JP4748134B2 - Ultrasonic generator and beauty apparatus equipped with the same - Google Patents

Description

  The present invention includes an ultrasonic generator including a plurality of ultrasonic transducers, and an ultrasonic generator capable of obtaining a cosmetic effect by applying ultrasonic vibration generated by the plurality of ultrasonic generators to the skin. Relates to a beauty device.

Conventionally, as this type of technology, for example, those described in the following documents are known (see Patent Document 1). In this document 1, a first ultrasonic oscillator that is arranged inside a first pad and oscillates ultrasonic vibration of a first frequency, and a second frequency that is arranged inside a second pad. And a switching means for selectively operating the first ultrasonic transducer or the second ultrasonic transducer, and one output transformer and one A technique is described that enables massage using ultrasonic waves of different frequencies by a single device by selectively driving and controlling two ultrasonic transducers with a control circuit.
JP 2001-252323 A

  In a conventional beauty apparatus having a plurality of ultrasonic transducers, the load on the plurality of ultrasonic transducers is the skin to which the ultrasonic vibration generated by each ultrasonic transducer is applied, but the load (skin) is There was no means for detecting whether or not each pad provided corresponding to each ultrasonic transducer was in contact with the pad in an appropriate state.

  For this reason, the user of the beauty apparatus determines whether or not the pad is in contact with the skin in a state suitable for producing a cosmetic effect by bringing any one of the plurality of pads into close contact with the skin. I could not. For this reason, when the pad is not properly in close contact with the skin, the cosmetic effect on the skin is reduced, and in such a state, for example, when the apparatus is operated at full power and strong ultrasonic vibration is generated In some cases, the amount of heat generated at the pad increased, and there was a risk of adverse effects on the skin.

  Therefore, the present invention has been made in view of the above, and an object of the present invention is to provide an ultrasonic generator capable of detecting each load of a plurality of ultrasonic transducers. .

  Another object is to generate ultrasonic waves that can detect the contact state between a device having a plurality of ultrasonic transducers and the skin and appropriately use the device based on the detection results to provide a cosmetic effect. It is to provide a beauty device provided with the device.

  In order to achieve the above object, an ultrasonic generator according to the present invention transmits ultrasonic vibration generated by an ultrasonic vibrator to a load via a probe head, and a pair of the ultrasonic vibrator and the probe head. The first feature is that the ultrasonic generator includes a plurality of detecting means for detecting whether each of the probe heads is in a loaded state or an unloaded state.

  The ultrasonic generator according to the present invention is the ultrasonic generator of the first feature, wherein the detection means is provided individually for each of the plurality of probe heads. And

  The ultrasonic generator according to the present invention is the ultrasonic generator of the first feature, wherein the detection means is shared by the plurality of probe heads as a third feature.

  Moreover, the beauty apparatus provided with the ultrasonic generator according to the present invention includes any one of the ultrasonic generators according to the first to third characteristics, and the ultrasonic wave via the probe head. The ultrasonic vibration generated by the vibrator is applied to the skin to have a cosmetic effect.

  With the ultrasonic generator of the first feature according to the present invention, it is possible to detect the load of each of a plurality of ultrasonic transducers included in the ultrasonic generator.

  In the ultrasonic generator of the second feature according to the present invention, load detection accuracy can be improved and erroneous detection can be suppressed.

  In the ultrasonic generator according to the third aspect of the present invention, the configuration can be simplified and the size can be reduced.

  In the cosmetic device including the ultrasonic generator according to the present invention, the contact state between the device including the plurality of ultrasonic transducers and the skin is detected, and the device is appropriately used based on the detection result, and the cosmetic effect Can bring.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS The best embodiment for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a diagram showing a configuration of an ultrasonic generator according to Embodiment 1 of the present invention. The ultrasonic generator of Example 1 shown in FIG. 1 includes an ultrasonic control block 1, a first head block 2a including a ultrasonic transducer, and a second head block 2b.

  The first head block 2a is, for example, an ultrasonic transducer (not shown) made of a piezoelectric element and joined with the ultrasonic transducer, and is given ultrasonic vibration generated by the ultrasonic transducer. The probe head (not shown) is configured to contact the load such as the gel substance or the living body skin and transmit the ultrasonic vibration to the load.

  Similarly, the second head block 2b is bonded to an ultrasonic vibrator (not shown) made of, for example, a piezoelectric element, and the ultrasonic vibrator generated by the ultrasonic vibrator is applied thereto. For example, a probe head (not shown) that transmits ultrasonic vibration to the load in contact with a load such as a liquid, a gel-like substance, or a living body skin is configured.

  The piezoelectric element constituting the ultrasonic vibrator has impedance frequency characteristics as shown in FIG. 2, for example, and an AC signal having a frequency between the resonance frequency (fr) and the anti-resonance frequency (fa) is supplied. To change the electrical energy into mechanical energy to obtain ultrasonic vibration.

  In addition, the ultrasonic vibrator has different impedance frequency characteristics, as shown in FIG. That is, in FIG. 2, in the frequency region between the frequency (fm) and the resonance frequency (fr) where the impedance is the same between the no load and the load, the impedance at the no load is higher than the impedance at the load. Get smaller. On the other hand, in the frequency region between the frequency (fm) and the anti-resonance frequency (fa) at which the impedance is the same between the unloaded state and the loaded state, the unloaded impedance is larger than the loaded impedance. Note that when the unloaded state and the loaded state to be detected differ depending on the load, the impedance frequency characteristics are obtained in advance by experiments or the like according to the respective states.

  The ultrasonic transducers included in the first head block 2a and the ultrasonic transducers included in the second head block may have the same or different shapes such as diameters, and may have the same or different driving frequencies. These are appropriately set as design matters according to the intended use of the apparatus.

  Note that the number of head blocks, that is, ultrasonic transducers, is not limited to two, and may be three or more.

  Returning to FIG. 1, the ultrasonic control block 1 functions as means for driving and controlling the first head block 2a and the second head block 2b, and includes a first drive circuit 11a, a second drive circuit 11b, an oscillation circuit 12, An output adjustment circuit 13, a first detection circuit 14a, a second detection circuit 14b, and a CPU 15 are provided.

  The first drive circuit 11a amplifies the AC signal supplied from the oscillation circuit 12 at a drive frequency set in advance with respect to the ultrasonic transducer of the first head block 2a to the amplitude instructed from the output adjustment circuit 13, The amplified drive signal is supplied to the ultrasonic transducer of the first head block 2a to drive the ultrasonic transducer. Similarly, the second drive circuit 11b converts the AC signal supplied from the oscillation circuit 12 at a drive frequency set in advance to the ultrasonic transducer of the second head block 2b to an amplitude instructed from the output adjustment circuit 13. The amplified drive signal is amplified and supplied to the ultrasonic transducer of the second head block 2b to drive the ultrasonic transducer.

  The oscillation circuit 12 generates an AC signal having a driving frequency corresponding to each ultrasonic transducer, and applies the generated AC signal to the corresponding first driving circuit 11a and second driving circuit 11b.

  The output adjustment circuit 13 instructs the first drive circuit 11a and the second drive circuit 11b on the amplitude of the drive signal applied to each ultrasonic transducer corresponding to each ultrasonic transducer, and the ultrasonic wave applied to the load. The intensity of vibration is set individually and arbitrarily for each ultrasonic transducer within a settable range. The output adjustment circuit 13 instructs the amplitude based on, for example, an instruction given from the outside.

  In the first detection circuit 14a, the probe head of the first head block 2a is in contact with the load in a normal state (load state) set in advance according to the load, or in an abnormal state (no load state). Detects whether it is in contact with the load. If the load is skin, for example, and a cosmetic effect is achieved by applying ultrasonic vibration to the skin, whether the probe head is in contact with the skin in a state that is in close contact with the skin and suitable for the cosmetic effect Determine whether.

  Similarly, the second detection circuit 14b is configured such that the probe head of the second head block 2b is in contact with the load in a normal state (load state) set in advance according to the load or is not normal (no load). ) Is in contact with or not in contact with the load. If the load is skin, for example, and a cosmetic effect is achieved by applying ultrasonic vibration to the skin, whether the probe head is in contact with the skin in a state that is in close contact with the skin and suitable for the cosmetic effect Determine whether.

  This determination is made based on the method described below.

  Since the ultrasonic transducer has impedance frequency characteristics as shown in FIG. 2, the impedance frequency characteristics are used. For example, the diameter of the ultrasonic transducer of the first head block 2a is larger than the diameter of the second head block 2b, and each impedance frequency characteristic is, for example, FIG. 3 (the ultrasonic transducer of the first head block 2a When the ultrasonic transducer of the second head block 2b has the characteristics as shown in the second transducer), the drive frequency (the impedance at the time of no load becomes larger than the impedance at the time of load ( Each ultrasonic transducer is driven at fd).

  In such a case, as shown in FIG. 3, when the load is changed from the no-load state, the impedance of each ultrasonic transducer is lowered. Therefore, the relationship between the current flowing through the ultrasonic transducer and the frequency is shown in FIG. As shown, the impedance decreases and the current flowing through the ultrasonic transducer increases. On the other hand, when the load state is changed to the no-load state, the impedance of each ultrasonic transducer increases, so that the current flowing through the ultrasonic transducer decreases.

  Based on this difference in current between no load and load, as shown in FIG. 4, a threshold corresponding to each ultrasonic transducer is set between the current at no load and the current at load. Set (threshold value th1 of the first transducer, threshold value th2 of the second transducer), detect the drive current supplied to the ultrasonic transducer, and set the threshold value for which the detected drive current is set When the value exceeds the threshold value, it is determined that the load state is established. On the other hand, when the value is less than the threshold value, it is determined that the load state is not loaded.

  Therefore, the first detection circuit 14a detects the drive current supplied from the first drive circuit 11a to the ultrasonic transducer of the first head block 2a, and the detected drive current is preset as described above. When the drive current exceeds the threshold value th1 in the comparison result, the probe head of the first head block 2a is in normal contact with the load and On the other hand, if the drive current is lower than the threshold value th1, it is determined that the probe head of the first head block 2a is in a no-load state where the load is not normally in contact with the load.

  Similarly, the second detection circuit 14b detects the drive current supplied from the second drive circuit 11b to the ultrasonic transducer of the second head block 2b, and is preset as described above with the detected drive current. When the drive current exceeds the threshold th2 in the comparison result, the probe head of the second head block 2b is in normal contact with the load and is in a load state. On the other hand, if the drive current is lower than the threshold value th2, it is determined that the probe head of the second head block 2b is in a no-load state where the probe head is not normally in contact with the load.

  The CPU 15 functions as a control center that controls the operation of the ultrasonic control block 1 and includes resources such as an arithmetic processing device, a storage device, and an input / output device necessary for a computer that controls various operation processes based on a program. For example, it has functions such as a microcomputer. The CPU 15 sends a command to components requiring control of the ultrasonic control block 1 including the oscillation circuit 12 and the output adjustment circuit 13 based on a control logic (program) held in advance, and detects the load described below. It supervises and controls all operations required for drive control of the ultrasonic transducer including the operations.

  When the CPU 15 receives the detection results of the first detection circuit 14a and the second detection circuit 14b and determines that the probe head corresponding to each ultrasonic transducer is in an unloaded state, the CPU 15 The supplied drive current may be reduced or stopped, and the fact that there is no load may be notified to the outside by a notification means such as sound or LED light.

  In such a configuration, the ultrasonic transducer of the first head block 2a or the ultrasonic transducer of the second head block 2b is selectively driven based on a drive instruction given from the outside. For example, when driving of the ultrasonic transducer of the first head block 2a is instructed, an AC signal having a drive frequency set in advance corresponding to the ultrasonic transducer of the first head block 2a is generated by the oscillation circuit 12, The generated AC signal is given to the first drive circuit 11a. Further, the intensity of vibration of the ultrasonic transducer of the first head block 2a given from the outside, that is, the voltage amplitude of the drive signal supplied to the ultrasonic transducer (amplification factor of the AC signal output from the oscillation circuit 12). Is supplied from the output adjustment circuit 13 to the first drive circuit 11a.

  As a result, the AC signal having the drive frequency supplied from the oscillation circuit 12 is amplified by the first drive circuit 11a at the amplification factor supplied from the output adjustment circuit 13, and a drive signal is generated. The ultrasonic transducer of the first head block 2a is driven by being supplied to the ultrasonic transducer of the first head block 2a.

  In such a driving state, the current of the driving signal supplied from the first driving circuit 11a to the ultrasonic transducer of the first head block 2a is monitored by the first detection circuit 14a, and this monitored driving current is first detected. When the above-described threshold value th1 is exceeded, it is determined that the probe head of the first head block 2a is in normal contact with the load and is in a loaded state. It is determined that the probe head of the block 2a is in an unloaded state in which the probe head is not normally in contact with the load.

  Also when the ultrasonic transducer of the second head block is driven by the second drive circuit 11b, the second detection circuit 14b determines the loaded state or the no-load state in the same manner as described above.

  As described above, in the first embodiment, in the ultrasonic generator provided with a plurality of ultrasonic transducers, whether each of the plurality of ultrasonic transducers is loaded or unloaded is determined. It becomes possible to discriminate. In addition, since a detection circuit is provided for each ultrasonic transducer, the detection circuit is individually and independently connected to each ultrasonic transducer according to vibration characteristics such as impedance frequency characteristics and temperature characteristics of each ultrasonic transducer. It is possible to set the threshold value described in (1). Thereby, detection accuracy can be improved and erroneous detection can be prevented.

  FIG. 5 is a diagram showing the configuration of an ultrasonic generator according to Embodiment 2 of the present invention. The feature of the second embodiment shown in FIG. 5 is that the first detection circuit 14a and the second detection circuit 14b of FIG. 1 are shared by the detection circuit 51 as compared with the device of the first embodiment, and FIG. The ultrasonic control block 5 is configured by providing a CPU 52 to which a function for giving threshold information to the detection circuit 51 is added in addition to the function of the CPU 15 shown in FIG.

  The detection circuit 51 has the functions of the first detection circuit 14a and the second detection circuit 14b described above, and a threshold value th1 and a second head corresponding to the ultrasonic transducer of the first head block 2a provided from the CPU 52. In response to the threshold value th2 corresponding to the ultrasonic transducer of the block 2b, the state of the load is determined in the same manner as described above based on the threshold values th1 and th2.

  As described above, in the second embodiment, by using a common detection circuit, the configuration can be simplified and reduced in size as compared with the first embodiment.

  FIG. 6 is a front view of a beauty apparatus provided with an ultrasonic generator according to Embodiment 3 of the present invention, FIG. 7 is an exploded perspective view, and the beauty apparatus of Embodiment 3 shown in both figures is the previous embodiment. 1 or the ultrasonic generator of Example 2 is provided.

  6 and 7, this beauty device includes a main body 61 that is a part that is gripped by a user, a head base 62 that is located at the front end (upper end in FIG. 6) of the main body 61, and a head base. A first head block 64 (corresponding to the first head block 2a in FIG. 1 or FIG. 5) and a second head block 66 (second head block in FIG. 1 or FIG. 5) projecting so as to branch from the base 62 to the left and right. 2b). Each of the first and second head blocks 64 and 66 constitutes a plurality of head blocks, and is directed slightly obliquely upward from the head base portion 62 at the upper end of the main body portion 61, whereby the beauty apparatus Is formed in a Y-shape as a whole.

  The main body 61 is provided with a switch 67 that selectively switches the first and second head blocks 64 and 66 to operate. In the housing of the main body 61, the switch of the first embodiment or the second embodiment is provided. The ultrasonic control block 1 of the sound wave generator is accommodated.

  As will be described later, the first head block 64 is directly brought into contact with the human nose by a first probe head provided at the tip thereof and an attachment provided so as to cover the periphery of the first head block 64 and applies ultrasonic vibration. Get a skin-beautifying effect. On the other hand, the second head block 66 is brought into contact with a main part such as a cheek or a forehead in a human face by a second probe head provided at the tip thereof, thereby applying ultrasonic vibrations to obtain a skin beautifying effect.

  The head base unit 62 includes a trident-shaped and hollow head base 71. The head base 71 is connected to the first head block 64 via the head ring 63, is connected to the second head block 66 via the head ring 65, and is connected to the second head block 66 via the accent ring 74. 61 is connected to the housing. The head base 71 is mounted so that a pair of head cases 72a and 72b are sandwiched between both sides thereof. The first head block 64 and the second head block 66 are provided with caps 73 that are attached when not in use.

  FIG. 8 is an exploded perspective view of the first head block 64.

  In FIG. 8, the first head block 64 includes the first probe head 806 as described above, and the surface of the first probe head 806 is a contact surface that comes into contact with the skin of the living body, and is opposite to the contact surface. A first ultrasonic transducer 807 is attached to the back surface. The first ultrasonic transducer 807 is ultrasonically vibrated when a drive voltage is applied from the ultrasonic control block 1, and the first probe head 806 is also ultrasonically vibrated accordingly.

  The first probe head 806 includes a cylindrical portion that protrudes on the outer peripheral edge on the side on which the first ultrasonic transducer 807 is attached, on the side opposite to the contact surface, and a substantially cylindrical probe cover so as to cover the cylindrical portion. 804 is provided. The probe cover 804 has a bent portion protruding inward at the tip thereof in contact with the outer peripheral surface of the first probe head 806, and an O-ring 805 as a seal member is provided in a gap between the bent portion and the first probe head 806. It is intervening.

  A probe spring cover 801, which is also substantially cylindrical, is provided on the outer side of the probe cover 804 so as to be movable with respect to the probe cover 804. The probe spring cover 801 includes a sliding portion that is in sliding contact with the outer peripheral surface of the probe cover 804 on the distal end side, and has a cover portion having a diameter larger than that of the sliding portion at the lower end thereof. A probe head spring 802 is accommodated via a ring 803.

  Such a probe head spring 802 presses the probe spring cover 801 upward in FIG. At this time, the lower end of the cover portion of the probe spring cover 801 is inserted into the head ring 63, and an engaging portion protruding outward is engaged in the head ring 63 to prevent upward slipping.

  An attachment 800 is attached to the distal end side (first probe head 806 side) on the outer side of the probe spring cover 801. In the attachment 800, the opening on the front end side is smaller than the opening on the rear end side, and a notch is formed in a part of the outer peripheral edge on the front end side.

  A probe base 810 is disposed below the first ultrasonic transducer 807. The probe base 810 has a cup shape with an open lower part, and the lower end of the first ultrasonic transducer 807 is placed on the stepped portion of the upper outer periphery, and the first ultrasonic transducer 807 is sandwiched between the probe cover 804 and the probe base 810. I support it. The lower end portion of the probe base 810 has a flange projecting outward, and a screw 811 is inserted from below the flange to fasten and fix the probe cover 804 and the probe base 810.

  The probe base 810 is provided with a connection fitting 808 serving as an anode that contacts the back surface of the first ultrasonic transducer 807 and a connection fitting 809 serving as a cathode that contacts the back surface of the flange of the first probe head 806. Yes. Further, each connection fitting 808, 809 is connected to the ultrasonic control block 1 through a lead wire.

  Next, an operation for performing care of the nose using the first head block 64 will be described.

  By holding the main body 61 and operating the switch 67, the first ultrasonic transducer 807 is driven by applying a driving voltage, and the first probe head 806 is ultrasonically vibrated. In this state, the first head block 64 is brought close to the upper part of the nose (just below the eyebrows) and pressed. At this time, the notch of the attachment 800 is a lower portion, and when a pressing load of a certain level or more is applied through the attachment 800 in this state, the attachment 800 moves backward while resisting the elastic force of the probe head spring 802. In the initial pressing, the edge mainly contacts the skin (nose) on the side opposite to the notch of the attachment 800. As the attachment 800 moves backward, the contact surface of the first probe head 806 contacts the skin (nose) in addition to the attachment 800.

  When the attachment 800 and the first probe head 806 to which the ultrasonic vibration is applied are in contact with the skin as described above, the dirt components of the skin plugs and pores are caused by the ultrasonic vibration of the first probe head 806. Softens and can push them to the skin surface.

  In this state, the device is gradually slid toward the tip of the nose to remove the smudged components of the pushed out and softened plugs and pores while being attached to the inner periphery of the attachment 800. At this time, the attachment 800 has a notch on the front side in the advancing direction, and the inner peripheral edge that contacts the nose on the opposite side has an R shape. Therefore, care for the nose should be performed with reduced damage to the skin. At the same time, the effect of tightening the pores after removal can also be obtained by ultrasonic vibration.

  FIG. 9 is an exploded perspective view of the second head block 66.

  In FIG. 9, the second head block 66 includes the second probe head 902 as described above, and the surface of the second probe head 902 becomes a contact surface that comes into contact with human skin, and is opposite to the contact surface. A second ultrasonic transducer 903 is attached to the back surface. The second ultrasonic transducer 903 ultrasonically vibrates when a driving voltage is applied from the ultrasonic control block 1, and accordingly, the second probe head 902 also vibrates ultrasonically.

  The second probe head 902 has a flange that protrudes outward on the outer peripheral edge on the side where the second ultrasonic transducer 903 is attached, and a substantially cylindrical head cover 900 is provided so as to cover the flange. Yes. The head cover 900 has a bent portion protruding inward at the tip thereof in contact with the outer peripheral surface of the second probe head 902, and an O-ring 901 as a seal member is interposed in a gap between the bent portion and the flange.

  The head cover 900 is locked and fixed in a state where the upper end of the head base 906 having an open upper portion is inserted, and an O-ring 905 serving as a sealing material is interposed therebetween. A metal fitting mounting rib is formed inside the head base 906, and an anode connection metal fitting 904 a is attached to the metal fitting attachment rib, and a cathode connection metal fitting 904 b is attached to the outer peripheral end of the head base 906. The connection fitting 904a is elastically pressed into contact with the back surface of the second ultrasonic transducer 903, and the connection fitting 904b is elastically attached to the back surface of the second probe head 902 located outside the second ultrasonic transducer 903. In pressure contact. Further, each connection fitting 904a, 904b is connected to the ultrasonic control block 1 through a lead wire.

  The head base 906 is movably inserted into a through hole provided in the center of the spring base 909, and a rubber cover 910 as an elastic body is fixed by screws 914 via a pressing plate 913. Note that an O-ring 912 as a seal material is provided on the outer peripheral surface of the spring base 909 so as to seal between the head connecting portion of the head base 71.

  A bent annular elastic deformation portion is provided on the outer peripheral side of the rubber cover 910, and the outer side of the elastic deformation portion is sandwiched between the annular rubber cover fixing plate 911 and the spring base 909. In this state, the screw 914 is used. Fix it. A cylindrical spring cover 908 into which the boss portion of the head base 906 is inserted is provided at the upper part on the inner peripheral side of the spring base 909, and a head spring 907 as an elastic means is interposed between the spring cover 908 and the boss portion. Disguise. The head spring 907 presses the head base 906 upward against the spring base 909 in FIG.

  From the above configuration, the second head block 66 is movable in the direction perpendicular to the contact surface of the second probe head 902 by the head spring 907, and with respect to the central axis at the center of the contact surface in the perpendicular direction. The rubber cover 910 can swing.

  Next, the operation of performing facial care using the second head block 66 will be described.

  As described above, when the switch 67 is further operated while the first head block 64 side is operating, the second probe head 902 is ultrasonically vibrated. In this state, the second probe head 902 is pushed close to the face, for example, the cheek. As a result, tension is applied to the pores, blood circulation is promoted by vibration, collagen production is promoted, and the skin is stretched to make the pores inconspicuous, resulting in a cosmetic effect.

  In addition, since each of the plurality of head blocks, that is, the first head block 64 and the second head block 66 has a function of detecting the load, each probe head is in close contact with the load skin. It is possible to detect whether it is in contact (load state) or not in close contact with the skin (no load state). Thus, by notifying the user of the detection result, it is possible to use the beauty device in an appropriate use state determined by the specification, and a beauty effect can be reliably produced.

It is a figure which shows the structure of the ultrasonic generator which concerns on Example 1 of this invention. It is a figure which shows the basic impedance frequency characteristic at the time of the load of an ultrasonic transducer | vibrator, and no load. It is a figure which shows the impedance frequency characteristic at the time of the time of the load of a some ultrasonic transducer | vibrator, and no load. It is a figure which shows the drive current frequency characteristic at the time of the load of a some ultrasonic transducer | vibrator, and no load. It is a figure which shows the structure of the ultrasonic generator which concerns on Example 2 of this invention. It is a front view which shows the structure of the beauty apparatus provided with the ultrasonic generator of this invention. It is a disassembled perspective view which shows the structure of the beauty apparatus provided with the ultrasonic generator of this invention. It is a disassembled perspective view which shows the structure of a 1st head block. It is a disassembled perspective view which shows the structure of a 2nd head block.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,5 ... Ultrasonic control block 2a, 64 ... 1st head block 2b, 66 ... 2nd head block 11a ... 1st drive circuit 11b ... 2nd drive circuit 12 ... Oscillation circuit 13 ... Output adjustment circuit 14a ... 1st detection Circuit 14b ... Second detection circuit 15 ... CPU
51 ... Detection circuit 52 ... CPU
DESCRIPTION OF SYMBOLS 61 ... Main part 62 ... Head base part 63 ... Head ring 65 ... Head ring 67 ... Switch 71 ... Head base 72a, 72b ... Head case 73 ... Cap 74 ... Accent ring 800 ... Attachment 801 ... Probe spring cover 802 ... Probe Head spring 804... Probe cover 805, 803, 901, 905, 912... O-ring 806... First probe head 807. ... Screw 900 ... Head cover 902 ... Second probe head 903 ... Second ultrasonic transducer 905 ... O-ring 906 ... Head base 907 ... Head spring 908 ... Spring cover 909 ... Spring base 910 ... Rubber cover 9 11 ... Rubber cover fixing plate 913 ... Presser plate

Claims (2)

In an ultrasonic generator including first and second head blocks that transmit ultrasonic vibration generated by an ultrasonic vibrator to a load via a probe head and includes a pair of the ultrasonic vibrator and the probe head,
Driving the first and second head blocks by an ultrasonic control block comprising a first drive means, a second drive means, an oscillation means, an output adjustment means, a detection means and a control means;
One detection means is provided for the first and second head blocks,
The control means is different from the first threshold corresponding to the ultrasonic transducer of the first head block and the first threshold corresponding to the ultrasonic transducer of the second head block. A second threshold value as threshold information, and the detection means is configured to detect the first and second head blocks based on the first and second threshold values provided from the control means . ultrasonic generator and detecting whether the probe head is in the load state, or a no-load state. The ultrasonic generator according to claim 1 is provided.
A cosmetic device comprising an ultrasonic generator, wherein the ultrasonic vibration generated by the ultrasonic transducer is applied to the skin through the probe head to have a cosmetic effect.

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