Nail tip attachment device and attachment method

Abstract

To stick a nail tip according to the own nail shape.SOLUTION: One made of a shape memory polymer is used as a nail tip, can be deformed by heating it at a predetermined temperature, then the nail tip is pressed under the prescribed pressing force to the own nail being an attachment object, and it becomes the shape according to the own nail. When the nail tip is cooled to a glass transition temperature of the shape memory polymer or less in this state, it is fixed in the shape according to the curvature of the own nail. Then, it is stuck to the own nail being the attachment object via any sticking means. As a result, the nail tip conforming to the shape of the own nail can be attached to the own nail at a low cost with only the work by the user himself / herself.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a technique for attaching a nail tip to one's own nail. [Background technology]

[0002] Ready-made nail tips (fake nails) are provided in various sizes depending on the width and curvature of the curved surface, and the user selects one that is closest to their own nails and attaches it using a fixing means such as adhesive or double-sided tape. Nail tips are made of synthetic resin, and as long as they are thin and have a certain degree of flexibility, they can be attached even if there is a slight deviation from the size of the natural nail. However, the width of the nail and the curvature of the curved surface vary greatly from person to person, and it is often difficult to find one that fits the natural nail. Also, there is a problem that the nail tips are easily removed if there is a large dimensional deviation from the natural nail size. In addition, some nail tips are thick and have poor flexibility. In contrast, when using a nail salon, the size of the natural nail, such as the width, is measured and a dedicated nail tip is made, so there is an advantage in that a nail tip with excellent fit can be obtained, but the financial burden on the user is large.

[0003] Taking this into consideration, Patent Document 1 discloses a technology in which a nail tip manufacturer sends a molding resin to a user, the user takes a mold of their own nails to create a nail model, and then sends this nail model to a nail tip manufacturer, which then uses the nail model to create a nail tip. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-137515 Summary of the Invention [Problem to be solved by the invention]

[0005] According to Patent Document 1, since the nail tips are produced using the user's own nail model, it is possible to provide nail tips that fit well to the user's nails. In addition, the user can prepare the nail model at home, and there is no need to visit a nail salon, which reduces the physical and financial burden on the user.

[0006] However, in the case of Patent Document 1, the communication with the nail tip manufacturer to take the mold of the user's nail is troublesome, and if the user is not used to the molding process, the user may move during the molding process, and the molding may not be performed properly. If the molding accuracy is poor, it will affect the dimensional accuracy of the nail tip.

[0007] The present invention has been made in consideration of the above, and has an object to provide a nail tip attachment device and attachment method that enable nail tips to be attached to one's own nails with a high degree of fit. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides A tip support portion for supporting the nail tip; a heating mechanism for heating the nail tip supported by the tip support part; having A nail tip made of a shape memory polymer is supported on the tip support portion, The nail tip can be pressed against the nail while being heated by the heating mechanism, and shaped to fit the shape of the nail. To provide a nail tip mounting device.

[0009] It is preferable that the finger support has a back support portion adjacent to the tip support portion for supporting the back side of the finger. It is also preferable that the nail tip holder further includes a pressing member for biasing the tip support portion in a direction in which the nail tip is pressed relatively against the nail.

[0010] In addition, in the present invention, A tip support portion for supporting the nail tip; a heating mechanism for heating the nail tip supported by the tip support part; Using a nail tip mounting device having A nail tip made of a shape memory polymer is supported on the tip support portion, The nail tip is pressed against the nail while being heated by the heating mechanism, shaped to fit the shape of the nail, and fixed to the nail. To provide a method for attaching a nail tip.

[0011] After the nail tip is fixed to the nail, it is preferable to further include a step of applying a curable gel nail to the surface of the nail tip, the gap between the nail and the nail tip, or the back surface of the portion of the nail tip protruding from the nail, and irradiating with ultraviolet light to cure the curable gel nail. Effect of the Invention

[0012] According to the present invention, a nail tip made of a shape memory polymer is used, which is heated to a predetermined temperature to make it deformable, and then pressed against the nail to be attached with a predetermined pressure, so that the nail tip conforms to the natural nail. If the nail tip is allowed to cool in this state below the glass transition temperature of the shape memory polymer, the nail tip is fixed in a shape that conforms to the curvature of the natural nail. Therefore, by fixing this to the natural nail to be attached, the nail tip that conforms to the shape of the natural nail can be attached to the natural nail by the user's own work alone, at low cost. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1(a) is a perspective view showing the appearance of a nail tip attachment device according to one embodiment of the present invention, and FIG. 1(b) is an exploded perspective view thereof. [Diagram 2] FIG. 2(a) is a perspective view of the second member as viewed from below, and FIG. 2(b) is a cross-sectional view taken along line AA in FIG. 2(a). [Diagram 3] FIG. 3 is a diagram for explaining a method of attaching the nail tip using the nail tip attaching device of the above embodiment. [Figure 4] FIG. 4 is a perspective view showing a part of the external appearance of a nail tip attachment device according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] The present invention will be described below based on the embodiment shown in the drawings. Figures 1 and 2 are diagrams for explaining a nail tip attachment device 1 according to one embodiment of the present invention. As shown in these drawings, the attachment device 1 of this embodiment is configured to have a first member 10 and a second member 20.

[0015] As shown in Figures 1 and 2, the first member 10 is composed of a plate-shaped member, and a groove-shaped ventral support portion 11 is formed between the front end 10a of this plate-shaped member and a midway point in the opposite direction, where the finger to be worn is placed and the ventral side of the finger is supported.

[0016] A spring member 32 is disposed around the shaft portion 31 and constitutes a pressing member in this embodiment, closer to the rear end 10b than the ventral support portion 11. The spring member 32 is formed of a torsion coil spring that stores elastic energy in the rotational direction and has the property of stretching in the winding direction. One end 32a of the wound spring member 32 abuts or engages with the plate-like member that constitutes the first member 10, and the other end 32b abuts or engages with the plate-like member that constitutes the second member 20, which will be described further below.

[0017] 1 and 2, the second member 20 is formed from a plate-like member like the first member 10, and has a groove-shaped back support portion 21 formed between the front end 20a and a midway position in the opposite direction to position the back side of the finger that protrudes upward from the front support portion 11 when the back side of the finger is placed on the front support portion 11. Therefore, when the first member 10 and the second member 20 are overlapped so that the back support portion 21 faces the front support portion 11, a finger insertion space S is formed by both of them (see FIG. 3).

[0018] As shown in Figs. 2(a) and (b), the back support part 21 has a groove-shaped tip support part 22 for supporting a nail tip formed adjacent to its tip side (closer to the other end 20b of the second member 20). The tip support part 22 has a curved groove bottom surface that fits the curved surface of the nail tip. Nail tips come in various sizes in the width and length directions. Therefore, the width and length of the tip support part 22 as well as the curvature of the curved groove bottom surface are adjusted so that a certain variety of nail tips can be arranged.

[0019] When the attachment device 1 of this embodiment is used with the first member 10 on the lower side and the second member 20 on the upper side, it is necessary to prevent the nail tip from falling when placed on the tip support part 22. This fall prevention means is not limited, but in this embodiment, a suction mechanism 23 is built into the second member 20. A suction port 23a of the suction mechanism 23 faces the tip support part 22 (see Figs. 2(a) and (b)). The nail tip can be held in the tip support part 22 by driving the suction mechanism 23.

[0020] As shown in Fig. 3, the user inserts the finger on which the nail is to be applied, aligns the position of the user's nail with the position corresponding to the tip support part 22, and stops the suction by the suction mechanism 23 in that state, so that the nail tip can be positioned on the user's nail. In addition, a configuration may be provided in which an engagement piece (not shown) that can be retracted is provided in the tip support part 22. After the nail tip is placed in the tip support part 22, the engagement piece is caused to protrude into the tip support part 22. This keeps the nail tip from falling off. When the finger is inserted and the position of the user's nail reaches a position facing the tip support part 22, the engagement piece is retracted from the tip support part 22. This allows the nail tip to be positioned on the user's nail.

[0021] 1(a), (b) and 3, the second member 20 has a flat portion 201 where the back support portion 21 and the tip holding groove 22 are formed, but an upwardly inclined portion 202 is formed from the middle toward the rear end 20b. The lower surface 202a of the inclined portion 202 is shaped so that it moves away from the opposing surface of the first member 10 toward the rear end 20b. A bearing portion 33 is provided at a boundary portion 203 between the flat portion 201 and the inclined portion 202, and this bearing portion 33 engages with the shaft portion 31 and is connected to the first member 10. As described above, the spring member 32 made of a torsion coil spring is wound around the shaft portion 31, and one end 32a of the spring member 32 is engaged with the first member 10, while the other end 32b is disposed so as to abut against the lower surface 202a of the inclined portion 202 of the second member 20, and the spring member 32 urges the lower surface 202a of the inclined portion 202 upward. Thus, the front end 20a of the second member 20 is constantly urged in a direction approaching the front end 10a of the finger holding portion 10. When the inclined portion 202 is pressed downward against the elastic force of the spring member 32, the flat portion 201 rotates upward about the shaft portion 31, and the front end 20a of the second member 20 moves upward away from the front end 10a of the finger holding portion 10. The spring member 32 is not limited to the torsion coil spring described above, and a leaf spring, a torsion bar, or the like may be used as long as it can perform the same function.

[0022] The second member 20 has a built-in heating mechanism 24. The heating mechanism 24 is provided by combining a heater with a thermostat or the like so as to be controllable to a predetermined temperature, and in this embodiment, is built into the back surface side of the tip holding groove 22. The heating mechanism 24 is set by a thermostat or the like so as to heat the nail tip held by the tip holding groove 22 to, for example, 30 to 60°C, preferably 35 to 45°C.

[0023] Next, a method for attaching a nail tip using the attachment device 1 of this embodiment will be described. (1) Preparing the nail tips A nail tip made of a shape-memory polymer is prepared. That is, when the nail tip is molded into a predetermined initial shape and heated to a predetermined temperature, it becomes soft and deformable. Once it has been deformed into the desired shape, it is allowed to cool, and when it cools below the glass transition temperature, it is fixed in the desired shape. When it is heated again to the predetermined temperature, it returns to its initial shape and can be reused.

[0024] In this case, the glass transition temperature at which the nail tip becomes deformable is not preferably too high because it is attached to the nail, but is preferably in the range of about body temperature or slightly higher, for example, 30 to 60° C., preferably 35 to 45° C., at which it becomes deformable. The heating mechanism 24 is set so that the nail tip can be heated to this glass transition temperature, and is configured so that the nail or finger is not exposed to high temperatures.

[0025] (2) Nail tip setting The above-mentioned nail tip is set on the tip support part 22 of the attachment device 1. When the switch S of the attachment device 1 is turned ON, the nail tip is sucked by the suction mechanism 23 and positioned so as not to come off from the tip support part 22 (see Figs. 2(a) and (b)).

[0026] (3) Adjusting the shape of the nail tip The inclined portion 202 of the second member 20 is pressed, and the front end 20a of the flat portion 201 is moved upward away from the front end 10a of the finger holding portion 10.

[0027] The finger on which the nail is to be applied is placed on the ventral support part 11, and the pressing force of the inclined part 202 is released. The flat part 201 returns to its original position due to the restoring force of the spring member 32, and the dorsal support part 21 is positioned on the dorsal side of the finger, as shown in Fig. 3. This places the nail tip on the natural nail.

[0028] Next, for example, when the switch S of the attachment device 1 is ON, the heating mechanism 24 is operated by operating another selector switch (not shown) attached to an appropriate location. This heats the nail tip to a predetermined temperature. When the nail tip is heated to a predetermined temperature as described above, it becomes soft and deformable. In this state, the attachment device 1 is moved left and right, or moved in a direction that rotates slightly left and right, so as to follow the curvature of the natural nail. It is also moved in a direction that rotates back and forth as necessary. As a result, the softened nail tip is deformed into a shape that follows the shape of the natural nail.

[0029] Next, the switch S of the attachment device 1 is turned OFF, or the above-mentioned changeover switch is operated, to stop heating by the heating mechanism 24 and allow it to cool. Next, the inclined portion 202 is pressed to move the front end 20a of the flat portion 201 upwardly away from the front end 10a of the finger holding portion 10, and the finger is removed. As a result, the nail tip becomes below the temperature of the glass hand, and the shape is fixed in a state where it is deformed along the natural nail.

[0030] In this embodiment, the attachment device 1 includes a heating mechanism 24 that heats and softens the nail tip, and a force that brings the nail tip into close contact with the natural nail is applied by the spring member 32. Therefore, if the attachment device 1 is moved in this state as described above, it can be easily made to conform to the shape of the natural nail.

[0031] (4) Adhesion to natural nails Once the nail tip has been deformed to fit the shape of the natural nail, it is attached to the natural nail using double-sided tape or nail glue. This allows the user to attach the nail tip to the natural nail by themselves, and the cost of attachment is low. Moreover, since it fits the shape of the natural nail, it fits perfectly.

[0032] In addition, if necessary, a curable gel nail can be applied to the entire surface of the nail tip, the gap between the natural nail and the nail tip, or the back surface of the part protruding from the natural nail, and then cured by irradiating ultraviolet rays. This increases the adhesion between the nail tip and the natural nail, making it less likely to come off. In addition, when forming a nail only with gel nails, it is necessary to layer multiple gels such as a base layer, an intermediate layer (such as a color layer), and a top layer, and to irradiate ultraviolet rays to cure each layer of gel applied. However, in this embodiment, a nail tip that conforms to the natural nail shape is attached in advance and used, so that a nail with the same texture as a nail formed by gel nails can be formed in a much shorter time than when forming a nail only with gel nails, simply by applying a gel equivalent to the top layer.

[0033] The attachment device 1 of the above embodiment is merely an example, and is not limited to the attachment device 1 of the above embodiment, as long as it can warm the nail tip to a predetermined temperature to soften it, press the nail tip against the natural nail with a predetermined force, and move the softened nail tip at least left and right so that it deforms according to the curved shape of the natural nail.

[0034] For example, in the above embodiment, the second member 20 having the tip support portion 22 is on the upper side and the first member 10 is on the lower side, but the second member 20 having the tip support portion 22 may be on the lower side and the first member 10 on the upper side. In this case, the nail tip is supported by the tip support portion 22 simply by placing the nail tip on the tip support portion 22 with its outer surface (the surface that does not adhere to the finger) facing down. Therefore, it is not essential to provide a drop prevention means such as the suction mechanism 23 in the above embodiment.

[0035] In addition, when the second member 20 having the tip support portion 22 is on the lower side, the weight of the finger can be used to easily press the nail tip supported by the tip support portion 22 against the natural nail. Therefore, as shown in FIG. 4, the attachment device 100 can be made of only a member corresponding to the second member 20 having the tip support portion 22 and the back support portion 21 that supports the back side of the finger in the heating mechanism 24. Once the nail tip is heated to a predetermined temperature, the finger placed on the back support portion 21 can be moved or the attachment device 100 can be moved to make the nail tip conform to the curved shape of the natural nail. The nail tip is fixed to the natural nail by applying nail glue or the like to both the natural nail and the nail tip, but in the case of the attachment device 100 with the tip support portion 22 on the lower side, if the nail tip that has been fixed in shape to conform to the natural nail shape is supported by the tip support portion 22 as it is, it is convenient in that nail glue or the like can be easily applied to the inner surface of the nail tip. [Explanation of symbols]

[0036] 1,100 Nail tip attachment device 10 First member 11 Ventral support part 20 Second member 21 Dorsal support part 22 Chip support 201 Flat area 202 Inclined section 203 Boundary 31 Shaft 32 Spring member plate

Claims

1. A tip support portion for supporting the nail tip; a heating mechanism for heating the nail tip supported by the tip support part; having A nail tip made of a shape memory polymer is supported on the tip support portion, The nail tip can be pressed against the nail while being heated by the heating mechanism, and shaped to fit the shape of the nail. Nail tip attachment device.

2. The finger support has a back support portion adjacent to the tip support portion, on which the back side of the finger is supported.

2. The nail tip attachment device according to claim 1.

3. The nail tip is supported by a pressing member that presses the tip support portion in a direction in which the nail tip is pressed against the nail.

2. The nail tip attachment device according to claim 1.

4. A tip support portion for supporting the nail tip; a heating mechanism for heating the nail tip supported by the tip support part; Using a nail tip mounting device having A nail tip made of a shape memory polymer is supported on the tip support portion, The nail tip is pressed against the nail while being heated by the heating mechanism, shaped to fit the shape of the nail, and fixed to the nail. How to attach nail tips.

5. After the nail tip is fixed to the nail, a step of applying a curable gel nail to the surface of the nail tip, the gap between the nail and the nail tip, or the back surface of the portion of the nail tip protruding from the nail, and curing the curable gel nail by irradiating ultraviolet light is further included. A method for attaching the nail tip according to claim 4.

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