature of the airflow generating part, and the user may choose a corresponding gear according to his/her preferences to control the temperature of hot air blown out, which does not affect the heating assembly and achieves temperature adjustability; and alternatively, the heating assemblies may be deactivated, the user may choose to use the standalone blow-drying function, and in this case, the hair straightener still generates hot air to meet different needs of the user.

Additionally, under the action of the wind gathering area, since at least one side of the heating assembly is located at the bottom of the groove in the wind gathering area, the distance from the air outlet on the inclined surface of the groove is very small, i.e., the distance is ≤15 mm. Therefore, the heat radiated by the heating assembly is adsorbed to the air outlet to continue acting on the hair, which significantly increases the temperature, thereby achieving the effect of rapid drying by reasonably utilizing heat energy.

Further features and advantages of the present disclosure will be described in detail in the following detailed implementation mode.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a three-dimensional structure diagram of a hair straightener of the present disclosure.

FIG. 2 is a partial schematic diagram of a front view and a side view of a hair straightener of the present disclosure.

FIG. 3 is a structural diagram I of a clamping arm of the present disclosure.

FIG. 4 is a structural diagram of a box body of the present disclosure.

FIG. 5 is a schematic diagram of an arc-shaped airflow guide plate according to Embodiment 1 of the present disclosure.

FIG. 6 is a schematic diagram of an arc-shaped airflow guide plate according to Embodiment 2 of the present disclosure.

FIG. 7 is a schematic diagram of an arc-shaped airflow guide plate according to Embodiment 3 of the present disclosure.

FIG. 8 is a structural diagram II of a clamping arm of the present disclosure.

FIG. 9 is a structural diagram of an airflow generating part of the present disclosure.

FIG. 10 is an exploded view of an airflow generating part of the present disclosure.

FIG. 11 is a structural diagram of an arc-shaped mounting plate of the present disclosure.

FIG. 12 is an exploded view of a flexible three-way air duct and a fixing ring of the present disclosure.

FIG. 13 is a schematic diagram of an airflow path and a heat radiation path in a cross section when a hair straightener of the present disclosure is closed.

FIG. 14 is a schematic diagram of clamping hair on the basis of FIG. 13 of the present disclosure.

FIG. 15 is a schematic diagram of a distance between a first air outlet hole and a heating assembly in a cross section when a hair straightener of the present disclosure is closed.

Reference numerals in the figures: 11—first clamping arm, 12—second clamping arm, 13—first air outlet hole, 14—first groove, 15—second groove, 16—embedding groove, 17—housing, 18—heat insulation groove, 19—hair-styling curved surface, 2—airflow generating part, 21—flexible three-way air duct, 211—air inlet portion, 212—air outlet portion, 213—third groove, 214—second hole, 22—mounting base, 2211—fixing ring, 2212—partition strip, 2213—first hole, 2214—positioning column, 2215—flange, 2221—arc-shaped mounting plate, 2222—convex strip, 2223—first snap-fit groove, 2224—mounting portion, 2225—noise reduction net, 2226—limiting groove, 2227—boss, 23—heating assembly, 231—bracket, 232—fixing member, 233—second snap-fit groove, 234—second snap-fit block, 235—limiting block, 24—fan, 3—box body, 31—upper shell, 32—lower shell, 33—air chamber, 34—second air outlet hole, 35—arc-shaped airflow guide plate, 36—air inlet, 37—convex edge, 38—protrusion-recess structure, 41—heating assembly, 5—airflow path, 6—heat radiation path, and 7—hair.

DESCRIPTION OF EMBODIMENTS

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure.

Please refer to FIGS. 1-15;

• • a hair straightener of the present disclosure has an air outlet function, achieves an effect of quickly drying hair 7, and specifically includes an airflow generating part 2, and the airflow generating part 2 is provided with two output ends communicated with a first clamping arm 11 and a second clamping arm 12 respectively; a main body protected by the present disclosure is the hair straightener, and according to a method of the prior art for using the hair straightener, the hair 7 is usually clamped by the first clamping arm 11 and the second clamping arm 12, and the hair 7 is heated at the same time to soften and shape the hair 7; therefore, one or both of the first clamping arm 11 and the second clamping arm 12 in this embodiment have a heating function and achieve the effect of heating the hair 7; in this embodiment, a heating assembly 41 disposed in the clamping arm is not improved, so a structure in the prior art may be applied therein; additionally, an elastic member (not shown in the figures) may be further arranged between the heating assembly 41 and the clamping arm to achieve floating movement of the heating assembly 41 and prevent excessive clamping of the hair 7; in this embodiment, at least one first air outlet hole 13 is formed on either of the first clamping arm 11 and the second clamping arm 12 on a same side thereof, and it should be noted that an air duct is formed between the first air outlet hole 13 and the airflow generating part 2, external air sucked by the airflow generating part 2 is finally discharged to the outside through the first air outlet hole 13, and airflow is blown out to dry the hair 7 while performing a hair straightening operation;
  • in an embodiment of the present disclosure, with reference to FIGS. 13-15, the first air outlet hole 13 is formed horizontally or obliquely, such that a wind gathering area is formed at a second groove 15; preferably, the second groove 15 is “V”-shaped, the first air outlet hole 13 is formed on an inclined surface, and no matter which formation mode is adopted for the first air outlet hole 13, two streams of generated airflow flow relatively fast, such that the second groove 15 is in a low-pressure state; oblique formation of the first air outlet hole 13 is described below as an example;
  • when the first air outlet hole 13 outputs airflow, the two streams of airflow intersect, since the two streams of airflow flow relatively fast, an air pressure at an inner side of either of the two streams of airflow is relatively low, and in this case, air is sucked from the outside; preferably, part of the air passes through the heating assembly 41 before entering the inner sides of the two streams of airflow, that is, external air is first heated by the heating assembly 41, thereby increasing a temperature at the inner side;
  • in the first embodiment, when the airflow is not heated, the temperature of airflow blown out is room temperature, and under the action of the wind gathering area, the temperature of a mixed airflow rises, which achieves an effect of air-drying the hair 7 with hot air while saving energy; and
  • in the second embodiment, when the dry airflow is heated, hot air is generated with the airflow blown out, but the heating assembly 23 is usually heated with a heating wire, so the temperature of the airflow may usually reach 90° C.-135° C.; energy loss may occur during the flow process, so the temperature of airflow blown out is slightly lower, while an operating temperature of the heating assembly 41 reaches 140° C.-230° C.; and under the action of the wind gathering area, the external air, after being heated by the heating assembly 41, is superimposed with the two streams of airflow blown out, such that a maximum temperature of the wind gathering area reaches 180° C., which greatly increases the temperature and thus achieves an effect of rapid drying.

Notably, when a thickness of the hair 7 clamped by the first clamping arm 11 and the second clamping arm 12 is uniform and a pressure applied to the hair 7 is relatively large, very little or even no external air passes through the heating assembly 41, and however, an interior of the heating assembly 41 is heated usually based on a positive temperature coefficient (PTC) or a metal ceramic heater (MCH) for conductive heat transfer, and a heat source operates in a radiative manner; since a side of the heating assembly 41 is exposed at a bottom of the second groove 15 and extends parallelly along the bottom thereof, the first air outlet hole 13 is formed on the inclined surface, and a distance M from the first air outlet hole 13 to the side of the heating assembly 41 located at the bottom of the second groove 15 is ≤15 mm; and setting of the distance M ensures that the heat source radiated from the side of the heating assembly 41 is absorbed to the vicinity of the first air outlet hole 13 to continue acting on the hair, thereby making full use of heat that is otherwise lost.

No matter which of the above embodiments is adopted, during the process of entering the wind gathering area, external air is attracted by the two streams of airflow and moves toward the two streams of airflow, such that the hair 7 originally stacked floats in a direction of the airflow, and the hair 7 originally stacked is separated and straightened in the direction of the airflow; and preferably, when the airflow is ejected obliquely, the airflow eventually converges at an intersection point and then flows in a vertical direction of the hair 7, that is, the direction of the airflow is the same as the vertical direction of the hair 7, which further improves the hair straightening effect.

Preferably, a distance between an outermost end of the heating assembly 41 and the first air outlet hole 13 is ≤15 mm, when a thickness of the hair 7 clamped by the first clamping arm 11 and the second clamping arm 12 is uniform and a pressure applied to the hair 7 is relatively large, very little or even no external air passes through the heating assembly 41, and however, an interior of the heating assembly 41 is heated usually based on a positive temperature coefficient (PTC) or a metal ceramic heater (MCH) for conductive heat transfer, and a heat source operates in a radiative manner; the bottom of the second groove 15 is formed by a surface of one side of the heating assembly 41 exposed in the second groove 15, the surface forming the bottom of the second groove extends longitudinally and linearly, the first air outlet hole 13 is formed on the inclined surface of the second groove 15, and a distance M from the first air outlet hole 13 to the side of the heating assembly 41 located at the bottom of the second groove 15 is ≤15 mm; and setting of the distance M ensures that the heat source radiated from the side of the heating assembly 41 is absorbed to the vicinity of the first air outlet hole 13 to continue acting on the hair, thereby making full use of heat that is otherwise lost.

In an embodiment of the present disclosure, with reference to FIG. 3, the first clamping arm 11 and the second clamping arm 12 are structurally identical, the second clamping arm 12 includes a housing 17, a heat insulation groove 18 is formed in the housing 17 at a position corresponding to the first air outlet hole 13, and formation of the heat insulation groove 18 may reduce the heat transfer to the housing 17 and an outer shell of the clamping arm, and reduce the temperature of outer surfaces of the first clamping arm 11 and the second clamping arm 12 to prevent scalding or discomfort caused by excessively high temperature.

When an unfolding rotation angle of the first clamping arm 11 and the second clamping arm 12 is not large enough, the problem of difficulty in hair entry may occur, and therefore, in the present disclosure, end portions of the first clamping arm 11 and the second clamping arm 12 are combined to form a “V”-shaped first groove 14; when the user uses the hair straightener, the hair 7 enters from an end surface of the clamping arm, and the “V”-shaped first groove 14 may play a guiding role and guide the hair 7 to a middle position between the first clamping arm 11 and the second clamping arm 12; however, when the hair 7 enters a hair straightening area between the first clamping arm 11 and the second clamping arm 12, edge positions of the first clamping arm 11 and the second clamping arm 12 may block the hair 7, such that the hair 7 is stacked and entangled when entering the hair straightening area; therefore, in this embodiment, the second groove 15 is further formed by combining the first clamping arm 11 and the second clamping arm 12 on at least the same side, and formation of the second groove 15 causes formation of a clearance space between side edges of the first clamping arm 11 and the second clamping arm 12, which does not block the entry of the hair 7; and in the present disclosure, an “L”-shaped hair entry space is formed through smooth transition and communication between the first groove 14 and the second groove 15, such that the hair 7 enters the hair straightener more smoothly, thereby enhancing the user experience.

It should be noted that the first groove 14 and the second groove 15 are communicated with each other, i.e., smoothly transitioned, and during use, the hair 7 enters the hair straightening area toward the first groove 14, and also enters the hair straightening area toward a bend where the first groove 14 and the second groove 15 are smoothly communicated with each other.

Furthermore, in an alternative embodiment, the user may directly put the hair 7 into the hair straightening area from one side of the second groove 15 and then take same out from the other side of the second groove 15, which offers more choices for the user.

Additionally, the second groove 15 is only disposed on one side of either of the first clamping arm 11 and the second clamping arm 12, a hair-styling curved surface 19 is disposed on the other side of either of the first clamping arm 11 and the second clamping arm 12, the present disclosure is a hair care and styling tool that further has a curling function in addition to the hair straightening function, and after the hair 7 is clamped by the first clamping arm 11 and the second clamping arm 12, the hair straightener is turned over, and the hair bends along the hair-styling curved surface 19, thereby achieving the purpose of curling.

Further, the first groove 14 and the second groove 15 are communicated with each other, i.e., smoothly transitioned, and during use, the hair 7 enters the hair straightening area toward the first groove 14, and also enters the hair straightening area toward a bend where the first groove 14 and the second groove 15 are smoothly communicated with each other.

Preferably, the edge positions of the first clamping arm 11 and the second clamping arm 12 are designed to have an inclined arc surface b, the arc-shaped positions designed specifically refer to positions corresponding to the hair straightening area, and since the hair straightener usually is not linearly aligned with the hair 7 during the hair straightening operation, the hair 7 abuts against the edge position of the first clamping arm 11 or the second clamping arm 12; and when the edge positions are linearly arranged, an area of contact with the hair 7 is very small, and relative movement therebetween damages the hair 7, such that the arc-shaped surface design not only increases the contact area, but also reduces a resistance during relative movement, thereby ensuring smoother movement.

Regarding a specific structure of an air chamber 33, reference may be made to the relevant description in the Chinese Patent CN117958540A titled “Blow-Drying Hair Straightener”, where the airflow passes through the heating assembly 41 and then is blown from the air outlet hole; in this embodiment, the air chamber 33 and the heating assembly 41 are independent of each other, and for example, an independent box body 3 is arranged in either of the clamping arms to form the independent air chamber 33; with reference to FIG. 4, the box body 3 is provided with a second air outlet hole 34 connected to first air outlet hole 13, which prevents noise and unsmooth air output caused by air leakage; and additionally, the airflow generating part 2 has a heating function, i.e., the airflow generating part is independent of the heating assemblies 41 in the first clamping arm 11 and the second clamping arm 12, and the airflow may increase the temperature without passing through the heating assembly 41 to dry the hair 7;

• • moreover, an air duct for airflow output in the present disclosure is separated from the heating assembly 41, such that the heat of the heating assembly 41 is not lost during the process of airflow output to an external environment, which ensures a more stable heating temperature when the hair straightener heats and cares for the hair 7, and further ensures a more stable airflow temperature in a way of independently heating the airflow; and
  • further, the hair straightener should be provided with a controller, a plurality of shift gears are arranged in the controller and configured to control an airflow temperature of the airflow generating part 2, and the user may choose a corresponding gear according to his/her preferences to control the temperature of hot air blown out, which does not affect the heating assembly 41 and achieves temperature adjustability; and alternatively, the heating assemblies 41 may be deactivated, the user may choose to use the standalone blow-drying function, and in this case, the hair straightener still generates hot air to meet different needs of the user.

Preferably, the box body 3 includes an upper shell 31 and a lower shell 32, and edges of the upper shell 31 and the lower shell 32 are provided with protrusion-recess structures 38 for interfitting connection, which effectively achieves a sealing effect; and notably, a sealing gasket or the like may be arranged for positionally matching to enhance the sealing performance.

In actual production, a position of the first air outlet hole 13 is adjusted, the box body 3 is fixedly installed in the housing, and to connect the first air outlet hole 13 with the second air outlet hole 34, in this embodiment, the second air outlet hole 34 disposed on one side of the box body 3 is moved down to align vertically with the first air outlet hole 13 to achieve installation, and an inclined arc surface a for transitioning is disposed at a position of a bottom surface of the lower shell 32 near the second air outlet hole 34 to ensure smooth airflow, with reference to FIGS. 13-15; and additionally, inclined arc surface a is disposed at the position of the bottom surface of the lower shell 32 near the second air outlet hole 34, which is matched with the shape of the heating assembly 41 with a high middle and low sides, such that the space layout is compact and reasonable, which helps to reduce an overall size of the hair straightener.

In an embodiment of the present disclosure, a length of the box body 3 is equal to or greater than three times a width thereof, a height thereof is equal to or less than half of the width, and a thickness of the heating assembly 41 is approximately equal to a thickness of the box body 3, which reduces an overall volume of the clamping arms, and ensures an area of a heating area of the heating assembly 41; since a heat-conducting profile on an outer surface of the heating assembly 41 is usually processed by means of aluminum extrusion punching, the heating assembly 41 has an overall rectangular thin-sheet cuboid structure, the box body 3 is also shaped like a rectangular thin-sheet cuboid for overall matching, and the heating assembly 41 and the box body 3 are stacked vertically, such that the rectangular thin-sheet cuboid shape thereof may reduce an overall thickness of the clamping arms, and ensure the area of the heating area of the heating assembly 41; and when the thickness of the clamping arm is too large, the hair straightener looks bulky overall, thus affecting the appearance on the one hand, and the curling function of the hair straightener is compromised on the other hand.

At least one arc-shaped airflow guide plate 35 is arranged in the air chamber 33 to divide an interior of the air chamber 33 into at least one air duct; in the present disclosure, the air chamber 33 is designed to be rectangular to match the heating assembly 41, when airflow is output, an entire space of the air chamber 33 needs to be fully filled, and in this case, the airflow encounters a significant resistance, which not only causes unsmooth air output, but also causes relatively large noise; and therefore, the arc-shaped airflow guide plate 35 is arranged to achieve smooth angle change of airflow, which reduces resistance, and solves the problems of noise and unsmooth air output.

There are three embodiments based on the arc-shaped airflow guide plate 35:

Embodiment 1: With reference to FIG. 5, when only one arc-shaped airflow guide plate 35 is arranged, only one corresponding second air outlet hole 34 is formed, and an air duct is formed between the arc-shaped airflow guide plate and one side wall of the air chamber 33, where an entrance of the air duct fully covers an entrance of the air chamber 33;

Embodiment 2: With reference to FIG. 6, when only one arc-shaped airflow guide plate 35 is arranged, two corresponding second air outlet holes 34 are formed, and an end of the arc-shaped airflow guide plate 35 is disposed in a middle of the air chamber 33, such that two air ducts are formed between both sides of the arc-shaped airflow guide plate 35 and both sides of the air chamber 33, and the two air ducts correspond to the two second air outlet holes 34 respectively; and

Embodiment 3: With reference to FIG. 7, n arc-shaped airflow guide plates 35 are arranged in either of the air chambers 33 to divide the interior of the air chamber 33 into n+1 air ducts, and an end portion of each of the airflow guide plates corresponds to the entrance of the air chamber 33; for example, when three arc-shaped airflow guide plates 35 are arranged, two air ducts are formed between the three arc-shaped airflow guide plates 35, and the first arc-shaped airflow guide plate 35 and the third arc-shaped airflow guide plate 35, together with the two sides of the air chamber 33, form air ducts respectively, that is, a total of four air ducts are formed, and each of the air ducts corresponds to one second air outlet hole 34.

Further, with reference to FIG. 4, a convex edge 37 is arranged in a circumferential direction of the second air outlet hole 34, and an embedding groove 16 is formed in a circumferential direction of the first air outlet hole 13, where the convex edge 37 is fitted with the embedding groove 16 to prevent air leakage.

Additionally, the first air outlet hole 13 gradually expands from inside to outside, and transition of high-speed airflow from a narrow opening to a wide opening causes the airflow to be dispersed, which covers a wider range.

A structure of the airflow generating part 2 is described below with reference to FIGS. 8-12; and

• • the airflow generating part 2 specifically includes a flexible three-way air duct 21, the flexible three-way air duct 21 in this embodiment is integrally formed from a flexible material, one end of the flexible three-way air duct 21 forms an air inlet portion 211, and the other two ends thereof form air outlet portions 212, where the air outlet portions 212 are symmetrically spaced apart from each other and extend reversely relative to the air inlet portion 211; the two air outlet portions 212 are respectively connected to the air chambers 33 of the two clamping arms; a mounting base 22 is fixedly disposed on an outer periphery of the air inlet portion 211, and the heating assembly 23 and a fan 24 are arranged on the mounting base 22, where relative positions of the air inlet portion 211, the heating assembly 23, and the fan 24 are fixed by the limitation of the mounting base 22; and preferably, either of the air outlet portions 212 is provided with a rectangular flat-shaped air outlet, the rectangular flat-shaped air outlet helps to reduce the thickness of the clamping arm, and a smaller thickness of the clamping arm helps the clamping arms to flip or perform hair-curling and styling actions while clamping the hair 7.

During operation, the fan 24 sucks in external airflow and conveys the external airflow to the heating assembly 23, the heating assembly 23 heats the airflow to increase the temperature of the airflow, and then the heated airflow is input from the air inlet portion 211 of the flexible three-way air duct 21, divided into two streams of airflow, and output from the two air outlet portions 212 respectively; and in this embodiment, the air inlet portion 211, the heating assembly 23, and the fan 24 are sequentially distributed and coaxially arranged, which may minimize the resistance to the airflow, achieve more direct access to the flexible three-way air duct 21, and reduce the generation of noise.

In the present disclosure, the independent heating assembly 23 is arranged between the flexible three-way air duct 21 and the fan 24 to independently heat the airflow without impact by other factors, such that the hair straightener is used in a more diverse manner; and additionally, a standard installation module is formed by the mounting base 22, the flexible three-way air duct 21, the heating assembly 23, and the fan 24, thereby achieving more convenient assembly and application.

In an embodiment of the present disclosure, the mounting base 22 specifically includes a fixing ring 2211 and an arc-shaped mounting plate 2221, the fixing ring 2211 is matched with the entrance of the air inlet portion 211 in shape and is fixedly disposed on an inner wall thereof, and arrangement of the fixing ring 2211 may fix the shape of the entrance of the air inlet portion 211 without impact by opening and closing of the hair straightener, such that a maximum air intake is maintained; a plurality of positioning columns 2214 are disposed on an outer periphery of the fixing ring 2211, and the positioning columns 2214 are connected to the arc-shaped mounting plate 2221; notably, second holes 214 corresponding to the positioning columns 2214 are formed on the flexible three-way air duct 21 for the positioning columns to protrude therethrough, and the positioning columns 2214 and the second holes 214 cooperate to play a positioning role; preferably, when only one arc-shaped mounting plate 2221 is arranged, two positioning columns 2214 are arranged and protrude on one side near one of the air outlet portions 212, and when two arc-shaped mounting plates 2221 are arranged, the two arc-shaped mounting plates 2221 may enclose the heating assembly 23 and the fan 24; additionally, four positioning columns 2214 are arranged and protrude on two sides corresponding to the two air outlet portions 212 respectively; and an inner side of the arc-shaped mounting plate 2221 is fitted with an outer side of the air inlet portion 211, and the arc-shaped mounting plate 2221 is in a linearly extending shape, which, together with the fixing ring 2211, clamps an outer wall of the air inlet portion 211, such that the arc-shaped mounting portion 2224 is always linearly aligned with the entrance of the air inlet portion 211, which facilitates coaxial arrangement of the air inlet portion 211, the heating assembly 23, and the fan 24.

Further, a flange 2215 is disposed in a circumferential direction of the fixing ring 2211, a third groove 213 in cooperation with the flange 2215 is formed on an inner side of the air inlet portion 211, a size of an inner cavity of the air inlet portion 211 should be slightly smaller than an outer diameter of the fixing ring 2211, and during installation, the fixing ring 2211 is inserted into the air inlet portion 211 from the entrance thereof by means of interference fit, and then the flange 2215 of the fixing ring 2211 is snap-fitted with the third groove 213, such that the fixing ring 2211 is firmly fixed to the air inlet portion 211 to prevent falling off.

Further, the fixing ring 2211 extends from the entrance of the air inlet portion 211 to the outside, a boss 2227 is arranged on the inner side of the arc-shaped mounting plate 2221, and one side of the boss 2227 abuts against an edge of the fixing ring 2211.

According to a further description of the fixing ring 2211 of the present disclosure, a partition strip 2212 is disposed in a middle of the fixing ring 2211, and the partition strip 2212 divides an interior of the fixing ring 2211 into two first holes 2213, the two first holes 2213 correspond to air ducts of the two air outlet portions 212 respectively; before entering the air outlet portions 212, the airflow is first divided into two streams of airflow by the partition strip 2212, and the two streams of airflow directly enter the air ducts corresponding to the two air outlet portions 212, which reduces the generation of vortices in the air inlet portion 211 and improves the air output efficiency; and preferably, one side of the partition strip 2212 near the heating assembly 23 is designed with an arc-shaped contour, such that the resistance is reduced when the airflow is divided, thereby ensuring smoother airflow.

In an embodiment of the present disclosure, a plurality of convex strips 2222 are disposed on an outer side of the arc-shaped mounting plate 2221, a first snap-fit groove 2223 is formed between every two adjacent convex strips 2222, and the first snap-fit grooves 2223 are snap-fitted with first snap-fit blocks on a first outer shell (not shown in the figure), thereby facilitating positioning during installation.

In an embodiment of the present disclosure, the heating assembly 23 specifically includes a bracket 231, the bracket 231 in this embodiment is composed of a plurality of high-temperature-resistant and heat-insulating mica sheets, and the plurality of mica sheets are connected on one side and then spaced apart from each other in an annular array; a heating wire (not shown in the figure) is wound around the bracket 231, a fixing member 232 is fixedly disposed thereon, and a plurality of fixing grooves (not shown in the figure) are formed on the bracket 231 and configured to fix the heating wire during winding; after winding of the heating wire is completed, a size of an enclosed space is smaller than an outer diameter of the bracket 231, that is, even when the bracket 231 comes into contact with the arc-shaped mounting plate 2221, the heating wire does not come into contact with the arc-shaped mounting plate 2221, thereby preventing damage thereto; and therefore, when the heating assembly 23 is installed, the bracket 231 is installed such that an outer periphery of the bracket 231 abuts against the inner side of the arc-shaped mounting plate 2221, thereby limiting positions of the bracket 231 and the arc-shaped mounting plate 2221; and

• • a plurality of “L”-shaped second snap-fit grooves 233 are formed on the fixing member 232, the second snap-fit grooves 233 are snap-fitted with second snap-fit blocks 234 on a second outer shell, and a limiting groove 2226 snap-fitted with the bracket 231 is formed on an inner side of the mounting base 22; and during installation, a position of the bracket 231 is limited by the limiting groove 2226, and to mount the fixing member 232 on the hair straightener, the bracket 231 is fixed by the second snap-fit blocks 234 and the second snap-fit grooves 233 in the second outer shell to complete the installation.

Further, when two fixing members 232 are arranged and symmetrically installed on both sides of the bracket 231 respectively, corresponding holes (not shown in the figure) are formed on the arc-shaped mounting plate 2221, and one of the fixing members 232 penetrates the second outer shell for connection.

Further, a limiting block 235 extends transversely from one side of the fixing member 232 near the fan 24, and the limiting block 235 may be snap-fitted into a third outer shell; and

• • it should be noted that the first outer shell, the second outer shell, and the third outer shell may be integrally formed or separate components, but they are all parts of the hair straightener, which are not limited herein.

In the present disclosure, the arc-shaped mounting plate 2221 is provided with a mounting portion 2224 configured to fix the fan 24, and a honeycomb-shaped noise reduction net 2225 is integrally formed on the arc-shaped mounting plate 2221 at a position near an air inlet 36 of the fan 24.

As shown in FIGS. 13-15, the hair-styling curved surface 19 is formed on the other side of an outer surface of the clamping arm opposite to the second groove 15, which facilitates close-to-face hair curling and styling.

For those skilled in the art, it is apparent that the present disclosure is not limited to the details of the above-mentioned exemplary examples, and the present disclosure may be implemented in other specific forms without departing from the spirit or basic features of the present disclosure. Therefore, the embodiments should be regarded as illustrative and non-restrictive no matter from which point of view. The scope of the present disclosure is defined by the appended claims rather than the above specification, and therefore, it is intended that all changes which fall within the meaning and scope of equivalency of the claims are embraced in the present disclosure. Any reference numeral in the claims should not be construed as limiting the related claims.

In addition, it should be understood that although the present description is described according to the embodiments, not each embodiment only contains an independent technical solution, and the specification manner of the description is only for clarity. Those skilled in the art should take the description as a whole, and the technical solutions in the examples can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.