JP3129968U - Sharpener - Google Patents

Abstract

[PROBLEMS] The present invention is lightweight and has a variety of knives such as kitchen knives and scissors used at home, sickle and scissors used in horticulture and agricultural work, cutting blades, and needles such as awls and ice picks. A sharpening tool that can sharpen easily and smoothly, with a fine finish, easily in a short time, regardless of whether the blade has a straight blade or a curved blade. Offer.
A sharpening tool (1) comprising a sharpening part (10) whose surface is coated with diamond abrasive grains and a gripping part (20) for holding the sharpening part (10), wherein the sharpening part (10) is provided on each of the front and back surfaces. Further, a flat sharpening portion 11 and a curved sharpening portion 12 are configured. Further, the diamond abrasive grains coated on the sharpened portion 10 are of different particle sizes on the front and back surfaces of the sharpened portion 10.
[Selection] Figure 1

Description

  The present invention relates to a sharpening tool for sharpening a blade.

Conventionally, sharpening tools for sharpening blades are used for various blades such as kitchen knives and scissors used at home, sickles and scissors used in gardening and agricultural work, cutting blades, and needles such as awls and ice picks. was there. There were metal and ceramic materials. Many of the general sharpening tools perform blade sharpening by moving the sharpening tool back and forth, and there is a problem that sharpening is not possible depending on the shape of the blade.
On the other hand, Japanese Patent Application Laid-Open No. 2004-122348 provides a blade sharpener configured to fix a blade and sharpen the blade at an arbitrary angle using an angle adjustment scale.
Japanese Patent Application Laid-Open No. 2000-246604 provides a needle-shaped blade sharpening tool configured to sharpen a needle-shaped blade with a recess formed on the inner wall of a ceramic body as a sharpening surface.
JP 2004-122348 A JP 2000-246604 A

The blade sharpener as shown in the above-mentioned Patent Document 1 can freely adjust the sharpening angle. However, since the blade must be fixed and sharpened, there is a problem that it is limited to the blade that can fix the object. Moreover, the blade sharpening tool as shown in the above-mentioned Patent Document 2 is composed of a ceramic body, and there is a problem that the target blade is limited to a needle-like one.
Also, when sharpening a curved blade such as a sickle with a sharpening tool that has only a conventional flat sharpening portion, the flat sharpening portion comes into contact with the curved blade at a point. I couldn't sharpen it well. Of course, in the case of a sharpening tool having only a curved sharpening portion, a straight blade such as a normal knife could not be sharpened efficiently.
Further, many of the conventional sharpening tools have one kind of roughness of the sharpened surface. If the eyes are roughened, the sharpened surface is sharpened but the sharpened surface becomes rough. Also, if you make your eyes fine, the sharpened surface will be finished cleanly, but there are problems such as requiring time and techniques.

Therefore, the present invention solves the above-mentioned problems of the prior art, is lightweight, kitchen knives and scissors used at home, sickle, scissors, brush cutter blades used in horticulture and agricultural work, and awl and ice picks etc. It is an object to provide a sharpening tool that can easily sharpen various kinds of blades up to needles.
In particular, it is an object of the present invention to provide a sharpening tool that can be easily sharpened in a short time with a beautiful finish, whether it is a blade having a straight blade or a blade having a curved blade.

In order to achieve the above object, a sharpening tool of the present invention is a sharpening tool composed of a sharpening portion whose surface is coated with diamond abrasive grains and a gripping hand portion that holds the sharpening portion. A first feature is that a surface sharpening portion and a curved surface sharpening portion are formed on each of the front and back surfaces.
In addition to the first feature described above, the sharpening tool of the present invention is characterized in that the diamond abrasive grains coated on the sharpened portion are of different sizes on the front and back surfaces of the sharpened portion. It has 2 features.
Further, in the sharpening tool of the present invention, in addition to the first or second feature described above, the planar sharpening portion is configured as a flat surface extending toward the tip at each front portion of the front and back surfaces of the sharpening portion. This is a third feature.
The sharpening tool of the present invention has a fourth feature that, in addition to any one of the first to third features, the flat surface of the flat sharpening portion has a thin tip.
Moreover, the sharpening tool of the present invention has a curved sharpening portion as a curved surface whose cross section is curved in an arc shape in each rear portion of the front and back surfaces of the sharpening portion, in addition to any of the first to fourth features described above. The fifth feature is that it is configured.
The sharpening tool of the present invention has a sixth feature that, in addition to any of the first to fifth features described above, the grip portion has an arc-shaped scissors at the front portion thereof.
The sharpening tool of the present invention has a seventh feature that, in addition to any of the first to sixth features, the grip portion is configured to have a wide shape that gently spreads toward the rear end. It is said.

According to the sharpening tool of claim 1, the sharpening tool is composed of a sharpening portion whose surface is coated with diamond abrasive grains, and a gripping hand portion that holds the sharpening portion. Since the surface sharpening part and the curved sharpening part are configured on each of the front and back surfaces,
In the plane sharpening part, blades such as knives and scissors can be sharpened efficiently, and in the curved sharpening part, blades such as sickle and scissors are mainly sharpened. Sharpen efficiently.
In addition, the sharpening tool of the present invention can handle various blade shapes by holding the grip hand by hand and using the surface sharpened part and the curved surface sharpened part alternately or properly. It is useful for reducing labor.

According to the sharpening tool of the second aspect, in addition to the function and effect of the configuration of the first aspect, the diamond abrasive grains coated on the sharpened portion are of different particle sizes on the front and back surfaces of the sharpened portion. Because we use
By roughening the grain size of the diamond abrasive grain on one side and making the grain surface of the diamond abrasive grain finer, the other side is used as the finished sharpened surface. After sharpening and finishing, the final sharpening can be done on the other side. Further, since the surface sharpening and the surface sharpening of the rough sharpening can be performed, and the surface sharpening and the surface sharpening of the finishing sharpening can be further performed, the blade can be sharpened well and freely.

Further, according to the sharpening tool of claim 3, in addition to the function and effect of the configuration of claim 1 or 2, the planar sharpening portion is directed to the front end of each of the front and back surfaces of the sharpening portion toward the tip. Since it is configured as an extended plane,
The planar sharpening portion that is extended to have a long diameter can efficiently sharpen a knife having a linear shape with a knife such as a knife or scissors in a wide area while ensuring a good stroke.

Moreover, according to the sharpening tool of Claim 4, in addition to the effect by the structure in any one of Claims 1-3, since the plane of the plane sharpening part is comprised by the front-end | tip thin,
For example, a small blade such as a chain saw or a temporary cutting blade or a narrow valley portion of the blade can be made to penetrate sufficiently and can be sharpened well.

Moreover, according to the sharpening tool of Claim 5, in addition to the effect by the structure in any one of Claims 1-4, a curved surface sharpening part is crossed in each rear part of the front and back of a sharpening part. Since the surface is configured as a curved surface curved in an arc shape,
Even in the case of a blade with a curved shape such as a sickle or a scissors that could not be polished well by hitting the blade with a point at the flat sharpening part, the curved sharpening part where the sharpening part is curved in an arc shape Because it hits the surface, it can be sharpened efficiently while touching in a wide area.
In addition, by changing the angle between the curved sharpening part and the surface to be polished of the blade, it is possible to sharpen the blade delicately with curved surfaces having various radii of curvature.

Moreover, according to the sharpening tool of Claim 6, in addition to the effect by the structure in any one of Claims 1-5, the grip hand part has comprised the arc-shaped hook in the front part. So
In the operation of sharpening the blade while moving the sharpening tool back and forth, the scissors can serve as a stopper to prevent the hand from hitting the sharpened portion or the blade and damaging it, and it can be pushed forward easily. In addition, since a bowl is provided, it can also be placed in a kitchen knife with a knife.

Moreover, according to the sharpening tool of Claim 7, in addition to the effect by the structure in any one of Claims 1-6, a grip hand part is comprised in the wide shape which spreads gradually toward a rear-end direction. Because
It is easy to grasp, and when the sharpening tool is pulled backward in the blade sharpening work, the hand is difficult to slip and can be pulled without falling out, so that the work is easy.

Embodiments of the present invention will be described in detail with reference to the following drawings.
1 is a plan view of a sharpening tool according to an embodiment of the present invention, FIG. 2 is a front view of the sharpening tool according to an embodiment of the present invention, FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG. FIG. 5 is an enlarged sectional view taken on line CC of FIG. 2.

With reference to the drawings, the sharpening tool 1 of the present invention is composed of a sharpening portion 10 and a gripping portion 20.
The sharpening portion 10 is formed in an elongated flat shape as a whole, and diamond abrasive grains 30 having different particle diameters are coated on the front and back surfaces. One side of the front and back surfaces of the sharpened portion 10 is covered with diamond abrasive grains of coarse particles 31 as a rough sharpened surface 10a. Moreover, the other side is covered with diamond abrasive grains of fine particles 32 as a finishing sharpened surface 10b.
In this embodiment, the coarse particles 31 are 150 mesh and the fine particles 32 are 300 mesh. If the fine particles 32 are too fine, such as 800 mesh, it will take time to sharpen and will be difficult for amateurs to use. Therefore, in the present invention, the fine particles 32 are moderately fine and easy to use for women and amateurs. is doing.
The work of sharpening the blade can be easily and cleanly sharpened by, for example, rough sharpening with the rough sharpening surface 10a and then sharpening with the final sharpening surface 10b.

The sharpening portion 10 is obtained by coating the surface of a metal core member 40 with diamond abrasive grains 30, and a flat sharpening portion 11 and a curved sharpening portion 12 are formed on each of the front and back surfaces.
The planar sharpening part 11 is extended from the center of the longitudinal direction of the sharpening part 10 toward the tip, and has a long diameter. Further, the planar sharpening portion 11 is formed with a front end portion 11a so that the front half thereof is gradually narrowed toward the front end. The planar shape of the planar sharpening portion 11 is formed by cutting the core material 40 or the like. The flat portion of the processed core material 40 is covered with diamond abrasive grains to form the flat sharpening portion 11.
The surface sharpening unit 11 is suitable for sharpening a blade having a straight shape such as a kitchen knife or a scissors, and abuts against the blade over a wide area. it can. In addition, it is possible to sharpen the blade easily and cleanly because it is possible to infiltrate the thinned tip portion 11a into a blade with a small blade such as a chainsaw or brush cutter or a blade with a narrow blade valley. Can do.

The curved sharpened portion 12 has a cross section opposite to each other on the front surface (roughened surface 10a) side and back surface (finished polished surface 10b) side from the front side to the rear end in the longitudinal direction of the sharpened portion 10. It is formed in a curved surface shape in which an arc shape bulges in the direction.
That is, the curved sharpening portion 12 is configured as a sharpened surface having an arcuate curved surface on the front and back surfaces thereof. The radius of curvature of the arcuate curved surface is the smallest in the transverse direction, and the radius of curvature increases as the angle is increased with respect to the transverse direction.
Therefore, by using the curved surface sharpening portion 12 at various angles with respect to the surface to be polished of the blade, the surface to be polished of the blade can be delicately sharpened. In addition, when sharpening a blade having a curved shape such as a sickle or a scissors, if this curved sharpening portion 12 is used, the surface abuts against the blade, so that the operation is simple and can be performed in a short time. it can.
On the other hand, both end portions 12a with which the front and back curved sharpening portions 12 (roughening surface 10a, finishing sharpening surface 10b) are in contact with each other have an acute angle. Therefore, the blade can be sharpened even in the curved surface sharpening portion 12 by using the both end portions 12a to enter the narrow valley of the blade.

The grip portion 20 is attached as a plastic molding so as to cover the core material 40, and forms an arcuate collar 20a at the front portion. By providing the scissors 20a, when the sharpening tool 1 is moved back and forth to sharpen the blades, the scissors serve as a stopper and can be used safely without hitting the sharpening part or the blade with a hand. In addition, it is possible to easily push the force in the forward direction by bringing the gripping hand into contact with the heel 20a.
The grip part 20 has a wide shape 20b that gently spreads in the rear end direction. As a result, it is easy to grasp, and when the grip 20 is pulled backward during the sharpening operation, the hand is difficult to slip and is not easily removed.
A hole 20c is formed in the rear portion of the grip portion 20, and the sharpening tool can be suspended and stored by passing a string or the like through the hole 20c. It is also possible to use a jar 20a to insert a kitchen knife or the like.

It is a top view of the sharpening tool which concerns on embodiment of this invention. It is a front view of the sharpening tool which concerns on embodiment of this invention. It is an AA cross-sectional enlarged view of FIG. FIG. 3 is an enlarged sectional view taken along line BB in FIG. 2. It is CC sectional enlarged view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sharpening tool 10 Sharpening part 10a Roughening surface 10b Finish sharpening surface 11 Plane sharpening part 11a Tip part 12 Curved sharpening part 12a Both ends 20 Grasping part 20a Grain 20b Wide shape 20c Hole 30 Diamond abrasive grain 31 Coarse particle 32 Fine particle 40 Core material

Claims (7)

A sharpening tool comprising a sharpening portion whose surface is coated with diamond abrasive grains, and a gripping hand portion that holds the sharpening portion,
The sharpening part is characterized by comprising a surface sharpening part and a curved sharpening part on each of the front and back surfaces thereof.   2. The sharpening tool according to claim 1, wherein the diamond abrasive grains coated on the sharpening portion are of different sizes on the front and back surfaces of the sharpening portion.   The sharpening tool according to claim 1 or 2, wherein the flat sharpening portion is configured as a flat surface extending toward the tip at each front portion of the front and back surfaces of the sharpening portion.   The sharpening tool according to any one of claims 1 to 3, wherein the flat surface of the flat sharpening portion has a thin tip.   The sharpening tool according to any one of claims 1 to 4, wherein the curved sharpening portion is configured as a curved surface whose transverse cross section is curved in an arc shape at each rear portion of the front and back surfaces of the sharpening portion.   The sharpening tool according to any one of claims 1 to 5, wherein the grip portion is configured with an arc-shaped scissors at a front portion thereof.   The sharpening tool according to any one of claims 1 to 6, wherein the grip portion is configured to have a wide shape that gradually spreads toward the rear end.

Images