Heat conduction structure for portable hair straightening and curling device
By using graphene film-covered PI flexible heating sheet and detachable mating connection in portable straight hair and curler, the problems of fragile and high maintenance cost of ceramic heating sheets are solved, and efficient and safe heat transfer and convenient Assembly maintenance.
Patent Information
- Application Number
- CN202420162912.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-23
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-01-23
AI Technical Summary
The ceramic heating sheets in existing portable straight hair and curlers are fragile, inconvenient to assembly and high maintenance costs. The thermal structure adopts an integrated fixed connection. The entire thermal structure needs to be removed during maintenance, which affects the safety of use.
The PI flexible heating sheet covered with graphene film is used as the heating source, and is connected and insulated through a detachable mating connection, including a thermal block, a thermal rod, a thermal base and a cover to ensure directional conduction of heat and avoid heat transfer to the shell. simplifies assembly and maintenance.
It realizes efficient and safe heat transfer of PI flexible heat ducts, reduces production and maintenance costs, and improves the safety of use and operation of equipment.
Smart Images
Figure CN222366406U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electric heating structures, in particular to a heat-conducting structure used for a portable hair straightener or hair curler. Background Art
[0002] Portable hair straighteners and curling irons are devices that achieve hairdressing functions through heating components. Their core components are naturally heat-conducting structures with heat sources.
[0003] As people's quality of life improves, the requirements for the use of portable hair straighteners and curling irons are gradually becoming higher. The heat source in the heat-conducting structure needs to be able to quickly increase the temperature, and the temperature is required to be around 220°C. Most of the existing heat sources in portable hair straighteners and curling irons use ceramic heating sheets to meet the above requirements. However, the ceramic heating sheet is brittle and easily damaged, and it is impossible to machine the mounting groove structure on the surface, making it inconvenient to position it during assembly. There are also defects such as inability to mount NTC, high power consumption, and high price.
[0004] In addition, the thermal conductive structure in the portable hair straightener or curling iron is installed in an integrated fixed connection manner due to sealing considerations. If the thermal conductive structure of the portable hair straightener or curling iron using this thermal conductive structure is damaged during later use and requires maintenance, the entire thermal conductive structure needs to be dismantled and replaced for normal use of the portable hair straightener or curling iron, resulting in high maintenance costs. Utility Model Content
[0005] In view of the above technical deficiencies, the utility model provides a heat-conducting structure which uses a PI flexible heating sheet as a heat source, which can not only provide sufficient heat energy for a hair straightener or a hair curler, but also save production costs and has simple assembly and maintenance work.
[0006] In order to achieve the above object, the utility model is implemented through the following technical solutions:
[0007] The utility model discloses a heat-conducting structure for a portable hair straightener and hair curler. The heat-conducting structure is arranged in a shell of a working end of the portable hair straightener and hair curler, and comprises a PI flexible heating sheet and a heat insulation board whose outer side is coated with a layer of graphene film. A plurality of matching openings are arranged in the middle of the bottom surface of the shell. The heat insulation board is fixed in the shell above the matching opening and is provided with a plurality of first matching grooves. A heat-conducting block is matched in the first matching groove. The bottom end of the heat-conducting block passes through the outside of the matching opening. A plurality of heat-conducting rods are fixedly connected to the bottom surface of the heat-conducting block. A second matching groove is arranged on the heat insulation board above the first matching groove. A heat-conducting seat is matched in the second matching groove. A third matching groove for matching the PI flexible heating sheet is arranged in the heat-conducting seat. First positioning grooves are arranged at both ends of the PI flexible heating sheet in the width direction. Positioning columns are arranged at both ends of the heat-conducting seat in the width direction, and radial ends are located in the third matching groove. The PI flexible heating sheet is fixed in the third matching groove through the matching between the first positioning groove and the positioning column.
[0008] Furthermore, the cross-sectional shapes of the first matching groove and the heat conducting block are the same and both are T-shaped, and the cross-sectional size of the bottom end of the heat conducting block is smaller than the cross-sectional sizes of the first matching groove and the matching opening.
[0009] Furthermore, a plurality of gaskets are arranged above the PI flexible heating sheet, and second positioning grooves are arranged at both ends of the gasket in the width direction. The gasket is fixed above the PI flexible heating sheet through the cooperation between the second positioning grooves and the positioning columns.
[0010] Furthermore, a cover is provided above the thermal seat, both ends of the cover in the width direction are provided with matching columns, a matching hole is provided in the middle of the positioning column, and the cover is fixed above the thermal seat through the matching between the matching columns and the matching holes.
[0011] Furthermore, the gasket and the cover are both made of heat insulating material.
[0012] Furthermore, ejector pins are provided on the inner surfaces of both ends of the cover in the length direction, and the bottom ends of the ejector pins are pressed on the top surface of the gasket.
[0013] Furthermore, the cover body and the heat-conducting seat are each provided with an opening at one end in the length direction, and the electrodes and connecting wires of the PI flexible heating sheet are both arranged at the end of the PI flexible heating sheet close to the opening side.
[0014] The beneficial effects of the utility model are:
[0015] The heat-conducting structure adopts a PI flexible heating sheet as a heat source, and a groove structure for matching can be processed on its surface, so as to facilitate its positioning during assembly, which can not only provide sufficient heat energy for the hair straightener and hair curler, but also save production costs; in addition, the heating end of the heat-conducting structure will not transfer heat to the housing of the hair straightener and hair curler in the form of heat conduction, making the use of the hair straightener and hair curler safer; and, the components of the heat-conducting structure are connected by detachable matching, which can be easily operated when the hair straightener and hair curler are assembled or maintained. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The structure diagram of the heat conducting structure when assembled in the housing Figure 1 .
[0017] Figure 2 The structure diagram of the heat conducting structure when assembled in the housing Figure 2 .
[0018] Figure 3 This is an exploded view of the parts of the heat conducting structure.
[0019] Figure 4 This is a schematic diagram of a heat-conducting block being fitted in the first fitting groove and extending out of the fitting opening.
[0020] Figure 5 This is a schematic diagram of the structure after the heat-conducting structure is installed with a cover.
[0021] Figure 6 It is a schematic diagram of the structure of the cover body and the gasket.
[0022] Figure 7 The schematic diagram is a structural diagram of a portable hair straightener or hair curler equipped with the heat-conducting structure.
[0023] In the figure, 1, heat-conducting structure; 2, shell; 3, PI flexible heating sheet; 4, heat insulation board; 5, matching mouth; 6, first matching groove; 7, heat-conducting block; 8, heat-conducting rod; 9, second matching groove; 10, heat-conducting seat; 11, third matching groove; 12, first positioning groove; 13, positioning column; 14, gasket; 15, second positioning groove; 16, matching column; 17, matching hole; 18, ejector pin; 19, opening; 20, electrode; 21, connecting wire; 22, cover. DETAILED DESCRIPTION
[0024] The utility model discloses a heat-conducting structure for a portable hair straightener or hair curler. Figures 1 to 7As shown in combination, the heat-conducting structure 1 is arranged in a shell 2 of the working end of a portable hair straightener and curling iron, including a PI flexible heating sheet 3 and a heat insulation board 4 coated with a layer of graphene film on the outside, a plurality of matching openings 5 are arranged in the middle of the bottom surface of the shell 2, the heat insulation board 4 is fixed in the shell 2 above the matching opening 5 and is provided with a plurality of first matching grooves 6, a heat-conducting block 7 is matched in the first matching groove 6, the bottom end of the heat-conducting block 7 passes through the outside of the matching opening 5, a plurality of heat-conducting rods 8 are fixedly connected to the bottom surface of the heat-conducting block 7, and the first A second matching groove 9 is provided on the heat insulation plate 4 above a matching groove 6, and the second matching groove 9 is matched with a heat-conducting seat 10, and a third matching groove 11 for matching with the PI flexible heating sheet 3 is provided in the heat-conducting seat 10, and first positioning grooves 12 are provided at both ends of the width direction of the PI flexible heating sheet 3, and positioning columns 13 are provided at both ends of the width direction of the heat-conducting seat 10, and radial ends are located in the third matching groove 11. The PI flexible heating sheet 3 is fixed in the third matching groove 11 by the cooperation between the first positioning groove 12 and the positioning column 13.
[0025] Among them, the heating element in the PI flexible heating sheet 3 is made of copper and PI materials, and is fused with the graphene film with insulation function at high temperature, so that the heat source part of the thermal conductive structure 1 has the characteristics of fine and uniform wiring, small internal resistance, balanced thermal conductivity and heat dissipation, low internal consumption, etc. At the same time, the thermal conductivity, energy saving and battery life are significantly improved. The NTC automatic patch has stable quality, accurate temperature control, low comprehensive cost, stable after-sales, and the cost is half of that of the ceramic heating sheet; moreover, the surface thereof can be processed with a first positioning groove 12 for cooperating with the positioning column 13 for positioning, thereby facilitating its installation into the thermal conductive seat 10 for positioning during assembly.
[0026] In addition, the heat emitted by the PI flexible heating sheet 3 in the heat-conducting structure 1 will be transferred to the heat-conducting block 7 after being conducted through the heat-conducting seat 10, and then transferred to the heat-conducting rod 8 by the heat-conducting block 7 to act on human hair. After the shell 2 near the heating end is blocked by the heat insulation plate 4, the heat energy of the heat-conducting seat 10 will not be transferred to the shell 2 of the hair straightener or curling iron in the form of heat conduction, thereby making the use of the hair straightener or curling iron safer.
[0027] In addition, the heat-conducting block 7, the heat-conducting seat 10 and the PI flexible heating sheet 3 of the heat-conducting structure 1 are all connected in a detachable manner, which can be easily operated when assembling or maintaining the hair straightener or curling iron.
[0028] As one of the embodiments of the present application, Figure 3 and Figure 4 As shown in the figure, the cross-sectional shapes of the first matching groove 6 and the heat-conducting block 7 are the same and both are T-shaped, and the cross-sectional size of the bottom end of the heat-conducting block 7 is smaller than the cross-sectional sizes of the first matching groove 6 and the matching opening 5.
[0029] Among them, when the bottom end of the heat conductive block 7 extends out of the mating opening 5, it will not contact with the mating opening 5, thereby forming a gap with the shell 2. Through this gap, the heat of the heat conductive structure 1 will not be transferred to the shell 2 by heat conduction, further improving the safety when using the hair straightener and curling iron.
[0030] As one of the embodiments of the present application, Figure 1 As shown, a plurality of gaskets 14 are provided above the PI flexible heating sheet 3 , and second positioning grooves 15 are provided at both ends of the gasket 14 in the width direction. The gasket 14 is fixed above the PI flexible heating sheet 3 through the cooperation between the second positioning grooves 15 and the positioning columns 13 .
[0031] The position of the PI flexible heating sheet 3 can be limited by the gasket 14 , so that the position fixing effect of the PI flexible heating sheet 3 in the second positioning groove 15 and the side of the positioning column 13 is improved.
[0032] As one of the embodiments of the present application, Figure 1 , Figure 5 and Figure 6 As shown in the figure, a cover body 22 is provided above the thermal conductive seat 10, and matching columns 16 are provided at both ends of the cover body 22 in the width direction. A matching hole 17 is provided in the middle of the positioning column 13, and the cover body 22 is fixed above the thermal conductive seat 10 through the matching between the matching columns 16 and the matching holes 17.
[0033] The cover 22 can be fitted onto the top of the thermal base 10 through the fitting column 16 , so that the assembly of the cover 22 is convenient.
[0034] As a further preference of the above embodiment, Figure 6 As shown, the gasket 14 and the cover 22 are both made of heat insulating material.
[0035] Among them, the gasket 14 covers the top of the PI flexible heating sheet 3, blocking the heat emitted by the PI flexible heating sheet 3 from diffusing into the cover 22 above, and the cover 22 can prevent the heat from diffusing to the top of the shell 2, avoiding a large amount of heat from accumulating on the top of the shell 2 and being transferred to the top of the shell 2 by heat radiation or heat conduction, making the heat conduction more directional, while increasing the safety when using a hair straightener or curling iron.
[0036] As a further preference of the above embodiment, Figure 5 and Figure 6 As shown in the figure, the inner surfaces of both ends of the cover body 22 in the length direction are provided with ejector pins 18 , and the bottom ends of the ejector pins 18 are pressed on the top surface of the gasket 14 .
[0037] Among them, after the cover body 22 is assembled on the top of the thermal conductive base 10, the top pin 18 is pressed on the top surface of the gasket 14, so that the gasket 14 can be pressed on the top of the PI flexible heating sheet 3, and the position of the PI flexible heating sheet 3 is further fixed indirectly.
[0038] As a further preference of the above embodiment, Figure 3 and Figure 5 As shown in the figure, the cover 22 and one end of the thermal seat 10 in the length direction are both provided with an opening 19 , and the electrodes 20 and the connecting wires 21 of the PI flexible heating sheet 3 are both arranged at the end of the PI flexible heating sheet 3 close to the opening 19 side.
[0039] The opening 19 can facilitate the connection between the electrode 20 of the PI flexible heating sheet 3 and the connecting wire 21. At the same time, the operation of connecting the connecting wire 21 to the power supply in the hair straightener or curling iron will also be more convenient.
[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A heat-conducting structure for a portable hair straightener or hair curler, the heat-conducting structure being arranged in a housing at a working end of the portable hair straightener or hair curler, characterized in that: It comprises a PI flexible heating sheet and a heat insulation board which are coated with a layer of graphene film on the outside, a plurality of matching openings are provided in the middle of the bottom surface of the shell, the heat insulation board is fixed in the shell located above the matching openings and is provided with a plurality of first matching grooves, a heat conductive block is matched in the first matching groove, the bottom end of the heat conductive block passes through the outside of the matching opening, a plurality of heat conductive rods are fixedly connected to the bottom surface of the heat conductive block, a second matching groove is provided on the heat insulation board above the first matching groove, a heat conductive seat is matched in the second matching groove, a third matching groove for matching with the PI flexible heating sheet is provided in the heat conductive seat, first positioning grooves are provided at both ends of the width direction of the PI flexible heating sheet, positioning columns are provided at both ends of the width direction of the heat conductive seat with radial ends located in the third matching groove, and the PI flexible heating sheet is fixed in the third matching groove by matching between the first positioning groove and the positioning column.
2. The heat conducting structure according to claim 1, characterized in that: The cross-sectional shapes of the first matching groove and the heat conducting block are the same and both are T-shaped, and the cross-sectional size of the bottom end of the heat conducting block is smaller than the cross-sectional sizes of the first matching groove and the matching opening.
3. The heat conducting structure according to claim 1, characterized in that: A plurality of gaskets are arranged above the PI flexible heating sheet, and second positioning grooves are arranged at both ends of the gasket in the width direction. The gasket is fixed above the PI flexible heating sheet through the cooperation between the second positioning grooves and the positioning columns.
4. The heat conducting structure according to claim 3, characterized in that: A cover is provided above the heat-conducting seat, and matching columns are provided at both ends of the cover in the width direction. A matching hole is provided in the middle of the positioning column, and the cover is fixed above the heat-conducting seat through the matching between the matching columns and the matching holes.
5. The heat conducting structure according to claim 4, characterized in that: The gasket and the cover are both made of heat insulating material.
6. The heat conducting structure according to claim 4, characterized in that: The inner surfaces of both ends of the cover body in the length direction are provided with ejector pins, and the bottom ends of the ejector pins are pressed on the top surface of the gasket.
7. The heat-conducting structure according to claim 4, characterized in that: The cover body and the heat-conducting seat are both provided with an opening at one end in the length direction, and the electrodes and the connecting wires of the PI flexible heating sheet are both arranged at the end of the PI flexible heating sheet close to the opening side.