WO2024033907A1

WO2024033907A1 - Rotating curling iron

Info

Publication number: WO2024033907A1
Application number: PCT/IB2023/060185
Authority: WO
Inventors: Sarah Jane KENNEDY; Erin POTEMPA-WALL; Stephen ANKERS; Ye FENG
Original assignee: The Beachwaver Co.
Priority date: 2022-08-11
Filing date: 2023-10-10
Publication date: 2024-02-15
Also published as: GB202408463D0; GB2627701A; CN217791841U; US20240049855A1; AU2023323553A1; WO2024033907A8

Abstract

A rotating curling iron is disclosed according to the present disclosure, which includes a handle, a connecting seat, and a rotating curling iron rod. The handle includes a housing, an electric control device and a driving motor. The driving motor is electrically connected to the electric control device, and the housing has an opening end. The connecting seat is rotatably mounted in the housing and connected to the driving motor. The connecting seat has a connecting end exposed from the opening end, and a sealing structure is provided between the connecting seat and an inner wall of the opening end. The rotating curling iron rod includes a heating rod and a fixing seat connected to one end of the heating rod. The fixing seat is detachably connected with the connecting end. The technical scheme of the present disclosure can improve the waterproof effect of the rotating curling iron.

Description

ROTATING CURLING IRON

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims priority to China Patent Application No. 202222120209.4 filed on August 11 , 2022, the entire contents of which is incorporated herein for all purposes by this reference.

RELATED FIELD

[0002] The present disclosure relates to the field of hair styling appliances, and in particular, to a rotating curling iron.

BACKGROUND

[0003] With the improvement of people's living standards, people's requirements for hair styles are also increasing. Therefore, a variety of rotating curling irons are available in the market to meet the needs of different users. For the convenience of users, electric rotating curling irons are available in the market. However, in such rotating curling irons, water is easy to enter between the rotating part and the handle housing, and the waterproof effect thereof is poor.

SUMMARY

[0004] It is a main object of the present disclosure to provide a rotating curling iron, aiming at improving the waterproof effect thereof.

[0005] To achieve the above object, the rotating curling iron provided according to the present disclosure includes:

[0006] a handle, including a housing, an electric control device and a driving motor, wherein the driving motor is electrically connected to the electric control device, and the housing has an opening end;

[0007] a connecting seat, rotatably mounted in the housing and connected to the driving motor, wherein the connecting seat has a connecting end exposed from the opening end, and a sealing structure is provided between the connecting seat and an inner wall of the opening end; and [0008] a rotating curling iron rod, including a heating rod and a fixing seat connected to one end of the heating rod, wherein the fixing seat is detachably connected with the connecting end.

[0009] Optionally, the sealing structure includes a sealing groove formed on the inner wall of the opening end and a sealing protrusion formed on the outer periphery of the connecting seat, wherein the sealing protrusion is a ring extending in a rotation direction of the connecting seat, the sealing groove is arranged to enclose the outer periphery of the connecting seat, and the sealing protrusion is slidably mounted in the sealing groove.

[0010] Optionally, the rotating curling iron rod further includes a first wiring assembly, and the handle further includes a second wiring assembly electrically connected to the electronic control device; wherein one of the connecting end and the fixing seat is provided with an inserting cavity, and the other is provided with an inserting portion mating with the inserting cavity, wherein the inserting portion is provided with a first inserting hole, the inserting cavity is internally provided with an inserting protrusion, the first wiring assembly is arranged in the first inserting hole, and the second wiring assembly is arranged at the inserting protrusion; when the inserting portion is inserted into the inserting cavity, the inserting protrusion is inserted into the first inserting hole, and the first wiring assembly is correspondingly connected to the second wiring assembly.

[0011] Optionally, the inserting protrusion is provided with multiple second inserting holes, the first wiring assembly includes multiple conductive pillars arranged in the first inserting hole, and the second wiring assembly includes conductive components each arranged in the corresponding second inserting hole; when the inserting portion is inserted into the inserting cavity, the inserting protrusion is inserted into the first inserting hole, and each conductive pillar is correspondingly inserted into the respective inserting hole and contacts the corresponding conductive component.

[0012] Optionally, each conductive component is cylindrical, and when the inserting portion is inserted into the inserting cavity, the respective conductive pillar is inserted into an inner hole of the corresponding conductive component.

[0013] Optionally, a side wall of each conductive component is provided with a notch which extends axially throughout two ends of the conductive component, and an inner side of the conductive component is provided with a protruding portion which abuts against an outer peripheral surface of the corresponding conductive pillar when the conductive pillar is inserted into the conductive component.

[0014] Optionally, a cavity wall of the inserting cavity has a first arc surface and a first plane, the first arc surface and the first plane are distributed along the rotation direction of the connecting seat; the outer peripheral side of the inserting portion is provided with a second arc surface and a second plane; when the inserting portion is inserted into the inserting cavity, the first plane is opposite to the second plane, and the first arc surface is opposite to the second arc surface.

[0015] Optionally, the connecting end extends out from the opening end of the housing, and the rotating curling iron rod further includes a snapping structure, wherein the snapping structure includes a snapping component and a pressing component, the snapping component is movably mounted at the connecting end, and a snapping end of the snapping component is located in the inserting cavity; the pressing component is movably mounted at the connecting end, and abuts against a side, facing away from the inserting cavity, of the snapping component; the fixing seat is provided with the inserting portion, a clasping portion is provided on the outer peripheral side of the inserting portion, and the inserting portion is provided with the second wiring assembly; when the inserting portion is inserted into the inserting cavity, the clasping portion is located in the inserting cavity, and the snapping end of the snapping component is in a snap fit with the clasping portion.

[0016] Optionally, the snapping structure further includes an annular housing, the annular housing is sleeved outside the connecting end, the annular housing and the connecting end together define a mounting cavity, the annular housing is provided with an dowel hole communicating with the mounting cavity, and the snapping component is movably mounted in the mounting cavity and has a locked position and an unlocked position, wherein the pressing component abuts against a side, facing away from the connecting seat, of the snapping component and is exposed through the dowel hole, wherein the connecting seat is provided with a via hole communicating the inserting cavity with the mounting cavity, and the snapping end of the snapping component extends into the inserting cavity through the via hole.

[0017] Optionally, the inner side of the annular housing is provided with a position- limiting groove at a position corresponding to the via hole, the position- limiting groove penetrates through an end face of the annular housing and the cavity wall of the mounting cavity, the clasping portion protrudes from the outer peripheral surface of the inserting portion, and an end face, facing away from the heating rod, of the clasping portion is provided with a snapping hole; when the inserting portion is inserted into the inserting cavity, the clasping portion is correspondingly inserted into the position- limiting groove, and the snapping end of the snapping component is snapped into the snapping hole.

[0018] Optionally, the snapping structure includes two said snapping components and two said pressing components, the two said snapping components are respectively arranged on two opposite sides of the connecting seat, the two said snapping components are arranged in one-to-one correspondence with the two said pressing components, and the annular housing is provided with the dowel holes corresponding to the pressing components; and/or the rotating curling iron includes multiple said rotating curling iron rods, and one of the multiple rotating curling iron rods is selectively mounted to the connecting seat.

[0019] In the technical solution of the present disclosure, a driving motor and a connecting seat are arranged in the handle, so that the connecting seat is rotatably mounted in the housing of the handle and connected with the driving motor; and the connecting end of the connecting seat is exposed from the opening end of the housing and connected with the fixing seat of the hair curling rod. With such arrangement, the driving motor can be started to drive the curling iron rod to rotate during use, so as to achieve electric hair curling. That is, the user does not need to manually rotate the curling iron, which makes the hair curling very easy for the user. Moreover, a sealing structure is provided between the connecting seat and the inner wall of the opening end, which can effectively reduce the risk of water or dust flowing into the handle from the space between the connecting seat and the inner wall of the opening end, and improve the waterproof effect of the rotating curling iron while achieving the electric hair curling.

[0020] Further, the fixing seat and the connecting end are detachably connected, so that the rotating curling iron rod can be easily replaced. For example, the user may purchase rotating curling iron rods of different specifications, and select corresponding rotating curling iron rods for hair curling according to different needs during use. In addition, when the rotating curling iron rod or handle is damaged, only the damaged part therein needs to be replaced without replacing the whole rotating curling iron.

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] For more clearly illustrating embodiments of the present disclosure or the technical solutions in the conventional technology, drawings referred to for describing the embodiments or the conventional technology will be briefly described hereinafter. Apparently, the drawings in the following description are only some examples of the present disclosure, and for those skilled in the art, other drawings may be obtained based on the structures illustrated in these drawings without any creative efforts.

[0022] FIG. 1 is a structural view of a rotating curling iron according to an embodiment of the present disclosure;

[0023] FIG. 2 is a cross-sectional view of a rotating curling iron rod in FIG. 1;

[0024] FIG. 3 is an enlarged view of portion A in FIG. 2;

[0025] FIG. 4 is a structural view of a connecting seat in FIG. 3, with the rotating curling iron rod shown removed;

[0026] FIG. 5 is a structural view of a handle in FIG. 1 ;

[0027] FIG. 6 is an enlarged view of portion B in FIG. 5; [0028] FIG. 7 is a structural view of a snapping component and a pressing component in FIG. 6;

[0029] FIG. 8 is a structural view of the rotating curling iron rod in FIG. 1 ;

[0030] FIG. 9 is an enlarged view of portion C in FIG. 8;

[0031] FIG. 10 is a structural view of a conductive component in FIG. 3;

[0032] FIG. 11 is a structural view of the connecting seat, a driving motor and an insulating mounting structure in FIG. 3;

[0033] FIG. 12 is an exploded view of the connecting seat and the insulating mounting structure in FIG. 11 ; and

[0034] FIG. 13 is an exploded view of the handle and multiple rotating curling iron rods in an embodiment of the rotating curling iron of the present disclosure.

[0035] Reference numerals are listed as follows:

[0036] 10 handle; 11 housing; 111 sealing groove; 12 circuit board; 13 conductive ring; 14 conductive sheet; 141 connecting pin; 142 elastic contact sheet; 15 conductive component; 151 notch; 152 protruding portion; 16 driving motor; 17 forward-rotation button; 18 reverse- rotation button; 19 power button; 20 connecting seat; 201 inserting cavity; 202 arc groove; 203 via hole; 21 inserting protrusion; 211 second inserting hole; 22 position-limiting projection; 23 mistake-proof raised rib; 24 first arc surface; 25 first plane; 27 sealing protrusion; 31 snapping component; 311 snapping end; 312 rotating end; 313 position- limiting snapping hole; 314 rotating groove; 315 position- limiting groove; 32 pressing component; 321 position- limiting snapping lug; 33 annular housing; 331 mounting cavity; 332 dowel hole; 333 position- limiting groove; 35 elastic component; 40 hair curling rod; 41 heating rod; 42 fixing seat; 421 inserting portion; 422 first inserting hole; 423 second arc surface; 424 second plane; 425 clasping portion; 426 snapping hole; 427 buckling portion; 428 mistake-proof groove; 51 conductive pillar; 60 insulating mounting structure; 61 mounting ring; 611 first section; 612 second section; 613 mounting ring groove; 71 rotating shaft.

[0037] The realization of the objects, functional characteristics and advantages of the present disclosure will be further described in conjunction with the embodiments and with reference to the drawings.

DETAILED DESCRIPTION

[0038] Technical solutions according to the embodiments of the present disclosure will be described clearly and completely as follows in conjunction with the accompany drawings in the embodiments of the present disclosure. It is obvious that the described embodiments are only a part of the embodiments according to the present disclosure, rather than all of the embodiments. All the other embodiments obtained by those skilled in the art based on the embodiments in the present disclosure without any creative efforts belong to the scope of protection of the present disclosure.

[0039] It should be noted that, if there is directional indication (such as up, down, left, right, front, and back) in the embodiments of the present disclosure, the directional indication is only for explaining a relative position, a relative movement or the like between components in a certain posture (as shown in the drawings). The directional indication varies with the posture.

[0040] In addition, if there is a description of "first", "second" and the like in the embodiments of the present disclosure, the description of "first", "second" and the like is only for description purposes, and cannot be construed as indicating or implying the relative importance thereof or implicitly indicating the number of technical features indicated. Thus, features defined by "first" and "second" may explicitly or implicitly at least one of the features is provided. In addition, the "and/or" used in the description means three parallel solutions are included. Taking "A and/or B" as an example, it includes a solution of A, a solution of B, or a solution of both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, on the premise that they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such a combination of technical solutions does not exist, and is not within the protection scope of the present disclosure.

[0041] A rotating curling iron is provided according to the present disclosure.

[0042] In this embodiment of the present disclosure, as shown in FIG. 1 to FIG. 13, the rotating curling iron includes a handle 10, a connecting seat 20, and a rotating curling iron rod 40. The handle 10 includes a housing 11, an electric control device and a driving motor 16, wherein the driving motor 16 is electrically connected to the electric control device and the housing 11 has an opening end. The connecting seat 20 is rotatably mounted in the housing 11 and connected to the driving motor 16, wherein the connecting seat 20 has a connecting end exposed from the opening end, and a sealing structure is provided between the connecting seat 20 and an inner wall of the opening end. The rotating curling iron rod 40 includes a heating rod 41 and a fixing seat 42 connected to one end of the heating rod 41, wherein the fixing seat 42 is connected with the connecting end.

[0043] Specifically, during use, the driving motor 16 can be controlled to start or stop by the electric control device, and when the driving motor 16 is started, the driving motor 16 can drive the connecting seat 20 to rotate, thereby driving the curling iron rod 40 to rotate to curl hair. The fixing seat 42 may be provided with a latch extending to a side of the heating rod 41 so that when curling hair, the end of hair may be placed between the latch and the heating rod 41, thereby reducing the risk of hair falling from the rotating curling iron rod 40 during the curling process. Alternatively, the fixing seat 42 is provided with a rotatable clipping plate extending to a side of the heating rod 41 so that when curling hair, the clipping plate can be opened relative to the rotating curling iron rod 40, and hair curling can be carried out after the end of hair is placed between the clipping plate and the heating rod 41, also reducing the risk of hair falling from the rotating curling iron rod 40 during the curling process. Alternatively, no hair clipping structure may be provided, and during use, the hair is pre-fixed by repeatedly winding the end of hair around the heating rod 41 or the fixing seat 42 first, and hair curling is then carried out. In addition, the driving motor 16 may be an inner-rotor motor or an outer- rotor motor.

[0044] In addition, the fixing seat 42 can be detachably connected to the connecting end in a variety of ways. For example, in an embodiment, the fixing seat 42 is secured to the connecting end by snap fit. In other embodiments, the fixing seat 42 is connected to the connecting end by magnetic attraction. In further embodiments, the fixing seat 42 is connected to the connecting end by a threaded structure.

[0045] In the technical solution of the present disclosure, a driving motor 16 and a connecting seat 20 are arranged in the handle 10, so that the connecting seat 20 is rotatably mounted in the housing 11 of the handle 10 and connected with the driving motor 16; and the connecting end of the connecting seat 20 is exposed from the opening end of the housing 11 and connected with the fixing seat 42 of the rotating curling iron rod 40. With such arrangement, the driving motor 16 can be started to drive the hair curling rod 40 to rotate during use, so as to achieve electric hair curling. That is, the user does not need to manually rotate the rotating curling iron, which makes the hair curling very easy for the user. Moreover, a sealing structure is provided between the connecting seat 20 and the inner wall of the opening end, which can effectively reduce the risk of foreign matter, such as water or dust, flowing into the handle 10 from the space between the connecting seat 20 and the inner wall of the opening end, and improve the waterproof effect of the rotating curling iron while achieving the electric hair curling.

[0046] In some embodiments, the sealing structure includes a sealing groove 111 formed on the inner wall of the opening end and a sealing protrusion 27 formed on the outer periphery of the connecting seat 20. The sealing protrusion 27 is a ring extending in a rotation direction of the connecting seat 20, the sealing groove 111 is arranged to enclose the outer periphery of the connecting seat 20, and the sealing protrusion 27 is slidably mounted in the sealing groove 111 (that is, when the connecting seat 20 rotates relatively, the sealing protrusion 27 can rotate in the sealing groove 111, following the connecting seat 20, and when the groove wall of the sealing groove 111 contacts the sealing protrusion 27, the two can slide relative to each other). That is, the sealing protrusion 27 is in a clearance fit with the sealing groove 111. Such arrangement of the sealing protrusion 27 and the sealing groove 111 can increase the length of the gap between the connecting seat 20 and the housing 11, i.e., increase the flow path of water between the connecting seat 20 and the housing 11, which can effectively reduce the possibility of water flowing into the housing 11 through the gap between the connecting seat 20 and the housing 11 , and reduce the risk of water entering between the connecting seat 20 and the housing 11. In other embodiments, the sealing structure includes a sealing ring sleeved outside the connecting seat 20.

[0047] In some embodiments, the fixing seat 42 and the connecting end are detachably connected, so that the rotating curling iron rod 40 can be easily replaced. For example, the user may purchase rotating curling iron rods 40 of different specifications, and select corresponding rotating curling iron rods 40 for hair curling according to different needs during use. In addition, when the rotating curling iron rod 40 or handle 10 is damaged, only the damaged part therein needs to be replaced without replacing the whole rotating curling iron.

[0048] In some embodiments, the rotating curling iron rod 40 further includes a first wiring assembly, and the handle 10 further includes a second wiring assembly electrically connected to the electronic control device. One of the connecting end and the fixing seat 42 is provided with an inserting cavity 201, and the other is provided with an inserting portion 421 mating with the inserting cavity 201. The inserting portion 421 is provided with a first inserting hole 422, the inserting cavity 201 is internally provided with an inserting protrusion 21, the first wiring assembly is arranged in the first inserting hole 422, and the second wiring assembly is arranged at the inserting protrusion 21. When the inserting portion 421 is inserted into the inserting cavity 201, the inserting protrusion 21 is inserted into the first inserting hole 422, and the first wiring assembly is correspondingly connected to the second wiring assembly.

[0049] In the present embodiment, the rotating curling iron includes a power line. The power line is mounted at an end, away from the rotating curling iron rod 40, of the handle 10, and is electrically connected with the electric control device. The first wiring assembly is electrically connected with a heating structure inside the heating rod 41. The electric control device includes a circuit board 12 arranged in the housing 11. The second wiring assembly is arranged at the connecting seat 20, and is electrically connected with the circuit board 12. The power line is integrally connected to the handle 10, or the power line is detachably connected to the handle 10.

[0050] One of the connecting end of the connecting seat 20 and the fixing seat 42 of the rotating curling iron rod 40 is provided with the inserting cavity 201, and the other is provided with the inserting portion 421 mating with the inserting cavity 201. The inserting portion 421 is provided with the first inserting hole 422, and the inserting cavity 201 is internally provided with the inserting protrusion 21. Further, the first wiring assembly is arranged in the first inserting hole 422, and the second wiring assembly is arranged at the inserting protrusion 21. Due to the above arrangement, when the inserting portion 421 is inserted into the inserting cavity 201, the inserting protrusion 21 is inserted into the first inserting hole 422, and the first wiring assembly is correspondingly connected to the second wiring assembly. Due to the above arrangement, with the inserting portion 421 inserted into the inserting cavity 201, the length of the gap between the first wiring assembly and the second wiring assembly, and the outer side surface of the rotating curling iron can be increased, which is equivalent to increasing the path of water entering the first wiring assembly and the second wiring assembly from the outside of the rotating curling iron. Such arrangement can also reduce the risk of water entering the first wiring assembly and the second wiring assembly, that is, reduce the risk of water invasion between the rotating curling iron rod 40 and the handle 10, and improve the waterproof effect of the rotating curling iron during use. Moreover, the inserting engagement between the fixing seat 42 and the connecting seat 20 enlarges the contact area between the fixing seat 42 and the connecting seat 20, and improves the stability of connection between the fixing seat 42 and the connecting seat 20.

[0051] In some embodiments, the inserting protrusion 21 is provided with multiple second inserting holes 211, the first wiring assembly includes multiple conductive pillars 51 arranged in the first inserting hole 422, and the second wiring assembly includes conductive components 15 each arranged in the corresponding second inserting hole 211. When the inserting portion 421 is inserted into the inserting cavity 201, the inserting protrusion 21 is inserted into the first inserting hole 422, and each conductive pillar 51 is correspondingly inserted into the respective inserting hole and contacts the corresponding conductive component 15. With such arrangement, the multiple conductive components 15 can be separated from each other, and the path between the conductive components 15 is increased. That is, when the rotating curling iron rod 40 is removed, even if a small amount of water drips into the inserting cavity 201, it is still difficult for the water to contact two conductive components 15 at the same time, i.e., a short circuit is difficult to occur between two adjacent conductive components 15, which greatly reduces the risk of short circuit of the second wiring assembly caused by water invasion. In other embodiments, the second wiring assembly includes multiple conductive contact plates provided on an end face of the inserting protrusion 21, wherein the multiple conductive contact plates are in one-to-one correspondence with the multiple conductive pillars 51.

[0052] In some embodiments, each conductive component 15 is cylindrical, and when the inserting portion 421 is inserted into the inserting cavity 201, the respective conductive pillar 51 is inserted into an inner hole of the corresponding conductive component 15. Such arrangement can reduce the requirement of mating accuracy of the conductive pillars 51 and the conductive components 15, bring the conductive components 15 into better contact with the conductive pillars 51, and reduce the risk of poor contact between the conductive components 15 and the conductive pillars 51. In other embodiments, each conductive component 15 may also be of an elastic-sheet structure provided in the corresponding second inserting hole 211.

[0053] In some embodiments, a side wall of each conductive component 15 is provided with a notch 151 which extends axially throughout two ends of the conductive component 15, and an inner side of the conductive component 15 is provided with a protruding portion 152 which abuts against an outer peripheral surface of the corresponding conductive pillar 51 when the conductive pillar 51 is inserted into the conductive component. Specifically, after the conductive pillar 51 is inserted into the inner hole of the conductive component 15 and the conductive pillar 51 abuts the protruding portion 152, the conductive component 15 is expanded outward, and elastically deforms to squeeze the conductive pillar 51 at the same time, so that the conductive component 15 abuts tightly against the outer peripheral surface of the conductive pillar 51, and the conductive component 15 is in close contact with the conductive pillar 51, further reducing the risk of poor contact between the conductive component 15 and the conductive pillar 51.

[0054] In some embodiments, a cavity wall of the inserting cavity 201 has a first arc surface 24 and a first plane 25. The first arc surface 24 and the first plane 25 are distributed along the rotation direction of the connecting seat 20. The outer peripheral side of the inserting portion 421 is provided with a second arc surface 423 and a second plane 424. When the inserting portion 421 is inserted into the inserting cavity 201, the first plane 25 is opposite to the second plane 424, and the first arc surface 24 is opposite to the second arc surface 423. Specifically, the cavity wall of the inserting cavity 201 has two opposite first arc surfaces 24 and two opposite first planes 25. The two first arc surfaces 24 and the two first planes 25 are alternately distributed along the rotation direction of the connecting seat 20. Likewise, the outer peripheral side of the inserting portion 421 has two opposite second arc surfaces 423 and two opposite second planes 424. The two second arc surfaces 423 and the two second planes 424 are alternately distributed along the rotation direction of the connecting seat 20. When the inserting portion 421 is inserted into the inserting cavity 201, the two first planes 25 are in one-to-one correspondence with the two second planes 424, and the two first arc surfaces 24 are in one-to-one correspondence with the two second arc surfaces 423. Such arrangement can prevent the fixing seat 42 from rotating relative to the connecting seat 20, and improve the stability of installation of the rotating curling iron rod 40. In other embodiments, the cavity wall of the inserting cavity 201 may have only one first arc surface 24 and one first plane 25.

[0055] In some embodiments, one of the outer side surface of the inserting portion 421 and the cavity wall of the inserting cavity 201 is provided with a mistake-proof raised rib 23, and the other is provided with a mistake-proof groove 428. When the inserting portion 421 is inserted into the inserting cavity 201, the mistake-proof raised rib 23 is inserted into the mistake-proof groove 428. Such arrangement makes it convenient for the user to install the rotating curling iron rod 40 and avoids wrong installation by the user.

[0056] In some embodiments, the connecting end extends out from the opening end of the housing 11, and the rotating curling iron rod 40 further includes a snapping structure. The snapping structure includes a snapping component 31 and a pressing component 32, the snapping component 31 is movably mounted at the connecting end, and a snapping end 311 of the snapping component 31 is located in the inserting cavity 201. The pressing component 32 is movably mounted at the connecting end, and abuts against a side, facing away from the inserting cavity 201, of the snapping component 31. The fixing seat 42 is provided with the inserting portion 421, a clasping portion 425 is provided on the outer peripheral side of the inserting portion 421, and the inserting portion 421 is provided with the second wiring assembly. When the inserting portion 421 is inserted into the inserting cavity 201, the clasping portion 425 is located in the inserting cavity 201, and the snapping end 311 of the snapping component 31 is in a snap fit with the clasping portion 425.

[0057] Specifically, the snapping end 311 is formed with a hook extending in a direction away from the inserting cavity 201, an end face, away from the heating rod 41, of the clasping portion 425 is provided with a snapping hole 426, and the hole wall, away from the inserting portion 421, of the snapping hole 426 is provided with a buckling portion 427. When the inserting portion 421 is inserted into the inserting cavity 201, the snapping end 311 of the snapping component 31 is inserted into the snapping hole 426, and the hook is held on the buckling portion 427, thus achieving the snap fit of the connecting seat 20 with the fixing seat 42. When the rotating curling iron rod 40 needs to be removed, the pressing component 32 is pressed downward so that the snapping component 31 moves towards the inserting cavity 201, and when the hook is detached from the buckling portion 427, the inserting portion 421 can be pulled out from the inserting cavity 201 to remove the rotating curling iron rod 40. In other embodiments, the snapping component 31 has the snapping end 311, a pressing end, and a hinge portion between the snapping end 311 and the pressing end. The hinge portion is hinged to the connecting seat 20. The snapping end 311 has the hook extending towards the inserting cavity 201. The pressing component 32 abuts against a side, facing away from the inserting cavity 201, of the pressing end.

[0058] The snapping end 311 of the snapping component 31 is located in the inserting cavity 201. When the inserting portion 421 is inserted into the inserting cavity 201, the clasping portion 425 is located in the inserting cavity 201, and is in a snap fit with the snapping end 311 of the snapping component 31. Thus, even when the rotating curling iron rod 40 is removed from the connecting seat 20, the snapping end 311 of the snapping component 31 can be located in the inserting cavity 201, so as to avoid the risk of the snapping end 311 extending out of the inserting cavity 201 and being damaged by collision, thereby improving the use reliability of the snapping structure.

[0059] In some embodiments, the snapping structure further includes an annular housing 33, the annular housing 33 is sleeved outside the connecting end, the annular housing 33 and the connecting end together define a mounting cavity 331, the annular housing 33 is provided with an dowel hole 332 communicating with the mounting cavity 331, and the snapping component 31 is movably mounted in the mounting cavity 331 and has a locked position and an unlocked position. The pressing component 32 abuts against a side, facing away from the connecting seat 20, of the snapping component 31 and is exposed through the dowel hole 332. The connecting seat 20 is provided with a via hole 203 communicating the inserting cavity 201 with the mounting cavity 331, and the snapping end 311 of the snapping component 31 extends into the inserting cavity 201 through the via hole 203.

[0060] Specifically, the hook of the snapping end 311 extends towards the annular housing 33, and is separated from the inner side surface of the annular housing 33. When the inserting portion 421 is inserted into the inserting cavity 201, the snapping end 311 of the snapping component 31 is inserted into the snapping hole 426, and the hook is held on the buckling portion 427, thus achieving the snap fit of the connecting seat 20 with the fixing seat 42. When the rotating curling iron rod 40 needs to be removed, the pressing component 32 is pressed downward so that the snapping component 31 moves towards the inserting cavity 201, and when the hook is detached from the buckling portion 427, the inserting portion 421 can be pulled out from the inserting cavity 201 to remove the rotating curling iron rod 40. In this arrangement, the annular housing 33 is arranged outside the connecting seat 20, so that the mounting cavity 331 is formed between the annular housing 33 and the outer side of the connecting seat 20 to mount the snapping component 31 and the pressing component 32. This arrangement simplifies the structure of the connecting seat 20. Alternatively, the connecting seat 20 may be provided as an integral structure to improve the structural strength of the connecting seat 20, thereby reducing the risk of deformation or damage of the connecting seat 20 during rotation, and further improving the reliability of automatic hair curling of the rotating curling iron. Moreover, the snapping end 311 of the snapping component 31 is arranged in the inserting cavity 201, thereby avoiding the risk of the snapping end 311 extending out of the inserting cavity 201 and being damaged by collision, and further improving the use reliability of the snapping structure.

[0061] In other embodiments, the connecting seat 20 is pieced together from two seat bodies, that is, two seat bodies jointly unite to form the inserting cavity 201, the mounting cavity 331 and the via hole 203, and the uniting surfaces of the two seat bodies are parallel to the rotation axis of the connecting seat 20.

[0062] In some embodiments, the inner side of the annular housing 33 is provided with a position-limiting groove 333 at a position corresponding to the via hole 203, the position-limiting groove 333 penetrates through an end face of the annular housing 33 and the cavity wall of the mounting cavity 331, the clasping portion 425 protrudes from the outer peripheral surface of the inserting portion 421, and an end face, facing away from the heating rod 41, of the clasping portion 425 is provided with the snapping hole 426. When the inserting portion 421 is inserted into the inserting cavity 201, the clasping portion 425 is correspondingly inserted into the position- limiting groove 333, and the snapping end 311 of the snapping component 31 is snapped into the snapping hole 426. Such arrangement takes advantage of the engagement between the space of the annular housing 33 and the snapping portion, and prevents the snapping portion and the snapping structure from occupying the engagement space of the inserting portion 421 and the inserting cavity 201, so that the fixing seat 42 and the connecting seat 20 have a large engagement area and are connected stably, and the structure of the connecting seat 20 and the snapping structure can be compact, which is beneficial to reducing the size of the rotating curling iron rod 40 and makes it easy for the user to hold and use. In addition, when the clasping portion 425 is correspondingly inserted into the position- limiting groove 333, rotation of the fixing seat 42 relative to the connecting seat 20 can be effectively prevented, so that the installation of the rotating curling iron rod 40 is more stable.

[0063] In some embodiments, the snapping structure further includes an elastic component 35 which is compressed between the snapping component 31 and the pressing component 32. Specifically, when the pressing component 32 is pressed downward, the snapping component 31 compresses the elastic component 35 so that the elastic component deforms under compression, while when the pressing component 32 is released, the snapping component 31 is driven to move away from the inserting cavity 201 under the elastic action of the elastic component 35. That is, when the inserting portion 421 is inserted into the inserting cavity 201 and the snapping end 311 of the snapping component 31 is inserted into the snapping hole 426, the hook is held on the buckling portion 427 under the action of the elastic component 35. When the rotating curling iron rod 40 needs to be removed, the pressing component 32 is pressed downward so that the snapping component 31 moves towards the inserting cavity 201, and when the hook is detached from the buckling portion 427, the inserting portion 421 can be pulled out from the inserting cavity 201 to remove the rotating curling iron rod 40. Providing the elastic component 35 between the snapping component 31 and the pressing component 32 can simplify the structure of the snapping component 31 and simplify the snapping structure. In other embodiments, the snapping component 31 itself is configured as an elastic-sheet structure to achieve the reset of the snapping component 31.

[0064] In some embodiments, the snapping component 31 is provided with a position- limiting groove 315, and one end of the elastic component 35 abuts in the position- limiting groove 315. In this way, the offset of the elastic component 35 relative to the snapping component 31 can be limited by the position- limiting groove 315, thereby making the installation of the elastic component 35 stable and improving the reliability of the snapping structure.

[0065] In some embodiments, the connecting seat 20 is provided with a position- limiting projection 22, the elastic component 35 is a compression spring, and an end, away from the pressing component 32, of the elastic component 35 is sleeved on the position- limiting projection 22. In this way, the offset of the elastic component 35 relative to the connecting seat 20 can be limited by the position- limiting projection 22, thereby making the installation of the elastic component 35 stable and improving the reliability of the snapping structure. In addition, using a compression spring as the elastic component 35 can improve the structural strength and reliability of the elastic component 35. In other embodiments, the elastic component 35 may be an elastic sheet or a rubber block.

[0066] In some embodiments, the snapping component 31 further has a rotating end 312 opposing the snapping end 311. The rotating end 312 is rotatably mounted in the mounting cavity 331, and the pressing component 32 is sandwiched between the rotating end 312 and the snapping end 311. That is, the snapping end 311 is rotatably mounted in the mounting cavity 331 with the rotating end 312 as the axis. Compared with the way that the whole of the snapping component 31 is slidably mounted in the mounting cavity 331 along the hole depth direction of the dowel hole 332 (a direction perpendicular to the rotation axis of the connecting seat 20), the rotating end 312 in this scheme is basically stationary along the hole depth direction of the dowel hole 332, and the movement space required by the rotating end 312 in the mounting cavity 331 is small, so that the space occupied by the snapping component 31 in the mounting cavity 331 can be reduced, and the structural compactness of the connecting seat 20 and the snapping structure can be improved, which is beneficial to reducing the size of the rotating curling iron rod 40 and makes it easy for the user to hold and use.

[0067] In some embodiments, the mounting cavity 331 is internally provided with a rotating shaft 71, the rotating end 312 is provided with a rotating groove 314, two ends of the rotating groove 314 are through along the axial direction of the rotating shaft 71, the rotating end 312 is rotatably mounted to the rotating shaft 71 via the rotating groove 314, and the groove opening of the rotating groove 314 is located at a side, facing away from the connecting seat 20, of the rotating end 312. Specifically, the outer peripheral surface of the rotating portion is substantially circumferential, and the rotating end 312 is substantially in the form of a hook. During installation, the rotating shaft 71 may be mounted in the mounting cavity 331 first, and the rotating end 312 may then be snapped between the rotating shaft 71 and the connecting seat 20 through the groove opening of the rotating groove 314, so as to avoid the inconvenient locating of the shaft hole of the rotating portion with the rotating shaft 71 and facilitate the installation of the snapping component 31.

[0068] In some embodiments, the connecting seat 20 is provided with an arc groove 202 at a position corresponding to the rotating shaft 71, and the rotating end 312 is rotatably mounted in the arc groove 202. Such arrangement allows the rotating end 312 to rotate stably in the arc groove 202, and allows the snapping component 31 to rotate stably and reliably, thereby reducing the risk of failure of the snapping component 31. [0069] In some embodiments, the pressing component 32 is provided with a position- limiting snapping lug 321, the snapping component 31 is provided with a position- limiting snapping hole 313, and the position- limiting snapping lug 321 is movably snapped in the position-limiting snapping hole 313. Specifically, the length of the position-limiting snapping lug 321 is greater than the hole depth of the position- limiting snapping hole 313, so that the pressing component 32 and the snapping component 31 can be well constrained together, and the circumstance that the rotation of the snapping component 31 is limited due to rigid connection between the pressing component 32 and the snapping component 31 can be avoided. [0070] In some embodiments, the snapping structure includes two said snapping components 31 and two said pressing components 32, the two said snapping components 31 are respectively arranged on two opposite sides of the connecting seat 20, the two said snapping components 31 are arranged in one-to-one correspondence with the two said pressing components 32, and the annular housing 33 is provided with the dowel holes 332 corresponding to the pressing components 32. Specifically, the fixing seat 42 is provided with clasping portions 425 corresponding to the snapping components 31, and each snapping component 31 is correspondingly in a snap fit with one clasping portion 425 when the inserting portion 421 is inserted into the inserting cavity 201. Such arrangement, on the one hand, increases the connection positions of the fixing seat 42 and the connecting seat 20, and improves the stability of connection of the fixing seat 42 with the connecting seat 20, and on the other hand, makes it easy for the user to unlock by pressing the two pressing components 32 at the same time. In addition, in the case that two snapping components 31 and two pressing components 32 are provided, the two pressing components 32 need to be pressed at the same time, so that the two snapping components 31 are detached from the clasping portions 425 at the same time, and then the fixing seat 42 of the rotating curling iron rod 40 can be detached from connecting seat 20, thereby reducing the risk of falling of the rotating curling iron rod 40 caused by mis-pressing the pressing components 32.

[0071] In some embodiments, the handle 10 further includes the driving motor 16 arranged in the housing 11, and the electric control device is electrically connected with the driving motor 16. The connecting seat 20 is rotatably mounted in the housing 11 and is connected to the output shaft of the driving motor 16. Thus, when curling hair, the driving motor 16 can drive the connecting seat 20 and the rotating curling iron rod 40 to rotate together for hair curling, which greatly facilitates the hair curling of the user.

[0072] In some embodiments, the electronic control device further includes a forward-rotation button 17 and a reverse- rotation button 18 arranged at the housing 11. The forward-rotation button 17 and the reverse-rotation button 18 are both electrically connected to the circuit board 12, and are both arranged at one end, close to the rotating curling iron rod 40, of the housing 11 so that the two buttons are convenient for the user to press.

[0073] In some embodiments, the electronic control device further includes a power button 19 arranged at the housing 11. The power button 19 is electrically connected to the circuit board 12, and is arranged at one end, away from the rotating curling iron rod 40, of the housing 11 so as to avoid the risk of the user touching the power button 19 by mistake during hair curling.

[0074] In some embodiments, the rotating curling iron includes multiple rotating curling iron rods 40, and one of the multiple rotating curling iron rods 40 is selectively mounted to the connecting seat 20. Specifically, the multiple rotating curling iron rods 40 each include the heating rod 41 and the fixing seat 42, and the heating rods 41 of the multiple rotating curling iron rods 40 differ in size and/or shape, i.e. the heating rods 41 of the multiple rotating curling iron rods 40 have different sizes and/or shapes. Thus, it is convenient for the user to select a suitable rotating curling iron rod 40 for hair curling according to the hair curling needs, so as to meet individual needs.

[0075] In some embodiments, the connecting seat 20 has a connecting shaft 26 extending toward the driving motor 16. An insulating mounting structure 60 is sleeved outside the connecting shaft 26. The insulating mounting structure 60 is connected to the output shaft of the driving motor 16. Multiple mounting ring grooves 613 are provided on a peripheral side of the insulating mounting structure 60. The multiple mounting ring grooves 613 are spaced apart along the axial direction of the connecting shaft 26. The fixing seat 42 is provided with the first wiring assembly. The electric control device includes the circuit board 12, the second wiring assembly, multiple conductive rings 13 and multiple conductive sheets 14. The circuit board 12 is fixed in the housing 11. Each conductive ring 13 is correspondingly mounted in one mounting ring groove 613 and electrically connected to the second wiring assembly. The multiple conductive sheets 14 are all mounted to the circuit board 12, and each conductive sheet 14 correspondingly abuts against an outer side surface of one conductive ring 13.

[0076] Specifically, the insulating mounting structure 60 and the connecting shaft 26 are fixed relative to each other in the rotation direction of the connecting seat 20, i.e., the insulating mounting structure 60 and the connecting seat 20 rotate together under the drive of the driving motor 16. The circuit board 12 is fixed relative to the housing 11. When the driving motor 16 drives the insulating mounting structure 60 and the connecting seat 20 to rotate, each conductive ring 13 in the corresponding mounting ring groove 613 rotates with the insulating mounting structure 60, and each conductive ring 13 rotates relative to the corresponding conductive sheet 14. During the rotation of the respective conductive ring 13 relative to the corresponding conductive sheet 14, the conductive sheet 14 abuts against the outer peripheral surface of the conductive ring 13. In this way, a well electrical connection can be achieved between the conductive sheet 14 and the conductive ring 13 while the connecting seat 20 is rotated.

[0077] In some embodiments, each conductive sheet 14 includes a connecting pin 141 and two elastic contact sheets 142 arranged on two opposite sides of the connecting pin 141. The two elastic contact sheets 142 are respectively arranged on two opposite sides of the corresponding conductive ring 13 and elastically abut against the outer peripheral surface of the corresponding conductive ring 13, i.e., the two elastic contact sheets 142 are elastically deformed toward each other. In this way, the conductive sheet 14 can be brought into full contact with the conductive ring 13. Further, even if one elastic contact sheet 142 is temporarily separated from the conductive ring 13 during the rotation of the connecting seat 20, the risk of poor contact between the conductive sheet 14 and the conductive ring 13 can still be reduced by means of the contact between the other elastic contact sheet 142 and the conductive ring 13.

[0078] In some embodiments, the insulating mounting structure 60 includes multiple mounting rings 61. Each mounting ring 61 includes a first section 611 and a second section 612 which are connected with each other. The outer diameter of the first section 611 is smaller than the outer diameter of the second section 612 to form the mounting ring groove 613 on the outer side of the first section 611. The multiple mounting rings 61 are sequentially distributed in the direction from the driving motor 16 to the connecting seat 20, and the first section 611 of each mounting ring 61 is located on one side, away from the driving motor 16, of its second section 612. The conductive ring 13 is in the form of a continuous ring (closed ring). In this way, even if there is a breach on the conductive ring 13, the conductive sheet 14 is always in full contact with the conductive ring 13 when the conductive ring 13 is rotated for one cycle, and the risk of poor contact between the conductive sheet 14 and the conductive ring 13 can be reduced.

[0079] The above embodiments are only preferred embodiments of the present disclosure, and not intended to limit the scope of the present disclosure. Within the inventive concept of the present disclosure, any equivalent structural substitutions made by using the contents of description and drawings of the present disclosure, or direct/indirect applications in other related technical fields are included in the scope of protection of the present disclosure.

Claims

1. A rotating curling iron, comprising: a handle comprising a housing, an electric control device and a driving motor, wherein the driving motor is electrically connected to the electric control device, and the housing has an opening end; a connecting seat rotatably mounted in the housing and connected to the driving motor, wherein the connecting seat has a connecting end exposed from the opening end, and a sealing structure is provided between the connecting seat and an inner wall of the opening end; and a rotating curling iron rod comprising a heating rod and a fixing seat connected to one end of the heating rod, wherein the fixing seat is detachably connected with the connecting end.

2. The rotating curling iron according to claim 1, wherein the sealing structure comprises a sealing groove formed on an inner wall of the opening end and a sealing protrusion formed on an outer periphery of the connecting seat, wherein the sealing protrusion is a ring extending in a rotation direction of the connecting seat, the sealing groove is arranged to enclose the outer periphery of the connecting seat, and the sealing protrusion is slidably mounted in the sealing groove.

3. The rotating curling iron according to claim 1, wherein the rotating curling iron rod further comprises a first wiring assembly, and the handle further comprises a second wiring assembly electrically connected to the electronic control device; wherein one of the connecting end and the fixing seat is provided with an inserting cavity, and the other is provided with an inserting portion mating with the inserting cavity, wherein the inserting portion is provided with a first inserting hole, the inserting cavity is internally provided with an inserting protrusion, the first wiring assembly is arranged in the first inserting hole, and the second wiring assembly is arranged at the inserting protrusion; and when the inserting portion is inserted into the inserting cavity, the inserting protrusion is inserted into the first inserting hole, and the first wiring assembly is correspondingly connected to the second wiring assembly.

4. The rotating curling iron according to claim 3, wherein the inserting protrusion is provided with a plurality of second inserting holes, the first wiring assembly comprises a plurality of conductive pillars arranged in the first inserting hole, and the second wiring assembly comprises conductive components arranged in the second inserting hole; and when the inserting portion is inserted into the inserting cavity, the inserting protrusion is inserted into the first inserting hole, and each of the conductive pillars is correspondingly inserted into one of the inserting holes and contacts the corresponding conductive component.

5. The rotating curling iron according to claim 4, wherein the conductive component is cylindrical, and when the inserting portion is inserted into the inserting cavity, the conductive pillar is inserted into an inner hole of the conductive component; a side wall of the conductive component is provided with a notch which extends axially throughout two ends of the conductive component, and an inner side of the conductive component is provided with a protruding portion which abuts against an outer peripheral surface of the conductive pillar when the conductive pillar is inserted into the conductive component.

6. The rotating curling iron according to claim 3, wherein a cavity wall of the inserting cavity has a first arc surface and a first plane, the first arc surface and the first plane are distributed along a rotation direction of the connecting seat; an outer peripheral side of the inserting portion is provided with a second arc surface and a second plane; and when the inserting portion is inserted into the inserting cavity, the first plane is opposite to the second plane, and the first arc surface is opposite to the second arc surface.

7. The rotating curling iron according to claim 6, wherein the connecting end extends out of the opening end of the housing, and the rotating curling iron rod further comprises a snapping structure, wherein the snapping structure comprises a snapping component and a pressing component, the snapping component is movably mounted at the connecting end, and a snapping end of the snapping component is located in the inserting cavity; the pressing component is movably mounted at the connecting end, and abuts against a side, facing away from the inserting cavity, of the snapping component; the fixing seat is provided with the inserting portion, a clasping portion is provided on the outer peripheral side of the inserting portion, and the inserting portion is provided with the second wiring assembly; and when the inserting portion is inserted into the inserting cavity, the clasping portion is located in the inserting cavity, and the snapping end of the snapping component is in a snap fit with the clasping portion.

8. The rotating curling iron according to claim 7, wherein the snapping structure further comprises an annular housing, the annular housing is sleeved outside the connecting end, the annular housing and the connecting end together define a mounting cavity, the annular housing is provided with an dowel hole communicating with the mounting cavity, and the snapping component is movably mounted in the mounting cavity and has a locked position and an unlocked position, wherein the pressing component abuts against a side, facing away from the connecting seat, of the snapping component and is exposed through the dowel hole, wherein the connecting seat is provided with a via hole communicating the inserting cavity with the mounting cavity, and the snapping end of the snapping component extends into the inserting cavity through the via hole.

9. The rotating curling iron according to claim 8, wherein an inner side of the annular housing is provided with a position- limiting groove at a position corresponding to the via hole, the position-limiting groove penetrates through an end face of the annular housing and a cavity wall of the mounting cavity, the clasping portion protrudes from an outer peripheral surface of the inserting portion, and an end face, facing away from the heating rod, of the clasping portion is provided with a snapping hole; and when the inserting portion is inserted into the inserting cavity, the clasping portion is correspondingly inserted into the position- limiting groove, and the snapping end of the snapping component is snapped into the snapping hole.

10. The rotating curling iron according to claim 8, wherein the snapping structure comprises two said snapping components and two said pressing components, the two said snapping components are respectively arranged on two opposite sides of the connecting seat, the two said snapping components are arranged in one-to-one correspondence with the two said pressing components, and the annular housing is provided with the dowel holes corresponding to the pressing components; and/or the rotating curling iron comprises a plurality of said rotating curling iron rods, and one of the plurality of rotating curling iron rods is selectively mounted to the connecting seat.