WO2013021693A1

WO2013021693A1 - Nail clipper

Info

Publication number: WO2013021693A1
Application number: PCT/JP2012/060811
Authority: WO
Inventors: 石田卓也
Original assignee: 興和商事株式会社
Priority date: 2011-08-10
Filing date: 2012-04-23
Publication date: 2013-02-14
Also published as: WO2013021474A1; CN103717107A; US20140202003A1

Abstract

Provided is a nail clipper which takes into account the shape of the human nail and does not cause unnatural deformations to the nail when cutting the nail, and which is suitable for cutting the nail gently and softly. This nail clipper cuts a nail by bringing one cutting edge formed on a tip of one cutting blade close to another cutting edge formed on a tip of another cutting blade, the cutting edges being disposed facing each other, placing the nail to be cut between the two cutting edges, and bringing the cutting edges into contact with each other. The one cutting edge and the other cutting edge each has, in a direction perpendicular to the direction in which each cutting edge moves so as to approach each other, a straight line portion which faces and extends parallel to each other and a curved portion which continues from the straight line portion and which curves and extends at a curvature corresponding to each other.

Description

Nail clippers

This invention relates to nail clippers. In particular, the present invention relates to a nail clipper that is suitable for gently and gently cutting a nail without giving an unnatural deformation to the nail.

One blade edge formed at the tip of one of the opposing cutting blades and the other blade edge formed at the tip of the other cutting blade approach each other, and the nail to be cut between them Various proposals have been made for nail clippers that cut the nail with a pinch interposed therebetween.

Considering the shape of the human nail, the following nail clipper proposals aim to gently and gently cut the nail without causing unnatural deformation when cutting the nail: (For example, Patent Documents 1 and 2).

FIGS. 1A, 1B, and 2 show an example of a conventional nail clipper. 1A and 1B are clip-type nail clippers, and FIG. 2 is a nipper-type nail clipper.

In the clip-type nail clipper, generally, the upper plate 50 and the tip of the lower plate 51 (the front side in FIG. 1A) integrated with each other on the base end side (the back side in FIG. 1A). ), The cutting blade 52 and the cutting blade 53 are formed to face each other. Support pins 54 are inserted in the top-bottom direction on the tip side of the upper plate 50 and the lower plate 51. The base end side (the lower side in FIG. 1A) of the pressing operation plate 55 is rotatably supported on the upper end portion of the support pin 54 on the upper plate 50 side.

A lever portion 56 is formed on the proximal end side of the pressing operation plate 55. As shown in FIG. 1A, the lever portion 56 faces downward and is in contact with the upper surface of the upper plate 50, and the distal end side (upper side in FIG. 1A) 55a of the pressing operation plate 55. Is pushed down around the base end side that is rotatably supported by the support pin 54. As a result, the lever 56 presses the upper surface of the upper plate 50, and the cutting edge 57 formed at the distal end of the upper cutting blade 52 and the cutting edge 58 formed at the distal end of the lower cutting blade 53. However, they approach each other as indicated by

arrows

60 and 61. In this way, the nail (not shown) to be cut is sandwiched between the upper blade edge 57 and the lower blade edge 58 facing the upper blade edge 57 and cut.

In the nipper-type nail clipper, generally, the hinge portion 70a of the other lever 70 is rotatably attached to the shaft 72 fixed to the hinge portion 71a of the one lever 71. And the cutting blade 73 currently formed in the front end side of the

levers

70 and 71 and the cutting blade 74 have mutually opposed. Cutting edges (not shown) are respectively formed at the tip portions of the cutting blade 73 and the cutting blade 74 facing each other. In the conventional example shown in the drawing, the cutting edge is structured to bend with curvatures corresponding to each other. This is a convex cutting edge in which the cutting edge formed at the tip of the cutting blade 73 is convex, and the concave cutting edge is formed in the leading edge of the cutting blade 74.

When the

levers

70 and 71 are gripped as indicated by

arrows

75 and 76 around the shaft 72, one blade tip formed at the tip of the cutting blade 73 and the other formed at the tip of the cutting blade 74 As shown by

arrows

77 and 78. As a result, a nail (not shown) to be cut is sandwiched between the two and cut.

By the way, human nails to be cut generally have various shapes when viewed from the tip side of the nails. For example, when viewed from the tip side of the nail, it may be curved downward as it goes from the center to the left and right sides, or the center may be flat and the left and right may be curved. In addition, when viewed from the front end side of the nail, there is a case where the entire shape is flat from the left side to the right side.

The conventional nail clippers shown in FIGS. 1 (a), 1 (b), and 2 are proposed in consideration of the shape and structure of the human nail. In the conventional nail clipper shown in FIGS. 1 (a) and 1 (b), the upper blade edge 57 and the lower blade edge 58 facing each other move away from the

center portions

57a and 58a to the left and right sides, respectively. The structures were curved toward the lower side with the corresponding curvatures. In the conventional nail clipper shown in FIG. 2, the cutting edges formed at the tip portions of the facing

cutting blades

73 and 74 are respectively a convex cutting edge and a concave cutting edge that are curved with curvatures corresponding to each other. The structure was adopted. Thus, in consideration of the shape of a human nail, it has been aimed to gently and gently cut the nail without giving an unnatural deformation to the nail when the nail is cut.

JP 2001-46142 A U.S. Pat. No. 4,637,137

Considering the shape of human nails, various types of nail clippers have been proposed for the purpose of gently and gently cutting the nails without causing unnatural deformation when the nails are cut. However, there was still room for improvement.

Therefore, this invention proposes a nail clipper that is suitable for cutting the nail gently and gently without giving unnatural deformation to the nail when cutting the nail in consideration of the shape of the human nail. The purpose is to do.

The invention described in claim 1
One blade edge formed at the tip of one of the opposing cutting blades and the other blade edge formed at the tip of the other cutting blade approach each other, and the nail to be cut between them In the nail clipper that cuts the nail across
The one blade edge and the other blade edge are continuous with each other in a direction orthogonal to a direction in which both of the blade edges move so as to approach each other, and a linear portion extending in parallel to each other, and the linear portion, It is a nail clipper characterized by comprising a curved portion that curves and extends at a curvature corresponding to each other.

The invention according to claim 2
The nail clipper according to claim 1, wherein the curved portions are formed on both sides of the linear portion in a direction in which the linear portion extends.

The invention described in claim 3
The nail clipper according to claim 1, wherein the curved portion is formed only on one side of the linear portion in a direction in which the linear portion extends.

The invention according to claim 4
The one cutting blade and the other cutting blade that are opposed to each other cut a plate body at a central portion to separate one blade portion and the other blade portion, and The tip edge that faces the other blade portion is the one blade edge, and the tip edge of the other blade portion that faces the one blade portion is the other blade edge. Or it is a nail clipper of 2 description.

The invention according to claim 5
5. The nail clipper according to claim 4, wherein the one cutting blade and the other cutting blade are detachably attached to the tips of a pair of blade edge supports that approach and separate from each other. It is.

According to the present invention, in consideration of the shape of a human nail, a nail clipper that is more suitable by gently and gently cutting the nail without giving unnatural deformation to the nail when the nail is cut is provided. can do.

It is a figure showing an example of the conventional clip type nail clipper, Comprising: (a) is a front view in the state to use, (b) is an enlarged front view of the blade edge | tip part in Fig.1 (a). The side view showing an example of the conventional nipper type nail clippers. It is a figure showing an example of the clip type nail clipper of this invention, (a) is a front view in the state to use, (b) is an enlarged front view of the blade edge | tip part in Fig.3 (a). The perspective view which abbreviate | omitted one part in the state which is not using the clip type nail clipper of this invention shown in FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure showing an example of the nipper type nail clipper of this invention, Comprising: (a) is a side view of the state which opens the opposing blade edge, (b) is a side view of the state which closes the opposing blade edge. (A) The top view explaining the state which cut | disconnects one plate body in a center part, and forms the cutting blade employ | adopted for the nail clipper of this invention, (b) The cutting blade shown in Fig.6 (a) is attached. The top view showing the front-end | tip part of a pair of blade edge | tip support body which are shown, (c) The state where the cutting blade shown in Fig.6 (a) was attached to the front-end | tip part of a pair of blade edge | tip support body shown in FIG.6 (b) is demonstrated. Plan view. The side view showing an example of the nail clipper of this invention in which the cutting blade of Fig.6 (a) illustration is employ | adopted.

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

The nail clipper 1 of the present invention shown in FIGS. 3 (a) and 3 (b) is a clip-type nail clipper, and its basic structure is the conventional structure described with reference to FIGS. 1 (a) and 1 (b). Same as clip-type nail clippers.

The upper plate 2 and the lower plate 3 are integrated with each other on the base end side (the rear side in FIG. 3A and the left side in FIG. 4). A cutting blade 4 and a cutting blade 5 are formed opposite to each other at the tips of the upper plate 2 and the lower plate 3 (the front side in FIG. 3A and the right side in FIG. 4). Support pins 6 are inserted in the top-bottom direction on the tip side of the upper plate 2 and the lower plate 3. The base end side of the pressing operation plate 7 (the lower side in FIG. 3A and the right side in FIG. 4) is rotatably supported by the upper end portion of the support pin 6 on the upper plate 2 side.

A lever portion 8 is formed on the proximal end side of the pressing operation plate 7. As shown in FIG. 3A, the tip end side 7 a of the pressing operation plate 7 can be rotated to the support pin 6 with the lever portion 8 facing downward and in contact with the upper surface of the upper plate 2. Press down with the base end side supported by the center. Thereby, the lever portion 8 presses the upper surface of the upper plate 2, and the blade edge 9 formed at the distal end portion of the cutting blade 4 and the blade edge 10 formed at the distal end portion of the cutting blade 5 are indicated by arrows 11, As shown at 12, they approach each other. In this way, a claw (not shown) to be cut is sandwiched between the upper blade edge 9 and the opposed lower blade edge 10 and cut.

In the nail clipper 1 of the present invention, as shown in an enlarged view of the main part in FIG. 3 (b), the opposing cutting edge 9 and the cutting edge 10 have arrows 11 that move so that both approach each other, 12, linear portions 9a and 10a extending in parallel and facing each other are provided in directions orthogonal to the direction indicated by 12, respectively. Further, the blade edge 9 and the blade edge 10 are provided with curved portions 9b, 9c, 10b, and 10c that are continuous with the linear portions 9a and 10a and that are curved and extended with corresponding curvatures.

In the case of the clip-type nail clipper 1 shown in FIGS. 3A and 3B, the curved portions 9b, 9c, 10b, and 10c are provided on both sides of the linear portions 9a and 10a in the direction in which the linear portions 9a and 10a extend. Is formed.

That is, in the nail clipper 1 of the present invention shown in FIGS. 3 (a) and 3 (b), it moves in the direction indicated by the

arrows

11 and 12 toward the center side of the blade edge 9 and the blade edge 10 facing each other. In this case, linear portions 9a and 10a extending in parallel and facing each other are provided in a direction orthogonal to the moving direction. Then, curvatures corresponding to each other on both sides of the linear portions 9a and 10a in the direction in which the linear portions 9a and 10a extend in succession to the linear portions 9a and 10a in the center portion of the blade edge 9 and the blade edge 10, respectively. In the drawing, curved portions 9b, 9c, 10b, and 10c that are curved and extended toward the lower side are provided.

Therefore, when the nail is cut by the nail clipper 1 of the present invention, it is made to correspond appropriately to the shape of various human nails, and when the nail is cut, the nail is not deformed unnaturally, gently and gently For example, when viewed from the front end side of the nail, the nail that curves downward as it goes from the center to the left and right sides is represented by the reference numerals 9b of the blade edges 9 and 10 in FIG. Cutting is performed by a curved portion indicated by reference numeral 10b, or by a curved portion indicated by reference numerals 9c and 10c.

Further, for the claw having a flat central portion and curved left and right, the central flat portion is opposed to each other indicated by reference numerals 9a and 10a of the blade edges 9, 10 in FIG. 3B. And cut at straight parts that extend in parallel. The left and right curved portions are indicated by curved portions indicated by reference numerals 9b and 10b of the

cutting edges

9 and 10 in FIG. 3B, or indicated by reference numerals 9c and 10c. Cut by the curved part that is being cut.

And the nail | claw which is a flat shape from left side to the right side when it sees from the front end side of a nail | claw is shown with the code | symbol 9a and the code | symbol 10a of the blade edges 9 and 10 in FIG.3 (b). Cut along straight portions that extend parallel to each other.

In the case of the conventional nail clipper illustrated in FIGS. 1A, 1B, and 2, the nail of the three different shapes as described above, all correspondingly properly, and nail gently. Was difficult.

According to the nail clipper 1 of the present invention, the nail of the three different shapes as described above, all corresponding appropriately, gently and gently without giving the unnatural deformation to the nail when cutting the nail Can be cut.

The nail clipper 31 of the present invention shown in FIGS. 5A and 5B is a nipper type nail clipper, and its basic structure is the same as the conventional nipper type nail clipper described with reference to FIG. It is.

The hinge portion 20a of the other lever 20 is rotatably attached to the shaft 22 fixed to the hinge portion 21a of the one lever 21. And the cutting blade 23 currently formed in the front end side of the

levers

20 and 21 and the cutting blade 24 have mutually opposed. Cutting

edges

25 and 26 are formed at the tip portions of the cutting blade 23 and the cutting blade 24 facing each other.

When the

levers

20 and 21 are gripped about the shaft 22 as indicated by

arrows

27 and 28, a blade edge 25 formed at the distal end portion of the cutting blade 23 and a blade edge 26 formed at the distal end portion of the cutting blade 24. And approach each other as indicated by

arrows

29 and 30. As a result, a nail (not shown) to be cut is sandwiched between the two and cut.

In the nail clipper 31 of the present invention, the cutting edge 25 and the cutting edge 26 facing each other are opposed to each other in directions orthogonal to directions indicated by

arrows

29 and 30 that move so as to approach each other.

Linear portions

25a and 26a extending in parallel with each other. Further, the blade edge 25 and the blade edge 26 are provided with curved portions 25b and 26b which are continuous with the

linear portions

25a and 26a and bend and extend with curvatures corresponding to each other.

In the case of the nipper-type nail clipper 31 shown in FIGS. 5A and 5B, the curved portions 25b and 26b are formed on one side of the

linear portions

25a and 25a in the direction in which the

linear portions

25a and 26a extend. ing.

That is, in the nail clipper 31 of the present invention shown in FIGS. 5 (a) and 5 (b), when the

blades

25 and 26 facing each other move in the directions indicated by the

arrows

29 and 30 so as to approach each other. The

linear portions

25a and 26a extending in parallel and facing each other are provided in a direction orthogonal to the moving direction. Further, curved portions 25b and 26b that are curved and extend with curvatures corresponding to each other are provided continuously to the

linear portions

25a and 26a of the blade edge 25 and the blade edge 26, respectively.

Therefore, in the case of the nipper-type nail clipper 31 according to the present invention, since the opposed cutting

edges

25 and 26 have such a characteristic structure, when the nail is cut, the shape of the human nail is appropriately set. Correspondingly, the nail can be cut gently and gently without giving an unnatural deformation to the nail.

For example, when viewed from the front end side of the nail, the nail that curves downward as it goes from the center to the left and right sides is indicated by reference numerals 25b and 26b of the cutting edges 25 and 26 in FIG. Cut by the curved part that is.

Further, with respect to the nail having a flat central portion and curved left and right, the central flat portion is opposed to each other indicated by

reference numerals

25a and 26a of the blade edges 25 and 26 in FIG. And cut at straight parts that extend in parallel. The left and right curved portions are cut by the curved portions indicated by reference numerals 25b and 26b of the blade edges 25 and 26 in FIG. 5A.

And the nail | claw which is a flat shape from the left side to the right side when it sees from the front end side of a nail | claw is shown with the code | symbol 25a and the code | symbol 26a of the blade edges 25 and 26 in Fig.5 (a). Cut along straight portions that extend parallel to each other.

According to the nail clipper 31 of the present invention, the three kinds of differently shaped nails as described above, all corresponding appropriately, gently and gently without giving the unnatural deformation to the nail when cutting the nail. A nail can be cut.

FIG. 6A illustrates an example of a cutting blade employed in the nail clipper of the present invention.

The one cutting blade and the other cutting blade facing each other in the nail clipper of the present invention described above can be formed by cutting a single plate at the center.

For example, as shown in FIG. 6 (a), a single thin metal plate is cut at the center, and one blade shown on the left side in FIG. 6 (a) and FIG. ) And the other blade portion shown on the right side. Then, the leading edge that faces the other blade part of one blade part is used as one cutting edge, and the leading edge that faces the one blade part of the other blade part is used as the other cutting edge.

At this time, it is possible to grind only one of the blade edges formed by the tip edge facing the other blade portion of the one blade portion. Or only the other blade edge formed by the front-end | tip edge which opposes one blade part of the other blade part can be ground. In addition, both the one blade edge formed at the tip edge facing the other blade part of the one blade part and the other blade edge formed at the tip edge facing the one blade part of the other blade part. It can also be ground.

In the embodiment shown in FIG. 6A, one blade portion shown on the left side is formed on a cutting blade 85 having a blade edge 90, and the other blade portion shown on the right side is the blade edge 89. It is formed in the provided cutting blade 84.

The cutting edge 89 and the cutting edge 90 are provided with

linear portions

89a and 90a extending in parallel and facing each other in directions orthogonal to directions indicated by

arrows

11 and 12 in which both of them move so as to approach each other, 3 (a) and 3 (b) described above are provided with

curved portions

89b, 89c, 90b, and 90c that are continuous with the

linear portions

89a and 90a and bend and extend with curvatures corresponding to each other. This is the same as the illustrated embodiment.

In addition, when cutting a thin plate suitable for a nail-cutting blade at the center by press cutting or the like, the attachment used when attaching the

cutting blades

84 and 85 formed as described above to the support Holes 91 and 92 are also provided.

Thus, the

cutting blades

84 and 85 formed by cutting one thin plate suitable for a nail-cutting blade at the center by press cutting or the like has one blade edge 89 and the other blade edge 90 indicated by an arrow 11. , 12 close to each other in the direction indicated by 12 and at the tips of a pair of blade edge supports approaching and separating from each other so as to cut the claws by sandwiching the claws to be cut between them and bringing them into contact with each other, Each of the nail clippers according to the present invention can be attached and detachably mounted.

6B, 6C, and 7 illustrate an example of a nipper-type nail clipper 80 to which the above-described

cutting blades

84 and 85 are attached.

6 (b), 6 (c) and FIG. 7, the hinge portion 20a of the other lever 20 is rotatably attached to the shaft 22 fixed to the hinge portion 21a of the one lever 21. This is the same as the nail clipper 31 shown in FIGS. 5 (a) and 5 (b).

The nail clipper 80 has a structure in which the

cutting blades

84 and 85 are attached to the cutting

blade mounting portions

81 and 82 formed on the distal ends of the

levers

20 and 21, respectively. The cutting

blade mounting portions

81 and 82 are formed on the

hinge portions

20a and 21a of the

levers

20 and 21, respectively, and one blade edge 89 and the other blade edge 90 approach each other in the directions indicated by

arrows

11 and 12, The tips of a pair of blade edge supports that come close to and separate from each other are configured so as to cut the claws by putting the claws to be cut between and bringing them into contact with each other.

The cutting edges 89 and 90 of the

cutting blades

84 and 85 have the same structure as the

cutting edges

9 and 10 of the nail clipper 1 of the present invention described in FIGS. 3 (a) and 3 (b). (B) As explained in the illustrated embodiment, the nail having different shapes is appropriately handled, and the nail is gently and gently cut without giving an unnatural deformation to the nail when the nail is cut. be able to.

In any case, in the embodiment shown in FIG. 6 (a), one plate is cut at the center and separated into one blade and the other blade, and the other of the one blade is the other. One of the opposing cuttings described above is configured such that the tip edge facing the blade portion is the one blade edge and the tip edge facing the one blade portion of the other blade portion is the other blade edge. A blade and the other cutting blade are formed. Therefore, when the nail is cut, the blade 89 and the blade 90 can be completely closed without a gap. That is, as described in the embodiment shown in FIG. 6 (a), the cutting edges facing each other when cutting the nail are formed by forming the above-described one cutting blade and the other cutting blade as described above. Can be perfectly closed with no gap between them, and this can be done for any shape of blade.

The

cutting blades

84 and 85 are formed by cutting a single plate, and the cutting blades prepared in this way can be attached to and detached from the tips of a pair of blade edge supports that approach and separate from each other. Since it is the same as that of embodiment mentioned above except the point which is mounted | worn, the same code | symbol is attached | subjected to the part demonstrated in FIG.3 (a), (b), FIG.5 (a), (b), and the Description is omitted.

When attaching the

cutting blades

84 and 85 to the

cutting blades

81 and 82, bolts are attached to the screw holes 86 and 87 formed in the cutting

blade attachment portions

81 and 82 via the attachment holes 91 and 92 of the

cutting blades

84 and 85. The fixing

brackets

92 and 93 such as those are screwed together (FIG. 6C).

As described above, the

cutting blades

84 and 85 are attached to the cutting

blade mounting portions

81 and 82 formed on the distal ends of the

levers

20 and 21, respectively. The

blades

84 and 85 can be easily replaced with new ground cutting blades.

As a means for attaching the

cutting blades

84 and 85 to the cutting

blade attachment portions

81 and 82, screws formed in the cutting

blade attachment portions

81 and 82 through attachment holes 91 and 92 of the

cutting blades

81 and 82, respectively. Although the method of screwing the fixing

fittings

92 and 93 such as bolts into the

holes

86 and 87 has been described as an example, the present invention is not limited to this means, and other attachment means can be employed.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such embodiments, and various modifications can be made within the technical scope grasped from the description of the claims. It is.

Brief description of symbols

DESCRIPTION OF SYMBOLS 1 Claw cutting 4 Cutting blade 5 Cutting blade 9 Cutting edge 9a Linear part 9b, 9c Curved part 10 Cutting edge 10a Linear part 10b, 10c Curved part 31 Claw cutting 23 Cutting blade 24 Cutting blade 25 Cutting edge 25a Linear part 25b Curved part 26 Cutting edge 26a Linear portion 26b

Curved portion

11, 12 Direction in which opposing cutting edges move to approach each other 29, 30 Direction in which opposing cutting edges move to approach each other 81, 82 Cutting

blade mounting portion

84, 85

Cutting blade

86, 87 Screw hole 89 Cutting edge

89a Linear portion

89b, 89c Curved portion 90 Cutting edge

90a Linear portion

90b, 90c

Curved portion

91, 92, Mounting hole 93 Fixing bracket

Claims

One blade edge formed at the tip of one of the opposing cutting blades and the other blade edge formed at the tip of the other cutting blade approach each other, and the nail to be cut between them In the nail clipper that cuts the nail by bringing them into contact with each other,
The one blade edge and the other blade edge are continuous with each other in a direction orthogonal to a direction in which both of the blade edges move so as to approach each other, and a linear portion extending in parallel to each other, and the linear portion, A nail clipper comprising a curved portion that curves and extends at a curvature corresponding to each other.
The nail clipper according to claim 1, wherein the curved portion is formed on both sides of the linear portion in a direction in which the linear portion extends.
The nail clipper according to claim 1, wherein the curved portion is formed only on one side of the linear portion in a direction in which the linear portion extends.
The one cutting blade and the other cutting blade that are opposed to each other cut a plate body at a central portion to separate one blade portion and the other blade portion, and The tip edge that faces the other blade portion is the one blade edge, and the tip edge of the other blade portion that faces the one blade portion is the other blade edge. Or nail clipper of 2.
5. The nail clipper according to claim 4, wherein the one cutting blade and the other cutting blade are detachably attached to the tips of a pair of blade edge supports that approach and separate from each other. .