Hairdressing splint and temperature control method

Abstract

According to the hairdressing clamping plate and the temperature control method, an upper clamping handle and a lower clamping handle of the hairdressing clamping plate are hinged, a main control board is arranged in the upper clamping handle or the lower clamping handle, a hot clamping assembly is arranged on the clamping side of the upper clamping handle and the lower clamping handle and comprises a clamping plate component and a heating plate, a pair of connecting rails is arranged on the clamping plate component, and the heating plate is arranged on the clamping plate component. The clamping plate component is connected with a shell of the upper clamping handle or the lower clamping handle through the connecting rails, a containing space is formed between the clamping plate component and the shell of the upper clamping handle or the lower clamping handle connected with the clamping plate component, the heating plate is located between the two connecting rails and attached to the inner side of the clamping plate component, and a guide groove is formed in the outer side of the clamping plate component. The guide groove of the upper clamping handle and the corresponding guide groove of the lower clamping handle are vertically spliced to form a tubular structure, a baffle is arranged on the upper clamping handle and / or the lower clamping handle, and the baffle is located on the side where the tail end of the guide groove is located. Hand holding and temperature control of the clamping plate are facilitated, and modeling cannot be damaged by steam in the wet hair modeling process.

Description

Technical Field

[0001] This invention relates to the field of hair styling tools, and in particular to a hair straightener and a temperature control method. Background Technology

[0002] Hair straighteners are indispensable multi-functional tools in modern hairstyling. Through a precisely designed heating system and a smooth panel, they provide users with convenient and efficient hair styling solutions. Their core principle lies in using controlled high temperatures to soften the keratin structure inside the hair strands, breaking the original hydrogen bonds. Then, under external force, the hair's shape is reshaped. Whether instantly transforming naturally curly or frizzy hair into smooth, shiny straight hair, or creating subtle curls such as inward or outward waves through variations in technique, it can all be easily achieved. When using them, users simply select an appropriate amount of hair and insert it between the plates, then slowly slide it from root to tip at a moderate speed to complete the basic styling. High-end models often feature multiple temperature control settings (typically ranging from 120℃ to 230℃), allowing for personalized adjustments based on hair texture: lower temperatures are suitable for fine, soft hair to avoid damage, while higher temperatures are needed for effective shaping of thicker, stiffer hair. This invention aims to provide a novel hair straightener and temperature control method. Summary of the Invention

[0003] In view of the above-mentioned prior art, the purpose of this invention is to provide a novel hair straightener and a temperature control method.

[0004] To achieve the above technical objectives, the present invention adopts the following technical solution: This invention provides a hair straightener, including an upper clamp and a lower clamp, the upper clamp and the lower clamp being hinged together. A main control board is disposed inside the upper clamp or the lower clamp. A heated clamp assembly is disposed on the clamping side of the upper clamp and the lower clamp. The heated clamp assembly includes a clamping plate component and a heating plate. A pair of connecting rails are disposed on the clamping plate component. The clamping plate component is connected to the housing of the upper clamp or the lower clamp through the connecting rails. There is a receiving space between the clamping plate component and the housing of the connected upper clamp or the lower clamp. The heating plate is located between the two connecting rails and is fitted against the inner side of the clamping plate component. A guide groove is disposed on the outer side of the clamping plate component. When the upper clamp and the lower clamp are clamped, the guide groove of the upper clamp and the corresponding guide groove of the lower clamp are spliced ​​together to form a tubular structure. A baffle is disposed on the upper clamp and / or the lower clamp, the baffle being located on the side where the end of the guide groove is located.

[0005] Furthermore, in the hair straightener, the guide grooves on the straightener component are a pair and are arranged parallel to each other along the length direction of the straightener component. An inner baffle is provided at the front end of the upper handle and an outer baffle is provided at the front end of the lower handle. The inner baffle is located close to the straightener component, and the outer baffle is located away from the straightener component. The inner baffle is spaced apart from the end of the guide groove, and the outer baffle is spaced apart from the inner baffle. The height of the inner baffle is less than the height of the outer baffle.

[0006] Furthermore, the hair straightener has exposed sides on both sides that are in contact with the outside air.

[0007] Furthermore, in the hair straightener, within the accommodating space, a temperature sensor and a fuse are provided on the inner side of the heating plate, and the heating plate, temperature sensor, and fuse are electrically connected to the main control board.

[0008] Furthermore, in the hair straightener, a front frame and a rear frame are mounted on the connecting rail of the straightener component. The front frame is mounted above the temperature sensor, and the rear frame is mounted above the fuse.

[0009] Furthermore, in the hair straightener, the top of the connecting rail is spaced apart from the inner side of the housing of the upper or lower clamp connected to it, and support feet are provided between the front frame and the rear frame and the inner side of the housing of the corresponding upper or lower clamp.

[0010] Furthermore, in the hair straightener, the support foot is hemispherical, the spherical surface of the support foot abuts against the front frame / rear frame, and the bottom surface of the support foot is an annular surface that abuts against the inner side of the housing of the upper or lower clamp handle.

[0011] In a preferred embodiment, the hair straightener has an upper rotating cylinder at the hinge joint between the upper and lower clamping handles, and a lower rotating cylinder at the hinge joint between the lower and upper clamping handles. One end of the upper rotating cylinder is connected to one end of the lower rotating cylinder. An inner rotating cylinder is installed inside the upper rotating cylinder, and a rotating seat is provided inside the lower rotating cylinder. Alternatively, an inner rotating cylinder is installed inside the lower rotating cylinder, a rotating seat is provided inside the upper rotating cylinder, a rotating shaft is provided on the rotating seat, and the inner rotating cylinder is mounted on the rotating shaft.

[0012] Furthermore, in the hair straightener, a torsion spring is installed on the rotating base, and the inner rotating cylinder covers the torsion spring. Bolts are provided on the rotating base and the inner rotating cylinder, and the bolts pass through the middle of the rotating base, the inner rotating cylinder, and the rotating shaft. The upper rotating cylinder and the lower rotating cylinder are connected by the bolts.

[0013] Furthermore, in the hair straightener, a positioning block is provided on the outer side of the inner rotating cylinder, and a positioning groove is provided on the upper or lower rotating cylinder. When the inner rotating cylinder is inserted into the upper or lower rotating cylinder, the positioning block is inserted into the corresponding positioning groove.

[0014] The present invention also provides a method for controlling the temperature of a hair straightener, comprising the following steps: The hair straightener stops heating once the plates reach the preset temperature. Start the stop timer; After the pause time reaches the preset pause time limit T1, heating continues, where T1 does not exceed 0.3 seconds; Resume timing; After the heating time reaches the preset duration T2, the heating stops and the process returns to the "Start Stop Time Timing" step. The heating power during the heating process shall not exceed half of the rated power of the hair straightener, and T2 shall not exceed 0.10 seconds.

[0015] Preferably, the hair straightener temperature control method further includes, after the step of stopping heating after the hair straightener plate reaches a preset temperature setting, the following: The temperature of the hair straightener was oversampled; The moving average value is calculated based on the oversampled data and used as the current temperature feedback value.

[0016] Specifically, in the hair straightener temperature control method, the preset duration T2 is 0.05 seconds. Specifically, the hair straightener temperature control method has a preset stop time T1 of 0.2 seconds.

[0017] Specifically, in the hair straightener temperature control method, the continuing heating power is 10% to 30% of the rated heating power of the hair straightener.

[0018] Furthermore, the hair straightener temperature control method, after the step of calculating a moving average value based on oversampling data as the current temperature feedback value, further includes: If the temperature difference between the current temperature feedback value and the preset temperature setting is greater than the preset difference value; Then adjust the continued heating power.

[0019] Specifically, in the hair straightener temperature control method, the continuing heating power is 20% of the rated heating power of the hair straightener.

[0020] Compared to existing technologies, the present invention provides a hair straightener, including an upper clamp and a lower clamp, the upper clamp and the lower clamp being hinged together. A main control board is disposed inside the upper clamp or the lower clamp. A heated clamp assembly is disposed on the clamping side of the upper clamp and the lower clamp. The heated clamp assembly includes a clamping plate component and a heating plate. A pair of connecting rails are disposed on the clamping plate component. The clamping plate component is connected to the housing of the upper clamp or the lower clamp through the connecting rails. There is a receiving space between the clamping plate component and the housing of the connected upper clamp or the lower clamp. The heating plate is located between the two connecting rails and is fitted against the inner side of the clamping plate component. A guide groove is disposed on the outer side of the clamping plate component. When the upper clamp and the lower clamp are clamped, the guide groove of the upper clamp and the corresponding guide groove of the lower clamp are spliced ​​together to form a tubular structure. A baffle is disposed on the upper clamp and / or the lower clamp, the baffle being located on the side where the end of the guide groove is located. This invention can greatly reduce the contact area between the clamping plate component and the housing of the upper and lower clamping handles, and the space between them can facilitate temperature isolation. It is convenient for hand gripping and for clamping plate temperature control. Furthermore, the guide groove allows the water vapor generated by high temperature heating during wet hair styling to be discharged towards the baffle side along the guide groove. This is beneficial for preventing the hair style from being ruined by steam during the styling process and also helps to prevent the scalp nearby from being burned by steam. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a state structure of the hair straightener provided by the present invention.

[0023] Figure 2 This is a schematic diagram of another state of the hair straightener provided by the present invention.

[0024] Figure 3 Schematic diagram of the exploded structure of the hair straightener provided by the present invention Figure 1 .

[0025] Figure 4 Schematic diagram of the exploded structure of the hair straightener provided by the present invention Figure 2 .

[0026] Figure 5 Schematic diagram of the exploded structure of the hair straightener provided by the present invention Figure 3 .

[0027] Figure 6 Test data for the hair straightener temperature control method provided by the present invention Figure 1 .

[0028] Figure 7 Test data for the hair straightener temperature control method provided by the present invention Figure 2 .

[0029] Figure 8 Test data for the hair straightener temperature control method provided by the present invention Figure 3 .

[0030] Figure 9 Test data for the hair straightener temperature control method provided by the present invention Figure 4 .

[0031] Explanation of icon numbers: Upper clamp handle 11 Lower clamp 12 Main control board 13 Clamping component 14 Heating plate 15 Connecting track 16 Casing 17 Guide groove 18 Inner baffle 19 outer baffle 20 Exposed side 21 Temperature sensor 22 Fuse 23 Front frame 24 Rear frame 25 Support leg 26 Upper rotating drum 27 Lower rotating drum 28 Inner rotating cylinder 29 Rotating seat 30 Torsion spring 31 Positioning block 32 Positioning groove 33 Shaft 34 Cover 35 Detailed Implementation The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0034] like Figure 1 , Figure 2 and Figure 3 , Figure 4 As shown, the present invention provides a hair straightener, including an upper clamp 11 and a lower clamp 12, wherein the upper clamp 11 and the lower clamp 12 are hinged together. A main control board 13 is disposed inside the upper clamp 11 or the lower clamp 12. A heated clamping assembly is disposed on the clamping side of the upper clamp 11 and the lower clamp 12. The heated clamping assembly includes a clamping plate component 14 and a heating plate 15. A pair of connecting rails 16 are disposed on the clamping plate component 14. The clamping plate component 14 is connected to the housing 17 of the upper clamp 11 or the lower clamp 12 through the connecting rails 16. There is a receiving space between the housing 17 of the upper clamp 11 or the lower clamp 12 connected to the 14, the heating plate 15 is located between the two connecting rails 16 and is fitted to the inner side of the clamping plate component 14, the outer side of the clamping plate component 14 is provided with a guide groove 18, when the upper clamp 11 and the lower clamp 12 are clamped, the guide groove 18 of the upper clamp 11 and the guide groove 18 of the corresponding lower clamp 12 are spliced ​​together to form a tubular structure, and a baffle is provided on the upper clamp 11 and / or the lower clamp 12, the baffle is located on the side where the end of the guide groove 18 is located. The present invention can greatly reduce the contact area between the clamping plate component 14 and the housing 17 of the upper clamping handle 11 and the lower clamping handle 12, and the space between them can facilitate temperature isolation. It is convenient for hand gripping and clamping plate temperature control. Furthermore, the guide groove 18 allows the water vapor generated by high temperature heating during the wet hair styling process to be discharged towards the baffle side along the guide groove 18. This is beneficial for preventing the hair styling process from being ruined by steam and also helps to prevent the scalp nearby from being burned by steam.

[0035] Furthermore, in the hair straightener provided by the present invention, the guide grooves 18 on the straightener component 14 are a pair and arranged parallel to each other along the length direction of the straightener component 14. An inner baffle 19 is provided at the front end of the upper handle 11, and an outer baffle 20 is provided at the front end of the lower handle 12. The inner baffle 19 is located close to the straightener component 14, and the outer baffle 20 is located away from the straightener component 14. The inner baffle 19 and the end of the guide groove 18 are spaced apart, and the outer baffle 20 and the inner baffle 19 are spaced apart. The height of the inner baffle 19 is less than the height of the outer baffle 20. The present invention creates an S-shaped channel at the outlet end of the steam following the guide groove 18 through the inner baffle 19 and the outer baffle 20, lengthening the steam's exit path and minimizing the steam temperature, thus further preventing scalding.

[0036] Furthermore, the hair straightener provided by the present invention has exposed side portions 21 on both sides of the straightener component 14, which are in contact with the outside air. The straightener component 14 of the present invention is mainly made of aluminum plate and is connected to the housing 17 of the upper handle 11 or the housing 17 of the lower handle 12 through a pair of vertical connecting rails 16. The housing 17 of the upper handle 11 and the housing 17 of the lower handle 12 are arched, so the two concave structures form a large accommodating space, which can accommodate other parts, has good structural strength, and can effectively insulate against temperature, allowing users to directly hold the housing 17 of the upper handle 11 and the lower handle 12 for operation. The exposed aluminum plate makes it easier to contact the hair, facilitates styling and smoothing, and reduces the temperature of the upper and lower bodies, allowing people to directly touch the outer side (handle) of the housing 17 of the upper and lower handles 12 to prevent burns. In this embodiment, a locking strip is provided on the side of the connecting track 16, and corresponding slots (not labeled in the figure) are provided on both sides of the bottom of the clamp housing 17. The locking strip is fastened into the slots of the clamp housing 17 to complete the fixed connection between the two.

[0037] Furthermore, in the hair straightener provided by the present invention, the heated clamp assembly within the accommodating space further includes a temperature sensor 22 and a fuse 23. The temperature sensor 22 and fuse 23 are disposed on the inner side of the heating plate 15, and the heating plate 15, temperature sensor 22, and fuse 23 are electrically connected to the main control board 13. The temperature sensor 22 of the present invention primarily adopts an NTC temperature sensor 22. The NTC (Negative Temperature Coefficient) temperature sensor 22 is a thermistor based on semiconductor materials, capable of meeting high-precision sampling requirements. Furthermore, in the hair straightener provided by the present invention, a front frame 24 and a rear frame 25 are mounted on the connecting rail 16 of the clamp component 14. The front frame 24 is mounted above the temperature sensor 22, and the rear frame 25 is mounted above the fuse 23. Furthermore, in the hair straightener provided by the present invention, the top of the connecting rail 16 is spaced apart from the inner side of the housing 17 of the upper clamp 11 or lower clamp 12 to which it is connected, and support feet 26 are provided between the front frame 24 and the rear frame 25 and the inner side of the housing 17 of the corresponding upper clamp 11 or lower clamp 12. In the present invention, the front frame 24 is a flat frame, and the rear frame 25 is an n-shaped frame, mainly matching the cover of the fuse 23 below. The front frame 24 and the rear frame 25 serve as a connecting element. Furthermore, in the hair straightener provided by the present invention, the support foot 26 is hemispherical, and the spherical surface of the support foot 26 abuts against the front frame 24 / rear frame 25. The bottom surface of the support foot 26 is annular and abuts against the inner side of the housing 17 of the upper clamp 11 or lower clamp 12. A groove is also provided on the inner side of the housing 17 of the upper clamp 11 or lower clamp 12 for mounting the support foot 26. This structure can improve the structural strength of the clamp, meet the structural support requirements of a large capacity, and greatly reduce the contact area between the straightener component 14 and the clamp housing 17. The support foot 26 is mainly made of heat-insulating rubber.

[0038] The clamping plate components 14 of the upper clamping handle 11 and the lower clamping handle 12 of the present invention can both sense and control the temperature independently, which is beneficial to improving the temperature control accuracy. Generally, although it is beneficial to improve the temperature control accuracy by driving and controlling the temperature of the two clamping plate components 14 independently, they can generally be heated to the corresponding temperature level simultaneously. In order to further optimize the temperature control, a hair straightener temperature control method is also provided, which includes the following steps: S1. The hair straightener stops heating after the plates reach the preset temperature. S2, Start the stop timer; S3. After the stop time reaches the preset stop time limit T1, heating continues, where T1 does not exceed 0.3 seconds; S4. Resume timing; S5. After the continued heating time reaches the preset continued time limit T2, stop heating and return to step "S2. Start stopping time timing". The continued heating power shall not exceed half of the rated power of the hair straightener heating and T2 shall not exceed 0.10 seconds.

[0039] Specifically, in the hair straightener temperature control method newly provided by this invention, the preset continuing time limit T2 is 0.05 seconds. Specifically, in the hair straightener temperature control method newly provided by this invention, the preset stopping time limit T1 is 0.2 seconds. Specifically, in the hair straightener temperature control method newly provided by this invention, the continuing heating power is 10%~30% of the rated heating power of the hair straightener. Specifically, in the hair straightener temperature control method newly provided by this invention, the continuing heating power is 20% of the rated heating power of the hair straightener. This invention, by subdividing the heating power, reduces temperature fluctuations, which is beneficial for precise temperature control and reduces heat damage to the hair during hair straightener use. In this application, the straightener temperature is mainly obtained through two temperature sensors 22, and heating is achieved through a heating plate 15, primarily using a ceramic heating element. Since controlling the heating element to reach the corresponding temperature is prior art, it will not be described further here. The temperature of the hair straightener mentioned here refers to the temperature of the clamping plate component 14 of the upper clamping handle 11 and the lower clamping handle 12. The temperature of the clamping plate component 14 is heated by the heating plate 15 (heating element) and is obtained in real time by the temperature sensor 22.

[0040] Preferably, the hair straightener temperature control method newly provided by the present invention further includes, after the step of stopping heating after the hair straightener plate reaches a preset temperature setting, the method further includes: The temperature of the hair straightener was oversampled; The moving average value is calculated based on the oversampled data and used as the current temperature feedback value.

[0041] Furthermore, the hair straightener temperature control method newly provided by the present invention, after the step of calculating a moving average value based on oversampling data as the current temperature feedback value, further includes: If the temperature difference between the current temperature feedback value and the preset temperature setting is greater than the preset difference value; Then adjust the continued heating power.

[0042] For example, if the preset temperature difference is 0.5 degrees Celsius and the preset temperature setting is 180 degrees Celsius, and the current temperature feedback value is 181.91 degrees Celsius, then the heating power is reduced by 1%. That is, the original heating power was 20% of the rated power of the hair straightener, and now the heating power is reduced to 19% of the rated power of the hair straightener. If the current temperature feedback value is 179.36 degrees Celsius, then the heating power is increased by 1%. That is, the original heating power was 20% of the rated power of the hair straightener, and now the heating power is reduced to 21% of the rated power of the hair straightener.

[0043] In this invention, a pulse width modulation (PWM) signal with an adjustable duty cycle can be used to control the on / off state of the heater. Oversampling is performed on the temperature sensor 22, with ≥16 sampling times per second within a single sampling cycle. A moving average is calculated based on the oversampling data as the current temperature feedback value. The PWM duty cycle is dynamically adjusted according to the difference between the feedback value and the target temperature. Anti-aliasing filtering is used for oversampling, and the sampling frequency can be more than 10 times the sensor response time.

[0044] This invention has been verified through extensive experiments. This application summarizes and demonstrates some of the test results; please refer to [link / reference]. Figures 6-9 A total of six hair straighteners were used for simultaneous comparative testing, with temperature settings ranging from 60 to 180 degrees Celsius, heating element resistance from 55 to 60 Ω, ambient temperature of 24 degrees Celsius, and test voltage of 100V 50 / 60HZ.

[0045]

[0046] Better, such as Figure 5 As shown, the hair straightener provided by this invention improves the hinge between the upper clamp 11 and the lower clamp 12. The hinge joint between the upper clamp 11 and the lower clamp 12 has an upper rotating cylinder 27, and the hinge joint between the lower clamp 12 and the upper clamp 11 has a lower rotating cylinder 28. One end of the upper rotating cylinder 27 is connected to one end of the lower rotating cylinder 28. An inner rotating cylinder 29 is installed inside the upper rotating cylinder 27, and a rotating seat 30 is provided inside the lower rotating cylinder 28. Alternatively, the inner rotating cylinder 29 is installed inside the lower rotating cylinder 28, and the rotating seat 30 is provided inside the upper rotating cylinder 27. A rotating shaft is provided on the rotating seat 30, and the inner rotating cylinder 29 is mounted on the rotating shaft. This structure greatly increases the structural strength and stability of the hinge and prevents the straightener from shifting left or right when the upper and lower clamps are closed.

[0047] Furthermore, in the hair straightener provided by the present invention, a torsion spring 31 is mounted on the rotating base 30, and the inner rotating cylinder 29 covers the torsion spring 31. Bolts are provided on the rotating base 30 and the inner rotating cylinder 29, and the bolts pass through the middle of the rotating base 30, the inner rotating cylinder 29, and the rotating shaft 34. The upper rotating cylinder 27 and the lower rotating cylinder 28 are connected by the bolts. The torsion spring 31 is used for the rebound after the straightener is clamped. Furthermore, in the hair straightener provided by the present invention, a positioning block 32 is provided on the outer side of the inner rotating cylinder 29, and a corresponding positioning groove 33 is provided on the upper rotating cylinder 27 or the lower rotating cylinder 28. When the inner rotating cylinder 29 is inserted into the upper rotating cylinder 27 or the lower rotating cylinder 28, the positioning block 32 is inserted into the corresponding positioning groove 33. In this embodiment, four positioning blocks 32 and four positioning slots 33 are provided. The inner rotating cylinder 29 is placed in the upper rotating cylinder 27. After the upper rotating cylinder 27 is connected to the lower rotating cylinder 28, the rotating shaft 34 and the torsion spring 31 are installed. Then, the inner rotating cylinder 29 is installed into the upper rotating cylinder 27, and the positioning blocks 32 are installed into the corresponding positioning slots 33 so that the inner rotating cylinder 29 can rotate with the upper rotating cylinder 27. Then, the two ends are fixed by bolts. This structure is not only stable in operation, but also easy to disassemble and assemble, which is conducive to improving production efficiency and maintenance convenience. Furthermore, in this embodiment, the two outer ends of the upper rotating cylinder 27 and the lower rotating cylinder 28 are also provided with covers 35, which are snap-fitted to the upper rotating cylinder 27 or the lower rotating cylinder 28.

[0048] In summary, the present invention can greatly reduce the contact area between the clamping plate component and the housing of the upper and lower clamping handles, and the space between them can facilitate temperature isolation. This makes it convenient for hand gripping and temperature control of the clamping plate. Furthermore, the guide groove allows the water vapor generated by high-temperature heating during wet hair styling to be discharged towards the baffle side along the guide groove. This not only helps to prevent the hair from being ruined by steam during styling, but also helps to prevent the scalp from being burned by steam.

[0049] In addition, this application also provides a method for controlling the temperature of a hair straightener, comprising the following steps: after the straightener plate reaches a preset temperature setting, heating is stopped; a stop timer is started; after the stop time reaches a preset stop time limit T1, heating continues, wherein T1 does not exceed 0.3 seconds; a continue timer is started; after the continue time reaches a preset continue time limit T2, heating is stopped, and the process returns to the step "start stop timer", wherein the continued heating power does not exceed half of the rated power of the straightener, and T2 does not exceed 0.10 seconds. This invention, by subdividing the heating power, reduces temperature fluctuations, which is beneficial for precise temperature control and reduces heat damage to the hair during the use of the straightener.

[0050] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A hair straightener, comprising an upper clamp and a lower clamp, wherein the upper clamp and the lower clamp are hinged together, and a main control board is disposed within the upper clamp or the lower clamp, characterized in that, A thermal clamping assembly is provided on the clamping side of the upper clamp and the lower clamp. The thermal clamping assembly includes a clamping plate component and a heating plate. A pair of connecting rails are provided on the clamping plate component. The clamping plate component is connected to the housing of the upper or lower clamp through the connecting rails. There is a receiving space between the clamping plate component and the housing of the upper or lower clamp connected to it. The heating plate is located between the two connecting rails and is fitted against the inner side of the clamping plate component. A guide groove is provided on the outer side of the clamping plate component. When the upper and lower clamps are clamped, the guide groove of the upper clamp and the corresponding guide groove of the lower clamp are spliced ​​together to form a tubular structure. A baffle is provided on the upper clamp and / or the lower clamp, and the baffle is located on the side where the end of the guide groove is located.

2. The hair straightener according to claim 1, characterized in that, The guide grooves on the clamping plate component are a pair and are arranged parallel to each other along the length direction of the clamping plate component. An inner baffle is provided at the front end of the upper clamping handle and an outer baffle is provided at the front end of the lower clamping handle. The inner baffle is located close to the clamping plate component and the outer baffle is located away from the clamping plate component. The inner baffle is spaced apart from the end of the guide groove and the outer baffle is spaced apart from the inner baffle. The height of the inner baffle is less than the height of the outer baffle.

3. The hair straightener according to claim 1, characterized in that, The clamping plate component has exposed sides that are in contact with the outside air.

4. The hair straightener according to claim 1, characterized in that, Within the accommodating space, a temperature sensor and a fuse are provided on the inner side of the heating plate, and the heating plate, temperature sensor, and fuse are electrically connected to the main control board.

5. The hair straightener according to claim 4, characterized in that, The connecting rail of the clamping plate component is equipped with a front frame and a rear frame. The front frame is installed above the temperature sensor, and the rear frame is installed above the fuse.

6. The hair straightener according to claim 5, characterized in that, The top of the connecting track is spaced apart from the inner side of the housing of the upper or lower clamping handle to which it is connected, and the front frame and the rear frame are provided with support feet between the inner side of the housing of the corresponding upper or lower clamping handle.

7. The hair straightener according to claim 6, characterized in that, The support leg is hemispherical, and the spherical surface of the support leg abuts against the front frame / rear frame. The bottom surface of the support leg is an annular surface that abuts against the inner side of the housing of the upper or lower clamping handle.

8. The hair straightener according to claim 1, characterized in that, The hinge between the upper clamping handle and the lower clamping handle has an upper rotating cylinder, and the hinge between the lower clamping handle and the upper clamping handle has a lower rotating cylinder. One end of the upper rotating cylinder is connected to one end of the lower rotating cylinder. An inner rotating cylinder is installed inside the upper rotating cylinder, and a rotating seat is provided inside the lower rotating cylinder; or, an inner rotating cylinder is installed inside the lower rotating cylinder, a rotating seat is provided inside the upper rotating cylinder, a rotating shaft is provided on the rotating seat, and the inner rotating cylinder is mounted on the rotating shaft.

9. A method for controlling the temperature of a hair straightener, characterized in that, Includes the following steps: The hair straightener stops heating once the plates reach the preset temperature. Start the stop timer; After the pause time reaches the preset pause time limit T1, heating continues, where T1 does not exceed 0.3 seconds; Resume timing; After the heating time reaches the preset duration T2, heating is stopped and the process returns to the "Start Stop Time Timing" step. The heating power during the heating process shall not exceed half of the rated power of the hair straightener, and T2 shall not exceed 0.10 seconds.

10. The method for controlling the temperature of a hair straightener according to claim 9, characterized in that, After the hair straightener reaches the preset temperature and the heating is stopped, the following steps are also included: The temperature of the hair straightener plate was oversampled; The moving average value is calculated based on the oversampled data and used as the current temperature feedback value.

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