Beauty device

Abstract

The present invention provides a beauty device that can apply pressure to the skin surface and effectively deliver electrical stimulation to the point of pressure. [Solution] A beauty device 1 is provided, comprising a gripping part 2, a protruding part 3 that is retractable from the gripping part and capable of pressing against the skin surface, and a power supply mechanism, wherein the protruding part has a long protruding part body 31 and at least a pair of electrodes 32 provided on the surface of the protruding part body and configured to receive current from the power supply mechanism when in contact with the skin surface.

Description

Technical Field

[0001] The present invention relates to a beauty device.

Background Art

[0002] Patent Document 1 discloses a device capable of pressing the skin surface and applying an electrical stimulus from its tip.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the device of Patent Document 1 is configured to conduct electricity between a first electrode for pressing the skin surface and a second electrode disposed at hand, and the current flow path is too long, resulting in current dissipation. Therefore, with the device of Patent Document 1, it is impossible to effectively apply an electrical stimulus to the area where the pressing stimulus is applied. Therefore, in view of the above circumstances, the present disclosure aims to provide a beauty device capable of pressing the skin surface and effectively applying an electrical stimulus to the pressed area.

Means for Solving the Problems

[0005] According to one aspect of the present invention, there is provided a beauty device including a grip portion, a protruding portion provided so as to be able to protrude and retract with respect to the grip portion and capable of pressing the skin surface, and a power supply mechanism. The protruding portion has an elongated protruding portion main body and at least a pair of electrodes provided on the surface of the protruding portion main body and configured to be supplied with current from the power supply mechanism in a state of being in contact with the skin surface.

[0006] According to such an aspect, it is possible to effectively apply an electrical stimulus to the pressed area of the skin surface. [Brief explanation of the drawing]

[0007] [Figure 1] This is a top-view perspective of the beauty device. [Figure 2] This is a perspective view from below of the beauty device. [Figure 3] This is a cross-sectional view along line AA in Figure 1. [Figure 4] This is a cross-sectional view along line BB in Figure 1. [Figure 5] This figure shows a magnified view of the area enclosed by the dashed line in Figure 3. [Figure 6] This figure shows a magnified view of the area enclosed by the dashed line in Figure 4. [Figure 7] Figure 7(a) shows the region indicated by Figure 5 and the state in which the protruding part is partially retracted into the gripping part, and Figure 7(b) shows the region indicated by Figure 6 and the state in which the protruding part is partially retracted into the gripping part. [Figure 8] Figure 8(a) shows the region indicated in Figure 5 and the second position where the protruding part is fully retracted into the gripping part, and Figure 8(b) shows the region indicated in Figure 6 and the second position where the protruding part is fully retracted into the gripping part. [Figure 9] These are illustrative diagrams showing the usage state of the protruding part (Figures 9(a) to 9(c)). [Figure 10] Figure 5 shows the region of the beauty device in one modified example. [Figure 11] Figure 10 shows the beauty device in the state shown in Figure 7(a) (Figure 11(a)) and the state shown in Figure 8(a) (Figure 11(b)). [Modes for carrying out the invention]

[0008] The beauty devices and the like related to this disclosure will be described in detail below based on the attached drawings. In this specification, as shown in each figure, the X-axis, Y-axis, and Z-axis are defined, the +Z direction is also called the "upper side", the -Z direction is also called the "lower side", the +X direction is also called the "one end side", the -X direction is also called the "other end side", the direction along the X-axis is also called the "longitudinal direction", and the direction along the Y-axis is also called the "depth direction".

[0009] [Beauty equipment] The beauty device 1 will be described with reference to Figures 1 to 9. Figure 1 is a top perspective view of the beauty device. Figure 2 is a bottom perspective view of the beauty device. Figure 3 is a cross-sectional view taken along line AA in Figure 1. Figure 4 is a cross-sectional view taken along line BB in Figure 1. Figure 5 is a magnified view of the area enclosed by the dashed line in Figure 3. Figure 6 is a magnified view of the area enclosed by the dashed line in Figure 4.

[0010] Figure 7 shows the region shown in Figure 5, with the protruding part partially retracted into the gripping part (Figure 7(a)), and the region shown in Figure 6, with the protruding part partially retracted into the gripping part (Figure 7(b)). Figure 8 shows the region shown in Figure 5, with the protruding part fully retracted into the gripping part in a second position (Figure 8(a)), and the region shown in Figure 6, with the protruding part fully retracted into the gripping part in a second position (Figure 8(b)). Figure 9 is an illustrative diagram showing the usage state of the protruding part (Figures 9(a) to 9(c)). (Overall structure)

[0011] First, let me explain the overall configuration of beauty device 1. As shown in Figure 1, the beauty device 1 comprises a gripping part 2, a protruding part 3, and a stimulating part 4. The gripping part 2 is elongated and is the part that the user grips when using the beauty device 1. The stimulating part 4 is located at a different position from the protruding part 3 of the gripping part 2 and comprises a pair of rollers 41 that come into contact with the skin surface. Each roller 41 has the function of massaging the user's skin surface and also functions as an electrode, and is configured to apply electrical stimulation to the user's skin surface.

[0012] The protruding part 3 has a long protruding part main body 31 and a pair of electrodes 32 provided on the surface of the protruding part main body 31 and exposed, which can apply electrical stimulation to the skin surface. The protruding part 3 is configured to be able to press the skin surface. Further, the protruding part 3 is biased toward one end side (+X direction), and is displaceable (able to protrude and retract) with respect to the gripping part 2 between a first position protruding from the gripping part 2 and a second position at least a part of which is immersed in the gripping part. Specifically, the protruding part 3 moves (displaces) in the direction along the white double-headed arrow in FIGS. 1 and 2.

[0013] Here, referring to FIGS. 9(a) to 9(c), the operation when the protruding part 3 presses the skin surface will be described. First, as shown in FIG. 9(a), the protruding part 3 is brought into contact with the skin surface. At this point, the protruding part 3 biased toward one end side (+X direction) is located at the first position. Also, no current is supplied to the electrode 32 of the protruding part 3, and thus no electrical stimulation is applied to the skin surface.

[0014] Subsequently, when the protruding part 3 presses the skin surface, the protruding part 3 immerses toward the inside of the gripping part 2 as shown in FIG. 9(b). Before the protruding part 3 reaches the second position and when it has immersed a predetermined distance, current is supplied to the electrode 32, and electrical stimulation can be applied to the skin surface.

[0015] Thus, current is supplied to the electrode 32 only when the protruding part 3 is in a state of being immersed a predetermined distance, that is, when the protruding part 3 presses the skin surface and the surface of the protruding part 3 including the electrode 32 is sufficiently in contact with the skin surface. If current is supplied in a state where the contact between the electrode 32 and the skin surface is insufficient, the current does not flow smoothly between the electrode 32 and the skin surface, and there may be a tingling sensation, discomfort, pain, etc. on the skin surface. On the other hand, by configuring it like the beauty device 1, the occurrence of sensations such as tingling, discomfort, pain, etc. can be prevented or suppressed, and the usability of the beauty device 1 can be improved.

[0016] Furthermore, since a pair of electrodes 32 are provided on the protrusion 3 used for pressing the skin surface, it can be designed such that the distance between the pair of electrodes 32 becomes smaller. Therefore, in the body including the user's skin surface, the path through which the current passes can be made relatively short. As a result, it is difficult for the current to dissipate, and a high-density current can be passed through the location where stimulation is desired (for example, so-called acupoints on the human body or areas with congestion). Thus, an appropriate intensity of electrical stimulation can be applied to a limited area of the body.

[0017] According to the beauty device 1, as shown in FIG. 9(c), with the skin surface of the location where stimulation is desired being pressed by the protrusion 3, a current can be supplied to the skin surface through the electrode 32 arranged on the protrusion 3. Thus, an appropriately strong electrical stimulation can be applied to muscles, fascia, etc. It can be expected that the muscles, fascia, etc. to which the electrical stimulation is applied will contract, relax, etc., thereby promoting blood flow and lymph flow. As a result, it is also possible to achieve a beauty effect of relaxing a wider range of muscles, fascia, etc. in a chain-like manner and making it easier to discharge waste products.

[0018] (Grip portion) Next, the grip portion 2 will be described in detail. As shown in FIGS. 1 and 2, the grip portion 2 includes an upper cover 21, a lower cover 24, a protrusion-side cover 22, and a roller-side cover 23.

[0019] The upper cover 21 is a housing that constitutes the upper side (+Z direction side) of the grip portion 2, and has an operation portion 211 on its surface. The operation portion 211 is a portion operated by the user. In this embodiment, it includes a plus button 211a, a power button 211b, and a minus button 211c. The power button 211b is operated to activate the beauty device 1. The plus button 211a and the minus button 211c are operated to adjust the voltage value of the current supplied from the protrusion 3 or the stimulation portion 4.

[0020] The lower cover 24 shown in Figure 2 is a housing that constitutes the lower side (-Z direction) of the gripping portion 2, and has a charging portion 212 on its surface. The charging portion 212 includes a recess 212a and an electrical contact 212b. The beauty device 1 can be charged by aligning the electrodes of a charging device (not shown) with the recess 212a and bringing the electrodes of the charging device into contact with the electrical contact 212b. Of course, it is not limited to this, and the beauty device 1 may have, for example, a power cord that can be connected to a commercial power source.

[0021] The protruding portion side cover 22 is a housing that constitutes the part connecting the gripping portion 2 and the protruding portion 3. As shown in Figure 1, the protruding portion side cover 22 has a tapered shape in which the outer diameter of the gripping portion 2 gradually decreases toward the protruding portion 3. This ensures an appropriate thickness around the operating portion 211, maintaining stability when the user grips the gripping portion 2, while smoothly connecting the gripping portion 2 and the thin protruding portion 3. The roller-side cover 23 is a housing that forms the part connecting the gripping section 2 and the stimulating section 4. As shown in Figure 1, the gripping section 2 is branched into two toward the stimulating section 4 by the roller-side cover 23 and the upper cover 21.

[0022] As shown in Figures 3 and 4, the gripping unit 2 has a control unit 25 and a power supply unit 26 inside. The power supply unit 26 is charged via the electrical contacts 212b of the charging unit 212 and holds electrical energy to be supplied to each part of the beauty device 1. The control unit 25 has a first board 251 which is a control board and controls each part of the beauty device 1. Specifically, the control unit 25 controls operations such as receiving operations from the operation unit 211 and supplying power from the power supply unit 26 to each part of the beauty device 1. In other words, the control unit 25 and the power supply unit 26 constitute a power supply mechanism.

[0023] As shown in Figures 5 and 6, the upper cover 21 and the lower cover 24 are connected to the protruding part side cover 22 by a connecting part 28 located inside them. More specifically, the other end of the connecting part 28 fits inside the upper cover 21 and the lower cover 24, thereby connecting the upper cover 21 and the lower cover 24 to the connecting part 28. Then, one end of the connecting part 28 fits inside the protruding part side cover 22, thereby connecting the protruding part side cover 22 to the connecting part 28.

[0024] A second substrate 253 and a sealing member 29 are arranged on the first substrate 251 side of the connection portion 28. The second substrate 253 is a substrate for electrically connecting the first substrate 251 and the protrusion 3. The first substrate 251 and the second substrate 253 are electrically connected by a connection contact 252. The connection contact 252 is not particularly limited, but can be made of, for example, a leaf spring-shaped electrode piece as shown in Figure 6.

[0025] In addition to its function as a circuit board, the second substrate 253 has a sealing function that prevents liquid from entering the gripping portion 2 on the side of the first substrate 251 (opposite the buffer member). This eliminates the need to provide a strict sealing mechanism between the protruding portion 3, which extends and retracts relative to the gripping portion 2, and the gripping portion 2, thus preventing structural complexity while ensuring the smooth extension and retraction of the protruding portion 3. Furthermore, by combining the functions of a circuit board and a sealing function in the second substrate 253, the number of parts is reduced, contributing to the miniaturization and cost reduction of the beauty device 1. The sealing member 29 is a member that provides auxiliary waterproofing to the first substrate 251 side of the connection portion 28, and is made of an elastic material such as rubber.

[0026] As shown in Figure 5, the connecting portion 28 has a pair of electrode guide holes 284 that penetrate along its longitudinal direction, and the electrodes 32 of the protruding portion 3 slide (move) within these electrode guide holes 284. Specifically, as shown in Figures 5, 7(a), and 8(a), when the protruding portion 3 moves in and out between a first position and a second position, the electrodes 32 of the protruding portion 3 slide within the electrode guide holes 284 along the longitudinal direction of the electrode guide holes 284.

[0027] A spring contact 254 is positioned within the electrode guide hole 284. One end of the spring contact 254 (in the +X direction) contacts the electrode 32 of the protrusion 3 when the protrusion 3 is retracted into the gripping portion 2 as shown in Figures 7(a) and 8(a). On the other hand, the other end of the spring contact 254 (in the -X direction) (the end of the buffer member opposite to the protrusion 3) passes through the seal member 29 and is connected to the second substrate (circuit board) 253 inside the gripping portion 2. In other words, the spring contact (buffer member) 254 functions as a contact for supplying current from the power supply mechanism to the pair of electrodes 32. The spring contact 254 also constitutes a detection unit for detecting the pressure of the protrusion 3 and supplying current to the electrodes 32.

[0028] Furthermore, the spring contact 254 continues to supply current to the electrode 32 by remaining in contact with the electrode 32 as the electrode 32 of the protruding portion 3 transitions between the state shown in Figure 7(a) and the state shown in Figure 8(a). During this time, the spring contact 254 expands and contracts while being guided by the inner surface of the electrode guide hole 284. In other words, the electrode guide hole 284 guides the expansion and contraction of the spring contact 254. As a result, even if the load on the spring contact 254 fluctuates during the transition between the state shown in Figure 7(a) and the state shown in Figure 8(a), it is possible to prevent the spring contact 254 from bending or shifting in the depth direction. That is, the spring contact 254 and the electrode 32 maintain a stable electrical connection, and the supply of current to the electrode 32 can be continued.

[0029] Here, it is preferable that the connecting portion 28 be made of an insulating material such as resin. This prevents current from flowing (short circuit) between the spring contacts 254 or between the electrodes 32 to which current is supplied inside the protruding portion side cover 22.

[0030] Furthermore, when the spring contact 254 contacts the electrode 32 of the protrusion 3 at one end (+X direction), it imparts a biasing force that slightly biases the electrode 32 toward the one end (+X direction). In other words, the spring contact 254 is provided inside the gripping portion 2 and also functions as a cushioning member that contacts the protrusion 3 as it displaces from a first position to a second position, thereby providing a cushioning force. With this configuration, an additional biasing force toward the one end (+X direction) of the protrusion 3 can be added, so the biasing force of the protrusion 3 in the X direction can be gradually increased. As a result, the resistance can be gradually increased as the protrusion 3 moves (displaces) from the first position shown in Figure 5, etc., to the second position shown in Figure 8(a), thus improving the user experience.

[0031] In this way, by providing the spring contact 254 with both the functions of a contact and a cushioning member, the limited internal space of one end (+X direction) of the gripping portion 2 can be effectively utilized without increasing the number of parts or complicating the structure. Furthermore, because the structure can be simplified, the beauty device 1 can be minimized from being damaged by malfunctions or other issues. In addition, because the protruding portion 3 can be designed to have a small diameter, the skin surface of the area to be stimulated can be pressed more precisely (in a narrower area).

[0032] Here, depending on the biasing force of the spring contact 254, the user can feel a clear increase in resistance when the state shown in Figure 7(a) is reached, and thus recognize that the current can be supplied.

[0033] The other end of a coil spring (biasing member) 27 is fitted onto the outer circumference of the connecting portion 28. This coil spring 27 is provided inside the gripping portion 2 in a compressed state, and one end of it is in contact with the projection body 31 of the projection 3 (the second flange 314, which will be described later). As a result, the outer circumference of the connecting portion 28 and the second flange 314 function as spring seats for the coil spring 27, and the coil spring 27 biases the projection 3 toward one end (+X direction). In other words, the beauty device 1 further includes a biasing member provided inside the gripping portion 2 that biases the projection 3 toward a first position.

[0034] As shown in Figures 7(a) and 8(a), the coil spring 27 contracts when the protrusion 3 presses against the skin surface, allowing the protrusion 3 to move to a second position, and extends when the pressure from the protrusion 3 is released, moving the protrusion 3 toward the first position. With such a coil spring 27 provided, even if the user accidentally applies too much force when pressing the protrusion 3 against the skin surface, the protrusion 3 can be pressed against the skin surface with an appropriate amount of force.

[0035] The coil spring 27 expands and contracts along the connection portion 28. This allows the protruding portion 3 to be stably extended and retracted. The connecting portion 28 also holds and positions the other end (-X direction) of the coil spring 27. This allows the protruding portion 3 to extend and retract more stably.

[0036] As shown in Figure 6, the connecting portion 28 is further equipped with a cushioning mechanism 285. The cushioning mechanism 285 consists of a cushioning member 285a fitted into a retaining hole 285b formed on one end of the connecting portion 28. This cushioning member 285a is made of an elastic material such as urethane rubber or silicone rubber. When the protrusion 3 reaches the second position shown in Figure 8(b), the other end (-X direction) of the protrusion 3 (protrusion body 31, described later) comes into contact with the cushioning member 285a. At this time, the cushioning member 285a elastically deforms and absorbs the impact of the contact. At this time, the user can recognize that the protrusion 3 has reached the second position by a natural increase in resistance. Therefore, it is easy to prevent or suppress continuous pressing of the skin surface with too much force, and it is possible to apply stimulation to the skin surface with an appropriate force.

[0037] The coil spring 27 is further guided on its outer circumference by the guide surface 222a of the inner surface 222 of the protruding portion cover 22. As described above, the outer surface 221 of the protruding portion cover 22 is configured such that the outer diameter of the protruding portion cover 22 gradually decreases towards the protruding portion 3. On the other hand, the inner surface 222 of the protruding portion cover 22 is configured such that the inner diameter of the protruding portion cover 22 is substantially constant on the protruding portion 3 side. As a result, the protruding portion cover 22 can guide the movement between the coil spring 27 and the protruding portion 3, allowing the protruding portion 3 to extend and retract more smoothly and stably.

[0038] (protrusion) Next, the protruding portion 3 will be described. As described above, the protruding portion 3 is provided on the protruding portion side cover 22 side (one end side, +X direction side) of the gripping portion 2, and has an elongated protruding portion body 31 and a pair of electrodes 32 provided on the surface of the protruding portion body 31. The protruding body 31 is made of an insulating material such as resin, and prevents current from flowing between the pair of electrodes 32. However, when the electrodes 32 are in contact with the skin surface, current can flow between the pair of electrodes 32 through the skin surface and surrounding tissue.

[0039] When the maximum longitudinal protrusion length of the protruding body 31 relative to the gripping portion 2 is defined as LP (see Figures 5 and 6), and the maximum length in the direction perpendicular to the longitudinal direction of the protruding body 31 is defined as WP (see Figures 5 and 6), then WP / LP is preferably about 0.2 to 0.6, and more preferably about 0.3 to 0.55. By making the protruding body 31 elongated in this way, and by exposing a pair of electrodes 32 on its surface, it is possible to apply electrical stimulation effectively to the area to be stimulated while pressing deeply against the skin surface. The specific values ​​of length LP and length WP can be set as appropriate depending on the purpose, but in this embodiment, it is preferable that the value of length LP is approximately 10 mm to 20 mm, and the value of length WP is approximately 5 mm to 10 mm.

[0040] The projection body 31 has a tip portion 31a at one end (+X direction side) (its tip side) where the area of ​​the cross-section perpendicular to the longitudinal direction of the projection body 31 decreases towards the tip. This shape of the projection 3 allows for deeper pressure on the skin surface when the projection 3 is pressed against it, due to the narrower tip. On the other hand, the other end (-X direction side) of the projection body 31, perpendicular to the longitudinal direction of the projection body 31, has a substantially constant cross-sectional area. This prevents gaps from forming between the projection 3 and the projection side cover 22 when the projection 3 extends and retracts, allowing the projection 3 to operate stably.

[0041] When the maximum longitudinal protrusion length of the protruding body 31 relative to the gripping portion 2 is defined as LP (see Figures 5 and 6), WT / LP is preferably about 0.2 to 0.7, and more preferably about 0.3 to 0.6. By designing the tip portion 31a of the protruding body 31 to be thin in this way, it is possible to press deeply against the skin surface by parting the subcutaneous fat and effectively apply electrical stimulation. Furthermore, by ensuring that the tip portion 31a is not too thin, it is possible to prevent damage such as wounds to the skin surface.

[0042] Furthermore, when the maximum length of the tip portion 31a in the longitudinal direction (X direction) of the protrusion 3 is defined as LT(L) (see Figures 5 and 6), and the maximum length of the tip portion 31a in the direction perpendicular to the longitudinal direction is defined as WT(W) (see Figures 5 and 6), then WT / LT(W / L) is preferably between 0.5 and 2, and more preferably between 0.7 and 1.5. As will be described later, the electrode 32 is exposed from the tip portion 31a. By ensuring an appropriate balance between the thickness and sharpness of the tip portion 31a, it is easier to ensure a sufficient contact area between the electrode 32 and the skin surface. The length WT of the tip portion 31a can be set as appropriate, but in this embodiment, it is preferably about 3 mm to 10 mm, and more preferably about 5 mm to 9 mm.

[0043] Furthermore, the tip of the protruding portion 31a is rounded. In other words, the tip of the protruding portion 3 (tip portion 31a) is rounded yet moderately pointed. This allows for effective pressure while preventing damage to the skin surface. Moreover, it is preferable that the tip portion 31a is rounded on its sides and its cross-sectional area smoothly decreases toward one end (+X direction). Compared to the case where the tip portion 31a decreases in a straight line, this allows the skin surface to deform more easily along the surface of the protruding portion 3 when pressed against the skin surface, as shown in Figure 9(b), and makes it easier for the skin surface and electrode 32 to come into close contact. This is particularly effective when pressing on elastic skin surfaces such as the cheeks. Specifically, the radius of curvature R1 of the tip portion 31a (see Figures 5 and 6) is preferably between 1.5 mm and 4 mm, and the radius of curvature R2 of the side surface of the tip portion 31a (see Figures 5 and 6) is preferably between 5 mm and 10 mm.

[0044] The protruding part body 31 has a retaining hole 312 that penetrates in its longitudinal direction (X direction), and the electrode 32 is inserted through the retaining hole 312. The electrodes 32 are separated from each other by the protruding part body 31, such as the tip cap portion 311. The electrode 32 has a head portion 321 and a rod-shaped portion 322 that extends longitudinally at the other end. The contact surface 321a of the head portion 321 is exposed from the protruding body 31 and positioned to come into contact with the skin. The anti-detachment shape 321b of the head portion 321 protrudes inward from the protruding body 31, further inside the protruding body 31 than the contact surface 321a, thereby preventing the electrode 32 from falling off. The protruding body 31 and the electrode 32 can be manufactured, for example, by insert molding. However, the protruding body 31 and the electrode 32 may be manufactured separately and then joined together.

[0045] The contact surfaces 321a of the pair of electrodes 32 are located on the surface of the projection body 31, including the side surface of the projection body 31. Here, the side surface of the projection body 31 refers to the surface of the projection body 31 that is parallel to the longitudinal direction of the projection 3. This arrangement allows for a relatively large area of ​​the contact surface 321a of each electrode 32 that comes into contact with the skin, thereby moderately increasing the contact area between the electrode 32 (contact surface 321a) and the skin surface. This makes it possible to more effectively prevent or suppress the occurrence of tingling, discomfort, pain, etc., caused by the concentration of electric current on a limited area of ​​the skin surface.

[0046] More specifically, the contact surfaces 321a of the pair of electrodes 32 are provided on the tip portion 31a of the protrusion 3. This makes it easier to bring the electrodes 32 (contact surfaces 321a) into contact with the skin surface, and to apply electrical stimulation more locally. Also, as shown in Figure 9(b), it is easier to bring the electrodes 32 (contact surfaces 321a) into contact with the skin surface so that they are enveloped, thereby increasing the contact area between the skin surface and the electrodes to a suitable size and making it less likely to cause discomfort. Furthermore, if the tip portion 31a has the radius of curvature (especially R2) described above, it also has the effect of increasing the area on which the contact surfaces 321a can be placed.

[0047] Furthermore, even when the protruding portion 3 is retracted to the second position shown in Figure 8(a), it is preferable that the entire contact surface 321a remains exposed to the outside of the gripping portion 2. In this case, a sufficient area of ​​the electrode 32 (contact surface 321a) that can come into contact with the skin can be secured. In other words, it is preferable that the area of ​​the electrode 32 (contact surface 321a) that is exposed to the outside of the gripping portion 2 and can come into contact with the skin does not change substantially between the first and second positions.

[0048] The ratio of the area of ​​the contact surface (the part composed of electrodes) 321a to the surface area of ​​the tip portion 31a of the protruding body 31 is preferably 40% to 80%, and more preferably 50% to 70%. By making the contact surface 321a large in this way, the contact area between the skin surface and the electrode 32 can be sufficiently increased. In addition, by not making the contact surface 321a too large, it is possible to prevent current from flowing (short circuit) between the pair of electrodes 32 without going through the skin surface.

[0049] The protruding part body 31 is in contact with the inner surface 222 of the protruding part side cover 22 by the first flange 313 and the second flange 314. When the protruding part 3 extends and retracts, the first flange 313 and the second flange 314 are guided by the inner surface 222 of the protruding part side cover 22. This reduces friction between the protruding part body 31 and the protruding part side cover 22 compared to when the entire side surface of the protruding part body 31 is in contact with the protruding part side cover 22, thereby enabling smooth extension and retraction of the protruding part 3. Furthermore, since the positioning and guiding between the protruding part body 31 and the protruding part side cover 22 are performed by the two flanges, the first flange 313 and the second flange 314, the extension and retraction operation can be performed more stably compared to when positioning and guiding are performed by only one flange.

[0050] The second flange 314 is provided on one end side of the other end face 31b of the projection body 31, thereby defining a space 314a for the coil spring 27 to fit between the projection body 31 and the projection side cover 22. As a result, the second flange 314 reliably functions as a spring seat for the coil spring 27, and the coil spring 27 can be kept fixed to the projection body 31, allowing the projection 3 to extend and retract more smoothly relative to the gripping portion 2.

[0051] The first flange 313 and the second flange 314 also function as a simple waterproofing mechanism to prevent or suppress the ingress of liquid. When using the protruding part 3, even if cosmetics such as lotion, emulsion, or serum are applied to the skin surface, the two-stage protruding structure of the first flange 313 and the second flange 314 can prevent the cosmetics from entering the inside of the protruding part side cover 22 to some extent. In addition, a waterproofing body such as a packing or grease may be provided between the first flange 313 and the second flange 314. However, it is preferable that this waterproofing body is simple and has relatively weak sealing ability. In this case, it is less likely to obstruct the flow of air between the gripping part 2 and the protruding part 3, and thus smooth extension and retraction of the protruding part 3 relative to the gripping part 2 can be achieved.

[0052] Figures 5 to 8(b), etc., show an example in which a packing 33, which functions as a waterproofing element, is provided. The packing 33 has an M-shape in cross-section, and the two upper bends of the M-shape contact the inner surface 222 of the protruding part side cover 22. This prevents the packing 33 from contacting the inner surface 222 along its entire length, so as not to hinder the smooth movement (retraction and retraction) of the protruding part 3 in the longitudinal direction (X direction). In addition, since it contacts the inner surface 222 at two bends and the protruding part body 31 at three surfaces, it is possible to prevent the packing 33 from shifting relative to the protruding part body 31 and ensure a certain degree of waterproofing. Of course, it is also possible to omit the packing 33 and prioritize the smooth movement (retraction and retraction) of the protruding part 3 and the simplicity of the structure.

[0053] As mentioned above, the second substrate 253 has a sealing function, which protects electronic components such as the first substrate 251 and the power supply unit 26. This eliminates the need to install a strict waterproofing function in the movable parts around the protruding portion 3.

[0054] The electrode 32 has an elongated rod-shaped portion 322 on the other end (-X direction) from the contact surface 321a and the anti-detachment shape 321b. The rod-shaped portion 322 is inserted into the holding hole 312 of the projection body 31, and is positioned so that the vicinity of the tip 322a on the other end (-X direction) is located within the electrode guide hole 284 of the connection portion 28. When the projection 3 is pressed against the skin surface with the projection 3, and the projection 3 is retracted into the gripping portion 2 as shown in Figures 7(a) and 8(a), the tip 322a of the rod-shaped portion 322 comes into contact with the spring contact 254. As a result, current is supplied to the electrode 32 from the power supply mechanism. In other words, the electrode 32 is configured to receive current from the power supply mechanism while in contact with the skin surface.

[0055] Specifically, in the beauty device, when the protruding length of the protruding part relative to the gripping part is less than or equal to a predetermined length (predetermined value) LP' (see Figures 7(a) and 7(b)), current is supplied from the power supply mechanism to the pair of electrodes 32. This configuration prevents current from flowing when the contact area of ​​the electrodes 32 (contact surface 321a) with the skin surface is small (for example, as shown in Figure 9(a)), thereby preventing or suppressing discomfort. Specifically, the ratio of a predetermined length LP' to the maximum protruding length LP (see Figures 5 and 6) (LP' / LP) is preferably around 0.4 to 0.9, and more preferably around 0.5 to 0.85. Furthermore, the value of LP' is preferably, for example, around 7 mm to 17 mm.

[0056] Because the rod-shaped portion 322 of the electrode 32 is thinner than the thickness of the electrode 32 near the contact surface 321a, an appropriate distance can be secured between the rod-shaped portions 322 of the pair of electrodes 32. This prevents current from flowing (short-circuiting) between the pair of electrodes 32 in sections where insulating members such as the protruding body 31 and the connecting portion 28 are not placed between the pair of electrodes 32 (for example, the section indicated by S in Figure 7(a)). In other words, the current supplied from the power supply mechanism can be reliably delivered to the contact surface 321a, and electrical stimulation can be applied to the skin surface.

[0057] When the protruding portion 3 reaches the second position shown in Figure 8(b), the end face 31b of the protruding portion body 31 comes into contact with the buffer member 285a provided on the connecting portion 28. As a result, the user can recognize that the protruding portion 3 cannot be fully inserted into the gripping portion 2, as resistance increases and further movement of the protruding portion 3 to the other end is prevented.

[0058] (stimulation part) Next, the stimulating part 4 will be described. As mentioned above, the stimulating part 4 is roller-shaped. In this embodiment, an example is described in which a pair of rollers 41 are provided at the other end (-X direction) of the gripping part 2, but the invention is not limited to this. For example, the pair of rollers 41 may be provided at the center of the gripping part 2 in the longitudinal direction.

[0059] As described above, each of the pair of stimulating parts 4 also functions as an electrode, and is configured to receive current from the power supply mechanism when in contact with the skin surface. Specifically, the entire surface of the roller 41 functions as an electrode. When current is supplied to the roller 41 from the power supply mechanism, electrical stimulation can be applied to the skin surface from the roller 41. For example, when the beauty device 1 is activated and no current is being supplied to the protruding part 3, the power supply mechanism is configured to supply current to the roller 41. By rolling the roller 41 on the skin surface, electrical stimulation can be applied while massaging a wide area of ​​the skin surface.

[0060] Here, the distance between the pair of rollers 41 is greater than the distance between the pair of electrodes 32 on the protrusion 3. Therefore, the current supplied to the skin surface from the rollers 41 has a longer path across the skin surface compared to the current supplied to the skin surface from the electrodes 32 on the protrusion 3, and thus diffuses more easily across the skin surface. Compared to the protrusion 3, the rollers 41 can apply electrical stimulation to a wider area of ​​the skin surface. Furthermore, the diffused current is thought to pass through more superficial parts of the human body, and thus can stimulate muscles in superficial areas different from those stimulated by the protrusion 3.

[0061] [Beauty method] Next, we will explain an example of a beauty treatment using beauty device 1. [1] First, apply cosmetics such as lotion, emulsion, or serum to the skin surface where you want to use the beauty device 1. By applying cosmetics sufficiently, it becomes easier for current to be supplied from the contact surface 321a of the electrode 32 to the skin surface, making it easier to apply electrical stimulation of sufficient strength. In addition, friction between the beauty device 1 and the skin surface can be appropriately suppressed.

[0062] [2] Next, with the beauty device 1 activated, the protruding part 3 is pressed against the skin surface. It is particularly preferable to press on areas of the body that are considered acupressure points or areas that are stiff. It is preferable that the protruding part 3 is pushed in until the electrode 32 is in a position where it is energized (see Figures 7(a), 9(b), etc.), thereby applying electrical stimulation to the skin surface. At this time, current is supplied to the skin surface from the contact surface 321a of the electrode 32 exposed on the tip portion 31a of the protruding part 3 that is pressing against the skin surface, so it is possible to apply electrical stimulation to the muscles and fascia deep within the skin surface, which can lead to the contraction and relaxation of muscles and fascia, and the promotion of blood flow and lymph flow.

[0063] [3] After the skin is loosened deep within by the protruding part 3, the stimulating part 4 is applied to the skin surface and electrical stimulation is applied while massaging. This loosens muscles and fascia over a wider area and in the superficial layers, and is expected to provide a lifting effect by pushing up the face line, etc. In particular, by stimulating the skin surface with the protruding part 3 and then using the stimulating part 4, it is possible to promote blood flow and lymphatic flow in the deep layers, relax the surrounding muscles and fascia, and then loosen a wide range of muscles, thus providing effective stimulation. Furthermore, it is possible to approach both deep and superficial muscles and fascia.

[0064] Through the above treatment, comprehensive care can be provided to the muscles of the entire body (especially the facial muscles). Specifically, it can eliminate swelling and stiffness to improve the overall body shape (especially the face), and improve blood circulation to increase skin complexion and firmness.

[0065] [Differentiation] The following describes a modified version of the beauty device 1 mentioned above. The above embodiment and the following modified version can be combined with each other.

[0066] The electrodes on the protruding portion 3 are not limited to having one pair of electrodes, but may have two or more pairs of electrodes. In other words, the protruding portion 3 only needs to have at least one pair of electrodes 32. If the protruding portion 3 has two or more pairs of electrodes (two or more pairs of electrodes), for example, currents of different frequencies may be supplied to each electrode pair. Here, it is thought that the higher the frequency of the current, the deeper the electrical stimulation can be applied to the skin surface. In other words, with such a configuration, electrical stimulation can be applied to different depths of the skin surface targeted by each electrode pair.

[0067] The stimulating part 4 does not necessarily have to be a pair of rollers 41, and it is sufficient if it can stimulate the skin surface in a different manner than the protruding part 3. However, it is preferable that the stimulating part 4 can massage a wider area than the protruding part 3 or apply electrical stimulation, and in this case, the synergistic beauty effects described above can be achieved by using it in combination with the protruding part 3. Furthermore, the beauty device 1 does not necessarily have to have a stimulating part 4, and may be composed of, for example, a gripping part 2 and a protruding part 3. However, it is preferable to have a stimulating part 4.

[0068] As shown in Figures 10 to 11(b), the spring contact 254 connected to the control unit 25 and the tip 322a of the electrode 32 may always be in contact. Figure 10 is a diagram showing the region shown in Figure 5 for a beauty device in one modified example. Figure 11 is a diagram showing the state in Figure 7(a) (Figure 11(a)) and the state in Figure 8(a) (Figure 11(b)) for the beauty device of Figure 10. In this case, the beauty device 1 further has a Hall element 51. The Hall element 51 is connected to the control unit 25 via a connection part 511. The electrode 32 is configured to be magnetic. That is, the electrode 32 is made of a magnetic magnet or a magnetic material in contact with a magnet. When the protrusion 3 is pressed and the tip 322a of the electrode 32 approaches the Hall element 51 as shown in Figure 11(a), the control unit 25 supplies current to the electrode 32 via the spring contact 254. In other words, in this example, the Hall element 51, instead of the spring contact 254, constitutes a detection unit that detects the pressure of the protrusion 3 and supplies current to the electrode 32.

[0069] With this configuration, for example, as shown in Figure 11(b), the stronger the protrusion 3 is pressed and the closer the electrode 32 gets to the Hall element 51, the stronger the magnetic force around the Hall element 51 becomes. As a result, the stronger the protrusion 3 is pressed, the stronger the current that can be passed through the electrode 32. When the protrusion 3 is pressed strongly, as shown in Figure 9(b), it is thought that the contact surface 321a of the electrode 32, which is provided on the tip portion 31a of the protrusion 3, is enveloped by the skin surface and the two are in contact. In other words, the larger the contact area between the contact surface 321a and the skin surface, the stronger the current that can be supplied, making it easier to apply sufficient electrical stimulation to the skin surface. On the other hand, when the contact area between the contact surface 321a and the skin surface is small (the amount of pressure applied by the protrusion 3 is small), it is easier to prevent or suppress the occurrence of irritation, discomfort, pain, etc. on the skin surface by supplying a small current.

[0070] As shown in Figures 10-11(b), if the beauty device 1 has a Hall element 51, it is preferable that the beauty device 1 further has a relay magnetic body 52. ​​The relay magnetic body 52 is configured to relay the magnetic force of the electrode 32 to the Hall element 51. This makes it possible to more reliably extend the magnetic force of the electrode 32 to the Hall element 51. In other words, when the protruding portion 3 is pressed, it is easier to more reliably supply a stronger current to the electrode 32. In particular, as shown in Figure 10, etc., when the Hall element 51 is positioned away from the tip 322a of the electrode 32, such as when the Hall element 51 is positioned on the other end (-X side) of the second substrate 253, it is preferable to provide the relay magnetic body 52. ​​It is preferable that the Hall element 51 be positioned on the other end (-X side) of the second substrate 253, so that there is no need to provide a waterproof structure around the Hall element 51.

[0071] Furthermore, both the spring contact 254 and the Hall element 51 may constitute a detection unit for detecting the pressure of the protrusion 3 and supplying current to the electrode 32. That is, as shown in Figure 5, the spring contact 254 is configured not to contact the electrode 32 when the protrusion 3 is not pressed, but to contact the electrode 32 in the state shown in Figures 7 and 8, and the beauty device 1 may also be equipped with a Hall element 51 as shown in Figures 10 to 11(b). This ensures that, as shown in Figure 5, the supply of current to the electrode 32 is reliably prevented when the pressure of the protrusion 3 is insufficient. Then, as shown in Figures 7 and 11(a), the device can be configured to supply current to the electrode 32 only when the electrode 32 is in contact with the spring contact 254 and close to the Hall element 51 (see Figure 11(a)). Furthermore, as shown in Figures 8 and 11(b), when the protrusion 3 is pressed further, the magnetic force exerted by the electrode 32 around the Hall element 51 (see Figure 11(b)) increases, so the current supplied to the electrode 32 can be increased. In other words, at least one of the spring contact 254 and the Hall element 51 should constitute a detection unit for detecting the pressure of the protrusion 3 and supplying current to the electrode 32.

[0072] The frequencies of the current supplied from the power supply mechanism to the protrusion 3 and the stimulating part 4 may be the same or different. In the latter case, for example, the frequency of the current supplied to the protrusion 3 may be higher than the frequency of the current supplied to the stimulating part 4. This allows the protrusion 3 to apply electrical stimulation to deeper muscles, fascia, etc., and the stimulating part 4 to apply electrical stimulation to more superficial muscles, fascia, etc.

[0073] The control unit 25 may also be configured to issue notifications to the user. The method of this notification is not particularly limited and may include, for example, the illumination or flashing of an LED light (not shown), a beeping sound, or vibration of the gripping part 2. The control unit 25 may, for example, notify the user when a predetermined time has elapsed since the start of supplying current. The control unit 25 measures the elapsed time since the start of supplying current to the protrusion 3 or the stimulating part 4 and issues a notification to the user when the predetermined time has elapsed. The predetermined time is a suitable time for applying electrical stimulation to the skin surface and can be set as appropriate, but it is preferably set to 10 seconds or less, for example, 5 seconds. This allows the user who receives the notification to recognize that sufficient electrical stimulation has been applied to the area of ​​the skin surface currently being stimulated, and to apply stimulation to the next area. In other words, it is possible to prevent the time for applying stimulation to a specific area of ​​the skin surface from being too long or too short. The elapsed time measured here is, for example, the time elapsed from when the current actually reaches the skin surface (i.e., from when current is passed between the pair of electrodes 32), the time elapsed from when the control unit 25 starts applying voltage, etc., and can be set appropriately according to the purpose.

[0074] Furthermore, the control unit 25 may, for example, notify the user that sufficient current is not being supplied through the electrodes 32 of the protrusion 3. When supplying current to the electrodes 32 of the protrusion 3, the control unit 25 can be configured to measure the applied voltage, i.e., the resistance value, relative to the magnitude of the current that actually flows, and to issue a notification to the user if the resistance value is greater than or equal to a predetermined resistance value.

[0075] The predetermined resistance value is, for example, the value that satisfies the situation when the protrusion 3 is pressing against the skin surface, but the contact surface 321a of the electrode 32 is not in sufficient contact with the skin surface. In other words, it can be set so that the predetermined resistance value is reached when pressing on areas where the subcutaneous tissue is thin and has little elasticity, such as the forehead or collarbone. Localized pressure by the protrusion 3 is relatively unsuitable for such areas. Therefore, the control unit 25 can notify the user that these are not areas where care with the protrusion 3 is recommended by issuing a notification.

[0076] Furthermore, if the amount of cosmetics such as lotion, emulsion, and serum applied to the skin surface is insufficient, the resistance value may be set to reach a predetermined resistance value. As described above regarding the beauty method, by applying cosmetics sufficiently to the skin surface, electrical stimulation can be efficiently applied, and friction between the beauty device 1 and the skin surface can be suppressed. The user can recognize, upon receiving a notification, that they have forgotten to apply cosmetics, that the amount of cosmetics applied is insufficient, or that the cosmetics have dried out. Furthermore, the predetermined resistance value is not limited to a single value, but may be set in multiple stages. This allows the control unit 25 to notify the user, for example, that when the resistance reaches a first predetermined value, it is not a site where care with the protrusion 3 is recommended, and when the resistance reaches a second predetermined value, it is not possible to apply the cosmetic product sufficiently.

[0077] Furthermore, the control unit 25 may notify the user if the amount of pressure applied by the protrusion 3 is insufficient. For example, the control unit 25 can be configured to detect the amount of pressure applied by the protrusion 3 and issue a notification if the protrusion 3 is not fully pressed. The amount of pressure can be detected, for example, based on the amount of deflection of the spring contact 254, the output of the Hall element 51, etc. This allows the user to recognize that they may press harder against the skin surface. Conversely, the control unit 25 may notify the user that the protruding portion 3 has been fully pressed and reached a second state as shown in Figures 8(a), 8(b), and 11(b). This allows the user to recognize that the protruding portion 3 will not retract even if stronger pressure is applied, and to reduce the pressure applied to the skin surface, thus preventing excessive pressure stimulation. Furthermore, if the Hall element 51 constitutes the detection unit, the user can also recognize that no higher-intensity current will be supplied.

[0078] Furthermore, the control unit 25 may notify the user whether or not current is being supplied to the protrusion 3. The control unit 25 may detect multiple states and notify the user of each state in a different way.

[0079] The control unit 25 may be configured to switch the function of the electrode 32 of the protrusion 3 by changing the magnitude of the current supplied to the protrusion 3, that is, the magnitude of the applied voltage. For example, the control unit 25 makes the electrode 32 of the protrusion 3 function as a sensing electrode by supplying a weak current (applying a weak voltage) to the electrode 32. Then, it measures the resistance value when current is supplied to the electrode 32 as a sensing electrode and determines whether or not it is a part of the body where care with the protrusion 3 is recommended. Areas known as acupressure points on the human body are generally known to have low resistance values. Therefore, for example, if the measured resistance value is below a predetermined sensing resistance value, the user can be notified that it is a part of the body where care with the protrusion 3 is recommended. Conversely, if the measured resistance value is above a predetermined sensing resistance value, the user can be notified that it is not a part of the body where care with the protrusion 3 is recommended. Then, when actually applying electrical stimulation by pressing the protruding portion 3 against the skin surface, a current of a suitable size for electrical stimulation (larger than a weak current) is supplied to the electrode 32, causing the electrode 32 to function as a stimulating electrode.

[0080] The control unit 25 may be configured to switch the function of the electrode 32 of the protruding portion 3 between a detection electrode and a stimulating electrode depending on the amount of pressure applied to the protruding portion 3. For example, the electrode 32 may function as a detection electrode when the amount of pressure applied to the protruding portion 3 is less than a predetermined amount, and as a stimulating electrode when the amount of pressure applied to the protruding portion 3 is equal to or greater than the predetermined amount.

[0081] Furthermore, the control unit 25 may use the same circuit by switching between them as the circuit for supplying current to the protruding part 3 and the stimulating part 4, or it may use separate circuits. The product may be provided in any of the following embodiments.

[0082] (1) A beauty device comprising a gripping portion, a projection portion that is retractable from the gripping portion and capable of pressing against the skin surface, and a power supply mechanism, wherein the projection portion comprises a long projection body and at least a pair of electrodes provided on the surface of the projection body and configured to receive current from the power supply mechanism when in contact with the skin surface.

[0083] (2) A beauty device as described in (1) above, wherein the at least pair of electrodes are provided on the surface of the protruding body at a position that includes the side surface of the protruding body.

[0084] (3) A beauty device according to (1) or (2) above, wherein the protruding body has a tip portion on its tip side in which the area of ​​the cross-section perpendicular to the longitudinal direction of the protruding body decreases toward the tip side.

[0085] (4) A beauty device as described in (3) above, wherein the at least pair of electrodes are provided at the tip portion, and the ratio of the area of ​​the portion composed of the electrodes to the surface area of ​​the tip portion is 40% or more and 80% or less.

[0086] (5) A beauty device as described in (4) above, wherein when the maximum length of the tip portion in the longitudinal direction of the protrusion is L, and the maximum length of the tip portion in the direction perpendicular to the longitudinal direction is W, W / L is 0.5 or more and 2 or less.

[0087] (6) A beauty device according to any one of (1) to (5) above, wherein the protruding portion is configured to be displaceable between a first position in which it protrudes from the gripping portion and a second position in which at least a part thereof is retracted into the gripping portion, and the beauty device further comprises a biasing member provided inside the gripping portion for biasing the protruding portion toward the first position.

[0088] (7) A beauty device as described in (6) above, wherein when the length of the protrusion of the protrusion of the protrusion of the protrusion of the gripping portion is less than or equal to a predetermined value, the power supply mechanism is configured to supply current to the at least pair of electrodes.

[0089] (8) A beauty device according to (6) or (7) above, further comprising a cushioning member provided inside the gripping portion, which contacts the protruding portion that is displaced from the first position toward the second position to provide cushioning force.

[0090] (9) A beauty device as described in (8) above, wherein the buffer member further functions as a contact for supplying current from the power supply mechanism to the at least pair of electrodes.

[0091] (10) A beauty device according to (8) or (9) above, further comprising a circuit board provided inside the gripping portion and connected to the end of the cushioning member opposite to the protruding portion.

[0092] (11) A beauty device as described in (10) above, wherein the circuit board has a sealing function to prevent liquid from entering on the side opposite to the buffer member.

[0093] (12) A beauty device according to any one of (1) to (11) above, further comprising a pair of stimulating parts provided at a position different from the protruding part of the gripping part and in contact with the skin surface, wherein each of the pair of stimulating parts has an electrode and is configured to be supplied with current from the power supply mechanism while in contact with the skin surface.

[0094] (13) A beauty device as described in (12) above, wherein the stimulating part is in the shape of a roller. Of course, this is not always the case.

[0095] As previously described, various embodiments of the present invention have been explained, but these are presented as examples only and do not limit the scope of the invention in any way. The novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims of the invention and its equivalents. [Explanation of symbols]

[0096] 1: Beauty device 2: Grip part 21: Top cover 211:Operation unit 211a: Plus button 211b: Power button 211c: Minus button 212 :Charging part 212a: depression 212b: Electrical contact 22: Cover on the protruding part side 221: External surface 222: Inner self 222a: Guide surface 23: Roller side cover 24: Lower cover 25: Control Unit 251: First substrate 252: Connection contact 253: Second substrate 254: Spring contact 26: Power supply section 27: Coil spring 28: Connection part 284: Electrode guide hole 285:Buffer mechanism 285a: Cushioning material 285b: Retaining hole 29: Sealing material 3:Protrusion 31: Projection body 311: Tip cap section 312: Holding hole 313: First flange 314: Second flange 314a :Space 31a:Tip part 31b: End face 32: Electrode 321: Head section 321a: Contact surface 321b: Fall prevention shape 322: Rod-shaped part 322a: Tip 33: Packing 4: Stimulation part 41: Laura 51: Hall element 511: Connection part 52: Repeater magnetic material R1: radius of curvature R2: radius of curvature

Claims

1. It is a beauty device, The gripping part, A protruding portion is provided that can extend and retract relative to the gripping portion and is capable of pressing against the skin surface, Equipped with a power supply mechanism, The aforementioned protrusion is A long, protruding body, The protruding portion has at least one pair of electrodes provided on the surface of the main body of the protruding portion, configured to be in contact with the skin surface and to be supplied with current from the power supply mechanism, beauty equipment.

2. In the beauty device described in claim 1, The at least pair of electrodes are provided on the surface of the protruding portion body, including the side surface of the protruding portion body. beauty equipment.

3. In the beauty device described in claim 1, The projection body has a tip portion at its tip side in which the area of ​​the cross-section perpendicular to the longitudinal direction of the projection body decreases toward the tip side. beauty equipment.

4. In the beauty device described in claim 3, The at least pair of electrodes are provided at the tip portion, The ratio of the area of ​​the portion composed of the electrodes to the surface area of ​​the tip portion is 40% or more and 80% or less. beauty equipment.

5. In the beauty device described in claim 4, When L is the maximum length of the tip portion in the longitudinal direction of the protrusion, and W is the maximum length of the tip portion in the direction perpendicular to the longitudinal direction, W / L is 0.5 or more and 2 or less. beauty equipment.

6. In the beauty device described in claim 1, The protruding portion is configured to be displaceable between a first position in which it protrudes from the gripping portion and a second position in which at least a part of it is retracted into the gripping portion. The beauty device further includes a biasing member provided inside the gripping portion, which biases the protruding portion toward the first position. beauty equipment.

7. In the beauty device described in claim 6, When the protruding length of the protruding portion relative to the gripping portion is less than or equal to a predetermined value, the power supply mechanism is configured to supply current to at least one pair of electrodes. beauty equipment.

8. In the beauty device described in claim 6, Furthermore, the device includes a cushioning member provided inside the gripping portion that contacts the protruding portion which is displaced from the first position to the second position, thereby providing cushioning force. beauty equipment.

9. In the beauty device described in claim 8, The buffer member further functions as a contact for supplying current from the power supply mechanism to the at least pair of electrodes. beauty equipment.

10. In the beauty device described in claim 8, Furthermore, it includes a circuit board provided inside the gripping portion and connected to the end of the cushioning member opposite to the protruding portion, beauty equipment.

11. In the beauty device according to claim 10, The circuit board has a sealing function that prevents liquid from entering the side opposite to the buffer member. beauty equipment.

12. In the beauty device described in claim 1, Furthermore, the gripping portion is provided with a pair of stimulating parts located at positions different from the protruding portion and which come into contact with the skin surface. Each of the pair of stimulating parts has an electrode and is configured to receive current from the power supply mechanism when in contact with the skin surface. beauty equipment.

13. In the beauty device according to claim 12, The aforementioned stimulating part is roller-shaped. beauty equipment.

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