Heating body structure applied to hairdressing instrument and hair curler thereof

Abstract

The utility model relates to the technical field of hairdressing, in particular to a heating body structure applied to a hairdressing instrument and a hair curler of the heating body structure, which comprises a base layer, a heat insulation layer, a heating film, a graphene heat conducting sheet, a metal heat conducting sheet and heat conducting parent cloth which are sequentially attached, the metal heat-conducting sheet is wound to the back of the base layer through the bending fixing part, so that a pressing force is formed between the metal heat-conducting sheet and the base layer to press and fix the heat-insulating layer, the heating film and the graphene heat-conducting sheet, and the two sides of the heat-conducting parent cloth are wound to the back of the base layer along the bending fixing part respectively; according to the structure, complete and seamless permeation of the outer surface can be achieved, the situation of layering or cracking after repeated use can be prevented through certain strain capacity of metal, pressing force is generated through metal materials, the heating film and the graphene heat-conducting piece can be more tightly pressed, and the heating effect is better. Therefore, the heat transfer effect is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hair styling, in particular to a heating element structure applied to a hair styling instrument and a hair curler. Background Art

[0002] In the hair styling industry, in order to achieve an ideal hairstyle shaping effect, heating the hair is a common and crucial step. Traditional hair styling heating tools, such as straighteners and curling irons, often have certain limitations in terms of heating performance and hair protection. In the past, simple heating element designs may have led to uneven heating, causing the hair to be overheated in some areas and underheated in others. This not only affects the final hairstyle effect but also easily damages the hair, such as making it dry, split, or even break. With the continuous progress of technology, people's requirements for hair styling tools are getting higher and higher. In order to improve the heating effect and protect the hair, a heating hair-friendly module with a composite layer has emerged.

[0003] For example, early straighteners may have only used a single metal heating plate. The heat transfer is direct but difficult to control, easily causing local high temperatures. The new composite layer heating module may combine different materials, such as ceramics, metals, and heat insulation materials. The ceramic layer can provide uniform heating, the metal layer ensures rapid temperature rise, and the heat insulation material prevents excessive heat dissipation and protects the user from being scalded at the same time.

[0004] Another example is a curling iron. Traditional heating methods may cause the hair to lose elasticity and luster due to uneven heating during the curling process. A curling iron with a composite layer heating module can better control the temperature distribution, making the hair more evenly heated during curling, thus maintaining the health and beauty of the hair.

[0005] This heating module with a composite layer setting for heating and hair-friendly effect aims to solve the problems existing in traditional heating tools and provide consumers with a more efficient, safer, and hair-protecting hair styling experience.

[0006] In traditional composite layers of this kind, they are mainly combined together by adhesive bonding or mechanical connection. When using the adhesive bonding method, there will be material compatibility problems, and the thermal expansion coefficients of different materials may be different. For example, metals and ceramics expand to different extents when heated, which may cause stress between the composite layers and even delamination or cracking after multiple uses. When using the mechanical connection method, generally, the composite layers are connected together by mechanical means such as bolts, rivets, and welding, which will have problems such as difficult sealing or stress concentration. Mechanical connection points are usually difficult to be completely sealed. In hair styling applications, moisture, chemicals, or hair care products may penetrate into the interior through the connection gaps, causing corrosion, short circuits, or other damages. This will not only affect the performance and lifespan of the heating module but also pose potential safety hazards. And local stress concentration will occur at the mechanical connection points. For example, when using bolts or rivets for connection, the stress around the holes may be significantly higher than other areas. During long-term heating and cooling cycles, this may lead to material fatigue and premature failure. Cracks are likely to occur in the stress concentration areas and may spread along the composite layers, affecting the structural integrity of the entire heating module.

[0007] In view of this, it is necessary to propose an improved technical solution to solve the above problems. Summary of the Utility Model

[0008] The utility model aims to provide a technical solution that can solve the above problems to overcome the above deficiencies.

[0009] A heating element structure applied to a hair styling instrument includes a base layer, a heat insulation layer, a heating film, a graphene heat conduction sheet, a metal heat conduction sheet, and a heat conduction and hydrophilic cloth that are sequentially adhered. Bent fixing parts are respectively extended and arranged on both sides of the metal heat conduction sheet. The metal heat conduction sheet is wound around the back of the base layer through the bent fixing parts, so that a pressing force is formed between the metal heat conduction sheet and the base layer to press and fix the heat insulation layer, the heating film, and the graphene heat conduction sheet. Both sides of the heat conduction and hydrophilic cloth are respectively wound around the back of the base layer along the bent fixing parts.

[0010] Preferably, the base layer includes a back plate part and an arc surface part formed on the back plate part, and there is a spacing adapted to the total thickness of the heat insulation layer, the heating film, and the graphene heat conduction sheet between both sides of the back plate part and both sides of the arc surface part. The heat insulation layer, the heating film, and the graphene heat conduction sheet are sequentially attached to the arc surface part. The metal heat conduction sheet is attached to the graphene heat conduction sheet, and the bent fixing parts are wound around the back of the back plate part along both sides of the back plate part.

[0011] Preferably, the heat insulation layer is made of aerogel material.

[0012] Preferably, the heating film includes a flexible electrothermal film and a high-temperature resistant insulating film attached to the outer surface of the flexible electrothermal film, and the flexible electrothermal film extends with electrode ends extending beyond the high-temperature resistant insulating film.

[0013] Preferably, the thermally conductive contact pad is made of high-temperature nylon cloth material.

[0014] Preferably, the thermally conductive film comprises a Teflon layer and a high temperature resistant resin layer coated on the outside of the Teflon layer.

[0015] A curling iron comprises a gripping body, a heated curling rod connected to one end of the gripping body, and a hairpin elastically hinged at the end of the gripping body and forming a hair clamping structure with the heated curling rod. The heated curling rod comprises two of the above-mentioned heating element structures, which are bonded to each other through a back plate to form a rod-shaped structure. The gripping body is integrated with a power supply control circuit, and the gripping body is electrically connected to a heating film through the power supply control circuit.

[0016] Preferably, a fixed socket is provided at the end of the grip body, the heating curling rod is fixedly connected to the socket, and a fixing cap is fixedly connected to the other end of the heating curling rod.

[0017] Preferably, a reinforcement strip is formed on the back side of the back panel, and the two heating element structures are abutted against each other through the reinforcement strip. A sealing strip extending to the fixed socket and the fixed cap is also provided between the back panels of the two heating element structures, and the two heating elements are sealed together through the sealing strip.

[0018] Preferably, the sealing strip comprises a fixing portion and a blocking portion, the fixing portion closely abuts against the back plate portions of the two heating element structures, and the blocking portion closely abuts against the heat conductive contact extending to the back of the back plate portion.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] A bending fixing part is extended based on the heat-conducting metal sheet, and is wound around the back of the substrate through the bending fixing part, so that a pressing force can be generated between the bending fixing part and the substrate to press and fix the heat insulation layer, the heating film and the graphene heat-conducting sheet. Through this setting, compared with the traditional method of only using adhesive bonding or mechanical connection, or the method of combining adhesive bonding and mechanical connection, the structure can not only achieve complete seamless penetration of the outer surface, but also prevent delamination or cracking after repeated use through the certain strain capacity of the metal itself, and generate a pressing force through the metal material, so that the heating film and the graphene heat-conducting sheet can be pressed more tightly, thereby greatly improving the heat transfer effect; in addition, the cloth material is used to fit the surface of the metal heat-conducting sheet in a fitting manner, and also extends to the back of the substrate. After installation, the heat-conducting intimate cloth is placed inside the hairdressing instrument, and there will be no warping due to insufficient viscosity, thereby greatly improving the durability of the heating body structure.

[0021] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 is an exploded structural schematic diagram of the heating element structure in the present utility model;

[0024] Figure 2 is an end face structural schematic diagram of the heating element structure in the present utility model;

[0025] Figure 3 is a structural schematic diagram of the hair curler in the present utility model;

[0026] Figure 4 is a disassembled structural schematic diagram of the hair curler in the present utility model;

[0027] Figure 5 is an end face structural schematic diagram of the heated hair curling rod in the present utility model;

[0028] Figure 6 is the present utility model Figure 5 structural schematic diagram at position A.

[0029] The reference numerals and names in the drawings are as follows:

[0030] Base layer 10, back plate portion 11, arc surface portion 12, reinforcing strip 13, sealing strip 14, fastening portion 141, blocking portion 142, heat insulation layer 20, heating film 30, graphene heat conducting sheet 40, metal heat conducting sheet 50, bending and fixing portion 51, heat conducting and skin-friendly cloth 60, holding main body 70, fixed socket 71, fixed cap 72, hairpin 73, heated hair curling rod 80. Detailed Embodiments

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0032] Please refer to Figures 1-6, in the embodiment of the present utility model, a heating element structure applied to a hair styling instrument includes a base layer 10, a heat insulation layer 20, a heating film 30, a graphene heat conducting sheet 40, a metal heat conducting sheet 50, and a heat conducting hair-friendly cloth 60 that are sequentially adhered. Bent fixing parts 51 are respectively extended and arranged on both sides of the metal heat conducting sheet 50. The metal heat conducting sheet 50 is wound around the back of the base layer 10 through the bent fixing parts 51, so that a pressing force is formed between the metal heat conducting sheet 50 and the base layer 10 to press and fix the heat insulation layer 20, the heating film 30, and the graphene heat conducting sheet 40. Both sides of the heat conducting hair-friendly cloth 60 are wound around the back of the base layer 10 along the bent fixing parts 51.

[0033] In the above technical solution, by adopting a heating element structure composed of a base layer 10, a heat insulation layer 20, a heating film 30, a graphene heat conducting sheet 40, a metal heat conducting sheet 50, and a heat conducting hair-friendly cloth 60, high-temperature resistant glue can be used for bonding between adjacent layers. The base layer 10 plays a role in determining the size, shape, and fixed installation of the heating element structure. The heat insulation layer is used to isolate or reflect heat, so that the heat can act on the hair more effectively. Generally, the heat insulation layer 20 is made of aerogel material; the heating film 30 plays a role in generating heat, generally by means of electrical heating. For example, the heating film 30 includes a flexible electrothermal film and a high-temperature resistant insulating film attached to the outer surface of the flexible electrothermal film. The flexible electrothermal film is extended with electrode ends extending outside the high-temperature resistant insulating film; the graphene heat conducting sheet 40 plays roles such as heat conduction, heat equalization, and heat dissipation, and can uniformly and effectively conduct the heat generated by the heating film 30 to the metal heat conducting sheet 50, so that the surface of the heating element structure acting on the hair can have an effect of heat equalization; the present utility model further provides a metal heat conducting sheet 50, and the metal heat conducting sheet 50 plays a role in transitional heat conduction in terms of a property, so as to transfer the heat to the heat conducting hair-friendly cloth 60. The heat conducting hair-friendly cloth 60 is made of a material that is hair-friendly and has heat conduction performance, and can act on the hair better, and will not cause situations such as pulling of the hair during use. Generally, the heat conducting hair-friendly cloth 60 is made of high-temperature nylon cloth material.

[0034] On this basis, a bent fixing portion 51 is extended and provided based on the heat-conducting metal sheet. The bent fixing portion 51 is wound around the back of the substrate, so that a pressing force can be generated between the bent fixing portion 51 and the substrate to tightly press and fix the heat-insulating layer 20, the heating film 30, and the graphene heat-conducting sheet 40. With this setting, compared with the traditional methods of only using adhesive bonding or mechanical connection, or the combination of adhesive bonding and mechanical connection, this structure can not only achieve a complete and seamless penetration of the outer surface, but also, due to the certain strain capacity of the metal itself, prevent delamination or cracking from occurring after multiple uses. Moreover, through the pressing force generated by the metal material, the heating film 30 and the graphene heat-conducting sheet 40 can be more tightly pressed together, thus greatly improving the heat transfer effect. In addition, a cloth material is used to fit on the surface of the metal heat-conducting sheet 50 in a fitting manner and also extends to the back of the substrate. After installation, the heat-conducting cloth 60 is placed inside the hair beauty instrument, and no situation such as warping due to insufficient viscosity will occur, thus greatly improving the durability of the heating element structure.

[0035] The base layer 10 can be a plate-like structure or other structures. The heating element structure made of the plate-like base layer 10 is generally applied to a hair straightener.

[0036] Please refer to Figures 1-2 , in the embodiment of the present invention, the base layer 10 can also be a structure with an arc surface, so as to be applied to a curling iron. Specifically, the structure of the heating element structure based on the curling iron in this embodiment is as follows:

[0037] The base layer 10 includes a back plate portion 11 and an arc surface portion 12 formed on the back plate portion 11. Moreover, there is a spacing adapted to the total thickness of the heat-insulating layer 20, the heating film 30, and the graphene heat-conducting sheet 40 between both sides of the back plate portion 11 and both sides of the arc surface portion 12. The heat-insulating layer 20, the heating film 30, and the graphene heat-conducting sheet 40 are sequentially attached to the arc surface portion 12. The metal heat-conducting sheet 50 is attached to the graphene heat-conducting sheet 40, and the bent fixing portion 51 is wound around the back of the back plate portion 11 along both sides of the back plate portion 11.

[0038] With this setting, the cross-section of the heating element structure can form a semi-circular structure. Based on this structure, the present invention provides a curling iron, such as Figures 2-5As shown, it includes a holding body 70, a heated curling iron 80 connected to one end of the holding body 70, and a hairpin 73 elastically hinged to the end of the holding body 70 and forming a hair-clamping structure with the heated curling iron 80. The heated curling iron 80 includes two of the above-mentioned heating element structures, and the two heating element structures are mutually attached through a back plate portion 11 to form a rod-shaped structure. The holding body 70 is integrally provided with a power supply control circuit, and the holding body 70 is electrically connected to the heating film 30 through the power supply control circuit. In terms of structural arrangement, this curling iron can enable the heat generated by the heating film 30 to act on the hair better, and ensure that the heat-conducting and hair-friendly cloth 60 will not warp. Its structural arrangement is simple and it has a longer service life.

[0039] Please refer to Figure 4 , in the embodiment of the present invention, based on the firm fixation of the heated curling iron 80, a fixed socket 71 is provided at the end of the holding body 70 of the present invention. The heated curling iron 80 is fixedly connected to the socket, and a fixed cap 72 is fixedly connected to the other end of the heated curling iron 80.

[0040] Please refer to Figures 5-6 , in the embodiment of the present invention, a reinforcing strip 13 is formed on the back of the back plate portion 11. The two heating element structures are mutually abutted and cooperated through the reinforcing strip 13. A sealing strip 14 extending to the fixed socket 71 and the fixed cap 72 is also provided between the back plate portions 11 of the two heating element structures. The two heating elements are hermetically cooperated through the sealing strip 14. Through this setting, the sealing cooperation between the two heating element structures can be ensured, so that water will not penetrate into the interior from the gap, causing corrosion, short circuit or other damages. Specifically, the sealing strip 14 includes a fastening portion 141 and a blocking portion 142. The fastening portion 141 closely abuts against the back plate portions 11 of the two heating element structures, and the blocking portion 142 closely abuts against the heat-conducting and hair-friendly cloth 60 extending to the back of the back plate portion 11, so that the sealing strip 14 can be fixedly installed firmly and reliably.

[0041] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A heating element structure used in a hairdressing instrument, characterized in that: The invention comprises a base layer (10), a heat insulating layer (20), a heating film (30), a graphene heat conductive sheet (40), a metal heat conductive sheet (50) and a heat conductive intimate sheet (60) which are laminated in sequence, wherein two sides of the metal heat conductive sheet (50) are respectively provided with a bending fixing portion (51), and the metal heat conductive sheet (50) is wound around the back of the base layer (10) through the bending fixing portion (51), so that a pressing force is formed between the metal heat conductive sheet (50) and the base layer (10) to press and fix the heat insulating layer (20), the heating film (30) and the graphene heat conductive sheet (40), and two sides of the heat conductive intimate sheet (60) are respectively wound around the back of the base layer (10) along the bending fixing portion (51).

2. The heating element structure used in hairdressing equipment according to claim 1, characterized in that: The base layer (10) comprises a back plate portion (11) and a curved surface portion (12) formed on the back plate portion (11), and a spacing between two sides of the back plate portion (11) and two sides of the curved surface portion (12) is adapted to the total thickness of the thermal insulation layer (20), the heating film (30) and the graphene thermal conductive sheet (40), the thermal insulation layer (20), the heating film (30) and the graphene thermal conductive sheet (40) are sequentially attached to the curved surface portion (12), the metal thermal conductive sheet (50) is attached to the graphene thermal conductive sheet (40), and the bent fixing portion (51) is wound along two sides of the back plate portion (11) to the back of the back plate portion (11).

3. The heating element structure used in hairdressing equipment according to claim 1, characterized in that: The heat insulation layer (20) is made of aerogel material.

4. The heating element structure used in hairdressing equipment according to claim 1, characterized in that: The heating film (30) comprises a flexible electric heating film and a high temperature resistant insulating film attached to the outer surface of the flexible electric heating film, and the flexible electric heating film is extended to be provided with an electrode end extending out of the high temperature resistant insulating film.

5. The heating element structure used in hairdressing equipment according to claim 1, characterized in that: The thermal conductive release (60) is made of high temperature nylon cloth material.

6. The heating element structure used in hairdressing equipment according to claim 1, characterized in that: The thermal conductive film (60) comprises a Teflon layer and a high temperature resistant resin layer coated on the outside of the Teflon layer.

7. A hair curler, characterized in that: The invention comprises a holding body (70), a heated curling rod (80) connected to one end of the holding body (70), and a hairpin (73) elastically hinged to the end of the holding body (70) and forming a hair clamping structure with the heated curling rod (80), wherein the heated curling rod (80) comprises two heating element structures according to claim 2, the two heating element structures are bonded to each other via a back plate portion (11) to form a rod-shaped structure, the holding body (70) is integrated with a power supply control circuit, and the holding body (70) is electrically connected to the heating film (30) via the power supply control circuit.

8. A hair curler according to claim 7, characterized in that: A fixed socket (71) is provided at the end of the gripping body (70), the heating curling rod (80) is fixedly connected to the socket, and a fixed cap (72) is fixedly connected to the other end of the heating curling rod (80).

9. A hair curler according to claim 8, characterized in that: A reinforcing strip (13) is formed on the back side of the back plate portion (11), and the two heating element structures are mutually abutted and matched via the reinforcing strip (13). A sealing strip (14) extending to the fixed socket (71) and the fixed cap (72) is also provided between the back plate portions (11) of the two heating element structures, and the two heating elements are sealed and matched via the sealing strip (14).

10. A hair curler according to claim 9, characterized in that: The sealing strip (14) comprises a fixing portion (141) and a blocking portion (142); the fixing portion (141) is tightly abutted against the back plate portion (11) of the two heating element structures; and the blocking portion (142) is tightly abutted against the heat conductive proximal portion (60) extending to the back of the back plate portion (11).

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