JPH07100740A - Cutter grinding tool - Google Patents

Abstract

PURPOSE:To grind simply surely a cutter with one hand of even an inexperienced person after only exercise for a short time by forming a groove capable of being fitted on the ridge of the cutter in any side ends of a body. CONSTITUTION:The ridge of a cutter C is fitted in a groove 2 formed in any side ends of a body 1 and a blade D of the cutter C is mounted on a grindstone F while the body is grasped by one's hand. A force is applied to finger tips to press hard the blade D of the cutter C against the upper surface of the grindstone F to slide the blade in the direction of the arrow G, i.e., back and forth. Then, since the blade is ground by one hand, contact surfaces between the blade surface of the cutter C and the grindstone F are not oscillated, i.e., since a fixed force is applied to the tips of forefinger, middle finger and medical finger to slide one's hand back and forth, the contact surfaces of the blade surface of the cutter C and the grindstone F make intimate contact to each other to be easily stabilized so that the blade surface is polished into a mirror surface.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blade sharpener.
That is, the present invention relates to a blade sharpening tool that allows anyone to sharpen a blade such as a knife or a kitchen knife easily and sharply.

[0002]

2. Description of the Related Art A conventional blade sharpener is as shown in FIG. That is, it has two grindstones arranged so as to form an acute V groove inside, forms an external groove so that the cutting edge of the cutting edge hits the acute groove, and cuts the blade of the cutting edge in the external groove. The general tool sharpening tool was to insert a blade and slide the tool back and forth according to the direction of the blade to sharpen.

Another conventional example will be described. Conventional blade sharpeners are as shown in FIGS. 13 and 14.
That is, it is a blade sharpener having a predetermined length and having a substantially C-shaped cutting surface. The edge of the knife was inserted into the C-shaped inner surface of this tool sharpening tool, the handle of the tool was grasped by one hand, and the tip of the other hand was attached to the tip of the tool for sharpening.

[0004]

The conditions for sharpening the blade sharply and sharply will be described below with reference to FIGS.
The blade surfaces A1 and A2 of the blade portion D of the sharpened blade C are both smooth, that is, mirror-finished. Mirrored blade surface A
In order to sharpen to 1, A2, the sliding direction of the blade D on the grindstone must be the direction E perpendicular to the blade D. However, if the handle of the tool C is held in one hand and the fingertip of the other is attached to the blade D and sharpened, the tool C sways up and down when front, back, left and right except the expert, so the blade surface of the sharpened tool C A1. A2 was curved as shown in FIG. 8, and the blade surfaces A1 and A2 did not become smooth mirror surfaces.

The conventional example shown in FIG. 12 violates this general principle and sharpens in the B direction shown in FIG. 9, so that the blade surfaces A1 and A2 are rounded as shown in FIG. . The conventional examples shown in FIGS. 13 and 14 conform to this general principle, but an unfamiliar person grasps the handle of the blade C with one hand.
When the other hand is attached to the tip of the blade (see FIG. 13) and the blade C is sharpened, the sliding direction E of the blade C is not constant and swings up, down, left and right, which results in a sliding direction E + α. As shown in FIG. 7, the surfaces A and B are not smooth as shown in FIG.
As described above, the blade surfaces A1 and A2 are rounded, and as a result, the sharpness becomes dull. And it took many years of practice to be able to sharpen a knife according to the above-mentioned principle.

In view of the above-mentioned drawbacks, the problem to be solved by the present invention is to provide a tool sharpening tool that anyone can sharpen the tool easily and sharply with a little practice. Has an aim.

[0007]

A tool sharpening tool according to the present invention solves the above problems and is as follows.

According to a first aspect of the present invention, there is provided a tool sharpening tool characterized in that a groove into which a ridge of a tool is fitted can be formed in a single portion on an arbitrary side of a main body.

According to a second aspect of the present invention, there is provided a tool sharpening tool characterized in that a groove into which a ridge of a tool is fitted can be formed on an arbitrary single side portion of the main body, and a projection at a lower end of the groove is shortened.

According to a third aspect of the present invention, a hole is formed in the main body substantially at the center so that two or more fingers can be inserted into the main body, and a groove is formed in any single side portion of the main body to fit a ridge of a blade, and the groove is formed. A sharpening tool, characterized in that a notch is formed at one end of a side single part opposite to the side single part of the main body.

According to a fourth aspect of the present invention, a hole is formed substantially in the center of the main body, into which two or more fingers can be inserted, and a groove into which a ridge of a cutter is fitted can be formed in a single side portion of the main body. A blade sharpening tool characterized in that a notch is formed at one end of the side single part opposite to the side single part of the main body, and the projection at the lower end of the groove is shortened.

According to a fifth aspect of the present invention, a main body having a U-shaped cross section is formed, and a hole into which two or more fingers can be inserted is formed substantially in the center of the main body.
A long hole that penetrates vertically is formed at both ends of the tip of the main body formed in a U-shaped cross section, a bolt is inserted through the long hole, and a nut is screwed into the bolt to form a U-shaped cross section. A groove is formed by the tip of the main body and the bolt so that the tool ridge can be fitted.The tool ridge is fitted in the groove and the tool is fixed by tightening the bolt, and the tool is fixed on the opposite side of the groove. A blade sharpener characterized in that a notch is formed at one end.

[0013]

The present invention constructed as described above has the following features:
In step 2, as shown in FIG. 1, the edge of the blade is sandwiched between the grooves, and in that state, the main body is sandwiched between the thumb and other fingers, and the blade surface A or B is applied to the grindstone to slide back and forth. In Claims 3 to 5, as shown in FIG. 6, the ridge of the knife is sandwiched in the groove, and in that state, the middle finger and the ring finger are inserted into the holes of the main body to grasp the main body, and the index finger and the little finger are attached on the main body.
The thumb is attached to the notch at one end of the side single part opposite to the side single part where the groove is formed, and the blade surface A or B is applied to the grindstone to slide back and forth.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in the drawings. An embodiment will be described with reference to FIGS. A sharpening tool having a groove 2 formed in a single side of a main body 1 on which a ridge of a kitchen knife can be fitted.

Since the blade sharpener having such a structure is used,
Fit the ridge of the knives into the groove 2, hold the main body 1 by hand and place the knives' blades on the grindstone, and apply force to the fingertips so that the knives blades hit the grindstone's upper surface strongly and slide in the direction of arrow G, that is, back and forth When you move
Since it slides with one hand, even an inexperienced person can keep the sliding direction constant with a little practice, and the blade surface can be polished to a mirror surface as described above.

A different embodiment of the present invention shown in FIG. 3 will be described. In the following description of the present embodiment, the same components as those of the above-described embodiment of the present invention will be designated by the same reference numerals and will not be described.

Next, a different embodiment will be described with reference to FIG. The main difference from the embodiment of the present invention is that the lower protrusion 2a formed by the groove 2 is a short protrusion 2b. When the blade is fitted into the groove 2 and the blade surface is applied to a grindstone to sharpen, the peak of the blade is pressed only to the tip of the upper protrusion and the base end of the lower protrusion 2a. Has a short projection 2b, which is sufficiently functional, and the short projection 2b makes it easier to fit the ridge of the blade. (Figs. 11 and 12
reference)

Next, a different embodiment will be described with reference to FIG. The main difference from the embodiment of the present invention is that a hole 3 into which two or more fingers can be inserted is formed substantially in the center of the main body 1.
Grooves 2c and 2d that can fit the ridge of a knife are formed on both side single parts, and notches 2e and 2f are formed at one ends of the grooves 2c and 2d. 4 is formed.

As described above, since the hole 3 into which two or more fingers can be inserted is formed substantially in the center of the main body 1, the main body 1 can be firmly gripped, and at the same time, sufficient force can be obtained with one hand when sharpening the blade surface. It was put in and sharpened, and the sliding direction was stable. Since the notch 4 is formed at one end of the single side portion of the main body 1, the effect of the hole 3 is further enhanced when the thumb is attached to the notch 4.

The groove 2 can also be formed in any one of the plurality of side portions of the main body 1. Therefore, it is also possible to form a polygonal main body 1 such as a hexagon or an octagon, and form an arbitrary number of grooves 2 in a single portion on any side thereof. Furthermore, it is also possible to form two grooves 2 in one side single part of the main body 1 so that the side single part has a mountain-shaped cross section. Notches 2e, 2 are provided at one end of the grooves 2c, 2d.
Since f is formed, the cutting edge of a sharp knife such as a willow knife can be easily sharpened.

Next, a different embodiment will be described with reference to FIG. The main difference from the embodiment of the present invention is that the main body 1 is a main body 6 having a U-shaped cross section, and vertically elongated slots 7a and 7b are formed at both ends of the tip end of the main body 6 having a U-shaped cross section. The bolts 8a and 8b are inserted into the long holes 7a and 7b, the nuts 9a and 9b are screwed to the bolts 8a and 8b, and the tip of the main body 6 having a U-shaped cross section and the bolts 8a and 8b are used to make a knife. The groove 10 which can fit the ridge is formed, the ridge of the tool is fitted in the groove 10 and the tool is fixed by tightening the bolts 8a and 8b, and the elastic body 11 is provided between the main bodies 6 having a U-shaped cross section. And a notch 12 at one end of the side unit opposite to the groove 10.
Is formed.

Since the blade sharpener having the above-described structure is used, the edge of the blade is sandwiched between the tip ends of the main body 6 having a U-shaped cross section, the positions of the bolts 8a and 8b are adjusted, and the nuts 9a and 9b are screwed. , Bolts 8 inserted through the long holes 7a, 7b
Since a and 8b are slidable, any blade having any shape of peak can be easily and surely fixed to the blade sharpener. The elastic body 11 in the present embodiment is
Although shown as a coil spring, it may be a leaf spring or an elastic body made of rubber, synthetic resin, or the like, regardless of the material and shape thereof.

FIG. 6 is a diagram for explaining a state in which a right-handed person holds the blade sharpener according to the present invention in his hand and sharpens the blade.
That is, a state in which two fingers, a middle finger and a ring finger, are inserted into the hole 3 in the center of the main body 1 and the knife sharpener is grasped, the forefinger and the little finger are attached to the upper surface of the knife sharpener body 1, and the notch 4 is attached to the thumb. Then, the ridge of the cutter C is fitted into the groove 2 of the side single portion of the main body 1, and the blade surfaces A1 and A2 of the cutter C are closely attached to the upper surface of the grindstone.
1. While applying a constant force to the tip of A1 and A2, slide the hand repeatedly in the direction G of the arrow, that is, back and forth. Since only the above operation is performed, even a beginner can easily and surely sharpen the blade of the blade. This state is shown in FIGS. 10 and 11, and the force applied to the blade C through the blade sharpener is concentrated at the tip of the blade C, so that even a beginner can easily and surely. You can sharpen the blade of a knife.

[0024]

When the blade sharpener according to the present invention is used,
The effects listed below can be obtained. 1) Since a groove that can fit the edge of the blade is formed on any single side of the main body, even if you do not have much experience, you can easily and reliably insert the edge of the edge into the groove. I can sharpen with one hand. Since it is sharpened with one hand, the contact surface between the blade surface of the blade and the grindstone does not swing, that is,
Since the hand is slid back and forth by applying a certain force to the tips of the forefinger, middle finger, and ring finger, the blade surface of the blade and the contact surface of the grindstone are in close contact with each other and are easily stabilized, and the blade surface can be polished to a mirror surface. Therefore, as described in the first embodiment, it becomes possible to sharpen a sharp blade.

2) Since the projection at the lower end of the groove is shortened, the projection at the lower end of the groove does not come into contact with the grindstone during polishing of the blade, and there is no useless frictional resistance, which facilitates sharpening.

3) Since a hole into which two or more fingers can be inserted is formed substantially in the center of the main body, the sharpening tool of the present invention is very easy to grip. That is, the middle finger and the ring finger are inserted into the hole, the knife sharpener is grasped by these two fingers and the thumb, and the index finger and the little finger are put on the upper surface of the knife sharpener, so that the effect of the above 1) is amplified.

4) A notch is formed at one end of the side unit opposite to the side unit of the main body having the groove, so that the tool sharpening tool is gripped as described above and the thumb is attached to the notch. ,
The effect of 3) above was amplified.

5) A body having a U-shaped cross section is formed, and vertically elongated slots are formed at both ends of the tip of the body formed to have a U-shaped cross section. Since the blade is fixed by screwing the nut onto the bolt and tightening the bolt, it is possible to easily and reliably fix the blade having any shape of the peak to the blade sharpener.

6) As a result of the effects listed above, when sharpening a blade with the blade sharpener according to the present invention, the force applied to the blade through the blade sharpener is concentrated only on the tip of the blade edge of the blade,
Since the force is not dissipated in vain, even a beginner can sharpen a blade easily and surely.

[0030]

[Brief description of drawings]

FIG. 1 is a perspective view showing a usage state of an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of an essential part showing an embodiment of the present invention.

FIG. 3 is an enlarged sectional view of an essential part showing an embodiment of the present invention.

FIG. 4 is a horizontal sectional view showing a usage state of the embodiment of the present invention.

FIG. 5 is a perspective view showing an embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a method of using the embodiment of the present invention.

FIG. 7 is an enlarged cross-sectional view of an essential part showing a state in which a blade is sharpened.

FIG. 8 is an enlarged sectional view of an essential part showing a state in which a blade is sharpened.

FIG. 9 is an enlarged explanatory view of a main part showing a sharpening direction of a blade.

FIG. 10 is a cross-sectional view showing a usage state of the embodiment of the present invention.

FIG. 11 is a cross-sectional view showing a usage state of the embodiment of the present invention.

FIG. 12 is a perspective view showing a conventional example, and the inside of the right circle is an enlarged cross-sectional view of a main part.

FIG. 13 is a perspective view showing a usage state of a conventional example.

FIG. 14 is an enlarged cross-sectional view showing a usage state of a conventional example.

[0031]

[Explanation of symbols]

1 is a main body, 2 is a groove, 2a is a lower protrusion, 2b
Are short projections at the bottom, 2c, 2d are grooves, 2e 2f
Is a cutout at one end of the groove, 3 is a hole into which two or more fingers can be inserted, 4 is a cutout at one end of a side single part of the main body, 6
Is a main body having a U-shaped cross section, 7a and 7b are elongated holes penetrating up and down the main body, 8a and 8b are bolts, and 9a and 9b are
Nut, 10 is a groove, 11 is an elastic body 11, 12
Is a notch at one end of the main body side. A1, A2 are blade surfaces, B, E, G are blade sliding directions, C is a blade,
D is a blade, F is a grindstone.

Claims (5)

[Claims] 1. A blade sharpening tool, characterized in that a groove into which a ridge of a blade is fitted can be formed in a single portion on an arbitrary side of a main body. 2. A blade sharpening tool characterized in that a groove into which a ridge of a blade is fitted can be formed in a single portion on an arbitrary side of a main body, and a projection at a lower end of the groove is shortened. 3. A main body is provided with a hole into which two or more fingers can be inserted, and a single part on any side of the main body is provided with a groove into which a ridge of a knife can be fitted, and a side opposite to the groove. A blade sharpener characterized in that a notch is formed at one end of a single part. 4. A main body is formed with a hole into which two or more fingers can be inserted, and a single part on any side of the main body is formed with a groove into which a ridge of a knife can be fitted, and the side opposite to the groove. A blade sharpening tool characterized in that a notch is formed at one end of a single portion, and a projection at a lower end of the groove is shortened. 5. A body having a U-shaped cross section is formed, a hole into which two or more fingers can be inserted is formed substantially in the center of the body, and the body having the U-shaped cross section is vertically penetrated at both ends thereof. A long hole is formed, a bolt is inserted through the long hole, a nut is screwed to the bolt, and a groove is formed that can fit the peak of the blade with the tip of the main body formed in a U-shaped cross section and the bolt Then, the tool sharpening tool is characterized in that the tool is fixed by fitting a ridge of the tool into the groove and tightening a bolt, and a notch is formed at one end of a side single part opposite to the groove. [0001]