hot air cylinder

Abstract

This application relates to the field of hair curling device technology, and provides a hot air gun. The hot air gun includes a main body, a fan assembly, a flexible clip, and a power connector. An air outlet is formed on the main body, and a mounting cavity is formed within the main body. The fan assembly is mounted within the mounting cavity and can blow air outwards through the air outlet. One end of the main body has a mounting port communicating with the mounting cavity, and the power connector is rotatably inserted into the mounting port. The flexible clip is fixedly disposed within the mounting cavity and electrically connected to the fan assembly. The power connector is snap-fitted into the flexible clip and can rotate relative to the flexible clip and the main body. The power connector is used to connect an external power cord. When the main body rotates to curl hair, the power connector can rotate relative to the main body to prevent the external power cord connected to the power connector from twisting or tangling. The flexible clip and the power connector are connected by a snap-fit ​​mechanism, simplifying assembly, reducing the structure of the main body, and lowering the cost of the hot air gun.

Description

Technical Field

[0001] This application relates to the field of hair curling device technology, and more particularly to a hot air blower. Background Technology

[0002] As people's demand for personalized hairstyles increases, the use of hair dryers for temporary curling is becoming more and more common. A typical hair dryer usually consists of a handle for the user to hold and an air outlet connected to one end of the handle. This air outlet is equipped with a heating element and a fan to blow hot air outwards. During use, the user places the air outlet on their hair and rotates the hair dryer around its axis, causing the hair to curl around the outer surface of the air outlet. The hot air from the outlet heats and sets the curled hair.

[0003] However, when users rotate the hot air dryer to curl hair, the power cord connected to the handle inevitably twists synchronously with the device. This continuous and uncontrollable torsional force repeatedly applied to the power cord can easily lead to fatigue damage to the internal conductors, wear of the insulation layer, and even excessive tangling and knotting, potentially causing wire breakage, poor contact, and other malfunctions. This not only seriously affects the lifespan and ease of use of the hot air dryer, reducing the user experience, but also poses potential safety hazards (such as short circuits and electric shock risks), which urgently need to be improved. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a hot air duct.

[0005] This application provides a hot air duct, including a main body, a fan assembly, a flexible buckle, and a power connector;

[0006] An air outlet is formed on the main body, and an installation cavity is formed inside the main body. The fan assembly is installed in the installation cavity and can blow air outward through the air outlet. One end of the main body is provided with an installation port that communicates with the installation cavity, and the power connector is rotatably inserted into the installation port.

[0007] The elastic buckle is fixedly disposed in the mounting cavity and electrically connected to the fan assembly;

[0008] The power connector is snapped into place with the elastic buckle, and the power connector can rotate relative to the elastic buckle and the main body.

[0009] The power connector is used to connect an external power cord.

[0010] Optionally, the elastic buckle includes a base plate and two elastic arms connected to one side of the base plate. The base plate is fixedly connected to the mounting cavity. The two elastic arms are opposite to each other and spaced apart. The power connector is snapped between the two elastic arms.

[0011] Optionally, the power connector includes a base and a rotating shaft. The rotating shaft is connected to one side of the base and passes through the mounting opening. The base is located outside the main body. The rotating shaft is provided with a mating ring groove. Two elastic arms are placed in the mating ring groove, and the elastic arms abut against the groove wall of the mating ring groove.

[0012] Optionally, there may be multiple elastic clips, which are arranged axially along the mounting opening, and the power connector is engaged with the multiple elastic clips.

[0013] Optionally, the main body includes a handle and an air outlet, the mounting cavity is formed inside the handle, the handle is provided with an air inlet and an air outlet that are both connected to the mounting cavity, the air outlet is located at one end of the handle, and the mounting cavity is located at the other end of the handle;

[0014] The side of the air outlet duct is provided with multiple air outlet windows. The air outlet duct is installed at the end of the handle where the air outlet is located, and is connected to the mounting cavity through the air outlet, so that the fan assembly blows air outward through the air outlet and the multiple air outlet windows.

[0015] Optionally, the fan assembly includes a fan motor, a heating wire, and a main board installed in the mounting cavity;

[0016] The heating wire is disposed at one end of the fan motor near the air outlet, the main board is disposed on the side of the fan motor near the mounting port, the fan motor and the heating wire are both electrically connected to the main board, and the elastic buckle is electrically connected to the main board.

[0017] Optionally, the motherboard includes multiple sub-boards, which are arranged radially overlapping along the mounting opening. The multiple sub-boards are electrically connected to each other. The fan motor is electrically connected to at least one of the sub-boards, and the elastic clip is electrically connected to at least one of the sub-boards.

[0018] Optionally, the air inlet is located between the fan motor and the mounting port.

[0019] Optionally, the air outlet includes a fixed bracket and an air guide tube. The fixed bracket is connected to the handle, and multiple air outlet windows are formed on the side of the fixed bracket. The multiple air outlet windows are arranged circumferentially along the handle. The air guide tube is disposed inside the fixed bracket and can guide the air blown out from the air outlet along the radial direction of the handle from the air outlet windows.

[0020] Optionally, the air guide duct includes a cylindrical body and an air guide protrusion;

[0021] Multiple cylindrical components are nested layer by layer, and the space between two adjacent cylindrical components forms an air guide channel. Each cylindrical component has an air guide protrusion at the end away from the handle. The air guide protrusion protrudes from the outside of the cylindrical component. The length of the multiple cylindrical components gradually increases from the center to the edge of the air guide, so that the multiple air guide protrusions are arranged at intervals along the axial direction of the air guide.

[0022] Each of the air guide channels has a corresponding air guide protrusion at its port furthest from the handle. The air guide protrusion guides the air blown out of the air guide channel to change direction so that it can be blown out from the air outlet window.

[0023] The technical solution provided in this application has the following advantages compared with the prior art:

[0024] The hot air shroud provided in this embodiment includes a main body, a fan assembly, a flexible clip, and a power connector. The fan assembly is installed in a mounting cavity within the main body, allowing it to blow air outwards through an air outlet. The flexible clip is fixed within the mounting cavity and electrically connected to the fan assembly. One end of the main body has a mounting opening through which the power connector is rotatably inserted. The power connector is snap-fitted into the flexible clip and can rotate relative to it. When the main body rotates to wind hair, the power connector rotates relative to the main body, preventing the external power cord connected to the power connector from twisting or tangling. The flexible clip and power connector are connected by a snap-fit ​​mechanism, simplifying assembly. Furthermore, the main body only requires machining the mounting cavity and mounting opening; the power connector's rotation is achieved through the snap-fit ​​connection with the flexible clip, simplifying the machining of the main body, reducing the manufacturing and assembly difficulty of the hot air shroud, and thus lowering its cost. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the hot air duct described in the embodiment of this application;

[0028] Figure 2 This is an exploded view of the hot air duct described in an embodiment of this application;

[0029] Figure 3 This is a front sectional view of the hot air duct described in the embodiment of this application;

[0030] Figure 4 This is one of the schematic diagrams showing a partial internal structure of the hot air duct described in an embodiment of this application;

[0031] Figure 5 This is a second partial structural diagram of the interior of the hot air duct described in the embodiments of this application;

[0032] Figure 6 This is the third partial structural diagram of the interior of the hot air duct described in the embodiments of this application;

[0033] Figure 7 This is one of the exploded structural schematic diagrams of the hot air duct described in the embodiments of this application;

[0034] Figure 8 This is a second partial exploded view of the hot air duct described in the embodiments of this application;

[0035] Figure 9 This is a schematic diagram of the structure of the air guide duct described in the embodiment of this application;

[0036] Figure 10 This is a cross-sectional view of the air duct described in an embodiment of this application.

[0037] The components include: 1. Main body; 11. Handle; 12. Air outlet; 121. Fixed bracket; 122. Air guide tube; 123. Cylinder body; 124. Air guide channel; 125. Air guide protrusion; 13. Heat insulation cover; 2. Fan assembly; 21. Fan motor; 22. Heating wire; 23. Main board; 231. Sub-board; 3. Elastic buckle; 31. Base plate; 32. Elastic arm; 4. Power connector; 41. Base; 42. Rotating shaft; 43. Matching ring groove. Detailed Implementation

[0038] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0039] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0040] Reference Figures 1 to 10 As shown, the first aspect of this application provides a hot air duct, including a main body 1, a fan assembly 2, an elastic buckle 3, and a power connector 4; the main body 1 has an air outlet, and an installation cavity is formed inside the main body 1. The fan assembly 2 is installed in the installation cavity and can blow air outward through the air outlet. One end of the main body 1 is provided with an installation port communicating with the installation cavity, and the power connector 4 is rotatably inserted into the installation port; the elastic buckle 3 is fixedly disposed in the installation cavity and electrically connected to the fan assembly 2; the power connector 4 is snapped into the elastic buckle 3, and the power connector 4 can rotate relative to the elastic buckle 3 and the main body 1; the power connector 4 is used to connect an external power cord.

[0041] Specifically, the main body 1 can be a hollow cylindrical structure. One end of the main body 1 has an air outlet opening as an air outlet, and the other end has a through hole as an installation port. The internal space of the main body 1 serves as an installation cavity. The power connector 4 is cylindrical and passes through the installation port. There is a gap between the power connector 4 and the installation port so that the power connector 4 can rotate within the installation port. Alternatively, a bearing can be installed in the installation port, and the power connector 4 is connected to the inner ring of the bearing so that the power connector 4 can rotate within the installation port.

[0042] The aforementioned fan assembly 2 may include a motor, a fan wheel, and a heating wire. The fan wheel is installed inside the mounting cavity. After the fan motor drives the fan wheel to start, it can blow air out from the air outlet. The heating wire is installed between the fan wheel and the air outlet to heat the air blown out from the air outlet.

[0043] The portion of the power connector 4 exposed on the outside of the main body 1 can be fitted with a snap-fit ​​mechanism, with the external power cord engaging with the snap-fit ​​mechanism to electrically connect the external power cord to the power connector 4. Alternatively, the portion of the power connector 4 exposed on the outside of the main body 1 can be soldered to the external power cord.

[0044] The aforementioned elastic buckle 3 can be a metal buckle, allowing it to be electrically connected to the power connector 4 and the fan assembly 2. The elastic buckle 3 can have two opposing elastic arms, the distance between which is less than the width of the locking portion of the power connector 4. After the power connector 4 is inserted between the two elastic arms, the two arms, under their own elasticity, abut against both sides of the power connector 4, allowing the power connector 4 to rotate within the elastic buckle 3 by overcoming friction with the elastic arms.

[0045] Alternatively, the power connector 4 can be an elastic ring structure. The power connector 4 is a cylinder, and the diameter of the ring structure is slightly smaller than the diameter of the power connector 4 used for the snap-fit ​​position. The power connector 4 is inserted into the ring structure, and the ring structure elastically deforms and abuts against the outer circumference of the power connector 4. The power connector 4 can rotate relative to the elastic snap 3 by overcoming the friction between it and the ring structure.

[0046] The elastic clip 3 can be fixed to the inner wall of the mounting cavity and electrically connected to the fan assembly 2 using a wire. Alternatively, the elastic clip 3 can be welded to the fan assembly 2 or connected by bolts to make the elastic clip 3 electrically connected to the fan assembly 2.

[0047] When the hot air gun provided in this embodiment is used, the user rotates the main body 1 so that the hair is wrapped around the outside of the main body 1. At this time, the main body 1 drives the elastic buckle 3 to rotate synchronously, and the power connector 4 rotates relative to the elastic buckle 3 so that the power connector 4 does not rotate with the main body 1, thus avoiding the problem of the external power cord being twisted and tangled.

[0048] The hot air shroud provided in this embodiment includes a main body 1, a fan assembly 2, an elastic buckle 3, and a power connector 4. The fan assembly 2 is installed in the mounting cavity within the main body 1, allowing it to blow air outwards through the air outlet. The elastic buckle 3 is fixed within the mounting cavity and electrically connected to the fan assembly 2. One end of the main body 1 has a mounting opening through which the power connector 4 is rotatably inserted. The power connector 4 is snapped into the elastic buckle 3 and can rotate relative to it. When the main body 1 rotates to wind hair, the power connector 4 rotates relative to it, preventing the external power cord connected to the power connector 4 from twisting or tangling. The elastic buckle 3 and the power connector 4 are connected by a snap-fit ​​mechanism, simplifying assembly. Furthermore, the main body 1 only requires machining the mounting cavity and mounting opening; the power connector 4 rotates through the snap-fit ​​connection with the elastic buckle 3, simplifying the machining of the main body 1, reducing the manufacturing and assembly difficulty of the hot air shroud, and thus lowering its cost.

[0049] Reference Figures 5 to 8As shown, in some embodiments, the elastic buckle 3 includes a base plate 31 and two elastic arms 32 connected to one side of the base plate 31. The base plate 31 is fixedly connected to the mounting cavity, the two elastic arms 32 are opposite to each other and spaced apart, and the power connector 4 is snapped between the two elastic arms 32.

[0050] With this configuration, the substrate 31 and the two elastic arms 32 form a U-shaped snap-fit ​​structure, facilitating the insertion of the power connector 4 between the two elastic arms 32 and simplifying the connection between the elastic snap 3 and the power connector 4. Under the action of its own elastic force, the elastic arm 32 can always remain in contact with the power connector 4, ensuring that the power connector 4 remains electrically connected to the elastic snap 3 even when rotating relative to it.

[0051] Specifically, the substrate 31 can be a metal plate, and the two elastic arms 32 can be metal sheets. The two elastic arms 32 are arranged opposite each other on one side of the substrate 31 and spaced apart from each other, so that the two elastic arms 32 and the substrate 31 form a "U"-shaped snap-fit ​​structure. The substrate 31 can be bolted to the inner wall of the mounting cavity, or the inner wall of the mounting cavity can be provided with snap-fit, and the substrate 31 is snapped into the snap-fit ​​to fix the substrate 31 to the inner wall of the mounting cavity.

[0052] The aforementioned substrate 31 can be electrically connected to the fan assembly 2 via a wire, allowing an external power supply to be delivered to the fan assembly 2 through the power connector 4 and the elastic clip 3. The distance between the two elastic arms 32 is less than the diameter of the power connector 4. When the power connector 4 engages with the elastic clip, the power connector 4 enters the space between the two elastic arms 32 from the side away from the substrate 31, causing the two elastic arms 32 to deform in a direction away from each other. This allows the elastic arms 32 to abut against the power connector 4 under their own elastic force, ensuring that the elastic arms 32 and the power connector 4 remain electrically connected.

[0053] Reference Figures 5 to 8 As shown, in some embodiments, the power connector 4 includes a base 41 and a rotating shaft 42. The rotating shaft 42 is connected to one side of the base 41 and passes through the mounting opening. The base 41 is located outside the main body 1. The rotating shaft 42 is provided with a mating ring groove 43. Two elastic arms 32 are placed in the mating ring groove 43 and abut against the groove wall of the mating ring groove 43.

[0054] With this configuration, the pivot 42 is a cylindrical structure, facilitating its rotation relative to the elastic latch 3. The base 41 is located on the outside of the main body 1, allowing for easy electrical connection between the external power cord and the base 41. The annular groove 43 helps to restrict the position of the elastic arm 32, preventing it from disengaging from the pivot 42.

[0055] Specifically, a rotating shaft 42 is provided on one side of the base 41. The rotating shaft 42 is a cylindrical shaft. The outer circumferential surface of the rotating shaft 42 is recessed to form a mating annular groove 43. The rotating shaft 42 passes through the mounting opening and is engaged between two elastic arms 32. The elastic arms 32 are in the mating annular groove 43 on the rotating shaft 42. The elastic arms 32 abut against the bottom of the mating annular groove 43. The inner walls of the mating annular groove 43 on both sides along the axial direction of the rotating shaft 42 restrict the movement range of the elastic arms 32, ensuring that the rotating shaft 42 and the two elastic arms 32 remain engaged.

[0056] Reference Figures 5 to 8 As shown, in some embodiments, there are multiple elastic clips 3, which are arranged axially along the mounting opening, and the power connector 4 is snapped into connection with the multiple elastic clips 3.

[0057] This configuration, where the power connector 4 is engaged with multiple elastic clips 3, prevents the power connector 4 from shifting during rotation. The power connector 4 supplies power to the fan assembly 2 through the multiple elastic clips 3, avoiding the problem of overheating of the elastic clips 3 due to concentrated current.

[0058] Specifically, the number of elastic clips 3 can be selected as two or three, and the part of the power connector 4 inside the mounting cavity is engaged with multiple elastic clips 3. When the power connector 4 includes a base 41 and a rotating shaft 42, multiple elastic clips 3 are arranged at intervals along the axial direction of the rotating shaft 42, and the rotating shaft 42 is engaged with multiple elastic clips 3. The rotating shaft 42 is provided with multiple mating ring grooves 43 corresponding to the multiple elastic clips 3, and the elastic arms 32 of the multiple elastic clips 3 are engaged into the corresponding mating ring grooves 43.

[0059] Multiple elastic clips 3 are electrically connected to the fan assembly 2, so that the power connector 4 can supply power to the fan assembly 2 through the multiple elastic clips 3.

[0060] Reference Figures 1 to 4 As shown, in some embodiments, the main body 1 includes a handle 11 and an air outlet 12. The mounting cavity is formed inside the handle 11. The handle 11 is provided with an air inlet and an air outlet that are both connected to the mounting cavity. The air outlet is located at one end of the handle 11, and the mounting cavity is located at the other end of the handle 11.

[0061] The side of the air outlet 12 is provided with multiple air outlet windows. The air outlet 12 is installed at the end of the handle 11 where the air outlet is located, and is connected to the mounting cavity through the air outlet so that the fan assembly 2 blows air outward through the air outlet and multiple air outlet windows.

[0062] With this configuration, the handle 11 houses the blower assembly 2 and is used for the user to hold. The air outlet 12 wraps around the user's hair, and the hot air blown from the handle 11 is blown out through multiple air outlet windows to heat the user's hair so that the user's hair can be styled quickly.

[0063] Specifically, the handle 11 is a hollow cylindrical structure. The handle 11 can include an upper shell and a lower shell. The upper shell and the lower shell are arranged opposite to each other and connected to each other. The space between the upper shell and the lower shell forms an installation cavity. The fan assembly 2, the elastic buckle 3 and the power connector 4 are first placed in the lower shell. Then the upper shell is connected to the lower shell so that the fan assembly 2 and the elastic buckle 3 are installed in the installation cavity, and the power connector 4 is rotatably set in the installation port.

[0064] The aforementioned air outlet 12 can be a hollow cylindrical structure with multiple through holes on its side serving as air outlet windows. The air outlet 12 is connected to the end of the handle 11 with an air outlet. When the fan assembly 2 blows air towards the air outlet, the flowing air enters the air outlet 12 and is then blown out through the air outlet windows. The air outlet 12 is used to curl the user's hair, and the hot air blown out by the handle 11 through the air outlet windows allows the user's hair to be styled quickly.

[0065] The aforementioned air outlet 12 and handle 11 can be connected by snap-fit, or they can be connected by threads. The air outlet can be located at one end of the handle 11, and the air inlet can be located at the other end of the handle 11, spaced apart from the mounting opening, or it can be located on the side of the handle 11.

[0066] Reference Figures 1 to 4 As shown, in some embodiments, the fan assembly 2 includes a fan motor 21, a heating wire 22, and a main board 23 installed in the mounting cavity; the heating wire 22 is disposed at one end of the fan motor 21 near the air outlet, and the main board 23 is disposed on the side of the fan motor 21 near the mounting port. The fan motor 21 and the heating wire 22 are both electrically connected to the main board 23, and the elastic buckle 3 is electrically connected to the main board 23.

[0067] With this configuration, the motherboard 23 can control the operation of the fan motor 21, the heating wire 22 can heat the air blown out from the fan motor 21, and the fan assembly 2 is modular and easy to replace and maintain.

[0068] Specifically, the fan motor 21 is fixed in the mounting cavity by bolts or clips, the heating wire 22 is a resistance wire, the resistance wire is coiled to form a disc structure, the disc structure is set at the air outlet of the fan motor 21, and the fan motor 21 drives the air to flow through the heating wire 22 to heat the air.

[0069] The aforementioned mainboard 23 can be selected as a control circuit board. The control circuit board is electrically connected to the fan motor 21 and can control the start and stop of the fan motor 21 as well as its operating power. The elastic clip 3 is electrically connected to the mainboard 23 via a wire, so that the power connector 4 can supply power to the mainboard 23 through the elastic clip 3.

[0070] The aforementioned motherboard 23 can be equipped with control buttons. The main body 1 has a through hole through which the control buttons are exposed, allowing the user to input commands to the motherboard 23 via the control buttons. When the main body 1 includes a handle 11 and an air outlet 12, the handle 11 has a through hole through which the control buttons are exposed on the side of the handle 11.

[0071] Reference Figures 1 to 4 As shown, in some embodiments, the main board 23 includes a plurality of sub-board bodies 231, which are arranged to overlap radially along the mounting opening. The plurality of sub-board bodies 231 are electrically connected to each other. The fan motor 21 is electrically connected to at least one sub-board body 231, and the elastic buckle 3 is electrically connected to at least one sub-board body 231.

[0072] With this configuration, the multiple overlapping sub-plates 231 can reduce the length of the handle 11, reduce the material used in the handle 11, reduce the manufacturing cost of the hot air gun, and make the hot air gun miniaturized.

[0073] Specifically, the main body 1 has a cylindrical structure, with the mounting port at the end of the main body 1, and the radial direction of the mounting port is the radial direction of the main body 1. When the main body 1 includes a handle 11, multiple sub-plates 231 can be stacked radially along the handle 11. The multiple sub-plates 231 can each have different control functions, and adjacent sub-plates 231 are connected to each other through conductive blocks. Alternatively, multiple sub-plates 231 can be mounted on a bracket, and adjacent sub-plates 231 can be electrically connected through wires so that the multiple sub-plates 231 cooperate with each other to control the operation of the fan assembly 2.

[0074] Traditional single-board control boards often have a large length because they need to integrate components corresponding to different control functions. The length of the handle 11 needs to be adapted to the length of the control board; however, the control board is divided into multiple overlapping sub-boards 231, which can shorten the length of the handle 11, reduce the material used in the handle 11, and thus reduce the length of the main body 1.

[0075] Reference Figures 1 to 4 As shown, in some embodiments, the air inlet is located between the fan motor 21 and the mounting port.

[0076] With this configuration, air enters the mounting cavity through the air inlet, flows through the motherboard 23, and is then blown out through the air outlet by the fan motor 21.

[0077] Specifically, the air inlet can be set on the side of the handle 11, and the air inlet is located at the end of the fan motor 21 near the mounting port. When the user grips the handle 11, they usually grip the middle of the handle 11. Setting the air inlet close to the mounting port can prevent it from being blocked by the user.

[0078] Reference Figures 1 to 4 , Figure 9 and Figure 10As shown, in some embodiments, the air outlet duct 12 includes a fixed bracket 121 and an air guide duct 122. The fixed bracket 121 is connected to the handle 11. Multiple air outlet windows are formed on the side of the fixed bracket 121 and are arranged circumferentially along the handle 11. The air guide duct 122 is disposed inside the fixed bracket 121 and can guide the air blown out from the air outlet along the radial direction of the handle 11 from the air outlet windows.

[0079] With this configuration, the fixed bracket 121 provides a mounting base for the air duct 122, and the user's hair can be wrapped around the fixed bracket 121 to prevent the user's hair from directly contacting the air duct 122; the air duct 122 changes the direction of airflow, so that the air blown out along the axial direction of the handle 11 can be blown out from the air outlet window along the radial direction of the handle 11, ensuring that most of the hot air can directly heat the user's hair and make the hair quickly styled.

[0080] Specifically, the fixed bracket 121 is a hollow bracket structure, which forms multiple air outlet windows on the side of the fixed bracket 121, and the multiple air outlet windows are arranged around the axis of the handle 11.

[0081] The aforementioned air guide duct 122 can be a block structure. The air guide duct 122 has through holes inside, and the channel is an L-shaped curved channel, so that the channel forms an air inlet at one end of the air guide duct 122 and an air outlet at the side of the air guide duct 122. The air blown out from the air outlet enters from the air inlet and is blown out from the air outlet, so that the air guide duct 122 changes the direction of air flow.

[0082] A heat insulation cover 13 can be installed at the end of the fixed bracket 121 away from the handle 11. The heat insulation cover 13 can be made of a material with low thermal conductivity, such as ceramic or silicone. The user can hold the heat insulation cover 13 with one hand and grasp the handle 11 with the other hand to rotate the hot air gun, which improves the ease of operation and stability of rotating the hot air gun.

[0083] Reference Figures 1 to 4 , Figure 9 and Figure 10 As shown, in some embodiments, the air guide 122 includes a cylindrical body 123 and an air guide protrusion 125;

[0084] Multiple cylindrical components 123 are nested layer by layer, and the space between two adjacent cylindrical components 123 forms an air guide channel 124. Each cylindrical component 123 has an air guide protrusion 125 at the end away from the handle 11. The air guide protrusion 125 protrudes from the outside of the cylindrical component 123. The length of the multiple cylindrical components 123 gradually increases from the center to the edge of the air guide tube 122, so that the multiple air guide protrusions 125 are arranged at intervals along the axial direction of the air guide tube 122.

[0085] At the port of each air guide channel 124 away from the handle 11, there is a corresponding air guide protrusion 125. The air guide protrusion 125 guides the air blown out by the air guide channel 124 to change direction so that it can be blown out from the air outlet window.

[0086] With this configuration, multiple cylindrical components 123 cooperate to form multiple air guide channels 124, causing the air guide protrusions 125 to change the direction of airflow. The multiple air guide protrusions 125 are arranged along the axial direction of the air guide tube 122, so that hot air can be blown out from all positions along the axial direction of the air guide tube 122, thereby improving the uniformity of airflow from the air outlet tube 12 and enabling the air outlet tube 12 to evenly heat the hair wrapped around the air outlet tube 12.

[0087] Specifically, the main body of the cylindrical component 123 is a cylindrical structure. One end of the cylindrical structure is bent outward to form a guide protrusion 125. After multiple cylindrical components 123 are nested layer by layer, the diameter of the multiple cylindrical components 123 gradually increases from the innermost layer to the outermost layer, and the length of the multiple cylindrical structures gradually increases from the innermost layer to the outermost layer. The cylindrical component 123 with the smallest diameter has the longest length, and the cylindrical component 123 with the largest diameter has the shortest length. The ends of the multiple cylindrical components 123 away from the skirt are set flat, so that the multiple skirts are arranged along the axial direction of the cylindrical components 123. The space between two adjacent cylindrical components 123 forms a guide channel 124. The end of the guide channel 124 away from the handle 11 has a guide protrusion 125. After the air is blown out from the guide channel 124, it flows along the guide protrusion 125, thereby changing the direction of air flow so that the air is blown out radially along the handle 11.

[0088] Each pair of adjacent cylindrical components 123 is connected to each other by stiffening plates, so that multiple cylindrical components 123 are connected to form a whole, and the relative positions of multiple cylindrical components 123 are fixed. The stiffening plates can also divide the air guide channel 124 into multiple areas.

[0089] When using the hot air gun provided in this application embodiment, the user holds the heat insulation cover 13 with one hand and the handle 11 with the other hand. Rotating the handle 11 causes the hair to wrap around the outside of the fixed bracket 121. During the rotation of the handle 11, the elastic buckle 3 rotates, and the power connector 4 rotates relative to the elastic buckle 3 to avoid the problem of the external power cord being twisted and tangled.

[0090] The user presses a button to start the fan motor 21 controlled by multiple sub-boards 231. After the fan motor 21 starts, it drives the air through the heating wire 22 and blows hot air out through the air outlet. The hot air blown out of the air outlet enters the air guide channel 124. After the hot air is blown out of the air guide channel 124, it is guided by the air guide protrusion 125 and blown out of the air outlet window. The hot air heats the hair wrapped around the outside of the air outlet 12 so that the hair can be quickly styled.

[0091] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0092] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hot-air gun, characterized by comprising: It includes a main body (1), a fan assembly (2), a flexible buckle (3), and a power connector (4); An air outlet is formed on the main body (1), and an installation cavity is formed inside the main body (1). The fan assembly (2) is installed in the installation cavity and can blow air outward through the air outlet. One end of the main body (1) is provided with an installation port that communicates with the installation cavity. The power connector (4) is rotatably inserted into the installation port. The elastic buckle (3) is fixedly installed in the mounting cavity and electrically connected to the fan assembly (2); The power connector (4) is snapped into the elastic buckle (3), and the power connector (4) can rotate relative to the elastic buckle (3) and the main body (1); The power connector (4) is used to connect an external power cord.

2. The heat gun according to claim 1, wherein The elastic buckle (3) includes a base plate (31) and two elastic arms (32) connected to one side of the base plate (31). The base plate (31) is fixedly connected to the mounting cavity. The two elastic arms (32) are arranged opposite to each other and spaced apart. The power connector (4) is snapped between the two elastic arms (32).

3. The hot air duct according to claim 2, characterized in that, The power connector (4) includes a base (41) and a rotating shaft (42). The rotating shaft (42) is connected to one side of the base (41). The rotating shaft (42) passes through the mounting opening, and the base (41) is located outside the main body (1). The rotating shaft (42) is provided with a mating ring groove (43). Two elastic arms (32) are placed in the mating ring groove (43), and the elastic arms (32) abut against the groove wall of the mating ring groove (43).

4. The hot air duct according to claim 1, characterized in that, The number of elastic buckles (3) is multiple, and the multiple elastic buckles (3) are arranged along the axial direction of the mounting port. The power connector (4) is snapped into connection with the multiple elastic buckles (3).

5. The hot air duct according to claim 1, characterized in that, The main body (1) includes a handle (11) and an air outlet (12). The mounting cavity is formed inside the handle (11). The handle (11) is provided with an air inlet and an air outlet that are both connected to the mounting cavity. The air outlet is located at one end of the handle (11), and the mounting cavity is located at the other end of the handle (11). The side of the air outlet duct (12) is provided with multiple air outlet windows. The air outlet duct (12) is installed at the end of the handle (11) where the air outlet is located, and is connected to the mounting cavity through the air outlet so that the fan assembly (2) blows air outward through the air outlet and multiple air outlet windows.

6. The hot air duct according to claim 5, characterized in that, The fan assembly (2) includes a fan motor (21), a heating wire (22), and a main board (23) installed in the mounting cavity; The heating wire (22) is located at one end of the fan motor (21) near the air outlet, and the main board (23) is located on the side of the fan motor (21) near the mounting port. The fan motor (21) and the heating wire (22) are both electrically connected to the main board (23), and the elastic buckle (3) is electrically connected to the main board (23).

7. The hot air duct according to claim 6, characterized in that, The main board (23) includes a plurality of sub-board bodies (231), which are arranged to overlap radially along the mounting port. The plurality of sub-board bodies (231) are electrically connected to each other. The fan motor (21) is electrically connected to at least one of the sub-board bodies (231), and the elastic buckle (3) is electrically connected to at least one of the sub-board bodies (231).

8. The hot air duct according to claim 6, characterized in that, The air inlet is located between the fan motor (21) and the mounting port.

9. The hot air duct according to claim 5, characterized in that, The air outlet (12) includes a fixed bracket (121) and an air guide (122). The fixed bracket (121) is connected to the handle (11). Multiple air outlet windows are formed on the side of the fixed bracket (121) and are arranged circumferentially along the handle (11). The air guide (122) is disposed inside the fixed bracket (121) and can guide the air blown out from the air outlet along the radial direction of the handle (11) from the air outlet windows.

10. The hot air duct according to claim 9, characterized in that, The air guide duct (122) includes a cylindrical body (123) and an air guide protrusion (125); Multiple cylindrical components (123) are nested layer by layer, and the space between two adjacent cylindrical components (123) forms an air guide channel (124). Each cylindrical component (123) has an air guide protrusion (125) at one end away from the handle (11). The air guide protrusion (125) protrudes from the outside of the cylindrical component (123). The length of the multiple cylindrical components (123) gradually increases from the center to the edge of the air guide tube (122) so that the multiple air guide protrusions (125) are arranged at intervals along the axial direction of the air guide tube (122). Each of the air guide channels (124) has a corresponding air guide protrusion (125) at the port away from the handle (11). The air guide protrusion (125) guides the air blown out by the air guide channel (124) to change direction so that it is blown out from the air outlet window.

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