JP3940116B2 - Bamboo sword cutting tool - Google Patents

Description

  The present invention relates to a bamboo sword cutting tool employed for cutting bamboo swords in the field of martial arts, such as kendo.

  In general, in the field of martial arts, such as kendo, tools made of bamboo called bamboo swords are used, but as a means of cutting bamboo materials for making this bamboo sword and maintaining it after use, A knife or the like was used. In some cases, the surface of bamboo was shaved with pieces of ceramics or glass.

  However, with the above-mentioned bamboo sword cutting tools such as knives, knives, ceramics and glass fragments, when cutting bamboo material, the blade angle with respect to bamboo material and the direction of cutting must be kept constant and skill is required, Not everyone could easily cut the surface of bamboo.

  In addition, the above-described prior art of the bamboo sword cutting tool has a problem in that there is a possibility that the hand may be hurt by the cutting edge or a broken piece of bamboo material.

  This invention is made | formed in view of the said malfunction, and makes it a subject to provide the cutting tool of the bamboo sword which anyone can cut the surface of a bamboo material easily and safely.

  In addition, as far as the applicant knows, the bamboo sword cutting tool described in the present application has no known examples similar to the application of the present application, and therefore does not have prior art document information to be disclosed at the time of the present application.

  The present invention for solving the above problems is a cutting tool for cutting bamboo material of a bamboo sword, and is provided on a cylindrical main body having an insertion hole provided along a central axis, and on an outer peripheral surface of the main body. A gripper for a person to grip the main body, and a cutting blade provided at the inner peripheral edge of at least one end of the main body, and a bamboo sword bamboo material can be inserted into the insertion hole of the cylindrical main body. In addition, the bamboo sword is configured to be able to cut the surface of the bamboo material in a state where the bamboo material is inserted and the main body is inclined and the cutting blade is in contact with the surface of the bamboo material. A cutting tool.

  According to the present invention, the surface of the bamboo material can be cut only by displacing the inclined main body relative to the bamboo material, so that no skill is required for cutting the bamboo material, and anyone can easily remove the bamboo material. The surface can be cut. Moreover, since the cutting blade is provided in the inner peripheral edge part of the edge part of a main body, the surface of a bamboo material can be cut safely.

  The cutting blade is preferably formed by an end surface of the main body and a surface that contacts the end surface at an angle of 90 degrees or an acute angle.

  According to this preferable aspect, since the one surface of the cutting blade is formed by the end surface of the main body, the cutting blade is directed to the outside, so that it is extremely safe from the outside. is there.

  Moreover, it is preferable that this bamboo sword cutting tool is provided on the outer peripheral surface of the said main body, and is provided with the file surface which grind | polishes the surface of a bamboo material.

  According to this preferable aspect, the surface of the bamboo material can be made fine by polishing the rough surface portion of the surface of the bamboo material, such as the chiseled portion after cutting, with the file surface.

  Furthermore, this bamboo sword cutting tool is preferably provided on the outer peripheral surface of the main body and has a smooth finish surface for finishing the surface of the bamboo material.

  According to this preferred embodiment, the surface of the bamboo material is made fine with a file surface, and then the surface of the bamboo material is pressed against the smooth finished surface and rubbed to finish the surface of the bamboo material with a finer texture. Can do.

  And it is preferable that the said penetration hole can penetrate the bamboo material of the state which the grip part of the bamboo sword was bundled, and the said cutting blade can cut the outer surface of this bundled bamboo material.

  According to this preferred embodiment, the grip portion of the bamboo sword made of the bamboo material in a bundled state can be inserted into the insertion hole, and the outer surface can be cut with the cutting blade, so that the grip portion of the bamboo sword is adjusted to a preferred outer diameter. can do.

  According to the present invention, there is a remarkable effect that anyone can easily and safely cut the surface of a bamboo sword.

  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a conceptual diagram showing a configuration of a bamboo sword 20 to which a bamboo sword cutting tool 10 (FIG. 2) according to an embodiment of the present invention is applied. FIG. 1 (a) is an exploded side view of the bamboo sword 20. FIG. These respectively show AA sectional views of FIG.

  As shown in FIGS. 1 (a) and 1 (b), a bamboo sword 20 to which a bamboo sword cutting tool 10 according to an embodiment of the present invention is applied is configured in a state where four elongated bamboo members 21 are bundled. These four bamboo materials 21 are covered with a cap-like tip skin 22 at the tip, and a handle skin 24 is put on the grip portion 23, and an unillustrated string is stretched between the tip skin 22 and the handle skin 24. And bundled together. Further, although not shown in detail, a string-like skin called a middle tie binds the four bamboo members 21 together at a portion of about 30 cm from the tip of the bamboo sword 20. Further, the grip portion 23 can be attached by inserting an annular collar 25 from above the handle skin 24.

  Next, FIG. 2 is an outline view showing the configuration of the bamboo sword cutting tool 10 according to the embodiment of the present invention, wherein (a) is a side view of the bamboo sword cutting tool 10, and (b) is a bamboo sword cutting. A top view of the tool 10, (c) shows a bottom view of the bamboo sword cutting tool 10.

  FIG. 3 is a longitudinal sectional view showing the configuration of the bamboo sword cutting tool 10 according to the embodiment of the present invention.

  2 (a), (b), (c) and FIG. 3, the bamboo sword cutting tool 10 according to the embodiment of the present invention is integrally formed by metal cutting. The cylindrical main body 1, the grip portion 2 provided on the outer peripheral surface of the main body 1, and the cutting blade 3 provided on the inner peripheral edge of both end portions of the main body 1 are provided. The blade 3 is formed integrally with the main body 1. The bamboo sword cutting tool 10 includes a file surface 4 and a finish surface 5 on the outer peripheral surface of the main body 1.

  The main body 1 has an insertion hole 1 b having a circular cross section provided along the central axis 1 a of the main body 1. The insertion hole 1b is for allowing the bamboo material 21 (FIG. 1) of the bamboo sword 20 to be ground to be inserted. Both ends are opened to the outside, and one bamboo material 21 is inserted from end to end. Has a sufficient inner diameter. The inner diameter of the insertion hole 1b is such that the grip 23 of the bamboo sword 20 can be inserted in a state where the bamboo material 21 is bundled.

  The grip portion 2 is a non-slip portion for an operator (not shown) to grip the main body 1, and is formed by inserting linear notches 2 a at equal pitches in the middle of the outer peripheral surface of the main body 1. Yes.

  The cutting blade 3 is a portion provided for cutting the outer surface of the bamboo material 21 of the bamboo sword 20 inserted through the insertion hole 1b. At one end 3a, the end surface 1c of the main body 1 and the end surface 1c are provided. It is formed by a surface 1d that meets at an acute angle to the surface. The other end 3b is formed by an end face 1e of the main body 1 and a face 1f that meets the end face at an angle of 90 degrees.

  The cutting blade 3 cuts the outer surface of one bamboo material 21 from end to end, and the outer surface of the bamboo material 21 in a bundled state with respect to the grip portion 23 of the bamboo sword 20 within the range of the grip portion 23. It is configured to be able to.

  The file surface 4 is for rough polishing of the surface of, for example, the bamboo material 21 after cutting, and the surface is innumerable due to intersecting linear notches engraved at an equal pitch on one end side of the outer peripheral surface of the main body 1. Are provided with the unevenness 4a.

  The finished surface 5 is for finely finishing the surface of the bamboo material 21 after polishing, for example, and is formed by a smooth surface 5a provided on the other end side of the outer peripheral surface of the main body 1, and the smooth surface 5a The surface of the bamboo material 21 is pressed to make a fine finish.

  Next, with reference to FIGS. 4-8, the effect | action of the cutting tool 10 of the bamboo sword which concerns on embodiment of this invention is demonstrated. 4-8 is explanatory drawing which shows the use condition of the cutting tool 10 of the bamboo sword which concerns on embodiment of this invention.

  First, FIG. 4 is an explanatory view showing a state in which the bamboo material 21 of the bamboo sword 20 is being cut with one cutting blade 3. In this state, the operator holds the grip portion 2 of the main body 1, and the bamboo material 21 of the bamboo sword 20 to be ground is inserted into the insertion hole 1 b of the main body 1, and the main body 1 is inclined with respect to the bamboo material 21. Then, the cutting blade 3 is brought into contact with the surface of the bamboo material 21. The main body 1 is displaced relative to the bamboo material 21 in the longitudinal direction of the bamboo material 21 so that the surface of the single bamboo material 21 is cut from end to end.

  FIG. 5 is an explanatory diagram showing a state in which the bamboo sword 20 is being cut with both the cutting blades 3. In this state, the main body 1 is further inclined with respect to the bamboo material 21 to be ground, which is inserted into the insertion hole 1 b of the main body 1, and both cutting blades 3 are brought into contact with the surface of the bamboo material 21. Then, as in FIG. 4, the main body 1 is displaced relative to the bamboo material 21 in the longitudinal direction of the bamboo material 21 so that the surface of the single bamboo material 21 is cut from end to end.

  FIG. 6 is an explanatory view showing a state where the bamboo sword 20 is polished by the file surface 4. In this state, the operator holds the grip portion 2 of the main body 1 so that the central axis 1a of the main body 1 is substantially orthogonal to the longitudinal direction of the bamboo material 21, and the surface of the bamboo material 21 to be polished in this state The file surface 4 is brought into contact. The main body 1 is displaced relative to the bamboo material 21 in the longitudinal direction of the bamboo material 21 so that the surface of the single bamboo material 21 is roughly polished from end to end.

  FIG. 7 is an explanatory diagram showing a state in which the bamboo sword 20 is finished with the finished surface 5. Even in this state, the operator holds the grip portion 2 of the main body 1 so that the central axis 1a of the main body 1 is substantially orthogonal to the longitudinal direction of the bamboo material 21, and the surface of the bamboo material 21 to be finished in this state The smooth surface 5a of the finished surface 5 is pressed against the surface. The main body 1 is displaced relative to the bamboo material 21 in the longitudinal direction of the bamboo material 21 so that the surface of the single bamboo material 21 is finely finished from end to end.

  FIG. 8 is an explanatory view showing a state in which the bamboo material 21 of the grip portion 23 of the bamboo sword 20 is being cut by one cutting blade 3. In this state, the bamboo material 21 of the bamboo sword 20 to be ground is inserted into the insertion hole 1 b of the main body 1 in a bundled state, and the main body 1 is inclined to bring the cutting blade 3 into contact with the surface of the bamboo material 21. And by displacing the main body 1 in the longitudinal direction of the bamboo material 21, the outer surface of the bundled bamboo material 21 can be cut and the outer diameter of the grip portion 23 can be adjusted. .

  As described above, according to the bamboo sword cutting tool 10 according to the embodiment of the present invention, the surface of the bamboo material 21 can be cut only by displacing the inclined main body 1 relative to the bamboo material 21. Therefore, any person can easily cut the surface of the bamboo material 21 without skill in cutting the bamboo material 21. Moreover, since the cutting blade 3 is provided in the inner peripheral edge part of the edge part of the main body 1, the surface of the bamboo material 21 can be cut safely.

  Further, according to this bamboo sword cutting tool 10, since one surface constituting the cutting blade 3 is formed by the end surface 1 c of the main body 1, the cutting blade 3 is directed toward the outside. It is extremely safe for handling from the outside.

  And according to this cutting tool 10 of a bamboo sword, the rough surface part of the surface of the bamboo material 21, such as the cutting portion after cutting, is polished with the file surface 4, thereby making the surface of the bamboo material 21 fine. be able to.

  Further, according to this bamboo sword cutting tool 10, the surface of the bamboo material 21 is made fine with the file surface 4, and then the surface of the bamboo material 21 is pressed against the smooth finished surface 5 and rubbed. The surface can be finished to a finer detail.

  Moreover, since the grip part 23 of the bamboo sword 20 made of the bamboo material 21 in a bundled state can be inserted into the insertion hole 1b and the outer surface can be cut with the cutting blade 3, the grip part 23 of the bamboo sword 20 has a desired outer diameter. Can be adjusted.

  The above-described embodiment is merely a preferred specific example of the present invention, and the present invention is not limited to the above-described embodiment.

  For example, the illustrated configuration of the bamboo sword 20 such as the cap-shaped tip skin 22, the grip portion 23, the handle skin 24, and the scissors 25 does not limit the bamboo sword cutting tool 10 according to the embodiment of the present invention. As long as the cutting tool for bamboo swords according to the present invention is a bamboo sword made of bamboo, any bamboo sword can be adopted by changing the design of the inner diameter of the insertion hole 1b.

  The main body 1 does not necessarily have a cylindrical shape, and various design changes can be made to the shape of the main body 1 such as an elliptical cylinder. Further, the cross-sectional shape of the insertion hole 1b is not necessarily circular, and various design changes can be similarly made.

  Furthermore, the gripping portion 2 is also required to have a non-slip structure for the operator to grip the main body 1, and is not necessarily formed by inserting linear notches 2 a at an equal pitch. Absent.

  Moreover, the cutting blade 3 does not necessarily need to be provided at both ends, and it is also possible to employ one provided at either one of the ends.

  And if the angle of the front-end | tip of the cutting blade 3 is 90 degree | times or an acute angle, it can set to arbitrary angles.

  As long as the surface 4 of the bamboo material 21 can be polished, the file surface 4 does not necessarily have to be formed by intersecting linear indentations that are engraved at an equal pitch. It can be adopted.

  Similarly, the finished surface 5 does not necessarily have to be a concave smooth surface as shown in the drawing, and various shapes can be adopted as long as the surface of the bamboo material 21 can be finely finished.

  In addition, it goes without saying that various design changes are possible within the scope of the claims of the present invention.

It is an exploded view which shows the structure of the bamboo sword to which the cutting tool of the bamboo sword which concerns on embodiment of this invention is applied, (a) is a side view of a bamboo sword, (b) is AA of FIG. 3 (a). Cross-sectional views are shown respectively. BRIEF DESCRIPTION OF THE DRAWINGS It is an external view which shows the structure of the cutting tool of the bamboo sword which concerns on embodiment of this invention, (a) is a side view of the cutting tool of a bamboo sword, (b) is a top view of the cutting tool of a bamboo sword, (c). These show bottom views of the bamboo sword cutting tool. It is a longitudinal cross-sectional view which shows the structure of the cutting tool of the bamboo sword which concerns on embodiment of this invention. It is explanatory drawing which shows the state which is cutting the bamboo sword with one cutting blade. It is explanatory drawing which shows the state which is cutting the bamboo sword with both cutting blades. It is explanatory drawing which shows the state which grinds the bamboo sword in the file surface. It is explanatory drawing which shows the state which has finished the bamboo sword in the finishing surface. It is explanatory drawing which shows the state which is cutting the bamboo material of the grip part of a bamboo sword with one cutting blade.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 1a Center axis | shaft 1b Insertion hole 2 Gripping part 3 Cutting blade 4 File surface 5 Finishing surface 10 Cutting tool of bamboo sword 21 Bamboo material 23 Grip part

Claims (5)

A cutting tool for cutting bamboo swords,
A cylindrical body having an insertion hole provided along the central axis;
A grip portion provided on the outer peripheral surface of the main body for an operator to grip the main body;
A cutting blade provided at the inner peripheral edge of at least one end of the main body, and the bamboo material of the bamboo sword can be inserted into the insertion hole of the cylindrical main body, and the bamboo material is inserted in this way, and the main body is A cutting tool for a bamboo sword characterized by being capable of cutting the surface of the bamboo material in a state where the cutting blade is brought into contact with the surface of the bamboo material by being inclined.   2. The cutting tool for a bamboo sword according to claim 1, wherein the cutting blade is formed by an end surface of the main body and a surface that intersects the end surface at 90 degrees or at an acute angle.   The cutting tool for a bamboo sword according to claim 1 or 2, further comprising a file surface provided on the outer peripheral surface of the main body and polishing the surface of the bamboo material.   The bamboo sword cutting tool according to any one of claims 1 to 3, further comprising a smooth finish surface provided on an outer peripheral surface of the main body and finishing a surface of the bamboo material.   The insertion hole is capable of inserting a bamboo material in a bundled state of a grip portion of a bamboo sword, and the cutting blade is capable of cutting the outer surface of the bundled bamboo material. The cutting tool for bamboo swords according to any one of claims 1 to 4.

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