Variable diameter structure and curling iron

Abstract

The present application relates to the technical field of hairdressing appliances, in particular to a variable diameter structure and a curling iron; comprising a plurality of radially movable heat-conducting members and a filler; the heat-conducting members have at least a first styling surface and a second styling surface with different curvatures, and the filler has a third styling surface; the plurality of heat-conducting members and the filler can form a curling barrel with a variable diameter. Compared with the prior art, when the curling barrel is at the maximum diameter, the first styling surface and the third styling surface form a first concentric circular arc surface, so that the curling barrel is circular in the maximum diameter state and no flat styling surface appears; when the curling barrel is at the minimum diameter, the adjacent two second styling surfaces of the two adjacent heat-conducting members form a second concentric circular arc surface; the two adjacent second styling surfaces can reduce the sharp styling area of the curling barrel at the minimum diameter, thereby preventing the user from forming a crease when curling, and further improving the styling effect and user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hair styling appliances, in particular to a variable diameter structure and a curling iron. BACKGROUND

[0002] As a tool for curling and shaping hair, the curling iron has a wide range of applications in the beauty and hairdressing industry and daily life. The curling iron includes a curling barrel. When in use, a hair strand is wound around the curling barrel, and the curling barrel is powered and heated at the same time, so that the heat of the curling barrel is dissipated outward from the hair wound in the inner layer, to iron and curl out the curl pattern and form the desired hairstyle.

[0003] In the prior art, such as the adjustable diameter curling barrel and curling iron disclosed in Chinese Invention CN218527966U, the outer diameter of the annular structure formed by the heat conducting pieces is increased or decreased by rotating the heat conducting pieces relative to the mounting assembly. However, after the diameter is increased by moving the multiple heat conducting pieces, there will be a blank area between the heat conducting pieces, which will cause part of the hair to be unstyled, and further cause the hair to have creases, which greatly affects the styling effect and user experience.

[0004] For example, in the curling iron of the prior application 202321496924.6, the curling barrel structure is composed of at least two curling pieces and at least two filler pieces. Although the curling pieces can form a complete circle when the curling barrel has the minimum diameter, when the curling barrel structure has the maximum diameter, the filler pieces fill the blank positions between the two curling pieces, resulting in a straight line between the two curling pieces and one filler piece. That is, the curling barrel structure at the maximum diameter is not a complete circle or close to a circle, which will cause the hair located in this part to not be curled.

[0005] Therefore, it is necessary to research a new technical solution to solve the above problems. SUMMARY

[0006] In view of the above, the present application aims to solve the technical problems of the prior art, that is, the variable diameter curling barrel structure in the prior art is prone to creases during styling, resulting in poor styling effect and user experience.

[0007] To achieve the above-mentioned purpose, the present application provides a variable diameter structure, which includes a plurality of radially movable heat conducting pieces and a filler piece. The heat conducting pieces have at least a first shaping surface and a second shaping surface with different curvatures, and the filler piece has a third shaping surface. The plurality of heat conducting pieces and the filler piece can form a curling barrel with a variable diameter.

[0008] The variable diameter structure provided by the application has the beneficial effects that, compared with the prior art, by the first shaping surface, the second shaping surface and the third shaping surface, when the curling barrel is at the maximum diameter, the first shaping surface and the third shaping surface form a first concentric circular arc surface, so that the curling barrel is circular in the maximum diameter state and no flat shaping surface appears, thereby facilitating the user to curl the hair and improving the styling effect and user experience of the user.

[0009] Meanwhile, when the curling barrel is at the minimum diameter, the adjacent two second shaping surfaces of the adjacent two heat-conducting pieces form a second concentric circular arc surface; the two adjacent second shaping surfaces can be used to reduce the sharp shaping area of the curling barrel at the minimum diameter, thereby preventing the user from forming a crease when curling the hair and further improving the styling effect and user experience of the user.

[0010] As a preferred scheme, when the curling barrel is at the maximum diameter, the first shaping surface and the third shaping surface coincide on a first virtual circle; when the curling barrel is at the minimum diameter, the adjacent two second shaping surfaces of the adjacent two heat-conducting pieces coincide on a second virtual circle.

[0011] As a preferred scheme, the curvature of the first shaping surface is a first curvature, and the curvature of the second shaping surface is a second curvature, and the first curvature is greater than the second curvature.

[0012] As a preferred scheme, the curvature of the third shaping surface is a third curvature, and the third curvature is equal to the first curvature.

[0013] As a preferred scheme, the first arc length of the first shaping surface is greater than the second arc length of the second shaping surface.

[0014] As a preferred scheme, the first shaping surface and the second shaping surface are integrally formed on the outer surface of the heat-conducting piece, the first shaping surface has one, the second shaping surface has two, and the two second shaping surfaces are arranged one by one on the two sides of the first shaping surface.

[0015] As a preferred scheme, the second curvatures of the two second shaping surfaces on the same heat-conducting piece are the same or different, and the second curvatures of the adjacent two second shaping surfaces of the adjacent two heat-conducting pieces are the same.

[0016] As a preferred scheme, the heat-conducting pieces and the filler pieces are arranged alternately, and the heat-conducting pieces can contact the filler pieces to transfer heat.

[0017] As a preferred scheme, the two sides of the filler piece are provided with first abutting portions, the first abutting portions can abut against the inner side surface of the heat-conducting piece when the diameter of the curling barrel increases, and the filler piece is hidden between the two heat-conducting pieces when the diameter of the curling barrel decreases.

[0018] The present application also provides a curler comprising the variable diameter structure, so that the curler does not have a flat styling surface when curling, thereby facilitating the user to curl the hair, and the curler does not have a sharp styling area, preventing the occurrence of creases when curling, and improving the styling effect and user experience. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a schematic diagram of a three-dimensional structure of a curler provided by the present application, wherein the curler is provided with a variable diameter structure;

[0021] Figure 2 is Figure 1 is an exploded view of a curler provided with a variable diameter structure;

[0022] Figure 3 is Figure 2 is a specific structure diagram of a first knob, an upper fixed seat and a rotating part;

[0023] Figure 4 is Figure 2 is a top view of a heat conducting part;

[0024] Figure 5 is Figure 2 is a top view of a filling part;

[0025] Figure 6 is Figure 1 is a top view of a variable diameter structure of a minimum diameter curling barrel;

[0026] Figure 7 is Figure 6 is a local enlarged view of A in

[0027] Figure 8 is Figure 1 is a top view of a variable diameter structure of a maximum diameter curling barrel;

[0028] Figure 9 is Figure 8 is a local enlarged view of B in

[0029] In the drawings, various reference signs represent:

[0030] 10, curling barrel; 11, heat conducting part;

[0031] 111, first molding surface; 112, second molding surface;

[0032] 12, filler; 121, third molding surface;

[0033] 122, first abutting portion; 13, fixing seat;

[0034] 1301, upper fixing seat; 1302, lower fixing seat;

[0035] 131, first guide groove; 14, first connecting shaft;

[0036] 15, rotating member; 151, first arc-shaped guide groove;

[0037] 16, first knob; 20, curler

[0038] 21, handle; R1, first curvature;

[0039] R2, second curvature; R3, third curvature;

[0040] L1, first arc length; L2, second arc length;

[0041] C1, first virtual circle; C2, second virtual circle;

[0042] P1, sharp molding area; P2, first blank area. DETAILED DESCRIPTION

[0043] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0044] Please refer to Figures 1 to 9 , now the variable diameter structure provided by the embodiments of the present application will be described. The variable diameter structure comprises a curler 10.

[0045] The curler 10 comprises a plurality of radially movable heat-conducting members 11 and a filler 12, the plurality of heat-conducting members 11 and the plurality of fillers 12 surround the curler 10, and the radial displacement of the plurality of heat-conducting members 11 and the plurality of fillers 12 can cause the diameter of the curler 10 to change. In some embodiments of the present application, the heat-conducting member 11 has at least a first molding surface 111 and a second molding surface 112 with different curvatures, and the filler 12 has a third molding surface 121; when the curler 10 has a maximum diameter, the first molding surface 111 and the third molding surface 121 form a first concentric circular surface; when the curler 10 has a minimum diameter, the adjacent two second molding surfaces 112 of the adjacent two heat-conducting members 11 form a second concentric circular surface.

[0046] Please refer to Figures 6 to 9 Specifically, when the curling iron 10 is at the maximum diameter, the first shaping surface 111 and the third shaping surface 121 form a first concentric circular arc surface, and at this time, the first shaping surface 111 and the third shaping surface 121 coincide on the first virtual circle C1. When the curling iron 10 is at the minimum diameter, the adjacent two second shaping surfaces 112 of the adjacent two heat-conducting pieces 11 form a second concentric circular arc surface, and at this time, the adjacent two second shaping surfaces 112 of the adjacent two heat-conducting pieces 11 coincide on the second virtual circle C2.

[0047] Since the curvatures of the first shaping surface 111 and the second shaping surface 112 are not the same, at the maximum diameter, there is a first blank area P2; the smaller the difference between the curvatures of the first shaping surface 111 and the second shaping surface 112, the smaller the first blank area P2; if the curvatures of the first shaping surface 111 and the second shaping surface 112 are the same, then at the maximum diameter, the first shaping surface 111, the second shaping surface 112 and the third shaping surface 113 can form a whole circle. However, if the curvatures of the first shaping surface 111 and the second shaping surface 112 are the same or the difference between the curvatures is small, at the minimum diameter, the sharp shaping area P1 caused by the adjacent two second shaping surfaces 112 of the two heat-conducting pieces will become larger and larger as the difference between the curvatures of the first shaping surface 111 and the second shaping surface 112 becomes smaller.

[0048] Therefore, the variable diameter structure provided by the present application, by arranging the first shaping surface 111, the second shaping surface 112 and the third shaping surface 121, when the curling iron 10 is at the maximum diameter, the first shaping surface 111 and the third shaping surface 121 form a first concentric circular arc surface, so that the curling iron 10 is circular at the maximum diameter and no flat shaping surface appears, thereby facilitating the user to curl the hair and improving the styling effect and user experience; at the same time, when the curling iron 10 is at the minimum diameter, the adjacent two second shaping surfaces 112 of the adjacent two heat-conducting pieces 11 form a second concentric circular arc surface; the two adjacent second shaping surfaces 112 can be used to reduce the sharp shaping area P1 of the curling iron 10 at the minimum diameter, so that the second shaping surface makes the curling iron 10 tend to be circular at the minimum diameter, thereby preventing the user from forming a crease when curling the hair and further improving the styling effect and user experience.

[0049] Please refer to Figures 6 to 9 More specifically, the plurality of heat-conducting pieces 11 and the filler 12 are arranged alternately in the circumferential direction; that is, along the circular direction, one heat-conducting piece 11, one filler 12, one heat-conducting piece 11, one filler 12, and so on are arranged in sequence; so that each filler 12 is located between every two heat-conducting pieces 11.

[0050] In some embodiments of the present application, the surface of the heat conducting member 11 can be in contact with the surface of the filling member 12, so that the heat conducting member 11 can be in thermal contact with the filling member 12 to transfer the heat generated by the heat conducting member 11 to the filling member 12, so that the temperature of the entire curling barrel 10 is in a balanced state, and the temperature of the heat conducting member 11 and the filling member 12 can be kept consistent.

[0051] It should be noted that the contact between the heat conducting member 11 and the filling member 12 can be that the end of the heat conducting member 11 is in contact with the end of the filling member 12, or that the inner side of the heat conducting member 11 is in contact with the outer side of the filling member 12, or that the outer side of the heat conducting member 11 is in contact with the inner side of the filling member 12, so as long as the heat conducting member 11 and the filling member 12 are in contact, the heat of the heat conducting member 11 can be transferred to the filling member 12.

[0052] In some embodiments of the present application, the two sides of the filling member 12 are provided with first abutting portions 122, when the diameter of the curling barrel 10 increases, the first abutting portions 122 can abut against the inner side of the heat conducting member 11, and when the diameter of the curling barrel 10 decreases, the filling member 12 is hidden between the two heat conducting members 11. In this way, when the diameter of the curling barrel 10 increases, the first abutting portions 122 abut against the inner side of the heat conducting member 11, so that the heat generated by the heat conducting member 11 is transferred to the filling member 12, so that the temperature of the entire curling barrel 10 is in a balanced state, and the temperature of the heat conducting member 11 and the filling member 12 can be kept consistent; when the diameter of the curling barrel 10 decreases, the filling member 12 is hidden between the two heat conducting members 11 and does not contact the heat conducting member 11, so that the filling member 12 does not participate in heat conduction when styling, thereby saving heat consumption.

[0053] Please refer to Figures 4 to 9 In some embodiments of the present application, the curvature of the first styling surface 111 is a first curvature R1, the curvature of the second styling surface 112 is a second curvature R2, and the curvature of the third styling surface 121 is a third curvature R3. The third curvature R3 is equal to the first curvature R1, so that when the curling barrel 10 is at the maximum diameter, the first styling surface 111 and the third styling surface 121 can form a circle, and in this state, the curling operation can be performed to ensure that the hair can be curled according to the first styling surface 111 and the third styling surface 121. In addition, the first arc length L1 of the first styling surface 111 is greater than the second arc length L2 of the second styling surface 112, which can shorten the size of the first blank area P2, thereby ensuring that the hair can be normally curled using the first styling surface 111 and the third styling surface 121.

[0054] If the second curvature R2 of the second styling surface 112 is the same as the first curvature R1 of the first styling surface 111, when the curling barrel 10 is in the minimum diameter state, a sharp styling area P1 will appear after the two adjacent heat-conducting members 11 are closed. At this time, when curling is performed in the minimum diameter state of the curling barrel 10, the hair will cause creases in the sharp styling area P1, which seriously affects the curling effect.

[0055] Therefore, in some embodiments of the present application, the first curvature R1 is greater than the second curvature R2. By virtue of the different curvatures of the second styling surface 112 and the first styling surface 111, when the curling barrel 10 changes to the minimum diameter state, the sharp styling area P1 can be reduced by the second styling surface 112 of the two adjacent heat-conducting members 11, so that the first styling surface 111 of each two heat-conducting members 11 can be smoothly transitioned by the second styling surface 112, that is, the first styling surface 111 and the second styling surface 112 perform curling on the hair, thereby avoiding the problem of creases in the hair caused by the sharp styling area P1.

[0056] Please refer to Figures 4 to 9 , as described above, the first styling surface 111 and the second styling surface 112 are integrally formed on the outer surface of the heat-conducting member 11, the first styling surface 111 has one, and the second styling surface 112 has two, and the two second styling surfaces 112 are arranged on the two sides of the first styling surface 111.

[0057] In some embodiments of the present application, the second curvatures R2 of the two second styling surfaces 112 on the same heat-conducting member 11 are the same, and when each two adjacent heat-conducting members 11 are closed to form the minimum diameter curling barrel 10, the second styling surfaces 112 of the plurality of heat-conducting members 11 coincide on the second virtual circle C2. When the minimum diameter curling barrel 10 is formed, the second styling surfaces 112 of the plurality of heat-conducting members 11 can be smoothly transitioned to reduce the sharp styling area P1, thereby avoiding the problem of creases in the hair caused by the sharp styling area P1.

[0058] In some embodiments of the present application, the second curvatures R2 of the two second styling surfaces 112 on the same heat-conducting member 11 are the same, and when each two adjacent heat-conducting members 11 are closed to form the minimum diameter curling barrel 10, the second styling surfaces 112 of the plurality of heat-conducting members 11 coincide on the second virtual circle C2. When the minimum diameter curling barrel 10 is formed, the second styling surfaces 112 of the plurality of heat-conducting members 11 can be smoothly transitioned to reduce the sharp styling area P1, thereby avoiding the problem of creases in the hair caused by the sharp styling area P1.

[0059] The variable diameter structure provided in the application further comprises a fixed seat 13 and a rotating part 15, the heat conducting part 11 and the filling part 12 are movably installed on the fixed seat 13 and are driven to radially displace by rotating the rotating part 15.

[0060] In some embodiments of the application, the fixed seat 13 comprises an upper fixed seat 1301 and a lower fixed seat 1302, both of which are provided with a first guide groove 131 for limiting the radial displacement path of the heat conducting part 11 and the filling part 12, the first guide groove 131 can penetrate the upper and lower surfaces of the upper fixed seat 1301, and the first guide groove 131 can penetrate the upper and lower surfaces of the lower fixed seat 1302. The heat conducting part 11 and the filling part 12 are provided with a first connecting shaft 14 inserted into the first guide groove 131, and the first connecting shaft 14 is gap-fitted with the first guide groove 131. The heat conducting part 11 and the filling part 12 both extend in the axial direction, and the axial direction of the heat conducting part 11 and the filling part 12 has the same length, so that the upper surfaces of each heat conducting part 11 and the upper surfaces of each filling part 12 are flush, and the lower surfaces of each heat conducting part 11 and the lower surfaces of each filling part 12 are flush; the first connecting shaft 14 is respectively arranged on the upper surface and the lower surface of each heat conducting part 11 and the upper surface and the lower surface of each filling part 12.

[0061] In addition, the rotating part 15 corresponds to the upper fixed seat 1301 and the lower fixed seat 1302, that is, there are two rotating parts 15, and the rotating part 15 is provided with a first arc-shaped guide groove 151 for acting on the radial displacement of the heat conducting part 11 and the filling part 12, the first arc-shaped guide groove 151 extends in the circumferential direction and is inclined from inside to outside; at the same time, the first arc-shaped guide groove 151 penetrates the upper and lower surfaces of the rotating part 15, so that the first connecting shaft 14 is inserted into the first arc-shaped guide groove 151; similarly, the first connecting shaft 14 is gap-fitted with the first arc-shaped guide groove 151. When the rotating part 15 rotates, the first connecting shaft 14 can be displaced from one end of the first arc-shaped guide groove 151 to the other end of the first arc-shaped guide groove 151, thereby driving the heat conducting part 11 and the filling part 12 to radially displace.

[0062] It should be noted that one rotating part 15 is on the upper surface of the upper fixed seat 1301, and the other rotating part 15 is on the lower surface of the lower fixed seat 1302. The upper fixed seat 1301 is rotatably installed with a first knob 16, and the first knob 16 is connected to the rotating part 15 of the upper fixed seat 1301. The user rotates the first knob 16 to simultaneously realize the radial displacement of a plurality of heat conducting parts 11 and filling parts 12, and change the diameter of the curling tube 10.

[0063] The curler 20 provided by the application comprises a handle 21 and a variable diameter structure connected with the handle 21. When the variable diameter structure is assembled, the lower fixed seat 1302 is installed on the handle 21. The curler 20 can not have a flat styling surface when curling, thereby facilitating the user to curl the hair. Meanwhile, the curler 20 can not have a sharp styling area P1, thereby preventing the curling from having a fold and improving the styling effect and user experience.

[0064] The above is only the preferred embodiment of the present application, and only the technical principle of the present application is specifically described. The description is only for explaining the principle of the present application, and cannot be explained as the limitation of the protection scope of the present application in any way. Based on the explanation herein, any modification, equivalent replacement and improvement within the spirit and principle of the present application, and other specific embodiments of the present application which can be thought by the person skilled in the art without creative labor, should be included in the protection scope of the present application.

Claims

1. A variable diameter structure, comprising a plurality of radially movable heat-conducting elements (11) and a filler (12); characterized in that: The heat-conducting component (11) has at least a first shaping surface (111) and a second shaping surface (112) with different curvatures, and the filling component (12) has a third shaping surface (121); the combined action of several heat-conducting components (11) and filling components (12) can form a hair curling tube (10) with varying diameter. When the hair curler (10) is at its maximum diameter, the first styling surface (111) and the third styling surface (121) coincide on the first virtual circle (C1); when the hair curler (10) is at its minimum diameter, the two adjacent second styling surfaces (112) of the two adjacent heat-conducting components (11) coincide on the second virtual circle (C2). The first shaped surface (111) and the second shaped surface (112) are integrally formed on the outer surface of the heat-conducting component (11). There is one first shaped surface (111) and two second shaped surfaces (112). The two second shaped surfaces (112) are set on both sides of the first shaped surface (111).

2. The variable diameter structure according to claim 1, characterized in that: The curvature of the first shaped surface (111) is a first curvature (R1), and the curvature of the second shaped surface (112) is a second curvature (R2). The first curvature (R1) is greater than the second curvature (R2).

3. The variable diameter structure according to claim 1 or 2, characterized in that: The curvature of the third shape surface (121) is the third curvature (R3), which is equal to the first curvature (R1).

4. The variable diameter structure according to claim 3, characterized in that: The first arc length (L1) of the first shaped surface (111) is greater than the second arc length (L2) of the second shaped surface (112).

5. The variable diameter structure according to claim 1 or 4, characterized in that: The second curvature (R2) of the two second shaping surfaces (112) on the same heat-conducting component (11) is the same or different, and the second curvature (R2) of the two adjacent second shaping surfaces (112) of the two adjacent heat-conducting components (11) is the same.

6. The variable diameter structure according to claim 1, characterized in that: The heat-conducting elements and fillers are arranged alternately, and the heat-conducting elements can contact the fillers to transfer heat.

7. The variable diameter structure according to claim 1 or 6, characterized in that: The filler (12) has a first abutment (122) on both sides. When the diameter of the hair curler (10) increases, the first abutment (122) can abut against the inner side of the heat conductor (11); when the diameter of the hair curler (10) decreases, the filler (12) is hidden between the two heat conductors (11).

8. A hair curling iron, characterized in that: Includes the variable diameter structure as described in any one of claims 1-7.

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