JP3061269B1 - Ultrasonic health and beauty probe - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To provide a probe for an ultrasonic health / cosmetic device which can eliminate a restriction on drawing processing, can secure desired characteristics as well as a cut product, and can greatly reduce a processing cost as compared with a cut product. . SOLUTION: A ceramic vibrator TD is provided inside an aluminum cap 21, and ultrasonic vibration generated by the ceramic vibrator TD is applied to a skin contact site.
In the cosmetic device probe, the ceramic vibrator TD is attached to the inner bottom surface of the cap 21 via a metal plate 22 of the same or different type as the cap. The surface of the cap 21 has been subjected to a glossy surface treatment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic device having a built-in ultrasonic ceramic vibrator and allowing a drug or the like to permeate the skin by the ultrasonic vibration, and more particularly to a structure in which a ceramic vibrator is attached to a metal cap. The present invention relates to a cap-shaped ultrasonic health and beauty instrument probe having a shape.

[0002]

2. Description of the Related Art Conventionally, an ultrasonic probe having a ceramic vibrator provided inside a metal cap has been provided, and a high frequency current has been applied to the ceramic vibrator, and the ultrasonic vibration by the ceramic vibrator has contacted the probe. 2. Description of the Related Art There are known cosmetic devices which are applied to a desired part of the skin to penetrate a drug solution or the like.

FIG. 5 shows a first conventional example of this type of ultrasonic cosmetic device probe. After cutting an aluminum bar into a cap shape with a sufficiently thick bottom portion, the outer surface of the cap 1 is cut. And a ceramic vibrator TD is attached to the inner bottom surface. Generally, in order to efficiently transmit ultrasonic vibration of a ceramic vibrator, the thickness of the bottom of the cap is set to an odd multiple of λ / 4 (where λ: wavelength) of the ultrasonic vibration. Yes, mostly 3
λ / 4 was used. In the case of 3λ / 4, an aluminum material needs a thickness of about 5 mm.

FIG. 6 shows a second conventional example in which a relatively thick aluminum plate is formed into a cap shape by drawing.
The ceramic vibrator TD is attached to the inner bottom surface of the cap 2. In this case, the thickness cannot be increased due to the restriction of the drawing process. Therefore, when the thickness of the bottom of the cap is set to λ / 4, the thickness is slightly more than 2 mm.

In addition, as disclosed in Japanese Patent Application Laid-Open No. 10-248898, a probe in which a metal cap is made of stainless steel is known.

[0006]

The first problem shown in FIG.
In the conventional example, there is a disadvantage that the material is wasted due to the cutting of the aluminum bar, and the processing time is long, so that the cost is high. Furthermore, since it is used for beauty equipment from the appearance, high gloss is required, so after cutting the outer periphery, buffing is performed, and chrome plating is applied so as not to be affected by the chemical solution, so it is extremely expensive Had become.

In the second conventional example shown in FIG. 6, an aluminum plate material is formed into a cap shape by drawing in order to reduce the cost, but the processing cost for forming the cap shape is about one-third as compared with cutting. On the other hand, it is difficult to adjust the thickness of the bottom of the cap to the resonance frequency of the ceramic vibrator (a slight change in the thickness is a problem because it is set to about λ / 4 of the ultrasonic vibration). The drawing of 2 mm or more has drawbacks in that processing restrictions such as the drawing depth and the rounded shape of the bottom corner are generated, and it is difficult to satisfy the desired shape and characteristics. It should be noted that even when the cap is formed of a metal material other than the aluminum material, the above-described problem associated with cutting or drawing occurs.

[0008] In view of the above, the present invention eliminates restrictions on drawing, can secure desired characteristics as well as a cut product, and can significantly reduce the processing cost as compared with a cut product. -To provide a probe for a cosmetic device.

Other objects and novel features of the present invention will be clarified in embodiments described later.

[0010]

In order to achieve the above object, the present invention provides a ceramic vibrator provided inside a metal cap and applies ultrasonic vibration generated by the ceramic vibrator to a contact portion of the skin. In the ultrasonic health and beauty instrument probe, the metal cap is formed of an aluminum plate.
And it has a metal diameter on a ceramic oscillator and the diameter or less on the inside bottom surface in the cap and dissimilar metals of the metal cap
The invention is characterized in that the ceramic vibrator is attached via a disk .

[0011]

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of a cosmetic device probe will be described with reference to the drawings.

FIGS. 1 and 2 show a first embodiment of the present invention. FIG. 1 shows a structure of a probe for an ultrasonic health / cosmetic device, and FIG. 2 shows a portable device as a cosmetic device equipped with the probe. Shows facial equipment. This portable facial device is divided into a resin case 10 and a probe 20 that comes into contact with the skin.
In the case 10, a ceramic vibrator T on the probe 20 side is provided.
A drive circuit and a control circuit (not shown) for driving D are built in. The probe 20 has a ceramic vibrator TD attached (adhered) to the inner bottom surface of an aluminum cap 21 via a metal plate 22 as a vibration transmission plate, as shown in FIG. Here, aluminum cap 2
Reference numeral 1 denotes an aluminum plate having a thickness of about 0.5 to 1 mm formed in a cap shape by drawing. Metal plate 22 is cap 2
1 is a different kind of material . The attachment of the metal plate 22 to the inner bottom surface of the cap 21 and the attachment of the ceramic vibrator TD to the metal plate 22 can be performed by bonding and integrating with an epoxy adhesive or the like. The ceramic vibrator TD has electrodes a and b on the upper and lower end surfaces of the piezoelectric ceramic disk and performs thickness vibration. Each of the vibrators TD is connected to a substrate on which a drive circuit is mounted in the case 10 via a lead wire 25. ing. The metal plate 22 is also made of a ceramic vibrator TD.
It is a disc with the same diameter or slightly larger diameter.

[0014] wavelength λ when the resonant frequency is f ₀ of the ultrasonic ceramic transducers TD are expressed by the following equation. λ = V / f ₀ (where V: sound velocity in the material) If f ₀ is 1 MHz and the sound velocity in aluminum is 6880 m,
λ = 6.88 mm. As described in the description of the related art, generally, in order to efficiently transmit ultrasonic vibration of a ceramic vibrator, the thickness of the bottom of the cap is set to an odd multiple of λ / 4 of the ultrasonic vibration. Had been done. In most cases, 3λ / 4 is used, and in this case, 6.88 × 3
/4=5.16, and the thickness of the aluminum material is required to be 5.16 mm.

In the present embodiment, the cap 21 itself is formed by drawing a glossy aluminum thin plate of 0.5 to 1 mm, and the ultrasonic vibration can be efficiently transmitted to the metal plate 22 as a vibration transmission plate. Required thickness (5-6 equivalent to 3λ / 4)
mm thickness). In fact, the type of aluminum,
Since there are many elements that cannot be obtained by calculation such as the shape of the cap, the thickness of the electrode of the ceramic vibrator TD, the thickness of the adhesive, and the like, the optimum value is obtained by experiment using an odd multiple of λ / 4 as a guide.

When the ceramic vibrator TD attached to the cap 21 is driven by a self-excited oscillation circuit, there are many circuits that oscillate when the phase of the ceramic vibrator TD is positive (that is, inductive). (A) (However, cap outer diameter 4
2mm, inner diameter 37mm, wall thickness 0.6mm, transducer diameter 28mm,
The thickness is 2 mm, the metal plate 22 is made of brass, and has a region where the phase is positive near the resonance point, as in the case of a vibrator having the same diameter and the thickness of 3.9 mm, and can be driven by a self-excited oscillation circuit. Fig. 4 (B) (However, the cap outer diameter is the same, the wall thickness is slightly more than 2mm, and the vibrator is the same)
Shows the case of the second conventional example of FIG. 6 for comparison. Both have phase and impedance characteristics that do not cause a problem in self-excited oscillation.

According to the first embodiment, the following effects can be obtained.

(1) Since the ceramic vibrator TD is adhered to the inner bottom surface of the aluminum cap 21 via a metal plate (vibration transmission plate) 22 of a different type from the cap, the cap 21
The thickness of the cap may be thin so that it can be drawn easily, the processing cost can be reduced, and the degree of freedom of the cap shape is large. In addition, the characteristics are comparable to the case where a cap of a cut product is used.

(2) The cap 21 can be formed by drawing an aluminum plate, and by performing polishing or plating after the drawing, luster equivalent to chrome plating can be realized at low cost.

(3) By setting the thickness of the metal plate 22 to an appropriate thickness that matches the resonance frequency of the ceramic vibrator TD (for example, near 3λ / 4), the ceramic vibrator TD can be set at an optimum frequency. Driving is possible, and transmission of ultrasonic vibration to the cap 21 by the metal plate 22 can also be efficiently executed.
Further, by changing the dimensions of the metal plate 22, it is not necessary to manufacture a case according to the type of the resonance frequency.

(4) The weight of the probe can be reduced, and the usability is improved.

FIG. 3 shows a second embodiment of the present invention.
In this case, the metal plate 22A as the vibration transmission plate is a brass plate, and one electrode a of the ceramic vibrator TD is the metal plate 2A.
It is directly electromechanically connected to 2A by soldering. Therefore, the metal plate 22A can be used as a connection terminal without providing a folded portion on the electrode a of the vibrator TD, and the lead wire 25 can be connected. Other configurations are the same as those of the first embodiment.

In the second embodiment, the first embodiment
In addition to the effects of the embodiment, the ceramic vibrator T
There is an advantage that the electrode structure of D can be simplified.

In each of the embodiments, a portable beautifier has been exemplified, but the present invention can be applied to a health appliance utilizing ultrasonic vibration.

Although the embodiments of the present invention have been described above, it is obvious to those skilled in the art that the present invention is not limited to the embodiments and various modifications and changes can be made within the scope of the claims. There will be.

[0026]

As described above, according to the ultrasonic health / cosmetic device probe of the present invention, the ceramic vibrator is attached to the inner bottom surface of the metal cap via a metal disk different from the cap. With this configuration, the thickness of the metal cap may be a thin aluminum plate that is easy to be drawn, and the processing cost can be reduced, and the degree of freedom of the cap shape is large. Further, by setting the thickness of the metal disc to an appropriate thickness that matches the resonance frequency of the ceramic vibrator (for example, in the vicinity of 3λ / 4), the ceramic vibrator can be driven at the optimum frequency, and the metal circle can be driven. Ultrasonic vibration transmission to the cap by the plate can also be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a first embodiment of an ultrasonic health / cosmetic instrument probe according to the present invention.

FIG. 2 is a perspective view showing a portable facial device provided with an ultrasonic health / cosmetic device probe in the first embodiment.

FIG. 3 is a front sectional view showing a second embodiment of the present invention.

FIG. 4 is a frequency characteristic diagram of impedance and phase of a ceramic vibrator in the case of the first embodiment and in the case of the second conventional example.

FIG. 5 is a front sectional view of a first conventional example of an ultrasonic cosmetic device probe.

FIG. 6 is a front sectional view of a second conventional example of an ultrasonic cosmetic device probe.

[Explanation of symbols]

 1,2,21 cap 10 case 20 probe 22,22A metal plate 25 lead wire

Claims (1)

(57) [Claims] 1. An ultrasonic health and beauty instrument probe in which a ceramic vibrator is provided inside a metal cap, and ultrasonic vibration generated by the ceramic vibrator is applied to a contact portion of the skin, wherein the metal cap is an aluminum plate. in is formed, the cap and the dissimilar metals inside bottom surface of the metal cap
A probe for an ultrasonic health / cosmetic device, wherein the ceramic vibrator is attached via a metal disk having a diameter equal to or larger than that of the ceramic vibrator.