KR20210148477A - Head Device for Skin Beauty Apparatus and Manufacturing Method Thereof - Google Patents

Abstract

The present invention relates to a head device for a skin care instrument and a method of manufacturing the device. The head device for a skin care instrument according to an embodiment of the present invention comprises: a main body part in which one side and the other side are open, and which comprises a first supporting part and a second supporting part in a stair form on an inner wall thereof; a vibration generating part which generates vibration to the skin of a user by being fastened to one side of the main body part and supported by the first supporting part; and a sensor part which senses penetrating force of the vibration to the skin by being fastened to the other side of the main body part and supported by the second supporting part to be accommodated in the main body part. According to the present invention, the absorption rate of cosmetic products and medicines can be improved.

Description

Head Device for Skin Beauty Apparatus and Manufacturing Method Thereof

The present invention relates to a head device for a skin care device and a method of manufacturing the device, and more particularly, by providing a vibrator and a sensor in the head of, for example, a skin massage device, it is possible to conveniently find a vibration signal suitable for the user's skin. It relates to a head device for a skin care device and a manufacturing method of the device.

Under the stratum corneum of the human facial skin epidermis, a protective barrier is formed with a thick protein protective layer to protect the skin. Since the epidermis and dermis layers are separated by a protein protective layer, when various nutrients, physiologically active substances, and therapeutic agents are applied to the skin, the substances applied to the skin cannot penetrate deep into the dermis layer, so wastes accumulated in the dermis layer cannot be removed. . For this reason, the effect of skin beauty and treatment is insufficient.

Nutrients, physiologically active substances, and therapeutics applied to the skin are used in cosmetic devices that generate vibrations to enhance the effect of skin care and treatment. For example, when using a cosmetic device that generates vibration, the user applies a nutritional substance to the skin of the face and then massages the facial skin that has been applied with the nutritional substance by vibration with the cosmetic device, so that the nutritional substance penetrates deeply into the skin to beautify the skin. will increase the effect.

However, the absorption rate of cosmetics or medicines is less than 3%, and most of them are not absorbed and are vaporized and blown away. Accordingly, there is an urgent need for a technology to increase the absorption rate of cosmetics or pharmaceuticals.

In addition, conventionally, since a device for giving vibration and a device for sensing are used separately, measurement is not performed at the same location, so there is a problem in the effect, and there is a lot of inconvenience in using the device by the user.

Korean Patent Publication No. 10-1257013 (2013.04.16) Korean Utility Model Publication No. 20-0474471 (2014.09.12) Korean Patent Publication No. 10-2017-0097201 (2017.08.25) Korean Patent Publication No. 10-2019-0141323 (2019.12.24) Korean Patent Publication No. 10-2019-0100258 (2019.08.28)

The present invention has been devised to solve the above problems, and the present invention is for a skin care device that is provided with a vibrator and a sensor in the head of a skin massage device so that a vibration signal suitable for the user's skin can be conveniently found. To provide a head device and a method for manufacturing the device

Another object of the present invention is to provide a method for generating a skin beauty signal that maximizes the absorption of cosmetics or medicines for each user or body part of the user.

Other objects of the present invention will become clearer through preferred embodiments described below.

According to one aspect of the present invention, a head device for a skin care device has one side and the other side open, and a body portion including a step-shaped first support portion and a second support portion on an inner wall, and is fastened to one side of the main body portion. It is supported by the first support part and accommodated in the main body part, and a vibration generating part that generates vibration with the user's skin, and the other side of the main body part is supported by the second support part and accommodated in the main body part. , It includes a sensor unit for sensing the penetrating force of the vibration to the skin.

Here, the vibration generating unit may include a vibration speaker, and the sensor unit may include a piezo sensor.

Here, the vibration generating unit may further include a fixing member supported by the first support unit to fasten the vibrating speaker to one side and to position the battery unit at the other side.

Here, the body part may further include a third support part on the inner wall for accommodating the circuit board on one side of the battery part.

Here, the sensor unit may further include a thermoelectric element that transfers heat to the skin.

In addition, the method of manufacturing a head device for a skin care device according to another aspect of the present invention includes the steps of opening one side and the other side, and forming a body part including a step-shaped first support part and a second support part on the inner wall, the user's The step of fastening the vibration generating part for generating vibration to the skin to one side of the main body part, supporting it by the first support part, and receiving it inside the main body part, and a sensor part for sensing the penetrating force of the vibration to the skin, the other part of the main body part and accommodating it in the body part by fastening to the side and supporting it by the second support part.

Here, a vibrating speaker may be used as the vibration generating unit, and a piezoelectric sensor may be used as the sensor unit.

Here, the step of accommodating the vibration generating unit may include fastening the vibration speaker to one side of the fixing member supported by the first supporting unit, and locating the battery unit at the other side of the fixing member.

Here, the manufacturing method may further include accommodating the circuit board supported by a third support part formed on one side of the battery part on the inner wall of the main body part.

Here, the step of accommodating the sensor unit may include a thermoelectric element that transfers heat to the skin.

According to the configuration of the present invention as described above, the following effects can be achieved.

According to an embodiment of the present invention, it will be possible to increase the absorption rate of cosmetics or medicines by measuring and using vibration suitable for the user's skin.

In addition, according to an embodiment of the present invention, since the device for giving vibration and the device for sensing are configured in one device, it is convenient to use the device and has reliability in effect.

In addition, the embodiment of the present invention will be able to increase the absorption rate of cosmetics or medicines by using vibrations having an optimal cosmetic effect for each person and each skin part.

1 is a cross-sectional view and a plan view of a head device of a skin care device according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of the head device of Figure 1;
3 is a flowchart illustrating a manufacturing process of the head device shown in FIG. 1;
4 is a flowchart illustrating a method of generating a skin care signal performed by the skin care device equipped with the head device shown in FIG. 1 of the present invention.
5 is a diagram illustrating a sweep signal having a constant amplitude according to an embodiment of the present invention;
6 is a view showing a process of obtaining a resonant frequency by applying a sweep signal to the skin according to an embodiment of the present invention.
7 is a view showing a resonance frequency obtained for each skin part through the process shown in FIG.
8 is a view showing a process of obtaining a peak frequency passing through the skin by applying a sweep signal to the skin according to an embodiment of the present invention.
9 is a diagram illustrating a process of learning an AI model using the constructed training data set according to an embodiment of the present invention.
10 is a diagram illustrating a peak frequency corresponding to a resonance frequency for each skin part inferred by an AI model according to an embodiment of the present invention.
11 is a view showing a method of generating a non-sinusoidal beauty signal by combining a plurality of peak frequencies according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms. In the present specification, the present embodiment is provided to complete the disclosure of the present invention, and to fully inform those of ordinary skill in the art to which the present invention pertains to the scope of the invention. And the invention is only defined by the scope of the claims. Accordingly, in some embodiments, well-known components, well-known operations, and well-known techniques have not been specifically described to avoid obscuring the present invention.

In addition, like reference numerals refer to like elements throughout the specification, and terms used (referred to) in this specification are for the purpose of describing the embodiments and are not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase, and elements and operations referred to as 'comprising (or having)' do not exclude the presence or addition of one or more other elements and operations. . Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not ideally or excessively interpreted unless they are defined.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

1 is a cross-sectional view and a plan view of a head device of a skin care device according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the head device of FIG. 1 .

1 and 2, the head device 100 of the skin care device 10 according to an embodiment of the present invention includes a body portion 120, vibration generating units 130, 140, 141, and a sensor unit. ( 110 , 113 , 115 ), the battery unit 150 , the circuit board 160 , and some or all of the cover 170 .

Here, "including some or all" means that some components such as the battery unit 150, the circuit board 160 or the cover 170 are omitted, or the sensor unit 110, 113, and 115, such as Some or all of the components are described as including all to help a sufficient understanding of the invention as meaning that it can be configured by being integrated with the body part 120 .

As can be seen in FIGS. 1 and 2 , the main body 120 has openings (or openings) formed on both sides, that is, on one side and the other side. It may be formed in a circular shape. Of course, the embodiment of the present invention will not be particularly limited to the prototype. The opening of one side has a larger diameter than the opening of the other side, and thus, as shown in (a) of FIG. 1 , the cross-section may have a trapezoidal shape. 1 shows the shape of a historical trapezoid. Of course, the opening of one side having a large diameter may be fastened to the skin care device 10 . In addition, according to an embodiment of the present invention, the opening of one side of the main body 120 may have a diameter of 80 mm, the opening of the other side may have a diameter of 50 mm, and a height of about 65 mm. Furthermore, the inner wall of the body part 120 includes a plurality of support parts (121 to 124). For example, the first to fourth support parts 121 to 124 are formed on the inner wall, and accordingly, the inner wall of the main body 120 may have a step shape as a whole. The body part 120 may be formed in a form that is injected by injecting a casting such as poly into a mold.

In the main body 120 according to the embodiment of the present invention, vibration generating units (eg, vibrating devices) 130 , 140 , 141 are fastened on the first support unit 121 formed on the inner wall. In other words, the vibration generating units 130 , 140 , and 141 are supported by the first support unit 121 and accommodated in the body unit 120 . The vibration generators 130 , 140 , and 141 may refer to only vibrators that generate vibrations by an external control signal provided from the circuit board 160 as vibration generators. However, in the embodiment of the present invention, the fixing member 140 for supporting the vibrator 130 by the first support 121 and fastening means for attaching (or fastening) the vibrator 130 to the fixing member 140 . As an adhesive member 141 may be further included. For example, an adhesive member 141 such as a double-sided tape is provided on one side of the fixing member 140 , and the vibrator 130 may be attached to the adhesive member 141 . Here, the vibrator 130 includes a vibrating speaker. Of course, the vibrator 130 may be a small motor may be used. It is preferable that the vibrating speaker has a structure that is easily attached to the adhesive member 141 . That is, the vibrating speaker can be separated by being coupled to the vibrating plate, and the vibrating plate can be adhered to the adhesive member 141 . In addition, it is preferable that the vibrating plate is designed in consideration of internal space saving. The fixing member 140 adheres the upper end of the vibrating speaker to the adhesive member 141 so as not to be twisted or tilted by the vibrator 130, that is, to prevent movement from occurring, where the adhesive member 141 is a sponge tape. (eg 5T) can be fixed.

The vibrator 130 is, for example, a vibrating speaker, which is controlled by an external control signal to generate vibration. The vibrator 130 includes a vibrating speaker that generates vibrations to transmit (or transmit) to the skin. That is, the vibration generated by the vibration speaker is transmitted to the user's skin. The generation of vibration operates the vibrator 130 at a reference frequency. Of course, the reference frequency may be set in various ranges. The designated driving frequency becomes a reference value for measuring the user's skin condition. Accordingly, after the vibrator 130 operates by the reference frequency, when the (state) measurement of the user's skin is completed, the vibrator 130 may operate by changing to a frequency suitable for the user's skin characteristics. Of course, this may be controlled by a control unit such as a CPU or MPU of the circuit board 160 provided on one side of the vibrator 130 .

The sensor units 110 , 113 , and 115 are fastened to the other open portion of the main body 120 . The sensor units 110 , 113 , and 115 include a head (unit) 110 formed of a material such as titanium, and a first element 113 and a second element 115 provided in the head 110 . do. The head 110 includes a protrusion 111 on the outer sidewall of the upper side, and the protrusion 111 may be inserted and fastened to the inside of the other open part of the main body 120 . The side wall on which the protrusion 111 of the head 110 is formed is inserted into the other open portion of the main body 120 and supported so that it is not inserted further by the second support 122 formed inside the main body 120 . is concluded as It acts as a kind of stopper. The thickness of the head 110 is preferably formed to be 2T (Thickness), that is, 2mm. At a thickness of 2T, heat of the second element 115 such as an internal thermoelectric element (or a heating element) may be rapidly conducted to the external skin contact surface. The thermoelectric element may include, for example, an electric module composed of a P-type semiconductor using holes (holes) as carriers for moving charges, an N-type semiconductor including free electrons, and a ceramic substrate surrounding the outside.

The inside of the head 110 is provided with, for example, a vibration sensor. The first sensor 113 such as a vibration sensor detects the user's skin condition when vibration is generated by the vibrator 130 . That is, it can be seen that the first element 113 senses the vibration penetrating force to the skin. The first element 113 according to an embodiment of the present invention includes a piezo sensor. Piezo is a pressure gauge that uses the property of generating electricity on the surface of a crystal (eg, quartz, tourmaline, etc.) when pressure is applied in a specific direction. That is, the piezo sensor corresponds to a vibration sensor that measures vibration applied to the skin in the form of pressure. Since the thickness and density of the skin are different for each person, after vibration is generated by the reference frequency, the skin condition of users according to the vibration is measured by the first element 113 to find the appropriate vibration for each user based on this. it can be seen that Of course, if you massage through the vibrations found through this process, the absorption rate of cosmetics or drugs will increase. Of course, even for one user, the thickness and density of the skin are different for each part of the face, such as the cheek, chin, and forehead, so you can use different vibrations to massage each part.

In addition, a thermoelectric element is further provided as the second element 115 inside the head 110 . As the thermoelectric element, a Petier (or Peltier) (TEC) thermoelectric element may be used. A thermoelectric element is a semiconductor element that converts thermal energy and electric energy, and is an element using the Peltier effect. The Peltier effect means that heat is absorbed or generated when an electric current is sent through the junction of two different metals. The thermoelectric element used in the embodiment of the present invention may be of two types as shown in FIG. 1(b). In other words, it can be arranged on the head 110 in various forms as shown in (b) of FIG. The heat generated by the thermoelectric element is rapidly conducted to the external skin contact surface, which can help the absorption of cosmetics or drugs.

A circuit board 160 is provided on the third support part 123 formed on the inner wall of the main body 120 , and a printed circuit board (PCB) or FPCB may be mounted on it. It may further include a thermal barrier to block heat so that heat is not transferred to the circuit board 160. It is mounted on the circuit board 160 and the first support part 121 formed on the inner wall of the body part 120. The battery unit 150 is positioned between the fixing member 140 and the circuit board 160. The circuit board 160 may receive operating power from the battery unit 150. In addition, the CPU provided on the circuit board 160 , the control circuit such as MPU can operate by receiving power from the battery, and can control the vibrator 130 , the first element 113 , and the second element 115 provided in the main body 120 . In other words, the control circuit on the circuit board 160 generates vibration by controlling the vibrator 130. In order to measure the vibration transmittance or absorption rate of the skin, vibration signals (or driving frequencies) of various frequencies within a predetermined range ) can be applied to generate vibration, and the vibration penetration power of the skin caused by the generated vibration is analyzed through the sensing value of the first element 113. Then, the vibration signal with the best penetration power is selected in the corresponding part. (or judge).

Therefore, thereafter, the control unit provided on the circuit board 160 causes the massage to be performed using the vibration signal when the skin massage of a specific area is performed according to a user's control command or the like. Of course, the vibration signal may have different skin thickness or density for each user, and in the case of a single user, the skin thickness and density are different for each face part such as cheeks, chin, forehead, etc. Vibration signals can be used. That is, by selecting the highest signal among the vibration signals penetrating into the skin, a beauty signal is generated and used.

A cover 170 for protecting the internal circuit board 160 of the head device 100 from external impacts is provided on the fourth support part 124 of the body part 120 . The cover 170 may be called a protective cover in this sense. A button for receiving a user's control command may be formed on the cover 170 .

As described above, for example, by including the vibrator 130 and the vibration measuring sensor in the skin massage head, the vibration signal applied to the skin can be inferred by using the change in the vibration signal before and after touching the skin. By analyzing the characteristics of vibrations penetrating the human body and finding vibrations that penetrate the skin well, it is possible to configure the cosmetic device 10 to maximize absorption.

3 is a flowchart illustrating a manufacturing process of the head device shown in FIG. 1 .

Referring to FIG. 3 together with FIG. 1 for convenience of explanation, the head device 100 of FIG. 1 according to an embodiment of the present invention has one side and the other open, and includes a first support part and a second support part in the form of steps on the inner wall. to form the main body portion 120 (S300).

In addition, the head device 100 fastens the vibration generating units 130 , 140 , 141 that generate vibration to the user's skin to one side of the body unit 120 to support it by the first support unit 121 to support the body unit ( 120) stored in the interior (S310). Here, the vibration generating units 130 , 140 , 141 may refer to only the vibrator 130 , but in the embodiment of the present invention, the fixing member 140 supported by the first support unit 121 , and the fixing member 140 . Both the adhesive member 141 provided on one side and the vibrator 130 attached to the adhesive member 141 may be included. The vibrator 130 may include, for example, a vibrating speaker and a vibrating plate fastening the vibrating speaker to one side and attaching the other side to the adhesive member 141 . The vibrating speaker may be coupled to the vibrating plate, and the vibrating plate may have a structure that is adhered to the adhesive member 141 again.

Further, the head device 100 fastens the sensor units 110 , 113 , and 115 for sensing the penetrating force of vibration to the skin to the other side of the body unit 120 to support it by the second support unit 122 to support the body unit ( 120) stored in the interior (S320). Here, the sensor units 110 , 113 , and 115 include a head 110 , a first element 113 and a second element 115 provided inside the head 110 , and the first element 113 is The piezoelectric sensor that senses the penetrating force of vibration to the skin, and the second element 115 may include a thermoelectric element that generates heat.

In addition to the above, detailed information related to FIG. 3 has been sufficiently described with reference to FIGS. 1 and 2 above, so it will be replaced with those contents.

4 is a flowchart illustrating a method for generating a skin care signal performed by the skin care device equipped with the head device shown in FIG. 1 of the present invention, and FIG. 5 is a sweep in which the amplitude is constant according to an embodiment of the present invention. It is a view showing a signal (sweep signal), and FIG. 6 is a view showing a process of obtaining a resonant frequency by applying a sweep signal to the skin according to an embodiment of the present invention, and FIG. 7 is a process shown in FIG. It is a view showing the resonant frequencies obtained for each skin part, and FIG. 8 is a view showing a process of obtaining a peak frequency passing through the skin by applying a sweep signal to the skin according to an embodiment of the present invention, and FIG. 9 is the present invention is a diagram showing a process of learning an AI model using the built-up training data set according to an embodiment of the present invention, and FIG. FIG. 11 is a diagram illustrating a method of generating a non-sinusoidal beauty signal by combining a plurality of peak frequencies according to an embodiment of the present invention.

As shown in FIG. 4 , in step S410 , in the skin care device 10 , the amplitude of the sweep signal or chirp signal generated while the user holds the skin care device 10 is constant. Perform the steps of presetting as much as possible. That is, the sweep signal generated while the user holds the skin care device 10 has a waveform having a constant amplitude as shown in FIG. 5 . The reason for performing the presetting step is that the amplitude of the sweep signal required to perform step S420 is constant, and even if the amplitude of the sweep signal generated by the skin care device 10 in an unholding state is constant, the skin care device 10 ) is gripped, some of the generated vibrations are attenuated due to gripping, and the amplitude is distorted. Here, the sweep signal generated by the skin care device 10 has a predetermined frequency range (eg, 0-8 kHz) and a predetermined time range (eg, 3000 msec).

In step S420, the step of applying the sweep signal in a state in which the skin care device 10 is in contact with a specific skin part of the user is performed. In this case, the specific skin part of the user is the forehead, cheeks, temple, chin, and the like.

In step S430, the skin care device 10 senses a vibration signal generated according to the application of the sweep signal. At this time, the sensing of the vibration signal is performed in a state in which the skin care device 10 is in contact with the specific skin part. That is, as shown in reference numeral 610 of FIG. 6 , the application of the sweep signal and the sensing of the vibration signal are performed while the head of the skin care device 10 is in contact with the skin. The vibration signal sensed while in contact with the skin may be in the form of reference numeral 620 . That is, the applied vibration signal is a sweep signal having a constant amplitude, and the sensed vibration signal is a signal (eg, 620 ) whose amplitude is distorted because some vibrations are attenuated according to skin contact. The sensing of the vibration signal may be performed simultaneously or sequentially with the application of the sweep signal or with a small time difference.

In step S440, the skin care device 10 performs a Fast Fourier Transform (FFT) on the sensed vibration signal (eg, 620) to obtain a waveform representing the amplitude value (y-axis) according to the frequency (x-axis). , and by analyzing it, the resonant frequency is obtained. In this case, the resonance frequency is a value at which the slope becomes 0 in the above-described waveform, and may be one or more (refer to 630). Here, the matters related to the fast Fourier transform used are related to well-known engineering (or mathematical) definitions and algorithms, and thus a detailed description thereof will be omitted.

In step S650, the skin care device 10 infers a peak frequency corresponding to the vibration signal sensed from the other side of the skin passing through the specific skin area when the sweep signal is applied to the specific skin area using the resonance frequency. When the processing capability of the skin care device 10 is lowered, the inference process may be performed in another electronic device (eg, a computer, a server, etc.) connected to the skin care device 10 by wire or wirelessly. For example, referring to FIG. 8 , a sweep signal is applied to one surface of the skin (refer to 810), and vibration is sensed from the opposite side of the skin (refer to 820). In this case, the sensed vibration signal may be in the form of reference numeral 830 . Thereafter, the sensed vibration signal (eg, 830) is subjected to Fast Fourier Transform (FFT) to obtain a waveform representing the amplitude value (y-axis) according to the frequency (x-axis), and it is analyzed to obtain a peak frequency acquire Here, the peak frequency is a value at which the slope becomes 0 in the above-described waveform, and may be one or more.

However, since it is impossible to sense a vibration signal by inserting a vibration sensing device inside the skin of a person, the peak frequency according to the present invention is obtained through inference using an AI model. Hereinafter, we will look at how to construct a training data set for creating an AI model and infer the peak frequency.

The AI model training dataset consists of input data and output data. The input data is a set of resonance frequencies obtained by applying a sweep signal to an arbitrary surface of the skin and fast Fourier transforming a vibration signal generated according to the application of the sweep signal. At this time, the arbitrary skin does not refer to the skin of a living person, but a skin tissue (eg, pig skin, artificial skin) close to the characteristics of each part of the human skin (eg, forehead, cheeks, chin, temple, etc.) say In this case, in order for the AI model to increase peak frequency inference accuracy, it is preferable that the resonance frequency is obtained for skin having various thicknesses, densities, and the like. The output data is a set of peak frequencies obtained by applying a sweep signal to an arbitrary skin and fast Fourier transforming a vibration signal passing through the arbitrary skin. Referring to FIG. 8 , a sweep signal is applied to an arbitrary surface of the skin (see 810 ), and vibration is sensed from the opposite side of the skin (see 820 ). In this case, the sensed vibration signal may be in the form of reference numeral 830 . Thereafter, the sensed vibration signal (eg, 830) is subjected to Fast Fourier Transform (FFT) to obtain a waveform representing the amplitude value (y-axis) according to the frequency (x-axis), and it is analyzed to obtain a peak frequency acquire Here, the peak frequency is a value at which the slope becomes 0 in the above-described waveform, and may be one or more. As described above, a one-to-one correspondence between the resonance frequency and the peak frequency obtained for any skin is established, and the resonance frequency and the peak frequency become input data and output data for AI model learning, respectively. At this time, in order to increase the inference accuracy of the AI model, it is desirable to build a learning data set of the resonance frequency and the peak frequency for skin having as many different characteristics (thickness, density, etc.) as possible. 9 shows a process of training an AI model using the constructed training data set. Various algorithms such as neural networks, multiple regression, and linear algebra can be applied for AI modeling.

When the resonance frequency of a specific skin area obtained in step S440 is set as input data to the AI model, the AI model infers a peak frequency from the output data according to the learning result. Referring to FIG. 10 , when the skin beauty device 100 is brought into contact with the forehead to obtain a resonance frequency, the AI model infers a peak frequency corresponding to the resonance frequency. In this case, the peak frequency is one or more frequencies expected to pass through the skin of the forehead region best. When using such an AI model, it is possible to solve the problem that it is impossible to sense a vibration signal by inserting a vibration sensing device inside a person's skin.

In step S460, the skin care device 10 determines whether the number of peak frequencies is plural, and if there are plural peak frequencies, normalizes the peak frequencies based on the peak frequency having the largest amplitude among the plurality of peak frequencies. For example, when the number of peak frequencies inferred in step S450 is 4, it may be expressed as in <Table 1>. In this case, values obtained by normalizing the values shown in <Table 1> may be expressed as shown in <Table 2>. Here, decibels (dB) for normalization are in the range of 0.5 to 1.0.

Hz 546 1031 1546 2062 dB 29 30 28 31

Hz 546 1031 1546 2062 Ratio 0.66 0.83 0.5 One

In step S480, the skin care device 10 generates a non-sinusoidal wave in which a plurality of sinusoidal signals corresponding to each of a plurality of peak frequencies are combined as a skin care signal. This process is well illustrated in FIG. 11 . 11 shows, for example, a final vibration waveform to be used for facial massage, measured by combining a sinusoidal wave corresponding to four peak frequencies. 11 (a) to 11 (d) shows signals of 546 Hz, 1031 Hz, 1546 Hz and 2062 Hz having different peak frequencies, and FIG. 11 (e) shows a non-sinusoidal signal combining them.

In step S460, the skin care device 10 determines whether the number of peak frequencies is plural, and when there is one peak frequency, generates a sine wave signal corresponding to the peak frequency as a beauty signal (S480).

On the other hand, even though it has been described that all components constituting the embodiment of the present invention are combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more. In addition, all of the components may be implemented as one independent hardware, but a part or all of each component is selectively combined to perform some or all of the combined functions in one or a plurality of hardware program modules It may be implemented as a computer program having Codes and code segments constituting the computer program can be easily inferred by those skilled in the art of the present invention. Such a computer program is stored in a computer-readable non-transitory computer readable media, read and executed by the computer, thereby implementing an embodiment of the present invention.

Here, the non-transitory readable recording medium refers to a medium that stores data semi-permanently and can be read by a device, not a medium that stores data for a short moment, such as a register, cache, memory, etc. . Specifically, the above-described programs may be provided by being stored in a non-transitory readable recording medium such as a CD, DVD, hard disk, Blu-ray disk, USB, memory card, ROM, and the like.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and it is common in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Various modifications may be made by those having the knowledge of, of course, and these modifications should not be individually understood from the technical spirit or perspective of the present invention.

110: head 111: protrusion
113: first element 115: second element
120: main body 130: vibrator
140: fixing member 150: battery unit
160: circuit board 170: cover
300: sensor unit 310: control unit
320: skin condition measurement unit 330: vibration generating unit
340: storage

Claims (10)

a body part opening one side and the other side, and including a step-shaped first support part and a second support part on an inner wall;
a vibration generating unit fastened to one side of the main body, supported by the first supporting unit, and accommodated in the main body, generating vibration to the user's skin; and
A sensor unit that is fastened to the other side of the main body, is supported by the second support, is accommodated in the main body, and senses the penetrating force of vibration to the skin;
A head device for a skin care device that includes. According to claim 1,
The vibration generating unit includes a vibrating speaker, and the sensor unit is a head device for a skin care device including a piezo sensor. 3. The method of claim 2,
The vibration generating unit is supported by the first support unit to fasten the vibrating speaker to one side and a fixing member for locating the battery unit at the other side. 4. The method of claim 3,
The main body portion, the head device for a skin care device further comprising a third support portion on the inner wall for accommodating the circuit board on one side of the battery portion. 3. The method of claim 2,
The sensor unit, a thermoelectric element for transferring heat to the skin; head device for a skin care device further comprising a. Opening one side and the other side, forming a main body including a step-shaped first support and a second support on the inner wall;
fastening a vibration generating unit that generates vibration to the user's skin to one side of the main body, supporting it by the first supporting unit, and accommodating it in the main body; and
Fastening the sensor unit for sensing the penetrating force of the vibration to the skin to the other side of the body part, supporting it by the second support part, and accommodating it inside the body part;
A method of manufacturing a head device for a skin care device comprising a. 7. The method of claim 6,
A method of manufacturing a head device for a skin care device using a vibrating speaker as the vibration generating unit and using a piezo sensor as the sensor unit. 8. The method of claim 7,
The step of receiving the vibration generating unit is,
fastening the vibrating speaker to one side of a fixing member supported by the first supporting part; and
Positioning the battery unit on the other side of the fixing member;
A method of manufacturing a head device for a skin care device comprising a. 9. The method of claim 8,
Receiving a circuit board supported by a third support portion formed on one side of the battery portion on the inner wall of the body portion; manufacturing method of a head device for a skin care device further comprising a. 8. The method of claim 7,
The step of accommodating the sensor unit,
A method of manufacturing a head device for a skin care device containing a thermoelectric element for transferring heat to the skin.

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