Handheld appliance

Abstract

The utility model relates to the related technical field of hair treatment equipment, and provides a handheld appliance. The hand-held appliance comprises a hand-held part; the modeling part is connected with the handheld part and comprises a pair of clamping plates which can be oppositely opened and closed, at least one clamping plate in the pair of clamping plates comprises a bottom shell and a heating assembly arranged on the bottom shell, and the heating assembly comprises a heat conduction plate which is provided with a heating surface for heating hair; the heating body is arranged on the side, away from the heating face, of the heat conduction plate and used for supplying heat to the heat conduction plate. The pressing plate abuts against the side, away from the heat conduction plate, of the heating body. The fastening elastic piece is arranged on the heat conduction plate and used for applying pre-tightening force to the pressing plate so that the pressing plate can abut against the heating body. By means of the fixing mode of the heating body in the optimizer, the heating body can be tightly attached to the heat conduction plate under the condition that a heat insulation film of the heating body is not punctured, the temperature of the heating face of the modeling part is made to rise evenly, and therefore hair is heated evenly, and a better modeling effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field related to hair processing equipment, in particular to a handheld device. Background Art

[0002] In the related art, a hair straightener heats a heating element through electric current, transfers the heat to a corresponding heat-conducting plate to heat the hair, soften it, and then cool it down, thereby achieving hair styling.

[0003] However, when the heating element in a traditional hair straightener heats the heat conducting plate, the unreasonable fixing method of the internal heating element causes the temperature of the heat conducting plate to rise unevenly, which in turn causes part of the user's hair to fail to achieve the heating effect. Therefore, part of the hair needs to be heated multiple times, causing certain discomfort to the user. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a handheld appliance for solving the technical problem that the hair straighteners in the prior art have poor heating effect on the hair.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] The present application provides a handheld device, comprising:

[0007] Handheld part;

[0008] A shaping part connected to the handheld part, the shaping part includes a pair of clamps that can be relatively opened and closed, at least one of the pair of clamps includes: a bottom shell, a heating component arranged on the bottom shell,

[0009] The heating component includes: a heat conducting plate having a heating surface for heating hair; a heating element arranged on a side of the heat conducting plate away from the heating surface and used to supply heat to the heat conducting plate; a pressing plate abutting against a side of the heating element away from the heat conducting plate; and a fastening spring sheet arranged on the heat conducting plate and used to apply a pre-tightening force to the pressing plate to make it abut against the heating element.

[0010] According to some embodiments of the present application, the fastening spring sheet is a multi-section bent plate-like structure with a preset bending angle, and the fastening spring sheet includes:

[0011] A fixed plate segment, wherein the fixed plate segment is provided with a mounting hole, and the mounting hole is used to connect with the heat conducting plate through a first fastener;

[0012] An abutting plate segment is connected to the fixing plate segment and has an abutting surface that abuts against the pressing plate.

[0013] According to some embodiments of the present application, the fastening spring sheet further includes: a first connecting plate segment,

[0014] The first connecting plate segment is connected between the fixing plate segment and the abutting plate segment, and forms corresponding bending angles with the fixing plate segment and the abutting plate segment respectively.

[0015] According to some embodiments of the present application, the shaping part further includes: a fuse,

[0016] A hollow structure is provided in the middle area of ​​the abutting plate section, and a clamping structure is provided on the side of the abutting plate section facing away from the pressing plate.

[0017] Wherein, the clamping structure is used to fix the fuse at the hollow structure.

[0018] According to some embodiments of the present application, the clamping structure includes: at least two clamping claws,

[0019] Wherein, the at least two clamping claws are divided into two groups, and the two groups of clamping claws are arranged oppositely at the edges of the hollow structure.

[0020] According to some embodiments of the present application, a side of the heat conducting plate opposite to the heating surface is concave to form a receiving cavity, and the heating element, the pressing plate and the fastening spring sheet are assembled in the receiving cavity;

[0021] The shaping part further comprises: a fixing plate covering the cavity opening of the accommodating cavity.

[0022] According to some embodiments of the present application, the fastening spring sheet further includes: a clamping plate segment connected to the abutting plate segment,

[0023] The clamping plate section is provided with a protrusion, and the protrusion is used for clamping and matching with the socket on the fixing plate.

[0024] According to some embodiments of the present application, the fastening spring sheet further includes: a second connecting plate segment,

[0025] The second connecting plate segment is connected between the clamping plate segment and the abutting plate segment, and forms corresponding bending angles with the clamping plate segment and the abutting plate segment respectively.

[0026] According to some embodiments of the present application, the hand-held portion is detachably connected to the shaping portion.

[0027] The modeling part further includes: an accessory PCB board, a plug spring connected to the accessory PCB board, and a conductive pin plugged with the plug spring; the handheld part includes: a coupler PCB board, and a spring pin arranged on the coupler PCB board;

[0028] When the hand-held part is connected to the shaping part, the elastic pin is electrically connected to the conductive pin.

[0029] According to some embodiments of the present application, the handheld appliance further comprises: a second styling part, the second styling part being an electrically heated comb or a hair dryer,

[0030] The shaping part and the second shaping part are replaceably connected to the hand-held part.

[0031] In the above technical solution, a handheld device is provided, which optimizes the fixing method of the heating element inside the device, so that the heating element can be tightly attached to the heat conduction plate without puncturing the insulation film of the heating element, so that the temperature of the heating surface of the styling part rises evenly, thereby making the hair evenly heated and achieving a better styling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 is a cross-sectional view of a heating component of a handheld appliance according to an exemplary embodiment;

[0034] Figure 2 is an exploded view of a heat generating component of a handheld appliance according to an exemplary embodiment;

[0035] Figure 3 is a top view of a heating component of a handheld appliance according to an exemplary embodiment;

[0036] Figure 4 is a schematic diagram of a heat conducting plate of a handheld appliance according to an exemplary embodiment;

[0037] Figure 5 is a schematic diagram of a fastening spring sheet of a handheld device according to an exemplary embodiment;

[0038] Figure 6 is a schematic diagram of a fixing plate of a handheld device according to an exemplary embodiment;

[0039] Figure 7 is a schematic diagram showing the location of a temperature sensor of a handheld appliance according to an exemplary embodiment;

[0040] Figure 8 is an overall schematic diagram of a handheld device according to an exemplary embodiment;

[0041] Fig. 9 is a schematic diagram of a shaping portion of a handheld device according to an exemplary embodiment;

[0042] Fig.10 is a cross-sectional view of a connection between a hand-held portion and a shaping portion of a hand-held device according to an exemplary embodiment;

[0043] Fig.11 yes Fig.10 A magnified view of the structure of the middle A section;

[0044] Fig.12 It is a schematic structural diagram of an insertion spring according to an exemplary embodiment.

[0045] In the figure:

[0046] 10. Modeling part; 11. Insert spring; 111. Connecting column; 112. Notch; 12. Conductive pin; 13. Accessory PCB board;

[0047] 10A, bottom shell; 10B, heating component; 101, heat conducting plate; 101A, accommodating cavity; 1011, first fixing part; 1012, second fixing part; 102, heating element; 103, pressing plate; 1031, clamping plate; 104, fastening spring; 1041, fixing plate section; 1042, first connecting plate section; 1043, abutting plate section; 1044, claw; 1045, second connecting plate section; 1046, clamping plate section; 1047, protrusion; 105, fixing plate; 1051, socket; 106, fuse; 107, temperature sensor; 108, first fastener; 109, second fastener;

[0048] 20. Hand-held part; 21. Spring pin; 22. Coupler PCB board. DETAILED DESCRIPTION

[0049] The present application is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the present application will become clearer and more specific.

[0050] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.

[0051] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0052] In the related art, the heating element in the traditional hair straightener is generally fixed by a fixing plate and screws. Since the tightening force of the screws at different positions is different, this method cannot well ensure that the heating element is in full contact with the heat conducting plate and is easy to puncture the heat insulation film. Therefore, when heating the heat conducting plate, the temperature of the heat conducting plate will rise unevenly due to the unreasonable fixing method of the internal heating element, which will cause part of the user's hair to fail to achieve the heating effect, and part of the hair needs to be heated multiple times, which will cause certain discomfort to the user and reduce the user experience.

[0053] The present application provides a handheld device, which optimizes the fixing method of the heating element inside the clamp plate thereof, and applies uniform pre-tightening force to the heating element by setting mutually cooperating fastening springs and pressure plates at corresponding positions, thereby ensuring that the heating element can have more comprehensive contact with the heat conducting plate. Based on the clamp plate design of the handheld device, the heating element can be tightly attached to the heat conducting plate without puncturing the heat insulating film of the heating element, so that the surface temperature of the heating surface of the styling part rises evenly, so that the hair is evenly heated, achieving a better styling effect.

[0054] The technical solution of this embodiment is described in detail below in conjunction with the accompanying drawings. The following embodiments and implementation methods can be combined with each other if there is no conflict.

[0055] In an exemplary embodiment of the present utility model, a handheld device is provided, such as Figure 1-Figure 3 As shown, the handheld device includes a handheld portion 20 and a shaping portion 10 connected to the handheld portion 20 .

[0056] The shaping part 10 includes a pair of clamps that can be relatively opened and closed, and at least one of the pair of clamps includes: a bottom shell 10A, and a heating component 10B arranged on the bottom shell 10A. The heating component 10B includes: a heat conducting plate 101, which has a heating surface for heating the hair; a heating element 102, which is arranged on the side of the heat conducting plate 101 away from the heating surface and is used to provide heat to the heat conducting plate 101; a pressing plate 103, which abuts against the side of the heating element 102 away from the heat conducting plate 101; and a fastening spring 104, which is arranged on the heat conducting plate 101 and is used to apply a pre-tightening force to the pressing plate 103 to make it abut against the heating element 102.

[0057] If the heating element fails to be in close contact with the heat conducting plate 101, the temperature of the heating surface of the heat conducting plate 101 will be uneven; if the heating element is subjected to a large pressure, the heat insulation film of the heating element 102 will be punctured. In this exemplary embodiment, based on the optimization and adjustment of the heating component 10B in the molding part 10, the fastening spring sheet 104 cooperates with the pressing plate 103 to keep the heating element 102 and the heat conducting plate 101 in close contact. Since the spring sheet has a certain elastic force, the pressing plate 103 and the heating element 102 are in surface contact. When the heating element is in close contact with the heat conducting plate 101, no additional force will be generated to squeeze the heating element, and the heat insulation film of the heating element 102 will not be damaged. Therefore, after the heat conducting plate 101, the heating element 102, the pressing plate 103 and the fastening spring sheet 104 are assembled, the heat conducting plate 101 is fixed with the fastening spring sheet 104, and the pressing plate 103 is pressed down by the fastening spring sheet 104. The heating element 102 can be tightly attached to the heat conducting plate 101 without piercing the insulation film of the heating element 102, so that the temperature of the heating surface of the styling part 10 rises evenly, so that the hair is evenly heated and a better styling effect is achieved.

[0058] It should be noted that the hair can be human hair or animal hair. The heating element 102 can be MCH (Metal Ceramics Heater, metal ceramic heating element 102) or PTC heating element 102 or heating wire, etc. The pressing plate 103 can be made of metal material; the fastening spring 104 can be made of metal material; the heat conducting plate 101 can be made of metal material.

[0059] In some exemplary embodiments, considering the way the heating element 102 is fixed in the existing hair straightening heating comb, it is easy to puncture the corresponding heat insulation film, which will also lead to poor heat transfer effect. In this embodiment, in order to ensure good surface contact between the heating element 102 and the heat conducting plate 101, the force of the pressing plate 103 against the heating element 102 needs to be uniform, so the part of the fastening spring 104 that presses against the pressing plate 103 can adopt a plate-like structure, or the fastening spring 104 can be a plate-like structure as a whole.

[0060] Exemplarily, the fastening spring piece 104 is a multi-section bent plate-shaped structure with a preset bending angle, and the fastening spring piece 104 includes: a fixed plate 105 section 1041, on which a mounting hole is provided, and the mounting hole is used to connect with the heat conducting plate 101 through the first fastener 108; an abutting plate section 1043, the abutting plate section 1043 is connected to the fixed plate 105 section 1041, and the abutting plate section 1043 has an abutting surface that abuts and cooperates with the pressing plate 103. After the fixed plate 105 section 1041 of the fastening spring piece 104 is fixed to the heat conducting plate 101, the abutting plate section 1043 can just press the pressing plate 103 and maintain a certain pressing force. At this time, under the action of the pressing plate 103, the heating element 102 and the heat conducting plate 101 are in good contact with each other, so that the heat emitted by the heating element 102 can be effectively transferred to the heat conducting plate 101. Finally, after the heat conducting plate 101 absorbs the heat, its heating surface rises to a suitable temperature, so that the hair can be processed.

[0061] In some exemplary embodiments, Figure 1 , Figure 2 and Figure 5 As shown, considering that there may be a height difference (non-coplanarity) between the pressure plate 103 and the position of the connection and fastening spring sheet 104 of the heat conducting plate 101, when the height difference between the two is large, a corresponding connecting plate segment can be provided to extend the size of the fastening spring sheet 104 or form a corresponding deformation to make the components fit. Exemplarily, the fastening spring sheet 104 also includes: a first connecting plate segment 1042. The first connecting plate segment 1042 is connected between the fixing plate 105 segment 1041 and the abutting plate segment 1043, and forms corresponding bending angles with the fixing plate 105 segment 1041 and the abutting plate segment 1043 respectively.

[0062] In some exemplary embodiments, Figure 2-Figure 3 As shown, considering the need to protect the safety of the circuit in the handheld device, the shape part 10 also includes: a fuse 106. In order to facilitate the installation of the fuse 106, the fuse 106 can be fixed by optimizing the fixing spring clip. Exemplarily, a hollow structure is provided in the middle area of ​​the abutment plate segment 1043, and a clamping structure is provided on the side of the abutment plate segment 1043 facing away from the pressure plate 103, and the fuse 106 is fixed at the hollow structure through the clamping structure. The design method of the fastening spring clip 104 can not only realize the fixation of the fuse 106, but also save the material of the fastening spring clip 104. It should be noted that the shape of the hollow structure can be a rectangular hole or other irregular holes.

[0063] In some exemplary embodiments, Figure 5 As shown, in this embodiment, the clamping structure includes: at least two clamping claws 1044. The at least two clamping claws 1044 are divided into two groups, and the two groups of clamping claws 1044 are relatively arranged at the edge of the hollow structure.

[0064] Optionally, the clamping structure includes three claws 1044, two claws 1044 are provided at one edge of the hollow structure, and one claw 1044 is provided at the other edge of the hollow structure opposite to the two claws 1044, and the three claws 1044 cooperate with each other to clamp and fix the fuse 106. Based on the three claws 1044 provided on the fastening spring 104, since the position of the fuse 106 corresponds to the hollow structure, it can be closer to the pressing plate 103 and the heating body, so that the temperature near the heating body (which can be regarded as the internal temperature of the molding part 10) can be more accurately identified, and the error value is smaller, so that the reliability of the fuse 106 can be guaranteed.

[0065] In addition, in order to improve the efficiency of disassembling and assembling the fuse 106, the free end of the corresponding claw 1044 can be improved, such as providing an arc-shaped guide surface.

[0066] In some exemplary embodiments, Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, in order to realize the assembly of the heating component 10B, the heat conducting plate 101 can be optimized. Exemplarily, the side of the heat conducting plate 101 opposite to the heating surface is concave to form a receiving cavity 101A, and the heating element 102, the pressing plate 103 and the fastening spring 104 are assembled in the receiving cavity 101A; the molding part 10 also includes: a fixing plate 105 covering the cavity opening of the receiving cavity 101A.

[0067] In this embodiment, by setting the first fixing portion 1011 at the edge of the heat conducting plate 101, after the heating element 102 and the pressing plate 103 are assembled inside the accommodating cavity 101A, the fixing plate 105 segment 1041 of the fastening spring 104 is fixed to the first fixing portion 1011 of the heat conducting plate 101 by the first fastener 108, and the structure is more beautiful. Since the abutting plate segment 1043 abuts against the pressing plate 103 and forms a pre-tightening force, the pressing plate 103 can apply a uniform force to the heating element 102, and the surface contact effect between the heating element 102 and the heat conducting plate 101 can be ensured. When the handheld device is working, the temperature of each position of the heating surface of the styling part 10 rises more evenly, so that when the hair is processed, the hair can be heated evenly to achieve a better styling effect.

[0068] To realize the assembly of the fixing plate 105 and the heat conducting plate 101, a corresponding second fixing portion 1012 may be provided on the heat conducting plate 101, and the two may be fixed by a corresponding second fastener 109, wherein the second fastener 109 may be a bolt, a screw or a pin, etc. For example, four bolt holes may be provided at the four corners of the heat conducting plate 101, and the fixing plate 105 and the heat conducting plate 101 may be connected by four bolts.

[0069] Alternatively, to simplify the internal structure of the molding part 10, when the fixing plate 105 is fixed to the heat conducting plate 101, the first fastener 108 can be shared with the fixing plate 105 segment 1041 of the fastening spring sheet 104. That is, the fixing plate 105 segment 1041 of the fastening spring sheet 104 and the fixing plate 105 are fixed to the first fixing part 1011 of the heat conducting plate 101 by the first fastener 108. The first fastener 108 can be a bolt, a screw, a pin, etc.

[0070] In some exemplary embodiments, Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the fastening spring piece 104 also includes: a snap-in plate section 1046 connected to the abutting plate section 1043. The snap-in plate section 1046 is provided with a protrusion 1047, and the protrusion 1047 is used to snap-fit ​​with the socket 1051 on the fixing plate 105. In this embodiment, by optimizing the fastening spring piece 104, one end of it is fixed to the heat conducting plate 101, and the other end is snap-fit ​​with the fixing plate 105, so that the force of the fastening spring piece 104 against the pressing plate 103 is more uniform, and the stability of the cooperation between the two is improved. In addition, based on the cooperation mode of the protrusion 1047 and the socket 1051, when assembling the fastening spring piece 104 and the fixing plate 105, the two can be quickly positioned, which is convenient for the disassembly and assembly of the corresponding components.

[0071] Considering that if the heating body fails to be in close contact with the heat conducting plate 101, this will cause the temperature of the heating surface of the heat conducting plate 101 to be uneven; if the heating body is subjected to a large pressure, the heat insulation film of the heating body 102 will be punctured. In this embodiment, the pressing plate 103 is pressed against the heating body by the fastening spring sheet 104, so that the heating body is in close contact with the heat conducting plate 101, so as to achieve the purpose of uniform heating; the fastening spring sheet 104 is fixed by the plane of the heat conducting plate 101 and the fixing plate 105, and the pressing plate 103 is pressed down by the fastening spring sheet 104, so that the heating body can be in close contact with the heat conducting plate 101. Since the spring sheet has a certain elastic force, when the heating body is in close contact with the heat conducting plate 101, no additional force will be generated to squeeze the heating body, so the heat insulation film of the heating body will not be punctured.

[0072] In some exemplary embodiments, Figure 1-Figure 5As shown, considering that there may be a height difference (non-coplanarity) between the clamping plate 103 and the position of the clamping and fastening spring sheet 104 of the fixing plate 105, when the height difference between the two is large, a corresponding connecting plate segment can be provided to extend the size of the fastening spring sheet 104 or form a corresponding deformation to make the components fit. Exemplarily, the fastening spring sheet 104 also includes: a second connecting plate segment 1045. The second connecting plate segment 1045 is connected between the clamping plate segment 1046 and the abutting plate segment 1043, and forms corresponding bending angles with the clamping plate segment 1046 and the abutting plate segment 1043 respectively.

[0073] In some exemplary embodiments, Figure 1 , Figure 2 and Figure 7 As shown, the shaping part 10 further includes: a temperature sensor 107 for detecting the temperature of the heat conducting plate 101 in the shaping part 10. The temperature sensor may be a NTC (Negative Temperature Coefficient, negative temperature coefficient thermistor) or the like.

[0074] To facilitate the fixing of the temperature sensor 107, the pressing plate 103 can cooperate with the heat conducting plate 101. For example, the pressing plate 103 is provided with a clamping plate 1031, and the inner wall of the accommodating cavity 101A of the heat conducting plate 101 cooperates with the clamping plate 1031 to form a clamping groove for fixing the temperature sensor 107.

[0075] The temperature sensor 107 is placed at Figure 7 At the corresponding position shown, the temperature sensor 107 is pressed and closely attached to the heating area of ​​the heat conducting plate 101 by the slot formed by the pressing plate 103 and the heat conducting plate 101. By sensing the temperature change of the heat conducting plate 101, the corresponding controller will change the corresponding resistance according to the temperature change, so as to accurately control the heating of the heating element 102.

[0076] In some exemplary embodiments, Figure 8-Figure 11 As shown, the handle portion 20 is detachably connected to the shaping portion 10 .

[0077] Since the hand-held portion 20 is detachably connected to the styling portion 10, the styling portion 10 in this embodiment can be replaced by other accessories, such as hair straightening comb teeth.

[0078] In some exemplary embodiments, the modeling part 10 further includes: an accessory PCB board 13, a plug spring 11 connected to the accessory PCB board 13, and a conductive pin 12 plugged with the plug spring 11; the handheld part 20 includes: a coupler PCB board 22, and an elastic pin 21 disposed on the coupler PCB board 22. When the handheld part 20 is connected to the modeling part 10, the elastic pin 21 is electrically connected to the conductive pin 12.

[0079] Optionally, the conductive needle 12 is a columnar structure; the plug spring 11 adopts a tubular structure formed by a plurality of curved spring sheets as side walls arranged at preset intervals, wherein an accessory PCB board 13 is connected to the first end of the tubular structure, and the second end of the tubular structure is used to connect to the conductive needle 12, and a tube mouth is formed at the second end thereof, which first gradually shrinks and then gradually expands. This shape of the tube mouth facilitates plug-in cooperation with the conductive needle 12 and can form a certain pre-tightening on the conductive needle 12.

[0080] In another alternative, the conductive needle 12 is a columnar structure; Fig.12 As shown, the plug spring 11 adopts a cylindrical structure, wherein a connecting column 111 connected to the accessory PCB board 13 is formed at the first end of the cylindrical structure, and its second end is used to connect the conductive needle 12. A cylindrical mouth that first gradually shrinks and then gradually expands is formed at the second end of the cylindrical structure, and a notch 112 is opened on the cylindrical wall near the second end along the length direction of the cylindrical structure. This shape of the cylindrical mouth is convenient for plugging and matching with the conductive needle 12 and can form a certain pre-tightening on the conductive needle 12.

[0081] In the description of the present application, it should be noted that the terms "upper", "lower", "inside", "outside", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships in the working state of the present application. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

[0082] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0083] The present application has been described above in conjunction with preferred embodiments, but these embodiments are only exemplary and serve only as an illustration. On this basis, various replacements and improvements may be made to the present application, all of which fall within the scope of protection of the present application.

Claims

1. A handheld device, characterized in that: include: Handheld part; A shaping part connected to the handheld part, the shaping part includes a pair of clamps that can be relatively opened and closed, at least one of the pair of clamps includes: a bottom shell, a heating component arranged on the bottom shell, The heating component includes: a heat conducting plate having a heating surface for heating hair; a heating element arranged on a side of the heat conducting plate away from the heating surface and used to supply heat to the heat conducting plate; a pressing plate abutting against a side of the heating element away from the heat conducting plate; and a fastening spring sheet arranged on the heat conducting plate and used to apply a pre-tightening force to the pressing plate to make it abut against the heating element.

2. The handheld device according to claim 1, characterized in that The fastening spring piece is a multi-section bent plate structure with a preset bending angle, and the fastening spring piece includes: A fixed plate segment, wherein the fixed plate segment is provided with a mounting hole, and the mounting hole is used to connect with the heat conducting plate through a first fastener; An abutting plate segment is connected to the fixing plate segment and has an abutting surface that abuts against the pressing plate.

3. The handheld device according to claim 2, characterized in that The fastening spring sheet further comprises: a first connecting plate section, The first connecting plate segment is connected between the fixing plate segment and the abutting plate segment, and forms corresponding bending angles with the fixing plate segment and the abutting plate segment respectively.

4. The handheld device according to claim 3, characterized in that: The modeling part also includes: a fuse, A hollow structure is provided in the middle area of ​​the abutting plate section, and a clamping structure is provided on the side of the abutting plate section facing away from the pressing plate. Wherein, the clamping structure is used to fix the fuse at the hollow structure.

5. The handheld device according to claim 4, characterized in that The clamping structure comprises: at least two clamping claws, Wherein, the at least two clamping claws are divided into two groups, and the two groups of clamping claws are arranged oppositely at the edges of the hollow structure.

6. The handheld device according to any one of claims 2 to 5, characterized in that: The side of the heat conducting plate opposite to the heating surface is concave to form a receiving cavity, and the heating element, the pressing plate and the fastening spring sheet are assembled in the receiving cavity; The shaping part further comprises: a fixing plate covering the cavity opening of the accommodating cavity.

7. The handheld device according to claim 6, characterized in that The fastening spring sheet further comprises: a clamping plate segment connected to the abutting plate segment, The clamping plate section is provided with a protrusion, and the protrusion is used for clamping and matching with the socket on the fixing plate.

8. The handheld device according to claim 7, characterized in that The fastening spring sheet further comprises: a second connecting plate section, The second connecting plate segment is connected between the clamping plate segment and the abutting plate segment, and forms corresponding bending angles with the clamping plate segment and the abutting plate segment respectively.

9. The handheld device according to claim 1, characterized in that: The hand-held part is detachably connected to the shaping part.

10. The handheld device according to claim 9, characterized in that The modeling part further includes: an accessory PCB board, a plug spring connected to the accessory PCB board, and a conductive pin plugged with the plug spring; the handheld part includes: a coupler PCB board, and a spring pin arranged on the coupler PCB board; When the hand-held part is connected to the shaping part, the elastic pin is electrically connected to the conductive pin.

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