A type of hair growth comb

Abstract

This utility model discloses a hair growth comb, including a housing, a main control module, a first comb tooth module, and a second comb tooth module. The main control module is disposed within the housing, and the first and second comb tooth modules are detachably connected to the housing. The first comb tooth module includes a sub-control module. The signal output terminal of the sub-control module is connected to the signal input terminal of the main control module, and the signal input terminal of the sub-control module is connected to the signal output terminal of the main control module. Firstly, the detachable comb tooth modules reduce the size of the hair growth comb. Secondly, by setting the sub-control module on the comb tooth modules that require separate control, the number of connections between the comb tooth modules and the main control module of the hair growth comb is reduced, thereby improving the stability of the hair growth comb.

Description

Technical Field

[0001] This utility model relates to the field of hair health, and more particularly to a hair health comb. Background Technology

[0002] With the development of hair growth combs, their functions have become increasingly diverse. For example, hair growth combs can provide light therapy and massage to the scalp to stimulate hair growth. However, the increase in functional modules has led to larger and larger hair growth combs, which in turn has resulted in less stable functionality.

[0003] The existing multi-functional hair combs have poor stability, which has become a technical problem that urgently needs to be solved in the industry. Utility Model Content

[0004] This utility model provides a hair growth comb to solve the problems of poor stability and poor user experience of existing hair growth combs.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model provides a hair growth comb, including: a housing, a main control module, a first comb tooth module, and a second comb tooth module; the main control module is disposed inside the housing, and the first and second comb tooth modules are detachably connected to the housing, the first comb tooth module including a sub-control module; wherein, the signal output terminal of the sub-control module is connected to the signal input terminal of the main control module, and the signal input terminal of the sub-control module is connected to the signal output terminal of the main control module.

[0007] Optionally, both the first comb module and the second comb module include a signal input terminal and a signal output terminal. The signal input terminal of the first comb module is connected to the signal output terminal of the main control module, and the signal output terminal of the first comb module is connected to the signal input terminal of the main control module. The signal input terminal and the signal output terminal of the second comb module are short-circuited.

[0008] Optionally, the first comb module further includes a light-emitting unit and a micro-current unit; the light-emitting unit is electrically connected to the sub-control module, and the micro-current unit is electrically connected to the sub-control module.

[0009] Optionally, the light-emitting unit includes an LED light source, a laser light source, and a light source driving circuit;

[0010] The light source driving circuit includes a filtering section, a comparator section, and a switching section. The switching section includes a first switching transistor, the second terminal of which is grounded through a sampling resistor. The input terminal of the filtering section is connected to the sub-control module, the output terminal of the filtering section is connected to the positive input terminal of the comparator section, the control terminal of the first switching transistor is connected to the output terminal of the comparator section, and the second terminal of the first switching transistor is connected to the negative input terminal of the comparator section.

[0011] Optionally, the microcurrent unit includes a microcurrent driving circuit and a microcurrent control circuit. The control terminals of the microcurrent driving circuit and the microcurrent control circuit are connected to the sub-control module, and the input terminal of the microcurrent driving circuit is connected to the output terminal of the microcurrent control circuit.

[0012] Optionally, the micro-current driving circuit includes an H-bridge circuit and two constant current driving circuits. The first and second arms of the H-bridge circuit are connected to the sub-control module. The third and fourth arms of the H-bridge circuit are connected to the sub-control module through the constant current driving circuits. The input terminal of the constant current driving circuit is connected to the micro-current control circuit.

[0013] Optionally, the constant current drive circuit includes a seventh transistor, an eighth transistor, a ninth transistor, a first resistor, a second resistor, a third resistor, and a second capacitor;

[0014] The control terminal of the seventh transistor is connected to the sub-control module through the first resistor. The first terminal of the seventh transistor is connected to the first terminal of the second resistor and the first terminal of the eighth transistor. The second terminal of the seventh transistor is connected to the output terminal of the micro-current control circuit. The second terminal of the second resistor is connected to the control terminal of the eighth transistor and the first terminal of the ninth transistor. The second terminal of the ninth transistor is grounded through the third resistor. The second terminal of the eighth transistor is grounded through the second capacitor. The second terminal of the eighth transistor and the control terminal of the ninth transistor are connected to the third or fourth bridge arm of the H-bridge circuit.

[0015] The microcurrent control circuit includes a second-order RC filter circuit and a voltage follower circuit. The positive input terminal of the voltage follower circuit is connected to the sub-control module through the second-order RC filter circuit, and the output terminal of the voltage follower circuit is connected to the second terminal of the seventh transistor.

[0016] Optionally, a blower module is also included, which is disposed within the housing. The blower module includes a motor power supply circuit, a motor control circuit, and a blower motor. The output terminal of the motor power supply circuit is connected to the blower motor and the feedback input terminal of the motor power supply circuit, and the motor control circuit is connected to the blower motor.

[0017] Optionally, the input terminal of the motor control circuit is connected to the main control module, and the control terminal of the motor power supply circuit is connected to the main control module; an isolation circuit is also connected between the motor power supply circuit and the blower motor.

[0018] Optionally, it also includes a vibration module and a negative ion module; the vibration module includes a vibration control circuit and a vibration motor, the input terminal of the vibration control circuit is connected to the main control module, and the output terminal of the vibration control circuit is connected to the vibration motor;

[0019] The negative ion module includes a negative ion control circuit and a negative ion generating unit. The input terminal of the negative ion control circuit is connected to the main control module, and the output terminal of the negative ion control circuit is connected to the negative ion generating unit.

[0020] The hair-strengthening comb provided in this embodiment includes a housing, a main control module, a first comb tooth module, and a second comb tooth module. The main control module is disposed within the housing, and the first and second comb tooth modules are detachably connected to the housing. The first comb tooth module includes a sub-control module. The signal output terminal of the sub-control module is connected to the signal input terminal of the main control module, and the signal input terminal of the sub-control module is connected to the signal output terminal of the main control module. Firstly, the detachable comb tooth modules reduce the size of the hair-strengthening comb. Secondly, by setting the sub-control module on the comb tooth modules that require separate control, the number of connections between the comb tooth modules and the main control module of the hair-strengthening comb is reduced, thereby improving the stability of the hair-strengthening comb. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 content of the embodiments of this utility model and these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a hair-strengthening comb provided in an embodiment of this utility model;

[0023] Figure 2 This is a circuit diagram of the light-emitting unit provided in an embodiment of the present invention;

[0024] Figure 3 This is a circuit diagram of the microcurrent unit provided in this embodiment of the utility model;

[0025] Figure 4 This is a circuit diagram of another microcurrent unit provided in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of another hair-strengthening comb provided in an embodiment of the present invention;

[0027] Figure 6 This is a circuit diagram of the blower module provided in this embodiment of the utility model;

[0028] Figure 7 This is a circuit diagram of the vibration module provided in this embodiment of the utility model;

[0029] Figure 8 This is a circuit diagram of the negative ion module provided in this embodiment of the utility model. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] Existing hair care combs have functions such as scalp phototherapy, microcurrent, and even drug delivery. However, hair care combs with these functions are all relatively large and inconvenient to use. In order to reduce the size of the hair care comb, the applicant integrated the above functions such as phototherapy, microcurrent, and drug delivery into the comb tooth modules of multiple hair care combs, and even integrated phototherapy and microcurrent into a single comb tooth module. However, as the applicant's research progressed, it was found that there are many connections between the comb tooth module with integrated phototherapy and microcurrent functions and the control module of the hair care comb. For example, the three light sources require at least four control lines, and the microcurrent function requires six control lines. In addition, there are the lines required for the power module inside the hair care comb to supply power to the comb tooth module. Under these circumstances, the stability of the detachable comb tooth module becomes the biggest problem.

[0032] Based on the above-mentioned technical problems, this embodiment proposes the following solutions:

[0033] Figure 1 This is a schematic diagram of the structure of a hair-strengthening comb provided in an embodiment of this utility model. See also... Figure 1 The hair-strengthening comb provided in this embodiment of the utility model includes a housing 1, a main control module 2, a first comb tooth module 4, and a second comb tooth module 3. The main control module 2 is disposed inside the housing 1, and the first comb tooth module 4 and the second comb tooth module 3 are detachably connected to the housing 1. The first comb tooth module 4 includes a secondary control module 41. The signal output terminal of the secondary control module 41 is connected to the signal input terminal of the main control module 2, and the signal input terminal of the secondary control module 41 is connected to the signal output terminal of the main control module 2.

[0034] Specifically, the main control module 2 is located inside the housing 1 and controls the hair comb to operate according to a predetermined program. The secondary control module 41 is located inside the detachable first comb tooth module 4. When the first comb tooth module 4 is installed on the housing 1, the signal input and signal output terminals of the main control module 2 are electrically connected to the signal output and signal input terminals of the secondary control module 41, respectively, thereby realizing signal interaction between the main control module 2 and the secondary control module 41. When the main control module 2 receives the start-up command, it first sends a query command to the secondary control module 41. If the main control module 2 receives a response signal from the secondary control module 41, it then sends a start-up control signal to the secondary control module 41. Subsequently, the secondary control module 41 controls the first comb tooth module 4 to work according to the received control signal.

[0035] In this embodiment, only the signal output terminal of the main control module 2 and the signal input terminal of the secondary control module 41 need to be connected to enable the secondary control module 41 to control the first comb module 4 to work by receiving control signals from the main control module 2. That is, in this embodiment, the main control module 2 can control the first comb module 4 through only two signal lines, which greatly reduces the number of signal lines between the first comb module 4 and the main control module 2, reduces the probability of signal line failure, and thus improves the stability of the hair comb.

[0036] In this embodiment, by setting a sub-control module 41 on the detachable first comb module 4, the main control module 2 can control the first comb module 4 to work through only two signal lines. On the one hand, the size of the hair growth comb is reduced by setting a detachable comb module. On the other hand, by setting a sub-control module 41 on the comb module that needs to be controlled separately, the number of connections between the comb module and the main control module 2 of the hair growth comb is reduced, thereby improving the stability of the hair growth comb.

[0037] See also Figure 1 Both the first comb module 4 and the second comb module 3 include a signal input terminal and a signal output terminal. The signal input terminal of the first comb module 4 is connected to the signal output terminal of the main control module 2, and the signal output terminal of the first comb module is connected to the signal input terminal of the main control module 2. The signal input terminal and the signal output terminal of the second comb module 3 are short-circuited.

[0038] Specifically, the signal input terminal of the first comb module 4 is connected to the signal input terminal of its internal secondary control module 41, and the signal comb terminal of the first comb module 4 is connected to the signal output terminal of its internal secondary control module 41. In order to realize the detachable function of the first comb module 4, the first comb module 4 and the housing 1 can be electrically connected by a spring pin. The second comb module 3 is also provided with a signal input terminal and a signal output terminal. In this embodiment, the second comb module 3 does not need to be powered and controlled separately. Therefore, the signal input terminal and the signal output terminal of the second comb module 3 are short-circuited for identification by the main control module 2. Similarly, the second comb module 3 and the housing 1 can also be electrically connected by a spring pin.

[0039] In this embodiment, controllers are respectively configured in the housing and the first comb module to enable mutual communication. The communication operates in a master-slave mode, with the master control module 2 as the master and the slave control module 41 in the first comb module 4 as the slave. In a call-and-response mode, upon power-on, the master control module 2 first sends a part number query data frame and waits for a response from the first comb module 4. Only when the first comb module 4 replies with the corresponding part number is the part considered installed correctly, and the device can start working normally. Otherwise, if the part is installed incorrectly, the device cannot start normally. During normal use, the master control module 2 will periodically verify the first comb module 4. Only when the first comb module 4 responds normally can the device work properly; otherwise, the part is considered faulty.

[0040] See also Figure 1 This embodiment provides another structure for the first comb module 4, which further includes a light-emitting unit 42 and a micro-current unit 43; the light-emitting unit 42 is electrically connected to the sub-control module 41, and the micro-current unit 43 is electrically connected to the sub-control module 41.

[0041] Specifically, the first comb module 4 has the functions of phototherapy and microcurrent massage for the scalp. The first comb module 4 includes a light-emitting unit 42 and a microcurrent unit 43. The light-emitting unit 42 emits light of various wavelengths, which provides phototherapy to the scalp upon reaching it. The microcurrent unit 43 generates a microcurrent, which massages the scalp through the electrode comb teeth on the first comb module 4. The light-emitting unit 42 is electrically connected to the sub-control module 41 and operates by receiving control signals from the sub-control module 41. Similarly, the microcurrent unit 43 is electrically connected to the sub-control module 41 and operates by receiving control signals from the sub-control module 41. In this embodiment, the main control module 2 controls the light-emitting unit 42 and the microcurrent unit 43 in the first comb module 4 through the sub-control module 41. This eliminates the need to directly connect the light-emitting unit 42 and the microcurrent unit 43 to the main control module 2 via signal lines, reducing the number of signal lines and improving the stability of the hair-strengthening comb. In actual operation, when performing tasks such as illumination, the main control module sends the LED lighting parameters to the secondary control module 41, and the secondary control module 41 drives the LED according to the parameters sent by the main control module 2.

[0042] On the other hand, in this embodiment, the first comb module 4 includes a micro-current unit 43. The voltage of the micro-current unit 43 during operation can reach tens of volts or even hundreds of volts. With the sub-control module 41 set in the first comb module 4, the power supply module of the micro-current unit 43 can be integrated into the first comb module 4. Only a lower voltage needs to be provided to the first comb module 4 for it to operate normally, avoiding the risk of electric shock when the spring needles of the first comb module 4 are exposed during disassembly, and improving the safety of using the hair comb.

[0043] Figure 2 This is a circuit diagram of the light-emitting unit 42 provided in this embodiment of the present invention. See also: Figure 2 In another embodiment of this utility model, the light-emitting unit 42 includes an LED light source, a laser light source, and a light source driving circuit 42; the light source driving circuit includes a filter section 421, a comparator section 422, and a switch section 423. The switch section 423 includes a first switching transistor MOS1, the second terminal of the first switching transistor MOS1 is grounded through a sampling resistor, the input terminal of the filter section 421 is connected to the sub-control module 41, the output terminal of the filter section 421 is connected to the positive input terminal of the comparator section 422, the control terminal of the first switching transistor MOS1 is connected to the output terminal of the comparator section 422, and the second terminal of the first switching transistor MOS1 is connected to the negative input terminal of the comparator section 422.

[0044] Specifically, the number of light source driving circuits 42 can be the same as the type of light source, for example, two. The output terminal of the light source driving circuit 42, which is the first terminal of the first switching transistor MOS1, is connected to the cathode of the LED light source or laser light source. In this embodiment, the first switching transistor MOS1 is an NMOS transistor. When the control terminal of the first switching transistor MOS1 is high, the first switching transistor is turned on, and the LED light source or laser light source emits light. When the control terminal of the first switching transistor is low, the first switching transistor is turned off, and the LED light source or laser light source does not emit light.

[0045] To achieve constant current driving of LED and laser light sources, the light source driving current in this embodiment includes a filter unit 421, a comparator unit 422, and a switch unit 423. The filter unit 421 is electrically connected to the sub-control module 41 and receives the voltage waveform signal sent by the sub-control module 41. After being filtered by the filter unit 421, a relatively stable voltage signal is formed. The voltage signal is input through the positive input terminal of the comparator unit 422. The negative input terminal of the comparator unit 422 is connected to the first terminal of the sampling resistor. The voltage at the first terminal of the sampling resistor is the cathode voltage of the LED or laser light source. When the cathode voltage of the LED or laser light source is greater than the voltage signal at the positive input terminal of the comparator unit 422, the comparator unit 422 outputs a low level, and the first switch is turned off; otherwise, the first switch is turned on.

[0046] Figure 3 This is a circuit diagram of the microcurrent unit 43 provided in this embodiment of the present invention, for reference. Figure 3 In another embodiment of the present invention, the microcurrent unit 43 includes a microcurrent driving circuit 431 and a microcurrent control circuit 432. The control terminals of the microcurrent driving circuit 431 and the microcurrent control circuit 432 are connected to the sub-control module 41, and the input terminal of the microcurrent driving circuit 431 is connected to the output terminal of the microcurrent control circuit 432.

[0047] Specifically, this embodiment employs a micro-current driving circuit 431 and a micro-current control circuit 432. The control terminal of the micro-current driving circuit 431 is connected to the sub-control module 41. The sub-control module 41 controls the operation of the micro-current driving circuit 431 through the control terminal of the micro-current driving circuit 431, thereby controlling the direction of the micro-current and the start and stop of the micro-current unit 43. On the other hand, the control terminal of the micro-current control circuit 432 is also connected to the sub-control module 41. The sub-control module 41 controls the magnitude of the micro-current through the micro-current control circuit 432.

[0048] Continue to refer to Figure 3In order to achieve constant current drive of microcurrent, in another embodiment of the present invention, the microcurrent drive circuit 431 includes an H-bridge circuit 4311 and two constant current drive circuits 4312. The first and second arms of the H-bridge circuit 4311 are connected to the sub-control module 41. The third and fourth arms of the H-bridge circuit 4311 are respectively connected to the sub-control module 41 through the constant current drive circuit 4312. The input terminal of the constant current drive circuit 4312 is connected to the microcurrent control circuit 432.

[0049] Specifically, the micro-current driving circuit 431 includes an H-bridge circuit 4311 and two constant current driving circuits 4312. The H-bridge circuit 4311 includes four arms: a first arm, a second arm, a third arm, and a fourth arm. The first and second arms are connected to the sub-control module 41, and the third and fourth arms are connected to the sub-control module 41 through the constant current driving circuits. The constant current driving circuits 4312 ensure that the current flowing from the first arm to the fourth arm and from the second arm to the third arm remains constant and will not change due to changes in the resistance between the micro-current output electrodes PAD1 and PAD2. On the other hand, a first capacitor C1 is connected in parallel between the micro-current output electrodes PAD1 and PAD2. The first capacitor C1 is used to stabilize the current between the micro-current output electrodes PAD1 and PAD2.

[0050] Each bridge arm is equipped with a driving transistor, namely transistor Q1, transistor Q2, transistor Q3, and transistor Q4. Transistors Q1 and Q2 are PNP type transistors, while transistors Q3 and Q4 are NPN type transistors. The collectors of transistors Q1 and Q3 are connected to the first micro-current output electrode PAD1, and the collectors of transistors Q2 and Q4 are connected to the second micro-current output electrode PAD2. Transistors Q1 and Q2 are connected to the sub-control module 41 via transistors Q5 and Q6, respectively. Transistors Q3 and Q4 are connected to the sub-control module 41 via a constant current driving circuit 4312.

[0051] The secondary control module 41 controls the fifth transistor Q5, the sixth transistor Q6, and the constant current drive circuit 4312 to select and control the first transistor Q1, the second transistor Q2, the third transistor Q3, and the fourth transistor Q4 to turn on and off, thereby controlling the direction of the microcurrent in the microcurrent output electrode. When the secondary control module 41 controls the first transistor Q1, the second transistor, and the fourth transistor Q4 to turn on, the first and fourth arms of the H-bridge current are turned on, and the current direction of the microcurrent output electrode is from the first microcurrent output motor PAD1 to the second microcurrent output motor PAD2. Conversely, when the secondary control module 41 controls the second transistor Q2, the third transistor, and the fourth transistor Q3 to turn on, the second and third arms of the H-bridge current are turned on, and the current direction of the microcurrent output electrode is from the second microcurrent output motor PAD2 to the first microcurrent output motor PAD1.

[0052] On the other hand, in order to adjust the magnitude of the output current of the micro-current output electrode, the input terminal of the constant current drive circuit 4312, which is connected to the third and fourth bridge arms, is connected to the output terminal of the micro-current control circuit 432. The input terminal of the micro-current control circuit 432 is connected to the sub-control module 41. Thus, the sub-control module 41 can control the magnitude of the output current of the micro-current output electrode through the micro-current control circuit 432. At the same time, due to the presence of the constant current drive circuit 4312, when the sub-control module 41 adjusts the magnitude of the output current of the current output electrode, the magnitude of the output current of the output electrode changes relatively stably, and the current fluctuation is small.

[0053] Figure 4 This is a circuit diagram of another microcurrent unit 43 provided in this embodiment of the present invention, for reference. Figure 3 and Figure 4In another embodiment of this utility model, the constant current driving circuit 4312 includes a seventh transistor Q7, an eighth transistor Q8, a ninth transistor Q9, a first resistor R1, a second resistor R2, a third resistor R3, and a second capacitor C2. The control terminal of the seventh transistor Q7 is connected to the sub-control module 41 through the first resistor R1. The first terminal of the seventh transistor Q7 is connected to the first terminal of the second resistor R2 and the first terminal of the eighth transistor Q8. The second terminal of the seventh transistor Q7 is connected to the output terminal of the micro-current control circuit 432. The second terminal of the second resistor R2 is connected to the control terminal of the eighth transistor Q8 and the first terminal of the ninth transistor Q9. One end is connected, the second end of the ninth transistor Q9 is grounded through the third resistor R3, the second end of the eighth transistor Q8 is grounded through the second capacitor C2, the second end of the eighth transistor Q8 and the control end of the ninth transistor Q9 are connected to the third or fourth bridge arm of the H-bridge circuit 4311; the micro-current control circuit 432 includes a second-order RC filter circuit 4321 and a voltage follower circuit 4322, the positive input end of the voltage follower circuit 4322 is connected to the sub-control module 41 through the second-order RC filter circuit 4321, and the output end of the voltage follower circuit 4322 is connected to the second end of the seventh transistor Q7.

[0054] Specifically, to achieve constant current output of the H-bridge circuit 4311 and current stability during the adjustment of micro-current magnitude, the constant current drive circuit 4312 includes a seventh transistor Q7, an eighth transistor Q8, and a ninth transistor Q9. The secondary control module 41 controls the conduction and cutoff of the eighth transistor Q8 and the ninth transistor Q9 through the seventh transistor Q7. In this embodiment, the seventh transistor Q7 is an NPN transistor, and the eighth transistor Q8 and the ninth transistor Q9 are PNP transistors. When the secondary control module 41 outputs a low level to the control terminal of the seventh transistor Q7, the seventh transistor Q7, the eighth transistor Q8, and the ninth transistor Q9 are turned on and off. All nine transistors Q9 are turned on. Thus, transistor Q9 and transistor Q3 form a current mirror structure. The current flowing through transistor Q9 is the same as the current flowing through transistor Q3. Even if the resistance on the collector side of transistor Q3 changes, the current flowing through transistor Q3 will not change. This achieves constant current output of micro-current. Similarly, the constant current drive circuit 4312 connected to the fourth bridge arm also forms a current mirror structure with transistor Q4. Even if the resistance on the collector side of transistor Q4 changes, the current flowing through transistor Q4 will not change.

[0055] On the other hand, in order to adjust the magnitude of the microcurrent, there are two microcurrent control circuits 432. The two microcurrent control circuits 432 are respectively connected between the sub-control module 41 and the third and fourth bridge arms. Specifically, the microcurrent control circuit 432 includes a second-order RC filter circuit 4321 and a voltage follower circuit 4322. The input terminal of the second-order RC filter circuit is connected to the output terminal of the sub-control module 41, and the output terminal of the second-order RC filter circuit 432 is connected to the positive input terminal of the voltage follower circuit 4322. The voltage waveform signal output by the sub-control module 41 is obtained as a relatively stable voltage signal after passing through the second-order RC filter circuit 4321. The voltage signal reaches the third bridge arm of the H-bridge circuit 4311 after passing through the voltage follower circuit 4322. In this embodiment, the sub-control module 41 can change the magnitude of the voltage signal by changing the duty cycle of the voltage waveform signal, thereby changing the magnitude of the microcurrent output by the H-bridge circuit 4311.

[0056] Figure 5 This is a schematic diagram of another hair-strengthening comb provided in an embodiment of this utility model; see reference. Figure 4 In another embodiment of the present invention, the hair comb further includes a blower module 5, which is disposed in the housing 1. The blower module 5 includes a motor power supply circuit 51, a motor control circuit 52, and a blower motor 53. The output terminal of the motor power supply circuit 51 is connected to the blower motor 53 and the feedback input terminal of the motor power supply circuit 51. The motor control circuit 52 is connected to the blower motor 53.

[0057] Specifically, to achieve the hair dryer function of the hair comb, a hair dryer module 5 is provided inside the hair comb housing 1 in this embodiment. The hair dryer module 5 includes a motor power supply circuit 51, a motor control circuit 52, and a hair dryer motor 53. The main control module 2 controls whether to supply power to the hair dryer motor 53 by controlling the motor power supply circuit 51, and controls the operating state of the hair dryer motor 53 by controlling the motor control circuit 52. To ensure a constant voltage for the hair dryer motor 53, the output terminal of the motor power supply circuit 51 is connected not only to the hair dryer motor 53, but also to the feedback input terminal of the motor power supply circuit 51. When the voltage received at the feedback input terminal of the motor power supply circuit 51 is too high, the motor power supply circuit 51 reduces its output voltage; when the voltage received at the feedback output terminal of the motor power supply circuit 51 is too low, the motor power supply circuit 51 increases its output voltage, thereby stabilizing the output voltage of the motor power supply circuit 51 and improving the operational stability of the hair dryer motor 53.

[0058] Figure 6 This is a circuit diagram of the blower module provided in an embodiment of this utility model, for reference. Figure 6In another embodiment of this utility model, the input terminal of the motor control circuit 52 is connected to the main control module 2, and the control terminal of the motor power supply circuit 51 is connected to the main control module 2; an isolation circuit 54 is also connected between the motor power supply circuit 51 and the blower motor 53.

[0059] Specifically, the motor power supply circuit 51 includes a voltage conversion chip U1. The voltage input terminal VIN of the voltage conversion chip U1 is connected to the system power supply VSYS. The system power supply VSYS is grounded through three parallel capacitors. The feedback input terminal FB of the voltage conversion chip U1 is connected to the second end of the fourth resistor R4. The first end of the fourth resistor R4 is connected to the output terminal VCCM of the motor power supply circuit 51. A third capacitor C3 for filtering is also connected in parallel across the fourth resistor R4. The second end of the fourth resistor R4 is grounded through a resistor. The control terminal EN of the voltage conversion chip U1 is connected to the main control module 2. The main control module 2 supplies power to the blower motor by controlling the voltage conversion chip U1. The output terminal SW of the voltage conversion chip U1 is connected to the inductor L. In this case, after the main control module 2 outputs an enable signal to the control terminal EN of the voltage conversion chip U1, the output terminal SW of the voltage conversion chip U1 periodically outputs a high level or a low level to charge and discharge the inductor L, forming a step-down converter circuit equivalent to a BUCK circuit, realizing the conversion of the higher power supply voltage into the lower voltage required by the blower motor 53.

[0060] To reduce the impact of voltage fluctuations in the motor power supply circuit 51 on the hair dryer motor 53, an isolation circuit 54 is connected between the output terminal of the motor power supply circuit 51 and the hair dryer motor 53. The isolation circuit 54 includes a first magnetic bead FB1, a second magnetic bead FB2, a fourth capacitor C4, a fifth capacitor C5, and a common-mode inductor T1. The second end of the first magnetic bead FB1 is connected to the output terminal of the motor power supply circuit 51. The first end of the first magnetic bead FB1 is connected to the first end of the fourth capacitor C4 and the fifth capacitor C5. The second ends of the fourth capacitor C4 and the fifth capacitor C5 are connected to the first end of the second magnetic bead FB2. The second end of the second magnetic bead FB2 is grounded. The first and second ends of the fifth capacitor C5 are connected to the two input terminals of the common-mode inductor T1. One output terminal of the common-mode inductor T1 outputs the isolated hair dryer motor voltage MVCCM, and the other output terminal of the common-mode inductor T1 is grounded.

[0061] The motor control circuit 52 includes an optocoupler U2, a thirteenth transistor Q13, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and an eighth resistor R8. The first control terminal of the optocoupler U2 is connected to the optocoupler power supply voltage VDD3V3, and the second control terminal of the optocoupler U2 is connected to the collector of the thirteenth transistor Q13. The input terminal of the optocoupler U2 is connected to the blower motor voltage MVCCM. The output terminal of the optocoupler U2 is grounded through the fifth resistor R5 and the sixth resistor R6. The second terminal of the fifth resistor R5 is connected to the third input terminal of the blower motor 53. The fifth resistor R5 and the sixth resistor R6 act as a voltage divider. The emitter of the thirteenth transistor Q13 is grounded through the seventh resistor R7, and the control terminal is connected to the main control module 2 through the eighth resistor R8.

[0062] In this embodiment, the first end of the hair dryer motor 53 is connected to the hair dryer motor voltage MVCCM, the second end is grounded, and the third end is connected to the output end of the motor control circuit 52. The main control module 2 changes the frequency and duty cycle of the voltage waveform output to the thirteenth transistor Q13, and the output end of the optocoupler 52 outputs a voltage signal with the same phase and duty cycle, thereby changing the rotation speed of the hair dryer motor 53 and realizing the adjustment of the airflow of the hair comb blower module.

[0063] Figure 7 This is a circuit diagram of the vibration module provided in this embodiment of the utility model. Figure 8 This is a circuit diagram of the negative ion module provided in this embodiment of the utility model, for reference. Figure 7 and Figure 8 In this embodiment, the hair comb also includes a vibration module and a negative ion module; the vibration module includes a vibration control circuit and a vibration motor, the input terminal of the vibration control circuit is connected to the main control module 2, and the output terminal of the vibration control circuit is connected to the vibration motor; the negative ion module includes a negative ion control circuit and a negative ion generating unit, the input terminal of the negative ion control circuit is connected to the main control module 2, and the output terminal of the negative ion control circuit is connected to the negative ion generating unit.

[0064] Specifically, the vibration control circuit includes a ninth resistor R9, a second switching transistor MOS2, and a first Schottky diode D1. The first end of the ninth resistor R9 is connected to the main control module 2, and the second end is connected to the control terminal of the second switching transistor MOS2. The first end of the second switching transistor MOS2 is connected to the second input terminal of the vibration motor. The first input terminal of the vibration motor is connected to the motor power supply Vshock. To protect the power supply from reverse voltage, the first input terminal of the vibration motor is connected to the cathode of the first Schottky diode D1, and the second input terminal is connected to the anode of the first Schottky diode D1. Similarly, the negative ion control circuit includes a tenth resistor R10, a third switching transistor MOS3, and a second Schottky diode D2. The first end of the tenth resistor R10 is connected to the main control module 2, and the second end is connected to the control terminal of the third switching transistor MOS3. The first end of the third switching transistor MOS3 is connected to the second input terminal of the negative ion generating unit. The first input terminal of the negative ion generating unit is connected to the negative ion power supply VDD5V. The first input terminal of the negative ion generating unit is connected to the cathode of the second Schottky diode D2, and the second input terminal is connected to the anode of the second Schottky diode D2.

[0065] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A hair care comb, characterized in that, include: Housing, main control module, first comb tooth module, and second comb tooth module; The main control module is disposed inside the housing, and the first comb module and the second comb module are detachably connected to the housing. The first comb module includes a sub-control module. The signal output terminal of the secondary control module is connected to the signal input terminal of the primary control module, and the signal input terminal of the secondary control module is connected to the signal output terminal of the primary control module.

2. A hair care comb according to claim 1, wherein Both the first comb module and the second comb module include a signal input terminal and a signal output terminal. The signal input terminal of the first comb module is connected to the signal output terminal of the main control module, and the signal output terminal of the first comb module is connected to the signal input terminal of the main control module. The signal input terminal and the signal output terminal of the second comb module are short-circuited.

3. A hair care comb according to claim 2, wherein The first comb module further includes a light-emitting unit and a micro-current unit; the light-emitting unit is electrically connected to the sub-control module, and the micro-current unit is electrically connected to the sub-control module.

4. A hair care comb according to claim 3, wherein The light-emitting unit includes an LED light source, a laser light source, and a light source driving circuit; The light source driving circuit includes a filtering section, a comparator section, and a switching section. The switching section includes a first switching transistor, the second terminal of which is grounded through a sampling resistor. The input terminal of the filtering section is connected to the sub-control module, the output terminal of the filtering section is connected to the positive input terminal of the comparator section, the control terminal of the first switching transistor is connected to the output terminal of the comparator section, and the second terminal of the first switching transistor is connected to the negative input terminal of the comparator section.

5. The hair care comb of claim 3, wherein, The microcurrent unit includes a microcurrent driving circuit and a microcurrent control circuit. The control terminals of the microcurrent driving circuit and the microcurrent control circuit are connected to the sub-control module, and the input terminal of the microcurrent driving circuit is connected to the output terminal of the microcurrent control circuit.

6. A hair care comb according to claim 5, wherein The micro-current driving circuit includes an H-bridge circuit and two constant current driving circuits. The first and second arms of the H-bridge circuit are connected to the sub-control module. The third and fourth arms of the H-bridge circuit are connected to the sub-control module through the constant current driving circuits. The input terminal of the constant current driving circuit is connected to the micro-current control circuit.

7. A hair growth comb according to claim 6, wherein The constant current drive circuit includes a seventh transistor, an eighth transistor, a ninth transistor, a first resistor, a second resistor, a third resistor, and a second capacitor; The control terminal of the seventh transistor is connected to the sub-control module through the first resistor. The first terminal of the seventh transistor is connected to the first terminal of the second resistor and the first terminal of the eighth transistor. The second terminal of the seventh transistor is connected to the output terminal of the micro-current control circuit. The second terminal of the second resistor is connected to the control terminal of the eighth transistor and the first terminal of the ninth transistor. The second terminal of the ninth transistor is grounded through the third resistor. The second terminal of the eighth transistor is grounded through the second capacitor. The second terminal of the eighth transistor and the control terminal of the ninth transistor are connected to the third or fourth bridge arm of the H-bridge circuit. The microcurrent control circuit includes a second-order RC filter circuit and a voltage follower circuit. The positive input terminal of the voltage follower circuit is connected to the sub-control module through the second-order RC filter circuit, and the output terminal of the voltage follower circuit is connected to the second terminal of the seventh transistor.

8. The hair care comb of claim 1, wherein, It also includes a blower module, which is disposed inside the housing. The blower module includes a motor power supply circuit, a motor control circuit, and a blower motor. The output terminal of the motor power supply circuit is connected to the blower motor and the feedback input terminal of the motor power supply circuit. The motor control circuit is connected to the blower motor.

9. A hair care comb according to claim 8, wherein The input terminal of the motor control circuit is connected to the main control module, and the control terminal of the motor power supply circuit is connected to the main control module; an isolation circuit is also connected between the motor power supply circuit and the blower motor.

10. The hair care comb of claim 1, wherein, It also includes a vibration module and a negative ion module; the vibration module includes a vibration control circuit and a vibration motor, the input terminal of the vibration control circuit is connected to the main control module, and the output terminal of the vibration control circuit is connected to the vibration motor; The negative ion module includes a negative ion control circuit and a negative ion generating unit. The input terminal of the negative ion control circuit is connected to the main control module, and the output terminal of the negative ion control circuit is connected to the negative ion generating unit.

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