A type of heated hair straightener
By using a near-circular comb tooth structure combining plastic and metal in the electric hot straightener, increasing the comb tooth density and utilizing a heat-conducting plate, the problem of poor combing effect caused by low comb tooth density is solved, achieving better hair styling and protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN JINRI ELECTRICAL APPLIANCE CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-03
AI Technical Summary
Existing electric hair straighteners have low tooth density for the same area of the comb module, resulting in poor hair combing effect.
The comb uses a combination of a first tooth made of plastic and a second tooth made of metal to form a near-circular comb tooth structure, increasing the comb tooth density. The heat is generated by the heat-conducting plate controlled by the electronic control module and transferred to the raised blocks to heat and style the hair, avoiding direct contact with the scalp.
It improves the hair combing effect, prevents scalp burns, increases the heating area and density of the comb teeth module, and ensures that hair is less likely to fall out.
Smart Images
Figure CN224440607U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hair care equipment technology, and in particular to an electric heating hair straightening comb. Background Technology
[0002] An electric heated hair straightener is a hair styling tool that combines the design of a traditional comb with a heating function. The electric heated hair straightener contains a heating element. When the power is turned on, electrical energy is converted into heat energy, causing the heating element to heat up rapidly and conduct the heat to the comb teeth, thus achieving the heating effect.
[0003] In related technologies, electric hair straighteners include a comb tooth module. When the comb tooth module has the same area, the density of the comb teeth on the comb tooth module is relatively small, which means that the comb teeth cannot clamp the hair and heat it during the combing process, resulting in poor hair combing effect. Utility Model Content
[0004] The purpose of this invention is to provide an electric heating hair straightener to solve the technical problem that, with the same area of the comb tooth module, the density of the comb teeth is low and the hair combing effect is poor.
[0005] To achieve the above objectives, this utility model provides an electric heating hair straightener, comprising a housing, a comb tooth module, and an electronic control module. The two ends of the housing are a handle portion and a mounting portion, respectively. The mounting portion is provided with a mounting groove. The electronic control module is disposed inside the housing, and the comb tooth module is assembled in the mounting groove. The comb tooth module includes a first tooth made of plastic and a second tooth made of metal.
[0006] The first toothed component includes a comb plate and a plurality of first comb teeth disposed on the comb plate. The first comb teeth are provided with comb grooves, and the sidewall of the first comb teeth is provided with a clearance groove communicating with the comb grooves.
[0007] The second toothed component includes a heat-conducting plate and a plurality of first heat-conducting teeth disposed on the heat-conducting plate. The sidewalls of the first heat-conducting teeth are provided with protrusions corresponding to the positions of the clearance grooves. Each of the first heat-conducting teeth is inserted into the clearance grooves of each of the first combed components, and the protrusions protrude outside the clearance grooves.
[0008] Wherein, the first comb tooth and the first heat-conducting tooth are fitted together to form a near-circular structure. The cross-section of the near-circular structure is near-circular. The ratio of the minor diameter to the major diameter of the near-circular structure is greater than 0.85 and less than 1. The major diameter of the near-circular structure is less than 5mm.
[0009] Optionally, a plurality of the first comb teeth are arranged in an array along the length and width directions of the comb plate, and a plurality of the first heat-conducting teeth are arranged in an array along the length and width directions of the heat-conducting plate.
[0010] Optionally, the second toothed component further includes a plurality of second heat-conducting teeth disposed on the heat-conducting plate; and the second heat-conducting teeth are shorter than the first heat-conducting teeth;
[0011] The comb plate is provided with multiple mounting holes, and each of the second heat-conducting teeth passes through each mounting hole in a corresponding manner and is spaced apart from the first heat-conducting teeth.
[0012] Optionally, the difference between the length of the first heat-conducting tooth and the length of the second heat-conducting tooth is greater than or equal to 2 mm.
[0013] Optionally, the first toothed component further includes a plurality of second combed components disposed on the comb plate, the plurality of second combed components being spaced apart on both sides of the mounting hole along the width direction of the comb plate.
[0014] Optionally, at least two rows of the second comb teeth are provided on the outer side of the mounting hole, and each of the second comb teeth is staggered along the length direction of the comb plate.
[0015] Optionally, in the length direction of the heat-conducting plate, the spacing between two adjacent first heat-conducting teeth is 5 mm to 7 mm, and the spacing between two adjacent second heat-conducting teeth is 5 mm to 7 mm.
[0016] In the width direction of the heat-conducting plate, the distance between two adjacent first heat-conducting teeth and the distance between the first heat-conducting tooth and the second heat-conducting tooth are 5 mm to 7 mm.
[0017] Optionally, in the longitudinal direction of the comb plate, the spacing between two adjacent second comb teeth is 5 mm to 7 mm;
[0018] In the width direction of the comb plate, the spacing between two adjacent second comb teeth is 2 mm to 3 mm.
[0019] Optionally, the protrusion extends 0.1 mm to 0.3 mm outside the clearance groove.
[0020] Optionally, the second toothed component is made of aluminum.
[0021] This utility model provides an electrically heated hair straightening comb, the advantages of which are:
[0022] This utility model of an electric heating straightening comb includes a housing, a comb tooth module, and an electronic control module. The two ends of the housing are a handle and a mounting part, respectively. The electronic control module controls a heat-conducting plate to generate heat, which is transferred to the first heat-conducting teeth. The first heat-conducting teeth then transfer the heat to the protruding blocks. Since the first heat-conducting teeth are inserted into the comb tooth grooves of the first comb tooth component, and the protruding blocks on the sidewalls of the first heat-conducting teeth protrude outside the clearance grooves of the first comb tooth component, hair passes between adjacent first comb tooth components. The protruding blocks heat and shape the hair. After the first comb tooth component and the first heat-conducting teeth are fitted together, they form a near-circular structure. This near-circular structure provides heat insulation, preventing direct contact between the scalp and the first heat-conducting teeth, thus protecting the scalp and preventing burns. The ratio of the minor axis to the major axis of the near-circular structure is greater than 0.85 and less than 1, forming a structure with a cross-section approximately circular. Compared to a circular structure, a single near-circular structure occupies less area. With the same area of the comb plate, more first comb teeth can be placed on the comb plate, increasing the density of the first comb teeth and the first heat-conducting teeth, thereby increasing the heating area of the comb module. The denser comb teeth also help to hold the hair in place, preventing hair from easily falling off the comb teeth and thus improving the combing effect. Attached Figure Description
[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 A schematic diagram of the structure of the electric heating hair straightener provided in this embodiment of the utility model;
[0025] Figure 2 This is one of the exploded schematic diagrams of an electric heating hair straightener provided in an embodiment of this utility model;
[0026] Figure 3 The second exploded view of the electric heating hair straightener provided in this embodiment of the utility model;
[0027] Figure 4 This is a schematic diagram of the comb module provided in an embodiment of the present utility model;
[0028] Figure 5 A plan view of the comb module provided in an embodiment of this utility model;
[0029] Figure 6 One of the structural schematic diagrams of the first toothed component provided in the embodiment of this utility model;
[0030] Figure 7 This is the second schematic diagram of the structure of the first toothed component provided in the embodiment of this utility model;
[0031] Figure 8 This is a schematic diagram of the structure of the second toothed component provided in an embodiment of the present utility model;
[0032] Figure 9 for Figure 5 A magnified view of a portion of point A in the middle.
[0033] The markings in the image are as follows:
[0034] 10. Housing; 11. Handle; 12. Mounting part; 13. Mounting slot; 20. Comb tooth module; 21. First tooth; 210. Comb tooth plate; 211. First comb tooth; 212. Comb tooth groove; 213. Clearance groove; 214. Near-circular structure; 215. Mounting hole; 216. Second comb tooth; 22. Second tooth; 220. Heat-conducting plate; 221. First heat-conducting tooth; 222. Protrusion; 223. Second heat-conducting tooth; 30. Electronic control module; X, length direction; Y, width direction; Z, height direction. Detailed Implementation
[0035] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0036] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer" and other terms used in this utility model to indicate the orientation or positional relationship are based on the positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device and components referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0037] In the description of this utility model, it should be understood that the terms "first," "second," etc., are used to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.
[0038] like Figures 1 to 9As shown, this utility model embodiment provides an electric hair straightener, including a housing 10, a comb tooth module 20, and an electronic control module 30. The housing 10 has a handle portion 11 and a mounting portion 12 at its two ends, respectively. The mounting portion 12 has a mounting groove 13. The electronic control module 30 is disposed within the housing 10, and the comb tooth module 20 is assembled within the mounting groove 13. The comb tooth module 20 includes a first tooth 21 made of plastic and a second tooth 22 made of metal. The first tooth 21 includes a comb tooth plate 210 and a plurality of first comb teeth 211 disposed on the comb tooth plate 210. The first comb tooth 211 has comb tooth grooves 212, and the side wall of the first comb tooth 211 has clearance grooves 212 communicating with the comb tooth grooves 212. 13; The second tooth 22 includes a heat-conducting plate 220 and a plurality of first heat-conducting teeth 221 disposed on the heat-conducting plate 220. The sidewall of the first heat-conducting teeth 221 is provided with protrusions 222 corresponding to the positions of the clearance grooves 213. Each first heat-conducting tooth 221 is inserted into the clearance grooves 213 of each first comb tooth 211, and the protrusions 222 protrude outside the clearance grooves 213. The first comb tooth 211 and the first heat-conducting teeth 221 are fitted together to form a near-circular structure 214. The cross-section of the near-circular structure 214 is near-circular. The ratio of the minor diameter to the major diameter of the near-circular structure 214 is greater than 0.85 and less than 1. The major diameter of the near-circular structure 214 is less than 5 mm.
[0039] In this embodiment, the housing 10 has a handle portion 11 and a mounting portion 12 at its two ends. The handle portion 11 is convenient for users to hold and operate, and the mounting groove 13 on the mounting portion 12 provides assembly space for the comb module 20, which is used to comb hair. The housing 10 has a length direction X, a width direction Y, and a height direction Z, and the handle portion 11 and the mounting portion 12 are respectively provided at both ends of the housing 10 along the length direction X.
[0040] In the comb module 20, the first tooth 21 is made of plastic and serves as heat insulation; the second tooth 22 is made of metal and serves as heat conduction. In the first tooth 21, the first comb tooth 211 extends along the direction perpendicular to the comb plate 210 (i.e., the height direction Z of the housing 10), and the first comb tooth 211 and the comb plate 210 are integrally formed plastic structures. In the second tooth 22, the first heat-conducting tooth 221 extends along the direction perpendicular to the heat-conducting plate 220 (i.e., the height direction Z of the housing 10), and the first heat-conducting tooth 221 and the heat-conducting plate 220 are integrally formed metal structures. For example, the second tooth 22 is made of aluminum, and the second tooth 22 is an aluminum tooth.
[0041] Based on the above technical solution, during combing, the heat-conducting plate 220 generates heat through the electronic control module 30. The heat is transferred to the first heat-conducting tooth 221, which then transfers the heat to the protrusion 222. Since the first heat-conducting tooth 221 is inserted into the comb tooth groove 212 of the first comb tooth 211, and the protrusion 222 on the side wall of the first heat-conducting tooth 221 protrudes outside the clearance groove 213 of the first comb tooth 211, the hair passes between adjacent first comb teeth 211. The protrusion 222 heats and shapes the hair. After the first comb tooth 211 and the first heat-conducting tooth 221 are fitted together, they form a near-circular structure 214. The near-circular structure 214 can insulate against heat and prevent the scalp from directly contacting the first heat-conducting tooth 221, thereby protecting the scalp and preventing burns.
[0042] In this embodiment, as Figure 9 As shown, the major axis of the near-circular structure 214 is L1, and the minor axis is L2. The ratio of the minor axis L2 to the major axis L1 is greater than 0.85 and less than 1, meaning that the near-circular structure 214 forms a structure with a cross-section approximately circular. Compared to a circular structure with a diameter of L1, a single near-circular structure 214 occupies a smaller area. Given a comb plate 210 with the same area, this embodiment can provide more first comb teeth 211 on the comb plate 210, increasing the density of the first comb teeth 211 and the first heat-conducting teeth 221, thereby increasing the heating area of the comb module 20. The high-density comb teeth help to hold the hair in place, preventing hair from easily falling off the comb teeth, thus improving the straightening and combing effect.
[0043] For example, the ratio of the minor diameter L2 to the major diameter L1 is 0.95, the major diameter L1 is 4 mm, the minor diameter L2 is 3.8 mm, and the near-circular structure 214 forms a protruding structure with a cross-section approximately circular.
[0044] In some embodiments, the electronic control module 30 includes a control element and a heating element. The heating element is connected to the heat-conducting plate 220, and the control element is used to control the heating element to generate heat. When combing hair, the electronic control module 30 controls the heating element to generate heat. The heating element first transfers heat to the heat-conducting plate 220, and then to the first heat-conducting teeth 221. The first heat-conducting teeth 221 then transfer heat to the protrusion 222.
[0045] In some embodiments, the handle portion 11 is provided with buttons for controlling the electronic control module 30.
[0046] In some embodiments, such as Figure 3 As shown, a plurality of first comb teeth 211 are arranged in an array along the length direction X and the width direction Y of the comb tooth plate 210, and a plurality of first heat-conducting teeth 221 are arranged in an array along the length direction X and the width direction Y of the heat-conducting plate 220.
[0047] Specifically, multiple first comb teeth 211 are arranged in an array along the length direction X and width direction Y of the comb plate 210 to form a neatly arranged comb tooth structure, which can improve the hair combing effect. Correspondingly, multiple first heat-conducting teeth 221 are arranged in an array along the length direction X and width direction Y of the heat-conducting plate 220, and each first heat-conducting tooth 221 is inserted into the comb tooth groove 212 of each first comb tooth 211.
[0048] In some embodiments, such as Figures 4 to 7 As shown, the second tooth 22 includes a plurality of second heat-conducting teeth 223 disposed on the heat-conducting plate 220, and the second heat-conducting teeth 223 are shorter than the first heat-conducting teeth 221; the comb plate 210 is provided with a plurality of mounting holes 215, and each second heat-conducting tooth 223 passes through each mounting hole 215 in a corresponding manner and is spaced apart from the first heat-conducting teeth 221.
[0049] Specifically, the second heat-conducting tooth 223 is made of metal and has a heat-conducting effect. The second heat-conducting tooth 223 and the heat-conducting plate 220 can be integrally formed. The second heat-conducting tooth 223 is vertically arranged on the heat-conducting plate 220 along the height direction Z of the shell 10 and is spaced apart from the first heat-conducting tooth 221. The second heat-conducting tooth 223 increases the heating area of the comb module 20 and improves the straightening and combing effect of hair. When combing hair, although the second heat-conducting tooth 223 is directly exposed without the protection of the first comb tooth 211, the second heat-conducting tooth 223 is shorter than the first heat-conducting tooth 221, and the plastic material of the first heat-conducting tooth 221 has a certain structural strength and will not bend or deform. Therefore, the second heat-conducting tooth 223 will not come into direct contact with the scalp, avoiding burns to the scalp.
[0050] When installing the comb module 20, each of the first heat-conducting teeth 221 is inserted into the comb groove 212 of each of the first comb components 211, and each of the second heat-conducting teeth 223 passes through the mounting holes 215 on the comb plate 210 and is arranged with each of the first comb components 211.
[0051] For example, on a heat-conducting plate 220 with an area of 1900 square millimeters, a total of 63 first heat-conducting teeth 221 and second heat-conducting teeth 223 can be provided to increase the heating area of the second tooth 22.
[0052] In some embodiments, the difference between the length of the first heat-conducting tooth 221 and the length of the second heat-conducting tooth 223 is greater than or equal to 2 mm.
[0053] Specifically, in the height direction Z of the housing 10, the second heat-conducting tooth 223 is at least 2 mm shorter than the first heat-conducting tooth 221. Within this length difference range, the second heat-conducting tooth 223 can heat the hair without contacting the scalp. For example, the length difference between the first heat-conducting tooth 221 and the second heat-conducting tooth 223 is 2 mm.
[0054] In some embodiments, such as Figures 4 to 7 As shown, the first toothed member 21 also includes a plurality of second comb teeth 216 disposed on the comb tooth plate 210, and the plurality of second comb teeth 216 are disposed at intervals along the width direction Y of the comb tooth plate 210 on both sides of the mounting hole 215.
[0055] Specifically, the second comb teeth 216 are made of plastic and have a heat-insulating effect. The second comb teeth 216 are ordinary plastic comb teeth. Multiple second comb teeth 216 are spaced apart along the width Y direction of the comb plate 210 on the left and right sides of the mounting hole 215, and arranged side-by-side with the first comb teeth 211, to assist in combing hair. It can be understood that a portion of the comb teeth in the comb module 20 (i.e., the first heat-conducting teeth 221 and the second heat-conducting teeth 223) have a heat-conducting effect, while another portion of the comb teeth (i.e., the second comb teeth 216) do not have a heat-conducting effect.
[0056] In some embodiments, such as Figure 5 At least two rows of second comb teeth 216 are provided on the outer side of the mounting hole 215, and each second comb tooth 216 is staggered along the length direction X of the comb plate 210.
[0057] For example, two rows of second comb teeth 216 are provided on the outer side of the mounting hole 215. In the width direction Y, each second heat-conducting tooth 223 passes through each mounting hole 215 on the comb plate 210 in a one-to-one correspondence. Two rows of second comb teeth 216 are provided on the outer side of the second heat-conducting teeth 223. The second comb teeth 216 and the second heat-conducting teeth 223 are staggered in the length direction X, which can improve the density of the comb teeth.
[0058] In a specific example, such as Figure 7 and Figure 8 As shown, along the length direction X, the comb plate 210 has three rows of first comb teeth 211 at its center, and two rows of second comb teeth 216 at each of its two sides. The heat-conducting plate 220 has three rows of first heat-conducting teeth 221 at its center, and one row of second heat-conducting teeth 223 at each of its two sides. After assembling the first teeth 21 and the second teeth 22, from the center outwards, the components are the first comb teeth 211 (or the first heat-conducting teeth 221), the second heat-conducting teeth 223, and the second comb teeth 216. The comb module 20 has a nine-row comb structure.
[0059] In some embodiments, in the longitudinal direction X of the heat-conducting plate 220, the spacing between two adjacent first heat-conducting teeth 221 is 5 mm to 7 mm, and the spacing between two adjacent second heat-conducting teeth 223 is 5 mm to 7 mm.
[0060] For example, along the length X of the heat-conducting plate 220, the spacing between two adjacent first heat-conducting teeth 221 is 5 mm, and the spacing between two adjacent second heat-conducting teeth 223 is 5 mm. In this way, the overall density of the comb teeth in the comb module 20 is relatively high, and the comb teeth are relatively dense.
[0061] For example, along the length X of the heat-conducting plate 220, the spacing between two adjacent first heat-conducting teeth 221 is 7 mm, and the spacing between two adjacent second heat-conducting teeth 223 is 7 mm. In this way, the overall density of the comb teeth in the comb module 20 is relatively small, and the comb teeth are relatively sparse.
[0062] In some embodiments, the distance between two adjacent first heat-conducting teeth 221 and the distance between the first heat-conducting tooth 221 and the second heat-conducting tooth 223 in the width direction Y of the heat-conducting plate 220 are 5 mm to 7 mm.
[0063] For example, in the width direction Y of the heat-conducting plate 220, the distance between two adjacent first heat-conducting teeth 221 is 6 mm, and the distance between the first heat-conducting tooth 221 and the second heat-conducting tooth 223 is 6 mm.
[0064] In some embodiments, the distance between two adjacent second comb teeth 216 in the longitudinal direction X of the comb plate 210 is 5 mm to 7 mm.
[0065] For example, in the longitudinal direction X of the comb plate 210, the distance between two adjacent second comb teeth 216 is 6 mm.
[0066] In some embodiments, the spacing between two adjacent second comb teeth 216 in the width direction Y of the comb plate 210 is 2 mm to 3 mm.
[0067] For example, the spacing between two adjacent second comb teeth 216 is 2 mm.
[0068] In some embodiments, the protrusion 222 protrudes 0.1 mm to 0.3 mm outside the clearance groove 213. For example, the protrusion 222 protrudes 0.2 mm outside the clearance groove 213.
[0069] It should be understood that the term "and / or" as used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations. It should be noted that, herein, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.
[0070] The sequence numbers of the above-described embodiments of this utility model are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above descriptions are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. An electrically heated straightening comb, characterized in that The device includes a housing, a comb tooth module, and an electronic control module. The housing has a handle and a mounting part at its two ends, respectively. The mounting part has a mounting groove. The electronic control module is disposed inside the housing, and the comb tooth module is assembled in the mounting groove. The comb tooth module includes a first tooth made of plastic and a second tooth made of metal. The first toothed component includes a comb plate and a plurality of first comb teeth disposed on the comb plate. The first comb teeth are provided with comb grooves, and the sidewall of the first comb teeth is provided with a clearance groove communicating with the comb grooves. The second toothed component includes a heat-conducting plate and a plurality of first heat-conducting teeth disposed on the heat-conducting plate. The sidewalls of the first heat-conducting teeth are provided with protrusions corresponding to the positions of the clearance grooves. Each of the first heat-conducting teeth is inserted into the clearance grooves of each of the first combed components, and the protrusions protrude outside the clearance grooves. Wherein, the first comb tooth and the first heat-conducting tooth are fitted together to form a near-circular structure. The cross-section of the near-circular structure is near-circular. The ratio of the minor diameter to the major diameter of the near-circular structure is greater than 0.85 and less than 1, and the major diameter of the near-circular structure is less than 5 mm.
2. The electrically heated straightening comb of claim 1 wherein, Multiple first comb teeth are arranged in an array along the length and width directions of the comb plate, and multiple first heat-conducting teeth are arranged in an array along the length and width directions of the heat-conducting plate.
3. The electrically heated straightening comb of claim 2 wherein, The second toothed component further includes a plurality of second heat-conducting teeth disposed on the heat-conducting plate, and the second heat-conducting teeth are shorter than the first heat-conducting teeth; The comb plate is provided with multiple mounting holes, and each of the second heat-conducting teeth passes through each mounting hole in a corresponding manner and is spaced apart from the first heat-conducting teeth.
4. The electrically heated straightening comb of claim 3 wherein, The difference between the length of the first heat-conducting tooth and the length of the second heat-conducting tooth is greater than or equal to 2 mm.
5. The electric heating hair straightener according to claim 3, characterized in that, The first toothed component further includes a plurality of second combed components disposed on the comb plate, the plurality of second combed components being spaced apart on both sides of the mounting hole along the width direction of the comb plate.
6. The electrically heated straightening comb of claim 5 wherein, At least two rows of the second comb teeth are provided on the outer side of the mounting hole, and each of the second comb teeth is staggered along the length direction of the comb plate.
7. The electrically heated straightening comb of claim 3 wherein, Along the length of the heat-conducting plate, the distance between two adjacent first heat-conducting teeth is 5 mm to 7 mm, and the distance between two adjacent second heat-conducting teeth is 5 mm to 7 mm. In the width direction of the heat-conducting plate, the distance between two adjacent first heat-conducting teeth and the distance between the first heat-conducting tooth and the second heat-conducting tooth are 5 mm to 7 mm.
8. The electrically heated straightening comb of claim 5 wherein, Along the length of the comb plate, the distance between two adjacent second comb teeth is 5 mm to 7 mm; In the width direction of the comb plate, the spacing between two adjacent second comb teeth is 2 mm to 3 mm.
9. The electrically heated straightening comb of claim 1 wherein, The protrusion extends 0.1 mm to 0.3 mm outside the clearance groove.
10. The electric hair straightening comb according to any one of claims 1 to 9, characterized in that, The second tooth is made of aluminum.