nail file

Abstract

To provide a nail file that improves stability and operability during filing work.SOLUTION: The nail file of the present invention is designed such that a constricted hourglass-shaped portion at a central part of a body can be held between the areas around the first and second joints of two fingers such as the index finger and middle finger, giving a feeling of holding the tool with the whole palm and making it easy to handle. The nail tip to be filed is covered by an arcuately curved, semicylindrical filing surface, which prevents the nail tip from easily slipping off the file. In the present invention, since the tip of the nail closely contacts the curved filing surface, the nail is less likely to slip off the file, and at the same time, a wide area of the nail can be filed, thereby shortening the filing time. Because the upper and lower surfaces respectively have filing surfaces of different coarseness, the filing can be performed with the single tool without needing to use separate tools for rough filing and finishing.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a file tool for filing nail incisions. [Background technology]

[0002] Nail files have traditionally come in two varieties: one that is built into nail clippers and the other that is just a nail file. A typical standalone nail file has a handle and a flat filing surface, and is generally shaped like a long, thin rod made up of two parts. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Jitsuzen Showa 56-111904 Public Relations Summary of the Invention [Problem to be solved by the invention]

[0004] However, because the abrasive surface of conventional nail files is flat, the contact area between the file surface and the curved toe is very small, and because the abrasive surface of the file is thin and narrow, the file often slips off the toe. Furthermore, because the contact point between the fingertips holding the handle and the abrasive surface of the file that touches the toe is several centimeters away, it is difficult to operate the file, and one must file carefully while constantly checking the position of the contact point between the toe and the abrasive surface of the file. Thus, nail file-filing also requires personal dexterity, and it is quite difficult to file smoothly. [Means for solving the problem]

[0005] This invention is a nail file in which the two upper and lower surfaces of a rectangular parallelepiped are recessed inward to form curved polishing surfaces, and the central part of the body of the rectangular parallelepiped is constricted in an hourglass shape, with the constricted part held between two fingers. The upper and lower polishing surfaces each have two different file surfaces with different grit sizes, allowing for finishing touches. The constricted part of the body is held between the fingers, and the concave, semi-cylindrical curved surface covers the nail tips, making them less likely to slip off the file. While polishing is typically performed by moving the file from side to side, this version eliminates the need to move the entire arm; polishing can be achieved by moving only the wrist from side to side. This eliminates the need to use the entire arm from the shoulder down to file as in the past, simplifying the filing motion and greatly facilitating the filing operation. Furthermore, because there is no need to exert force on the fingertips holding the handle or to focus closely on the fingertips being filed, the file is easy to use for people with limited dexterity, the visually impaired, and the elderly. [Effects of the Invention]

[0006] Conventional long, thin files tend to slip off the nail while sharpening, requiring constant attention to the fingertips. However, the inwardly curved abrasive surface of the present invention ensures that the toes are covered while sharpening, making the nail less likely to slip off the file. The contact area between the nail and the file is also increased, making sharpening easier. Furthermore, the hourglass-shaped waist of the body is held between two fingers, eliminating the need to exert strong force on the hand and fingers holding the file, as with conventional long, thin files. While conventional filing required the entire arm from the shoulder down, the present invention allows sharpening to be performed primarily by moving the wrist. This eliminates the need to focus on the toes being filed, and the angle and pressure of the file can be easily adjusted, improving the stability and operability of the sharpening process. This nail file eliminates the tension required to prevent the file from slipping off the fingertips, while also being easy to use for people with poor dexterity, the visually impaired, and the elderly. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a front view of the present invention. [Figure 2] FIG. 1 is a side view of the present invention. [Figure 3] FIG. 1 is a plan view of the present invention. [Figure 4] FIG. 1 is a perspective view of the present invention. [Figure 5] 1 is a diagram illustrating an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present invention will be described.

[0009] Figure 1 is a front view of the present invention, with both the top and bottom 1 being polishing surfaces. There are two polishing surfaces, but the coarseness of each is different, providing two types of polishing surfaces. For example, the index finger and middle finger are used for the constriction of 2, and the hourglass-shaped constriction of 3 is pinched between the two fingers. Any fingers can be used as long as they pinch 3. By reversing the top and bottom, two types of polishing can be performed: coarse and fine.

[0010] FIG. 2 is a side view of the present invention from both the left and right sides.

[0011] Figure 3 is a plan view of the present invention, which is the same when viewed from above or below.

[0012] FIG. 4 is a perspective view of the present invention. 1 shows the upper and lower polishing surfaces. The polishing surfaces can be grid-type or etched, and by changing the roughness of the upper and lower polishing surfaces, it is possible to perform finishing. Also, by dividing each polishing surface into two, it is possible to set four different roughness levels. 2 is an hourglass-shaped constriction that holds the present invention.

[0013] Figure 5 is a diagram of an embodiment of the present invention. This diagram shows the state when holding the tool in the right hand and polishing the fingers of the left hand. In this case, assuming that the right hand is the dominant hand, the fingers of the left hand are polished by moving the right hand left and right. On the other hand, even if the dominant hand is left-handed, the operation of the tool is the same, and the fingers of the right hand can be polished by moving the left hand holding the tool left and right. Another feature of this invention is that the polishing work can be done with simple movements without having to consider the difference in dominant hand.

[0014] In addition, while the upper and lower semi-cylindrical recesses in Figure 5 are in the same direction, it is also possible to twist the upper and lower grinding surfaces 90 degrees so that they intersect to form a cross shape. Also, while the cross section of the constricted part in the center of the body is circular, it can also be oval. The grinding surface can also be rotated by pinching this constricted part between the fingers, allowing the angle of the grinding surface and the position of the nails to be adjusted, allowing users to reuse the file freely.

[0015] The present invention is a nail polishing tool that is lightweight and only a few centimeters long, wide, and deep so that it can be held and operated with one hand. As shown in Figure 5, the tool is used by pinching the hourglass-shaped narrow part in the center of the body with two fingers, but there is no restriction on how the tool is held; it can be held by two fingers at the narrow part, or by three fingers including the thumb, and the method of use is left to the user's discretion.

[0016] The polishing operation is performed by moving the semi-cylindrical depression of the main body held between the fingers from side to side so that it fits over the nail, and basically the hand holding the main body is the one that moves primarily, but the fingers being polished also move from time to time depending on the sanding situation, so the polishing hand and fingers and the hand and fingers being polished move in tandem, and the polishing operation is performed in a way that is easy for the user to use, taking into account differences in dominant hands and other factors.

[0017] Furthermore, if the strength of the abrasive surface is increased, it is possible to go beyond simply polishing the toes of the nails and even file them. Depending on the usage situation, it is also possible to maintain the condition of the toes according to personal preference by filing frequently without cutting the nails. [Explanation of symbols]

[0018] 1 Polished surface 2. The waistline pinched between two fingers 3. Instrument body

Claims

1. This nail file has a rectangular body with a narrow hourglass-shaped tapered section in the middle, which is held between the index and middle fingers. Both the top and bottom surfaces are concave and curved like a semi-cylindrical shape, and the curved surfaces are the abrasive surfaces.

2. The nail file according to claim 1, wherein the polishing surfaces are each recessed in a semi-cylindrical shape on the inside of each of the upper and lower surfaces, and the polishing surfaces are made of metal in a grid line or etching form, and the roughness of the polishing surfaces is different on each of the upper and lower surfaces, providing two types of polishing surfaces.

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