JPH0260670A - Guard for bamboo sword - Google Patents

Abstract

PURPOSE:To present sure fixing ability for a long time by integrally providing the guard holder of a soft elastic body to have a fitting hole, for which a small diameter part is formed in one side, on the inner circumferential surface of a guard body to be formed in a ring shape and forming a circumferential groove part in the side part of this guard holder. CONSTITUTION:A guard 1 is composed of a guard body 2 to be formed in the ring shape and a guard holder 4 of the soft elastic body to be integrally provided on an inner circumferential surface 3 of the guard body 2. For the guard holder 4, a fitting hole 6, for which a small diameter part 5 is formed in one side, is provided. Then, one part 5' of the small diameter part 5 is formed in a taper shape and smoothly contacts the other part of the fitting hole 6, namely, a large diameter part to correspond to the grip part of a bamboo sword to be a mounting object. A circumferential groove part 8 is formed in the outer circumference of the small diameter part 5 along a side part 7 in the small diameter part 5 side of the guard holder 4. Ring-shaped recessing parts 9 and 10 are formed in both side parts a little to the inner circumferential surface of the guard body 2 and flange parts 11 and 12 of the guard holder 4 are adhered and engaged to the recessing parts 9 and 10. Then, roundness is given to an edge part 3' on an inner circumferential surface 3 of the guard body 2.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a shinai tsuba.

The tsuba of a conventional shinai is usually formed into an annular shape made of synthetic resin or the like, and its inner peripheral surface is provided with a hole so that the shinai handle can be attached at a predetermined position.

FIG. 5 is a diagram briefly explaining the conventional shinai tsuba and its mounting method, where 100 is the shinai tsuba described above, 101 is made of soft rubber, etc. A guard stopper 102 having a hole is a shinai handle formed in a tapered shape, and the handle 102 is composed of a base of a shinai main body formed from four split bamboos and a handle 102a covering the base. has been done.

When attaching the tsuba 100 to the handle 102, insert the tsuba 100 from the small diameter end of the handle 102, and position it at a position where the outer diameter of the handle 102 is slightly larger than the inner diameter of the tsuba 100 ( For predetermined attachment, move the top of the handle 102 toward the large diameter side to a predetermined attachment position) to elastically deform the handle 102a, and use the restoring force of the handle 102a to crimp and fix the collar 100 to the handle 102. In order to prevent the collar 100 from moving in the small diameter direction on the handle 102 and becoming loose, the collar stopper 101 is attached in the same manner as described above, and one side of the collar 100 is pressed.

Problems to be Solved by the Invention In the conventional method of crimping and fixing the tsuba 100 to the shank 102 using the restoring force of the shank 102a, the tsuba 100 is attached to the shank 102 at a predetermined position, and the shank is always attached to the shank. The portion 102a is in an elastically deformed state, and the handle portion 10
Since the restoring force of 2a is gradually lost, eventually it becomes impossible to obtain enough restoring force to press and fix the flange 100 in a predetermined position, and there is a drawback that reliable fixing performance cannot be exhibited.

In addition, if the tsuba 100 and the tsuba stop 101 are forcibly moved from their predetermined positions on the handle 102 in the direction of the smaller diameter due to a strong impact directly applied during a competition between tsuba 100 and the like, the tsuba 100 Looseness occurs between the inner peripheral surface and the handle 102, and the movement of the collar stopper 101 also causes play in the longitudinal direction of the handle 102, making the attachment of the collar 100 extremely unstable. This has the negative effect of making it difficult to concentrate.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to exhibit reliable fixing performance over a long period of time, to make it difficult for the specified mounting position to move from the position when it is worn, and even if it does move, it is sufficient for practical use. The objective is to provide a shinai tsuba that can exhibit fixing performance.

Means for Solving the Problems In order to achieve the above object, the present invention provides a flange made of a soft elastic body having a hole in the inner peripheral surface of the flange body formed in an annular shape and having a small diameter portion formed on one side. It has a configuration characterized in that a stopper is integrally provided and a circumferential groove is formed on the side of the stopper on the outer periphery of the small diameter portion on one side.

Function: The small diameter part of the hole is largely elastically deformed by the periphery ii/i to fit into the handle of the shinai, and the restoring force of the elastic deformation causes the tsuba to become a shinai. Fix it.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view showing the cut edge II-n of FIG. 2 of the shinai guard 1 in one embodiment.

In FIG. 1, a collar 1 is composed of a collar body 2 formed in an annular shape and a collar stopper body 4 made of a soft elastic body and integrally provided on an inner circumferential surface 3 of the collar body 2. As shown in FIG.

The flange body 4 has a mounting hole 6 with a small diameter portion 5 formed on one side.
A part 5' of the small diameter part 5 is formed in a tapered shape so that the part 5' of the small diameter part 5 smoothly communicates with the round part of the hole 6, that is, the large diameter part corresponding to the shinai handle part to be attached, Guard stop break 4
A circumferential groove portion 8 is formed on the outer periphery of the small diameter portion 5 of the side portion 7 on the small diameter portion 5 side.

Further, in order to integrally but firmly fix the collar body 2 and the collar stopper body 4, annular recesses 9 and 10 are formed on both sides of the collar body 2 near the inner circumferential surface, and the recesses 9° The flange portions 11 and 12 of the flange body 4 are closely fitted to the flange body 2.
The edge 3' of the inner circumferential surface 3 of the flange 3 is rounded to prevent damage such as cracks from occurring at the fitting part on the side of the flange 4 made of a soft elastic material. 7 langes 12 on one side
has a larger outer diameter than the flange portion 11 on the other side, and has a gentle roundness added to the side portion 7 to create a shape that fits the hand holding the shinai handle, while the inner edge 11 of the flange portion 11 ' is also appropriately rounded, making it easy to attach the tsuba 1 to the handle of the shinai.

In this embodiment, the flange body 2 is relatively Vj! The flange body 4 is made of soft synthetic rubber, and the flange body 4 is formed by insert molding, which is part of the WA manufacturing process of r:jl, into the recessed part of the flange body 2. It is integrally formed around the inner circumferential portion 3 including 9 and 10. A plurality of holes 13 communicating from the recess 9 to the recess 10 are provided in the flange body 2 at inner corners on the inner periphery.
During molding, the soft synthetic rubber flows well, and when completed, the flange portion 1112 of the collar stopper 4
Since they are integrally connected through the hole 13, the collar body 2 and the collar stopper body 4 are firmly integrated.

When attaching the tsuba 1 to the shinai handle, first attach the tsuba stopper 4 by inserting the tsuba 1 from the small diameter side of the shinai handle with the large diameter part of the hole 6 facing the tip of the sword. The outer diameter of the shaped bamboo handle is moved to a position where it is slightly larger than the inner diameter of the large diameter portion of the hole 6. Then, when the flange stopper body 4 made of soft synthetic rubber is attached, the hole 6 is elastically deformed and bent toward the outer circumference, and the flange 1 is fixed to the shinai handle by the restoring force generated by the elastic deformation. At this time, the small diameter part 5 is elastically deformed to a greater extent than other parts of the hole 6 during installation and bends toward the outer circumference, but since a rounded part 8 is formed on the side part 7 on the small diameter part 5 side, the small diameter The portion 5 is easily bent, no unnecessary friction occurs between it and the handle of the bamboo sword, and no damage is caused to the sutured portion of the handle. On the other hand, when the tsuba 1 is moved to the predetermined attachment position of the bamboo sword handle, the small diameter portion 5 expands toward the outer periphery with appropriate deflection/ν, and the circumferential groove 8 of the flange stopper 4 comes into pressure contact with the small diameter portion 5. Since the portion 5 is integrated with the collar stopper 4, maximum fixing force can be exerted. In this way, the fixation of the tsuba 1 to the shinai handle is achieved by elastic deformation of the tsuba stopper body 4 made of soft synthetic rubber, so there is no damage to the shank like in the past, and it is possible to Even if the handle is damaged for some reason and its restoring force is impaired, reliable fixing performance can be demonstrated over a long period of time.

For installation, even if the diameter of the bamboo sword handle that fits into the hole 6 is small to some extent, the small diameter part 5 provided on one side of the hole 6 makes it possible to achieve a practical fixing performance of 1q. For example, when the tsuba 1 moves to the smaller diameter side of the shinai handle due to a strong impact during a tsuba competition during a competition, the attachment becomes loose between the hole 6 and the shinai handle. Since the fixed state of the tsuba 1 is maintained by the small diameter portion 5, the athlete does not feel anxious and lose concentration.

Next, yet another embodiment will be described.

In this embodiment, the attachment of the tsuba 1 to the shinai handle in the previous embodiment is made more secure, and the lateral wobbling is suppressed to the minimum.

FIG. 3 is a sectional view taken along the cut line rv-rv in FIG. 4 of the shinai guard 1 in this embodiment. The structure of the main part of the collar 1 of this embodiment is the same as that of the above-mentioned embodiment, but protrusions 1 are formed integrally with the collar body 2 at predetermined intervals on the inner circumferential surface 3 of the collar body 2.
4 is provided, and the attachment of the flange stopper 4 fitted inside the flange body 2 is different in that it is exposed from the hole 6. Therefore, in this embodiment, the tsuba 1 is positioned with respect to the handle of the bamboo sword by the protrusion 14 made of relatively hard synthetic resin exposed from the hole 6. Compared to the case where positioning is performed only using the flange stopper body 4, the lateral wobbling of the flange 1 can be more reliably prevented. Other functions and effects are the same as in the embodiment described above.

In addition, natural rubber is used as the flange body of the present invention.

Synthetic rubber, soft synthetic resin, or foams thereof are used, and if the handle of the shinai is made of the same material as the shank, the adhesion will be excellent.

Effects of the Invention According to the present invention, since the tsuba is fixed to the shinai by the elastic deformation of the tsuba stopper made of a soft elastic body, reliable fixing performance can be achieved over a long period of time regardless of the state of the shinai body. In addition, if the diameter of the γJ sword to be fitted is smaller than the diameter of the mounting hole, for example, the tsuba will move from its designated position and loosening will occur between the tsuba and the shinai. Even in such a case, the elastic deformation of the small diameter part of the flange body and the rounded part on its outer periphery provides a practically sufficient fixing performance. can be done.

[Brief explanation of the drawing]

FIG. 1 is an embodiment of the present invention shown in FIG. 2 II-II! ! 11
2 is a cross-sectional view taken along the line ■--■ in FIG. 1 of a half part of the same embodiment; FIG. FIG. 3 is a cross-sectional view taken along line IV--IV of a half portion of the same embodiment, and FIG. 5 is a front view schematically showing the tsuba of a conventional shinai and a fukuro-uchi method. 1... Tsuba of Shinai, 2... Tsuba body, 3... Inner peripheral surface, 4
... Flange body, 5... Small diameter part, 6... Recess (1 hole, 7... Side part, 8... Round part, 9, 10... Concave part, 11.12 ... Flange part, 13 ... Hole, 14
...protrusion. Cause, cause, diagram

Claims (1)

[Claims] A flanging body made of a soft elastic body having a mounting hole with a small diameter portion formed on one side is integrally provided on the inner circumferential surface of the annularly formed flanged body, and the flanging body side of the outer periphery of the small diameter portion on one side is provided. A shinai tsuba characterized by having a circumferential groove formed in the part.