Bidirectional hair curling accessory

Abstract

The bidirectional hair curling accessory comprises an outer barrel, an inner barrel and an air guide piece, the side wall of the outer barrel is provided with a first air outlet, a second air outlet and a plurality of first clamping parts arranged at intervals in the vertical direction of the outer barrel, and the first clamping parts are located between the first air outlet and the second air outlet; the inner cylinder is provided with a third air outlet and an air inlet, the third air outlet is located in the side wall of the inner cylinder, and the inner cylinder is rotatably installed in the outer cylinder; the air guide piece is provided with a plurality of second clamping parts which are arranged at intervals in the vertical direction of the air guide piece, and the second clamping parts are connected with the first clamping parts in a clamped mode; the multiple second clamping parts are arranged on the air guide pieces, the air guide pieces are connected with the first clamping parts on the outer barrel in the clamping mode through the second clamping parts, the air guide pieces are connected with the outer barrel in the clamping mode, and the multiple air guide pieces are arranged in the vertical direction, so that the air guide pieces cannot fall off in the high-temperature state; and air duct failure caused by high-temperature deformation is avoided.

Description

Technical Field

[0001] The utility model relates to the field of hair dryers, in particular to a bidirectional hair curling accessory. Background Art

[0002] The existing two-way air outlet curling attachment includes an outer barrel and an air guide plate. The air guide plate is glued to the outside of the outer barrel. When the curling attachment works at high temperature for a long time, the glue on the air guide plate may melt at high temperature, causing the air guide plate to fall off, thus affecting the service life of the curling attachment. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a bidirectional hair curling accessory.

[0004] According to the first aspect of the present invention, the two-way curling attachment includes an outer tube, an inner tube and an air guide plate, the side wall of the outer tube is provided with a first air outlet and a second air outlet spaced apart along the circumferential direction of the outer tube and a plurality of first clamping parts spaced apart along the upper and lower directions of the outer tube, the first clamping part is located between the first air outlet and the second air outlet; the inner tube has a third air outlet and an air inlet, the third air outlet is located on the side wall of the inner tube, the inner tube is rotatably installed in the outer tube so that the third air outlet can be connected to the first air outlet or the second air outlet; the air guide plate has a plurality of second clamping parts spaced apart along the upper and lower directions of the air guide plate, and the plurality of second clamping parts are respectively clamped and connected with the plurality of first clamping parts.

[0005] The bidirectional hair curling attachment according to the embodiment of the present invention has at least the following technical effects: a plurality of second clamping portions are provided on the air guide piece, and the air guide piece is clamped and connected to the first clamping portion on the outer tube through the second clamping portions. Since the air guide piece and the outer tube are clamped and connected, and a plurality of second clamping portions are provided in the upper and lower directions, the air guide piece will not fall off under high temperature conditions, nor will it deform under high temperature, causing the air duct to fail.

[0006] According to some embodiments of the present invention, the second clamping portion is provided at the top, bottom and middle of the air guide plate.

[0007] According to some embodiments of the present invention, the second clamping portion is inserted into the first clamping portion so as to be movable up and down, and the air guide plate is fixed to the outer cylinder via a detachable fastener.

[0008] According to some embodiments of the present invention, a base is further included, and the bottom of the outer cylinder and the bottom of the inner cylinder are both installed on the base, a first positioning structure is provided between the top of the outer cylinder and the top of the inner cylinder, and a second positioning structure is provided between the bottom of the inner cylinder and the base, and the first positioning structure and the second positioning structure are both used to position the rotation position of the inner cylinder so that the position of the third air outlet can be aligned with the position of the first air outlet or the position of the second air outlet.

[0009] According to some embodiments of the present invention, the first positioning structure includes a rotation cap, a positioning member and a groove, the rotation cap is rotatably mounted on the top of the outer cylinder and fixedly connected to the inner cylinder, the positioning member is fixedly connected to the bottom of the rotation cap, the outer side wall of the positioning member has a first protrusion, the groove is arranged at the top of the outer cylinder, the positioning member is rotatably arranged in the groove, and the inner side wall of the groove is provided with two first recessed portions that are clamped and connected to the first protrusion, and the two first recessed portions are arranged in sequence along the circumferential direction of the outer cylinder. When the positioning member rotates, the first protrusion can move from one of the first recessed portions to the other first recessed portion.

[0010] According to some embodiments of the present invention, the second positioning structure includes a second protrusion and two second recessed portions that are clip-connected to the second protrusion, the second protrusion is arranged on the inner side wall of the inner cylinder, the base has an extension portion located in the inner cylinder, and the two second recessed portions are arranged at intervals along the circumferential direction of the inner cylinder on one side of the extension portion close to the inner side wall of the inner cylinder, and when the inner cylinder rotates, the second protrusion can move from one of the second recessed portions to the other second recessed portion.

[0011] According to some embodiments of the present invention, the outer cylinder includes a plurality of first connecting frames and a plurality of second connecting frames, the plurality of first connecting frames are arranged at intervals along the circumferential direction of the outer cylinder, a second connecting frame is arranged between two adjacent first connecting frames, the first air outlet is formed between the first connecting frame and one of the second connecting frames, and the second air outlet is formed between the first connecting frame and another of the second connecting frames.

[0012] According to some embodiments of the present invention, the outer wall of the inner cylinder has a first sealing rubber block and a second sealing rubber block spaced apart along the circumferential direction of the inner cylinder, the first sealing rubber block extends into the first air outlet, the second sealing rubber block extends into the second air outlet, and the third air outlet is located between the first sealing rubber block and the second sealing rubber block;

[0013] The inner cylinder is capable of rotating between a first position and a second position;

[0014] When the inner cylinder is in the first position, the first sealing rubber block abuts and seals against a side of the first connecting frame away from the second sealing rubber block, and the third air outlet is connected to the second air outlet;

[0015] When the inner cylinder is in the second position, the second sealing rubber block abuts and seals against a side of the first connecting frame away from the first sealing rubber block, and the third air outlet is communicated with the first air outlet.

[0016] According to some embodiments of the present invention, when the inner cylinder is in the first position, the second sealing rubber block can abut and seal with the outer side wall of another second connecting frame; when the inner cylinder is in the second position, the first sealing rubber block can abut and seal with the outer side wall of one of the second connecting frames.

[0017] According to some embodiments of the present invention, the outer wall of the inner cylinder has a third sealing rubber block and a fourth sealing rubber block, and another second connecting frame has a sealing cavity on a side close to the inner cylinder, and the first sealing rubber block, the second sealing rubber block, the third sealing rubber block and the fourth sealing rubber block are sequentially spaced along the circumferential direction of the inner cylinder, and the third sealing rubber block and the fourth sealing rubber block both extend into the sealing cavity;

[0018] When the inner cylinder is in the first position, the side of the fourth sealing rubber block away from the third sealing rubber block abuts against the second inner wall of the sealing cavity, and the third sealing rubber block does not abut against the first inner wall of the sealing cavity;

[0019] When the inner cylinder is in the second position, the side of the third sealing rubber block away from the fourth sealing rubber block abuts against the first inner wall of the sealing cavity, and the fourth sealing rubber block does not abut against the second inner wall of the sealing cavity.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is an axonometric cross-sectional view of a two-way curling attachment;

[0023] Figure 2 This is a schematic diagram of the structure of the two-way curling accessory without an air guide installed on one side;

[0024] Figure 3It is a longitudinal cross-sectional view of a two-way curling attachment;

[0025] Figure 4 Schematic diagram of the structure of the air guide;

[0026] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0027] Figure 6 This is a schematic diagram of the structure of the two-way curling attachment without the rotation cap installed on the top;

[0028] Figure 7 is a cross-sectional view of the bidirectional curling attachment when the inner barrel is in the first position;

[0029] Figure 8 2 is a cross-sectional view of the bidirectional curling accessory when the inner barrel is in the second position.

[0030] Figure numerals: outer cylinder 100, first air outlet 110, second air outlet 120, first clamping portion 130, first connecting frame 140, second connecting frame 150, sealing chamber 151, first inner wall 1511, second inner wall 1512, clamping column 160, inner cylinder 200, third air outlet 210, air inlet 220, first sealing rubber block 230, second sealing rubber block 240, third sealing rubber block 250, fourth sealing rubber block 260, air guide plate 300, second clamping portion 310, folded edge 320, clamping hole 321, base 400, extending portion 410, first positioning structure 500, rotation cap 510, positioning member 520, first protrusion 521, groove 530, first recessed portion 531, second positioning structure 600, second protrusion 610, second recessed portion 620. DETAILED DESCRIPTION

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0033] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] Reference Figure 1 、 2 As shown, the bidirectional curling attachment according to the embodiment of the present invention includes an outer cylinder 100, an inner cylinder 200 and an air guide fin 300. The side wall of the outer cylinder 100 is provided with a first air outlet 110 and a second air outlet 120 spaced apart along the circumferential direction of the outer cylinder 100, and a plurality of first clamping portions 130 spaced apart along the vertical direction of the outer cylinder 100. The first clamping portion 130 is located between the first air outlet 110 and the second air outlet 120. Figure 1 、 3 As shown, the inner cylinder 200 has a third air outlet 210 and an air inlet 220. Figure 1 As shown, the third air outlet 210 is located on the side wall of the inner cylinder 200, and the inner cylinder 200 is rotatably installed in the outer cylinder 100 so that the third air outlet 210 can be connected to the first air outlet 110 or the second air outlet 120; Figure 4 、 5 As shown, the air guide plate 300 has a plurality of second clamping portions 310 spaced apart in the vertical direction of the air guide plate 300. Figure 3 As shown, the plurality of second clamping portions 310 are respectively clamped and connected with the plurality of first clamping portions 130 .

[0036] A plurality of second clamping portions 310 are provided on the air guide piece 300, and the air guide piece 300 is clamped and connected to the first clamping portion 130 on the outer cylinder 100 through the second clamping portions 310. Since the air guide piece 300 and the outer cylinder 100 are clamped and connected, and a plurality of second clamping portions 310 are provided in the upper and lower directions, the air guide piece 300 will not fall off under high temperature conditions, and will not deform under high temperature, causing failure of the air duct.

[0037] During operation, the inner cylinder 200 is rotated so that the third air outlet 210 on the inner cylinder 200 is connected to the first air outlet 110 or the second air outlet 120. External air enters the inner cylinder 200 from the air inlet 220, passes through the third air outlet 210, and is discharged from the first air outlet 110 or passes through the third air outlet 210 and is discharged from the second air outlet 120.

[0038] Specifically, the air inlet 220 is arranged at the bottom of the inner cylinder 200, and the air guide plate 300 is used to guide the wind discharged from the first air outlet 110 so that the wind discharged from the first air outlet 110 is blown out counterclockwise, and is used to guide the wind discharged from the second air outlet 120 so that the wind discharged from the second air outlet 120 is blown out clockwise.

[0039] In some embodiments of the present invention, second clamping portions 310 are provided at the top, bottom and middle of the air guide plate 300 to firmly fix the air guide plate 300 on the outer cylinder 100 and prevent the air guide plate 300 from deforming due to high temperature.

[0040] In a further embodiment of the present invention, Figure 5 As shown, the second clamping portion 310 can be inserted into the first clamping portion 130 in a vertically movable manner, and the air guide plate 300 is fixed to the outer cylinder 100 by a detachable fastener. This fixing method facilitates the installation and removal of the air guide plate 300.

[0041] Specifically, if Figure 2 、 4 As shown, a clamping column 160 is provided at the top of the outer cylinder 100, and a folded edge 320 is provided at the top of the air guide plate 300. The folded edge 320 has a clamping hole 321. The clamping hole 321 is sleeved outside the clamping column 160, thereby clamping and connecting the top of the outer cylinder 100 with the top of the air guide plate 300. The fastener is a screw, and the folded edge 320 is fixed to the top of the outer cylinder 100 by the screw; Figure 5 As shown, a plurality of second clamping portions 310 are provided below the folded edge 320 , the first clamping portion 130 is an upper-open clamping groove, and the second clamping portion 310 is a 7-shaped buckle that is clamped to the clamping groove.

[0042] In some embodiments of the present invention, Figure 3 As shown, it also includes a base 400, the bottom of the outer cylinder 100 and the bottom of the inner cylinder 200 are both installed on the base 400, and a first positioning structure 500 is provided between the top of the outer cylinder 100 and the top of the inner cylinder 200. Figure 1 As shown, there is a second positioning structure 600 between the bottom of the inner cylinder 200 and the base 400. The first positioning structure 500 and the second positioning structure 600 are both used to position the rotation position of the inner cylinder 200 so that the position of the third air outlet 210 can be aligned with the position of the first air outlet 110 or the position of the second air outlet 120.

[0043] By providing a first positioning structure 500 and a second positioning structure 600 at the top and bottom of the inner cylinder 200, respectively, the positions of the third air outlets 210 at the upper and lower ends of the inner cylinder 200 can be aligned with the positions of the first air outlet 110 or the second air outlet 120, effectively solving the problem of air leakage caused by the upper and lower imbalance when the user switches the curling direction.

[0044] In a further embodiment of the present invention, Figure 3 As shown, the first positioning structure 500 includes a rotation cap 510, a positioning member 520 and a groove 530. The rotation cap 510 is rotatably mounted on the top of the outer cylinder 100 and fixedly connected to the inner cylinder 200. The positioning member 520 is fixedly connected to the bottom of the rotation cap 510. Figure 6 As shown, the outer wall of the positioning member 520 has a first protrusion 521, and the groove 530 is arranged at the top of the outer cylinder 100. The positioning member 520 is rotatably arranged in the groove 530. The inner wall of the groove 530 is provided with two first recessed portions 531 that are snap-connected to the first protrusion 521. The two first recessed portions 531 are arranged in sequence along the circumferential direction of the outer cylinder 100. When the positioning member 520 rotates, the first protrusion 521 can move from one of the first recessed portions 531 to the other first recessed portion 531.

[0045] The first protrusion 521 is engaged with the two first recesses 531 to facilitate the positioning of the inner cylinder 200, ensuring that the inner cylinder 200 rotates to a position where the third air outlet 210 is connected to the first air outlet 110 or to a position where the third air outlet 210 is connected to the second air outlet 120.

[0046] Assuming that the first protrusion 521 is engaged with one of the first recessed portions 531, and the third air outlet 210 is already connected to the first air outlet 110, when the wind direction needs to be switched, the user rotates the rotation cap 510, and the rotation cap 510 drives the positioning member 520 to rotate in the groove 530 and drives the inner cylinder 200 to rotate, so that the first protrusion 521 on the positioning member 520 moves from one of the first recessed portions 531 to the other first recessed portion 531, and the third air outlet 210 is turned to be connected to the second air outlet 120. When the wind direction needs to be switched again, the user rotates the rotation cap 510 in the opposite direction, so that the first protrusion 521 on the positioning member 520 moves from the other first recessed portion 531 to one of the first recessed portions 531, and the third air outlet 210 is turned to be connected to the first air outlet 110.

[0047] In a further embodiment of the present invention, Figure 1As shown, the second positioning structure 600 includes a second protrusion 610 and two second recesses 620 that are snap-connected to the second protrusion 610. The second protrusion 610 is arranged on the inner side wall of the inner cylinder 200. The base 400 has an insertion portion 410 located in the inner cylinder 200. The two second recesses 620 are arranged on the insertion portion 410 at intervals along the circumferential direction of the inner cylinder 200. When the inner cylinder 200 rotates, the second protrusion 610 can move from one of the second recesses 620 to the other second recess 620.

[0048] The second protrusion 610 is engaged with the two second recesses 620 to facilitate the positioning of the rotation of the inner cylinder 200, ensuring that the inner cylinder 200 rotates to a position where the third air outlet 210 is connected to the first air outlet 110 or to a position where the third air outlet 210 is connected to the second air outlet 120.

[0049] Assuming that the second protrusion 610 is engaged with one of the second recessed portions 620, and the third air outlet 210 is connected to the first air outlet 110, when the wind direction needs to be switched, the user rotates the rotation cap 510, and the rotation cap 510 drives the inner cylinder 200 to rotate, so that the second protrusion 610 on the inner cylinder 200 moves from one of the second recessed portions 620 to the other second recessed portion 620, and the third air outlet 210 is turned to be connected to the second air outlet 120. When the wind direction needs to be switched again, the user rotates the rotation cap 510 in the opposite direction, so that the second protrusion 610 on the inner cylinder 200 moves from the other second recessed portion 620 to one of the second recessed portions 620, and the third air outlet 210 is turned to be connected to the first air outlet 110.

[0050] In some embodiments of the present invention, Figure 7 As shown, the outer cylinder 100 includes a plurality of first connecting frames 140 and a plurality of second connecting frames 150. The plurality of first connecting frames 140 are arranged at intervals along the circumferential direction of the outer cylinder 100. A second connecting frame 150 is arranged between two adjacent first connecting frames 140. A first air outlet 110 is formed between the first connecting frame 140 and one of the second connecting frames 150, and a second air outlet 120 is formed between the first connecting frame 140 and the other second connecting frame 150. Such a structure facilitates the manufacture of the outer cylinder 100.

[0051] In a further embodiment of the present invention, Figure 7 As shown, the outer wall of the inner cylinder 200 has a first sealing rubber block 230 and a second sealing rubber block 240 spaced apart along the circumferential direction of the inner cylinder 200. The first sealing rubber block 230 extends into the first air outlet 110, the second sealing rubber block 240 extends into the second air outlet 120, and the third air outlet 210 is located between the first sealing rubber block 230 and the second sealing rubber block 240.

[0052] The inner cylinder 200 is capable of rotating between a first position and a second position;

[0053] like Figure 7 As shown, when the inner cylinder 200 is in the first position, the first sealing rubber block 230 is in abutment and sealed with the side of the first connecting frame 140 away from the second sealing rubber block 240, and the third air outlet 210 is in communication with the second air outlet 120;

[0054] like Figure 8 As shown, when the inner cylinder 200 is in the second position, the second sealing rubber block 240 abuts and seals against a side of the first connecting frame 140 away from the first sealing rubber block 230 , and the third air outlet 210 is connected to the first air outlet 110 .

[0055] By providing the first sealing rubber block 230 and the second sealing rubber block 240, the third air outlet 210 and the first air outlet 110 or the second air outlet 120 are connected, so that the inner cylinder 200 only needs to use a single material of hard rubber, which simplifies the mold and injection molding process, thereby reducing costs and replacing the existing process of using high-temperature resistant liquid silicone combined with in-mold injection molding.

[0056] When working, Figure 7 As shown, the inner cylinder 200 rotates to the first position, and the inner cylinder 200 abuts against the first connecting frame 140 through the first sealing rubber block 230, so that the first sealing rubber block 230 closes the first air outlet 110, so that the third air outlet 210 is only connected to the second air outlet 120; Figure 8 As shown, when it is rotated to the second position, the inner cylinder 200 abuts against the second connecting frame 150 through the second sealing rubber block 240, so that the second sealing rubber block 240 closes the second air outlet 120, so that the third air outlet 210 is only connected to the first air outlet 110.

[0057] In a further embodiment of the present invention, the first sealing rubber block 230 and the second sealing rubber block 240 are both integrally formed with the inner cylinder 200 .

[0058] In a further embodiment of the present invention, Figure 7 As shown, when the inner cylinder 200 is in the first position, the second sealing rubber block 240 can abut and seal against the outer side wall of the other second connecting frame 150; Figure 8 As shown, when the inner cylinder 200 is in the second position, the first sealing rubber block 230 can abut against and seal against the outer side wall of one of the second connecting frames 150 .

[0059] By enabling the first sealing block 230 and the second sealing block 240 to abut and seal against the second connecting frame 150, it is ensured that wind does not enter the gap between the first sealing block 230 and one of the second connecting frames 150 or the gap between the second sealing block 240 and the other second connecting frame 150, thereby ensuring the connectivity between the third air outlet 210 and the first air outlet 110 or the second air outlet 120.

[0060] In a further embodiment of the present invention, Figure 7 As shown, the outer wall of the inner cylinder 200 has a third sealing rubber block 250 and a fourth sealing rubber block 260, and the other second connecting frame 150 has a sealing cavity 151 on the side close to the inner cylinder 200. The first sealing rubber block 230, the second sealing rubber block 240, the third sealing rubber block 250 and the fourth sealing rubber block 260 are sequentially spaced along the circumferential direction of the inner cylinder 200, and the third sealing rubber block 250 and the fourth sealing rubber block 260 both extend into the sealing cavity 151;

[0061] like Figure 7 As shown, when the inner cylinder 200 is in the first position, the side of the fourth sealing rubber block 260 away from the third sealing rubber block 250 abuts against the second inner wall 1512 of the sealing cavity 151, and the third sealing rubber block 250 does not abut against the first inner wall 1511 of the sealing cavity 151;

[0062] like Figure 8 As shown, when the inner cylinder 200 is in the second position, the side of the third sealing rubber block 250 away from the fourth sealing rubber block 260 abuts against the first inner wall 1511 of the sealing cavity 151, and the fourth sealing rubber block 260 does not abut against the second inner wall 1512 of the sealing cavity 151.

[0063] The third sealing rubber block 250 and the fourth sealing rubber block 260 are provided to improve the sealing effect between the inner cylinder 200 and the outer cylinder 100 .

[0064] Throughout this specification, references to the terms "some embodiments" or "it is contemplated that" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0065] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A two-way curling accessory, characterized in that: include: An outer cylinder, wherein a side wall of the outer cylinder is provided with a first air outlet and a second air outlet spaced apart along the circumferential direction of the outer cylinder, and a plurality of first clamping portions spaced apart along the vertical direction of the outer cylinder, wherein the first clamping portion is located between the first air outlet and the second air outlet; an inner cylinder having a third air outlet and an air inlet, wherein the third air outlet is located on a side wall of the inner cylinder, and the inner cylinder is rotatably mounted in the outer cylinder so that the third air outlet can communicate with the first air outlet or the second air outlet; The air guide plate has a plurality of second clamping parts spaced apart in the vertical direction of the air guide plate, and the plurality of second clamping parts are respectively clamped and connected with the plurality of first clamping parts.

2. The bidirectional hair curling accessory according to claim 1, characterized in that: The second clamping parts are provided on the top, bottom and middle of the air guide piece.

3. The bidirectional hair curling accessory according to claim 1 or 2, characterized in that: The second clamping portion is plugged into the first clamping portion in a manner that it can move up and down, and the air guide plate is fixed to the outer cylinder via a detachable fastener.

4. The bidirectional hair curling accessory according to claim 1, wherein: It also includes a base, the bottom of the outer cylinder and the bottom of the inner cylinder are both installed on the base, a first positioning structure is provided between the top of the outer cylinder and the top of the inner cylinder, and a second positioning structure is provided between the bottom of the inner cylinder and the base, and the first positioning structure and the second positioning structure are both used to position the rotation position of the inner cylinder so that the position of the third air outlet can be aligned with the position of the first air outlet or the position of the second air outlet.

5. The bidirectional hair curling accessory according to claim 4, characterized in that: The first positioning structure includes a rotation cap, a positioning member and a groove. The rotation cap is rotatably mounted on the top of the outer cylinder and fixedly connected to the inner cylinder. The positioning member is fixedly connected to the bottom of the rotation cap. The outer side wall of the positioning member has a first protrusion. The groove is provided at the top of the outer cylinder. The positioning member is rotatably provided in the groove. The inner side wall of the groove is provided with two first recessed portions that are snap-connected to the first protrusion. The two first recessed portions are sequentially arranged along the circumferential direction of the outer cylinder. When the positioning member rotates, the first protrusion can move from one of the first recessed portions to the other of the first recessed portions.

6. The bidirectional hair curling accessory according to claim 4 or 5, characterized in that: The second positioning structure includes a second protrusion and two second recessed portions that are clip-connected to the second protrusion. The second protrusion is arranged on the inner side wall of the inner cylinder. The base has an extension portion located in the inner cylinder. Two second recessed portions are arranged on the extension portion at intervals along the circumferential direction of the inner cylinder. When the inner cylinder rotates, the second protrusion can move from one of the second recessed portions to the other second recessed portion.

7. The bidirectional hair curling accessory according to claim 1, wherein: The outer cylinder includes a plurality of first connecting frames and a plurality of second connecting frames, wherein the plurality of first connecting frames are arranged at intervals along the circumferential direction of the outer cylinder, and a second connecting frame is arranged between two adjacent first connecting frames. The first air outlet is formed between the first connecting frame and one of the second connecting frames, and the second air outlet is formed between the first connecting frame and another of the second connecting frames.

8. The bidirectional hair curling accessory according to claim 7, characterized in that: The outer wall of the inner cylinder has a first sealing rubber block and a second sealing rubber block spaced apart along the circumferential direction of the inner cylinder, the first sealing rubber block extends into the first air outlet, the second sealing rubber block extends into the second air outlet, and the third air outlet is located between the first sealing rubber block and the second sealing rubber block; The inner cylinder is capable of rotating between a first position and a second position; When the inner cylinder is in the first position, the first sealing rubber block abuts and seals against a side of the first connecting frame away from the second sealing rubber block, and the third air outlet is connected to the second air outlet; When the inner cylinder is in the second position, the second sealing rubber block abuts and seals against a side of the first connecting frame away from the first sealing rubber block, and the third air outlet is communicated with the first air outlet.

9. The bidirectional hair curling accessory according to claim 8, characterized in that: When the inner tube is in the first position, the second sealing rubber block can abut and seal against the outer side wall of another second connecting frame; when the inner tube is in the second position, the first sealing rubber block can abut and seal against the outer side wall of one of the second connecting frames.

10. The bidirectional hair curling accessory according to claim 8, characterized in that: The outer wall of the inner cylinder has a third sealing rubber block and a fourth sealing rubber block, and the second connecting frame has a sealing cavity on a side close to the inner cylinder. The first sealing rubber block, the second sealing rubber block, the third sealing rubber block and the fourth sealing rubber block are sequentially spaced along the circumference of the inner cylinder, and the third sealing rubber block and the fourth sealing rubber block both extend into the sealing cavity; When the inner cylinder is in the first position, the side of the fourth sealing rubber block away from the third sealing rubber block abuts against the second inner wall of the sealing cavity, and the third sealing rubber block does not abut against the first inner wall of the sealing cavity; When the inner cylinder is in the second position, the side of the third sealing rubber block away from the fourth sealing rubber block abuts against the first inner wall of the sealing cavity, and the fourth sealing rubber block does not abut against the second inner wall of the sealing cavity.

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