Hair curling barrel and hair curler

Abstract

The utility model relates to the technical field of household appliances, disclose curling iron and curling iron, curling iron includes reel main part, and the reel main part forms curling passageway in, air inlet air duct is fixedly arranged in the side portion of reel main part, is used for conveying hot air to curling passageway, and the central axis of air inlet air duct deviates the central axis of reel main part. Through above -mentioned design, make the hot air flow in air inlet air duct can along the position close to reel main part cylinder wall enter and carry out flow, avoid hot air flow and the cylinder wall opposite side of reel main part impact and produce energy loss directly, thereby reduce the flow loss of air volume, avoid air current disorder, make in curling passageway can form a high -speed, stable, have enough pressure air current, to effectively penetrate and wrap hair bundle, realize fast, even heating and shaping effect.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to hair curling tubes and hair curlers. Background Technology

[0002] Currently, hair curlers generally come in three types: manual, automatic, and airflow curlers. Manual curlers involve manually attaching hair to a cylindrical curling barrel and using high heat to wrap the hair around the barrel for shaping. Automatic curlers involve manually attaching hair to the barrel and using a motor to rotate forward and backward to hold the hair in place, using high heat to set the style. Airflow curlers use high-speed hot air to create a ring-shaped airflow on the surface of the barrel; hair that comes close to the barrel is automatically attracted to it and curled using the high-temperature airflow.

[0003] To avoid burns and hair damage from high temperatures, airflow curling irons are now widely used in the industry. However, the main working principle of airflow curling irons is that the motor drives the fan to rotate. The fan draws in outside air, heats it into hot air through the heating element, and then delivers it to the curling channel for curling. However, the traditional air duct structure of curling irons is not designed properly, resulting in large airflow loss and affecting the curling effect. Utility Model Content

[0004] In view of this, the present invention provides a hair curling tube and hair curler to solve the problem that the airflow hair curler in the prior art has an unreasonable air duct structure design, resulting in large airflow loss and affecting the curling effect.

[0005] In a first aspect, the present invention provides a hair curling tube, comprising: The main body of the curling cylinder has a curling channel formed inside. One end of the main body of the curling cylinder is configured as a hair intake inlet and the other end is configured as an air outlet. The air inlet duct is fixedly installed on the side of the main body of the curling cylinder and is used to deliver hot air into the curling channel. The central axis of the air inlet duct is offset from the central axis of the main body of the curling cylinder.

[0006] Beneficial effects: By offsetting the central axis of the air inlet duct from the central axis of the curling tube, the hot airflow in the air inlet duct enters and flows close to the tube wall, avoiding direct impact between the hot airflow and the opposite side of the tube wall, thus reducing airflow loss and preventing airflow turbulence. This allows a high-speed, stable, and sufficiently pressurized airflow to effectively penetrate and wrap the hair strands, achieving a rapid and even heating and styling effect. Furthermore, this design allows the hot airflow to form a spiral circulation within the curling tube after exiting the air inlet duct, which is more conducive to curl styling.

[0007] In one alternative implementation, the roll body includes: The outer cylinder and the air inlet duct are fixedly installed on the side of the outer cylinder. The inner circumferential wall of the air inlet duct has an outer waist edge and an inner waist edge. The outer waist edge is located away from the central axis of the main body of the drum, and the inner waist edge is located close to the central axis of the main body of the drum. The outer waist edge is tangent to the inner circumferential wall of the outer cylinder.

[0008] Beneficial effects: By setting the outer edge of the air inlet duct to be tangential to the inner wall of the outer cylinder, the air inlet duct and the curling channel are tangentially connected. This makes it easier for the hot airflow entering from the air inlet duct to flow along the inner wall of the outer cylinder, avoiding energy loss caused by the hot airflow directly colliding with the opposite side of the outer cylinder. This improves the smoothness of the airflow from the air inlet duct to the curling channel, achieving the technical effect of reducing airflow loss and solving the problem of airflow loss when high-speed airflow enters the curling channel from the air inlet duct.

[0009] In one alternative implementation, the angle between the outer waistline and the central axis of the air intake duct is β, where 0° < β < 90°.

[0010] Beneficial effects: By setting the tangential angle between the outer waistline and the central axis of the air inlet duct to 0° < β < 90°, it is more conducive to the airflow along the inner wall of the outer cylinder, thus achieving the technical effect of reducing airflow loss.

[0011] In one alternative embodiment, the roll body further includes: The inner tube is set inside the outer tube and is coaxially arranged with the outer tube, forming a curling channel between the outer tube and the inner tube; The inner waist edge is tangent to the outer peripheral wall of the inner cylinder.

[0012] Beneficial effects: By making the inner side of the air inlet duct tangent to the outer wall of the inner tube, it is more conducive to the hot airflow entering from the air inlet duct flowing along the outer wall of the inner tube, avoiding energy loss caused by the hot airflow directly colliding with the outer wall of the inner tube, improving the smoothness of airflow from the air inlet duct to the curling channel, achieving the technical effect of reducing airflow loss, and solving the problem of airflow loss when high-speed airflow enters the curling channel from the air inlet duct.

[0013] In one alternative implementation, the angle between the inner waistline and the central axis of the air inlet duct is γ, where 0° < γ < 90°.

[0014] Beneficial effects: By setting the tangential angle between the inner waistline and the central axis of the air inlet duct to 0° < γ < 90°, it is more conducive to the airflow along the outer wall of the inner cylinder, thus achieving the technical effect of reducing airflow loss.

[0015] In one optional implementation, the angle between the central axis of the air inlet duct and the central axis of the drum body is α, where 0° < α < 90°.

[0016] Beneficial effects: The central axis of the air inlet duct is connected to the central axis of the curling barrel at an acute angle, which is conducive to the hot airflow from the air inlet duct rushing into the curling channel and forming an impact force towards the air outlet at the end of the curling barrel, 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.

[0017] In one optional embodiment, the air inlet duct has a conical structure, and the cross-sectional area of ​​the air outlet end of the air inlet duct is smaller than the cross-sectional area of ​​the air inlet end.

[0018] Beneficial effects: By designing the air inlet duct as a converging duct, the high-speed hot airflow, after passing through the air inlet duct, forms a Venturi effect, accelerating the hot airflow blown out by the hot air device. This achieves the technical effect of high-speed airflow pressurization, resulting in a higher initial wind speed when the hot airflow enters the curling channel. This creates a high-speed, stable airflow with sufficient pressure, which is more conducive to the airflow entering the curling barrel. It ensures that the airflow can overcome resistance and smoothly enter the curling barrel, effectively penetrating and wrapping the hair strands. This allows for efficient adsorption of the hair onto the curling barrel, 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.

[0019] In one alternative embodiment, the outer cylinder includes: An inner cylinder and an outer cylinder are spaced apart to form a cavity.

[0020] Beneficial effects: The outer barrel features a double-layer structure, with an inner and outer layer spaced apart to form a cavity. The outer layer not only increases the variety of the outer barrel's appearance but also reduces heat transfer efficiency, acting as a heat insulation layer to lower the surface temperature of the curling iron and prevent burns. The inner layer helps to hold the hair in place, restricting its movement and working in conjunction with the inner barrel to achieve the desired curling effect without causing flyaways. Furthermore, the double-layer structure makes the curling iron more robust and reliable.

[0021] In a second aspect, the present invention provides a hair curler, comprising the curling tube and handle of any of the above embodiments; One end of the handle is connected to the air inlet duct on the side of the drum body, and the other end is provided with an air inlet. The inner cavity of the handle is connected to the air inlet and the air inlet duct respectively. The handle is equipped with a hot air device, which is used to convert the airflow entering from the air inlet into hot air and deliver the hot air through the air inlet duct to the curling channel to form a spiral hot airflow in the curling channel.

[0022] 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 through the air inlet duct 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.

[0023] In one optional embodiment, a hot air inlet is provided on the side of the drum body, and an interface structure is fixedly provided on the drum body located on the outer periphery of the hot air inlet, and the interface structure is fixedly connected to the handle. The air inlet duct is fixedly installed inside the interface structure. The air inlet end of the air inlet duct is connected to the inner cavity of the handle, and the air outlet end is connected to the hot air inlet.

[0024] Beneficial effects: The interface structure facilitates the connection between the curling iron and the handle, and by placing the air intake duct within the interface structure, the air intake duct can be hidden, improving aesthetics. Attached Figure Description

[0025] 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.

[0026] Figure 1 This is a schematic diagram of a hair curler in use according to one 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 a hair curler in a stored state according to one embodiment of the present utility model. Figure 5 for Figure 4A sectional view; 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 centerline 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 intake 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 a cross-sectional view of the hair curling cylinder at the center line of the air inlet duct in an embodiment of this utility model.

[0027] Explanation of reference numerals in the attached figures: 1. Hair curling tube; 1a. Outer tangent; 1b. Inner tangent; 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; 133. Outer side edge; 134. Inner side edge; 14. Interface structure; 15. Connecting bars; 2. Handle; 200. Air inlet; 3. Fan; 4. Heating element; 5. Control panel; 6. Adapter components. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] Traditional airflow curling irons typically use a straight air duct to deliver hot air, which cannot provide secondary acceleration to the base hot air blown from the main unit. This results in insufficient airflow speed and low kinetic energy, making it difficult for the airflow to effectively penetrate and wrap around the hair strands. Consequently, the hot air cannot penetrate the hair quickly and evenly, requiring a longer time to set the style and causing inconsistent styling results, which seriously affects the user experience. The following is combined Figures 1 to 19 The following describes embodiments of the present invention.

[0033] According to an embodiment of the present invention, in a first aspect, the present invention provides a hair curling tube 1, including a tube body 10, a hair curling channel 100 formed inside the tube body 10, one end of the tube body 10 being configured as a hair inlet 101 and the other end being configured as an air outlet 102; the hair curling tube 1 also includes an air inlet duct 13, which is fixedly disposed on the side of the tube body 10 and is used to deliver hot air into the hair curling channel 100, the central axis of the air inlet duct 13 being offset from the central axis of the tube body 10.

[0034] In the above embodiment, by setting the central axis of the air inlet duct 13 to be offset from the central axis of the curling tube body 10, the hot airflow in the air inlet duct 13 can enter and flow along a position close to the tube wall of the curling tube body 10. This avoids the hot airflow directly colliding with the opposite side of the tube wall of the curling tube body 10, resulting in energy loss, thereby reducing airflow loss and avoiding airflow turbulence. This allows a high-speed, stable airflow with sufficient pressure to be formed within the curling channel 100, effectively penetrating and wrapping the hair strands, achieving a rapid and uniform heating and styling effect. Furthermore, the above arrangement allows the hot airflow to form a spiral circulation within the curling channel 100 after exiting the air inlet duct 13, which is more conducive to curling styling.

[0035] In some more specific embodiments, the drum body 10 includes a first drum wall section located on the opposite side of the air inlet duct 13, and a second drum wall section located between the air inlet duct 13 and the first drum wall section. There are two second drum wall sections, which are located on both sides of the first drum wall section, and the central axis of the air inlet duct 13 is biased to the second drum wall section on either side.

[0036] Specifically, the main body 10 of the drum is cylindrical, and its cross-section is circular. The first section of the drum wall 10 is located opposite the outlet end 132 of the air inlet duct 13, corresponding to the portion of the side wall of the drum body 10 with a chord width equivalent to the inlet end 131 of the air inlet duct 13; that is... Figure 19 The portion between the two oblique lines of the central axis M of the hair curling channel 100 corresponds to the side wall of the main body 10 of the curling cylinder. The second section of the main body 10 of the curling cylinder is the side wall of the main body 10 between the air outlet 132 of the air inlet duct 13 and the first section of the main body 10.

[0037] In one optional embodiment, the drum body 10 includes an outer drum 11, and an air inlet duct 13 is fixedly disposed on the side of the outer drum 11. The inner peripheral wall of the air inlet duct 13 has an outer waist edge 133 and an inner waist edge 134. The outer waist edge 133 is located away from the central axis of the drum body 10, and the inner waist edge is located close to the central axis of the drum body 10. The outer waist edge 133 is tangential to the inner peripheral wall of the outer drum 11.

[0038] In the above embodiment, by setting the outer side 133 of the air inlet duct 13 to be tangential to the inner wall of the outer cylinder 11, the air inlet duct 13 and the curling channel 100 are tangentially connected. This makes it easier for the hot airflow entering from the air inlet duct 13 to flow along the inner wall of the outer cylinder 11, avoiding the hot airflow from directly colliding with the opposite side of the outer cylinder 11 and causing energy loss. This improves the smoothness of the airflow from the air inlet duct 13 to the curling channel 100, achieving the technical effect of reducing airflow loss and solving the problem of airflow loss when high-speed airflow enters the curling channel 100 from the air inlet duct 13.

[0039] In some alternative embodiments, the outer waist 133 is located inside the outer tangent 1a at the intersection of the inner peripheral wall of the outer cylinder 11 and the outer waist 133, i.e., not exceeding the outer tangent 1a, so that the outer waist 133 is nearly tangent to the inner peripheral wall of the outer cylinder 11.

[0040] In one alternative embodiment, the angle between the outer waistline 133 and the central axis of the air inlet duct 13 is β, where 0° < β < 90°.

[0041] In the above embodiment, by setting the tangential angle between the outer waist edge 133 and the central axis of the air inlet duct 13 to 0° < β < 90°, it is more conducive to the airflow flowing along the inner wall of the outer cylinder 11, thereby achieving the technical effect of reducing airflow loss.

[0042] In one optional embodiment, the main body 10 of the curling tube also includes an inner tube 12, which is disposed inside the outer tube 11. The inner tube 12 and the outer tube 11 are coaxially arranged, and a curling channel 100 is formed between the outer tube 11 and the inner tube 12. The inner side waist 134 is tangent to the outer peripheral wall of the inner tube 12.

[0043] In the above embodiment, by setting the inner side 134 of the air inlet duct 13 to be tangent to the outer wall of the inner cylinder 12, it is more conducive to the hot airflow entering from the air inlet duct 13 to flow along the outer wall of the inner cylinder 12, avoiding the hot airflow directly colliding with the outer wall of the inner cylinder 12 and causing energy loss, improving the smoothness of airflow from the air inlet duct 13 to the curling channel 100, achieving the technical effect of reducing airflow loss, and solving the problem of airflow loss when high-speed airflow enters the curling channel 100 from the air inlet duct 13.

[0044] In one optional embodiment, the angle between the inner waistline 134 and the central axis of the air inlet duct 13 is γ, where 0° < γ < 90°.

[0045] In the above embodiment, by setting the tangential angle between the inner waist edge 134 and the central axis of the air inlet duct 13 to 0° < γ < 90°, it is more conducive to the airflow flowing along the outer wall of the inner cylinder 12, thereby achieving the technical effect of reducing airflow loss.

[0046] In some alternative embodiments, the inner waistline 134 is located inside the inner tangent 1b formed by the intersection of the outer peripheral wall of the inner cylinder 12 and the inner waistline 134, i.e., not exceeding the position of the inner tangent 1b, so that the inner waistline 134 is nearly tangent to the outer peripheral wall of the inner cylinder 12.

[0047] In one optional embodiment, the angle formed between the central axis of the air inlet duct 13 and the central axis of the drum body 10 is α, where 0° < α < 90°.

[0048] In the above embodiment, the central axis of the air inlet duct 13 is connected to the central axis of the main body of the curling tube 10 at an acute angle. This facilitates the hot airflow from the air inlet duct 13 to rush into the curling channel 100 and form an impact force toward the air outlet 102 at the end of the curling tube 1, thereby forming a spiral airflow and achieving the technical effect of airflow curling. At the same time, it avoids the problem of hot airflow escaping from the hair inlet 101.

[0049] In one alternative embodiment, the air inlet duct 13 along the airflow direction has an air inlet end 131 and an air outlet end 132, and the cross-sectional area of ​​the air inlet duct 13 gradually decreases from the air inlet end 131 to the air outlet end 132.

[0050] 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 of the air inlet duct 13, 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.

[0051] In one alternative implementation, the air inlet duct 13 has a conical structure.

[0052] In the above embodiment, the air inlet duct 13 is set as a conical structure, which facilitates processing and forming.

[0053] In one optional embodiment, the side of the main body 10 of the roller is provided with a hot air inlet 110. Specifically, the side of the outer cylinder 11 is provided with a hot air inlet 110, and the hot air inlet 110 is connected to the hair curling channel 100.

[0054] In the above embodiment, by providing a hot air inlet 110 on the side of the outer cylinder 11, hot air enters the curling channel 100 from the side of the curling cylinder 1, and a spiral downward airflow is formed in the curling channel 100, thereby achieving the technical effect of the hair being curled in a spiral.

[0055] Preferably, the hot air inlet 110 is an angled opening, tilting from one end of the hair inlet 101 towards the other end of the outlet 102, and the angle between the opening direction of the hot air inlet 110 and the central axis of the curling tube 1 is less than 90°. This design allows the high-speed hot airflow entering from the hot air inlet 110 to rush into the curling channel 100 and form a downward force, thereby creating a spiral airflow and achieving the technical effect of airflow curling.

[0056] In one optional embodiment, the outer cylinder 11 includes an inner cylinder 112 and an outer cylinder 111, with the inner cylinder 112 and the outer cylinder 111 spaced apart to form a cavity; 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.

[0057] 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. 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.

[0058] In other alternative embodiments, the outer cylinder 11 can also be configured as a multi-layer structure with three, four, five, etc.

[0059] 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.

[0060] 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.

[0061] In one optional embodiment, the air inlet duct 13 is fixedly mounted on the outer cylinder 11 for introducing hot air; the outlet end of the air inlet duct 13 is connected to the hot air inlet 110, and the angle α formed between the central axis of the air inlet duct 13 and the central axis of the outer cylinder 11 is less than 90°. The central axis of the air inlet duct 13 is connected to the central axis of the curling body 10 at an acute angle, which facilitates the hot airflow from the air inlet duct 13 to rush into the curling channel 100 and form an impact force towards the air outlet 102 at the end of the curling cylinder 1, 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.

[0062] 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 first end of the curling tube 1 towards the second end.

[0063] In one optional embodiment, by setting the distance between the central axis of the air inlet duct 13 and the central axis of the outer cylinder 11 to gradually decrease from the first end to the second end of the curling cylinder 1, the high-speed hot airflow will generate a downward force from the first end to the second end when entering the curling channel 100. This ensures that the airflow has a downward momentum component, thus allowing it to be smoothly blown out from the lower air outlet 102, avoiding the problem of hot air blowing in. 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 creating a pressure difference. This pressure difference drives the air around the hair inlet 101, including the hair within it, to flow towards the low-pressure area, thereby producing an automatic hair-inhalation effect, allowing the hair to enter the curling channel 100 more smoothly, facilitating hair winding and styling.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] Alternatively, the guiding surface may be a hemispherical or conical surface.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] In one alternative embodiment, the end of the outer cylinder 11 near the hair inlet 101 is configured as a flared structure 113.

[0072] 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.

[0073] In one alternative embodiment, the flared structure 113 is tilted at an angle δ relative to the horizontal plane, where 0° < δ < 90°.

[0074] 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.

[0075] 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".

[0076] 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.

[0077] In one alternative embodiment, the inner cylinder 112 and the guide ramp are smoothly connected.

[0078] 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.

[0079] 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.

[0080] In one alternative implementation, such as Figure 10 As shown, the drop D is set to be between 8mm and 12mm.

[0081] 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.

[0082] Preferably, the drop is set to 10mm.

[0083] 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.

[0084] 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.

[0085] In one optional embodiment, the outer cylinder 11 has a double-layer structure; the outer cylinder 11 includes an inner cylinder 112 and an outer cylinder 111, and a cavity is formed between the inner cylinder 112 and the outer cylinder 111; 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.

[0086] In one alternative embodiment, the outer cylinder 11 and the inner cylinder 12 are connected and fixed by a connecting rib 15.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] According to an embodiment of the present invention, in a second aspect, the present invention provides a hair curler, including a curling tube 1, a handle 2, and a hot air device. One end of the handle 2 is connected to an air inlet duct 13 on the side of the outer tube 11, and the other end is provided with an air inlet 200. The inner cavity of the handle 2 is connected to the air inlet 200 and the air inlet duct 13 respectively. The hot air device is disposed inside the handle 2 and is used to convert the airflow entering from the air inlet 200 into hot air, and to transport the hot air through the air inlet duct 13 into the curling channel 100, so as to form a spiral hot airflow in 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 through the air inlet duct 13. The hair is shaped in the spiral airflow, achieving the technical effect of the hair being spirally curled. Since the inner tube 12 and the outer tube 11 constrain the airflow, there is very little airflow escape, and no flying hair occurs 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 flying hair in the curling iron in the prior art.

[0093] In one optional embodiment, the hair curler 1 further includes an interface structure 14, which is fixedly disposed on the outer wall of the outer cylinder 11 located on the periphery of the hot air inlet 110. The interface structure 14 is used to connect with the handle 2. The air inlet duct 13 is fixedly disposed inside the interface structure 14, and the air inlet end 131 of the air inlet duct 13 is connected to the inner cavity of the handle 2, and the air outlet end 132 is connected to the hot air inlet 110.

[0094] In the above embodiment, the interface structure 14 facilitates the connection between the curling iron 1 and the handle 2. Furthermore, by placing the air inlet duct 13 inside the interface structure 14 and covering the air inlet duct 13 outside the interface structure 14, the air inlet duct 13 can be hidden, improving aesthetics.

[0095] In a further embodiment of the above-described embodiments, the air inlet duct 13 and the interface structure 14 are integrally formed.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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 within the heating element mounting section for convenient user operation.

[0106] In one alternative embodiment, the curling iron has a use state, in which the handle 2 is perpendicular to the curling barrel 1; and / or, the curling iron has a storage state, in which the handle 2 is parallel to the curling barrel 1. In the above embodiments, when the curling iron is in use, the central axis of the handle 2 is perpendicular to the central axis of the curling barrel 1. This design allows the user to operate the main unit with one hand while simultaneously placing hair into the curling barrel 1, making it convenient for consumers and improving the user experience. When the curling iron is in the storage state, the central axis of the handle 2 is parallel to the central axis of the curling barrel 1. This design not only meets the user's needs but also facilitates storage after use, reducing packaging volume and transportation costs, thus achieving the technical effects of convenient storage and reduced transportation and packaging costs.

[0107] In one alternative embodiment, the handle 2 is connected to the curling barrel 1 via an adapter 6. The adapter 6 is a corner connector. When you want to store the curling iron, detach the handle 2 from the curling barrel 1 and connect them via the adapter 6 to store the curling iron; when you want to use the curling iron, detach the adapter 6 and connect the handle 2 to the curling barrel 1.

[0108] 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.

[0109] 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 curling iron, characterized in that, include: A hair roller body (10) has a hair-curling channel (100) formed inside it. One end of the hair roller body (10) is configured as a hair inlet (101) and the other end is configured as an air outlet (102). An air inlet duct (13) is fixedly installed on the side of the main body of the roller (10) for delivering hot air into the hair curling channel (100). The central axis of the air inlet duct (13) is offset from the central axis of the main body of the roller (10).

2. The hair curling iron according to claim 1, characterized in that, The main body of the reel (10) includes: The outer cylinder (11) has an air inlet duct (13) fixedly installed on the side of the outer cylinder (11). The inner peripheral wall of the air inlet duct (13) has an outer waist edge (133) and an inner waist edge (134). The outer waist edge (133) is located away from the central axis of the roll body (10), and the inner waist edge (134) is located close to the central axis of the roll body (10). The outer waist edge (133) is tangent to the inner peripheral wall of the outer cylinder (11).

3. The hair curling iron according to claim 2, characterized in that, The angle between the outer waist edge (133) and the central axis of the air inlet duct (13) is β, where 0° < β < 90°.

4. The hair curling iron according to claim 2, characterized in that, The main body of the reel (10) also includes: The inner tube (12) is disposed inside the outer tube (11) and is coaxially disposed with the outer tube (11), and the hair curling channel (100) is formed between the outer tube (11) and the inner tube (12). The inner waist edge (134) is tangential to the outer peripheral wall of the inner cylinder (12).

5. The hair curling iron according to claim 4, characterized in that, The angle between the inner waist edge (134) and the central axis of the air inlet duct (13) is γ, where 0° < γ < 90°.

6. The hair curling iron according to any one of claims 1 to 5, characterized in that, The angle between the central axis of the air inlet duct (13) and the central axis of the drum body (10) is α, where 0° < α < 90°.

7. The hair curling iron according to any one of claims 1 to 5, characterized in that, The air inlet duct (13) has a conical structure, and 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).

8. The hair curling iron according to any one of claims 2 to 5, characterized in that, The outer cylinder (11) includes: An inner cylinder (112) and an outer cylinder (111) are provided at intervals to form a cavity.

9. A hair curling iron, characterized in that, Includes the hair curler (1) and handle (2) as described in any one of claims 1 to 8 above; One end of the handle (2) is connected to the air inlet duct (13) on the side of the drum body (10), and the other end is provided with an air inlet (200). The inner cavity of the handle (2) is connected to the air inlet (200) and the air inlet duct (13) respectively. The handle (2) is provided with a hot air device, which is used to convert the airflow entering from the air inlet (200) into hot air and transport the hot air through the air inlet duct (13) to the curling channel (100) to form a spiral hot airflow in the curling channel (100).

10. The curling iron according to claim 9, characterized in that, The side of the drum body (10) is provided with a hot air inlet (110), and an interface structure (14) is fixedly provided on the drum body (10) located on the outer periphery of the hot air inlet (110). The interface structure (14) is fixedly connected to the handle (2). The 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 inner cavity of the handle (2), and the air outlet end (132) is connected to the hot air inlet (110).

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