Hair straightener

Abstract

The invention discloses a hair straightener which comprises a base frame provided with a first end and a second end, an upper clamping plate and a lower clamping plate are hinged to the first end, a torsional spring is hinged to the second end, and the two ends of the torsional spring are connected with the upper clamping plate and the lower clamping plate respectively; the heating unit at least comprises a heating structure arranged on the upper clamping plate and the lower clamping plate and an air supply structure arranged on the base frame, airflow blown out by the air supply structure enters the first hot air cavity of the upper clamping plate and the second hot air cavity of the lower clamping plate respectively and is heated by the heating structure to form hot air, and then the hot air is sent to the base frame. The air is uniformly blown out from an air outlet formed in the same side or the opposite side of the upper clamping plate and the lower clamping plate; the locking unit is used for locking or unlocking the upper clamping plate and the lower clamping plate according to the selection of a user; the hair straightener can solve the problems that in the hair straightening or curling process of a traditional hair straightener, due to the fact that the temperature of the traditional hair straightener is too high or not uniform, hair is dry, the hair quality of a user is damaged, and the traditional hair straightener is not convenient to use.

Description

Technical Field

[0001] The invention relates to the field of hair styling tools, in particular to a hair straightener. Background Art

[0002] A hair straightener, also known as an electric straightener or a straightener in common parlance, heats the hair through an electric current that heats the heating element MCH or PTC or heating wire of the hair straightener, which is then transferred to an aluminum plate or ceramic plate to generate heat. The hair is then heated by the heat to achieve a straightening effect. In the process of straightening or curling hair, a traditional hair straightener can easily dry out the hair due to excessively high or uneven temperatures, which damages the hair quality of the user and is inconvenient to use. Summary of the invention

[0003] In order to overcome the above disadvantages, an object of the present invention is to provide a hair straightener.

[0004] In order to achieve the above objectives, the technical solution adopted by the present invention includes: a base frame having a first end and a second end, the first end being hinged with an upper clamping plate and a lower clamping plate, the second end being hinged with a torsion spring, and the two ends of the torsion spring are respectively connected to the upper clamping plate and the lower clamping plate; a heating unit at least including a heating structure arranged on the upper clamping plate and the lower clamping plate, and an air supply structure arranged on the base frame, the airflow blown out by the air supply structure respectively enters the first hot air cavity of the upper clamping plate and the second hot air cavity of the lower clamping plate, and after being heated by the heating structure to form hot air, it is evenly blown out from the air outlet provided on the same side or the opposite side of the upper clamping plate and the lower clamping plate; a locking unit is used to lock or unlock the upper clamping plate and the lower clamping plate according to user selection.

[0005] In the preferred technical solution of the above-mentioned hair straightener, the heating structure at least includes a heating plate arranged on the inner sides of the lower clamping plate and the upper clamping plate, a heating element connected to the heating plate, and a heat conductive member connected to the heating element, wherein the heat conductive member has a plurality of heat conductive sheets spaced apart from each other.

[0006] In the preferred technical solution of the above-mentioned hair straightener, the air supply structure at least includes a guide fan arranged on the base, and a guide sleeve arranged on the base and covering the guide fan, the guide sleeve having a first guide part and a second guide part, the first guide part is connected to the first hot air cavity, and the second guide part is connected to the second hot air cavity.

[0007] In the preferred technical solution of the above-mentioned hair straightener, guide plates are arranged in the first hot air cavity of the upper clamping plate and the second hot air cavity of the lower clamping plate. The airflow sent into the first hot air cavity and the second hot air cavity by the air supply structure is guided by the guide plates and can flow evenly through the heat conductive component.

[0008] In the preferred technical solution of the above-mentioned hair straightener, the locking unit at least includes a clamping plate which is slidably arranged on the base and has buckles on both sides of the upper clamping plate and the lower clamping plate respectively, a first protrusion formed on the inner side of the upper clamping plate, and a second protrusion formed on the inner side of the lower clamping plate.

[0009] In the preferred technical solution of the above hair straightener, a slide groove is formed on the upper clamping plate and the lower clamping plate, and a button is provided on the top of the clamping plate, and the button is located in the slide groove.

[0010] In the preferred technical solution of the above-mentioned hair straightener, an arc-shaped locking portion is formed on the bottom surface of the clamping plate, the base frame has a bearing portion for tightly abutting against the locking portion, a limiting locking groove is formed on the bearing portion, and when the buckle clamps the first protrusion of the upper clamping plate and the second protrusion of the lower clamping plate, the locking portion is located in the limiting locking groove.

[0011] In the preferred technical solution of the above hair straightener, the limiting slot has a rounded structure near the first end of the base frame.

[0012] In the preferred technical solution of the above hair straightener, the clamping plate is made of hard plastic or elastic metal.

[0013] In the preferred technical solution of the above hair straightener, the guide sleeve is made of heat-resistant rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the present invention; Figure 2 It is a front view of the present invention; Figure 3 This is a schematic diagram of the present invention after removing part of the upper splint structure; Figure 4 Schematic diagram of the internal structure of the upper splint; Figure 5 The internal structure of the present invention is shown in FIG. Figure 1 ; Figure 6 The internal structure of the present invention is shown in FIG. Figure 2 ; Figure 7 It is a position relationship diagram of the air supply structure and the base frame; Figure 8 is a structural schematic diagram of a locking unit; Fig. 9 It is a schematic diagram of the structure of the guide sleeve; Fig.10 is a partial structural schematic diagram of a locking unit; Fig.11 is a schematic diagram of the positions of the first protrusion and the second protrusion; In the figure: base frame 1, first end 11, second end 12, bearing part 13, limiting slot 131, upper clamping plate 2, lower clamping plate 3, torsion spring 4, heating structure 51, heating plate 511, heating element 512, heat conducting member 513, air flow channel 5134, air supply structure 52, fan 521, guide sleeve 522, first guide part 5221, second guide part 5222, air outlet 6, locking unit 7, guide plate 8, clamping plate 71, buckle 711, locking part 712, first protrusion 72, second protrusion 73, slide groove 74, button 75. DETAILED DESCRIPTION

[0015] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0016] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0017] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] like Figures 1 to 11 As shown, the hair straightener of the present invention comprises: a base frame 1, having a first end 11 and a second end 12, the first end 11 is hinged with an upper clamping plate 2 and a lower clamping plate 3, the second end 12 is hinged with a torsion spring 4, and the two ends of the torsion spring 4 are respectively connected to the upper clamping plate 2 and the lower clamping plate 3; a heating unit, at least comprising a heating structure 51 arranged on the upper clamping plate 2 and the lower clamping plate 3, and an air supply structure 52 arranged on the base frame 1, the air flow blown out by the air supply structure 52 enters the first hot air cavity of the upper clamping plate 2 and the second hot air cavity of the lower clamping plate 3 respectively, and after being heated by the heating structure 51 to form hot air, it is evenly blown out from the air outlet 6 provided on the same side or the opposite side of the upper clamping plate 2 and the lower clamping plate 3; a locking unit 7, used to lock or unlock the upper clamping plate 2 and the lower clamping plate 3 according to user selection.

[0019] See also Figures 1 to 3The base frame 1 has a first end 11 and a second end 12 relative to each other, and an upper clamping plate 2 and a lower clamping plate 3 are hinged on both sides of the first end 11 of the base frame 1, respectively. The upper clamping plate 2 and the lower clamping plate 3 can cover the base frame 1 at the parts close to the first end 11 of the base frame 1, so as to facilitate the user to take the hair straightener, and a torsion spring 4 is installed on the second end 12 of the base frame 1 through a rod body, and the two ends of the torsion spring 4 are respectively connected to the middle position of the upper clamping plate 2 and the middle position of the lower clamping plate 3, and the positions of the upper clamping plate 2 and the lower clamping plate 3 are limited by the torsion spring 4 so that the upper clamping plate 2 and the lower clamping plate 3 can only be opened to a predetermined angle, and when the upper clamping plate 2 and the lower clamping plate 3 are closed and need to be opened, the upper clamping plate 2 and the lower clamping plate 3 can be smoothly opened to a predetermined angle by means of the elastic force of the torsion spring 4, thereby improving the user's use effect; the base frame 1 is also provided with a circuit board for controlling the opening and closing of the heating unit.

[0020] See also Figures 4 to 6 The upper clamping plate 2 has a first hot air cavity in the part away from the base frame 1, and an air outlet 6 is opened on the side corresponding to the first hot air cavity. The lower clamping plate 3 has a second hot air cavity in the part away from the base frame 1, and the lower clamping plate 3 also has an air outlet 6 on the side corresponding to the second hot air cavity. The air outlet 6 on the upper clamping plate 2 and the air outlet 6 on the lower clamping plate 3 are arranged on the same side. In other possible modes, the air outlet 6 on the upper clamping plate 2 and the air outlet 6 on the lower clamping plate 3 are arranged on different sides.

[0021] See also Figures 4 to 6 The heating unit includes a heating structure 51 and an air supply structure 52, wherein the heating structure 51 has two groups and is respectively arranged on the upper clamp plate 2 and the lower clamp plate 3, the air supply structure 52 is arranged in the base frame 1, the air supply structure 52 in the base frame 1 can produce airflow and can divide the airflow into two paths, the first airflow flows into the first hot air cavity of the upper clamp plate 2 and is heated by the heating structure 51 in the upper clamp plate 2, the second airflow flows into the second hot air cavity of the lower clamp plate 3 and is heated by the heating structure 51 in the lower clamp plate 3, and the two hot air flows are blown out through the air outlet 6 of the upper clamp plate 2 and the air outlet 6 of the lower clamp plate 3 respectively.

[0022] See also Figure 7 , Figure 8 The locking unit 7 is arranged on the base frame 1, and can slide to unlock the upper clamp plate 2 and the lower clamp plate 3, so that the upper clamp plate 2 and the lower clamp plate 3 can be elastically opened and closed with the help of the torsion spring 4. When the locking unit 7 locks the upper clamp plate 2 and the lower clamp plate 3, the upper clamp plate 2 and the lower clamp plate 3 are in a closed state, and the torsion spring 4 stores elastic potential energy.

[0023] Specifically, when the user uses the hair straightener of the present application, the locking unit 7 is first controlled to unlock the upper clamping plate 2 and the lower clamping plate 3, and the torsion spring 4 releases the elastic potential energy to make the upper clamping plate 2 and the lower clamping plate 3 open naturally. Thereafter, the heating structure 51 and the air supply structure 52 are controlled to work. When the heating structure 51 is preheated to a certain temperature, the upper clamping plate 2 and the lower clamping plate 3 can be used to clamp the hair and move. The heating structure 51 can heat the hair in a contact manner and heat the airflow at the same time, so that the hot airflow blown out through the air outlet 6 of the upper clamping plate 2 and the lower clamping plate 3 can form a secondary heating for the heated hair body, thereby achieving the hair straightening effect and hair straightening efficiency of the present application for the user's hair body, and having the characteristics of simple structure and convenient operation; after the hair straightening is completed, the heating structure 51 is controlled to stop working, and the upper clamping plate 2 and the lower clamping plate 3 are pressed and closed, and then the locking unit 7 is used to lock the upper clamping plate 2 and the lower clamping plate 3.

[0024] In one or more embodiments, the heating structure 51 includes at least a heating plate 511 disposed on the inner side of the lower clamping plate 3 and the upper clamping plate 2, a heating element 512 connected to the heating plate 511, and a heat conductive member 513 connected to the heating element 512, wherein the heat conductive member 513 has a plurality of heat conductive sheets spaced apart from each other.

[0025] See also Figures 4 to 6 , the upper clamping plate 2 and the lower clamping plate 3 are both equipped with a heating plate 511, a heating element 512 and a heat-conducting member 513; wherein the heating plate 511 is an aluminum plate, and the two heating plates 511 are respectively arranged on the inner side surface of the upper clamping plate 2 and the inner side surface of the lower clamping plate 3, and the heating plate 511 is used for direct contact heating with the hair body when the upper clamping plate 2 and the lower clamping plate 3 clamp the user's hair; two groups of heating elements 512 and heat-conducting members 513 are respectively arranged in the upper clamping plate 2 and the lower clamping plate 3, and the heating element 512 is located between the heating plate 511 and the heat-conducting member 513, and the heating element 512 can heat the heating plate 5 11 and the heat-conducting member 513 are heated, and the heating element 512 is a PTC heater; the heat emitted by the heating element 512 can be conducted to the heat-conducting member 513, and the heat-conducting member 513 has a plurality of heat-conducting sheets spaced apart from each other to form an air flow channel 5134. Through this arrangement, the contact area between the airflow and the heat-conducting member 513 can be increased, thereby achieving rapid heating of the airflow, and by controlling the input power of the heating element 512, the temperature of the heat-conducting member 513 can be controlled, thereby achieving temperature control of the hot airflow blown out through the air outlet 6 of the upper clamping plate 2 and the lower clamping plate 3.

[0026] In one or more embodiments, the air supply structure 52 includes at least a fan 521 arranged on the base frame 1, and a guide sleeve 522 arranged on the base frame 1 and covering the fan 521, the guide sleeve 522 having a first guide portion 5221 and a second guide portion 5222, the first guide portion 5221 is connected to the first hot air cavity, and the second guide portion 5222 is connected to the second hot air cavity; the guide sleeve 522 is made of heat-resistant rubber.

[0027] See Figure Figures 4 to 9 The air supply structure 52 at least includes a guide fan 521 and a guide sleeve 522 made of heat-resistant rubber. The guide fan 521 is arranged on the base frame 1. The blades of the guide fan 521 face the second end 12 of the base frame 1. The guide sleeve 522 has a main body and a first guide part 5221 and a second guide part 5222 installed on the main body and connected to the main body. The cross section of the guide sleeve 522 is roughly "Y"-shaped, wherein the main body at least covers the blades of the guide fan 521 so that the air blown by the guide fan 521 The air flow can flow into the guide sleeve 522 to the maximum extent, the first guide part 5221 is connected to the first hot air cavity, the second guide part 5222 is connected to the second hot air cavity, the air flow fanned by the fan 521 can flow into the first hot air cavity of the upper splint 2 through the first guide part 5221, and flow into the second hot air cavity of the lower splint 3 through the second guide part 5222. The two air flows are heated by the heat-conducting parts 513 in the upper splint 2 and the lower splint 3 respectively, and then blown out through the air outlet 6 of the upper splint 2 and the lower splint 3.

[0028] The present application uses the guide sleeve 522 to divide the airflow driven by the guide fan 521 into two paths and introduce them into the upper clamping plate 2 and the lower clamping plate 3 respectively, which can effectively reduce the loss of airflow during the flow process, improve the temperature consistency of the hot airflow blown out through the upper clamping plate 2 and the lower clamping plate 3, and ensure the hair straightening effect of the hair straightener of the present application on the user's hair.

[0029] In other possible implementations, the airflow delivered by the first air guide portion 5221 may be configured to be greater than or less than the airflow delivered by the second air guide portion 5222. With this configuration, the airflows blown out through the upper clamping plate 2 or the lower clamping plate 3 can be made inconsistent, so that the portion with more airflow is blown toward the thicker hair of the user, and the portion with less airflow is blown toward the thinner hair of the user, thereby reducing the possibility of damage to the user's hair and meeting the use requirements in different situations.

[0030] In other possible implementations, an airflow regulating device may be installed in the first guide portion 5221 and the second guide portion 5222, and the airflow regulating device may regulate the size of the airflow passing through the first guide portion 5221 and the second guide portion 5222; the airflow regulating device may be a regulating valve or a balloon capable of inletting and exhausting air. Through this arrangement, the size of the airflow blown out of the upper clamping plate 2 or the lower clamping plate 3 through the air outlet 6 can be further controlled to meet the use requirements in different situations.

[0031] In one or more embodiments, a guide plate 8 is disposed in the first hot air cavity of the upper clamp plate 2 and the second hot air cavity of the lower clamp plate 3. The airflow sent into the first hot air cavity and the second hot air cavity by the air supply structure 52 is guided by the guide plate 8 and can flow evenly through the heat conductive component 513.

[0032] See also Figure 4 , the upper clamping plate 2 and the lower clamping plate 3 are both provided with guide plates 8, and the following only uses the guide plates 8 provided in the upper clamping plate 2 as an example. In the upper clamping plate 2, the cross section of the guide plate 8 is roughly a "concave" structure, and the guide plate 8 has a smaller opening on the side close to the guide sleeve 522, and has a larger opening on the side away from the guide sleeve 522 and extends toward the side of the heat guide member 513 away from the guide sleeve 522, so that the airflow can be transported by the guide plate 8 toward the side of the heat guide member 513 away from the guide sleeve 522, and then the airflow entering the first hot air cavity is balanced, so that the airflow can flow evenly through the heat guide member 513, so that the airflow is evenly heated.

[0033] In a possible implementation, the guide plate 8 is made of metal aluminum or metal copper. Aluminum or copper has good thermal conductivity, so that the heat of the heating element 512 or the heat conducting member 513 can be partially transferred to the guide plate 8, so that the airflow flowing through the guide plate 8 can be preheated, further improving the heating effect of the present application on the airflow, and ensuring the user's hair straightening efficiency.

[0034] In one or more embodiments, the locking unit 7 at least includes a card plate 71 which is slidably configured on the base frame 1 and has buckles 711 on both sides facing the upper clamp plate 2 and the lower clamp plate 3 respectively, a first protrusion 72 formed on the inner side of the upper clamp plate 2, and a second protrusion 73 formed on the inner side of the lower clamp plate 3; a slide groove 74 is formed jointly on the upper clamp plate 2 and the lower clamp plate 3, and a button 75 is provided on the top of the card plate 71, and the button 75 is located in the slide groove 74; the card plate 71 is made of hard plastic or elastic metal.

[0035] See also Figures 7 to 11When the locking cam 77 is in the closed position, the locking cam 77 will be in the closed position with the first and second projections 72 of the locking cam 73 in the unlocked position. When the lock body 7 is in the unlocking state, the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7 is in the unlocking state, and the lock body 7

[0036] It should be noted that the upper splint 2 and the lower splint 3 are both provided with grooves corresponding to the parts of the base frame 1, and the grooves on the upper splint 2 and the lower splint 3 together form a slide groove 74, and the button 75 on the top of the card plate 71 is slidably configured in the slide groove 74; when the button 75 is pushed to the top of the slide groove 74 in the slide groove 74, the two buckles 711 of the card plate 71 are located on the sides of the first protrusion 72 and the second protrusion 73, thereby realizing the restriction of the position of the upper splint 2 and the lower splint 3, and realizing the closure of the upper splint 2 and the lower splint 3.

[0037] In addition, the card plate 71 made of hard plastic or elastic metal can have a certain elastic deformation, which can reduce the weight of the card plate 71 and extend the service life of the card plate 71.

[0038] In one or more embodiments, an arc-shaped locking portion 712 is formed on the bottom surface of the clamping plate 71, and the base frame 1 has a bearing portion 13 for abutting against the locking portion 712, and a limiting slot 131 is formed on the bearing portion 13. When the buckle 711 clamps the first protrusion 72 of the upper clamping plate 2 and the second protrusion 73 of the lower clamping plate 3, the locking portion 712 is located in the limiting slot 131; the limiting slot 131 has a rounded structure near the first end 11 of the base frame 1.

[0039] See also Figure 7 , Figure 8 , Fig.10 , Fig.11 The cross section of the arc-shaped stopper 712 is a semi-cylindrical structure, and the bearing portion 13 of the base frame 1 is provided with a semi-cylindrical limit slot 131; when the upper clamping plate 2 and the lower clamping plate 3 are locked by the buckle 711 of the clamping plate 71, the arc-shaped stopper 712 on the bottom surface of the clamping plate 71 enters the limit slot 131 on the bearing portion 13 of the base frame 1. At this time, since the clamping plate 71 is made of hard plastic or elastic metal, and the stopper 712 of the clamping plate 71 does not enter the limit slot 13 1, because the locking portion 712 is stopped by the bearing portion 13 of the base frame 1 and is in a deformed state, when the locking portion 712 of the clamping plate 71 enters the limiting slot 131, the locking portion 712 of the clamping plate 71 is no longer stopped by the bearing portion 13 of the base frame 1, and the clamping plate 71 returns to its original state. At this time, the user will obviously feel the frustration brought by the clamping plate 71, thereby improving the user experience while ensuring the locking effect of the present application on the upper clamping plate 2 and the lower clamping plate 3.

[0040] See also Figure 8 The limiting slot 131 of the bearing portion 13 of the base frame 1 has a rounded structure near the first end 11 of the base frame 1. Through this arrangement, the arc-shaped locking portion 712 entering the limiting slot 131 can be easier to withdraw, which is convenient for users to operate to separate the upper clamping plate 2 and the lower clamping plate 3, and has the characteristics of simple structure and convenient operation.

[0041] The above implementation modes are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A hair straightener, characterized in that: include: The base frame has a first end and a second end, wherein the first end is hinged with an upper clamping plate and a lower clamping plate, and the second end is hinged with a torsion spring, and two ends of the torsion spring are respectively connected to the upper clamping plate and the lower clamping plate; The heating unit at least comprises a heating structure arranged on the upper clamping plate and the lower clamping plate, and an air supply structure arranged on the base frame, wherein the airflow blown out by the air supply structure enters the first hot air cavity of the upper clamping plate and the second hot air cavity of the lower clamping plate respectively, and after being heated by the heating structure to form hot air, the airflow is evenly blown out from the air outlets provided on the same side or opposite sides of the upper clamping plate and the lower clamping plate; The locking unit is used to lock or unlock the upper clamping plate and the lower clamping plate according to user selection.

2. The hair straightener according to claim 1, characterized in that: The heating structure at least comprises a heating plate arranged inside the lower clamping plate and the upper clamping plate, a heating element connected to the heating plate, and a heat conducting member connected to the heating element, wherein the heat conducting member is provided with a plurality of heat conducting sheets spaced apart from each other.

3. The hair straightener according to claim 2, characterized in that: The air supply structure at least includes a guide fan arranged on the base, and a guide sleeve arranged on the base and covering the guide fan, the guide sleeve having a first guide part and a second guide part, the first guide part is connected to the first hot air cavity, and the second guide part is connected to the second hot air cavity.

4. The hair straightener according to claim 2, characterized in that: Guide plates are arranged in the first hot air cavity of the upper clamping plate and the second hot air cavity of the lower clamping plate. The airflow sent into the first hot air cavity and the second hot air cavity by the air supply structure can flow evenly through the heat conducting member after being guided by the guide plates.

5. The hair straightener according to claim 1, characterized in that: The locking unit at least includes a clamping plate which is slidably arranged on the base frame and has buckles on both sides of the upper clamping plate and the lower clamping plate, a first protrusion formed on the inner side of the upper clamping plate, and a second protrusion formed on the inner side of the lower clamping plate.

6. The hair straightener according to claim 5, characterized in that: The upper clamping plate and the lower clamping plate are jointly formed with a slide groove, and the top of the clamping plate is provided with a button, and the button is located in the slide groove.

7. The hair straightener according to claim 5, characterized in that: An arc-shaped locking portion is formed on the bottom surface of the clamping plate, and the base frame has a bearing portion for tightly abutting against the locking portion. A limiting slot is formed on the bearing portion. When the buckle clamps the first protrusion of the upper clamping plate and the second protrusion of the lower clamping plate, the locking portion is located in the limiting slot.

8. The hair straightener according to claim 7, characterized in that: The limiting slot is in a rounded structure near the first end of the base frame.

9. The hair straightener according to claim 7, characterized in that: The clamping plate is made of hard plastic or elastic metal.

10. The hair straightener according to claim 3, characterized in that: The guide sleeve is made of heat-resistant rubber.

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