A type of curling iron that is resistant to thermal expansion and bursting

Abstract

This utility model relates to the field of hair styling tool technology, specifically to a curling iron designed to prevent thermal expansion and bursting. It includes an outer tube containing an inner tube. The inner tube has an annular groove. The outer tube has an upper end and a lower end, with a heat dissipation hole in the center. A circular heat dissipation mesh is located outside the heat dissipation hole at the bottom of the lower end, and the mesh has several small square ventilation holes. This tightly fitted outer and inner tube structure effectively solves problems such as component separation, friction, bursting, and insulation aging caused by uneven expansion of heated gas. The annular groove on the inner tube evenly disperses internal stress caused by temperature changes, and the notches at both ends facilitate heat dissipation from the heating wire, preventing damage from localized overheating. Heat from the heating wire can be promptly discharged through the bottom heat dissipation hole and the heat dissipation mesh, reducing the risk of bursting or cracking under frequent start-stop or high-temperature operation.

Description

Technical Field

[0001] This utility model relates to the field of hair styling tools, specifically to a hair curling iron that is resistant to thermal expansion and bursting. Background Technology

[0002] With the increasing demand for beauty and hair care, curling irons are widely used as a common personal care appliance. During the operation of curling irons, heat is usually transferred to the surface of the metal heating cylinder through heating elements to shape the hair. In order to achieve rapid heating and temperature regulation, in actual use, due to the thermal expansion characteristics of the materials, when the temperature rises rapidly, components of different materials may experience stress concentration due to different degrees of expansion, leading to structural deformation or even damage.

[0003] Existing curling irons commonly suffer from structural stability issues caused by uneven thermal expansion. For example, the metal heating element and the internal support structure may separate or rub against each other due to differences in thermal expansion and contraction, affecting their service life. At the same time, excessively high local temperatures may cause the insulation layer to age and break, and even pose safety hazards. In addition, some curling irons have not fully considered the thermal stress release mechanism in their design, making the product prone to bursting and cracking under frequent start-stop or high-temperature operation, which seriously affects user experience and safety. Summary of the Invention

[0004] The purpose of this invention is to provide a hair curling iron that is resistant to thermal expansion and bursting, in order to solve the problems of existing hair curling irons not taking into account the thermal stress release mechanism and being prone to aging.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A curling iron designed to prevent thermal expansion and bursting is provided, comprising an outer tube and an inner tube inside the outer tube. An annular groove is provided on the inner tube. An upper end is provided on the upper side of the outer tube, and a lower end is provided on the lower side of the outer tube. A heat dissipation hole is provided in the middle of the lower end. A circular heat dissipation mesh is provided outside the heat dissipation hole at the bottom of the lower end. The heat dissipation mesh has several small square ventilation holes.

[0007] As a preferred embodiment of a curling iron designed to prevent thermal expansion and bursting, a heating wire is provided inside the annular groove, and the heat generated by the heating wire is dissipated outward along the annular groove through the heat dissipation holes and the plurality of vent holes of the heat dissipation mesh.

[0008] As a preferred embodiment of a curling iron designed to prevent thermal expansion and bursting, the upper end is provided with a terminal plug, which is electrically connected to the heating wire.

[0009] As a preferred embodiment of a curling iron designed to prevent thermal expansion and bursting, the inner tube has symmetrical notches on one side.

[0010] As a preferred embodiment of a curling iron designed to prevent thermal expansion and bursting, both the upper and lower ends are provided with several notches.

[0011] The beneficial effects of this utility model are:

[0012] 1. Through the tightly fitted outer and inner tube structure, the problems of component separation, friction, explosion and insulation layer aging caused by uneven thermal expansion of hot gas are effectively solved, significantly improving service life and safety. The annular groove on the inner tube can evenly disperse the internal stress caused by temperature changes, and the notches at both ends are provided to facilitate heat dissipation of the heating wire and avoid damage caused by local overheating.

[0013] 2. Heat from the heating wire can be dissipated through the bottom heat dissipation holes and heat dissipation mesh in a timely manner, reducing the risk of bursting or cracking under frequent start-stop or high-temperature operation. In addition, the heating wire design in the annular groove also improves heating uniformity and overall equipment stability, providing users with a safer and more reliable hair styling experience. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the anti-thermal expansion and explosion curling iron according to an embodiment of the present invention.

[0016] Figure 2 This is a cross-sectional structural schematic diagram of the anti-thermal expansion and bursting curling iron according to an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the explosion structure of the anti-thermal expansion and explosion curling iron according to an embodiment of the present invention.

[0018] Figure 4 This is a partial structural schematic diagram of the anti-thermal expansion and explosion curling iron according to an embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the heat dissipation mesh and terminal plug of the hair curling iron that is resistant to thermal expansion and explosion, according to an embodiment of this utility model.

[0020] Figure 6This is a schematic diagram of the heat dissipation mesh and ventilation hole structure of the anti-thermal expansion and bursting curling iron according to an embodiment of the present invention.

[0021] In the picture:

[0022] 1. Outer tube; 2. Inner tube; 3. Annular groove; 4. Upper end; 5. Lower end; 6. Heat dissipation hole; 7. Heat dissipation mesh; 71. Vent hole; 8. Terminal plug. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] like Figures 1-6As shown, this utility model provides a technical solution: a hair curling iron resistant to thermal expansion and bursting, comprising an outer tube 1, an inner tube 2 installed inside the outer tube 1, the outer wall of the inner tube 2 being in close contact with the inner wall of the outer tube 1, an annular groove 3 being formed on the outer wall of the inner tube 2, and a heating wire being installed in the annular groove 3 to improve the heating uniformity and overall stability of the hair curling iron, an upper end 4 being provided on the upper side of the outer tube 1, and a terminal plug 8 being installed on the upper end 4 through a cover, the bottom of the terminal plug 8 being electrically connected to the top of the heating wire, a lower end 5 being provided on the lower side of the outer tube 1, and notches being symmetrically formed on one side of the inner tube 2, and multiple notches being formed on both the upper end 4 and the lower end 5, a heat dissipation hole 6 being formed in the middle of the lower end 5, and a heat dissipation hole 6 at the bottom of the lower end 5. A circular heat dissipation mesh 7 is installed on the outside of the curling iron. The heat dissipation mesh 7 has multiple evenly distributed square ventilation holes 71. The heat dissipation mesh 7 prevents external interference and avoids hair from getting caught in it and clogging the ventilation holes 6. When in use, the curling iron is connected to an external power source through the terminal plug 8, which causes the heating wire to generate heat and transfer it to the outer tube 1, thereby shaping the hair. Part of the heat generated by the heating wire is dissipated from the notch of the inner tube 2 into the cavity of the inner tube 2, and a small part of the heat is directly dissipated along the annular groove 3 into the cavity of the inner tube 2. Finally, the heat is dissipated to the outside through the ventilation holes 6 and the heat dissipation mesh 7. This prevents the curling iron from bursting or cracking under frequent start-stop or high-temperature working conditions, thus improving the user experience and safety.

[0028] Working principle: When in use, the curling iron is connected to an external power source through the terminal plug 8, which causes the heating wire to generate heat and transfer it to the outer tube 1, thereby shaping the hair. Part of the heat generated by the heating wire is dissipated from the notch of the inner tube 2 into the cavity of the inner tube 2, and a small part of the heat is directly dissipated into the cavity of the inner tube 2 along the annular groove 3. Finally, the heat is dissipated to the outside through the heat dissipation holes 6 and the multiple vent holes 71 of the heat dissipation mesh 7.

[0029] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.

Claims

1. A curling iron resistant to thermal expansion and bursting, characterized in that, It includes an outer tube (1), an inner tube (2) is provided inside the outer tube (1), an annular groove (3) is provided on the inner tube (2), an upper end (4) is provided on the upper side of the outer tube (1), a lower end (5) is provided on the lower side of the outer tube (1), a heat dissipation hole (6) is provided in the middle of the lower end (5), and a circular heat dissipation mesh (7) is provided on the outside of the heat dissipation hole (6) at the bottom of the lower end (5), and the heat dissipation mesh (7) is provided with several small square ventilation holes (71).

2. The hair curling iron resistant to thermal expansion and bursting according to claim 1, characterized in that, A heating wire is provided in the annular groove (3). The heat generated by the heating wire is dissipated outward through the heat dissipation holes (6) and the ventilation holes (71) of the heat dissipation mesh (7) along the annular groove (3).

3. The hair curling iron resistant to thermal expansion and bursting according to claim 2, characterized in that, The upper end (4) is provided with a terminal plug (8), which is electrically connected to the heating wire.

4. The hair curling iron resistant to thermal expansion and bursting according to claim 1, characterized in that, The inner tube (2) has symmetrical notches on one side.

5. The hair curling iron resistant to thermal expansion and bursting according to claim 1, characterized in that, Both the upper end (4) and the lower end (5) have several notches.

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