KR20090011993A - Grounding style ion transfer current generating method and skin beauty apparatus using it - Google Patents

Abstract

A skin beauty apparatus is provided to archive supersonic function and ion-transmission function by using the grounded ionization current generation method and an ultrasonic oscillator. A skin beauty apparatus comprises: an MCU(10) controlling the whole operation of the skin beauty apparatus; a supersonic output part(18) authorizing the driving force to the ultrasonic oscillator by control of MCU; an ultrasonic oscillator(19) bringing the supersonic vibration and ionization current coming in contact with the skin; a square-wave voltage output unit(12) generating the square-wave voltage by control of MCU; a grounded ionization voltaic generating part(14); an earth grip(20) which electrically connects the ionization current to the human body; and a function changeover switch(11) inputting the operation command to MCU.

Description

Grounding style ion transfer current generating method and Skin beauty apparatus using it}

The present invention

It relates to a grounding type ion current generation method and a skin care device using the same,

As a method for outputting an iontophoretic current to an ultrasonic vibrator with an iontophoretic function,

The skin contact part of the ultrasonic vibrator is electrically connected to the ground electrode of the piezoelectric element so that it is grounded at zero (0 volt) potential, and selectively outputs (+) or (-) ion current through the earth grip. The present invention relates to a connection structure and a skin care device capable of generating an iontophoretic function regardless of the operation of ultrasonic waves by generating a special grounding type iontophoretic current to pass through a skin contact area.

Ultrasound refers to sound vibrations above 20KHz. As a definition of ultrasonic waves used in technical applications, sound waves that are not intended to be heard are sometimes referred to as ultrasonic waves. The ultrasonic wave is converted into physical vibration energy and brought into contact with the skin to generate a cosmetic effect. The iontophoresis is a water-soluble solution that is difficult to penetrate the skin by using the principle of chemical reaction caused by negative (-) and positive (+) properties when passing through the skin containing a certain amount of moisture by using minute DC or pulse current. It absorbs the active ingredients of the agent into the skin or, conversely, has the effect of discharging waste products from the skin out of the skin. This principle is applied to skin care devices.

Among the skin care devices, there are an ultrasonic beauty device configured as a means for removing dead skin or massaging the skin, and an iontophoretic device as a means for infiltrating active ingredients into the skin or discharging waste products. In some cases, a skin care device configured to perform both an ultrasound function and an iontophoretic function is widely used for skin care.

The skin care device uses an ultrasonic vibrator that combines a piezoelectric element and a diaphragm to generate physical ultrasonic vibrations. The ultrasonic vibrators vary in appearance depending on the purpose of use, but are equivalent in principle of using ultrasonic vibrations. can do.

In the construction of a skin care device that combines an ultrasonic function and an iontophoretic function, in general, a method of forming an electrical passage so as to apply an ion current from the inside to a diaphragm (skin contact) of an ultrasonic vibrator is common. For this method, a method of forming an electrically independent skin contact (vibration plate) using an electrically insulating substrate between the ground electrode of the piezoelectric element and the vibration plate has been required.

In this method, the vibration energy generated from the piezoelectric element is transmitted to the diaphragm, and the attenuation effect due to passing through the metal and nonmetal layers cannot be excluded, and the attenuated energy causes stress on the electrically insulating substrate, which causes the vibration plate from the piezoelectric element. It is true that the result of breakage of the attachment part between them is common.

In general, a method of outputting an iontophoretic current to the skin generates a direct current or pulse voltage to generate the electrically independent skin contact part (+), the earth grip side (-), or the skin contact part (-), and the earth grip. The side is a method of alternately outputting a positive current, and neither of the output currents can be connected in common with the ground electrode of the piezoelectric element.

In order to solve this problem, the ultrasonic vibrator using an electrically insulating substrate is described in Japanese Patent PCT / JP 98/01820, and in Korean patents 10-2005-0023462 and 10-2006-0013476, an exfoliating skin beauty device using the same is used. have. Such a conventional technology requires a plurality of piezoelectric elements to compensate for the amount of attenuation of ultrasonic vibrations, and thus, a manufacturing cost increase or driving stability cannot be considered.

In addition, domestic patents 20-2003-0019120 and 20-2004-0015333 of the conventional ultrasonic massage skin care device also show a constituent means for iontophoretic output by using an electrically insulating substrate, and ultrasonic waves without using an electrically insulating substrate. There is no preferred way to combine output and iontophoresis. The electrically insulating substrate is often used an epoxy substrate or the like.

The piezoelectric element, which is a component of the ultrasonic vibrator, changes its resonant frequency according to the change of ambient temperature or the load change during use. In addition, due to different resonance frequency error ranges for each piezoelectric element, the electrical driving impedance is also changed, and the ultrasonic output is deteriorated. In the conventional ultrasonic beauty device, the driving frequency is generated by the positive feedback oscillation method using the resonant frequency of the piezoelectric element, so that the resonant frequency is slightly changed by driving the ultrasonic vibrator. In some cases, the oscillation frequency of the piezoelectric element causes a decrease in the ultrasonic vibration output, but there is no proper way to solve this problem.

In particular, the skin care device for exfoliation using the BLT type ultrasonic vibrator is too large to expect a smooth operation because the element that the ultrasonic power is lowered is relatively large compared to other ultrasonic vibrators.

The first problem to be solved in the present invention,

The present invention is to construct a unique skin care device that can combine the ultrasonic and iontophoretic function by using the ultrasonic vibrator that does not form the electrically insulating substrate and the ground-type iontophoretic current generation method.

A second problem is to provide a skin care device that can use an ultrasonic wave oscillator of the same type that does not form an electrically insulating substrate through a ground type ion induction current generation method.

As a third object of the present invention , there is provided a skin care device that minimizes a decrease in ultrasonic vibration output in response to resonance frequency variation characteristics or resonance frequency errors caused by ambient temperature or load fluctuation of an ultrasonic vibrator.

As a means for solving the above first problem ,

MCU for controlling the overall operation of the skin care device,

Power supply unit for supplying driving power under the control of the MCU,

Ultrasonic output unit for applying the ultrasonic driving power to the ultrasonic vibrator under the control of the MCU,

An ultrasonic vibrator which electrically connects the ground electrode of the piezoelectric element and the diaphragm [skin contact part] to contact the skin with ultrasonic vibration and iontophoretic current,

Earth grip connected to the ground type ion induction current generator to electrically connect the ion induction current to the human body,

According to the control of the MCU, the ground type ion induction current generating unit which causes one pole which outputs the ion induction current to be grounded to zero (0 volt) potential and selectively alternately outputs the ion current polarity of the other pole,

A square wave voltage output unit for applying a square wave voltage to the ground type ion current introducing unit under control of a MCU;

It consists of a function changeover switch that inputs an operation command to the MCU.

The "ground type ion current introduction unit" is a component unit for performing a ground type ion current introduction method, a phase control means using a microcontroller unit (MCU), and a switching element for interrupting current. Or FETs, photocouplers, high speed relays, logic gates, etc.).

The frequency required for the iontophoresis or the frequency for driving the ultrasonic vibrator may be different depending on the purpose of use of the device, and is not particularly limited.

The "ultrasound output unit" is a method of amplifying by applying a PWM frequency output from the MCU or

By using the resonant frequency of the ultrasonic vibrator can be output by forward oscillation in the ultrasonic output unit.

In addition, as a means for solving the second problem ,

Ultrasonic vibrator having a blade-type diaphragm (skin contact) formed and attaching a piezoelectric element to the surface of the auxiliary member combined with the diaphragm, or

BLT (Bolt-clamped Langevin-type Transducer) type ultrasonic vibrator with blade type diaphragm (skin contact), or

An ultrasonic vibrator having a disk or conical diaphragm [skin contact] and attaching a piezoelectric element to the inner surface of the diaphragm,

As shown in FIG. 2, the ground type ion induction current is generated so that the ion current can be applied to the diaphragm by using an ultrasonic vibrator that does not use an electrically insulating substrate to electrically connect the diaphragm [skin contact part] and the ground electrode of the piezoelectric element. .

The blade, the diaphragm member or the auxiliary member for the configuration of the ultrasonic vibrator of the first to the second object is preferably made of stainless steel (aluminum), aluminum (aluminum) or titanium (titanium), In the solution, the type or processing of the member is not limited, and the size or thickness is not limited to fluidity depending on the vibration frequency of the piezoelectric element used.

The BLT (Blt-clamped Langevin-type Transducer) type ultrasonic vibrator is integrally formed by fastening one or more piezoelectric elements, a metallic auxiliary member, and a diaphragm with a bolt, and forming a blade as a exfoliation means. It is composed.

Ultrasonic vibrator in which the disk-shaped or conical diaphragm [skin contact part] is formed and attaches a piezoelectric element to the inner surface of the diaphragm can be configured in various forms according to the skin contact form. The form of the [skin contact part] is not limited.

As a means for solving the third problem ,

MCU or frequency oscillator for generating the driving frequency of the ultrasonic vibrator,

A pulse width modulation (PWM) frequency synchronization unit synchronized with the driving frequency;

A frequency spreading control unit for spreading the synchronized driving frequency;

An ultrasonic output unit for supplying the driving frequency to an ultrasonic vibrator,

MCU for controlling the frequency diffusion control unit and the ultrasonic output unit;

And a power supply unit for supplying power.

The generation of the ultrasonic oscillator driving frequency may use the PWM function of the MCU.

The PWM frequency synchronizing unit may be configured to synchronize with the driving frequency of the ultrasonic vibrator using a PLL (Phase Locked Loop) device.

The frequency spreading control unit may be configured to generate a triangular wave control voltage by integrating a square wave voltage output from the MCU 10 and to control it using a voltage controlled oscillator (VCO) function of a PLL element.

The above solution is suitable for the construction of an exfoliating skin care device using a BLT (Bolt-clamped Langevin-type Transducer) type ultrasonic vibrator having a large resonance frequency variation. For skin care devices composed of ultrasonic vibrators with small resonant frequency fluctuations, a PWM frequency is generated from the MCU and applied directly to the ultrasonic output unit.

The ultrasonic transducer (Ultrasonic Vibrator ) is a piezoelectric element and a diaphragm member that are combined with ultrasonic vibration means . It is defined as necessary for skin care devices for keratin or ultrasonic massage.

By implementing the ground-type ion induction current generation method as described above, it is possible to construct a simple ultrasonic vibrator from which the electric insulation board is removed, and the quantity of use of the piezoelectric element is also reduced, thereby realizing significant cost saving effect and high efficiency of skin beauty device. Will be.

In addition, the method of generating the ground-type ion induction current can be applied irrespective of the structure of the ultrasonic vibrator in the skin care device using the same principle of ultrasonic vibration, so that the ions may be applied to the skin care device for exfoliation or the ultrasonic massage skin care device. It is a proper construction method for parallel introduction functions.

In addition, according to the method of diffusion control of the driving frequency of the piezoelectric element, a stable ultrasonic vibration output is maintained in response to the change in the ambient temperature of the ultrasonic vibrator, the use load or the resonance frequency variation due to the resonance frequency error. In addition to the skin care device has been implemented a stable skin care device.

In the following description of embodiments of the present invention, it is well known to those skilled in the art such as known functions or known configurations that are not related to the structural features of the present invention. In principle, it is omitted.

The following embodiment is to configure a characteristic skin care device capable of performing the iontophoretic function through the ultrasonic vibrator that does not form the electrically insulating substrate and the ground-type iontophoretic current generation method.

Figure 1 shows a basic configuration as an embodiment of a ground-type ion current introduction method and a skin care device using the same according to the present invention.

MCU 10 for controlling the overall operation of the skin care device,

Power supply unit 16 for supplying the total driving electricity of the skin care device under the control of the MCU (10),

Ultrasonic output unit 18 for generating an ultrasonic drive power under the control of MCU 10 to apply to the ultrasonic vibrator,

An ultrasonic vibrator 19 which electrically connects the ground electrode of the piezoelectric element 30 and the diaphragm (skin contact part) 33 to bring the ultrasonic vibration and the iontophoretic current into contact with the skin,

A square wave voltage output unit 12 generating square wave voltages under the control of the MCU 10 and applying them to the ground-type ion induction current generating unit 14;

Under the control of the MCU 10, a ground type ion induction current generator 14 which causes one pole to output the ion induction current to be grounded at zero potential and selectively alternately outputs the ion current polarity of the other pole. );

An earth grip 20 connected to the ground type ion induction current generator 14 to electrically connect the ion induction current to the human body;

A function switching switch 11 for inputting an operation command to the MCU; is configured.

2 shows a configuration of an ultrasonic vibrator 19 according to the present invention.

The metallic auxiliary member 32 is attached to a predetermined position on one surface or both sides of the flat metallic diaphragm 33, and one or more piezoelectric elements 30 are attached to the surface of the auxiliary member 32 by separating the upper and lower sides thereof. The notation of the dotted line indicates the position where it can be selectively glued. The ground electrode 31 and the diaphragm (skin contact part) 33 of the piezoelectric element 30 are electrically connected through the construction process. For more reliable electrical connection it is good to connect the ground electrode 31 and the diaphragm 33 by electric wire.

3 is a block diagram showing the characteristics of the ground-type ion induction current generating unit 14 according to the present invention.

In order to assist in a specific understanding, "<conventional diagram for iontophoresis>" has been shown to be included.

The square wave voltage output unit 12 is configured to amplify a frequency and a proper voltage required for ion introduction by the control of the MCU 10 and apply it to the ground type ion introduction current generation unit 14.

The ground type ion induction current generating unit 14 is synchronized with the phase of the square wave voltage input from the square wave voltage output unit 12 by the MCU 10 to the positive phase (0 °) or the reversed phase (180 °). Generates a switching signal and drives the switching element. The switching signal of the positive phase or the inverted phase is selected according to the iontophoretic function selection command of the function switching switch 11.

The operation timing of the switching element is based on the MCU 10 control routine, and when the phase of the input square wave voltage is on (+), the output side becomes a relatively negative potential when the switching element is turned on to the ground side. When the switching element is turned on to the ground side at the negative point, the output side becomes a relatively positive potential. Therefore, based on the diaphragm [skin contact] of the ultrasonic vibrator or ground which is zero (0 Volt) potential, the voltage on the output side is "(+) output" or "(-) output" or "(+) and (-) Output that intersects "is optionally output. Thus, the earth grip 20 electrically connects the outputs to the human body so that iontophoretic current can flow through the skin contact.

A part of the diaphragm is a skin contact part for locally supplying ion current to the skin, and the diaphragm {skin contact part 33) is a ground type ion introduction current generating part (eg, through the ground electrode 31 of the piezoelectric element 30). 14 is electrically connected to ground 15 and maintained at zero volt potential. Therefore, when the potential of the earth grip 20 is "(+) output" centering on the zero potential of the diaphragm [skin contact part] 33, the diaphragm 33 is relatively equal to the (-) potential. When the voltage of the earth grip 20 is "(-) output", the diaphragm 33 is able to flow an iontophoretic current to the human body by the principle of being equal to the (+) potential.

In the present invention, in spite of the structure of the ultrasonic vibrator 19 which does not electrically insulate between the piezoelectric element 30 and the diaphragm 33 in accordance with the ground-type ion induction current generation method as described above, it selectively replaces the phase of the ion current. To enable output.

Briefly describing the &quot; conventional diagram for ion introduction &quot;, an electric insulating substrate is inserted to electrically insulate between the piezoelectric element and the diaphragm. Therefore, the method of applying ion current independently to a "vibration plate" and a "hand contact part" is shown.

Therefore, the output of current for iontophoresis is composed of the cross-output method, not the output method centered on the ground potential.

The above embodiments are not limited in appearance and classification of the skin care device in the scope of application.

In the following embodiment, an electrically insulating substrate is formed through a grounding type ion induction current generating method.UnsungAn object of the present invention is to provide a skin care device that can use an equivalent type of ultrasonic vibrator.

Figure 4 shows an embodiment with an equivalent ultrasonic vibrator that can be used through the ground-type ion induction current generation method according to the present invention.

In the two electrodes for outputting the ion current of the ground type ion induction current generating unit 14 shown, one electrode is grounded and maintained at zero volt potential. The grounded electrodes 31 'of the equivalent ultrasonic vibrators 19a, 19b, and 19c are electrically connected to the ground 15 so as to be diaphragm (skin contact) 33a, 33b, 33c. It is possible to selectively output the potential of the earth grip 20 to the center. 4, shown in detail

<Embodiment 4-1> is a blade type ultrasonic vibrator 19a having a structure similar to that of the ultrasonic vibrator 19, and the ground 15 of the ground type ion introduction portion generating portion 14 is connected to the ground electrode 31 '. Is electrically connected to the Also,

<Example 4-2> is a BLT type ultrasonic vibrator 19b, and is electrically connected to the ground 15 of the ground type ion introduction portion generation unit 14 on the ground electrode 31 ',

<Embodiment 4-3> is a disc shaped (or conical) ultrasonic vibrator 19c, and is electrically connected to the ground 15 of the ground type ion introduction portion generation unit 14 at the ground electrode 31 '.

Like the ultrasonic vibrator of the above embodiments <4-1 to 4-3> If no artificial insulation is attempted at all times, the ground electrode 31 'of the piezoelectric element 30' and the diaphragm (skin contact part) 33a, 33b, and 33c are maintained in electrical conduction so that the ground type ion It is possible to configure a skin care device that can use the introduction portion generating unit (14).

The present invention using the electrically common membership as in the above embodiments,

Ultrasonic vibrator in which the diaphragm is removed and the ground electrode of the piezoelectric element is replaced with a diaphragm [skin contact], or

Ultrasonic vibrator using a member that can electrically connect the diaphragm [skin contact part] to the ground electrode of the piezoelectric element through a conduction action by a conductive material or moisture, or

By means of any one of the ultrasonic vibrator, electrically connected to the diaphragm [skin contact] and the ground electrode of the piezoelectric element through means for electrical connection

The skin care device using the ground type ion induction current generating unit 14 is provided.

The above embodiment is a method of providing a skin care device using a grounding type ion introduction current generation method, and does not limit the external shape of the ultrasonic vibrator or the skin contact part.

The following embodiments are the characteristics of the resonance frequency change according to the ambient temperature or load variation of the ultrasonic vibrator Resonant frequency  In accordance with the error to provide a skin care device to minimize the decrease in the ultrasonic vibration output.

5 shows a characteristic change of the piezoelectric element according to the present invention.

In the piezoelectric element 30, the driving impedance is also changed according to the change in the resonance frequency according to the influence of the ambient temperature or the load, and the change in the driving impedance causes the decrease in the ultrasonic output. In order to solve this problem, according to the configuration of FIG. 1, the MCU 10 generates a driving frequency suitable for the piezoelectric element 30 through PWM frequency setting and applies the PWM frequency to the synchronization unit 17. Synchronize the oscillation frequency.

The frequency spreading control unit 13 integrates the square wave voltage of the control frequency generated from the MCU 10 and generates a triangular waveform control voltage. The generated control voltage is again applied to the VCO of the PWM frequency synchronizer 17 so that the PLL oscillation frequency is spread to be adjusted to a constant voltage. The variation range of the spreading frequency is determined according to the magnitude of the VCO control voltage. The change width setting is set through a method of adjusting the magnitude of the control voltage so as to exceed the expected variation width (+,-) around the intrinsic resonance frequency of the piezoelectric element 30 and at the same time, the MCU 10 to have a constant change period. It is set by varying the control frequency.

Therefore, the diffusion frequency applied to the ultrasonic output unit 18 coincides with the actual resonant frequency of the piezoelectric element twice in one change cycle and decreases the output of the ultrasonic vibration due to the variation of the resonance frequency of the ultrasonic element. It can be minimized.

Using the operating principle according to the above embodiment, it is also possible to prevent the reduction of the ultrasonic vibration output due to the resonance frequency error of the plurality of ultrasonic vibrators.

The above embodiment does not limit the shape of the ultrasonic vibrator in the scope of application.

It is noted that the above embodiments do not limit the scope of the claims.

The skin beauty device and the composition method using the ultrasonic and iontophoretic functions are generally the same, but industrially, there are a large number of products with various external structures and features. In particular, the demand for skin care devices is continuously increasing internationally, and thus, competition in the export market is increasing, especially in the manufacturing and sales industries. The skin care device and composition method of the present invention are not only to reduce the manufacturing cost but also to improve the cosmetic effect and bring about the stability of the product, and at the same time as the conventional configuration method of the skin care device including the equivalent ultrasonic and ion functions. The differentiated method is to produce competitive products and to increase the competitiveness of foreign exports.

1 is a basic configuration of a method of generating a ground-type ion induction current and a skin care device using the same according to the present invention.

2 is a cross-sectional view showing the configuration of an ultrasonic vibrator according to the present invention.

Figure 3 is a block diagram showing the characteristics of the ground-type ion induction current generating method according to the present invention.

4 is a block diagram showing the configuration of an equivalent ultrasonic vibrator that can be used through the ground-type ion induction current generation method according to the present invention.

5 is a characteristic diagram showing a characteristic change of a piezoelectric element according to the present invention;

<Code Description of Main Parts of Drawing>

10: MCU

11: function selector switch

12: square wave voltage output unit

13: Frequency spread controller

14: ground type ion current input unit

15: Ground

16: power supply

17: PWM frequency synchronizer

18: ultrasonic output unit

19, 19a, 19b, 19c: ultrasonic vibrators

20: Earth grip

30, 30 ': piezoelectric element

31, 31 ': grounding electrode

32, 32a: auxiliary member

33, 33a, 33b, 33c: Vibration plate [skin contact part]

Claims (6)

MCU for controlling the overall operation of the skin care device; A function switch for inputting an operation command to the MCU; A power supply unit supplying driving electric power for the entire skin care device according to the MCU control; An ultrasonic output unit generating ultrasonic driving power according to the MCU control and applying the ultrasonic driving power to the ultrasonic vibrator; An earth grip electrically connected to a ground type ion induction current generator and electrically connecting the output of the ion induction current to a human body; An ultrasonic vibrator having a structure in which a ground electrode and a diaphragm [skin contact] of the piezoelectric element are electrically connected; A square wave voltage output unit for generating a square wave voltage according to the MCU control and applying the square wave voltage to the ground type ion induction current generator; Under the control of the MCU, a ground type ion induction current generator which performs an ion induction function by causing one pole that outputs the ion induction current to be grounded to zero (0 volt) potential and selectively alternately outputs the ion current polarity of the other pole. Skin care device, characterized in that consisting of. The method of claim 1, The ground type ion introduction current generating unit, Crossing the "(+) output" or "(-) output" or "(+) and (-) with reference to the vibration plate of the ultrasonic vibrator (skin contact) or the ground of the electrical circuit at zero (0 Volt) potential And a current for the iontophoretic function of " output &quot; is selectively outputted. The method of claim 1, The ultrasonic vibrator attaches one or more auxiliary members on one or both sides at a predetermined position of a blade-type diaphragm (skin contact part), attaches one or more piezoelectric elements to the surface of the auxiliary member, and connects the ground electrode of the piezoelectric element. A skin care device, characterized in that consisting of an ultrasonic vibrator (19) having a means electrically connected between the diaphragm [skin contact]. The method of claim 1, The skin care device, Ultrasonic vibrator 19, in which one or more auxiliary members are attached to one or both sides at a predetermined position of a blade-type diaphragm [skin contact part] and one or more piezoelectric elements are attached to the surface of the auxiliary member, thereby excluding an electrical insulation member. Characterized in that consisting of, the skin care device. The skin care device using the "grounded ion current generation method" of claim 2, In the means for providing an ultrasonic vibrator for performing the iontophoretic function, An ultrasonic vibrator having a diaphragm [skin contact part] electrically connected to the ground electrode of the piezoelectric element through means for electrical connection; or, An ultrasonic vibrator having a BLT (bolt-clamped Langevin-type Transducer) type and having a diaphragm (skin contact part) electrically connected to a ground electrode of a piezoelectric element; or, An ultrasonic vibrator in which one surface of the piezoelectric element is replaced with a diaphragm [skin contact]; Alternatively, an ultrasonic vibrator configured to electrically connect the diaphragm [skin contact] to the ground electrode of the piezoelectric element as the conductive medium flows into the diaphragm [skin contact] from time to time; Using either "(+) Output" or "(-) output" or "output intersecting (+) and (-)" with reference to the ground of the diaphragm [skin contact] or the electrical circuit at which zero (0 Volt) potential is applied Skin care device, characterized in that it comprises a grounding type ion-induced current generation unit 14 for selectively outputting a current for the iontophoretic function of the. The method according to claim 1 or 4 or 5, Skin care device, Means for spreading the driving frequency of the ultrasonic vibrator in response to a decrease in the ultrasonic output due to the resonance frequency error or variation of the ultrasonic vibrator, PWM frequency synchronization unit; A frequency spreading control unit; Skin care device further comprising a.

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