CN113615949A

CN113615949A - Hair curler

Info

Publication number: CN113615949A
Application number: CN202111026471.6A
Authority: CN
Inventors: 肖勇; 张三平; 魏绵嘉
Original assignee: Shenzhen Fenda Technology Co Ltd
Current assignee: Shenzhen Fenda Technology Co Ltd
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2021-11-09

Abstract

The invention discloses a hair curler, comprising: at least two arc-shaped hair curling plates, wherein all the arc-shaped hair curling plates are coaxially arranged to enclose a hair curling drum; the central rod is inserted in the hair roller and can axially move under the action of external force; one of the arc-shaped hair curling plate and the central rod is provided with a first limiting groove, the other one of the arc-shaped hair curling plate and the central rod is provided with a first convex part matched with the first limiting groove in a sliding way, and when the central rod moves, the first convex part is matched with different positions of the first limiting groove to enable the arc-shaped hair curling plate to be close to or far away from the central shaft of the arc-shaped hair curling plate, so that the hair curling cylinders have different diameters; a self-locking mechanism for locking the central rod in at least two positions to retain the hair roller in at least two different diameter positions. The hair roller of the hair curler is a variable-diameter hair roller, external force is applied to the central rod, the hair roller can be switched between different diameters, the hair roller can be kept in a certain diameter state by the aid of the self-locking mechanism, operation is simple, and curling requirements of different sizes can be met.

Description

Hair curler

Technical Field

The invention relates to the technical field of hairdressing apparatuses, in particular to a hair curler.

Background

As a tool for curling and shaping hair, the hair curler is widely used in the beauty and hairdressing industry and daily life.

The hair curler comprises a hair roller, and when the hair curler is used, the hair bundle is wound on the hair roller, and the hair roller is electrified and heated, so that the heat of the hair roller is radiated outwards from the hair wound on the inner layer, and curly flowers are ironed to form a required hair style.

The diameter of the hair roller of the prior art hair curlers is generally fixed, for example, the diameter of the hair roller of the current commercial hair curlers includes 25mm, 32mm and 38mm, etc., and when the hair is curled, the hair curler with the hair roller with the proper diameter is selected according to the required curly flower size, that is, once the hair curler is selected, the diameter of the hair roller is determined, so that the curly flower size which is curled by the hair curler is also fixed.

However, in the actual use process, in order to meet the requirement of the hairstyle, the curler is often required to be capable of curling curls with different sizes, and under the condition, the requirement for the curls with different sizes can be met only by continuously switching different curlers. Obviously, the operation of curling hair is inconvenient, and the styling efficiency, the styling aesthetic feeling and the like are seriously restricted.

In summary, those skilled in the art need to solve the above-mentioned problems and provide a hair curler capable of curling curly hair with different sizes and shapes to facilitate the hair curling operation and to improve the styling efficiency and styling effect.

Disclosure of Invention

In view of the above, the present invention is directed to a hair curler, which can be used to roll curlings of different sizes, and has the advantages of convenient operation, high styling efficiency and good styling effect.

In order to achieve the above purpose, the invention provides the following technical scheme:

a hair curler, comprising:

at least two arc-shaped hair curling plates, wherein all the arc-shaped hair curling plates are coaxially arranged to enclose a hair curling drum;

the central rod is inserted in the hair roller and can axially move under the action of external force; one of the arc-shaped hair curling plate and the central rod is provided with a first limiting groove, the other one of the arc-shaped hair curling plate and the central rod is provided with a first convex part in sliding fit with the first limiting groove, and when the central rod moves, the first convex part is matched with different positions of the first limiting groove, so that the arc-shaped hair curling plate is close to or far away from the central shaft of the arc-shaped hair curling plate, and the hair curling cylinders have different diameters;

a self-locking mechanism for locking the center rod in at least two positions to retain the hair roller in at least two different diameter positions.

Preferably, the center rod is lockable in the first and second positions to provide the hair roller with two different sized diameters.

Preferably, the self-locking mechanism comprises:

the center part of the guide post 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;

the self-locking buckle is arranged in the through hole, one of the self-locking buckle and the central rod is provided with a first pushing part, and the other of the self-locking buckle and the central rod is provided with a second pushing part which is used for being matched with the first pushing part to push, so that when the central rod moves, the self-locking buckle moves while rotating;

the elastic piece is arranged at one end of the self-locking buckle far away from the central rod and used for driving the self-locking buckle to be matched with the first limiting part or the second limiting part for limiting when the external force applied to the central rod is removed; when the self-locking buckle is matched with the first limiting part for limiting, the central rod is positioned at the first position; when the self-locking buckle is matched with the second limiting part for limiting, the central rod is located at the second position.

Preferably, a radially inward-protruding third protruding portion is arranged on the inner wall of the through hole, two layers of step surfaces are arranged on one side, away from the central rod, of the third protruding portion, each layer of step surface has a preset gradient, the gradient directions of the two layers of step surfaces are the same, and the first limiting portion is formed at the connecting surface between the two layers of step surfaces.

Preferably, the number of the third protruding parts is at least two, and a gap is formed between any two adjacent third protruding parts, and the gap forms the second limiting part.

Preferably, the peripheral part of the center rod, which is close to one end of the self-locking buckle, is provided with bone positions corresponding to the gaps one to one, and the bone positions are inserted into the gaps.

Preferably, the first pushing part includes:

the first top tooth is arranged at one end of the bone position, which faces the self-locking buckle;

the first meshing tooth is arranged at the end part of the central rod;

the second pushing portion includes:

the convex block is arranged on the outer peripheral part of the self-locking buckle, and an inclined surface used for being matched with the first top tooth to push is arranged at one end, facing the first top tooth, of the convex block;

and the second meshing tooth is arranged at the end part of the self-locking buckle and matched with the first meshing tooth for pushing.

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

Preferably, the position of the central rod corresponding to the bone position is provided with a third limiting part, the guide post is provided with a first limiting screw, and the first limiting screw extends into the space between the third limiting part and the bone position.

Preferably, the self-locking buckle further comprises a second limiting screw for radially limiting the self-locking buckle, and the second limiting screw penetrates through the self-locking buckle and the guide post in sequence and is fixedly connected with the central rod.

The hair curler provided by the invention has the advantages that more than two arc-shaped hair curling plates are spliced to form the hair curler, the central rod is pushed by external force to drive each arc-shaped hair curling plate to do radial motion, and the shape of the first limiting groove is reasonably designed to ensure that the axial motion of the central rod is transferred to the motion transmission of the radial motion of the arc-shaped hair curling plates, so that the axial motion of the central rod can be converted into the radial motion of the arc-shaped hair curling plates by utilizing the sliding of the first convex part relative to the first limiting groove, so that the arc-shaped hair curling plates are close to or far away from each other, and all the arc-shaped hair curling plates form the hair curlers with different diameters; when the hair roller is of a proper diameter, the self-locking mechanism is used for locking the position of the central rod, so that the arc-shaped hair curling plates can be kept at a certain radial position, and the hair roller is kept at a position with a required diameter for operation.

Therefore, the hair curler provided by the invention has the advantages that the hair curlers are variable-diameter hair curlers, the switching between the hair curlers with different diameters can be realized by applying external force to the central rod, the hair curlers can be kept in a certain diameter state by utilizing the self-locking mechanism, the operation is simple and convenient, the curling requirements of different sizes can be met, the hair curling operation is convenient, and the shaping efficiency and the shaping effect are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural view of a curling iron according to an embodiment of the invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is an exploded view of the body portion of the curling iron of FIG. 1;

FIG. 4 is an exploded view of the core portion of the curling iron;

FIG. 5 is an exploded view of the center rod and self-locking mechanism of the core;

FIG. 6 is a schematic view of the assembled structure of FIG. 5;

FIG. 7 is a cross-sectional view of the guide post of FIG. 5;

FIG. 8 is a schematic structural view of the self-locking buckle of FIG. 5;

FIG. 9 is a schematic view of the central rod in a first position in engagement with the self-locking snap;

FIG. 10 is a schematic view of the central rod in a second position in engagement with the self-locking snap;

FIG. 11 is a schematic view of a center pole configuration;

FIG. 12 is a schematic structural view of the curved hair curling plate;

FIG. 13 is a schematic view of the construction of the side seam cover;

FIG. 14 is a schematic view of the hair roller configuration with the center pole in the first position;

FIG. 15 is a cross-sectional view of the hair roller of FIG. 14;

FIG. 16 is a schematic view of the hair roller configuration with the center pole in the second position;

fig. 17 is a cross-sectional view of the hair roller of fig. 16.

The reference numerals in fig. 1 to 17 are as follows:

100 is a fuselage part, 101 is a large 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 key, 107 is a tail turning component, 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 cylinder, and 207 is a motor;

1 is an arc-shaped hair curling plate, 11 is a first convex part, 2 is a central rod, 21 is a first limit 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 limit groove, 241 is a third groove section, 242 is a fourth groove section, 243 is a second transition groove section, 25 is a third limit groove, 3 is a self-locking mechanism, 31 is a guide column, 311 is a through hole, 312 is a third convex 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 convex block, 3211 is an inclined surface, 322 is a second meshing tooth, 33 is an elastic part, 34 is a first limit screw, 35 is a second limit screw, 4 is a side seam cover, 41 is a second convex part, and 42 is a U-shaped groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the invention is to provide a hair curler which can be used for curling curly flowers with different sizes, and has the advantages of convenient operation, high modeling efficiency and good modeling effect.

Please refer to fig. 1-17, which are drawings illustrating the present invention.

As shown in fig. 1 to 4, the present invention provides a curling iron including a body part 100 and a core part, the body part being accommodated in the body part 100. Wherein, fuselage portion 100 includes big body sheath 101, skull 102, go up big body 103, big body 104 down, first PCB board 105, a plurality of function control button 106 and tail-turning subassembly 107, go up big body 103 and big body 104 fastening connection down, go up and be equipped with the cavity in big body 103 and big body 104 down, first PCB board 105 is located in the cavity, it is equipped with a plurality of mounting holes to go up big body 103, a plurality of function control button 106 are connected with first PCB board 105, and a plurality of function control button 106 are located in a plurality of mounting holes of going up big body 103.

The movement part comprises an aluminum plate upper cover 201, an aluminum plate lower cover 202, a corner 203, a magnet 204, a second PCB 205, an inner cylinder 206 and a motor 207.

It should be noted that, for the specific structures of the fuselage portion 100 and the core portion, please refer to the prior art, which is not described herein again.

The invention is characterized in that the hair curler provided by the invention comprises an arc-shaped hair curling plate 1, a central rod 2 and a self-locking mechanism 3. Specifically, the number of the arc-shaped hair curling plates 1 is at least two, and all the arc-shaped hair curling plates 1 are coaxially arranged to form a hair curling barrel; the central rod 2 is inserted in the hair roller, and the central rod 2 can axially move under the action of external force; one of arc curling iron 1 and central rod 2 is equipped with first spacing groove 21, and the other is equipped with first bellying 11, and first bellying 11 and first spacing groove 21 sliding fit, when central rod 2 received the exogenic action and axial displacement, the cooperation of first bellying 11 and the different positions of first spacing groove 21 made arc curling iron 1 be close to or keep away from its center pin to make the hair curler have different diameters. In addition, the self-locking mechanism 3 is used to lock the central rod 2 in at least two positions to keep the hair roller in at least two different diameter positions.

That is, the hair roller is formed by splicing more than two arc-shaped hair curling plates 1, the central rod 2 is pushed by external force, and the central rod 2 drives each arc-shaped hair curling plate 1 to do radial motion, so that the motion transmission from the axial motion of the central rod 2 to the radial motion of the arc-shaped hair curling plates 1 can be ensured by reasonably designing the shape of the first limiting groove 21, therefore, the axial motion of the central rod 2 can be converted into the radial motion of the arc-shaped hair curling plates 1 by utilizing the sliding of the first convex part 11 relative to the first limiting groove 21, so that the arc-shaped hair curling plates 1 are close to or far away from each other, and further, all the arc-shaped hair curling plates 1 form hair rollers with different diameters; when the hair roller has a proper diameter, the self-locking mechanism 3 is used for locking the position of the central rod 2, so that the arc-shaped hair curling plates 1 can be kept at a certain radial position, and the hair roller is kept at a position with a required diameter for operation.

Therefore, the hair curler provided by the invention has the advantages that the hair curlers are variable-diameter hair curlers, the switching between the hair curlers with different diameters can be realized by applying external force on the central rod 2, the hair curlers can be kept in a certain diameter state by utilizing the self-locking mechanism 3, the operation is simple and convenient, the curling requirements of different sizes can be met, the hair curling operation is convenient, and the modeling efficiency and the modeling effect are improved.

It should be noted that the locking position of the center rod 2 is not limited in the present invention, for example, the center rod 2 can be locked at two different positions, and accordingly, the curved hair curling plate 1 has two different radial positions, and the hair curling barrel has two different diameter states; of course, the central rod 2 can also be locked in more than three different positions, correspondingly, so that the curved hair curling plate 1 has more than three different radial positions, and so that the hair curling roller has more than three different diameter states.

Preferably, the central rod 2 is lockable in the first and second positions on the basis of the above-described embodiment, so that the hair roller has two diameters of different sizes. That is, the hair roller has a first diameter when the central rod 2 is locked in the first position, and the hair roller has a second diameter when the central rod 2 is locked in the second position, wherein the first diameter is larger than the second diameter.

It should be noted that the specific structure of the locking mechanism is not limited in this embodiment, for example, the locking mechanism may be a fastening member, the fastening member is connected to the body portion 100 of the curling iron, and the fastening member can be pressed against the center rod 2, so that when the diameter of the curling iron needs to be adjusted, the fastening member is released, and the center rod 2 is moved to a proper position by an external force, and then the fastening member is locked.

In view of convenience of operation, as a preferable solution, the self-locking mechanism 3 includes a guide post 31, a self-locking catch 32 and an elastic member 33 on the basis of the above-described embodiment, as shown in fig. 5 to 7. The guide post 31 is connected with the body part 100 of the hair curler, the center part of the guide post 31 is provided with a through hole 311, the center rod 2 is inserted in the through hole 311, and the inner wall of the through hole 311 is provided with a first limit part and a second limit 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 one of the self-locking buckle 32 and the central rod 2 is provided with a second pushing part which is used for matching with the first pushing part to push, so that when the central rod 2 moves, the self-locking buckle 32 moves and rotates simultaneously; the elastic piece 33 is arranged at one end of the self-locking buckle 32 far away from the central rod 2 and used for driving the self-locking buckle 32 to be matched with the first limiting part or the second limiting part for limiting when the external force applied to the central rod 2 is removed; when the self-locking buckle 32 is matched with the first limiting part for limiting, the central rod 2 is positioned at the first position; when the self-locking buckle 32 is matched with the second limiting part for limiting, the central rod 2 is positioned at the second position.

That is to say, when the central rod 2 axially moves under the action of external force, the central rod 2 is pushed by the pushing action between the first pushing portion and the second pushing portion to move and rotate the self-locking buckle 32, so that the self-locking buckle 32 is switched to align with the first limiting portion or the second limiting portion, and in the process, the self-locking buckle 32 compresses the elastic member 33, so that the elastic member 33 elastically deforms, and has elastic restoring force. When removing the external force that applys to well core rod 2, under the elastic restoring force effect of elastic component 33, it is spacing with the spacing cooperation of first spacing portion or second to order about auto-lock buckle 32, realizes the locking to well core rod 2 position.

That is, in this embodiment, when the diameter of the hair roller needs to be changed, only external force needs to be applied to the central rod 2 to move the hair roller, 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 hair roller is kept in a certain diameter state.

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

Further, the embodiment does not limit the specific installation manner of the elastic element 33, and preferably, an end cap 314 is disposed at an end of the guide post 31 away from the central rod 2, one end of the elastic element 33 is connected to the end cap 314, and the other end is connected to the self-locking buckle 32.

It should be noted that, the specific structures of the first limiting portion and the second limiting portion are not limited in this embodiment, as long as the self-locking buckle 32 can be limited. For example, the first and second position-limiting portions may be respectively protruding structures having different axial positions along the axial direction of the guide post 31, so that the central rod 2 is limited at different positions when the self-locking buckle 32 abuts against the protruding structures at different axial positions.

In consideration of the stability and reliability of the self-locking buckle 32 and the first limiting portion in matching limiting, as a preferable scheme, as shown in fig. 7, on the basis of the above embodiment, the inner wall of the through hole 311 is provided with a third protruding portion 312 which protrudes inward in the radial direction, one side of the third protruding portion 312 away from the central rod 2 is provided with two layers of step surfaces, each layer of step surface has a preset gradient, the gradient directions of the two layers of step surfaces are the same, and the first limiting portion is formed at the connecting surface 3123 between the two layers of step surfaces. For convenience of description, two levels of step surfaces are referred to as a first step surface 3121 and a second step surface 3122, respectively, and the height of the first step surface 3121 is lower than the height of the second step surface 3122.

That is to say, in the embodiment, the transitional connection position of the two layers of 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 to the connection surface 3123 of the two layers of step surfaces along the first step surface 3121, abuts against and contacts with the connection surface 3123, and cooperates with the elastic member 33 to lock the self-locking buckle 32, so as to realize the locking of the central rod 2 at the first position.

It should be noted that the central rod 2 can move only under the action of the external force, that is, when the central rod 2 is not under the action of the external force, it is under the action of the static friction force and remains in a static state. Therefore, when an external force acts on the central rod 2, the central rod 2 can move to push the self-locking buckle 32 to move and rotate at the same time; when removing the external force that applys to well core rod 2, under the elastic force effect of elastic component 33, promote auto-lock buckle 32 and drive well core rod 2 and kick-back, after auto-lock buckle 32 and the spacing cooperation of first spacing portion or second stopped, make well core rod 2 also stop on corresponding first position or second position, reach the purpose to well core rod 2 position locking.

It can be understood that the step face has the predetermined slope, like this, under the effect of the elastic restoring force of elastic component 33, can make 32 limit of auto-lock buckle remove the limit and rotate the resilience, be favorable to making auto-lock buckle 32 stop to the connection face 3123 department of two-layer step face, compare in simple messenger auto-lock buckle 32 and protruding structure counterbalance, this embodiment can make auto-lock buckle 32 and first spacing portion complex more stable and firm to can promote the stability and the reliability of well core rod 2 locking.

Further, in view of the simplicity of the structure of the second position-limiting portion, so as to facilitate the processing, on the basis of the above-mentioned embodiment, the number of the third protruding portions 312 is at least two, a gap 313 is provided between any two adjacent third protruding portions 312, and the gap 313 forms the second position-limiting portion.

It can be understood that, when the central rod 2 needs to be switched from the first position to the second position, only the external force needs to be applied to the central rod 2 again, so that the central rod 2 drives the self-locking buckle 32 to compress the elastic member 33 to cross the connecting surface 3123 of the two step surfaces through the pushing action between the first pushing portion and the second pushing portion, at this time, after the external force applied to the central rod 2 is removed, under the action of the elastic member 33, the self-locking buckle 32 is driven to slide into the gap 313 along the second step surface 3122, so as to release the elastic force of the elastic member 33. It can be understood that, after the elastic force of the elastic member 33 is completely released, the self-locking buckle 32 stops moving, and at this time, the central rod 2 also stays at the corresponding second position, so as to achieve the purpose of locking the position of the central rod 2.

In this case, of course, the body 100 may be provided with a limiting structure for limiting the central rod 2, so that when the self-locking buckle 32 slides into the gap 313 between two adjacent third protrusions 312, the central rod 2 is limited by the limiting structure, and the central rod 2 is locked at the second position.

It should be noted that, when the central rod 2 needs to be switched from the second position to the first position, an external force acts on the central rod 2, so that the central rod 2 pushes the self-locking buckle 32 to compress the elastic member 33, the self-locking buckle 32 needs to pass through the highest point of the first step surface 3121 along the axial direction, and when the self-locking buckle 32 is separated from the gap 313, the self-locking buckle 32 needs to be able to rotate to just overlap the highest point of the first step surface 3121; thus, when the center rod 2 is released, the self-locking catch 32 can slide along the slope of the first stepped surface 3121 to the connecting surface 3123 of the two stepped surfaces by the elastic member 33.

In order to ensure the correctness of the moving direction of the central rod 2 and the smoothness of the movement thereof, as shown in fig. 11, on the basis of the above embodiment, the outer periphery of the central rod 2 near one end of the self-locking buckle 32 is provided with bone positions 22 corresponding to the gaps 313 one by one, and the bone positions 22 are inserted into the gaps 313. That is, when the central rod 2 moves, the bone position 22 moves in the gap 313, so that the bone position 22 is limited and guided by the gap 313, which is beneficial to ensuring the smoothness of the movement of the central rod 2 and the correctness of the movement direction thereof.

To prevent the bone site 22 from slipping out of the gap 313, the length of the bone site 22 is preferably greater than the length of the gap 313, based on the above-described embodiment.

Further, the above embodiments do not limit the specific structure of the first pushing portion and the second pushing portion, as a preferable solution, as shown in fig. 8 to 10, on the basis of the above embodiments, the first pushing portion includes a first pushing tooth 221 and a first engaging tooth 23, the first pushing tooth 221 is disposed at one end of the bone position 22 facing the self-locking buckle 32, and the first engaging tooth 23 is disposed at an end of the central rod 2; the second pushing part comprises a convex block 321 and a second meshing tooth 322 which are arranged on the outer periphery of the self-locking buckle 32, one side of the convex block 321 facing the first top tooth 221 is provided with an inclined surface 3211, and the inclined surface 3211 is used for being matched with the first top tooth 221 to push; the second engaging tooth 322 is disposed 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 are pushed by matching.

It will be appreciated that when the central rod 2 is in the second position, the projection 321 is located in the gap 313 between two adjacent third protrusions 312, and at this time, the inclined surface 3211 on the projection 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-complete engaging state, as shown in fig. 9. When the center rod 2 is switched from the second position to the first position, the center rod 2 is moved by applying an external force to the center rod 2, so that the first top tooth 221 pushes the inclined surface 3211 on the protrusion 321 to move, when the inclined surface 3211 exposes the end of the gap 313, the self-locking buckle 32 rotates while continuing to move along with the continued movement of the center rod 2, so that the edge portion of the inclined surface 3211 catches the highest point of the first step surface 3121, and then the external force applied to the center rod 2 is removed, and the protrusion 321 moves to the connecting surface 3123 of the two step surfaces along the slope of the first step surface 3121 under the action of the elastic member 33, so as to lock the protrusion 321, that is, the center rod 2 is locked at the first position, at which time, preferably, the first engaging tooth 23 is completely engaged with the second engaging tooth 322, as shown in fig. 10. When the center rod 2 is switched from the first position to the second position, the external force is applied to the center rod 2 again to move the center rod 2, at this time, the first engaging tooth 23 pushes the second engaging tooth 322 to move until the bump 321 compresses the elastic member 33 and moves to a position beyond the highest point of the second step surface 3122, at this time, the external force applied to the center rod 2 is removed, under the action of the elastic member 33, the bump 321 moves into the gap 313 of the adjacent two third protruding portions 312 along the slope of the second step surface 3122, during this process, the second engaging tooth 322 pushes the first engaging tooth 23 to move, and after the bump 321 enters the gap 313, the inclined surface 3211 on the bump 321 pushes the first top tooth 221 to move, and the inclined surface 3211 and the second engaging tooth 322 cooperate to push the center rod 2 to rebound to the second position.

It should be noted that, in order to improve the stability of the locking of the bump 321 at the connection surface 3123 of the two-layer step surfaces, it is preferable that the slope of the inclined surface 3211 on the bump 321 is the same as the slope of the first step surface 3121 and the second step surface 3122, so that when the bump 321 moves to the connection surface 3123 of the two-layer step surfaces, the inclined surface 3211 on the bump 321 can be completely attached to the first step surface 3121, so as to ensure the stability of the locking of the bump 321 at the connection surface 3123 of the two-layer step surfaces.

In order to limit the stroke of the central rod 2, as shown in fig. 5, on the basis of the above embodiment, a third limiting portion is disposed at a position of the central rod 2 corresponding to the bone position 22, and the guide post 31 is disposed with a first limiting screw 34, wherein the first limiting screw 34 extends between the third limiting portion and the bone position 22.

That is, in the present embodiment, the first limit screw 34 is mounted on the guide post 31, and the first limit screw 34 is extended between the third limit portion and the bone position 22, the stroke of the central rod 2 is limited by the first limit screw 34, and the first limit screw 34 is clamped between the third limit portion and the bone position 22, so that the stroke of the central rod 2 is limited, and the central rod 2 is prevented from being disengaged from the guide post 31.

Preferably, the third position-limiting part is a third position-limiting groove 25 (as shown in fig. 11).

In addition, in each of the above embodiments, in order to avoid radial movement of the self-locking buckle 32 during the process of moving and rotating, which causes radial misalignment between the first top tooth 221 and the inclined surface 3211 and/or between the first engaging tooth 23 and the second engaging tooth 322, as shown in fig. 5, on the basis of the above embodiments, a second limiting screw 35 for radially limiting the self-locking buckle 32 is further included, and the second limiting screw is sequentially inserted through the self-locking buckle 32 and the guide post 31 and then fixedly connected to the central rod 2.

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

In view of the convenience of processing, it is preferable that the end of the center rod 2 facing the self-locking clip 32 is of a cylindrical structure. In addition, in consideration of convenience of the center rod 2 for restraining the arc curling plate 1, it is preferable that the cross-section of the center rod 2 has a rectangular shape.

It will be appreciated that in each of the above embodiments, when the curved hair curling plates 1 are brought together so that the side portions of any two adjacent curved hair curling plates 1 are brought into close contact, a hair roller with the smallest diameter is formed; the circumference of the hair roller is closed without gaps. When the arc-shaped hair curling plates 1 are far away from each other to form a hair roller with a larger diameter, a gap is formed between two adjacent arc-shaped hair curling plates 1, namely, the hair roller is a hair roller with a gap on the circumferential direction.

In order to prevent dust, impurities and the like from entering the hair roller from the gap between two adjacent arc-shaped hair curling plates 1, as shown in fig. 2 and 4, on the basis of the above embodiment, the hair roller further comprises side seam covers 4, the number of the side seam covers is the same as that of the arc-shaped hair curling plates 1, one of the side seam covers 4 and the central rod 2 is provided with a second limiting groove 24, the other one is provided with a second protruding part 41 in sliding fit with the second limiting groove 24, when the central rod 2 moves, the second protruding part 41 is matched with different positions of the second limiting groove 24, so that the side seam covers 4 are close to or far away from the central axis of the hair roller, and the side seam covers 4 are enabled to be abducted or fill the gap between two adjacent arc-shaped hair curling plates 1.

That is, in the present embodiment, the second protruding portion 41 slides relative to the second limiting groove 24, so as to convert the axial movement of the central rod 2 into the radial movement of the side seam cover 4, so that when the curved hair curling plates 1 are far away from each other to form a hair roller with a larger diameter, the side seam cover 4 can move to the gap between two adjacent curved hair curling plates 1 to make up the gap, and prevent dust, impurities, etc. from entering the hair roller from the gap. It will be appreciated that when the curved hair curling plates 1 are brought closer together to form a hair roller of minimum diameter, it is desirable to enable the side seam cover 4 to be moved to a position clear of the gaps of the curved hair curling plates 1 so that adjacent curved hair curling plates 1 can be moved closer together.

It should be noted that, the above embodiments do not limit the specific shape of the first limiting groove 21, as long as the first protruding portion 11 can move the arc-shaped hair curling plate 1 radially when sliding along the first limiting groove 21, as a preferable solution, as shown in fig. 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 plane of the central rod 2 than the second groove section 212. The first center plane of the center bar 2 is a center plane passing through the center line of the center bar 2, and as shown in fig. 6, the first center plane is a middle plane perpendicular to the height direction of the center bar 2.

It will be appreciated that the closer the respective groove sections of the first retaining groove 21 are to the first central surface of the central bar 2, the closer the curved hair curling plate 1 is to the central axis, and that when the central bar 2 is in the second position, the first raised portion 11 is located in the first groove section 211, such that the curved hair curling plate 1 is closest to the central axis, i.e. when all of the curved hair curling plates 1 form a hair roller of the second diameter; when the central rod 2 is in the first position, the first raised portion 11 is located in the second groove section 212 such that the curved hair curling plates 1 are furthest from the central axis, i.e. all of the curved hair curling plates 1 form a hair roller of the first diameter at this time; when the first projection 11 is located in the first transition groove section 213 between the first groove section 211 and the second groove section 212, all of the curved hair plates 1 are in the switching state from the second diameter to the first diameter or in the switching state from the first diameter to the second diameter.

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

In addition, the specific shape of the second limiting groove 24 is not limited in this embodiment, as long as the second protruding portion 41 can move the side seam cover 4 radially when sliding along the second limiting groove 24, as a preferable solution, as shown in fig. 11, on the basis of the above embodiment, the second limiting groove 24 includes 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 central axis, and the third groove section 241 is closer to the second central plane of the central rod 2 than the fourth groove section 242. The second center plane of the center rod 2 is a center plane passing through the center line of the center rod 2, and as shown in fig. 6, the second center plane is a midplane perpendicular to the width direction of the center rod 2.

It will be appreciated that the closer the slot segments of the second retaining slot 22 are to the second central plane of the central rod 2, the closer the side slot cover 3 is to the central axis, and when the second protruding portion 41 is located in the third slot segment 241, the side slot cover 4 is closest to the central axis, i.e. when the side slot cover 4 is displaced from the gap between two adjacent curved hair curling plates 1; when the second protruding portion 41 is located at the fourth slot segment 242, the side seam cover 4 is farthest away from the central axis, that is, the side seam cover 4 fills the largest gap between two adjacent curved hair curling plates 1; when the second protrusion 41 is located in 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 the transition stage from filling the gap to avoiding the gap or in the transition stage from avoiding the gap to filling the gap.

It should be noted that, in order to enable the second protruding portion 41 to move smoothly from the third slot segment 241 to the fourth slot segment 242, or vice versa, it is preferable that the second transition slot segment 243 is an inclined slot segment having an angle with the third slot segment 241 and the fourth slot segment 242, respectively.

Further, in order to avoid interference between the curved hair curling plate 1 and the side seam cover 4 during movement, on the basis of the above embodiment, when the first protruding part 11 slides along the first transition groove section 213, the second protruding part 41 slides along the third groove section 241; as the first boss 11 slides along the second slot segment 212, the second boss 41 slides along the second transition slot segment 243.

It will be appreciated that as the first projection 11 slides along the first transition groove section 213, the curved hair curling plate 1 is caused to move radially; when the second protrusion 41 slides along the third groove section 241, the distance of the side cover 4 from the central axis is constant because the third groove section 241 is parallel to the central axis, that is, the side cover 4 is kept still. When the first raised portion 11 slides along the second groove section 212, the distance of the curved hair curling plate 1 relative to the central axis is constant because the second groove section 212 is parallel to the central axis, i.e. the curved hair curling plate 1 is kept still; when the second protruding portion 41 slides along the second transition groove section 243, the side seam cover 4 is radially moved.

That is, the arc-shaped hair curling plate 1 and the side seam cover 4 do not move synchronously, the arc-shaped hair curling plate and the side seam cover move in tandem, and the arc-shaped hair curling plate and the side seam cover are always kept in a sequential movement relationship, so that the mutual interference of the arc-shaped hair curling plate and the side seam cover during movement is avoided, and the movement reliability is ensured.

For example, as shown in fig. 11, when the first projection 11 slides from the first groove segment 211 into the first transition groove segment 213 and along the first transition groove segment 213 into the second groove segment 212, the curved hair curling plate 1 moves radially away from the central axis, changing from the second diameter to the first diameter; during this process, the second projection 41 slides along the third groove section 241, and the position of the side seam cover 4 is maintained. As the first protruding part 11 continues to slide along the second slot segment 212, the second protruding part 41 slides from the third slot segment 241 into the second transition slot segment 243 and slides along the second transition slot segment 243 to the fourth slot segment 242, at which time, the curved hair curling plates 1 remain stationary and the side seam cover 4 moves radially to the seam between two adjacent curved hair curling plates 1 to fill the seam.

That is, when the hair roller is changed from the small diameter (second diameter) to the large diameter (first diameter), the curved hair plates 1 are moved to form the large diameter hair roller, and then the side seam cover 4 is moved to fill the gap between the adjacent curved hair plates 1.

Conversely, when the first protruding part 11 slides along the second slot segment 212 in the opposite direction, the second protruding part 41 slides from the fourth slot segment 242 into the second transition slot segment 243 and slides along the second transition slot segment 243 to the third slot segment 241, at this time, the curved hair curling plates 1 are kept still, and the side seam cover 4 moves radially in the direction close to the central axis to open the seam between two adjacent curved hair curling plates 1; when the first protruding part 11 slides from the second groove segment 212 into the first transition groove segment 213 and along the first transition groove segment 213 to the first groove segment 211, the second protruding part 41 moves further along the third groove segment 241, and the curved hair curling plates 1 move radially close to the central axis, and all the curved hair curling plates 1 move closer to each other, so that the hair roller changes from the first diameter to the second diameter, and the side seam cover 4 remains stationary.

That is, when changing from a large diameter (first diameter) to a small diameter (second diameter), the side seam cover 4 is moved to clear the gap between two adjacent curved hair plates 1; the curved hair curling plate 1 is then moved again to form a small diameter hair roller.

It should be noted that the specific number of the arc-shaped hair curling plates 1 is not limited in the present invention, and the number of the arc-shaped hair curling plates 1 may be two, or may be more than three. In view of the simplicity of construction, it is preferable that the number of the curved-curling plates 1 is two, and the two curved-curling plates 1 are symmetrically arranged about the central rod 2.

Correspondingly, the number of side slot covers 4 is two, the two side slot covers 4 being arranged symmetrically about the central bar 2.

In addition, the specific arrangement positions of the first limiting groove 21 and the first protruding part 11 are not limited, the first limiting groove 21 can be arranged on the central rod 2, and the first protruding part 11 is arranged on the arc-shaped hair curling plate 1; of course, the opposite is also possible, i.e. the first limiting groove 21 is provided in the curved hair curling plate 1 and the first protruding part 11 is provided in the central rod 2.

Further, the number of the first limiting grooves 21 and the first protruding portions 11 between the single curved hair curling plate 1 and the central rod 2 is not limited in this embodiment, for example, each curved hair curling plate 1 is preferably provided with at least two first protruding portions 11, and correspondingly, the number of the first limiting grooves 21 on the central rod 2 corresponding to the single curved hair curling plate 1 is at least two.

In consideration of the specific shape of the first limiting grooves 21, as a preferable solution, on the basis of the above embodiment, two first limiting grooves 21 are respectively disposed on two sides of two ends of the central rod 2, and the two first limiting grooves 21 on the same end and the same side form a Y-shaped groove symmetrical with respect to the central plane of the central rod 2; two ends of two arc curlers 1 are equipped with two first bellying 11 respectively, and two first bellying 11 of arc curlers 1 same end respectively with 2 same ends of well core rod and different side two corresponding first spacing grooves 21 sliding fit. It can be understood that, because the two first limiting grooves 21 located at the same end and the same side of the central rod 2 form a Y-shaped groove which is symmetrical about the central plane of the central rod 2, that is, the two first groove sections 211 of the two first limiting grooves 21 at the same end and the same side are combined into one, which is convenient for processing; on the other hand, when the two first protrusions 11 of the two curved hair curling plates 1 slide along the two first limiting grooves 21 forming the Y-shaped grooves, respectively, the motion amount of the two curved hair curling plates 1 is consistent, that is, the two curved hair curling plates 1 move synchronously in opposite directions. In addition, the first protrusions 11 at both ends of the curved curling plate 1 are moved along the first limiting grooves 21 at both ends of the central rod 2, respectively, so that the smoothness and reliability of the movement of the curved curling plate 1 can be ensured.

In consideration of the specific arrangement manner of the second limiting grooves 24, as a preferable scheme, on the basis of the above embodiment, the top surface and the bottom surface of the central rod 2 are respectively provided with two sets of limiting grooves which are symmetrical about the central line thereof, and each set of limiting grooves respectively includes two second limiting grooves 24 which are arranged at intervals along the axial direction of the central rod 2; two pairs of second protruding parts 41 are respectively arranged on the two side seam covers 4, and the same pair of second protruding parts 41 are respectively in sliding fit with the two second limiting grooves 24 corresponding to the top surface and the bottom surface of the central rod 2. That is, in the present embodiment, the single side seam cover 4 is slidably fitted along the corresponding second limiting grooves 24 on the top and bottom surfaces of the central rod 2 by the two pairs of second protrusions 41, so as to ensure the stability and reliability of the movement of the side seam cover 4.

Further, in order to improve the smoothness of the movement of the side sewing cap 4, as shown in fig. 13, on the basis of the above embodiment, the side sewing cap 4 is provided with the U-shaped groove 42, the U-shaped groove 42 is slidably engaged with the side portion of the central rod 2, and the second protrusion 41 is provided on the inner side of two parallel groove walls of the U-shaped groove 42. That is, the width of the U-shaped groove 42 is greater than or equal to the thickness of the central rod 2, and when the second protruding portion 41 slides relative to the second limiting groove 24, the two sides of the central rod 2 respectively slide in the U-shaped grooves 42 of the two side caps 4, so that the side caps 4 are prevented from being separated from the central rod 2, and the stability of the movement of the side caps 4 is ensured.

As shown in fig. 13, the side seam cover 4 preferably comprises a base plate, one side of the base plate is provided with a rib cover for filling the gap between two adjacent curved hair curling plates 1, 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.

In each of the above embodiments, the manner of applying the external force to the center rod 2 is not limited, for example, the center rod 2 may be manually pushed to move; the power mechanism can drive the central rod 2 to automatically move by arranging a power mechanism capable of outputting linear motion, such as a linear motor.

It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The curling iron provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A curling iron, comprising:

at least two arc-shaped hair curling plates (1), wherein all the arc-shaped hair curling plates (1) are coaxially arranged to enclose a hair curling barrel;

a central rod (2) inserted in the hair roller and axially movable under the action of an external force; one of the arc-shaped hair curling plate (1) and the central rod (2) is provided with a first limiting groove (21), the other one of the arc-shaped hair curling plate and the central rod is provided with a first protruding part (11) matched with the first limiting groove (21) in a sliding way, when the central rod (2) moves, the first protruding part (11) is matched with different positions of the first limiting groove (21), so that the arc-shaped hair curling plate (1) is close to or far away from the central shaft of the arc-shaped hair curling plate, and the hair curling cylinders have different diameters;

a self-locking mechanism (3) for locking the central rod (2) in at least two positions to retain the hair roller in at least two different diameter positions.

2. A curling iron according to claim 1, wherein said central rod (2) is lockable in a first position and a second position, so that said hair roller has two diameters of different sizes.

3. Hair curler according to claim 2, characterized in that said self-locking mechanism (3) comprises:

the guide post (31) is connected with the body part (100) of the hair curler, a through hole (311) is formed in the center part of the guide post, the center rod (2) is inserted into the through hole (311), and a first limiting part and a second limiting part are arranged on the inner wall of the through hole (311);

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 one of the self-locking buckle (32) and the central rod is provided with a second pushing part which is matched with the first pushing part for pushing, so that when the central rod (2) moves, the self-locking buckle (32) moves while rotating;

the elastic piece (33) is arranged at one end, far away from the central rod (2), of the self-locking buckle (32) and used for driving the self-locking buckle (32) to be matched with the first limiting part or the second limiting part for limiting when external force applied to the central rod (2) is removed; when the self-locking buckle (32) is matched with the first limiting part for limiting, the central rod (2) is located at the first position; when the self-locking buckle (32) is matched with the second limiting part for limiting, the central rod (2) is located at the second position.

4. A curling iron according to claim 3, wherein the inner wall of the through hole (311) is provided with a third protrusion (312) protruding inwards in a radial direction, one side of the third protrusion (312) away from the center rod (2) is provided with two layers of step surfaces, each layer of step surfaces has a predetermined slope, the slope directions of the two layers of step surfaces are the same, and the first limiting portion is formed at the connecting surface (3123) between the two layers of step surfaces.

5. The curling iron of claim 4, wherein said third protrusions (312) are at least two in number, any adjacent two of said third protrusions (312) having a gap (313) therebetween, said gap (313) forming said second stop.

6. The curling iron of claim 5, wherein said center rod (2) has a bone position (22) corresponding to said gap (313) on the outer periphery of the end near said self-locking catch (32), said bone position (22) being inserted in said gap (313).

7. The curling iron of claim 6, wherein said first pushing portion comprises:

the first top tooth (221) is arranged at one end, facing the self-locking buckle (32), of the bone position (22);

a first meshing tooth (23) provided at an end portion of the center rod (2);

the second pushing portion includes:

a bump (321) arranged on the periphery of the self-locking buckle (32), wherein an inclined surface (3211) used for being matched and pushed with the first top tooth (221) is arranged at one end, facing the first top tooth (221), of the bump (321);

and the second meshing tooth (322) is arranged at the end part of the self-locking buckle (32) and is matched with the first meshing tooth (23) for pushing.

8. A crimper, according to claim 6, characterized in that said bone site (22) has a length greater than the length of said gap (313).

9. A curling iron according to any of claims 6 to 8, wherein said central rod (2) is provided with a third stop portion at a position corresponding to said bone position (22), and said guiding post (31) is provided with a first stop screw (34), said first stop screw (34) extending between said third stop portion and said bone position (22).

10. A curling iron according to any of claims 3 to 8, further comprising a second limiting screw (35) for radially limiting said self-locking catch (32), which is fixedly connected to said central rod (2) after passing through said self-locking catch (32) and said guiding post (31) in sequence.