KR101385515B1 - Skin washing machine having cosmetic brush of pbt quality - Google Patents

Abstract

The present invention relates to a face washing device having cosmetic brushes made of a polybutylene terephthalate resin material, and more specifically, to a face washing device having cosmetic brushes made of a polybutylene terephthalate resin material, wherein inner brushes rotate. The face washing device having cosmetic brushes made of a polybutylene terephthalate resin material according to one embodiment of the present invention comprises a case (100) for a face washing device and a brush for face washing.

Description

Skin washing machine having cosmetic slim hair brush made of polybutylene terephthalate resin {Skin Washing Machine Having Cosmetic Brush of PBT Quality}

The present invention relates to a facial cleansing device having a cosmetic slim hair brush made of polybutylene terephthalate resin, and in particular, the brush hair coating surface is divided into two, and the brush hairs made of polybutylene terephthalate resin are inserted into the inside and the outside, respectively. The brush brim is coupled to the inner side to form a rounded end, and the brush brim coupled to the inside to rotate relative to the brush brim coupled to the outside, and by making the lower portion of the bristle in the tapered form to clean the face more stable and smooth The present invention relates to a facial cleansing device having a cosmetic slim hair brush made of polybutylene terephthalate resin.

Generally, the desire for the beauty of the body is desired by everyone regardless of sex, age and sex. In order to pursue the beauty of the body, especially the skin, clean and systematic skin care is required. A skin care manager has been developed and used. These skin care managers are widely known and used in various forms according to the respective characteristics of the body part to be used.

In particular, as a method for managing the facial skin care of the body, skin care using cosmetics is performed basically, and functional cosmetics are currently used for cosmetics used for skin care.

Meanwhile, various devices for facial cleansing have been proposed so far. In order to rotate the cleaning brush, there is a method of simply generating rotation, a method of generating vibration, and a skin using a brushless electric motor And a facial cleanser.

The skin-cleansing device using the brushless electric motor described above is well-known in the Korean Patent No. 10-1257256, and includes a case 100 for a cleansing device; An operation unit 200 installed on the outside of the case for instructing on-off and on-off rotation switching in a predetermined angle unit; A power supply unit 300 installed at an inner side of the case; A brushless electric motor 400 installed inside the case and operated by receiving a power from a power supply unit according to a switching signal of the operation unit, A controller 500 for outputting an electric signal for controlling the forward and reverse rotation of the brushless electric motor at a predetermined angle in accordance with the switching signal of the operation unit; The brushless electric motor

And a cleansing brush 600 that is fitted on the shaft of the brushless electric motor 400 and rotates in the forward and reverse directions according to the operation of the brushless electric motor; The control unit 500 rectifies and smoothes the AC power to supply DC power, and includes a rectifying unit 510 including a rectifier 511 and a smoothing capacitor 512; The DC power supplied from the rectifying unit 510 is converted into three-phase alternating current power (U, V, W) in the form of pulses having an arbitrary variable frequency and supplied to the non-D-shaped motor 400. Six switching elements Q1 To Q6 and a diode 530; A terminal voltage detector 560 for detecting terminal voltages of the phases U, V and W from the three-phase AC power source supplied to the VDE motor 400; The zero crossing point ZCP of the counter electromotive force is detected in accordance with the terminal voltages of the phases U, V and W detected by the terminal voltage detector 560 to obtain the position information of the rotor and supplied to the inverter 30 A control circuit 570 for controlling the pattern of the PWM signal so that the motor rotates in the forward and reverse directions at a predetermined angle; And a PWM signal generator 580 for generating a pattern of the PWM signal by the output of the control circuit 570 and supplying the pattern to the inverter 530.

As shown in Figs. 1 and 2, a facial brush is coupled to a shaft of a brushless electric motor, and the facial brush rotates forward and backward in accordance with normal and reverse rotation of the brushless electric motor. I made cleansing possible.

However, in the above-described structure, there is a problem in that foreign matter remaining on the face is washed out when the cleansing brush rotates, and there is a problem that the cleansing brush splashes to the outside.

That is, when the cleansing brush is rotated, the face is rubbed. In this case, when the contents of the liquid remain, the cleansing brush rubs on the rotation of the cleansing brush and splashes in all directions.

Further, the conventional cleansing device using a brushless electric motor has a problem that it is difficult to provide a strong torque to the face because the electric motor simply rotates in the forward and reverse directions.

The present invention is to solve the above problems, install a separate support brush in the area that does not rotate at the time of installing the cleansing brush, install a cleansing brush in the interior, but connected to the electric motor for washing It is designed to make the liquid contents hang on the support brush when the brush is rotated, and the material is made of nylon, but the face wash brush is polished at the end in an arc shape so that the user's face can be touched smoothly.

It is another object of the present invention to apply a strong torque to a cleansing brush using a spring so that facial cleansing can be made easier.

As means for achieving the above object,

The present invention provides a cleansing device case (100) having a rotating means that rotates itself by receiving power from an electric or battery electricity or a secondary battery provided from the outside; And a cleansing brush (600) coupled to the cleansing device case and rotated; The cleansing brush 600 includes: a first brush bristle set 610 made of polybutylene terephthalate resin, which is installed on the output side panel of the electric motor and rotates forward and backward according to the forward and reverse rotation of the electric motor; It is installed on the outside of the front of the case a plurality of parallel to the first brush bristle set at the same time spaced apart a certain distance, and the first brush bristle set of the first brush bristle set to prevent the foreign matter is dispersed during rotation A second brush bristle set 620 of polybutylene terephthalate resin material which is fixedly wrapped around the periphery; The first bristle 611 constituting the first bristle set 610 and the second bristle 621 constituting the second bristle set 620 have tapered surfaces 611a and 621a at their ends. Formed; Each bristle 611 constituting the first bristle set 610 is rounded and arc-processed; The rotation unit includes an operation unit 200 installed on the outside of the case and for instructing on-off and constant-angle rotation in the forward and reverse directions; A power supply unit 300 installed at an inner side of the case; A brushless electric motor 400 installed inside the case and operated by receiving a power from a power supply unit according to a switching signal of the operation unit, A controller 500 for outputting an electric signal for controlling the forward and reverse rotation of the brushless electric motor at a predetermined angle in accordance with the switching signal of the operation unit; A holder 700 that is connected to the shaft 410 of the brushless electric motor 400 and includes a vertical panel and a horizontal panel bent in the shape of a tongue and is rotated in the normal and reverse directions in accordance with normal and reverse rotation of the brushless electric motor 400, ; A spring 800 coupled to one side of the horizontal panel of the holder and the other side coupled to the support and generating elasticity to cause in-situ torque when the holder flows vertically through the support in a vertical direction; A support portion 900 for supporting the other side of the spring to induce a torque; It is installed on top of the holder is characterized in that it comprises a weight 1000 to maintain the balance of the holder to induce a stable forward and reverse rotation of the holder.
Further, the tapered surfaces 611a, 621a, LT are formed over the length of 2 mm to 4 mm from the tip of the brush bristle; Brush tip end point (DT) is characterized in that the thickness is formed thinner than 10um.

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Each of the brush bristles 621 constituting the second brush bristle set 620 is characterized in that the end portion is rounded or formed in a straight line.

In addition, each of the bristles 611 and 612 constituting the first bristle set 610 and the second bristle set 620 has a thickness of 63 ± 10 μm.

In addition, the lengths of the brush hairs 611 and 612 constituting the first brush hair set 610 and the second brush hair set 620 are 11.0 ± 1.0 mm.

In addition, the bristles 611 and 612 constituting the first bristle set 610 and the second bristle set 620 may be 90,000-120,000.

In addition, the first brush model set 610 has a first color and the second brush model set 620 has a second color, and the colors are different from each other.

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As described above, in the present invention, a separate support brush is installed in an area that does not rotate when the cleansing brush is installed, and a cleansing brush is installed therein. The support brush is designed to be hooked, and the material is made of nylon, but the face wash brush has an effect of grinding the tip in an arc shape so as to gently touch the user's face.

Further, according to the present invention, a strong torque is applied to the cleansing brush by using a spring, thereby making facial cleans easier.

1 is a perspective view showing the entire configuration of the present invention.
Fig. 2 is a vertical cross-sectional view taken along line AA of Fig. 1; Fig.
3 is a perspective view showing the electric motor, the spring and the supporting portion of the present invention.
FIG. 4 is an exploded perspective view of FIG. 3; FIG.
5 is a spring operation view of the present invention.
Figure 6 is a brush model embodiment also applied to the present invention.

The operation principle of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings and description. It should be understood, however, that the drawings and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention, and are not to be construed as limiting the present invention.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The terms used below are defined in consideration of the functions of the present invention, which may vary depending on the user, intention or custom of the operator. Therefore, the definition should be based on the contents throughout the present invention.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. The configuration is omitted as much as possible, and a functional configuration that should be additionally provided for the present invention is mainly described.

Those skilled in the art will readily understand the functions of the components that have been used in the prior art among the functional configurations that are not shown in the following description, The relationship between the elements and the components added for the present invention will also be clearly understood.

In order to efficiently explain the essential technical features of the present invention, the following embodiments properly modify the terms so that those skilled in the art can clearly understand the present invention, It is by no means limited.

As a result, the technical idea of the present invention is determined by the claims, and the following embodiments are merely illustrative of the technical idea of the present invention in order to efficiently explain the technical idea of the present invention to a person having ordinary skill in the art to which the present invention belongs. .

1 is a perspective view showing the entire configuration of the present invention.

Fig. 2 is a vertical sectional view taken along line A-A of Fig. 1; Fig.

3 is a perspective view showing the electric motor, the spring and the supporting portion of the present invention.

FIG. 4 is an exploded perspective view of FIG. 3; FIG.

5 is a spring operation view of the present invention.

Fig. 6 is a perspective view of a brush body according to the present invention,

The present invention relates to a washing machine comprising a case 100 for a washing device, an operating part 200, a power supply part 300, a brushless electric motor 400, a control part 500, a cleansing brush 600, (700), a leaf spring (800), and a support part (900).

The cleansing brush 600 includes a first brush module set 610 having a first characteristic and a second brush module set 610 having a second characteristic. (620).

The first brush model set 610 and the second brush model set 620 are all formed by combining a plurality of bristles 611 and 621 and a front surface of the case 100 is connected to an electric motor connection panel The first brush model set 610 is inserted into the electric motor connection panel 110 of the case at a predetermined interval and the second brush model set 620 is inserted into the first brush model set 620. [ Are inserted into the fixed panel 120 of the case at regular intervals.

The electric motor connecting panel 110 preferably has five rows of holes, and six, twelve, twenty-one, twenty-seven, and thirty-three holes are formed from the innermost side. A total of two rows of holes are formed in the fixed panel 110, and 39 holes are formed.

The hole may be formed to have a width of 1.8 to 2.0 mm and a depth of 3.6 mm, and a hole may be formed of 450 to 850 bristles.

In addition, each of the bristles constituting the first bristle set and the second bristle set has a thickness of 63 ± 10 μm, the length of which is preferably 11.0 ± 1.0mm, and the total number of flocks is 90,000-12. desirable. In addition, if necessary, the first bristle set 610 may be formed of a first color, and the second bristle set 620 may be configured of a different color by using a second color. This is to make the fixed part visible from outside.

In the present invention, the bristles 611 and 621 are made of polybutylene terephthalate resin, and the polybutylene terephthalate resin (also referred to as PBT) applied to the present invention is essentially butanediol. It is understood that it is a condensation product of diacids consisting essentially of diols and terephthalic acid. The PBT resin is obtained by direct esterification of butanediol and terephthalic acid or by ester exchange of butanediol with terephthalic acid dimethyl ester resulting in the esterified residues of butanediol and terephthalic acid . The PBT may optionally be a copolymer comprising a minor amount of a polyfunctional alcohol or carboxylic acid as well as other components such as esterified residues of other diols and dicarboxylic acids in addition to esterified residues of butanediol and terephthalic acid. PBT in the compositions according to the invention typically contains at least 70% by weight of esterified residues of butanediol and terephthalic acid, based on the weight of the PBT. And, suitable diols that may be included in PBT are, for example, ethylene glycol, diethylene glycol, propylene glycol, 2,3-pentanediol, neopentyl glycol, hexamethylene glycol and cyclohexane dimethanol. Suitable dicarboxylic acids are, for example, orthophthalic acid, isophthalic acid, naphthalene dicarboxylic acid, adipic acid, sebacic acid and succinic acid.

The brush head of the polybutylene terephthalate resin material of the present invention is formed in the shape of a slim hair, especially by forming a tapered bottom, and having a thickness of 63 ± 10 μm and a length of 11.0 ± 1.0 mm, from the end portion. The tapered surfaces 611a, 621a, and LT are formed in a state ranging from 2 to 4 mm and having a thickness DT of 10 m or less.

In addition, the brush bristle 611 constituting the first bristle set 610 may call the end of the brush bristle 611b, the second bristle bristle set 620 is a call treatment or in the form of a straight (621b) Can be processed.

The case 100 for a facial cleanser has an outer appearance that can be held by hand, and a power supply unit and a brushless electric motor are accommodated therein, and an operation unit is disposed outside. The case 100 is divided into an electric motor connecting panel 110 and a fixed panel 120. The first brush module set 610 is spaced apart from the electric motor connecting panel 110 of the case at a predetermined interval And the second brush model set 620 is inserted into the fixed panel 120 of the case at regular intervals. The electric motor connection panel flows left and right when the electric motor rotates.

The operation unit 200 is installed on the outside of the case and is configured as a toggle type or a pushbutton type so that it is possible to instruct forward and reverse rotation in units of power on and off and in a certain angle range so that the brushless electric motor rotates forward and reverse .

The power supply unit 300 is installed inside the case and serves to supply power to the apparatus. In addition, the power supply unit may use a battery or a rechargeable battery, and may be supplied with power through a cable by being connected to an external power source.

The brushless electric motor 400 is installed inside the case and receives power from a power supply unit according to a switching signal of the operation unit and operates normally and rotates in a constant angle unit.

The control unit 500 detects a counter electromotive force from the brushless electric motor to detect the position of the rotor and outputs an electric signal for controlling the normal rotation of the brushless electric motor at a predetermined angle in accordance with the switching signal of the operation unit.

The cleansing brush 600 includes a first brush model set 610 and a second brush model set 620. The first brush model set rotates and rotates the face in accordance with the operation of the brushless electric motor, .

The holder 700 includes a vertical panel 700a and a horizontal panel 700b which are connected to the shaft 410 of the brushless electric motor 400 and are folded in the shape of a tongue and the brushless electric motor 400 ) According to the forward and reverse rotation.

The spring 800 is coupled to one side of the horizontal panel bottom surface of the holder 700 and the other side is coupled to the support 900. When the holder 700 is vertically moved in the vertical direction, But provides elasticity to generate in situ torque. The spring 800 is preferably formed of a leaf spring in the form of a rectangular panel. That is, although a coil spring can be applied according to need, a leaf spring is applied for stronger instantaneous torque. In the case of applying the leaf spring, it is preferable that a flow hole 710 is formed in the holder 700 so that the spring 800 can be made to flow laterally more easily by sliding coupling.

A brushless electric motor (BLDC motor) 400 according to the present invention includes a stator for generating a rotating magnetic field spatially rotating, a stator for generating a magnetic field by incorporating a permanent magnet, and rotating relative to the rotating speed of the rotating magnetic field A separate control device for controlling the rotation of the motor is provided, which includes a rotor as an essential component.

The object of control of the rotor position detection in the non-Diesel motor 400 of the present invention is an ideal control without torque ripple, so that both the voltage and the current are sinusoidal. In order to drive the BIEDY motor 400, an initial driving algorithm is required because the magnet position of the rotor is not known at an initial stage in any control method. In this case as well, since the rotor must start rotating once, A separate initial drive algorithm is needed. This initial driving algorithm is a known technique already used in the control of all VDDSM motors 400. In this case, a known forced alignment method is used, and a detailed description thereof will be omitted.

When the initial position of the magnet of the rotor is thus obtained, the rotor is synchronously rotated in a predetermined order until the rotational frequency reaches a predetermined speed to generate an induced electromotive force. And enters the sinusoidal wave control from this section. The driving method generally uses the same PWM control method as the sinusoidal control method of AC induction motor. However, various methods such as a triangular wave, a sawtooth wave method, or a circular approximation method can be applied to the carrier frequency.

Detects a zero crossing point (ZCP) through which the induced electromotive force of each phase obtained by the rotation of the rotor passes through the zero crossing, performs a phase change based on the zero crossing point (ZCP) information, and outputs a PWM drive signal to the phase. Since this is driven by three phase energization, the current waveform has a sinusoidal waveform.

At this time, it is advantageous to distribute the windings of the BDDO motor 400 in order to facilitate the detection of the zero crossing point (ZCP).

Hereinafter, the overall operation of the present invention will be described.

When the user turns on the power switch, the electric motor operates.

In the present invention, the control circuit is programmed to rotate the brushless electric motor 400 forward and reverse, and the first brush bristles 611 constituting the first brush bristle set 610 among the cleansing brushes 600 are rotated Rotate.

That is, the rotor of the brush-lead electric motor 400 rotates by a predetermined angle, then checks the position using the induced electromotive force, and then rotates the rotor in the reverse direction. The brush bristles 611 constituting the first brush bristle set 610 among the cleansing brushes 600 repeat normal rotation and reverse rotation.

The second brush model set 620 of the cleansing brush 600 is in a fixed state, so that even if the foreign substance or the like on the face is washed during the forward and reverse rotation of the first brush model set 610, And the second brush bristles 621 constituting the second brush bristle set 620 are all blocked.

In other words, since the first brush model set 610 rotates in the forward and reverse directions, the second brush model set 620 maintains the stop state. Therefore, even if foreign substances are splashed in the course of rotating the first brush model set 610 in the forward and reverse directions, All of the second brush bristles 621 constituting the brush bristle set 620 are caught, and foreign matter is not splashed to the outside.

In addition, the end of the first brush bristle 611 is rounded so that the arc treatment (611b) is smoothly glanced without giving a strong irritation to the face, so that the face of the user can be washed more smoothly and easily. In addition, it will provide a massage effect.

In this case, since the spring 800 is coupled to the holder 700 of the brushless electric motor 400, the spring 800 is deformed as the holder 700 rotates in the forward and reverse directions.

That is, when the holder 700 is rotated in the clockwise direction, the spring 800 is bent in the clockwise direction, and when the holder 700 is rotated in the counterclockwise direction, the spring 800 is bent in the counterclockwise direction.

Since the spring 800 is made of a material having an elastic restoring force, when the spring 800 is bent as the electric motor 400 rotates and the holder 700 rotates, when the rotation of the electric motor 400 is completed A strong torque is applied, and the maximum return force is taken.

Accordingly, in the present invention, the cleansing brush 600 is rotated in the normal and reverse directions very rapidly.

That is, after the electric motor 400 rotates by a predetermined angle, the spring 800 is at the maximum deflection state. When the reverse rotation force of the electric motor 400 is applied at this time, the spring force is added and the reverse rotation is rapidly performed. At the time when the reverse rotation is completed, the spring 800 is returned to the original position and then is bent to the maximum in the other direction. Therefore, the rotation is performed while rapidly switching to the forward direction while the maximum torque is applied.

As described above, since the electric motor 400 operates in the forward and reverse directions while moving fast, a strong torque is applied to the cleansing brush 600, so that cleansing is performed with stronger force.

In the case of using the cosmetic slim hair brush hair of the polybutylene terephthalate resin material of the present invention, the effect of the comparison with hand-washing is as follows.

Pore area Hand cleanser PBT Slim Cap Before use 45.26 49.02 after use 35.00 34.85 Reduction rate 22.70% 28.90%

In the above, the pores counted the number of pores of a predetermined diameter or more in the ball pores, and when washed by hand, showed a reduction rate of 22.70%, but the cosmetic slim hair brush hair made of the polybutylene terephthalate resin material of the present invention Washing with forward and reverse rotation showed a pore reduction of 28.90%. Accordingly, it can be seen that the effect of reducing the pore of the cheek area is very large when using a slim hair-type cleansing brush made of polybutylene terephthalate resin material of the present invention.

Nose pore Hand cleanser PBT Before use 12.23 11.30 Immediately after use 10.82 9.80 after 2 weeks 10.92 9.21 Four weeks 9.96 8.90 Decrease rate (4 weeks) 18.6% 21.3%

In the above, the pores counted the number of pores of a certain diameter or more in the nasal pores, and when washed by hand, showed a reduction rate of 18.6% after 4 weeks, but the cosmetic slim hair of the polybutylene terephthalate resin material of the present invention Washing the brush by forward and reverse rotation showed a pore reduction of 21.3%. Accordingly, it can be seen that the effect of reducing the pore area of the nose is very large when using a slim hair-type cleansing brush made of polybutylene terephthalate resin material of the present invention.

corneous Hand cleanser PBT Before use 7.22 8.56 Immediately after use 6.54 7.74 after 2 weeks 5.61 6.80 Four weeks 5.41 5.90 Decrease rate (4 weeks) 25.1% 31.1%

As a result of comparing the exfoliation state, when washing by hand, it showed a 25.1% reduction rate after 4 weeks, but the result of washing the face by rotating the cosmetic slim hair brush hair of the polybutylene terephthalate resin material of the present invention 31.1% Reduction rate of is shown. Accordingly, it can be seen that the exfoliation effect is very large when using a slim hair-type cleansing brush made of polybutylene terephthalate resin material of the present invention.

Pigmentation skin change Hand cleanser PBT Before use 146.00 131.88 after 2 weeks 145.65 124.86 Four weeks 145.57 121.82 Decrease rate (4 weeks) 0.3% 7.6%

The change in the brightness of the skin is the analysis of the melanin index of the pigmentation site, and when washed by hand, showed a 0.3% reduction after 4 weeks, the cosmetic slim hair brush hair made of polybutylene terephthalate resin material of the present invention After washing by rotating, it showed a decrease rate of 7.6%. Accordingly, it can be seen that the melanin index is reduced and the skin turns bright when a slim hair-type cleansing brush made of polybutylene terephthalate resin material of the present invention is used.

Eye wrinkles (um, Rmax (maximum wrinkle depth)) Hand cleanser PBT Before use 223.11 230.15 after 2 weeks 218.50 225.30 Four weeks 219.19 217.65 Decrease rate (4 weeks) 1.8% 5.4%

When face-washed by hand as described above, the depth reduction rate of the eye wrinkles is only 1.8%, and the result of the face-washing by washing the cosmetic thin hair brush hair made of polybutylene terephthalate resin material of the present invention as a result of a 5.4% reduction It was. Accordingly, it can be seen that the reduction rate of the wrinkles around the eyes is high when the face brush of the slim hair type made of polybutylene terephthalate resin material of the present invention is used.

100: Case for a cleansing device
200:
300: Power supply
400: Brushless Electric Motor
500:
600: Cleansing brush
610: First Brush Set
611: Brushes of the first brush set
620: Second Brush Set
621: Brushes of the second brush set
700: Holder
800: leaf spring
900: Support
1000: weight weight

Claims (9)

A case 100 for a washing machine having a rotating means for receiving power from an externally provided electric or battery electric or secondary battery and self-rotating; And a cleansing brush (600) coupled to the cleansing device case and rotated;
The cleansing brush 600 includes: a first brush bristle set 610 made of polybutylene terephthalate resin, which is installed on the output side panel of the electric motor and rotates forward and backward according to the forward and reverse rotation of the electric motor; It is installed on the outside of the front of the case a plurality of parallel to the first brush bristle set at the same time spaced apart a certain distance, and the first brush bristle set of the first brush bristle set to prevent the foreign matter is dispersed during rotation A second brush bristle set 620 of polybutylene terephthalate resin material which is fixedly wrapped around the periphery; The first bristle 611 constituting the first bristle set 610 and the second bristle 621 constituting the second bristle set 620 have tapered surfaces 611a and 621a at their ends. Formed;
Each bristle 611 constituting the first bristle set 610 is rounded and arc-processed;
The rotation unit includes an operation unit 200 installed on the outside of the case and for instructing on-off and constant-angle rotation in the forward and reverse directions; A power supply unit 300 installed at an inner side of the case; A brushless electric motor 400 installed inside the case and operated by receiving a power from a power supply unit according to a switching signal of the operation unit, A controller 500 for outputting an electric signal for controlling the forward and reverse rotation of the brushless electric motor at a predetermined angle in accordance with the switching signal of the operation unit; A holder 700 that is connected to the shaft 410 of the brushless electric motor 400 and includes a vertical panel and a horizontal panel bent in the shape of a tongue and is rotated in the normal and reverse directions in accordance with normal and reverse rotation of the brushless electric motor 400, ; A spring 800 coupled to one side of the horizontal panel of the holder and the other side coupled to the support and generating elasticity to cause in-situ torque when the holder flows vertically through the support in a vertical direction; A support portion 900 for supporting the other side of the spring to induce a torque; And a weight (1000) installed at an upper portion of the holder and maintaining a balance of the holder to induce a stable forward / reverse rotation of the holder. The method according to claim 1,
The tapered surfaces 611a, 621a, LT are formed over the length of 2 mm to 4 mm from the tip of the brush bristle; Brush hair end point (611b, 621b, DT) facial cleansing device having a cosmetic slim hair brush made of polybutylene terephthalate resin, characterized in that is formed thinner than 10um in thickness. delete The method according to claim 1,
Each brush bristle 621 constituting the second bristle bristle set 620 is a face-wash with a cosmetic slim hair brush made of polybutylene terephthalate resin, characterized in that the end is rounded arc or dated Device. The method according to claim 1,
Each of the bristles 611 and 612 constituting the first bristle set 610 and the second bristle set 620 has a thickness of 63 ± 10 μm, and is made of polybutylene terephthalate resin. Face wash with cosmetic slim hair brush. The method according to claim 1,
The length of the brush heads 611 and 612 constituting the first brush head set 610 and the second brush head set 620 is 11.0 ± 1.0 mm, the makeup of the polybutylene terephthalate resin material Cleansing device with a slim hair brush. The method according to claim 1,
Make-up made of polybutylene terephthalate resin, characterized in that the bristles 611 and 612 constituting the first bristle set 610 and the second bristle set 620 are planted 90,000-120,000. Cleansing device with a slim hair brush. The method according to claim 1,
The first brush bristle set 610 is made of a first color, the second brush bristle set 620 is made of a polybutylene terephthalate resin material, characterized in that the different colors made of a second color Cleansing device with slim hair brush. delete

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