KR100674475B1 - The manufacturing method for arc type nail clipper blade, and its nail clipper blade and its nail clipper - Google Patents

Abstract

An arc-shaped nail clipper blade and a method of manufacturing the same are provided to harmonize upper and lower blades by forming a concave surface of the upper blade and a convex blade of the lower blade. The nail clipper blade body consists of an upper blade body(11) and a lower blade body(21) each having the same inclined angle to vertically contact with each other at an end portion thereof. An inner portion of a downwardly inclined surface of the upper blade body expands from a concavely inclined surface(52) of a constant curvature. An inner portion of an upwardly inclined surface of the lower blade body expands from a convexly inclined surface(51) of the same curvature as that of the upper blade body. The upper blade body is formed in a concave blade(53). The lower blade body is formed in a convex blade(54).

Description

The manufacturing method for Arc type Nail clipper blade, and its nail clipper blade and its Nail clipper}

The following drawings, which are attached hereto, illustrate the preferred embodiments of the present invention, and the present invention should not be construed as limited to the details set forth in such drawings.

Figure 1a is a perspective view of the arc nail clipper of an embodiment of the present invention, Figure 1b is a front view of the nail clipper blade shown in Figure 1a.

Figure 2a is a perspective view of an arc nail clipper of another embodiment of the present invention, Figure 2b is a front view of the nail clipper blade shown in Figure 2a.

3 is a principle diagram of the arc nail clipper blade of the present invention.

4 is an explanatory view of the arc nail clipper blade of the present invention.

Figure 5a is a partially cut perspective view showing the inner inclined surface of the upper blade of the present invention, Figure 5b is a partially cut perspective view showing the inner inclined surface of the lower blade of the present invention.

Figure 6a shows the cutting of the end of the upper blade of the present invention with respect to the vertical one plane, showing a cutting plane in contact with the vertical one plane from the front, Figure 6b is to cut the end of the lower blade with respect to the vertical one plane It shows the cutting plane that is in contact with the vertical one plane from the front.

FIG. 7A is a partially cutaway perspective view of an edge of the inclined surface of the upper blade of the present invention showing the cutting edge from the inside, and FIG. 7B is a partially cut perspective view of an edge of the inclined surface of the lower blade of the blade.

Figure 8 shows the arc-shaped blade to match the upper and lower by engaging the upper and lower blades of the present invention and simultaneously polished in a vertical one plane.

<Explanation of symbols for main parts of drawing>

10: nail clippers

11: upper blade

21: lower blade

51: convex slope

52: concave inclined surface

53: concave arc blade

54: convex arc blade

55: outer convex surface

56: outer concave surface

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to nail clippers, and more particularly, to a method of manufacturing an arc nail clipper blade that conforms to a curved surface of a nail, and to a nail clipper blade and a nail clipper thereby.

Arc-type nail clipper, when viewed from the front of the blade, the shape of the blade is arc-shaped, when the nail is cut almost close to the curved surface of the nail to remove the phenomenon that it is not good to cut the nails by the force first, or the nail is broken This type of blade is considered to be very critical for practical use. Until now, many patents have been filed for more than 30 years. However, it is still an ideal idea and commercialized or commercialized due to actual manufacturing problems. There was no.

As a prior art of the arc nail clipper which concerns on this invention, Japanese dog small 49-8181 (1974.1.24), Japanese dog small 49-120419 (1974.10.16), Japanese dog small 52-66577 (1977.5.17) Japanese dog small 51 -119970 (1977.9.12) Japanese Patent Application No. 54-98369 (1979.7.11) Japanese Patent Application Publication 54-116468 (August 1, 1979) Japanese Patent Application Publication 2005-74135 (2005. 3.24), Japanese Patent Application Publication No. 01-145305, US Design Patent Des. A number of patents have been filed, including 371,636.

In addition to the examples of the prior art, the same ideas are numerous, but most of them only want the upper and lower edges to contact the curved surface. In the prior art investigation, there was no information on how this could be achieved in manufacturing technology. That is, no technical details have been described in detail how the upper, lower, and lower blade ends of the nail clipper blade are precisely engaged in an arc shape in a three-dimensional space.

American Design Patent Des. No. 371,636 also allows the upper and lower edges of the nail clipper to be inclined in the three-dimensional space to correspond to the curved surface of the nail, which is possible only in design and overlooks the challenges to be overcome in manufacturing technology.

This is why most prior art products have not been commercially available so far. However, Japanese Patent Laid-Open No. 2005-74135 further understands manufacturing difficulties, and its purpose of use is the same, but the upper and lower blades have different structures. However, since the upper and lower blades must be separately polished, manufacturing costs are high, and the use of the lower blades can not be as close to the base of the nail as the thickness of the lower blade.

The general nail clipper is formed to be inclined to extend from the upper and lower blades to meet the upper and lower blades, but has a slightly concave surface in appearance, and simultaneously polishes the upper and lower blades by using a polishing roller having a diameter corresponding to the curved surface. Stand up. At this time, when the diameter of the curved edge of the blade and the diameter of the polishing roller is the same, it is common that the upper and lower blades are horizontally parallel when viewed from the front of the blade.

When looking at the front of the blade, if you want to form an arc blade, the upper blade is concave arc shape in the middle, and the lower blade is convex arc shape in the middle, so the upper and lower meshing lines must be precisely matched to keep the nails clean. Can be cut, but depending on the shape of the blade extending obliquely from the upper blade, according to the shape of the blade extending obliquely from the lower blade, according to the diameter of the polishing roller, depending on the precision of the processing machine, to the degree of polishing depth Therefore, it is very difficult to match the arc-shaped surfaces of the upper and lower blades. These various variables result in gaps between the upper and lower blades in a direction that is difficult to predict, resulting in unusable products.

Many prior patents claim patents referring only to the technology of the rough shape and usefulness of the nail clipper of the arc-shaped blade, but this is only an idea and has not been put to practical use since there is no specific implementation method.

The most important basic condition in the manufacture of arc type upper and lower blades of nail clippers is that the upper and lower blades are simultaneously polished by simultaneously grinding the upper and lower blades while allowing sufficient variation in the grinding depth of the upper and lower blades. You have to form a blade.

Polishing of the nail clipper blades is divided into manual, semi-automatic and fully automatic, and is generally performed using a polishing roller that matches the diameter of the edge of the blade. Manual results vary greatly depending on the skill of the operator, and semi-automatic and automatic results in various variations depending on the deviation of the nail clipper fixing mechanism, the transfer mechanism, and the degree of wear of the polishing belt.

In particular, in the case of an arc-type blade of a three-dimensional nail clipper, even if the upper and lower blades can be matched in any one space in three dimensions, it is almost impossible to manufacture a nail clipper with the upper and lower blades coincident with the above conditions. . Of course, it may be possible to make a small amount for a hand product or a purpose, but manufacturing a large amount uniformly is not a theoretical and technical basis, and thus has not been able to see commercially available commercial products.

Therefore, in order to solve the above-mentioned problems of the prior art, the present invention allows arc-shaped blades to be interlocked in two dimensions so that a deviation to the polishing depth which is the basic condition described above (deviation is approximately ± 0.2 of the reference value). It is to provide a method of manufacturing an arc nail clipper blade and a nail clipper blade and nail clipper by this can be exactly matched when the upper and lower blades are meshed under the conditions of simultaneously grinding the upper and lower blades.

Accordingly, the present invention provides a nail clipper with a nail clipper blade and a support shaft penetrating a support shaft hole formed in the blade, wherein one end of the upper blade and the lower blade constituting the nail clipper meet each other at the same time. The inner side of the downward inclined surface of the upper blade is formed to be inclined with an inclination angle, and a concave arc of constant curvature extends along the inclined surface, and an end portion of the lower blade is formed in a vertical plane, and the inner side of the upper inclined surface of the lower blade has an upper side. If the convex arc with the same curvature extends along the inclined plane and forms the end where the blade is to be formed in the vertical one plane, abuts the upper and lower blades and polishes the vertical one plane at the same time, the upper blade is a concave arc blade, the lower blade. Arc nail clippers with convex arc blades and precisely matched upper and lower blade curves. It is characterized by the configuration.

In another aspect, the present invention is a nail clipper body having a support shaft hole formed on one side, a nail hanger blade having a support shaft hole and composed of an upper blade and a lower blade, and is located on the top of the nail clipper body and connected through a blade and a body via a support shaft. In the nail clipper including a lever to act, one end of the upper blade and the lower blade constituting the nail clipper is inclined with the same inclination angle so that the upper, lower meet each other, the inner side of the downward slope of the upper blade is a constant curvature The concave arc of which extends along the inclined plane and forms an end on which the blade is to be formed in a vertical plane, and the inner side of the upwardly inclined plane of the lower blade extends along the inclined plane and has a convex arc having the same curvature as the upper side. To form a vertical one plane, abutting the upper and lower blades at the same time When the upper nalche is increasingly concave arc-shaped, the lower nalche is characterized by constituting a convex arc type nail clipper of the arc-shaped edge is formed on a fine move match the curve of the upper and lower edge.

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

Figure 1a is a perspective view of an arc nail clipper is an embodiment of the present invention, Figure 1b is a front view of the nail clipper blade shown in Figure 1a, Figure 2a is a perspective view of an arc nail clipper another embodiment of the present invention, Figure 2b shows a front view of the nail clipper blade shown in Figure 2a.

In the nail clipper 100 shown as an example in FIG. 1A, a lever 120 is formed through a nail clipper blade 10 and a support shaft 110 penetrating through a support shaft hole 31 formed in the blade 10. It is configured.

The nail clipper 200 shown in another embodiment of FIG. 2A has a nail clipper body 210 having a support shaft hole 211 formed at one side thereof, and a support shaft hole 31 having an upper blade 11 and a lower blade 21. The nail clipper blade 10 and the nail clipper body 210 which are positioned on the top of the nail clipper body 210 and are connected through the blade 10 and the body 210 via the support shaft 220 to leverage the lever 230 are formed. The nail clipper blade 10 is configured to be rotated 360 degrees in the body 210 about the support shaft 220.

In the above, the nail clipper blade 10 illustrated in FIG. 1A is composed of the upper blade 11 and the lower blade 21 and is configured by fixing means such as spot welding, and the nail clipper blade 10 illustrated in FIG. 2A. Is an example of integrally formed by bending one side of the upper blade 11 and the lower blade 21.

That is, the upper and lower blades of the nail clipper blade 10 illustrated in FIG. 1A are each manufactured by a press process, and then integrated with spot welding. In the case of the nail clipper blade 10 shown in FIG. 2A, the upper blade and the lower blade are shown. The blade consists of one by bending in the pressing process, the present invention in the embodiments of the two types of nail clipper blades can be implemented in the same technology of forming the arc-shaped blade nail clipper blade to be described with reference to the drawings in the future The reference numerals of all will be described by the same reference numeral 10.

The nail clipper blade 10 is composed of an upper blade 11 and a lower blade 21. One end of the upper and lower blades (11, 21) is formed to be inclined with the same inclination angle so that the upper and lower meet each other.

The inner side of the downwardly inclined surface of the upper blade 11 forms an end portion in which a concave arc of constant curvature extends along the inclined surface 52 and the edge 53 is to be formed in a vertical one plane, and the upwardly inclined surface of the lower blade 21. The inner side of the convex arc having the same curvature as the upper side extends along the inclined surface 51 and forms an end portion on which the blade 54 is to be formed in a vertical plane so that the upper and lower blades 53 and 54 abut. At the same time, when grinding to a vertical plane, the upper blade 11 is a concave arc-shaped blade 53, the lower blade 21 is an arc shape in which a convex arc-shaped blade 54 is formed and the curves of the upper and lower blades are precisely matched. Nail clipper 100 or 200 is formed.

Figure 3 shows the principle that the arc nail clipper blade of the present invention can be formed. As a part of the cylinder, two (A1, A2) having the same diameter (R1, R2) are erected and symmetrical with respect to the blade center intersection point (P), one of which rotates a certain angle (a˚) to the left and the other Rotate symmetrically to the right (a'˚), cut to the vertical one plane (VP) with respect to the blade center intersection point (P), and remove the cut off on the left side. In convex arcs are formed, and arcs that coincide with each other are formed. In this case, the upper cylinder refers to the concave inclined surface 52, which is an inner side of the upper blade 11, and the lower cylinder refers to the convex inclined surface 51, which is an inner side of the lower blade 21.

Figure 4 shows an explanatory view for forming the arc-shaped blade of the nail clipper blade of the present invention, the portion shown by A is a side view of the nail clipper blade, B is a convex inclined surface 51 which is the inner surface of the lower blade 21. C shows a concave inclined surface 52 which is an inner surface of the upper blade 11, D shows a front view of A, and E and F shows a plan view and a bottom view of A.

As shown in FIGS. 4 to 5B, the convex surface 55 is formed along the slope to the outside of the front end of the upper blade 11, and the concave inclined surface 52 is formed to the inside of the lower blade 21. The concave surface 56 is formed along the inclined side to the outer side of the tip, and the convex inclined surface 51 is formed on the inner side. Thus, the convex inclined surface 51 forming the lower blade and the concave inclined surface 52 forming the upper blade are composed of diameters R1 and R2 of the cylindrical curved surface, wherein the diameters R1 and R2 of the cylindrical curved surface must match. As shown in part D of FIG. 4, the upper concave arc blade 53 and the lower convex arc blade 54 are formed to be engaged.

5A shows that the concave inclined surface 52 of the upper blade 11 has the same concept as the inner surface of the cylinder A1, and FIG. 5B shows that the convex inclined surface 51 of the lower blade 21 has the outer surface of the cylinder A2. The concept should be the same and the diameter should be the same.

FIG. 6A is a front view of a cutting plane in which the end of the upper blade 11 is cut off with respect to the vertical one plane VP and contacted with the vertical one plane VP, and FIG. 6B shows the end of the lower blade 21 being vertical. The cutting plane which cuts out on the basis of the plane VP and contacts the vertical one plane VP is seen from the front, and FIG. 7A is a view of the blade from which the cutting of the upper blade 11 is completed, and FIG. 7B is a lower blade ( 21) The blade from which cutting was completed was seen from the inside.

8 shows the convex arc blade 53 and the convex arc blade 54 of the upper and lower blades 11 and 21 so that the vertical one plane VP is further within the polishing deviation range. The upper and lower blades 53 and 54 are simultaneously polished to form arc-shaped blades 53 and 54 that are aligned up and down, and the blades are extended to face the vertical flat surface VP. Seen from

Meanwhile, the convex surface 55 is formed along the inclination outside the tip of the upper blade 11 and the concave surface 56 is formed along the inclination outside the tip of the lower blade 21. The concave surface 56 of the lower blade 21 further improves accessibility under the nail.

Thus, in the present invention, in the upper blade 11 and the lower blade 21, the inclined surface of the inner side where the blade is finally formed has the same inclination angle of upper and lower, and at the same time, the concave slope 52 and the convex slope 51 which have the same diameter. ), An arc nail clipper can be obtained by precisely engaging the concave arc blade 53 and the convex arc blade 54 in a vertical one plane on two dimensions.

As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this, In the technical field to which this invention belongs, various correction is carried out within the equal range of the technical thought of this invention, and a claim. And variations are possible.

As described above, according to the arc nail clipper of the present invention, when the upper and lower arc blades are abutted and polished vertically at the same time, the upper blade is a concave arc curved surface and the lower blade is a convex arc blade. An arc nail clipper can be manufactured in which the upper and lower blades are precisely matched.

In particular, because the curve of the upper and lower arc-shaped blade does not change regardless of the variation in the polishing depth, as a result, an elaborate product that does not open a gap is made, and there is an effect that can be produced in a large amount.

Claims (6)

One end of the upper and lower blades constituting the nail clipper blade is inclined with the same inclination angle so that the upper and lower meet each other, the inner side of the downward slope of the upper blade is a concave arc of constant curvature extends along the slope and the blade is formed The end is formed in a vertical plane, the inner side of the upwardly inclined surface of the lower blade has a convex arc having the same curvature as the upper side extends along the inclined surface and forms the end in which the blade is to be formed in a vertical flat plane, Abutting and grinding at the same time in a vertical plane, the upper blade is a concave arc blade, the lower blade is a convex arc blade manufacturing method characterized in that the convex arc blade is formed. In the nail clipper blade composed of the upper blade and the lower blade, One end of the upper blade and the lower blade are inclined with the same inclination angle so that the upper and lower sides meet each other, and the inner side of the downwardly inclined surface of the upper blade has a concave arc of constant curvature extending along the inclined surface and the end where the blade is to be formed is vertical. It is formed in a plane, the inner side of the upper inclined surface of the lower blade is formed with a convex arc having the same curvature as the upper side extends along the inclined surface and the end of the blade is formed in a vertical one plane, the upper and lower blades abut Polished in a vertical plane, the upper blade is a concave arc-shaped blade, the lower blade is an arc nail clipper, characterized in that the convex arc-shaped blade is formed. 3. The arc nail clipper blade according to claim 2, wherein the upper blade and the lower blade are integrally formed with one side by rivet welding. 3. The arc nail clipper blade according to claim 2, wherein the upper blade and the lower blade are integrally formed by bending one side. In the nail clipper with a nail clipper blade and the support shaft which penetrated the support shaft hole formed in this blade body, One end of the upper blade and the lower blade constituting the nail clipper blade is inclined with the same inclination angle so that the upper and lower meet each other, the inner side of the downward slope of the upper blade is a concave arc of constant curvature extends along the slope and the blade is formed The end to be formed in a vertical flat plane, the inner side of the upward inclined surface of the lower blade is a convex arc having the same curvature as the upper side extends along the inclined surface and the edge is formed in a vertical flat plane, the upper, lower blade At the same time, the upper blade is a concave arc-shaped blade, the lower blade is a concave arc-shaped blade formed by forming a concave arc blade at the same time. A nail clipper body having a support shaft hole formed on one side, and a nail clipper blade having a support shaft hole formed of an upper blade and a lower blade, and a lever positioned at the upper portion of the nail clipper body and connected through the blade and the body via a support shaft to leverage the lever. In the nail clipper which is comprised, One end of the upper blade and the lower blade constituting the nail clipper blade is inclined with the same inclination angle so that the upper and lower meet each other, the inner side of the downward slope of the upper blade is a concave arc of constant curvature extends along the slope and the blade is formed The end to be formed in a vertical flat plane, the inner side of the upward inclined surface of the lower blade is a convex arc having the same curvature as the upper side extends along the inclined surface and the edge is formed in a vertical flat plane, the upper, lower blade At the same time, the upper blade is a concave arc-shaped blade, the lower blade is a concave arc-shaped blade formed by forming a concave arc blade at the same time.

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