Beauty appliance

Abstract

To provide a beauty appliance that can be used for respective parts of a body.SOLUTION: A beauty appliance 1 comprises a handle 2 to be grasped by a user, a connection part 3 held by the handle 2, and a pair of rollers 4 rotatably held by the connection part 3. The connection part 3 can displace the rollers 4 in a plurality of directions with respect to a reference position R, and can bias the rollers 4 in a direction in which the rollers 4 return to the reference position R when the rollers 4 are displaced from the reference position R.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to a cosmetic device. [Background technology]

[0002] For skin beautification, a beauty device is known that rotates a roller against the skin. For example, Patent Document 1 describes a beauty device that has a pair of support shafts located on an intersecting axis at the tip of a handle, and a rotor is rotatably supported at the tip of each support shaft, and the rotors provide a cosmetic effect on the body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-103085 A Summary of the Invention [Problem to be solved by the invention]

[0004] The cosmetic device of Patent Document 1 can press the skin with the rotating bodies or deform the skin between the rotating bodies by pinching it up, by moving the two rotating bodies back and forth while pressed against the skin. As a result, it is possible to expect cosmetic effects such as beautifying the skin. However, the cosmetic device of Patent Document 1 may pinch the skin with too much force depending on the treatment area and the positional relationship between the cosmetic device and the skin. To address this problem, a cosmetic device that can pinch the skin with an appropriate force regardless of the area being treated is desired.

[0005] The present invention has been made in view of the above background, and aims to provide a beauty device that can be suitably used on various parts of the body. [Means for solving the problem]

[0006] One aspect of the present invention is a device comprising: a handle for a user to grasp; a connection part held by the handle; A pair of rollers rotatably held at the connection portion, The connection portion is configured in a beauty device such that the roller can be displaced in multiple directions relative to a reference position and, when the roller is displaced from the reference position, the connection portion is configured to urge the roller in a direction that returns the roller to the reference position. Effect of the Invention

[0007] The cosmetic device has a connection part between the handle and the rollers. The connection part is configured to displace the rollers in a plurality of directions relative to a reference position. Therefore, for example, when using the cosmetic device, the user can displace the pair of rollers so that the distance between them increases by adjusting the force with which the pair of rollers are pressed against the skin. The connection part can displace the pair of rollers not only in the direction in which the distance increases, but also in the opposite direction to the movement direction of the cosmetic device, for example, when the cosmetic device is moved back and forth. This makes it possible to easily adjust the force with which the pair of rollers pinch the skin, and pinch the skin with an appropriate force.

[0008] In addition, the connection part is configured to bias the roller in a direction in which the roller returns to the reference position when the roller is displaced from the reference position. Therefore, for example, when a pair of rollers are displaced so that the distance between them increases, the portion sandwiched between the rollers can be pressed by the biasing force. Therefore, the beauty device can be expected to provide a good beauty effect.

[0009] As described above, according to the above-mentioned aspect, a beauty device that can be suitably used on various parts of the body can be provided. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of a cosmetic device according to an embodiment of the present invention. [Diagram 2]FIG. 2 is an exploded perspective view of the cosmetic device according to the embodiment. [Diagram 3] FIG. 3 is a top view of the cosmetic device in the embodiment. [Figure 4] FIG. 4 is a front view of the cosmetic device according to the embodiment. [Diagram 5] FIG. 5 is a side view of the cosmetic device in the embodiment. [Figure 6] FIG. 6 is a top view of a connection portion in the cosmetic device of the embodiment. [Figure 7] FIG. 7 is a bottom view of a connection portion in the cosmetic device of the embodiment. [Figure 8] FIG. 8 is a front view of the cosmetic device of the embodiment in a state pressed against the skin. [Figure 9] FIG. 9 is a side view of the cosmetic device of the embodiment in a state where the cosmetic device is moved forward while being pressed against the skin. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The cosmetic device is configured so that the position of the rollers can be displaced from a reference position when a user holds the handle and presses the pair of rollers against the skin or moves the rollers back and forth while in contact with the skin. Here, the "reference position" of the rollers refers to the position of the rollers when the cosmetic device is not in use, that is, when the pair of rollers are not in contact with the skin. The reference position exists within a range where the rollers can be displaced.

[0012] The rollers in the cosmetic device may be arranged in various ways. For example, the pair of rollers may be arranged such that, when the pair of rollers are in the reference position, the rotation center line of the first roller and the rotation center line of the second roller intersect at a position closer to the handle than each roller. In this case, by moving the cosmetic device back and forth while pressing the pair of rollers against the skin, the skin is easily pinched between the pair of rollers.

[0013] From the viewpoint of pinching the skin more reliably between the pair of rollers, the pair of rollers are preferably arranged such that the rotation center line of the first roller and the rotation center line of the second roller intersect at a position closer to the handle than each roller when they are in the reference position. In this case, the angle between the rotation center line of the first roller and the rotation center line of the second roller is preferably greater than 0° and less than 120°, more preferably 15° to 90°, even more preferably 18° to 70°, even more preferably 20° to 60°, particularly preferably 30° to 60°, and most preferably 45°.

[0014] The pair of rollers may be arranged such that the rotation center line of the first roller and the rotation center line of the second roller are parallel to each other when they are in the reference position. The cosmetic device can displace the pair of rollers by the connection part, for example, so that the distance between the first roller and the second roller increases. Therefore, regardless of the arrangement of each roller in the reference position, the rollers can be displaced so that the part where a cosmetic effect is desired is pressed by the pair of rollers.

[0015] The pair of rollers may be in contact with each other or may be spaced apart at the reference position. As described above, the pair of rollers can be displaced in multiple directions relative to the reference position. Therefore, even if the pair of rollers are in contact with each other at the reference position or the distance between the rollers is relatively narrow, the pair of rollers can be pressed against the skin and displaced from the reference position to widen the distance between the rollers, thereby realizing a state in which the skin is sandwiched between the pair of rollers. This allows the beauty device to be applied to various parts of the body.

[0016] In order to improve the comfort of using the cosmetic device, the distance between the first roller and the second roller at the reference position is preferably 50 mm or less, more preferably 30 mm or less, even more preferably 20 mm or less, particularly preferably 18 mm or less, and most preferably 15 mm or less. Note that the above-mentioned "distance between the first roller and the second roller at the reference position" refers to the minimum distance between the area on the surface of the first roller that may come into contact with the user's skin and the area on the surface of the second roller that may come into contact with the user's skin when the cosmetic device is used.

[0017] The distance between the first roller and the second roller at the reference position is preferably 1 mm or more, more preferably 3 mm or more, even more preferably 5 mm or more, and particularly preferably 7 mm or more. In this case, when the pair of rollers is pressed against the part where the beauty effect is desired, the part is naturally sandwiched to some extent between the rollers. Therefore, the user can more easily sandwich the part where the beauty effect is desired between the rollers, and the ease of handling of the beauty device can be further improved.

[0018] In determining the preferred range of the distance between the first roller and the second roller at the reference position, the above-mentioned upper and lower limits of the distance can be combined arbitrarily. For example, the preferred range of the distance between the first roller and the second roller at the reference position may be 1 mm to 50 mm, 3 mm to 30 mm, 5 mm to 20 mm, 7 mm to 18 mm, or 7 mm to 15 mm.

[0019] The shape of the roller can be various, such as spherical, columnar, etc. Here, "spherical" includes a perfect sphere and a shape that is a distortion of a perfect sphere to an extent that it is generally recognized as a sphere, such as a spheroid or teardrop shape. Also, "columnar" includes a column such as a circular cylinder or polygonal cylinder, as well as a shape with a hemisphere added to the tip of a cylinder.

[0020] It is preferable that at least a part of the roller has a spherical shape. Examples of rollers having such a shape include rollers having a spherical shape as a whole and rollers having a shape in which a plurality of spherical shapes are connected along a rotation center line. In this case, the pressing force of the rollers is easily concentrated on the part sandwiched between the pair of rollers, so that the pressing force that can be felt can be sufficiently increased, and a better beauty effect can be expected. In addition, in this case, the operation of rotating the pair of rollers while pressing them against the skin can be performed more smoothly, and the ease of handling of the beauty device can be further improved. Furthermore, in this case, the skin is easily picked up between the pair of rollers, so that the feeling of use of the beauty device can be further improved. From the viewpoint of more reliably obtaining such an action effect, it is more preferable that the entire roller has a spherical shape.

[0021] The roller may have a surface composed of smoothly curved surfaces, or may be a polyhedron having a surface composed of, for example, many triangles, quadrangles, etc. When the roller is a polyhedron, the roller surface can be prevented from slipping on the skin, compared to a roller having a surface composed of smoothly curved surfaces, and a more excellent cosmetic effect can be expected.

[0022] The roller in the cosmetic device is rotatably held by the connection part. The roller may be held by the connection part so that the center line of rotation passes through the center of gravity of the roller, or may be held by the connection part so that the center line of rotation is deviated from the center of gravity of the roller. In other words, the roller may be held by the connection part so that it rotates around its geometric center line, or may be held by the connection part in an eccentric state.

[0023] The connecting part may have a rotating shaft that holds the roller. In this case, it is preferable that at least the tip of the rotating shaft is disposed inside the roller, and it is more preferable that the entire part of the rotating shaft protruding from the connecting part is disposed inside the roller. That is, it is preferable that the rotating shaft is disposed so that it does not penetrate the roller, and the tip of the rotating shaft does not protrude outside the roller. In this way, by disposing the rotating shaft so that it does not penetrate the roller, it is possible to more easily prevent the skin from being caught between the rotating shaft and the roller, even when the angle between one rotating shaft and the other rotating shaft is relatively narrow.

[0024] The connection part is configured to apply a biasing force to the roller in a direction in which the roller returns to the reference position when the roller is displaced from the reference position. The connection part is also configured to be able to displace the roller in a plurality of directions relative to the reference position. Here, "the roller can be displaced in a plurality of directions relative to the reference position" means that the direction of displacement of the roller relative to the reference position includes a first direction and a second direction different from the first direction. That is, the connection part may be configured to be able to displace the roller in two directions, a first direction and a second direction, relative to the reference position, or may be configured to be able to displace the roller in three or more directions, a first direction, a second direction, and a direction different from these. Furthermore, the connection part may be configured to be able to displace the roller in any direction in the radial direction of a circle centered on the reference position.

[0025] In order to more reliably obtain the effect of adjusting the force pinching the skin, it is preferable that the connection part is configured so that the pair of rollers can be displaced in multiple directions including at least the direction in which the distance between them increases and the direction in which the cosmetic device moves back and forth.

[0026] The connecting portion is preferably configured to tilt the rotation center line of the roller relative to the rotation center line when the roller is in the reference position when the roller is displaced from the reference position. In this case, for example, when the pair of rollers are displaced from the reference position in a direction in which the distance between them increases or in the direction of the reciprocating movement of the beauty device, the positional relationship between the rotation center line of the roller and the skin can be changed. Then, by changing the positional relationship between the rotation center line of the roller and the skin in this way, the force with which the pair of rollers pinch the skin can be more easily adjusted to an appropriate range. As a result, the feeling of use of the beauty device can be further improved.

[0027] The connecting portion may take various forms as long as it can displace the roller in the above-mentioned manner. For example, the connecting portion may have a plurality of springs that expand and contract with the displacement of the roller. In this case, by arranging the plurality of springs so that the expansion and contraction directions are different from each other, it is possible to displace the roller in the above-mentioned manner and, when the roller is displaced from the reference position, to apply a biasing force to the roller in a direction returning it to the reference position.

[0028] The connecting portion may be configured to displace the roller in the manner described above by utilizing the elasticity of the material that constitutes the connecting portion, and to apply a biasing force to the roller in a direction that returns the roller to the reference position when the roller is displaced from the reference position. In this case, the structure of the connecting portion can be further simplified.

[0029] From the viewpoint of further improving the usability of the cosmetic device, it is more preferable that the connection part has a biasing part made of resin and / or elastomer. In this case, the connection part can displace the roller in the above-mentioned manner by utilizing the deformation of the biasing part. Furthermore, when the roller is displaced from the reference position, the connection part can apply a biasing force to the roller in a direction to return to the reference position by utilizing the elasticity of the biasing part. The biasing part may be provided in a part of the connection part, or the entire connection part may be composed of the biasing part. Moreover, the biasing part may be composed of resin or elastomer. Furthermore, the biasing part may be composed of both resin and elastomer.

[0030] Examples of the resin that can be used to form the biasing portion include polyolefin resins such as polypropylene resins, polyester resins, (meth)acrylic resins, urethane resins, and silicone resins. The elastomer that can be used to form the biasing portion may be natural rubber or a synthetic elastomer. Examples of the synthetic elastomer that can be used include thermoplastic elastomers such as urethane thermoplastic elastomers and styrene thermoplastic elastomers, acrylonitrile-butadiene rubber, and silicone rubber.

[0031] The hardness of the urethane-based thermoplastic elastomer can be easily adjusted to a desired value from a wide range, so that the magnitude of the urethane-based thermoplastic elastomer applied to the roller can be easily adjusted. In addition, the urethane-based thermoplastic elastomer is easy to color and has excellent oil resistance and abrasion resistance, so that it is suitable for the urging part of a beauty device.

[0032] The styrene-based thermoplastic elastomer has high rubber elasticity, and therefore can increase the tensile strength. The urethane-based thermoplastic elastomer also has excellent weather resistance and water resistance, and is therefore more suitable for the urging part of the beauty device. From the viewpoint of further improving the usability of the beauty device, it is preferable that the urging part is made of an elastomer.

[0033] When the biasing portion is made of an elastomer, the magnitude of the biasing force applied to the roller by the biasing portion can be adjusted by the durometer hardness of the elastomer measured using a type A durometer specified in JIS K6253-3:2012. For example, when the biasing portion is made of a styrene-based thermoplastic elastomer, the durometer hardness of the styrene-based thermoplastic elastomer constituting the biasing portion is preferably A40 or more and A90 or less, more preferably A50 or more and A80 or less, and even more preferably A60 or more and A75 or less. When the biasing portion is made of an elastomer other than a styrene-based thermoplastic elastomer, the durometer hardness of the elastomer can be appropriately adjusted according to the magnitude of the desired biasing force.

[0034] The biasing portion is preferably held by the handle, and the rigidity of the handle is preferably higher than that of the biasing portion. In this case, the pressing force when the user presses the roller against the skin and the force when the cosmetic device is moved back and forth are more easily transmitted to the roller. This can improve the usability of the cosmetic device. From the same viewpoint, it is preferable that the biasing portion is held by the handle, and the handle is configured so as not to be substantially deformed during use of the cosmetic device.

[0035] In addition, it is preferable that the rollers are held by the biasing portion, in which case the pair of rollers can be displaced more easily, thereby improving the comfort of using the beauty device.

[0036] The connecting portion is preferably configured to apply a biasing force of 1.25 kgf to 1.75 kgf when the roller is displaced 3 mm from the reference position. In this case, when the user presses the pair of rollers against the skin or moves the beauty device back and forth, the rollers can be appropriately displaced and an appropriate biasing force can be applied to the rollers. As a result, the effect of adjusting the force for pinching the skin can be more reliably obtained.

[0037] It is preferable that the handle of the cosmetic device is inclined with respect to a plane including the rotation center line of the pair of rollers at the reference position. In this case, the pair of rollers are pressed against the skin, and the cosmetic device is positioned so that the handle is aligned with the skin surface, so that the plane including the pair of rotation center lines is inclined with respect to the skin surface. Then, by moving the cosmetic device back and forth while maintaining this state, the skin can be more easily picked up between the pair of rollers. As a result, the feeling of use of the cosmetic device is improved, and better cosmetic effects can be expected. EXAMPLES

[0038] An embodiment of the cosmetic device will be described with reference to Figs. 1 to 9. As shown in Fig. 1, the cosmetic device 1 has a handle 2 that is held by a user, a connection part 3 held by the handle 2, and a pair of rollers 4 rotatably held by the connection part 3. As shown in Figs. 8 and 9, the connection part 3 is configured to displace the rollers 4 in a plurality of directions relative to a reference position R. In addition, the connection part 3 is configured to bias the rollers 4 in a direction in which the rollers 4 return to the reference position R when the rollers 4 are displaced from the reference position R.

[0039] As shown in Figs. 1, 3 and 5, the handle 2 in the cosmetic device 1 of this embodiment has a rod-like shape. A connection part 3 is provided at one end in the longitudinal direction of the handle 2. As shown in Fig. 3, the connection part 3 has a connection base 32 held by the handle 2 and two branch parts 33 protruding from the connection base 32. As shown in Figs. 3 and 4, the two branch parts 33 are formed so that the distance between them increases as they move away from the handle 2. Also, as shown in Fig. 5, the branch parts 33 extend in a direction inclined with respect to the longitudinal direction of the handle 2. As shown in Figs. 3 to 5, a roller 4 is rotatably attached to the tip of each branch part 33.

[0040] In the following description, the longitudinal direction of the handle 2 is referred to as the "longitudinal direction X", the direction from the handle 2 to the rollers 4 in the longitudinal direction X is referred to as the "forward X1", and the direction from the rollers 4 to the handle 2 is referred to as the "rearward X2". The direction in which the pair of rollers 4 are arranged is referred to as the "width direction Y". The direction perpendicular to both the longitudinal direction X and the width direction Y is referred to as the "vertical direction Z", the direction from the rollers 4 to the handle 2 in the vertical direction Z is referred to as the "upward Z1", and the direction from the handle 2 to the rollers 4 is referred to as the "downward Z2". All of these descriptions regarding the orientation of the beauty device 1 are merely expressions for convenience and have no relation to the orientation of the beauty device 1 when actually used.

[0041] As shown in Figures 1 and 2, the handle 2 in the cosmetic device 1 of this example has an upper handle cover 21 that constitutes the upper half of the outer wall of the handle 2, a lower handle cover 23 that constitutes the lower half of the outer wall of the handle 2, and a handle base 22 held between the upper handle cover 21 and the lower handle cover 23. The upper handle cover 21, the lower handle cover 23, and the handle base 22 of this example are all made of ABS resin. This provides the handle 2 with a degree of rigidity that does not deform when the cosmetic device 1 is used. In addition, a metal coating is formed on the outer surfaces of the upper handle cover 21 and the lower handle cover 23.

[0042] A lens 24 that collects light is attached to the center of the upper handle cover 21. An O-ring 241 (see FIG. 2) is sandwiched between the lens 24 and the upper handle cover 21 to prevent moisture and the like from entering through the gap between them.

[0043] A solar cell 25 is provided between the lens 24 and the handle base 22. A packing 251 (see FIG. 2) is provided around the solar cell 25 between the upper handle cover 21 and the handle base 22 to prevent moisture and the like from entering through a gap between the two. More specifically, the solar cell 25 is accommodated in a cell accommodating section 221 in the handle base 22 shown in FIG. 6. The packing 251 is accommodated in a packing retaining groove 222 provided around the cell accommodating section 221, and is sandwiched between the handle base 22 and the upper handle cover 21.

[0044] The solar cell 25 is electrically connected to the pair of rollers 4 via a bus bar 34 (see FIG. 7), a rotating shaft 35, and a conductive bearing 36 (see FIG. 2), which will be described later, and generates an electromotive force by light transmitted through the lens 24, thereby forming a potential difference between the pair of rollers 4. Therefore, the beauty device 1 can pass a weak current through a circular current path including the solar cell 25, the pair of rollers 4, and the user by bringing the pair of rollers 4 into contact with the user's skin while light is irradiated onto the solar cell 25. By passing a weak current through the user's skin, further improvement in the beauty effect can be expected.

[0045] As shown in Fig. 2, Fig. 6 and Fig. 7, the connection part 3 is disposed at the front X1 of the handle base 22 and is formed integrally with the handle base 22. As shown in Fig. 7, a bus bar 34 constituting a part of the current path between the solar cell 25 and the roller 4 is embedded in the connection part 3. One end 341 of the bus bar 34 extends to the lower part Z2 of the handle base 22 and is electrically connected to the solar cell 25 (see Fig. 2) accommodated above the handle base 22 Z1 via a current-carrying member (not shown). The other end of the bus bar is electrically connected to the rotation shaft 35.

[0046] As shown in Fig. 1, the connection part 3 of this example is entirely composed of the biasing part 31. More specifically, the connection part 3 is entirely composed of a styrene-based thermoplastic elastomer having a durometer hardness of A70 measured using a type A durometer specified in JIS K6253-3:2012. The biasing part 31 composed of such an elastomer has a lower rigidity than the handle 2. In addition, the biasing part 31 of this example can displace the roller 4 in any radial direction of a circle centered on a reference position by utilizing the elasticity of the elastomer.

[0047] 8 and 9, the urging portion 31 (i.e., the connection portion 3) of this example is configured to be able to deform as a whole in association with the displacement of the roller 4, and to apply a urging force to the roller 4 in a direction returning to the reference position R by the elasticity of the urging portion 31. The urging portion 31 of this example is configured to apply a urging force of 1.35 kgf to the roller 4 when the amount of displacement of the roller 4 from the reference position is 3 mm. In addition, the urging portion 31 is configured to incline the rotation center line C of the roller 4 with respect to the rotation center line Cr in the state in which the roller 4 is at the reference position R, when the roller 4 is displaced from the reference position.

[0048] A metal coating is formed on the surface of the biasing portion 31. The metal coating may be formed by, for example, vapor-depositing a metal on the surface of the biasing portion 31.

[0049] 2, 6 and 7, a rotating shaft 35 for holding the rollers 4 is provided at the tip of the branch portion 33 of the connection portion 3. As shown in Fig. 2, a pair of rollers 4 is attached to each rotating shaft 35 via conductive bearings 36. As a result, the rollers 4 in this example are held by the connection portion 3 (i.e., the biasing portion 31).

[0050] The rotating shafts 35 provided on the branched portion 33 protrude in the extending direction of the branched portion 33. That is, the spacing between the rotating shafts 35 increases toward the front X1 as shown in FIG. 6, and the rotating shafts 35 extend in a direction inclined obliquely downward Z2 with respect to the longitudinal direction of the handle 2 as shown in FIG. 2. The tip of the rotating shaft 35 is disposed inside the roller 4. That is, the rotating shaft 35 does not penetrate the roller 4.

[0051] The rollers 4 in this example are held by the connection part 3 so that the center line of the rotation shaft 35 coincides with the rotation center line C. Therefore, when the pair of rollers 4 (4a, 4b) in the beauty device 1 in this example are in the reference position, as shown in Figures 3 and 4, the rotation center line Ca of the first roller 4a and the rotation center line Cb of the second roller 4b are arranged to widen as they move away from the handle 2. Also, as shown in Figure 5, the handle 2 of the beauty device 1 is inclined with respect to a plane including the rotation center line C of the pair of rollers 4 in the reference position.

[0052] As shown in Fig. 1 etc., the roller 4 is a polyhedron composed of many triangles and has a substantially spherical shape. The diameter of the roller 4 in this example, that is, the maximum diameter of the roller 4 in a plane perpendicular to the rotation center line C, is 40 mm. A metal coating is formed on the surface of the roller 4. The metal coating provided on the surface of the roller 4 is in contact with the conductive bearing 36, and is electrically connected to the solar cell 25 via the conductive bearing 36, the rotating shaft 35, and the bus bar 34.

[0053] As shown in Fig. 3 and Fig. 4, the pair of rollers 4 in the beauty device 1 of this example are spaced apart from each other when in the reference position R. The distance between the first roller 4a and the second roller 4b in the reference position is specifically 9 mm. The rotation center line Ca of the first roller 4a and the rotation center line Cb of the second roller 4b are arranged to intersect at a position closer to the handle 2 than each roller 4. When the rollers 4 are in the reference position, the angle θ between the rotation center line Ca of the first roller 4a and the rotation center line Cb of the second roller 4b is 45°.

[0054] Next, an example of a method of using the beauty device 1 of this embodiment will be described. When using the beauty device 1, the user first grasps the handle 2 and presses the pair of rollers 4 against the part where the beauty effect is desired. At this time, the user may adjust the force with which the rollers 4 are pressed against the skin as necessary. For example, as shown in FIG. 8, when the force with which the rollers 4 are pressed against the skin 5 is increased, the force applied to the urging portion 31 becomes greater than the rigidity of the urging portion 31, and the urging portion 31 is deformed so as to bend toward the rear X2. As a result, the rollers 4 are displaced outward in the width direction Y from the reference position R, and the rotation center line C of the rollers 4 is inclined outward in the width direction Y with respect to the rotation center line Cr at the reference position R. As a result, the interval between the pair of rollers 4 can be made wider than the interval at the reference position R.

[0055] After that, the user moves the cosmetic device 1 back and forth in the forward and backward directions. This allows the pair of rollers 4 to press the skin. At this time, when the cosmetic device 1 is moved back and forth while being held so that the longitudinal direction X of the handle 2 is along the skin, the part of the skin in contact with the rollers 4 is deformed so as to be picked up between the pair of rollers 4 by the rotation of the rollers 4. In addition, when the cosmetic device 1 is moved back and forth, a force is applied to the rollers 4, and the urging part 31 is deformed according to the direction and magnitude of the force. For example, when the cosmetic device 1 is moved forward X1, if the force applied to the roller 4 toward the rear X2 becomes higher than the rigidity of the urging part 31, the urging part 31 is deformed so as to bend toward the rear X2 as shown in FIG. 9, and the roller 4 is displaced from the reference position R to the rear X2. Then, as the roller 4 is displaced from the reference position R, the rotation center line C of the roller 4 is inclined backward with respect to the rotation center line Cr at the reference position R. As a result, the positional relationship between the rotation center line C of roller 4 and the skin changes, and the force with which skin 5 is pinched up can be weakened appropriately.

[0056] Next, the effect of the cosmetic device 1 of this embodiment will be described. The cosmetic device 1 has a connection part 3 between the handle 2 and the rollers 4. The connection part 3 is configured to be able to displace the rollers 4 in a plurality of directions relative to the reference position R. In addition, the connection part 3 can displace the pair of rollers 4 not only in a direction in which the distance between them increases, but also in a direction along the direction of reciprocating movement when the cosmetic device 1 is reciprocated. This allows the force with which the pair of rollers 4 pinch the skin to be easily adjusted, and the skin to be pinched with an appropriate force.

[0057] Furthermore, the connection part 3 is configured to bias the roller 4 in a direction in which the roller 4 returns to the reference position R when the roller 4 is displaced from the reference position R. Therefore, for example, when a pair of rollers 4 are displaced so that the distance between them increases, the portion sandwiched between the rollers 4 can be pressed by the biasing force. Therefore, the beauty device 1 can press the skin with the rollers 4, and a good beauty effect can be expected.

[0058] In addition, the connection part 3 is configured so that when the roller 4 is displaced from the reference position R, the rotation center line C of the roller 4 can be tilted with respect to the rotation center line Cr when the roller 4 is at the reference position R. Therefore, when the pair of rollers 4 is displaced from the reference position R in a direction in which the distance between them increases (see FIG. 8) or in the direction of the reciprocating movement of the cosmetic device 1 (see FIG. 9), the positional relationship between the rotation center line C of the roller 4 and the skin 5 can be changed. By changing the positional relationship between the rotation center line C of the roller 4 and the skin 5 in this way, the force with which the pair of rollers 4 pinches the skin 5 can be more easily adjusted to an appropriate range. As a result, the feeling of use of the cosmetic device 1 can be further improved.

[0059] Furthermore, the connection part 3 has a biasing part 31 made of an elastomer. Therefore, the cosmetic device 1 uses the elasticity of the elastomer that constitutes the biasing part 31 to displace the roller 4 in the manner described above, and when the roller 4 is displaced from the reference position R, it can apply a biasing force to the roller 4 in a direction returning it to the reference position R. As a result, the structure of the biasing part 31 can be further simplified. Furthermore, by making the biasing part 31 out of an elastomer, the feeling of use of the cosmetic device 1 can be further improved.

[0060] In addition, the biasing portion 31 is held by the handle 2, and the handle 2 has a higher rigidity than the biasing portion 31. Therefore, the pressing force when the user presses the roller 4 against the skin and the force when the cosmetic device 1 is moved back and forth are more easily transmitted to the roller 4. As a result, the feeling of use of the cosmetic device 1 can be further improved.

[0061] Furthermore, the rollers 4 are held by the biasing portion 31. Therefore, the pair of rollers 4 can be displaced more easily, and the feeling of use of the cosmetic device 1 can be improved.

[0062] The connection part 3 is configured to apply a biasing force of 1.25 kgf to 1.75 kgf when the rollers 4 are displaced 3 mm from the reference position R. Therefore, when the user presses the pair of rollers 4 against the skin or moves the cosmetic device 1 back and forth, the rollers 4 can be appropriately displaced and an appropriate amount of biasing force can be applied to the rollers 4. As a result, the effect of adjusting the force for pinching up the skin can be more reliably obtained.

[0063] Furthermore, the pair of rollers 4 are disposed such that, when they are in the reference position R, the rotation center line Ca of the first roller 4a and the rotation center line Cb of the second roller 4b intersect at a position closer to the handle 2 than each roller 4, and the angle formed by the rotation center line Ca of the first roller 4a and the rotation center line Cb of the second roller 4b is greater than 0° and equal to or less than 120°. Therefore, by moving the cosmetic device 1 back and forth with the pair of rollers 4 pressed against the skin, the skin can be more easily picked up between the pair of rollers 4.

[0064] The distance between the first roller 4a and the second roller 4b at the reference position R is 50 mm or less. Therefore, the skin can be more easily pinched between the pair of rollers 4. Furthermore, the pair of rollers 4 can apply appropriate pressure to the skin and more easily pinch the skin with the pair of rollers 4, which further improves the usability of the cosmetic device 1.

[0065] In addition, the rollers 4 have a spherical shape. Therefore, the pressing force of the rollers 4 is easily concentrated on the portion sandwiched between the pair of rollers 4, so that the pressing force felt by the user can be sufficiently large, and a better beauty effect can be expected. In addition, in this case, the operation of rotating the pair of rollers 4 while pressing them against the skin can be performed more smoothly, and the ease of handling of the beauty device 1 can be further improved. Furthermore, in this case, the skin is easily pinched between the pair of rollers 4, so that the feeling of use of the beauty device 1 can be further improved.

[0066] The above describes the aspects of the beauty device based on the examples, but the specific aspects of the beauty device according to the present invention are not limited to the aspects shown in the examples and experimental examples, and the configuration can be changed as appropriate within the scope that does not depart from the spirit of the present invention.

[0067] For example, in the embodiment, the urging portion is branched into a substantially Y-shape, but the shape of the urging portion may be various other than that of the embodiment. The tip of the urging portion may protrude on both sides of the width direction Y of the cosmetic device. In this case, the rotation axis may be erected from the urging portion toward the front X1 or diagonally forward, thereby obtaining a cosmetic device that achieves the above-mentioned effects.

[0068] In the embodiment, the handle is inclined with respect to the plane including the rotation center line of the two rollers, but the handle may be provided on the plane including the rotation center line of the two rollers. In this case, the above-mentioned effect can be obtained by moving the beauty device back and forth with the handle inclined with respect to the skin of the part where the beauty effect is desired.

[0069] In the embodiment, the handle is made of a material different from the elastomer constituting the biasing portion, but the handle may be made of the same material as the elastomer constituting the biasing portion. In this case, for example, the handle may be made thicker than the biasing portion to increase the rigidity of the handle, thereby easily achieving the above-mentioned effect. In addition, for example, the handle may have a core made of elastomer and an outer shell made of a material harder than the elastomer and covering at least a part of the core. In this way, the rigidity of the handle can also be increased by providing the outer shell on the surface of the core made of elastomer.

[0070] In the embodiment, an example of a beauty device configured to generate a potential difference between a pair of rollers using a solar cell has been described, but the beauty device does not have to have a solar cell. The method of applying an electrical stimulus to the skin of the user is not limited to the method of the embodiment. For example, a piezoelectric element configured to generate an electromotive force in response to the displacement of the rollers may be provided in the biasing portion, and the piezoelectric element and the rollers may be electrically connected to apply an electrical stimulus to the user in response to the displacement of the rollers.

[0071] In addition, in the embodiment, the roller is held on the rotating shaft, but the roller may be directly held on the tip of the connecting portion or the biasing portion, for example.

[0072] The maximum diameter of the roller, the distance from the intersection of the rotation center line of the first roller and the rotation center line of the second roller to the tip of the roller, the distance between the pair of rollers at the reference position and the angle between the rotation center lines are not limited to the embodiment, and can be appropriately changed according to the part to which the beauty device is applied. For example, a beauty device in which the maximum diameter of the roller is 30 mm or more and 50 mm or less, the distance between the intersection of the rotation center line of the first roller and the rotation center line of the second roller to the tip of the roller is 30 mm or more and 50 mm or less, the distance between the pair of rollers at the reference position is 7 mm or more and 20 mm or less, and the angle between the rotation center lines of the rollers at the reference position is 20 ° or more and 60 ° or less is suitable for relatively gently curved parts of the body such as arms, legs, and sides. Furthermore, for example, a beauty device in which the maximum diameter of the rollers is 15 mm or more and 20 mm, the distance from the intersection of the rotational center line of the first roller and the rotational center line of the second roller to the tip of the roller is 10 mm or more and 20 mm or less, the distance between the pair of rollers at the reference position is 5 mm or more and 10 mm or less, and the angle between the rotational center lines of the rollers at the reference position is 20° or more and 60° or less is suitable for areas of the body with fine bumps, such as the face and hands.

[0073] The cosmetic device may have a light-emitting unit configured to change the manner of light emission, such as color tone and intensity, according to the amount of displacement of the roller. In this case, the user can visually grasp the amount of displacement of the roller, and can easily adjust the force with which the roller is pressed against the skin. As a result, the usability of the cosmetic device can be further improved. The light-emitting unit may be, for example, a light-emitting diode.

[0074] The cosmetic device may have a communication unit configured to be able to communicate with an external device. The communication unit may be configured to be able to perform wired communication with the external device, or may be configured to be able to perform wireless communication. The content of communication in the communication unit is not particularly limited. For example, the communication unit may be configured to be able to transmit the number of times the cosmetic device has been used to the external device. In this case, the usage manner of the cosmetic device is recorded in the external device, and the cosmetic effect can be easily verified by comparing it with the cosmetic effect.

[0075] The cosmetic device may have the following configurations (1) to (9).

[0076] [1] A handle that is held by a user; a connection part held by the handle; A pair of rollers rotatably held at the connection portion, The connection portion is configured to displace the roller in a plurality of directions relative to a reference position, and to urge the roller in a direction in which the roller returns to the reference position when the roller is displaced from the reference position.

[0077] [2] The beauty device described in [1], wherein the connection portion is configured to tilt the center line of rotation of the roller relative to the center line of rotation when the roller is displaced from the reference position. [3] The beauty device according to [1] or [2], wherein the connection portion has a biasing portion made of resin and / or elastomer. [4] The beauty device described in [3], wherein the biasing portion is held by the handle, and the rigidity of the handle is higher than that of the biasing portion. [5] The beauty device described in [3] or [4], wherein the roller is held by the urging portion.

[0078] [6] The beauty device described in any one of [1] to [5], wherein the connection portion is configured to impart a biasing force of 1.25 kgf or more and 1.75 kgf or less to the roller when the roller is displaced by 3 mm.

[0079] [7] A beauty device described in any one of [1] to [6], wherein when the pair of rollers are in a reference position, the rotational center line of the first roller and the rotational center line of the second roller intersect at a position closer to the handle than each roller, and the angle between the rotational center line of the first roller and the rotational center line of the second roller is 10° or more and 120° or less. [8] The beauty device according to any one of [1] to [7], wherein the distance between the first roller and the second roller at a reference position is 50 mm or less. [9] The beauty device according to any one of [1] to [8], wherein at least a portion of the roller has a spherical shape. [Explanation of symbols]

[0080] 1 beauty device 2 Handle 3 Connection 4 Roller R reference position

Claims

1. A handle that is gripped by a user; a connection part held by the handle; A pair of rollers rotatably held at the connection portion, The connection portion is configured to displace the roller in a plurality of directions relative to a reference position, and to urge the roller in a direction in which the roller returns to the reference position when the roller is displaced from the reference position.

2. The cosmetic device according to claim 1 , wherein the connection portion is configured to tilt a rotational center line of the roller relative to a rotational center line when the roller is in the reference position, when the roller is displaced from the reference position.

3. The cosmetic device according to claim 1 or 2, wherein the connecting portion has a biasing portion made of a resin and / or an elastomer.

4. The cosmetic device according to claim 3 , wherein the biasing portion is held by the handle, and the handle has a rigidity higher than that of the biasing portion.

5. The cosmetic device according to claim 3 , wherein the roller is held by the biasing portion.

6. The cosmetic device according to claim 1 or 2, wherein the connection portion is configured to apply a biasing force of 1.25 kgf or more and 1.75 kgf or less to the roller when the roller is displaced by 3 mm from a reference position.

7. 3. The beauty device according to claim 1 or 2, wherein when the pair of rollers are in a reference position, a rotational center line of the first roller and a rotational center line of the second roller intersect at a position closer to the handle than each roller, and an angle between the rotational center line of the first roller and the rotational center line of the second roller is greater than or equal to 10° and less than 120°.

8. 3. The cosmetic device according to claim 1, wherein a distance between the first roller and the second roller at a reference position is 50 mm or less.

9. The cosmetic device according to claim 1 or 2, wherein at least a portion of the roller has a spherical shape.

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