KR20190076458A - Supersonic waves cosmetic treatment apparatus - Google Patents

Abstract

The present invention relates to an ultrasonic beauty device. The present invention comprises: a DC/DC converter boosting a DC voltage transmitted from a battery to a DC voltage of a predetermined size; a control unit including a microcomputer for outputting a preset resonance frequency range, and a switching unit for switching the resonance frequency range output from the microcomputer; a transformer having the DC voltage boosted by the DC/DC converter into a primary voltage as an input signal through a switching action of the switching unit with the resonance frequency range from the microcomputer, boosting the primary voltage, and transforming the same into a secondary side output voltage supplied to an ultrasonic vibrator; and an oscillator assembly having an amplifying plate or a resonating member formed on one or both surfaces of a vibration plate, wherein the ultrasonic vibrator is formed on one surface of the vibration plate on which the amplifying plate or the resonating member is formed. According to the present invention, it is possible to form a beauty device exhibiting a predetermined high output, and at the same time, simplify a manufacturing process of the beauty device to improve productivity and reduce manufacturing costs.

Description

{SUPERSONIC WAVES COSMETIC TREATMENT APPARATUS}

The present invention relates to an ultrasonic cosmetic device, and more particularly, to a cosmetic device having a predetermined high output through circuit means of an ultrasonic cosmetic device, and at the same time, the manufacturing process of the cosmetic device is simplified, And an ultrasonic cosmetic device capable of reducing manufacturing cost.

With recent improvements in living standards, modern people are paying more attention to maintaining a healthy body, as well as maintaining healthy skin. Therefore, there is a growing interest in improving skin beauty and preventing skin aging.

As the largest organ of the human body, which occupies about 16% of the total human body volume, the skin is directly contacted with the external environment, and it is important to protect the human body from many harmful factors that intrude into the human body such as temperature, humidity and ultraviolet rays. It plays a protective role. However, with age, skin cells are damaged due to various pollutants, strong ultraviolet rays, stress and nutritional deficiency, cell proliferation is not properly performed, and wrinkles, elasticity loss, and keratinization occur in the skin.

Skin aging is divided into natural aging (or endogenous aging) and extrinsic aging. Natural aging is affected by genetic factors, so that it is difficult to control it, whereas extrinsic aging is influenced by environmental factors. It is easy. Exogenous aging factors are known to be ultraviolet rays, reactive oxygen species and stress.

Recently, methods for improving extrinsic aging have been actively researched, and efforts are being made to identify substances for preventing or improving aging. However, most of these substances have problems in terms of safety and stability, and those having excellent safety and stability have problems such as a weak clinical efficacy effect and a prolonged period of use required for visible clinical results. Accordingly, physical methods such as various beauty devices have been researched to solve the problems of these materials and to enhance the effects of these materials.

Among these beauty devices, the ultrasonic cosmetic device generates a resonance frequency of a preset ultrasonic oscillator by the CPU and amplifies the ultrasonic oscillator through the ultrasonic output section to drive the ultrasonic oscillator. In this case, there is a problem that the resonance impedance value of the piezoelectric element is increased and the ultrasonic output efficiency is relatively lowered due to no consideration of the technology relating to the resonance impedance matching of the piezoelectric element in the ultrasonic output unit. Furthermore, in portable ultrasound beauty devices using a battery, there is a disadvantage in that the efficiency of ultrasonic vibration is significantly lowered due to a situation in which it is difficult to supply large power due to a low supply voltage.

Also, the number of ultrasonic transducers has a direct relation to the size of the output of the cosmetic device. That is, if the number of the ultrasonic transducers is small, the physical displacements produced by the transducers are small. On the contrary, if the number of ultrasonic transducers is large, the generated physical displacement becomes large. That is, there is a circuit element and a physical element related to the output of the ultrasonic cosmetic device. However, the means for improving the circuit elements cause cost increases, and the provision of more ultrasonic transducers also leads to problems such as a rise in the raw material and an increase in the size (size) of the portable device.

In addition, since the resonance frequency characteristics of the vibration piezoelectric devices are different from each other for each beauty device to be manufactured, the ultrasonic cosmetic device needs to precisely set the resonance frequency of the vibration piezoelectric device for each product in the manufacturing process Resulting in deterioration of product productivity and manufacturing cost.

Accordingly, there is a demand for a technology that can improve the output of the portable beauty device and can continuously reduce the size and manufacturing cost.

Korean Patent Laid-Open No. 10-2016-0148632 (Publication date December 26, 2016) Korean Patent Laid-Open No. 10-2012-0129274 (Published Nov. 28, 2012)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a portable beauty treatment device capable of manufacturing a beauty treatment device which exhibits a predetermined high output while simplifying a manufacturing process of the beauty treatment device, thereby improving productivity and reducing manufacturing costs.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a portable beauty device comprising: a DC / DC converter for boosting a DC voltage transmitted from a battery to a DC voltage of a predetermined magnitude; a microcomputer for outputting a predetermined resonance frequency range; A DC / DC converter for converting a DC voltage boosted by the DC / DC converter into a primary voltage as an input signal through a switching operation of the switching unit together with a resonance frequency range from the microcomputer, And an amplifying plate or a resonating member is formed on one surface or both surfaces of a transformer and a diaphragm for transforming the output voltage of the transformer to an output voltage of a secondary side to be supplied to the ultrasonic vibrator and the ultrasonic vibrator is formed on one surface of the diaphragm, Which includes a vibrator assembly It is configured.

Wherein the DC / DC converter includes at least three resistors connected in parallel to an output terminal and a feedback voltage terminal, and two voltage switching elements respectively provided after two selected ones of the three resistors, Can be controlled.

The switching unit may include at least two switching elements to generate a resonance frequency in a resonance frequency range output from the microcomputer.

Two ultrasonic transducers may be formed on one surface of the diaphragm.

The DC / DC converter may include a power induction coil.

The vibrator assembly may include an insulating member disposed between the vibrating plate and the amplifying plate or the resonating member.

One end of the diaphragm may have a bent surface at a certain angle.

The ultrasonic cosmetic device according to the present invention can realize a cosmetic device exhibiting a predetermined high output and simplify the manufacturing process of the cosmetic device, thereby improving the productivity and reducing the manufacturing cost.

1 is a schematic diagram showing a schematic circuit configuration of an ultrasonic cosmetic device according to an embodiment of the present invention.
2 is a schematic view showing an overall configuration of an ultrasound beauty apparatus according to an embodiment of the present invention.
3 is a schematic view showing a side view of an ultrasound beauty apparatus according to an embodiment of the present invention.
FIG. 4 is a schematic view showing a diaphragm bent surface of an ultrasonic cosmetic device according to an embodiment of the present invention.
5 is a schematic diagram illustrating a circuit configuration for implementing a half bridge resonant transforming method of a transformer of an ultrasonic cosmetic device according to an embodiment of the present invention.
FIG. 6 is a schematic diagram showing a circuit configuration for controlling the magnitude of a DC voltage by a DC / DC converter of an ultrasonic cosmetic device according to an embodiment of the present invention.
7 is a schematic view showing a circuit module of an ultrasonic cosmetic device according to an embodiment of the present invention.
8 is a schematic diagram showing an equivalent circuit diagram of a vibrator in an ultrasonic cosmetic device according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 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. In the following description of the embodiments of the present invention, specific values are only examples.

FIG. 1 is a schematic diagram showing a schematic circuit configuration of an ultrasonic cosmetic device according to an embodiment of the present invention. FIG. 2 is a schematic view showing an overall configuration of an ultrasonic cosmetic device according to an embodiment of the present invention And FIG. 3 is a schematic view showing a side view of the ultrasonic cosmetic device according to an embodiment of the present invention.

FIG. 4 is a schematic view showing a diaphragm folded surface of an ultrasonic cosmetic device according to an embodiment of the present invention, and FIG. 5 is a schematic view illustrating a half bridge resonant transforming method of a transformer of an ultrasonic cosmetic device according to an embodiment of the present invention. 6 is a schematic diagram illustrating a circuit configuration for controlling the magnitude of the DC voltage of the DC / DC converter of the ultrasonic cosmetic device according to the embodiment of the present invention .

FIG. 7 is a schematic view showing a circuit module of an ultrasonic cosmetic device according to an embodiment of the present invention, and FIG. 8 is a schematic diagram showing an equivalent circuit diagram of a vibrator in the ultrasonic cosmetic device according to an embodiment of the present invention Respectively.

Referring to these drawings, the ultrasonic vibration device 100 according to the present invention includes a DC / DC converter 210 for boosting a DC voltage delivered from a battery to a DC voltage of a predetermined magnitude, A control unit 220 including a switching unit 222 for switching a resonance frequency range output from the microcomputer 221 and the microcomputer 221. The control unit 220 controls the DC voltage boosted through the DC / And the output voltage of the secondary side which supplies the voltage to the ultrasonic transducers 140, 150, 160, and 170 by boosting the primary side voltage as an input signal through the switching action of the switching unit 222 together with the resonance frequency range The amplifying plate 120 or the resonating member is formed on one surface or both surfaces of the diaphragm 110 and the diaphragm 120 on which the resonating member is formed. Consists in comprising a vibrator assembly of the transducer (140, 150, 160, 170) is formed.

That is, the ultrasonic vibration device 100 according to the present invention sets the resonance frequency for oscillating the ultrasonic vibrators 140, 150, 160, and 170 to a constant resonance frequency range having the minimum frequency and the maximum frequency, The microcomputer 221 and the switching unit 222 through the microcomputer 221 and the switching unit 222 to transmit the input signal of the resonance frequency range continuously varying in the minimum frequency and the maximum frequency range to the transformer 230 to vibrate the ultrasonic vibrator It is possible to smoothly and stably drive the vibrators 140, 150, 160, and 170 having various resonance frequency characteristics in which the resonance frequencies are not equal to each other but are slightly different in a certain range There are advantages.

Accordingly, in the manufacturing process of the ultrasonic cosmetic device, it is necessary to adjust the physical properties and specifications of the vibrator so that the resonance frequency, which may be different for each product, 140, 150, 160, and 170 and the ultrasonic hairdressing apparatus 100 including the ultrasonic hairdressing apparatus 100 can be conveniently manufactured at once, thereby improving the productivity of the ultrasonic hairdressing apparatus and reducing manufacturing costs.

More specifically, the driving process of the ultrasonic cosmetic device of the present invention will be described with reference to a circuit diagram of FIG. 1. When a frequency in a resonance frequency range of the oscillator is input to the GATE driver for driving the FET through the MCU, The GATE driver drives the switching elements Q1 and Q2 and generates the resonance frequency with the combination of the inductance value of the transformer 230 and the CAP1 // CAP2 so that the primary and secondary sides of the transformer 230 A voltage boosted by the turn ratio is applied to the vibrator so that the vibrator can always generate vibration in a minimum frequency and a maximum frequency range without setting a special frequency in any element having the resonance frequency range characteristic corresponding to the resonance frequency range.

At this time, the resonance frequency range may be set to preferably 27 to 33 kHz so that the portable ultrasonic cosmetic device 100 can efficiently drive the vibrator. The switching unit 222 preferably includes at least two switching elements Q1 and Q2 to generate a resonance frequency in a resonance frequency range output from the microcomputer 221. [

The DC / DC converter 210 includes at least three resistors connected in parallel with an output terminal and a feedback voltage terminal, and two voltage switching elements 211 respectively provided after two selected resistors of the three resistors. The magnitude of the DC voltage can be controlled by on-off switching. 6, the DC / DC converter 210 includes four resistors R1, R2, R3, and R4 including at least three resistors connected in parallel to an output terminal and a feedback voltage terminal, for example, R4 may be connected to the feedback voltage terminal. If the resistors R1 and R2 are initially set, the voltage switching elements 211 of Q1 and Q2 may be turned on or off, Off switching operation, the magnitude of the DC voltage can be conveniently and stably controlled using the principle that the combined resistance value of R1, R3, and R4 fluctuates.

Here, the on-off switching driving of the voltage switching device 211 can be implemented by driving the portable ultrasonic beauty device 100 and configuring a circuit so that the magnitude of the DC voltage can be automatically increased in a digital manner And may be implemented by configuring an analog circuit so that the user can arbitrarily select whether the on-off switching of the voltage switching device 211 is driven or a method thereof.

The ultrasonic cosmetic device 100 may further include a resonant frequency matching circuit 240 at an output terminal of the transformer 230. The resonant frequency matching circuit 240 may be a general equivalent of the vibrators 140, 150, 160, and 170, for example, in terms of equivalent circuits of the vibrators 140, 150, 160, The circuit can be expressed as (a). Here, Cd is a capacitance component not directly related to vibration, and the rest constitutes a series resonant circuit by R, L, and C.

The equivalent circuit (a) has equivalent characteristics as in (b) and (c) when it is resonated by the transformer 230 in a certain ultrasonic frequency range. When such a constant resonance is taken, a reactance value due to R and C is present. Therefore, when a series resonant circuit is formed by connecting L1 to the outside as shown in (d), only the net resistance R is left as shown in (e).

That is, the frequency matching circuit 240 includes a combining circuit in which the capacitance C1 is connected in series with the inductance L1, and the oscillators 140, 150, 160, and 170 are connected in parallel to the capacitance C1 As a result, when the series resonance frequency coincides with the natural resonance frequency of the vibrator 140, 150, 160, and 170, the vibrator 140, 150, 160,

The value of the coil L1 can be set as the inductance required is calculated by substituting the inherent capacitance value and the resonance frequency value of the equivalent circuit of the vibrators 140, 150, 160, and 170 in series resonance . At this time, it is preferable that the capacitance C1 is preset to about 10% of the reactance value of the inherent capacitance.

Since the coil L1 of (d) is generally larger than 1, the voltage applied to the capacitor or the coil of the series resonant circuit is usually larger than the input voltage. Therefore, the ultrasonic vibration output is also increased.

For example, when the voltage input to the matching circuit is 40Vrms, the output voltage at the end of connecting the vibrators 140, 150, 160, and 170 to the matching circuit has an output voltage increase of about 2.2 times as high as 89Vrms. Even when the ultrasonic output is amplified by the fly-back method, the frequency matching circuit has the same effect of increasing the output voltage. C1 of the resonance frequency matching circuit is connected in parallel with the equivalent capacitance of the vibrators 140, 150, 160, 170 as a series resonance time constant for matching the resonance frequency of the piezoelectric element externally like L1.

Here, it is preferable that L1 of the resonant frequency matching circuit 31 uses a shielded drum type inductor capable of shielding a leakage magnetic field and having a low DC resistance value. Also, it is preferable to use a capacitor having a high withstand voltage in consideration of an AC voltage with a good temperature characteristic and a high frequency characteristic and a circuit.

Meanwhile, the transformer 230 may preferably use a half-bridge resonant method to transform the primary side voltage to a secondary side output voltage. In other words, as shown in FIG. 5, the half bridge LLC, which can implement an appropriate output regulation for sensitive load fluctuations even when the switching frequency is relatively small to generate the secondary output voltage covering all the resonant frequency range of the oscillator By applying the resonant (Half-Bridge LLC Resonant) method, it is possible to realize a transformer having a high efficiency while using a low voltage.

The battery is a rechargeable secondary battery, for example, which inputs a DC voltage of approximately 3.7 V into a DC / DC converter, and the DC / DC converter boosts a 3.7 V DC voltage to a DC voltage of approximately 7 to 8 V. The boosted source voltage of about 7 to 8V is controlled by the control unit and applied to the primary side voltage of the transformer. At this time, the step-up range of the DC / DC converter can be varied and set in consideration of the output performance of the ultrasonic cosmetic device.

The control unit 220 includes a microcomputer 221 and a switching unit 222. The microcomputer 221 outputs a predetermined resonance frequency range for oscillation of the ultrasonic transducer. Thereby generating an input signal in the resonance frequency range and applying it to the primary side. On the other hand, the transformer 230 boosts the voltage applied to the primary side to a predetermined level, transforms it to an output voltage on the secondary side, and applies the voltage to the ultrasonic vibrators 140, 150, 160, and 170 through the cable .

When a voltage induced on the secondary side is applied to the ultrasonic vibrators 140, 150, 160 and 170, the ultrasonic vibrators 140, 150, 160 and 170 physically vibrate and the vibration is transmitted through the diaphragm 110 as a medium And applied to the user's skin. That is, the intensity of vibration of the ultrasonic vibrators 140, 150, 160, and 170 can be greatly improved through the second step-up.

On the other hand, the DC voltage of the battery is generated by the fast switching of the switching unit, and thus the voltage induced on the secondary side of the transformer has an AC voltage characteristic. In order to stably withstand the energy of the vibrator, the DC / DC converter 210 may be configured to maintain a constant force when the voltage is increased by using a power inductor coil.

The ultrasonic transducers 140, 150, 160, and 170 may be formed on one surface of the diaphragm 110. That is, a total of four oscillators 140, 150, 160, and 170 on both sides of the diaphragm 110 are repeatedly expanded and contracted above and below the diaphragm 110, It is possible to improve the magnitude of the physical vibration transmitted through the antenna. However, if three or more pairs of ultrasonic transducers are formed on the diaphragm, the case of the beauty device becomes large, which is not suitable for portable use, and a problem may arise in outputting a vibration voltage applied to vibrate both of the ultrasonic transducers.

On the other hand, the ultrasonic transducer may be formed in a structure in which only two ultrasonic transducers are formed on one surface of the diaphragm and the transducer is not formed on the other surface for the purpose of reducing manufacturing costs.

The ultrasonic transducers 140, 150, 160, and 170 are made of a PZT system piezoelectric ceramic plate, and are bonded to an insulating member 130, which is a thin plate made of a hard epoxy resin or the like. The insulating member 130 electrically isolates the ultrasonic transducers 140, 150, 160 and 170 from the amplifying plate 120 and the diaphragm 110, and acoustically isolates the ultrasonic transducers 140, 150, 160, And the amplifying plate 120 almost completely. The amplifying plate 120 strongly bonded to the surface of the diaphragm 110 is made of a metal material such as aluminum and has a physical displacement that contracts and expands laterally of the ultrasonic vibrators 140, And amplifies it with a suitable longitudinal physical displacement.

One end of the diaphragm 110 may be configured to have a curved surface 111 at a predetermined angle to form a skin-contacting portion. The direction in which the resonator and the vibrators 140, 150, 160, and 170 are attached to the diaphragm 110 is independent of the ultrasonic vibration characteristics regardless of the direction in which the bent surface 111 is bent. In addition, the bent direction of the bent surface 111 can be differently applied depending on the direction and angle.

As described above, the present invention has been described with reference to particular embodiments, such as specific elements, and specific embodiments and drawings. However, it should be understood that the present invention is not limited to the above- And various modifications and changes may be made thereto by those skilled in the art to which the present invention pertains.

Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

110: diaphragm
120: amplification plate
130: Insulation member
140, 150: upper vibrator
160, 170: Lower vibrator

Claims (8)

A DC / DC converter for boosting a DC voltage delivered from a battery to a DC voltage of a predetermined size;
And a switching unit for switching a resonance frequency range output from the micom and the micom to output a preset resonance frequency range;
A DC voltage boosted by the DC / DC converter is converted into a primary voltage as an input signal through a switching action of the switching unit together with a resonance frequency range from the microcomputer, and the output of the secondary side A transformer transforming the voltage into a voltage; And
A vibrator assembly in which an amplifying plate or a resonating member is formed on one surface or both surfaces of the diaphragm, and the ultrasonic vibrator is formed on one surface of the diaphragm having the amplifying plate or the resonating member;
And an ultrasonic cosmetic device.
The method according to claim 1,
Wherein the DC / DC converter includes at least three resistors connected in parallel to an output terminal and a feedback voltage terminal, and two voltage switching elements respectively provided after two selected ones of the three resistors, The ultrasonic cosmetic device controlling the size of the ultrasound.
The method according to claim 1,
Wherein the switching unit includes at least two switching elements to generate a resonance frequency in a resonance frequency range output from the microcomputer.
The method according to claim 1,
Wherein the transformer transforms the primary side voltage to a secondary side output voltage by a half bridge resonance (Half-Bridge Resonant) method.
The method according to claim 1,
Wherein the ultrasonic vibrator has two diaphragms formed on one surface of the diaphragm.
The method according to claim 1,
Wherein the DC / DC converter includes a power inductor as a coil.
The method according to claim 1,
Wherein the vibrator assembly includes an insulating member disposed between the diaphragm and the amplifying plate or the resonant member.
The method according to claim 1,
Wherein one end of the diaphragm is formed with a bent surface at a predetermined angle.

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