CN113577538A

CN113577538A - Beauty device

Info

Publication number: CN113577538A
Application number: CN202110972294.4A
Authority: CN
Inventors: 佐野昌己; 王辉
Original assignee: Japan Beauty And Health Comprehensive Research Institute
Current assignee: Japan Beauty And Health Comprehensive Research Institute
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2021-11-02

Abstract

The invention discloses a beauty device, which comprises a body and a stimulus applying unit, wherein the body is internally 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 stimulus applying unit is composed of more than 2 electrodes, the electrodes form two electrode groups, the electrode groups are respectively composed of more than 1 electrode, the two electrode groups output low-frequency signals in sequence, then output one or two of intermediate-frequency and high-frequency signals in sequence in a direction opposite to the direction of the low-frequency signals or output one or two of the intermediate-frequency and high-frequency signals and then output the low-frequency signals, the output period of the intermediate-frequency and high-frequency signals is provided with more than 1 signal turn-off period, the control unit comprises a controller, a waveform adjusting unit and a charging management unit, the stimulus applying unit flows out the non-pair combined by the low-frequency and one or two of the intermediate-frequency and high-frequency signals according to the preset time The composite wave current is called.

Description

Beauty device

Technical Field

The present invention relates to a cosmetic device, and more particularly, to a cosmetic device which closely contacts a body surface of a user and discharges an asymmetric complex current formed of low, medium, and high frequencies to the body surface of the user.

Background

In the related art, as a means for stimulating the surface of the body of a user to achieve cosmetic effects such as facial lifting, muscle training, body relaxation, fatigue recovery, wrinkle improvement, etc., cosmetic treatments using electrical therapy to which electrical stimulation is applied are various, and various cosmetic devices to which these therapies are applied have been developed.

The low, medium and high frequencies of conventional electrical stimulation applications have advantages and disadvantages. The low frequency can effectively promote muscle movement, the stimulation is strong, but because the skin resistance is large, the human body can easily feel the too strong stimulation and pain, and many people cannot bear the stimulation. In addition, because the skin resistance is large under the low-frequency condition, the current can only reach subcutaneous several millimeters, the current cannot reach deep muscles, the aim of promoting muscles which need to be exercised actually cannot be fulfilled, and the skin is strongly painful by further increasing the intensity for enhancing the stimulation effect. Compared with low frequency, the medium frequency wavelength is short, the resistance of the skin is relatively small, the burden of the skin is small, and the current can reach 2-3 cm under the skin. But the stimulation of body feeling is relatively weak compared to low frequencies. The high frequency has a shorter wavelength than the medium frequency, the skin impedance is smaller than the medium frequency, the current can reach more than 10 cm under the skin and can reach the vascular tissue, so that the effects of expanding blood vessels, promoting blood circulation, and improving shoulder pain and waist pain can be achieved. However, the high frequency is less irritating than the medium frequency.

The single-waveform low-frequency electric therapy is simple in technology and is commonly adopted by most of the prior art beauty devices, but the beauty devices cause large burden on the skin of a user and cannot reach a deep muscle layer. If the amount of current is increased in order to increase the effect, pain is induced by stimulating pain receptors on the skin. Moreover, the cosmetic device cannot adjust the amplitude and the pulse width, and has a single stimulation form and poor user experience. In order to solve these problems, a few products have been improved, and for example, a cosmetic device has been developed in which a medium-frequency or high-frequency signal is superimposed on a low-frequency signal by a superimposition method or the like. However, since the intermediate frequency or the high frequency signal is superimposed on the low frequency, although it is possible to alleviate the unpleasant feeling such as pain felt by the user when increasing the current by relatively decreasing the peak current value, the intermediate frequency and the high frequency signal have a small component and cannot sufficiently stimulate deep muscle and vascular tissues, and since the stimulation signal used is still a regular single waveform, the user is apt to suffer from habitual fatigue to the stimulation, and the amplitude and the pulse width cannot be adjusted according to the user's needs, so that the feeling of use is low, and it is difficult to continue the long-term use. These factors cause the cosmetic device in the prior art to be unable to effectively overcome the disadvantages of low frequency, medium frequency and high frequency and to effectively take into account the advantages of low frequency, medium frequency and high frequency, which are the problems to be solved by those skilled in the art.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention provides a cosmetic device capable of adjusting amplitude and pulse width of an asymmetric complex wave current while overcoming the respective disadvantages of low frequency, intermediate frequency, and high frequency, and effectively utilizing the respective advantages of low frequency, intermediate frequency, and high frequency, on the premise of improving the feeling of use and convenience. In the present invention, the band is classified according to a classification standard generally used in the field of beauty devices and body treatment instruments, and the low frequency band is 1000Hz or less, the medium frequency band is 1000 to 10000Hz, and the high frequency band is 10000Hz or more. As a stimulation device that discharges an electric current to the body surface of a user, it is generally called a beauty apparatus, a body stimulation device, a therapeutic device, or the like, and is collectively called a beauty device in the present invention.

In order to solve the technical problems, the invention provides a beauty device, which comprises a machine body and a stimulation giving unit, wherein an operation unit, a strength representing unit, a charging representing unit, a rechargeable battery, a control unit and a plurality of connectors are arranged in the machine body, and the operation unit, the strength representing unit, the charging representing unit, the rechargeable battery, the control unit and the connectors are connected on a circuit board; the stimulation applying unit is composed of more than 2 electrodes, and is characterized in that:

the stimulation giving unit and the operation unit are respectively connected with the control unit, and the operation unit comprises a power switch and an intensity selection switch;

the control unit generates a low-frequency signal, a medium-frequency signal and a high-frequency signal according to the received instruction input by the operation unit, and an asymmetric composite waveform is formed after processing and an asymmetric composite current is generated;

the stimulation giving unit is used for outputting the asymmetric complex wave current according to preset time; the electrodes in the stimulation giving unit form two electrode groups, each electrode group consists of more than 1 electrode, the two electrode groups sequentially output low-frequency signals first, then sequentially output one or two of intermediate-frequency signals and high-frequency signals in a direction opposite to the direction of the low-frequency signals or sequentially output one or two of intermediate-frequency signals and high-frequency signals first, and then output the low-frequency signals in a direction opposite to the direction of the intermediate-frequency signals and the direction of the high-frequency signals;

the output period of the intermediate frequency signal and the high frequency signal is provided with more than 1 signal turn-off period, the time sum of all the turn-off periods is recorded as signal turn-off time A, an asymmetric composite waveform is formed through the arrangement of sequential reverse direction output of the low frequency signal, the intermediate frequency signal and the high frequency signal and the arrangement of the signal turn-off time A, and asymmetric composite wave current is generated and circularly flows out according to a set period.

Further, the cosmetic device of the present invention, wherein:

the sum of the output times 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 sum of the output times of the intermediate frequency signal and the high frequency signal and the output time of the low frequency signal is the signal turn-off time A.

The intensity indicating means is composed of the same number of intensity indicating lamps as the intensity level gradation, and the charge indicating means is composed of 1 or more charge indicating lamps.

The control unit comprises a controller, a waveform adjusting unit and a charging management unit; the controller and the waveform adjusting unit are used for generating asymmetric complex wave current; the controller comprises a central processing device, a memory device and an input-output device, receives the action command input by the operation unit and respectively generates a PWM signal 1 and a PWM signal 2 according to the preset frequency and duty ratio in the memory device; generating a PWM signal H with adjustable duty ratio and amplitude according to the intensity selection instruction received from the operation unit and the voltage, duty ratio and high level time which are set according to different intensities in advance; a voltage control loop unit and an H-bridge control loop unit are arranged in the waveform adjusting unit; the voltage control loop unit receives a PWM signal H generated by the controller according to preset voltage, duty ratio and high level time, generates a voltage signal, controls the intensity of current stimulation of the stimulation giving unit according to the amplitude and pulse width of a low-frequency signal corresponding to the intensity selection command selected by the operation unit and the amplitude and pulse width of an intermediate-frequency signal and a high-frequency signal, and respectively forms a low-frequency signal, an intermediate-frequency signal and a high-frequency signal according to different intensities and preset frequencies; the voltage control loop unit is connected with the electrode of the stimulation giving unit through an H-bridge control loop unit; the H-bridge control loop unit comprises a plurality of triodes, the conducting or cutting-off state of each triode is controlled by the controller, the H-bridge control loop unit receives an instruction of the controller to execute the switching-off, switching-on and flowing-out direction conversion of low-frequency, intermediate-frequency and high-frequency signals output between the electrode groups of the stimulation endowing unit according to preset time, and cuts off the signals according to preset signal cutting-off time A in the output process of the intermediate-frequency signals and the high-frequency signals to form a stimulation resting period; the H-bridge control loop respectively outputs a low-frequency signal or one or two of an intermediate-frequency signal and a high-frequency signal according to the connection or disconnection of each triode, outputs the low-frequency signal when receiving a PWM signal 1, outputs one or two of the intermediate-frequency signal and the high-frequency signal when receiving a PWM signal 2, and switches off the signals according to the connection or disconnection state of each triode in the output of the intermediate-frequency signal and the high-frequency signal according to a preset signal switching-off time A to form a resting period of stimulation, on the basis of which an asymmetric composite waveform is formed, and finally generates an asymmetric composite wave current which is output to a stimulation giving unit; the charging management unit comprises a charging management chip U2 connected with the rechargeable battery and the USB connector for controlling the charging of the rechargeable battery.

The controller and the waveform adjusting unit control and adjust the amplitudes and pulse widths of the low-frequency signal, the intermediate-frequency signal and the high-frequency signal.

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 triangular wave and a sine wave; the frequency ranges of the low-frequency signal, the intermediate-frequency signal and the high-frequency signal are respectively below 1000Hz, above 1000-10000Hz and above 10000 Hz.

The signal off-time a ranges from 0ms < a <1000 ms.

Compared with the prior art, the invention has the beneficial effects that:

the beauty device of the invention effectively overcomes the defects of low frequency, intermediate frequency and high frequency, simultaneously considers the advantages of low frequency, intermediate frequency and high frequency, can realize the minimization of the burden on the skin, and simultaneously leads the current to reach the deep muscle from the subcutaneous superficial part, thereby greatly improving the beauty effect. By synthesizing low-frequency, intermediate-frequency and high-frequency signals, the stimulation mode changes are generated, a single stimulation mode is avoided, the skin burden caused by low frequency is relieved, and the problem that the stimulation sense of intermediate frequency and high frequency is weak is solved.

The long-term use of regular electrical stimulation signals can cause habitual fatigue of the user to the stimulation, and reduce the desire of the user for long-term continuous use. Therefore, the cosmetic device of the invention sets a signal off period of a certain time in the output period of the medium-frequency and high-frequency signals, can generate the rhythm sense of hand massage, changes the traditional single fixed stimulation mode by utilizing the off and on of the signals, and can obtain better stimulation feeling by the user through the change of stimulation.

The cosmetic device of the invention can also adjust the amplitude and pulse width of the low frequency signal, the intermediate frequency signal and the high frequency signal, and a user can select the stimulation intensity according to the self condition and the use purpose, thereby further improving the use convenience. In addition, the output directions of the intermediate frequency signal and the high frequency signal are arranged in the opposite direction to the output direction of the low frequency signal, so that the low frequency current and the intermediate frequency current and the high frequency current flow out alternately, the portable cosmetic device with the rechargeable battery has the property of alternating current, the problem that the direct current stimulates a skin pain receptor to cause stimulation pain is solved, and the small portable efficient cosmetic device is realized.

Drawings

Fig. 1 is a schematic perspective view of a cosmetic device according to embodiment 1 of the present invention;

fig. 2 is a schematic view of the internal construction of the beauty device of the present invention;

fig. 3 is a schematic circuit diagram of the cosmetic device of the present invention;

fig. 4 is a schematic view of an asymmetric complex waveform of the cosmetic device of embodiment 1 of the present invention;

fig. 5 is a schematic perspective view of a cosmetic device according to embodiment 2 of the present invention;

fig. 6 is a schematic diagram of an asymmetric composite waveform of the cosmetic device of embodiment 2 of the present invention.

In the figure:

1-machine body 2-operation unit 2 a-power switch

2 b-intensity selection switch 3-charge presentation unit 3 a-charge presentation light

4-intensity-indicating unit 4 a-intensity-indicating lamp L4 b-intensity-indicating lamp M

4 c-intensity indicating lamp H5-charging interface 6-USB connection

7-power plug 8-stimulus imparting unit 8 a-electrode 1

8 b-electrode 28 c-electrode 38 c-electrode 4

9-circuit board 10-rechargeable battery 11-control unit

12-controller 13-waveform adjusting unit 14-charge management unit

15-USB connector 16-connector 117-Voltage control Loop Unit

18-H bridge control loop unit 19-connector 220-connector 3

Detailed Description

The design idea of the beauty device is as follows: after the low-frequency signals are output in opposite directions, one or two of the intermediate-frequency signals and the high-frequency signals are output, or one or two of the intermediate-frequency signals and the high-frequency signals are output in opposite directions, the low-frequency signals are output, and in the process of outputting the intermediate-frequency signals and the high-frequency signals, an asymmetric composite waveform is formed in the period of turning off the signals. The stimulation device can effectively utilize the effects of stimulating deep muscles and vascular tissues by using the medium frequency and the high frequency while relieving the problem of overlarge low-frequency skin resistance and overlarge stimulation, changes the traditional stimulation mode of a single rule through the change of the frequency and the adjustment of the amplitude and the pulse width of low-frequency, medium-frequency and high-frequency signals, realizes the rhythm of hand massage, and avoids habitual fatigue caused by the stimulation of a user on the rule monotony. In addition, the frequency signals are alternately discharged in the opposite direction, so that the current has the property of alternating current, and the risk of overlarge skin stimulation caused by direct current is reduced.

The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings and specific embodiments, which are only illustrative of the present invention and are not intended to limit the present invention.

As shown in fig. 1 and 2, the cosmetic device provided by the present invention comprises a body 1 that can be held by a single hand of a user and a stimulation unit 8, wherein a circuit board 9 is disposed in the body 1, and the circuit board is provided with an operation unit 2, a charging indication unit 3, a strength indication unit 4, a rechargeable battery 10, a control unit 11 and a plurality of connectors. The stimulation giving unit 8 and the operation unit 2 are respectively connected to the control unit 11, and the instruction input through the operation unit 2 is processed by the control unit 11 to generate an output signal and output the output signal to the stimulation giving unit 8, where the control unit 11 includes a Controller 12, a waveform adjusting unit 13, and a charging management unit 14, and the Controller 12 preferably employs an mcu (micro Controller unit). The stimulus applying means 8 is attached to the body surface of the user, and the stimulus applying means 8 can supply an asymmetric complex current in which a low frequency signal and one of a medium frequency signal and a high frequency signal which are output in the direction opposite to the output direction of the low frequency signal are combined to the body surface of the user at a predetermined timing. The operation unit 2 includes a power switch 2a and an intensity selection switch 2b, and the power switch 2a and the intensity selection switch 2b may be provided in combination or separately. The power switch 2a is pressed to turn on or off the beauty apparatus, and the intensity is selected by the pressing intensity selection switch 2b, and the selected intensity can be confirmed by the intensity indicating unit 4 provided on the body 1. The intensity display means 4 is constituted by the same number of intensity display lamps as the intensity level gradation, and is assigned according to the intensity level of the current stimulation by the stimulation applying means 8. The intensity indicates the intensity step assignment of the lamp, and can be arbitrarily set according to the necessary intensity steps. The present embodiment includes an intensity-indicating lamp L4 a, an intensity-indicating lamp M4 b, and an intensity-indicating lamp H4 c; the charge indication means 3 is composed of 1 or more charge indication lamps 3a, and the charge indication lamp 3a may be shared with one of the intensity indication lamps or may be provided separately. The charging interface 5 is composed of a USB connector 15, the rechargeable battery 10 is connected with the connector 116 and then divided into two paths, one path is grounded, the other path is connected with the VCC pin of the MCU and then connected with 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 via a USB connection 6.

The stimulus applying means 8 is configured to output the asymmetric complex current at a predetermined time, and the stimulus applying means 8 is configured by 2 or more electrodes, two electrodes of the electrode 18 a and the electrode 28 b as shown in fig. 1, and four electrodes of the electrode 18 a, the electrode 28 b, the electrode 38 c, and the electrode 48 d as shown in fig. 5. As shown in fig. 3, the electrodes in the stimulus applying unit 8 form two electrode groups of EMS-A and EMS-B, each of which is composed of more than 1 electrode, and the two electrode groups sequentially output the low frequency signal first and then sequentially output one or two of the intermediate frequency signal and the high frequency signal in A direction opposite to the direction of the low frequency signal or sequentially output one or two of the intermediate frequency signal and the high frequency signal first and then output the low frequency signal again in A direction opposite to the direction of the intermediate frequency signal and the high frequency signal; as shown in fig. 4 and 6, the intermediate frequency signal and high frequency signal output period is provided with a signal off period of 1 or more times, the sum of the times of all the off periods is defined as a signal off time a, the sum of the output times of the intermediate frequency signal and high frequency signal is shorter than the output time of the low frequency signal, and the difference between the sum of the output times of the intermediate frequency signal and high frequency signal and the output time of the low frequency signal is defined as the signal off time a. The asymmetric composite waveform is formed by sequentially outputting low-frequency, medium-frequency and high-frequency signals in opposite directions and setting the signal turn-off time A, and asymmetric composite wave current is generated and circularly flows out according to a set period.

As shown in fig. 2, the control unit 11 includes a controller 12, a waveform adjustment unit 13, and a charge management unit 14; the control unit 11 generates a low-frequency signal, an intermediate-frequency signal and a high-frequency signal according to the received instruction input by the operation unit 2, processes the signals to form an asymmetric composite waveform, and generates an asymmetric composite wave current; in the invention, 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 triangular wave and a sine wave; the frequency ranges of the low-frequency signal, the intermediate-frequency signal and the high-frequency signal are respectively below 1000Hz, above 1000-10000Hz and above 10000 Hz. The intermediate frequency signal and the high frequency signal output period are provided with more than 1 signal turn-off period, and the signal turn-off period is within a certain range (0ms < A <1000 ms). The amplitudes and pulse widths of the low-frequency signal, the intermediate-frequency signal and the high-frequency signal can be adjusted.

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

A voltage control loop unit 17 and an H-bridge control loop unit 18 are arranged in the waveform adjusting unit 13. The voltage control circuit unit 17 receives the PWM signal H generated by the controller 12 according to the preset voltage, duty ratio and high level time, generates a voltage signal, controls the intensity of the current stimulation by the stimulation applying unit 8 according to the amplitude and pulse width of the low frequency signal and the amplitudes and pulse widths of the intermediate frequency signal and the high frequency signal corresponding to the intensity selection command selected by the operation unit 2, and forms the low frequency signal, the intermediate frequency signal and the high frequency signal at the preset frequencies according to the different intensities. The voltage control circuit unit 17 is connected to the electrodes of the stimulus applying unit 8 via an H-bridge control circuit unit 18. The H-bridge control loop unit 18 includes a plurality of triodes, the on and off states of the triodes are controlled by the controller 12, the H-bridge control loop unit 18 receives an instruction of the controller 12 to perform switching of the off, on and off directions of the low frequency, intermediate frequency and high frequency signals output to the electrodes of the stimulus applying unit 8 according to a preset time, and turns off the signals in the intermediate frequency and high frequency signal outputs according to a preset signal off time a to form a resting period of the stimulus; the H-bridge control loop respectively outputs a low-frequency signal or one or two of an intermediate-frequency signal and a high-frequency signal according to the on-off state of each triode, outputs the low-frequency signal when receiving a PWM signal 1, outputs one or two of the intermediate-frequency signal and the high-frequency signal when receiving a PWM signal 2, and turns off the signals according to the on-off state of each triode and the preset signal turn-off time A in the output of the intermediate-frequency signal and the high-frequency signal, so that a stimulation rest period is formed, an asymmetric composite waveform is formed, and finally an asymmetric composite wave current is generated and output to the stimulation giving unit 8.

The controller 12 and the waveform adjusting unit 13 control and adjust the amplitudes and pulse widths of the low frequency signal, the intermediate frequency signal, and the high frequency signal, and are used to generate an asymmetric complex current.

The charging management unit 14 includes a charging management chip U2 connected to the rechargeable battery 10 and the USB connector 15, thereby controlling the charging of the rechargeable battery 10.

Example 1

As shown in fig. 1, 2 and 3, in embodiment 1 of the cosmetic device of the present invention, the stimulus applying unit 8 is composed of two electrode groups, i.e., an electrode group EMS-A and an electrode group EMS-B. Electrode set EMS-A is comprised of electrodes 18A in the form of cosmetic rollers and electrode set EMS-B is comprised of electrodes 28B in the form of cosmetic rollers. This embodiment uses an asymmetric composite of low and medium frequencies. The frequency of the low frequency signal and the frequency of the intermediate frequency signal are 100Hz and 2500Hz, respectively. The two rollers of the stimulation applying unit 8 are attached to the body surface of the user, the stimulation applying unit 8 can output asymmetric composite wave current synthesized by low frequency and medium frequency to the body surface of the user according to preset time, and the current of the composite wave form periodically and circularly flows out in the set period. The output time of the intermediate frequency signal is shorter than that of the low frequency signal, and the difference between the output time of the intermediate frequency signal and the output time of the low frequency signal is the signal turn-off period. The controller 12 in the control unit 11 is preferably an MCU, and the power switch 2a and the intensity selection switch 2b of the operation unit 2 are of a dual-purpose design. The power switch 2a (i.e. the strength selection switch 2b) is connected to the connector 219, then connected to the connector 320, and then divided into two paths, one path is connected to the pin P3.2/INT0 of the MCU, and then connected to the pin D of the USB connector 15 via the resistor R26, and the other path is directly grounded.

As shown in fig. 2 and fig. 3, the intensity indication unit 4 includes three intensity indication lamps, each of which is denoted as an LED1, an LED2 and an LED3, one end of the LED1, one end of the LED2 and one end of the LED3 are connected to the MCU through a resistor, that is, the intensity indication lamp LED1 is connected to the pin P2.5 of the MCU through a resistor R18, the intensity indication lamp LED2 is connected to the pin P2.4 of the MCU through a resistor R19, the intensity indication lamp LED3 is connected to the pin/P2.3 of the MCU through a resistor R24, and the other ends of the three LED lamps are grounded. The MCU controls the intensity of the intensity representation unit 4 to represent the turning on and off of the lamp according to the intensity steps during the asymmetrical complex current flowing out. When the intensity level is 1, the LED1 is in a connected state, and the intensity indicating lamp 1 of the intensity indicating unit 4 is turned on; when the intensity level is 2, the LED2 is in a connected state, and the intensity indicating lamp 2 of the intensity indicating unit 4 is turned on; when the intensity position is 3, the LED3 is in the connected state, and the intensity indicating lamp 3 is turned on by the intensity indicating unit 4.

The intensity in this embodiment is provided with three shift positions L, M, and H, and as shown in fig. 1, the intensity indicating unit 4 is provided with three intensity indicating lamps. The intensity indicating lamp is composed of an intensity indicating lamp L4 a, an intensity indicating lamp M4 b, and an intensity indicating lamp H4 c. Namely, the LED1, the LED2 and the LED3 described in fig. 3 correspond to the intensity-indicating lamp L4 a, the intensity-indicating lamp M4 b and the intensity-indicating lamp H4 c in fig. 1, respectively.

As shown in fig. 1, 2, and 3, the control unit 11 includes a controller (MCU)12, a waveform adjustment unit 13, and a charge management unit 14 provided on a circuit board. The rechargeable battery 10 is connected with the connector 116 and then divided into two paths, one path is grounded, the other path is connected with the VCC pin of the MCU and then connected with the BAT pin of the charging management chip U2, and then connected with the USB connector 15 through the VCC pin of the charging management chip U2 and then connected with the power plug 7 through a USB connection 6. The MCU includes a CPU, a memory device, and an input/output device, processes the related information according to the information recorded in the memory device in advance, and performs input and output. The user presses the power switch 2a of the operation unit 2 to turn on the beauty device, and the user further presses the intensity selection switch 2b to select the intensity position. The MCU executes the operation command input through the operation unit 2, and generates a PWM signal 1 and a PWM signal 2 according to a frequency and a duty ratio set in advance in the memory device. And executes the intensity selection command inputted through the operation unit 2 to generate the PWM signal H with adjustable duty ratio and amplitude according to the voltage, duty ratio and high level time set in advance according to the different intensity steps.

In the present invention, the waveform adjusting 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 stimulus applying unit 8 via the H-bridge control circuit unit 18. As shown in fig. 3, 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 ratio and high level time, generates a voltage signal, and synthesizes and generates an asymmetric composite waveform output current according to the low frequency, the intermediate frequency and the high frequency signals of the preset frequency. And adjusting the low frequency signal, the intermediate frequency signal and the high frequency signal according to the determined amplitude and pulse width to control the intensity of stimulation. The voltage control loop unit 17 is connected with the rechargeable battery 10 through an inductor L1, and is connected with the VCC pin of the MCU in parallel, and then is divided into two paths, wherein one path is connected with the collector of a triode Q9, the base of the triode Q9 is connected with the P3.7/INT3/CCP2 pin of the MCU through a resistor R17, the emitter of the triode Q9 is grounded, and the other path is connected with 2 capacitors C5 and C10 respectively through a diode D3 and then is connected with the output voltage EMS-VCC.

The voltage control loop unit 17 is connected to a voltage input terminal EMS-VCC of the H-bridge control loop unit 18, and is connected to the electrode of the stimulus applying unit 8 via the H-bridge control loop unit 18. The H-bridge control circuit unit 18 is provided with 6 transistors, which are respectively denoted as Q3, Q4, Q5, Q6, Q7 and Q8, wherein Q3 and Q7 are PNP transistors, and Q4, Q5, Q6 and Q8 are NPN transistors. The collectors of NPN transistors Q4 and Q6 are coupled in parallel to the voltage input of H-bridge control loop 18. The emitters of NPN triodes Q4 and Q6 are connected with the emitters of PNP triodes Q3 and Q7, and the parallel resistors R20 and R23 are respectively connected with an electrode group EMS-A (electrode 1) and an electrode group EMS-B (electrode 2). The base electrodes of the PNP type triodes Q3 and Q7 are respectively connected with the resistor R13 and the resistor R16, and the collector electrodes of Q3 and Q7 are respectively grounded. Collectors of NPN triodes Q5 and Q8 are respectively connected to a voltage input terminal EMS-VCC of the H-bridge control loop 18 through resistors R12 and R15, emitters are respectively grounded, a base of Q5 is connected to a pin P3.5/CCP0_2 of the MCU through a resistor R11, and receives a PWM signal 1, and a base of Q8 is connected to a pin CCP1/ADC0/P1.0 of the MCU through a resistor R14, and receives a PWM signal 2. The PWM signal 1 is a low frequency signal, and the PWM signal 2 is an intermediate frequency signal. Transistors Q4 and Q3 form the left arm of the H-bridge, controlled by Q5, and transistors Q6 and Q7 form the right arm of the H-bridge, controlled by Q8. The H-bridge control circuit unit 18 controls the on/off of the frequency signal and the outflow direction of the signal to be output to the stimulus applying unit 8 according to a preset time, and simultaneously controls the intermediate frequency and high frequency signal output periods to temporarily turn off the signal according to a preset time a, and synthesizes low frequency and intermediate frequency signals to form an asymmetric composite waveform, and finally generates an asymmetric composite wave current to be output to the stimulus applying unit 8.

The H-bridge control circuit unit 18 turns on the transistor Q5 and turns off the transistor Q8 according to the signal received by the MCU and the voltage control circuit unit 17, at which time the transistors Q3 and Q6 are turned on and the transistors Q4 and Q7 are turned off, and 2 electrode groups of the stimulus applying unit 8 output A low frequency signal from the electrode group EMS-A (electrode 1 in the form of A cosmetic roller) to the electrode group EMS-B (electrode 2 in the form of A cosmetic roller). Further, the transistor Q8 is turned on, the transistor Q5 is turned off, the transistors Q4 and Q7 are turned on, the transistors Q3 and Q6 are turned off, and the intermediate frequency signal is output 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) among the 2 electrode groups of the stimulus applying unit 8. When the preset time is reached, the output of the intermediate frequency signal is turned off by turning off the transistor Q8, thereby generating a signal turn-off period. Further, the transistor Q5 is turned on again, the transistor Q8 is turned off, the transistors Q3 and Q6 are turned on, the transistors Q4 and Q7 are turned off, and A low-frequency signal is output from the electrode group EMS-A to the electrode group EMS-B, and the above-mentioned cycle is repeated, so that the electrodes of the electrode group flow asymmetric complex wave current to the body surface of the user.

The MCU controls the intensity of the intensity indicating unit 4 to turn on and off the lamp according to the stimulus intensity during the above-mentioned current flowing.

In this embodiment, when the intensity is in the L range, the voltage is 20.2V, the high level time of the low-frequency signal is LFHTL1, and the duty ratio is LFDRL 1; when the strength is M gear, the voltage is 22V, the high level time of the low-frequency signal is LFHTM1, and the duty ratio is LFDRM 1; when the intensity is in the H gear, the voltage is 23.3V, the high level time of the low-frequency signal is LFHTH1, and the duty ratio is LFDRH 1. The duty cycle of the intermediate frequency can be set to be equal for each gear at MHFDR1 for T1 output time.

Fig. 4 is a waveform diagram of the asymmetric complex of example 1. The horizontal axis represents time and the vertical axis represents voltage. The negative half shaft of the Y axis is the output low-frequency signal, and the positive half shaft of the Y axis is the output intermediate-frequency signal. The low frequency has a frequency of 100Hz and the intermediate frequency has a frequency of 2500 Hz. The positive half axis of the Y axis has an off period of the intermediate frequency signal, and the time sum of the off periods of the intermediate frequency signal is P1% of the output time of the low frequency signal in the anti-direction.

The charging management unit 14 comprises a charging management chip U2 connected with the rechargeable battery 10 and the USB connector 15 for controlling the charging of the rechargeable battery 10 of the beauty device of the present invention, and the charging management unit 14 is connected with the MCU and the charging indication unit 3 through the MCU for controlling the on and off of the charging indication lamp.

The charge management chip U2 may be implemented as a Sola-IC SLM4054 chip, a PWChip Semi Technology PW4054 chip or a Hexin HX6001 chip. In this embodiment, the charging management chip U2 is a sol-IC SLM4054 chip, and the chip 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 through a resistor R1, the BAT pin is connected with the VCC pin of the MCU and then connected with the rechargeable battery 10 through a connector 116 to provide charging current for the rechargeable battery 10, a capacitor C3 is arranged between two poles of the rechargeable battery 10, the CHRG pin is connected with the P2.0 pin of the MCU, the MCU receives a charging state signal, when the battery is in a charging state, the connection of a charging indication lamp LED1 circuit is switched on, the charging indication lamp LED1 is lightened, when the battery is fully charged, the connection of the charging indication lamp LED1 circuit is cut off, the charging indication lamp LED1 is extinguished, the BAT pin and the CHRG pin are connected to two ends of a resistor R2, the VCC pin is divided into two paths, one path is connected with the V + pin of the USB connector, and the other path is grounded through a capacitor C1. The charge indicator LED1 may be optionally shared with the intensity indicator or may be provided separately.

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

Example 2

As shown in fig. 5, the cosmetic device according to embodiment 2 of the present invention has substantially the same structure as that of embodiment 1, except that: the stimulation applying unit 8 is constituted by 4 electrodes (electrode 18 a, electrode 28 b, electrode 38 c, and electrode 48 d), and supplies an asymmetric complex current composed of a low frequency, a medium frequency, and a high frequency to the body surface of the user. As shown in FIG. 3, the electrodes 18A and 28B of the 4 electrodes form an electrode group, which is an electrode group EMS-A, and the electrodes 38 c and 48 d form an electrode group, which is an electrode group EMS-B. The frequency of the low frequency signal is 128Hz, the frequency of the intermediate frequency signal is 1786Hz, and the frequency of the high frequency signal is 12000 Hz.

Unlike the embodiment 1 in which the low frequency signal is output first and then the intermediate frequency signal is output in the direction opposite to the direction of the low frequency signal between the two electrode groups, the embodiment outputs the low frequency signal first and then the intermediate frequency signal and the high frequency signal are output sequentially in the direction opposite to the direction of the low frequency signal between the two electrode groups.

When the transistor Q5 is turned on and the transistor Q8 is turned off, the low frequency signal is output from the electrode group EMS-A (electrodes 1 and 2) to the electrode group EMS-B (electrodes 3 and 4) among the 2 electrode groups of the stimulus applying unit 8, as in example 1. When the transistor Q8 is turned on and the transistor Q5 is turned off, the intermediate frequency signal and the high frequency signal are outputted from the electrode group EMS-B (electrodes 3 and 4) to the electrode group EMS-A (electrodes 1 and 2) among the 2 electrode groups of the stimulus applying unit 8, unlike in embodiment 1. When the predetermined time is reached, the output of the intermediate frequency and high frequency signals is turned off by turning off the transistor Q8, thereby generating a signal off period. Further, the transistor Q5 is turned on again, the transistor Q8 is turned off, the transistors Q3 and Q6 are turned on, the transistors Q4 and Q7 are turned off, and A low-frequency signal is outputted from the electrode group EMS-A to the electrode group EMS-B, and the above-mentioned cycle is repeated, so that the electrodes of the electrode group emit asymmetric complex wave current to the body surface of the user.

Next, an embodiment in which 2 kinds of signals of an intermediate frequency and A high frequency are output from the electrode group EMS-B to the electrode group EMS-A will be described. When the PWM signal 2 is set to the intermediate frequency and high frequency signals 2, the transistor Q8 is turned on, the transistors Q4 and Q7 are turned on, the transistors Q6 and Q3 are turned off, the MCU generates the intermediate frequency PWM signal 2 according to A preset time, frequency and duty ratio, the voltage control circuit unit 17 adjusts the duty ratio according to the PWM signal 2 received from the MCU to generate A voltage for the intermediate frequency, and the intermediate frequency signal is output from the electrode group EMS-B to the electrode group EMS-A viA the H-bridge circuit unit 18. When the preset time is reached, the transistor Q8 is turned off once according to the preset time, and a signal turn-off period is formed. Then, the transistor Q8 is turned on again after the preset time is reached, the MCU generates the high frequency PWM signal 2 according to the preset time, frequency and duty ratio, the voltage control circuit unit 17 adjusts the duty ratio according to the PWM signal 2 received from the MCU to generate the voltage for the high frequency, and the high frequency signal is output from the electrode group EMS-B to the electrode group EMS-A viA the H-bridge control circuit unit 18. After the preset time is reached, the transistor Q8 is turned off, and a signal turn-off period is formed.

In the cosmetic device of the present 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 ratio is LFDRL 2; when the intensity is M, the voltage is 11.4V, the high level time of the low-frequency signal is LFHTM2, and the duty ratio is LFDRM 2; when the intensity is H, the voltage is 12.6V, the time of the high level of the low-frequency signal is lfhthh 2, and the duty ratio is LFDRH 2. The duty cycles of the medium and high frequencies can be set to be equal for each intensity step, which is MHFDR2, and the output time is T2.

Fig. 6 is a schematic diagram of an asymmetric composite waveform in embodiment 2 of the present invention. The horizontal axis represents time and the vertical axis represents voltage. The negative half shaft of the Y axis is an output low-frequency signal, and the positive half shaft of the Y axis is an output intermediate-frequency signal and a high-frequency signal. The low frequency is 128Hz, the intermediate frequency is 1786Hz, and the high frequency is 12000 Hz. The positive half axis of the Y axis has off periods 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 anti-opposite direction.

The low frequency signals of the above embodiments 1 and 2 are set in the negative half axis of the Y axis, and the intermediate frequency and high frequency signals are set in the positive half axis of the Y axis, but the direction of the output of the low frequency signals and the direction of the output of the intermediate frequency and high frequency signals are not limited to the direction of the Y axis. Next, the frequencies of the low frequency signal, the intermediate frequency signal, and the high frequency signal set in the embodiment of the present invention are only one of the embodiments, and the frequencies may be set as needed within the ranges of the low frequency of 1 to 1000Hz, the intermediate frequency of 1000 to 10000Hz, and the high frequency of 10000Hz or more, and the frequencies are not limited to the values of the above embodiments. The voltage, the high level time, and the duty ratio set by the cosmetic device according to the embodiments 1 and 2 of the present invention are only a part of the embodiments of the present invention, and are not limited to the values described in the embodiments, and may be set according to actual needs. In addition, in embodiment 1 of the present invention, the percentage of the off time in the output time of the low-frequency current output in the reverse direction in embodiment 2 is not limited.

The present invention is described in detail and completely by the technical solutions in the above embodiments, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. It is obvious to those skilled in the art that various alternatives, modifications, and variations can be made based on the above description, and the present invention includes the various alternatives, modifications, and variations without departing from the spirit of the invention.

Claims

1. A beauty device comprises a body and a stimulation giving unit, wherein an operation unit, a strength indicating unit, a charging indicating unit, a rechargeable battery, a control unit and a plurality of connectors are arranged in the body, and the operation unit, the strength indicating unit, the charging indicating unit, the rechargeable battery, the control unit and the connectors are connected on a circuit board; the stimulation applying unit is composed of more than 2 electrodes, and is characterized in that:

2. The cosmetic apparatus according to claim 1, wherein a sum of output times of the intermediate frequency signal and the high frequency signal is shorter than an output time of the low frequency signal, and a difference between the sum of the output times 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 cosmetic device according to claim 1, wherein the intensity indicating unit is constituted by the same number of intensity indicating lamps as the intensity level classification, and the charge indicating unit is constituted by 1 or more charge indicating lamps.

4. The cosmetic device according to claim 1, wherein the control unit includes a controller, a waveform adjusting unit, and a charging management unit;

the controller and the waveform adjusting unit are used for generating asymmetric complex wave current;

the controller comprises a central processing device, a memory device and an input-output device, receives the action command input by the operation unit and respectively generates a PWM signal 1 and a PWM signal 2 according to the preset frequency and duty ratio in the memory device; generating a PWM signal H with adjustable duty ratio and amplitude according to the intensity selection instruction received from the operation unit and the voltage, duty ratio and high level time which are set according to different intensities in advance;

a voltage control loop unit and an H-bridge control loop unit are arranged in the waveform adjusting unit;

the voltage control loop unit receives a PWM signal H generated by the controller according to preset voltage, duty ratio and high level time, generates a voltage signal, controls the intensity of current stimulation of the stimulation giving unit according to the amplitude and pulse width of a low-frequency signal corresponding to the intensity selection command selected by the operation unit and the amplitude and pulse width of an intermediate-frequency signal and a high-frequency signal, and respectively forms a low-frequency signal, an intermediate-frequency signal and a high-frequency signal according to different intensities and preset frequencies;

the voltage control loop unit is connected with the electrode of the stimulation giving unit through an H-bridge control loop unit;

the H-bridge control loop unit comprises a plurality of triodes, the conducting or cutting-off state of each triode is controlled by the controller, the H-bridge control loop unit receives an instruction of the controller to execute the switching-off, switching-on and flowing-out direction conversion of low-frequency, intermediate-frequency and high-frequency signals output between the electrode groups of the stimulation endowing unit according to preset time, and cuts off the signals according to preset signal cutting-off time A in the output process of the intermediate-frequency signals and the high-frequency signals to form a stimulation resting period; the H-bridge control loop respectively outputs a low-frequency signal or one or two of an intermediate-frequency signal and a high-frequency signal according to the connection or disconnection of each triode, outputs the low-frequency signal when receiving a PWM signal 1, outputs one or two of the intermediate-frequency signal and the high-frequency signal when receiving a PWM signal 2, and switches off the signals according to the connection or disconnection state of each triode in the output of the intermediate-frequency signal and the high-frequency signal according to a preset signal switching-off time A to form a resting period of stimulation, on the basis of which an asymmetric composite waveform is formed, and finally generates an asymmetric composite wave current which is output to a stimulation giving unit;

the charging management unit comprises a charging management chip U2 connected with the rechargeable battery and the USB connector for controlling the charging of the rechargeable battery.

5. The cosmetic device according to claim 4, wherein the controller and the waveform adjusting unit control to adjust the amplitudes and pulse widths of the low frequency signal, the intermediate frequency signal, and the high frequency signal.

6. The cosmetic device according to claim 1, wherein 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 triangular wave, and a sine wave; the frequency ranges of the low-frequency signal, the intermediate-frequency signal and the high-frequency signal are respectively below 1000Hz, above 1000-10000Hz and above 10000 Hz.

7. Cosmetic device according to claim 1, characterized in that the signal-off time a ranges from 0ms < a <1000 ms.