Hair curler

Abstract

The utility model relates to the technical field of household appliances discloses a curler, including curling tube, its inside is formed with curling passageway, and the side of curling tube is equipped with hot -blast inlet, handle, one end rotates and connects at the hot -blast inlet department of curling tube side through pivot connection subassembly, hot -blast device sets up in handle. When curler is in the use state, handle can keep in any use position between the included angle of the central axis of handle and the central axis of curling tube body under the action of pivot connection subassembly, and the included angle is equal to or less than 90 DEG, when curler is in the storage state, handle can keep in the storage position of the central axis of handle and the central axis of curling tube body parallel under the action of pivot connection subassembly. Through the design of pivot connection subassembly, makes curler can use in multi -angle when using, and folds after using, and the convenient storage, both satisfy the use need of different angle of user, and the storage of user after using is convenient.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a hair curler. Background Technology

[0002] Airflow curling irons work by creating a ring-shaped airflow on the surface of a cylindrical curling barrel with high-speed hot air. Hair that comes close to the barrel is automatically attracted to it, and the high-temperature airflow curls and sets the hair. However, existing airflow curling irons have the problem of taking up a lot of space and being inconvenient to store. Utility Model Content

[0003] In view of this, the present invention provides a hair curler to solve the problems of large space occupation and inconvenient storage of existing airflow hair curlers.

[0004] This utility model provides a hair curler, including: The hair curler has a hair curling channel inside. One end of the hair curler is configured as a hair intake port and the other end is configured as an air outlet. The side of the hair curler is provided with a hot air inlet that communicates with the hair curling channel. The handle has one end rotatably connected to the hot air inlet on the side of the curling tube via a pivoting connection assembly, and the other end is provided with an air inlet. The pivoting connection assembly connects the inner cavity of the handle and the hot air inlet. A hot air device is installed inside the handle. The hot air device is used to convert the airflow entering from the air inlet into hot air and deliver the hot air through the hot air inlet into the curling channel to form a spiral hot airflow in the curling channel. The curling iron has two states: in use and in storage. When the curling iron is in use, the handle can be held in any position with an angle ≤90° between the central axis of the handle and the central axis of the curling barrel, thanks to the action of the pivoting connection assembly. When the curling iron is in the retracted position, the handle can be kept in a retracted position with the central axis of the handle parallel to the central axis of the curling barrel, thanks to the pivoting connection component.

[0005] Beneficial effects: The design of the aforementioned pivoting connection component allows the curling iron to be used at multiple angles and folded for easy storage after use. This satisfies users' needs for use from different angles while also facilitating storage. Furthermore, when the curling iron is folded, the central axis of the handle is parallel to the central axis of the barrel body, resulting in a smaller overall size and reducing packaging volume and transportation costs.

[0006] In one alternative implementation, the pivot connection assembly includes: The first adapter is fixedly installed on the side of the hair curling tube. The first adapter has a first adapter interface, which is connected to the hot air inlet. The second adapter is fixedly mounted on the handle. The second adapter has a second adapter interface, which is connected to the end of the handle. The second adapter is rotatably connected to the first adapter. A corrugated pipe is disposed between the first adapter and the second adapter, and its two ends are respectively connected to the first adapter interface and the second adapter interface.

[0007] Beneficial effects: By setting a first adapter and a second adapter on the curling barrel and the handle respectively, and setting a corrugated tube between the first adapter and the second adapter, the handle and the curling barrel can be rotated and connected, while ensuring that the airflow between the handle and the curling barrel is normal and smooth.

[0008] In one alternative implementation, the pivot connection assembly further includes: The rotating shaft has a shaft hole on the first adapter and is fixedly mounted on the second adapter, with the rotating shaft rotatably connected in the shaft hole.

[0009] Beneficial effects: By setting a rotating axis, the first and second adapters can rotate around the rotating axis as the rotation center, thereby achieving the technical effect of using the curling iron and handle at any angle between 0 and 90°.

[0010] In one alternative embodiment, the first adapter includes an adapter housing with a receiving cavity, and a bellows is disposed within the receiving cavity; The adapter housing has openings at both ends. One end of the adapter housing forms the first adapter interface, and the other end is open for the bellows to extend out.

[0011] Beneficial effects: The bellows is set in the receiving cavity of the adapter housing, which can hide and protect the bellows, and at the same time avoid the problem of the bellows interfering with other components when the handle is turned. The adapter housing is designed with openings at both ends, which facilitates docking and connection with the curling iron, and also facilitates the connection of the bellows with the second adapter.

[0012] In one alternative implementation, the second adapter includes: End wall, with a second adapter provided on the end wall; Two connecting sidewalls are fixedly installed on opposite sides of the end wall, and the two connecting sidewalls are rotatably connected to the opposite outer sides of the adapter housing.

[0013] Beneficial effects: The second adapter, with its U-shaped end wall and two connecting side walls, facilitates rotational connection with the first adapter while allowing for clearance and preventing interference with the first adapter during rotation.

[0014] In one alternative embodiment, a recess is provided on the outer wall of the adapter housing; When the central axis of the handle is perpendicular to the central axis of the drum body, the connecting sidewall is placed in the recess and matches the contour of the recess.

[0015] Beneficial effects: The recessed part on the outer wall of the adapter housing allows the curling iron to be more stably maintained in the position when the central axis of the handle is perpendicular to the central axis of the curling barrel. During use, the user can hold the handle with one hand to operate the main unit and put the hair into the curling barrel with the other hand, which is convenient for consumers and improves the user experience.

[0016] In one alternative implementation, the hair curling tube includes: The main body of the drum has a hot air inlet on the side; The interface structure is fixedly installed on the side of the drum body and located on the outer periphery of the hot air inlet. The pivot connection assembly is connected between the interface structure and the handle.

[0017] Beneficial effect: The interface structure facilitates the connection between the curling iron and the pivot connection component.

[0018] In one alternative embodiment, the hair curling tube further includes: The air inlet duct is fixedly installed inside the interface structure. The air inlet end of the air inlet duct is connected to the first pivot interface of the pivot connection component, and the air outlet end is connected to the hot air inlet. The angle between the central axis of the air inlet duct and the central axis of the drum body is α, and α is less than 90°.

[0019] Beneficial effects: By placing the air inlet duct within the interface structure, the air inlet duct can be concealed, improving aesthetics. The central axis of the air inlet duct is connected to the central axis of the curling barrel at an angle, with the angle α set to 0° < α < 90°. This facilitates the high-speed hot airflow generated by the hot air device entering the curling barrel and forming an impulsive force towards the air outlet, thus creating a spiral airflow to achieve the technical effect of airflow curling, while preventing the hot airflow from escaping from the hair inlet.

[0020] In one alternative implementation, the roll body includes: outer cylinder; The inner tube is set inside the outer tube, and a curling channel is formed between the outer tube and the inner tube. The outer tube is equipped with a hot air inlet.

[0021] Beneficial effects: The airflow of the curling iron enters through the air inlet at the end of the handle and exits through the air outlet at the end of the curling barrel. During use, hair is drawn in through the hair inlet at the top of the curling barrel. Driven by the hot air device, the high-speed hot airflow is blown into the curling channel formed by the inner and outer barrels. The hair is shaped in the spiral airflow, achieving the technical effect of spiraling hair into curls. Because the inner and outer barrels constrain the airflow, there is very little airflow escape, and there will be no flyaways during the curling process. Moreover, since the airflow is blown out from the air outlet at the bottom of the curling barrel, it will not blow directly on the user, resulting in a better user experience. This effectively solves the problems of hot airflow blowing into the user and flyaways in existing curling irons.

[0022] In one alternative embodiment, the hot air device includes: The heating element is located inside the handle; The fan, located inside the handle, draws air from the external environment into the handle through the air inlet and directs it to the heating element. The heated air is then blown into the curling channel through the air inlet duct.

[0023] Beneficial effects: By placing both the heating element and the fan inside the handle, the center of gravity of the curling iron is placed on the handle, resulting in a better user experience. Furthermore, having the heating element and fan inside the handle facilitates connection to external circuits and makes it easy to detach the handle from the curling barrel. It also avoids the problem of the heating element being inside the curling barrel, which could easily burn the hair. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the hair curler (without a pivot connection component) in use according to an embodiment of the present utility model; Figure 2 for Figure 1 A sectional view; Figure 3 for Figure 1 Schematic diagram of airflow direction in a medium-length curling iron; Figure 4 This is a schematic diagram of the structure of the hair curler (with a pivot connection assembly) in use (where the handle and the curling barrel are perpendicular) in this embodiment of the present invention; Figure 5This is a schematic diagram of the curling iron (with a pivot connection component) in the storage state in an embodiment of the present utility model; Figure 6 This is a structural schematic diagram of the hair curling tube at one angle in an embodiment of this utility model; Figure 7 for Figure 6 Top view; Figure 8 for Figure 6 Axonometric sectional view; Figure 9 for Figure 8 Another structural diagram from a different perspective; Figure 10 for Figure 6 A sectional view; Figure 11 This is a cross-sectional view of the outer cylinder (including the air inlet duct and interface structure) at the center line position in an embodiment of this utility model; Figure 12 This is a structural schematic diagram of the outer cylinder from the air inlet end of the air inlet duct in an embodiment of the present invention; Figure 13 This is a cross-sectional view of the outer cylinder (including the air inlet duct and interface structure) in an embodiment of the present invention at a position off-center; Figure 14 A magnified view of the simulated airflow effect at the air intake duct (top view). Figure 15 An enlarged view of the simulated airflow effect at the air inlet duct (frontal view); Figure 16 This is a simulation diagram of the airflow of the entire machine; Figure 17 An airflow simulation diagram showing that the tail end of the hair curler in this embodiment of the present invention has a set drop. Figure 18 This is a simulation diagram of airflow in an embodiment of the present invention where the tail end of the curling tube does not have a set drop (i.e., the tail ends of the inner and outer tubes are flush). Figure 19 This is an exploded view of the pivot connection assembly in an embodiment of this utility model.

[0026] Explanation of reference numerals in the attached figures: 1. Hair curling iron; 100. Hair curling channel; 101. Hair intake inlet; 102. Air outlet; 10. Roll body; 11. Outer cylinder; 110. Hot air inlet; 111. Outer cylinder; 112. Inner cylinder; 113. Trumpet-shaped structure; 12. Inner cylinder; 120. Spherical structure; 13. Air inlet duct; 131. Air inlet end; 132. Air outlet end; 14. Interface structure; 15. Connecting bars; 2. Handle; 200. Air inlet; 3. Fan; 4. Heating element; 5. Control panel; 6. Pivot connection assembly; 61. First adapter; 610. Shaft hole; 611. Recess; 62. Second adapter; 63. Bellows; 64. Rotating shaft. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0031] The following is combined Figures 1 to 19 The following describes embodiments of the present invention.

[0032] According to the embodiments of this utility model, in conjunction with Figures 1 to 5 , Figure 19As shown, this utility model provides a hair curler, including a curling tube 1, a handle 2, and a hot air device. The curling tube 1 has a curling channel 100 inside. One end of the curling tube 1 is configured as a hair inlet 101, and the other end is configured as an air outlet 102. The side of the curling tube 1 is provided with a hot air inlet 110 communicating with the curling channel 100. One end of the handle 2 is rotatably connected to the hot air inlet 110 on the side of the curling tube 1 through a pivoting connection assembly 6, and the other end is provided with an air inlet 200. The pivoting connection assembly 6 connects the inner cavity of the handle 2 and the hot air inlet 110. The hot air device is disposed in the handle 2. The hot air device is used to convert the airflow entering from the air inlet 200 into hot air and deliver the hot air to the curling channel 100 through the hot air inlet 110 to form a spiral hot airflow in the curling channel 100.

[0033] The hair curler has a working state and a stored state: When the hair curler is in the working state, the handle 2 can be held in any working position with an angle ≤90° between the central axis of the handle 2 and the central axis of the curling barrel 1 under the action of the pivot connecting component 6; when the hair curler is in the stored state, the handle 2 can be held in a stored position with the central axis of the handle 2 parallel to the central axis of the curling barrel 1 under the action of the pivot connecting component 6.

[0034] The design of the pivot connection component 6 allows the curling iron to be used at multiple angles and folded for easy storage after use, satisfying the user's needs for use from different angles while also facilitating storage. Furthermore, when the curling iron is in its stored state, the central axis of the handle 2 is parallel to the central axis of the main body 10 of the curling iron, resulting in a smaller overall size and reducing packaging volume and transportation costs. Additionally, by placing the hot air device inside the handle 2, hot air can be introduced from outside the curling iron 1, avoiding the risk of hair burns caused by placing the hot air device directly inside the curling iron 1.

[0035] In one optional embodiment, the pivot connection assembly 6 includes a first adapter 61, a second adapter 62, and a bellows 63. The first adapter 61 is fixedly disposed on the side of the curling tube 1 and has a first adapter interface that communicates with the hot air inlet 110. The second adapter 62 is fixedly disposed on the handle 2 and has a second adapter interface that connects to the end of the handle 2. The second adapter 62 is rotatably connected to the first adapter 61. The bellows 63 is disposed between the first adapter 61 and the second adapter 62 and is connected at both ends to the first adapter interface and the second adapter interface, respectively.

[0036] In the above embodiment, by providing a first adapter 61 and a second adapter 62 on the hair curler 1 and the handle 2 respectively, and a corrugated pipe 63 between the first adapter 61 and the second adapter 62, the handle 2 and the hair curler 1 can be rotatably connected, while ensuring that the airflow between the handle 2 and the hair curler 1 is normal and smooth.

[0037] Based on the above embodiments, as a further defined embodiment, the first adapter 61 can be fixed to the curling tube 1 by means of adhesive bonding, snap-fitting, screw connection, etc., and the second adapter 62 can be fixed to the handle 2 by means of adhesive bonding, snap-fitting, screw connection, etc. The two ends of the corrugated tube 63 can be fixed to the first adapter interface and the second adapter interface by means of clamping, adhesive bonding, etc.

[0038] In some embodiments, the first adapter 61 is rotated and engaged with the hair curler 1, and the second adapter 62 is rotated and engaged with the handle 2.

[0039] In one alternative embodiment, the pivot connection assembly 6 further includes a rotating shaft 64, the first adapter 61 is provided with a shaft hole 610, the rotating shaft 64 is fixedly disposed on the second adapter 62, and the rotating shaft 64 is rotatably connected in the shaft hole 610.

[0040] In the above embodiment, the first adapter 61 and the second adapter 62 can rotate around the rotating shaft 64 as the rotation center, thereby achieving the technical effect of using the curling iron 1 and the handle 2 at any angle between 0 and 90°.

[0041] Based on the above embodiments, as a further defined embodiment, the central axis of the drum body 10 extends vertically, and the central axis of the rotating shaft 64 extends horizontally. The central axis of the rotating shaft 64 is perpendicular to both the central axis of the drum body 10 and the central axis of the handle 2. In one optional embodiment, the first adapter 61 includes an adapter housing with a receiving cavity, and a bellows 63 is disposed in the receiving cavity; the adapter housing has openings at opposite ends, with one end opening forming a first adapter interface and the other end opening for the bellows 63 to extend out.

[0042] In the above embodiment, the bellows 63 is set in the receiving cavity of the adapter housing, which can hide and protect the bellows 63, and at the same time avoid the problem of the bellows 63 interfering with other components when the handle 2 is turned. The adapter housing is set with openings at both ends, which facilitates docking and communication with the hair curler 1, and also facilitates the connection of the bellows 63 with the second adapter 62.

[0043] In one optional embodiment, the second adapter 62 is U-shaped and includes an end wall and two connecting side walls. The end wall is provided with a second adapter interface. The two connecting side walls are fixedly disposed on opposite sides of the end wall and are rotatably connected to opposite outer sides of the adapter housing.

[0044] In the above embodiment, the second adapter 62 adopts a design with a U-shaped end wall and two connecting side walls, which facilitates rotational connection with the first adapter 61 and allows for clearance to avoid interference with the first adapter 61 during rotation.

[0045] In one alternative embodiment, a recess 611 is provided on the outer wall of the adapter housing; when the central axis of the handle 2 is perpendicular to the central axis of the curling tube 1, the connecting side wall is placed in the recess 611 and matches the contour of the recess 611.

[0046] In the above embodiment, the recessed portion 611 provided on the outer wall of the adapter housing enables the hair curler to be more stably maintained in the position when the central axis of the handle 2 is perpendicular to the central axis of the curling body 10. During use, the user can hold the handle 2 with one hand to operate the main unit and put the hair into the curling tube 1 with the other hand, which is convenient for consumers and improves the user experience.

[0047] In one optional embodiment, a friction plate or damping structure is provided between the first adapter 61 and the second adapter 62, so that the first adapter 61 and the second adapter 62 can be held more stably at a set angle position. For example, a friction plate can be provided between the rotating shaft 64 and the shaft hole 610.

[0048] In other alternative embodiments, positioning protrusions can be provided at intervals on the outer periphery of the rotating shaft 64, and multiple positioning grooves can be provided at intervals on the inner periphery of the shaft hole 610. The positioning protrusions and positioning grooves enable the curling tube 1 and the handle 2 to stay at any angle between 0 and 90°.

[0049] In one optional embodiment, the hair curler 1 includes a curler body 10, and a hot air inlet 110 is provided on the side of the curler body 10; the hair curler 1 also includes an interface structure 14, which is fixedly disposed on the side of the curler body 10 and located on the outer periphery of the hot air inlet 110, and a pivot connection assembly 6 is connected between the interface structure 14 and the handle 2.

[0050] In the above embodiment, the interface structure 14 facilitates the connection between the hair curler 1 and the pivot connection component 6.

[0051] Specifically, the interface structure 14 includes an interface body in the shape of a frustum or approximately a frustum. The large-diameter end of the interface body is fixedly disposed on the outer peripheral wall of the drum body 10 and located on the outer periphery of the hot air inlet 110 on the drum body 10. The small-diameter end of the interface body is connected and fixed to the first adapter 61.

[0052] In one optional embodiment, the hair curler 1 further includes: an air inlet duct 13, which is fixedly disposed within the interface structure 14. The air inlet end 131 of the air inlet duct 13 is connected to the first adapter of the pivot connection assembly 6, and the air outlet end 132 is connected to the hot air inlet 110. The angle formed between the central axis of the air inlet duct 13 and the central axis of the hair curler body 10 is α, where α is less than 90°.

[0053] In the above embodiment, by placing the air inlet duct 13 within the interface structure 14, the air inlet duct 13 can also be concealed, improving aesthetics. The central axis of the air inlet duct 13 is connected to the central axis of the curling cylinder at an angle, and the angle α is set to 0° < α < 90°. This is more conducive to the high-speed hot airflow generated by the hot air device rushing into the curling cylinder 1 and forming an impact force towards the air outlet 102, thereby forming a spiral airflow and achieving the technical effect of airflow curling, while avoiding the problem of hot airflow escaping from the hair inlet 101.

[0054] In one optional embodiment, the main body 10 of the curling tube includes an outer tube 11 and an inner tube 12, with the inner tube 12 disposed inside the outer tube 11. Preferably, the outer tube 11 and the inner tube 12 are coaxially arranged, and a curling channel 100 is formed between the outer tube 11 and the inner tube 12 at intervals. The outer tube 11 is provided with a hot air inlet 110. The hair inlet 101, the air outlet 102, and the hot air inlet 110 are all connected to the curling channel 100. The side of the outer tube 11 is provided with an air inlet duct 13 that communicates with the curling channel 100. In the above embodiment, the airflow of the curling iron enters through the air inlet 200 at the end of the handle 2 and is blown out through the air outlet 102 at the end of the curling tube 1. During use, the hair is drawn in through the hair inlet 101 at the top of the curling tube 1. Driven by the hot air device, the high-speed hot airflow is blown into the curling channel 100 formed by the inner tube 12 and the outer tube 11. The hair is shaped in the spiral airflow, achieving the technical effect of the hair being spirally curled. Because the inner tube 12 and the outer tube 11 constrain the airflow, there is very little airflow escape, and no flyaways occur during the curling process. Moreover, since the airflow is blown out from the air outlet 102 at the bottom of the curling tube 1, it will not blow directly into the user, resulting in a better user experience. This effectively solves the problem of hot airflow blowing into the user and flyaways in the curling iron of the prior art.

[0055] In one alternative embodiment, the distance between the central axis of the air inlet duct 13 and the central axis of the outer cylinder 11 gradually decreases from the end of the hair curler 1 where the hair inlet 101 is located toward the end where the air outlet 102 is located.

[0056] Through the above design, when the high-speed hot airflow enters the curling channel 100, it will generate a downward force from the first end to the second end, ensuring that the airflow has a downward momentum component, thus smoothly blowing out from the lower air outlet 102 and avoiding the problem of hot air blowing into people. At the same time, when the high-speed hot airflow enters the curling channel 100 along the inclined air inlet duct 13, the static pressure near the connection point between the air inlet duct 13 and the curling channel 100 decreases due to the increased airflow speed, falling below the external atmospheric pressure and forming a pressure difference. This pressure difference drives the air around the hair inlet 101, including the hair inside, to flow towards the low-pressure area, thereby producing an automatic hair-drawing effect, allowing the hair to enter the curling channel 100 more smoothly, facilitating hair winding and styling.

[0057] In one optional embodiment, the air inlet duct 13 along the airflow direction has an air inlet end 131 and an air outlet end 132; the cross-sectional area of ​​the air outlet end 132 of the air inlet duct 13 is smaller than the cross-sectional area of ​​the air inlet end 131 of the air inlet duct 13. By designing the air inlet duct 13 as a converging duct (i.e., the cross-sectional area of ​​the air inlet end 131 is large and the cross-sectional area of ​​the air outlet end 132 is small), the high-speed hot airflow forms a Venturi effect after passing through the air inlet duct 13, accelerating the hot airflow blown out by the hot air device, achieving the technical effect of high-speed airflow pressurization, so that the hot airflow has a higher initial wind speed when entering the curling channel 100, thereby forming a high-speed, stable airflow with sufficient pressure, which is more conducive to the airflow entering the curling tube 1, ensuring that the airflow can overcome resistance and smoothly enter the curling tube 1, and effectively penetrate and wrap the hair bundle, thereby efficiently adsorbing the hair onto the curling tube 1, and achieving a fast and uniform heating and styling effect, shortening the hair styling time, improving the hair styling effect, and providing a better user experience.

[0058] In one alternative embodiment, the cross-sectional area of ​​the air inlet duct 13 gradually decreases from the air inlet end 131 to the air outlet end 132.

[0059] In the above embodiment, the cross-sectional area of ​​the air inlet duct 13 is designed to gradually decrease from the air inlet end 131 to the air outlet end 132, so as to avoid the hot air flow in the air inlet duct 13 from becoming turbulent, thereby improving the smoothness of the hot air flow in the air inlet duct 13.

[0060] In one optional embodiment, the cross-sectional area of ​​the air inlet end 131 of the air inlet duct 13 is S1, and the cross-sectional area of ​​the air outlet end 132 of the air inlet duct 13 is S2, where S1 > S2.

[0061] In the above embodiments, by setting the cross-sectional areas of the air inlet end 131 and the air outlet end 132 of the air inlet duct 13 within the above-mentioned ratio range, the airflow acceleration can be significantly improved, the surface adhesion of the hair curler 1 can be greatly enhanced, and the airflow concentration and stability can be better, thereby achieving faster styling speed and more durable and elastic styling effect.

[0062] In one alternative implementation, the air inlet duct 13 has a conical cylindrical structure.

[0063] In the above embodiment, the air inlet duct 13 is set as a conical cylindrical structure, which facilitates processing and forming.

[0064] In a further embodiment of the above-described embodiments, the air inlet duct 13 and the interface structure 14 are integrally formed.

[0065] In one optional embodiment, the outer cylinder 11 has a double-layer structure, including an inner cylinder 112 and an outer cylinder 111, with a cavity formed between the inner cylinder 112 and the outer cylinder 111; the hot air inlet 110 passes through the outer cylinder 111 and the inner cylinder 112, and the air outlet 132 of the air inlet duct 13 passes through the outer cylinder 111 and is connected to the hot air inlet 110 of the inner cylinder 112.

[0066] In the above embodiment, the outer tube 11 adopts a double-layer structure design, with an inner tube 112 and an outer tube 111 spaced apart to form a cavity. The outer tube 111 not only increases the diversity of the appearance of the outer tube 11, but also reduces the heat transfer efficiency, playing a role in preventing scalding and heat insulation, reducing the surface temperature of the curling tube 1, and preventing burns to the user. The inner tube 112 can provide a curling effect by restricting the movement space of the hair, and together with the inner tube 12, it achieves the technical effect of curling hair, avoiding the phenomenon of hair flying. In addition, the double-layer structure also makes the structure of the curling tube 1 more robust and reliable. Furthermore, the air outlet 132 of the air inlet duct 13 directly passes through the outer tube 111 and is inserted into the hot air inlet 110 of the inner tube 112, which can effectively prevent hot air from entering the cavity between the outer tube 111 and the inner tube 112.

[0067] In other alternative embodiments, the outer cylinder 11 can also be configured as a multi-layer structure with three, four, five, etc.

[0068] In this embodiment, by adopting a built-in hair curling method, the hair curling tube 1 adopts a structural design consisting of an inner tube 12 and an outer tube 11. The inner wall of the outer tube 11 is connected to the air inlet duct 13, and the inner tube 12 is used to fix the hair. The hair curling tube 1 has a double-tube structure consisting of an inner tube 12 and an outer tube 11, which realizes that during the hair curling process, the hair is attracted to the inner tube 12, achieving the technical effect of inward rotation and curling of the hair.

[0069] It should be noted that the number of layers of the outer tube 11 is designed to be n (n≥1), all of which are within the scope of protection of this patent. The single-layer or multi-layer outer tube 11 structure can achieve the functions of appearance and heat insulation, and can also make the structure of the hair curler 1 more robust and reliable.

[0070] In one alternative embodiment, the hot air device includes a heating element 4 and a fan 3. The heating element 4 is disposed inside the handle 2. The fan 3 is disposed inside the handle 2. The fan 3 is used to draw air from the external environment into the handle 2 through the air inlet 200 and guide it to the heating element 4. The hot air heated by the heating element 4 is blown into the curling channel 100 through the air inlet duct 13.

[0071] In the above embodiment, by placing both the heating element 4 and the fan 3 inside the handle 2, the center of gravity of the curling iron is placed on the handle 2, resulting in a better user experience. Furthermore, since the electrical components such as the heating element 4 and the fan 3 are all placed inside the handle 2, it is convenient to connect to external circuits and also convenient to detach the handle 2 from the curling barrel 1. At the same time, it can also avoid the problem of easily burning the hair when the heating element 4 is placed inside the curling barrel 1.

[0072] Based on the above embodiments, as a further defined embodiment, the heating element 4 includes, but is not limited to, a heating wire and a heating cylinder. When the heating element 4 is a heating wire, the heating wire is arranged around the inner circumference of the handle 2.

[0073] In one alternative embodiment, the heating element 4 is disposed at one end near the curling tube 1, and the fan 3 is located between the air inlet 200 and the heating element 4.

[0074] In one alternative embodiment, by placing the heating element 4 near one end of the curling cylinder 1, the hot air heated by the heating element 4 can enter the curling channel 100 with a shorter flow path, reducing heat loss and improving the curling effect. By placing the fan 3 between the air inlet 200 and the heating element 4, that is, upstream of the heating element 4 along the airflow direction, it is ensured that the air flowing through the fan 3 is at room temperature, and the fan 3 itself will not come into contact with the high-temperature airflow, thereby avoiding the thermal aging effect of the high-temperature hot air on the fan 3 components and ensuring the long-term operating performance and lifespan of the fan 3.

[0075] In one alternative embodiment, a control board 5 is also provided inside the handle 2. The control board 5 is located between the fan 3 and the heating element 4 and is electrically connected to the fan 3 and the heating element 4 respectively. In the above embodiment, by placing the control board 5 between the fan 3 and the heating element 4, it is convenient to connect to the fan 3 and the heating element 4 respectively. At the same time, by placing the control board 5 upstream of the heating element 4, damage to the control board 5 by the high-temperature airflow after it is heated can be effectively avoided, thus preventing related safety hazards.

[0076] In one alternative embodiment, the handle 2 is provided with a button for controlling the power switch and speed of the curling iron. The button is connected to the control board 5. When the button is pressed and triggered, the operation signal can be transmitted to the control board 5, which then controls the fan 3 and the heating element 4 to work.

[0077] In one alternative embodiment, the handle 2 includes a grip section and an air inlet section, the air inlet section being located at the end of the grip section away from the curling tube 1, and the air inlet 200 being a plurality of air holes arranged around the outer periphery of the air inlet section.

[0078] In the above embodiments, the grip section is designed to make it easy for users to hold, and by setting the air inlet 200 on the air inlet section, the user's hand is prevented from blocking the air inlet 200.

[0079] In one alternative embodiment, the handle 2 includes a heating element mounting section located at one end of the grip section near the curling tube 1. The heating element 4 is disposed within the heating element mounting section, which can effectively avoid the problem of the heating element 4 being too hot to handle when disposed within the grip section. The button is also disposed on the heating element mounting section for convenient user operation.

[0080] In one alternative embodiment, the end face of the inner cylinder 12 near the hair inlet 101 is configured as a guide surface that is high in the middle and low around the edges.

[0081] In the above embodiment, by constructing the side end face of the inner cylinder 12 near the hair inlet 101 as a guide surface that is high in the middle and low around the edges, it can not only increase the smoothness of hair entering the curling channel 100, making it easier for hair to enter the curling tube 1 for curling, but also facilitate the intake of airflow from the periphery of the hair inlet 101 into the curling tube 1, preventing airflow from escaping from the curling tube 1. In one alternative implementation, the guiding surface is a spherical structure 120 or a conical structure.

[0082] In the above embodiments, the guide surface adopts a spherical structure 120 or a conical structure, which not only plays a good guiding role, but also has a regular shape and is easy to process.

[0083] Alternatively, the guiding surface may be a hemispherical or conical surface.

[0084] In one alternative embodiment, the highest point of the guide surface protrudes from the side end face of the outer cylinder 11 near the hair inlet 101.

[0085] In the above embodiment, by setting the highest point of the guide surface to protrude from the side end face of the outer tube 11 near the hair inlet 101, it is not only more conducive to the airflow from the top periphery being drawn into the hair curling tube 1, but also can further increase the smoothness of the hair entering the hair curling tube 1. In addition, since users often need to precisely align the hair with a narrow inlet when using the hair curling tube 1, the highest point of the guide surface provides a clear, highest tactile feedback. Users only need to gently "drop" the hair on this highest point, and the hair will naturally slide into the curling channel 100 under the guidance of the airflow and the spherical curvature, reducing the requirements for operational precision and making the curling process faster and easier.

[0086] Preferably, the top of the hair curler 1 is a hair inlet 101, the bottom of the hair curler 1 is an air outlet 102, the guide surface adopts a spherical structure 120 to avoid the sharp corners scratching the user, and the vertex of the spherical structure 120 is higher than the top surface of the outer tube 11.

[0087] In one alternative embodiment, the end of the outer cylinder 11 near the hair inlet 101 is configured as a flared structure 113.

[0088] In the above embodiment, by setting the top of the outer tube 11 as an inclined trumpet-shaped structure 113, the area at the entrance of the hair into the curling channel 100 can be increased, expanding the "capture range" of the hair suction inlet 101, making it easier for hair to enter the curling tube for curling. Traditional straight-tube entrances are vertical planes, requiring users to precisely align and bring the hair close to the entrance, which can easily cause the hair to slip. In contrast, this application uses an inclined trumpet to form a wide guiding area. Users do not need to precisely align the hair when curling; they only need to bring the hair close to the trumpet, and it will naturally gather the scattered hair and guide it into the curling channel 100. This increases the margin for error and is especially suitable for novice or inexperienced users, improving the user experience.

[0089] In one alternative embodiment, the flared structure 113 is tilted at an angle δ relative to the horizontal plane, where 0° < δ < 90°.

[0090] In the above embodiment, by setting δ within the above angle range, the hair can be guided smoothly into the curling channel 100, and the transition between the trumpet-shaped structure 113 and the main body of the outer cylinder 11 can be smooth, reducing damage to the hair. At the same time, the airflow can be optimized and the suction can be enhanced. This can effectively avoid the problem that if δ is too large, it will hinder the hair from entering the curling channel 100 and cause severe friction between the hair and the curling channel, resulting in serious damage to the hair and causing airflow turbulence.

[0091] Preferably, 30° < δ < 60°. By setting δ within the above angle range, the curling iron can achieve a balance between "ease of use and efficiency" and "hair protection and styling effect".

[0092] In one alternative embodiment, the end of the inner cylinder 112 near the hair inlet 101 is shorter than the end of the outer cylinder 111 near the hair inlet 101, and the two are connected by a flared guide ramp.

[0093] In the above embodiment, the outer tube 11 adopts a double-layer structure design, with an inner tube 112 and an outer tube 111 spaced apart to form a cavity. The outer tube 111 not only increases the diversity of the appearance of the outer tube 11, but also reduces the heat transfer efficiency, playing a role in preventing scalding and heat insulation, lowering the surface temperature of the curling tube 1, and avoiding burns to the user. The inner tube 112 can provide a curling effect by adhering to the wall, restricting the movement space of the hair, and working together with the inner tube 12 to achieve the technical effect of curling hair, avoiding the phenomenon of hair flying everywhere. In addition, the double-layer structure also makes the structure of the curling tube 1 more robust and reliable.

[0094] In one alternative embodiment, the inner cylinder 112 and the guide ramp are smoothly connected.

[0095] In the above embodiment, the inner cylinder 112 and the guide slope are smoothly connected, which can protect the hair and reduce friction and pulling on the hair. This avoids the sharp right angle at the edge of the hair inlet 101, which would cause the hair to be subjected to concentrated and severe friction and bending at the moment of entry, resulting in damage to the hair cuticle and breakage. In some embodiments, the end of the outer cylinder 11 near the air outlet 102 is longer than the end of the inner cylinder 12 near the air outlet 102, so as to form a set drop D.

[0096] In the above embodiment, by setting the end of the outer tube 11 near the air outlet 102 to be longer than the end of the inner tube 12 near the air outlet 102, a set drop can be formed between the tail ends of the outer tube 11 and the inner tube 12 (i.e., the end near the air outlet 102). This allows the airflow to converge towards the center under the guidance and restriction of the drop section of the outer tube 11 when it flows out of the air outlet 102, and it will not spread to the surroundings. Therefore, it is less likely to blow away the hair at the ends, resulting in a better overall styling effect after curling the hair, improving the user experience, and effectively solving the problem that existing airflow curling irons blow away the hair at the ends after curling, resulting in an unsatisfactory curling effect.

[0097] In one alternative implementation, such as Figure 10As shown, the drop D is set to be between 8mm and 12mm.

[0098] In the above embodiment, by setting the drop difference between the inner cylinder 12 and the outer cylinder 11 at a distance of 8mm to 12mm, the airflow convergence effect is more obvious, and the hair is less likely to fly away after the user has finished curling the hair, which can effectively achieve the technical effect of not blowing away the hair after curling.

[0099] Preferably, the drop is set to 10mm.

[0100] In one optional embodiment, the inner cylinder 12 is a closed cylinder, and the side wall of the inner cylinder 12 near the air outlet 102 is a closed plane; the vertical distance between the closed plane and the side end face of the outer cylinder 11 near the air outlet 102 is between 8mm and 12mm.

[0101] In the above embodiment, by setting the inner tube 12 as a closed tube, hair can be effectively prevented from entering the inner tube 12 and affecting the curling effect.

[0102] In some more specific embodiments, the inner cylinder 112 and the outer cylinder 111 are fixed together at the end near the air outlet 102 by an annular end wall. The annular end wall is parallel to the closed plane, and the vertical distance between the two is between 8mm and 12mm.

[0103] In one alternative embodiment, the outer cylinder 11 and the inner cylinder 12 are connected and fixed by a connecting rib 15.

[0104] In the above embodiment, the outer cylinder 11 and the inner cylinder 12 are connected by a connecting rib 15, which not only enables the effective connection and fixation of the inner cylinder 12 and the outer cylinder 11, but also does not block the hair from entering the curling channel 100. This minimizes the obstruction of the hair during the curling process and is more conducive to achieving the technical effect of inward curling of the hair.

[0105] In some more specific and limited embodiments, the cross-sectional shape of the connecting rib 15 can be square, triangular, circular, or near-circular, etc., but this embodiment does not limit it.

[0106] In one alternative embodiment, there are multiple connecting ribs 15, which are spaced apart along the axial direction of the hair curler 1 and staggered in the circumferential direction.

[0107] In the above embodiment, by providing multiple connecting ribs 15 spaced apart along the axial direction of the hair curling tube 1, the inner tube 12 and the outer tube 11 can be fixed more securely and stably throughout the entire length direction. Furthermore, by arranging the multiple connecting ribs 15 in a staggered manner in the circumferential direction, the fixing effect of the inner tube 12 and the outer tube 11 in the circumferential direction can be further improved.

[0108] In this embodiment, the number of connecting ribs 15 n≥2. Preferably, in this embodiment, three cylindrical connecting ribs 15 are used. The three connecting ribs 15 are distributed at the upper, middle and lower positions of the hair curling tube 1 and are arranged at 120° intervals in the circumferential direction.

[0109] The working principle of the hair curler provided in this embodiment is that the hot airflow blown out by the high-speed fan 3 enters the curling channel 100 inside the hair curling tube 1 through the hot air inlet 110 on the side of the hair curling tube 1, and forms a spiral hot airflow inside the curling channel 100. The hair enters from the hair inlet 101 at one end of the hair curling tube 1, and under the action of the spiral hot airflow inside the hair curling tube 1, the hair is curled and shaped. At the same time, the hot air is blown out from the air outlet 102 at the other end of the hair curling tube 1. This effectively solves the shortcomings of manual and automatic hair curling irons on the market, such as high temperature burns, hair damage, long curling time, low efficiency, and single function. It also solves the problem of hot air blowing into the hair and hair flying strands in the current market.

[0110] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the protection scope of the embodiments of this application.

Claims

1. A hair curler, characterized in that, include: A hair curler (1) has a hair curling channel (100) inside. One end of the hair curler (1) is configured as a hair inlet (101) and the other end is configured as an air outlet (102). The side of the hair curler (1) is provided with a hot air inlet (110) that communicates with the hair curling channel (100). Handle (2), one end of the handle (2) is rotatably connected to the hot air inlet (110) on the side of the hair curler (1) via a pivot connection assembly (6), and the other end is provided with an air inlet (200), and the pivot connection assembly (6) connects the inner cavity of the handle (2) and the hot air inlet (110). A hot air device is provided in the handle (2). The hot air device is used to convert the airflow entering from the air inlet (200) into hot air and deliver the hot air to the curling channel (100) through the hot air inlet (110) to form a spiral hot airflow in the curling channel (100). The hair curler has a working state and a stored state: When the hair curler is in use, the handle (2) can be held in any position where the angle between the central axis of the handle (2) and the central axis of the hair curler (1) is ≤90° under the action of the pivot connection assembly (6); When the curling iron is in the retracted state, the handle (2) can be held in a retracted position with the central axis of the handle (2) parallel to the central axis of the curling iron (1) under the action of the pivot connection assembly (6).

2. The curling iron according to claim 1, characterized in that, The pivot connection assembly (6) includes: The first adapter (61) is fixedly disposed on the side of the hair curler (1). The first adapter (61) has a first adapter interface, which is connected to the hot air inlet (110). The second adapter (62) is fixedly mounted on the handle (2). The second adapter (62) has a second adapter interface, which is connected to the end of the handle (2). The second adapter (62) is rotatably connected to the first adapter (61). A bellows (63) is disposed between the first adapter (61) and the second adapter (62), and its two ends are respectively connected to the first adapter and the second adapter.

3. The curling iron according to claim 2, characterized in that, The pivot connection assembly (6) further includes: The rotating shaft (64) is provided with a shaft hole (610) on the first adapter (61), and the rotating shaft (64) is fixedly disposed on the second adapter (62). The rotating shaft (64) is rotatably connected in the shaft hole (610).

4. The hair curler according to claim 2, characterized in that, The first adapter (61) includes an adapter housing with an internal receiving cavity, and the bellows (63) is disposed in the receiving cavity; The adapter housing has openings at both ends, with one end opening forming the first adapter interface and the other end opening for the bellows (63) to extend out.

5. The hair curler according to claim 4, characterized in that, The second adapter (62) includes: End wall, wherein a second adapter is provided on the end wall; Two connecting sidewalls are fixedly disposed on opposite sides of the end wall, and the two connecting sidewalls are rotatably connected to the opposite outer sides of the adapter housing.

6. The hair curler according to claim 5, characterized in that, The outer wall of the adapter housing is provided with a recess (611). When the central axis of the handle (2) is perpendicular to the central axis of the curling tube (1), the connecting sidewall is placed inside the recess (611) and matches the contour of the recess (611).

7. The curling iron according to any one of claims 1 to 6, characterized in that, The hair curling tube (1) includes: The main body of the drum (10) has the hot air inlet (110) on its side. The interface structure (14) is fixedly disposed on the side of the drum body (10) and located on the outer periphery of the hot air inlet (110). The pivot connection assembly (6) is connected between the interface structure (14) and the handle (2).

8. The curling iron according to claim 7, characterized in that, The hair curler (1) also includes: An air inlet duct (13) is fixedly installed inside the interface structure (14). The air inlet end (131) of the air inlet duct (13) is connected to the first pivot interface of the pivot connection assembly (6), and the air outlet end (132) is connected to the hot air inlet (110). The angle between the central axis of the air inlet duct (13) and the central axis of the drum body (10) is α, where α is less than 90°.

9. The hair curler according to claim 7, characterized in that, The main body of the reel (10) includes: outer cylinder (11); The inner tube (12) is disposed inside the outer tube (11), and a hair curling channel (100) is formed between the outer tube (11) and the inner tube (12). The hot air inlet (110) is provided on the outer tube (11).

10. The curling iron according to any one of claims 1 to 6, characterized in that, The hot air device includes: A heating element (4) is disposed inside the handle (2); A fan (3) is installed inside the handle (2). The fan (3) is used to draw air from the external environment into the handle (2) through the air inlet (200) and guide it to the heating element (4), and blow the hot air heated by the heating element (4) into the curling channel (100).

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