JP4936187B2 - Beauty equipment - Google Patents

Description

The present invention relates to a cosmetic device using ultrasonic vibration equipment.

  Conventionally, as shown in FIG. 10, an ultrasonic vibrator 1 is connected to a horn 2, and electrical vibration is supplied to the ultrasonic vibrator 1 to convert it into mechanical vibration. An ultrasonic vibration device 40 configured to transmit ultrasonic vibration to the outside is known (see Patent Document 1). In the figure, t is the thickness of the horn 2 and d is the radial dimension of the horn 2. The ultrasonic vibration device 40 having the above-described configuration is suitably used for, for example, a beauty device. By pressing the horn 2 against the skin surface, ultrasonic vibration is transmitted toward the skin surface or the inside of the living body to obtain a desired cosmetic effect. It is like that.

  FIG. 11 shows ideal impedance characteristics in the thickness direction of the horn 2 included in such an ultrasonic vibration device 40. FIG. 12 shows the impedance characteristics when there is spurious. As shown in the figure, when the above-mentioned spurious occurs at a frequency fd1 within the range (oscillation range) from the resonance frequency fr to the anti-resonance frequency fa where high ultrasonic wave generation efficiency can be obtained, a desired output is obtained. It becomes difficult.

Here, it is conceivable that the cause of the spurious is that the radial vibration of the horn 2 affects the vibration in the thickness direction. In particular, when a large resonance occurs in the radial direction, this resonance has a large influence, and the spurious is generated in the impedance characteristic in the thickness direction. However, as shown in FIG. 10, the horn 2 of the conventional ultrasonic vibration device 40 has a radial dimension that is constant along the thickness direction in most of the horn 2, and a large resonance tends to occur in the radial direction. It was.
JP 2007-260366 A

The present invention was invented in view of the above problems, a cosmetic device using ultrasonic vibration equipment which may cause spurious is prevented between the anti-resonance frequency from the resonant frequency in the impedance characteristics in the thickness direction The issue is to provide.

In order to solve the above-described problems, the present invention relates to an ultrasonic transducer 1 that generates ultrasonic vibrations, an ultrasonic transmission that transmits ultrasonic waves toward a connection surface 2b to which the ultrasonic transducer 1 is connected, and a target location. An ultrasonic vibration device 40 including the horn 2 having the surface 2a as a reverse flat plate surface is incorporated in the head cover 11, and the beauty device 60 uses the ultrasonic transmission surface 2a of the horn 2 as a skin contact surface. The horn 2 has a tapered portion 3 whose radial dimension gradually decreases toward the ultrasonic transmission surface 2a, and is provided with a curved portion 5 at a boundary portion between the tapered portion 3 and the ultrasonic transmission surface 2a. 2b and the ultrasonic wave transmitting surface 2a, in the vicinity of the connecting surface 2b, there is a flange 6 whose radial dimension is kept constant along the thickness direction. A concave groove portion 7 that is maintained at a constant radial dimension along the thickness direction is provided over the entire circumference in a portion adjacent to the flange portion 6 on the 2a side, and between the tapered portion 3 and the concave groove portion 7. And a plate-like member provided with a body portion 4 in which the radial dimension is kept constant along the thickness direction. Each region of the flange portion 6, the concave groove portion 7, and the body portion 4 of the horn 2 is less than 50% of the dimension between the connection surface 2 b and the ultrasonic wave transmission surface 2 a, and the body portion 4 of the horn 2 is covered with the head cover. 11 is fitted between the horn 2 and the head cover 11 in a state of being fitted into the opening 11, and the flange 6 is pulled out of the horn 2 through the O-ring 12. It is provided to be stopped. In the ultrasonic vibration device 40 having the above configuration, the occurrence of large resonance in the radial direction of the horn 2 is suppressed. Thereby, in the impedance characteristic of the horn 2 in the thickness direction, the occurrence of spurious between the resonance frequency and the anti-resonance frequency is suppressed. Therefore, the beauty device 60 can prevent the occurrence of spurious in the impedance characteristics of the horn 2 and obtain a desired output.

Here, “the area where the radial dimension is kept constant along the thickness direction is less than 50% of the dimension between the connection surface 2 b and the ultrasonic transmission surface 2 a” means that region. This means that only a single region in which the radial dimension is maintained with a specific fixed dimension does not exceed 50% of the dimension between the connection surface 2b and the ultrasonic wave transmission surface 2a . Therefore, even when there are a plurality of regions in which the radial dimension is maintained with a fixed dimension peculiar to the region, each region alone is 50% or more of the dimension between the connection surface 2b and the ultrasonic transmission surface 2a. Keep it from happening.

Further, the horn 2, together with the radial dimensions have a tapered portion 3 gradually decreases toward the ultrasonic wave emitting surface 2a, providing the projecting curved portion 5 at the boundary between the tapered portion 3 and the ultrasonic wave emitting surface 2a since those, together with causing a large resonant in the radial direction of the horn 2 can be effectively suppressed by the presence of the tapered portion 3, good contact is when used against the ultrasonic wave emitting surface 2a on the skin surface or the like The burden can be reduced.

Further, since the horn 2 has the flange portion 6 in the vicinity of the connection surface 2b, the presence of the flange portion 6 having a large diameter is suppressed from causing a large resonance in the radial direction of the horn 2, and this The ultrasonic vibration device 40 can be incorporated into the beauty device 60 by using the collar portion 6 for retaining or the like.

Further, since the horn 2 is provided with the concave groove portion 7 over the entire circumference on the ultrasonic transmission surface 2a side of the flange portion 6 and adjacent to the flange portion 6, Due to the presence of the concave groove portion 7, generation of large resonance in the radial direction of the horn 2 can be suppressed, and an O-ring 12 can be attached using the concave groove portion 7 to prevent intrusion of gel or the like.

According to the first aspect of the present invention, by incorporating an ultrasonic vibration device in which spurious is prevented from occurring between the resonance frequency and the anti-resonance frequency in the impedance characteristic in the thickness direction , the spurious is generated in the impedance characteristic of the horn. There is an effect that it becomes a beauty device capable of preventing and obtaining a desired output.

In addition to the above effect, the invention according to claim 1 effectively suppresses large resonance in the radial direction of the horn due to the presence of the tapered portion, and applies the ultrasonic wave transmitting surface to the skin surface or the like. When used, the presence of the tapered portion and the bent portion provides an effect that the hit is good and the burden is reduced.

The invention according to claim 1, in addition to the above effects, together with causing a large resonant in the radial direction of the horn is suppressed by the presence of the flange, beauty device ultrasonic vibration device utilizing the flange portion There is an effect that it can be incorporated into.

The invention according to claim 1, in addition to the above effects, together can be suppressed to produce a large resonant in the radial direction of the horn by the presence of the recessed groove portion, mounting the O-ring by using the groove portion, Gel It is possible to prevent intrusion of the like.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. FIG. 1 shows an ultrasonic vibration device 40 of a first example in the embodiment of the present invention. The radial direction used in the text is the x direction in the figure, and the thickness direction is the y direction in the figure.

  The ultrasonic vibration device 40 includes an ultrasonic vibrator 1 that generates ultrasonic vibrations, and a horn 2 that is formed in a flat plate shape (specifically, a disk shape) using a metal such as aluminum. The horn 2 has a connection surface 2b for bonding and fixing the ultrasonic transducer 1 and an ultrasonic transmission surface 2a for transmitting ultrasonic waves toward a target location as opposite flat plate surfaces. .

  The side surface of the horn 2 having a flat plate shape includes a tapered portion 3 whose radial dimension gradually changes along the thickness direction, and a body portion 4 whose radial dimension is maintained at a constant dimension D1 along the thickness direction. . The taper portion 3 is formed on the side of the ultrasonic transmission surface 2a on the side surface of the horn 2, and is a truncated cone side surface whose radial dimension gradually decreases toward the ultrasonic transmission surface 2a. The taper angle α of the taper portion 3 is preferably formed to be 40 ° or less, and here it is formed to 38 °. A curved portion 5 is formed over the entire circumference at the boundary portion between the tapered portion 3 and the ultrasonic transmission surface 2 a, and the tapered portion 3 and the ultrasonic transmission surface 2 a are smoothly connected via the curved portion 5.

  Moreover, the trunk | drum 4 is formed in the connection surface 2b side of the horn 2 side surface, and becomes a cylindrical side surface with a constant radial direction dimension until it reaches the connection surface 2b. In the horn 2 composed of the body portion 4 and the taper portion 3, the taper portion 3 is set so that the ultrasonic transmission surface 2a and the body portion 4 have a radial dimension difference of 4 mm or more.

  For example, when the ultrasonic vibration device 40 is incorporated in the beauty device 60 described later, the tapered portion 3 and the projecting portion 5 of the horn 2 improve the skin contact of the ultrasonic transmission surface 2a with respect to the skin surface. This is a part that can be reduced (see FIG. 6, FIG. 8, etc.). In addition, the body 4 of the horn 2 is fitted with the opening of the head cover 11 of the beauty device 60 without any gap when the ultrasonic vibration device 40 is used in the beauty device 60 which will be described later. This is the part that can be held.

  And in the said horn 2, the area | region in which the taper part 3 is formed in the thickness direction is set so that it may become 50% or more of the whole. Thereby, the area | region of the trunk | drum 4 where the radial direction dimension is maintained to the fixed dimension D1 along the thickness direction is less than 50% of the whole. In the taper portion 3, the radial dimension (and consequently the resonance frequency and vibration characteristics in the radial direction) gradually changes along the thickness direction, so that no significant resonance occurs in the taper portion 3 in the radial direction. Generation of large resonance in the radial direction is suppressed. That is, it is possible to effectively suppress spurious in impedance characteristics in the thickness direction due to radial vibration of the horn 2.

  Note that the tapered portion 3 is not limited to a linear structure in a side view in which the radial dimension changes at a constant rate along the thickness direction, and is, for example, an arc shape in a side view as shown in the modified example of FIG. It may be a concave curved surface. In this case, the taper portion 3 has a structure in which the ratio of decreasing the radial dimension along the thickness direction gradually decreases as the ultrasonic wave transmitting surface 2a is approached. Further, as shown in FIG. 2B, the tapered portion 3 may be formed in the whole thickness direction of the horn 2.

  Further, the position where the ultrasonic vibrator 1 is attached to the horn 2 is set so that the center position of the disk-shaped ultrasonic vibrator 1 is shifted from the center position of the horn 2 which is also disk-shaped. Is also suitable. According to this, resonance in the radial direction is less likely to occur in the horn 2, and it is further suppressed that spurious is generated between the resonance frequency and the antiresonance frequency in the impedance characteristics in the thickness direction.

  Next, the ultrasonic vibration device 40 of the second example in the embodiment of the present invention will be described based on FIG. 3, but detailed description of the same configuration as the first example described above is omitted, and what is the first example? Different characteristic configurations will be described in detail below.

  The side surface of the horn 2 provided in the ultrasonic vibration device 40 of this example has a tapered portion 3 having a truncated cone shape whose radial dimension gradually changes along the thickness direction, and a constant radial dimension along the thickness direction. A cylindrical side surface body portion 4 maintained at D1 and a cylindrical side surface flange portion 6 whose radial dimension is maintained at a constant dimension D2 along the thickness direction are connected from the ultrasonic transmission surface 2a side to the connection surface. They are formed in this order toward the 2b side. The collar portion 6 formed adjacent to the connection surface 2b has a radial dimension larger than that of the body portion 4, and is used by incorporating an ultrasonic vibration device 40 into a beauty device 60 described below, for example. In this case, the horn 2 can be prevented from coming off while the body 4 is fitted in the opening of the head cover 11 of the beauty device 60 (see FIG. 6 and the like).

  And in the said horn 2, the area | region of the trunk | drum 4 where the radial direction dimension is maintained by the fixed dimension D1 along the thickness direction, and the radial direction dimension are maintained by another fixed dimension D2 along the thickness direction. The region of the flange 6 is set so that all are less than 50% of the whole in the thickness direction. As a result, the occurrence of large resonance in the radial direction of the horn 2 is suppressed. That is, the occurrence of spurious between the resonance frequency and the anti-resonance frequency in the impedance characteristic in the thickness direction due to the vibration in the radial direction of the horn 2 is suppressed.

  Next, a third example of the ultrasonic vibration device 40 according to the embodiment of the present invention will be described with reference to FIG. 4, but the detailed description of the same configurations as those of the first and second examples described above will be omitted. A characteristic configuration different from the first example and the second example will be described in detail below.

  The side surface of the horn 2 provided in the ultrasonic vibration device 40 of this example has a tapered portion 3 having a truncated cone shape whose radial dimension gradually changes along the thickness direction, and a constant radial dimension along the thickness direction. A cylindrical side surface body portion 4 maintained at D1, a cylindrical side surface concave groove portion 7 that is maintained at another constant dimension D3 along the thickness direction, and a radial direction along the thickness direction. A cylindrical side face-like flange portion 6 whose dimension is maintained at another constant dimension D4 is formed in this order from the ultrasonic wave transmitting surface 2a side to the connecting surface 2b side.

  The concave groove portion 7 has a radial dimension smaller than that of the body portion 4 and the flange portion 6, and is located on the ultrasonic wave transmitting surface 2 a side of the flange portion 6 and in a portion adjacent to the flange portion 6. A groove is provided around the circumference. For example, when the ultrasonic vibration device 40 is incorporated in a beauty device 60 described later, the concave groove portion 7 is a portion that can prevent a gel or the like from entering by fitting a rubber product such as an O-ring 12. (See FIG. 6, FIG. 7, etc.).

  In the horn 2, the regions of the body portion 4, the groove portion 7, and the flange portion 6 whose radial dimensions are maintained at the constant dimensions D1, D3, and D2 are all 50 in the thickness direction. It is set to be less than%. As a result, the occurrence of large resonance in the radial direction of the horn 2 is suppressed. That is, the occurrence of spurious between the resonance frequency and the anti-resonance frequency in the impedance characteristic in the thickness direction due to the vibration in the radial direction of the horn 2 is suppressed.

  Next, the beauty device 60 provided with the ultrasonic vibration device 40 of the present invention will be described. 5 to 7 show a head block 50 provided with the ultrasonic vibration device 40, and FIGS. 8 and 9 show a cosmetic device 60 incorporating the head block 50. The beauty device 60 supplies electrical vibration to the pair of head blocks 50 including the ultrasonic vibration device 40, the head support block 51 that supports the pair of head blocks 50, and the ultrasonic vibrator 1 of the ultrasonic vibration device 40. Thus, the main body is composed of a gripping block 9 including a control circuit 8 that generates ultrasonic vibrations. Although the cosmetic device 60 provided with the ultrasonic vibration device 40 of the third example in one head block 50 will be described here, the ultrasonic vibration device 40 of the first example or the second example may be provided. Of course.

  First, the configuration of one head block 50 including the ultrasonic vibration device 40 of the third example will be described with reference to FIGS. The head block 50 includes an ultrasonic vibration device 40 including the ultrasonic vibrator 1 and the horn 2, a head base 10 forming the bottom of the head block 50, and a cylindrical head cover 11 penetrating both ends. The head cover 11 engages with the flange portion 6 provided on the side surface of the horn 2 and engages with the hook 30 provided on the side surface of the head base 10. By attaching and fixing the horn 2 to the head base 10 via the head cover 11, the ultrasonic transmission surface 2 a of the horn 2 is held in a state of protruding outward from the opening of the head cover 11.

  The concave groove portion 7 on the side surface of the horn 2 is for fitting the O-ring 12, and the O-ring 12 is sandwiched between the horn 2 and the head cover 11 in the assembled state so that the radial gap between the two horns 2 and 11 can be completely removed. It is designed to fill the circumference without any gaps. A concave groove portion 32 is also provided on the side surface of the head base 10, and an O-ring 33 is fitted into the concave groove portion 32. Further, a plurality of notch portions 28 for preventing rotation are provided at the peripheral edge portion of the connection surface 2b of the horn 2, and the locking rib 29 provided on the head base 10 is fitted into the notch portion 28, whereby the horn 2. Stop rotation.

  Further, in the head block 50, a transducer side connection terminal 13 and a horn side connection terminal 14 for supplying power to the ultrasonic transducer 1 are provided. The transducer-side connection terminal 13 is directly electrically connected to the electrode 15 by being elastically contacted with one of a pair of electrodes 15 (see FIG. 7) that the ultrasonic transducer 1 has on the front and back. . The horn-side connection terminal 14 is electrically connected to the other electrode 15 of the ultrasonic transducer 1 through the horn 2 by being elastically contacted with the connection surface 2 b of the horn 2. Both connection terminals 13 and 14 are fixed to the head base 10 and electrically connected to a control circuit 8 in a gripping block 9 described later via a lead wire (not shown).

  The head block 50 is connected to the head support block 51 via the head ring 16 so as to be floatable and swingable. The head support block 51 includes a head base 17 to which the head ring 16 is attached and fixed, and a pair of base cases 18 that are fixed so as to cover the head base 17.

  The other head block 50 of the pair of head blocks 50 has the same basic configuration as that of the one head block 50 described with reference to FIGS. 5 to 7, but the ultrasonic transmission surface 2 a of the horn 2. Is small in area and can be suitably used for nasal care, and is connected to the head support block 51 through the head ring 19 so as not to swing.

  Next, a basic configuration of the grip block 9 to which the head support block 51 is connected via the access ring 31 will be described. The holding block 9 includes a cylindrical housing 20, a lower cover 21 that forms the bottom of the housing 20, a control circuit 8 and a rechargeable battery 22 that are incorporated in the housing 20, and an operation switch 23. The operation switch 23 includes a switch rubber 24, a switch pressing plate 25, a switch shaft 26, and a switch panel 27. The rechargeable battery 22 and the operation switch 23 are electrically connected to the control circuit 8 via lead wires (not shown).

  In the beauty device 60 having the above-described configuration, when the operation switch 23 is operated to drive one or both of the pair of head blocks 50, the connection terminal 13 is connected to the ultrasonic transducer 1 of each head block 50. , 14 from the control circuit 8 is supplied. Then, the ultrasonic vibration is generated in the ultrasonic vibrator 1 by converting the electric vibration into the mechanical vibration, and this ultrasonic vibration is transmitted to the horn 2. Therefore, by using the ultrasonic transmission surface 2a of the horn 2 as the skin contact surface while holding the grip block 9 with one hand, the ultrasonic vibration generated from the ultrasonic transducer 1 can be applied to the skin surface and further to the target location in the living body. The desired beauty effect can be obtained through transmission.

By the way, this cosmetic device 60 uses the ultrasonic vibration device 40 of the third example as the ultrasonic vibration means of one head block 50, and the horn 2 of the ultrasonic vibration device 40 has a radial dimension along the thickness direction. There predetermined dimension D1, D3, D2 region is maintained (i.e. barrel 4, the groove portion 7, the thickness of the flange portion 6) is, 50% of the dimension between both the connecting surface 2b and the ultrasonic wave emitting surface 2a Is less than Accordingly, the occurrence of large resonance in the radial direction of the horn 2 is suppressed, and the occurrence of spurious between the resonance frequency and the anti-resonance frequency is suppressed in the impedance characteristics in the thickness direction.

  In addition, since the horn 2 has a flat plate shape, it can be easily molded and can be reduced in size, weight, and cost. In addition, since the horn 2 is formed with a tapered portion 3 and a curved portion 5 that gradually decrease in the radial direction toward the ultrasonic transmission surface 2a, it is possible to cause a large resonance in the radial direction of the horn 2 to be tapered. While being more effectively suppressed by the presence of the portion 3, the skin contact when using the ultrasonic wave transmitting surface 2a against the skin surface is good.

  Furthermore, by forming the body 4, the recessed groove 7, and the flange 6 having different radial dimensions from each other in the horn 2, not only the occurrence of large resonance in the radial direction of the horn 2 is suppressed, When the ring-shaped head cover 11 is covered after the O-ring 12 is fitted in the concave groove portion 7, the opening edge portion 11a of the head cover 11 hits the body portion 4 of the horn 2 and fits without gap as shown in FIG. The O-ring 12 is elastically contacted with the inner surface of the head cover 11 to reliably prevent the intrusion of gel and the like, and the collar 6 is locked to the opening edge 11a of the head cover 11 with the O-ring 12 being sandwiched therebetween. It has a structure that prevents it from coming off.

  Note that the apparatus including the ultrasonic vibration device 40 having the above-described configuration is not limited to the beauty device 60, and various types of diagnosis, processing, bonding, cleaning, agent penetration promotion, diffusion, dispersion, emulsification, atomization, and the like are performed. Any device that performs sonication is applicable.

It is a side view of the ultrasonic vibration apparatus of the 1st example in the embodiment of the present invention. (A), (b) is a modification of an ultrasonic vibration apparatus same as the above. It is a side view of the ultrasonic vibrator of the 2nd example in an embodiment of the present invention. It is a side view of the ultrasonic vibration apparatus of the 3rd example in the embodiment of the present invention. It is a side view of a head block provided with an ultrasonic vibration device same as the above. It is a sectional side view of a head block same as the above. It is a disassembled perspective view of a head block same as the above. It is a side view of the beauty apparatus provided with the head block same as the above. It is a disassembled perspective view of a beauty apparatus same as the above. It is explanatory drawing of the conventional ultrasonic vibration apparatus. It is explanatory drawing which shows the ideal impedance characteristic of a horn same as the above. It is explanatory drawing which shows the case where a spurious has arisen in the impedance characteristic of the horn same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ultrasonic vibrator 2 Horn 2a Ultrasonic transmission surface 2b Connection surface 3 Taper part 6 Gutter part 7 Concave groove part 50 Ultrasonic vibration apparatus 60 Beauty apparatus

Claims (1)

An ultrasonic vibrator that generates ultrasonic vibrations, and a horn having a connecting surface to which the ultrasonic vibrator is connected and an ultrasonic wave transmitting surface that transmits ultrasonic waves toward a target location as an opposite flat plate surface. An ultrasonic vibration device incorporated in the head cover, and a beauty device using the ultrasonic transmission surface of the horn as the skin contact surface ,
The horn has a tapered portion that gradually decreases in the radial direction toward the ultrasonic transmission surface, and has a curved portion at a boundary portion between the tapered portion and the ultrasonic transmission surface, and a connection surface, an ultrasonic transmission surface, A portion having a flange portion whose radial dimension is kept constant along the thickness direction in a portion near the connecting surface between the two, and a portion that is on the ultrasonic wave transmission surface side of the flange portion and is adjacent to the flange portion In addition, a concave groove portion having a constant radial dimension along the thickness direction is provided over the entire circumference, and the radial dimension is maintained constant along the thickness direction between the tapered portion and the concave groove portion. A plate-like member provided with a body portion,
Each region of the flange, the groove and the body of the horn is less than 50% of the dimension between the connection surface and the ultrasonic wave transmission surface,
With the body of the horn fitted into the opening of the head cover, an O-ring fitted into the groove is sandwiched between the horn and the head cover, and the collar portion prevents the horn from coming off via the O-ring. A beauty device provided to perform .

Images