JPS58181551A - Device for whetting cutter - Google Patents

Abstract

PURPOSE:To set a proper angle of whetting for high sharpness in a device for whetting a kitchen knife or the like at a fixed angle, by providing a restriction member which bears the back of the kitchen knife or the like being moved back and forth and by enabling the adjustment of the distance between the restriction member and a whetstone. CONSTITUTION:A hose 31 is connected to a faucet to supply a water sprinkler 30 with water little by little. A cutter is moved back and forth in the longitudinal direction of the cutting edge while the back of the cutter is placed on a support 1, a side of the cutter is borne by a restriction member 25, the cutting edge located at the upside is placed on the surface 19 of a whetstone and the cutter is twisted. To change the distance between the restriction member 25 and the surface 19 of the whetstone depending on the kind of the cutter or its size, the support 1 is elevated against a spring 10, a part 2 for holding by engagement is disengaged from an engaging part 4, a pin 6 is slid in a slit 5, the support is moved forward or backward and the holding part 4 is engaged with the engaging part 2 in a desired position.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a knife sharpening tool that is easy for an amateur to use when sharpening a knife in a private garden or the like.

Generally speaking, the sharpening process is performed by dripping a sharpening liquid (e.g., oil, water, etc.) onto the whetstone, holding the knife diagonally, and moving the edge of the knife back and forth. When it comes to sharpening, a technique is required to hold the blade at a constant angle with respect to the whetstone surface. If you are an expert in a certain field, such as a carpenter, you cannot afford to slow down because you have been skilled for a long time.
If this is done by an amateur, the holding angle of the knife relative to the abrasive surface will be irregular due to the excessive movement back and forth, resulting in what is commonly known as a "round blade", which will actually impair the sharpness of the blade, so it is best to have it done by a professional. Then, it will have to be re-sharpened. Therefore, some simple sharpening tools for sharpening double-edged objects, such as Nakiri hocho for home use, have already been developed. and n are clamping tools having abrasive surfaces facing each other, which grip the blade between them, and operate the blade in the longitudinal direction of the blade edge while holding the blade. With this method, the angle of the abrasive surface remains almost constant, and if the angle of the edge of the blade is large, it will not be possible to sharpen, and if the angle of the edge of the blade is small, the angle of the abrasive surface will be reached during the sharpening process. Since it is corrected to an obtuse angle, it may not be necessary to use it depending on the type of knife.

If the clamping pressure is increased in order to bite and clamp the blade, the frictional resistance applied to the blade will require a considerable amount of force to pull the blade out.
If the clamping pressure is reduced, substantially uniform sharpening will not be possible.

As a result of a detailed study of the sharpening operation of cutlery, we found that even an amateur can easily sharpen a knife according to the angle of the edge of a cutlery, and it is easy to operate. This is an attempt to sharpen a certain type of knife.

Hereinafter, this issuing BA will be specifically explained based on the illustrated example of M. In the figure, the synthetic resin receiver with reference numeral 1#i is a stand, which is L-shaped, and is equipped with a serrated holding part 21 on the underside, and an inverted-shaped sharpening tool. It is detachably held in a serrated engagement part 4 provided on the base part of the main body 3.
ing. Slide slits 5 are bored on both sides of the pedestal of the sharpening tool body 3, and a slide bin 6 is inserted into the slit. The slide bin 6 is mounted on a hinge arm 7 provided on the horizontal extension s of the stand 1.

Further, a slit 8 parallel to the slide slit 5 is bored in the horizontal extension part, into which a set screw 9 is inserted with a coil spring 10t interposed therein. It is screwably screwed into a screw hole 11 bored in the pedestal of the holder. A dovetail groove 12 is vertically formed on the upright wall of the sharpening tool main body 3, and a support block 13 that can slide vertically on the VCVi is inserted therein.

13 support blocks, 1 groove groove from the back of the upright wall.
It is held by a frictional force with a set screw 14 screwed into a screw hole penetrating through the inside of 2. The support block 13 has support arms 15 and 16 extending vertically, and the lower support arm 1
A square hole 17 is formed in the lower support arm 16 of 5.
A pivot hole 18 is bored in the. In the pivot hole 18,
A pivot shaft 20 provided at the upper end of the whetstone 19 with a square cross section is rotatably pushed by the VC9, and is located at the lower end of the whetstone 19.
A square shaft 21#'i integral with the pivot shaft 20, - the square hole 1
It is inserted into 7 freely. The square shaft 21 and the square holes 17 have a square cross section and are designed so that they can be fitted into each other when the grindstone 19 is rotated at a phase of 90 degrees. A compression coil cylinder 22 is interposed between the grinding wheel 19 and the support arm 16 to maintain the fitting of the square shaft 21 into the square hole 17.

The above-mentioned grindstone 19 has grindstone pieces 19a, 19b, 19c, and 19d each having a trapezoidal cross section with chamfered corners and fixed with an adhesive 23 with the above-mentioned pivot shaft 20 as a central axis.
The grinding surface 24 of each of the grindstone pieces 19a to 19d is adjacent to each other.
m1% 24b% 24c and 24d are combined at right angles to each other. For example, the grindstone pieces 19a to 19d are made of a grindstone material having coarse, medium, fine, and extremely fine grain sizes in accordance with the procedure of the grinding operation. Further, the receiver stand 1 is provided with an L-shaped regulating member 25 at the corner of the L-shape.

The above-mentioned regulating member 25 is fixed by being sunk 11ft downward into a groove 26 provided on the base 1.

Further, in this embodiment, the sharpening tool is mounted on a sharpening stand 27. The sharpening mount 27ii' has an edge 29 for receiving a sharpening tool around the flat pedestal part 28, and is positioned above the grindstone 19 at 9 o'clock with the sharpening tool attached.
The water spray member 30 is equipped with a water sprinkling member 30. This water sprinkling member 30 has a trap to which a water pipe faucet can be connected via a hose 31.

The water sprinkling member 30 has a slit 32 for dripping.
is worn.

Next, the manner of use of the sharpening tool of the present invention will be explained.

First, the hose 31 is connected to a faucet, and water is supplied to the water sprinkling member 30 little by little. As seen in the cutler F1g4 diagram,
The back part of the receiver is placed on the table 1, and the regulating member 25 supports the @ part, and while the upper edge of the blade is applied to the abrasive surface, it reciprocates in the longitudinal direction of the blade edge while applying twist in the direction of the arrow. In this case, the vertical force applied to the cutter is applied by the holder vertically downward with respect to the stand l.

Therefore, only the twisting force becomes the contact pressure against the edge of the blade, so the lp friction force of the sharpener applied to the blade is small and stable. Further, since the gap between the abrasive surface and the regulating member 25 is set as desired, the blade edge contacts the abrasive surface at an angle θ. If the twisting force is lost, the edge of the blade moves away from the abrasive surface and no sharpening is performed. Therefore, due to excessive sharpening, Fi and water from the water spray member 30 drop through the slit 32 and flow down the surface of the grindstone 190, contributing to the sharpening of the cutlery.

Depending on the type and size of the cutlery, the grinding surface and regulating member 2 may
5, the receiver lifts up the base 1 against the spring 10, removes the engagement holding part 2 from the engagement part 4, slides the pin 6vr in the slit 5, and the receiver lifts the base 1 against the spring 10. 1 is moved back and forth, and the engaging portion 4 is engaged with the engaging holding portion 2 at a desired location. Therefore, the above engagement is maintained by the spring 10. In addition, be sure to tighten the set screw 9 strongly.
#i, it becomes stronger than the consolidation. In addition, when the bond is released,
When the set screw 9 is loosened, the resistance of the spring 1o becomes smaller, so that the above-mentioned gap adjustment becomes more convenient.

Ota. To avoid wear at the same location, when you want to move the grinding wheel 19 up and down, loosen the set screw 14 and move the dovetail groove 12.
, move the support block 13 up and down to the desired height.
Tighten the set screw 141-L again.

As described in detail above, the present invention includes a holder for a cutter that slidably supports the back surface of the cutter, a grindstone having an upright grinding surface corresponding to the holder, and a grinding surface of the grindstone. The holder is provided with an NFC regulating member provided on the stand so as to prevent the back side of the cutler from moving to the side of the cutler when the edge of the cutler is in contact with the cutter. The edge of the blade is placed on the grinding surface of the whetstone, and the holder is positioned with the back side of the blade on the table, and the blade is reciprocated with the regulating member regulating the inclination of the blade to perform sharpening. Because of this structure, the blade only receives contact pressure against the abrasive surface with the given twist, so there is no unnecessary resistance, and the blade can be moved back and forth easily. Since the contact angle of
There is no risk of the blade becoming "round," and the accurate sharpening angle allows you to sharpen with good sharpness.

[Brief explanation of the drawing]

Fig. 1 is a partially longitudinal side view showing an embodiment of the present invention, Fig. 2 is an exploded perspective view, Fig. 3 is a partially longitudinal side view of the pedestal, and Fig. 4 is for explaining the sanding state. It is a schematic @ side view. 1...Bake is stand, 19...Whetstone, 25...
...To the Regulation Department E-9 4iIm Procedural amendment (method) August 21, 1980 Kazuo Tomiwakasugi, Director General of the Japan Patent Office1, Indication of the case 1982 Patent m1m1!61363 No.3, Person making the amendment Case @ho Patent release date 4, date of amendment order as shown in the attached sheet

Claims (1)

[Scope of Claims] (11) A cutter holder that slidably supports the back surface of the cutter includes a stand, a grindstone whose grinding surface is erected in correspondence with the holder, and a blade of the cutter on the grinding surface of the grindstone. The holder is provided on the stand and includes a regulating member to prevent the back side of the cutter from moving to the side of the cutter when the edge is raised. The blade is configured to sharpen by reciprocating with the blade edge in contact with the grinding surface of the whetstone, the holder positioning the back side of the blade on a stand, and the inclination of the blade being regulated by a regulating member. (2) The above-mentioned holder is used to sharpen the regulating member and the whetstone on the table.
- A sharpening tool for cutlery according to claim 1, characterized in that it is provided with a means for adjusting relative movement so that the distance to the surface can be adjusted. (3) The whetstone Fi is provided on a support member having a rotation center, and by rotating the support member, the abrasive surface facing the cutter can be selected from a plurality of whetstone pieces with different roughnesses. The support member is configured such that the support member is configured to
The sharpening tool for cutlery according to claim 1, further comprising a fixing means for fixing to prevent the sharpening. (4) The tool for sharpening cutlery according to claim 1, wherein the stand of the whetstone or holder is configured to be relatively vertically adjustable. (6) Claim 1, characterized in that means for supplying a sharpening liquid is installed above the grindstone.
A sharpening tool for cutlery listed in the section.