Beauty device

Abstract

To provide a beauty device in which a configuration of a conductive part arranged from a grip part to a head part can be simple and contact failure does not occur.SOLUTION: A tooth brush 1 as an example of a beauty device includes: a grip part 2 having a distal end from which a conductive part 4 projects; a head part 3 detachably attached to the grip part 2 in a state of storing the conductive part 4; electrodes 10, 11 attached to the head part 3 and electrically connected to contact parts 4a, 4b provided in the conductive part 4; and a brush part 12 detachably attached to the head part 3.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to beauty equipment.

Background Art

[0002] Conventionally, a toothbrush having a brush part for cleaning teeth and an electrode for energizing in the oral cavity has been proposed (see Patent Document 1).

[0003] The toothbrush of Patent Document 1 is provided with a grip part that a user grips by hand and a head part having a brush part and an electrode in a detachable manner. In this toothbrush, a conductive part for supplying power to the electrode of the head part is arranged by operating a switch of the grip part, and for example, the power supply can be turned on and off by the switch operation. According to this toothbrush, there is an advantage that an old brush part can be replaced with a new brush part by replacing the head part.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, since the conductive part on the grip part side and the conductive part on the head part side need to be in contact with each other when the head part is attached to the grip part and in a separated state (non-contact state) when the head part is removed from the grip part, contact parts are provided on both conductive parts. Therefore, the configuration of the conductive part is complicated, and there is a risk of malfunction due to poor contact of the contact part.

[0006] Therefore, an object of the present disclosure is to provide a beauty device in which the configuration of the conductive part arranged from the grip part to the head part is simple and good, and moreover, no contact failure occurs.

Means for Solving the Problems

[0007] On one side, the following solutions are provided.

[0008] (1) A gripping part with a conductive part protruding from the tip, A head part that is detachably attached to the gripping part with the conductive part accommodated therein, An electrode attached to the head part and electrically connected to a contact part provided on the conductive part, Characterized by including an implementation part that is detachably attached to the head part and can be inserted into the oral cavity.

[0009] (2) In the configuration of (1) above, the implementation part is detachable by press-fitting and pulling out into the press-fitting part of the head part.

[0010] (3) In the configuration of (1) above, the electrode is press-fitted into the contact part of the conductive part.

[0011] (4) In the configuration of (1) above, the electrode is arranged on the side of the head part opposite to the implementation part.

[0012] (5) In the configuration of (1) above, the electrodes are of two types: a positive electrode and a negative electrode.

[0013] (6) In the configuration of (1) above, the implementation part is characterized by outputting an electrical stimulation that can act on at least one of the orbicularis oris muscle, zygomaticus major muscle, zygomaticus minor muscle, risorius muscle, and buccinator muscle from inside the oral cavity.

Advantages of the Invention

[0014] According to the present disclosure, it is possible to provide a beauty device in which the configuration of the conductive part arranged from the gripping part to the head part is simple and good, and moreover, no contact failure occurs.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6A

Figure 6B

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12A

Figure 12B

Figure 12C

Figure 13

Best Mode for Carrying Out the Invention

[0016] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings.

[0017] As shown in FIGS. 1 to 5, the toothbrush 1 includes a gripping portion 2 that a user grips by hand, and a head portion 3 provided with electrodes 10 and 11 and a brush portion 12. The whole or most of the gripping portion 2 is formed as a counter electrode with respect to the electrodes 10 and 11 of the head portion 3. The gripping portion 2 is provided with a power switch (not shown) for turning the power on and off and the like. The gripping portion 2 houses a battery (not shown), an AC generator (not shown), and the like. The battery can be charged regardless of contact or non-contact. The generation frequency of the AC generator can be arbitrary as long as it is between 1 Hz and 3000 Hz, but preferably it is set between 1 Hz and 300 Hz or between 1000 Hz and 3000 Hz as a suitable range for stimulating muscles. The output current value of the AC generator is set within a range where safety due to galvanic current in the oral cavity and safety due to glossopharyngeal electrical stimulation (GST) can be ensured.

[0018] A conductive portion 4 that extends straight from the tip of the gripping portion 2 protrudes from the gripping portion 2. Two contact portions 4a and 4b are provided at two shift positions in the longitudinal direction of the conductive portion 4 on the tip side of the conductive portion 4. The two contact portions 4a and 4b and the base side (ground) of the conductive portion 4 are insulated from each other by two insulating portions 4c. Each contact portion 4a and 4b protrudes in both orthogonal directions of the straight shape of the conductive portion, and each protruding shape is a press-fitting blade shape with a pointed tip. Each contact portion is arranged in each of the following electrode mounting grooves 33 (shown in FIG. 4(a)).

[0019] On the tip surface of the gripping portion 2, a press-fitting protrusion 2a (shown in FIG. 2) is provided around the conductive portion 4.

[0020] The head portion 3 is detachably provided on the gripping portion 2 as described below. The head portion 3 has a conductive portion accommodating hole 31 (shown in FIG. 3) extending along the longitudinal direction inside. The conductive portion accommodating hole 31 opens on the mounting side of the gripping portion 2. The head portion 3 is mounted on the gripping portion 2 by press-fitting the press-fitting projection 2a of the gripping portion 2 into the conductive portion accommodating hole 31, and is detachably provided by a configuration in which the press-fitting projection 2a can be pulled out from the conductive portion accommodating hole 31.

[0021] The conductive portion accommodating hole 31 communicates with the following respective electrode mounting grooves 33 on the tip side of the head portion 3. On the tip side of the head portion 3, electrode mounting grooves 33 (shown in FIG. 4(a)) are provided at two locations on one side thereof with a partition plate portion 32 (shown in FIG. 5) located at the center in the width direction interposed therebetween, and brush press-fitting grooves 34 (shown in FIG. 5), which are brush press-fitting portions, are provided on the other side.

[0022] The two electrodes 10, 11 are respectively mounted in the respective electrode mounting grooves 33 of the head portion 3 by insertion. In this insertion process, the two electrodes 10, 11 are press-fitted into the respective contact portions 4a, 4b of the conductive portion 4. Thereby, each of the electrodes 10, 11 is electrically connected to the respective contact portions 4a, 4b of the conductive portion 4. One of the two electrodes 10, 11 is a positive electrode 10 and the other is a negative electrode 11. Each of the electrodes 10, 11 is preferably formed of a titanium material, a stainless steel material, or a conductive silicon.

[0023] The surface sides of the respective electrodes 10, 11 are exposed in a protruding state from the electrode mounting grooves 33 (shown in FIG. 4). The surface sides of the respective electrodes 10, 11 are most protruding at the center in the width direction of the head portion 3 and are formed into an arcuate curved surface with respect to the width direction of the head portion 3 (see FIG. 4(a)).

[0024] As an example of the implementation part of the present invention, the brush part 12 has a base 12a (shown in FIG. 2) and a group of bristles 12b erected from the base 12a. The brush part 12 is detachably attached to the brush press-fitting groove 34 of the head part 3. The base 12a of the brush part 12 is press-fitted into the brush press-fitting groove 34, and can be pulled out by applying an external force in the reverse press-fitting direction to the brush part 12 press-fitted into the brush press-fitting groove 34.

[0025] In this way, the brush part 12 and the two electrodes 10 and 11 attached to the head part 3 are arranged on opposite sides of the head part 3. Also, when the brush part 12 and the two electrodes 10 and 11 are attached to the head part 3, waterproofness is ensured so that water or the like does not penetrate from the outside to the inside of the head part 3.

[0026] Next, the usage method of the toothbrush 1 will be described. The user holds the gripping part 2 of the toothbrush 1 by hand and turns on the power switch (not shown).

[0027] Insert the tip side of the head part 3 into the oral cavity and brush the teeth. Then, the dirt on the teeth can be scraped off by the friction between the brush part 12 and the teeth or the interference between the brush part 12 and foreign objects. On the other hand, the two electrodes 10 and 11 mainly touch the tongue or the like when the back side (inner side) of the teeth is brushed with the brush part 12, and mainly press the skin in the oral cavity when the front side (outer side) of the teeth is brushed with the brush part 12.

[0028] Here, when brushing teeth, since the areas around the respective electrodes 10 and 11 are almost filled with liquids such as saliva and tissue fluid in the oral cavity, an electric current is passed between the positive electrode 10 and the negative electrode 11 and the gripping portion 2 through the human body. Thereby, the cheek muscles can be stimulated by ultrasonic waves from inside the oral cavity, or the muscle strength can be contracted by EMS (Electrical Muscle Stimulation) from inside the oral cavity. In this way, while brushing teeth, the facial muscles can be cared for, and a lift-up effect and the removal of nasolabial folds can be expected. Since the inside of the oral cavity is closer to the cheek muscles than the EMS effect of applying an alternating current stimulation from the front side of the face, a strong muscle stimulation and a high EMS effect can be expected. In particular, an effective stimulation effect can be expected for the orbicularis oris muscle, the zygomatic major muscle, the zygomatic minor muscle, the risorius muscle, and the buccinator muscle. Also, a cleaning effect induced by electrophoresis is exhibited, and the oral cavity can be cleaned.

[0029] (EMS effect by toothbrush 1) The EMS effect of the toothbrush 1 was confirmed based on the experimental results of having 9 subjects use the toothbrush 1 for a certain period. In the experiment, the subjects were divided into 3 groups, and the effects were verified by applying stimulations with alternating current of different frequencies (1 kHz, 10 Hz, 100 Hz). The subjects in each group performed brushing according to the above usage method while receiving a current stimulation of the designated frequency by the toothbrush 1.

[0030] Figures 6A to 12D show some of the test results demonstrating the superiority of the EMS effect by the toothbrush 1. Figure 6A shows the improvement effect on the marionette line by applying an AC stimulus of 1 kHz. Figure 6B shows the volume change of the cheek and the volume change of the face line by applying an AC stimulus of 1 kHz. Figure 7 shows the beauty improvement effect by applying an AC stimulus of 10 Hz. Figure 8 shows the skin elasticity improvement effect by applying AC stimuli of 1 kHz, 10 Hz, and 100 Hz. Figure 9 shows the blood flow improvement effect by applying AC stimuli of 1 kHz, 10 Hz, and 100 Hz. Figure 10 shows the change in the thickness of the cheek muscle by applying AC stimuli of 1 kHz, 10 Hz, and 100 Hz. Figure 11 shows the change in the thickness of the zygomaticus minor muscle by applying AC stimuli of 1 kHz, 10 Hz, and 100 Hz. Figure 12A shows the influence of AC stimuli of 1 kHz, 10 Hz, and 100 Hz on the hardness of the masseter major muscle. Figure 12B shows the influence of AC stimuli of 1 kHz, 10 Hz, and 100 Hz on the hardness of the cheek muscle. Figure 12C shows the influence of AC stimuli of 1 kHz, 10 Hz, and 100 Hz on the hardness of the zygomaticus minor muscle.

[0031] It was confirmed that by applying an AC stimulus of 1 kHz with the toothbrush 1, the volumes of the cheek and the face line changed, and the marionette line was improved.

[0032] As shown in Figure 6A, the length, area, and volume of the marionette line of the subject changed before using the toothbrush 1, immediately after use, and 4 weeks later. The vertical axis of Figure 6A represents the relative value, and the change rate when the state before use is set to 100% is shown. It can be confirmed that the area of the marionette line decreased significantly after using the toothbrush 1, and the improvement was maintained up to around 91% after 4 weeks. Also, a decrease was seen in the length and volume of the marionette line immediately after using the toothbrush 1, and particularly in the volume of the marionette line, a significant improvement was seen up to about 80% after 4 weeks. From this, it is shown that the low-frequency stimulus of 1 kHz is effective in improving the length and volume of the marionette line.

[0033] The vertical axis in Figure 6B represents the remaining volume (cc), and the volume changes immediately after use and 4 weeks after use are recorded based on before using the toothbrush 1. In Figure 6B, two parameters, "buccal volume" and "face line volume", are shown. It can be confirmed that immediately after using the toothbrush 1, the volume of the face line slightly increases and the buccal volume decreases. In particular, the buccal volume significantly decreases immediately after using the toothbrush 1, and although it recovers in 4 weeks, it remains decreased compared to before using the toothbrush 1. On the other hand, the volume of the face line increases immediately after using the toothbrush 1, but decreases 4 weeks later, and finally a smaller volume than before use is confirmed. From Figure 6B, it is suggested that by applying a low-frequency stimulus of 1 kHz, the volumes of the cheek and face line temporarily change and then improvement is seen.

[0034] Also, it was confirmed that by applying an alternating current stimulus of 10 Hz with the toothbrush 1, the area and volume of the nasolabial fold were improved. As shown in Figure 7, as a result of using the toothbrush 1 that applies an alternating current stimulus at a frequency of 10 Hz, it was confirmed that the area and volume of the nasolabial fold changed as compared with before and immediately after using the toothbrush 1. The vertical axis in Figure 7 is a relative value with the state before use being 100%, and indicates the degree such as the area of the nasolabial fold.

[0035] As shown in Figure 7, it was confirmed that the area of the nasolabial fold decreased to about 96% and the volume of the nasolabial fold decreased to about 87%. The improvement effect on the facial muscles and nasolabial fold appears in a short period by the low-frequency stimulus of 10 Hz. In particular, the decrease in the area and volume of the nasolabial fold is remarkable, and these are considered to be directly related to the tightening of the face and the reduction of wrinkles.

[0036] In addition, it was confirmed that the skin elasticity was improved by applying AC stimulation of 1 kHz, 10 Hz, and 100 Hz with the toothbrush 1. Fig. 8 shows the change in skin elasticity (R2 value) as a result of using the toothbrush 1 that applies AC stimulation at frequencies of 1 kHz, 10 Hz, and 100 Hz. The vertical axis in Fig. 8 represents the relative value of skin elasticity, with the skin elasticity before using the toothbrush 1 set as 100%, and the changes in skin elasticity immediately after use and 4 weeks later are visualized.

[0037] As shown in Fig. 8, when using the toothbrush 1 that applies AC stimulation at a frequency of 1 kHz, the skin elasticity decreases to about 97% immediately after use, but recovers again after 4 weeks and finally returns to around 98%. Although an immediate effect cannot be confirmed at 1 kHz, it is suggested that it is possible to maintain a stable state.

[0038] As shown in Fig. 8, when using the toothbrush 1 that applies AC stimulation at a frequency of 10 Hz, the skin elasticity increases rapidly immediately after use, reaching about 106%, and a high elasticity exceeding 104% is maintained even after 4 weeks. This suggests that the 10 Hz stimulation has a great effect on lifting and tightening the skin.

[0039] As shown in Fig. 8, when using the toothbrush 1 that applies AC stimulation at a frequency of 100 Hz, the skin elasticity increases to about 104% immediately after use, and although there is a slight decrease after 4 weeks, the elasticity still exceeds 101%. It is suggested that the 100 Hz stimulation has a certain effect on lifting and tightening the skin. From the experimental results in Fig. 8, it was confirmed that low-frequency stimulation with different frequencies has different effects on skin elasticity, and in particular, it was confirmed that the frequencies of 10 Hz or 100 Hz are effective for lifting the skin and restoring elasticity.

[0040] In addition, it was confirmed that blood flow was improved by applying AC stimulation of 1 kHz, 10 Hz, and 100 Hz with the toothbrush 1. Figure 9 shows how the blood flow in the facial skin changed as a result of using the toothbrush 1 that applies AC stimulation at frequencies of 1 kHz, 10 Hz, and 100 Hz. The improvement in blood flow also leads to cosmetic effects on the face and maintenance of skin health. The vertical axis in Figure 9 represents the relative value of blood flow, and the blood flow immediately after use, 1 week after use, and 4 weeks after use is compared with the blood flow before using the toothbrush 1 being set as 100%.

[0041] As shown in Figure 9, when using the toothbrush 1 that applies AC stimulation at a frequency of 1 kHz, the blood flow increased by approximately 104% immediately after use, and a stable blood flow promoting effect of approximately 105% was also observed 4 weeks later.

[0042] As shown in Figure 9, when using the toothbrush 1 that applies AC stimulation at a frequency of 10 Hz, there was no significant change in blood flow immediately after use, but it then increased rapidly, and a significant increase exceeding 114% was confirmed 4 weeks later. From this result, it can be seen that the 10 Hz stimulation has the effect of dilating blood vessels and significantly increasing blood flow.

[0043] As shown in Figure 9, when using the toothbrush 1 that applies AC stimulation at a frequency of 100 Hz, there was almost no change in blood flow immediately after use, but it then gradually increased and increased to approximately 106% 4 weeks later. From the experimental results in Figure 9, it was confirmed that low-frequency stimulation at different frequencies has different effects on blood flow, and in particular, frequencies of 10 Hz or 100 Hz have been shown to be effective in promoting blood flow in the long term.

[0044] Figure 10 shows the cosmetic improvement effect on the thickness of the buccal muscles as a result of using the toothbrush 1 that applies AC stimulation at frequencies of 1 kHz, 10 Hz, and 100 Hz. The vertical axis in Figure 10 represents the relative value, with the state before using the toothbrush 1 being set as 100%, and how the thickness of the buccal muscles at each frequency changed before use and 4 weeks later is compared.

[0045] As shown in Fig. 10, when the toothbrush 1 that applies AC stimulation at a frequency of 1 kHz is used, even after 4 weeks, there is almost no change in the thickness of the buccal muscle, and it remains at about 100%. It can be seen that at this frequency, the long-term effect is not very promising.

[0046] As shown in Fig. 10, when the toothbrush 1 that applies AC stimulation at a frequency of 10 Hz is used, after 4 weeks, the thickness of the buccal muscle has increased to about 118%, and a very significant improvement effect is confirmed. From this result, it is suggested that the 10 Hz stimulation is particularly effective in increasing and tightening the buccal muscle.

[0047] As shown in Fig. 10, when the toothbrush 1 that applies AC stimulation at a frequency of 100 Hz is used, the thickness of the buccal muscle has increased to about 110%, and a relatively high improvement effect is confirmed. Although not as much as 10 Hz, it can be seen that 100 Hz also contributes to the tightening and increase in the thickness of the muscle.

[0048] Fig. 11 shows how the thickness of the risorius muscle has changed as a result of using the toothbrush 1 that applies AC stimulation at frequencies of 1 kHz, 10 Hz, and 100 Hz. The vertical axis in Fig. 11 is the relative value, with the state before use set as 100%, showing the change in the thickness of the risorius muscle before and 4 weeks after use at each frequency.

[0049] As shown in Fig. 11, when the toothbrush 1 that applies AC stimulation at a frequency of 1 kHz is used, after 4 weeks, the thickness of the risorius muscle has increased to about 110%, showing a somewhat improvement effect.

[0050] As shown in Fig. 11, when the toothbrush 1 that applies AC stimulation at a frequency of 10 Hz is used, the thickness of the risorius muscle has increased to about 118%, and a fairly large effect can be confirmed. It can be seen that the 10 Hz stimulation is particularly effective in tightening the risorius muscle.

[0051] As shown in Fig. 11, when the toothbrush 1 that applies AC stimulation at a frequency of 100 Hz is used, the thickness of the zygomaticus major muscle increases to about 122%, showing the greatest effect. It can be seen that the 100 Hz stimulation is the most effective for the zygomaticus major muscle.

[0052] From Fig. 11, it can be seen that the thickness of the zygomaticus major muscle shows different effects depending on the frequency. In particular, 100 Hz shows the greatest effect, followed by 1 kHz having a high effect. 10 Hz does not show as much effect as the other two frequencies, but a certain effect was confirmed.

[0053] Appropriately adjusting the firmness of the facial muscles and balancing contraction and relaxation is one of the important elements in beauty. Figs. 12A - 12C show the changes in the firmness of the masseter muscle, buccinator muscle, and zygomaticus major muscle as the results of using the toothbrush 1 at frequencies of 1 kHz, 10 Hz, and 100 Hz. In the masseter muscle, 1 kHz increased the firmness to about 104%, showing a muscle contraction effect, while at 10 Hz and 100 Hz, the firmness decreased to about 97% and about 95%, respectively, showing a significant relaxation effect. In the buccinator muscle, 1 kHz and 100 Hz showed a certain contraction effect, especially 1 kHz showing an increase of about 105%, while at 10 Hz, it decreased to about 98%, confirming a relaxation effect. Regarding the zygomaticus major muscle, 1 kHz significantly reduced the firmness to about 85%, showing a strong relaxation effect. At 10 Hz and 100 Hz, no significant change in the firmness of the zygomaticus major muscle was confirmed. From these results, it was found that 1 kHz is mainly characterized by a significant muscle contraction effect, especially effective for the masseter muscle and the buccinator muscle, and brings a relaxation effect to the zygomaticus major muscle. 10 Hz mainly contributes to muscle relaxation, and 100 Hz was confirmed to have a strong relaxation effect on the masseter muscle while having a slight contraction effect on other muscles.

[0054] From the above experimental results, it was confirmed that low-frequency stimuli of 1 kHz, 10 Hz, and 100 Hz bring different beauty effects. In particular, 10 Hz was found to be effective in improving skin elasticity and blood flow promotion, and 100 Hz showed excellent effects in increasing muscle thickness. Although 1 kHz also shows certain effects, it is difficult to expect a large effect in a short period, but there is a possibility of obtaining a stable effect in the long term. By properly using these frequencies, comprehensive beauty improvement is possible.

[0055] Even when not brushing teeth, by inserting the toothbrush 1 into the oral cavity and massaging the skin in the oral cavity, etc., it is also possible to care for the facial muscles by the same action as above.

[0056] By the way, when the muscles around the mouth atrophy, it causes sagging of the mouth corners, downturn of the mouth corners, nasolabial folds, and marionette lines. Since the muscles around the mouth are connected to various facial muscles such as the buccinator muscle, zygomaticus minor muscle, etc., strengthening them can affect not only the mouth but also the cheeks and lifting up.

[0057] In this regard, according to this embodiment, by having the above-described action, it is possible to promote effects such as sagging of the cheeks, lifting up of the mouth corners, lifting of the mouth corners (the effect that the mouth corners are sharply lifted when the mouth is tightened), increased blood flow (promoting blood circulation, discharging waste products that loosen stiff muscles, and improving swelling), and a richer expression (since it is connected to many facial muscles, the expression becomes richer).

[0058] Also, in the senior layer, when the muscles around the mouth atrophy or become stiff, the range of motion of the temporomandibular joint and the tongue becomes narrow, and as a result, saliva secretion decreases and the chewing force and swallowing function decline.

[0059] In this regard, according to this embodiment, by having the above-described actions, it is possible to promote effects such as articulation improvement (clear pronunciation), approach to the gums (effect of applying microcurrent to the gums), blood flow increase (promoting blood circulation and relaxing stiff muscles), oral environment improvement (increase in saliva volume), etc. Further, along with the improvement of the oral environment, prevention of tooth decay, periodontal disease, prevention of bad breath, and improvement of swallowing function can also be promoted.

[0060] As described above, the toothbrush 1 includes a gripping portion 2 with a conductive portion 4 protruding from the tip, a head portion 3 detachably attached to the gripping portion 2 while being housed in the conductive portion 4, electrodes 10, 11 attached to the head portion 3 and electrically connected to contact portions 4a, 4b provided on the conductive portion 4, and a brush portion 12 detachably attached to the head portion 3. Therefore, since there is no need to provide a contact structure on the conductive portion 4 arranged from the gripping portion 2 to the head portion 3, the configuration of the conductive portion 4 can be simple, and moreover, since there is no need to provide a contact structure, contact failure does not occur. Also, as a method of using the toothbrush 1, a method of replacing only the brush portion 12 and a method of replacing the head portion 3 with respect to the gripping portion 2 and replacing the brush portion 12 and the electrodes 10, 11 for each user can be selected.

[0061] FIG. 4(b) shows the electrodes 10, 11 according to the modified example. On the surfaces of the electrodes 10, 11 of the modified example, a large number of protrusions 10a, 11a are arranged evenly without gaps. When brushing teeth, since the large number of protrusions 10a, 11a move while contacting the surface of the tongue, the skin in the oral cavity, etc., the removal of bacteria can be effectively achieved. Also, since the stimulation of the cheek muscles is improved, it is also effective for lifting and removing nasolabial folds.

[0062] FIG. 13 is a diagram comparing the characteristics of various electrodes 10, 11. As shown in FIG. 13, when the electrodes 10, 11 are made of titanium, the best determination result (◎) was obtained. Titanium has high strength and durability also adopted for the housing of the new iPhone and excellent biocompatibility used in medical applications. Also, titanium has high corrosion resistance, a luxurious feeling, and lasts long. In this case, the consumable of the toothbrush 1 is only the replacement of the brush.

[0063] As shown in Fig. 13, when the electrodes 10 and 11 are made of SUS316L (stainless steel), an excellent determination result (〇) was obtained. SUS316L (stainless steel) has excellent biocompatibility and is used in medical applications. It also has high corrosion resistance and is used as tableware. Its price is lower than that of titanium, and its workability is also better than that of titanium. In this case, the consumable of the toothbrush 1 is only the brush replacement.

[0064] As shown in Fig. 13, when the electrodes 10 and 11 are made of carbon nanotube silicon or resin, a somewhat suitable determination result (△) was obtained. Carbon nanotube silicon or resin has a good feel on the skin, a low price, and a production track record. In this case, as a consumable of the toothbrush 1, it is necessary to replace each electrode.

[0065] As shown in Fig. 13, when the electrodes 10 and 11 are made of silver printing, a somewhat suitable determination result (△) was obtained. Silver printing has excellent design and a fixed price. In this case, as a consumable of the toothbrush 1, it is necessary to replace each electrode.

[0066] As shown in Fig. 13, when the electrodes 10 and 11 are made of silver filler + platinum silicon or silver filler + fluororubber, an unsuitable determination result (×) was obtained. Silver filler + platinum silicon or silver filler + fluororubber has a good texture, a low resistance value, and is a unique material. However, silver filler + platinum silicon or silver filler + fluororubber has disadvantages such as a high price, easy discoloration, and the need for a complex manufacturing process. In the case of silver filler + platinum silicon or silver filler + fluororubber, as a consumable of the toothbrush 1, it is necessary to replace each electrode.

[0067] That is, as shown in FIG. 13, the electrodes 10 and 11 are preferably made of titanium material or stainless steel material. Although not described in FIG. 13, conductive silicone is also preferable as the electrode. Conductive silicone is obtained by mixing silver flakes, fluororubber, fluorosurfactant, and organic solvent, and silver nanoparticles are spontaneously generated by the mixing. Conductivity is obtained by the silver nanoparticles. Conductive silicone has no adverse effect on the human body even when placed in the oral cavity, and has shrinkability, so it feels good to the touch. Also, conductive silicone has high physical property stability and is less likely to cause deterioration over time.

[0068] In the above embodiment, the head portion 3 is configured to be detachable by a configuration that allows it to be press-fitted and pulled out from the gripping portion 2, but it may be configured to be detachable by a configuration other than press-fitting, and any detachable structure may be used.

[0069] In the above embodiment, the brush portion 12 is configured to be detachable by a configuration that allows it to be press-fitted and pulled out from the brush press-fitting groove 34 of the head portion 3, but it may be configured to be detachable by a configuration other than press-fitting, such as screwing or twisting and fixing, and any detachable structure may be used.

[0070] One plus electrode 10 and one minus electrode 11 are provided for the electrodes 10 and 11, respectively, but the number is not limited. Also, the arrangement positions of the electrodes 10 and 11 are not limited.

[0071] Although each of the above embodiments has been described in detail, it is not limited to a specific embodiment, and various modifications and changes are possible within the scope described in the claims. Also, it is possible to combine all or a plurality of the components of the above-described embodiments.

[0072] For example, in the above-described embodiment, an implementation portion having no brush function may be used instead of the brush portion 12.

[0073] In addition, the following supplementary notes are disclosed regarding the above embodiments.

[0074] (Supplementary Note 1)

[0075] (1) It is characterized by including a gripping part with a conductive part protruding from the tip, a head part detachably attached to the gripping part with the conductive part accommodated therein, an electrode attached to the head part and electrically connected to a contact part provided on the conductive part, and a brush part detachably attached to the head part.

[0076] (2) In the configuration of (1) above, the brush part is detachable by being press-fitted and pulled out into a brush press-fitting part of the head part.

[0077] (3) In the configuration of (1) above, the electrode is press-fitted into the contact part of the conductive part.

[0078] (4) In the configuration of (1) above, the electrode is arranged on the side opposite to the brush part of the head part.

[0079] (5) In the configuration of (1) above, there are two types of electrodes, a positive electrode and a negative electrode.

Explanation of Reference Numerals

[0080] 1 Toothbrush 2 Gripping part 3 Head part 4 Conductive part 4a, 4b Contact part 10 Electrode (positive electrode) 11 Electrode (negative electrode) 12 Brush part 34 Brush press-fitting groove (brush press-fitting part)

Claims

1. A gripping part with a conductive part protruding from the tip, A head part that is detachably attached to the gripping part while accommodating the conductive part, An electrode attached to the head part and electrically connected to a contact part provided on the conductive part, A beauty device including an implementation part that is detachably attached to the head part and can be inserted into the oral cavity.

2. The beauty device according to Claim 1, wherein the implementation part is detachable by press-fitting and pulling out into the press-fitting part of the head part.

3. The beauty device according to Claim 1, wherein the electrode is press-fitted into the contact part of the conductive part.

4. The beauty device according to Claim 1, wherein the electrode is disposed on the side of the head part opposite to the implementation part.

5. The beauty device according to Claim 1, wherein there are two types of electrodes, a positive electrode and a negative electrode.

6. The beauty device according to any one of Claims 1 to 4, wherein the implementation part outputs an electrical stimulation capable of acting on at least one of the orbicularis oris muscle, zygomatic major muscle, zygomatic minor muscle, risorius muscle, and buccinator muscle from inside the oral cavity.

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