Handheld hot air comb

Abstract

The handheld hot air comb comprises a shell, an air duct assembly, a main control board, a fan assembly and a ceramic heating body, and the shell is provided with an air inlet end and an air outlet end which are opposite to each other; the air duct assembly is installed in the shell and provided with an air supply duct located between the air inlet end and the air outlet end. The main control board is arranged between the air duct assembly and the shell; the fan assembly is arranged in the air supply duct and is electrically connected with the main control board; the ceramic heating body is arranged in the air supply duct and located on the air outlet side of the fan assembly, the ceramic heating body is provided with at least two wiring parts, and the wiring parts are electrically connected with the main control board. According to the technical scheme, the handheld hot air combs of various models can be produced with low cost, and production benefits are improved.

Description

Technical Field

[0001] The utility model relates to the field of hair care appliances, in particular to a handheld hot air comb. Background Art

[0002] Currently, some hot air combs have separate heads and handles, with the heating device, fan, and electronic control device housed inside the handle, allowing users to easily change to different comb heads to meet different usage needs. However, due to the large size of the heating wire heating structure, in order to reduce the size of the handle, the fan and heating device are usually installed directly inside the housing. This results in a complex housing structure, and when the housing shape needs to be changed, the coordination of the internal structure, such as the fan assembly and the ceramic heating element, with the housing needs to be considered. This results in high costs for re-molding the housing, making it costly to produce a variety of handheld hot air combs. Utility Model Content

[0003] The main purpose of the utility model is to provide a handheld hot air comb, aiming to reduce production costs.

[0004] To achieve the above-mentioned purpose, the handheld hot air comb proposed by the present invention comprises:

[0005] a housing having an air inlet end and an air outlet end opposite to each other;

[0006] an air duct assembly, mounted in the housing and having an air supply duct located between the air inlet end and the air outlet end;

[0007] A main control board is provided between the air duct assembly and the housing;

[0008] a fan assembly, disposed in the air supply duct and electrically connected to the main control board; and

[0009] A ceramic heating element is arranged in the air supply duct and located on the air outlet side of the fan assembly. The ceramic heating element has at least two wiring parts, and the wiring parts are electrically connected to the main control board.

[0010] Optionally, the air duct assembly includes an air duct tube and an insulation tube, the insulation tube is connected to the air duct tube to form the air supply duct together, the ceramic heating element is arranged in the insulation tube, and the fan assembly is arranged in the air duct tube.

[0011] Optionally, the air duct tube includes two separately formed cylindrical shells, the two cylindrical shells together enclose a portion of the air supply duct, and the fan assembly is arranged between the two cylindrical shells.

[0012] Optionally, the handheld hot air comb also includes a filter and a limiting sleeve, the filter cover is covered on the end of the air duct tube away from the insulation tube, and has a fixed flange covering the end surface of the insulation tube, the limiting sleeve is mounted on the end of the air duct tube away from the insulation tube, and has a limiting flange abutting against the side of the fixed flange away from the air duct tube.

[0013] Optionally, the ceramic heating element is annular and has two wiring parts and two heating parts connected between the two wiring parts, and the two heating parts are symmetrically arranged about the line connecting the two wiring parts.

[0014] Optionally, the handheld hot air comb further includes a connecting piece, which is rotatably mounted at the air outlet end of the housing, with the rotation axis of the connecting piece extending along the length direction of the air supply duct, and the connecting piece is used to connect an air outlet accessory.

[0015] Optionally, the handheld hot air comb further includes a drive motor, which is disposed between the fan assembly and the ceramic heating element and is transmission-connected to the connecting member, and is used to drive the connecting member to rotate.

[0016] Optionally, the handheld hot air comb further includes a motor housing, an outer peripheral surface of the motor housing is spaced from an inner wall surface of the air supply duct, and the drive motor is disposed in the motor housing.

[0017] Optionally, the motor housing has a conical air guide portion at one end close to the fan assembly.

[0018] Optionally, the handheld hot air comb further includes an air outlet cover, which covers the air outlet end, and is provided with a through hole and a plurality of air outlet holes surrounding the through hole, and the connecting member extends from the driving motor to the through hole.

[0019] Optionally, the handheld hot air comb further includes an air outlet accessory, which is detachably mounted on the air outlet end. A plurality of comb teeth and a plurality of air flow outlets are provided on the circumference of the air outlet accessory, and the air flow outlets are connected to the air supply duct.

[0020] The beneficial effect of the present invention is that: by arranging an air duct assembly in the shell, the air duct assembly is used to form an air supply duct and install a fan assembly and a ceramic heating element. During production, the fan assembly and the ceramic heating element can be first installed in the air duct assembly to form a whole, and then the air duct assembly and the shell are assembled and fixed. In this way, there is no direct assembly relationship between the fan assembly and the ceramic heating element and the shell, which can reduce the influence of the shell structure shape on the internal components such as the fan assembly and the ceramic heating element. Moreover, compared with electric heating wires, ceramic heating elements have high heating efficiency. By reducing the size of the ceramic heating element, the space occupied by the ceramic heating element in the air duct assembly can be reduced, thereby reducing the overall size of the fan assembly, the ceramic heating element and the air duct assembly after assembly, so that the shell has a larger design space. That is, when the shell shape needs to be changed during production, the restrictions of the internal structure such as the fan assembly and the ceramic heating element on the shell structure shape can be reduced, so that the shell has a larger design space, and there is no need to consider the assembly structure of the shell, the fan assembly and the ceramic heating element. The shell structure can be simplified, the shell re-mold cost can be reduced, and a variety of hand-held hot air combs with different shapes can be produced at a lower cost, thereby improving production efficiency. 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 This is a structural diagram of an embodiment of a handheld hot air comb of the present utility model;

[0023] Figure 2 for Figure 1 a cross-sectional view of a handheld hot air comb;

[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0026] Figure 5 for Figure 2 Enlarged view of point C in the middle;

[0027] Figure 6 for Figure 1 Exploded image of a handheld hot air comb;

[0028] Figure 7 for Figure 6Schematic diagram of the structure of the ceramic heating element;

[0029] Figure 8 for Figure 1 Schematic diagram of the structure of the center air outlet accessories.

[0030] Description of Figure Numbers:

[0031] 10. Outer casing; 11. Air inlet end; 12. Air outlet end; 20. Air duct assembly; 201. Air supply duct; 21. Air duct tube; 211. Tube shell; 22. Insulation tube; 31. Ceramic heating element; 311. Wiring part; 312. Heating part; 313. Ventilation slot; 32. Main control board; 33. Fan assembly; 40. Connector; 51. Drive motor; 52. Motor casing; 521. Conical guide part; 522. Fixed protrusion; 61. Limiting sleeve; 611. Limiting flange; 62. Filter; 621. Fixed flange; 622. Filter part; 70. Air outlet cover; 71. Air outlet hole; 72. Through hole; 80. Air outlet accessories; 81. Comb teeth; 82. Air flow outlet; 83. Sleeve part; 84. Connecting part; 85. Air inlet channel.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] 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.

[0035] 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 throughout the 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 this 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.

[0036] The utility model provides a handheld hot air comb.

[0037] In the embodiment of the present utility model, Figures 1 to 8 As shown, the handheld hot air comb includes a shell 10, an air duct assembly 20, a main control board 32, a fan assembly 33 and a ceramic heating element 31. The shell 10 has a relative air inlet end 11 and an air outlet end 12; the air duct assembly 20 is installed in the shell 10, and has an air supply duct 201 located between the air inlet end 11 and the air outlet end 12; the main control board 32 is arranged between the air duct assembly 20 and the shell 10; the fan assembly 33 is arranged in the air supply duct 201 and is electrically connected to the main control board 32; the ceramic heating element 31 is arranged in the air supply duct 201 and is located on the air outlet side of the fan assembly 33. The ceramic heating element 31 has at least two wiring parts 311, and the wiring parts 311 are electrically connected to the main control board 32.

[0038] Specifically, the ceramic heating element 31 is a heating structure as a whole, in which one wiring portion 311 is used to connect to the positive pole of the power supply, and the other wiring portion 311 is used to connect to the negative pole of the power supply. After the power is turned on, current flows through the ceramic heating element 31, thereby converting electrical energy into thermal energy and transferring the heat to the surface of the ceramic heating element 31. When air flows through the ceramic heating element 31, the airflow and the ceramic heating element 31 can exchange heat, thereby heating the airflow flowing through the ceramic heating element 31. Compared with electric heating wires, the ceramic heating element 31 has a high heating efficiency, which can make the size of the ceramic heating element 31 smaller, thereby reducing the space occupied by the ceramic heating element 31 in the handheld hot air comb. Moreover, the ceramic heating element 31 will not melt even if used for a long time, and has a longer service life.

[0039] When the fan assembly 33 is in operation, it can drive airflow from the air inlet end 11 of the housing 10 into the air supply duct 201, and then be delivered from the air outlet end 12 of the housing 10 after passing through the ceramic heating element 31. When in use, the airflow blown out from the air outlet end 12 can be used directly to dry clothes or dry / comb hair, etc.; or an air outlet accessory 80 such as a nozzle can be installed on the air outlet end 12 of the housing 10 for use.

[0040] The technical solution of the present invention is to set an air duct assembly 20 in the housing 10, use the air duct assembly 20 to form an air supply duct 201 and install the fan assembly 33 and the ceramic heating element 31. During production, the fan assembly 33 and the ceramic heating element 31 can be first installed in the air duct assembly 20 to form a whole, and then the air duct assembly 20 and the housing 10 are assembled and fixed. In this way, there is no direct assembly relationship between the fan assembly 33 and the ceramic heating element 31 and the housing 10, which can reduce the impact of the structural shape of the housing 10 on the internal components such as the fan assembly 33 and the ceramic heating element 31. Moreover, compared with the electric heating wire, the ceramic heating element 31 has a high heating efficiency. By reducing the size of the ceramic heating element 31, the space occupied by the ceramic heating element 31 in the air duct assembly 20 can be reduced, thereby reducing the overall size of the fan assembly 33, the ceramic heating element 31 and the air duct assembly 20 after assembly, so that the housing 10 has a larger design space. That is, when the shape of the shell 10 needs to be changed during the production process, the restrictions on the structural shape of the shell 10 caused by the internal structures such as the fan assembly 33 and the ceramic heating element 31 can be reduced, so that the shell 10 has a larger design space, and there is no need to consider the assembly structure of the shell 10 and the fan assembly 33 and the ceramic heating element 31. The structure of the shell 10 can be simplified, the cost of remolding the shell 10 can be reduced, and a variety of handheld hot air combs with different shapes can be produced at a lower cost, thereby improving production efficiency.

[0041] In some embodiments, the air duct assembly 20 includes an air duct tube 21 and an insulation tube 22. The insulation tube 22 is docked with the air duct tube 21 to jointly form an air supply duct 201. The ceramic heating element 31 is arranged in the insulation tube 22, and the fan assembly 33 is arranged in the air duct tube 21. Specifically, the insulation tube 22 and the air duct tube 21 are formed separately. During installation, after the ceramic heating element 31 is installed in the insulation tube 22 and the fan assembly 33 is installed in the air duct tube 21, the air duct tube 21 and the insulation tube 22 are docked and assembled. This simplifies the assembly process of the fan assembly 33 and the ceramic heating element 31, which is conducive to improving assembly efficiency. Among them, the insulation tube 22 can be made of materials such as ceramic or mica. The air duct tube 21 and the insulation tube 22 are plug-fitted or fixed by flanges and screws.

[0042] In some embodiments, the air duct tube 21 includes two cylindrical shells 211 formed separately, and the two cylindrical shells 211 together enclose a portion of the air supply duct 201, and the fan assembly 33 is arranged between the two cylindrical shells 211. Specifically, the cylindrical shells 211 are roughly semi-cylindrical, and form a cylindrical shape when the two cylindrical shells 211 are pieced together. In this way, during installation, the fan assembly 33 can be placed in one of the cylindrical shells 211 first, and then the two cylindrical shells 211 are assembled together, which facilitates the installation of the fan assembly 33. Among them, the two cylindrical shells 211 are snap-fitted or connected by screws. Of course, in other embodiments, the air duct tube 21 can also be set to be an integrated cylindrical shape.

[0043] In some embodiments, the handheld hot air comb further includes a filter 62 and a limiting sleeve 61. The filter 62 covers the end of the air duct tube 21 away from the heat-insulating tube 22 and has a fixed flange 621 covering the end surface of the heat-insulating tube 22. The limiting sleeve 61 is mounted on the end of the air duct tube 21 away from the heat-insulating tube 22 and has a limiting flange 611 abutting against the side of the fixed flange 621 facing away from the air duct tube 21. Specifically, the limiting flange 611 is provided to protrude relative to the inner wall surface of the limiting sleeve 61. The filter 62 further includes a filter portion 622. The fixed flange 621 is provided around the periphery of the filter portion 622. The filter portion 622 has a plurality of mesh holes. The filter portion 622 is exposed at the air inlet end 11 through the limiting sleeve 61, allowing airflow to pass through the filter portion 622 and flow into the air supply duct 201. This arrangement facilitates the installation of the filter 62 and ensures that the filter 62 is securely installed. In the embodiment where the air duct tube 21 includes two tube shells 211 , the two tube shells 211 may be further fixed by a limiting sleeve 61 .

[0044] In some embodiments, the ceramic heating element 31 is annular and has two connecting parts 311 and two heating parts 312 connected between the two connecting parts 311. The two heating parts 312 are symmetrically arranged about the line connecting the two connecting parts 311. That is, after the power is turned on, the current flows through the two heating parts 312, thereby converting the electrical energy into thermal energy. When an airflow flows through the surface of the heating part 312, the airflow can be heat-exchanged with the heating part 312, thereby heating the airflow flowing through the ceramic heating element 31. By arranging the two heating parts 312 symmetrically about the line connecting the two connecting parts 311, the length and cross-section of the two heating parts 312 can be made to be roughly the same. When the current is passed through, the two heating parts 312 can be heated evenly, so that the airflow in the air outlet duct is heated evenly, thereby improving the heat exchange effect.

[0045] Optionally, the heating portion 312 is bent in multiple sections in the circumferential direction of the ceramic heating element 31 to form multiple ventilation slots 313 on both the inner and outer sides of the heating portion 312. The ventilation slots 313 are arranged to pass through at both ends in the axial direction of the ceramic heating element 31. This can increase the surface area of ​​the heating portion 312, thereby improving the heat exchange efficiency. In other embodiments, the heating portion 312 is provided with multiple through holes 72, each of which is arranged to pass through at both ends in the axial direction of the ceramic heating element 31.

[0046] Of course, in other embodiments, the ceramic heating element 31 includes an inner ring portion, an outer ring portion with a spacer ring disposed outside the inner ring portion, and multiple connecting portions (not shown) connecting the inner and outer ring portions. The multiple connecting portions are spaced apart circumferentially around the inner ring portion, and heat exchange holes are formed between any two adjacent connecting portions. This increases the surface area of ​​the ceramic heating element 31 and improves heat exchange efficiency.

[0047] Optionally, the ceramic heating element 31 is a silicon carbide ceramic heating element. Specifically, the silicon carbide ceramic heating element is made of silicon carbide ceramic material. By adopting the silicon carbide ceramic heating element as the ceramic heating element 31, the heating efficiency of the ceramic heating element 31 can be improved and the heating rate can be increased. Among them, the silicon carbide ceramic heating element can use silicon carbide powder as the main sintering phase raw material and mix it with one or more conductive phase raw materials of titanium nitride powder, zirconium nitride powder, titanium carbonitride powder, titanium carbide powder, zirconium carbide powder, thallium carbide powder, hafnium carbide powder, titanium boride powder, zirconium boride powder, molybdenum silicide powder and tungsten carbide powder, and then shape and sinter it according to the designed shape. For example, silicon carbide powder, yttrium oxide powder, aluminum oxide powder and titanium boride powder can be uniformly mixed in a certain mass ratio, and then water is added as a solvent, and the mixture is uniformly mixed using a ball mill, and then spray-dried. The dried powder is heated and mixed with paraffin wax in a certain mass ratio, and poured into a hot die casting machine to complete hot die casting. After the green body is dried, it is placed in a sintering furnace for sintering to obtain a silicon carbide ceramic heating element. Of course, in other embodiments, zirconium oxide, aluminum oxide, yttrium oxide, silicon oxide or silicon nitride can also be used as the main sintering phase raw materials.

[0048] In some embodiments, the handheld hot air comb further includes a connector 40, which is rotatably mounted at the air outlet end 12 of the housing 10. The axis of rotation of the connector 40 extends along the length of the air supply duct 201. The connector 40 is used to connect to an air outlet accessory 80 (e.g., a nozzle). When the air outlet accessory 80 is mounted on the air outlet end 12, the channel within the air outlet accessory 80 communicates with the air supply duct 201 at the air outlet end 12. This means that airflow from the air outlet end 12 can enter the channel of the air outlet accessory 80 and then be blown out from the airflow outlet 82 of the air outlet accessory 80. This allows different air outlet types to be achieved through different air outlet accessories 80. The air outlet accessory 80 is connected to the connector 40, and the connector 40 can drive the air outlet accessory 80 to rotate relative to the housing 10 and the air duct assembly 20. This allows the user to adjust the angle of use of the air outlet accessory 80 and facilitate operations such as curling hair. Of course, in other embodiments, the connector 40 can also be fixed (i.e., non-rotatable) to the air outlet end 12.

[0049] In some embodiments, the handheld hot air comb further includes a drive motor 51, which is disposed between the fan assembly 33 and the ceramic heating element 31 and is in transmission connection with the connector 40. The drive motor 51 is used to drive the connector 40 to rotate. That is, when in use, the connector 40 can be driven by the drive motor 51 to rotate relative to the housing 10 and the air duct assembly 20. When the air outlet accessory 80 is installed on the connector 40, the air outlet accessory 80 can be driven to rotate together. For example, when the air outlet accessory 80 is a comb with comb teeth 81 on the outer circumference, hair combing can be achieved by driving the air outlet accessory 80 to rotate. For example, when the air outlet accessory 80 is a cylindrical component with a plurality of air outlets on the outer circumference, hair curling can be achieved by driving the air outlet accessory 80 to rotate and utilizing the hot air flow. Of course, in other embodiments, the drive motor 51 may not be provided, that is, the connector 40 is only used as a passive rotating component (that is, the user is required to manually rotate it to adjust the angle of the air outlet accessory 80, etc.).

[0050] Optionally, the handheld hot air comb further comprises an air outlet cover 70, which covers the air outlet end 12. The air outlet cover 70 is provided with a through hole 72 and a plurality of air outlet holes 71 surrounding the through hole 72. The connector 40 extends from the output end of the drive motor 51 to the through hole 72. Specifically, the air outlet hole 71 is connected to the air supply duct 201. The air outlet accessory 80 comprises a sleeve portion 83, a connector portion 84 located within the sleeve portion 83, and an air inlet channel 85 located between the sleeve portion 83 and the connector portion 84. When the air outlet accessory 80 is mounted on the air outlet end 12, the sleeve portion 83 is rotatably mounted on the outside of the air outlet cover 70. The connector portion 84 corresponds to the through hole 72 and is connected to the connector 40. The airflow blown out from the air outlet end 12 can enter the air outlet accessory 80 through the air inlet channel 85 and then be blown out from the air flow outlet 82 of the air outlet accessory 80. In this way, the connecting member 40 can be connected to the rotating shaft of the drive motor 51, which can simplify the structure of the drive motor 51 and the connecting member 40. Of course, in other embodiments, the connecting member 40 can also be configured as a cylinder and rotatably mounted on the air outlet end 12, and the drive motor 51 is connected to the connecting member 40 through a transmission mechanism (for example, including a driving gear provided on the motor shaft and transmission teeth provided on the inner circumference of the connecting member 40).

[0051] Optionally, the handheld hot air comb also includes an air outlet accessory 80, which is detachably mounted on the air outlet end 12. A plurality of comb teeth 81 and a plurality of air flow outlets 82 are provided on the peripheral side of the air outlet accessory 80. The air flow outlet 82 is connected to the air supply duct 201, that is, hair combing can be achieved by driving the air outlet accessory 80 to rotate, which is convenient for users to use.

[0052] In some embodiments, the handheld hot air comb further includes a motor housing 52, the outer circumference of the motor housing 52 being spaced apart from the inner wall of the air supply duct 201, and the drive motor 51 being disposed within the motor housing 52; the motor housing 52 having a tapered guide portion 521 at one end thereof adjacent to the fan assembly 33. Specifically, fixed protrusions 522 are provided on opposite sides of the motor housing 52, the fixed protrusions 522 being protruding relative to the outer circumference of the motor housing 52, and the fixed protrusions 522 being connected to the inner wall of the air duct cylinder 21 so as to space the outer circumference of the motor housing 52 apart from the inner wall of the air supply duct 201. The outer diameter of the tapered guide portion 521 gradually decreases in the direction approaching the fan assembly 33, thereby providing a better air guide effect, reducing the turbulence caused by the airflow directly hitting the drive motor 51 or the motor housing 52, and improving the airflow effect.

[0053] 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 specification 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 handheld hot air comb, characterized in that: include: a housing having an air inlet end and an air outlet end opposite to each other; an air duct assembly, mounted in the housing and having an air supply duct located between the air inlet end and the air outlet end; A main control board is provided between the air duct assembly and the housing; A fan assembly is provided in the air supply duct and is electrically connected to the main control board; as well as A ceramic heating element is arranged in the air supply duct and located on the air outlet side of the fan assembly. The ceramic heating element has at least two wiring parts, and the wiring parts are electrically connected to the main control board.

2. The handheld hot air comb according to claim 1, characterized in that: The air duct assembly includes an air duct tube and an insulation tube. The insulation tube and the air duct tube are connected to form the air supply duct together. The ceramic heating element is arranged in the insulation tube. The fan assembly is arranged in the air duct tube.

3. The handheld hot air comb according to claim 2, characterized in that: The air duct cylinder includes two separately formed cylinder shells, the two cylinder shells together enclose a portion of the air supply duct, and the fan assembly is arranged between the two cylinder shells.

4. The handheld hot air comb according to claim 2, characterized in that: The handheld hot air comb also includes a filter and a limiting sleeve. The filter covers the end of the air duct tube away from the insulation tube and has a fixed flange covering the end surface of the insulation tube. The limiting sleeve is sleeved on the end of the air duct tube away from the insulation tube and has a limiting flange abutting against the side of the fixed flange facing away from the air duct tube.

5. The handheld hot air comb according to claim 1, wherein: The ceramic heating element is annular and has two connecting parts and two heating parts connected between the two connecting parts. The two heating parts are symmetrically arranged about the line connecting the two connecting parts.

6. The handheld hot air comb according to any one of claims 1 to 5, characterized in that: The handheld hot air comb also includes a connecting piece, which is rotatably mounted at the air outlet end of the shell. The rotation axis of the connecting piece extends along the length direction of the air supply duct, and the connecting piece is used to connect the air outlet accessories.

7. The handheld hot air comb according to claim 6, characterized in that: The handheld hot air comb further comprises a driving motor, which is arranged between the fan assembly and the ceramic heating element and is transmission-connected to the connecting member. The driving motor is used to drive the connecting member to rotate.

8. The handheld hot air comb according to claim 7, characterized in that: The handheld hot air comb further comprises a motor housing, the outer peripheral surface of the motor housing is spaced apart from the inner wall surface of the air supply duct, and the driving motor is arranged in the motor housing; One end of the motor housing close to the fan assembly has a conical air guide portion.

9. The handheld hot air comb according to claim 7, characterized in that: The handheld hot air comb further comprises an air outlet cover, which covers the air outlet end, is provided with a through hole and a plurality of air outlet holes surrounding the through hole, and the connecting member extends from the driving motor to the through hole.

10. The handheld hot air comb according to claim 1, wherein: The handheld hot air comb also includes an air outlet accessory, which is detachably mounted on the air outlet end. A plurality of comb teeth and a plurality of air flow outlets are provided on the circumference of the air outlet accessory, and the air flow outlets are connected to the air supply duct.

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