An equidistant opening and closing mechanism for a heat-generating element of a curling iron

Abstract

The application provides an equidistance opening and closing mechanism for a heating component of a curling iron, which comprises a fixed shell, a first motor, a second motor and a variable-diameter heating assembly. One end of the fixed shell is provided with a receiving cavity. The rotating shaft of the first motor penetrates through the fixed shell and extends to the inside of the variable-diameter heating assembly. The variable-diameter heating assembly is in a cylindrical structure. The rotating shaft of the first motor is coaxial with the variable-diameter heating assembly. The rotating shaft of the first motor is in transmission connection with the inside of the variable-diameter heating assembly. When the second motor stops working, the rotating of the rotating shaft of the first motor can drive the outside structure of the variable-diameter heating assembly to expand equidistantly outward or contract equidistantly inward. The application can conveniently and quickly control the variable-diameter heating assembly to change the diameter. Meanwhile, the variable-diameter heating assembly can still stably maintain the shape after the diameter changes, which is convenient for meeting the needs of users.

Description

Technical Field

[0001] This invention relates to the field of beauty equipment technology, and in particular to an equidistant opening and closing mechanism for the heating element of a hair curler. Background Technology

[0002] Curling irons are one of the most commonly used devices in beauty and hairdressing. They are popular because they are portable and easy to use. Their main components are a handle and a heated barrel. The design of the curling iron uses a circuit panel to control the temperature, improve the hair protein structure to create curls, and protect the hair quality during the curling process.

[0003] Existing curling irons are usually fixed to the barrel. When users curl their hair, they manually pull the curling iron down so that the hair is wrapped around the heating rod under the downward force and curled along the curved surface of the heating rod. However, most curling irons have a fixed diameter heating rod, which means that the diameter of the heating rod cannot be adjusted, making it difficult to meet users' needs for curled hairstyles.

[0004] A hair curler with patent number CN105193061B features a variable-diameter heating rod, meaning the diameter of the heating rod can be adjusted to suit the user's desired curl shape. However, this variable-diameter heating rod is manually adjustable. An adjustment wheel rotates, driving a small gear that in turn rotates the central shaft of the heating rod, causing multiple heating elements to expand outwards or contract inwards. Whether this manually adjustable structure can maintain its expanded shape is determined by the fixing force of the adjustment wheel. During use, the heating elements are prone to retraction. When the user pulls down the curler after curling the hair, the hair, under the downward force, curls towards the heating rod, and the multiple heating elements fail to maintain their original expanded shape, passively contracting. This causes the diameter of the heating rod to continuously decrease as the curler is pulled down, failing to meet the user's needs. Furthermore, the manual adjustment method is time-consuming and laborious, hindering user convenience.

[0005] Therefore, it is necessary to propose an equidistant opening and closing mechanism for the heating element of a hair curler to improve the convenience for users to adjust the diameter of the heating rod, while also preventing the heating rod from being passively retracted during use. Summary of the Invention

[0006] To address the aforementioned issues, this invention proposes an equidistant opening and closing mechanism for the heating element of a hair curler to improve the ease with which users can adjust the diameter of the heating rod, while also preventing the heating rod from passively closing during use.

[0007] This invention is achieved through the following technical solution:

[0008] This invention proposes an equidistant opening and closing mechanism for the heating element of a hair curler, comprising a fixed shell, a first motor, a second motor, and a variable-diameter heating assembly. One end of the fixed shell has a receiving cavity. One end of the variable-diameter heating assembly is rotatably connected to the fixed shell and housed within the receiving cavity, with its outer periphery forming a transmission connection with the rotating shaft of the second motor. The second motor is fixedly connected to one side of the fixed shell, and the first motor is fixedly connected to the other end of the fixed shell. The rotating shaft of the first motor passes through the fixed shell and extends into the interior of the variable-diameter heating assembly. The variable-diameter heating assembly has a cylindrical structure. The rotating shaft of the first motor is coaxial with the variable-diameter heating assembly, and forms a transmission connection with the interior of the variable-diameter heating assembly. When the second motor stops operating, the rotation of the rotating shaft of the first motor can drive the outer structure of the variable-diameter heating assembly to expand outwards or contract inwards at equal intervals.

[0009] Furthermore, the variable diameter heating assembly includes a heating rod body and a connecting assembly. The connecting assembly is rotatably connected to the fixed shell and its outer periphery is connected to the rotating shaft of the second motor. The rotating shaft of the first motor passes through the connecting assembly and extends into the heating rod body, forming a transmission connection with the interior of the heating rod body. Both the connecting assembly and the heating rod body are cylindrical structures. The heating rod body passes through the connecting assembly and is coaxial with the connecting assembly. The heating rod body and the connecting assembly form a sliding connection perpendicular to the axial direction.

[0010] Furthermore, the heating rod body includes multiple heating arc plates, which are evenly distributed circumferentially to form a cylindrical structure. Each heating arc plate is slidably connected to the connecting assembly. The rotating shaft of the first motor extends to the center of the cylindrical structure formed by the multiple heating arc plates and forms a transmission connection with each of the multiple heating arc plates.

[0011] Furthermore, the heating arc plate is provided with a transmission plate, which is perpendicular to the heating arc plate. Multiple transmission plates are stacked sequentially and distributed alternately along the axis of the heating rod. The rotating shaft of the first motor passes through multiple transmission plates sequentially and forms a transmission connection with each transmission plate.

[0012] Furthermore, the transmission plate is provided with a through groove, through which the shaft of the first motor passes and forms a transmission connection with the groove wall.

[0013] Furthermore, a rack is provided on the groove wall of the through groove, and a gear column is provided on the shaft of the first motor, the gear column being meshed with the rack.

[0014] Furthermore, the connecting assembly includes a rotating ring and a fixing member. The fixing member is coaxially fixedly connected inside the rotating ring. The rotating ring is rotatably connected to the fixed shell and forms a transmission connection with the rotating shaft of the second motor. The rotating shaft of the first motor passes through the fixing member. The fixing member is provided with sliding grooves of the same number as the heating arc plates. The multiple sliding grooves are evenly distributed circumferentially, and each of the multiple sliding grooves corresponds to a multiple of the heating arc plates. Each of the multiple heating arc plates forms a sliding connection perpendicular to the axial direction with the fixing member, and the heating arc plates pass through the sliding grooves.

[0015] Furthermore, the inner wall of the rotating ring is circumferentially distributed with a plurality of snap-fit ​​protrusions, and the upper surface of the fixing member is circumferentially distributed with the same number of snap-fit ​​grooves as the snap-fit ​​protrusions. The plurality of snap-fit ​​protrusions correspond one-to-one with the plurality of snap-fit ​​grooves, and the snap-fit ​​protrusions are received in the snap-fit ​​grooves.

[0016] Furthermore, a toothed ring is provided on the outer periphery of the rotating ring, and a gear is provided on the rotating shaft of the second motor, the gear meshing with the toothed ring.

[0017] Furthermore, the variable diameter heating assembly also includes a protective end assembly, which is located on the end of the heating rod body away from the connecting assembly and forms a sliding connection with the heating rod body perpendicular to the axial direction. A portion of the protective end assembly extends into the heating rod body.

[0018] The beneficial effects of this invention are:

[0019] This invention employs a fixed shell, a first motor, a second motor, and a variable-diameter heating element in synergy. The user can control the first motor to rotate via a button switch on the curling iron, thereby controlling the diameter of the variable-diameter heating element. When the diameter of the variable-diameter heating element is changing, the second motor must stop operating, keeping the variable-diameter heating element stationary relative to the fixed shell. The rotation of the first motor's shaft causes the outer structure of the variable-diameter heating element to expand outwards or contract inwards at equal intervals, thus changing the overall diameter of the variable-diameter heating element. The user can easily change the diameter of the variable-diameter heating element according to their needs, facilitating quick adjustment and making it convenient and practical.

[0020] The variable diameter heating component of this invention employs a first motor shaft rotation that simultaneously drives multiple heating arc plates to slide at equal distances perpendicular to the axial direction, allowing the variable diameter heating component to maintain its shape even after the diameter changes. When the first motor shaft rotates, the gear column simultaneously drives the transmission plates on the multiple heating arc plates to move, and the multiple heating arc plates slide at equal distances along a direction perpendicular to the axial direction. When the first motor stops rotating, the first motor shaft remains in its original position. Since the first motor is a high-torque reduction motor, its shaft cannot be rotated manually. That is, after the multiple heating arc plates are spread out, they cannot be pulled together by the curling force of the hair, which helps to maintain the shape of the variable diameter heating component and easily meets the needs of users.

[0021] In summary, the equidistant opening and closing mechanism for the heating element of the curling iron uses a convenient and quick control method to change the diameter of the variable-diameter heating component; at the same time, the variable-diameter heating component can still stably maintain its shape after the diameter changes, which can easily meet the needs of users. Attached Figure Description

[0022] Figure 1 This is an exploded view of the equidistant opening and closing mechanism for the heating element of a hair curler according to the present invention;

[0023] Figure 2 This is an overall schematic diagram of the equidistant opening and closing mechanism for the heating element of a hair curler according to the present invention;

[0024] Figure 3 This is a schematic diagram of the equidistant opening and closing mechanism for the heating element of a hair curler according to the present invention installed on a hair curler;

[0025] Figure 4 This is an exploded view of the variable-diameter heating assembly of the equidistant opening and closing mechanism for the heating element of a hair curler according to the present invention.

[0026] Figure 5 This is an exploded view of the heating rod body of the equidistant opening and closing mechanism for the heating element of a hair curler according to the present invention;

[0027] Figure 6 An exploded view of the connecting assembly of the equidistant opening and closing mechanism for the heating element of a hair curler according to the present invention;

[0028] Figure 7 This is a schematic diagram of the second motor of the equidistant opening and closing mechanism for the heating element of a hair curler according to the present invention;

[0029] Figure 8 This is a schematic diagram of the first motor of the equidistant opening and closing mechanism for the heating element of a hair curler according to the present invention;

[0030] Figure 9 for Figure 5 A magnified view of a portion labeled A;

[0031] Figure 10 This is a schematic diagram of the heating rod body of the equidistant opening and closing mechanism for the heating component of a hair curler according to the present invention.

[0032] The attached figures are labeled as follows:

[0033] Fixed shell 1, storage cavity 11;

[0034] First motor 2, gear column 21;

[0035] Third motor 3, gear 31;

[0036] Variable diameter heating element 4, heating rod body 41, heating arc plate 4111, transmission plate 4111, through groove 41111, rack 41112, connecting component 42, rotating ring 421, snap-fit ​​boss 4211, gear ring 4212, fixing component 422, sliding groove 4221, snap-fit ​​groove 4222, protective end component 43, fixed end 431, mounting post 432. Detailed Implementation

[0037] To more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0038] Please refer to Figures 1-10 This invention proposes an equidistant opening and closing mechanism for the heating element of a hair curler, comprising a fixed shell 1, a first motor 2, a second motor 3, and a variable-diameter heating component 4. One end of the fixed shell 1 is provided with a receiving cavity 11. One end of the variable-diameter heating component 4 is rotatably connected to the fixed shell 1 and housed in the receiving cavity 11, and its outer periphery is connected to the rotating shaft of the second motor 3. The second motor 3 is fixedly connected to one side of the fixed shell 1, and the first motor 2 is fixedly connected to the other end of the fixed shell 1. The rotating shaft of the first motor 2 passes through the fixed shell 1 and extends into the interior of the variable-diameter heating component 4. The variable-diameter heating component 4 has a cylindrical structure. The rotating shaft of the first motor 2 is coaxial with the variable-diameter heating component 4, and the rotating shaft of the first motor 2 is connected to the interior of the variable-diameter heating component 4. When the second motor 3 stops operating, the rotation of the rotating shaft of the first motor 2 can drive the outer structure of the variable-diameter heating component 4 to expand outward at equal intervals or contract inward at equal intervals.

[0039] In this embodiment:

[0040] The fixed housing 1 is used to provide a stable mounting structure for the first motor 2, the second motor 3, and the variable diameter heating assembly 4;

[0041] The receiving cavity 11 provides a space for the variable diameter heating element 4 to be placed inside the fixed shell 1;

[0042] The first motor 2 is used to control the diameter change of the variable diameter heating component 4;

[0043] The second motor 3 is used to drive the variable diameter heating component 4 to rotate relative to the fixed shell 1;

[0044] The variable diameter heating element 4 is used to change the diameter and generate heat to curl the hair.

[0045] Specifically, the equidistant opening and closing mechanism for the heating element of the hair curler is installed on the barrel of the hair curler. The barrel of the hair curler is also provided with a curling groove. The equidistant opening and closing mechanism for the heating element of the hair curler is housed in the curling groove. The first motor 2, the second motor 3, and the variable diameter heating component 4 are all electrically connected to the circuit board inside the hair curler.

[0046] When the diameter of the variable-diameter heating component 4 is changed, the second motor 3 needs to stop operating, so that the variable-diameter heating component 4 is stationary relative to the fixed shell 1. The rotation of the shaft of the first motor 2 can drive the outer structure of the variable-diameter heating component 4 to expand outward or contract inward at equal intervals, so as to change the overall diameter of the variable-diameter heating component 4. Users can change the diameter of the variable-diameter heating component 4 at any time according to their own needs, which is conducive to quick adjustment and convenient for practical use.

[0047] Furthermore, the variable-diameter heating element 4 includes a heating rod body 41 and a connecting component 42. The connecting component 42 is rotatably connected to the fixed shell 1 and its outer periphery is connected to the shaft of the second motor 3. The shaft of the first motor 2 passes through the connecting component 42 and extends into the heating rod body 41, forming a transmission connection with the interior of the heating rod body 41. Both the connecting component 42 and the heating rod body 41 are cylindrical structures. The heating rod body 41 passes through the connecting component 42 and is coaxial with the connecting component 42. The heating rod body 41 and the connecting component 42 form a sliding connection perpendicular to the axial direction. The heating rod body 41 includes multiple heating arc plates 411, which are evenly distributed circumferentially to form a cylindrical structure. All heating arc plates 411 are slidably connected to the connecting component 42. The shaft of the first motor 2 extends... The first motor 2 is connected to the center of the cylinder formed by multiple heating arc plates 411 and is driven by each heating arc plate 411. A transmission plate 4111 is provided on the heating arc plate 411, and the transmission plate 4111 is perpendicular to the heating arc plate 411. Multiple transmission plates 4111 are stacked in sequence and distributed alternately along the axis of the heating rod body 41. The shaft of the first motor 2 passes through multiple transmission plates 4111 in sequence and is driven by each transmission plate 4111. A through groove 41111 is provided on the transmission plate 41111. The shaft of the first motor 2 passes through the through groove 41111 and is driven by the groove wall of the through groove 41111. A rack 41112 is provided on the groove wall of the through groove 41111. A gear column 21 is provided on the shaft of the first motor 2 and is meshed with the rack 41112.

[0048] In this embodiment:

[0049] The heating rod 41 is used for heating, and can also change the size of its own diameter;

[0050] Heating arc plate 411 is used for heating. There are 3 heating arc plates 411 in total, or more than 3, but at least 2. The front side of the next heating arc plate 411 is hidden inside the rear side of the previous heating arc plate 411. The 3 heating arc plates 411 are connected end to end in such a way that the front side of the next heating arc plate 411 is hidden inside the rear side of the previous heating arc plate 411 to form a columnar structure.

[0051] The transmission plate 4111 is used to provide a structure for the heating arc plate 411 to be connected to the shaft of the first motor 2 for transmission.

[0052] The through slot 41111 is used to provide a space for the shaft of the first motor 2 to pass through the transmission plate 4111;

[0053] Rack 41112 is used for meshing connection with gear post 21;

[0054] The connecting component 42 is used to provide a sliding connection structure for multiple heating arc plates 411;

[0055] The gear column 21 is used to drive the transmission plate 4111 to move;

[0056] Specifically, when the shaft of the first motor 2 is connected to the groove wall of the through groove 41111, the shaft can also be in contact with the flexible groove wall. The rotation of the shaft of the first motor 2 drives the groove wall of the through groove 41111 to move, thereby driving the transmission plate 4111 to move.

[0057] When the shaft of the first motor 2 rotates in the forward direction, the gear 21 simultaneously drives the transmission plates 4111 on multiple heating arc plates 411 to move in the opposite direction of the axial direction. The multiple heating arc plates 411 then slide equidistantly in the opposite direction perpendicular to the axial direction. That is, the diameter of the heating rod 41 increases at this time. When the shaft of the first motor 2 rotates in the reverse direction, the gear 21 simultaneously drives the transmission plates 4111 on multiple heating arc plates 411 to move in the axial direction. The multiple heating arc plates 411 then slide equidistantly in the direction perpendicular to the axial direction. At this time, the diameter of the heating rod 41 becomes smaller. When the first motor 2 stops rotating, the shaft of the first motor 2 remains in its original position. Since the first motor 2 is a high-torque reduction motor, its shaft cannot be rotated manually. That is, after the multiple heating arc plates 411 are spread out, the shaft of the first motor 2 can maintain the original position of the transmission plate 4111, so that the multiple heating arc plates 411 are fixed at the same time. The heating arc plates 411 cannot be driven by the curling force of the hair to retract into each other, which is conducive to maintaining the shape of the variable diameter heating component and can meet the needs of users.

[0058] Furthermore, the connecting assembly 42 includes a rotating ring 421 and a fixing member 422. The fixing member 422 is coaxially fixedly connected inside the rotating ring 421. The rotating ring 421 is rotatably connected to the fixed shell 1 and forms a transmission connection with the rotating shaft of the second motor 3. The rotating shaft of the first motor 2 passes through the fixing member 422. The fixing member 422 is provided with sliding grooves 4221 in the same number as the heating arc plates 411. The multiple sliding grooves 4221 are evenly distributed circumferentially, and each of the multiple sliding grooves 4221 corresponds one-to-one with a multiple of the heating arc plates 411. Each of the multiple heating arc plates 411 forms a transmission connection with the fixing member 422. A sliding connection perpendicular to the axial direction is formed, with the heating arc plate 411 passing through the sliding groove 4221; multiple snap-fit ​​protrusions 4211 are evenly distributed circumferentially on the inner wall of the rotating ring 421, and snap-fit ​​grooves 4222 of the same number as the snap-fit ​​protrusions 4211 are evenly distributed circumferentially on the upper surface of the fixing member 422. The multiple snap-fit ​​protrusions 4211 correspond one-to-one with the multiple snap-fit ​​grooves 4222, and the snap-fit ​​protrusions 4211 are received in the snap-fit ​​grooves 4222; a toothed ring 4212 is provided on the outer circumference of the rotating ring 421, and a gear 31 is provided on the shaft of the second motor 3, which meshes with the toothed ring 4212.

[0059] In this embodiment:

[0060] The rotating ring 421 provides a stable mounting structure for the fixing member 422 and also drives the fixing member 422 to rotate;

[0061] The snap-fit ​​boss 4211 is used to provide a structure for the rotating ring 421 to be fixedly connected to the fastener 422;

[0062] The toothed ring 4212 is used to provide a structure for the rotating ring 421 to form a transmission connection with the third motor 3;

[0063] The fastener 422 provides a support structure for the heating rod body 41 and also provides a sliding support structure for the multiple heating arc plates 411;

[0064] The sliding groove 4221 is used to provide a sliding space for the heating arc plate 411;

[0065] The snap-fit ​​slot 4222 is used to provide a space for the snap-fit ​​boss 4211 to be fixedly placed;

[0066] Gear 31 is used for meshing with gear ring 4212;

[0067] Specifically, when the gear column 21 rotates, multiple heating arc plates 411 are simultaneously driven and slide relative to the fixed member 422. When the heating arc plates 411 slide, the fixed member 422 acts as a sliding support. The transmission plate 4111 on the heating arc plate 411 is located away from the fixed member 422. When the gear column 21 rotates, the transmission plate 4111 is pushed by a force. Relative to the heating arc plate 411, without the balancing support of the fixed member 422, the heating arc plate 411 would be difficult to slide or slide unevenly. With the balancing support of the fixed member 422, multiple heating arc plates 411 can slide smoothly.

[0068] Furthermore, the variable diameter heating assembly 4 also includes a protective end assembly 43, which is located on the end of the heating rod body 41 away from the connecting assembly 42 and forms a sliding connection with the heating rod body 41 perpendicular to the axial direction. A portion of the protective end assembly 43 extends into the heating rod body 41.

[0069] In this embodiment:

[0070] The protective end component 43 is used to prevent the user's hair from accidentally entering the heating rod body 41;

[0071] Specifically, the protective end assembly 43 includes a fixed end 431 and a mounting post 432. The fixed end 431 is fixedly inserted into one end of the mounting post 432, which is housed between three heating arc plates 411. The fixed end 431 is slidably connected to one end of each of the three heating arc plates 411. The fixed end 431 is used to maintain the stability of the three heating arc plates 411 when they expand outward or contract inward. The mounting post 432 provides a fixed structure for the fixed end 431. At the same time, the fixed end 431 also blocks the gaps at the ends of the three heating arc plates 411 to prevent hair from accidentally entering the gaps. When the first motor 2 rotates, the three heating arc plates 411 are moved simultaneously. The three heating arc plates 411 can expand outward or contract inward at equal intervals. At this time, the overall diameter of the heating rod 41 changes, and the size of the heating rod 41 can be controlled according to the user's needs.

[0072] Of course, the present invention may have many other embodiments. Based on this embodiment, other embodiments obtained by those skilled in the art without any creative effort are all within the scope of protection of the present invention.

Claims

1. An equidistant opening and closing mechanism for the heating element of a hair curler, characterized in that, The device includes a fixed housing, a first motor, a second motor, and a variable-diameter heating element. One end of the fixed housing has a receiving cavity. One end of the variable-diameter heating element is rotatably connected to the fixed housing and housed within the receiving cavity, with its outer periphery connected to the shaft of the second motor. The second motor is fixedly connected to one side of the fixed housing, and the first motor is fixedly connected to the other end of the fixed housing. The shaft of the first motor passes through the fixed housing and extends into the interior of the variable-diameter heating element. The variable-diameter heating element has a cylindrical structure. The shaft of the first motor is coaxial with the variable-diameter heating element and forms a transmission connection with the interior of the variable-diameter heating element. When the second motor stops operating, the rotation of the shaft of the first motor can cause the outer structure of the variable-diameter heating element to expand outwards or contract inwards at equal intervals. The variable-diameter heating element includes a heating rod and a connecting assembly. The connecting assembly is rotatably connected to the fixed housing and its outer periphery is connected to the shaft of the second motor. The rotating shaft of the motor forms a transmission connection. The rotating shaft of the first motor passes through the connecting assembly and extends into the heating rod body, forming a transmission connection with the interior of the heating rod body. Both the connecting assembly and the heating rod body are cylindrical structures. The heating rod body passes through the connecting assembly and is coaxial with the connecting assembly. The heating rod body and the connecting assembly form a sliding connection perpendicular to the axial direction. The heating rod body includes multiple heating arc plates, which are evenly distributed circumferentially to form a cylindrical structure. Each heating arc plate is slidably connected to the connecting assembly. The rotating shaft of the first motor extends to the center of the cylindrical structure formed by the multiple heating arc plates and forms a transmission connection with each of the multiple heating arc plates. A transmission plate is provided on each heating arc plate. The transmission plate is perpendicular to the heating arc plate. Multiple transmission plates are stacked sequentially and staggered along the axial direction of the heating rod body. The rotating shaft of the first motor passes through multiple transmission plates sequentially and forms a transmission connection with each of the transmission plates. The variable-diameter heating assembly further includes a protective end assembly. The protective end assembly is located on the end of the heating rod body away from the connecting assembly and forms a sliding connection with the heating rod body perpendicular to the axial direction. A portion of the protective end assembly extends into the heating rod body. The protective end assembly includes a fixed end and a mounting post. The fixed end is fixedly inserted into one end of the mounting post, and the mounting post is housed between three heating arc plates. The fixed end is slidably connected to one end of each of the three heating arc plates. The transmission plate is provided with a through groove, the shaft of the first motor passes through the through groove and forms a transmission connection with the groove wall, and a rack is provided on the groove wall, and a gear column is provided on the shaft of the first motor, the gear column meshing with the rack.

2. The equidistant opening and closing mechanism for the heating element of a hair curler according to claim 1, characterized in that, The connecting assembly includes a rotating ring and a fixing member. The fixing member is coaxially fixedly connected inside the rotating ring. The rotating ring is rotatably connected to the fixed shell and forms a transmission connection with the rotating shaft of the second motor. The rotating shaft of the first motor passes through the fixing member. The fixing member has sliding grooves in the same number as the heating arc plates. The multiple sliding grooves are evenly distributed circumferentially. Each of the multiple sliding grooves corresponds to a single heating arc plate. Each of the multiple heating arc plates forms a sliding connection perpendicular to the axial direction with the fixing member. The heating arc plates pass through the sliding grooves.

3. The equidistant opening and closing mechanism for the heating element of a hair curler according to claim 2, characterized in that, The inner wall of the rotating ring is evenly distributed with multiple snap-fit ​​protrusions in the circumferential direction, and the upper surface of the fixing member is evenly distributed with snap-fit ​​grooves in the circumferential direction, the same number as the snap-fit ​​protrusions. Each snap-fit ​​protrusion corresponds to one of the snap-fit ​​grooves, and the snap-fit ​​protrusions are received in the snap-fit ​​grooves.

4. The equidistant opening and closing mechanism for the heating element of a hair curler according to claim 2, characterized in that, The outer circumference of the rotating ring is provided with a toothed ring, and the shaft of the second motor is provided with a gear, which meshes with the toothed ring.

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