Cosmetic instrument

Abstract

The invention provides a cosmetic instrument. The structure of a conductive part arranged from a holding part to a head part is simple, and poor contact does not occur. A toothbrush (1), which is an example of a cosmetic instrument, is provided with: a grip part (2) having a conductive part (4) protruding from the tip side thereof; a head part (3) detachably attached to the grip part (2) in a state in which the conductive part (4) is housed; electrodes (10, 11) which are mounted on the head part (3) and are electrically connected to the contact parts (4a, 4b) of the conductive part (4); and a brush head part (12) which is detachably mounted on the head part (3).

Description

Technical Field

[0001] The present disclosure relates to a beauty instrument. Background Art

[0002] Conventionally, a toothbrush has been proposed which includes a brush head portion for cleaning teeth and electrodes that are energized in the oral cavity (see Patent Document 1).

[0003] The toothbrush in Patent Document 1 is detachably provided with: a grip portion held by a user; and a head portion having a brush head and electrodes. The toothbrush is provided with a conductive portion for transmitting electric power to the electrodes of the head portion by operating a switch on the grip portion, and the electric power can be turned on and off, for example, by operating the switch. This toothbrush has the advantage that the old brush head can be replaced with a new one by replacing the head portion.

[0004] Prior Art Documents

[0005] Patent Documents

[0006] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2005-334517

[0007] However, since the conductive portion on the grip portion side and the conductive portion on the head portion side must be in contact when the head portion is assembled to the grip portion, and must be separated (non-contact state) when the head portion is detached from the grip portion, contact portions are provided on the conductive portions on both sides. As a result, the structure of the conductive portion becomes complicated, and there is a risk of malfunctions due to poor contact of the contact portions. Summary of the Invention

[0008] For this reason, an object of the present disclosure is to provide a beauty instrument in which the structure of the conductive portion extending from the grip portion to the head portion is simple and there are no problems with poor contact.

[0009] In one aspect, the following solution means is provided.

[0010] (1) There is provided a beauty instrument, characterized by including: a grip portion having a conductive portion protruding from the front end side; a head portion that can be detachably attached to the grip portion in a state of accommodating the conductive portion; electrodes that are attached to the head portion and are electrically connected to the contact portion of the conductive portion; and an implementation portion (for example, a brush head portion) that is detachably attached to the head portion and can be inserted into the oral cavity.

[0011] (2) In the configuration of (1) above, the implementation portion is detachably attached to the press-fitting portion of the head portion by a press-fitting and pulling-out method.

[0012] (3) In the configuration of (1) above, the electrodes are attached to the contact portion of the conductive portion by a press-fitting method.

[0013] (4) In the configuration of (1) above, the electrode is located on the side of the head opposite to the implementation part.

[0014] (5) In the configuration of (1) above, the electrodes are of two types: positive electrode and negative electrode.

[0015] (6) In the configuration of (1) above, the implementation part can output electrical stimulation 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.

[0016] The effects of the present invention are as follows.

[0017] According to the present invention, it is possible to provide a beauty instrument with a simple structure of the conductive part extending from the holding part to the head and without problems of poor contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A front view of a toothbrush showing an embodiment of the present invention is shown.

[0019] Figure 2 An exploded view of a toothbrush showing an embodiment of the present invention is shown.

[0020] Figure 3 A schematic structural view of the head etc. showing an embodiment of the present invention is shown.

[0021] Figure 4 (a) A perspective view of the head electrode side showing an embodiment of the present invention is shown, and (b) a perspective view of the head electrode side showing a modified example is shown.

[0022] Figure 5 A perspective view of the brush head component before being installed on the head showing an embodiment of the present invention is shown.

[0023] Figure 6A A diagram showing the effect of improving the marionette line by applying an AC stimulation of 1 kHz is shown.

[0024] Figure 6B A diagram showing the changes in cheek volume and facial line volume by applying an AC stimulation of 1 kHz is shown.

[0025] Figure 7 A diagram showing the beauty improvement effect brought by applying an AC stimulation of 10 Hz is shown.

[0026] Figure 8 A diagram showing the effect of improving skin elasticity by applying AC stimulations of 1 kHz, 10 Hz, and 100 Hz is shown.

[0027] Figure 9A diagram showing the improvement of blood flow effect by applying AC stimuli of 1 kHz, 10 Hz, and 100 Hz.

[0028] Figure 10 A diagram showing the change in the thickness of the buccal muscle caused by applying AC stimuli of 1 kHz, 10 Hz, and 100 Hz.

[0029] Figure 11 A diagram showing the change in the thickness of the laughing muscle caused by applying AC stimuli of 1 kHz, 10 Hz, and 100 Hz.

[0030] Figure 12A A diagram showing the effect of AC stimuli of 1 kHz, 10 Hz, and 100 Hz on the hardness of the major zygomatic muscle.

[0031] Figure 12B A diagram showing the effect of AC stimuli of 1 kHz, 10 Hz, and 100 Hz on the hardness of the buccal muscle.

[0032] Figure 12C A diagram showing the effect of AC stimuli of 1 kHz, 10 Hz, and 100 Hz on the hardness of the laughing muscle.

[0033] Figure 13 A diagram comparing various electrode characteristics, etc.

[0034] In the diagram: 1 - toothbrush, 2 - holding part, 3 - head, 4 - conductive part, 4a, 4b - contact parts, 10 - electrode (positive electrode), 11 - electrode (negative electrode), 12 - brush head part, 34 - brush head press-in groove (brush head press-in part) Detailed implementation mode

[0035] Hereinafter, based on the drawings, the implementation modes of the present invention will be described in detail.

[0036] As Figures 1 to 5 shown, the toothbrush 1 includes a holding part 2 held by the user, and a head 3 provided with electrodes 10, 11 and a brush head part 12. The whole or most of the holding part 2 is formed as a paired electrode for the electrodes 10, 11 of the head 3. A power switch (not shown) for controlling the power supply, etc. is provided on the holding part 2. A battery (not shown), an AC generator (not shown), etc. are housed in the holding part 2. The battery can be charged whether in contact or not. The emission frequency of the AC generator can be arbitrarily set between 1 Hz and 3000 Hz, but is more preferably between 1 Hz and 300 Hz or between 1000 Hz and 3000 Hz, which is the optimal range for stimulating muscles. The output current value of the AC generator is set within the range that can ensure the current safety in the oral cavity (such as galvanic current) and the safety of glossopharyngeal electrostimulation (GST).

[0037] A conductive part 4 protrudes from the front end of the holding part 2, and the conductive part 4 extends linearly from the front end of the holding part 2. On the front end side of the conductive part 4, two contact parts 4a, 4b are provided at positions offset in the length direction of the conductive part 4. The two contact parts 4a, 4b and the base side (ground end) of the conductive part 4 are isolated from each other by two insulating parts 4c. Each of the contact parts 4a, 4b protrudes in the vertical direction of the conductive part, and each protruding part has a shape of a pressing knife with a tip. Each contact part is arranged in each of the electrode assembly grooves 33 described later (see Figure 4 (a)).

[0038] A pressing protrusion 2a surrounding the conductive part 4 is provided on the front end surface of the holding part 2 (see Figure 2 ).

[0039] The head 3 can be detachably connected to the holding part 2 in the manner described later. A conductive part receiving hole 31 extending in the longitudinal direction is provided inside the head 3 (see Figure 3 ). The conductive part receiving hole 31 opens on the assembly side of the holding part 2. The head 3 is installed by pressing the pressing protrusion 2a of the holding part 2 into the conductive part receiving hole 31, and can be disassembled by pulling out the pressing protrusion 2a from the conductive part receiving hole 31.

[0040] The conductive part receiving hole 31 communicates with the electrode assembly groove 33 described later on the front end side of the head 3. The front end side of the head 3 sandwiches a partition 32 located at the central position in the width direction (see Figure 5 ), and two electrode assembly grooves 33 are provided on one side (see Figure 4 (a)), and a brush head pressing groove 34 is provided on the other side (see Figure 5 ) for assembling the brush head component.

[0041] Two electrodes 10, 11 are respectively assembled in the electrode assembly grooves 33 of the head 3 in an inserted manner. During this insertion process, the two electrodes 10, 11 are pressed into the respective contact parts 4a, 4b of the conductive part 4. Thus, the electrodes 10, 11 are respectively electrically connected to the contact parts 4a, 4b of the conductive part 4. Among the two electrodes 10, 11, one is the positive electrode 10 and the other is the negative electrode 11. Each of the electrodes 10, 11 is preferably made of titanium material, stainless steel material or conductive silicon material.

[0042] The surface sides of the respective electrodes 10, 11 protrude and are exposed from the electrode assembly grooves 33 (see Figure 4 ). The central portions of the surface sides of the respective electrodes 10, 11 protrude the most, and form an arc-shaped curved surface with respect to the width direction of the head 3 (see Figure 4 (a)).

[0043] As an example of the implementation part of the present invention, the brush head part 12 includes a base 12a (see Figure 2) and a brush group 12b erected from the base 12a. The brush head 12 is detachably assembled in the brush head press-in groove 34 of the head 3. The base 12a of the brush head 12 is pressed into the brush head press-in groove 34, and the base 12a of the brush head 12 can be pulled out from the brush head press-in groove 34 by applying an external force in the opposite direction.

[0044] The brush head 12 and the two electrodes 10, 11 assembled on the head 3 in this way are respectively located on opposite sides of the head 3. And, when the brush head 12 and the two electrodes 10, 11 are assembled on the head 3, waterproofness is ensured so that no liquid such as water can seep into the inside from the outside of the head 3.

[0045] Next, the usage method of the toothbrush 1 will be described. The user holds the grip portion 2 of the toothbrush 1 with a hand and turns on the power switch (not shown).

[0046] Insert the front end of the head 3 into the oral cavity to brush teeth. At this time, the dirt on the teeth can be removed due to the friction between the brush head 12 and the teeth or the interference with foreign objects. On the other hand, when brushing the inner side (back side) of the teeth with the brush head 12, the electrodes 10, 11 mainly contact the tongue, etc., and when brushing the outer side (front side) of the teeth with the brush head 12, the electrodes 10, 11 mainly contact the skin in the oral cavity.

[0047] Here, since the saliva and tissue fluid in the oral cavity almost fill the surroundings of the electrodes 10, 11 during the toothbrushing process, a current is conducted between the positive electrode 10 and the negative electrode 11 through the human body and the grip portion 2. Thus, the cheek muscles can be stimulated from the oral cavity by ultrasonic waves, or the muscles can be contracted from the oral cavity by EMS (Electrical Muscle Stimulation). It is possible to care for the facial expression muscles while brushing teeth, has a lifting effect, and can be expected to eliminate nasolabial folds. Compared with the EMS effect of giving alternating current stimulation from the outside of the face, it is closer to the cheek muscles from the inside of the oral cavity, so stronger muscle stimulation and higher EMS effect can be expected. In particular, effective stimulation effects on the orbicularis oris muscle, major zygomatic muscle, minor zygomatic muscle, risorius muscle, and buccinator muscle are worth expecting. In addition, a cleaning effect can also be achieved through electrophoresis to clean the oral cavity.

[0048] (EMS effect of the toothbrush 1)

[0049] The EMS effect of the toothbrush 1 was confirmed based on the experimental results by having 9 subjects use the toothbrush 1 for a certain period of time. In the experiment, the subjects were divided into 3 groups, and different frequencies of alternating current (1 kHz, 10 Hz, 100 Hz) were applied for stimulation to verify the effect. Each group of subjects used the toothbrush 1 to receive current stimulation at the specified frequency and brushed teeth according to the above usage method.

[0050] Figures 6A to 12CShows the experimental results of the superiority of the EMS effect generated by the toothbrush 1. Figure 6A Shows the improvement effect of applying an AC stimulus of 1 kHz on the puppet line. Figure 6B Shows the changes in the cheek volume and the face line volume when applying an AC stimulus of 1 kHz. Figure 7 Shows the beauty improvement effect brought by applying an AC stimulus of 10 Hz. Figure 8 Shows the improvement effect of applying AC stimuli of 1 kHz, 10 Hz, and 100 Hz on skin elasticity. Figure 9 Shows the effect of applying AC stimuli of 1 kHz, 10 Hz, and 100 Hz on blood flow improvement. Figure 10 Shows the effect of applying AC stimuli of 1 kHz, 10 Hz, and 100 Hz on the change in the buccal muscle thickness. Figure 11 Shows the effect of applying AC stimuli of 1 kHz, 10 Hz, and 100 Hz on the change in the thickness of the laughing muscle. Figure 12A Shows the effect of applying AC stimuli of 1 kHz, 10 Hz, and 100 Hz on the hardness of the major zygomatic muscle. Figure 12B Shows the effect of applying AC stimuli of 1 kHz, 10 Hz, and 100 Hz on the hardness of the buccal muscle. Figure 12C Shows the effect of applying AC stimuli of 1 kHz, 10 Hz, and 100 Hz on the hardness of the laughing muscle.

[0051] By applying an AC stimulus of 1 kHz, it was confirmed that the volume of the cheek and the face line changed, and the puppet line was improved.

[0052] As Figure 6A shown, the length, area, and volume of the puppet line of the subject changed before using the toothbrush 1, immediately after use (at the time of use), and 4 weeks later. Figure 6A The vertical axis of

[0053] Figure 6B represents the relative value, with the state before use as 100%, and the change rate is marked. It can be confirmed that the area of the puppet line significantly decreased after using the toothbrush 1 and remained at about 91% after 4 weeks. In addition, the length and volume of the puppet line also decreased after using the toothbrush 1. In particular, the volume of the puppet line improved to about 80% after 4 weeks. This indicates that the low-frequency stimulus of 1 kHz is effective in improving the length and volume of the puppet line. Figure 6BTwo parameters, "cheek volume" and "jawline volume", are shown. After using the toothbrush 1, the jawline volume increased slightly while the cheek volume decreased. In particular, the cheek volume decreased significantly after using the toothbrush 1 and although it recovered somewhat after 4 weeks, it was still lower than the pre - use level. At the same time, the volume of the jawline increased after use but decreased after 4 weeks, and the final volume was less than the pre - use state. Figure 6B It was shown that applying a low - frequency stimulation of 1 kHz caused temporary changes in the volumes of the cheeks and the jawline and subsequent improvement was observed.

[0054] In addition, by applying an alternating current stimulation of 10 Hz with the toothbrush 1, improvement in the area and volume of nasolabial folds was confirmed. As Figure 7 shown, after using the toothbrush 1 with an alternating current stimulation of 10 Hz frequency, changes in the area and volume of nasolabial folds were confirmed before and after using the toothbrush 1. Figure 7 The vertical axis of

[0055] As Figure 7 shown, it was confirmed that the area of nasolabial folds decreased to about 96% and the volume of nasolabial folds decreased to about 87%. This indicates that low - frequency stimulation of 10 Hz has a significant short - term improvement effect on facial muscles and nasolabial folds. In particular, the significant reduction in the area and volume of nasolabial folds is directly related to facial firming and wrinkle reduction.

[0056] In addition, by applying alternating current stimulations of 1 kHz, 10 Hz, and 100 Hz with the toothbrush 1, improvement in skin elasticity was confirmed. Figure 8 Shows the results of using the toothbrush 1 with alternating current stimulations of 1 kHz, 10 Hz, and 100 Hz, the change in skin elasticity (R2 value). Figure 8 The vertical axis of

[0057] As Figure 8 shown, in the case of using the toothbrush 1 with an alternating current stimulation of 1 kHz frequency, the skin elasticity immediately decreased to about 97% after use but recovered after 4 weeks and finally returned to about 98% level. No immediate effect could be confirmed at a frequency of 1 kHz, but it was shown that it can maintain a stable state of skin elasticity.

[0058] As Figure 8 shown, in the case of using the toothbrush 1 with an alternating current stimulation of 10 Hz frequency, the skin elasticity increased rapidly to about 106% and remained at a high elasticity of over 104% even after 4 weeks. This indicates that the 10 Hz stimulation has a significant effect on enhancing skin firmness and elasticity.

[0059] As Figure 8 shown, when using the toothbrush 1 with an alternating current stimulation of 100 Hz frequency, the skin elasticity immediately increases to about 104% after use. Although it slightly decreases after 4 weeks, it still maintains an elasticity above 101%. This indicates that the stimulation of 100 Hz has a certain effect on improving skin firmness and elasticity. Figure 8 The experimental results of Figure 8 show that low-frequency stimulations of different frequencies have different effects on skin elasticity. In particular, the frequencies of 10 Hz and 100 Hz have significant effects on skin firming and elasticity restoration.

[0060] In addition, by applying alternating current stimulations of 1 kHz, 10 Hz, and 100 Hz with the toothbrush 1, it is confirmed that the blood flow has been improved. Figure 9 shows the results of using the toothbrush 1 with alternating current stimulations of 1 kHz, 10 Hz, and 100 Hz frequencies, the change in blood flow of the facial skin. The improvement of blood flow helps to enhance the facial beauty effect and skin health. Figure 9 The vertical axis of Figure 9 represents the relative value of blood flow. Taking the state before using the toothbrush 1 as 100%, the blood flow immediately after use, one week after use, and four weeks after use is compared.

[0061] As Figure 9 shown, when using the toothbrush 1 with an alternating current stimulation of 1 kHz frequency, the blood flow immediately increases by about 104% after use, and the blood flow still maintains a stable improvement effect of about 105% after 4 weeks.

[0062] As Figure 9 shown, when using the toothbrush 1 with an alternating current stimulation of 10 Hz frequency, it is confirmed that there is no significant change in the blood flow immediately after use, but it then rises rapidly, and the blood flow increases significantly to exceed 114% after 4 weeks. This result indicates that the stimulation of 10 Hz has the effect of dilating blood vessels and significantly increasing blood flow.

[0063] As Figure 9 shown, when using the toothbrush 1 with an alternating current stimulation of 100 Hz frequency, the blood flow hardly changes immediately after use, but then gradually increases, and the blood flow increases to about 106% after 4 weeks. Figure 9 The experimental results of Figure 9 show that low-frequency stimulations of different frequencies have different effects on blood flow. In particular, the frequencies of 10 Hz and 100 Hz have significant effects on long-term blood flow promotion.

[0064] Figure 10 shows the results of using the toothbrush 1 with alternating current stimulations of 1 kHz, 10 Hz, and 100 Hz frequencies, the cosmetic improvement effect on the thickness of the buccinator muscle (cheek muscle). Figure 10 The vertical axis of Figure 10 represents the relative value. Taking the state before using the toothbrush 1 as 100%, the change in the thickness of the buccinator muscle before and 4 weeks after use at each frequency is compared.

[0065] As Figure 10 shown, when using the toothbrush 1 with an alternating current stimulation applied at a frequency of 1 kHz, the thickness of the buccal muscle hardly changed after 4 weeks and remained at about 100%. It can be seen that at this frequency, the expected long-term effect is small.

[0066] As Figure 10 shown, when using the toothbrush 1 with an alternating current stimulation applied at a frequency of 10 Hz, the thickness of the buccal muscle increased to about 118% after 4 weeks, and a significant improvement effect was confirmed. The results show that the stimulation at 10 Hz is particularly effective for the increase and tightening of the buccal muscle.

[0067] As Figure 10 shown, when using the toothbrush 1 with an alternating current stimulation applied at a frequency of 100 Hz, the buccal muscle thickness increased to about 110%, and a relatively high improvement effect was obtained. Although not as significant as 10 Hz, 100 Hz also contributes to the tightening of the muscle and the increase in thickness.

[0068] Figure 11 The changes in the thickness of the laughing muscle are shown for the results of using the toothbrush 1 with alternating current stimulations applied at frequencies of 1 kHz, 10 Hz, and 100 Hz. Figure 11 The vertical axis represents the relative value, with the state before use taken as 100%, and shows the changes in the thickness of the laughing muscle before and after 4 weeks at each frequency.

[0069] As Figure 11 shown, when using the toothbrush 1 with an alternating current stimulation applied at a frequency of 1 kHz, the thickness of the laughing muscle increased to about 110% after 4 weeks, indicating a certain improvement effect.

[0070] As Figure 11 shown, when using the toothbrush 1 with an alternating current stimulation applied at a frequency of 10 Hz, the thickness of the laughing muscle increased to about 118%, and a large and significant effect was confirmed. The stimulation at 10 Hz is particularly effective for the tightening of the laughing muscle.

[0071] As Figure 11 shown, when using the toothbrush 1 with an alternating current stimulation applied at a frequency of 100 Hz, the thickness of the laughing muscle increased to about 122%, indicating the greatest effect. The stimulation at 100 Hz is the most effective for the laughing muscle.

[0072] From Figure 11 it can be seen that different effects occurred in the thickness of the laughing muscle due to different frequencies. In particular, 100 Hz showed the greatest effect, followed by 1 kHz with a relatively high effect. Although the effect of 10 Hz is not as significant as the other two frequencies, a certain improvement effect can also be confirmed.

[0073] Properly adjusting the stiffness of facial muscles and balancing firmness and relaxation are important factors in beauty care. Figures 12A to 12C The results of using the toothbrush 1 applying frequencies of 1 kHz, 10 Hz, and 100 Hz are shown, including the changes in the hardness of the major zygomatic muscle, buccinator muscle, and risorius muscle. The hardness of the major zygomatic muscle increases to about 104% at 1 kHz, showing a muscle firming effect, while at frequencies of 10 Hz and 100 Hz, the hardness decreases to about 97% and about 95% respectively, showing significant relaxation effects. The buccinator muscle shows a certain firming effect at 1 kHz and 100 Hz, especially increasing to about 105% at 1 kHz, while the hardness decreases to about 98% at 10 Hz, indicating a relaxation effect. The hardness of the risorius muscle drops significantly to about 85% at 1 kHz, showing a strong relaxation effect. There are no significant changes in the hardness of the risorius muscle at 10 Hz and 100 Hz. The above results show that 1 kHz mainly has a significant effect on muscle firming, especially effective for the major zygomatic muscle and buccinator muscle, and has a relaxation effect on the risorius muscle. 10 Hz mainly promotes muscle relaxation, 100 Hz has a strong relaxation effect on the major zygomatic muscle, and has a mild firming effect on other muscles.

[0074] From the above experimental results, it can be confirmed that low-frequency stimulations of 1 kHz, 10 Hz, and 100 Hz bring different beauty effects respectively. In particular, 10 Hz has a significant effect on promoting skin elasticity and blood flow, while 100 Hz shows superior effects in increasing muscle thickness. Although 1 kHz also shows certain effects, it is difficult to expect significant improvements in the short term, but long-term use may bring stable effects. By flexibly using these frequencies, comprehensive beauty improvements can be achieved.

[0075] Even when not brushing teeth, the toothbrush 1 can be inserted into the oral cavity, and the mimetic muscles can be cared for by massaging the oral skin and other methods to obtain the same effects as above.

[0076] On the other hand, when the muscles around the mouth degenerate, it will lead to mouth relaxation, drooping corners of the mouth, nasolabial folds, and marionette lines. Since the muscles around the mouth are connected to various mimetic muscles such as the buccinator muscle, risorius muscle, and minor zygomatic muscle, exercising these muscles can not only improve the mouth area but also have an impact on the cheeks and lifting effects.

[0077] In this regard, according to this embodiment, through the above actions, effects such as promoting the improvement of cheek relaxation, mouth lifting, lifting of the corners of the mouth (the corners of the mouth naturally turn up through the mouth firming effect), increased blood flow (promoting blood circulation, relaxing stiff muscles and discharging waste, thereby improving swelling), and enriching facial expressions (since it is connected to various mimetic muscles, the expressions can be made more abundant) can be achieved.

[0078] In addition, for the elderly, the degeneration or stiffness of the muscles around the mouth can lead to a reduced range of motion of the mandibular joint and the tongue, which in turn causes a decrease in saliva secretion, chewing force, and swallowing function.

[0079] In this regard, according to this embodiment, through the above effects, it is possible to promote pronunciation improvement (clearer pronunciation), gum care (the effect of microcurrent acting on the gums), blood flow increase (promoting blood circulation and relaxing stiff muscles), improvement of the oral environment (increasing saliva volume), etc. In addition, by improving the oral environment, it is also possible to prevent dental caries, periodontal disease, bad breath, and promote the improvement of swallowing function.

[0080] As described above, the toothbrush 1 includes: a grip portion 2 that protrudes a conductive portion 4 from the front end; a head 3 that is detachably mounted on the grip portion 2 in a state where it can be accommodated within the conductive portion 4; electrodes 10, 11 mounted on the head 3 and electrically connected to the contact portions 4a, 4b on the conductive portion 4; and a brush head portion 12 that is detachably mounted on the head 3. Therefore, since there is no need to provide a contact structure on the conductive portion 4 from the grip portion 2 to the head 3, the structure of the conductive portion 4 is simplified, and there will be no problem of poor contact. In addition, the usage method of the toothbrush 1 can be selected to only replace the brush head portion 12, or replace the head 3 while replacing the grip portion 2, and replace the brush head portion 12 and the electrodes 10, 11 according to the needs of the user.

[0081] Figure 4 (b) shows the electrodes 10, 11 in a modified example. A large number of protrusions 10a, 11a are uniformly provided on the surfaces of the electrodes 10, 11 in the modified example. During toothbrushing, since these protrusions 10a, 11a will contact and move on the surface of the tongue, the skin inside the mouth, etc., bacteria can be effectively removed. In addition, these protrusions can also enhance the stimulation of the buccal muscles, so it also has a certain effect on lifting the face and eliminating nasolabial folds.

[0082] Figure 13 is a diagram comparing the characteristics of various electrodes 10, 11, etc. As Figure 13 shown, when the electrodes 10, 11 are made of titanium material, the best evaluation (◎) is obtained. Titanium material has extremely high strength and durability, is used in the body of the new iPhone, and is also widely used in the medical field due to its excellent biocompatibility. In addition, titanium material also has excellent corrosion resistance, high-end texture and durability. In this case, only the brush head needs to be replaced as a consumable of the toothbrush 1.

[0083] As Figure 13As shown, when the electrodes 10 and 11 are made of SUS316L stainless steel, excellent evaluation (〇) is obtained. SUS316L stainless steel, as a medical device material, has excellent biocompatibility and high corrosion resistance, and is widely used in tableware. Its price is lower than that of titanium materials, and its workability is also better than that of titanium materials. In this case, only the brush head of the toothbrush 1 needs to be replaced as a consumable item.

[0084] As Figure 13 shown, when the electrodes 10 and 11 are made of carbon nanotubes, silicon or resin, a slightly suitable evaluation (△) is obtained. Carbon nanotubes, silicon or resin have good skin feel, low price, and mass production performance. In this case, the consumable items of the toothbrush 1 need to be replaced together with the electrodes.

[0085] As Figure 13 shown, when the electrodes 10 and 11 are silver printing, a slightly suitable evaluation (△) is obtained. Silver printing has good designability and reasonable price. In this case, the consumable items of the toothbrush 1 need to be replaced together with the electrodes.

[0086] As Figure 13 shown, when the electrodes 10 and 11 are silver filler + platinum silicon or silver filler + fluororubber, an unsuitable evaluation (×) is obtained. Silver filler + platinum silicon or silver filler + fluororubber is a unique material with good skin feel and low resistance value. However, silver filler + platinum silicon or silver filler + fluororubber has disadvantages such as high price, easy discoloration, and complex manufacturing process. If it is silver filler + platinum silicone or silver filler + fluororubber, each electrode must be replaced as a consumable item of the toothbrush 1.

[0087] Therefore, as Figure 13 shown, the electrodes 10 and 11 are preferably made of titanium or stainless steel. In addition, although Figure 13 not mentioned, conductive silicon is also a preferred material for the electrodes. Conductive silicon is obtained by mixing silver flakes, fluororubber, fluorosurfactant and organic solvents to generate silver nanoparticles, thereby obtaining conductivity. Conductive silicon is harmless to the human body even when placed in the oral cavity, has good elasticity, and feels comfortable to use. In addition, conductive silicon has high physical property stability and is not easy to age over time.

[0088] In the described embodiment, the head 3 is detachably mounted on the holding portion 2 by a press-in and pull-out method, but it can also be detachably realized by a non-press-in structure, and the structure is not limited to the press-in method.

[0089] In the described embodiment, the brush head portion 12 is detachably mounted in the brush head press-in groove 34 of the head 3 by a press-in and pull-out method, but it can also be detachably realized by non-press-in structures such as screw fixation or rotational locking, and the structure is not limited to the press-in method.

[0090] Although the electrodes 10 and 11 are respectively provided with a positive electrode 10 and a negative electrode 11, the number of electrodes is not limited. In addition, the arrangement positions of the electrodes 10 and 11 are not particularly limited.

[0091] The above has described each embodiment in detail, but the present invention is not limited to specific embodiments, and various deformations and modifications can be made within the scope of the appended claims. In addition, all or multiple constituent elements in the embodiments can be combined.

[0092] For example, in the above embodiment, the brush head portion 12 can be replaced, and an implementation component without a toothbrushing function can be used.

[0093] In addition, the following additional content is further disclosed for the above embodiments.

[0094] (Supplementary Note 1)

[0095] (1) It includes: a holding portion, a conductive portion protruding from its front end; a head that can be detachably mounted on the holding portion in a state of accommodating the conductive portion; an electrode mounted on the head and electrically connected to the contact portion of the conductive portion; and a brush head portion that is detachably mounted on the head.

[0096] (2) According to the configuration of (1), the brush head portion can be detachably mounted from the brush head pressing portion of the head by a pressing-in and pulling-out method.

[0097] (3) According to the configuration of (1), the electrode is mounted on the contact portion of the conductive portion by a pressing-in method.

[0098] (4) According to the configuration of (1), the electrode is provided on the head and is located on the opposite side of the brush head portion.

[0099] (5) According to the configuration of (1), the electrodes are of two types: a positive electrode and a negative electrode.

Claims

1. A beauty instrument, characterized in that: include: A gripping portion, which is provided with a conductive portion protruding from the front end side; A head portion, which can be detachably mounted on the grip portion in a state where the conductive portion is housed; an electrode mounted on the head and electrically connected to the contact portion of the conductive portion; and The implementation part is detachably mounted on the head and can be inserted into the oral cavity.

2. The beauty instrument according to claim 1, characterized in that: The implementation part is detachably mounted on the pressing part of the head by pressing in and pulling out.

3. The beauty instrument according to claim 1, characterized in that: The electrode is mounted on the contact portion of the conductive portion by press-fitting.

4. The beauty instrument according to claim 1, characterized in that: The electrode is located on a side of the head portion opposite to the implementation portion.

5. The beauty instrument according to claim 1, characterized in that: The electrodes are of two types: positive electrode and negative electrode.

6. The beauty instrument according to any one of claims 1 to 4, characterized in that: The implementation unit can output electrical stimulation from the oral cavity to at least one of the orbicularis oris muscle, the zygomaticus major muscle, the zygomaticus minor muscle, the smilax muscle, and the buccinator muscle.

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