Hair straightener with hair thickness detection and temperature adjustment functions
By installing sensors on the hair straightener to detect hair thickness and automatically adjust the temperature, the problem of users having difficulty setting a suitable temperature is solved, achieving safe straightening and better results.
Patent Information
- Application Number
- CN202520311624.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-02-25
AI Technical Summary
When using existing clamp-on hair straighteners, it is difficult for users to set the appropriate temperature according to the thickness of their hair, which may lead to excessive heat and damage to the hair.
This hair straightener uses sensors to detect hair thickness and control the temperature of the upper and lower clips, achieving automatic adjustment to match hair thickness.
It avoids hair damage caused by unsuitable temperature, provides better straightening results, and automatically adjusts the temperature according to hair thickness.
Smart Images
Figure CN223900386U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to straightening iron technical field especially relates to a straightening iron with hair thickness detection and temperature regulation. BACKGROUND
[0002] Clamping type straightening iron is people's commonly used life article, when using, in order to straighten hair, a strand of hair is inserted into straightening iron, and hair is clamped between two heating plates. Through clamping force, two heating plates of straightening iron are mutually pressed together, and clamping force extrudes hair between two plates. User straightens hair through pulling force.
[0003] In prior art, clamping type straightening iron may be used when user lacks experience, and the thickness of hair and the thickness of clamped hair are not clear, and in initial use, temperature that does not match the thickness of hair is usually set, and hair may be damaged due to too high temperature when straightening. UTILITY MODEL CONTENT
[0004] The utility model aims at at least one of the technical problems in the related art to some extent. Therefore, one purpose of the utility model is to provide a straightening iron with hair thickness detection and temperature regulation.
[0005] To achieve the above purpose, the straightening iron with hair thickness detection and temperature regulation according to the utility model embodiment comprises:
[0006] The upper hair clamp is provided with an upper clamping piece;
[0007] The lower hair clamp is provided with a lower clamping piece, and the upper hair clamp or the lower hair clamp is further provided with a sensor;
[0008] The control circuit obtains the clamping angle of the upper hair clamp and the lower hair clamp through the sensor, obtains the hair thickness information through the clamping angle, and controls the temperature of the upper clamping piece and the lower clamping piece to the temperature corresponding to the hair thickness information.
[0009] Further, according to one embodiment of the utility model, the sensor is a linear sensor.
[0010] Further, according to one embodiment of the utility model, the sensor comprises any one or more of a hall sensor, an optical coupling sensor, an infrared sensor or a touch switch.
[0011] Further, according to one embodiment of the utility model, the straightening iron with hair thickness detection and temperature adjustment further comprises a magnet, the inductor is a linear Hall inductor, one of the upper hair clips or the lower hair clips is provided with the linear Hall inductor, and the other of the upper hair clips or the lower hair clips is provided with the magnet at a position opposite to the Hall inductor.
[0012] Further, according to one embodiment of the utility model, the control circuit comprises:
[0013] a controller;
[0014] an inductive circuit, the inductor is electrically connected with the controller through the inductive circuit, and the controller is used for acquiring the opening and closing states of the upper hair clip and the lower hair clip through the inductor;
[0015] a heating circuit, the heating circuit is connected with the controller, so that the upper clamping piece and the lower clamping piece are controlled in temperature under the control of the controller.
[0016] Further, according to one embodiment of the utility model, the heating circuit comprises:
[0017] a first heater;
[0018] a second heater, one end of the first heater and one end of the second heater are connected with one end of the power supply respectively;
[0019] a semiconductor switch, a passage first connection end of the semiconductor switch is connected with the other end of the first heater and the other end of the second heater respectively, a passage second connection end of the semiconductor switch is connected with the other end of the power supply, and a controlled end of the semiconductor switch is connected with a heating control signal output end of the controller; wherein the first heater is used for heating the upper clamping piece, and the second heater is used for heating the lower clamping piece.
[0020] Further, according to one embodiment of the utility model, the control circuit further comprises:
[0021] a voltage detection circuit, the voltage detection circuit is connected with the controller, the controller detects the voltage of the power supply through the voltage detection circuit, and the controller further controls the first heater and the second heater in heating according to the voltage of the power supply.
[0022] Further, according to one embodiment of the utility model, the control circuit further comprises:
[0023] A key control circuit, the key control circuit includes a control key, the control key is connected with the controller, to send control signal to the controller, the controller also carries out heating control according to the control signal to the first heating device, second heating device.
[0024] The straightening iron with hair thickness detection and temperature adjustment provided by the embodiment of the utility model, the upper clamp is equipped with an upper clamping piece, the lower clamp is equipped with a lower clamping piece, the upper clamp or the lower clamp is further equipped with an inductor, the control circuit obtains the clamping angle of the upper clamp and the lower clamp through the inductor, to obtain the hair thickness information through the clamping angle, and the temperature of the upper clamping piece and the lower clamping piece is controlled at the temperature corresponding to the hair thickness information. In this way, when straightening, the appropriate temperature can be automatically adjusted according to the thickness of the hair; the situation that the hair is damaged due to the unsuitable temperature of the upper clamping piece and the lower clamping piece can be avoided when using. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 The straightening iron with hair thickness detection and temperature adjustment provided by the utility model is shown in the upper clamp and the lower clamp in the open clamp state and the local section structure schematic view at A;
[0026] Figure 2 The A local enlarged structure schematic view of Figure 1
[0027] Figure 3 The straightening iron with hair thickness detection and temperature adjustment provided by the utility model is shown in the upper clamp and the lower clamp in the open clamp state and the local section structure schematic view at B;
[0028] Figure 4 The B local enlarged structure schematic view of Figure 3
[0029] Figure 5 The control circuit structure schematic view provided by the utility model;
[0030] Figure 6 Another open clamp state structure schematic view of the straightening iron with hair thickness detection and temperature adjustment provided by the utility model;
[0031] Figure 7 The linear relationship diagram of the output voltage and the magnetic field intensity of the linear Hall effect sensor provided by the utility model.
[0032] REFERENCE NUMERALS
[0033] The upper clamp 10;
[0034] The upper clamping piece 101;
[0035] The lower clamp 20;
[0036] lower clamping piece 201;
[0037] inductor 30;
[0038] magnet 40;
[0039] temperature plus / minus button 50.
[0040] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION
[0041] In order to make the personnel in the art better understand the utility model scheme, the technical scheme in the utility model embodiments will be described clearly and completely in combination with the drawings in the utility model embodiments below. Unless otherwise defined, all the technical and scientific terms used in this paper are the same as the meanings commonly understood by the personnel in the technical field to which the utility model belongs. The terms used in the specification of the utility model in this paper are only for the purpose of describing the specific embodiments and are not intended to limit the utility model.
[0042] In this paper, the reference to "embodiments" means that the specific features, structures or characteristics described in combination with the embodiments can be contained in at least one embodiment of the utility model. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment and is not an independent or alternative embodiment that is not mutually exclusive with other embodiments. The skilled in the art explicitly and implicitly understands that the embodiments described in this paper can be combined with other embodiments.
[0043] Reference is made to Figures 1 to 5The utility model embodiment provides a kind of straightener with hair thickness detection and temperature regulation, comprising: upper hair clip 10, lower hair clip 20 and control circuit, the upper hair clip 10 is equipped with upper clamp piece 101;The lower hair clip 20 is equipped with lower clamp piece 201, the upper hair clip 10 or the lower hair clip 20 is further equipped with inductor 30;The control circuit is used to obtain the opening and closing clamping state of the upper hair clip 10, lower hair clip 20 by the inductor 30, and the temperature control of the upper clamp piece 101, lower clamp piece 201 is according to the opening and closing clamping state of the upper hair clip 10, lower hair clip 20.It can be equipped with controller by the control circuit, and the detection signal of sensor is obtained by controller and the temperature control of upper clamp piece 101, lower clamp piece 201.So, the temperature of upper clamp piece 101, lower clamp piece 201 can be dynamically controlled by control circuit, and the damage of high temperature to hair root is reduced by saving suitable temperature in straightening control upper clamp piece 101, lower clamp piece 201;It can reach better straightening effect simultaneously.The control circuit obtains the clamping angle of the upper hair clip 10, lower hair clip 20 by the inductor 30, to obtain hair thickness information by the clamping angle and control the temperature of the upper clamp piece 101, lower clamp piece 201 at the temperature corresponding to the hair thickness information (clamping angle).In this embodiment, after control circuit detects that the upper hair clip 10, lower hair clip 20 are in closed state, the temperature of the upper clamp piece 101, lower clamp piece 201 can be automatically adjusted according to the size of clamping angle.To meet the heating requirement of different thickness hair when straightening.For example, in use, the control circuit also obtains the hair thickness information held between the upper clamp piece 101, lower clamp piece 201 according to the clamping angle, and controls the temperature of the upper hair clip 10, lower hair clip 20 at the temperature corresponding to the hair thickness information;Wherein, the greater the hair thickness held between the upper clamp piece 101, lower clamp piece 201, the higher the heating temperature of the upper hair clip 10, lower hair clip 20.This can ensure that suitable temperature can be output according to the thickness of hair when straightening, to avoid the damage of hair due to unsuitable temperature of upper clamp piece 101, lower clamp piece 201 when using.This way, by detecting the thickness of user's hair, automatically adjust to the temperature gear suitable for specific user, help user to reduce the situation of damaging hair due to using wrong temperature to pull hair.
[0044] Specific embodiment is, when different hair thickness is to be distinguished, different thickness hair can be placed in straightener clamp piece and clamped during product design, and different gear sensors (for example linear hall effect inductor 30) can obtain the voltage value corresponding to hair thickness, and store in controller.By comparing the voltage value output by sensor and the voltage value stored in chip, the controller can judge the thickness of hair when user uses straightener.
[0045] Preferably, in one embodiment of the utility model, the straightening iron with hair thickness detection and temperature adjustment further comprises a magnet 40, the inductor 30 is a linear Hall inductor 30, one of the upper hair clip 10 or the lower hair clip 20 is provided with the linear Hall inductor 30, and the other one of the upper hair clip 10 or the lower hair clip 20 is provided with the magnet 40 at the position opposite to the linear Hall inductor 30.
[0046] The output signal level of the linear Hall effect sensor is determined by the magnetic field intensity applied to the sensitive surface of the device, which varies proportionally with the magnetic field intensity (as shown in Figure 6 When it is in the zero magnetic field condition, the output voltage is half of its power supply voltage. When the S magnetic pole appears on the marked surface, the output voltage will linearly increase with the increase of the magnetic field intensity, and conversely, the N magnetic pole will linearly decrease the output voltage with the increase of the magnetic field intensity. By using this characteristic of the linear Hall effect sensor, the Hall sensor assembly and the magnetic component are respectively installed at the relative positions of the opening and closing of the upper and lower clamps of the straightening iron. When the hair is pulled, the thickness of the hair is different, so the closing degree of the upper and lower clamps 201 is different, and the distance between the magnetic component and the Hall sensor assembly is also different. The magnetic flux sensed by the Hall sensor assembly is different, and the Hall sensor assembly converts the sensed magnetic flux into a corresponding voltage output. The voltage value output by the Hall sensor assembly is measured by the MCU signal detection pin, so that the thickness of the hair can be determined. For example: (when the S magnetic pole of the magnet 40 is assembled towards the Hall effect sensor) when the straightening iron is completely opened, the upper and lower clamps 201 are far apart, and the magnetic flux sensed by the Hall effect sensor is almost zero, and at this time the Hall effect sensor outputs 2.5V. When the straightening iron is closed, the magnet 40 gradually approaches the Hall effect sensor, and at this time the Hall effect sensor outputs a voltage between 2.5V and 4V, and the closer the distance, the higher the voltage.
[0047] When different hair thicknesses are to be distinguished, different thicknesses of hair can be placed in the clamp of the straightening iron and clamped during product design, and the voltage value corresponding to the hair thickness of the output of the Hall effect sensor at different gears is obtained and stored in the MCU. When the user uses the straightening iron, the MCU compares the voltage value output by the Hall effect sensor with the voltage value stored in the chip, so that the thickness of the hair can be determined.
[0048] In other embodiments, the inductor 30 can also be any one or more of an optical coupling sensor, an infrared sensor or a touch switch. It should be noted that in some other embodiments of the utility model, other unlisted sensors can be used according to actual application needs, which will not be described one by one.
[0049] Referring to Figure 5The control circuit comprises a controller, an inductor circuit and a heating circuit. The inductor 30 is electrically connected to the controller through the inductor circuit. The controller is used to acquire the opening and closing state of the upper and lower hair clips 10 and 20 through the inductor 30. The heating circuit is connected to the controller to control the temperature of the upper and lower clamping pieces 101 and 201 under the control of the controller.
[0050] As shown in Figure 5 The inductor circuit can comprise an inductor U3 (30). The power supply end and the ground end of the inductor U3 (30) can be connected through a capacitor C14 to ensure the stability of the power supply of the inductor U3 (30). The signal detected by the inductor U3 (30) is output to the detection end of the controller U1 through a resistor R12, so that the controller U1 can acquire the angle information between the upper and lower hair clips 10 and 20.
[0051] As shown in Figure 5 The heating circuit comprises a first heater Hearter1, a second heater Hearter2 and a semiconductor switch. One end of the first heater Hearter1 and one end of the second heater are respectively connected to one end of a power supply. The passage first connection end of the semiconductor switch is respectively connected to the other end of the first heater and the other end of the second heater Hearter2. The passage second connection end of the semiconductor switch is connected to the other end of the power supply. The controlled end of the semiconductor switch is connected to the heating control signal output end of the controller. The first heater Hearter1 is used to heat the upper clamping piece 101, and the second heater Hearter2 is used to heat the lower clamping piece 201.
[0052] The working process of the heating circuit is that when the controller U1 needs to control the temperature rise of the upper clamp 101 and the lower clamp 201, a trigger signal can be output to the semiconductor switch through the resistor R30, the diode D3 and the resistor R26. The semiconductor switch can be a bidirectional triode thyristor or a unidirectional triode thyristor. In this embodiment, a bidirectional triode thyristor TRIAC1 is used for illustration. The control end of the bidirectional triode thyristor TRIAC1 can control the conduction of the two ends of the bidirectional triode thyristor TRIAC1 under the action of the trigger signal of the controller, so that the circuit of the parallel first heater Heartner1 and the second heater Heartner2 is conducted, the first heater Heartner1 and the second heater Heartner2 generate heat, and the upper clamp 101 and the lower clamp 201 are heated, respectively. In this way, the upper clamp 101 and the lower clamp 201 can be controlled to rise in temperature by the controller. The heating circuit can also include a current detection circuit for detecting the current on the heating circuit. The current detection circuit includes a resistor R29 connected in series on the heating circuit to detect the current of the circuit, and the current information collected is transmitted to the controller through the resistor R28. The capacitor C8 can filter out the interference signal in the current detection signal. In addition, the resistor R19 and the capacitor C10 are connected in parallel between the control end of the bidirectional triode thyristor TRIAC1 and the second connection end T2 of the channel of the bidirectional triode thyristor TRIAC1. The capacitor 10 can filter out the interference signal in the control end of the bidirectional triode thyristor TRIAC1. The resistor R19 can provide a pull-down to the control end of the bidirectional triode thyristor TRIAC1 to a low level.
[0053] Referring to Figure 5 , the control circuit further includes a voltage detection circuit connected with the controller, the controller detects the voltage of the power supply through the voltage detection circuit, and the controller further controls the heating of the first heater and the second heater according to the voltage of the power supply. As Figure 5 shown in the figure, the voltage detection circuit can include a resistor R24 and a resistor R25, one end of the resistor R24 is connected with one end of the input power supply, the other end of the resistor R24 is connected with one end of the resistor R25, and the other end of the resistor R25 is connected with the other end of the input power supply; a voltage dividing circuit is formed between the resistor R24 and the resistor R25, and the input power supply is input to the voltage detection end of the controller after being divided. In this way, the controller can obtain the voltage of the input power supply, and output a corresponding pulse width signal according to the size of the input voltage to control the power of the first heater Heartner1 and the second heater Heartner2. Thus, the heating and temperature rise of the upper clamp 101 and the lower clamp 201 can be better controlled.
[0054] Referring to Figure 5 , the control circuit further comprises a key control circuit, the key control circuit comprises a control key, the control key is connected with the controller to send a control signal to the controller, and the controller further controls the first heater and the second heater according to the control signal. The key signal can be input to the key detection end of the controller through the control key. In this way, the controller can obtain the corresponding control signal, and output the corresponding pulse width signal according to the control signal to control the power of the first heater Heartner1 and the second heater Heartner2. Therefore, the heating and temperature rising of the upper clamping piece 101 and the lower clamping piece 201 can be better controlled.
[0055] Referring to Figure 5 , the control circuit further comprises a voltage conversion circuit, and the input power can be converted into the power supply VCC of the controller, the inductor 30 and the key control circuit through the voltage conversion circuit.
[0056] Referring to Figure 6 , the temperature automatic control straightening iron provided by the embodiment of the present application can further be provided with a plurality of keys, for example, temperature increase and decrease gear keys and on-off keys. The temperature increase and decrease gear keys control the temperature increase or decrease of the upper clamping piece 101 and the lower clamping piece 201. The on-off keys control the on-off of the temperature automatic control straightening iron. The temperature automatic control straightening iron can further be provided with an LED indicator and an LED lamp cover. The working state of the straightening iron can be indicated through the LED lamp cover by the LED indicator.
[0057] The above is only an embodiment of the present application, but does not limit the patent range of the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some technical features. Any equivalent structure made by referring to the content of the present application specification and drawings, directly or indirectly applied to other related technical fields, is also within the patent protection range of the present application.
[0058] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0059] Although the above has shown and described the embodiments of the present application, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and the ordinary skilled in the art can change, modify, replace and transform the above embodiments without departing from the principles and purposes of the present application within the scope of the present application, which are all within the protection scope of the present application.
Claims
1. A straightening iron with hair thickness detection and temperature adjustment, characterized in that, The utility model relates to a hair clipper, which comprises: an upper hair clip provided with an upper clamping piece; a lower hair clip provided with a lower clamping piece, and the upper hair clip or the lower hair clip is further provided with a sensor; a control circuit, which acquires the clamping angle of the upper hair clip and the lower hair clip through the sensor, acquires the hair thickness information through the clamping angle, and controls the temperature of the upper clamping piece and the lower clamping piece to be the temperature corresponding to the hair thickness information.
2. The straightening iron with hair thickness detection and temperature adjustment of the head according to claim 1, characterized in that, The sensor is a linear sensor.
3. The straightening iron with hair thickness detection and temperature adjustment of the head according to claim 2, characterized in that, The sensor includes any one or more of a Hall sensor, an optical coupling sensor, an infrared sensor, or a touch switch.
4. The straightening iron with hair thickness detection and temperature adjustment of the head according to claim 3, characterized in that, The utility model further comprises a magnet, the sensor is a linear Hall sensor, one of the upper hair clip or the lower hair clip is provided with the linear Hall sensor, and the other of the upper hair clip or the lower hair clip is provided with the magnet at a position opposite to the Hall sensor.
5. The straightening iron with hair thickness detection and temperature adjustment of any one of claims 1 to 4, wherein, The control circuit comprises: a controller; a sensing circuit, the sensor is electrically connected to the controller through the sensing circuit, and the controller is used to acquire the opening and closing state of the upper hair clip and the lower hair clip through the sensor; a heating circuit, which is connected to the controller to control the temperature of the upper clamping piece and the lower clamping piece under the control of the controller.
6. The straightening iron with hair thickness detection and temperature adjustment of the band head according to claim 5, characterized in that, The heating circuit comprises: a first heater; a second heater, one end of the first heater and one end of the second heater are connected to one end of a power supply; a semiconductor switch, the other end of the first heater and the other end of the second heater are connected to the passage first connection end of the semiconductor switch, the other end of the power supply is connected to the passage second connection end of the semiconductor switch, and the controlled end of the semiconductor switch is connected to the heating control signal output end of the controller; wherein the first heater is used to heat the upper clamping piece, and the second heater is used to heat the lower clamping piece.
7. The straightening iron with hair thickness detection and temperature adjustment of the band head according to claim 6, characterized in that, The control circuit further comprises: a voltage detection circuit, which is connected to the controller, and the controller detects the voltage of the power supply through the voltage detection circuit, and the controller further controls the heating of the first heater and the second heater according to the voltage of the power supply.
8. The straightening iron with hair thickness detection and temperature adjustment of the band head according to claim 6 or 7, characterized in that, The control circuit further comprises: a key control circuit, which comprises a control key, and the control key is connected to the controller to send a control signal to the controller, and the controller further controls the heating of the first heater and the second heater according to the control signal.