KR20220057043A - Beauty device for providing medium frequency and micro current and controlling method thereof - Google Patents

Abstract

The present invention relates to a medium frequency microcurrent beauty device. According to one aspect of the present invention, provided is the medium frequency microcurrent beauty device comprising: a main body enabling a user to grip; and a contact part enabling a microcurrent to be applied by being in contact with the skin of the user, wherein the contact part can apply a frequency in a range of 4-8 KHz to the skin when the contact part and the skin are in contact. Therefore, the present invention is capable of having an effect of relieving pain or discomfort.

Description

Medium frequency micro-current beauty device and its control method {Beauty device for providing medium frequency and micro current and controlling method thereof}

The present invention relates to a medium-frequency micro-current beauty device and a method for controlling the same.

Recently, people's interest in beauty is increasing, and interest in cosmetic devices that can improve the skin condition using microcurrent as well as cosmetics is increasing.

Microcurrent refers to a minute current of less than 1,000 microamperes (μA), and about 40 to 60 μA of microcurrent flows through the human body. It is known that the microcurrent flowing through the human body plays a role in maintaining health by transmitting information between the cerebrum and organs and enhancing the natural healing power by activating metabolism and blood circulation.

When a current similar to the micro-current flowing through the human body flows through the skin, the amount of ATP, the basic energy source for physical activity, is increased up to 5 times, and the permeability of the cell membrane is improved by 40%, thereby promoting the discharge of waste products. In addition, it is possible to supply cellular level electrical energy capable of creating a cell membrane potential difference by microcurrent, which has a wound healing effect.

However, the conventional beauty device that applies a microcurrent is not effective in overcoming skin resistance because the stimulation time is long by using a frequency (low frequency) of 1,000 Hz or less, and it has a disadvantage in that it excessively stimulates sensory nerves and causes electrical pain. .

In addition, the skin resistance varies depending on the user's skin condition (whether it is dry skin or moisture-containing skin), and even if the same microcurrent is applied to the user, the effect of the microcurrent and the user The pain you feel may be different.

However, the conventional beauty device for applying a microcurrent applies a microcurrent without considering the user's skin condition (skin resistance), so it cannot apply an optimal microcurrent to the user, and there is a disadvantage in that the user feels pain. .

Patent Literature: Korean Publication No. 10-2019-0017270 (published on February 20, 2019)

Embodiments of the present invention have been proposed to solve the above problems, and an object of the present invention is to provide a medium-frequency micro-current cosmetic device capable of eliminating pain or discomfort when a micro-current is applied to the skin, and a method for controlling the same.

In addition, it is an object of the present invention to provide a user-customized medium-frequency microcurrent beauty device capable of changing the microcurrent applied to the skin according to the user's skin condition (skin resistance) and a method for controlling the same.

According to an embodiment of the present invention, the user can grip the main body; It includes a contact part capable of applying a microcurrent in contact with the user's skin, and when the contact part and the skin are in contact, the contact part can apply a frequency in the range of 4KHz to 8KHz to the skin. Provides a mid-frequency microcurrent beauty device can do.

In addition, the medium-frequency micro-current beauty device, a skin resistance measurement circuit that can measure the user's skin resistance; And 　 It is possible to provide a medium frequency microcurrent beauty device further comprising a control unit capable of adjusting the microcurrent applied to the skin according to the skin resistance measured in the skin resistance measurement circuit.

In addition, the control unit controls the contact unit to operate in one mode among a plurality of modes, and at least one mode among the plurality of modes is controlled from the contact unit as the skin resistance measured in the skin resistance measurement circuit increases. It is possible to provide a medium-frequency micro-current cosmetic device comprising a control so that the micro-current applied to the skin is lowered.

In addition, the medium-frequency micro-current beauty device further includes a light emitting unit capable of emitting light, and the light emitting unit is provided with a plurality of LEDs capable of displaying different colors from the inside of the main body, and the main body is from the LED. It is possible to provide a medium-frequency micro-current beauty device made of a material that can transmit light that emits light.

In addition, the control unit controls the contact unit to operate in one mode among a plurality of modes, and the plurality of modes include: a first mode in which the contact unit can apply a constant microcurrent in a first range to the skin; a second mode in which the contact portion can apply a constant microcurrent in a second range larger than the first range to the skin; And 　 It is possible to provide a medium-frequency micro-current beauty device including a third mode in which the contact unit can apply a micro-current that varies according to skin resistance to the skin.

In addition, the control unit, when operating in the first mode and the second mode, controls so that the skin resistance is not measured through the skin resistance measuring circuit, and when operating in the third mode, through the skin resistance measuring circuit It is possible to provide a medium frequency microcurrent cosmetic device that controls the skin resistance to be measured.

In addition, the first range of the microcurrent operating in the first mode is 65㎂ to 75A, and the second range of the microcurrent operating in the second mode is a mid-frequency microcurrent beauty device of 90　 to 110A can provide

In addition, the control unit, when the contact unit operates in the third mode, as the skin resistance measured in the skin resistance measurement circuit increases from 10KΩ to 100KΩ, the microcurrent applied to the skin from the contact portion is lowered from 149.1　 to 100.3。 It is possible to provide a medium-frequency micro-current beauty device that can be controlled to lose weight.

In addition, the main body, coupled to each other a pair of cases capable of fixing the contact portion; And surrounding at least a portion of the pair of cases, it is possible to provide a medium-frequency micro-current beauty device comprising an outer cover provided with an elastic material.

In addition, the outer cover, it is possible to provide a medium-frequency micro-current beauty device provided with silicon through which the light irradiated from the light emitting unit can be transmitted.

In addition, the outer cover may include a first insertion hole through which the contact part may pass; And It is possible to provide a medium-frequency micro-current beauty device provided with a second insertion hole into which the decoration can be inserted.

In addition, the medium-frequency micro-current beauty device, disposed on one side of the main body, can provide a medium-frequency micro-current beauty device further comprising a vibrating unit that provides a massage function by 　 vibration.

In addition, the skin resistance measurement circuit includes a first circuit unit including a first resistor (R1) disposed in parallel with the contact portion that can be connected to the skin resistance; and a second circuit part including a second resistor R2 connected to the first circuit part, and a third resistor R3 and a fourth resistor R4 disposed in parallel with the second resistor R2. It is possible to provide a micro-current beauty device.

In addition, the first circuit unit includes an output unit to which an output voltage (V _s ) of the skin resistance measurement circuit is applied between the first resistor (R1) and the contact part, and the second circuit unit includes the third resistor (R3) ) and the fourth resistor (R4) between the input voltage (V _in ) of the skin resistance measurement circuit can be provided a medium-frequency micro-current beauty device including an input unit is applied.

In addition, the formula for measuring the skin resistance (Rskin) by the skin resistance measurement circuit is

It is possible to provide a medium-frequency micro-current beauty device that follows.

According to another embodiment of the present invention, the step of turning on the power of the medium-frequency micro-current beauty device; selecting one of a plurality of modes representing the operation of the contact; It is possible to provide a method of controlling a medium-frequency micro-current beauty device comprising the step of applying a micro-current according to the mode selected by the contact and a frequency in the range of 4KHz to 8KHz to the skin.

In addition, in the step of selecting one mode from among a plurality of modes indicating the operation of the contact unit, the button is pressed for a preset time or longer, so that the mode state displayed on the light emitting unit is changed, and the button is pressed for less than a preset time As such, it is possible to provide a method of controlling a medium-frequency micro-current beauty device comprising the step of selecting a mode displayed on the light emitting unit.

In addition, the step of applying a microcurrent and a frequency in the range of 4KHz to 8KHz to the skin according to the mode selected by the contact part is, when the first mode is selected, a frequency in the range of 4KHz to 8KHz by the contact part and a constant microscopicity in the first range A current is applied to the skin, and when the second mode is selected, a frequency in the range of 4KHz to 8KHz and a constant microcurrent in the second range is applied to the skin by the contact part, and when the third mode is selected, 4KHz by the contact part It is possible to provide a method for controlling a medium-frequency micro-current cosmetic device comprising applying a micro-current that varies according to a frequency in the range of 8 KHz and skin resistance to the skin.

The medium-frequency micro-current beauty device and the control method thereof according to the embodiments of the present invention have an effect of eliminating pain or discomfort when the micro-current is applied to the skin.

In addition, by changing the microcurrent applied to the skin according to the user's skin condition (skin resistance), there is an advantage that an optimal microcurrent can be applied to the user.

1 is a view schematically showing the front of the medium frequency micro-current beauty device according to an embodiment of the present invention.
Figure 2 is a view schematically showing the side of the medium-frequency micro-current beauty device of Figure 1.
FIG. 3 is a view schematically showing the rear surface of the medium frequency microcurrent beauty device of FIG. 1 .
4 is a diagram schematically showing an exploded perspective view of the medium frequency microcurrent beauty device of FIG. 1 .
5 is a view illustrating various operating states of the light emitting unit of the medium frequency microcurrent beauty device of FIG. 1 .
6 is a diagram schematically showing a block diagram for each configuration of the medium frequency microcurrent beauty device of FIG. 1 .
7 is a diagram schematically showing a circuit configuration of a skin resistance measurement circuit.
8 is a graph illustrating a relationship between a range of frequencies applied to the skin and skin resistance.
9 is a flowchart schematically illustrating a control method of the medium-frequency micro-current beauty device of FIG. 1 .

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a view schematically showing the front of the medium-frequency micro-current beauty device 1 according to an embodiment of the present invention, and FIG. 2 is a view schematically showing the side of the medium-frequency micro-current beauty device 1 of FIG. , FIG. 3 is a view schematically showing the rear surface of the medium frequency microcurrent beauty device 1 of FIG. 1, and FIG. 4 is a diagram schematically showing an exploded perspective view of the medium frequency microcurrent beauty device 1 of FIG. 1, FIG. is a view exemplarily showing various operating states of the light emitting unit 500 of the medium frequency microcurrent beauty device 1 of FIG. 1, and FIG. 6 is a block diagram for the configuration of the medium frequency microcurrent beauty device 1 of FIG. is a diagram schematically showing

1 to 6, the medium frequency microcurrent beauty device 1 according to an embodiment of the present invention includes a body 100 that a user can hold; and a contact unit 200 capable of applying a microcurrent in contact with the user's skin. In this case, when the contact unit 200 and the skin are in contact, the contact unit 200 may apply a frequency in the range of 4KHz to 8KHz to the skin. Preferably, the contact unit 200 may apply a 5KHz frequency to the skin.

The medium frequency microcurrent beauty device 1 of this embodiment applies a frequency (preferably a 5KHz frequency) in the range of 4KHz to 8KHz to the skin, so that the resistance of the skin can be lowered, and accordingly, the conventional low frequency ( It can reduce the user's pain or discomfort compared to a beauty device that applies a frequency of 1000 Hz or less). A detailed description thereof will be given later. In this embodiment, a frequency in the range of 4KHz to 8KHz may be understood as a medium frequency.

In addition, the medium frequency microcurrent beauty device 1 according to an embodiment of the present invention includes a skin resistance measuring circuit 310 that can measure the user's skin resistance; and a control unit 300 capable of adjusting the microcurrent according to the skin resistance measured by the skin resistance measurement circuit 310 .

In the present embodiment, by including such a configuration, a high current may be applied to the skin when the measured skin resistance value is low, and a low current may be applied to the skin when the measured skin resistance is high. A more detailed description of this will be given later.

The appearance of the medium frequency microcurrent beauty device 1 may be formed in a rabbit face shape as a whole. Specifically, the body 100 may correspond to a rabbit's round face shape, and the contact unit 200 may correspond to a rabbit's ear shape. In this way, by forming the medium-frequency micro-current beauty device 1 in the shape of a rabbit face, it is possible to improve the aesthetics of the user. However, these shapes are merely exemplary, and the present invention may include those formed in other shapes.

In addition, the upper side of the medium-frequency micro-current beauty device (1) is provided with two contact parts 200, so that the medium-frequency and micro-current can be applied to the user at the same time, and it operates in a third mode to be described later through the contact part 200 skin resistance can be measured. In addition, a vibrating unit 800 is disposed on the rear surface of the medium frequency microcurrent beauty device 1 to provide a massage function through vibration of the vibrating unit 800 together with the operation of the contact unit 200 .

The body 100 may be provided in a cylindrical shape in which two holes into which the contact part 200 can be inserted are formed.

Specifically, the body 100 includes a pair of cases 120 coupled to each other to fix the contact unit 200; and an outer cover 110 that surrounds at least a portion of the pair of cases 120 and is provided with an elastic material.

The pair of cases 120 may be coupled to each other to form two holes, and the contact unit 200 may be fixed to the two holes. In addition, a substrate P, a battery 600 , a vibrating unit 800 , and the like, which will be described later, may be accommodated in the pair of cases 120 .

Specifically, the pair of case 120 includes a front case 120A and a rear case 120B, and the front case 120A and the rear case 120B are coupled to each other to fix the contact portion 200 described above. can

Also, a hole into which the contact part 200 can be inserted may be provided in the pair of cases 120 . In this embodiment, two contact parts 200 are provided as an example, and two holes provided in a pair of cases 120 are provided as an example.

Specifically, the two first insertion parts 122a provided as a part of the hole are provided in the front case 120A, which is a part of the pair of cases 120, and the rear case 120B, which is the other part of the pair of cases 120. There may be provided two second insertion portions 122b provided as the remaining part of the hole. That is, the first insertion part 122a and the second insertion part 122b may be coupled to form two holes into which the contact part 200 may be inserted.

In addition, the two holes to which the first insertion part 122a and the second insertion part 122b are coupled are formed in the same size and shape as the two first insertion holes 112 formed in the outer cover 110 to be described later. can be

In addition, the front case 120A is provided with a first protrusion 121a coupled to the contact unit 200 to fix one side of the contact unit 200 , and the rear case 120B has a first protrusion 121a and A second protrusion 121b disposed on the opposite surface to fix the other side of the contact part 200 may be provided. That is, the first protrusion 121a and the second protrusion 121b may serve to fix the contact part 200 .

In addition, on the front surface of the front case 120A, a button through hole 126 through which a button 700 to be described later can pass through, and a plurality of LED through holes 128 through which a plurality of LEDs provided to the light emitting unit 500 can pass through. ) can be provided.

In this embodiment, it will be described with an example that two LEDs are provided. In this case, the LED may be disposed with the button through hole 126 interposed therebetween. That is, it can be understood that the two LEDs are displayed on both cheeks when the medium frequency microcurrent beauty device 1 in the shape of a rabbit face is viewed from the outside (see FIG. 5 ).

The outer cover 110 may surround at least a portion of the pair of cases 120 . In this embodiment, the outer cover 110 will be described as an example to surround the side of the front case (120A) and the rear case (120B).

The outer cover 110 may be provided with a material that has elasticity and transmits light irradiated from the light emitting unit 500 to be described later. For example, the outer cover 110 may be made of silicon.

Since the outer cover 110 is provided with an elastic material, the user can press the button 700 disposed inside the outer cover 110 by pressing the outer cover 110 .

In addition, since the outer cover 110 is provided with a material through which the light irradiated from the light emitting unit 500 is transmitted, the light emitted from the LED of the light emitting unit 500 passes through the outer cover 110 , so that the user can use the medium frequency microcurrent beauty treatment. It is possible to grasp the operating state of the device (1). A detailed description thereof will be given later.

A first insertion hole 112 through which the contact part 200 may pass may be provided in the outer cover 110 . In this embodiment, two contact portions 200 are provided, and two first insertion holes 112 may be provided.

In addition, the outer cover 110 may be provided with a second insertion hole 114 into which the decorative part 900 can be inserted.

Specifically, the second insertion hole 114 may include an eye-shaped insertion hole 114a into which the eye-shaped decoration 902 of the decorative part 900 can be inserted; and a nose-shaped insertion hole 114b into which the nose-shaped decoration 904 of the decoration part 900 can be inserted.

The above-described first insertion hole 112 may be provided on the side surface of the outer cover 110 , and the second insertion hole 114 may be provided on the front surface of the outer cover 110 .

The contact unit 200 is provided in plurality, and can measure the user's skin resistance by contacting the user's skin (eg, during operation of the third mode to be described later), and can apply a microcurrent to the user's skin. .

The range of the microcurrent applied to the skin from the contact unit 200 varies according to a plurality of modes to be described later, and the overall range of the microcurrent applied to the skin from the contact unit 200 may be 50 μA to 180 μA. Preferably, the range of the microcurrent applied to the skin from the contact unit 200 may be 100 μA to 150 μA. The specific range of the microcurrent according to the plurality of modes will be described later.

In this embodiment, the contact unit 200 will be described as an example in which two are provided. When measuring the user's skin resistance, the two contact parts 200 may serve as electrodes in contact with the skin.

The contact part 200 may be provided in a hemispherical shape, and a material thereof may be provided as a metal. For example, after the contact portion 200 is formed of brass, the outside may be plated with nickel.

A substrate P is provided inside the body 100, and the substrate P has a light emitting unit 500, a control unit 300, a skin resistance measurement circuit 310, a battery management module M, an LDO (to be described later) ( L) may be attached.

The light emitting unit 500 may be provided with a plurality of LEDs. In this embodiment, the light emitting unit 500 will be described as an example of two LEDs mounted on the substrate (P).

The light emitting unit 500 is provided inside the main body 100 , and light emitted from the light emitting unit 500 may pass through the main body 100 .

The light emitting unit 500 may indicate the operating state or a plurality of mode states of the medium-frequency microcurrent beauty device 1 according to whether the LED is lighted and the light emission color.

For example, when the mid-frequency micro-current beauty device 1 does not work, the light emitting unit 500 may not emit light (see Fig. 5 (a)), and the mid-frequency micro-current beauty device 1 is When indicating the first mode, the LED disposed on one side of the plurality of LEDs may be turned on to indicate red (refer to (b) of FIG. 5), and when indicating the second mode, the LED disposed on the other side of the plurality of LEDs may be turned on to indicate red (refer to (c) of FIG. 5), and when indicating the third mode, all of the plurality of LEDs may be turned on to indicate red (refer to ((d) of FIG. 5)) .

In addition, when the medium-frequency microcurrent beauty device 1 is being charged, the LED disposed on one side of the plurality of LEDs may be turned on to display an orange color (refer to FIG. 5 (e)), and upon completion of charging, a plurality of LEDs The LED disposed on the other side of the middle may be turned on to indicate white (refer to (f) of FIG. 5). However, the number and color of the LEDs are merely exemplary, and the spirit of the present invention may include providing two or more LEDs and different colors.

The battery 600 may be provided inside the main body 100 and may supply power for the medium frequency microcurrent beauty device 1 to operate.

The button 700 is provided inside the outer cover 110 , and may be inserted into the button penetration hole 126 of the front case 120A. Specifically, the button 700 may be covered with the outer cover 110 and disposed in the button penetration hole 126 of the front case 120A, and may be connected to a power connector disposed on the substrate P.

When the user presses the button 700, the operating state of the medium-frequency micro-current beauty device 1 may change.

The vibrator 800 may notify the operating state of the medium frequency microcurrent beauty device 1 or provide a massage function.

The vibrator 800 may be provided on one side of the main body 100 . Specifically, the vibrator 800 may be provided on the rear side of the rear case 120B. Such a vibrator 800 may provide a massage function by directly contacting the user's skin and vibrating. For example, the vibrating unit 800 may be provided as a vibrating motor such as a coin motor.

Also, an LDO(L) may be provided between the battery 600 and the controller 300 . Here, the LDO(L) may be understood as a linear regulator that operates even with a low input/output potential difference.

In addition, a battery management module M may be selectively provided between the battery 600 and the LDO (L). The battery management module M may be connected to a charging connector, and charging and discharging of the battery 600 may be controlled by the battery management module M.

The decorative part 900 includes an eye-shaped insertion hole 114a and a nose-shaped insertion hole 114b as described above, and may be inserted into the outer cover 110 . By providing such a decorative part 900, the user can increase the aesthetic sense.

In addition, when the user presses the nose-shaped insertion hole 114b of the decorative part 900 , the button 700 disposed inside the outer cover 110 may be pressed.

The controller 300 may control the operation of the above-described medium-frequency micro-current beauty device 1 . For example, the control unit 300 may be provided as a microcontrol unit (MCU).

The control unit 300 may control the contact unit 200 to apply a frequency in the mid-frequency range to the skin, and may adjust the microcurrent according to the skin resistance measured in the skin resistance measurement circuit 310 to be described later.

Also, the controller 300 may control the contact unit 200 to operate in one mode among a plurality of modes.

For example, the plurality of modes include a first mode in which the contact unit 200 can apply a constant microcurrent in a first range to the skin; a second mode in which the contact unit 200 can apply a constant microcurrent in a second range larger than the first range to the skin; and a third mode in which the contact unit 200 applies a microcurrent that varies according to skin resistance to the skin.

Here, the range of microcurrent operating in the first mode (first range) may be 65 μA to 75 μA, and the range of microcurrent operating in the second mode (second mode) may be 90 μA to 110 μA there is. For example, when operating in the first mode, a microcurrent of 65 μA may be applied to the skin from the contact unit 200, and when operating in the second mode, a microcurrent of 100 μA from the contact unit 200 may be applied to the skin. there is.

In addition, when the control unit 300 operates in the first mode and the second mode, the skin resistance measurement circuit 310 can control so that the skin resistance is not measured, and when the third mode is operated, the skin resistance is measured. It is possible to control the skin resistance to be measured through the circuit 310 . In this case, a constant current may be applied to the skin when operating in the first mode and the second mode, and a variable current may be applied to the skin when operating in the third mode.

Also, when the contact unit 200 operates in the first mode, the controller 300 may apply a constant microcurrent in the first range to the user's skin.

Also, when the contact unit 200 operates in the second mode, the controller 300 may apply a constant microcurrent in the second range to the user's skin.

In addition, when the contact unit 200 operates in the third mode, the control unit 300 controls the microcurrent applied to the skin from the contact unit 200 to decrease as the skin resistance measured by the skin resistance measurement circuit 310 increases. can do.

Specifically, as the skin resistance measured in the skin resistance measurement circuit 310 increases from 10KΩ to 100KΩ, the microcurrent applied to the skin from the contact unit 200 may be lowered from 149.1 μA to 100.3 μA.

For example, when the skin resistance measured by the skin resistance measurement circuit 310 is 10KΩ, the microcurrent applied to the skin from the contact unit 200 is 149.1 μA, and the skin resistance measured by the skin resistance measurement circuit 310 is In the case of 20KΩ, the microcurrent applied to the skin from the contact unit 200 is 142mA, and when the skin resistance measured by the skin resistance measurement circuit 310 is 40KΩ, the microcurrent applied to the skin from the contact unit 200 is 129.8 and when the skin resistance measured by the skin resistance measurement circuit 310 is 60KΩ, the microcurrent applied to the skin from the contact unit 200 is 115.6㎂, and the skin resistance measured by the skin resistance measurement circuit 310 is 80KΩ In the case of , the microcurrent applied to the skin from the contact unit 200 is 107.5 μA, and when the skin resistance measured by the skin resistance measurement circuit 310 is 100 KΩ, the micro current applied to the skin from the contact unit 200 is 100.3 μA can be However, this is an example, and the present invention may include other numerical ranges in which the microcurrent applied to the skin from the contact unit 200 decreases as the skin resistance increases.

As such, when the contact unit 200 operates in the third mode, as the skin resistance increases, the amount of microcurrent applied to the skin is reduced to lower the resistance of the skin, thereby reducing the electrical pain felt by the user. The user can improve the feeling of use (can reduce pain or discomfort) when using the medium frequency microcurrent beauty device 1 .

The above-described first mode may be expressed as a weak mode, the second mode may be expressed as a strong mode, and the third mode may be expressed as an automatic setting mode.

When the control unit 300 is provided as a microcontrol unit (MCU), the skin resistance measurement circuit 310 may be built in the microcontrol unit (MCU).

The skin resistance measuring circuit 310 may be printed on the substrate P or provided in a microcontroller unit (MCU), and may be connected to the contact unit 200 to measure the user's skin resistance.

7 is a diagram schematically showing the circuit configuration of the skin resistance measuring circuit 310 .

Referring to FIG. 7 , the skin resistance measuring circuit 310 includes a first circuit part 312 including a first resistor R1 disposed in parallel with the contact part 200 that can be connected to the skin resistance (user's skin); and a second circuit part 314 including a second resistor R2 connected to the first circuit part 312 , and a third resistor R3 and a fourth resistor R4 disposed in parallel with the second resistor R2 . may include Here, the third resistor R3 and the fourth resistor R4 may be connected in series.

Also, the first circuit unit 312 may include an output unit 313 to which the output voltage V _s of the skin resistance measurement circuit is applied between the first resistor R1 and the contact unit 200 .

Also, the second circuit unit 314 may include an input unit 311 to which the input voltage V _in of the skin resistance measurement circuit is applied between the third resistor R3 and the fourth resistor R4 . Here, the input voltage (V _in ) of the skin resistance measurement circuit may be understood as a voltage input to the control unit 300 . As such, the skin resistance measurement circuit 310 may be understood as a constant voltage circuit.

The skin resistance measurement circuit 310 can measure the user's skin resistance, and when operating in the third mode based on the measured skin resistance, a variable current can be applied to the user's skin through the contact unit 200 . .

Specifically, the process of measuring skin resistance by the above-described skin resistance measurement circuit 310 will be described as follows.

를 제3 저항(R3)과 제4 저항(R4)으로 분배한 것으로, 다음과 같은 식(1)로 표현될 수 있다.The input voltage (V _in ) of the second circuit unit 314 is a voltage

is divided into the third resistor R3 and the fourth resistor R4, and can be expressed by the following Equation (1).

Equation (1):

는 Rx 저항과 제2 저항(R2)으로 분배한 것으로 다음과 같은 식(2)로 표현될 수 있다.Also, voltage

is divided by the Rx resistor and the second resistor R2, and can be expressed by the following Equation (2).

Equation (2):

In addition, the resistance Rx is divided into the first resistance R1 and the skin resistance R _skin , and can be expressed by the following Equation (3).

Equation (3):

Combining the above-mentioned formulas (1), (2), and (3), the skin resistance (R _skin ) can be obtained by the following formula.

The first resistor R1 may be provided as 10KΩ, the second resistor R2 as 8.2KΩ, the third resistor R3 as 1MΩ, and the fourth resistor R4 as 36KΩ.

According to the formula for measuring skin resistance (Rskin), assuming that the input voltage (Vin) of the skin resistance measuring circuit is 0.5V and the output voltage (V _s ) of the skin resistance measuring circuit is 30V, the skin resistance is 81491Ω. can be measured.

In addition, when the skin resistance Rskin is measured, the applied voltage V applied to the skin from the contact unit 200 may follow the following relational expression.

Applied voltage (V) = 0.4 X skin resistance (Rskin) + battery voltage

That is, when the skin resistance (Rskin) value is measured, the applied voltage (V) applied to the skin from the contact unit 200 is determined, and the current applied to the skin from the contact unit 200 is determined, the skin resistance (Rskin) The current applied to the skin from the contact unit 200 may change according to the value of .

Hereinafter, the advantages of applying a frequency ranging from 4KHz to 8KHz (preferably 5KHz) to the skin will be reviewed in more detail.

The present applicant has discovered that there is a certain relationship between the frequency range applied to the skin and the skin resistance, and from this, the mid-frequency microcurrent cosmetic device (1) that can reduce pain or discomfort was conceived.

8 is a graph illustrating a frequency applied to the skin and a change in skin resistance.

Referring to the frequency-skin resistance change graph of FIG. 8 , it can be seen that the skin resistance decreases as the frequency increases. That is, the lower the frequency, the higher the resistance of the skin, and the higher the frequency, the lower the resistance of the skin, so that the deep penetration effect of the current increases.

Due to the difference in the deep penetration effect for each frequency, the skin penetration range is different (low frequency can penetrate to the subcutaneous fat of the skin, medium frequency can penetrate to the muscles of the skin), and the short phase period of the medium frequency does not cause pain in the pain nerves well. It is possible to show the effect of excellent deep electrical stimulation without

In addition, by selecting the above-mentioned 4KHz to 8KHz among a wide range of frequencies (medium frequency close to low frequency), it is possible to increase the skin stimulation effect such as increase of metabolism in the dermal layer and removal of wastes.

9 is a flowchart schematically illustrating a control method of the medium frequency microcurrent beauty device 1 of FIG. 1 .

The control method of the medium-frequency micro-current beauty device (1) includes the steps of turning on the power of the medium-frequency micro-current beauty device (1) (S1); a step of selecting one of a plurality of modes representing the operation of the contact unit 200 (S2); It may include a step (S3) of applying a microcurrent according to the mode selected by the contact unit 200 and a frequency in the range of 4KHz to 8KHz to the skin.

First, the step (S1) of turning on the power of the medium-frequency micro-current beauty device (1) will be described in detail as follows.

By pressing the nose-shaped decoration 904 part exposed to the outside of the body 100, the button 700 can be pressed, and as the button 700 is pressed, the power of the medium-frequency microcurrent beauty device 1 can be turned on there is. At this time, it may be set to turn on the power of the medium frequency microcurrent beauty device 1 only when the button 700 is pressed for 1 second or more.

In addition, it can be checked whether the low voltage (eg, 3.7V) by the LDO (L) after the power of the medium frequency microcurrent beauty device (1) is turned on.

In addition, when the power of the medium-frequency micro-current beauty device 1 is turned on, the state of the medium-frequency micro-current beauty device 1 may be displayed by the light emitting unit 500 . For example, when the medium frequency microcurrent beauty device 1 is turned on, the first mode is indicated when the LED disposed on one side of the plurality of LEDs of the light emitting unit 500 is turned on to indicate red, at this time the button 700 When is pressed for more than a preset time (for example, 1 second), the light emitting unit 500 may change to display the second mode or the third mode, and when the button 700 is pressed for less than a preset time, it enters the first mode The contact unit 200 may operate.

Next, the step S2 of selecting one mode from among a plurality of modes representing the operation of the contact unit 200 will be described in detail as follows.

After the power of the medium frequency microcurrent beauty device 1 is turned on, the button 700 is pressed for more than a preset time (eg, 1 second), the mode state displayed on the light emitting unit 500 changes, and the button By pressing 700 for less than a preset time, the method may include selecting a mode displayed on the light emitting unit 500 .

For example, when the medium frequency microcurrent beauty device 1 is turned on, the light emitting unit 500 indicates the first mode when the LED disposed on one side of the plurality of LEDs of the light emitting unit 500 is turned on to indicate red. can

Thereafter, by pressing the button 700 for a preset time or longer, the LED disposed on the other side of the plurality of LEDs of the light emitting unit 500 may be changed to display red. In this case, it may be understood that the light emitting unit 500 has changed to the second mode.

After that, by pressing the button 700 for more than a preset time, the user may change all of the plurality of LEDs of the light emitting unit 500 to display red. In this case, it may be understood that the light emitting unit 500 is changed to the third mode.

Also, as the button 700 is pressed for less than a preset time, a mode displayed on the light emitting unit 500 may be selected. For example, when all of the plurality of LEDs of the light emitting unit 500 are displayed in red, by pressing the button 700 for less than a preset time, the third mode is selected, and the third mode is selected by the contact unit 200 . can be executed.

Next, the step (S3) in which a microcurrent according to the mode selected by the contact unit 200 and a frequency in the range of 5KHz to 8KHz is applied to the skin will be described in detail as follows.

In the above-described step S2, when one of the plurality of modes is selected (for example, when one of the first to third modes is selected), the 4KHz to 8KHz range by the contact unit 200 is At the same time as the frequency is applied to the skin, a microcurrent according to the selected mode may be applied to the skin.

For example, when the first mode is selected, a frequency in the range of 4KHz to 8KHz and a constant microcurrent in the first range are applied to the skin by the contact unit 200, and when the second mode is selected, the contact unit 200 By applying a constant microcurrent in the range of 4KHz to 8KHz and the second range to the skin, and when the third mode is selected, the frequency in the range of 4KHz to 8KHz by the contact unit 200 and the microcurrent varying according to skin resistance An electric current can be applied to the skin.

In addition, when the first to third modes are operated, vibration may be simultaneously applied to the user's skin by the vibrating unit 800 together with the microcurrent.

After that, after the first mode to the third mode operates for a certain time (eg, 10 minutes) or more, the power of the medium frequency microcurrent beauty device 1 may be controlled to be automatically turned off.

Above, the control method of the medium-frequency micro-current beauty device (1) and the medium-frequency micro-current beauty device (1) according to an embodiment of the present invention has been described as a specific embodiment, but this is only an example and the present invention is not limited thereto, It should be construed as having the widest scope according to the basic idea disclosed herein. A person skilled in the art may practice unspecified embodiments by combining and substituting the disclosed embodiments, but this also does not depart from the scope of the present invention. In addition, those skilled in the art can easily change or modify the disclosed embodiments based on the present specification, and it is clear that such changes or modifications also fall within the scope of the present invention.

1: Medium frequency micro-current beauty device 100: Main body
110: outer cover 120: a pair of cases
120A: front case 120B: rear case
200: contact part 300: control unit
310: skin resistance measuring circuit 500: light emitting part
600: battery 700: button
800: vibration unit 900: decoration unit

Claims (18)

a user-gripable body;
Including a contact part that can apply a microcurrent in contact with the user's skin,
When the contact portion and the skin are in contact, the contact portion is a medium frequency microcurrent beauty device capable of applying a frequency in the range of 4KHz to 8KHz to the skin. According to claim 1,
The medium-frequency micro-current beauty device,
a skin resistance measuring circuit capable of measuring the user's skin resistance; and
Medium frequency microcurrent beauty device further comprising a control unit capable of adjusting the microcurrent applied to the skin according to the skin resistance measured in the skin resistance measurement circuit. 3. The method of claim 2,
The control unit is
controlling the contact unit to operate in one mode among a plurality of modes;
At least one mode among the plurality of modes,
Medium frequency microcurrent beauty device comprising controlling the microcurrent applied to the skin from the contact portion to decrease as the skin resistance measured in the skin resistance measurement circuit increases. According to claim 1,
The medium-frequency micro-current beauty device,
Further comprising a light emitting unit capable of emitting light,
The light emitting unit is provided with a plurality of LEDs capable of displaying different colors on the inside of the main body,
The body is a medium-frequency micro-current beauty device provided with a material that can transmit the light emitted from the LED. 3. The method of claim 2,
The control unit is
controlling the contact unit to operate in one mode among a plurality of modes;
The plurality of modes,
a first mode in which the contact unit can apply a constant microcurrent in a first range to the skin;
a second mode in which the contact part can apply a constant microcurrent in a second range larger than the first range to the skin; and
Medium frequency microcurrent beauty device including a third mode in which the contact part can apply a microcurrent that varies according to skin resistance to the skin. 6. The method of claim 5,
The control unit is
When operating in the first mode and the second mode, control so that the skin resistance is not measured through the skin resistance measurement circuit,
When operating in the third mode, a medium-frequency microcurrent beauty device that controls the skin resistance to be measured through the skin resistance measurement circuit. 6. The method of claim 5,
The first range of microcurrent operating in the first mode is 65 μA to 75 μA,
The second range of the microcurrent operating in the second mode is a medium frequency microcurrent beauty device of 90㎂ to 110㎂. 6. The method of claim 5,
The control unit is
When the contact part operates in the third mode, as the skin resistance measured in the skin resistance measurement circuit increases from 10KΩ to 100KΩ, the microcurrent applied to the skin from the contact part decreases from 149.1㎂ to 100.3㎂. Micro-current beauty device. According to claim 1,
The body is
a pair of cases coupled to each other to fix the contact part; and
Surrounding at least a portion of the pair of cases, medium frequency microcurrent beauty device comprising an outer cover provided with an elastic material. 10. The method of claim 9,
the outer cover,
A medium-frequency micro-current beauty device made of silicon that can transmit light irradiated from the light emitting part. 10. The method of claim 9,
the outer cover,
a first insertion hole through which the contact part can pass; and
A medium frequency microcurrent beauty device provided with a second insertion hole into which the decorative part can be inserted. According to claim 1,
The medium-frequency micro-current beauty device,
Medium frequency microcurrent beauty device disposed on one side of the main body, further comprising a vibrating unit that provides a massage function by vibration. 3. The method of claim 2,
The skin resistance measurement circuit may include: a first circuit unit including a first resistor (R1) disposed in parallel with a contact part that can be connected to the skin resistance; and
Mid-frequency fine including a second circuit part including a second resistor (R2) connected to the first circuit part, a third resistor (R3) and a fourth resistor (R4) arranged in parallel with the second resistor (R2) Current beauty device. 14. The method of claim 13,
The first circuit unit,
and an output unit to which an output voltage (V _s ) of the skin resistance measurement circuit is applied between the first resistor (R1) and the contact unit,
The second circuit unit,
A medium frequency microcurrent beauty device including an input unit to which the input voltage (V _in ) of the skin resistance measurement circuit is applied between the third resistor (R3) and the fourth resistor (R4). 15. The method of claim 14,
The formula for measuring the skin resistance (Rskin) by the skin resistance measurement circuit is

Medium-frequency micro-current beauty device that follows. Turning on the power of the medium-frequency micro-current beauty device;
selecting one of a plurality of modes representing the operation of the contact;
A method of controlling a medium-frequency micro-current beauty device comprising the step of applying a micro-current according to the mode selected by the contact and a frequency in the range of 4KHz to 8KHz to the skin. 17. The method of claim 16,
The step of selecting one mode from among a plurality of modes representing the operation of the contact part,
When the button is pressed for more than a preset time, the mode state displayed on the light emitting unit is changed,
By pressing the button for less than a preset time, the control method of the medium frequency microcurrent beauty device comprising the step of selecting the mode displayed on the light emitting unit. 17. The method of claim 16,
The step of applying a microcurrent and a frequency in the range of 4KHz to 8KHz to the skin according to the mode selected by the contact part,
When the first mode is selected, a frequency in the range of 4KHz to 8KHz and a constant microcurrent in the first range are applied to the skin by the contact,
When the second mode is selected, a frequency in the range of 4KHz to 8KHz and a constant microcurrent in the second range are applied to the skin by the contact,
When the third mode is selected, a method of controlling a medium frequency microcurrent beauty device comprising applying a microcurrent variable according to a frequency in the range of 4KHz to 8KHz and skin resistance to the skin by the contact part.

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