Hair straightening comb

Abstract

The utility model relates to the technical field of combs, and discloses a hair straightening comb, which includes a main body, a comb body and a heat-insulating sleeve; the comb body is a heat-conducting structure, and the heat-insulating sleeve is a heat-insulating structure; an electric heating device that generates heat after being powered on is arranged inside the main body, the comb body is fitted on the electric heating device, and the heat-insulating sleeve is arranged on the comb body; a temperature-sensitive color-changing layer is arranged on the outer surface of the heat-insulating sleeve, and when the temperature of the comb body reaches a set temperature, the color of the temperature-sensitive color-changing layer changes. The present application intuitively prompts that the hair straightening comb has reached the set temperature through the color change of the heat-insulating sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of combs, in particular to a hair straightening comb. Background Art

[0002] As a hairdressing tool that can quickly straighten hair without damaging hair, the hair straightening comb has a huge consumer market. Some hair straightening combs currently on the market use a power supply unit to power the mainboard, and then the mainboard's voltage regulator and rectifier to power the heating plate. The internal resistor of the heating plate consumes electricity to generate heat, thereby thermally shaping the hair and achieving various hairstyle effects. When the temperature of the heating plate is between 180℃ and 200℃, it will have a good shaping effect on the hair. Therefore, before using the hair straightening comb, it is generally necessary to preheat the hair straightening comb so that the temperature of the heating plate reaches the range of 180℃ to 200℃.

[0003] The temperature change of existing hair straightening combs will be prompted by a display screen or indicator light. For example, Chinese utility model patent application No. CN 201620736074.6 discloses a hair styling device, which is provided with a display screen on the back of the handle to display the temperature of the heat conductor in the comb body. The user can accurately know the temperature of the heat conductor according to the temperature on the display screen, so as to prevent problems such as poor hair styling effect due to too low temperature or damage to the hair due to too high temperature. However, the display screen is located on the back of the handle, and the user may easily block the display screen when holding it in hand, or need to turn over the hair styling device to observe the temperature prompt on the display screen. For another example, Chinese utility model patent application No. CN201820205935.7 discloses a hair straightening comb. An indicator light is provided on the outer shell of the straight hair comb, and the indicator light is synchronized with the opening and / or closing of the heating unit for observing the switch status of the indicator light; however, the setting of such an indicator light cannot intuitively show whether the temperature has reached the required temperature; for another example, Chinese utility model patent application No. CN201721903059.7 discloses an ordinary thermochromic comb (which only has the function of combing hair, but no heating function). The thermochromic comb is provided with a temperature-changing thermochromic layer on the surface of the nylon hair filaments. When a hair dryer is used to blow hair, the nylon hair filaments of the thermochromic comb will change color as the hot air blown out of the hair dryer is heated.

[0004] Therefore, the current hair straightening combs cannot intuitively indicate whether the preheating is complete. How to enable the hair straightening comb to intuitively indicate whether the preheating is complete through the thermochromic technology is a technical problem that needs to be solved at present. Utility Model Content

[0005] The main purpose of the utility model is to provide a hair straightening comb, aiming to solve the technical problem of how to enable the hair straightening comb to intuitively indicate whether preheating is completed through the temperature-sensitive color changing technology.

[0006] To achieve the above-mentioned purpose, the utility model provides a hair straightening comb comprising a main body, a comb body and a heat insulation sleeve;

[0007] The comb body is a heat-conducting structure, and the heat-insulating sleeve is a heat-insulating structure;

[0008] The main body is provided with an electric heating device that generates heat when powered on, the comb body is fitted on the electric heating device, and the heat insulating sleeve is provided on the comb body; the outer surface of the heat insulating sleeve is provided with a temperature-sensitive color-changing layer, and when the temperature of the comb body reaches a set temperature, the color of the temperature-sensitive color-changing layer changes.

[0009] Optionally, in one embodiment, the temperature-sensitive color-changing layer includes a first paint layer and a second paint layer, the first paint layer covers the outer surface of the insulation sleeve, the second paint layer covers the first paint layer, the color of the first paint layer is different from the color of the second paint layer, after the temperature of the comb body reaches the set temperature, the second paint layer fades to transparent, and after the temperature of the comb body is lower than the set temperature, the second paint layer turns to the initial color.

[0010] Optionally, in one embodiment, the comb tooth structure includes a base plate and a plurality of tooth cores, one side of the base plate is disposed on the electric heating device, and the plurality of tooth cores are disposed on the other side of the base plate.

[0011] Optionally, in one embodiment, the thermal insulation sleeve includes a plurality of tooth housing strips, each of the tooth housing strips includes a plurality of tooth housings, one tooth housing sleeve is arranged on one of the tooth cores, a through hole is provided on the peripheral side of the tooth housing, the top of the tooth housing covers the top of the tooth core, and the peripheral side of the tooth core is exposed through the through hole.

[0012] Optionally, in one embodiment, a groove is provided on the top of the tooth core, and when the tooth shell is sleeved on the tooth core, a heat-insulating cavity is formed between the tooth core and the tooth shell.

[0013] Optionally, in one embodiment, the first baking varnish layer and the second baking varnish layer are sequentially covered on the tooth housing; and / or the first baking varnish layer is ordinary color paint, and the second baking varnish layer is thermochromic paint.

[0014] Optionally, in one embodiment, a positioning slot is provided on one side or both sides of the tooth core, and a positioning convex strip is correspondingly provided inside the tooth housing, and the positioning convex strip is engaged in the slot.

[0015] Optionally, in one embodiment, the hair straightening comb further comprises distribution comb teeth, and the distribution comb teeth are arranged on the peripheral side of the tooth core.

[0016] Optionally, in one embodiment, the distribution comb teeth include a longitudinal row portion, the longitudinal row portion includes long comb teeth and short comb teeth, and the long comb teeth and the short comb teeth are arranged at intervals.

[0017] Optionally, in one embodiment, the main body includes a snap-fit ​​plate, the snap-fit ​​plate is provided with tooth holes to allow one end of the tooth shell and the tooth core to pass through the snap-fit ​​plate, the snap-fit ​​plate presses the thermal insulation sleeve, and the snap-fit ​​plate fixes the thermal insulation sleeve and the comb body to the main body; the distribution comb teeth are fixed on the snap-fit ​​plate.

[0018] In the technical solution provided by the utility model, a thermochromic layer is arranged on the surface of the heat-insulating sleeve, wherein the thermochromic layer includes a first paint layer and a second paint layer, wherein the first paint layer covers the outer surface of the heat-insulating sleeve, and the second paint layer covers the first paint layer, and the color of the first paint layer is different from the color of the second paint layer. By using the principle of thermochromic paint's reversible fading, the surface temperature of the heat-insulating sleeve rises under the heating action of the comb body, and after the comb body temperature reaches the set temperature, the temperature of the heat-insulating sleeve is also heated to the fading temperature of the second paint layer, and the second paint layer fades and becomes transparent; and when the temperature of the heat-insulating sleeve drops below the fading temperature of the second paint layer, the second paint layer returns to the initial color, that is, when the temperature of the comb body reaches the set temperature, the heat-insulating sleeve presents the color of the first paint layer, and when the temperature of the comb body is lower than the set temperature, the heat-insulating sleeve presents the color of the second paint layer. The temperature change of the straight hair comb is intuitively represented by the color change of the heat-insulating sleeve, giving the user an intuitive use prompt. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.

[0020] Figure 1 This is a structural schematic diagram of an embodiment of the hair straightening comb of the utility model;

[0021] Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the hair straightening comb of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the gear housing;

[0023] Figure 4 for Figure 2 A schematic structural diagram of a comb body of an embodiment;

[0024] Figure 5 for Figure 4 A magnified view of region A;

[0025] Figure 6 It is a cross-sectional schematic diagram of the gear housing being sleeved onto the gear core;

[0026] Figure 7 It is a longitudinal cross-sectional schematic diagram of the gear housing being sleeved onto the gear core;

[0027] Figure 8 for Figure 7 A magnified view of region B;

[0028] Fig. 9 It is a schematic diagram of the structure of the snap-fit ​​plate and the distribution comb teeth.

[0029] Wherein: 1. Main body; 11. Electric heating device; 2. Comb body; 21. Tooth core; 211. Card slot; 212. Groove; 22. Bottom plate; 3. Insulation sleeve; 31. Tooth shell strip; 32. Tooth shell; 321. Through hole; 322. Positioning convex strip; 323. First paint layer; 324. Second paint layer; 4. Distribution comb teeth; 41. Vertical row; 411. Long comb teeth; 412. Short comb teeth; 5. Insulation cavity; 6. Snap plate; 7. Tooth hole; 8. Bump. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element, or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used in this specification are only for illustrative purposes. In the description of the utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; the meaning of "multiple" is two or more. The term "include" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof may be present or added.

[0031] In addition, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components. All technical and scientific terms used in this specification have the same meaning as those generally understood by technicians in the technical field of the present utility model. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0032] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] In the embodiments of the present application, Figure 1 An X, Y, and Z coordinate system is established, wherein the X direction is the length extension direction of the tooth core 21 , the Y direction is the lateral arrangement extension direction of the tooth core 21 , and the Z direction is the longitudinal arrangement extension direction of the tooth core 21 .

[0034] Please refer to Figure 1 and Figure 2 The present application provides an embodiment of a hair straightening comb, which includes a main body 1, a comb body 2 and a heat-insulating sleeve 3, wherein the comb body 2 is a heat-conducting structure, and the heat-insulating sleeve 3 is a heat-insulating structure; an electric heating device 11 that generates heat after being powered on is arranged inside the main body 1, the comb body 2 is attached to the electric heating device, and the heat-insulating sleeve 3 is mounted on the comb body 1; the outer surface of the heat-insulating sleeve 3 is provided with a temperature-sensitive color-changing layer, and when the temperature of the comb body 2 reaches the set temperature, the color of the temperature-sensitive color-changing layer changes. The heat-insulating sleeve 3 and the comb body 2 are fixedly connected to the main body 1 to form a hair straightening comb. An electric heating device 11 that generates heat after being powered on is arranged inside the main body 1, and the electric heating device 11 converts electrical energy into heat energy, the comb body 2 is a heat-conducting structure and one end of which is attached to the electric heating device 11, and the comb body 2 absorbs the heat energy of the electric heating device 11 and its temperature rises. The high temperature of the surface temperature of the comb body 2 heats the hair in contact with it, thereby making the hair smooth and not frizzy. And as the surface temperature of the comb body 2 increases, the heat-insulating sleeve 3 is also heated and its temperature will also increase. Since a temperature-sensitive color-changing layer is provided on the surface of the heat-insulating sleeve 3, when the temperature of the heat-insulating sleeve 3 reaches the color-changing temperature of the temperature-sensitive color-changing layer, the color of the heat-insulating sleeve changes to a different color, intuitively indicating whether the comb body of the straight hair comb has been heated, and showing whether the straight hair comb has been cooled.

[0035] refer to Figure 2 , Figure 3 and Figure 8In the present application, the heat insulating sleeve includes three tooth housing bars 31, each tooth housing bar 31 includes a plurality of tooth housings 32, and the same sides of two adjacent tooth housings in the tooth housing bar 31 are connected in pairs. The temperature-sensitive color-changing layer is arranged on the tooth housing 32, wherein the temperature-sensitive color-changing layer includes a first paint layer 323 and a second paint layer 324, wherein the first paint layer 323 covers the outer surface of the tooth housing 32, and the second paint layer 324 covers the first paint layer 323, and the color of the first paint layer 323 is different from the color of the second paint layer 324. When the temperature of the comb body 2 reaches the set temperature, the temperature of the tooth housing 32 reaches the fading temperature of the second paint layer 324 under the heating action of the comb body 2, and the second paint layer 324 fades and becomes transparent, and the tooth housing 32 presents the color of the first paint layer 323; after the electric heating device 11 no longer generates heat, as the external air flows through the comb body 2 and the tooth housing 2 to dissipate heat and cool down, after the temperature of the tooth housing 32 is lower than the fading temperature of the second paint layer 324, the second paint layer 324 restores the initial color, and the tooth housing 32 presents the color of the second paint layer 324. Therefore, before the straight hair comb described in the present application is used, the color of the tooth housing 32 is the color of the second paint layer 324. The first paint layer 323 is made of ordinary paint, and the second paint layer 324 is made of thermochromic paint. Since the fading temperature of the thermochromic paint can be customized by changing the components of the thermochromic paint, the fading temperature of the second paint layer 324 can be set according to demand. In this application, the color of the first paint layer 323 can be set to red, the color of the second paint layer 324 can be set to green, and the fading temperature of the second paint layer 324 is 70°C, that is, when the straight hair comb of the present application is not powered on, the tooth shell 32 of the straight hair comb is green, and when the straight hair comb is preheated and can have a good heating effect on the hair, the surface temperature of the tooth shell 32 of the straight hair comb reaches 70°C, the second paint layer 324 fades to transparent, and the tooth shell 32 presents the color of the first paint layer 323 as red; when the power is turned off, as the heat dissipation proceeds, after the temperature of the surface of the tooth shell 32 is lower than 70°C, the second paint layer 324 returns to green, and the color of the second paint layer 324 presented by the tooth shell 32 turns back to green. Therefore, when the comb tooth structure is the first paint layer 323 in red, it indicates that the straight hair comb has been preheated and can be used; when the tooth shell 32 is the second paint layer 324 in green, it indicates that the straight hair comb has not been preheated and cannot be used, or the straight hair comb has completed heat dissipation and can be put away. Since the color change of the tooth shell 32 is obvious and intuitive, the user can intuitively obtain the signal that the straight hair comb has been preheated, and ensure that the straight hair comb has completed heat dissipation when the straight hair comb is put away, which is conducive to extending the service life of the straight hair comb. The outer surface of the tooth shell 32 is smooth, which is convenient for the coating of the first paint layer 323 and the second paint layer 324, and the temperature difference of the tooth shell 32 is small, and the quality requirements of the temperature-sensitive paint and ordinary color paint are low.

[0036] refer to Figure 2 and Figure 4The comb body 2 includes a bottom plate 22 and a tooth core 21. One side of the bottom plate 22 is fitted on the electric heating device 11, and a plurality of tooth cores 21 are arranged in three longitudinal rows on the other side of the bottom plate 22. Among them, the tooth housing 32 is sleeved on the tooth core 21, and one tooth housing 32 is sleeved on one tooth core 21, and the tooth housing 32 corresponds to the tooth core 21 one by one. A through hole 321 is provided on the peripheral side of the tooth housing 32, and the top of the tooth housing 32 covers the top of the tooth core 21, and the peripheral side of the tooth core 21 is exposed through the through hole 321. Since the bottom plate 22 and the tooth core 21 are both made of heat-conducting materials, the bottom plate 22 and the tooth core 21 conduct the heat energy of the electric heating device 11 to the outside of the main body 1 to directly heat the hair. The surface temperature of the tooth core 21 can be consistent with the temperature of the electric heating device and reach about 180-200°C. The hair stretches and becomes straight between this temperature. The tooth shell 32 covers the top of the tooth core 21, so the top of the tooth shell 32 is in direct contact with the scalp. The tooth shell 32 is made of nylon 66 with good heat insulation effect. The tooth shell 32 can prevent the tooth core 21 from directly contacting the scalp, preventing the scalp or other skin from being burned when the hair straightening comb is used, thereby improving the safety of the hair straightening comb. The bottom plate 22 and the tooth core 21 are generally made of aluminum alloy. Due to the good thermal conductivity of aluminum alloy, the tooth core 21 conducts the heat energy of the electric heating device 11 to the outside of the main body 1 to act on the hair, thereby playing the role of arranging the hair; and aluminum alloy has low density and low price, which is conducive to reducing the weight of the hair straightening comb to make it more convenient to use, and can also reduce production costs.

[0037] refer to Figure 4 It can be seen that the comb body 2 is an integrated structure, wherein one side of the bottom plate 22 is attached to the electric heating device 11, and the bottom plate 22 increases the contact surface area between the tooth core 21 and the electric heating device 11, which is beneficial to the heat conduction of the tooth core 21. In the application, the bottom ends of the tooth cores 21 are connected to each other in pairs to form 3 rows arranged on the other side of the bottom plate 22, and the tooth cores 21 between the two rows are staggered in the horizontal direction, making full use of the main body space so that more tooth cores 21 are provided in the same area. The integrated design of the comb body 2 not only makes the production of the comb body 2 more convenient, but also makes the assembly of the straight hair comb simpler, thereby improving the production and assembly rate of the straight hair comb.

[0038] refer to Figure 3 The bottom ends of two adjacent tooth shells 32 on the same side of a row are connected to each other to form a long tooth shell strip 31. One tooth shell strip 31 is sleeved onto a row of tooth cores 21, making the installation and fixation of the heat insulation sleeve 3 easier, simplifying the structure of the straight hair comb and increasing the production and assembly speed of a single straight hair comb.

[0039] Figure 6 The cross-sectional view of the gear housing 32 being mounted on the gear core 21 on the plane formed by the Z axis and the Y axis is shown in FIG. Figure 3 , Figure 5 and Figure 6In one embodiment, positioning grooves 211 are provided on both sides of the tooth core 21, and positioning ridges 322 are correspondingly provided inside the tooth housing 32. The positioning ridges 322 are engaged in the grooves 211, so that each tooth housing 32 can be accurately mounted on the tooth core 21 one by one to prevent relative sliding between the two.

[0040] Figure 7 The cross-sectional view of the tooth housing 32 being mounted on the tooth core 21 on the plane formed by the Z axis and the X axis, refer to Figure 4 , Figure 5 and Figure 7 In one embodiment, a groove 212 is provided on the top of the tooth core 21. When the tooth shell 32 is sleeved on the tooth core 21, the tooth core 21 and the tooth shell 32 form a heat-insulating cavity 5. Due to the heat-insulating effect of the air, the formed heat-insulating cavity 5 makes the temperature of the tooth shell 32 contacting the scalp lower, thereby preventing scalding of the scalp.

[0041] refer to Figure 1 and Fig. 9 In one embodiment, the hair straightening comb further includes distribution comb teeth 4, which are arranged on the peripheral side of the tooth core 21. The distribution comb teeth 4 are made of plastic, and the material thereof can also be nylon 66, and are fixed on the main body 1 around the tooth core 21. The distribution comb teeth 4 include a longitudinal row portion 41, and the longitudinal row portion 41 includes long comb teeth 411 and short comb teeth 412, and the long comb teeth 411 and the short comb teeth 412 are arranged at intervals and arranged in a high and low staggered manner. The longitudinal row portion 41 is the distribution comb teeth 4 of the hair straightening comb on both sides of the Z-axis direction. The distribution comb teeth 4 are distributed during the hair straightening process, so that the amount of hair heated between each tooth core 21 is more uniform, so that the straightening effect is uniform overall.

[0042] refer to Figure 2 and Fig. 9 In one embodiment, the main body 1 includes a snap-fit ​​plate 6, and the distribution comb teeth 4 are fixed on the snap-fit ​​plate 6. The snap-fit ​​plate 6 is provided with a plurality of tooth holes 7 so that the tooth housing 32 and one end of the tooth core 21 pass through the snap-fit ​​plate 6. The snap-fit ​​plate 6 presses and fixes the tooth housing strip 31 to the comb body 2. Since the snap-fit ​​plate 6 is a part of the main body 1, the snap-fit ​​plate 6 tightly fixes the heat insulation sleeve 3 and the comb body 1 to the main body 1. In the embodiment, each tooth hole 7 can pass through a tooth housing 32 and a tooth core 21, and the distribution of the tooth holes 7 is the same as the arrangement of the tooth core 21 on the bottom plate 22, and two adjacent tooth holes 7 in the same row are connected to each other. A protrusion 8 is symmetrically provided between every two tooth holes 7 in each row, refer to Figure 3The protrusion 8 is pressed onto the connection between two adjacent tooth shells 32 of the tooth shell strip 23, so that the tooth shell strip 31 is pressed and fixed. Since the tooth shell 32 is sleeved on the tooth core 21, the buckle plate 6 can conveniently fix the heat insulation sleeve 3 and the comb body 1 to the main body 1. The connection between two adjacent tooth holes 7 in each row directly exposes the connection between the two adjacent tooth cores 21, which is beneficial for the comb body 2 to heat the hair.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hair straightening comb, characterized in that: The hair straightening comb comprises a main body, a comb body and a heat-insulating sleeve; The comb body is a heat-conducting structure, and the heat-insulating sleeve is a heat-insulating structure; An electric heating device that generates heat when powered is arranged inside the main body, the comb body is arranged on the electric heating device, and the heat insulating sleeve is arranged on the comb body; The outer surface of the heat-insulating sleeve is provided with a temperature-sensitive color-changing layer, and when the temperature of the comb body reaches a set temperature, the color of the temperature-sensitive color-changing layer changes.

2. The hair straightening comb according to claim 1, characterized in that: The temperature-sensitive color-changing layer includes a first paint layer and a second paint layer, the first paint layer covers the outer surface of the insulation sleeve, and the second paint layer covers the first paint layer. The color of the first paint layer is different from the color of the second paint layer. After the temperature of the comb body reaches the set temperature, the second paint layer fades and becomes transparent. After the temperature of the comb body is lower than the predetermined temperature, the second paint layer turns into the initial color.

3. The hair straightening comb according to claim 2, characterized in that: The comb body comprises a bottom plate and a plurality of tooth cores. One side of the bottom plate is arranged on the electric heating device, and the plurality of tooth cores are arranged on the other side of the bottom plate.

4. The hair straightening comb according to claim 3, characterized in that: The heat-insulating sleeve includes a plurality of tooth housing bars, each of which includes a plurality of tooth housings. One tooth housing sleeve is arranged on one tooth core. A through hole is arranged on the peripheral side of the tooth housing. The top of the tooth housing covers the top of the tooth core, and the peripheral side of the tooth core is exposed through the through hole.

5. The hair straightening comb according to claim 4, characterized in that: A groove is arranged on the top of the tooth core. When the tooth shell is sleeved on the tooth core, a heat-insulating cavity is formed between the tooth core and the tooth shell.

6. The hair straightening comb according to claim 4, characterized in that: The first baking varnish layer and the second baking varnish layer are sequentially covered on the gear housing; And / or, the first baking varnish layer is ordinary colored paint, and the second baking varnish layer is thermochromic paint.

7. The hair straightening comb according to claim 4, characterized in that: One side or both sides of the tooth core are provided with a positioning slot, and the interior of the tooth housing is correspondingly provided with a positioning convex strip, and the positioning convex strip is engaged in the slot.

8. The hair straightening comb according to claim 4, characterized in that: The hair straightening comb further comprises distribution comb teeth, and the distribution comb teeth are arranged on the peripheral side of the tooth core.

9. The hair straightening comb according to claim 8, characterized in that: The distribution comb teeth include a longitudinal row portion, the longitudinal row portion includes long comb teeth and short comb teeth, and the long comb teeth and the short comb teeth are arranged at intervals.

10. The hair straightening comb according to claim 8 or 9, characterized in that: The main body includes a snap-fit ​​plate, on which tooth holes are arranged so that one end of the tooth housing and the tooth core can pass through the snap-fit ​​plate, the snap-fit ​​plate presses the heat insulation sleeve, and the snap-fit ​​plate fixes the heat insulation sleeve and the comb body on the main body; the distribution comb teeth are fixed on the snap-fit ​​plate.

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