WO2007052865A1

WO2007052865A1 - Nail accessory and the mounting method thereof

Info

Publication number: WO2007052865A1
Application number: PCT/KR2006/000414
Authority: WO
Inventors: Chang Hyun Kim
Original assignee: Chang Hyun Kim
Priority date: 2005-10-31
Filing date: 2006-02-04
Publication date: 2007-05-10
Also published as: KR100605671B1

Abstract

Disclosed herein is a nail accessory to be mounted on a human nail, and more particularly, is a nail accessory which is easy to attach to and detach from nails while achieving a high attachment force and has no risk of limiting functions of the nails. The nail accessory is configured to be attached to and detached from the nail via a hole perforated through the nail. The nail accessory comprises a receiving section configured to be exposed to the outside from an upper surface of the nail after being mounted on the nail and used to receive a decorative element therein, and a mounting section helically extending downward from the receiving section to be penetrated and fixed through the hole. With this configuration, the accessory is able to be easily attached to and detached from the user's nail even in a narrow space under the nail by virtue of the mounting section having a small-volume helical wire. Also, the accessory can provide a user with stable wearing feeling without limiting operating functions of the nail, and enables the use of a variety of decorative elements selected in accordance with the user's taste or sense, to achieve various decorative effects.

Description

NAIL ACCESSORY AND THE MOUNTING METHOD

THEREOF

Technical Field

[1] The present invention relates to an accessory to be mounted on a human nail, and more particularly, to a nail accessory which is easy to attach to and detach from nails while achieving a high attachment force and has no risk of restricting functions of the nails. Background Art

[2] Conventionally, a piercing has been used as a cosmetic treatment of human nails.

Considering a known piercing method, first, an artificial nail is attached to a human nail, i.e. fingernail or toenail, by use of a binder, and then, a hole is punched through the artificial nail. Thereby, a nail accessory, which generally has a loop shape, is able to be pierced through the hole of the artificial nail.

[3] Most of accessories, using the conventional piercing hole, have a loop shape as stated above, and thus, are designed to be attached to and detached from the artificial nail by simply penetrating through the hole of the artificial nail. These accessories, generally, have a separate locking structure for the attachment/detachment thereof. Accordingly, as will be easily expected in association with the above described piercing method, it is very difficult for a user to attach and detach the accessory to and from the nail having an extremely small operating area, without the help of an assistant or without using separate tools.

[4] In the case of the loop-shaped accessories, furthermore, they are simply hung by the hole of the artificial nail, rather than being securely attached to the artificial nail. Therefore, the loop-shaped accessories have a high risk of unintentional separation, and tend to inevitably restrict original operating functions of nails when they are mounted on the nails.

[5] In the art, also, other various nail cosmetic treatments, for example, a treatment for simply attaching aesthetic stickers to nails, are known. However, there is known no cosmetic treatment for directly piercing a hole through a human nail and accessories for use with the hole of the human nail. Disclosure of Invention Technical Problem

[6] Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a nail accessory of a type using a newly improved attachment/detachment method, which is easy to attach to and detach from a nail even when a space under the nail is narrow; can provide stable wearing feeling without restricting operating functions of the nail; and can allow a free change in decorative elements to be coupled thereto in accordance with user's taste or sense, and a method for mounting the nail accessory to the nail.

Technical Solution

[7] In accordance with an aspect of the present invention, the above and other objects can be accomplished by the provision of a nail accessory, which is easy to attach to and detach from a nail via a hole perforated through the nail, comprising: a receiving section configured to be exposed to the outside from an upper surface of the nail after being mounted on the nail and used to receive a decorative element therein; and a mounting section helically extending downward from the receiving section to be penetrated and fixed through the hole.

[8] Preferably, the receiving section and the mounting section may be formed of a single helical wire. In this case, in order to fixedly maintain the decorative element, a part of the wire forming the receiving section may come into close contact with an outer circumference of the decorative element by use of an elastic force, may use a binder, or may be screwed at an end thereof into a screw bore formed in a predetermined location of the decorative element. Alternatively, the receiving section may be coupled to a separate jewelry mount, to fixedly maintain the decorative element.

[9] The shape of the helical wire has no special limit, and may have a cylindrical shape having a uniform rotation radius. Alternatively, the helical wire may have a conical shape such that a rotation radius thereof decreases downward toward an end of the mounting section about a rotary axis of the nail accessory. With this configuration, the end of the mounting section is able to be easily aligned with the hole perforated through the nail. Also, when the accessory is attached to and detached from the nail via rotating motion thereof, the accessory can exhibit reduced eccentric motion relative to the rotary axis thereof, resulting in stable attachment/detachment operations.

[10] The helical wire of the mounting section may have an inclination angle of 30° to

80° relative to the rotary axis, to satisfy both contrary requirements of high coupling force and easiness in coupling operation. Preferably, the helical wire at the end of the mounting section may have an inclination angle of 80° to 90° relative to the rotary axis, so as not to cause pain on the user's skin even when the end of the mounting section comes into direct contact with the skin.

[11] To eliminate the eccentric motion of the accessory after being mounted on the nail, preferably, a ratio of the rotation radius of the receiving section, which is located above the upper surface of the nail, relative to the rotation radius of the mounting section located beneath the upper surface of the nail, may be at least more than 1.5. [12] An outer diameter of the wire forming the end of the mounting section may be smaller than an inner diameter of the hole perforated through the nail, to allow the end of the mounting section to be easily inserted into the center of the hole when the accessory is initially mounted to the nail.

[13] A pitch distance of the helical wire with respect to the receiving section may be smaller than a thickness of the nail to which the accessory will be attached. This has the effect of preventing the receiving section from being excessively inserted through the hole perforated in the nail.

[14] A pitch distance of the helical wire with respect to at least an upper portion of the mounting section, which is received under the hole after the accessory is mounted to the nail, may be approximately equal to the thickness of the nail to which the accessory is attached. This has advantages in that the mounting section is easy to slide into or out of the hole, and that the accessory can be securely fixed to the nail without a risk of unintentional separation so long as a great external force is not applied.

[15] Although the material of the helical wire has no special limit, it is preferable that a material having a yield strength larger than that of the nail, to which the accessory will be attached, be used to prevent plastic deformation of the helical wire due to repetitive attachment and detachment operations, thereby maintaining a desired coupling force which is determined in an initial design stage.

[16] At least a part of the mounting section may be exposed to the outside from a lower surface of the nail after the accessory is mounted to the nail within a range not restricting original operating functions of the nail. In this case, it is possible to achieve an increase in coupling force.

[17] In accordance with another aspect of the present invention, there is provided a method for mounting a nail accessory to a nail, the nail accessory including a receiving section to receive a decorative element therein or to be coupled to a separate jewelry mount and a mounting section helically extending downward from the receiving section to be fixed to the nail, the method comprising: forming a hole at a predetermined location of an end of the nail to which the accessory will be attached, the hole having a diameter corresponding to an outer diameter of a wire that forms the accessory; inserting an end of the mounting section into the hole to be aligned with the hole; and rotating an upper end of the receiving section to allow the mounting section to slide through the hole and be fixedly maintained under the hole. Advantageous Effects

[18] As stated above, a nail accessory in accordance with the present invention is configured in such a fashion that a mounting section thereof takes the form of a small- volume helical wire. With this configuration, the accessory is able to be easily attached to and detached from the user's nail even in a narrow space under the nail. Also, the accessory can provide a user with stable wearing feeling without restricting operating functions of the nail, and enables the use of a variety of decorative elements selected in accordance with the user's taste or sense, to achieve various decorative effects. Brief Description of the Drawings

[19] The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[20] FlG. 1 is a perspective view illustrating a nail accessory in accordance with a first embodiment of the present invention;

[21] FlG. 2 is a perspective view of the nail accessory of FlG. 1, to which a decorative element is attached;

[22] FIGS. 3 and 4 are perspective views illustrating different first and second alternative examples of the nail accessory of FlG. 1 ;

[23] FlG. 5 is a front view of the nail accessory of FlG. 1 ;

[24] FIGS. 6 A to 6C are views illustrating a method for mounting the nail accessory in accordance with the present invention, to a human nail;

[25] FlG. 7 is a perspective view illustrating a nail accessory in accordance with a second embodiment of the present invention; and

[26] FlG. 8 is a front view of the nail accessory of FlG. 7, to which a separate jewelry mount is coupled. Mode for the Invention

[27] Now, preferred embodiments of a nail accessory in accordance with the present invention will be explained with reference to the accompanying drawings.

[28] FlG. 1 is a perspective view illustrating a nail accessory in accordance with a first embodiment of the present invention. As shown in FlG. 1, the nail accessory, designated by reference numeral 100, takes the form of a single helical wire. The nail accessory 100 includes: a decorative element receiving section 110 to be exposed to the outside from an upper surface of a human nail (See. reference numeral 301 of FlG. 6) in a state wherein the nail accessory 100 is mounted to the nail; and a mounting section 120 to be penetrated and fixed through a hole (See. reference numeral 302) that is perforated through the nail.

[29] The helical nail accessory 100 is made of a highly-elastic wire, and therefore, is adapted to come into close contact with the nail 301 in the vicinity of the hole 302 by use of an elastic force thereof. With this configuration, the nail accessory 100 of the present invention is able to be easily attached to and detached from the nail 301 even if there is only a narrow mounting space under the nail 301. Also, a thickness of the nail accessory 100, i.e. a diameter of the helical wire, is freely changeable in accordance with a diameter of the piercing hole 302 that is perforated through the nail 301 even when the diameter of the hole 302 is much small. This has the effect of minimizing damage to the nail 301.

[30] In the following description, the receiving section 110 occupies an upper portion of the nail accessory 100, and the mounting section 120 occupies a lower portion of the nail accessory 100. Also, a center axis of the helical wire is defined as a rotary axis V, and an axis perpendicular to the nail, to which the accessory 100 will be attached, is designated by reference character'O".

[31] Referring to FlG. 2, a decorative element 200 is closely inserted into a spaced defined by the wire of the receiving section 110 by use of the high elastic force of the wire. In this case, to prevent unintentional separation of the decorative element 200, it is preferable that the wire of the receiving section 110 be sized to be wound around the decorative element 200 by at least one or more turns to cover a part of an upper surface of the decorative element 200. In addition to the above described elastic coupling, or separately from the elastic coupling, the decorative element 200 is able to be more securely coupled to the receiving section 110 by use of a binder (not shown). Referring to FlG. 8, alternatively, a separate jewelry mount 400 may be coupled to the receiving section 110. The coupling of the decorative element 200 using the separate jewelry mount 400 is advantageously applicable when the decorative element 200 is one selected from among jewelry including diamonds, which has a high resistance to brittleness and a high hardness, and thus shows a difficulty in machining.

[32] Referring to FlG. 3 illustrating a first alternative example of the present invention, when the decorative element 200 is made of a material that can be easily machined for the formation of a coupling portion to be coupled to the receiving section 110, an end 111 of the receiving section 110 is formed with screw threads, and a corresponding coupling portion of the decorative element 200 is formed with a screw bore, for allowing the end 111 of the receiving section 110 to be screwed with the decorative element 200. Specifically, in the first alternative example of FlG. 3, the decorative element 200 may be formed with the screw bore at the center of a lower surface thereof, but is not limited thereto, and the position of the screw bore is freely changeable based on the position of the end 111 of the receiving section 110. Accordingly, in association with a second alternative example of the present invention as shown in FlG. 4, the screw bore may be formed at an outer circumference of the decorative element 200 within a range causing no deterioration in outer appearance.

[33] In the embodiment of FIGS. 1 to 4, a rotation radius of the helical wire gradually decreases from the receiving section 110 to the mounting section 120, such that the accessory 100 generally has a conical shape. When forming the accessory 100 with the conical helical wire, a variety of design requirements, which will be explained hereinafter, must be considered to prevent eccentric motion of the accessory 100 after being mounted to the nail, to keep a desired coupling force between the accessory and nail, to facilitate an accessory coupling procedure, and to eliminate a risk of restricting functions of the nail.

[34] FlG. 5 is a front view of the nail accessory 100 of FlG. 1. Referring to FlG. 5, a portion of the helical wire of the mounting section 120, which is received under the hole 302 of the nail 301, extends downward by a predetermined inclination angle θ relative to the rotary axis V. Preferably, the inclination angle θ is limited to have a value more than 30°, but less than 80°. If the inclination angle θ is smaller than 30°, a contact area between the hole 302 of the nail 301 and the wire decreases, making it difficult to obtain a desired coupling force between the accessory 100 and the nail 301. Furthermore, after being mounted to the nail 301, an end 121 of the mounting section 120, which protrudes downward from the nail 301, tends to come into direct contact with the skin of a user, and therefore, may cause pain on the user's skin. Conversely, if the inclination angle θ is larger than 80°, excessive tilting of the end 121 of the mounting section 120 is necessary to align the end 121 of the mounting section 120 with the hole 302. This results in difficulty in mounting operation. Also, it is impossible to allow a lower surface of the receiving section 110 to come into uniform contact with the upper surface of the nail 301 after being mounted thereto, and disad- vantageously, a problem in that the receiving section 100 comes into eccentric contact with the nail.

[35] To solve the above described problems, the inclination angle θ in the vicinity of the end 121 of the mounting section 120 is approximately close to 90°, more preferably, 80° to 90°, such that the end 121 of the mounting section 120 has a substantially horizontal shape. This horizontal configuration is advantageous to prevent the shaft end 121 from causing pain on the user's skin when the accessory 100 is mounted on the nail 301. If the inclination angle θ is smaller than 80°, it is impossible to achieve the above described pain prevention object. Also, if the inclination angle θ is larger than 90°, it is difficult to align the end 121 with the hole 302 during the mounting of the accessory 100.

[36] To solve the eccentricity of the accessory 100 after being mounted to the nail, in addition to the design requirement about the inclination θ, it is important to consider diameters of the wire and the hole 302, and a rotation radius ratio Rh/Rm between the receiving section 110 and the mounting section 120, which are located above and beneath the upper surface of the nail 301. In the following description, an angle between the rotary axis V of the accessory 100 and the vertical axis O of the nail 301 is defined and explained as an eccentric angleδ. [37] Generally, if the diameter of the hole 302 is larger than the diameter of the wire, the eccentric angle δ is smaller. Conversely, if the diameter of the hole 302 is substantially equal to the diameter of the wire, the eccentric angle δ is larger. As will be appreciated from the above description, it is advantageous that the diameter of the wire is smaller than the diameter of the hole 302. However, such a reduction in the diameter of the wire requires to control the diameters of both the wire and the hole 302, and therefore, is troublesome.

[38] Such trouble due to the control of diameters of both the wire and the hole 302 for the sake of prevention of eccentricity is able to be considerably eliminated by controlling the ratio of the rotation radius Rh of the receiving section 110, which is located above the upper surface of the nail 301, relative to the rotation radius Rm of the mounting section 120 located beneath the upper surface of the nail 301. That is, the greater the rotation radius ratio Rh/Rm, the longer is the length of an elastically deformable wire of the receiving section 110. This has the effect of dampening an eccentric force to be applied to the receiving section 110. Thereby, the accessory 100, more particularly, the receiving section 110 is able to be preferably mounted on the nail by a slight eccentric angleδ. The above described design is advantageously applicable to situations having a bad effect on eccentricity, such as for example, when the end of the mounting section 120 has a large inclination angle θ of approximately 80°, or the diameter of the wire is approximately the same as that of the hole 302.

[39] Preferably, the rotation radius ratio Rh/Rm must be at least more than 1.5 for the sake of prevention of eccentricity. An upper limit of the rotation radius ratio Rh/Rm is not limited, and the greater the rotation radius ratio Rh/Rm, it is suitable for the prevention of eccentricity. In this case, due to the fact that the rotation radius Rh of the receiving section 110 is limited by the size of the nail 301 to which the accessory 100 will be attached, it is necessary to reduce the rotation radius Rm of the mounting section 120 in order to achieve the greatest possible rotation radius ratio Rh/Rm. However, reducing the rotation radius Rm has a limit in association with the machining of the mounting section 120. For this reason, it is preferable that the value of the rotation radius ratio Rh/Rm is approximately 3.

[40] Basically, such a requirement for the greatest possible rotation radius ratio is able to be advantageously achieved when the helical wire has a conical shape as shown in FIGS. 1 to 4. With the conical shape, the rotation radius at the end of the mounting section 120 is naturally reduced, achieving an advantage in fixing operation in an extremely narrow space, for example, under the nail.

[41] Preferably, the end 121 of the mounting section 120 is tapered such that an outer diameter of the end 121 is smaller than an inner diameter of the hole 302 and the end 121 is converged toward the center of the rotary axis V. With the tapered shape, when the accessory 100 is mounted to the nail, the end 121 of the mounting section 120 is able to be easily aligned with the hole 302 that is artificially perforated through the nail 301. Also, the conical accessory 100 achieves a reduction in eccentric motion thereof relative to the rotary axis V or the hole 302 when it is attached to or detached from the nail via rotating motion. As a result, attachment and detachment operations of the accessory 100 can be more stably performed.

[42] The diameter (2 X Rh) of the wire that forms the receiving section 110 is determined based on the size of the decorative element 200 and the area of the nail 301. Conventionally, a diameter value of less than 5mm is sufficient. The height Hm of the mounting section 120 must be equal to or higher than the thickness of the nail 301 to which the mounting section 120 will be attached, in order to maintain a desired coupling force between the accessory 100 and the nail and to prevent unintentional separation of the accessory 100. However, if the height of the mounting section 120 has an immoderately high value, the mounting section 120 tends to excessively protrude downward from a lower surface of the nail 301 through the hole 302 of the nail 301 after being mounted on the nail 301. This is undesirable since it may restrict original operating functions of the nail 301. In view of the above description, the height of the mounting section 120 may be determined within a range of 0.5mm to 3mm. Preferably, the end of the mounting section 120 is designed to slightly protrude from the lower surface of the nail 301, such that upper and lower surfaces of the nail 301 can be more securely tightened with the elastic force of the wire.

[43] Referring to FlG. 5, in association with a pitch distance of the helical wire, the pitch distance Ph of the helical wire with respect to the receiving section 100, which forms an upper portion of the accessory 100, is small, and the pitch distance Rm of the helical wire with respect to the mounting section 120, which forms a lower portion of the accessory 100, is relatively large.

[44] Specifically, the pitch distance Ph in the receiving section 110 is smaller than the thickness of the nail 301 to which the accessory 100 will be attached. If the pitch d istance Ph in the receiving section 110 is larger than the thickness of the nail, the length of the mounting section 120, which penetrates the hole and is exposed to the outside from the lower surface of the nail, becomes relatively longer, resulting in restriction in operating functions of the nail. Also, the length of the receiving section 110 that is exposed to the outside from the upper surface of the nail becomes shorter in proportion to an increase in the length of the mounting section 120. This is undesirable since it makes it difficult for the decorative element 200 to be securely fixed in the receiving section 110.

[45] In consideration of the above description, it is preferable that the pitch distance Pm in the mounting section 120 be approximately equal to the thickness of the nail to which the accessory 100 will be attached. If the pitch distance Pm in the mounting section 120 is much larger than the thickness of the nail, it makes it impossible to maintain a desired coupling force. Accordingly, when the accessory 100 is mounted to the nail, it is impossible to prevent the accessory 100 from being eccentrically rotated and moved relative to the rotary axis V. Conversely, if the pitch distance Pm is much smaller than the thickness of the nail, it causes an increase of external force required for attachment and detachment operations, making it difficult to perform the attachment and detachment operations or resulting in unwanted damage to the surface of the nail.

[46] The material of the accessory 100 having the above described helical wire shape has no special limit, but metals having a high elasticity, gloss, and machinability are able to be advantageously applicable to the accessory 100. In particular, in order to achieve a desired coupling force when the accessory 100 is mounted to the nail, it is essential to use high-strength and high-elastic materials. In this case, a yield strength of the wire is at least more than a yield strength of the nail. If the yield strength of the wire is smaller than that of the nail, the accessory 100 may suffer from permanent plastic deformation of the mounting section 120 due to repetitive attachment and detachment operations. As a result, the pitch distance Pm becomes higher than an initial design value, making it impossible to achieve a desired coupling force.

[47] Now, a method for attaching and detaching the accessory to and from the nail in accordance with the present invention will be explained with reference to FIGS. 6 A to 6C.

[48] FIGS. 6 A to 6C illustrate sequential processes of the attachment/detachment method in accordance with the present invention. It should be understood that, although FlG. 6 exemplifies the conical nail accessory of FlG. 2, the attachment/ detachment method may be identically applied to other accessories, for example, a cylindrical nail accessory of FlG. 7.

[49] Referring first to FlG. 6A, it is assumed that an end of the nail 301, to which the accessory 100 will be attached, is extended from a finger 300 by a length sufficient to form the hole 302 thereat, and that the hole 302 has an appropriate diameter that is slightly larger than the diameter of the wire of the accessory 100, to receive the wire.

[50] After perforating the hole 302 in the nail 301, a user who wants to mount the accessory 100 on the nail of her one hand, grips the accessory 100 with the other hand, without the help of an assistant or using separate tools, to locate the end of the mounting section 120 under the hole 302 in a state wherein a lower surface of the finger 300 is appropriately supported.

[51] In this case, by virtue of the above described advantageous configurations in that: the end of the mounting section 120 is tapered to have a diameter smaller than that of the hole 302; the helical wire has a conical shape; and the end of the mounting section 120 has a most preferable inclination angle of approximately 60° relative to the rotary axis V, the accessory 100 is able to be easily aligned with the hole 302 of the nail.

[52] Referring next to FlG. 6B, the user grips the circumference of the receiving section

110 of the accessory 100 or pushes an upper end of the receiving section 110 with one hand without using separate tools, thereby allowing the end of the mounting section 120 to be pressed into the hole 302. After that, if a rotating force is applied to the accessory 100, the accessory 100 having the helical wire shape is able to be smoothly advanced while being guided by the hole 302. In this case, it will be noted that the pitch distance Pm in the mounting section 120 must be approximately the same as the thickness of the nail 301 in consideration of two contrary requirements of easiness in coupling operation and maintenance of a desired coupling force.

[53] If the accessory 100 does not advance into the hole 302 any further even if a great amount of rotating force is applied to an upper end of the accessory 100, the application of the rotating force is stopped. In this way, the accessory 100 is able to be securely mounted on the upper surface of the nail without showing eccentricity as shown in FlG. 6C. As stated above, controlling the rotation radius ratio between the receiving section and the mounting section to more than 1.5 is an important design condition that must be seriously considered for the sake of prevention of eccentricity. In this case, since the pitch distance Ph in the receiving section 110 is less than the thickness of the nail 300 to prevent the receiving section 110 from being advanced into the hole 302, the user is able to easily recognize the ending of the coupling operation.

[54] It will be easily appreciated that detachment of the accessory 100 from the nail is accomplished by performing the above described procedure in reverse, and a variety of decorative elements may be selected in accordance with the user's taste. Industrial Applicability

[55] As apparent from the above description, the present invention provides a nail accessory of a type using a newly improved attachment/detachment method, which is easy to attach to and detach from a nail, and can provide not only stable wearing feeling, but also a remarkable reduction in restriction of operating functions of the nail. These various advantageous effects can be accomplished based on the fact that a mounting section of the accessory is formed of a helical wire. Accordingly, although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

[56] For example, as shown in FlG. 7, the nail accessory 100 may have a cylindrical shape. In this case, although the problem of eccentricity may occur differently from the conical shape, the cylindrical shape provides an advantage in that only the pitch distance, rotation radius, and height with respect to the receiving section 110 and the mounting section 120, are necessary to be controlled, resulting in easy machining of the accessory 100. Also, as shown in FlG. 8, it will be appreciated that the receiving section 110 of the accessory 100 as shown in FIGS. 1 to 7 may be substituted by a conventional jewelry mount 400 and only the mounting section may be formed of a helical wire, so as to enable the installation of various shapes of jewelry. In this case, the jewelry mount 400 is formed with a hole for the insertion of the helical wire, so as to achieve connection between the jewelry mount 40 and the helical wire. A thickness of the helical wire and a diameter of the hole perforated in the nail can be controlled to have fine values. These modifications and substitutions can be clearly understood by those skilled in the art.

[57] Accordingly, the scope of the present invention should not be limited to the description of the embodiment, but defined by the accompanying claims and equivalents thereof.

Claims

[I] A nail accessory to be attached to and detached from a nail via a hole perforated through the nail, comprising: a receiving section configured to be exposed to the outside from an upper surface of the nail after being mounted on the nail and used to receive a decorative element therein; and a mounting section helically extending downward from the receiving section to be penetrated and fixed through the hole. [2] The nail accessory as set forth in claim 1, wherein both the receiving section and the mounting section are formed of a single helical wire. [3] The nail accessory as set forth in claim 2, wherein a part of the wire, forming the receiving section, comes into close contact with an outer circumference of the decorative element by use of an elastic force thereof, to fixedly maintain the decorative element. [4] The nail accessory as set forth in claim 2, wherein a part of the wire, forming the receiving section, uses a binder to fixedly maintain the decorative element by use of a binder. [5] The nail accessory as set forth in claim 2, wherein a part of the wire, forming the receiving section, is coupled to a separate jewelry mount to fixedly maintain the decorative element. [6] The nail accessory as set forth in claim 2, wherein a part of the wire, forming the receiving section, is screwed at an end thereof to the decorative element to fixedly maintain the decorative element. [7] The nail accessory as set forth in claim 2, wherein the helical wire has a conical shape such that a rotation radius thereof decreases downward toward an end of the mounting section about a rotary axis thereof. [8] The nail accessory as set forth in claim 2, wherein the helical wire of the mounting section has an inclination angle of 30° to 80° relative to a rotary axis of the helical wire. [9] The nail accessory as set forth in claim 2, wherein the helical wire at an end of the mounting section has an inclination angle of 80° to 90° relative to a rotary axis of the helical wire. [10] The nail accessory as set forth in claim 2, wherein a ratio of a rotation radius of the receiving section, which is located above an upper surface of the nail, relative to a rotation radius of the mounting section which is located beneath the upper surface of the nail, is more than 1.5.

[II] The nail accessory as set forth in claim 2, wherein an outer diameter of the wire forming an end of the mounting section is smaller than an inner diameter of the hole. [12] The nail accessory as set forth in claim 2, wherein a pitch distance of the helical wire with respect to the receiving section is smaller than a thickness of the nail to which the nail accessory will be attached. [13] The nail accessory as set forth in claim 2, wherein a pitch distance of the helical wire with respect to at least an upper portion of the mounting section received under the hole is approximately equal to a thickness of the nail to which the nail accessory will be attached. [14] The nail accessory as set forth in claim 2, wherein a yield strength of the helical wire is more than a yield strength of the nail to which the nail accessory will be attached. [15] The nail accessory as set forth in claim 1, wherein at least a part of the mounting section is exposed to the outside from a lower surface of the nail after the nail accessory is mounted to the nail. [16] The nail accessory as set forth in claim 2, wherein the helical wire has a cylindrical shape having a uniform rotation radius. [17] A method for mounting a nail accessory to a nail, the nail accessory including a receiving section to receive a decorative element therein or to be coupled to a separate jewelry mount and a mounting section helically extending downward from the receiving section to be fixed to the nail, the method comprising: forming a hole at a predetermined position of an end of the nail to which the nail accessory will be attached, the hole having a diameter corresponding to an outer diameter of a wire that forms the nail accessory; inserting an end of the mounting section into the hole to be aligned with the hole; and rotating an upper end of the receiving section to allow the mounting section to slide through the hole and be fixedly maintained under the hole. [18] The nail accessory as set forth in claim 17, wherein the nail accessory is one as set forth in any one of claims 1 to 16.