A beauty device

Abstract

The present invention discloses a beauty device, comprising a body and a stimulation imparting unit, wherein an operating unit connected to a circuit board, an intensity indicating unit, a charging indicating unit, a rechargeable battery, a control unit and a plurality of connectors are arranged in the body, wherein the stimulation imparting unit is composed of more than two electrodes, wherein the electrodes form two electrode groups, wherein the electrode groups are respectively composed of more than one electrode, wherein the two electrode groups sequentially output a low-frequency signal first, and then sequentially output one or both of an intermediate frequency and a high frequency signal in a direction opposite to the direction of the low-frequency signal, or output one or both of an intermediate frequency and a high frequency signal first and then output a low-frequency signal, wherein during the output of the intermediate frequency and the high frequency signal, more than one signal off period is provided, wherein the control unit comprises a controller, a waveform adjusting unit and a charging management unit, and wherein the stimulation imparting unit flows out an asymmetric composite wave current synthesized by a low frequency and one or both of an intermediate frequency and a high frequency according to a pre-set time.

Description

Technical Field

[0001] The present invention relates to a beauty device, and in particular to a beauty device which closely adheres to the body surface of a user and flows an asymmetric composite wave current formed by low frequency, medium frequency and high frequency to the body surface of the user. Background Art

[0002] In the prior art, there are many cosmetic treatments that use electrical therapy to stimulate the user's body surface to achieve cosmetic effects such as face lifting, muscle training, body relaxation, fatigue recovery, and wrinkle improvement, and various cosmetic devices that use these therapies have been developed.

[0003] Usually, low frequency, medium frequency, and high frequency used in electrical stimulation have their own advantages and disadvantages. Low frequency can effectively promote muscle movement and has a strong sense of stimulation, but because of the large skin resistance, the human body is prone to feel too strong stimulation and pain, and many people cannot withstand this stimulation. In addition, because the skin resistance is large under low frequency conditions, the current can only reach a few millimeters below the skin and cannot reach the deep muscles. It often cannot achieve the purpose of promoting the muscles that actually need to move. In order to strengthen the effect of stimulation, further increasing the intensity will cause strong pain to the skin. Compared with low frequency, the wavelength of medium frequency is relatively short, the skin resistance is relatively small, the burden on the skin is small, and the current can reach 2 to 3 cm below the skin. However, the somatic stimulation is relatively weaker than that of low frequency. The wavelength of high frequency is shorter than that of medium frequency, and the skin resistance is also smaller than that of medium frequency. The current can reach more than 10 cm below the skin and can reach vascular tissue, so it can play a role in dilating blood vessels, promoting blood circulation, and improving shoulder pain and waist pain. However, the stimulation of high frequency is weaker than that of medium frequency.

[0004] Low-frequency electrical therapy with a single waveform is simple in technology and is widely used by most beauty devices in the prior art. However, this type of beauty device places a heavy burden on the user's skin and cannot reach the deep muscle layer. If the amount of current is increased to improve the effect, the pain receptors of the skin will be stimulated, causing pain. Moreover, this type of beauty device cannot adjust the amplitude and pulse width, the stimulation form is single, and the user experience is poor. In order to improve these problems, a very small number of products have made certain technical improvements. For example, beauty devices that overlap medium-frequency or high-frequency signals with low-frequency signals through overlapping methods have appeared. However, since the medium-frequency or high-frequency signals are overlapped on the basis of low frequencies, although the discomfort such as pain felt by the user can be alleviated when the current is increased by relatively reducing the peak current value, the medium-frequency and high-frequency signals have few components and cannot fully stimulate the deep muscles and vascular tissues. Since the stimulation signal used is still a regular single waveform, the user is prone to habitual fatigue of the stimulation, and the amplitude and pulse width cannot be adjusted according to the user's needs, resulting in a low sense of use and it is difficult to continue long-term use. The above factors have caused the beauty devices in the current prior art to be unable to effectively overcome the shortcomings of low frequency, medium frequency and high frequency and effectively take into account the advantages of low frequency, medium frequency and high frequency, which have become problems that need to be solved urgently by technicians in this field. Summary of the invention

[0005] In view of the defects of the above-mentioned prior art, the present invention provides a beauty device of asymmetric composite wave current that can improve the sense of use and convenience, overcome the respective shortcomings of low frequency, medium frequency and high frequency, effectively utilize the respective advantages of low frequency, medium frequency and high frequency, and adjust the amplitude and pulse width. In the present invention, the classification of frequency bands is in accordance with the classification standards commonly used in the field of beauty devices and body treatment appliances. The low frequency band is below 1000Hz, the medium frequency band is 1000-10000Hz, and the high frequency band is above 10000Hz. As a stimulation device that flows current to the surface of the user's body, it is usually called a beauty instrument, a body stimulation device, a treatment appliance, etc., and is collectively referred to as a beauty device in the present invention.

[0006] In order to solve the above technical problems, the present invention proposes a beauty device, comprising a body and a stimulation imparting unit, wherein the body is provided with an operating unit connected to a circuit board, an intensity indicating unit, a charging indicating unit, a rechargeable battery, a control unit and a plurality of connectors; the stimulation imparting unit is composed of more than two electrodes, and is characterized in that:

[0007] The stimulation imparting unit and the operating unit are respectively connected to the control unit, and the operating unit includes a power switch and an intensity selection switch;

[0008] The control unit generates a low-frequency signal, an intermediate-frequency signal and a high-frequency signal according to the received instruction input by the operating unit, forms an asymmetric composite waveform after processing, and generates an asymmetric composite wave current;

[0009] The stimulation imparting unit is used to output the asymmetric complex wave current according to a pre-set time; the electrodes in the stimulation imparting unit form two electrode groups, each of which is composed of more than one electrode, and the two electrode groups sequentially output a low-frequency signal first, and then sequentially output one or both of an intermediate frequency signal and a high frequency signal in a direction opposite to the direction of the low-frequency signal, or sequentially output one or both of an intermediate frequency signal and a high frequency signal first, and then output a low-frequency signal in a direction opposite to the direction of the intermediate frequency signal and the high frequency signal;

[0010] During the output of the intermediate frequency signal and the high frequency signal, there is one or more signal off-periods, and the sum of the time of all off-periods is recorded as the signal off-time A. By setting the sequential reverse output of the low frequency, intermediate frequency, and high frequency signals and the signal off-time A, an asymmetric composite waveform is formed, and an asymmetric composite wave current is generated. The asymmetric composite wave current circulates out according to the set period.

[0011] Furthermore, the beauty device of the present invention, wherein:

[0012] The total output time of the intermediate frequency signal and the high frequency signal is shorter than the output time of the low frequency signal, and the difference between the total output time of the intermediate frequency signal and the high frequency signal and the output time of the low frequency signal is the signal off time A.

[0013] The intensity indication unit is composed of the same number of intensity indication lamps as the intensity level grades, and the charge indication unit is composed of one or more charge indication lamps.

[0014] The control unit includes a controller, a waveform adjustment unit and a charging management unit; the controller and the waveform adjustment unit are used to generate an asymmetric composite wave current; the controller includes a central processing unit, a memory device, and an input-output device, the controller receives the action instruction input by the operating unit, and generates PWM signal 1 and PWM signal 2 respectively according to the frequency and duty cycle pre-set in the memory device; and according to the intensity selection instruction received from the operating unit, generates a PWM signal H with adjustable duty cycle and amplitude according to the voltage, duty cycle and high level time pre-set according to different intensities; the waveform adjustment unit is provided with a voltage control loop unit and an H-bridge control loop unit; the voltage control loop unit receives the PWM signal H generated by the controller according to the pre-set voltage, duty cycle and high level time, and generates a voltage signal, thereby controlling the intensity of the current stimulation of the stimulation imparting unit according to the amplitude and pulse width of the low frequency signal corresponding to the intensity selection instruction selected by the operating unit and the amplitude and pulse width of the intermediate frequency signal and the high frequency signal, and respectively forms a low frequency signal, an intermediate frequency signal and a high frequency signal according to different intensities and the pre-set frequencies; the voltage control loop unit is connected to the H-bridge control loop unit via the H-bridge control loop unit The H-bridge control circuit unit is connected to the electrodes of the stimulation imparting unit; the H-bridge control circuit unit includes a plurality of transistors, the on or off state of each transistor is controlled by the controller, the H-bridge control circuit unit receives the instruction of the controller and executes the closing, connecting and outflow direction conversion of the low-frequency, medium-frequency and high-frequency signals output between the electrode groups of the stimulation imparting unit according to the preset time, and turns off the signal according to the preset signal off time A during the output of the medium-frequency signal and the high-frequency signal, so as to form a rest period of stimulation; the H-bridge control circuit outputs the low-frequency signal or the medium-frequency signal according to the on or off state of each transistor. One or both of the intermediate frequency signal and the high frequency signal, when receiving the PWM signal 1, a low frequency signal is output, and when receiving the PWM signal 2, one or both of the intermediate frequency signal and the high frequency signal are output, and according to the on or off state of each transistor, the intermediate frequency signal and the high frequency signal output are turned off according to the signal off time A set in advance, so as to form a rest period of stimulation, and on this basis, an asymmetric composite waveform is formed, and finally an asymmetric composite wave current is generated and output to the stimulation imparting unit; the charging management unit includes a charging management chip U2 connected to the rechargeable battery and the USB connector, which is used to control the charging of the rechargeable battery.

[0015] The controller and the waveform adjustment unit control and adjust the amplitude and pulse width of the low-frequency signal, the intermediate-frequency signal, and the high-frequency signal.

[0016] The low-frequency signal is a pulse wave, and the intermediate-frequency signal and the high-frequency signal are one of a pulse wave, a square wave, a triangle wave and a sine wave; the frequency ranges of the low-frequency signal, the intermediate-frequency signal and the high-frequency signal are below 1000 Hz, 1000-10000 Hz and above 10000 Hz respectively.

[0017] The range of the signal off time A is 0ms <A<1000ms。

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The beauty device of the present invention effectively overcomes the shortcomings of low frequency, medium frequency and high frequency while taking into account the respective advantages of low frequency, medium frequency and high frequency, and can minimize the burden on the skin while allowing the current to reach from the superficial part of the skin to the deep muscle, thereby greatly improving the beauty effect. By synthesizing low frequency, medium frequency and high frequency signals to produce changes in the stimulation mode, a single stimulation mode is avoided, and while alleviating the burden of low frequency on the skin, the problem of weak stimulation of medium frequency and high frequency is solved.

[0020] Long-term use of regular electrical stimulation signals will cause users to become habitually fatigued by stimulation, reducing their desire to continue using it for a long time. Therefore, the beauty device of the present invention sets a certain period of signal off during the output of medium-frequency and high-frequency signals, which can produce a sense of rhythm of manual massage, and changes the traditional single fixed stimulation mode by turning off and on the signal, so that users can get a better stimulation experience through the change of stimulation.

[0021] The beauty device of the present invention can also adjust the amplitude and pulse width of the low-frequency signal, the medium-frequency signal, and the high-frequency signal, so that the user can select the stimulation intensity according to their own conditions and the purpose of use, further improving the convenience of use. In addition, by setting the output direction of the medium-frequency and high-frequency signals in the opposite direction of the output direction of the low-frequency signal, the low-frequency current and the medium-frequency and high-frequency currents flow out alternately, which makes the portable beauty device with a rechargeable battery have the properties of an alternating current, solves the problem of direct current stimulating the skin pain receptors and causing stimulation and pain, and realizes a small, portable and efficient beauty device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the three-dimensional structure of the beauty device embodiment 1 of the present invention;

[0023] Figure 2 is a schematic diagram of the internal structure of the beauty device of the present invention;

[0024] Figure 3 is a circuit schematic diagram of the beauty device of the present invention;

[0025] Figure 4Schematic diagram of an asymmetric composite waveform of Embodiment 1 of the beauty device of the present invention;

[0026] Figure 5 is a schematic diagram of the three-dimensional structure of the beauty device embodiment 2 of the present invention;

[0027] Figure 6 Schematic diagram of an asymmetric composite waveform of Example 2 of the beauty device of the present invention.

[0028] In the figure:

[0029] 1-body 2-operation unit 2a-power switch

[0030] 2b-Intensity selection switch 3-Charging indication unit 3a-Charging indication light

[0031] 4-Intensity display unit 4a-Intensity display light L 4b-Intensity display light M

[0032] 4c- Intensity indicator light H 5- Charging port 6- USB connection

[0033] 7-power plug 8-stimulation imparting unit 8a-electrode 1

[0034] 8b - Electrode 2 8c - Electrode 3 8c - Electrode 4

[0035] 9- Circuit board 10- Rechargeable battery 11- Control unit

[0036] 12-controller 13-waveform adjustment unit 14-charging management unit

[0037] 15-USB connector 16-Connector 1 17-Voltage control circuit unit

[0038] 18-H bridge control circuit unit 19-Connector 2 20-Connector 3 DETAILED DESCRIPTION

[0039] The design idea of ​​a beauty device of the present invention is: after outputting low-frequency signals in opposite directions, one or both of medium-frequency and high-frequency signals are output, or after outputting one or both of medium-frequency and high-frequency signals in opposite directions, low-frequency signals are output, and a signal off period is introduced during the output of medium-frequency and high-frequency signals to form an asymmetric composite waveform. While alleviating the problem of excessive skin resistance and strong stimulation due to low-frequency, the medium-frequency and high-frequency signals can be effectively utilized to stimulate deep muscles and vascular tissues, and the traditional single-rule stimulation method is changed by changing the frequency and adjusting the amplitude and pulse width of the low-frequency, medium-frequency and high-frequency signals, so as to realize the rhythm of manual massage and avoid the habitual fatigue caused by the user's monotonous stimulation of rules. In addition, the frequency signal is alternately discharged in opposite directions, so that the current has the properties of alternating current, reducing the risk of excessive skin stimulation by direct current.

[0040] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The described specific embodiments are only used to explain the present invention and are not intended to limit the present invention.

[0041] like Figure 1 and Figure 2As shown, a beauty device proposed by the present invention includes a body 1 that can be held by a user with one hand and a stimulation imparting unit 8. A circuit board 9 is arranged in the body 1, and an operation unit 2, a charging indication unit 3, an intensity indication unit 4, a rechargeable battery 10, a control unit 11 and several connectors are arranged on the circuit board. The stimulation imparting unit 8 and the operation unit 2 are respectively connected to the control unit 11. The command input through the operation unit 2 is processed by the control unit 11 to generate an output signal and output it to the stimulation imparting unit 8. The control unit 11 includes a controller 12, a waveform adjustment unit 13 and a charging management unit 14. The controller 12 preferably adopts an MCU (Micro Controller Unit). The stimulation imparting unit 8 is attached to the surface of the user's body. The stimulation imparting unit 8 can flow out a low-frequency signal and an asymmetric composite wave current synthesized by one of the intermediate frequency signal and the high frequency signal output in the opposite direction of the output direction of the low-frequency signal to the surface of the user's body according to the set time. The operation unit 2 includes a power switch 2a and an intensity selection switch 2b. The power switch 2a and the intensity selection switch 2b can be set to be used in combination or separately. Press the power switch 2a to turn on or off the beauty device, and press the intensity selection switch 2b to select the intensity. The selected intensity can be confirmed by the intensity indication unit 4 set on the body 1. The intensity indication unit 4 is composed of the same number of intensity indication lights as the intensity level classification, and is allocated according to the intensity level of the current stimulation of the stimulation imparting unit 8. The intensity level allocation of the intensity indication lights can also be arbitrarily set according to the necessary intensity level. In this embodiment, it includes the intensity indication light L 4a, the intensity indication light M4b and the intensity indication light H 4c; the charging indication unit 3 is composed of more than one charging indication light 3a, and the charging indication light 3a can also be shared with one of the intensity indication lights, or can be set separately. The charging interface 5 is composed of a USB connector 15. After the rechargeable battery 10 is connected to the connector 1 16, it is divided into two paths, one is grounded, and the other is connected to the VCC pin of the MCU and then connected to the BAT pin of the charging management chip U2, and then connected to the USB connector 15 via the VCC pin of the charging management chip U2, and then connected to the power plug 7 through a USB connection 6.

[0042] The stimulation imparting unit 8 is used to output the asymmetric complex wave current according to a preset time. The stimulation imparting unit 8 is composed of more than two electrodes, such as Figure 1 As shown, it is composed of two electrodes, electrode 1 8a and electrode 2 8b, as shown in FIG. Figure 5 As shown, it is composed of four electrodes: electrode 1 8a, electrode 2 8b, electrode 3 8c and electrode 4 8d. Figure 3As shown, in the stimulation application unit 8, the electrodes form two electrode groups, EMS-A and EMS-B. Each electrode group consists of more than one electrode. Between the two electrode groups, a low-frequency signal is output first in sequence, and then one or both of a medium-frequency signal and a high-frequency signal are output in sequence in a direction opposite to the direction of the low-frequency signal, or one or both of the medium-frequency and high-frequency signals are output first in sequence, and then a low-frequency signal is output in a direction opposite to the direction of the medium-frequency signal and the high-frequency signal; such as Figure 4 and Figure 6 As shown, during the output of the medium-frequency signal and the high-frequency signal, there is more than one signal-off period. The total time of all the off periods is recorded as the signal-off time A. The total output time of the medium-frequency signal and the high-frequency signal is shorter than the output time of the low-frequency signal. The difference between the total output time of the medium-frequency signal and the high-frequency signal and the output time of the low-frequency signal is the signal-off time A. Through the sequential reverse output setting of the low-frequency, medium-frequency, and high-frequency signals and the setting of the signal-off time A, an asymmetric composite waveform is formed, and an asymmetric composite wave current is generated. The asymmetric composite wave current flows out in a set cycle.

[0043] Such as Figure 2 As shown, the control unit 11 includes a controller 12, a waveform adjustment unit 13, and a charging management unit 14; the control unit 11 generates a low-frequency signal, a medium-frequency signal, and a high-frequency signal according to the instruction input by the operation unit 2 received, processes them to form an asymmetric composite waveform, and generates an asymmetric composite wave current; in the present invention, the low-frequency signal is a pulse wave, and the medium-frequency signal and the high-frequency signal are one of a pulse wave, a square wave, a triangular wave, and a sine wave; the frequency ranges of the low-frequency signal, the medium-frequency signal, and the high-frequency signal are respectively below 1000 Hz, 1000 - 10000 Hz, and above 10000 Hz. During the output of the medium-frequency signal and the high-frequency signal, there is more than one signal-off period, and the signal-off period is within a certain range (0 ms < A < 1000 ms). The amplitudes and pulse widths of the low-frequency signal, the medium-frequency signal, and the high-frequency signal can be adjusted.

[0044] In the present invention, the controller 12 includes a central processing device, a memory device, and an input-output device. The controller 12 receives the operation instruction input by the operation unit 2 and generates a PWM signal 1 and a PWM signal 2 respectively according to the frequency and duty cycle preset in the memory device; and according to the intensity selection instruction received from the operation unit 2, generates a PWM signal H with an adjustable duty cycle and amplitude according to the voltage, duty cycle, and high-level time preset according to different intensities.

[0045] The waveform adjustment unit 13 is provided with a voltage control loop unit 17 and an H-bridge control loop unit 18. The voltage control loop unit 17 receives the PWM signal H generated by the controller 12 according to the pre-set voltage, duty cycle and high-level time, and generates a voltage signal, thereby controlling the intensity of the current stimulation of the stimulation imparting unit 8 according to the amplitude and pulse width of the low-frequency signal corresponding to the intensity selection instruction selected by the operating unit 2 and the amplitude and pulse width of the intermediate frequency signal and the high-frequency signal, and respectively forming a low-frequency signal, an intermediate frequency signal and a high-frequency signal according to different intensities and pre-set frequencies. The voltage control loop unit 17 is connected to the electrodes of the stimulation imparting unit 8 via the H-bridge control loop unit 18. The H-bridge control circuit unit 18 includes a plurality of transistors, and the on and off states of the transistors are controlled by the controller 12. The H-bridge control circuit unit 18 receives the instruction of the controller 12 and executes the closing, connecting and outflow direction conversion of the low-frequency, medium-frequency and high-frequency signals output to the electrodes of the stimulation imparting unit 8 according to the preset time, and turns off the signal according to the preset signal off time A in the output of the medium-frequency signal and the high-frequency signal, thereby forming a stimulation rest period; the H-bridge control circuit outputs a low-frequency signal, or one or both of the medium-frequency signal and the high-frequency signal according to the on and off states of each transistor, outputs a low-frequency signal when receiving the PWM signal 1, and outputs one or both of the medium-frequency signal and the high-frequency signal when receiving the PWM signal 2, and turns off the signal according to the on and off states of each transistor in the output of the medium-frequency signal and the high-frequency signal according to the preset signal off time A, thereby forming a stimulation rest period, forming an asymmetric composite waveform, and finally generating an asymmetric composite wave current, and outputting it to the stimulation imparting unit 8.

[0046] The controller 12 and the waveform adjustment unit 13 control and adjust the amplitude and pulse width of the low-frequency signal, the intermediate-frequency signal and the high-frequency signal, and are used to generate an asymmetric composite wave current.

[0047] The charging management unit 14 includes a charging management chip U2 connected to the rechargeable battery 10 and the USB connector 15 , so as to control the charging of the rechargeable battery 10 .

[0048] Example 1

[0049] like Figure 1 , Figure 2 and Figure 3As shown, in an embodiment 1 of a beauty device of the present invention, the stimulation imparting unit 8 is composed of two electrode groups, namely, electrode group EMS-A and electrode group EMS-B. Electrode group EMS-A is composed of electrode 1 8a in the form of a beauty roller, and electrode group EMS-B is composed of electrode 2 8b in the form of a beauty roller. This embodiment adopts an asymmetric composite wave synthesized by low frequency and medium frequency. The frequency of the low frequency signal and the frequency of the medium frequency signal are 100Hz and 2500Hz respectively. The two rollers of the stimulation imparting unit 8 are attached to the surface of the user's body, and the stimulation imparting unit 8 can flow out an asymmetric composite wave current synthesized by low frequency and medium frequency to the user's body surface according to a pre-set time, and the current of the composite waveform flows out periodically during the set period. The output time of the medium frequency signal is shorter than the output time of the low frequency signal, and the difference between the output time of the medium frequency signal and the output time of the low frequency signal is the signal off period. The controller 12 in the control unit 11 preferably adopts an MCU, and the power switch 2a and the intensity selection switch 2b of the operating unit 2 adopt a dual-purpose design. After the power switch 2a (ie, the strength selection switch 2b) is connected to the connector 219, it is connected to the connector 320, and then divided into two paths, one of which is connected to the P3.2 / INT0 pin of the MCU, and then connected to the D- pin of the USB connector 15 via the resistor R26, and the other is directly grounded.

[0050] like Figure 2 and Figure 3 As shown, the intensity indication unit 4 includes three intensity indication lamps, all of which are LED lamps, respectively denoted as LED1, LED2 and LED3. One end of each of the LED1, LED2 and LED3 is connected to the MCU through a resistor, that is, the intensity indication lamp LED1 is connected to the P2.5 pin of the MCU through a resistor R18, the intensity indication lamp LED2 is connected to the P2.4 pin of the MCU through a resistor R19, and the intensity indication lamp LED3 is connected to the / P2.3 pin of the MCU through a resistor R24. The other ends of the three LED lamps are all grounded. During the outflow of the asymmetric composite wave current, the MCU controls the opening and closing of the intensity indication lamp of the intensity indication unit 4 according to the intensity gear. When the intensity gear is 1, LED1 is in a continuous state, and the intensity indication lamp 1 of the intensity indication unit 4 is lit; when the intensity gear is 2, LED2 is in a continuous state, and the intensity indication lamp 2 of the intensity indication unit 4 is lit; when the intensity gear is 3, LED3 is in a continuous state, and the intensity indication lamp 3 of the intensity indication unit 4 is lit.

[0051] The strength in this embodiment is set to three levels: L, M, and H. Figure 1 As shown, the intensity display unit 4 is equipped with three intensity display lamps. The intensity display lamps are composed of an intensity display lamp L 4a, an intensity display lamp M 4b and an intensity display lamp H 4c. Figure 3The LED1, LED2 and LED3 described in Figure 1 The intensity indicating lamp L 4a, the intensity indicating lamp M 4b and the intensity indicating lamp H 4c correspond to each other.

[0052] like Figure 1 , Figure 2 and Figure 3 As shown, the control unit 11 includes a controller (MCU) 12, a waveform adjustment unit 13 and a charging management unit 14 arranged on a circuit board. After the rechargeable battery 10 is connected to the connector 1 16, it is divided into two paths, one is grounded, and the other is connected to the VCC pin of the MCU and then connected to the BAT pin of the charging management chip U2, and then connected to the USB connector 15 via the VCC pin of the charging management chip U2, and then connected to the power plug 7 through a USB connection 6. The MCU includes a central processing unit, a memory device, and an input / output device. According to the information recorded in the memory device in advance, the relevant information is processed and input and output are performed. The user presses the power switch 2a of the operating unit 2, and the beauty device is turned on. The user further presses the intensity selection switch 2b to select the intensity gear. The MCU executes the action instruction input through the operating unit 2, and generates PWM signal 1 and PWM signal 2 according to the frequency and duty cycle pre-set by the memory device. And executes the intensity selection instruction input through the aforementioned operating unit 2, and generates a PWM signal H with adjustable duty cycle and amplitude according to the voltage, duty cycle and high level time pre-set according to different intensity gears.

[0053] In the present invention, the waveform adjustment unit 13 includes a voltage control circuit unit 17 and an H-bridge control circuit unit 18, and the voltage control circuit unit 17 is connected to the electrodes of the stimulation imparting unit 8 via the H-bridge control circuit unit 18. Figure 3 As shown, the voltage control loop unit 17 is connected to the MCU, receives the PWM signal H generated by the MCU according to the preset voltage, duty cycle and high level time, generates a voltage signal, and synthesizes the asymmetric composite waveform output current according to the low frequency, medium frequency and high frequency signals of the preset frequency. And adjust the low frequency signal, medium frequency signal and high frequency signal according to the set amplitude and pulse width to control the intensity of the stimulation. The voltage control loop unit 17 is connected to the rechargeable battery 10 through an inductor coil L1, and is connected in parallel with the VCC pin of the MCU, and then divided into two paths, one of which is connected to the collector of a transistor Q9, the base of the transistor Q9 is connected to the P3.7 / INT3 / CCP2 pin of the MCU through a resistor R17, and the emitter of the transistor Q9 is grounded, and the other path is connected to the output voltage EMS-VCC after being connected in parallel with two capacitors C5 and C10 after a diode D3.

[0054] The voltage control loop unit 17 is connected to the voltage input terminal EMS-VCC of the H-bridge control loop 18, and is connected to the electrode of the stimulation imparting unit 8 via the H-bridge control loop unit 18. The H-bridge control loop unit 18 is equipped with 6 transistors, which are respectively recorded as Q3, Q4, Q5, Q6, Q7 and Q8, wherein Q3 and Q7 are PNP-type transistors, and Q4, Q5, Q6 and Q8 are NPN-type transistors. The collectors of the NPN-type transistors Q4 and Q6 are connected in parallel to the voltage input terminal of the H-bridge control loop 18. The emitters of the NPN-type transistors Q4 and Q6 are connected to the emitters of the PNP-type transistors Q3 and Q7, and are connected to the electrode group EMS-A (electrode 1) and the electrode group EMS-B (electrode 2) after parallel resistors R20 and R23. The bases of the PNP-type transistors Q3 and Q7 are connected to resistors R13 and R16 respectively, and the collectors of Q3 and Q7 are grounded respectively. The collectors of NPN transistors Q5 and Q8 are connected to the voltage input terminal EMS-VCC of the H-bridge control loop 18 through resistors R12 and R15, respectively, and the emitters are grounded respectively. The base of Q5 is connected to the P3.5 / CCP0_2 pin of the MCU via resistor R11 to receive PWM signal 1, and the base of Q8 is connected to the CCP1 / ADC0 / P1.0 pin of the MCU via resistor R14 to receive PWM signal 2. PWM signal 1 is a low-frequency signal, and PWM signal 2 is an intermediate-frequency signal. Transistors Q4 and Q3 form the left arm of the H-bridge, which is controlled by Q5, and transistors Q6 and Q7 form the right arm of the H-bridge, which is controlled by Q8. The H-bridge control loop unit 18 controls the opening and closing of the frequency signal output to the stimulation imparting unit 8 and the outflow direction of the signal according to the pre-set time, and at the same time controls the output of the intermediate frequency and high frequency signals to temporarily turn off the signal according to the pre-set time A, and synthesizes the low frequency and intermediate frequency signals to form an asymmetric composite waveform, and finally generates an asymmetric composite wave current to output to the stimulation imparting unit 8.

[0055] According to the signal received by the MCU and the voltage control circuit unit 17, the H-bridge control circuit unit 18 turns on the transistor Q5 and turns off the transistor Q8. At this time, the transistors Q3 and Q6 are turned on, and the transistors Q4 and Q7 are turned off. The two electrode groups of the stimulation imparting unit 8 output a low-frequency signal from the electrode group EMS-A (electrode 1 in the form of a beauty roller) to the electrode group EMS-B (electrode 2 in the form of a beauty roller). Further, the transistor Q8 is turned on and the transistor Q5 is turned off. At this time, the transistors Q4 and Q7 are turned on, and the transistors Q3 and Q6 are turned off. The two electrode groups of the stimulation imparting unit 8 output an intermediate frequency signal from the electrode group EMS-B (electrode 2 in the form of a beauty roller) to the electrode group EMS-A (electrode 1 in the form of a beauty roller). And, when the preset time is reached, the output of the intermediate frequency signal is turned off by turning off the transistor Q8, generating a signal off period. Furthermore, transistor Q5 is turned on again and transistor Q8 is turned off. At this time, transistors Q3 and Q6 are turned on, Q4 and Q7 are turned off, and a low-frequency signal is output from electrode group EMS-A to electrode group EMS-B. This cycle is repeated, and the electrodes of the electrode group flow an asymmetric complex wave current to the user's body surface.

[0056] During the current outflow period, the MCU controls the intensity indicating lamp of the intensity indicating unit 4 to turn on and off according to the stimulation intensity.

[0057] In this embodiment, when the intensity is at the L position, the voltage is 20.2V, the high level time of the low frequency signal is LFHTL1, and the duty cycle is LFDRL1; when the intensity is at the M position, the voltage is 22V, the high level time of the low frequency signal is LFHTM1, and the duty cycle is LFDRM1; when the intensity is at the H position, the voltage is 23.3V, the high level time of the low frequency signal is LFHTH1, and the duty cycle is LFDRH1. The duty cycle of the intermediate frequency can be set to be equal at each position, which is MHFDR1, and the output time is T1.

[0058] Figure 4 The waveform diagram of the asymmetric composite wave of Example 1. The horizontal axis represents time, and the vertical axis represents voltage. The negative half axis of the Y axis represents the output low-frequency signal, and the positive half axis of the Y axis represents the output intermediate-frequency signal. The frequency of the low frequency is 100 Hz, and the frequency of the intermediate frequency is 2500 Hz. The positive half axis of the Y axis has the off period of the intermediate-frequency signal, and the total time of the off period of the intermediate-frequency signal is P1% of the output time of the low-frequency signal in the opposite direction.

[0059] The charging management unit 14 includes a charging management chip U2 connected to the rechargeable battery 10 and the USB connector 15, which controls the charging of the rechargeable battery 10 of the beauty device of the present invention. The charging management unit 14 is also connected to the MCU and connected to the charging indication unit 3 through the MCU to control the charging indication light to turn on and off.

[0060] The charging management chip U2 can use the SLM4054 chip of Sola-IC, the PW4054 chip of PWChip Semi Technology or the HX6001 chip of Hexin. The charging management chip U2 described in this embodiment adopts the SLM4054 chip of Sola-IC, which includes a BAT pin, a GND pin, a CHRG pin, a PROG pin, and a VCC pin; the GND pin is directly grounded, the PROG pin is grounded via a resistor R1, the BAT pin is connected to the VCC pin of the MCU and then connected to the rechargeable battery 10 through a connector 1 16, providing a charging current to the rechargeable battery 10, a capacitor C3 is provided between the two poles of the rechargeable battery 10, the CHRG pin is connected to the P2.0 pin of the MCU, and the MCU receives a charging status signal. When the battery is in a charging state, the connection of the charging indicator LED1 circuit is connected, and the charging indicator LED1 lights up. When the battery is fully charged, the connection of the charging indicator LED1 circuit is cut off, and the charging indicator LED1 goes out. The BAT pin and the CHRG pin are connected to the two ends of a resistor R2, and the VCC pin is divided into two paths, one is connected to the V+ pin of the USB connector, and the other is connected to the ground after passing through a capacitor C1. The charging indicator LED1 can be selected to be shared with the intensity indicator light or set separately.

[0061] The USB connector 15 includes V+, D-, D+, ID, and G pins. The V+ pin is connected to the VCC pin of the charging management chip U2, the D- pin is connected to the resistor R26, the D+ pin is connected to the RXD pin of the MCU, the ID pin is connected to the TXD pin of the MCU, and the G pin is grounded.

[0062] Example 2

[0063] like Figure 5 As shown, the beauty device of embodiment 2 of the present invention has the same structure as embodiment 1, except that the stimulation imparting unit 8 is composed of four electrodes (electrode 1 8a, electrode 2 8b, electrode 3 8c and electrode 4 8d), and flows an asymmetric composite wave current synthesized by low frequency, medium frequency and high frequency to the user's body surface. Figure 3 As shown, among the above four electrodes, electrode 18a and electrode 28b form an electrode group, which is electrode group EMS-A, and electrode 38c and electrode 48d form an electrode group, which is electrode group EMS-B. The frequency of the low-frequency signal is 128 Hz, the frequency of the medium-frequency signal is 1786 Hz, and the frequency of the high-frequency signal is 12000 Hz.

[0064] Unlike Example 1 in which a low-frequency signal is first outputted in sequence between two electrode groups and then an intermediate-frequency signal is outputted in a direction opposite to the low-frequency signal, this embodiment first outputs a low-frequency signal in sequence between two electrode groups and then an intermediate-frequency signal and a high-frequency signal are outputted in sequence in a direction opposite to the low-frequency signal.

[0065] The transistor Q5 is turned on and the transistor Q8 is turned off. At this time, as in Example 1, a low-frequency signal is output from the electrode group EMS-A (electrodes 1, 2) to the electrode group EMS-B (electrodes 3, 4) between the two electrode groups of the stimulation imparting unit 8. The transistor Q8 is turned on and the transistor Q5 is turned off. At this time, as in Example 1, an intermediate-frequency signal and a high-frequency signal are output from the electrode group EMS-B (electrodes 3, 4) to the electrode group EMS-A (electrodes 1, 2) between the two electrode groups of the stimulation imparting unit 8. Furthermore, when a predetermined time is reached, the output of the intermediate-frequency and high-frequency signals is turned off by turning off the transistor Q8, generating a signal off period. Furthermore, transistor Q5 is turned on again and transistor Q8 is turned off. At this time, transistors Q3 and Q6 are turned on, Q4 and Q7 are turned off, and a low-frequency signal is output from electrode group EMS-A to electrode group EMS-B. This cycle is repeated, and the electrodes of the electrode group flow an asymmetric complex wave current to the user's body surface.

[0066] Next, the implementation state of outputting two kinds of signals, medium frequency and high frequency, from the electrode group EMS-B to the electrode group EMS-A is described. When the PWM signal 2 is set to two kinds of signals, medium frequency and high frequency, the transistor Q8 is turned on, at which time the transistors Q4 and Q7 are turned on, Q6 and Q3 are turned off, and the MCU generates the medium frequency PWM signal 2 according to the pre-set time, frequency and duty cycle. The voltage control loop unit 17 adjusts the duty cycle according to the PWM signal 2 received from the MCU, generates the voltage used for the medium frequency, and outputs the medium frequency signal from the electrode group EMS-B to the electrode group EMS-A via the H-bridge loop unit 18. When the pre-set time is reached, the transistor Q8 is turned off once according to the pre-set time, forming a signal off period. After reaching the preset time, the transistor Q8 is turned on again, and the MCU generates a high-frequency PWM signal 2 according to the preset time, frequency and duty cycle. The voltage control loop unit 17 adjusts the duty cycle according to the PWM signal 2 received from the MCU, generates a voltage used for the high frequency, and outputs a high-frequency signal from the electrode group EMS-B to the electrode group EMS-A via the H-bridge control loop unit 18. After reaching the preset time, the transistor Q8 is turned off to form a signal off period.

[0067] In the beauty device of this embodiment, when the intensity is L, the voltage is 9.8V, the high level time of the low frequency signal is LFHTL2, and the duty cycle is LFDRL2; when the intensity is M, the voltage is 11.4V, the high level time of the low frequency signal is LFHTM2, and the duty cycle is LFDRM2; when the intensity is H, the voltage is 12.6V, the high level time of the low frequency signal is LFHTH2, and the duty cycle is LFDRH2. The duty cycles of the intermediate frequency and high frequency can be set to be equal at each intensity level, both MHFDR2, and the output time is set to T2.

[0068] Figure 6 It is a schematic diagram of the asymmetric composite waveform of Example 2 of the present invention. The horizontal axis represents time, and the vertical axis represents voltage. The negative half axis of the Y axis represents the output low-frequency signal, and the positive half axis of the Y axis represents the output intermediate-frequency signal and high-frequency signal. The frequency of the low frequency is 128 Hz, the frequency of the intermediate frequency is 1786 Hz, and the frequency of the high frequency is 12000 Hz. The positive half axis of the Y axis has the off period of the intermediate-frequency and high-frequency signals, and the sum of the off periods of the intermediate-frequency and high-frequency signals is P2% of the output time of the low-frequency signal in the opposite direction.

[0069] In the above-mentioned embodiments 1 and 2, the low-frequency signal is set at the negative half axis of the Y axis, and the intermediate frequency and high frequency signals are set at the positive half axis of the Y axis. As long as the output direction of the low-frequency signal is opposite to the output direction of the intermediate frequency and high frequency signals, the direction of the Y axis is not limited. The intermediate frequency and high frequency signals can also be set to the negative half axis of the Y axis, and the low-frequency signal can be set to the positive half axis of the Y axis. Secondly, the frequency of the low-frequency signal, the intermediate frequency signal and the high frequency signal set in the embodiment of the present invention is only one of the implementation methods. The frequency can be set as needed within the range of 1 to 1000 Hz for low frequency, 1000 to 10000 Hz for intermediate frequency, and above 10000 Hz for high frequency. The frequency is not limited to the numerical value of the above-mentioned embodiment. In addition, the voltage, high-level time, and duty cycle set by the beauty device in embodiments 1 and 2 of the present invention according to the intensity are only part of the implementation methods of the present invention, and are not limited to the numerical values ​​described in the embodiments, and can be set according to actual needs. In addition, in embodiments 1 and 2 of the present invention, the percentage of the rest time in the output time of the low-frequency current output in the reverse direction does not need to be limited.

[0070] The present invention is clearly and completely described through the technical solutions in the above embodiments. It is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. For those skilled in the art, various replacement examples or modifications or deformations can be obtained based on the above description, and the present invention includes the various replacement examples, modifications or deformations within the scope of the main purpose.

Claims

1. A beauty device, comprising a body and a stimulation imparting unit, wherein the body is provided with an operating unit connected to a circuit board, an intensity indicating unit, a charging indicating unit, a rechargeable battery, a control unit and a plurality of connectors; the stimulation imparting unit is composed of two or more electrodes, characterized in that: The stimulation imparting unit and the operating unit are respectively connected to the control unit, and the operating unit includes a power switch and an intensity selection switch; The control unit generates a low-frequency signal, an intermediate-frequency signal and a high-frequency signal according to the received instruction input by the operating unit, forms an asymmetric composite waveform after processing, and generates an asymmetric composite wave current; The stimulation imparting unit is used to output the asymmetric complex wave current according to a pre-set time; the electrodes in the stimulation imparting unit form two electrode groups, each of which is composed of more than one electrode, and the two electrode groups sequentially output a low-frequency signal first, and then sequentially output one or both of an intermediate frequency signal and a high frequency signal in a direction opposite to the direction of the low-frequency signal, or sequentially output one or both of an intermediate frequency signal and a high frequency signal first, and then output a low-frequency signal in a direction opposite to the direction of the intermediate frequency signal and the high frequency signal; During the output of the intermediate frequency signal and the high frequency signal, there is one or more signal off periods, and the sum of the time of all off periods is recorded as the signal off time A. By setting the sequential reverse output of the low frequency, intermediate frequency, and high frequency signals and the signal off time A, an asymmetric composite waveform is formed, and an asymmetric composite wave current is generated. The asymmetric composite wave current circulates out according to a set period; The control unit includes a controller, a waveform adjustment unit and a charging management unit; the controller and the waveform adjustment unit are used to generate an asymmetric composite wave current; The controller comprises a central processing unit, a memory device, and an input-output device. The controller receives an action instruction input by the operation unit and generates a PWM signal 1 and a PWM signal 2 respectively according to a frequency and a duty cycle preset in the memory device. and generating a PWM signal H with adjustable duty cycle and amplitude according to the voltage, duty cycle and high level time set in advance according to different intensities according to the intensity selection instruction received from the operation unit; The waveform adjustment unit is provided with a voltage control loop unit and an H-bridge control loop unit; The voltage control loop unit receives the PWM signal H generated by the controller according to the preset voltage, duty cycle and high-level time, and generates a voltage signal, thereby controlling the intensity of the current stimulation of the stimulation imparting unit according to the amplitude and pulse width of the low-frequency signal corresponding to the intensity selection instruction selected by the operating unit and the amplitude and pulse width of the intermediate frequency signal and the high-frequency signal, and respectively forming a low-frequency signal, an intermediate frequency signal and a high-frequency signal according to different intensities and at the frequencies respectively set in advance; the voltage control loop unit is connected to the electrode of the stimulation imparting unit via the H-bridge control loop unit; The H-bridge control loop unit includes a plurality of transistors, and the on or off state of each transistor is controlled by the controller. The H-bridge control loop unit receives the instruction of the controller and executes the closing, connecting and outflow direction conversion of the low-frequency, medium-frequency and high-frequency signals output between the electrode groups of the stimulation imparting unit according to the preset time, and turns off the signal according to the preset signal off time A during the output of the medium-frequency signal and the high-frequency signal to form a stimulation rest period; the H-bridge control loop outputs a low-frequency signal, or one or both of the medium-frequency signal and the high-frequency signal according to the on or off state of each transistor, outputs a low-frequency signal when receiving PWM signal 1, and outputs one or both of the medium-frequency signal and the high-frequency signal when receiving PWM signal 2, and turns off the signal according to the preset signal off time A during the output of the medium-frequency signal and the high-frequency signal according to the on or off state of each transistor to form a stimulation rest period, and on this basis, forms an asymmetric composite waveform, and finally generates an asymmetric composite wave current, and outputs it to the stimulation imparting unit; The charging management unit includes a charging management chip connected to the rechargeable battery and the USB connector, and is used to control the charging of the rechargeable battery; The intensity indication unit is composed of the same number of intensity indication lamps as the intensity level grades, and the charge indication unit is composed of one or more charge indication lamps.

2. The beauty device according to claim 1, characterized in that: The total output time of the intermediate frequency signal and the high frequency signal is shorter than the output time of the low frequency signal, and the difference between the total output time of the intermediate frequency signal and the high frequency signal and the output time of the low frequency signal is the signal off time A.

3. The beauty device according to claim 1, characterized in that: The controller and the waveform adjustment unit control and adjust the amplitude and pulse width of the low-frequency signal, the intermediate-frequency signal, and the high-frequency signal.

4. The beauty device according to claim 1, characterized in that: The low-frequency signal is a pulse wave, and the intermediate-frequency signal and the high-frequency signal are one of a pulse wave, a square wave, a triangle wave and a sine wave; the frequency ranges of the low-frequency signal, the intermediate-frequency signal and the high-frequency signal are below 1000 Hz, 1000-10000 Hz and above 10000 Hz respectively.

5. The beauty device according to claim 1, characterized in that: The range of the signal off time A is 0ms <A<1000ms。

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