Curling comb

Abstract

The utility model discloses a curly hair comb, including comb main part, the comb main part is equipped with first comb tooth, heating element, MCU, voltage detection module and power supply input terminal, MCU is respectively with voltage detection module, power supply input terminal, heating element electrical connection, voltage detection module also is electrically connected with power supply input terminal. The power input end is used for being externally connected with a power supply, and the voltage detection module feeds back different detection voltages to the MCU according to different voltages input by the power input end. The MCU judges whether the voltage of the power input end is larger than or smaller than the first preset voltage according to the detection voltage and switches the corresponding AD conversion module to convert the power input by the power input end into the second preset voltage so as to drive the heating body to heat, so that when different voltages are input into the power input end, the voltages can be converted into voltages matched with the heating body. Therefore, the curling comb not only can be adapted to domestic commercial power 220V voltage, but also can be adapted to foreign voltage, the practicability of the curling iron is improved, and the requirement of people for going out of the country for use is met.

Description

Technical Field

[0001] This utility model relates to the technical field of styling tools, and in particular to a curling comb. Background Technology

[0002] As we all know, an electric curling brush is a hair styling tool used to curl and set hair. Furthermore, with the improvement of people's living standards and the increasing number of people traveling abroad, traditional curling brushes are generally only compatible with domestic mains power, which cannot meet the needs of people using them overseas, thus limiting their use.

[0003] Therefore, there is an urgent need on the market for a curling comb that is compatible with global voltage. Utility Model Content

[0004] The main purpose of this utility model is to provide a curling comb that solves the problem that existing curling combs are only suitable for domestic mains power and cannot meet the needs of overseas use.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A curling comb includes a comb body, on which a first comb tooth, a heating element, an MCU, a voltage detection module, and a power input terminal are provided. The MCU is electrically connected to the voltage detection module, the power input terminal, and the heating element, respectively. The voltage detection module is also electrically connected to the power input terminal.

[0007] The power input terminal is used to connect an external power supply. The voltage detection module feeds back different detection voltages to the MCU based on the different voltages input to the power input terminal. The MCU determines whether the voltage at the power input terminal is greater than or less than a first preset voltage based on the detection voltage and switches the corresponding AD conversion module accordingly to convert the power input at the power input terminal into a second preset voltage to drive the heating element to generate heat.

[0008] Furthermore, the voltage detection module includes a first resistor and a second resistor, the power input terminal is grounded via the first resistor and the second resistor in sequence, and the MCU is electrically connected to the output terminal of the first resistor.

[0009] Furthermore, it also includes a temperature detection unit. The MCU is also electrically connected to the temperature detection unit. The temperature detection unit is used to detect the temperature of the heating element and generate a corresponding temperature signal based on the temperature and feed it back to the MCU. The MCU adjusts the voltage output to the heating element based on the temperature signal.

[0010] Furthermore, the comb body is also equipped with a negative ion generator that is electrically connected to the MCU and used to generate negative ions.

[0011] Furthermore, the comb body includes a handle and a comb head connected to the handle. The first comb teeth are at least partially disposed on the outer side of the comb head. The heating element is disposed inside the comb head. A circuit board is disposed inside the handle. The MCU and voltage detection module are both integrated on the circuit board.

[0012] Furthermore, the comb includes an aluminum tube, and the interior of the aluminum tube has first insertion slots on both opposite sides. There are two heating elements, each placed in one of the first insertion slots. The temperature detection unit is located inside the aluminum tube.

[0013] Furthermore, the aluminum cylinder is provided with second comb teeth on its opposite outer side walls. The diameter of the second comb teeth is larger than that of the first comb teeth, and the first comb teeth are made of hard, long hair.

[0014] Furthermore, the comb also includes a fixing rod disposed inside an aluminum tube, the aluminum tube having multiple through holes, one end of the stiff long hair being fixed to the fixing rod, and the other end passing through the through holes and placed outside the aluminum tube.

[0015] Furthermore, the aluminum cylinder has a second insertion groove on each of its opposite outer side walls. The second insertion groove is C-shaped. The comb head also includes an insertion strip. The second comb teeth are disposed on the insertion strip, and the insertion strip is placed in the second insertion groove.

[0016] Furthermore, the comb head also includes connectors at both ends of the aluminum tube. The handle includes a face shell and a bottom shell connected to the face shell to form a mounting cavity. A connecting ear is provided on the connector near one end of the handle. A first column is provided on the face shell and a second column is provided on the bottom shell and located in the mounting cavity. The end of the first column protrudes to form a plug-in post. The connecting ear is sleeved on the plug-in post. The connector is at least partially placed in the mounting cavity and fixed when the face shell and the bottom shell are connected. The connecting ear is pressed by the first column and the second column when the face shell and the bottom shell are connected. A wiring hole communicating with the mounting cavity and the interior of the aluminum tube is provided on the connector.

[0017] This invention has the following advantages: Compared with the prior art, this invention uses a voltage detection module in conjunction with an MCU. The voltage detection module detects the voltage at the power input terminal and feeds the detected voltage back to the MCU. The MCU determines whether the voltage input at the power input terminal is greater than or less than a first preset voltage and switches to an AD conversion module adapted to the power input at the power input terminal. This converts the power input at the power input terminal into a second preset voltage adapted to the heating element. This allows the curling iron to be converted into a voltage adapted to the heating element when different voltages are input at the power input terminal. As a result, the curling iron can be adapted not only to the domestic 220V mains voltage but also to voltages different from those in China, improving its practicality and meeting the needs of people using it abroad. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a perspective view of the present utility model;

[0020] Figure 2 This is an exploded view of the handle and comb head of this utility model;

[0021] Figure 3 This is a cross-sectional view of the present invention taken along the center line of the first column;

[0022] Figure 4 This is an exploded view of the comb of this utility model;

[0023] Figure 5 This is a cross-sectional view of the comb head of this utility model, cut along the center line of the second comb tooth;

[0024] Figure 6 This is an exploded view of the handle of this utility model;

[0025] Figure 7 This is a circuit block diagram of the present invention;

[0026] Figure 8 This is a circuit diagram of the voltage detection module of this utility model;

[0027] Figure 9 This is a circuit diagram of the temperature detection unit of this utility model;

[0028] Figure 10This is a circuit diagram of the MCU of this utility model. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.

[0030] See attached document Figures 1 to 10 This invention relates to a curling comb.

[0031] The curling comb includes a comb body 100, on which are arranged first comb teeth 3, a heating element 6, an MCU 81, a voltage detection module 82, and a power input terminal 1. The MCU 81 is electrically connected to the voltage detection module 82, the power input terminal 1, and the heating element 6. The voltage detection module 82 is also electrically connected to the power input terminal 1. The power input terminal 1 is used to connect to an external power supply. The voltage detection module 82 feeds back different detection voltages to the MCU 81 according to different voltages input to the power input terminal 1. The MCU 81 determines whether the voltage of the power input terminal 1 is greater than or less than a first preset voltage based on the detection voltage and switches the corresponding AD conversion module accordingly to convert the power input to the power input terminal 1 into a second preset voltage to drive the heating element 6 to heat up.

[0032] This invention utilizes a voltage detection module 82 in conjunction with an MCU 81. The voltage detection module 82 detects the voltage at the power input terminal 1 and feeds back the detected voltage to the MCU 81. Based on this detected voltage, the MCU 81 determines whether the voltage input at the power input terminal 1 is greater than or less than a first preset voltage and switches to an AD conversion module adapted to the power input at the power input terminal 1. This converts the power input at the power input terminal 1 into a second preset voltage adapted to the heating element 6. This ensures that the curling iron can be converted to the appropriate voltage for the heating element 6 regardless of the input voltage at the power input terminal 1. Therefore, the curling iron can be adapted not only to the domestic 220V AC mains voltage but also to voltages different from those in other countries, improving its applicability and meeting the needs of people using it abroad.

[0033] Specifically, power input terminal 1 is the power line used for external power supply in the curling comb. MCU81 can be a chip with an 8-bit CPU core and FLASH memory and / or EEPROM memory, or it can be a chip with an ARM architecture, such as MC32F7071 or MC32F7073. That is, MCU81 can determine whether the voltage at power input terminal 1 is lower or higher than a first preset voltage based on the detection voltage fed back by voltage detection module 82. When it is determined that the voltage input at power input terminal 1 is lower than the first preset voltage, it is determined that the voltage input at power input terminal 1 is 120V, and MCU81 internally switches to an AD conversion circuit adapted to 120V to output a voltage matching the heating element 6 to the heating temperature. Conversely, when MCU81 determines that the voltage input at power input terminal 1 is higher than the first preset voltage, it is determined that the voltage input at power input terminal 1 is 220V, and MCU81 internally switches to an AD conversion module adapted to 220V to output a voltage matching the heating element 6 to the heating temperature. Currently, the electricity used by citizens in various countries is generally 220V or 120V, meaning that the first preset voltage can be configured as 150V, 165V, 180V, etc., and no limit is imposed on the first preset voltage here.

[0034] In one embodiment, the voltage detection module 82 can be a voltage divider circuit, that is, the voltage detection module 82 includes a first resistor R1 and a second resistor R2. The power input terminal 1 is grounded through the first resistor R1 and the second resistor R2 in sequence. The MCU 81 is electrically connected to the output terminal of the first resistor R1, that is, electrically connected to the input terminal of the second resistor R2. When different voltages are input to the power input terminal 1, after voltage division by the first resistor R1 and the second resistor R2, different detection voltages can be fed back to the MCU 81. Based on the detection voltage, the MCU 81 can determine whether the voltage input to the power input terminal 1 is greater than or less than a first preset voltage. Of course, in other embodiments, the voltage detection module 82 can also adopt an integrating circuit, an amplifying circuit, etc., which can also realize the detection of the voltage input to the power input terminal 1 and feed it back to the MCU 81.

[0035] In one embodiment, the curling comb further includes a temperature detection unit 83, and the MCU 81 is electrically connected to the temperature detection unit 83. The temperature detection unit 83 is used to detect the temperature of the heating element 6 and generate a corresponding temperature signal based on the temperature, which is then fed back to the MCU 81. The MCU 81 adjusts the voltage output to the heating element 6 according to the temperature signal to ensure that the heating element 6 generates a constant temperature. Specifically, the temperature detection unit 83 can be a temperature sensor, a thermistor, etc. The MCU 81 can also output a second preset voltage to the temperature detection unit 83 to prevent the temperature detection unit 83 from being damaged when different voltages are input to the power input terminal 1, and to ensure that the temperature detection unit 83 operates normally.

[0036] In one embodiment, the comb body 100 is also provided with a function button that is electrically connected to the MCU81. When the user operates the function button, it can be used to turn the device on or off, or the MCU81 can adjust the driving voltage output to the heating element 6 to adjust the temperature of the heating element 6.

[0037] In one embodiment, the comb body 100 is also provided with a display 85 electrically connected to the MCU 81 to display the temperature of the heating element 6, so that the user can understand the temperature status of the heating element 6 and make it convenient for the user to use.

[0038] In one embodiment, the comb body 100 is further provided with a negative ion generator 9, which is electrically connected to the MCU 81 and used to generate negative ions. When the user uses the curling comb of this invention to style hair, the negative ions generated by the negative ion generator 9 can be used to neutralize the static electricity generated during styling, thereby reducing frizziness in the hair. Specifically, the MCU 81 can also drive the negative ion generator 9 to work with a second preset voltage output.

[0039] In one embodiment, the comb body 100 includes a handle 2 and a comb head connected to the handle 2. The first comb teeth 3 are at least partially disposed on the outer side of the comb head. The handle 2 is for the user to hold, facilitating hair styling using the comb head. A heating element 6 is disposed inside the comb head to transfer its temperature to the hair, thus styling the hair in conjunction with the comb head. Specifically, the heating element 6 can be a PCT heating element or a heating wire, etc. A circuit board 8 is disposed inside the handle 2, integrating an MCU 81 and a voltage detection module 82, simplifying the internal components of the handle 2 and facilitating manufacturing.

[0040] In one embodiment, the comb includes an aluminum tube 5. It should be noted that the aluminum tube 5 is made of aluminum, which has good thermal conductivity, so that when the heating element 6 heats up, it can better transfer the temperature to the hair, so that the user can style the hair.

[0041] In one embodiment, the aluminum cylinder 5 has first insertion slots 54 on both opposite sides inside. There are two heating elements 6, each placed within a first insertion slot 54. A temperature detection unit 83 is disposed inside the aluminum cylinder 5 to fix the heating elements 6 in place and to ensure contact between the heating elements 6 and the aluminum cylinder 5 for heat conduction. Of course, in other embodiments, the comb can use a cylinder made of other materials, and the number of heating elements 6 can be one, three, etc.

[0042] In one embodiment, the aluminum cylinder 5 has second comb teeth 4 on its opposite outer side walls. The diameter of the second comb teeth 4 is larger than the diameter of the first comb teeth 3, which are made of stiff, long bristles. The stiff, long bristles are used to help the user style and fix their hair, while the second comb teeth 4 facilitate combing. Specifically, the stiff, long bristles can be bristles or artificial hair, and the second comb teeth 4 can be made of plastic or metal, etc.

[0043] In one embodiment, the comb also includes a fixing rod 31 disposed inside the aluminum tube 5. The aluminum tube 5 has multiple through holes 53. One end of the bristles is fixed to the fixing rod 31, and the other end passes through the through holes 53 and is placed outside the aluminum tube 5 to fix the hard long hairs and make the structure of the curling comb of this utility model more compact.

[0044] In one embodiment, the aluminum cylinder 5 has a second insertion groove 55 on each of the opposite outer side walls. The second insertion groove 55 is C-shaped. The comb head also includes an insertion strip 41. The second comb teeth 4 are disposed on the insertion strip 41. The insertion strip 41 is placed in the second insertion groove 55 to limit the insertion strip 41 and fix the second comb teeth 4 to the aluminum cylinder 5 through the insertion strip 41.

[0045] In one embodiment, the comb also includes connectors 51 at both ends of the aluminum tube 5. The handle 2 includes a face shell 21 and a bottom shell 22 connected to the face shell 21 to form a mounting cavity 20. The circuit board 8 and the negative ion generator 9 are both disposed within the mounting cavity 20. A connecting ear 52 is provided on the connector 51 near one end of the handle 2. A first column 211 located within the mounting cavity 20 is provided on the face shell 21, and a second column 221 located within the mounting cavity 20 is provided on the bottom shell 22. The end of the first column 211 protrudes to form a plug-in post 212. The connecting ear 52 is sleeved on the plug-in post 212. The connector 51 is at least partially placed within the mounting cavity 20 and fixed when the face shell 21 and the bottom shell 22 are connected. The connecting ear 52 is pressed together by the first column 211 and the second column 221 when the face shell 21 and the bottom shell 22 are connected. In this way, the comb can be stably connected to the handle 2. The connector 51 has a wiring hole (not shown in the figure) that communicates with the mounting cavity 20 and the interior of the aluminum cylinder 5. The wiring hole allows the wires connecting the circuit board 8 and the heating element 6 to pass through, so as to realize the electrical connection between the circuit board 8 and the heating element 6.

[0046] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0047] Furthermore, the use of terms such as "first" and "second" in this utility model is 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 term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When 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 utility model.

[0048] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A curling comb, characterized in that, The device includes a comb body, on which a first comb tooth, a heating element, an MCU, a voltage detection module, and a power input terminal are provided. The MCU is electrically connected to the voltage detection module, the power input terminal, and the heating element, respectively. The voltage detection module is also electrically connected to the power input terminal. The power input terminal is used to connect an external power supply. The voltage detection module feeds back different detection voltages to the MCU based on the different voltages input to the power input terminal. The MCU determines whether the voltage at the power input terminal is greater than or less than a first preset voltage based on the detection voltage and switches the corresponding AD conversion module accordingly to convert the power input at the power input terminal into a second preset voltage to drive the heating element to generate heat.

2. The curling comb according to claim 1, characterized in that, The voltage detection module includes a first resistor and a second resistor. The power input terminal is grounded via the first resistor and the second resistor in sequence. The MCU is electrically connected to the output terminal of the first resistor.

3. The curling comb according to claim 1, characterized in that, It also includes a temperature detection unit, and the MCU is electrically connected to the temperature detection unit. The temperature detection unit is used to detect the temperature of the heating element and generate a corresponding temperature signal based on the temperature and feed it back to the MCU. The MCU adjusts the voltage output to the heating element based on the temperature signal.

4. The curling comb according to any one of claims 1-3, characterized in that, The comb body is also equipped with a negative ion generator that is electrically connected to the MCU and is used to generate negative ions.

5. The curling comb according to claim 3, characterized in that, The comb body includes a handle and a comb head connected to the handle. The first comb teeth are at least partially disposed on the outer side of the comb head. The heating element is disposed inside the comb head. A circuit board is disposed inside the handle. The MCU and voltage detection module are both integrated on the circuit board.

6. The curling comb according to claim 5, characterized in that, The comb includes an aluminum tube, and the interior of the aluminum tube has first insertion slots on both opposite sides. There are two heating elements, each placed in one of the first insertion slots. The temperature detection unit is located inside the aluminum tube.

7. The curling comb according to claim 6, characterized in that, The aluminum cylinder is provided with second comb teeth on its opposite outer side walls. The diameter of the second comb teeth is larger than that of the first comb teeth, and the first comb teeth are made of hard, long hair.

8. The curling comb according to claim 7, characterized in that, The comb also includes a fixing rod disposed inside an aluminum tube. The aluminum tube has multiple through holes. One end of the stiff long hair is fixed to the fixing rod, and the other end passes through the through hole and is placed outside the aluminum tube.

9. The curling comb according to claim 7, characterized in that, The aluminum cylinder has a second insertion groove on each of its opposite outer side walls. The second insertion groove is C-shaped. The comb head also includes an insertion strip. The second comb teeth are disposed on the insertion strip, and the insertion strip is placed in the second insertion groove.

10. The curling comb according to claim 5, characterized in that, The comb head also includes connectors at both ends of the aluminum tube. The handle includes a face shell and a bottom shell connected to the face shell to form a mounting cavity. A connecting ear is provided on the connector near one end of the handle. A first column is provided on the face shell and located inside the mounting cavity. A second column is provided on the bottom shell and located inside the mounting cavity. The end of the first column protrudes to form a plug-in post. The connecting ear is sleeved on the plug-in post. The connector is at least partially placed inside the mounting cavity and fixed when the face shell and the bottom shell are connected. The connecting ear is pressed together by the first column and the second column when the face shell and the bottom shell are connected. The connector has a wiring hole that communicates with the mounting cavity and the interior of the aluminum tube.

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