Patent Publication Number: US-2023137858-A1

Title: Styling comb

Description:
TECHNICAL FIELD 
     The present invention relates to the field of hairdressing tools, and in particular to a styling comb. 
     BACKGROUND 
     At present, combs are indispensable daily necessities in people’s life. However, conventional combs can be used only for combing hair, and have relatively simple functionality and generally undesirable hair styling effect, which fails to meet the different use needs of users. 
     SUMMARY 
     The primary objective of the present invention is to propose a styling comb intended to enhance the capability of the styling comb to meet different use needs. 
     In order to realize the foregoing objective, the styling comb proposed by the present invention includes:
     a handle;   a hot comb head, the hot comb head provided with a heat-generating component and a thermally-conductive comb tooth component, the thermally-conductive comb tooth component thermally conductively connected to the heat-generating component, and the thermally-conductive comb tooth component used for combing hair; and   a cold comb head, the cold comb head provided with a refrigeration component and a thermally-conductive comb tooth component, the thermally-conductive comb tooth component thermally conductively connected to the refrigeration component, the thermally-conductive comb tooth component used for combing hair;   the cold comb head and the hot comb head alternatively and removably mounted on the handle.   

     Optionally, the handle is provided with an sensor, one of the hot comb head and the cold comb head is provided with a triggering member corresponding to the sensor, and the triggering member is used to trigger the sensor. 
     Optionally, the sensor is a Hall sensor, and the triggering member is a magnet. 
     Optionally, the refrigeration component includes a semiconductor refrigeration chip and a heat dissipation component, the heat dissipation component is mounted on the hot end of the semiconductor refrigeration chip, the thermally-conductive comb tooth component includes a thermally-conductive base and multiple thermally-conductive teeth, the thermally-conductive base is mounted on the cold end of the semiconductor refrigeration chip, and the multiple thermally-conductive teeth are disposed on the side of the thermally-conductive base facing away from the semiconductor refrigeration chip. 
     Optionally, the cold comb head further includes a first comb base, the first comb base has an air inlet, an air outlet and a heat dissipation air duct formed between the air inlet and the air outlet, the heat dissipation component includes a heat sink and a heat dissipation fan, the heat sink is connected to the hot end of the semiconductor refrigeration chip, the heat sink and the heat dissipation fan are disposed in the heat dissipation air duct, and the air incoming side or the air outgoing side of the heat dissipation fan faces the heat sink. 
     Optionally, the heat sink includes a heat dissipation base and a heat dissipation fin disposed on the heat dissipation base, the air outgoing side of the heat dissipation fan is disposed facing the heat dissipation fin, and the air incoming side of the heat dissipation fan communicates with the air inlet; and/or the air inlet and the thermally-conductive comb tooth component are separately disposed on two opposite sides of the first comb base, and both two opposite sides, of the first comb base, between the air inlet and the thermally-conductive comb tooth component are provided with the air outlet. 
     Optionally, the thermally-conductive comb tooth component includes a thermally-conductive base and multiple thermally-conductive teeth, the thermally-conductive base is thermally conductively connected to the heat-generating component, the multiple thermally-conductive teeth are disposed on the side of the thermally-conductive base facing away from the heat-generating component, the hot comb head further includes a comb tooth sleeve, the comb tooth sleeve is at least sleeved on an end of the thermally-conductive tooth, and the thermally-conductive tooth has at least two opposite sides exposed to the outside; and/or the hot comb head includes a second comb base, two said heat-generating components and two said thermally-conductive comb tooth components, the two said thermally-conductive comb tooth components are separately disposed on two opposite sides of the second comb base, and each of the heat-generating components is thermally conductively connected to one of the thermally-conductive comb tooth components correspondingly. 
     Optionally, the handle includes a handle shell and a snap component disposed in the handle shell, one end of the handle shell is provided with an assembly port, the snap component is exposed from the assembly port, the cold comb head and/or the hot comb head are provided with a plug hole, the wall of the plug hole is provided with a snap groove, and the snap component is plugged into the plug hole and snapped into the snap groove. 
     Optionally, the snap component includes a plug member, a snap member and an unlocking press member, the plug member is fixed in the handle shell and exposed from the assembly port, the plug member is plugged into the plug hole, the handle shell is provided with a mounting hole, the unlocking press member is movably mounted in the mounting hole, the snap member is movably mounted in the handle shell in the movement direction of the unlocking press member and is elastically snapped into the snap groove, and the unlocking press member is used to drive the snap member to move in the direction away from the snap groove. 
     Optionally, the outer peripheral face of the plug member is provided with a clearance groove, and the snap member is movably mounted in the clearance groove; and/or the snap component further includes an elastic member, and the elastic member elastically abuts against the side of the snap member facing away from the unlocking press member; and/or the snap component includes two said snap members and two said unlocking press members, the two said snap members are separately disposed on two opposite sides of the plug member, each of the unlocking press members is correspondingly disposed on the side where one of the snap members faces away from the other snap member, and the handle shell is provided with the mounting hole corresponding to each of the unlocking press members; and/or the handle shell is provided therein with a guide column extending in the movement direction of the snap member, and the snap member is slidably mounted on the guide column. 
     The styling comb in the technical solution of the present invention is configured with a cold comb head and a hot comb head, where the hot comb head is provided thereon with a heat-generating component and a thermally-conductive comb tooth component thermally conductively connected to the heat-generating component. In this way, when the heat-generating component is not supplied with current, the thermally-conductive comb tooth component can be used for performing conventional hair combing. When the heat-generating component is supplied with current, the heat-generating component can emit heat, and the energy generated by the heat-generating component can be conducted to the thermally-conductive comb tooth component, and the thermally-conductive comb tooth component can be utilized for styling such as hair straightening and curling. Meanwhile, the cold comb head is provided thereon with a refrigeration component and a thermally-conductive comb tooth component thermally conductively connected to the refrigeration component. In this way, when the refrigeration component is not supplied with current, the thermally-conductive comb tooth component can be used for performing conventional hair combing. When the refrigeration component is supplied with current, the refrigeration component can be used for performing refrigeration, and at this time, the energy generated by the refrigeration component can be conducted to the thermally-conductive comb tooth component. When the temperature of the thermally-conductive comb tooth component drops to a lower temperature, the moisture in the air can be condensed on the thermally-conductive comb tooth component, so that the hair is softer and smoother when combed with the thermally-conductive comb tooth component, achieving the hair care function, and enhancing the hair care effect of the styling comb. As the cold comb head and the hot comb head are alternatively and removably mounted on the handle, it is possible to select, based on the a user’s styling need, a corresponding comb head to be mounted on the handle for use, improving the capability of the styling comb to meet different use needs. 
    
    
     
       DESCRIPTION OF DRAWINGS 
       In order to describe more clearly the technical solution in the embodiments of the present invention or in the prior art, the following briefly describes the accompanying drawings required for the description of the embodiments or the prior art. Apparently, the accompanying drawings in the following description show merely some embodiments of the present invention, and a person of ordinary skill in the art may still derive other drawings from the structures shown in these accompanying drawings without creative efforts. 
         FIG.  1    is a schematic diagram of structures of a handle, a cold comb head and a hot comb head in an embodiment of the styling comb of the present invention; 
         FIG.  2    is a schematic diagram of a structure where the handle and the cold comb head in  FIG.  1    are assembled together; 
         FIG.  3    is an exploded view of the cold comb head in  FIG.  1   ; 
         FIG.  4    is a schematic diagram of a structure where the handle and the hot comb head in  FIG.  1    are assembled together; 
         FIG.  5    is an exploded view of the hot comb head in  FIG.  1   ; 
         FIG.  6    is an enlarged view at place A in  FIG.  5   ; 
         FIG.  7    is an enlarged view at place B in  FIG.  5   ; 
         FIG.  8    is a sectional view when the handle and the cold comb head in  FIG.  1    are assembled together; 
         FIG.  9    is an enlarged view at place C in  FIG.  8   ; 
         FIG.  10    is a sectional view when the handle and the hot comb head in  FIG.  1    are assembled together; 
         FIG.  11    is an enlarged view at place D in  FIG.  10   ; 
         FIG.  12    is a schematic diagram of structures of the plug member and snap member in the handle in  FIG.  1   ; 
         FIG.  13    is a schematic diagram of a structure of a connection holder in the cold comb head and the hot comb head in  FIG.  1   . 
     
    
    
     DESCRIPTION OF REFERENCE NUMBERS 
       10 . handle;  11 . handle shell;  111 . mounting hole;  112 . guide column;  12 . plug member;  121 . clearance groove;  122 . mounting through hole;  123 . limit boss;  124 . plug column;  125 . convex foolproof rib;  13 . snap member;  14 . unlocking press member;  15 . elastic member;  20 . cold comb head;  201 . air inlet;  202 . air outlet;  21 . first comb base;  211 . front shell;  212 . rear shell;  23 . semiconductor refrigeration chip;  24 . heat sink;  241 . heat dissipation base;  242 . heat dissipation fin;  25 . heat dissipation fan;  27 . thermally-conductive comb tooth component;  271 . thermally-conductive base;  272 . thermally-conductive tooth;  30 . hot comb head;  31 . second comb base;  311 . comb tooth sleeve;  312 . clearance opening;  32 . mounting shell;  321 . first casing;  322 . second casing;  323 . mounting slot;  33 . heat-generating component;  331 . heat-emitting member;  332 . fixing member;  333 . elastic gasket;  34 . thermally-conductive comb tooth component;  341 . thermally-conductive base;  342 . thermally-conductive tooth;  401 . plug hole;  402 . snap groove;  403 . limit portion;  404 . limit hole;  405 . insertion hole;  406 . foolproof gap;  41 . connection holder;  42 . end shell;  43 . electrically-conductive probe;  44 . comb tooth bar;  441 . connection bar;  442 . tooth portion. 
     The realization of the objective, functional features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. 
     DETAILED DESCRIPTION 
     The following describes clearly and completely the technical solution in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are merely some but not all of the embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope claimed by the present invention. 
     It should be noted that if there are directional indications (such as upper, lower, left, right, front, rear, and the like) involved in the embodiments of the present invention, these directional indications are only intended to explain a relative positional relationship between and movement of various components under a certain posture (as shown in the figure). If this specific posture changes, these directional indications also change accordingly. 
     In addition, if there are descriptions involving “first”, “second”, and the like in the embodiments of the present invention, these descriptions of “first”, “second”, and the like are only intended for the descriptive purpose, and cannot be understood as indicating or implying the relative importance thereof or implicitly indicating the number of indicated technical features. Thus, the features defined with “first”, “second”, and the like may explicitly or implicitly include at least one such feature. In addition, the meaning of “and/or” appearing herein includes three parallel solutions, and for example, “A and/or B” includes solution A, solution B, or a solution where both A and B satisfy. In addition, combinations of the technical solutions between various embodiments with each other may be possible on the premise that it can be implemented by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions is unavailable and does not fall within the scope claimed by the present invention. 
     The present invention proposes a styling comb. 
     In the embodiment of the present invention, with reference to  FIGS.  1  to  5   , the styling comb includes a handle  10 , a hot comb head  30  and a cold comb head  20 , the hot comb head  30  is provided with a heat-generating component  33  and a thermally-conductive comb tooth component  34 , the thermally-conductive comb tooth component  34  is thermally conductively connected to the heat-generating component  33 , and the thermally-conductive comb tooth component  34  is used for combing hair. The cold comb head  20  is provided with a refrigeration component and a thermally-conductive comb tooth component  27 . The thermally-conductive comb tooth component  27  is thermally conductively connected to the refrigeration component, and the thermally-conductive comb tooth component  27  is used for combing hair. The cold comb head  20  and the hot comb head  30  are alternatively and removably mounted on the handle  10 . 
     In this embodiment, the handle  10  is used for a user to hold, the handle  10  is provided therein with a circuit device, and the thermally-conductive comb tooth component  34  is used for combing hair. When the hot comb head  30  is mounted on the handle  10 , the heat-generating component  33  is electrically connected to the circuit device. When powered on, the heat-generating component  33  can emit heat, and the energy generated by the heat-generating component  33  can be conducted to the thermally-conductive comb tooth component  34 , so that when the thermally-conductive comb tooth component  34  is utilized for combing hair, the energy can be conducted to the hair to perform straight hair styling or curly hair styling. 
     The thermally-conductive comb tooth component  27  is used for combing hair. When the cold comb head  20  is mounted on the handle  10 , the refrigeration component is electrically connected to the circuit device. When powered on, the refrigeration component can perform refrigeration, and the energy generated by the refrigeration component can be conducted to the thermally-conductive comb tooth component  27 . When the temperature of the thermally-conductive comb tooth component  27  drops to a lower temperature, the moisture in the air can be condensed on the thermally-conductive comb tooth component  27 , so that the hair is softer and smoother when combed with the thermally-conductive comb tooth component  27 , achieving the hair care function. 
     The styling comb in the technical solution of the present invention is configured with a cold comb head  20  and a hot comb head  30 , where the hot comb head  30  is provided thereon with a heat-generating component  33  and a thermally-conductive comb tooth component  34  thermally conductively connected to the heat-generating component  33 . In this way, when the heat-generating component  33  is not supplied with current, the thermally-conductive comb tooth component  34  can be used for performing conventional hair combing. When the heat-generating component  33  is supplied with current, the heat-generating component  33  can emit heat, the energy generated by the heat-generating component  33  can be conducted to the thermally-conductive comb tooth component  34 , and the thermally-conductive comb tooth component  34  can be utilized for styling such as hair straightening and curling. Meanwhile, the cold comb head is provided thereon with a refrigeration component and a thermally-conductive comb tooth component  27  thermally conductively connected to the refrigeration component. In this way, when the refrigeration component is not supplied with current, conventional hair combing can be performed with the thermally-conductive comb tooth component  27 . When the refrigeration component is supplied with current, the refrigeration component can be used for performing refrigeration, and at this time, the energy generated by the refrigeration component can be conducted to the thermally-conductive comb tooth component  27 . When the temperature of the thermally-conductive comb tooth component  27  drops to a lower temperature, the moisture in the air can be condensed on the thermally-conductive comb tooth component  27 , so that the hair is softer and smoother when combed with the thermally-conductive comb tooth component  27 , achieving the hair care function, and enhancing the hair care effect of the styling comb. As the cold comb head  20  and the hot comb head  30  are alternatively and removably mounted on the handle  10 , it is possible to select, based on a user’s styling need, a corresponding comb head to be mounted on the handle  10  for use, improving the capability of the styling comb to meet different use needs. 
     Moreover, by making the cold comb head  20  and the hot comb head  30   removable, in the case that any of the hot comb head  30 , the cold comb head  20  or the handle  10  are damaged, the user only needs to replace the damaged part and keep the part that can work properly. In this manner, it is possible to reduce the replacement cost and save resources for users in comparison with the case of replacing the entire styling comb. Compared with the entire styling comb, the sizes of the cold comb head  20  and the hot comb head  30  are smaller, occupying less space, facilitating collective storage, thereby greatly enhancing the convenience of the styling comb. 
     In an embodiment, the handle  10  is provided with an sensor, the sensor is electrically connected to the circuit device, one of the hot comb head  30  and the cold comb head  20  is provided with a triggering member corresponding to the sensor, and the triggering member is used to trigger the sensor. Specifically, the circuit device includes a controller, and the controller is electrically connected to the sensor. In this embodiment, the cold comb head  20  is provided with the triggering member, that is, when the cold comb head  20  is mounted on the handle  10 , the triggering member is able to trigger the sensor. At this time, the controller is thereby able to determine that the cold comb head  20  has been mounted on the handle  10 . As no sensor is disposed on the hot comb head  30 , the hot comb head  30  is unable to trigger the sensor when the hot comb head  30  is mounted on the handle  10 . At this time, the controller is thereby able to determine that the hot comb head  30  is mounted on the handle  10 . Such arrangement enable the controller in the handle  10  to identify and distinguish the cold comb head  20  and the hot comb head  30 , so as to output corresponding current and voltage for the cold comb head  20  and the hot comb head  30  separately, ensuring that the cold comb head  20  and the hot comb head  30  are each working more efficiently. 
     In an embodiment, the sensor is a Hall sensor, and the triggering member is a magnet. In this way, it is possible to make the structures of the sensor and the triggering member simple and reliable. Surely, in other embodiments, the sensor may also be a micro switch or the like. 
     With reference to  FIG.  2    and  FIG.  3   , in an embodiment, the refrigeration component includes a semiconductor refrigeration chip  23  and a heat dissipation component, the heat dissipation component is mounted on the hot end of the semiconductor refrigeration chip  23 , the thermally-conductive comb tooth component  27  includes a thermally-conductive base  271  and multiple thermally-conductive teeth  272 , the thermally-conductive base  271  is mounted on the cold end of the semiconductor refrigeration chip  23 , and the multiple thermally-conductive teeth  272  are disposed on the side of the thermally-conductive base  271  facing away from the semiconductor refrigeration chip  23 . In this way, using the semiconductor refrigeration chip  23  for performing refrigeration can avoid the situation that the semiconductor refrigeration chip  23  produces noise in the refrigeration process, thereby reducing the noise produced by the cold comb head  20  in the refrigeration process. Moreover, the semiconductor refrigeration chip  23  features free of refrigerant, small volume, light weight, and the like, which can simplify the structure of the cold comb head  20 , reduce the weight of the cold comb head  20 , and ensure reliable working and easy operation of the refrigeration component, and easy energy adjustment. The thermally-conductive teeth  272  may be welded or integrally formed on the thermally-conductive base  271 . Surely, in other embodiments, the refrigeration component may also be a magnetic refrigeration device or a thermoacoustic refrigeration device. 
     In an embodiment, multiple thermally-conductive teeth  272  are arranged in multiple rows (at least two rows) in the width direction of the thermally-conductive base  271 , and any two adjacent rows of thermally-conductive teeth  272  are arranged out of alignment. That is, in the length direction of the thermally-conductive base  271 , one thermally-conductive tooth  272  in any row is disposed at the gap between two adjacent thermally-conductive teeth  272  in the row adjacent thereto, that is, the hair bends through multiple rows of thermally-conductive teeth  272  during hair combing, so as to increase the contact area between the hair and each thermally-conductive tooth  272 , thereby ensuring that the hair is in full contact with each thermally-conductive tooth  272 . Surely, in other embodiments, multiple thermally-conductive teeth  272  may also be arranged in disorder. 
     In an embodiment, the thermally-conductive tooth  272  is a metal member, that is, the material for making the thermally-conductive tooth  272  is metal. For example, the material for making the thermally-conductive tooth  272  is aluminum, aluminum alloy, copper, copper alloy, stainless steel, or the like. In this way, it is possible to ensure better thermal conduction effect of the thermally-conductive tooth  272 . Surely, in other embodiments, the thermally-conductive tooth  272  may also be made of non-metallic material with good thermal conductivity. 
     In an embodiment, the cold comb head  20  further includes a first comb base  21 , the first comb base  21  has an air inlet  201 , an air outlet  202  and a heat dissipation air duct formed between the air inlet  201  and the air outlet  202 , the heat dissipation component includes a heat sink  24  and a heat dissipation fan  25 , the heat sink  24  is connected to the hot end of the semiconductor refrigeration chip  23 , the heat sink  24  and the heat dissipation fan  25  are disposed in the heat dissipation air duct, and the air incoming side or air outgoing side of the heat dissipation fan  25  faces the heat sink  24 . Specifically, the heat dissipation fan  25  is used to drive the external airflow to enter from the air inlet  201  and flow out from the air outlet  202  after passing through the heat sink  24 . In this way, by driving the external airflow to pass through the heat sink  24  by using the heat dissipation fan  25 , the energy of the heat sink  24  can be taken out, so that the heat sink  24  is able to dissipate the heat rapidly, thereby enhancing the heat dissipation efficiency of the heat sink  24 . Moreover, in this way, it is possible to prevent the heat dissipation component from being exposed to the outside, and protect the heat dissipation component in a better way. Surely, in other embodiments, the heat sink  24  may be disposed protruding to the outside of the first comb base  21 . 
     In an embodiment, the air outgoing side of the heat dissipation fan  25  is disposed facing the heat sink  24 , and the air incoming side of the heat dissipation fan  25  communicates with the air inlet  201 . That is, the heat sink  24  is disposed between the air outlet  202  and the air outgoing side of the heat dissipation fan  25 . The external airflow can be blown directly toward the heat sink  24  after being sucked in by the heat dissipation fan  25 , and finally flow out of the air outlet  202  automatically. In this way, it is possible to ensure that the external airflow can fully flow through the heat sink  24 , and to avoid disposing a sealed heat dissipation air duct structure in the first comb base  21 , thereby simplifying the structure of the first comb base  21 , and reducing costs. Surely, in other embodiments, the air incoming side of the heat dissipation fan  25  is disposed facing the heat sink  24 , and the air outgoing side of the heat dissipation fan  25  communicates with the air inlet  201 . 
     In an embodiment, the heat sink  24  includes a heat dissipation base  241  and a heat dissipation fin  242  disposed on the heat dissipation base  241 , the air outgoing side of the heat dissipation fan  25  is disposed facing the heat dissipation fin  242 , and the air incoming side of the heat dissipation fan  25  communicates with the air inlet  201 . Specifically, multiple heat dissipation fins  242  spaced at intervals are arranged on the heat dissipation base  241 , a heat exchange channel is formed between any two adjacent heat dissipation fins  242 , and the heat exchange channel communicates with the heat dissipation air duct. When the airflow entering from the air inlet  201  flows through the heat exchange channel, it is able to exchange heat with the heat dissipation fins  242 , thereby taking away the energy on the heat dissipation fins  242 . In this way, it is possible to increase the heat dissipation area of the heat sink  24  and enhance the heat dissipation effect of the heat sink  24 . Surely, in other embodiments, the heat sink  24  includes a heat dissipation base  241  and a heat dissipation column disposed on the heat dissipation base  241 . 
     In an embodiment, the air inlet  201  and the thermally-conductive comb tooth component  27  are separately disposed on two opposite sides of the first comb base  21 , and both two opposite sides, of the first comb base  21 , between the air inlet  201  and the thermally-conductive comb tooth component  27  are provided with the air outlet  202 . Specifically, the axis of the heat dissipation fan  25  extends in the direction where the air inlet  201  points to the thermally-conductive comb tooth component  27 . In this way, it is possible to allow the external airflow to flow directly toward the heat sink  24  after entering from the air inlet  201 , which can prevent the flow direction of the intake airflow from being changed, thus reducing intake airflow energy loss, and allowing more external airflow to directly flow toward the heat sink  24 , thereby enhancing the heat exchange effect of the heat sink  24 . By disposing the air outlet  202  on both two opposite sides, of the first comb base  21 , between the air inlet  201  and the thermally-conductive comb tooth component  27 , the airflow flowing toward the heat sink  24  can flow towards two opposite sides of the heat sink  24 , and flow out from the air outlet  202  on the two opposite sides of the first comb base  21 . In this way, it equates with an increase in the area of the air outlet  202 , so that the airflow after undergoing heat exchange can flow out from each air outlet  202  more rapidly, thereby speeding up heat dissipation. 
     In an embodiment, the styling comb further includes a dust-proof net, and the dust-proof net covers the air inlet  201 . In this way, it is possible to reduce the amount of dust entering the first comb base  21 , thereby reducing the failure rate of the refrigeration component. 
     In an embodiment, the first comb base  21  forms a region for mounting comb teeth on both two opposite sides of the thermally-conductive comb tooth component  27 , and the region for mounting comb teeth is provided with a comb tooth bar  44 . Specifically, the comb tooth bar  44  is an ordinary comb tooth bar  44 . The comb tooth bar  44  is primarily used for a user to comb hair and has no heating function. In this way, by disposing the comb tooth bar  44  on both two opposite sides of the thermally-conductive comb tooth component  27 , it is possible to increase the number of comb teeth on the cold comb head  20 , making it more convenient for a user to comb hair. Moreover, the comb tooth bar  44  can also play a better role in guiding hair to the thermally-conductive comb tooth component  27 , ensuring that the thermally-conductive comb tooth component  27  is full contact with the hair. 
     In an embodiment, the cold comb head  20  further includes at least two electrical-conductive probes  43 , the electrically-conductive probes  43  are mounted on the first comb base  21  and electrically connected to the refrigeration component, the circuit device includes a control circuit board and at least two electrically-conductive cartridges, each of the electrically-conductive cartridges is electrically connected to the control circuit board, and the electrically-conductive probes  43  are plugged with the electrically-conductive cartridges in a one-to-one correspondence. 
     Specifically, the cold comb head  20  further includes a connection circuit board disposed in the first comb base  21 , each of the electrically-conductive probes  43  is electrically connected to the connection circuit board, the refrigeration component is electrically connected to the connection circuit board, and the electrically-conductive probe  43  is in an interference fit with the electrically-conductive cartridge, that is, the electrically-conductive probe  43  is tightly fitted with the electrically-conductive cartridge. By disposing the electrically-conductive probe  43  on the cold comb head  20  and disposing the electrically-conductive cartridge on the handle  10 , the electrically-conductive probes  43  are plugged with the electrically-conductive cartridges in a one-to-one correspondence when the handle  10  and the first comb base  21  are mounted together, thus realizing electrical connection between the refrigeration component and the circuit device. In this way, the electrically-conductive probe  43  can be in a stable contact with the electrically-conductive cartridge, ensuring reliable electrical connection between the electrically-conductive probe  43  and the electrically-conductive cartridge. Surely, in other embodiments, the handle  10  may also be provided thereon with an electrically-conductive contact plate, and the cold comb head  20  is provided with an elastic ejector pin. When the handle  10  and the first comb base  21  are mounted together, the elastic ejector pin elastically abuts against the electrically-conductive contact plate. 
     In an embodiment, the first comb base  21  includes a front shell  211 , a rear shell  212 , a connection holder  41  and an end shell  42 , the front shell  211  and the rear shell  212  are connected in a limited manner between the connection holder  41  and the end shell  42 , the refrigeration component is mounted in the mounting chamber enclosed by the front shell  211  and the rear shell  212 , the thermally-conductive comb tooth component  27  is mounted in the front shell  211 , and the connection holder  41  is removably connected to the handle  10 . The front shell  211 , the rear shell  212 , the connection holder  41  and the end shell  42  are disposed separately. Such arrangement of assembling them together can simplify the difficulty of molding any one of the front shell  211 , the rear shell  212 , the connection holder  41  and the end shell  42 . In addition, even if one of the front shell  211 , the rear shell  212 , the connection holder  41  and the end shell  42  is defective during molding, the overall structure of the first comb base  21  will be less affected. 
     In an embodiment, the side of the end shell  42  facing away from the mounting shell  32  is provided with a hanging ring portion, the hanging ring portion is used for hanging on a hook, so that the styling comb or cold comb head  20  can be easily hung on a hook on the wall or other furniture. 
     With reference to  FIGS.  4  to  6   , in an embodiment, the thermally-conductive comb tooth component  34  includes a thermally-conductive base  341  and multiple thermally-conductive teeth  342 , the thermally-conductive base  341  is thermally conductively connected to the heat-generating component  33 , the multiple thermally-conductive teeth  342  are disposed on the side of the thermally-conductive base  341  facing away from the heat-generating component  33 , the hot comb head  30  further includes a comb tooth sleeve  311 , the comb tooth sleeve  311  is at least sleeved on an end of the thermally-conductive tooth  342 , and the thermally-conductive tooth  342  has at least two opposite sides exposed to the outside. 
     Specifically, one comb tooth sleeve  311  corresponding to each thermally-conductive tooth  342  is disposed outside of the hot comb head  30 , a clearance opening  312  is disposed at two opposite sides of the comb tooth portion  442 , the thermally-conductive tooth  342  is inserted into the comb tooth portion  442 , and two opposite sides of the thermally-conductive tooth  342  are exposed from the clearance opening  312  to the outside. It should be understood that the end of the comb tooth is prone to contacting the user’s scalp when it is used for combing hair. If no comb tooth sleeve  311  is disposed on an end of the thermally-conductive tooth  342 , the thermally-conductive tooth  342  will directly contact the user’s scalp, which is easy to scald the user. By disposing the comb tooth sleeve  311 , and sleeving the comb tooth sleeve  311  at least on an end of the thermally-conductive tooth  342 , the thermally-conductive tooth  342  can be separated from the user’s scalp through the comb tooth sleeve  311  when hair straightening or curling is performed, preventing the thermally-conductive tooth  342  from directly contacting the user’s scalp and thus scalding the user. The material for making the thermally-conductive tooth  342  may be metal or another non-metallic material with good thermal conduction effect. The thermally-conductive tooth  342  may be welded or integrally formed on the thermally-conductive base  341 . Surely, in other embodiments, the comb tooth sleeve  311  may also be sleeved on an end of the thermally-conductive tooth  342 . In addition, in other embodiments, the thermally-conductive tooth  342  includes a thermally-conductive portion and a heat-insulating end that are integrally connected, the thermally-conductive portion is thermally conductively connected to the heat-generating component  33 , and the heat-insulating end is used for contacting with the user. 
     In an embodiment, the hot comb head  30  includes a second comb base  31 , and the heat-generating component  33  is disposed in the second comb base  31  and protrudes to the outside of the second comb base  31 . 
     In an embodiment, the hot comb head  30  includes a second comb base  31 , two heat-generating components  33  and two thermally-conductive comb tooth components  34 , the two thermally-conductive comb tooth components  34  are separately disposed on two opposite sides of the second comb base  31 , and each of the heat-generating components  33  is thermally conductively connected to one of the thermally-conductive comb tooth components  34  correspondingly. Such arrangement allows both opposite sides of the hot comb head  30  to be used for combing hair, and the user does not need to distinguish the two sides, making it more convenient for the user to use. Moreover, by disposing the thermally-conductive comb tooth component  34  on both opposite sides of the second comb base  31 , it is possible to perform curly hair styling in a better way. Surely, in other embodiments, it is possible to dispose only one heat-generating component  33  and one thermally-conductive comb tooth component  34 . In addition, in other embodiments, the number of the thermally-conductive comb tooth components  34  is three, four or more, the thermally-conductive comb tooth components  34  are arranged at intervals in the circumferential direction of the second comb base  31 , and one heat-generating component  33  is disposed correspondingly for each thermally-conductive comb tooth component  34 . 
     In an embodiment, the hot comb head  30  further includes at least two electrically-conductive probes  43 , the electrically-conductive probes  43  are mounted on the second comb base  31  and electrically connected to the heat-generating component  33 , the circuit device includes a control circuit board and at least two electrically-conductive cartridges, each electrically-conductive cartridge is electrically connected to the control circuit board, and the electrically-conductive probes  43  are plugged with the electrically-conductive cartridges in a one-to-one correspondence. Specifically, the hot comb head  30  further includes a connection circuit board disposed in the second comb base  31 , each of the electrically-conductive probes  43  is electrically connected to the connection circuit board, the heat-generating component  33  is electrically connected to the connection circuit board, and the electrically-conductive probe  43  is in an interference fit with the electrically-conductive cartridge, that is, the electrically-conductive probe  43  is tightly fitted with the electrically-conductive cartridge. By disposing the electrically-conductive probe  43  on the hot comb head  30  and disposing the electrically-conductive cartridge on the handle  10 , the electrically-conductive probes  43  are plugged with the electrically-conductive cartridges in a one-to-one correspondence when the handle  10  and the second comb base  31  are mounted together, thus realizing electrical connection between the heat-generating component  33  and the circuit device. In this way, the electrically-conductive probe  43  can be in a stable contact with the electrically-conductive cartridge, ensuring reliable electrical connection between the electrically-conductive probe  43  and the electrically-conductive cartridge. Surely, in other embodiments, the handle  10  may also be provided thereon with an electrically-conductive contact plate, and the hot comb head  30  is provided with an elastic ejector pin. When the handle  10  and the second comb base  31  are mounted together, the elastic ejector pin elastically abuts against the electrically-conductive contact plate. 
     In an embodiment, the heat-generating component  33  includes a heat-emitting member  331  and a fixing element  332 , the fixing element  332  is mounted on the second comb base  31 , and the heat-emitting member  331  is disposed between the fixing element  332  and the thermally-conductive comb tooth component  34 , and is thermally conductively connected to the thermally-conductive comb tooth component  34 . That is, the fixing member  332  can press the heat-emitting member  331  to fit onto the thermally-conductive comb tooth component  34 . In this way, it is possible to ensure that the heat-generating component  33  is securely fixed in the second comb base  31 , and the heat-emitting member  331  is in good contact with the thermally-conductive comb tooth component  34 . The heat-emitting member  331  may be a resistance wire, a heat-emitting film, or the like. 
     In an embodiment, the heat-generating component  33  further includes an elastic gasket  333  and a temperature sensor, the elastic gasket  333  is disposed between the fixing member  332  and the heat-emitting member  331 , and the temperature sensor is disposed between the elastic gasket  333  and the heat-emitting member  331 . Specifically, the temperature sensor is electrically connected to the circuit device. In an embodiment, the temperature sensor is electrically connected to the connection circuit board, the connection circuit board is plugged into the other two electrically-conductive cartridges of the circuit device through the other two electrically-conductive probes  43 . In this way, the temperature of the heat-emitting member  331  can be detected by using the temperature sensor, which can facilitate controlling the temperature of the heat-emitting member  331 . For example, multiple buttons for different temperature levels may be disposed on the handle  10 , so that the temperature of the thermally-conductive comb tooth component  34  can be adjusted by using the multiple level buttons and the temperature sensor, making it more convenient for the user to use. 
     With reference to  FIG.  5    and  FIG.  7   , in an embodiment, the second comb base  31  forms a region for mounting comb teeth on two opposite sides of the thermally-conductive comb tooth component  34 , and the region for mounting comb teeth is provided with a comb tooth bar  44 . Specifically, the comb tooth bar  44  is an ordinary comb tooth bar  44 . The comb tooth bar  44  is primarily used for a user to comb hair and has no heating function. In this way, by disposing the comb tooth bar  44  on two opposite sides of the thermally-conductive comb tooth component  34 , it is possible to increase the number of comb teeth on the hot comb head  30 , making it more convenient for a user to comb hair. Moreover, when a user performs styling such as hair straightening or curling, the comb tooth bar  44  can also play a better role in guiding hair to the thermally-conductive comb tooth component  34 , ensuring that the thermally-conductive comb tooth component  34  is in full contact with the hair. In an embodiment, the comb tooth bar  44  is disposed at the position between two thermally-conductive comb tooth components  34  of the second comb base  31 . 
     In an embodiment, the comb tooth bar  44  includes a connection bar  441  and multiple tooth portions  442  disposed on the connection bar  441 , the connection bar  441  is mounted on the second comb base  31  and extends in the length direction of the second comb base  31 , and the multiple tooth portions  442  are arranged at intervals in the length direction of the connection bar  441 . Specifically, the multiple tooth portions  442  are integrally connected to the connection bar  441 . Such arrangement can prevent the multiple tooth portions  442  from being mounted one by one during the assembly of styling comb, thereby reducing the assembly processes, enhancing assembly processes and reducing the production cost. Surely, in other embodiments, the comb tooth bar  44  may also be only one independent comb structure. 
     In an embodiment, the second comb base  31  includes a mounting shell  32 , a connection holder  41 , and an end shell  42 , the mounting shell  32  is mounted between the connection holder  41  and the end shell  42 , the connection holder  41  is removably connected to the handle  10 , the heat-generating component  33  is disposed in the mounting shell  32 , and the thermally-conductive comb tooth component  34  is mounted in the mounting shell  32 . Specifically, the mounting shell  32 , the connection holder  41  and the end shell  42  are disposed separately. Such arrangement of assembling them together can simplify the difficulty of molding any one of the mounting shell  32 , the connection holder  41  and the end shell  42 . In addition, even if one of the mounting shell  32 , the connection holder  41  and the end shell  42  is defective during molding, the overall structure of the second comb base  31  will be less affected. Surely, in other embodiments, the second comb base  31  may also be formed by two half shells being buckled together. 
     In an embodiment, the side of the end shell  42  facing away from the mounting shell  32  is provided with a hanging ring portion, the hanging ring portion is used for hanging on a hook, so that the styling comb or the hot comb head  30  can be easily hung on a hook on the wall or other furniture. 
     In an embodiment, the mounting shell  32  includes two first casings  321  disposed opposite to each other and two second casings  322  disposed opposite to each other, any one of the second casings  322  is mounted between the two first casings  321 , the heat-generating component  33  is mounted in the inner chamber enclosed jointly by the two first casings  321  and the two second casings  322 , and at least one of the first casings  321  is provided with the thermally-conductive comb tooth component  34 . Specifically, the two first casings  321  disposed opposite to each other and the two second casings  322  disposed opposite to each other are alternately arranged in sequence in the circumferential direction of the mounting shell  32 . Such arrangement can make the structure of the first casing  321  simpler, reduce the possibility of interference with another structure when the thermally-conductive comb tooth component  34  and the heat-generating component  33  are mounted, and facilitate the mounting of the thermally-conductive comb tooth component  34  and the heat-generating component  33 . In an embodiment, the fixing member  332  is mounted in the first casing  321 , that is, the heat-generating component  33  is mounted between the first casing  321  and the fixing member  332 . In addition, in other embodiments, the mounting shell  32  may also be formed by two casings being buckled together. 
     In an embodiment, the hot comb head  30  further includes multiple comb tooth bars  44 , the comb tooth bar  44  includes a connection bar  441  and multiple tooth portions  442  disposed on the connection bar  441 , the multiple tooth portions  442  are arranged at intervals in the length direction of the connection bar  441 , each of the second casings  322  is provided with multiple mounting slots  323 , the multiple mounting slots  323  are arranged at intervals in the circumferential direction of the mounting shell  32 , and each of the mounting slots  323  extends in the length direction of the mounting shell  32 , and each connection bar  441  is plugged into one corresponding mounting slot  323 . Specifically, during mounting, the connection bar  441  may be inserted from one end of the mounting slot  323 , and the tooth portion  442  protrudes from the mouth of the mounting slot  323  in the length direction of the mounting shell  32 . In this way, the connection bar  441  can be mounted securely in the mounting slot  323 , and when the second casing  322  is mounted between the connection holder  41  and the end shell  42 , the connection holder  41  and the end shell  42  can block and seal the end of the mounting slot  323 . In this way, providing an additional fixing structure to fix the connection bar  441  makes the structure of the second comb base  31  simpler and facilitates the mounting of the comb tooth bar  44  . 
     With reference to  FIGS.  8  to  12   , in an embodiment, the hot comb head  30  and/or the cold comb head  20  are plugged and fixed with the handle  10 . The hot comb head  30  (cold comb head  20 ) may be provided thereon with a plug portion, and the handle  10  may be provided thereon with a plug hole  401 ; or the handle  10  may be provided thereon with a plug portion, and the hot comb head  30  (cold comb head  20 ) may be provided thereon with a plug hole  401 , to achieve fixation by plugging the plug portion into the plug hole  401 . In this way, it is possible to make the connection area between the handle  10  and the hot comb head  30  (cold comb head  20 ) larger, thereby enhancing the stability of connection between the handle  10  and the hot comb head  30  (cold comb head  20 ). In addition, in other embodiments, the hot comb head  30  (cold comb head  20 ) and the handle  10  may also be connected by using a screw or another threaded structure. 
     In an embodiment, the connection holder  41  for the cold comb head  20  is provided with a plug hole  401 . In an embodiment, the connection holder  41  for the hot comb head  30  is provided with a plug hole  401 . 
     In an embodiment, the hot comb head  30  (cold comb head  20 ) is snapped with the handle  10 . That is, when the hot comb head  30  (cold comb head  20 ) is plugged in place with the handle  10 , the hot comb head  30  (cold comb head  20 ) is snapped with the handle  10 . In this way, it is possible to disassemble and assemble the hot comb head  30  (cold comb head  20 ) and the handle  10  easily while ensuring the stable connection between the hot comb head  30  (cold comb head  20 ) and the handle  10 . Surely, in other embodiments, the hot comb head  30  (cold comb head  20 ) and the handle  10  may also be fixed by means of interference fit between the plug portion and the plug hole  401 . 
     In an embodiment, the handle  10  includes a handle shell  11  and a snap component disposed in the handle shell  11 , one end of the handle shell  11  is provided with an assembly port, the snap component is exposed from the assembly port, the hot comb head  30  and/or the cold comb head  20  is provided with the plug hole  401 , the wall of the plug hole  401  is provided with a snap groove  402 , and the snap component is plugged into the plug hole  401  and snapped with the snap groove  402 . That is, when the snap component is inserted into the plug hole  401  and mounted in place, the snap component can be snapped into the snap groove  402 , thereby limiting the disengagement of the snap component from the plug hole  401 . In this way, the plug structure and snap structure between the handle  10  and the hot comb head  30  (cold comb head  20 ) can be disposed collectively, which enhances the structural compactness of the hot comb head  30  (cold comb head  20 ) and the handle  10 , and facilitates reduction in the sizes of the hot comb head  30  (cold comb head  20 ) and the handle  10 . The snap component may extend out of the assembly port; or may be entirely located in the assembly port, and the portion of the hot comb head  30  (cold comb head  20 ) on which the plug hole  401  is disposed protrudes into the assembly port to plug-fit with the snap component. Surely, in other embodiments, a snap structure may also be disposed outside the plug hole  401 , the snap component includes a plug portion and a snap portion disposed on the outer periphery of the plug portion, the plug portion is plugged into the plug hole  401 , and the snap portion is snapped with the snap structure. 
     In an embodiment, the snap component includes a plug member  12 , a snap member  13  and an unlocking press member  14 , the plug member  12  is fixed to the handle shell  11  and exposed from the assembly port. The plug member  12  is plugged into the plug hole  401 , the handle shell  11  is provided with a mounting hole  111 , the unlocking press member  14  is movably mounted in the mounting hole  111 , the snap member  13  is movably mounted in the handle shell  11  in the movement direction of the unlocking press member  14  and is elastically snapped into the snap groove  402 , that is, the snap member  13  tends to move toward the direction of the snap groove  402 , so that when the plug member  12  is plugged into the plug hole  401  in place, the snap member  13  can be automatically snapped into the snap groove  402 , and is always kept in the snap groove  402 . The unlocking press member  14  is disposed on the side of the snap member  13  facing away from the plug member  12 , and the unlocking press member  14  is used to drive the snap member  13  to move in the direction away from the snap groove  402 . 
     When the unlocking press member  14  is pressed, the snap member  13  can be disengaged from the snap groove  402 , so that the plug member  12  can be drawn out of the plug hole  401 , and the handle  10  and the hot comb head  30  (cold comb head  20 ) is separated. In this way, it is possible to ensure stable connection between the hot comb head  30  (cold comb head  20 ) and the handle  10 , and to avoid undesired separation between the hot comb head  30  (cold comb head  20 ) and the handle  10 . Moreover, by disposing the unlocking press member  14  on the handle  10 , the user’s finger can be closer to the unlocking press member  14  when the user holds the handle  10 , making it convenient for the user to operate. The unlocking press member  14  and the snap member  13  may be connected (fixedly connected, hinged) together, or the unlocking press member  14  may abut against a side of the snap member  13 . In addition, in other embodiments, the unlocking press member  14  may also be mounted on the hot comb head  30  (cold comb head  20 ). 
     In an embodiment, the snap component further includes an elastic member  15 , the elastic member  15  elastically abuts against the side of the snap member  13  facing away from the unlocking press member  14 . Specifically, the elastic member  15  is in the compressed state and tends to elastically deform toward the direction of the snap groove  402 , so as to drive the snap member  13  to move in the direction of the snap groove  402 . In this way, by disposing the elastic member  15  to make the snap member  13  tend to move towards the direction of the snap groove  402 , it is possible to ensure that the elastic member  15  has a reliable structure, thus ensuring that the snap member  13  can be snapped into the snap groove  402  in a stable way, reducing the risk of undesired disengagement of the snap member  13  from the snap groove  402 , and ensuring reliable connection between the handle  10  and the hot comb head  30  (cold comb head  20 ). Optionally, the elastic member  15  is a compression spring, a rubber block or a flat spring. In addition, in other embodiments, the snap member  13  includes an elastic arm and a snap protrusion disposed at an end of the elastic arm, the snap protrusion is snapped into the snap groove  402 , the end of the elastic arm distal from the snap protrusion is fixed to the casing or the plug member  12 , and there is a clearance space between the elastic arm and the plug member  12  for the elastic arm to deform. 
     In an embodiment, the outer peripheral face of the plug member  12  is provided with a clearance groove  121 , and the snap member  13  is movably mounted in the clearance groove  121 . Such arrangement can minimize the size of the avoidance groove  121  in the premise of ensuring the normal movement of the snap member  13 , thus making the fitting area between the plug member  12  and the plug hole  401  larger, enhancing stability of connection between the hot comb head  30  (cold comb head  20 ) and the handle  10 , and making the structures of the snap member  13  and the plug member  12  compact as well, which further enhances the structural compactness of the connection between the hot comb head  30  (cold comb head  20 ) and the handle  10 . Surely, in other embodiments, a flat structure may also be disposed on a side of the plug member  12  corresponding to the snap groove  402 , that is, the portion where the plug member  12  is inserted into the plug hole  401  is set to be a flat structure. 
     In an embodiment, the snap component includes two snap members  13  and two unlocking press members  14 , the two snap members  13  are separately disposed on two opposite sides of the plug member  12 , each of the unlocking press members  14  is correspondingly disposed on the side where one of the snap members  13  faces away from the other snap member  13 , and the handle shell  11  is provided with a mounting hole  111  corresponding to each of the unlocking press members  14 . In this embodiment, the plug hole  401  is provided therein with one snap groove  402  corresponding to each of the snap members  13 , and each of the snap members  13  is snapped into one corresponding snap groove  402 . Disposing two snap members  13  equates to adding a snap position between the handle  10  and the hot comb head  30  (cold comb head  20 ), which can further enhance the stability of snapping between the handle  10  and the hot comb head  30  (cold comb head  20 ). Moreover, disposing two snap members  13  separately on two opposite sides of the plug member  12  equates to disposing two snapping positions of the handle  10  and the hot comb head  30  (cold comb head  20 ) substantially symmetrically, so that the handle  10  and the hot comb head  30  (cold comb head  20 ) are subject to uniform force therebetween. In addition, as one corresponding unlocking press member  14  is provided for each of the snap members  13 , when it is necessary to separate the hot comb head  30  (cold comb head  20 ) from the handle  10 , it is required to press the two unlocking press members  14  simultaneously to disengage the two snap members  13  from the snap groove  402 , so that the hot comb head  30  (cold comb head  20 ) and the handle  10  can be disengaged. In this way, the risk of the hot comb head  30  (cold comb head  20 ) being disengaged from the handle  10  due to incorrect operation can be further reduced, and the stability of connection between the handle  10  and the hot comb head  30  (cold comb head  20 ) can be further enhanced. 
     Surely, in other embodiments, the number of the snap members  13  may be three, four or more, that is, multiple snap members  13  are arranged at intervals in the circumferential direction of plug member  12 . In addition, in other embodiments, the snap groove  402  is in a ring shape extending in the circumferential direction of the plug hole  401 , and both two snap members  13  are snapped into the snap groove  402 . 
     In an embodiment, the plug member  12  is provided with a mounting through hole  122  extending in the direction of arranging the two snap members  13 , and the elastic member  15  is disposed in the mounting through hole  122  and elastically abuts between two snap members  13 . Specifically, the direction of arranging the two snap members  13  refers to the direction in which one of the snap members  13  points to the other snap member  13 . The elastic member  15  is movably mounted in the mounting through hole  122 , and one end of the elastic member  15  abuts against one of the snap members  13 , and the other end abuts against the other snap member  13 . Such arrangement enable the two snap members  13  to share one elastic member  15 , which can reduce the number of parts of the handle  10 , increase the space for mounting the elastic member  15 , and enlarge the space available for the elastic member  15  to deform, without increasing the size of the handle  10 . In addition, the deflection of the elastic member  15  can be limited by the mounting through hole  122 , ensuring that the elastic member  15  can elastically deform in its length direction in a better way. Surely, in other embodiments, one elastic member  15  may be disposed between each snap member  13  and plug member  12 . 
     In an embodiment, the handle shell  11  is provided therein with a guide column  112  extending in the movement direction of the snap member  13 , and the snap member  13  is slidably mounted on the guide column  112 . In this way, the guide column  112  can provide better guidance for the movement of the snap member  13 , ensuring that the snap member  13  can move in the movement direction of the unlocking press member  14  in a better way, and reducing the risk of deflective movement of the snap member  13 . 
     In an embodiment, the point where the snap member  13  abuts against the unlocking press member  14  is located on the axial extension line of the elastic member  15 . In another embodiment, the point where the elastic member  15  abuts against the snap member  13  is located between the point, in which the snap member  13  abuts against the unlocking press member  14 , and the guide column  112 . In yet another embodiment, the point where the unlocking press member  14  abuts against the snap member  13  is located between the point, in which the elastic member  15  abuts against the unlocking press member  14 , and the guide column  112 . 
     With reference to  FIG.  9    and  FIG.  13   , or with reference to  FIG.  11    and  FIG.  13   , in an embodiment, the plug hole  401  is provided therein with a limit portion  403 , the limit portion  403  is provided therein with a limit hole  404 , the snap component is provided with a limit boss  123 , and the limit boss  123  is plugged into the limit hole  404 . Specifically, the limit hole  404  is disposed close to the wall of the plug hole  401 . In this way, when the limit boss  123  is plugged into the limit hole  404 , it is possible to better prevent the hot comb head  30  (cold comb head  20 ) from rotating relative to the handle  10 , which can facilitate the positioning and mounting of the hot comb head  30  (cold comb head  20 ) and the handle  10 . The number of the limit bosses  123  may be one or more (at least two), and the limit portion  403  is provided with one corresponding limit hole  404  for each limit boss  123 . In an embodiment, the plug member  12  is provided with a limit boss  123 . Surely, in other embodiments, the plug hole  401  may also be configured as a non-rotating hole, such as a square hole, an elliptical hole, a polygonal hole, or the like. 
     In an embodiment, the plug hole  401  is provided therein with a limit portion  403 , the limit portion  403  is provided with an insertion hole  405  and a foolproof gap  406  communicating with the insertion hole  405 , the snap component is provided with a plug column  124 , the outer peripheral face of the plug column  124  is provided with a convex foolproof rid  125 , the plug column  124  is plugged into the plug hole  401 , and the convex foolproof rid  125  is plugged into the foolproof gap  406 . That is, only when the convex foolproof rid  125  is plugged into the foolproof gap  406 , can the plug portion and the plug hole  401  be correctly fitted. In this way, it is possible to prevent misalignment of the hot comb head  30  (cold comb head  20 ) and the handle  10  during assembly. In an embodiment, the plug member  12  is provided with a plug column  124 . 
     The foregoing is merely the preferred embodiments of the present invention, and is not intended to limit the patent scope of the present invention. Any equivalent structural modification made by using the contents of the description and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other relevant technical fields falls within the patent scope claimed by the present invention.