JP2006247251A - Ultrasonic cosmetic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To transmit a vibration energy from a vibrator to a horn with high efficiency and suppress heating of a vibration block easily and at a low cost in an ultrasonic cosmetic device. <P>SOLUTION: The device is equipped with the vibrator 1 for generating ultrasonic vibration and the ultrasonic vibration block 4 constituted of the horn 3 adhering to this vibrator 1 for transmitting an ultrasonic wave to the skin surface of a living body or the living body. A cross section structure which makes the thickness of the adhesive layer of the horn 3 and the vibrator 1 to thin thickness corresponding to the section where the ultrasonic vibration amplitude of the ultrasonic vibration block 4 is large is employed. By this, since the section where the ultrasonic energy is transmitted most is the section where the vibration amplitude is large, the ultrasonic vibration energy generated by the vibrator 1 can be transmitted to the horn 3 with high efficiency, and energy loss between the vibrator 1 and the horn 3 can be reduced. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an ultrasonic beauty apparatus for beautifying a skin surface of a living body or a target location in a living body using vibration energy in an ultrasonic region.

  Conventionally, for example, an ultrasonic beauty apparatus as shown in Patent Document 1 is known. As shown in FIG. 22, this type of ultrasonic beauty apparatus includes an ultrasonic vibrator 101 (hereinafter referred to as a vibrator) that converts electrical vibration into mechanical vibration, and vibration energy of mechanical vibration converted by the vibrator 101. Is provided with an ultrasonic vibration block 104 (hereinafter referred to as a vibration block) composed of a cap-shaped horn 103 having a radiation surface that transmits the ultrasonic wave as ultrasonic acoustic energy into the living body surface or the living body 102, and ultrasonic waves such as gels and gels. Ultrasound is transmitted to the beauty treatment unit of the living body 102 via the transmission medium 105.

  As shown in FIG. 23, the energy transmission flow of part A of this ultrasonic beauty apparatus is converted from electrical vibration (electric energy) to mechanical vibration (kinetic energy), from mechanical vibration (kinetic energy) to ultrasonic acoustic energy, Since the target ultrasonic treatment is finally performed, energy loss occurs in each energy conversion process, and high efficiency in each energy transmission process is required. Therefore, in each energy conversion, a method of supplying power to the electrodes with solder or contact springs with high efficiency in the power supply part of the electro-mechanical energy conversion process, and energy transfer with high efficiency by gel or gel in the mechanical-acoustic energy conversion process. In addition, each of the vibrator and the horn has been designed for high-efficiency energy transmission.

  However, inside the vibration block configuration, in addition to requiring a precise design for each of the horn and the vibrator, in order to bond (including mechanical connection) completely different members of the vibrator and the horn, 24, an adhesive layer 106 of about 20 μm that also serves to prevent air layer interference exists between the vibrator 101 and the horn 103, which causes the balance of the entire vibration block 104 to be lost, and the ultrasonic vibration energy. It interferes with transmission.

  In a general ultrasonic cosmetic device, the energy conversion efficiency is mainly about 70%, and there is a loss of about 20% due to vibration loss of the vibration block. By preventing this energy transmission loss, it is theoretically 90%. % High efficiency can be achieved.

As a method of preventing this energy transfer loss, a method in which the vibrator and the horn are firmly fixed by bolting and the layer thickness interposed between the vibrator and the horn is thinned is applied, and a high efficiency of about 90% is applied. Although there is a device that has been realized, it is not suitable for a small-scale mainstream ultrasonic cosmetic device in the megasonic range, such as a large device due to the structure that requires strong bolts, as well as prevention of vibration and vibration characteristics of the vibrator Management of tightening torque and the like is cumbersome due to the need to maintain In addition, the energy loss in the vibration block as described above becomes direct heat and heats the vibration block, causing a device failure.
JP 2002-345915 A

  Therefore, it has been desired to increase the efficiency of the vibration block and to realize a highly stable and small ultrasonic beauty apparatus. The present invention pays attention to the bonded portion of the vibrator and the horn, and selectively controls the cross-sectional structure of the bonding surface, thereby enabling vibration energy to be transferred from the vibrator to the horn at a low cost and easily. An object of the present invention is to provide an ultrasonic beauty apparatus capable of suppressing heat generation of a vibration block.

In order to achieve the above-described object, the present invention provides a vibrator that generates ultrasonic vibrations, and an ultrasonic wave that is bonded to the vibrator and that is applied to the surface of a living body skin or a target portion in a living body from an ultrasonic radiation surface having an arbitrary shape. In an ultrasonic beauty apparatus comprising an ultrasonic vibration block constituted by a horn to be transmitted and a drive circuit for driving the ultrasonic vibration block, the adhesive layer thickness of the horn and the vibrator is determined by the ultrasonic vibration block. The cross-sectional structure is made thin so as to correspond to a portion having a large ultrasonic vibration amplitude.
Further, when the vibrator has a plate shape having a distribution with the largest vibration amplitude in the central portion, the vibrator bonding surface side of the horn may have a gentle substantially convex cross-sectional structure.
Further, when the vibrator has a distribution with a small vibration amplitude in the central portion and a large vibration amplitude in the peripheral portion, the vibrator bonding surface side of the horn has a gentle substantially M-shaped cross-sectional structure. That's fine.
Further, when the vibrator has a distribution in which the vibration amplitude in the central portion is small and the vibration amplitude in the peripheral portion is large, a cross-sectional structure in which a recess or a hole is provided in the central portion of the horn may be used.
The vibrator may be ring-shaped.
Further, the vibrator bonding surface of the horn can be a rough surface.

  According to the present invention, the ultrasonic vibration energy has a cross-sectional structure in which the adhesive layer thickness between the vibrator and the horn in the vibration block is made as thin as possible corresponding to a portion where the vibration amplitude of the ultrasonic vibration energy is large. Since the vibration transmission part is a part with a large vibration amplitude, the ultrasonic vibration energy generated from the vibrator can be transmitted to the horn with high efficiency, and the energy loss between the vibrator and the horn can be reduced. . Thereby, unnecessary heat generation in the vibration block can be prevented, and stable ultrasonic beauty driving can be performed. Such a cross-sectional structure can be realized at low cost without troublesome management and high costs.

  An adhesive layer exists on the bonding surface of the horn and the vibrator for the purpose of eliminating the air layer, but the vibration amplitude at which the ultrasonic vibration energy is selectively transmitted with the minimum necessary layer thickness is selected. The ultrasonic vibration energy can be transmitted to the horn with high efficiency.

  In addition, when the vibrator is plate-shaped, the vibration amplitude at the center portion of the vibrator has the largest distribution by selectively closely contacting the vibrator bonding surface side of the horn as a gentle substantially convex cross-sectional structure. Therefore, ultrasonic vibration energy can be transmitted to the horn with high efficiency. For processing the horn, it is effective to designate a program of a trapezoidal trajectory that has a central portion as a convex surface in advance.

  In addition, when using a ring-shaped vibrator that has a small vibration amplitude in the central portion and a large vibration amplitude in the peripheral portion thereof and has a substantially M-shaped vibration amplitude distribution, the horn cross section should also be on the vibrator bonding side. By constituting the convex substantially M-shape, the ultrasonic vibration energy of the portion with the largest vibration amplitude can be transmitted to the horn with high efficiency.

  In addition, by providing a recess or hole in the center of the horn, the center portion of the horn that protrudes excessively in a convex shape can be intentionally shaved to increase the adhesion between the horn and the vibrator.

  Also, by making the horn's vibrator bonding surface rough, it is easy to eliminate the presence of an air layer by effectively interposing an adhesive layer between the horn and the vibrator, so that the ultrasonic vibration energy Transmission can be performed with high efficiency. In addition, when the electrode of the vibrator is connected to the horn and the horn is used as the electrode, the formed rough surface unevenness interferes with and contacts the vibrator electrode, so that it is easy to be electrically connected.

  Hereinafter, an ultrasonic beauty apparatus to which the present invention is applied will be described with reference to the drawings. 1 and 2 show a configuration of an ultrasonic beauty apparatus and a vibration block configuration of the apparatus. The ultrasonic beauty apparatus is an ultrasonic vibrator 1 (hereinafter referred to as a vibrator) serving as a driving source of ultrasonic vibration, and is bonded to the vibrator 1 so that the ultrasonic vibration is applied to the surface of the living body skin or the target location in the living body 2. An ultrasonic vibration block 4 (hereinafter referred to as a vibration block) composed of a horn 3 to be transmitted to the motor, a drive circuit 7 for driving the vibration block 4, and a housing 8 for holding them. a is an electric signal for driving the vibrator 1 from the drive circuit 7, and b is an ultrasonic vibration for the cosmetic treatment part of the living body 2.

  The thickness d of the horn 2 to which the vibrator 1 is bonded in the vibration block 4 is set to an integral multiple of ½ wavelength in ultrasonic vibration (the antinode and node of the wavelength are shown on the left side of FIG. 2). By applying an alternating voltage to both ends, the electric energy is converted into vibration energy (kinetic energy), and the vibration block 4 performs ultrasonic vibration. Further, the converted vibration energy is converted from the horn radiation surface into acoustic energy, and the ultrasonic vibration is transmitted to the beauty treatment unit such as the living body 2 that is in contact via the ultrasonic transmission medium 5 such as gel or gel. . The vibrator 1 has electrodes 11 on both surfaces, one lead wire 12 from the drive circuit 7 is connected to one electrode, the other electrode is conductively connected to the horn 3, and the drive circuit 7 is connected to the horn 3. To the other lead wire 13.

  By the way, in the ultrasonic beauty apparatus, it is required that ultrasonic waves can be transmitted to the surface of the living body skin or a target location in the living body with high efficiency and safety. For this reason, the vibration block 4 requires a precise design of the vibrator 1 and the horn 3, and is composed of a completely different object, mainly the ceramic vibrator 1 and the mainly metal horn 3, between them. Is filled with an adhesive or the like to form a layer and prevent the air layer from interfering with the ultrasonic vibration energy generated from the vibrator 1 from the vibrator 1 to the adhesive layer and from the adhesive layer to the horn 3. This layer thickness is the main cause of energy loss in the vibration block 4. In addition, the horn 3 requires a precise design in terms of its dimensions and flatness, and is mainly manufactured by cutting a metal block such as aluminum or an impact molded block. The cross section of the vibrator bonding surface of the horn 3 is uneven as shown in the enlarged view of FIG. Therefore, it is difficult to realize an ideal planar shape.

  FIG. 4 (this is not the present embodiment) shows the vibrator bonding surface on which the above unevenness is formed. The adhesive layer 6 between the horn 3 and the vibrator 1 has an unnecessary adhesive thickness (t2) formed to be thicker than the minimum necessary thickness (t1). Increases the thickness of the tube, which causes the transmission of ultrasonic vibration energy to be hindered. An arrow B in the figure indicates vibration energy, and the vibration energy near the center of the vibrator 1 is larger than that near the outer periphery, but energy transmission is affected by the thickness of the adhesive layer 6.

  In this specification and drawings, the amplitude of the ultrasonic vibration is described by converting the original longitudinal wave into a transverse wave for convenience of expression, the transmission direction of the ultrasonic vibration is indicated by the direction of the arrow, and the magnitude of the vibration amplitude. And the magnitude | size of vibration energy is shown by the magnitude | size of the arrow. Further, in describing the sectional view of the ultrasonic vibration block, different vertical and horizontal magnification ratios are used in order to easily express the unevenness of several μm in height existing on the bottom surface of the horn of several centimeters. Further, regarding the negative electrode of the vibrator 1, there are roughly two types: a method of turning back the electrode and a method of conducting from the horn 3. Here, the method of conducting from the horn 3 is described.

  Furthermore, in order to uniformly configure the cross section of the horn 3 with a flatness of about ± 3 μm or less and to make the entire surface have the minimum necessary thickness of the adhesive layer 6, a precise design for each material lot is required, In addition, it takes time, and when the area of the vibrator is large, a uniform and large surface pressure is required at the time of bonding, which is difficult to manage.

  Therefore, in the present embodiment, as shown in FIG. 5, as the energy loss reducing means in the vibration block 4, a structure that can selectively make the adhesive layer 6 of the main transmission path of ultrasonic vibration energy the thinnest is the horn 3 or Provided on the bonding surface of the vibrator 1, the ultrasonic vibration energy from the vibrator 1 can be transmitted to the horn 3 with high efficiency. In other words, in this example, the thickness of the adhesive layer 6 between the horn 3 and the vibrator 1 is a cross-sectional structure in which the thickness is small corresponding to a portion where the vibration amplitude of the vibration block 4 is large.

  Thereby, the portion through which the ultrasonic vibration energy passes can be selectively thinned and the vibrator 1 and the horn 3 can be brought into close contact with each other, so that the thickness of unnecessary adhesive that causes energy transmission loss is reduced. As indicated by an arrow C, vibration energy attenuation in the adhesive layer is reduced, loss of ultrasonic vibration energy is reduced, and the ultrasonic cosmetic device can be oscillated safely and stably. Furthermore, it is not necessary to manage the entire surface of the adhesive layer with the same thinnest adhesive layer thickness with high pressure as in the past, and the adhesive layer thickness of the ultrasonic transmission path at the most important position is configured to be the thinnest thickness. Is possible.

  Hereinafter, the present embodiment will be described more specifically. FIG. 6 shows the configuration of the horn and the vibrator. As described above, the bonding surface of the vibrator 1 in the horn 3 has a cross-sectional structure (D) for transmitting ultrasonic vibration energy from the vibrator 1 to the horn with high efficiency. The horn 3 is a cap-shaped flat plate. Or it is flat form, Preferably aluminum or an aluminum alloy is used, and a titanium alloy is also used depending on a use.

  The vibrator 1 and the horn 3 constitute a standing wave vibrating body in the ultrasonic thickness direction vibration. The standing wave is preferably an odd multiple of ½ wavelength in the vibrator 1 and in the horn 3. It constitutes an integral multiple of 1/2 wavelength. The boundary surface between the vibrator 1 and the horn 3 is preferably designed to be the antinode position of the standing wave in the vibration block 4 (FIG. 6). Thereby, the ultrasonic vibration energy generated from the vibrator 1 can be transmitted to the horn 3 with high efficiency, and the energy loss between the vibrator 1 and the horn 3 can be reduced.

  The vibrator 1 is preferably disc-shaped, and a ceramic material such as barium titanate or lead zirconate titanate (PZT) is preferably used as the piezoelectric material. Since the vibrator 1 mainly performs stretching vibration mainly in the thickness direction and vibrates in the radial direction from the strain at the time of vibration, it is necessary to vibrate in the radial direction with high efficiency. For this reason, the vibrator 1 has the most disk shape, and the horn 3 is most preferably flat or flat for high efficiency transmission of ultrasonic vibration energy. Furthermore, since the use of the ultrasonic cosmetic device is mainly used for the skin, the horn 3 preferably has a cap shape, which makes it easy to hold the vibration block 4.

  The cross-sectional structure (D) for transmitting ultrasonic vibration energy from the vibrator 1 to the horn 3 with high efficiency is the vibration block 4 or the vibrator 1 of the bonding surface of the vibrator 1 and the horn 3. It is preferable to have a structure in which the projection surface of a portion having a relatively large ultrasonic vibration amplitude is selectively adhered.

  In the vibration block 4, the ultrasonic vibration energy generated from the vibrator 1 is transmitted to the horn 3 and further transmitted from the horn radiation surface to the beauty treatment unit. In order to transmit ultrasonic vibration energy, a ceramic medium for the vibrator 1, a metal for the horn 3, and a medium for transmitting cosmetic treatment gel or gel are indispensable. Sonic vibration energy is reflected and hardly transmitted. Therefore, it is necessary to interpose a medium such as an adhesive between the vibrator 1 and the horn 3 where the air layer is most easily formed in order to eliminate the air layer. The thinner this layer is, the more advantageous it is for ultrasonic wave transmission. However, from the viewpoint of the performance of the adhesive, etc., as described above, it is necessary that about 20 μm is always present at least.

  In the ultrasonic cosmetic device vibrator 1, a disk-like vibrator having a diameter of about 30 mm is often used mainly for securing a cosmetic treatment area. Now, when the disk-shaped vibrator 1 is bonded to the cap-shaped flat horn 3 and vibrated, the vibration amplitude distribution becomes a center protruding type as shown in FIGS. 7 (a) and 7 (b). Ultrasonic vibration energy is transmitted through the part.

  Therefore, as described above, a structure in which the adhesive layer necessary for performance is selected and adhered so as to be positioned on the projection surface of the portion having the largest vibration amplitude, for example, the projection surface of the central portion in the disk-shaped vibrator The horn 3 is formed in a convex shape that selectively adheres to each other. This configuration is as shown in FIG. As a result, the minimum necessary adhesive layer thickness can be positioned at the site where the ultrasonic vibration energy is transmitted most, and the ultrasonic vibration energy is transmitted to the horn 3 with high efficiency as the entire vibration block, and high-efficiency vibration is achieved. It can be performed.

  The manufacturing method of such an ultrasonic horn 3 is mainly based on the process which cuts a metal lump. The horn 3 requires a precise design in terms of thickness and surface condition in order to cause ultrasonic vibration with high efficiency. For the production of a cap-shaped horn, as shown in FIGS. 8A, 8B and 8C, a metal lump 21 held by a holder 24 (schematically indicated by an arrow) is a small rod-shaped cutting drill 22 or the like. A cap-shaped horn 3 as shown in FIG. 9 is manufactured by cutting in a spiral shape. In such manufacture, the cutting surface is bent due to cutting frictional heat or the like, resulting in a concave shape. Therefore, as shown in FIG. 10, the cap-shaped horn 3 is flattened by polishing on the front side of the bottom surface 3a which is bent and has a concave shape. It is also difficult.

  For example, when the vibrator 1 is attached to the horn 3 having a concave surface of about 5 μm by a general cutting method, the minimum required adhesive layer 20 μm is located on the circumferential surface of the vibrator 1. The adhesive layer in the central portion having the largest vibration energy is 25 μm or more in total, and is 1.25 times thicker.

  Therefore, as shown in FIG. 11, a cutting program in which the center protrudes in advance is cut so that the inner surface of the horn 3 becomes a convex surface. For example, in the case of manufacturing a horn having a thickness of about 1.2 mm to which a vibrator having a diameter of about 20 mm is bonded, a program that can draw a trapezoidal locus having a height of about 10 μm at the center of about 20 mm. As a result, the bending due to frictional heat or the like is offset, and the central portion of the inner surface of the horn 3 can have a convex cutting shape. As shown in FIG. 12, a desired shape can be obtained by polishing the bottom surface 3 a of the horn 3.

  Another embodiment of the cap-shaped horn 3 is shown in FIGS. Here, the cross-sectional structure for transmitting the ultrasonic vibration energy from the vibrator 1 to the horn 3 with high efficiency is substantially M-shaped with the vibrator bonding surface 3b side as a convex surface. In this case, the portion with the largest vibration energy (E in FIG. 15) is affected by vibration transmission, but most vibration attenuation can be reduced, and the effect of lowering efficiency is reduced.

  Still another embodiment of the cap-shaped horn 3 is shown in FIGS. Here, in order to make the vibration amplitude uniform and to suppress unnecessary vibration modes, it is desirable that the vibrator 1 has a ring shape, which makes it more difficult to be influenced by the central pointed protrusion. In the vibration block 4 to which the ring-shaped vibrator 1 is bonded, the central portion does not vibrate actively, so that the vibration amplitude is small and the surrounding amplitude is large, and the vibration amplitude distribution has a substantially M-shaped cross section. For this reason, in order to thin the adhesive layer at the site where the vibration amplitude is large, the horn 3 cross section on the adhesive surface with the vibrator 1 is configured in a substantially M shape with the vibrator adhesion side convex.

  FIG. 17 shows an enlarged view of the cross section of the bonding surface. The cusp formed in the vicinity of the center φ5 mm is a processing mark when the drill is pulled out. When the horn 3 having a concave surface of 5 μm at the center was bonded to the vibrator 1 and when the horn 3 having a 5 μmM-shaped surface was bonded to the vibrator 1, the M-shaped horn was about 20% more efficient. This is because the ring-shaped vibrator 1 does not vibrate actively in the central portion indicated by F in FIG. 18, so that most vibration attenuation can be reduced. Thereby, the ultrasonic vibration energy of the part with the largest vibration amplitude can be transmitted to the horn with high efficiency. Preferably, it is desirable that the difference between the highest point and the lowest point on the vibrator bonding surface including the convex shape is an effective flatness, and that the effective flatness is about 5 μm or less.

  In addition, as shown in FIG. 19, a dent 3 or a hole 3a may be provided in the center of the horn 3 to form an M-shaped cross section, and the center portion that is excessively protruded by the drilling trace or the convex shape is intentionally shaved. Thus, the vibration attenuation of the vibration energy of the central depression or hole 3a of the horn 3 can be reduced, and the adhesion between the vibrator 1 and the horn 3 can be increased as in the case of the substantially M-shape. Highly efficient ultrasonic transmission is possible.

  Still another embodiment of the horn 3 is shown in FIG. In the same figure, the parts surrounded by a circle are shown enlarged sequentially. The bonding surface of the horn 3 with the vibrator 1 is formed into a rough surface. Preferably, it is a rough surface having a height of 3 to 15 μm and a width of about 50 to 200 μm. If there is an air layer in the layer between the vibrator 1 and the horn 3, ultrasonic vibration is not transmitted, and therefore the adhesive layer 6 is mainly filled with an adhesive. In order to fill the adhesive without biting the air layer, it is effective to make the bonding surface of the horn 3 and the vibrator 1 rough. As a result, an adhesive layer is effectively interposed between the horn 3 and the vibrator 1 so that there is no air layer, so that the transmission of ultrasonic vibration energy can be made highly efficient.

  In addition, when the electrode of the vibrator 1 is electrically connected to the horn 3 and the horn 3 is used as an electrode, the formed rough surface unevenness interferes with and contacts the electrode of the vibrator 1 so that it can be easily electrically connected. . Such a rough surface can be manufactured mainly by a cutting method by controlling the cutting drill's blade shape, rotation speed, rotation speed, and feed rate. For bonding the vibrator 1 and the horn 3, a one-component epoxy resin adhesive is used. Between the vibrator 1 and the horn 3, an adhesive layer having a uniform thickness is mainly necessary for eliminating the air layer. Further, since it is necessary to transmit ultrasonic vibration energy in the adhesive layer, a high-hardness epoxy adhesive having a hardness of about 90 (JIS D) or more is effective. Furthermore, in order to make the adhesive density between the vibrator 1 and the horn 3 uniform with a thickness of about 20 μm or less, a one-liquid property without quick drying is effective, and a low-viscosity adhesive with a viscosity of about 10 Pa · s is effective. It is. Thereby, energy loss generated in the adhesive layer can be reduced, and ultrasonic vibration energy can be transmitted with high efficiency.

  Still another embodiment of the horn 3 is shown in FIGS. The cross-sectional structure for transmitting ultrasonic vibration from the vibrator 1 with high efficiency may be configured in the vibrator 1 separately from the horn 3. FIG. 4A shows the vibrator 1 having a convex cross section, and FIG. 4B shows the vibrator 1 having a substantially M-shaped cross section. In this embodiment, since the vibrator 1 can be easily formed in the same shape by molding or the like, a target adhesive layer is easily realized. As a result, vibration attenuation in the portion (H, I) where the ultrasonic vibration amplitude is large can be reduced, and ultrasonic vibration can be transmitted to the horn 3 with high efficiency.

  The vibrator 1 in the thickness direction vibration used in the present embodiment performs stretching vibration and also vibrates in the radial direction. Therefore, the vibrator 1 can be vibrated without difficulty by making the vibrator 1 into a disk shape. In order to transmit acoustic vibration energy with high efficiency, ultrasonic vibration can be transmitted with high efficiency by forming the horn 3 in a plate shape. In addition, since the ultrasonic cosmetic device is mainly used on the skin, it is easy to handle that the horn 3 has a cap shape.

  In addition, this invention is not limited to the structure of embodiment mentioned above, A various structure is employable in the range which does not change the meaning of invention.

1 is a cross-sectional view of an ultrasonic beauty device to which the present invention is applied. Sectional drawing of the vibration block of the apparatus. Sectional measurement figure of the vibrator | oscillator adhesive surface of a horn. Sectional drawing of the vibration block which has the vibrator | oscillator adhesion surface in which the unevenness | corrugation was formed. Sectional drawing of the vibration block of the ultrasonic beauty apparatus which concerns on embodiment of this invention. Sectional drawing of the vibration block for demonstrating this embodiment concretely. (A) is a vibration amplitude distribution diagram in the present embodiment, (b) is a diagram showing a vibration amplitude actual measurement value. (A) is a perspective view just before cutting for explaining cap-shaped horn production, (b) is a top view showing a cutting direction, and (c) is a perspective view during cutting. The perspective view of the cap-shaped horn after cutting. The figure which shows carrying out surface grinding | polishing of the cap-shaped horn after cutting. The figure which shows a cutting program. The figure which shows cap-shaped surface grinding | polishing after cutting. The figure which shows the cutting program of the cap-shaped horn which concerns on other embodiment. The figure which shows carrying out surface grinding | polishing of the cap-shaped horn after cutting. Sectional drawing of a horn and vibrator with a substantially M-shaped section. (A) is sectional drawing which shows vibration amplitude distribution of the horn which concerns on other embodiment, (b) is a figure which shows vibration amplitude measurement value. FIG. Sectional drawing of a cross-section M-shaped horn and a ring-shaped vibrator. Furthermore, sectional drawing of the horn which concerns on other embodiment. Furthermore, the sequentially expanded sectional view of the horn which concerns on other embodiment. (A) is sectional drawing in the case of the vibrator cross section convex type which concerns on other embodiment, (b) is sectional drawing in the case of vibrator cross section substantially M character type. The figure for demonstrating the structure and operation | movement of the conventional ultrasonic beauty apparatus. The figure which shows an energy transmission flow same as the above. The cross-sectional enlarged view of the adhesion part of a vibrator and a horn same as the above.

Explanation of symbols

1 Ultrasonic vibrator (vibrator)
2 biological skin surface or living body 3 horn 4 ultrasonic vibration block 6 adhesive layer 7 drive circuit

Claims (6)

An ultrasonic vibration block consisting of a vibrator that generates ultrasonic vibrations and a horn that is bonded to the vibrator and transmits ultrasonic waves from an ultrasonic radiation surface of an arbitrary shape to the surface of the living body or to a target location in the living body And an ultrasonic beauty apparatus comprising a drive circuit for driving the ultrasonic vibration block,
An ultrasonic beauty apparatus characterized in that the thickness of the adhesive layer between the horn and the vibrator is a thin structure corresponding to a portion of the ultrasonic vibration block having a large ultrasonic vibration amplitude.   2. The cross-sectional structure of claim 1, wherein when the vibrator has a plate shape having a distribution with the largest vibration amplitude at a central portion, the vibrator bonding surface side of the horn has a gentle substantially convex cross-sectional structure. Ultrasonic beauty device.   When the vibrator has a distribution with a small vibration amplitude in the central portion and a large vibration amplitude in the peripheral portion, the vibrator bonding surface side of the horn has a gentle substantially M-shaped cross-sectional structure. The ultrasonic beauty apparatus according to claim 1, wherein the apparatus is an ultrasonic beauty apparatus.   When the vibrator has a distribution with a small vibration amplitude in the central portion and a large vibration amplitude in the peripheral portion, the vibrator has a cross-sectional structure in which a depression or a hole is provided in the central portion of the horn. Item 2. The ultrasonic cosmetic device according to Item 1.   The ultrasonic beauty apparatus according to claim 3 or 4, wherein the vibrator has a ring shape.   The ultrasonic beauty apparatus according to any one of claims 2 to 4, wherein the vibrator bonding surface of the horn is a rough surface.

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