Heating structure of rechargeable hair straightening comb

Abstract

The utility model aims to provide the charging hair straightening comb heating structure which is simple in circuit structure, does not need a plurality of groups of switch elements to switch the series-parallel connection relation, and can realize cooperative work to improve the heating efficiency. The heating device comprises a battery, a charging adapter, a heating film and a control module, a first heating resistor and a second heating resistor are arranged on the front face and the back face of the heating film respectively, the control module comprises a charging loop, a first power supply loop and a second power supply loop, the first heating film is connected with the battery through the first power supply loop, and the second heating film is connected with the battery through the second power supply loop. The second heating resistor is connected with the charging adapter through the second power supply loop, and the battery is connected with the charging adapter through the charging loop. The hair straightening comb is applied to the technical field of hair straightening combs.

Description

Technical Field

[0001] The utility model is applied to the technical field of straightening combs, and particularly relates to a heating structure of a rechargeable straightening comb. Background Art

[0002] A straightening comb softens hair by heating it, and applies a pulling force through the comb teeth during the heating process to straighten the hair. The hair gradually cools during the straightening process and thus maintains a relatively straight shape. Traditional straightening combs consist of a heating plate and heat-conducting comb teeth. The heating plate works by generating heat through a resistive heating element after being powered, and then transferring the heat to the heat-conducting comb teeth to conduct heat while combing the hair. Currently, due to the power limitation of the heating plate, most straightening combs on the market basically need to be driven by connecting to the mains power, with high power consumption and relatively limited use. In order to be able to adjust hair styling when going out or on a journey, using a rechargeable battery to supply power to the heating structure of the straightening comb can well solve the problem of no mains power connection. Existing rechargeable straightening combs usually use two ceramic heating elements for heating, and adapt different power supply states by switching the connection form of the two ceramic heating elements. When powered by the battery, the two ceramic heating elements are in parallel, and when powered by the adapter, the two ceramic heating elements are in series. Its overall structure is complex and requires multiple sets of switching elements for circuit switching. Moreover, the battery power supply and the adapter power supply can only work alternatively.

[0003] If a heating structure of a rechargeable straightening comb with a simple circuit structure, no need for multiple sets of switching elements to switch the series-parallel relationship, and capable of achieving collaborative work to improve the heating efficiency can be provided, it can well solve the technical problems of complex heating structure circuit and low thermal efficiency. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a heating structure of a rechargeable straightening comb with a simple circuit structure, no need for multiple sets of switching elements to switch the series-parallel relationship, and capable of achieving collaborative work to improve the heating efficiency.

[0005] The technical solution adopted by the utility model is as follows: The utility model includes a battery, a charging adapter, a heating film, and a control module. The front and back sides of the heating film are respectively provided with a first heating resistor and a second heating resistor. The control module includes a charging circuit, a first power supply circuit, and a second power supply circuit. The first heating resistor is connected to the battery through the first power supply circuit, the second heating resistor is connected to the charging adapter through the second power supply circuit, and the battery is connected to the charging adapter through the charging circuit.

[0006] As can be seen from the above solution, by setting the second heating resistor and directly connecting the heating resistor to the charging adapter, the second heating resistor is directly driven to generate heat. At the same time, the first heating resistor is connected to the battery to work, achieving the effect that the first heating resistor and the second heating resistor operate independently of each other. Furthermore, when used outdoors or without a charging adapter, the comb teeth of the hair straightener can be heated independently, making it convenient for users to use. When straightening hair with a charging adapter connected, the battery and the charging adapter supply power to the first heating resistor and the second heating resistor simultaneously, enabling the first heating resistor and the second heating resistor to operate at full power simultaneously, achieving the effect of collaborative work and increasing the heating power. Through the above structure, the circuit is simple, without the need for multiple switching components for series and parallel switching. At the same time, the power of each heating resistor can be maximized, and collaborative heating is achieved with independent power supply to improve the heating efficiency.

[0007] A preferred solution is that the first heating resistor and the second heating resistor are distributed in a continuous S shape on the heating film, and the resistance values of the second heating resistor and the first heating resistor are different.

[0008] A preferred solution is that the first power supply circuit includes a first field effect transistor, the second power supply circuit includes a second field effect transistor, the control module includes a processing chip, and the gates of the first field effect transistor and the second field effect transistor are respectively connected to two IO ports of the processing chip.

[0009] A preferred solution is that the control module further includes a power detection unit connected to the battery. The power detection unit includes a third field effect transistor. The control end of the third field effect transistor is connected to the positive electrode of the battery through a connection resistor, and the IO port of the processing chip is connected to the positive electrode of the battery through the third field effect transistor. Description of the Drawings

[0010] Figure 1 is a schematic diagram of the system structure of the present invention;

[0011] Figure 2 is a circuit schematic diagram of the control module;

[0012] Figure 3 is a circuit schematic diagram of the charging circuit;

[0013] Figure 4 is a circuit schematic diagram of the power detection unit. Detailed Embodiments

[0014] Such as Figures 1 to 4As shown in the figure, in this embodiment, the utility model includes a battery 1, a charging adapter 2, a heating film 3 and a control module 4. The front and back sides of the heating film 3 are respectively provided with a first heating resistor 31 and a second heating resistor 32. The control module 4 includes a charging circuit 41, a first power supply circuit 42 and a second power supply circuit 43. The first heating resistor 31 is connected to the battery 1 through the first power supply circuit 42, and the second heating resistor 32 is connected to the charging adapter 2 through the second power supply circuit 43. The battery 1 is connected to the charging adapter 2 through the charging circuit 41. The charging adapter 2 is electrically connected to the battery 1 through the charging circuit for charging, and the charging adapter 2 is connected to the 220V mains socket.

[0015] As Figure 2 shown in the figure, in this embodiment, the heating film 3 includes a high-temperature resistant encapsulation film. The first heating resistor 31 and the second heating resistor 32 are both flat resistance wires. Figure 2 Where PI1 is the first heating resistor 31 and PI2 is the second heating resistor 32. The first heating resistor 31 and the second heating resistor 32 are both encapsulated in the high-temperature resistant encapsulation film. One side of the high-temperature resistant encapsulation film is in contact with the heat-conducting comb teeth of the straightening comb and conducts heat. The first heating resistor 31 and the second heating resistor 32 are distributed in a continuous S shape on the heating film 3, so as to fully cover the heating film 3 and make the heating of the first heating resistor 31 and the second heating resistor 32 more uniform. The resistance value of the second heating resistor 32 is greater than that of the first heating resistor 31. The second heating resistor 32 is used to connect to the charging adapter 2 to work, and its working current and heat generation are less than that of the battery 1 power supply, so as to realize working in the form of external power supply using the charging adapter 2. The first heating resistor 31 adopts a small-resistance design to ensure that it can provide enough large power for heating in the mode of battery 1 power supply, and ensure the heating efficiency under the low-voltage working condition of the battery 1.

[0016] In this embodiment, the first power supply circuit 42 includes a first field effect transistor Q5, the second power supply circuit 43 includes a second field effect transistor Q2, the control module 4 includes a processing chip U4, and the gates of the first field effect transistor Q5 and the second field effect transistor Q2 are respectively connected to two IO ports of the processing chip U4. The processing chip U4 controls the gates of the first field effect transistor Q5 and the second field effect transistor Q2 through the K1A port and the K2A port respectively, so as to control the on and off of the two groups of heating resistors.

[0017] As Figure 4As shown, the control module 4 further includes a power detection unit connected to the battery 1. The power detection unit includes a third field-effect transistor Q3. The control terminal of the third field-effect transistor Q3 is connected to the positive electrode of the battery 1 through a connection resistor R19, and the IO port of the processing chip U4 is connected to the positive electrode of the battery 1 through the third field-effect transistor Q3. When the battery 1 has sufficient power, it provides voltage to the gate of the third field-effect transistor Q3 to turn on the circuit. The BATT AD port of the processing chip U4 collects the power of the battery 1, and then controls the first heating resistor 31 and the second heating resistor 32 to work simultaneously to generate collaborative heat and increase the heating power when the power is sufficient and the charging adapter 2 is connected.

[0018] The working principle of the present utility model:

[0019] When used outdoors, the processing chip U4 controls the first field-effect transistor Q5 to turn on, so that the battery 1 supplies power to the first heating resistor 31, and then heats the straightening comb teeth to straighten hair.

[0020] When the charging adapter 2 is connected, the charging adapter 2 charges the battery 1 through the charging circuit 41.

[0021] When the charging adapter 2 is connected and heating is started, the processing chip U4 controls the second field-effect transistor Q2 to turn on, and the charging adapter 2 supplies power to the second heating resistor 32, and then heats the straightening comb teeth to straighten hair. At the same time, the processing chip U4 synchronously turns on the first field-effect transistor Q5 according to the power value of the battery 1 collected by the power detection unit when the power value is sufficient, so that the battery 1 also supplies power to the first heating resistor 31 at the same time, thereby increasing the calorific value and achieving faster heating of the straightening comb teeth.

[0022] Although the embodiments of the present utility model are described with actual solutions, they do not constitute a limitation on the meaning of the present utility model. For those skilled in the art, modifications to its implementation solutions according to this specification and combinations with other solutions are obvious.

Claims

1. The heating structure of a charging straightening comb, which comprises a battery (1) and a charging adapter (2), is characterized in that: It further includes a heating film (3) and a control module (4). The front and back sides of the heating film (3) are respectively provided with a first heating resistor (31) and a second heating resistor (32). The control module (4) includes a charging circuit (41), a first power supply circuit (42) and a second power supply circuit (43). The first heating resistor (31) is connected to the battery (1) through the first power supply circuit (42), and the second heating resistor (32) is connected to the charging adapter (2) through the second power supply circuit (43). The battery (1) is connected to the charging adapter (2) through the charging circuit (41).

2. The heating structure of the charging straightening comb according to claim 1, wherein: The first heating resistor (31) and the second heating resistor (32) are distributed in a continuous S shape on the heating film (3), and the resistance value of the second heating resistor (32) is different from that of the first heating resistor (31).

3. The heating structure of the charging straightening comb according to claim 1, characterized in that: The first power supply circuit (42) includes a first field effect transistor (Q5), the second power supply circuit (43) includes a second field effect transistor (Q2), the control module (4) includes a processing chip (U4), and the gates of the first field effect transistor (Q5) and the second field effect transistor (Q2) are respectively connected to two IO ports of the processing chip (U4).

4. The heating structure of the charging hair straightener according to claim 3, wherein: The control module (4) further includes a power detection unit connected to the battery (1). The power detection unit includes a third field effect transistor (Q3). The control end of the third field effect transistor (Q3) is connected to the positive electrode of the battery (1) through a connection resistor (R19), and the IO port of the processing chip (U4) is connected to the positive electrode of the battery (1) through the third field effect transistor (Q3).

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