A curling iron

Abstract

The application discloses a curler, comprising: at least two arc-shaped curling plates, all the arc-shaped curling plates are coaxially arranged to enclose a curling barrel; a center rod is inserted into the curling barrel and can move axially under the action of external force; wherein one of the arc-shaped curling plate and the center rod is provided with a first limiting groove, and the other is provided with a first protruding part which is in sliding cooperation with the first limiting groove; when the center rod moves, the first protruding part cooperates with different positions of the first limiting groove, so that the arc-shaped curling plate is close to or away from the center axis, so that the curling barrel has different diameters. The curling barrel of the curler is a variable-diameter curling barrel, and the switching between curling barrels with different diameters can be realized by applying external force to the center rod, which is simple and convenient to operate, can meet the curling demand of different sizes, is convenient for curling operation, and improves the styling efficiency and styling effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hair styling appliances, and more particularly to a curling iron. BACKGROUND

[0002] As a tool for curling and shaping hair, curling irons are widely used in the beauty and hair styling industry and in daily life.

[0003] A curling iron includes a curling barrel. When in use, a hair strand is wound around the curling barrel, and the curling barrel is powered and heated. The heat of the curling barrel is dissipated outward from the hair wound inside, so as to iron and curl the hair to form a desired hairstyle.

[0004] The diameter of the curling barrel of the curling iron in the prior art is usually fixed. For example, the diameters of the curling barrels of the curling irons currently on the market include 25 mm, 32 mm, and 38 mm. When curling hair, a curling iron with a curling barrel of a suitable diameter is selected according to the size of the curl. That is, once a curling iron is selected, the diameter of the curling barrel of the curling iron is also determined. Therefore, the size of the curl ironed and curled by the curling iron is also fixed.

[0005] However, in actual use, in order to meet the needs of the hairstyle, the curling iron needs to be able to iron and curl hair into different sizes of curls. In this case, the only way to meet the needs of different sizes of curls is to constantly switch different curling irons. Obviously, this brings many inconveniences to the curling operation and seriously restricts the styling efficiency and the styling beauty.

[0006] In summary, how to provide a curling iron that can iron and curl hair into different sizes of curls so as to facilitate the curling operation and improve the styling efficiency and the styling effect is a problem that needs to be solved by the technical personnel in the field. SUMMARY

[0007] Therefore, the purpose of the present application is to provide a curling iron that can iron and curl hair into different sizes of curls, is easy to operate, has high styling efficiency, and has good styling effect.

[0008] To achieve the above purpose, the present application provides the following technical solutions.

[0009] A curling iron includes:

[0010] At least two arc-shaped curling plates, all of which are coaxially arranged to enclose a curling barrel;

[0011] A center rod is inserted into the curling barrel and can move axially under the action of an external force.

[0012] One of the arc-shaped curling board and the center rod is provided with a first limiting slot, and the other is provided with a first protruding part which is in sliding cooperation with the first limiting slot; when the center rod moves, the first protruding part cooperates with different positions of the first limiting slot, so that the arc-shaped curling board is close to or away from the center axis, so that the curling cylinder has different diameters.

[0013] Preferably, it further comprises side seam covers, the number of which is the same as that of the arc-shaped curling boards, one of the side seam covers and the center rod is provided with a second limiting slot, and the other is provided with a second protruding part which is in sliding cooperation with the second limiting slot; when the center rod moves, the second protruding part cooperates with different positions of the second limiting slot, so that the side seam cover is close to or away from the center axis, so that the side seam cover is displaced or fills the gap between the adjacent two arc-shaped curling boards.

[0014] Preferably, the first limiting slot comprises a first slot section, a second slot section and a first transition slot section connected between the first slot section and the second slot section, the first slot section and the second slot section are both parallel to the center axis, and the first slot section is closer to the first center surface of the center rod than the second slot section.

[0015] Preferably, the second limiting slot comprises a third slot section, a fourth slot section and a second transition slot section connected between the third slot section and the fourth slot section, the third slot section and the fourth slot section are both parallel to the center axis, and the third slot section is closer to the second center surface of the center rod than the fourth slot section.

[0016] Preferably, when the first protruding part slides along the first transition slot section, the second protruding part slides along the third slot section; when the first protruding part slides along the second slot section, the second protruding part slides along the second transition slot section.

[0017] Preferably, the number of the arc-shaped curling boards is two, and the two arc-shaped curling boards are symmetrically arranged about the center rod.

[0018] Preferably, two first limiting slots are respectively arranged on the two sides of the two ends of the center rod, and the two first limiting slots on the same end and the same side form a Y-shaped groove which is symmetric about the center surface of the center rod.

[0019] Two first protruding parts are respectively arranged on the two ends of the two arc-shaped curling boards, and the two first protruding parts on the same end of the arc-shaped curling board are respectively in sliding cooperation with the two first limiting slots corresponding to the same end and different sides of the center rod.

[0020] Preferably, the top surface and the bottom surface of the center rod are respectively provided with two groups of limiting grooves which are symmetrical about the center line of the center rod, and each group of the limiting grooves comprises two second limiting grooves which are arranged along the axial direction of the center rod;

[0021] The two side seam covers are respectively provided with two pairs of second protrusions, and the second protrusions of the same pair are respectively matched with the two second limiting grooves corresponding to the top surface and the bottom surface.

[0022] Preferably, the side seam cover is provided with a U-shaped groove which is slidably arranged on the side of the center rod, and the second protrusions are arranged on the inner sides of the two groove walls of the U-shaped groove which are parallel to each other.

[0023] Preferably, the center rod is provided with a third limiting groove, and the body part of the curling device is provided with a limiting screw which extends into the third limiting groove to limit the stroke of the center rod.

[0024] The curling device provided by the present application utilizes two or more arc-shaped curling plates to form a curling barrel, and the center rod is pushed by external force to drive the radial movement of each arc-shaped curling plate. It can be understood that, by reasonably designing the shape of the first limiting groove, the axial movement of the center rod can be transmitted to the radial movement of the arc-shaped curling plate, so that the axial movement of the center rod can be converted into the radial movement of the arc-shaped curling plate by the sliding of the first protrusion relative to the first limiting groove, so that each arc-shaped curling plate moves closer to or further away from each other, and then all the arc-shaped curling plates form curling barrels with different diameters.

[0025] Therefore, the curling barrel of the curling device provided by the present application is a variable-diameter curling barrel, and the switching between curling barrels with different diameters can be realized by applying external force to the center rod, which is simple and convenient to operate, can meet the curling demand of different sizes, is convenient for curling operation, and improves the styling efficiency and styling effect. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and those skilled in the art can obtain other drawings according to the provided drawings without any creative labor.

[0027] Figure 1 The structure diagram of the curling device provided by the embodiment of the present application;

[0028] Figure 2 The Figure 1 exploded view;

[0029] Figure 3 for Figure 1 An exploded view of the body of the curling iron shown;

[0030] Figure 4 This is an exploded view of the curling iron's mechanism;

[0031] Figure 5 Exploded view of the center rod, curved curling plate, and side seam covers before assembly;

[0032] Figure 6 is the structural diagram of the center rod;

[0033] Figure 7 It is a structural diagram of an arc-shaped curling plate;

[0034] Figure 8 It is a structural diagram of the side seam cover;

[0035] Figure 9 This is a schematic diagram of the structure when the hair roller has a large diameter;

[0036] Figure 10 for Figure 9 a cross-sectional view of the hair roller shown;

[0037] Figure 11 Schematic diagram of the structure of the hair roller when it is of small diameter;

[0038] Figure 12 for Figure 11 A cross-sectional view of the hair roller shown.

[0039] Figures 1 to 12 The reference numerals in the figures are as follows:

[0040] 100 is the fuselage, 101 is the main body cover, 102 is the head cover, 103 is the upper main body, 104 is the lower main body, 105 is the first PCB board, 106 is the function control button, 107 is the tail assembly, 201 is the upper aluminum cover, 202 is the lower aluminum cover, 203 is the corner, 204 is the magnet, 205 is the second PCB board, 206 is the inner cylinder, and 207 is the motor;

[0041] 1 is an arc-shaped curling plate, 11 is a first protrusion, 2 is a center rod, 21 is a first limiting groove, 211 is a first groove section, 212 is a second groove section, 213 is a first transition groove section, 22 is a second limiting groove, 221 is a third groove section, 222 is a fourth groove section, 223 is a second transition groove section, 23 is a third limiting groove, 3 is a side seam cover, 31 is a second protrusion, 32 is a U-shaped groove, and 4 is a limiting screw. DETAILED DESCRIPTION

[0042] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0043] The core of the present application is to provide a curling iron which can curl out different size curls, is convenient to operate, has high styling efficiency and good styling effect.

[0044] Please refer to Figures 1-12 , Figure 1 for the structural schematic diagram of the curling iron provided by the embodiment of the present application; Figure 2 for Figure 1 the exploded view; Figure 3 for the exploded view of the body part; Figure 4 for the exploded view of the core part; Figure 5 for the exploded view of the center rod, the arc-shaped curling plate and the side seam cover before assembly; Figure 6 for the structural schematic diagram of the center rod; Figure 7 for the structural schematic diagram of the arc-shaped curling plate; Figure 8 for the structural schematic diagram of the side seam cover; Figure 9 for the structural schematic diagram when the curling barrel has a large diameter; Figure 10 for Figure 9 the sectional view of the curling barrel shown in FIG. 8; Figure 11 for the structural schematic diagram when the curling barrel has a small diameter; Figure 12 for Figure 11 the sectional view of the curling barrel shown in FIG. 9.

[0045] As shown in Figures 1 to 4 , the present application provides a curling iron which includes a body part 100 and a core part, and the core part is accommodated in the body part 100. The body part 100 includes a large body sheath 101, a head cover 102, an upper large body 103, a lower large body 104, a first PCB board 105, a plurality of function control buttons 106 and a tail turning assembly 107. The upper large body 103 is tightly connected with the lower large body 104. The upper large body 103 and the lower large body 104 are provided with cavities. The first PCB board 105 is arranged in the cavity. The upper large body 103 is provided with a plurality of mounting holes. The plurality of function control buttons 106 are connected with the first PCB board 105, and the plurality of function control buttons 106 are arranged in the plurality of mounting holes of the upper large body 103.

[0046] The core part includes an aluminum plate upper cover 201, an aluminum plate lower cover 202, a corner 203, a magnet 204, a second PCB board 205, an inner cylinder 206 and a motor 207.

[0047] It should be noted that the specific structure of the machine body part 100 and the above-mentioned parts of the movement part can refer to the prior art, and will not be described here.

[0048] The curler provided by the present application comprises arc-shaped curling plates 1 and a center rod 2, wherein the number of the arc-shaped curling plates 1 is at least two, and all the arc-shaped curling plates 1 are coaxially arranged to enclose a curling barrel; the center rod 2 is inserted into the curling barrel and can move axially under the action of an external force; one of the arc-shaped curling plates 1 and the center rod 2 is provided with a first limiting groove 21, and the other is provided with a first protruding part 11; the first protruding part 11 and the first limiting groove 21 are in sliding fit; when the center rod 2 moves axially under the action of an external force, the first protruding part 11 and the first limiting groove 21 are matched at different positions, so that the arc-shaped curling plates 1 are close to or away from the center axis, so that the curling barrel has different diameters.

[0049] That is, the present application uses two or more arc-shaped curling plates 1 to splice to form a curling barrel, and drives the center rod 2 by an external force, so that the center rod 2 drives each arc-shaped curling plate 1 to move radially, so that each arc-shaped curling plate 1 is close to or away from each other, and then all the arc-shaped curling plates 1 form a curling barrel with different diameters.

[0050] Specifically, by providing the first limiting groove 21 on one of the arc-shaped curling plates 1 and the center rod 2, and the first protruding part 11 on the other, and making the first protruding part 11 and the first limiting groove 21 in sliding fit, the axial movement of the center rod 2 is converted into the radial movement of the arc-shaped curling plate 1 by the sliding of the first protruding part 11 relative to the first limiting groove 21. It can be understood that by reasonably designing the shape of the first limiting groove 21, the axial movement of the center rod 2 to the radial movement of the arc-shaped curling plate 1 can be ensured.

[0051] Therefore, the curling barrel of the curler provided by the present application is a variable-diameter curling barrel, and the switching between curling barrels with different diameters can be realized by applying an external force to the center rod 2, which is simple and convenient to operate, can meet the curling requirements of different sizes, is convenient for curling operation, and improves the styling efficiency and styling effect.

[0052] It can be understood that when each arc-shaped curling plate 1 is close to each other, the side parts of any two adjacent arc-shaped curling plates 1 are close to each other, a curling barrel with the smallest diameter is formed; at this time, the curling barrel is circumferentially closed without gaps. When each arc-shaped curling plate 1 is away from each other, a larger diameter curling barrel is formed, and a gap will be generated between the two adjacent arc-shaped curling plates 1, that is, at this time, the curling barrel is a curling barrel with a circumferential gap.

[0053] In order to avoid dust, impurities and the like from entering the curling barrel from the gap between the two adjacent arc-shaped curling plates 1, a sealing ring 31 is arranged on the gap between the two adjacent arc-shaped curling plates 1. Figure 5As shown, on the basis of the above embodiment, further comprising side seam covers 3, the number of which is the same as that of the arc-shaped curling boards 1, one of the side seam covers 3 and the central rod 2 is provided with a second limiting groove 22, and the other is provided with a second protruding part 31 which is in sliding cooperation with the second limiting groove 22, when the central rod 2 moves, the second protruding part 31 cooperates with different positions of the second limiting groove 22, so that the side seam covers 3 are close to or away from the central axis of the curling cylinder, so as to make the side seam covers 3 give way or fill the gap between the adjacent two arc-shaped curling boards 1.

[0054] That is, the second protruding part 31 slides relative to the second limiting groove 22 in this embodiment, which converts the axial movement of the central rod 2 into the radial movement of the side seam covers 3, so that when the arc-shaped curling boards 1 are away from each other to form a curling cylinder with a larger diameter, the side seam covers 3 can be moved to the gap between the adjacent two arc-shaped curling boards 1 to fill the gap (as shown in Figure 9 and 10 shown), so as to avoid dust, impurities and the like from entering the curling cylinder from the gap. It can be understood that when the arc-shaped curling boards 1 are close to each other to form a curling cylinder with the smallest diameter, the side seam covers 3 need to be moved to a position away from the gap between the arc-shaped curling boards 1, so that the adjacent two arc-shaped curling boards 1 can be close to each other (as shown in Figure 11 and 12 shown).

[0055] It should be noted that the number of different diameters of the curling cylinder is not limited in the present application, for example, the curling cylinder can have two different diameters, that is, the arc-shaped curling boards 1 have two different radial positions, preferably, when all the arc-shaped curling boards 1 are close to each other, a small-diameter curling cylinder without gap is formed, and when all the arc-shaped curling boards 1 are away from each other by a certain distance, a large-diameter curling cylinder is formed. At this time, correspondingly, the side seam covers 3 have two radial positions, when all the arc-shaped curling boards 1 are close to each other, the side seam covers 3 do not need to fill the gap between the adjacent two arc-shaped curling boards 1, at this time, the side seam covers 3 are located inside the curling cylinder; when all the arc-shaped curling boards 1 are away from each other by a certain distance, the side seam covers 3 are moved to the gap between the adjacent two arc-shaped curling boards 1 to fill the gap.

[0056] Of course, the curling cylinder can also have more than three different diameters, that is, the arc-shaped curling boards 1 have more than three different radial positions, at this time, the side seam covers 3 also need to have more than three different radial positions correspondingly to fill the gaps of the curling cylinders with different diameters. It can be understood that in this case, the side seam covers 3 can preferably be arc-shaped plates with a predetermined width, the width of the arc-shaped plates can fill the maximum gap between the adjacent two arc-shaped curling boards 1, so that when the gap between the adjacent two arc-shaped curling boards 1 is between zero and the maximum gap, the side seam covers 3 can also be used to fill the gap.

[0057] Preferably, the curling barrel has two different diameters, and the implementation of the curling barrel with two different diameters will be described below.

[0058] It can be understood that the specific shape of the first limiting groove 21 is not limited in the embodiment, as long as the first protruding part 11 can move the arc-shaped curling plate 1 radially when sliding along the first limiting groove 21. As a preferred solution, as shown in Figure 6 the first limiting groove 21 includes a first groove segment 211, a second groove segment 212, and a first transition groove segment 213 connected between the first groove segment 211 and the second groove segment 212, the first groove segment 211 and the second groove segment 212 are parallel to the center axis, and the first groove segment 211 is closer to the first center surface of the center rod 2 than the second groove segment 212. It should be noted that the first center surface of the center rod 2 refers to a center surface passing through the center line of the center rod 2, as shown in Figure 6 the first center surface refers to the median plane perpendicular to the height direction of the center rod 2.

[0059] It can be understood that the closer the groove segment of the first limiting groove 21 is to the first center surface of the center rod 2, the closer the arc-shaped curling plate 1 is to the center axis. When the first protruding part 11 is located in the first groove segment 211, the arc-shaped curling plate 1 is closest to the center axis, that is, at this time, all the arc-shaped curling plates 1 form a small-diameter curling barrel; when the first protruding part 11 is located in the second groove segment 212, the arc-shaped curling plate 1 is farthest from the center axis, that is, at this time, all the arc-shaped curling plates 1 form a large-diameter curling barrel; when the first protruding part 11 is located in the first transition groove segment 213 between the first groove segment 211 and the second groove segment 212, all the arc-shaped curling plates 1 are in a switching state from small diameter to large diameter, or in a switching state from large diameter to small diameter.

[0060] It should be noted that in order to enable the first protruding part 11 to smoothly move from the first groove segment 211 to the second groove segment 212, or vice versa, the first transition groove segment 213 is preferably an inclined groove segment having a certain angle with the first groove segment 211 and the second groove segment 212, respectively.

[0061] In addition, the specific shape of the second limiting groove 22 is not limited in the embodiment, as long as the second protruding part 31 can move the side seam cover 3 radially when sliding along the second limiting groove 22. As a preferred solution, as shown in Figure 6As shown, on the basis of the above embodiment, the second limiting groove 22 comprises a third groove segment 221, a fourth groove segment 222 and a second transition groove segment 223 connected between the third groove segment 221 and the fourth groove segment 222, the third groove segment 221 and the fourth groove segment 222 are both parallel to the central axis, and the third groove segment 221 is closer to the second central surface of the central rod 2 than the fourth groove segment 222. It should be noted that the second central surface of the central rod 2 refers to a central surface passing through the center line of the central rod 2, for example Figure 6 As shown, the second central surface refers to the middle plane perpendicular to the width direction of the central rod 2.

[0062] It can be understood that the closer the groove segment of the second limiting groove 22 is to the second central surface of the central rod 2, the closer the side seam cover 3 is to the central axis. When the second protruding part 31 is located in the third groove segment 221, the side seam cover 3 is closest to the central axis, that is, at this time the side seam cover 3 gives way to the gap between the two adjacent arc-shaped curling iron plates 1; when the second protruding part 31 is located in the fourth groove segment 222, the side seam cover 3 is farthest away from the central axis, that is, at this time the side seam cover 3 fills the largest gap between the two adjacent arc-shaped curling iron plates 1; when the second protruding part 31 is located in the second transition groove segment 223 between the third groove segment 221 and the fourth groove segment 222, the side seam cover 3 is in the transition stage from filling the gap to giving way to the gap or in the transition stage from giving way to the gap to filling the gap.

[0063] It should be noted that in order to enable the second protruding part 31 to smoothly move from the third groove segment 221 to the fourth groove segment 222, or vice versa, preferably, the second transition groove segment 223 is an inclined groove segment having a certain angle with the third groove segment 221 and the fourth groove segment 222 respectively.

[0064] Further, in order to avoid the interference between the arc-shaped curling iron plate 1 and the side seam cover 3 during movement, on the basis of the above embodiment, when the first protruding part 11 slides along the first transition groove segment 213, the second protruding part 31 slides along the third groove segment 221; when the first protruding part 11 slides along the second groove segment 212, the second protruding part 31 slides along the second transition groove segment 223.

[0065] It can be understood that when the first protruding part 11 slides along the first transition groove segment 213, the arc-shaped curling iron plate 1 moves radially; when the second protruding part 31 slides along the third groove segment 221, since the third groove segment 221 is parallel to the central axis, the distance of the side seam cover 3 from the central axis remains unchanged, that is, at this time the side seam cover 3 remains stationary. When the first protruding part 11 slides along the second groove segment 212, since the second groove segment 212 is parallel to the central axis, the distance of the arc-shaped curling iron plate 1 from the central axis remains unchanged, that is, at this time the arc-shaped curling iron plate 1 remains stationary; when the second protruding part 31 slides along the second transition groove segment 223, the side seam cover 3 moves radially.

[0066] That is to say, the arc-shaped curling plate 1 and the side seam cover 3 do not move synchronously, but move one in front of the other. By making them always keep a one-after-the-other movement relationship, mutual interference between the two is avoided during movement, thereby ensuring the reliability of movement.

[0067] For example, Figure 6 As shown, when the first protrusion 11 slides from the first groove section 211 into the first transition groove section 213 and then along the first transition groove section 213 into the second groove section 212, the arcuate curling plate 1 moves radially away from the central axis, transforming from a small diameter curling barrel to a large diameter curling barrel. During this process, the second protrusion 31 slides along the third groove section 221, while the position of the side seam cover 3 remains unchanged. As the first protrusion 11 continues to slide along the second groove section 212, the second protrusion 31 slides from the third groove section 221 into the second transition groove section 223 and then along the second transition groove section 223 to the fourth groove section 222. At this point, the arcuate curling plate 1 remains stationary, while the side seam cover 3 moves radially to the gap between two adjacent arcuate curling plates 1 to fill the gap.

[0068] That is, when the curling roller with small diameter is changed to the curling roller with large diameter, the arc-shaped curling plate 1 moves first, and after the curling roller with large diameter is formed, the side seam cover 3 moves to fill the gap between the two adjacent arc-shaped curling plates 1.

[0069] On the contrary, when the first protrusion 11 slides in the opposite direction along the second groove section 212, the second protrusion 31 slides from the fourth groove section 222 into the second transition groove section 223 and slides along the second transition groove section 223 to the third groove section 221. At this time, the arc-shaped curling plate 1 remains stationary, and the side seam cover 3 moves radially toward the direction close to the central axis to open the gap between the two adjacent arc-shaped curling plates 1; when the first protrusion 11 slides from the second groove section 212 into the first transition groove section 213 and slides along the first transition groove section 213 to the first groove section 211, the second protrusion 31 continues to move along the third groove section 221. At this time, the arc-shaped curling plates 1 move radially toward the direction close to the central axis, and all the arc-shaped curling plates 1 move closer to each other to form a small-diameter curling roller, while the side seam cover 3 remains stationary.

[0070] That is, when changing from a large diameter curling roller to a small diameter curling roller, the side seam cover 3 moves first to make way for the gap between two adjacent arc-shaped curling plates 1; and then the arc-shaped curling plates 1 move again to form a small diameter curling roller.

[0071] It should be noted that the curling barrel can have more than three different diameters by making the first limiting groove 21 include more than three groove segments parallel to the center axis, making the distance from each groove segment to the center surface of the center rod 2 increase sequentially, and making the adjacent two groove segments connected through a transition groove segment.

[0072] In addition, the present application does not limit the specific number of the arc-shaped curling plates 1, which can be two or more than three. Considering the simplicity of the structure, preferably, the number of the arc-shaped curling plates 1 is two, and the two arc-shaped curling plates 1 are symmetrically arranged about the center rod 2.

[0073] Correspondingly, the number of the side seam covers 3 is two, and the two side seam covers 3 are symmetrically arranged about the center rod 2.

[0074] In addition, the present application does not limit the specific arrangement position of the first limiting groove 21 and the first protruding part 11, and the first limiting groove 21 can be arranged on the center rod 2, and the first protruding part 11 is arranged on the arc-shaped curling plate 1; of course, it can also be the opposite, that is, the first limiting groove 21 is arranged on the arc-shaped curling plate 1, and the first protruding part 11 is arranged on the center rod 2.

[0075] Further, the present embodiment does not limit the number of the first limiting groove 21 and the first protruding part 11 between the single arc-shaped curling plate 1 and the center rod 2, for example, preferably, each arc-shaped curling plate 1 is provided with at least two first protruding parts 11, and correspondingly, the number of the first limiting groove 21 on the center rod 2 corresponding to the single arc-shaped curling plate 1 is at least two.

[0076] Considering the specific shape of the first limiting groove 21, as a preferred scheme, as shown in Figure 6As shown in the above embodiment, on the basis of the above embodiment, two first limiting grooves 21 are arranged on the two sides of the two ends of the center rod 2, and the two first limiting grooves 21 on the same end and the same side form a Y-shaped groove symmetric about the center surface of the center rod 2; at the same time, as shown in 7, two first protruding parts 11 are arranged on the two ends of the two arc-shaped curling plates 1, and the two first protruding parts 11 on the same end of the arc-shaped curling plate 1 are respectively matched with the two first limiting grooves 21 on the same end and different sides of the center rod 2. It can be understood that, since the two first limiting grooves 21 on the same end and the same side of the center rod 2 form a Y-shaped groove symmetric about the center surface of the center rod 2, that is, the two first groove sections 211 of the two first limiting grooves 21 on the same end and the same side are combined into one, which is convenient for processing; on the other hand, when the two first protruding parts 11 of the two arc-shaped curling plates 1 slide along the two first limiting grooves 21 forming the Y-shaped groove, the consistency of the movement amount of the two arc-shaped curling plates 1 can be ensured, that is, the two arc-shaped curling plates 1 move synchronously in opposite directions. In addition, by making the first protruding parts 11 on the two ends of the arc-shaped curling plate 1 move along the first limiting grooves 21 on the two ends of the center rod 2, the stability and reliability of the movement of the arc-shaped curling plate 1 can be ensured.

[0077] Considering the specific arrangement mode of the second limiting groove 22, as a preferred scheme, as shown in Figure 6 on the basis of the above embodiment, the top surface and the bottom surface of the center rod 2 are respectively provided with two groups of limiting groove groups symmetric about the center line thereof, and each group of limiting groove groups comprises two second limiting grooves 22 arranged along the axial direction of the center rod 2; at the same time, as shown in Figure 8 two pairs of second protruding parts 31 are arranged on the two side seam covers 3, and each pair of second protruding parts 31 is matched with the two second limiting grooves 22 on the top surface and the bottom surface of the center rod 2. That is, in the present embodiment, the single side seam cover 3 is matched with the second limiting grooves 22 on the top surface and the bottom surface of the center rod 2 through the two pairs of second protruding parts 31, so as to ensure the stability and reliability of the movement of the side seam cover 3.

[0078] Further, in order to improve the stability of the movement of the side seam cover 3, as shown in Figure 8 on the basis of the above embodiment, the side seam cover 3 is provided with a U-shaped groove 32, the U-shaped groove 32 is slidably arranged on the side of the center rod 2, and the second protruding part 31 is arranged on the inner side of the two groove walls parallel to each other of the U-shaped groove 32. That is, the width of the U-shaped groove 32 is greater than or equal to the thickness of the center rod 2, when the second protruding part 31 slides relative to the second limiting groove 22, the two sides of the center rod 2 slide in the U-shaped groove 32 of the two side seam covers 3 respectively, so as to avoid the side seam cover 3 from being separated from the center rod 2, and ensure the stability of the movement of the side seam cover 3.

[0079] as shown in Figure 8As shown, preferably, the side seam cover 3 comprises a base plate, one side of the base plate is provided with a convex ridge cover for filling the gap between the two adjacent arc-shaped curling plates 1, and the other side of the base plate is provided with two parallel limiting plates, and the two limiting plates and the base plate form a U-shaped groove 32.

[0080] In addition, in order to facilitate the definition of the stroke of the center rod 2, on the basis of the above-mentioned embodiments, as shown in Figure 6 As shown, the center rod 2 is provided with a third limiting groove 23, as shown in Figure 9 and 11 As shown, the machine body part 100 of the curling device is provided with a limiting screw 4, which extends into the third limiting groove 23 to limit the stroke of the center rod 2. That is, when the center rod 2 is assembled with the machine body part 100, the limiting screw 4 is installed on the machine body part 100 and extends into the third limiting groove 23. It can be understood that the third limiting groove 23 has a certain length, and when the center rod 2 moves, the third limiting groove 23 moves relative to the limiting screw 4, and when one end of the third limiting groove 23 contacts the limiting screw 4, it indicates that the center rod 2 has moved to the limit position, and under the limiting of the limiting screw 4, the center rod 2 cannot continue to move.

[0081] It should be noted that in the above-mentioned embodiments, the way of applying external force to the center rod 2 is not limited, for example, the center rod 2 can be manually pushed to move; or a linear motor or other power mechanism that can output linear motion can be provided to automatically move the center rod 2.

[0082] In addition, the locking method of the position of the center rod 2 after moving to the position is not limited, for example, a special locking mechanism can be provided to lock the position of the center rod 2 when the curling barrel has different diameters. The locking mechanism can be a fastener, or the power mechanism can control the position of the center rod 2 by starting and stopping.

[0083] It should be further noted that in the present specification, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations.

[0084] In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between each embodiment can be referred to each other.

[0085] The curling iron provided by the present application is described in detail above. The principles and implementation manners of the present application are described by applying specific examples in this paper, and the above description of the examples is only used to help understand the method of the present application and its core idea. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A curling iron, characterized in that The utility model relates to a curling iron, which comprises: at least two arc-shaped curling boards (1), all of which are coaxially arranged to enclose a curling barrel; a central rod (2) which is inserted into the curling barrel and can move axially under the action of external force; wherein one of the arc-shaped curling boards (1) and the central rod (2) is provided with a first limiting groove (21), and the other is provided with a first protruding part (11) which is in sliding cooperation with the first limiting groove (21); when the central rod (2) moves, the first protruding part (11) cooperates with different positions of the first limiting groove (21), so that the arc-shaped curling boards (1) are close to or away from the central axis, so that the curling barrel has different diameters; and further comprises side seam covers (3) which are the same in number as the arc-shaped curling boards (1); one of the side seam covers (3) and the central rod (2) is provided with a second limiting groove (22), and the other is provided with a second protruding part (31) which is in sliding cooperation with the second limiting groove (22); when the central rod (2) moves, the second protruding part (31) cooperates with different positions of the second limiting groove (22), so that the side seam covers (3) are close to or away from the central axis, so that the side seam covers (3) make room or fill the gap between two adjacent arc-shaped curling boards (1).

2. The curling iron of claim 1, wherein, The first limiting groove (21) comprises a first groove section (211), a second groove section (212) and a first transition groove section (213) connected between the first groove section (211) and the second groove section (212); the first groove section (211) and the second groove section (212) are both parallel to the central axis, and the first groove section (211) is closer to the first central surface of the central rod (2) than the second groove section (212).

3. The curling iron of claim 2, wherein, The second limiting groove (22) comprises a third groove section (221), a fourth groove section (222) and a second transition groove section (223) connected between the third groove section (221) and the fourth groove section (222); the third groove section (221) and the fourth groove section (222) are both parallel to the central axis, and the third groove section (221) is closer to the second central surface of the central rod (2) than the fourth groove section (222).

4. The curling iron of claim 3, wherein, When the first protruding part (11) slides along the first transition groove section (213), the second protruding part (31) slides along the third groove section (221); when the first protruding part (11) slides along the second groove section (212), the second protruding part (31) slides along the second transition groove section (223).

5. A curling iron according to any of claims 1-4, characterised in that The number of the arc-shaped curling boards (1) is two, and the two arc-shaped curling boards (1) are symmetrically arranged about the central rod (2).

6. The curling iron of claim 5, wherein, Two first limiting grooves (21) are arranged on each side of the two ends of the central rod (2); the two first limiting grooves (21) on the same end and the same side form a Y-shaped groove which is symmetric about the central surface of the central rod (2). Two first protruding parts (11) are arranged at two ends of each of the two arc-shaped curling iron plates (1), and the two first protruding parts (11) at the same end of the arc-shaped curling iron plate (1) are respectively in sliding fit with two first limiting grooves (21) corresponding to the same end and different sides of the center rod (2).

7. The curling iron of claim 5, wherein, The top surface and the bottom surface of the center rod (2) are respectively provided with two groups of limiting groove groups which are symmetrical about the center line of the center rod (2), and each group of limiting groove groups comprises two second limiting grooves (22) which are arranged along the axial direction of the center rod (2) and are spaced apart from each other. Each of the two side seam covers (3) is provided with two pairs of second protruding parts (31), and each pair of second protruding parts (31) is respectively in sliding fit with two second limiting grooves (22) corresponding to the top surface and the bottom surface.

8. The curling iron of claim 5, wherein, The side seam cover (3) is provided with a U-shaped groove (32), the U-shaped groove (32) is slidably arranged on the side of the center rod (2), and the second protruding part (31) is arranged on the inner side of the two groove walls parallel to each other of the U-shaped groove (32).

9. A curling iron according to any one of claims 1-4, characterized in that The center rod (2) is provided with a third limiting groove (23), the curling iron body part (100) is provided with a limiting screw (4), and the limiting screw (4) extends into the third limiting groove (23) to limit the stroke of the center rod (2).

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