KR20220129937A - Device for washing face - Google Patents

Abstract

The present invention relates to a face-washing device comprising: a head unit including a face-washing brush, and at least one electrode that receives a driving signal and generates an electric field corresponding to the driving signal; a body unit that can be coupled to and separated from the head unit; and a signal supply unit that is provided in the body unit, generates the drive signal by mixing an AC signal and a DC signal, and supplies the drive signal to the electrode. According to the present invention, it is possible to provide a face-washing device capable of effectively removing wastes from skin pores during face-washing.

Description

Face-washing device {DEVICE FOR WASHING FACE}

The present invention relates to a face-washing device utilizing a bio-friendly microcurrent special electromagnetic wave.

Various efforts are being made to maintain clean and elastic skin, and the interest in skin care of the face is the greatest among various body parts. Accordingly, people are taking care of their skin by receiving a massage, using functional cosmetic products that make their skin beautiful, or by using various cleaning products to keep their skin clean.

Among them, the importance of washing to remove waste products from the skin is gradually increasing.

However, if you use your hands to wash your face, the cleaning products may not be delivered evenly to the skin, bacterial infection may occur through your hands, and you may not be able to effectively remove foreign substances such as waterproof cosmetics or sunscreen.

Accordingly, recently, a method of indirectly applying a cleaning product to the skin using various face-washing tools has been used.

When using such a face-washing device, it has the advantage of being able to effectively remove skin wastes compared to washing with hands, but there is a limit to completely removing wastes in the pores with only cleaning products and brushes. There is a risk of damaging the skin surface.

SUMMARY OF THE INVENTION It is an object of the present invention devised to solve the above-described problems to provide a face-washing device capable of effectively removing wastes in pores by providing an electric field.

Another object of the present invention is to provide a face-washing device that amplifies the skin care effect by utilizing a driving signal generated by mixing an AC signal and a DC signal.

A face-washing apparatus according to an embodiment of the present invention includes: a head unit including a face-washing brush and at least one electrode receiving a driving signal and generating an electric field corresponding to the driving signal; a body part connected to the head part and formed in a shape that can be gripped by a user; and a signal supply unit provided in the body unit, generating the driving signal by mixing an AC signal and a DC signal, and supplying the driving signal to the electrode; may include.

In addition, the control unit for controlling the signal supply unit so that at least one of the characteristics of the driving signal can be changed in response to the user's control; may further include.

Also, the characteristics of the driving signal may include amplitude and DC offset.

Also, the value of the DC offset may be set to be greater than or equal to the value of the amplitude.

In addition, the signal supply unit, a DC-DC converter that receives the battery voltage and converts it into an output voltage; a signal generator generating the AC signal by using the output voltage of the DC-DC converter; a filter for performing a filtering operation on the AC signal generated by the signal generator; and a calibration unit generating the driving signal by mixing the DC signal with the AC signal supplied through the filter. may include.

The signal supply unit may include: a voltage divider configured to divide an output voltage of the DC-DC converter to generate the DC signal; may further include.

In addition, the head unit, the face-washing brush and the electrode disposed on one surface of the face-washing unit; and a head body having one end extending from the face-washing unit and having a distal end coupled to the body unit; may include.

In addition, at least one protrusion may be formed at the distal end of the head body.

In addition, the body portion includes a receiving groove in which the distal end of the head body is accommodated, and at least one insertion groove corresponding to the projection is formed in the receiving groove, and as the projection is fitted into the insertion groove, The head part and the body part may be coupled.

In addition, the battery disposed inside the body portion; It further includes, and the body part may include a switch for controlling the power supply by the battery and controlling the characteristics of the driving signal.

In addition, the body portion may include: an inner case including a battery accommodating portion in which the battery is located; and a first circuit board seated on the inner case and on which the signal supply unit is mounted. may include

The body portion may include a second circuit board mounted on the inner case and on which a charging circuit for charging the battery is mounted; may further include.

According to the present invention, it is possible to provide a face-washing device capable of effectively removing wastes in pores by providing an electric field.

According to the present invention, it is possible to provide a face-washing device that amplifies the skin care effect by using a driving signal generated by mixing an AC signal and a DC signal.

1A is a view showing a face-washing device according to an embodiment of the present invention, and FIGS. 1B and 1C are views for explaining the biofilm removal effect of a driving signal generated by mixing an AC signal and a DC signal.
2 is a diagram illustrating a signal supply unit according to an embodiment of the present invention.
3A to 3C are diagrams illustrating signal waveforms according to an embodiment of the present invention.
4 is a view showing an electric field generating device for eyewash according to another embodiment of the present invention.
5 is a view showing a face-washing device according to an embodiment of the present invention in a specific form.
6 is a view showing a face wash according to an embodiment of the present invention.
7 is a view illustrating a state in which the head part and the body part of the face-washing apparatus shown in FIG. 5 are separated from each other.
8 is a view showing a body according to an embodiment of the present invention.
9 is an exploded view showing the internal configuration of the head part.
FIG. 10A is a view showing a cross-section of the head cover shown in FIG. 9 .
FIG. 10B is a diagram illustrating a coupling relationship between the electrode, the first connection terminal, and the head cover illustrated in FIG. 9 .
11 is an exploded view showing the internal configuration of the body part.
FIG. 12 is a diagram illustrating a coupling relationship between a switch, a connection terminal, a connection line, an inner case, a circuit board, and a battery illustrated in FIG. 11 .

Hereinafter, embodiments related to the present invention are illustrated in the drawings and will be described in detail through detailed description. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and should be understood to include all changes, equivalents and substitutes included in the spirit and scope of the present invention. .

In describing the components of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. In addition, in this specification, when it is described that a component is "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to the other component, but each component It should be understood that another element may be “connected”, “coupled” or “connected” between elements. In the case of "connected", "coupled" or "connected", it is understood to be physically "connected", "coupled" or "connected" as well as electrically "connected", "coupled" or "connected" as needed. can be

Terms such as "~ unit (unit)", "~ group", "~ child", "~ module", etc. described in this specification mean a unit that processes at least one function or operation, which is hardware, software, or hardware and a combination of software. In addition, terms such as "comprises", "comprises" or "have" described in the present specification, unless otherwise stated, mean that the corresponding component may be embedded, so other components are excluded. Rather, it should be construed as being able to include other components further.

In addition, it is intended to clarify that the classification of the constituent parts in the present specification is merely a classification for each main function that each constituent unit is responsible for. That is, two or more components to be described below may be combined into one component, or one component may be divided into two or more for each more subdivided function. In addition, each of the constituent units to be described below may additionally perform some or all of the functions of other constituent units in addition to the main function it is responsible for. Of course, it can also be performed by being dedicated to it.

Hereinafter, a face-washing device according to an embodiment of the present invention will be described with reference to the drawings related to the embodiments of the present invention.

1A is a view showing a face-washing device according to an embodiment of the present invention, and FIGS. 1B and 1C are diagrams for explaining the biofilm removal effect of a driving signal generated by mixing an AC signal and a DC signal.

Referring to FIG. 1A , a face-washing device 1 according to an embodiment of the present invention may include an electric field generating device for face-washing 2 , a head unit 10 , a body unit 20 , and a battery 30 . .

The device for generating an electric field for eyewash (2) includes at least one electrode 11 for generating an electric field in response to the driving signal Vd, and a signal supply unit 40 for supplying the driving signal Vd to the electrode 11. may include

The electrode 11 may be disposed on the head part 10 , and may be electrically connected to the signal supply part 40 disposed on the body part 20 to receive the driving signal Vd.

The electrode 11 may form an electric field based on the electric energy of the driving signal Vd, and this electric field may effectively remove wastes from the skin, particularly wastes in pores.

A plurality of electrodes 11 may be disposed on the head unit 10 , and at least one electrode 11 among them may receive a driving signal Vd. In this case, an electrode serving as a ground electrode may be additionally installed in the head unit 10 .

A separate groove or hole is formed in the head portion 10 , the electrode 11 may be inserted into the groove or hole, and a portion of the electrode 11 may be exposed from the head portion 10 . In this case, the electrode 11 may have a shape that does not protrude to the outside of the head part 10 or may have a shape that protrudes.

The body part 20 is connected to the head part 10 and may have a shape that can be gripped by a user. A separate button or switch (not shown) for operating the face-washing device 1 may be disposed on the body portion 20 .

The signal supply unit 40 is located inside the body unit 20 , and may generate a driving signal Vd using the battery voltage Vb supplied from the battery 30 .

In particular, the signal supply unit 40 generates a driving signal Vd by mixing an alternating current (AC) signal and a direct current (DC) signal.

Accordingly, the driving signal Vd includes both an AC component and a DC component, and a synergistic effect and resonance may occur due to simultaneous application of the AC component and the DC component, thereby increasing the removal effect of pore contamination.

Hereinafter, a biofilm removal effect of a driving signal generated by mixing an AC signal and a DC signal will be described in detail with reference to FIGS. 1B and 1C .

A typical pore contaminant is a biofilm caused by bacteria. Referring to FIG. 1b , the electric field caused by the DC component of the driving signal Vd induces an imbalance in the distribution of the local charge amount to increase the structural stress of the biofilm. and the electric field by the AC component of the driving signal Vd may increase the permeability of the external protective body through specific vibration generation.

The synergistic effect of the AC component and the DC component can be confirmed in FIG. 1C .

That is, compared to the biofilm removal effect when the electric field by the AC component and the electric field by the DC voltage are provided individually, the removal of the biofilm when the electric field by the AC component and the electric field by the DC voltage are provided at the same time It can be seen that the effect is significantly superior.

Since the electric field by the DC component and the electric field by the AC component can be simultaneously provided from the electrode 11 according to the driving signal Vd supplied by the signal supply unit 40 according to the embodiment of the present invention, waste products in the skin (bio film) can achieve an amplified removal effect.

In addition, as described above, since the driving signal Vd is set in a form in which the AC voltage and the DC voltage are superimposed, the risk of electric shock and pain that may be caused to the body can be reduced compared to the case where only the DC voltage is applied. .

Meanwhile, the battery 30 may be accommodated in the body 20 , and may provide the battery voltage Vb to the signal supply unit 40 .

For example, the battery 30 may be set as a primary battery or a secondary battery.

When the battery 30 is a primary battery, a user may periodically replace the battery 30 , and when the battery 30 is a secondary battery, charging may be performed through various charging methods.

For example, the battery 30 may be charged through a wireless charging method or a wired charging method in a state located in the body unit 20 , and may be separated from the body unit 20 and charged through a separate charging device. .

2 is a diagram illustrating a signal supply unit according to an embodiment of the present invention, and FIGS. 3A to 3C are diagrams illustrating a signal waveform according to an embodiment of the present invention. In particular, the filtered AC signal Sac' is shown in FIG. 3A, the DC signal Sdc is shown in FIG. 3B, and the filtered AC signal Sac' and the DC signal Sdc are mixed and generated in FIG. 3C. A driving signal Vd is shown.

Referring to FIG. 2 , the signal supply unit 40 according to the embodiment of the present invention may include a DC-DC converter 41 , a signal generator 42 , a filter 43 , and a calibration unit 44 . , may further include a voltage divider 45 in addition.

The DC-DC converter 41 may receive the battery voltage Vb from the battery 30 , convert the battery voltage Vb into an output voltage Vo of a predetermined level, and output it.

The signal generator 42 operates based on the voltage supplied from the DC-DC converter 41 , and uses the output voltage Vo of the DC-DC converter 41 to generate an AC signal Sac having a predetermined frequency. can create

The signal generator 42 may be implemented using a known configuration capable of generating an AC signal, such as an oscillator, a function generator, or the like.

For example, the AC signal Sac may be set to a frequency of 1 KHz to 1000 MHz. When the AC signal (Sac) is set to a low frequency of less than 1KHz, the removal effect of pore contaminants (biofilm) is reduced. because it is less effective. Meanwhile, the frequency of the AC signal Sac may be set to a frequency of 5 MHz to 15 MHz suitable for removal of pore contaminants (biofilm).

Also, the amplitude of the AC signal Sac may be set to 0.1mv to 3V. When the amplitude of the AC signal (Sac) is less than 0.1mV, it is difficult to expect the effect of removing pore contaminants (biofilm). because there is a risk of it happening.

The filter 43 may perform a filtering operation on the AC signal Sac generated by the signal generator 42 . As an example, the filter 43 includes a low pass filter to convert an AC signal (Sac) in the form of a sawtooth wave into an AC signal (Sac') in the form of a sine wave. have. However, the type of the filter 43 is not limited thereto, and various types of filters may be employed according to the design structure.

The calibrator 44 may generate the driving signal Vd by mixing the DC signal Sdc with the AC signal Sac' supplied through the filter 43 . For example, the calibrator 44 may be implemented as an operational amplifier capable of summing (or overlapping) the AC signal Sac′ and the DC signal Sdc, but is not limited thereto.

Accordingly, an offset corresponding to the DC signal Sdc is generated in the AC signal Sac′, and a driving signal Vd possessed by both the AC component and the DC component may be generated.

Since the driving signal Vd includes all the characteristics of the AC signal Sac, the driving signal Vd can be set to a frequency of 1KHz to 1000MHz, and a frequency of 5MHz to 15MHz, which is more suitable for the removal of wastes in the pores can be set to Also, the amplitude of the driving signal Vd may be set to 0.1mv to 3V.

Referring to FIG. 3A , the calibration unit 440 may receive an AC signal Sac′ having an amplitude of A volt V from the filter 43, and the corresponding AC signal Sac′ is shown in FIG. 3B. A final driving signal Vd as shown in FIG. 3C may be generated by superposing the DC signal Sdc of B volt V as shown in FIG.

In this case, the voltage value of the DC signal Sdc may be set to be greater than or equal to the amplitude of the AC signal Sac'. Accordingly, the voltage value of the driving signal Vd may be set to 0 or more.

As a result, the DC offset value of the driving signal Vd may be set equal to or greater than the amplitude of the driving signal Vd.

When the DC offset value of the driving signal Vd is less than the amplitude value of the driving signal Vd, a period in which the voltage of the driving signal Vd has a negative value occurs, and in the period, the voltage becomes negative. As a result, a loss of electric air paper occurs.

However, as in the embodiment of the present invention, when the DC offset value of the driving signal Vd is set equal to or greater than the amplitude of the driving signal Vd, the voltage of the driving signal Vd is always '0' or more, so There is no loss of energy.

Meanwhile, the DC signal Sdc may be generated by the voltage divider 45 . For example, the voltage divider 45 may receive the output voltage Vo of the DC-DC converter 41 and perform voltage division on the output voltage Vo to generate the DC signal Sdc. can

The voltage divider 45 may be configured as a resistor string for dividing the output voltage Vo, but is not limited thereto.

When the output voltage Vo of the DC-DC converter 41 is suitable to be directly used to generate the driving signal Vd, the corresponding output voltage Vo may serve as the DC signal Sdc. In this case, the voltage divider 45 may be omitted, and the output voltage Vo of the DC-DC converter 41 may be input to the calibration unit 44 .

4 is a view showing an electric field generating device for eyewash according to another embodiment of the present invention.

Referring to FIG. 4 , in the device for generating an electric field for face washing 2 ′ according to another embodiment of the present invention, the signal supply unit 40 may change at least one of the characteristics of the driving signal Vd in response to the user's control. have. In addition, the device for generating an electric field for eyewash 2 ′ may additionally include a control unit 50 for controlling the signal supply unit 40 in response to a user input.

For example, the characteristics of the driving signal Vd may include an amplitude and a DC offset of the driving signal Vd.

That is, the user can set the optimal driving signal Vd suitable for him or her by adjusting at least one of the amplitude and DC offset of the driving signal Vd. Through this function, customized skin care considering individual characteristics becomes possible

In this case, the user's input method for controlling the characteristics of the driving signal Vd may be by a button or a switch installed in the face-washing electric field generating device 2' or the face-washing device 1, and the user may use the eye-washing electric field generating device 1 (2') or by operating a button or a switch installed in the face-washing device 1, the characteristic of the driving signal Vd can be adjusted or set.

When the setting information of the driving signal Vd is input through a button or switch operation by the user, the control unit 50 controls the driving signal Vd to have an amplitude value and a DC offset value corresponding to the input setting information. 40) can be controlled.

The controller 50 may change the amplitude of the AC signal Sac by controlling the signal generator 42 . Also, the controller 50 may control the voltage value of the DC signal Sdc by controlling the DC-DC converter 41 and/or the voltage divider 45 . Accordingly, the characteristics of the driving signal Vd may be finally changed.

In this case, the controller 50 may control the voltage divider 45 so that the voltage value of the DC signal Sdc is set to be equal to or greater than the amplitude of the AC signal Sac', and accordingly, the voltage value of the driving signal Vd. may be set to 0 or more.

5 is a view showing a face-washing device according to an embodiment of the present invention in a specific form, FIG. 6 is a view showing a face-washing unit according to an embodiment of the present invention, and FIG. 7 is a head part of the face-washing device shown in FIG. It is a view showing a state in which the body parts are separated from each other, and FIG. 8 is a view showing the body part according to an embodiment of the present invention.

5 to 8 , the face-washing device 1 according to the embodiment of the present invention may include a head 10 and a body 20 .

The head part 10 may be designed in a form that can be combined with and separated from the body part 20, and accordingly, when replacement of the head part 10 is required due to aging, etc., the user can replace the existing head part 10 with a new one. It can be easily replaced with the head part (10).

The head unit 10 may include a face-washing unit 110 including a face-washing brush 115 , and a head body 120 .

The face-washing unit 110 may perform a function of washing the skin or massaging the skin by being close to or in contact with the cleaning target, for example, the user's face.

A face-washing brush 115 and at least one or more electrodes may be disposed on one surface of the face-washing unit 110 , and as shown in FIG. 6 , the electrode includes a first electrode 11a and a second electrode 11b. can do.

The eyewash brush 115 may be formed of fine bristles, or may be formed of silicon. The eyewash brush 115 may be inserted and fixed into a plurality of tuft holes (not shown) formed on the surface of the eyewash unit 110 , or a plurality of eyewash brushes 115 may be integrally formed to form the face wash unit ( 110) may be fixed on one surface. The arrangement structure, number, size, etc. of the face-washing brush 115 are not particularly limited and may be changed in various forms.

The face-washing brush 115 may perform a function of washing the skin or massaging the skin by being in contact with the cleaning target.

The first electrode 11a and the second electrode 11b may be disposed on one surface of the face-washing unit 110 to be spaced apart from each other, and may be disposed on the same surface as the face-washing brush 115 . To this end, an opening through which a portion of the first electrode 11a and the second electrode 11b can be exposed from the face-washing unit 110 may be provided on one surface of the face-washing unit 110 .

The first electrode 11a and the second electrode 11b may form an electric field by the driving signal Vd supplied from the signal supply unit 40 . Such an electric field may allow waste products in the pores to be easily removed.

The head body 120 may form the body of the head unit 10 , and one end of the head body 120 extends from the eyewash unit 110 , and the distal end 121 may be coupled to the body unit 20 . have. To this end, at least one or more protrusions 123a and 123b may be formed on the distal end 121 of the head body 120 .

The protrusions 123a and 123b may be inserted into the insertion grooves 223a and 223b formed in the body 20 to correspond to the shapes of the protrusions 123a and 123b, and the protrusions 123a and 123b are inserted into the insertion grooves 223a. , 223b), the head portion 10 and the body portion 20 may be coupled as they are fitted.

Meanwhile, although it is illustrated that two protrusions 123a and 123b are formed on the distal end 121 , the present invention is not limited thereto, and the shape and number of the protrusions 123a and 123b may be variously changed.

The body part 20 may be designed in a shape that a user can hold when using the face-washing device 1 , and may be combined with the head part 10 .

A signal supply unit 40 and a battery 30 supplying a battery voltage Vb to the signal supply unit 40 may be provided inside the body unit 20 .

As shown in FIG. 8 , a receiving groove 260 may be formed on the upper side of the body 20 , and the distal end 121 of the body 20 may be accommodated in the receiving groove 260 .

In the receiving groove 260, at least one insertion groove (223a, 223b) corresponding to the projections (123a, 123b) formed in the distal end 121 may be formed, and the number of insertion grooves (223a, 223b) is the projection ( It may be the same as the number of 123a and 123b).

The body 20 may include a switch 210 , a charging port 270 , and a display unit 280 .

The switch 210 may be for controlling the power on/off of the face-washing device 1 and controlling characteristics (at least one of an amplitude value and a DC offset value) of the driving signal Vd. That is, the user of the face-washing device 1 may operate the switch 210 to turn on or off the power of the face-washing device 1 and set the amplitude or DC offset of the driving signal Vd to a desired value.

A terminal of a Universal Serial Bus (USB) cable for charging the battery 30 may be inserted into the charging port 270 , and may be designed to correspond to the structure of the terminal.

The display unit 280 includes at least one light emitting device, and the light emitting device may be, for example, a light emitting diode (LED).

The display unit 280 may display information indicating the state of the eyewash device 1 . Here, the information may be confirmed through whether the light emitting device emits light, through the color of light, or by displaying at least one of letters and numbers.

That is, the user may check whether the power of the face-washing device 1 is turned on or off through the display unit 280 . In addition, it is also possible to check whether the face-washing device 1 is in a charging state, or to check the characteristics of the currently set driving signal Vd.

9 is an exploded view showing the internal configuration of the head part, FIG. 10A is a cross-sectional view of the head cover shown in FIG. 9, and FIG. 10B is the coupling relationship between the electrode, the first connection terminal, and the head cover shown in FIG. is a diagram showing

9, 10A, and 10B, the head unit 10 includes a first electrode 11a, a second electrode 11b, a first connector 112a, a second connector 112b, and a second connector. It may include a first connection terminal 111a , a second connection terminal 111b , and a head cover 150 .

The first electrode 11a and the second electrode 11b may be disposed on the eyewash unit 110 .

The first electrode 11a and the second electrode 11b may be formed of a material such as brass, aluminum, conductive polymer, conductive silicon, or stainless steel. However, the present invention is not limited thereto, and any conductive material may be used as an electrode material.

The first electrode 11a and the second electrode 11b may be set as a positive electrode and a negative electrode, respectively, and the shape and number of the first electrode 11a and the second electrode 11b are shown in the drawings. It is not limited thereto and may be changed in various ways.

For example, in the drawings, the first electrode 11a and the second electrode 11b exposed to the surface of the face-washing unit 110 are shown to have a curved shape, but the first electrode 11a and the second electrode 11b) may have a bar or polygonal shape or a dot shape.

In addition, although it is illustrated that the first electrode 11a and the second electrode 11b are provided with one and two electrodes, only one electrode may be provided, and the first electrode 11a and/or the first electrode 11b may be provided. A plurality of second electrodes 11b may be provided.

In addition, although the drawing shows that the first electrode 11a and the second electrode 11b are disposed to face each other, at least one first electrode 11a is disposed in the central area of the surface of the face-washing unit 110 and , at least one second electrode 11b may be disposed to surround the first electrode 11a.

At least a portion of the first connector 112a and the second connector 112b may be disposed inside the head body 120, and the first connector 112a and the second connector 112b are each It may be connected to the first electrode 11a and the second electrode 11b. The first connecting body 112a and the second connecting body 112b are formed to extend from the first and second electrodes 11a and 11b toward the distal end 121 of the head body 120, and the first connecting terminal 111a ) and the second connection terminal 111b may be electrically connected.

For manufacturing convenience, the first connector 112a and the first electrode 11a may be integrally formed, and the second connector 112b and the second electrode 11b may also be integrally formed. Also, the first connector 112a and the second connector 112b may be formed of the same material as the electrode material described above.

The first connector 112a and the second connector 112b may have distal ends 114a and 114b that are partially bent or bent inward, and specifically, of the first connector 112a. The distal end 114a may be bent in a first direction, and the distal end 114b of the second connector 112b may be bent in a second direction opposite to the first direction to face each other.

Insertion holes 113a and 113b into which the first connection terminal 111a and the second connection terminal 111b are inserted may be formed in the distal ends 114a and 114b, and the first connection body 112a and the second connection terminal 111b are inserted thereinto. The distal ends 114a and 114b of the sieve 112b may be accommodated in the head cover 150 .

The first connection body 112a and the first connection terminal 111a may be fixed through soldering, etc., and the second connection body 112b and the second connection terminal 111b may also be fixed through soldering or the like. The first connection terminal 111a and the second connection terminal 111b are respectively connected to the first electrode 11a and the second electrode 11b through the first connection body 112a and the second connection body 112b, , the driving signal Vd and/or the ground voltage transmitted from the third connection terminal 211a and the fourth connection terminal 211b provided in the body portion 20 to the first electrode 11a and the second electrode 11b ) can be passed as

Here, the first connection terminal 111a and the second connection terminal 111b may be formed of a pogo pin, but the present invention is not limited thereto, and may be formed of a leaf spring or the like.

The head cover 150 may be coupled to the distal end 121 of the head body 120 to close the distal end 121 of the head body 120 . A part of the first connector 112a and the second connector 112b and a part of the first connector 111a and the second connector 111b are positioned inside the head cover 150, and the head cover ( A portion of the first connection terminal 111a and the second connection terminal 111b may be exposed on the lower surface of the 150 .

To this end, in the inside of the head cover 150, the first receiving area 151a in which the distal end 114a of the first connector 112a is accommodated, and the distal end 114b of the second connector 112b are accommodated. A second accommodation region 151b may be formed.

In addition, the inside of the head cover 150 includes a third accommodation area 152a connected to the first accommodation area 151a and accommodating a portion of the first connection terminal 111a, a second accommodation area 151b, and A fourth accommodating area 152b that is connected to and accommodates a portion of the second connection terminal 111b may be formed.

In this case, the width W1 of the first accommodating region 151a and the second accommodating region 151b may be greater than the width W2 of the third accommodating region 152a and the fourth accommodating region 152b. Accordingly, the distal end 114a of the first connector 112a in a bent state may be supported by a step portion existing between the first accommodating region 151a and the third accommodating region 152a, and in a bent state. The distal end 114b of the second connector 112b may be supported by a stepped portion existing between the second accommodating region 151b and the fourth accommodating region 152b.

When the head part 10 and the body part 20 are coupled to each other later, the first connection terminal 111a and the second connection terminal 111b are connected to the third connection terminal 211a and the second connection terminal 211a disposed on the body part 20 . 4 may be in contact with the connection terminal 211b.

The head cover 150 may be integrally formed with the head body 120, for example, the head cover 150 into which the electrodes 11a and 11b connected to each other and the connection terminals 111a and 111b are inserted into the head body ( 120), it may be formed through an insert injection molding method.

11 is an exploded view showing the internal configuration of the body part, and FIG. 12 is a view showing a coupling relationship between the switch, the connection terminal, the connection line, the inner case, the circuit board, and the battery shown in FIG. 11 .

11 and 12, the body portion 20 includes a switch 210, a third connection terminal 211a, a fourth connection terminal 211b, a first connection line 215a, a second connection line 215b, It may include an inner case 220 , a first circuit board 230 , a second circuit board 250 , and a battery 30 .

The inner case 220 is accommodated in the body 20 and provides an area and space for installing components such as the battery 30 , the first circuit board 230 , and the second circuit board 250 . can do.

A battery accommodating part in which the battery 30 can be accommodated is formed in the inner case 220 , the first circuit board 230 is mounted on one surface of the inner case 220 , and the second circuit board 230 is mounted on the other surface of the inner case 220 . The circuit board 250 may be seated thereon.

The battery 30 may be electrically connected to the first circuit board 230 to supply the battery voltage Vb to the first circuit board 230 . Also, the battery 30 may be electrically connected to the second circuit board 250 to receive a charging current. However, when the battery 30 is separated from the inner case 220 and charged through a separate charging device, the second circuit board 250 may be omitted.

The switch 210 controls power supply by the battery 30 and adjusts the characteristics of the driving signal Vd, and may be installed on the first circuit board 230 .

Although one switch 210 is illustrated in the drawing, it may include a switch for turning on or off the power of the face-washing device 1 and a switch for adjusting the characteristics of the driving signal Vd. .

A switch for adjusting the characteristics of the driving signal Vd may be provided so that a user can set each of an amplitude value and a dc offset value, or the switch may be provided to select any one of at least two or more modes have. For example, when the first mode is selected through the switch, it is determined as a preset amplitude value and a dc offset value corresponding to the first mode, and when the second mode is selected through the switch, the second mode is selected according to the second mode. It may be provided so that a set amplitude value and a dc offset value are determined.

The first circuit board 230 may be fixed to the inner case 220 through a fastening member (not shown), and the first circuit board 230 includes a signal supply unit 40 generating a driving signal Vd. may be mounted, and the control unit 50 may be further mounted.

The second circuit board 250 may be fixed to the inner case 220 through a fastening member (not shown), etc., and the second circuit board 250 is charged with the battery 30 through a current supplied from the outside. A charging circuit for this may be mounted.

On the other hand, the body 20 may be provided with a charging terminal 270 for supplying external power to the second circuit board 250 , and the charging terminal 270 is electrically connected to the second circuit board 250 . can

One end of the first connection line 215a is connected to the first circuit board 230 to receive the driving signal Vd, and the other end is connected to the third connection terminal 211a through the first connection terminal 111a. The driving signal Vd may be supplied to the first electrode 11a. In addition, one end of the second connection line 215b is connected to the first circuit board 230 to receive the driving signal Vd, and the other end is connected to the fourth connection terminal 211b to connect the second connection terminal 111b. The ground voltage may be supplied to the second electrode 11b through the

The third connection terminal 211a and the fourth connection terminal 211b are exposed from the receiving groove 260 of the body portion 20 and electrically contact the first connection terminal 111a and the second connection terminal 111b. can be connected

Meanwhile, a sealing member for sealing may be formed in the head portion 10 so that foreign substances such as water do not penetrate into the inside of the head portion 10 and the body portion 20 when the user uses the face-washing device 1 , , the sealing member may include silicon. In addition, the components of the head part 10 may be formed through insert injection.

Similarly, the body 20 may include an O-ring for sealing, and the components of the body 20 may be coupled through ultrasonic welding.

Those of ordinary skill in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential features thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims described below rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. should be interpreted

1: Face-washing device 2, 2': Eye-washing electric field generating device
10: head part 11: electrode
11a: first electrode 11b: second electrode
20: body 30: battery
40: signal supply unit 50: control unit
110: face wash 115: face brush
111a: first connection terminal 111b: second connection terminal
112a: first connector 112b: second connector
113a, 113b: insertion hole 121: distal end
123a, 123b: protrusion 120: head body
150: head cover 210: switch
211a: third connection terminal 211b: third connection terminal
215a: first connecting line 215b: second connecting line
220: inner case 230: first circuit board
223a, 223b: insertion groove 250: second circuit board
260: receiving groove 270: charging port
280: display unit

Claims (12)

a head unit including an eyewash brush and at least one electrode receiving a driving signal and generating an electric field corresponding to the driving signal;
a body part connected to the head part and formed in a shape that can be gripped by a user; and
a signal supply unit provided in the body unit, generating the driving signal by mixing an AC signal and a DC signal, and supplying the driving signal to the electrode; A face-wash device comprising a. According to claim 1,
a control unit controlling the signal supply unit so that at least one of the characteristics of the driving signal can be changed in response to a user's control; A face-washing device further comprising a. 3. The method of claim 2,
The characteristics of the driving signal include an amplitude and a DC offset. 4. The method of claim 3,
The value of the DC offset is set to be greater than or equal to the value of the amplitude. According to claim 1,
The signal supply unit,
a DC-DC converter that receives the battery voltage and converts it into an output voltage;
a signal generator generating the AC signal by using the output voltage of the DC-DC converter;
a filter for performing a filtering operation on the AC signal generated by the signal generator; and
a calibration unit generating the driving signal by mixing the DC signal with the AC signal supplied through the filter; A face-wash device comprising a. 6. The method of claim 5,
The signal supply unit,
a voltage divider configured to divide an output voltage of the DC-DC converter to generate the DC signal; A face-washing device further comprising a. According to claim 1,
The head part,
a face-washing unit on which the face-washing brush and the electrode are disposed on one surface; and
a head body having one end extending from the face-washing unit and having a distal end coupled to the body unit; A face-wash device comprising a. 8. The method of claim 7,
At least one protrusion is formed at the distal end of the head body. 9. The method of claim 8,
The body portion includes a receiving groove in which the distal end of the head body is accommodated,
At least one insertion groove corresponding to the protrusion is formed in the receiving groove,
As the protrusion is fitted into the insertion groove, the head part and the body part are coupled to each other. According to claim 1,
a battery disposed inside the body part; further comprising,
The body part,
and a switch for controlling the power supply by the battery and controlling the characteristics of the driving signal. 3. The method of claim 2,
The body part,
an inner case including a battery accommodating part in which the battery is located; and
a first circuit board seated on the inner case and on which the signal supply unit is mounted; A face-wash device comprising a. 12. The method of claim 11,
The body part,
a second circuit board seated on the inner case and on which a charging circuit for charging the battery is mounted; A face-washing device further comprising a.

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