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: outer tube, inner tube is arranged in the outer tube, and the interval is arranged between outer tube and inner tube and forms curling passage, one end of curling iron is structured as hair suction inlet, the other end is structured as air outlet, and hair suction inlet and air outlet all are communicated with curling passage, and the side end face of inner tube close to hair suction inlet is structured as the guide surface of middle high four periphery low. Through the side end face of inner tube close to hair suction inlet is structured as the guide surface of middle high four periphery low, not only can increase the smoothness of hair into curling passage, make hair more easily enter curling iron and curl, and more conducive to the periphery airflow of hair suction inlet suction into curling iron, prevent the airflow in curling iron from hair suction inlet escape.

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 iron and using high heat to wrap the hair around the iron for setting. Automatic curlers involve manually attaching hair to the iron and using a motor to rotate the iron, using high heat to set the hair. Airflow curlers use high-speed hot air to create a ring-shaped airflow on the surface of the iron. Hair approaches the iron and automatically adheres to it, where the high-temperature airflow sets the curl. To avoid burns and hair damage from high temperatures, airflow curling irons are widely used in the industry. However, airflow curling irons have a problem where hair cannot easily enter the curling iron. Utility Model Content

[0003] In view of this, the present invention provides a hair curling tube and hair curler to solve the problem that hair cannot smoothly enter the curling tube in the prior art airflow hair curler.

[0004] In a first aspect, the present invention provides a hair curling tube, comprising: outer cylinder; The inner tube is set inside the outer tube, and the outer tube and the inner tube are spaced apart to form a curling channel; One end of the hair curler is configured as a hair inlet and the other end as an air outlet. Both the hair inlet and the air outlet are connected to the hair curling channel. The inner tube's end face near the hair inlet is configured as a guide surface that is high in the middle and low around the edges.

[0005] Beneficial effects: By constructing the inner tube with a guide surface that is high in the middle and low around the hair inlet, it not only increases the smoothness of hair entering the curling channel, making it easier for hair to enter the curling tube for curling, but also facilitates the intake of airflow from the outer side of the hair inlet into the curling tube, preventing airflow from escaping from the hair inlet.

[0006] In one alternative implementation, the guiding surface is a spherical structure or a conical structure.

[0007] Beneficial effects: By adopting a spherical or conical structure, the guiding surface not only provides good guidance but also has a regular shape, making it easy to process.

[0008] In one alternative embodiment, the highest point of the guide surface protrudes from the end face of the outer tube near the hair inlet.

[0009] Beneficial effects: By setting the highest point of the guide surface to protrude from the side end face of the outer barrel near the hair inlet, it is not only more conducive to the airflow from the top periphery into the curling barrel, but also further increases the smoothness of the hair entering the curling barrel. In addition, since users often need to precisely align the hair with a narrow inlet when using the curling barrel, the highest point of the guide surface provides a clear, highest-point tactile feedback. Users only need to gently "drop" the hair on this highest point, and the hair will naturally slide into the curling channel under the guidance of the airflow and the spherical curvature, reducing the requirements for operational precision and making the curling process faster and easier.

[0010] In one alternative embodiment, the end of the outer tube near the hair intake is configured as a flared structure.

[0011] Beneficial effects: By setting the top of the outer barrel to an inclined, trumpet-shaped structure, the area at the entrance of the curling channel is increased, expanding the "capture range" of the hair intake and making it easier for hair to enter the barrel for curling. Traditional straight-barreled 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. This application uses an inclined trumpet-shaped opening to create a wide guiding area. Users do not need to align precisely when curling; simply bringing the hair close to the trumpet-shaped opening allows it to naturally gather the scattered hair and guide it into the curling channel. This increases the margin for error and is especially suitable for beginners or inexperienced users, improving the user experience.

[0012] In one alternative embodiment, the angle of inclination of the flared structure relative to the horizontal plane is δ, where 0° < δ < 90°.

[0013] Beneficial effects: By setting δ within the above-mentioned angle range, hair can be guided smoothly into the curling channel, and the transition between the trumpet-shaped structure and the main body of the outer tube can be smooth, reducing damage to the hair. At the same time, it can optimize airflow and enhance suction, effectively avoiding the problem that excessive δ will obstruct the hair from entering the curling channel and cause severe friction between the hair and the tube, resulting in serious damage to the hair and causing airflow turbulence.

[0014] In one optional embodiment, the outer cylinder includes an inner cylinder and an outer cylinder, with the inner cylinder and the outer cylinder spaced apart to form a cavity; The end of the inner tube closest to the hair intake is shorter than the end of the outer tube closest to the hair intake, and the two are connected by a flared guide ramp.

[0015] Beneficial effects: The outer barrel features a double-layer structure, with an inner and outer barrel spaced apart to form a cavity. The outer barrel not only increases the variety of the outer barrel's appearance but also reduces heat transfer efficiency, acting as a heat insulation and anti-scalding agent, lowering the surface temperature of the curling iron and preventing burns. The inner barrel 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.

[0016] In one alternative embodiment, the inner cylinder and the guide ramp are smoothly connected.

[0017] Beneficial effects: The smooth transition between the inner tube and the guide slope protects the hair and reduces friction and pulling. It avoids the sharp right angle at the edge of the hair inlet, which would cause concentrated and intense friction and bending to the hair upon entry, leading to cuticle damage and breakage.

[0018] In one alternative embodiment, the outer cylinder has a hot air inlet on its side, which is connected to the curling channel.

[0019] Beneficial effects: By setting a hot air inlet on the side of the outer tube, hot air enters the curling channel from the side of the curling tube and forms a spiral downward airflow in the curling channel, thereby achieving the technical effect of curling hair into a spiral.

[0020] In one alternative embodiment, the hair curling tube further includes: The air inlet duct is fixedly installed on the outer cylinder and is used to introduce hot air; The outlet end of the air inlet duct is connected to the hot air inlet, and the included angle α between the central axis of the air inlet duct and the central axis of the outer cylinder is less than 90°.

[0021] Beneficial effects: The central axis of the air inlet duct is connected to the central axis of the curling barrel at an angle, and the angle α is set to 0° < α < 90°. This makes it easier for the high-speed hot airflow generated by the hot air device to rush into the curling barrel and form an impact force towards the air outlet, 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.

[0022] In a second aspect, the present invention provides a hair curler, comprising a curling tube according to any of the above embodiments and a handle connected to the side of the curling tube. Attached Figure Description

[0023] 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.

[0024] 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 4 A 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 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 intake duct (frontal view); Figure 16 This is a simulation diagram of the airflow of the entire machine; Figure 17An 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).

[0025] Explanation of reference numerals in the attached figures: 1. Hair curling iron; 100. Hair curling channel; 101. Hair intake inlet; 102. Air outlet; 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. Adapter components. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] The following is combined with Figures 1 to 18 The following describes embodiments of the present invention.

[0031] According to an embodiment of the present invention, in a first aspect, the present invention provides a hair curling tube 1, including an outer tube 11 and an inner tube 12, the inner tube 12 being disposed inside the outer tube 11, and a hair curling channel 100 being formed between the outer tube 11 and the inner tube 12. Preferably, the inner tube 12 is coaxially arranged with the outer tube 11. One end of the hair curling tube 1 is configured as a hair inlet 101, and the other end is configured as an air outlet 102. Both the hair inlet 101 and the air outlet 102 are connected to the hair curling channel 100. The end face of the inner tube 12 near the hair inlet 101 is configured as a guide surface that is high in the middle and low around the edges.

[0032] 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.

[0033] 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.

[0034] Alternatively, the guiding surface may be a hemispherical or conical surface.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] In one alternative embodiment, the end of the outer cylinder 11 near the hair inlet 101 is configured as a flared structure 113.

[0039] 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.

[0040] In one alternative embodiment, the flared structure 113 is tilted at an angle δ relative to the horizontal plane, where 0° < δ < 90°.

[0041] 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.

[0042] 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".

[0043] 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 and forming a cavity; 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 slope.

[0044] 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.

[0045] In one alternative embodiment, the inner cylinder 112 and the guide ramp are smoothly connected.

[0046] 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.

[0047] 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.

[0048] In one alternative implementation, such as Figure 10 As shown, the drop D is set to be between 8mm and 12mm.

[0049] 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.

[0050] Preferably, the drop is set to 10mm.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] In one alternative embodiment, the outer cylinder 11 and the inner cylinder 12 are connected and fixed by a connecting rib 15.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] In one alternative embodiment, the outer cylinder 11 is provided with a hot air inlet 110 on its side, and the hot air inlet 110 is connected to the hair curling channel 100.

[0061] 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.

[0062] 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.

[0063] In one optional embodiment, the outer cylinder 11 has an air inlet duct 13 on its side that communicates with the hair curling channel 100; the air inlet duct 13 has an air inlet end 131 and an air outlet end 132 along the airflow direction, 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 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 and achieving the technical effect of high-speed airflow pressurization. This allows the hot airflow to have a higher initial wind speed when entering the curling channel 100, thereby forming a high-speed, stable airflow with sufficient pressure. This facilitates the airflow entering the curling tube 1, ensuring that the airflow can overcome resistance and smoothly enter the curling tube 1, effectively penetrating and wrapping the hair bundle. This allows the hair to be efficiently adsorbed onto the curling tube 1, 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.

[0064] In one alternative implementation, the cross-sectional area of ​​the air inlet duct 13 gradually decreases from the air inlet end 131 to the air outlet end 132.

[0065] 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.

[0066] 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.

[0067] In the above embodiments, by setting the cross-sectional area 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 adsorption force 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.

[0068] In one alternative implementation, the air inlet duct 13 has a conical structure.

[0069] In the above embodiment, the air inlet duct 13 is set as a conical structure, which facilitates processing and forming.

[0070] In one alternative embodiment, 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.

[0071] In the above embodiment, the air outlet 132 of the air inlet duct 13 directly passes through the outer cylinder 111 and is inserted into the hot air inlet 110 of the inner cylinder 112, which can effectively prevent hot air from entering the cavity of the outer cylinder 111 and the inner cylinder 112.

[0072] In other alternative embodiments, the outer cylinder 11 can also be configured as a multi-layer structure with three, four, five, etc.

[0073] 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.

[0074] 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.

[0075] In one optional embodiment, the hair curling tube 1 further includes an air inlet duct 13, which is fixedly mounted on the outer tube 11 for introducing hot air; the outlet end of the air inlet duct 13 is connected to the hot air inlet 110, and the included angle α formed between the central axis of the air inlet duct 13 and the central axis of the outer tube 11 is less than 90°.

[0076] In the above embodiment, the central axis of the air inlet duct is connected to the central axis of the curling cylinder at an angle, and the included 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 and forming an impact force towards the air outlet, 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.

[0077] 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.

[0078] In the above 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 it enters 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.

[0079] 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.

[0080] 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.

[0081] In a further embodiment of the above-described embodiments, the air inlet duct 13 and the interface structure 14 are integrally formed.

[0082] According to an embodiment of the present invention, in a second aspect, the present invention provides a hair curler, including a curling tube 1 of any of the above embodiments and a handle 2 connected to the side of the curling tube 1.

[0083] Furthermore, one end of the handle 2 is connected to the air inlet duct 13 on the side of the outer cylinder 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. A hot air device is provided inside 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 air inlet duct 13 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. 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] In a more specific embodiment of the above-described method, the adapter 6 is an L-shaped pipe connector at 90° or an elbow. The adapter 6 is snapped and fixed to the curling iron 1 and the handle 2 respectively.

[0097] 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.

[0098] 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: outer cylinder (11); The inner tube (12) is disposed inside the outer tube (11), and the outer tube (11) and the inner tube (12) are spaced apart to form a hair curling channel (100). 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). Both the hair inlet (101) and the air outlet (102) are connected to the hair curling channel (100). The inner tube (12) is configured with a guide surface that is high in the middle and low around the edges on the side end face near the hair inlet (101).

2. The hair curling iron according to claim 1, characterized in that, The guiding surface is a spherical structure (120) or a conical structure.

3. The hair curling iron according to claim 1, characterized in that, The highest point of the guide surface protrudes from the side end face of the outer cylinder (11) near the hair inlet (101).

4. The hair curling iron according to any one of claims 1 to 3, characterized in that, The outer cylinder (11) is configured as a funnel-shaped structure (113) at the end near the hair inlet (101).

5. The hair curling iron according to claim 4, characterized in that, The angle of inclination of the trumpet-shaped structure (113) relative to the horizontal plane is δ, where 0° < δ < 90°.

6. The hair curling iron according to claim 4, characterized in that, 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 inner cylinder (112) is shorter at the end near the hair inlet (101) than the outer cylinder (111) is at the end near the hair inlet (101), and the two are connected by a flared guide slope.

7. The hair curling iron according to claim 6, characterized in that, The inner cylinder (112) and the guide slope are smoothly connected.

8. The hair curling iron according to any one of claims 1 to 3, characterized in that, The outer cylinder (11) is provided with a hot air inlet (110) on its side, and the hot air inlet (110) is connected to the hair curling channel (100).

9. The hair curling iron according to claim 8, characterized in that, The hair curler (1) also includes: An air inlet duct (13) is fixedly installed 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 included angle α between the central axis of the air inlet duct (13) and the central axis of the outer cylinder (11) is less than 90°.

10. A hair curler, characterized in that, Includes the hair curler (1) as described in any one of claims 1 to 9 and a handle (2) connected to the side of the hair curler (1).

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