A curling iron

Abstract

The application discloses a curler, which comprises at least two arc-shaped curling plates, all of which are coaxially arranged to enclose a curling cylinder; a center rod is inserted into the curling cylinder and can move axially under the action of external force; one of the arc-shaped curling plates 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 plates are close to or far away from the center axis, so that the curling cylinder has different diameters; a self-locking mechanism is used to lock the center rod in at least two positions, so that the curling cylinder is kept at positions with at least two different diameters. The curling cylinder of the curler is a variable-diameter curling cylinder; external force is applied to the center rod, so that the curling cylinder can be switched between different diameters; the self-locking mechanism is used to keep the curling cylinder in a certain diameter state, the operation is simple, and the curling flower with different sizes can be met.

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 to heat up, so that the heat of the curling barrel is dissipated outward from the hair wound inside, to iron and curl out curling flowers and 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, etc. When curling, a curling iron with a curling barrel of a suitable diameter is selected according to the size of the curling flowers required, that is, once a curling iron is selected, the diameter of the curling barrel of the curling iron is also determined, and therefore, the size of the curling flowers ironed and curled out 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 out curling flowers of different sizes. In this case, the only way to meet the needs of curling flowers of different sizes 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 aesthetics, etc.

[0006] In view of the above, how to provide a curling iron that can iron and curl out curling flowers of different sizes, 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 at present. SUMMARY

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

[0008] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0009] A curling iron, comprising:

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

[0011] a center rod inserted into the curling barrel and axially movable under external force; 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 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;

[0012] a self-locking mechanism for locking the center rod in at least two positions, so that the curling barrel is kept at positions with at least two different diameters.

[0013] Preferably, the center rod can be locked in a first position and a second position, so that the curling barrel has two diameters of different sizes.

[0014] Preferably, the self-locking mechanism comprises:

[0015] a guide column connected to the body part of the curling device, the center part is provided with a through hole, the center rod is inserted into the through hole, and the inner wall of the through hole is provided with a first limiting part and a second limiting part;

[0016] a self-locking buckle provided in the through hole, one of the self-locking buckle and the center rod is provided with a first pushing part, and the other is provided with a second pushing part for cooperating with the first pushing part to push, so that the self-locking buckle moves while rotating when the center rod moves;

[0017] a resilient member provided at one end of the self-locking buckle away from the center rod, for driving the self-locking buckle to cooperate with the first limiting part or the second limiting part when the external force applied to the center rod is removed; when the self-locking buckle cooperates with the first limiting part, the center rod is located in the first position; when the self-locking buckle cooperates with the second limiting part, the center rod is located in the second position.

[0018] Preferably, the inner wall of the through hole is provided with a third protruding part protruding radially inward, one side of the third protruding part away from the center rod is provided with two layers of stepped surfaces, each layer of the stepped surfaces has a preset slope, and the slope directions of the two layers of the stepped surfaces are the same, and the first limiting part is formed at the connecting surface between the two layers of the stepped surfaces.

[0019] Preferably, the number of the third protruding parts is at least two, and any adjacent two of the third protruding parts have a gap therebetween, and the gap forms the second limiting part.

[0020] Preferably, the outer circumferential part of one end of the center rod close to the self-locking buckle is provided with a bone site corresponding to the gap one by one, and the bone site is inserted into the gap.

[0021] Preferably, the first pushing part comprises:

[0022] a first top tooth arranged at one end of the self-locking buckle towards the bone site;

[0023] a first meshing tooth arranged at an end of the center rod;

[0024] the second pushing part comprises:

[0025] a protrusion arranged at the outer circumferential part of the self-locking buckle, and an inclined surface for cooperating with the first top tooth is arranged at one end of the protrusion towards the first top tooth;

[0026] a second meshing tooth arranged at an end of the self-locking buckle, which cooperates with the first meshing tooth to push.

[0027] Preferably, the length of the bone site is greater than the length of the gap.

[0028] Preferably, the center rod is provided with a third limiting part corresponding to the position of the bone site, and the guide column is provided with a first limiting screw which extends into the third limiting part and the bone site.

[0029] Preferably, it further comprises a second limiting screw for radially limiting the self-locking buckle, which is sequentially arranged in the self-locking buckle and the guide column and is fixedly connected with the center rod.

[0030] The curler provided by the present application utilizes two or more arc-shaped curling plates to splice to form a curling cylinder, and the center rod is pushed by external force to drive each arc-shaped curling plate to move radially. It can be understood that, by reasonably designing the shape of the first limiting groove, the axial movement of the center rod can be ensured to be transmitted to the radial movement of the arc-shaped curling plate. Therefore, by sliding the first protruding part relative to the first limiting groove, the axial movement of the center rod can be converted into the radial movement of the arc-shaped curling plate, 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 cylinders with different diameters. When the curling cylinder has a suitable diameter, the position of the center rod is locked by using a self-locking mechanism, and then the arc-shaped curling plate can be kept at a certain radial position, so that the curling cylinder is kept at a position with a required diameter for operation.

[0031] Therefore, the curling cylinder of the curler provided by the present application is a variable-diameter curling cylinder. By applying external force to the center rod, the switching between curling cylinders with different diameters can be realized, and the self-locking mechanism can keep the curling cylinder in a certain diameter state. The operation is simple and convenient, and can meet the curling requirements of different sizes, facilitate curling operation, and improve the styling efficiency and styling effect. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only need to explain the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative effort based on the provided drawings.

[0033] Figure 1 Structure diagram of the curler provided by the embodiment of the present application;

[0034] Figure 2 Structure diagram of the curler provided by the embodiment of the present application; Figure 1

[0035] Figure 3 Structure diagram of the machine body part of the curler shown in the embodiment of the present application; Figure 1

[0036] Figure 4 Structure diagram of the machine core part of the curler;

[0037] Figure 5 Structure diagram of the center rod and the self-locking mechanism of the machine core part;

[0038] Figure 6 Structure diagram of the curler after assembly; Figure 5

[0039] Structure diagram of the guide column in the embodiment of the present application; Figure 7 Figure 5 Structure diagram of the self-locking buckle in the embodiment of the present application;

[0040] Figure 8 Figure 5 Structure diagram of the self-locking buckle in the embodiment of the present application;

[0041] Figure 9 Structure diagram of the matching state of the center rod and the self-locking buckle when the center rod is in the first position;

[0042] Figure 10 Structure diagram of the matching state of the center rod and the self-locking buckle when the center rod is in the second position;

[0043] Figure 11 Structure diagram of the center rod;

[0044] Figure 12 Structure diagram of the arc-shaped curling plate;

[0045] Figure 13 Structure diagram of the side seam cover;

[0046] Figure 14 Structure diagram of the curling barrel when the center rod is in the first position;

[0047] Figure 15 Structure diagram of the curling barrel when the center rod is in the second position;​​​​Figure 14 a sectional view of the curling barrel shown;

[0048] Figure 16 a structural schematic view of the curling barrel when the center rod is in the second position;

[0049] Figure 17 for Figure 16 a sectional view of the curling barrel shown.

[0050] Figures 1 to 17 The reference signs in the drawings are as follows:

[0051] 100 is a body part, 101 is a large body sheath, 102 is a head cover, 103 is an upper large body, 104 is a lower large body, 105 is a first PCB board, 106 is a function control button, 107 is a tail turning assembly, 201 is an aluminum plate upper cover, 202 is an aluminum plate lower cover, 203 is a corner, 204 is a magnet, 205 is a second PCB board, 206 is an inner barrel, and 207 is a motor;

[0052] 1 is an arc-shaped curling plate, 11 is a first protruding part, 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 bone position, 221 is a first top tooth, 23 is a first meshing tooth, 24 is a second limiting groove, 241 is a third groove section, 242 is a fourth groove section, 243 is a second transition groove section, 25 is a third limiting groove, 3 is a self-locking mechanism, 31 is a guide column, 311 is a through hole, 312 is a third protruding part, 3121 is a first step surface, 3122 is a second step surface, 3123 is a connecting surface, 313 is a gap, 314 is an end cover, 32 is a self-locking buckle, 321 is a protruding block, 3211 is an inclined surface, 322 is a second meshing tooth, 33 is an elastic piece, 34 is a first limiting screw, 35 is a second limiting screw, 4 is a side seam cover, 41 is a second protruding part, and 42 is a U-shaped groove. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0054] The core of the present application is to provide a curling device which can curl out different size curls, is convenient to operate, has high styling efficiency, and has good styling effect.

[0055] Please refer to Figures 1-17 , the drawings of the present application.

[0056] AsFigures 1 to 4 As shown, the curler comprises a body part 100 and a core part, wherein the core part is accommodated in the body part 100. The body part 100 comprises 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 assembly 107. The upper large body 103 is fixedly 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 cavities. 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 arranged in the mounting holes of the upper large body 103.

[0057] The core part comprises 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.

[0058] It should be noted that the specific structure of the above-mentioned parts of the body part 100 and the core part can refer to the prior art, which will not be described herein.

[0059] The curler provided by the present application comprises an arc-shaped curling plate 1, a center rod 2 and a self-locking mechanism 3. Specifically, the number of the arc-shaped curling plates 1 is at least two. 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. In addition, the self-locking mechanism 3 is used to lock the center rod 2 at least two positions, so that the curling barrel is kept at least two positions with different diameters.

[0060] That is, the present application utilizes two or more arc-shaped curling plates 1 to splice to form a curling cylinder, and the center rod 2 is pushed by an external force, so that the center rod 2 drives each arc-shaped curling plate 1 to move radially. It can be understood that, by reasonably designing the shape of the first limiting groove 21, the axial movement of the center rod 2 can be ensured to be transmitted to the radial movement of the arc-shaped curling plate 1, so that the axial movement of the center rod 2 can be 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, 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 curling cylinders with different diameters; when the curling cylinder has a suitable diameter, the position of the center rod 2 is locked by the self-locking mechanism 3, and then the arc-shaped curling plate 1 can be kept at a certain radial position, so that the curling cylinder can be kept at a position with a required diameter for operation.

[0061] Therefore, the curling cylinder of the curling device provided by the present application is a variable-diameter curling cylinder, the switching between curling cylinders with different diameters can be realized by applying an external force to the center rod 2, the curling cylinder can be kept in a certain diameter state by using the self-locking mechanism 3, the operation is simple and convenient, the curling demand of different sizes can be met, the curling operation is facilitated, and the styling efficiency and styling effect are improved.

[0062] It should be noted that the locking position of the center rod 2 is not limited, for example, the center rod 2 can be locked at two different positions, so that the arc-shaped curling plate 1 has two different radial positions, and the curling cylinder has two different diameter states; of course, the center rod 2 can also be locked at three or more different positions, so that the arc-shaped curling plate 1 has three or more different radial positions, and the curling cylinder has three or more different diameter states.

[0063] As a preferred scheme, on the basis of the above embodiment, the center rod 2 can be locked at the first position and the second position, so that the curling cylinder has two different diameters. That is, when the center rod 2 is locked at the first position, the curling cylinder has a first diameter, and when the center rod 2 is locked at the second position, the curling cylinder has a second diameter, wherein the first diameter is greater than the second diameter.

[0064] It should be noted that the specific structure of the locking mechanism is not limited in this embodiment, for example, the locking mechanism can be a fastener, the fastener is connected with the body part 100 of the curling device, and the fastener can tightly press the center rod 2. In this way, when it is necessary to adjust the diameter of the curling cylinder, the fastener is loosened, the center rod 2 is moved to a suitable position by an external force, and then the fastener is locked.

[0065] Considering the convenience of operation, as a preferred scheme, as shown in Figures 5-7As shown, on the basis of the above embodiment, the self-locking mechanism 3 comprises a guide column 31, a self-locking buckle 32 and an elastic member 33. The guide column 31 is connected with the body part 100 of the curler, the central part of the guide column 31 is provided with a through hole 311, the central rod 2 is inserted into the through hole 311, the inner wall of the through hole 311 is provided with a first limiting part and a second limiting part; the self-locking buckle 32 is arranged in the through hole 311, one of the self-locking buckle 32 and the central rod 2 is provided with a first pushing part, and the other is provided with a second pushing part for cooperating with the first pushing part to push, so that the self-locking buckle 32 moves and rotates when the central rod 2 moves; the elastic member 33 is arranged at one end of the self-locking buckle 32 away from the central rod 2, for limiting the self-locking buckle 32 with the first limiting part or the second limiting part when the external force applied to the central rod 2 is removed; when the self-locking buckle 32 is limited with the first limiting part, the central rod 2 is located at the first position; when the self-locking buckle 32 is limited with the second limiting part, the central rod 2 is located at the second position.

[0066] That is, when the central rod 2 moves axially under the action of external force, the central rod 2 will push the self-locking buckle 32 to move and rotate through the pushing action between the first pushing part and the second pushing part, and then the self-locking buckle 32 switches to align with the first limiting part or the second limiting part. In this process, the self-locking buckle 32 compresses the elastic member 33, so that the elastic member 33 is elastically deformed and has elastic restoring force. When the external force applied to the central rod 2 is removed, the self-locking buckle 32 is driven to limit with the first limiting part or the second limiting part under the action of the elastic restoring force of the elastic member 33, so as to realize the locking of the position of the central rod 2.

[0067] That is, in this embodiment, when it is necessary to change the diameter of the curling barrel, only the external force needs to be applied to the central rod 2 to move it, and after the external force applied to the central rod 2 is removed, the locking of the position of the central rod 2 can be realized, so that the curling barrel remains in a certain diameter state.

[0068] It should be noted that the specific structure of the elastic member 33 is not limited in this embodiment, and preferably, the elastic member 33 is a spring.

[0069] Further, the specific installation mode of the elastic member 33 is not limited in this embodiment, and preferably, the end cover 314 is arranged at one end of the guide column 31 away from the central rod 2, one end of the elastic member 33 is connected with the end cover 314, and the other end is connected with the self-locking buckle 32.

[0070] It should be noted that the specific structure of the first limiting part and the second limiting part is not limited in this embodiment, as long as it can limit the self-locking buckle 32. For example, the first limiting part and the second limiting part can be respectively a convex structure having different axial positions along the axial direction of the guide column 31, so that when the self-locking buckle 32 abuts against the convex structure having different axial positions, the central rod 2 is limited at different positions.

[0071] Considering the stability and reliability of the self-locking buckle 32 and the first limiting portion, as a preferred solution, Figure 7 As shown, based on the above embodiment, the inner wall of the through hole 311 is provided with a radially inwardly convex third protrusion 312. The side of the third protrusion 312 away from the center rod 2 is provided with two stepped surfaces. Each stepped surface has a predetermined slope, and the slope direction of the two stepped surfaces is the same. The connecting surface 3123 between the two stepped surfaces forms a first stop. For ease of description, the two stepped surfaces are referred to as the first stepped surface 3121 and the second stepped surface 3122, respectively. The height of the first stepped surface 3121 is lower than that of the second stepped surface 3122.

[0072] That is to say, in this embodiment, the transition connection position of the two step surfaces is used as the first limiting portion. When the elastic member 33 drives the self-locking buckle 32 to rebound, the self-locking buckle 32 slides along the first step surface 3121 to the connecting surface 3123 of the two step surfaces, and is in close contact with the connecting surface 3123, cooperating with the elastic member 33 to lock the self-locking buckle 32, thereby achieving the locking of the center rod 2 in the first position.

[0073] It should be noted that the center rod 2 can only move under the action of an external force. That is, when the center rod 2 is not subjected to an external force, it is maintained in a stationary state by the action of static friction. Therefore, when an external force acts on the center rod 2, the center rod 2 can be moved, pushing the self-locking buckle 32 to move and rotate at the same time. When the external force on the center rod 2 is removed, the elastic force of the elastic member 33 pushes the self-locking buckle 32 to cause the center rod 2 to rebound. When the self-locking buckle 32 stops by cooperating with the first or second limiting portion, the center rod 2 also stays in the corresponding first or second position, achieving the purpose of locking the position of the center rod 2.

[0074] It can be understood that the step surface has a preset slope. In this way, under the elastic restoring force of the elastic member 33, the self-locking buckle 32 can move and rotate and rebound at the same time, which is conducive to the self-locking buckle 32 staying at the connecting surface 3123 of the two step surfaces. Compared with simply making the self-locking buckle 32 offset against the protruding structure, this embodiment can make the self-locking buckle 32 and the first limiting portion cooperate more stably and firmly, thereby improving the stability and reliability of the locking of the center rod 2.

[0075] Furthermore, considering the simplicity of the second limiting portion structure and for ease of processing, based on the above embodiment, the number of third protrusions 312 is at least two, and there is a gap 313 between any two adjacent third protrusions 312, and the gap 313 forms the second limiting portion.

[0076] It is understood that when the center rod 2 needs to be switched from the first position to the second position, it is only necessary to apply external force to the center rod 2 again, so that the center rod 2, through the pushing action between the first pushing portion and the second pushing portion, drives the self-locking buckle 32 to compress the elastic member 33 and cross the connecting surface 3123 of the two stepped surfaces. At this time, after the external force applied to the center rod 2 is removed, the self-locking buckle 32 is driven by the elastic member 33 to slide along the second stepped surface 3122 into the gap 313, thereby releasing the elastic force of the elastic member 33. It is understood that when the elastic force of the elastic member 33 is completely released, the self-locking buckle 32 stops moving. At this time, the center rod 2 also stays at the corresponding second position, thereby achieving the purpose of locking the position of the center rod 2.

[0077] Of course, in this case, a limiting structure for limiting the center rod 2 can also be provided on the fuselage 100, so that when the self-locking buckle 32 slides into the gap 313 between two adjacent third protrusions 312, the limiting structure is used to limit the center rod 2, so that the center rod 2 is locked in the second position.

[0078] It should be noted that when the center rod 2 needs to be switched from the second position to the first position, when an external force acts on the center rod 2 so that the center rod 2 pushes the self-locking buckle 32 to compress the elastic part 33, the self-locking buckle 32 needs to axially pass the highest point of the first step surface 3121, and when the self-locking buckle 32 disengages from the gap 313, the self-locking buckle 32 needs to be able to rotate until it just rests on the highest point of the first step surface 3121; in this way, when the center rod 2 is released, the self-locking buckle 32 can slide along the slope of the first step surface 3121 to the connecting surface 3123 of the two step surfaces under the action of the elastic part 33.

[0079] In order to ensure the correctness of the moving direction of the center rod 2 and the smoothness of its movement, Figure 11 As shown, based on the above embodiment, the outer periphery of the center rod 2 near the self-locking buckle 32 is provided with a bone position 22 corresponding to the gap 313, and the bone position 22 is inserted into the gap 313. In other words, when the center rod 2 moves, its bone position 22 moves within the gap 313, so that the gap 313 can be used to limit and guide the bone position 22, which helps to ensure the smooth movement of the center rod 2 and the correct movement direction.

[0080] In order to prevent the bone position 22 from sliding out of the gap 313 , as a preferred solution, based on the above embodiment, the length of the bone position 22 is greater than the length of the gap 313 .

[0081] Furthermore, the above embodiments do not limit the specific structures of the first pushing portion and the second pushing portion. As a preferred solution, Figures 8-10As shown, on the basis of the above embodiment, the first pushing part comprises a first top tooth 221 and a first engaging tooth 23, the first top tooth 221 is arranged at one end of the bone site 22 towards the self-locking buckle 32, and the first engaging tooth 23 is arranged at the end of the center rod 2; the second pushing part comprises a protrusion 321 arranged at the outer circumferential part of the self-locking buckle 32 and a second engaging tooth 322, the protrusion 321 is provided with an inclined surface 3211 at one side towards the first top tooth 221, and the inclined surface 3211 is used for cooperating with the first top tooth 221 to push; the second engaging tooth 322 is arranged at the end of the self-locking buckle 32, and the second engaging tooth 322 is engaged with the first engaging tooth 23, and the two cooperate to push.

[0082] As can be understood, when the center rod 2 is in the second position, the protrusion 321 is located in the gap 313 between the two adjacent third protrusions 312, at this time, the inclined surface 3211 on the protrusion 321 abuts against the first top tooth 221 on the bone site 22, and at the same time, the first engaging tooth 23 and the second engaging tooth 322 are in a non-fully engaged state, as shown in FIG. 4B. Figure 9 As can be understood, when the center rod 2 is in the second position, the protrusion 321 is located in the gap 313 between the two adjacent third protrusions 312, at this time, the inclined surface 3211 on the protrusion 321 abuts against the first top tooth 221 on the bone site 22, and at the same time, the first engaging tooth 23 and the second engaging tooth 322 are in a non-fully engaged state, as shown in FIG. 4B. Figure 10 As can be understood, when the center rod 2 is in the second position, the protrusion 321 is located in the gap 313 between the two adjacent third protrusions 312, at this time, the inclined surface 3211 on the protrusion 321 abuts against the first top tooth 221 on the bone site 22, and at the same time, the first engaging tooth 23 and the second engaging tooth 322 are in a non-fully engaged state, as shown in FIG. 4B.

[0083] It should be noted that, in order to improve the stability of the locking of the convex block 321 at the connecting surface 3123 of the two-layered stepped surface, preferably, the slope of the inclined surface 3211 on the convex block 321 is the same as the slope of the first stepped surface 3121 and the second stepped surface 3122, so that when the convex block 321 moves to the connecting surface 3123 of the two-layered stepped surface, the inclined surface 3211 on the convex block 321 can be completely attached to the first stepped surface 3121, so as to ensure the stability of the locking of the convex block 321 at the connecting surface 3123 of the two-layered stepped surface.

[0084] In order to facilitate the definition of the stroke of the center rod 2, as shown in the above embodiments, the center rod 2 is provided with a third limiting portion corresponding to the position of the bone site 22, and the guide column 31 is provided with a first limiting screw 34 which extends into the space between the third limiting portion and the bone site 22. Figure 5

[0085] That is to say, the first limiting screw 34 is installed on the guide column 31, and the first limiting screw 34 extends into the space between the third limiting portion and the bone site 22, and the first limiting screw 34 is used to limit the stroke of the center rod 2, and the first limiting screw 34 is clamped between the third limiting portion and the bone site 22, which on the one hand limits the stroke of the center rod 2, and on the other hand prevents the center rod 2 from being separated from the guide column 31.

[0086] Preferably, the third limiting portion is a third limiting groove 25 (as shown in the above embodiments). Figure 11

[0087] In addition, in the above embodiments, in order to avoid the radial movement of the self-locking buckle 32 during the movement and rotation, which causes the radial misalignment of the first top tooth 221 and the inclined surface 3211 and / or the first meshing tooth 23 and the second meshing tooth 322, as shown in the above embodiments, a second limiting screw 35 for radially limiting the self-locking buckle 32 is further included, which is sequentially threaded through the self-locking buckle 32 and the guide column 31 and then fixedly connected with the center rod 2. Figure 5

[0088] That is to say, after the second limiting screw 35 is fixed with the center rod 2, the head of the second limiting screw 35 is located in the self-locking buckle 32, which is used to limit the radial degree of freedom of the self-locking buckle 32, so as to avoid the radial movement of the self-locking buckle 32.

[0089] Considering the convenience of processing, preferably, the end of the center rod 2 towards the self-locking buckle 32 is in a cylindrical structure. In addition, considering the convenience of limiting the arc-shaped hair curling plate 1, preferably, the shape of the cross section of the center rod 2 is rectangular.

[0090] ​​​It can be understood that in the above various embodiments, when the various arc-shaped curling boards 1 are close to each other, so that the side portions of any two adjacent arc-shaped curling boards 1 are close to each other, the curling barrel with the smallest diameter is formed; at this time, the curling barrel is circumferentially closed and has no gap. When the various arc-shaped curling boards 1 are away from each other, the curling barrel with a larger diameter is formed, and a gap will be generated between the two adjacent arc-shaped curling boards 1, that is, at this time, the curling barrel is a curling barrel with a circumferential gap.

[0091] In order to avoid dust, impurities and the like from entering the curling barrel from the gap between the two adjacent arc-shaped curling boards 1, as shown in Figure 2 and 4 on the basis of the above embodiments, a side gap cover 4 is further included, the number of the side gap cover 4 is the same as that of the arc-shaped curling boards 1, one of the side gap cover 4 and the central rod 2 is provided with a second limiting groove 24, and the other is provided with a second protruding portion 41 which is in sliding cooperation with the second limiting groove 24. When the central rod 2 moves, the second protruding portion 41 cooperates with different positions of the second limiting groove 24, so that the side gap cover 4 is close to or away from the central axis of the curling barrel, so as to make the side gap cover 4 give way or fill the gap between the two adjacent arc-shaped curling boards 1.

[0092] That is, in the present embodiment, the axial movement of the central rod 2 is converted into the radial movement of the side gap cover 4 by the sliding of the second protruding portion 41 relative to the second limiting groove 24, so that when the arc-shaped curling boards 1 are away from each other to form a curling barrel with a larger diameter, the side gap cover 4 can be moved to the gap between the two adjacent arc-shaped curling boards 1 to fill the gap, so as to avoid dust, impurities and the like from entering the curling barrel from the gap. It can be understood that when the arc-shaped curling boards 1 are close to each other to form a curling barrel with the smallest diameter, the side gap cover 4 needs to be moved to a position away from the gap between the arc-shaped curling boards 1, so that the two adjacent arc-shaped curling boards 1 can be close to each other.

[0093] It should be noted that the specific shape of the first limiting groove 21 in the above various embodiments is not limited, as long as the first protruding portion 11 can slide along the first limiting groove 21 to make the arc-shaped curling board 1 move radially. As a preferred scheme, as shown in Figure 11 on the basis of the above embodiments, the first limiting groove 21 includes 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. It should be noted that the first central surface of the central rod 2 refers to a central surface passing through the center line of the central rod 2, as shown in Figure 6 the first central surface refers to the median plane perpendicular to the height direction of the central rod 2.

[0094] It can be understood that the closer the groove sections of the first limiting groove 21 are to the first center surface of the center rod 2, the closer the arc-shaped curling board 1 is to the center axis. When the center rod 2 is located at the second position, the first protruding part 11 is located at the first groove section 211, so that the arc-shaped curling board 1 is closest to the center axis, that is, at this time, all the arc-shaped curling boards 1 form a curling barrel with a second diameter; when the center rod 2 is located at the first position, the first protruding part 11 is located at the second groove section 212, so that the arc-shaped curling board 1 is farthest away from the center axis, that is, at this time, all the arc-shaped curling boards 1 form a curling barrel with a first diameter; when the first protruding part 11 is located at the first transition groove section 213 between the first groove section 211 and the second groove section 212, all the arc-shaped curling boards 1 are in a switching state from the second diameter to the first diameter or in a switching state from the first diameter to the second diameter.

[0095] It should be noted that, in order to enable the first protruding part 11 to smoothly move from the first groove section 211 to the second groove section 212 or vice versa, preferably, the first transition groove section 213 is an inclined groove section having a certain angle with the first groove section 211 and the second groove section 212 respectively.

[0096] In addition, the specific shape of the second limiting groove 24 is not limited in the embodiment, as long as the second protruding part 41 can enable the side seam cover 4 to move radially when the second protruding part 41 slides along the second limiting groove 24. As a preferred scheme, as shown in Figure 11 On the basis of the above embodiment, the second limiting groove 24 comprises a third groove section 241, a fourth groove section 242 and a second transition groove section 243 connected between the third groove section 241 and the fourth groove section 242, the third groove section 241 and the fourth groove section 242 are both parallel to the center axis, and the third groove section 241 is closer to the second center surface of the center rod 2 than the fourth groove section 242. It should be noted that the second 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 second center surface refers to a middle plane perpendicular to the width direction of the center rod 2.

[0097] It can be understood that the closer the groove sections of the second limiting groove 22 are to the second center surface of the center rod 2, the closer the side seam cover 3 is to the center axis. When the second protruding part 41 is located at the third groove section 241, the side seam cover 4 is closest to the center axis, that is, at this time, the side seam cover 4 gives way to the gap between the adjacent two arc-shaped curling boards 1; when the second protruding part 41 is located at the fourth groove section 242, the side seam cover 4 is farthest away from the center axis, that is, at this time, the side seam cover 4 fills up the maximum gap between the adjacent two arc-shaped curling boards 1; when the second protruding part 41 is located at the second transition groove section 243 between the third groove section 241 and the fourth groove section 242, the side seam cover 4 is in a transition stage from filling up the gap to giving way to the gap or in a transition stage from giving way to the gap to filling up the gap.

[0098] It should be noted that in order to enable the second protrusion 41 to move smoothly from the third slot section 241 to the fourth slot section 242, or vice versa, preferably, the second transition slot section 243 is an inclined slot section having a certain angle with the third slot section 241 and the fourth slot section 242 respectively.

[0099] Furthermore, in order to avoid mutual interference between the arc-shaped curling plate 1 and the side seam cover 4 during movement, based on the above embodiment, when the first protrusion 11 slides along the first transition groove section 213, the second protrusion 41 slides along the third groove section 241; when the first protrusion 11 slides along the second groove section 212, the second protrusion 41 slides along the second transition groove section 243.

[0100] It can be understood that when the first protrusion 11 slides along the first transition groove section 213, the arc-shaped curling plate 1 moves radially. When the second protrusion 41 slides along the third groove section 241, since the third groove section 241 is parallel to the central axis, the distance between the side seam cover 4 and the central axis remains unchanged, that is, the side seam cover 4 remains stationary. When the first protrusion 11 slides along the second groove section 212, since the second groove section 212 is parallel to the central axis, the distance between the arc-shaped curling plate 1 and the central axis remains unchanged, that is, the arc-shaped curling plate 1 remains stationary. When the second protrusion 41 slides along the second transition groove section 243, the side seam cover 4 moves radially.

[0101] That is to say, the arc-shaped curling plate 1 and the side seam cover 4 do not move synchronously, but move one in front and the other behind. By making the two always maintain a one-after-the-other movement relationship, mutual interference between the two during movement is avoided, thereby ensuring the reliability of movement.

[0102] For example, Figure 11 As shown, when the first protrusion 11 slides from the first groove section 211 into the first transition groove section 213 and then slides 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, and the curling barrel changes from the second diameter to the first diameter. During this process, the second protrusion 41 slides along the third groove section 241, while the position of the side seam cover 4 remains unchanged. As the first protrusion 11 continues to slide along the second groove section 212, the second protrusion 41 slides from the third groove section 241 into the second transition groove section 243 and then slides along the second transition groove section 243 to the fourth groove section 242. At this point, the arcuate curling plate 1 remains stationary, while the side seam cover 4 moves radially to the gap between two adjacent arcuate curling plates 1 to fill the gap.

[0103] That is, when the curling roller with a small diameter (second diameter) is changed to the curling roller with a large diameter (first diameter), the arc-shaped curling plate 1 moves first to form the curling roller with a large diameter, and then the side gap cover 4 moves to fill the gap between the two adjacent arc-shaped curling plates 1.

[0104] Conversely, when the first protruding part 11 slides along the second groove section 212 in the opposite direction, the second protruding part 41 slides from the fourth groove section 242 into the second transition groove section 243 and along the second transition groove section 243 to the third groove section 241, at this time, the arc-shaped hair curling plate 1 remains stationary, and the side seam cover 4 moves radially towards the center axis to open the gap between the adjacent two arc-shaped hair curling plates 1; when the first protruding part 11 slides from the second groove section 212 into the first transition groove section 213 and along the first transition groove section 213 to the first groove section 211, the second protruding part 41 continues to move along the third groove section 241, at this time, the arc-shaped hair curling plate 1 moves radially towards the center axis, and all the arc-shaped hair curling plates 1 move towards each other to change the hair curling cylinder from the first diameter to the second diameter, while the side seam cover 4 remains stationary.

[0105] That is, when changing the hair curling cylinder from the large diameter (the first diameter) to the small diameter (the second diameter), the side seam cover 4 moves first to open the gap between the adjacent two arc-shaped hair curling plates 1, and then the arc-shaped hair curling plate 1 moves to form the small diameter hair curling cylinder.

[0106] It should be noted that the number of the arc-shaped hair curling plates 1 is not limited in the present application, and the number of the arc-shaped hair curling plates 1 can be two or more than three. Considering the simplicity of the structure, preferably, the number of the arc-shaped hair curling plates 1 is two, and the two arc-shaped hair curling plates 1 are symmetrically arranged about the center rod 2.

[0107] Correspondingly, the number of the side seam cover 4 is two, and the two side seam covers 4 are symmetrically arranged about the center rod 2.

[0108] 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 hair curling plate 1; of course, it can also be the opposite, that is, the first limiting groove 21 is arranged on the arc-shaped hair curling plate 1, and the first protruding part 11 is arranged on the center rod 2.

[0109] Further, the number of the first limiting groove 21 and the first protruding part 11 between the single arc-shaped hair curling plate 1 and the center rod 2 in the present embodiment is not limited, for example, preferably, each arc-shaped hair curling plate 1 is provided with at least two first protruding parts 11, and correspondingly, the number of the first limiting groove 21 corresponding to the single arc-shaped hair curling plate 1 on the center rod 2 is at least two.

[0110] Taking into account the specific shape of the first limiting groove 21, as a preferred solution, on the basis of the above embodiment, two first limiting grooves 21 are respectively provided on both sides of the two ends of the center rod 2, and the two first limiting grooves 21 at the same end and on the same side form a Y-shaped groove symmetrical about the central plane of the center rod 2; two first protrusions 11 are respectively provided at both ends of the two arc-shaped curling plates 1, and the two first protrusions 11 at the same end of the arc-shaped curling plate 1 are respectively slidably fitted with the two first limiting grooves 21 corresponding to the same end and different sides of the center rod 2. It can be understood that because the two first limiting grooves 21 located at the same end and side of the center rod 2 form a Y-shaped groove that is symmetrical about the central plane of the center rod 2, that is, the two first groove sections 211 of the two first limiting grooves 21 at the same end and side are combined into one, facilitating processing. Furthermore, when the two first protrusions 11 of the two curved curling plates 1 slide along the two first limiting grooves 21 forming the Y-shaped groove, the movement of the two curved curling plates 1 is ensured to be consistent, that is, the two curved curling plates 1 move synchronously in opposite directions. Furthermore, by having the first protrusions 11 at both ends of the curved curling plates 1 move along the first limiting grooves 21 at both ends of the center rod 2, the smooth and reliable movement of the curved curling plates 1 is ensured.

[0111] Considering the specific arrangement of the second limiting grooves 24, as a preferred solution, based on the above embodiment, two sets of limiting grooves are respectively provided on the top and bottom surfaces of the center rod 2, symmetrically about its centerline. Each set of limiting grooves includes two second limiting grooves 24 spaced apart along the axial direction of the center rod 2. The two side seam covers 4 are respectively provided with two pairs of second protrusions 41, with the same pair of second protrusions 41 slidingly engaging with the two corresponding second limiting grooves 24 on the top and bottom surfaces of the center rod 2. In other words, in this embodiment, the single side seam cover 4 ensures the stability and reliability of the movement of the side seam cover 4 by virtue of the two pairs of second protrusions 41 slidingly engaging with the corresponding second limiting grooves 24 on the top and bottom surfaces of the center rod 2.

[0112] Furthermore, in order to improve the stability of the movement of the side seam cover 4, as Figure 13 As shown, based on the above embodiment, the side seam cover 4 is provided with a U-shaped groove 42, which is slidably engaged with the side of the center rod 2, and the second protrusion 41 is provided on the inner side of two parallel groove walls of the U-shaped groove 42. In other words, the width of the U-shaped groove 42 is greater than or equal to the thickness of the center rod 2. When the second protrusion 41 slides relative to the second limiting groove 24, the two sides of the center rod 2 slide within the U-shaped grooves 42 of the two side seam covers 4, respectively, preventing the side seam cover 4 from separating from the center rod 2 and ensuring the stability of the movement of the side seam cover 4.

[0113] like Figure 13As shown, preferably, the side seam cover 4 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 42.

[0114] It should be noted that in the above various embodiments, the manner 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 power mechanism capable of outputting linear motion such as a linear motor can be provided to automatically move the center rod 2.

[0115] It should also be noted that in this 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.

[0116] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between various embodiments can be referred to each other.

[0117] The curling device provided by the present application is described in detail above. The principles and implementation modes of the present application are described by applying specific examples in this paper, and the above embodiment description 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 in the art, without departing from the principles of the present application, the present application can be improved and modified in several ways, 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 plates (1), all of which are coaxially arranged to enclose a curling barrel; a central rod (2) inserted into the curling barrel and axially movable under external force; one of the arc-shaped curling plates (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) 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) to make the arc-shaped curling plates (1) approach or move away from the central axis, so that the curling barrel has different diameters; a self-locking mechanism (3) for locking the central rod (2) in at least two positions to keep the curling barrel at at least two positions with different diameters; 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 central rod (2) can be locked in a first position and a second position to make the curling barrel have two different diameters; the self-locking mechanism (3) comprises: a guide column (31) connected to a body part (100) of the curling iron, the central part of which is provided with a through hole (311), the central rod (2) is inserted into the through hole (311), and the inner wall of the through hole (311) is provided with a first limiting part and a second limiting part; a self-locking buckle (32) provided in the through hole (311), one of the self-locking buckle (32) and the central rod (2) is provided with a first pushing part, and the other is provided with a second pushing part for cooperating with the first pushing part to push, so that when the central rod (2) moves, the self-locking buckle (32) moves while rotating; a resilient member (33) provided at one end of the self-locking buckle (32) away from the central rod (2), for driving the self-locking buckle (32) to cooperate with the first limiting part or the second limiting part when the external force applied to the central rod (2) is removed; when the self-locking buckle (32) cooperates with the first limiting part, the central rod (2) is located in the first position; when the self-locking buckle (32) cooperates with the second limiting part, the central rod (2) is located in the second position.

2. The curling iron of claim 1, wherein, The inner wall of the through hole (311) is provided with a third protruding part (312) protruding radially inward, one side of the third protruding part (312) away from the central rod (2) is provided with two layers of stepped surfaces, each layer of the stepped surfaces has a preset slope, and the slope directions of the two layers of the stepped surfaces are the same, and the first limiting part is formed at the connecting surface (3123) between the two layers of the stepped surfaces.

3. The curling iron of claim 2, wherein, The number of the third protruding parts (312) is at least two, and any two adjacent third protruding parts (312) have a gap (313) therebetween, and the gap (313) forms the second limiting part.

4. The curling iron of claim 3, wherein, The outer periphery of one end of the center rod (2) near the self-locking buckle (32) is provided with a bone site (22) corresponding to the gap (313), and the bone site (22) is inserted into the gap (313).

5. The curling iron of claim 4, wherein, The first pushing part comprises: A first top tooth (221) provided on one end of the bone site (22) towards the self-locking buckle (32); A first meshing tooth (23) provided on the end of the center rod (2); The second pushing part comprises: A protrusion (321) provided on the outer periphery of the self-locking buckle (32), one end of the protrusion (321) towards the first top tooth (221) is provided with an inclined surface (3211) for cooperating with the first top tooth (221) to push; A second meshing tooth (322) provided on the end of the self-locking buckle (32), which cooperates with the first meshing tooth (23) to push.

6. The curling iron of claim 4, wherein, The length of the bone site (22) is greater than the length of the gap (313).

7. A hair curler according to any one of claims 4 to 6, wherein, The center rod (2) is provided with a third limiting part corresponding to the position of the bone site (22), the guide column (31) is provided with a first limiting screw (34), and the first limiting screw (34) extends into the third limiting part and the bone site (22).

8. A hair curler according to any one of claims 1 to 7, wherein Further comprising a second limiting screw (35) for radially limiting the self-locking buckle (32), which is sequentially threaded through the self-locking buckle (32) and the guide column (31) and fixedly connected with the center rod (2).

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