JP3547456B2 - Ultrasonic beauty equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cosmetic device using ultrasonic waves.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a device that activates skin using ultrasonic waves is known. For example, an ultrasonic vibration actuator proposed by the present inventor and disclosed as Japanese Patent Application Laid-Open No. Hei 6-328042 includes a diaphragm, keel plates attached to both sides of the diaphragm, and a piezoelectric ceramic vibrator attached to the surface of each keel plate. It is a device with a deformed bimorph structure composed of children, and is applicable to skin activation.
[0003]
In this ultrasonic vibration actuator, by applying a voltage to each of the piezoelectric ceramics so that the relationship between the polarization direction and the electric field direction is opposite to each other, the diaphragm undergoes bending deformation and takes out a displacement sufficient for practical use. be able to.
[0004]
However, when using the ultrasonic vibration actuator described above and applying a DC voltage between the diaphragm and the skin, current flows only to the surface between the positive and negative poles. , The spread of current is small. That is, since the current flowing through the skin is limited to an extremely narrow range, it is not always sufficient to activate the skin.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of the above-described problems, and in addition to mechanical vibration by a diaphragm, an electric current is more effectively passed through the skin, thereby enabling further activation of the skin. An object is to provide a sonic cosmetic device.
[0006]
[Means for Solving the Problems]
[0007]
The device according to the present invention is an ultrasonic vibration actuator including a metal diaphragm that vibrates with ultrasonic waves by vibrating an ultrasonic vibrator, and an alternating current for applying between the diaphragm and the skin. A power supply device for outputting a voltage including a component, wherein the power supply device is configured to include a transformer for extracting a part of a vibration voltage applied to the ultrasonic transducer, and the power supply device being extracted from the transformer. A rectifier for rectifying the oscillating voltage into a pulsating voltage. The power supply device preferably has a smoothing circuit including a capacitor and a variable resistor, and the magnitude of the AC component of the voltage including the AC component can be adjusted by changing the resistance value of the variable resistor. It is.
[0008]
The ultrasonic vibration actuator includes a vibration plate, keel plates attached to both sides of the vibration plate, and an ultrasonic vibrator attached to each keel plate. A curved surface having a diameter substantially equal to a quarter of the vibration wavelength of the diaphragm is formed at a tip portion of the diaphragm.
[0009]
By bringing the working part of the diaphragm into contact with the skin of the subject, a pulsating voltage synchronized with the ultrasonic vibration is applied to the skin together with the ultrasonic vibration. By applying a pulsating voltage to the skin, electricity is applied from the surface of the skin through various barriers of the lower tissue and intercellular binding water, and an ionizing action of the water is generated by energizing the subcutaneous tissue.
The pulsating voltage is obtained by electromagnetic induction from a vibration voltage applied to the ultrasonic vibrator, for example. In this case, the pulsating voltage and the oscillating voltage are completely synchronized, and a current flows over a wide area of the skin, which is effective in activating the skin.
[0010]
Therefore, according to the present invention, in addition to the mechanical vibration by the diaphragm, the current can be more effectively passed through the skin, so that the skin can be further activated. Further, the skin is further activated by the synergistic action of the vibration and the application of the pulse-like voltage. By providing a transformer and a rectifier for obtaining an AC voltage by electromagnetic induction, a pulsating voltage synchronized with ultrasonic vibration can be easily obtained.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
1 and 2, a vibration mechanism 7 corresponding to the ultrasonic vibration actuator of the present invention includes a vibration plate 11, keel plates 12a and 12b, ultrasonic vibrators 13a1, 13a2, 13b1, 13b2, and an insulating plate 14a. , 14b, etc. All or part of the ultrasonic transducers 13a1, 13a2, 13b1, 13b2 may be described as "ultrasonic transducer 13", "ultrasonic transducer 13a", and "ultrasonic transducer 13b".
[0012]
The vibration plate 11 is made of a metal such as a stainless steel plate or a hard thin copper plate, and has elasticity that flexibly and flexibly.
The keel plates 12a and 12b are used to convert the displacement due to the shear wave into a longitudinal wave, and are made of a stainless steel plate (or aluminum or duralumin) having substantially the same thickness as the diaphragm 11. The keel plates 12a and 12b are firmly attached to the surfaces on both sides of the diaphragm 11 with a structural adhesive so as to be elastically coupled to the diaphragm 11.
[0013]
The ultrasonic transducers 13a and 13b are made of, for example, PZT-based disc-shaped piezoelectric ceramic plates. The ultrasonic transducers 13a and 13b are installed on the surfaces of the insulating plates 14a and 14b so that their polarization directions are the same, and are bonded by a structural adhesive or the like. In the present embodiment, two ultrasonic transducers 13a1, 13a2 and 13b1, 13b2 are provided on each surface, and are connected in parallel. The number of the ultrasonic transducers 13a and 13b may be increased or decreased according to the required power.
[0014]
The insulating plates 14a and 14b are thin plates made of hard epoxy resin, and a 30-micron thick copper foil having good conductivity is laminated on the surface on the side where the ultrasonic vibrators 13a and 13b are mounted. The insulating plates 14a and 14b electrically insulate the ultrasonic vibrators 13a and 13b from the keel plates 12a and 12b and the vibrating plate 11, and acoustically form the ultrasonic vibrators 13a and 13b and the keel plates 12a and 12b. Is almost completely elastically coupled.
[0015]
The respective parts of the vibration mechanism 7 are adhered to each other, for example, as follows, and are firmly adhered.
For bonding the diaphragm 11 and the keel plates 12a and 12b, a thermosetting epoxy resin containing ginandiamide is used as a structural adhesive, and the pressure is increased for press contact at 135 ° C. for 1 hour. Perform processing.
[0016]
For adhesion between the keel plates 12a, 12b and the insulating plates 14a, 14b, a scotch weld containing polyamidoamine and alumina (manufactured by 3M) is used and cured at 100 to 125 ° C. for 1 hour.
[0017]
Unlike the mechanical structural bonding, the ultrasonic transducers 13a, 13b and the insulating plates 14a, 14b require strong bonding with emphasis on conductivity, so use an Araldite adhesive and further use carbon. Mix and cure by sintering at 135 ° C for 1 hour. Further, the temperature is naturally lowered from 135 ° C., and annealing (annealing treatment) is performed so as not to cause shrinkage distortion due to rapid temperature change of the bonding surface.
[0018]
Therefore, by applying a vibration voltage of, for example, 20 to 60 kHz to the ultrasonic vibrators 13a and 13b, a longitudinal wave is propagated to the action portion EF at the tip of the vibration plate 11 and vibration displacement occurs.
Note that by changing the length or thickness of the keel plates 12a and 12b from each other, a modified bimorph structure can be obtained. As such a structure, various structures described in Japanese Patent Application Laid-Open No. 6-328042 can be employed.
[0019]
As shown in FIG. 3, the distal end portion of the diaphragm 11 includes a portion 111 bent downward in the drawing to form a curved surface and a portion 112 bent upward in the drawing to form a curved surface. Have.
The radius of curvature R1 of the portion 112 is half of the vibration wavelength λ of the vibration plate 11, that is, 1/8 wavelength. The radius of curvature R2 of the portion 111 is about 1/4 of the radius of curvature R1. For example, when 1/4 of the oscillation wavelength is 9 mm, the radius of curvature R1 is 4.5 mm and the radius of curvature R2 is about 1 to 1.5 mm. The action part EF at the tip of the diaphragm 11 has an inclination of about 20 degrees upward.
[0020]
Make dimension L4 as small as possible and make dimension L3 as long as possible. The dimension L1 and the dimension L2 are made as equal as possible to achieve a good balance of vibration. Dimensions L5 and L6 are also made as equal as possible to achieve a good balance of vibration.
As described above, the distal end of the diaphragm 11 is not a mere open end, but is formed into a curved surface with the radii of curvature R1 and R2. The inner surface of the curved surface is easy to expand and the outer surface is easily contracted, and has a kind of spring effect, so it has a buffering effect and is advantageous in generating longitudinal vibration.
[0021]
As shown in FIG. 4, the contact portion of the distal end of the diaphragm 11 with the skin is formed in an arc shape with a radius of curvature R3. The width L7 of the arc-shaped portion is equal to the radius of curvature R3. This makes it easier for the leading edge of the diaphragm 11 to conform to the skin. Since the leading edge is arc-shaped, its length is longer than that of a straight line. When the tip edge is pressed against the skin and moved, there is an effect that the swelling due to expansion and contraction of the skin is less likely to be caught.
[0022]
As shown in FIGS. 5 and 6, the vibration mechanism 7 is housed in a synthetic resin or metal casing 21, and is held by dampers 22, 23, 24 made of synthetic rubber.
The damper 24 fixes the rear end of the diaphragm 11. The damper 23 presses the middle part of the diaphragm 11 on both sides. The damper 22 fixes the diaphragm 11 at the outlet of the casing 21 by pressing the diaphragm 11 from above and below. Since the damper 22 also exerts a sealing action, this provides a simple waterproof structure. The diaphragm 11 vibrates like a repellent part outside the damper 22 with the part supported by the damper 22 as a fulcrum.
[0023]
The electrical connection to the vibration mechanism 7 is made by a cable 31 passing through a bushing 25 attached to the rear end of the casing 21. The cable 31 has four core wires. One pole (CP2) of the ultrasonic vibrator 13, the other pole (CP1) of the ultrasonic vibrator 13, the ground (CP4) of the casing 21, and the diaphragm 11 (CP3).
[0024]
In FIG. 7, the control device 4 includes a power supply noise suppression circuit 201, a power supply circuit 202, an oscillation circuit 203, a drive circuit 204, a timing variable circuit 205, an adjuster 206, an intermittent signal generation circuit 207, a control panel 208, a changeover switch. 209, a transformer 210, a transformer 211, a rectifier 212, a capacitor 213, a variable resistor 214, and a changeover switch 215.
[0025]
The power supply circuit 202 supplies a positive current voltage Vcc and a negative DC voltage Vss to the drive circuit 204, and also supplies a DC voltage to each unit.
The oscillation signal output from the oscillation circuit 203 is input to the drive circuit 204 via the changeover switch 209. In the drive circuit 204, power amplification is performed by a transistor or the like, and output to the primary side of the transformer 210.
[0026]
The output of the oscillation circuit 203 is also input to the intermittent signal generation circuit 207, and is output to the drive circuit 204 intermittently by the intermittent signal generation circuit 207 when the changeover switch 209 is switched. The intermittent signal generation circuit 207 outputs intermittently, for example, at a period of 10 to 250 msec. The timing variable circuit 205 generates an intermittent signal. The adjuster 206 adjusts the timing of generating the intermittent signal.
[0027]
The control panel 208 is provided with an indicator light indicating an operation state of each unit, an indicator indicating voltage or current, a display circuit indicating a mode or a switching state, and the like.
[0028]
The oscillating voltage induced on the secondary side of the transformer 210 is output to terminals CP1 and CP2, from which it is applied to the ultrasonic transducer 13 via the cable 31. A part of the oscillating voltage is taken out via the transformer 211. The transformer 211 is a one-turn coil whose primary side is a toroidal core having an electric wire penetrated, and generates a voltage on a secondary side that is wound a plurality of times by electromagnetic induction. The output on the secondary side of the transformer 211 is full-wave rectified by the rectifier 212, and the waveform is adjusted by a smoothing circuit including the capacitor 213 and the variable resistor 214.
[0029]
When the resistance value of the variable resistor 214 is small, as shown in FIG. 8A, the AC component VA1 is small and the DC component is a large pulsating flow, and when the resistance value of the variable resistor 214 is large, As shown in FIG. 8 (B), the pulsating flow has a large AC component VA2 and a small DC component.
[0030]
The direction of the polarity of the pulsating flow that has passed through the smoothing circuit is selected by the changeover switch 215, and is output between the diaphragm 11 of the vibration mechanism 7 and the wristband WB. The wristband WB is attached to the wrist of the beauty subject, and the working portion EF at the tip of the diaphragm 11 is brought into contact with the surface of the skin such as the face or hand of the subject. Will be applied to the skin.
[0031]
The pulsating voltage VF has a peak value of about 6 V in consideration of the resistance of the human body. However, the voltage applied to the skin via water is limited to within 0.6V to 2V which electrolyzes or dissociates the water. As described above, the impulse-like weak pulsating voltage is applied to the subject's skin via the water.
[0032]
Next, the method of use and operation of the ultrasonic cosmetic device 1 will be described.
The main body 3 and the control device 4 are connected as shown in FIG. 7, and the wristband WB is worn on the wrist of the subject. The power supply circuit 202 is turned on, and an oscillating voltage is applied to the ultrasonic transducer 13. As a result, the ultrasonic vibrator 13 vibrates, and the action portion EF of the diaphragm 11 vibrates. By bringing the operating portion EF of the diaphragm 11 into contact with the subject's skin, a pulse current VF synchronized with the ultrasonic vibration is applied to the skin along with the ultrasonic vibration.
[0033]
When the changeover switch 215 is switched upward as shown in FIG. 7, the diaphragm 11 has a positive pole and the human body has a negative pole. When the changeover switch 215 is reversed, the diaphragm 11 has a negative pole and the human body has a positive pole. In this case, a current flows from the skin surface of the human body toward the diaphragm 11, and a dissociation action acts on the skin surface with which the diaphragm 11 contacts via water.
[0034]
As described above, by applying the pulsating voltage VF to the skin, the addition is performed from the surface of the skin through various barriers of the lower tissue and the intercellular binding water, and an ionizing action of the water is generated by energizing the subcutaneous tissue.
Since the pulsating voltage VF is obtained by induction from the oscillating voltage applied to the ultrasonic vibrator 13, the pulsating voltage VF and the oscillating voltage or the vibration of the diaphragm 11 are completely synchronized, and the pulsating voltage VF covers a wide area of the skin. Electric current flows across it, which is extremely effective in activating the skin.
[0035]
FIG. 9 and FIG. 10 are diagrams showing examples of the state of the skin by using the ultrasonic cosmetic device 1. FIG.
As shown in FIG. 9, when the distal end edge of the action portion EF of the diaphragm 11 is pressed against the skin and used to scoop the surface of the skin with the diaphragm 11, the cleaning liquid or the like is mist-formed by ultrasonic vibration. In addition, dirt and the like in the pores PR are instantly emulsified and washed, and old dead skin cells are easily removed. As a result, the surface of the skin is refreshed.
[0036]
Further, as shown in FIG. 10, when the back surface of the action section EF of the diaphragm 11 is used to press against the skin, the mist-introduced liquid by the ultrasonic vibration penetrates deep into the skin, and the ultrasonic vibration Is activated. The result is moist and firm skin.
[0037]
The operation and effects of the ultrasonic cosmetic device 1 are summarized as follows.
{Circle around (1)} Since the vibration mechanism 7 for ultrasonic vibration is housed in the casing 21 and has a probe shape, it is easy to use for medical treatment.
(2) At the same time that ultrasonic vibration is applied to the subject's skin by the diaphragm 11, the pulsating voltage VF is applied by interposing water on the treated surface of the skin. Act on.
(3) A curved surface and a circular arc are formed on the working portion EF of the diaphragm 11, and the skin can be subjected to treatments such as tanning, scuffing, scooping, rubbing, and stroking by the working portion EF of the diaphragm 11. In addition, cleaning and cleaning can be performed, which is effective for beautiful face and beauty.
{Circle around (4)} Rapping and patting are performed on the front surface of the curved surface of the diaphragm 11, and a scriber function of the skin surface is performed at the tip of the back of the curved surface. In addition, mechanically soft vibration is obtained by the buffering action of the curved surface.
(5) By switching the changeover switch 209 to the intermittent mode side, the ultrasonic vibration is intermittently driven while ionizing the water, and a “tataki” effect on the skin can be obtained, and the metabolic activity becomes inside the subcutaneous tissue. The stimulus can be propagated.
{Circle around (6)} When used for applying cosmetics, an appropriate amount of cream is placed on the surface of the skin, such as the face or hands, and then moved on the skin while pushing the cream with the action section EF of the diaphragm 11. This results in a very good penetration of the cream into the skin and at the same time oscillates and activates the subcutaneous tissue of the skin.
{Circle around (7)} When the used cream is to be dropped, the diaphragm 11 is moved while pressing the surface of the skin with the tip of the working portion EF of the diaphragm 11. When the surface of the skin is dry, water or oil is applied to the working portion EF so that the ultrasonic vibration is efficiently transmitted to the skin.
In the embodiment described above, one pole of the pulsating voltage VF is connected to the subject by the wristband WB, but an appropriate clip may be used. You may connect to two or more places of an object person. The connection point can be appropriately selected such as an arm, an earlobe, or a shoulder. In addition, the configuration, shape, material, size, number, and the like of the vibration mechanism 7, the main body 3, the control device 4, and the whole or each part of the ultrasonic cosmetic device 1 can be appropriately changed in accordance with the gist of the present invention.
[0038]
Industrial Applicability As described above, the ultrasonic cosmetic device according to the present invention further activates the skin by applying a current to the skin more effectively in addition to the mechanical vibration by the diaphragm. It is useful in the beauty and health industries that promote beauty and health.
[Brief description of the drawings]
FIG. 1 is a front sectional view showing a vibration mechanism of a main body of an ultrasonic cosmetic device according to the present invention.
FIG. 2 is a plan view showing the vibration mechanism of FIG.
FIG. 3 is an enlarged front view showing a distal end portion of a vibration plate of the vibration mechanism.
FIG. 4 is an enlarged plan view showing a distal end portion of the diaphragm.
FIG. 5 is a front sectional view of a main body of the ultrasonic cosmetic device.
FIG. 6 is a plan sectional view of a main body of the ultrasonic cosmetic device.
FIG. 7 is a block diagram showing a circuit of a control device of the ultrasonic cosmetic device.
FIG. 8 is a diagram showing a waveform of a pulsating voltage for a voltage reduction method.
FIG. 9 is a diagram showing an example of the state of the skin by using the ultrasonic cosmetic device.
FIG. 10 is a diagram showing an example of the state of the skin by using the ultrasonic cosmetic device.

Claims (7)

An ultrasonic vibration actuator having a metal diaphragm vibrated by ultrasonic waves by vibrating the ultrasonic vibrator,
A power supply device for outputting a voltage including an AC component, for applying between the diaphragm and the skin,
The power supply,
A transformer for extracting a part of the vibration voltage applied to the ultrasonic transducer,
A rectifier for rectifying the oscillating voltage taken out of the transformer into a pulsating voltage,
An ultrasonic cosmetic device comprising: The power supply,
It has a smoothing circuit consisting of a capacitor and a variable resistor, it is possible to adjust the magnitude of the AC component of the voltage including the AC component by changing the resistance value of the variable resistor,
The ultrasonic cosmetic device according to claim 1. The power supply,
A changeover switch for selecting the direction of the polarity of the voltage including the AC component,
The ultrasonic cosmetic device according to claim 1. An ultrasonic vibration actuator having a metal diaphragm vibrated by ultrasonic waves,
For applying between the diaphragm and the skin, a power supply device that outputs a voltage containing an AC component,
The ultrasonic vibration actuator,
Keel plates attached to both sides of the diaphragm,
An ultrasonic vibrator attached to each of the keel plates,
A curved surface having a diameter substantially equal to a quarter of the vibration wavelength of the diaphragm is formed at a tip portion of the diaphragm.
An ultrasonic beauty device characterized by that: The power supply,
Outputting a pulsating voltage in which an AC voltage and a DC voltage are superimposed,
The ultrasonic cosmetic device according to claim 4. The AC voltage is synchronized with the vibration of the diaphragm,
An ultrasonic cosmetic device according to claim 5. The power supply,
A transformer for obtaining the AC voltage by electromagnetic induction from an AC power supply for supplying the ultrasonic transducer;
A rectifier for rectifying the AC voltage output from the transformer,
The ultrasonic cosmetic device according to claim 6, comprising:

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