HAIR STRAIGHTENERS

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a Continuation of International Patent Application No. PCT/CN2024/075532, filed on February 2, 2024, which claims priority to Chinese Patent Application No. 202410142404.8, filed on January 31, 2024, the entire contents of each of which are incorporated herein by reference.

TECHNICAL FIELD

[0002] The present disclosure relates to the field of hair care devices, in particular, to a hair straightener.

BACKGROUND

[0003] Hair straighteners, as household appliances used for hair care, are widely used in people’s daily lives. Conventional hair straighteners, also referred to as electric flat irons or simply flat irons, operate by electrically heating a metal-ceramic heater (MCH), a positive temperature coefficient (PTC) heating element, or a heating wire within the straightener. The heat is then conducted to aluminum plates or ceramic plates, which are used to clamp the hair, altering its physical properties to achieve straightening.

[0004] However, the general principle of conventional hair straighteners relies on heating the plates via a heating device. As a result, the conventional traditional straighteners often lead to dry and damaged hair due to excessive temperatures. The high-temperature plates directly contacting the hair can roughen the hair surface, cause moisture loss, and result in brittle, yellowish hair, ultimately harming the user’s hair quality and reducing usability.

[0005] Therefore, it is desirable to provide a hair straightener.

SUMMARY

[0006] One or more embodiments of the present disclosure provide a hair straightener that includes a main body. The main body is provided with a main clamping member and an auxiliary clamping member capable of being clamped to each other. When the main clamping member and the auxiliary clamping member are clamped to each other, the main clamping member and the auxiliary clamping member are pressed against each other to clamp hair. The main clamping member includes a first edge and a second edge, and the auxiliary clamping member includes a third edge and a fourth edge. At least one airflow discharge port is disposed between the first edge and the second edge, or between the third edge and the fourth edge, and airflow generated inside the main body flows out through the at least one airflow discharge port.

[0007] In some embodiments, the airflow flowing out from the at least one airflow discharge port travels along an extending direction of the clamped hair.

[0008] In some embodiments, the at least one airflow discharge port is located on a side of the main clamping member facing the auxiliary clamping member, or on a side of the auxiliary clamping member facing the main clamping member.

[0009] In some embodiments, the main clamping member is provided with a first clamping block. The auxiliary clamping member is provided with a second clamping block arranged corresponding to the first clamping block. When the main clamping member and the auxiliary clamping member are clamped together, the first clamping block and the second clamping block are pressed against each other to clamp the hair. The at least one airflow discharge port is disposed on a side of the first clamping block.

[0010] In some embodiments, the first clamping block is disposed on an inner side surface of the main clamping member, and the second clamping block is disposed on an inner side surface of the auxiliary clamping member.

[0011] In some embodiments, when the first clamping block and the second clamping block are pressed against each other, at least one air-guiding gap for airflow to pass through is formed between the inner side surface of the main clamping member and the inner side surface of the auxiliary clamping member, and the at least one air-guiding gap is arranged on a front side of the at least one airflow discharge port.

[0012] In some embodiments, a first air outlet lip is connected to a side of the main clamping member, and a second air outlet lip is connected to a side of the auxiliary clamping member. When the first clamping block and the second clamping block are pressed against each other, the first air outlet lip and the second air outlet lip together define an air guide outlet.

[0013] In some embodiments, the hair straightener further comprises an airflow generating device. The airflow generating device includes an air outlet housing and an air guide sleeve body, and an inner cavity of the air outlet housing is in fluid communication with an inner cavity of the air guide sleeve body. An air generating assembly is disposed inside the air guide sleeve body, the air generating assembly is capable of generating the airflow and conveying the airflow into the air outlet housing, a heating assembly capable of heating air is disposed inside the air outlet housing, and an air outlet window is disposed on the air outlet housing.

[0014] In some embodiments, the first clamping block is connected to the air outlet housing and covers the air outlet window, the first clamping block is provided with a hollowed window, and an edge of the hollowed window and the air outlet housing together define the at least one airflow discharge port.

[0015] In some embodiments, the air guide sleeve body includes a guiding section that gradually narrows in a direction from an air inlet end of the air guide sleeve body to an air outlet end of the air guide sleeve body.

[0016] In some embodiments, the guiding section gradually changes from a circular shape to a flattened shape in the direction from the air inlet end to the air outlet end. .

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present disclosure is further described in terms of exemplary embodiments. These exemplary embodiments are described in detail with reference to the drawings. These embodiments are non-limiting exemplary embodiments, where like reference numerals represent similar structures throughout the several views of the drawings, and wherein:

[0018]FIG. 1 is a schematic structural diagram of a hair straightener according to some embodiments of the present disclosure;

[0019]FIG. 2 is a cross-sectional schematic diagram of a hair straightener according to some embodiments of the present disclosure;

[0020]FIG. 3 is a schematic structural diagram of a partial structure of a hair straightener according to some embodiments of the present disclosure;

[0021]FIG. 4 is a cross-sectional schematic diagram of a hair straightener in a clamped state according to some embodiments of the present disclosure;

[0022]FIG. 5 is an exploded schematic diagram of an airflow generating device and a first clamping block according to some embodiments of the present disclosure;

[0023]FIG. 6 is an exploded schematic diagram of an air outlet housing and a first clamping block according to some embodiments of the present disclosure; and

[0024]FIG. 7 is an exploded schematic diagram of a partial structure of a dual-heating-mode auxiliary clamping member according to some embodiments of the present disclosure.

DETAILED DESCRIPTION

[0025] To more clearly illustrate the technical solutions of the embodiments in the present disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description merely represent some examples or embodiments of the present disclosure.

[0026]Those of ordinary skill in the art may apply the present disclosure to other similar scenarios based on these drawings without creative effort. Unless otherwise apparent from the context or explicitly stated, the same reference numerals in the drawings denote the same structures or operations.

[0027] The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms “a,” “an,” and “the” may be intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprise,” “comprises,” and/or “comprising,” “include,” “includes,” and/or “including” when used in this disclosure, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

[0028] It may be understood that the terms “system,” “engine,” “unit,” “module,” and/or “block” used herein are one method to distinguish different components, elements, parts, sections, or assemblies of different levels in ascending order. However, the terms may be displaced by another expression if they achieve the same purpose. The term “and/or”, as used herein, is merely a way of describing the associative relationship of an associated object, indicating that three relationships can exist, e.g., A and/or B, which may be represented as: A alone, both A and B, and B alone.

[0029] The present disclosure will be further described below with reference to the accompanying drawings.

[0030]FIG. 1 is a schematic structural diagram of a hair straightener according to some embodiments of the present disclosure.

[0031] In some embodiments, referring to FIG. 1, the hair straightener may include a main body A. The main body A refers to a core foundational component of the hair straightener, serving as a primary structure that carries and connects various functional modules to enable overall operational control. In some embodiments, the main body A may be provided with two clamping members, such as a main clamping member 1 and an auxiliary clamping member 2. The main clamping member 1 and the auxiliary clamping member 2 may be rotatably connected, allowing them to be clamped to each other for holding hair B. The main clamping member 1 and the auxiliary clamping member 2 are interchangeable and not hierarchically distinguished. In some embodiments, by placing the hair B between the main clamping member 1 and the auxiliary clamping member 2, the hair can be securely clamped, and straightening can be achieved through a user's pulling action.

[0032]FIG. 2 is a cross-sectional schematic diagram of a hair straightener according to some embodiments of the present disclosure.

[0033] In some embodiments, as shown in FIGS. 1 and 2, the hair straightener includes a main body A. The main body A is provided with a main clamping member 1 and an auxiliary clamping member 2 capable of being clamped to each other. When the main clamping member 1 and the auxiliary clamping member 2 are clamped together, they are pressed against each other to clamp hair B. In some embodiments, the main clamping member 1 includes a first edge 101 (see FIG. 4) and a second edge 102 (see FIG. 4); the auxiliary clamping member 2 includes a third edge 201 (see FIG. 4) and a fourth edge 202 (see FIG. 4). A distance between the first edge 101 and the second edge 102 may be considered as a width of the main clamping member 1, and a distance between the third edge 201 and the fourth edge 202 may be considered as a width of the auxiliary clamping member 2. The width of the main clamping member 1 and the width of the auxiliary clamping member 2 may be the same or different.

[0034] In some embodiments, the first edge 101 and the second edge 102 are substantially perpendicular to an extending direction of the clamped hair B, and the third edge 201 and the fourth edge 202 are substantially perpendicular to the extending direction of the clamped hair B.

[0035] In some embodiments, at least one airflow discharge port 12 is provided between the first edge 101 and the second edge 102, or between the third edge 201 and the fourth edge 202. Airflow generated inside the main body A (e.g., air at ambient temperature, or air that has been heated/cooled) flows out through the at least one airflow discharge port 12.

[0036] In some embodiments, the airflow flowing from the at least one airflow discharge port 12 travels along the extending direction of the clamped hair B.

[0037] The airflow flows out from the airflow discharge port(s) 12 located between the first edge 101 and the second edge 102, or from the airflow discharge port(s) 12 located between the third edge 201 and the fourth edge 202. The airflow from the airflow outlet(s) 12 flows substantially along the extending direction of the clamped hair B, i.e., the airflow is blown along a direction of hair growth, allowing the hair B to be blown over a wide area and uniformly. This helps straighten the hair B through the airflow, achieving a straightening effect while avoiding dehydration and dryness of the hair B caused by localized, close-range heating.

[0038] In some embodiments, the at least one airflow discharge port 12 is located on a side of the main clamping member 1 facing the auxiliary clamping member 2, or on a side of the auxiliary clamping member 2 facing the main clamping member 1, so that the airflow discharge port 12 is positioned closer to the hair B. When the airflow exits the airflow discharge port 12, it can directly blow onto the hair B.

[0039] In some embodiments, the main clamping member 1 is provided with a first clamping block 11, and the auxiliary clamping member 2 is provided with a second clamping block 21 arranged corresponding to the first clamping block 11. When the main clamping member 1 and the auxiliary clamping member 2 are clamped together, the first clamping block 11 and the second clamping block 21 are pressed against each other to clamp the hair B. The at least one airflow discharge port 12 is disposed on a side of the first clamping block 11.

[0040] In some embodiments, the main body A is provided with an airflow generating device 13 capable of generating airflow and causing the airflow to exit through the at least one airflow outlet 12. It may be understood that the airflow generating device 13 may produce airflow at ambient temperature or airflow that has been heated/cooled.

[0041] In some embodiments, the count of airflow discharge ports 12 may be set to one or more. The one or more airflow discharge ports 12 may be disposed on the front side of the first clamping block 11. The front side of the first clamping block 11 may be considered as the side indicated by the arrow in FIG. 1 that shows the direction of airflow movement. This allows the airflow exiting the airflow discharge ports 12 to flow along the direction of hair B growth, i.e., the airflow from the airflow discharge ports 12 flows toward the ends of hair B.

[0042] The airflow is generated by the airflow generating device and is ultimately blown out from one side of the first clamping block, following the direction of hair growth, which can straighten the hair. Heated airflow can provide a wide and uniform distribution of heat to the hair, further assisting in straightening the hair, thereby achieving a hair-straightening effect while avoiding localized, close-range heating that could cause dehydration and dryness of the hair.

[0043] It may be understood that airflow discharge port(s) 12 may also be respectively provided on two sides of the first clamping block 11. The airflow may be blown out from two sides of the first clamping block 11, i.e., along the extending direction of the hair B, to achieve the straightening effect.

[0044]FIG. 3 is a schematic structural diagram of a partial structure of a hair straightener according to some embodiments of the present disclosure. FIG. 4 is a cross-sectional schematic diagram of a hair straightener in a clamped state according to some embodiments of the present disclosure.

[0045] In some embodiments, as shown in FIGS. 1 and 3, the first clamping block 11 is disposed on an inner side surface 100 of the main clamping member 1, while the second clamping block 21 is disposed on an inner side surface 200 of the auxiliary clamping member 2. The inner side surface 100 of the main clamping member 1 refers to a surface of the main clamping member 1 facing the auxiliary clamping member 2, and the inner side surface 200 of the auxiliary clamping member 2 refers to a surface of the auxiliary clamping member 2 facing the main clamping member 1.

[0046] In some embodiments, as shown in FIG. 4, when the first clamping block 11 and the second clamping block 21 are pressed against each other, at least one air-guiding gap 3 is formed between the inner side surface 100 of the main clamping member 1 and the inner side surface 200 of the auxiliary clamping member 2 to allow airflow to pass through. The at least one air-guiding gap 3 is arranged on a front side of at least one airflow discharge port 12, enabling the airflow blown out from the airflow discharge port 12 to flow outward along the air-guiding gap 3. The front side of the airflow discharge port 12 is determined based on a flow direction of the airflow, e.g., the side in the forward flow direction of the airflow is considered as the front side.

[0047] In some embodiments, the at least one air-guiding gap 3 may be arranged in coordination with the at least one airflow discharge port 12. In other words, one or more air-guiding gaps 3 are arranged on the front side of each of the at least one airflow discharge port 12. Each of the at least one air-guiding gap 3 may correspond to one of the at least one airflow discharge port 12, or a plurality of airflow discharge ports 12 may correspond to a single air-guiding gap 3.

[0048]In some embodiments, the hair straightener further includes a negative ion generator 14, which is a device that generates negative ions (negatively charged oxygen ions or other negative ions) through physical or chemical manners. In some embodiments, as shown in FIGS. 2 and 3, the negative ion generator 14 is disposed on the auxiliary clamping member 2 and connected to a negative ion output tube 15. An output end of the negative ion output tube 15 may extend through the auxiliary clamping member 2 and be exposed on the inner side surface 200 of the auxiliary clamping member 2. In some embodiments, the negative ion generator 14 is disposed on the main clamping member 1 and connected to a negative ion output tube 15. The output end of the tube may extend through the main clamping member 1 and be exposed on the inner side surface 100 of the main clamping member 1. In some embodiments, each of the main clamping member 1 and the auxiliary clamping member 2 may be provided with a negative ion generator 14. Each negative ion generator 14 is connected to a negative ion output tube 15, the output end of the negative ion output tube 15 penetrates through the main clamping member 1 and/or the auxiliary clamp member 2 to be exposed on the inner side surface(s) of the main clamp member 1 and/or the auxiliary clamp member 2. In some embodiments, the negative ion output tube 15 may be positioned at the air-guiding gap 3, allowing the airflow flowing outward through the air-guiding gap 3 to carry the negative ions generated by the negative ion generator 14 for effective delivery.

[0049] In some embodiments, the negative ion generator 14 may be configured as any feasible negative ion generator structure.

[0050] In some embodiments, providing the negative ion generator on the auxiliary clamping member and/or the main clamping member can help reduce hair split ends and maintain smooth, lustrous hair quality for the user.

[0051] In some embodiments, as shown in FIGS. 3 and 4, a first air outlet lip 4 is connected to a side of the main clamping member 1, a second air outlet lip 5 is connected to a side of the auxiliary clamping member 2. When the first clamping block 11 and the second clamping block 21 are pressed against each other, the first air outlet lip 4 and the second air outlet lip 5 together define an air guide outlet 6, allowing the air flowing outward through the at least one air-guiding gap 3 to ultimately exit through the air guide outlet 6. The connection between the first air outlet lip 4 and the main clamping member 1 and the connection between the second air outlet lip 5 and the auxiliary clamping member 2 may include a threaded connection, an adhesive bonding, a snap-fit connection, or the like.

[0052] In some embodiments, the first air outlet lip 4 may be disposed on a front side of the main clamping member 1, and the second air outlet lip 5 may be disposed on a front side of the auxiliary clamping member 2. The front side of the main clamping member 1 and the front side of the auxiliary clamping member 2 are determined based on the flow direction of the airflow, e.g., the side in the forward flow direction of the airflow is considered as the front side.

[0053] By providing the air-guiding gap and the air guide outlet, the flow direction of the airflow can be effectively guided. The arrangement of the negative ion output tube at the air-guiding gap ensures the discharged airflow is rich in negative ions, which helps reduce hair split ends and maintains smooth, shiny hair quality for the user.

[0054] In some embodiments, each of the first clamping block 11 and the second clamping block 21 may be an integrated structure made of metal or a ceramic material. Understandably, the first clamping block 11 and the second clamping block 21 may alternatively be made of other feasible materials such as quartz.

[0055]FIG. 5 is an exploded schematic diagram of an airflow generating device and a first clamping block according to some embodiments of the present disclosure. FIG. 6 is an exploded schematic diagram of an air outlet housing and a first clamping block according to some embodiments of the present disclosure.

[0056] In some embodiments, as shown in FIGS. 2, 4, 5 and 6, the airflow generating device 13 includes an air outlet housing 131 and an air guide sleeve body 132. An inner cavity of the air outlet housing 131 is in fluid communication with an inner cavity of the air guide sleeve body 132. An air generating assembly 133 is disposed inside the air guide sleeve body 132. The air generating assembly 133 is capable of generating airflow and conveying the airflow into the air outlet housing 131. A heating assembly 134 capable of heating air is disposed inside the air outlet housing 131, and an air outlet window 135 is disposed on the air outlet housing 131.

[0057] In other embodiments, the air outlet housing 131 is not provided with the heating assembly 134. That is to say, the airflow generated by the airflow generating device 13 is at ambient temperature. Such ambient-temperature airflow is also effective in straightening hair B. Preferably, however, the air outlet housing 131 is provided with the heating assembly 134 capable of heating the air. The hot airflow generated by the airflow generating device 13 provides a superior hair-straightening effect.

[0058] By arranging the airflow generating device, airflow van be generated and direct to a desired position where airflow application is required.

[0059] In some embodiments, the first clamping block 11 is connected to the air outlet housing 131 and covers the air outlet window 135. The first clamping block 11 is provided with a hollowed window 110, an edge of the hollowed window 110 and the air outlet housing 131 together define the at least one airflow discharge port 12.

[0060] In some embodiments, an air inlet 1321 and an air outlet 1322 are disposed at two ends of the air guide sleeve body 132, respectively. The air generating assembly 133 is disposed inside the air guide sleeve body 132 and configured to direct airflow from the air inlet 1321 to the air outlet 1322. The air outlet housing 131 encloses an air outlet chamber 110 and is provided with an air inlet port 1311 in fluid communication with the air outlet 1322 of the air guide sleeve body 132. The air generating assembly 133 produces airflow, which is heated by the heating assembly 134 while passing through the air outlet chamber 110, and then blown out from a side of the first clamping block 11. Since the first clamping block 11 covers the air outlet window 135, the airflow is initially blown vertically upward from the air outlet window 135 (as shown by the flow direction F1 in FIG. 5), then deflected by the first clamping block 11 to make a 90° turn and flow horizontally outward (as shown by the flow direction F2 in FIG. 5). It should be noted that the 90° turn is not strictly limited to exactly 90 degrees, and may include approximate 90° turns such as 85°, 93°, or 95°.

[0061] In some embodiments, the air generating assembly 133 may be configured with any feasible structure capable of producing airflow. By way of example, the air generating assembly 133 may include a fan. An airflow velocity generated by the air generating assembly 133 may be adjusted according to requirements, e.g., by regulating a power level of the air generating assembly 133 to increase or decrease the airflow velocity, thereby enhancing user experience.

[0062] In some embodiments, the heating assembly 134 may be configured with any viable heat-generating structure, including but not limited to a resistance heating tube, a resistance heating plate, or the like. The heating assembly 134 may be configured to heat air to various temperatures as required, with adjustable power settings enabling precise control of the temperature of the airflow.

[0063] As shown in FIGS. 5 and 6, the air outlet housing 131 may include a base cover 1313 and a top cover 1314. An inner wall of the base cover 1313 is provided with a first heat-resistant partition 136 corresponding to the heating assembly 134, and an inner wall of the top cover 1314 is provided with a second heat-resistant partition 137 corresponding to the heating assembly 134. In some embodiments, the base cover 1313 and the top cover 1314 may be fixedly connected by providing threaded holes on the base cover 1313 and the top cover and inserting screws therethrough. Alternatively, the base cover 1313 and the top cover 1314 may be fixedly connected through a snap-fit connection, an adhesive bonding, or the like. The first heat-resistant partition 136 and the second heat-resistant partition 137 are configured to isolate the heat generated by the heating assembly 134, so as to prevent the heat from being transferred to the base cover 1313 and the top cover 1314, which may otherwise cause damage to the hot-air straightener. In some embodiments, the first heat-resistant partition 136 and the second heat-resistant partition 137 may be made of a heat-resistant material such as metal or ceramic.

[0064] In some embodiments, as shown in FIGS. 2 and 6, the air outlet housing 131 is provided with a temperature detection device 16 capable of monitoring temperature. For example, the temperature detection device 16 may be configured with a thermistor or other types of temperature sensors, as long as it can accurately measure the temperature of the airflow within the air outlet chamber 110.

[0065] In some embodiments, the temperature detection device 16 may be disposed at the at least one airflow discharge port 12 of the air outlet chamber 110 to monitor an air temperature at the at least one airflow discharge port 12. The detected air temperature is then transmitted to a control module of the hair straightener, which subsequently regulates an operation of the heating assembly 134, thereby preventing excessive airflow temperatures that may potentially damage the hair.

[0066] In some embodiments, as shown in FIGS. 5 and 6, the air guide sleeve body 132 includes a guiding section 1323 that gradually narrows in a direction from an air inlet end of the air guide sleeve body 132 to an air outlet end of the air guide sleeve body 132. The air inlet end refers to an end near the air inlet 1321, the air outlet end refers to an end near the air outlet 1322.

[0067] The guiding section is designed to compress the airflow generated by the air generating assembly, thereby increasing the velocity of the outgoing airflow.

[0068] In some embodiments, the guiding section 1323 gradually changes from a circular shape to a flattened shape in the direction from the air inlet end to the air outlet end, thereby forming a flattened airflow pattern when the airflow is discharged.

[0069]In some embodiments, as shown in FIGS. 5 and 6, the guiding section 1323 includes an initial end and a terminal end, where the initial end serves as the air inlet end and the terminal end serves as the air outlet end. An opening at the terminal end of the guiding section 1323 may constitute the air outlet 1322. The terminal end of the guiding section 1323 is sleeved onto the air outlet housing 131 (e.g., fitting over a terminal end of the air outlet housing 131, which may constitute the air inlet port 1311). A plurality of snap-in holes 1324 are disposed on a side wall of the terminal end of the guiding section 1323, and a plurality of snap-in protrusions 1312 capable of being inserted into the plurality of snap-in holes 1324 are disposed on an outer side wall of the air outlet housing 131, e.g., an outer side wall of the terminal end of the air outlet housing 131. A fixed connection between the air guide sleeve body 132 and the air outlet housing 131 is achieved by inserting the plurality of snap-in protrusions 1312 into the plurality of snap-in holes 1324.

[0070]It may be understood that the air guide sleeve body 132 may be made of a flexible material, allowing it to be directly sleeved onto the terminal end of the air outlet housing 131.

[0071]In some embodiments, the air guide sleeve body 132 may be an integrated structure made of soft silicone or flexible rubber. For example, the air guide sleeve body 132 is an integrated structure made of soft silicone, i.e., the entire air guide sleeve body 132 is a flexible sleeve made of soft silicone. This design enables the air guide sleeve body 132 to be sleeved onto the terminal end of the air outlet housing 131. Additionally, the air guide sleeve body 132 can better conform to an inner wall of a housing of the hair straightener, thereby improving installation stability. More importantly, the flexible air guide sleeve body 132 surrounding the air generating assembly 133 can effectively isolate vibration transmission and reduce noise transfer efficiency, significantly minimizing the impact of vibration and noise while enhancing product comfort during use.

[0072]FIG. 7 is an exploded schematic diagram of a partial structure of a dual-heating-mode auxiliary clamping member according to some embodiments of the present disclosure.

[0073] In some embodiments, as shown in FIGS. 4 and 7, the hair straightener may further include a heating device 22, enabling the hair straightener to operate in a dual-heating mode in which the heating assembly 134 and the heating device 22 perform heating simultaneously.

[0074] In some embodiments, the heating device 22 may be disposed on the auxiliary clamping member 2 to heat the second clamping block 21. In some embodiments, an accommodation chamber 210 is provided inside the second clamping block 21, and the heating device 22 includes a heating element 221 disposed inside the accommodation chamber 210. Exemplary heating elements 221 may include a PTC heater, an MCH heater, a heating film, or the like. In some embodiments, the second clamping block 21 may be configured as an integrated structure made of aluminum, providing excellent thermal conductivity while maintaining certain heat retention properties, thereby achieving better coordination with the heating device 22.

[0075] By way of example, as shown in FIGS. 4 and 7, two side walls of the second clamping block 21 are provided with accommodation grooves 210 for a metal heating wire 221 to pass through. The metal heating wire 221 is threaded through the accommodation grooves 210 and arranged around a perimeter of the second clamping block 21. The metal heating wire 221 may be electrically connected via a conductor to a circuit board or a power source of the hair straightener. When electrified, the metal heating wire 221 generates heat that is transferred to the second clamping block 21 to heat the clamping block 121, thereby enabling the hair to be heated and straightened.

[0076] The embodiments described in the present disclosure may provide at least the following beneficial effects. The hair straightener generates airflow through the air generating assembly, which is then heated by the heating element as the airflow passes through the air outlet chamber before being discharged from a side of the first clamping block. When the first clamping block clamps hair, the airflow is not blown directly onto the hair but rather along the growth direction of the hair, enabling the hair to be heated uniformly and over a wide range. The airflow simultaneously smoothens and straightens the hair. Furthermore, the airflow initially flows toward the first clamping block, imparting thermal energy to it. Using the airflow as the primary heat source provides uniform and extensive heating of the hair, while the preheated first clamping block applies additional thermal energy when clamping the hair. This dual heating approach prevents localized, concentrated heat exposure that may cause hair dehydration and damage, thereby protecting hair integrity. Additionally, when the hair is clamped, the hair straightener directs the airflow through the at least one air-guiding gap and the air guide outlet. The incorporation of the negative ion output tube at the at least one air-guiding gap enriches the discharged airflow with negative ions, which helps reduce hair split ends and maintains smooth, shiny hair quality.

[0077] Having thus described the basic concepts, it may be rather apparent to those skilled in the art after reading this detailed disclosure that the foregoing detailed disclosure is intended to be presented by way of example only and is not limiting. Various alterations, improvements, and modifications may occur and are intended to those skilled in the art, though not expressly stated herein. These alterations, improvements, and modifications are intended to be suggested by this disclosure and are within the spirit and scope of the exemplary embodiments of this disclosure.

[0078] Moreover, certain terminology has been used to describe embodiments of the present disclosure. For example, the terms “one embodiment,” “an embodiment,” and/or “some embodiments” mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Therefore, it is emphasized and should be appreciated that two or more references to “an embodiment,” “one embodiment,” or “an alternative embodiment” in various portions of the present disclosure are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined as suitable in one or more embodiments of the present disclosure.

[0079] Furthermore, the recited order of processing elements or sequences, or the use of numbers, letters, or other designations, therefore, is not intended to limit the claimed processes and methods to any order except as may be specified in the claims. Although the above disclosure discusses through various examples what is currently considered to be a variety of useful embodiments of the disclosure, it is to be understood that such detail is solely for that purpose and that the appended claims are not limited to the disclosed embodiments, but, on the contrary, are intended to cover modifications and equivalent arrangements that are within the spirit and scope of the disclosed embodiments. For example, although the implementation of various components described above may be embodied in a hardware device, it may also be implemented as a software-only solution, e.g., an installation on an existing server or mobile device.

[0080] Similarly, it should be appreciated that in the foregoing description of embodiments of the present disclosure, various features are sometimes grouped together in a single embodiment, figure, or description thereof to streamline the disclosure aiding in the understanding of one or more of the various inventive embodiments. This method of disclosure, however, is not to be interpreted as reflecting an intention that the claimed object matter requires more features than are expressly recited in each claim. Rather, inventive embodiments lie in less than all features of a single foregoing disclosed embodiment.

[0081] In some embodiments, the numbers expressing quantities, properties, and so forth, used to describe and claim certain embodiments of the application are to be understood as being modified in some instances by the term “about,” “approximate,” or “substantially.” For example, “about,” “approximate” or “substantially” may indicate ±20% variation of the value it describes, unless otherwise stated. Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that may vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the application are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable.

[0082] Each of the patents, patent applications, publications of patent applications, and other material, such as articles, books, specifications, publications, documents, things, and/or the like, referenced herein is hereby incorporated herein by this reference in its entirety for all purposes, excepting any prosecution file history associated with same, any of same that is inconsistent with or in conflict with the present disclosure, or any of same that may have a limiting effect as to the broadest scope of the claims now or later associated with the present disclosure. By way of example, should there be any inconsistency or conflict between the description, definition, and/or the use of a term associated with any of the incorporated material and that associated with the present disclosure, the description, definition, and/or the use of the term in the present disclosure shall prevail.

[0083] In closing, it is to be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of the present disclosure. Other modifications that may be employed may be within the scope of the present disclosure. Thus, by way of example, but not of limitation, alternative configurations of the embodiments of the present disclosure may be utilized in accordance with the teachings herein. Accordingly, embodiments of the present disclosure are not limited to that precisely as shown and described.