JP5592322B2 - Sharpening tool - Google Patents

Description

  The present invention relates to a knife sharpening tool.

The sharpness of Kenting is said to affect the taste of cooking. However, even in ordinary households, knives cannot be cut unless they are sharpened once a month.
Recently, there are no sharpeners in the neighborhood, making it difficult to request sharpening. When transporting away, it is difficult and dangerous because it is a blade. The cost is usually 1000 yen or more and it usually takes 2 to 3 weeks.
On the other hand, the use of high quality Kenting, which is not suitable for poor sharpening, is also increasing.
In the kitchen, more frequent sharpening is necessary, but the chef is not necessarily a good sharpener, and the curve of the blade edge becomes concave for a long time, `` What is it like a professional to make such a knife? '' There seem to be situations that are accused.

  It is best to sharpen the kitchen knife with a flat whetstone. But it won't break if you don't do it the right way. There are nine important points to sharpening. Speaking of Western knives, 1 is to make the edge angle of the outside of the knife (the right side when holding the handle with the right hand) constant, such as 8-10 degrees or 15 degrees. 2 is to make the blade edge angle inside the knife (the left side when holding the handle with the right hand) constant, such as 5 to 8 degrees or 15 degrees. 3 is that the sharpening direction on the outside of the knife is approximately 45 degrees. 4 is that the sharpening direction inside the knife is approximately 90 degrees. 5 is not to put pressure on the fingertips. 6 is to grind in three or four times within the width of the grindstone on each side. 7 is not to sharpen too much. Especially sharpen the inside. 8 means not to break the curve of the cutting edge, and 9 means to take the blade back.

  Repeated sharpening increases the thickness of the margin and increases the cutting resistance. It is related to this that care must be taken not to over-grind by re-sharpening. If the thickened part becomes thicker, sharpen it. This is the work of thinning the blade with the image of cutting 1/3 of the blade side of the blade surface. To sharpen and grind, apply the sharpness of the knife's upper and lower surfaces to the grindstone and grind it.

  In addition, there are various skills in the craftsman area, such as various techniques to improve separation, but 9 points of reshaping are the basics in order to ensure the minimum sharpness.

  In order to cut the knife, it is necessary that not only the sharpness of the cutting edge but also a fine saw-tooth is formed on the cutting edge. The above points 3 and 4 are necessary for making a saw in the cutting edge. When the direction of the outer and inner grindstone scratches differs by approximately 45 degrees, it is the sawtooth that produces a fine jagged jagged shape with a peak at the edge that is the intersection. If the direction of the outer and inner scratches is the same, the blade edge will only have a deep wave and will not contribute to the sharpness. The sharper the sharper the finer the grindstone, the sharper the sharpness is achieved with a finish.

  With a tool (sharpener) sharpened parallel to the cutting edge, no saw marks are produced. Therefore, the sharpness of the cutting is reduced by several steps compared to the one sharpened with a flat grindstone. If you use a sharpener that is not appropriate for a long time, the angle of the blade will also be distorted, resulting in a round blade and damaging the knife.

  The most difficult of the 9 points to be sharpened is to keep the edge angles of 1 and 2 constant. A knife is not easy to hold. There are two types of surfaces to be sharpened, the outer side and the inner side, and the direction is 45 degrees and 90 degrees. It is necessary to divide each side into 3 to 4 times, the main body is thin, the blade edge is warped, It is curved, the peaks are curved, and it has a handle. If the pattern direction is matched when holding, the direction of the blade is reversed on the outside and inside. It takes considerable skill to hold a hard-to-hold object in a hand and to reciprocate stably with respect to the grindstone. If you sharpen it poorly, it will become a round blade or a round blade, the curve of the cutting edge will go wrong, and expensive knives will not last long.

  Many patents and utility models have been filed in the past for sharpening tools for knives. Most of them are sharpeners. A sharpener is simple, but emphasizes the sharpness of the cutting edge, and is a tool that impairs the effect of the saw line, another important element of sharpness. However, because Sharpener is easy to use, it has a high rate of commercialization and many valid patents.

  A tool that keeps the edge angle constant by sharpening a flat grindstone is a utility model publication (Patent Document 1) in 1964. A tool that simply fixes the angle is not novel. Nevertheless, a considerable number of inventions for tools that keep the blade angle constant have been filed. In patents, there are many deemed withdrawals, and in utility models, most of the rights are extinguished.

When we scrutinize the prior application of tools that keep the blade angle constant by sharpening a flat grindstone, there are few practical structures.
For example, the angle is certainly constant, but the difference between the outside and inside edge angles is not recognized.
For example, even if it is possible to adjust the angle corresponding to the difference between the outer and inner cutting edge angles and the type of knife, there is no guideline for adjustment, which is cumbersome and lacks reproducibility.
For example, even if it is possible to maintain a partial angle, it is necessary to reset it several times as a whole.
For example, the structure is complicated by the countermeasures because of fear of wear.
For example, it may be a large-scale device, which causes trouble in storage, cost, cleaning, usability in a narrow place, and the like.

The following five types of tools have been commercialized with tools that keep the blade edge angle constant by sharpening a flat grindstone.
There are Patent Document 2 and Patent Document 3 as few examples of patent establishment. This patent is also accompanied by design registration (Patent Document 4), and the rights are ongoing, and a product called minoSharp (registered trademark of Master Cut Rally Co., Ltd.) is sold.
Patent Document 5 is open to the public. This trading company sells an industrial diamond knife sharpener [Togikoroto]. Similar to other companies, Togistar Diamond is sold.
As a tool corresponding to Patent Document 6 under examination, a product called an ergo knife sharpener [shuttle] is sold.
Examples of tools that can be inserted into the back of a Kenting are shown in Patent Document 7 and Patent Document 8. Patent document 9 was issued in a later application to this, but it was not possible to make a right, and a product called Supertoguel protected by the design shown in patent document 10 and patent document 11 was on sale for 8 years in design right, Widely used in seed tools.
One of the features of what has been put to practical use among many ideas is that it has a design structure.

  On the other hand, I am aware of the blade edge angle of Kenting, but there are very few devices that pay attention to the curve of the blade edge. Although the description corresponding to the curve of a blade edge was seen in patent document 12, it is a complicated structure and it withdraws itself. Although patent document 13 mentions the curve of a blade edge | tip, it needs to be reattached each time.

  Since the blade edge of a knife is curved, it is not possible to use a straight tool to make the blade angle constant throughout. Since the product of Patent Document 11 has a linear shape, accurate sharpening cannot be expected throughout. Moreover, in order to insert in the back of a kitchen knife, the angle of a blade edge will differ with the size of a kitchen knife. In general, since the back of a knife is not parallel to the cutting edge, the conditions differ between the cutting edge and cutting edge, and the cutting edge angle is not constant. There is also a limit of 3mm in the thickness of the knife that can be inserted. As a simple tool, it is very convenient and design, but the sharpening finish is still one. The product of Patent Document 14 is the same, such as a product (Patent Document 5) that is sharpened with a sharpening tool with a knife fixed to a table (Patent Document 5), a product that is guided by a rail (Patent Document 6), and the like along the cutting edge curve. The cutting edge angle cannot be made constant.

  The curve of the blade edge of the knife and the angle of the blade edge vary widely depending on the manufacturer and application. The length, width, and thickness of the Kenting vary widely depending on the manufacturer and application. Some are double-edged and some are single-edged. The angle of the edge of a double-edged knife is generally different between the outside and inside, and there is also a difference in the sharpener style. Considering these conditions, most of the prior applications are difficult to handle, need to be replaced many times, are troublesome to install and adjust, have problems with reproducibility, and cannot be installed. To do.

  Most of the devices that can be freely adjusted to the desired edge angle are also troublesome to adjust and have problems with reproducibility. Japanese Patent Application Laid-Open No. H11-228707 discloses an idea in which the mark of the blade edge is marked in consideration of reproducibility. There is Patent Document 12 as an idea in which atari pins are provided in consideration of reproducibility. Patent Document 5 is a screw for the base leg, and Patent Document 6 can change the angle by exchanging the pad of the fixed part, but it is inconvenient to change the blade angle between the outside and inside. If the situation changes, it will be necessary to change the adjustment whenever necessary.

Japanese Utility Model Publication No. 06-005144 Japanese Patent No. 3968101 Japanese Patent No. 4436385 Design registration No. 1246732 JP 2010-260160 A JP 2008-260095 A Japanese Utility Model Publication No. 60-157171 Japanese Utility Model Publication No. 63-009416 JP 09-225842 A Design registration No. 1214859 Design registration No. 1214723 JP 2004-283920 A JP 2009-12160 Design registration No. 1346367 Japanese Patent No. 3640399 Japanese Patent No. 4104731

The present invention is a re-sharpening tool having the following advantages A to O that can faithfully realize the nine basics regarding the correct sharpening method when sharpening a knife with a flat grindstone.
A has a constant cutting edge angle at any position of the cutting edge of the curve.
B can correctly maintain the cutting edge curve.
C can be easily set to the target edge angle.
D can also set the angle of the outside and inside of the Kenting individually.
E can sharpen the entire blade span with a single attachment without reattaching.
F can be done with a single attachment without reattaching the outside and inside sharpening.
G can be performed continuously with one installation without reattaching any of the steps of rough sharpening, medium sharpening, finishing sharpening, blade return removal, sharpness confirmation, and correction sharpening.
H also corresponds to the difference in the length of the Kenting.
I corresponds to the difference in the width of the knife.
J can also be used for wide-width Kenting.
K also corresponds to the difference in thickness of the Kenting.
L can be easily attached and detached.
M does not damage the Kenting.
N is design.
O is easy to clean, dry and clean, and does not take up space for storage.

  In the present invention, as shown in FIG. 1, a plurality of chips 13 with little wear are projected and fixed side by side on an upper surface 11 of a flexible base 10 having at least a lower surface 12 that is adhesive or adsorbable or both. This is a strip-shaped sharpening jig U01. Stickiness and adsorptivity can also be collectively referred to as surface wear. Since the lower surface 12 of the jig U01 of the present invention has adhesiveness and adsorptivity, it can be adhered and firmly fixed to the front surface 21 and the back surface 22 of the knife U02 as shown in FIG. Since the plurality of chips 13 are made to have a predetermined height 14, the blade edge angle 25 of the knife U02 is uniquely determined by the distance 24 from the blade edge 23. As shown in FIG. 3, by placing the distance 24 from the principal points P02A, P02B, P02C, P02D, etc. of the cutting edge curve 23 of the knife U02 to the tip 13 of the jig U01 of the present invention, flexibility is ensured. The strip-shaped jig U01 can be temporarily placed by drawing a smooth curve C01 passing through a point at a fixed distance from a plurality of measurement points P02A, P02B, P02C, P02D, and the like. When the position is determined, the surface of the jig U01 of the present invention is pushed and firmly adhered and fixed to the surface 21 of the knife U02. In the case of a double-edged knife, when the outer side 21 of the knife is attached, another jig U01B of the present invention is attached to the inner side 22 of the knife U02 in the same manner as shown in FIG.

  As shown in FIG. 4, on the flat grindstone U03 previously sucked with water, the outside 21 of the knife U02 on which the jig U01 of the present invention (not shown) is mounted is placed in a direction of about 45 degrees, and the cutting edge 23 of the knife U02 and Place your finger lightly between the tip 13 (not shown) of the jig U01 of the present invention, and divide it from the blade base to the cutting tip into about 4 locations, 23A, 23B, 23C, 23D, etc., about 10-30 reciprocations per location, Sharpen to slide. The sharpening of the outer side 21 is finished once if the entire blade is sharpened.

  In the case of a double-edged knife, as shown in FIG. 5, the inner side 22 of the knife U02 equipped with the jig U01B of the present invention is placed on the grindstone U03 in a direction of approximately 90 degrees, and the cutting edge 23 of the knife U02 and the jig U01B of the present invention Put a finger lightly between the chips 13 (not shown), and divide the blade from the cutting edge to the cutting edge into four places, 23A, 23B, 23C, 23D, etc., and sharpen it lightly so as to slide the blade back. If the entire blade is turned outwards, the inner sharpening is finished.

  In the case of a single-edged knife, the jig of the present invention is not mounted on the inside. Place the inner side 22 of the knife U02 without the jig of the present invention on the grindstone U03 in a direction of approximately 90 degrees, place a finger lightly on the blade edge of the knife U02, and divide the blade edge to the cutting edge into about four places. Then, sharpen it lightly so that it slides to the extent that it takes a blade back. If the entire blade is turned outwards, the inner sharpening is finished.

The blade 23 is applied to the back of the wooden base 31 of the grindstone U03 and gently pulled to remove the blade return.
If the blade 23 is lightly applied to the nail and caught, the sharpening of this step is completed. If the sharpening is incomplete, repeat the above sharpening process once again.
The grinding process described above is performed by changing the roughness of the grindstone as necessary.

When all the steps are completed, the jig U01 of the present invention is removed from the knife U02, and the knife U02, the jig U01 of the present invention, and the grindstone U03 are washed with water, wiped with a cloth, and dried.
When the fixture U01 of the present invention is fixed by a disposable double-sided tape, the used double-sided tape is peeled off and a new double-sided tape is attached.
In the case where the jig U01 of the present invention is self-adhesive or adsorbable by a micro suction cup, it may be washed with a neutral detergent as necessary in order to recover the adhesiveness or adsorbability.

It is even better if the jig of the present invention can be set at a position away from the cutting edge which is easy to sharpen at any cutting edge angle.
For example, in a knife having a thickness of about 1.6 mm, when the dimension of the jig is determined so that the distance from the cutting edge is 10 mm at a cutting edge angle of 10 degrees, the cutting edge angle is 15 degrees. The distance is 6.6 mm. Some people may find it difficult to keep the angle with this dimension.
In such a case, as shown in FIG. 6, an underlay U04 may be prepared as an accessory of the jig of the present invention.
The lower surface of the underlay U04 is made sticky and adsorbable. The underlay U04 has appropriate flexibility in the thickness direction, but need not be flexible in the width direction, and preferably has a shape somewhat larger than the jig of the present invention.
After an underlay U04 having a desired blade edge angle and an appropriate distance from the blade edge is affixed and secured to the knife U02, the jig U01 of the present invention is set in accordance with the shape of the blade edge 23 by the method described above. In this case, the attachment position of the jig U01 of the present invention can be set to have a larger distance 24 from the blade edge 23 than when it is directly attached to the knife U02.
In this way, the standard inventive jig U01 can be adapted to a wide range of cutting edge angles 25.
It should be noted that the underlay U04 does not have to be a single sheet, and may be used in a plurality of layers.

Even when the width of the knife is extremely narrow, if the underlay U04 is used, the fixing area of the jig U01 of the present invention can be widened to increase the fixing force.
In addition, even in the case where the cut edge has a long shape, if the underlay U04 is used, the portion corresponding to the cutting edge of the jig of the present invention can also be widened to increase the fixing force.

  As shown in FIG. 7, an extremely long knife U02 can be dealt with by arranging a plurality of jigs U01 of the present invention side by side.

  As shown in FIG. 8, in the knife U02 having a large blade thickness, the angle 26 offset by the thickness can be subtracted and corrected from the desired blade edge angle 25 to match the desired blade edge angle.

As for the flexibility of the base 10 of the jig U01 of the present invention, it is preferable to have an appropriate hardness because it is easy to handle.
Also, since it is easy to attach and detach, it is easier to use if it is not an excessively strong peeling force, but the base 10 has an appropriate bending rigidity so that the peeling force due to turning up does not work during the sharpening operation. Preferably it is.
The degree of flexibility can be adjusted by selecting the width and thickness of the base 10 and the hardness of the resin.

The adhesiveness of the base 10 of the jig U01 of the present invention can be realized by using a disposable double-sided adhesive tape. However, when a self-adhesive resin is used or a resin sheet having a micro sucker adsorbing property is used. It is preferable because it can be used repeatedly only by washing and drying.
The self-adhesive resin or the suction sheet of the micro sucker has a very large resistance in the sliding direction and is very suitable for fixing the jig of the present invention.
In this case, the entire base 10 of the jig U01 of the present invention may be made of a self-adhesive resin.
Alternatively, only the lower surface 12 of the base 10 of the jig U01 of the present invention may be adhesive or adsorptive, and the upper surface 11 may be a general-purpose resin.
Alternatively, the base 10 of the jig U01 of the present invention may be made of a general-purpose resin, and a double-sided tape or the like having one side self-adhesive or micro-suction cup adsorbing may be attached to the lower surface 12 of the base 10.
The force in the peeling direction of the self-adhesive resin can be adjusted by selecting the self-adhesive resin material (Patent Document 15).
An example of a method for producing a suction sheet for a micro suction cup is disclosed in Patent Document 16.

As shown in FIG. 9A, the wear-resistant tip 13 used in the jig U01 of the present invention can have any shape such as a sphere, a chevron, a plate, a bar, or the like.
As shown in FIG. 9B, the wear-resistant tip 13 can be replaced by providing the mounting hole 14 in the base 10 of the jig U01 of the present invention and inserting and fixing the wear-resistant tip 13. .
At this time, if the upper and lower surfaces of the wear-resistant chip 13 can be used, the usage period of the chip 13 can be doubled by switching the upper and lower sides.
At this time, if the cross section of the wear-resistant chip 13 is circular, polygonal or rectangular, the period of use of the chip 13 can be further extended by rotating the chip 13.
At this time, it is more preferable that the mounting hole 14 of the base 10 and the chip 13 are engaged with each other by the protrusion 15 and the groove 16 because the mounting of the chip 13 becomes stable.

The jig of the present invention can be positioned using a general-purpose ruler, but it is convenient to use a dedicated length gauge U05 as shown in FIG.
If a plurality of length gauges U05 are previously attached to the jig U01 of the present invention, the positioning operation becomes simple. The length gauge U05 has a circular scale 51 corresponding to the edge angle on a transparent plate. In addition, a hole 52 that fits into the chip 13 is formed at the center of the arc. The rear end is provided with a knob 53 by bending for easy removal.
At this time, if at least a part of the upper surface 11 of the jig U01 of the present invention is also provided with adhesiveness or adsorptivity, the attachment of the cage U05 is stable and preferable.
Alternatively, as shown in FIG. 10B, there is a method using a dedicated angle gauge U06 that defines the position from the height of the head of the chip 13.
Various other shapes for the cage can be devised.

Since the present invention has a flexible belt shape, it can be deformed and mounted in accordance with various blade shapes, so that the same blade edge angle can be maintained anywhere in the blade edge curve.
Since the present invention can be mounted along the shape of the cutting edge, it is easy to avoid sharpening that causes the cutting edge curve to go wrong.
Since the present invention can be mounted so as to consciously correct the cutting edge shape, it is also possible to correct a cutting edge shape that has gone wrong due to past sharpening.
In the present invention, the outer and inner jigs of the knife are separate and can be mounted independently, so that the outer and inner cutting edge angles can be arbitrarily set separately.
Since the present invention can be mounted at any position on the knife, the edge angle can be set to a desired value.
In the present invention, since the blade edge angle is determined only by the distance between the blade edge and the jig, it can be easily set using a dedicated length gauge or the like.
In the present invention, the distance between the cutting edge and the jig tip can be, for example, 10 mm or more, compared to the conventional hand sharpening in which the cutting edge surface having a width of only about 0.2 mm is in close contact with the grindstone. By simply sliding the knife on the grindstone, even an unskilled operator can sharpen at a correct angle.
In the present invention, since the outer and inner jigs of the knife can be formed in the same shape and size, the manufacturing cost is low, there is no fear of erroneous mounting, and the diversion is high.
Since the present invention is a long one that can be mounted along the shape of the blade edge, sharpening of the entire blade span can be performed by one mounting without remounting.
In the present invention, the outside and inside jigs of the knife are separated and can be attached independently, so that the outside and inside sharpening can be performed once without reattaching.
Since the present invention is in the form of a thin strip, there is no hindrance to work, and any steps of rough sharpening, intermediate sharpening, finishing sharpening, removal of blade return, sharpness confirmation, and sharpening correction are not reattached. It can be performed continuously with one installation.
The present invention can be mounted in a plurality, so that it can cope with various lengths of kending.
In the present invention, the outside and inside jigs of the knife are separated and can be mounted independently, and the mounting position that determines the edge angle is determined by the distance from the edge curve, so it corresponds to various widths of the kitchen knife. Can do.
Unlike the tool that is installed across the back of the Kenting, the present invention has separate jigs on the outside and inside of the Kenting and can be attached independently, so it can be used on any wide Kenting. it can.
The present invention is different from a tool that is attached with the back of the Kenting in between, and the jig on the outside and inside of the Kenting is separate and can be attached independently, so it can be used regardless of the thickness of the Kenting .
In the present invention, since the mounting position for determining the blade edge angle is determined by the distance from the blade edge curve, it can be corrected by the distance, and the blade edge angle can be set to an accurate value regardless of the thickness of the knife.
In the present invention, since the surface of the knife hits the adhesive or adsorptive resin, an appropriate frictional force works even if it is temporarily placed, and the adjustment position does not shift. Further, the temporary placement position can be easily moved and adjusted.
According to the present invention, when the distance between the cutting edge and the jig is adjusted to a predetermined length and temporarily placed at several positions on the cutting edge curve, the jig can be temporarily placed at an appropriate position with the flexibility of the jig. .
In the present invention, the temporarily placed jig can be easily stuck and fixed by pressing strongly against the surface of the knife.
The adhesive or adsorptive resin used in the present invention has a very large resistance to lateral movement, and there is no change in the fixing force as long as the outside gets wet, and the mounted jig does not slip. Moreover, since moderate resistance can be given to vertical peeling, it is very easy to attach and detach by pushing and sticking, and lifting and peeling from the end.
In the present invention, since the knife touches a soft adhesive or adsorptive resin surface, the surface of the knife is not damaged.
The present invention can be used repeatedly only by washing and drying, by making the adhesiveness of the surface to be attached self-adhesive or adsorbing the micro sucker, or both.
Since the present invention has a simple belt-like shape, washing, wiping and drying are easy, and there is no space for storage.
In the present invention, since the portion corresponding to the grindstone is made of a wear-resistant chip, it can be used for a long time.
The present invention can be used for a longer time by making the tip corresponding to the grindstone a replaceable structure.
The present invention can be used as a design tool in the form of a strip, the curve of a surface, the shape of a chip, the number of chips, the color of a material, the arrangement of a logo mark, and the like.
Since the present invention can sharpen accurately with a light force, it can be sharpened in a small number of times, making the knife and grindstone last longer, shortening the operation time, reducing the frequency of polishing and reducing the conventional sharpening work The feeling of burden changes rather to the pleasure of sharpening.
Since the present invention is a tool that clears all nine points of the re-sharpening technique using a flat grindstone, it can sufficiently withstand the use of not only the home but also the craftsman who specializes in cooking.

FIG. 1 is a perspective view showing the structure of a jig according to the present invention. FIG. 2 is an explanatory view of a state in which the jig of the present invention is attached to the outside and inside of the knife. FIG. 3 is an explanatory diagram showing how the jig of the present invention is attached along the cutting edge curve of the knife. FIG. 4 is an explanatory diagram when sharpening the outside of a knife equipped with the jig of the present invention. FIG. 5 is an explanatory diagram in the case of sharpening the inside of a knife equipped with the jig of the present invention. FIG. 6 is an explanatory view of a state in which the jig of the present invention is attached to a knife using an underlay. FIG. 7 is an explanatory view of a state in which two jigs of the present invention are mounted side by side on a long knife. FIG. 8 is a diagram for explaining the correction of the angle when the jig of the present invention is attached to a thick knife. FIG. 9 is a diagram for explaining an example of the chip shape of the jig of the present invention, an example of a replaceable chip, and an attaching method thereof. FIG. 10 is an explanatory view showing an example of a convenient cage for use in positioning the jig according to the present invention. FIG. 11 is an explanatory diagram of the jig of the present invention that was prototyped in the initial stage. Example 1 FIG. 12 is an explanatory view of a preferable state of the jig of the present invention selected from many prototypes. (Example 2) FIG. 13 is an explanatory view of a jig according to the present invention corresponding to mass production. (Example 3)

  In Example 1, an example of the jig of the present invention that was made by hand as an initial trial is disclosed. In Example 2, a number of hand-made prototypes of the present invention that are preferred from the present invention are disclosed. An example of the jig of the present invention corresponding to mass production is disclosed in Example 3.

The embodiment of FIG. 11 is a front view (A) and a cross-sectional view (B) of the jig of the present invention that was prototyped in the initial stage.
The lower part of the base was manufactured by cutting a silicone wrap having a hardness of 5 degrees. The smooth surface of the silicone wrap is self-adhesive, and the other surface has a number of small protrusions that prevent adhesion. The thickness including the ledge is about 1 mm.
The base was an arc-shaped strip having a length of 150 mm, a width of 20 mm, an outer diameter of 500 mm, and an inner diameter of 480 mm.
The ceramic cutter blade was cut with a diamond cutter to produce seven square plate-like chips. The thickness of the chip was 1 mm, and the width and length were 5 mm.
Seven chips were bonded and fixed at a position 2 mm from the end of the base with a tip height of 1.5 mm and an angle of about 5 degrees, with a pitch of 21.5 mm. The adhesive used was mainly composed of an acrylic-modified silicone resin compatible with silicone corn rubber.
The top surface of the silicone wrap was thickened by applying the same adhesive to increase the thickness.
When sharpening the outside of the knife, the tips of each chip were pasted so that the tip was 11 mm from the cutting edge curve. When sharpening the inside of the knife, each tip was attached so that its tip was 14 mm from the cutting edge curve. The blade angle is assumed to be 10 degrees and 8 degrees, and angle correction based on the thickness of the portion where the knife is attached is also considered.

As a result of re-sharpening, Shinogi entered along the cutting edge curve, and the sharpened surface reflected light and shined uniformly when observed with a loupe, resulting in a flat finish. The sharpness is also good.
However, although the base material is reinforced with an adhesive, the base is a rubber with a hardness of 5 degrees, and the adhesive is also in a soft rubber state and is still too soft. Moreover, although the slip resistance of the silicone wrap was sufficiently strong, it felt that the peeling force was a little weak. Since the used chip is thin, there is a part where the modified silicone resin part of the adhesive is close to the top of the chip due to the problem of accuracy by handmade, and when the sticky resin part directly touches the grindstone, a phenomenon of turning up occurs.
The tip is made of a Forever ceramic cutter blade. The corner wear was negligible enough to discriminate when reflecting light.
The self-adhesion of the silicone wrap recovered after washing with water with a neutral detergent and withstanding reuse.

The embodiment of FIG. 12 is a front view (A) and a cross-sectional view (B) of one preferred example from among the jigs of the present invention that have been subjected to many trial tests.
The base was made by cutting a soft PVC transparent sheet to be hung on a table or the like. An arc-shaped strip having a thickness of 1 mm, a length of 150 mm, a width of 20 mm, an outer diameter of 500 mm, and an inner diameter of 480 mm was used.
A ceramic sharpener with a diameter of 12 mm was cut to a diameter of 5 mm with a diamond tool and cut to a height of 1.8 mm with a diamond cutter to produce four cylindrical chips.
In the base, four round holes were made at a position 5 mm from the outer diameter with a punching punch having a pitch of 40 mm and a diameter of 5 mm.
The chip was fixed by being pushed into a round hole in the base so that the bottom surface was flat.
On the lower surface of the base, a double-sided adhesive tape having a width of 15 mm and a back surface of a normal adhesive material and a surface of a self-adhesive material was attached. Since the base material of the double-sided tape is a polyester film and does not stretch, it was cut to a length of 20 mm and attached in parallel so that the base was flexible and not wrinkled.
When sharpening the outside of the knife, the tips of each chip were pasted so as to be 12 mm from the cutting edge curve. When sharpening the inside of the knife, each tip was attached so that its tip was 15 mm from the cutting edge curve. The blade angle is assumed to be 10 degrees and 8 degrees, and angle correction based on the thickness of the portion where the knife is attached is also considered.

As a result of re-sharpening, Shinogi entered along the cutting edge curve, and the sharpened surface reflected light and shined uniformly when observed with a loupe, resulting in a flat finish. The sharpness is also good.
The hardness of the base is moderate, and the self-adhesive peeling force of the double-sided tape used is moderate.
The chip is made of Cera Sharpener CS-10. Since it is a ceramic as a grindstone, its eyes are a little rough and wear is larger than the ceramic cutter blade of Example 1, but it is not so durable that it cannot be used. In addition, since the tip is cylindrical, it can be used nearly 10 times longer than a fixed tip by rotating and upside down.
The peelable double-sided tape used was an acrylic / urethane adhesive, and the self-adhesive surface recovered after washing with water with a neutral detergent and was able to withstand reuse.

  In addition, the length cage illustrated in FIG. 10A was made with a pet sheet and tried. It is very convenient. It is easier to use an integrated structure as shown in FIG. 13C than a rose as shown in FIG.

  The inside area of the small and long cutting edge has a small cutting area, so I tried using an underlay with a thickness of 1 mm. The material was polypropylene, and a double-sided tape that could be peeled off was used on the lower surface. At this time, the distance from the blade edge to the tip was 22 mm. It is easy to use because it is firmly fixed.

  Among many prototypes, ceramic balls are not available, and some use stainless balls. The stainless steel ball wears quickly, and the wear-resistant tip seems to be ceramic.

After a number of sharpening tests, Kenting of Kenting retreated. So I sharpened it. The sharpening was done with the image of scraping 1/3 of the blade surface, using a rough whetstone until it was almost gone.
The jig of the present invention was attached again, and sharpening was performed only with the finishing grindstone. At this time, the outer sharpening was only 5 round trips, and the inner sharpening was done only a few times to make a sharp sharpening. Shinogi enters like a thread along the cutting edge curve. This result is very similar to the same type of sharpening done by a professional sharpener. I feel like the taste of the vegetables cut without heart is good.
Resharpening should be done as lightly as possible. When the second and third times are overlapped, if the previous sharpening and the cutting edge angle are exactly the same, the sharpening will be lighter, the knife and the grindstone will last longer, and the work load will be less.

The example in FIG. 13 is an example of a mass production jig according to the present invention that is planned based on the result of Example 2. (A) is a front view, (B) is a sectional view, and (C) is an accessory.
The base is made of urethane hard rubber with a mold.
The base dimensions are an arc-shaped strip having a length of 150 mm, a width of 20 mm, an outer diameter of 500 mm, and an inner diameter of 480 mm. The outer diameter part is thin, the inner diameter part is a little thicker, and the corners on the upper surface are appropriately rounded.
Ten round holes with a diameter of 5 mm are provided at a position 5 mm from the outer diameter of the base. In the middle of the round hole, a protrusion that engages with the groove of the chip is provided.
A thin layer of urethane-based self-adhesion is provided on the lower surface of the base. It can be made by a method such as casting or bonding hard rubber on the self-adhesive sheet. The thickness is preferably about 0.2 mm. According to the method of Patent Document 16, when a soft urethane-based self-adhesive resin layer is formed on an embossed release sheet and a hard resin layer is overlaid thereon, the adsorption of the micro sucker is taken into account for self-adhesion. Is also possible.
The chip is a ceramic cylinder having a diameter of 5 mm and a height of 1.8 mm, and a groove that engages with the protrusion of the hole in the base is provided at a height of 0.9 mm. The number is 10, and it is fixed by being pushed into the hole of the base. Small rounded corners are provided at the corners of the top and bottom of the cylindrical tip so as not to damage the protrusion of the hole in the base when pushing. The ceramic is preferably non-porous and dense.
Two jigs of the present invention are set. Two pieces have the same shape and size.
Accessories include two underlays, a length cage of one for standard, one for underlay, and a draining sponge or case as required.
From the results of Example 1 and Example 2, it is clear that good results can be obtained as a sharpening tool, and the attractiveness as a product at a reasonable price can be fully exhibited by applying design. .

The detailed configuration and structure are not limited to the examples described here.
For example, the shape of the base is not limited to an arc but may be a straight line.
An appropriate core material may be placed on the base.
Contrary to FIGS. 9 and 13, the base hole and the protrusion provided in the chip and the groove may be provided in the hole and the protrusion in the chip.

Adhering to the nine basics of flat grinding stone re-sharpening technology, it can be applied to sharpening a knife.
It can be applied not only to sharpening but also to sharpening blades with a small cutting edge area.
Moreover, it can be used not only for a flat whetstone but also for a file-shaped sharpening tool.

U01 Jig U02 Kenting U03 Flat Whetstone U04 Underlay U05 Length Gauge U06 Angle Gauge 10 Base 11 Base Top 12 Base 14 Tip Height 15 Protrusion 16 Groove 21 Kenting Outside 22 Kenting Inner side 23 Cutting edge 24 The distance from the cutting edge to the tip 25 The cutting edge angle 26 The angle offset by the thickness of the knife P02 The main point of the cutting edge curve 31 The grindstone base 51 Scale 52 Hole 53 Knob

Claims (1)

At least the bottom surface is a band-shaped jig in which ceramic chips protrude and are arranged and fixed on the top surface of a flexible base in the width direction, which is sticky or adsorbable, and the tips are equidistant from the curve of the cutting edge. A jig for sharpening blades, characterized by bending the base in the width direction and sticking it to the surface of the blade.