WO2011161842A1

WO2011161842A1 - Nail file and method for manufacturing same

Info

Publication number: WO2011161842A1
Application number: PCT/JP2010/070495
Authority: WO
Inventors: 良雄坂井
Original assignee: 株式会社三信精機
Priority date: 2010-06-24
Filing date: 2010-11-17
Publication date: 2011-12-29
Also published as: JPWO2011161842A1

Abstract

A nail file which can be easily used even by vision-impaired persons and finger-impaired persons. A nail file (1) comprises a plate member (2) which is the base member having a shape with an edge; a groove (3) provided along the edge (2a) of the plate member (2); and a file section (4) provided in the groove (3). The file section (4) is an assembly of holes (5) formed along the entire length of the groove (3) so as to penetrate through the plate member (2) from the bottom of the groove (3) to the rear face of the plate member (2). The edges of the holes (5) are not chamfered and serve as the file. In the nail file (1), the groove (3) is formed along the edge (2a) of the plate member (2), which is the base member having a shape with an edge, and the file section (4) is provided in the groove (3). As a result of the configuration, when filing the edge of a nail by the file section (4), the groove (3) serves as the guide for the nail and, in addition, the edge (2a) of the plate member (2) serves as the guide for the finger tip portion located below the nail.

Description

Claw file and method for producing the same

The present invention relates to a nail file for polishing an end face of a nail and a method for manufacturing the nail file.

There are various types of nail files. For example, in Patent Document 1, when a nail file is configured by providing nail file members on the upper and lower surfaces of a flat cube-shaped substrate, the cube-shaped substrate has the front and rear surfaces and the left and right side surfaces inward in the vertical direction. There is disclosed a nail file which is curved and whose upper and lower surfaces are curved inward in the left-right direction and which becomes wider toward the center.

Patent Document 2 discloses a nail polisher in which a groove is formed in the main body, a polishing surface for polishing the nail is provided in the groove, and the tip of the nail is inserted into the groove for polishing. Yes.

JP-A-8-299051 JP2004-242759

However, the nail file and nail polish described above have the following problems.

The nail file disclosed in Patent Document 1 is difficult to use for a visually impaired person or a person with a fingertip difficulty because there is no guide portion when polishing the end face of the nail.

On the other hand, in the nail polish disclosed in Patent Document 2, although the groove serves as a guide, the groove only guides the nail itself, so the nail must be accurately inserted into the groove as a premise. And must be accurately slid along the groove so that the nail does not come out of the groove. This action is easy for healthy people, but it is also difficult for people with visual impairments and those with limited fingertips. In Patent Document 2, a plane other than the groove is also a file, and it is not considered that a portion other than the groove functions as a guide.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a nail file that is easy to use for visually handicapped persons and persons with reduced fingertips.

In order to achieve the above object, the nail file of the present invention has a base material having an edge, a groove provided along the edge of the base material, and a file portion provided in the groove. .

Here, the base material may be a plate material.

Further, the file portion may be a hole drilled in the groove.

The holes may be arranged in series in the groove.

The groove may be a round groove.

The holes may have a mortar shape in cross section, and the holes may overlap in plan view.

In order to achieve the above object, in the nail file manufacturing method of the present invention, a circular groove is provided along the edge of the plate material, and holes are formed in series along the center line of the circular groove. Make a file.

In order to achieve the above object, in another nail file manufacturing method of the present invention, a nail file is formed by drilling a mortar-shaped hole in series so as to overlap each other along the edge of the plate material. To manufacture.

According to the present invention, the groove is provided along the edge of the substrate having the edge shape, and the file portion is provided in the groove. Therefore, when the end portion of the nail is polished by the file portion, The groove not only serves as a guide for the nail, but the edge of the base functions as a guide for the lower side of the nail in the fingertip portion. The two guides, the groove for the nail and the edge of the base for the fingertip, make it easier to swing the nail along the groove even when the force is weak and the fingertip shakes. Furthermore, since it is easy for a visually handicapped person to find the edge of the base, it is possible to easily insert a nail into the groove. Therefore, even if it is a visually impaired person or a person with a fingertip problem, the end face of the nail can be easily polished.

When the base material is a plate material, it becomes easy to process and can create nail files of various shapes, improve portability, and can be put in a wallet or carried as a key holder.

When the file part is a hole drilled in the groove, it is not necessary to deposit diamond in the groove or to provide a lattice-shaped fine groove, and it is easy to drill the hole with a drill. A file part can be provided only by work.

If the holes are lined up in series in the groove, the hole can be drilled using the groove as a guide.

When the groove is a round groove, the claw is guided to the center of the round groove due to the inclination of the groove, so that the movement of the nail can be prevented.

By providing a round groove along the edge of the plate, and arranging and drilling holes in series along the center line of this round groove, it is possible to easily make serial holes using the round groove as a guide. A nail file that can easily polish the end face of a nail can be obtained even for a visually impaired person or a person with a fingertip problem.

When the hole has a mortar shape in cross section and the holes overlap in plan view, the boundary between the holes forms a corner, so that the filed portion can be constituted by a continuous corner. .

It is a top view which shows embodiment of the nail | claw file of this invention. FIG. 2 is a perspective view showing the state of FIG. FIG. 2 is a front view showing a part of the state of FIG. FIG. 2 is a side view showing a part of the state of FIG. It is a top view which shows 2nd embodiment of the nail | claw file of this invention. It is a top view which shows 3rd embodiment of the nail | claw file of this invention. (A) is a top view which shows 4th embodiment of the nail | claw file of this invention, (b) is the partially expanded view. 7A is a cross-sectional view of the 図 A-A portion, and FIG. 7B is a cross-sectional view of the BB portion.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view showing an embodiment of a nail file of the present invention. As shown in FIG. 1, the claw file 1 is provided with a plate material 2 which is a base material with a rim, a groove 3 provided along the edge 2a of the plate material 2, and a groove 3 provided in the groove 3. And a file portion 4.

Plate material 2 is made of stainless steel with a thickness of about 0.8 mm, and is a card of a general credit card size of 86 mm × 54 mm. The end face is formed with rounded corners so as not to cut the hand.

The groove 3 is a groove provided along the edge 2a with an interval of about 0.5 mm from the edge 2a of the plate member 2, that is, in parallel with the edge 2a, a width of about 1.5 mm, a depth of about 0.6 mm, It is a round groove with a length of about 70mm.

The file part 4 is a set of holes 5 drilled so as to penetrate from the bottom of the groove 3 to the back side of the plate 2 over the entire length of the groove 3, and the diameter is about 1.4 mm, and the interval between the holes 5 is about 0.3 mm. It is. The edge of the hole 5 is not chamfered, and the edge of the hole 5 functions as a file.

Next, a method for manufacturing such a nail file 1 will be described.

First, a stainless steel plate is cut into a card size of 86 mm x 54 mm to form rounded corners. Subsequently, the drill is oscillated along the edge 2a of the plate member 2 to provide the round groove 3. Next, the file portion 4 is formed by drilling the holes 5 in series along the center line of the circular groove 3 with a drill. The nail file 1 is thus completed.

Thus, the nail file 1 can be manufactured only from a stainless steel plate material, and is manufactured only by a simple operation of forming a groove along the edge and drilling a hole along the center line of the groove. Can be produced at low cost. Further, since the plate material can be freely sized and shaped, it is possible not only to form a credit card but also to have a curved edge or a key holder.

Next, how to use the nail file 1 will be described. First, the nail file 1 is held in one hand, and the finger f of the other hand is applied to the edge 2 a of the nail file 1. As it is, the claw f1 is inserted into the groove 3 so that the width direction of the claw f1 is parallel to the length direction of the groove 3. Since the groove 3 is located at a position about 0.5 mm from the edge 2a, the nail f1 can be normally inserted into the groove 3 with the fingertip applied to the edge 2a. More specifically, in the case of a general nail length, when the nail f is inserted into the groove 3 so that the edge 2a is positioned in the gap between the nail f and the fingertip, the nail f is just positioned in the groove 3.

In this state, the claw is brought into contact with the file portion 4 in the groove 3 and the claw is swung along the groove 3. That is, the finger f is swung in the width direction. Then, the claw f is scraped by the edge of the hole 5. This shavings passes through the hole 5 and comes out to the opposite side of the claw file 1. By making the finger stand vertically with respect to the plate surface of the plate member 2 as the nail becomes shorter, the nail can be polished while always using both guides of the groove 3 and the edge 2a.

Thus, according to the nail file 1, the groove 3 is provided along the edge 2a of the plate 2 that is a base material having an edge, and the file portion 4 is provided in the groove 3. When polishing the end of the nail with the file part 4, not only the groove 3 serves as a guide for the nail, but also the edge 2a of the plate 2 functions as a guide for the fingertip part below the nail. The guide makes it easy to swing the nail along the groove even when the force is weak and the fingertip shakes. In addition, it is easier for visually impaired people to find the edge of the base than it is to find the groove by hand, so it is easy to insert a nail into the groove simply by touching the edge of the base. . Therefore, even if it is a visually impaired person or a person with a fingertip problem, the end face of the nail can be easily polished. In addition, since the file portion is inside the groove 3 and is not exposed on the surface of the plate member 2, even when the nail file 1 is carried, the file portion 4 does not damage the human body or other cards. .

FIG. 5 is a plan view showing a second embodiment of the nail file of the present invention. The nail file 21 is a base material having an edge shape and a long side length of about 5 cm, a groove 23 provided along an edge 22a of the plate material 22, and a groove 23 It is a key chain type having a file portion 24 provided. The main difference between the nail file 21 and the nail file 1 is that the edge 22a is not a straight line but an arc. This circular arc is a curve in which the contour of the plate material 22 enters toward the center of the plate surface, and draws a curve that matches the curve of the nail when the fingertip is applied to the edge 22a. The file portion is provided with a hole (not shown) similar to that of the first embodiment. Since the file portion 24 is provided in the groove 23, the file portion 24 does not damage the human body or other key holders. Further, since the edge 22a has an arc shape and the groove 23 is provided along the arc, the nail can be smoothly cut by sliding the fingertip using the edge 22a and the groove 23 as a guide. Further, the nail file 21 can be used as a key holder by passing a string or chain through the hole 25.

FIG. 6 is a plan view showing a third embodiment of the nail file of the present invention. The nail file 31 is a base material having an edge shape and has a plate material 32 having a long side length of about 7 cm, a groove 33 provided along the edge 32a of the plate material 32, and a groove 33 It is a card type having a file portion 34 provided. The main difference between the nail file 31 and the nail file 1 is that the edge 32a is not a straight line but an arc. This arc is a curve in which the outline of the plate 32 enters the center of the plate surface, and draws a curve that matches the curve of the nail when the fingertip is applied to the edge 32a. The file part is provided with the same hole (not shown) as in the first embodiment to constitute the file part 34. Since the file portion 34 is provided in the groove 33, the file portion 34 does not damage the human body or other cards. Further, since the edge 32a has an arc shape and the groove 33 is provided along the arc, the nail can be smoothly cut by sliding the fingertip using the edge 32a and the groove 33 as a guide. Furthermore, since the nail file 31 is card size, it can be carried in a wallet.

FIG. 7 is a plan view showing the fourth embodiment of the nail file of the present invention, FIG. 7 (a) is an overall view, and FIG. 7 (b) is an enlarged view of the file portion 44. FIG. The claw file 41 includes a plate member 42 that is a base material having an edge shape, a groove 43 provided along the edge 42a of the plate member 42, and a file portion 44 provided in the groove 43. The main difference between the nail file 41 and the nail file 1 is that the hole 45 formed in the bottom of the groove 43 over the entire length of the groove 43 in the file portion 44 does not penetrate the back side of the plate material 2 and is about 80% of the plate thickness. It is a point that remains at the depth of. Moreover, the hole 45 is not a columnar shape but a mortar shape. Here, the mortar shape means a shape in which a wall portion in a sectional view draws an outwardly convex curve, is circular or elliptical in a plan view, and includes a hemispherical shape and a bowl shape.

The diameter of the hole 45 is about 1.4 mm, and the interval between the center points of the hole 45 is about 1.0 mm. Therefore, the holes 45 overlap each other by about 0.4 mm. Therefore, a straight corner 45a is formed at the boundary between the holes 45 in plan view.

FIG. 8 (a) and FIG. 8 (b) show cross sections of the corner 45a taken along the lines AA and BB in FIG. As shown in FIG. 8A, in the side view of the groove 43, the corner 45 is a sharp corner formed at the intersection of two arcs. The closer to the hole diameter, the smaller the overlapping range, the sharper the corner 45a becomes, and the smaller the hole center points, the larger the overlapping range. The corner 45a becomes an obtuse angle.

Further, as shown in FIG. 8 (b), the corner 45 is arcuate in the longitudinal direction of the groove 43. Since this arc is obtained by overlapping two mortar-shaped parts, the radius of the arc increases as the distance between the center points of the holes approaches the diameter of the hole, that is, the overlapping range decreases, and the center point of the hole The radius of the arc decreases as the distance between them decreases and the overlapping range increases.

Since the file portion 44 is provided in the groove 43, the file portion 44 does not damage the human body or other key holders. Further, since the edge 42a has an arc shape and the groove 23 is provided along the arc 42a, the fingernail can be slid smoothly by sliding the fingertip using the edge 42a and the groove 43 as a guide.

Further, the portion functioning as a file is a corner portion 45, and as shown in FIG. 8 (b), the corner portion 45 always has an arc shape that enters the inside of the plate thickness. Even in the case where only the holes are continuously overlapped with each other, they are included in the present invention and the effect can be obtained. In this case, a set of holes 45 provided continuously in an overlapping manner functions as a groove, that is, a guide for the claw, and a corner portion 45 functions as a file portion. Even in this case, the file portion has an arc shape that enters the inside of the plate thickness and is provided in the groove, so that the file portion does not damage a human body or the like. Further, even if the bottom portion of the mortar-shaped hole 45 penetrates the plate material 42, it is included in the present invention as long as the corner portion 45 is provided within the plate thickness of the plate material 42, and the effect can be obtained. In this case, a nail file can be produced by arranging and drilling mortar-shaped holes side by side so as to overlap each other in series along the edge of the plate material without separately providing a groove portion. It is.

The present invention can be implemented in various forms without departing from the spirit of the present invention. For example, the above-described and illustrated nail file dimensions, file density, and number are examples, and various design changes are made in accordance with the assumed user's hand size, nail length, hardness, and the like. be able to. In the first embodiment, a filed portion is provided on the edge on the back side and the edge on the near side, and the sizes of the grooves and the holes are made different to be used for roughing and finishing. Of course, the nail file can be modified to accommodate the toenails. Furthermore, the groove and the file portion may be provided on both sides of the plate material, the file portion may be provided on the other edge, or a box is installed on the side opposite to the groove of the plate material so as to collect shavings. Also good. Furthermore, the base material does not have to be a plate material, and may be a member having an edge such as a square material. As for the file portion, besides forming a hole, the file portion may be formed by a known method such as vapor deposition of diamond in the groove or fine mesh processing.

As described above, the nail file of the present invention has an edge-shaped base material, a groove provided along the edge of the base material, and a file portion provided in the groove. Therefore, it is possible to provide a nail file that can be easily used by a visually impaired person or a person with a fingertip difficulty by simple processing.

1 Nail file 2 Plate 2a Edge 3 Groove 4 File 5 Hole f Finger f1 Nail

Claims

An edged substrate,
A groove provided along an edge of the substrate;
A file part provided in the groove,
Nail file.
2. The nail file according to claim 1, wherein the base material is a plate material.
3. The nail file according to claim 1 or 2, wherein the file portion is a hole formed in the groove.
4. The nail file according to claim 3, wherein the holes are arranged in series in the groove.
The nail file according to any one of claims 1 to 4, wherein the groove is a round groove.
6. The nail file according to claim 1, wherein the hole has a mortar shape in cross section, and the holes overlap in a plan view.
A method for producing a nail file, comprising producing a nail file by providing a round groove along the edge of the saddle plate material and forming a hole in series along the center line of the round groove.
A method for producing a nail file, wherein a nail file is produced by drilling a mortar-shaped hole in series so as to overlap each other along an edge of a slab.