Hair straightener

Abstract

The application discloses a straightening iron, which comprises a straightening iron body and a protection piece. The straightening iron body is provided with two heating plates arranged oppositely. The straightening iron body has an open state in which the two heating plates are spaced apart from each other and a closed state in which the two heating plates are adjacent to each other. The straightening iron body is further provided with a charging battery, a heating assembly, an electric control device and a control switch. The heating assembly, the charging battery and the control switch are electrically connected with the electric control device. The heating assembly is installed on the inner side of the heating plate. The protection piece is provided with a trigger structure and is detachably sleeved on the straightening iron body. When the protection piece is sleeved on the straightening iron body, the trigger structure cooperates with the control switch. The control switch is configured to break the control circuit of the heating assembly when the trigger structure cooperates with the control switch. The technical scheme of the application can prevent the straightening iron from being mistakenly started when being carried.

Description

Technical Field

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

[0002] Hair straighteners, also known as electric straighteners, are hairstyling tools used to quickly straighten and style hair. To facilitate use outdoors or in places without power, some straighteners are equipped with rechargeable batteries. However, when carrying these straighteners in luggage, it's easy to accidentally activate the control buttons, leading to battery depletion. This can also cause the luggage and other items inside to heat up, potentially damaging them and even posing a fire hazard. Summary of the Invention

[0003] The main purpose of the present invention is to provide a hair straightener, which is intended to prevent the hair straightener from being accidentally activated when being carried.

[0004] To achieve the above-mentioned object, the hair straightener proposed by the present invention comprises:

[0005] A hair straightener body having two opposing heating plates, the hair straightener body being capable of an open state in which the two heating plates are spaced apart from each other and a closed state in which the two heating plates are adjacent to each other; the hair straightener body also being equipped with a rechargeable battery, a heating component, an electronic control device, and a control switch, the heating component, the rechargeable battery, and the control switch being electrically connected to the electronic control device, and the heating component being mounted on the inner side of the heating plates; and

[0006] A protective member provided with a trigger structure, wherein the protective member is detachably mounted on the hair straightener body, and when the protective member is mounted on the hair straightener body, the trigger structure cooperates with the control switch;

[0007] The control switch is configured to disconnect the control circuit of the heating component when the trigger structure cooperates with the control switch.

[0008] Optionally, the control switch is a Hall switch, and the trigger structure includes a magnet. When the magnet cooperates with the Hall switch, the Hall switch disconnects the control circuit of the heating component.

[0009] Optionally, the protective member is in a sleeve-like structure with one end open, and in the closed state, the protective member is sleeved on one end of the hair straightener body where the heating plate is provided.

[0010] Optionally, the protective member is provided with a through hole, which passes through the outer surface of the protective member and is connected to the inner cavity of the protective member. When the protective member is sleeved on the hair straightener body, the through hole is correspondingly located between the two heating plates.

[0011] Optionally, the hair straightener body includes a first clamp arm and a second clamp arm, and the first clamp arm and the second clamp arm are connected together at a hinge end to allow the first clamp arm and the second clamp arm to move between the open state and the closed state, and one of the heating plates is provided at the free end of the first clamp arm, and the other heating plate is provided at the free end of the second clamp arm.

[0012] Optionally, a bulge is provided on the side of the first clamp arm facing the second clamp arm, and an avoidance groove is provided on the second clamp arm corresponding to the position of the bulge. The rechargeable battery is arranged in the bulge, and in the closed state, the bulge partially extends into the avoidance groove.

[0013] Optionally, the control switch is provided at the convex portion, and the inner side of the protective member is provided with a mounting protrusion protruding toward the convex portion, and the mounting protrusion is provided with the trigger structure. When the protective member is mounted on the hair straightener body, the mounting protrusion is located between the first clamping arm and the second clamping arm.

[0014] Optionally, the protective member is provided with mounting protrusions on both opposite sides, and when the protective member is mounted on the hair straightener body, each mounting protrusion is located between the first clamping arm and the second clamping arm, and the mounting protrusion on at least one side is provided with the trigger structure; and / or,

[0015] The mounting protrusion is in the shape of a long strip extending along the length direction of the hair straightener; and / or,

[0016] The electronic control device includes a button assembly, and the button assembly is arranged on the side of the convex bulge.

[0017] Optionally, the first clamping arm includes a first shell, a second shell and a first sealing ring, the heating plate is arranged in the first shell, the second shell and the first shell form an electric control cavity, the second shell and the heating plate are distributed along the length direction of the first clamping arm, the first sealing ring is arranged between the first shell and the second shell and surrounds the electric control cavity, and the rechargeable battery and the electric control device are arranged in the electric control cavity.

[0018] Optionally, the heating component includes a graphene heating structure provided on a side of the heating plate facing away from the other heating plate, the graphene heating structure being electrically connected to the electronic control device; the heating plate is made of stainless steel, aluminum or aluminum-magnesium alloy; the graphene heating structure and the heating plate are sintered into one body;

[0019] The graphene heating structure includes a graphene heating element, a first connecting layer and a second connecting layer. The first connecting layer is sintered and formed on the back of the heating plate, the second connecting layer is sintered and formed on the surface of the first connecting layer away from the heating plate, and the graphene heating element is sintered and formed on the surface of the second connecting layer away from the first connecting layer.

[0020] The hair straightener according to the technical solution of the present invention includes a hair straightener body and a protective member that can be mounted on the hair straightener body. A control switch is provided on the hair straightener body, and a trigger structure is provided on the protective member. When the protective member is mounted on the hair straightener body, the trigger structure cooperates with the control switch. Since the control switch is configured to disconnect the control circuit of the heating element when the trigger structure cooperates with the control switch, the heating element is de-energized when the protective member is mounted on the hair straightener body. In other words, when the protective member is properly mounted on the hair straightener body and the trigger structure cooperates with the control switch, even if the button assembly of the hair straightener is accidentally pressed, the heating element will not be activated. This prevents the heating element from being activated by accidental pressing of the button assembly, thereby preventing the hair straightener from being accidentally activated while being carried, thereby improving user safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 Schematic diagram of the structure of an embodiment of a hair straightener of the present invention;

[0023] Figure 2 for Figure 1 A schematic diagram of the hair straightener body and the protective member being separated, wherein the hair straightener body is in a closed state;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure of the hair straightener body when it is in the open state;

[0025] Figure 4 for Figure 2 A schematic diagram of the structure of the middle protective member from another angle;

[0026] Figure 5 for Figure 2 Exploded view of the main body of the medium hair straightener;

[0027] Figure 6 for Figure 2 a cross-sectional view of the main body of the hair straightener;

[0028] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0029] Figure 8 for Figure 2 Another cross-sectional view of the hair straightener body;

[0030] Figure 9 for Figure 8 Enlarged view of point B in the middle;

[0031] Figure 10 for Figure 5 Schematic diagram of the structure of the middle mounting seat and the third sealing ring;

[0032] Figure 11 for Figure 3 An exploded view of the straightener body and protective cover from another angle.

[0033] Description of Figure Numbers:

[0034] 100, hair straightener body; 10, first clamping arm; 101, electronic control chamber; 11, first housing; 111, first groove; 112, clamping slot; 113, second groove; 12, second housing; 121, convex bump; 122, mounting opening; 123, first assembly opening; 125, assembly groove; 13, first support frame; 131, first protrusion; 132, second protrusion; 14, protective cover; 15, elastic return member; 16, mounting seat; 161, annular rib; 162, annular support surface; 163 , mounting groove; 171, first sealing ring; 172, second sealing ring; 173, third sealing ring; 20, second clamping arm; 21, avoidance groove; 22, hinged part; 23, covering part; 30, rechargeable battery; 40, heating component; 50, electronic control device; 51, electronic control board; 52, button assembly; 60, control switch; 71, charging connector; 72, display assembly; 80, heating plate; 81, board body; 82, enclosure; 900, protective part; 901, through hole; 902, mounting protrusion.

[0035] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] The present invention provides a hair straightener.

[0040] In the embodiment of the present invention, please refer to Figures 1 to 11 The hair straightener includes a hair straightener body 100 and a protective member 900. The hair straightener body 100 is provided with two heating plates 80 arranged opposite to each other. The hair straightener body 100 has an open state in which the two heating plates 80 are spaced apart from each other, and a closed state in which the two heating plates 80 are adjacent to each other. The hair straightener body 100 is also provided with a rechargeable battery 30, a heating component 40, an electronic control device 50, and a control switch 60. The heating component 40, the rechargeable battery 30, and the control switch 60 are all electrically connected to the electronic control device 50. The heating component 40 is mounted on the inner side of the heating plate 80.

[0041] The protective member 900 is provided with a trigger structure. The protective member 900 is detachably mounted on the hair straightener body 100. When the protective member 900 is mounted on the hair straightener body 100, the trigger structure engages with the control switch 60. The control switch 60 is configured to disconnect the control circuit of the heating component 40 when the trigger structure engages with the control switch 60.

[0042] In this embodiment, a heating element 40 is provided on the inner side of each heating plate 80 (the side facing away from the other heating plate 80). The heating element 40 is used to heat the heating plates 80. In the closed state, the two heating plates 80 can be parallel, close to, or in contact with each other, so as to clamp the hair together. In the open state, the two heating plates 80 are spaced apart, increasing the gap between them to facilitate pulling out hair or inserting hair between the two heating plates 80.

[0043] When the protective member 900 is not attached to the hair straightener body 100, the control switch 60 is in an on state, meaning that the heating element 40 can be powered normally by the rechargeable battery 30, and the operation of the hair straightener body 100 can be controlled by the hair straightener button assembly 52. ​​When the protective member 900 is attached to the hair straightener body 100 and the trigger structure engages with the control switch 60, the control circuit of the heating element 40 is disconnected, thereby preventing the heating element 40 from being activated.

[0044] There are various ways to implement this function. For example, in one embodiment, the control switch 60 is configured as a mechanical on / off switch. Specifically, when the protective member 900 is not mounted on the hair straightener body 100, the control switch 60 is in an on state. When the protective member 900 is mounted on the hair straightener body 100 and the trigger mechanism engages with the control switch 60, the control switch 60 disconnects the circuit. In another embodiment, the control switch 60 is configured to send a power-off signal to a controller of the electronic control device 50 when the trigger mechanism engages with the control switch 60, thereby disconnecting the control circuit of the heating element 40 through the controller.

[0045] It should be noted that the control circuit of the heating component 40 includes a circuit for controlling the activation of the heating component 40 and a power supply circuit for the heating component 40. In other words, there are various specific implementations of the control switch 60 of the control circuit of the heating component 40. For example, in some embodiments, the control switch 60 is provided on the power supply circuit between the rechargeable battery 30 and the electronic control device 50, and is used to disconnect the power supply circuit between the rechargeable battery 30 and the electronic control device 50 when the trigger structure cooperates with the control switch 60, thereby preventing the heating component 40 from being powered on and activated.

[0046] In other embodiments, the control switch 60 is provided on the electronic control device 50, and is used to disconnect the power supply circuit between the electronic control device 50 and the heating component 40 when the trigger structure cooperates with the control switch 60. For example, the power module of the hair straightener is electrically connected, and is used to disconnect the circuit between the power module and the heating component 40 when the trigger structure cooperates with the control switch 60, thereby preventing the heating component 40 from being powered on and started.

[0047] In other embodiments, the electronic control device 50 includes an electronic control board 51 and a button assembly 52. ​​The control switch 60 is arranged on the electronic control board 51, and is used to disconnect the circuit between the button assembly 52 and the electronic control board 51 when the trigger structure cooperates with the control switch 60, so that the button assembly 52 cannot generate a start or control signal when being pressed, thereby preventing the heating component 40 from being powered on and started.

[0048] The protective member 900 can have various shapes. For example, in some embodiments, the protective member 900 is sleeve-shaped, so as to enclose a portion of the hair straightener body 100 or the entire hair straightener body 100. In other embodiments, the protective member 900 is ring-shaped, so as to be positioned outside the hair straightener body 100. In other embodiments, the protective member 900 is strip-shaped and has a deformable structure that can be deformed into a ring or spiral shape.

[0049] The protective member 900 can be made of a variety of materials. For example, in some embodiments, the protective member 900 is made of silicone. This makes the protective member 900 relatively soft, reduces wear between the protective member 900 and the hair straightener body 100, and also reduces the risk of breakage of the protective member 900. In other embodiments, the protective member 900 is made of rubber or a plastic material such as polyester plastic or PC plastic. In other embodiments, the protective member 900 can also be made of cloth or other materials.

[0050] The hair straightener according to the present invention includes a hair straightener body 100 and a protective member 900 that can be mounted on the hair straightener body 100. A control switch 60 is provided on the hair straightener body 100, and a trigger structure is provided on the protective member 900. When the protective member 900 is mounted on the hair straightener body 100, the trigger structure engages with the control switch 60. Since the control switch 60 is configured to disconnect the control circuit of the heating element 40 when the trigger structure engages with the control switch 60, the heating element 40 is de-energized when the protective member 900 is mounted on the hair straightener body 100. In other words, when the protective member 900 is properly mounted on the hair straightener body 100 and the trigger structure engages with the control switch 60, even if the button assembly 52 of the hair straightener is accidentally pressed, the heating element 40 will not be activated. This prevents the hair straightener from being accidentally activated when the button assembly 52 is pressed, thereby preventing the hair straightener from being accidentally activated while in use and improving user safety.

[0051] In some embodiments, the control switch 60 is a Hall effect switch, and the trigger structure includes a magnet. When the magnet engages the Hall effect switch, the Hall effect switch disconnects the control circuit of the heating element 40. Using a Hall effect switch for the control switch 60 prevents direct contact between the Hall effect switch and the trigger structure, thus preventing wear and tear caused by direct contact and friction between the control switch 60 and the trigger structure. Furthermore, the control switch 60 can be sealed within the hair straightener body 100, and the magnet can be sealed within the protective member 900, preventing the control switch 60 and the magnet from being exposed. This improves the reliability of the control switch 60 while also enhancing the sealing of the hair straightener body 100, thereby enhancing the waterproof performance of the hair straightener body 100.

[0052] In addition, in other embodiments, the control switch 60 is a micro switch, and the trigger structure is provided with a trigger protrusion. When the protective member 900 is mounted on the hair straightener body 100, the trigger protrusion triggers the micro switch.

[0053] In some embodiments, the protective member 900 is a sleeve-like structure with one end open. When closed, the protective member 900 fits over the end of the hair straightener body 100 where the heating plate 80 is located. Specifically, the protective member 900 can be inserted through its open end onto the end of the hair straightener body 100 where the heating plate 80 is located, thereby enclosing the heating plate 80 within the protective member 900. This configuration reduces the size of the protective member 900, minimizing the mating area between the protective member 900 and the hair straightener body 100, facilitating assembly and disassembly, and lowering the production cost of the protective member 900. Furthermore, when the protective member 900 encloses the heating plate 80, it effectively protects the heating plate 80, preventing it from being directly exposed to the outside world. This effectively prevents damage to the heating plate 80 from rubbing against other items in a bag during transportation.

[0054] In some embodiments, the protective member 900 is provided with a through hole 901 that extends through the outer surface of the protective member 900 and communicates with the inner cavity of the protective member 900. When the protective member 900 is mounted on the hair straightener body 100, the through hole 901 is located between the two heating plates 80. Specifically, after using the hair straightener body 100 to style hair, the user may not have time to wait for the heating plates 80 to completely cool before needing to pack the hair straightener away. Providing the through hole 901 in the protective member 900 facilitates heat dissipation from the heating plates 80.

[0055] The number of through holes 901 on the protective member 900 may be one or more. For example, in some embodiments, the protective member 900 is provided with a plurality of through holes 901 , and the plurality of through holes 901 are spaced apart in the length direction of the protective member 900 to increase the heat dissipation area.

[0056] In some embodiments, the protective member 900 is provided with a plurality of through-holes 901 on opposite sides. When the protective member 900 is mounted on the hair straightener body 100, the through-holes 901 on both sides of the protective member 900 are located between the two heating plates 80. The through-holes 901 on the same side of the protective member 900 are spaced apart along the length of the protective member 900, thereby increasing the heat dissipation area and improving air circulation within the protective member 900, thereby enhancing the heat dissipation effect of the heating plates 80.

[0057] In some embodiments, the hair straightener body 100 includes a first clamp arm 10 and a second clamp arm 20, which are coupled together at a hinge end to allow the first clamp arm 10 and the second clamp arm 20 to move between an open state and a closed state, wherein one heating plate 80 is provided at the free end of the first clamp arm 10, and the other heating plate 80 is provided at the free end of the second clamp arm 20.

[0058] Specifically, one end of the first arm 10 and one end of the second arm 20 are hingedly connected. The heating plate 80 at the free end of the first arm 10 is located on the side of the first arm 10 facing the free end of the second arm 20, and the heating plate 80 at the free end of the second arm 20 is located on the side of the second arm 20 facing the free end of the first arm 10. When the free ends of the first arm 10 and the second arm 20 move toward each other until the two heating plates 80 are adjacent, the hair straightener body 100 is in a closed state. When the free ends of the first arm 10 and the second arm 20 move away from each other until the two heating plates 80 are spaced apart, the hair straightener body 100 is in an open state. Using this type of hair straightener body 100, the hair straightener body 100 can be opened at a wide angle, facilitating hair straightening and styling.

[0059] The protective member 900 is sleeved on the free end of the first clamping arm 10 and the free end of the second clamping arm 20 to keep the hair straightener body 100 in a closed state. In this way, the hair straightener occupies less space when carried and is easy to carry.

[0060] Of course, in other embodiments, the hair straightener body 100 includes a grip portion and two mounting portions fixed to the same end of the grip portion, the two mounting portions being spaced apart, each mounting portion being provided with a heating plate 80, and at least one heating plate 80 being movably mounted to the corresponding mounting portion so that the two heating plates 80 can move toward and away from each other. Furthermore, in other embodiments, the hair straightener body 100 includes a first body and a second body, the first body including a grip portion and a mounting portion connected to one end of the grip portion, the second body being hingedly connected between the grip portion and the mounting portion and being movable toward the mounting portion, one heating plate 80 being provided on the second body and the other heating plate 80 being provided on the mounting portion.

[0061] In some embodiments, a protrusion 121 is provided on the side of the first arm 10 facing the second arm 20. A relief groove 21 is provided on the second arm 20 corresponding to the protrusion 121. The rechargeable battery 30 is positioned within the protrusion 121. When closed, the protrusion 121 partially extends into the relief groove 21. Specifically, the side of the protrusion 121 is spaced from the outer surface of the first arm 10, equivalent to the side of the first arm 10 facing the second arm 20 partially protruding toward the second arm 20. The notched edge of the relief groove 21 is spaced from the outer surface of the second arm 20. The provision of the protrusion 121 provides more space within the first arm 10 for the rechargeable battery 30, increasing its capacity and improving the battery life of the hair straightener. The relief groove 21 also prevents the protrusion 121 from abutting the second arm 20, which could increase the gap between the two heating plates 80, thereby ensuring that the hair straightener body 100 can close and grip hair effectively.

[0062] Of course, in other embodiments, the convex bump 121 may not be provided. For example, the first clamping arm 10 and the second clamping arm 20 are each provided with a rechargeable battery 30 , and the rechargeable battery 30 on the first clamping arm 10 and the rechargeable battery 30 on the second clamping arm 20 are arranged in parallel.

[0063] In some embodiments, the electronic control device 50 includes a button assembly 52, which is disposed on the side of the convex bump 121. Specifically, the electronic control device 50 also includes an electronic control board 51, to which the button assembly 52 is electrically connected. The heating element 40 and the rechargeable battery 30 are also electrically connected. By disposing the button assembly 52 on the side of the convex bump 121, the button assembly 52 is prevented from protruding from the outer surface of the first clamping arm 10, thereby reducing the risk of the button assembly 52 being accidentally touched.

[0064] The specific structure of the button assembly 52 can vary. For example, in one embodiment, the button assembly 52 includes a power button electrically connected to the electronic control board 51. In another embodiment, the button assembly 52 includes a power button and at least one temperature adjustment button, both electrically connected to the electronic control board 51. The temperature adjustment button is used to adjust the temperature of the heating element 40. Of course, in other embodiments, the hair straightener body 100 may not be provided with the button assembly 52. ​​For example, the electronic control device 50 may include a wireless module, allowing the hair straightener body 100 to be controlled via a terminal device such as a mobile phone.

[0065] In some embodiments, the control switch 60 is positioned on the protrusion 121. A mounting protrusion 902 is provided on the inner side of the protective member 900, projecting toward the protrusion 121. The mounting protrusion 902 is provided with a trigger structure. When the protective member 900 is mounted on the hair straightener body 100, the mounting protrusion 902 is positioned between the first clamping arm 10 and the second clamping arm 20. Specifically, the open end of the protective member 900 at least partially extends to the side of the protrusion 121. As the protective member 900 is mounted on the hair straightener body 100, the mounting protrusion 902 gradually intersects between the first clamping arm 10 and the second clamping arm 20. This arrangement not only positions the trigger structure close to the protrusion 121 (control switch 60), ensuring reliable coordination between the control switch 60 and the trigger structure, but also allows the mounting protrusion 902 to accurately align the trigger structure and the control switch 60.

[0066] In some embodiments, the size of the portion of the first clamping arm 10 where the heating plate 80 is located is smaller than the size of the portion where the convex bump 121 is located, and the size of the portion of the second clamping arm 20 where the heating plate 80 is located is smaller than the size of the portion where the avoidance groove 21 is located. In this way, the size of the open end of the protective member 900 can be larger, and when the protective member 900 is put on the hair straightener body 100, interference between the mounting protrusion 902 and the heating plate 80 can be avoided.

[0067] In some embodiments, mounting protrusions 902 are provided on opposite sides of the guard 900. When the guard 900 is mounted on the hair straightener body 100, each mounting protrusion 902 is located between the first clamping arm 10 and the second clamping arm 20. At least one mounting protrusion 902 on one side is provided with a trigger structure. With this arrangement, when the guard 900 is mounted on the hair straightener body 100, the two mounting protrusions 902 are located on opposite sides of the convex bump 121 and are both located between the first clamping arm 10 and the second clamping arm 20. This increases the area of ​​​​retention between the guard 900 and the hair straightener body 100, allowing for better positioning, assembly, and retention of the guard 900, and effectively preventing the guard 900 from falling off.

[0068] In some embodiments, the mounting protrusions 902 on both sides of the protective member 900 are provided with a trigger structure. With this arrangement, when the protective member 900 is installed, when the mounting protrusion 902 on either side is located on the side of the convex bump 121 where the control switch 60 is provided, the control switch 60 can be triggered by the trigger structure, thereby avoiding the need to distinguish between the forward and reverse installation of the protective member 900, and facilitating user use.

[0069] In some embodiments, the mounting protrusion 902 is in the shape of an elongated strip extending along the length of the hair straightener. This configuration increases the area between the mounting protrusion 902 and the hair straightener body 100, enhances the structural strength of the mounting protrusion 902, and reduces the risk of breakage. Of course, in other embodiments, the mounting protrusion 902 may also be cylindrical, block-shaped, or the like.

[0070] The first clamping arm 10 includes a first shell 11, a second shell 12 and a first sealing ring 171. The heating plate 80 is arranged in the first shell 11. The second shell 12 and the first shell 11 enclose an electric control cavity 101. The second shell 12 and the heating plate 80 are distributed along the length direction of the first clamping arm 10. The first sealing ring 171 is arranged between the first shell 11 and the second shell 12 and surrounds the electric control cavity 101. The rechargeable battery 30 and the electric control device 50 are arranged in the electric control cavity 101.

[0071] Specifically, the first shell 11 and the second shell 12 are separately provided, and the first shell 11 is provided in the shape of an elongated strip. The first shell 11 is provided with a first groove 111 and a second groove 113. The first groove 111 and the second groove 113 are distributed along the length direction of the first shell 11. The heating plate 80 and the heating component 40 are provided in the first groove 111. The second shell 12 covers the first groove 111 to enclose the first shell 11 to form the electric control cavity 101. The first sealing ring 171 is provided with a first wire hole near the first groove 111, and the connecting line between the electric control device 50 and the heating component 40 passes through the first wire hole. By providing the first sealing ring 171 between the first shell 11 and the second shell 12, the sealing of the electric control cavity 101 can be improved, and dust and water can be effectively prevented from entering the electric control cavity 101. In some embodiments, the second shell 12 is formed with a convex bump 121. Optionally, the first shell 11 and the second shell 12 are detachably connected for easy disassembly and assembly.

[0072] In some embodiments, the heating component 40 includes a graphene heating structure provided on the side of the heating plate 80 facing away from the other heating plate 80, and the graphene heating structure is electrically connected to the electronic control device 50. Specifically, the graphene heating structure contains graphene material, and the superconducting principle of the graphene material is utilized to increase the conductivity of the graphene heating structure, thereby accelerating the heating speed, so that the thermal conversion efficiency of the graphene heating structure is higher, and it can respond electrothermally quickly at low voltage, and the heating speed is fast. The graphene heating structure doped with graphene material has a uniform heating temperature, which has the purpose of protecting and caring for hair. Compared with the traditional PTC heating method, this greatly improves the heating efficiency and the heating speed of the heating plate 80.

[0073] Among them, there are many ways to install the graphene heating structure and the heating plate 80. For example, in one embodiment, the graphene heating structure and the heating plate 80 are sintered into one. The raw material doped with graphene material can be sintered on the heating plate 80 through a sintering process at high temperature. Such an arrangement can make the connection between the graphene heating structure and the heating plate 80 more stable and reliable, and ensure that the heat conduction efficiency between the graphene heating structure and the heating plate 80 is high. Of course, in other embodiments, the graphene heating structure can be bonded to the heating plate 80; or the graphene heating structure can be pressed against the heating plate 80 by a mounting bracket.

[0074] In some embodiments, the heating plate 80 is made of stainless steel. This configuration can increase the melting point of the heating plate 80 and improve the thermal conductivity of the heating plate 80, thereby improving the thermal conductivity efficiency while ensuring the sintering of the graphene heating structure and the heating plate 80. Of course, in other embodiments, the heating plate 80 can also be made of aluminum or an aluminum alloy (such as an aluminum-magnesium alloy), etc., to improve the thermal conductivity efficiency of the heating plate 80 (that is, the material of the heating plate 80 can be stainless steel, aluminum, or an aluminum alloy). The heating plate 80 can also be made of other alloys, etc.

[0075] There are many specific structures of the graphene heating structure. For example, in some embodiments, the graphene heating structure includes a graphene heating element, a first connecting layer and a second connecting layer. The first connecting layer is sintered and formed on the back side of the heating plate 80, and the second connecting layer is sintered and formed on the surface of the first connecting layer away from the heating plate 80. The graphene heating element is sintered and formed on the surface of the second connecting layer away from the first connecting layer.

[0076] In this embodiment, the first connecting layer contains a first glass, and the second connecting layer contains a second glass. The melting point of the first glass is higher than that of the second glass.

[0077] During molding, an organic carrier is mixed, stirred, and ground with the first microcrystalline glass to obtain a first connecting slurry. The first connecting medium slurry is printed on the surface of the heating plate 80 (the surface facing away from the other heating plate 80) in a plane pattern by printing, and the printed sample is finally placed in a drying oven to dry. After drying, the sample is taken out and sintered. An organic carrier is mixed, stirred, and ground with the second microcrystalline glass to obtain a second connecting slurry. The second connecting slurry is printed on the surface of the above-mentioned first connecting layer (the surface facing away from the heating plate 80) in a plane pattern by printing, and the printed sample is finally placed in a drying oven to dry. After drying, the sample is taken out and sintered to obtain a second connecting layer. Then, the doped graphene alloy resistor slurry is printed on the second connecting layer in a circuit with a certain shape pattern by printing (printed on the surface of the second connecting layer facing away from the first connecting layer), and the printed sample is finally placed in a drying oven to dry. After drying, the sample is taken out and placed in a vacuum furnace for sintering, and finally the first connecting layer, the second connecting layer, and the graphene heating element formed on the heating plate 80 are obtained.

[0078] By using microcrystalline glass with different gradient melting points as the composite connecting layer (first connecting layer and second connecting layer) between the heating plate 80 and the graphene heating element, the insulation performance between the heating plate 80 and the graphene heating element is increased, the problem of poor matching of thermal expansion coefficients among the heating plate 80, the composite connecting layer (first connecting layer and second connecting layer) and the graphene heating element is reduced, the bonding strength among the three is improved, and at the same time, the heat shock resistance of the graphene heating element and the safety performance of the hair straightener are improved.

[0079] It should be noted that, in other embodiments, the first connecting layer may be a composite layer structure, for example, the first connecting layer includes a stacked multi-layer (at least two-layer) structure, and the glass melting point in each layer structure of the first connecting layer is gradually reduced in the direction of the heating plate 80 pointing to the graphene heating element. Similarly. The second connecting layer may be a composite layer structure, for example, the second connecting layer includes a stacked multi-layer (at least two-layer) structure, and the glass melting point in each layer structure of the second connecting layer is gradually reduced in the direction of the heating plate 80 pointing to the graphene heating element. In addition, in other embodiments, only a single-layer connecting layer may be provided between the heating plate 80 and the graphene heating element.

[0080] The graphene heater contains graphene, and the specific composition can be multiple. For example, in one embodiment, the graphene heater contains NiAlCr alloy powder (wherein Ni-nickel, Al-aluminum, Cr-chromium), graphene, microcrystalline glass powder and organic carrier. During molding, NiAlCr alloy powder, graphene, microcrystalline glass powder and organic carrier can be mixed, stirred and ground to obtain a doped graphene alloy resistor paste. The doped graphene alloy resistor paste is printed on the second connecting layer with a circuit of a certain shape pattern by printing, and finally the printed sample is placed in a drying oven for drying. After drying, the sample is taken out and placed in a vacuum furnace for sintering to obtain a graphene heater formed on the second connecting layer.

[0081] In another embodiment, the graphene heating element contains NiFe alloy powder (Ni-nickel, Fe-iron), graphene, microcrystalline glass powder and an organic carrier. The molding method of the graphene heating element can refer to the above embodiment and will not be repeated here.

[0082] In another embodiment, the graphene heating element contains NiCu alloy powder (Ni-nickel, Cu-copper), graphene, microcrystalline glass powder and an organic carrier. The molding method of the graphene heating element can refer to the above embodiment and will not be repeated here.

[0083] In another embodiment, the graphene heating element contains NiB alloy powder (Ni-nickel, B-boron), graphene, microcrystalline glass powder and an organic carrier. The molding method of the graphene heating element can refer to the above embodiment and will not be repeated here.

[0084] In an embodiment of the present invention, the organic carrier may include a solvent, a thickener, a thixotropic agent, a surfactant, and a binder. The solvent may be one or more of terpineol, diethylene glycol butyl ether acetate, and dibutyl phthalate. The thickener may be a conventional material in the industry with a thickening effect, such as ethyl cellulose. The thixotropic agent may be a conventional material in the industry with anti-thixotropy, such as hydrogenated castor oil. The surfactant may be a conventional material in the industry with increased surface activity, such as oleic acid. The binder may be a conventional material in the industry with increased viscosity, such as polyvinyl butyral.

[0085] In some embodiments, the first clamp arm 10 includes a first shell 11 and a second shell 12, the free end of the first shell 11 is provided with a first groove 111, the second shell 12 is installed on the side of the first shell 11 facing the second clamp arm 20, and is located on the side of the first groove 111 facing the hinge end, and the side wall of the first groove 111 away from the second shell 12 is provided with a card groove 112.

[0086] The first clamping arm 10 also includes a first support frame 13 installed in the first groove 111, the heating plate 80 is installed in the first support frame 13, and the heating component 40 is arranged between the first support frame 13 and the heating plate 80. One end of the first support frame 13 is provided with a first protrusion 131, and the other end is provided with a second protrusion 132. The first protrusion 131 extends into the card slot 112, and the second protrusion 132 is confined between the second shell 12 and the first shell 11.

[0087] In this embodiment, the first housing 11 further defines a second groove 113, which is located on the side of the first groove 111 facing the hinge end and communicates with the first groove 111. The second housing 12 covers the second groove 113, and the second protrusion 132 extends into the second groove 113 and is confined to the side of the second housing 12 facing the interior of the second groove 113. The hinge end of the first clamping arm 10 is opposite the free end provided with the first support frame 13, and the second housing 12 is located on the side of the first housing 11 facing the second clamping arm 20.

[0088] The hinge end of the first clamping arm 10 may be formed solely by the end of the first housing 11, or may be formed jointly by the end of the first housing 11 and the end of the second housing 12. Of course, in other embodiments, the second groove 113 may not be provided, that is, the portion of the first housing 11 between the first groove 111 and the hinge end may be plate-shaped.

[0089] The first groove 111 and the second groove 113 are sequentially distributed along the length of the first housing 11. The first groove 111 is farther from the hinge end of the first clamping arm 10 than the second groove 113. The notch of the first groove 111 and the notch of the second groove 113 on the first clamping arm 10 are both arranged toward the second clamping arm 20. The sidewall of the first groove 111 that is farther from the second groove 113, i.e., the sidewall of the first groove 111 that faces the second groove 113, is provided with a latching groove 112. When the first protrusion 131 extends into the latching groove 112, the first support frame 13 is restricted from moving outward through the notch of the first groove 111. Similarly, the second protrusion 132 extends into the second groove 113 and is restricted to the side of the second shell 12 facing the second groove 113. The second protrusion 132 can abut against the side of the second shell 12 facing the second groove 113, restricting the first support frame 13 and the heating plate 80 on the first support frame 13 from moving outward through the notch of the first groove 111, thereby restricting the first support frame 13 and the heating plate 80 on the first support frame 13 from escaping from the notch of the first groove 111.

[0090] Optionally, the second clamping arm 20 includes a third housing and a fourth housing. The free end of the third housing is provided with a third groove. The fourth housing is mounted on the side of the third housing facing the second clamping arm 20 and is located on the side of the third groove facing the hinge end. A retaining groove 112 is provided on the sidewall of the third groove away from the fourth housing. The second clamping arm 20 also includes a second support frame mounted in the third groove. The heating plate 80 is mounted on the second support frame. The second support frame has a third protrusion at one end and a fourth protrusion at the other end. The third protrusion extends into the retaining groove 112, and the fourth protrusion is confined between the fourth and third housings.

[0091] In this embodiment, the third housing further comprises a fourth groove, which is located between the third groove and the hinge end of the second clamping arm 20 and communicates with the third groove. The fourth housing covers the fourth groove, and the second protrusion 132 extends into the fourth groove and is restrained on the side of the fourth housing facing the fourth groove. The hinge end of the second clamping arm 20 is opposite the free end where the second support bracket is located. The fourth housing is located on the side of the third housing facing the second clamping arm 20.

[0092] Furthermore, when the first clamp arm 10 includes the first housing 11 and the second housing 12, the first clamp arm 10 and the second clamp arm 20 can be hinged at various locations. For example, in one embodiment, a hinge structure is provided on the end of the second housing 12 away from the first groove 111 for hinged connection with the second clamp arm 20. Alternatively, in another embodiment, a hinge structure is provided on the end of the first housing 11 away from the first groove 111 for hinged connection with the second clamp arm 20.

[0093] The first clamping arm 10 is formed by using a first shell 11 and a second shell 12. The free end of the first shell 11 is provided with a first groove 111. The second shell 12 is installed on the side of the first shell 11 facing the second clamping arm 20 and is located on the side of the first groove 111 facing the hinge end. The side wall of the first groove 111 away from the second shell 12 is provided with a locking groove 112. The first support frame 13 is provided with a first protrusion 131 at one end and a second protrusion 132 at the other end. When the first support frame 13 is installed in the first groove 111, the first protrusion 131 extends into the locking groove 112, and the second protrusion 132 is confined between the second shell 12 and the first shell 11. This is equivalent to confining the first support frame 13 within the first groove 111 of the first shell 11 when the first shell 11 and the second shell 12 are installed together, thereby achieving the installation of the first support frame 13 and the heating plate 80, thereby avoiding the need for additional installation and fixing of the first support frame 13 and the heating plate 80. The invention can not only reduce the assembly process of the hair straightener, but also reduce the number of parts of the hair straightener, simplify the structure of the hair straightener, and help reduce the production cost of the hair straightener.

[0094] The heating plate 80 is made of a metal material, such as stainless steel, aluminum, aluminum alloy, or other metal. The heating structure may be a graphene heating structure or a PTC heating structure. Of course, the present invention is not limited thereto, and the heating plate 80 may also be made of other thermally conductive materials (such as ceramic, etc.). In other embodiments, the first protrusion 131 and the second protrusion 132 may also be directly disposed on the heating plate 80.

[0095] In some embodiments, the first groove 111 has a movable space for the first support frame 13 to move inward, the card slot 112 has a movable space for the first protrusion 131 to move with the first support frame 13 toward the first groove 111 and / or the second groove 113 has a movable space for the second protrusion 132 to move with the first support frame 13 toward the first groove 111, and the first clamping arm 10 also includes at least one elastic return member 15, which is arranged between the first support frame 13 and the bottom wall of the first groove 111.

[0096] Specifically, only the latching slot 112 may have a movable space for the first protrusion 131 to move with the first support frame 13 into the first groove 111, while the second protrusion 132 is fixed between the second shell 12 and the first shell 11. Alternatively, only the second groove 113 may have a movable space for the second protrusion 132 to move with the first support frame 13 into the first groove 111, while the first protrusion 131 is fixed in the latching slot 112. Alternatively, the latching slot 112 may have a movable space for the first protrusion 131 to move with the first support frame 13 into the first groove 111, and the second groove 113 may have a movable space for the second protrusion 132 to move with the first support frame 13 into the first groove 111.

[0097] With this arrangement, when the hair straightener is clamped and the clamping force reaches a certain value, the first support frame 13 can overcome the elastic force of the elastic return member 15 and move into the first groove 111, thereby preventing the first support frame 13 from over-clamping the hair and preventing a large squeezing force on the hair. After the first clamping arm 10 and the second clamping arm 20 are opened, the elastic return member 15 can reset the first support frame 13. Of course, in other embodiments, the first support frame 13 can also be fixed (immovable) within the first groove 111.

[0098] The number of the elastic reset members 15 may be one or more (at least two). When the number of the elastic reset members 15 is multiple, the multiple elastic reset members 15 are spaced apart in the length direction of the hair clamping plate assembly.

[0099] The elastic reset member 15 can have various structures. For example, in one embodiment, the elastic reset member 15 is an elastic body such as silicone or rubber. In other embodiments, the elastic reset member 15 is an elastic structure such as a compression spring or elastic.

[0100] In some embodiments, the first clamping arm 10 further includes a second sealing ring 172, which is disposed between the peripheral portion of the heating plate 80 and the first support frame 13. Specifically, the second sealing ring 172 is disposed corresponding to the peripheral portion of the heating plate 80, and the second sealing ring 172 surrounds the space between the heating plate 80 and the first support frame 13. This configuration allows the second sealing ring 172 to seal the gap between the first support frame 13 and the peripheral portion of the heating plate 80, thereby reducing the risk of water or dust entering the space where the heating component 40 is located through the gap between the first support frame 13 and the peripheral portion of the heating plate 80.

[0101] In some embodiments, the heating plate 80 includes a plate body 81 and a surrounding plate 82 arranged around the periphery of the plate body 81. The second sealing ring 172 is provided with a mounting groove, and the mounting groove is annular and extends circumferentially along the second sealing ring 172. The surrounding plate 82 is correspondingly inserted into the mounting groove. Specifically, the portion of the surrounding plate 82 away from the plate body 81 is correspondingly inserted into the mounting groove. When the heating plate 80 and the first support frame 13 are installed together, the second sealing ring 172 is located between the surrounding plate 82 and the first support frame 13. Such an arrangement can make the contact area between the heating plate 80 and the second sealing ring 172 larger, thereby improving the sealing effect. At the same time, it can also enable the second sealing ring 172 to be better positioned and installed on the heating plate 80, avoiding the need to set up a separate fixing structure for the second sealing ring 172. Of course, in other embodiments, the second sealing ring 172 can also be in the shape of a flat ring.

[0102] There are various ways to connect the heating plate 80 and the first support frame 13. For example, in some embodiments, the heating plate 80 is provided with a limit bar extending toward the first support frame 13. During installation, the limit bar is deformed to abut against the side of the first support frame 13 facing away from the heating plate 80. This simplifies the structure of the heating plate 80 and the first support frame 13 and the installation process. In other embodiments, the first support frame 13 and the heating plate 80 are connected by screws.

[0103] In some embodiments, the first clamp arm 10 includes a first shell 11, a second shell 12 and a mounting seat 16. The second shell 12 and the first shell 11 enclose an electric control cavity 101. A mounting port 122 is provided at one end of the second shell 12 and on the side facing away from the first shell 11. The mounting seat 16 is arranged in the electric control cavity 101 and seals the mounting port 122. The mounting seat 16 seals and separates the mounting port 122 and the electric control cavity 101.

[0104] One end of the second arm 20 is provided with a hinge portion 22, which is hinged to the mounting seat 16 through the mounting opening 122. One heating plate 80 is provided at the end of the first housing 11 away from the mounting groove 163, and the other heating plate 80 is provided at the end of the second arm 20 away from the hinge portion 22.

[0105] Optionally, the mounting base 16 is provided with a second wire-passing hole, and the connecting wire between the heating plate 80 on the second clamping arm 20 and the electronic control device 50 passes through the second wire-passing hole, and a seal is set between the connecting wire and the second wire-passing hole. Specifically, the sealing can be achieved by an interference fit, or by a sealant, or by a sealing ring.

[0106] By providing a mounting opening 122 at one end of the second housing 12, facing away from the first housing 11, the mounting seat 16 is positioned within the electric control chamber 101, and the mounting opening 122 is sealed and covered. The mounting seat 16 seals and separates the mounting opening 122 from the electric control chamber 101. The hinged portion 22 at one end of the second clamping arm 20 is hingedly connected to the mounting seat 16 through the mounting opening 122. This arrangement separates the hinged structure between the first and second clamping arms 10 and 20 from the electric control chamber 101 of the hair straightener body 100, effectively preventing dust and water from entering the electric control chamber 101 through the hinged structure. This improves the sealing and waterproof performance of the hair straightener body 100 and reduces the risk of malfunction of the electronic control device 50 within the electric control chamber 101 of the hair straightener body 100 due to water or dust ingress. Furthermore, by arranging the mounting base 16 in the electric control chamber 101, the hinge structure of the first clamping arm 10 and the second clamping arm 20 can be hidden therein, thereby improving concealment and making full use of the space of the electric control chamber 101 to arrange the hinge structure, which is conducive to improving the structural compactness of the hair straightener body 100.

[0107] In some embodiments, the second housing 12 and the mounting base 16 are separate components. The second housing 12 is provided with a mounting groove 163 that communicates with the mounting opening 122. The hinged portion 22 is hingedly connected to the mounting groove 163. A third sealing ring 173 is provided between the second housing 12 and the mounting base 16, surrounding the mounting opening 122. Separating the second housing 12 and the mounting base 16 can simplify the structure of the second housing 12, reduce the difficulty of molding the second housing 12, and reduce production costs. Furthermore, the seal between the second housing 12 and the mounting base 16 by the third sealing ring 173 provides a good seal while simplifying the structure, thereby simplifying the structure of the hair straightener body 100. Optionally, the second housing 12 and the mounting base 16 are detachably connected, for example, by screws or a snap-fit ​​mechanism, to simplify the installation process and structure. The third sealing ring 173 can be made of rubber or silicone, for example. In addition, in other embodiments, the second shell 12 and the mounting base 16 are integrally formed or the second shell 12 and the mounting base 16 are bonded together.

[0108] In some embodiments, the mounting seat 16 is provided with an annular rib 161 and an annular support surface 162 located outside the annular rib 161 at the notch of the mounting groove 163. The annular rib 161 abuts the edge of the mounting opening 122. The third sealing ring 173 is sleeved outside the annular rib 161 and abuts the annular support surface 162 and the edge of the mounting opening 122. Specifically, when the third sealing ring 173 is sleeved outside the annular rib 161 and is in an uncompressed state (i.e., when the mounting seat 16 is not mounted on the second housing 12), the third sealing ring 173 protrudes toward the end surface of the annular rib 161. In other words, the thickness of the third sealing ring 173 is greater than the height of the annular rib 161 relative to the annular support surface 162. Therefore, when the end surface of the annular rib 161 abuts the edge of the mounting opening 122, the third sealing ring 173 can be tightly pressed between the annular support surface 162 and the edge of the mounting opening 122, ensuring a tight seal.

[0109] By providing the annular rib 161 at the notch of the mounting groove 163, during the installation process, the third sealing ring 173 can be first sleeved on the outside of the annular rib 161, and then the mounting base 16 can be installed on the second housing 12. This facilitates the positioning and installation of the third sealing ring 173, and can also prevent the third sealing ring 173 from shifting during the installation of the mounting base 16 on the second housing 12, thereby ensuring the reliable installation of the third sealing ring 173. Of course, in other embodiments, an annular groove can also be provided on the notch edge of the mounting groove 163, and the third sealing ring 173 can be installed in the annular groove accordingly.

[0110] In some embodiments, a covering portion 23 is further provided at one end of the second clamping arm 20 having the hinge portion 22. The hinge portion 22 is located on the side of the covering portion 23 facing the first clamping arm 10, and the covering portion 23 covers the portion of the second housing 12 having the mounting opening 122. Specifically, the hinge portion 22 is located on the inner side of the covering portion 23. When the hinge portion 22 is hingedly connected to the mounting base 16, the covering portion 23 covers the portion of the second housing 12 having the mounting opening 122. This prevents the mounting opening 122 from being exposed, thereby reducing the risk of water or dust entering the mounting opening 122.

[0111] In some embodiments, the end of the second housing 12 having the mounting opening 122 has opposing first and second side surfaces, with the first side surface having a first assembly opening 123. The hair straightener body 100 further includes a display assembly 72, which is mounted within the first assembly opening 123 and sealed therebetween. Specifically, the display assembly 72 is electrically connected to the electronic control device 50 and is located on one side of the mounting base 16. The display assembly 72 is used to display status information of the hair straightener body 100, such as, but not limited to, temperature information, usage time, and the charge level of the rechargeable battery 30. The display assembly 72 includes a display screen and a transparent panel. The display screen is mounted within the first assembly opening 123, and the transparent panel covers the first assembly opening 123 and is sealed to the edge of the first assembly opening 123 (e.g., by adhesive or a sealing ring).

[0112] Because the portion of the mounting cavity where mounting base 16 is located already occupies a significant amount of space, it is difficult to install the control device's main control board or battery there. However, display assembly 72 is relatively small. Installing display assembly 72 in the space to the side of mounting base 16 can fully utilize this space, improving the compactness of hair straightener body 100. Furthermore, the seal between display assembly 72 and first assembly opening 123 prevents water and dust from entering the interior of hair straightener body 100 through the gap between display assembly 72 and first assembly opening 123, thereby improving the sealing performance of hair straightener body 100.

[0113] In some embodiments, the hair straightener body 100 includes an electronic control device 50, a rechargeable battery 30, and a charging connector 71, all of which are interconnected. The electronic control device 50 and the rechargeable battery 30 are both located within the electronic control chamber 101. The end of the second housing 12, which includes the mounting opening 122, has opposing first and second side surfaces. The second side surface includes a second assembly opening, and the charging connector 71 is sealably mounted within the second assembly opening. Specifically, a seal is provided between the charging connector 71 and the second assembly opening (e.g., using a sealant or a sealing ring) to prevent water or dust from entering the interior of the hair straightener body 100 through the space between the charging connector 71 and the second assembly opening. Because the portion of the mounting chamber where the mounting seat 16 is located already occupies a significant amount of space, it is difficult to mount the main control board or battery there. However, the charging connector 71 is relatively small. Mounting the charging connector 71 in the space to the side of the mounting seat 16 can fully utilize this space, thereby improving the compactness of the hair straightener body 100. Furthermore, when the display assembly 72 is mounted on the first side, the display assembly 72 and the charging connector 71 are located on opposite sides of the mounting base 16, thereby improving the compactness of the hair straightener body 100 and preventing interference between the display assembly 72 and the charging connector 71. Specifically, the charging connector 71 may be a MicroUSB port, a Type-C port, a Lightning port, or the like.

[0114] In some embodiments, the second side surface further comprises an assembly slot 125, with the second adapter port located within the assembly slot 125. The hair straightener body 100 further comprises a protective cover 14, which is movably mounted on the second side surface and seals against the assembly slot 125. To charge the rechargeable battery 30, the protective cover 14 can be opened, exposing the charging connector 71 for connection to the charging cable. After charging is complete, the protective cover 14 can be replaced with the assembly slot 125. This prevents water and dust from entering the charging connector 71 while the hair straightener body 100 is being carried or when not in use, enhancing the dust and water resistance of the hair straightener body 100.

[0115] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A hair straightener, characterized in that: include: A hair straightener body having two opposing heating plates, the hair straightener body being capable of an open state in which the two heating plates are spaced apart from each other and a closed state in which the two heating plates are adjacent to each other; the hair straightener body also being equipped with a rechargeable battery, a heating component, an electronic control device, and a control switch, the heating component, the rechargeable battery, and the control switch being electrically connected to the electronic control device, and the heating component being mounted on the inner side of the heating plates; and A protective member provided with a trigger structure, wherein the protective member is detachably mounted on the hair straightener body, and when the protective member is mounted on the hair straightener body, the trigger structure cooperates with the control switch; The control switch is configured to disconnect the control circuit of the heating component when the trigger structure cooperates with the control switch; The hair straightener body includes a first clamp arm and a second clamp arm, wherein the first clamp arm and the second clamp arm are coupled together at a hinge end to allow the first clamp arm and the second clamp arm to move between the open state and the closed state, wherein one of the heating plates is provided at a free end of the first clamp arm, and the other heating plate is provided at a free end of the second clamp arm; A convex bulge is provided on one side of the first clamping arm facing the second clamping arm, and an avoidance groove is provided on the second clamping arm at a position corresponding to the convex bulge. The rechargeable battery is arranged in the convex bulge. In the closed state, the convex bulge partially extends into the avoidance groove. The control switch is provided at the convex portion, the inner side of the protective member is provided with a mounting protrusion protruding toward the convex portion, the mounting protrusion is provided with the trigger structure, and when the protective member is mounted on the hair straightener body, the mounting protrusion is located between the first clamping arm and the second clamping arm; The protective member is provided with mounting protrusions on opposite sides thereof. When the protective member is mounted on the hair straightener body, each mounting protrusion is located between the first clamping arm and the second clamping arm. The mounting protrusions on both sides of the protective member are provided with the trigger structure. The material of the protective element is silicone, plastic or cloth.

2. The hair straightener according to claim 1, wherein The control switch is a Hall switch, and the trigger structure includes a magnet. When the magnet cooperates with the Hall switch, the Hall switch disconnects the control circuit of the heating component.

3. The hair straightener according to claim 1, wherein: The protective member is in a sleeve-shaped structure with one end open. In the closed state, the protective member is sleeved on one end of the hair straightener body where the heating plate is provided.

4. The hair straightener according to claim 3, wherein: The protective member is provided with a through hole, which passes through the outer surface of the protective member and is connected to the inner cavity of the protective member. When the protective member is sleeved on the hair straightener body, the through hole is correspondingly located between the two heating plates.

5. The hair straightener according to claim 1, wherein The mounting protrusion is in the shape of a long strip extending along the length direction of the hair straightener; and / or, The electronic control device includes a button assembly, and the button assembly is arranged on the side of the convex bulge.

6. The hair straightener according to claim 1, wherein: The first clamping arm includes a first shell, a second shell and a first sealing ring. The heating plate is arranged in the first shell. The second shell and the first shell form an electric control cavity. The second shell and the heating plate are distributed along the length direction of the first clamping arm. The first sealing ring is arranged between the first shell and the second shell and surrounds the electric control cavity. The rechargeable battery and the electric control device are arranged in the electric control cavity.

7. The hair straightener according to claim 1, wherein The heating assembly includes a graphene heating structure provided on a side of the heating plate facing away from the other heating plate, and the graphene heating structure is electrically connected to the electronic control device; the heating plate is made of stainless steel, aluminum or aluminum-magnesium alloy; the graphene heating structure and the heating plate are sintered into one body; The graphene heating structure includes a graphene heating element, a first connecting layer and a second connecting layer. The first connecting layer is sintered and formed on the back of the heating plate, the second connecting layer is sintered and formed on the surface of the first connecting layer away from the heating plate, and the graphene heating element is sintered and formed on the surface of the second connecting layer away from the first connecting layer.

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