JPH0517090Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to bales for the sumo ring. More specifically, the present invention relates to a ring for use in a sumo ring that allows one to enjoy sumo wrestling in a perfect ring for a long period of time without changing the position by digging up or refilling the ring during use.

Conventional technology A conventional sumo ring consists of a cylindrical body made of bundles of straw wrapped around the outer circumference with string at several points as one unit of the ring, and an inner ring in which multiple ring bags are arranged in a circle. In addition to the outer dohyo, which had multiple dohyō bales arranged in a square shape on the outside, one dohyō bawé was placed appropriately and used as a toku bawara, a nari bō, or a sumikiri bawara.

Recently, in place of the cylindrical body of straw bundles, dohyō bales have been used, which have a cylindrical outer skin made of sheet materials such as canvas fabric sewn together and filled with a filler material such as sand or sponge.

These dohyo bales are placed and fixed with half buried in the ground.

Problems that the invention aims to solve Special techniques are required to stably bury dohyō bales in the soil, and while the dohyō has been used for a long period of time, the dohyō bales have been destroyed by sumo wrestlers. They are run over, stepped on, dug up, and buried.
Therefore, the sumo ring had to be dug up and rearranged frequently in order to be able to comfortably enjoy sumo.

Means to Solve the Problem This idea is based on a cylindrical outer skin made of sheet material such as cloth, leather, or synthetic resin, and a plate on the outer periphery of the bale body, which is filled with filler such as earth and sand or sponge. The above-mentioned problems were solved by providing a ring for dohyō that has fixed wings connected to it.

Function: The dohyo bales of this invention have fixed wings that are connected horizontally, inclinedly, and vertically from the outer periphery of the lower half of the bales, and are laterally displaced and raised by the force of kicks by sumo wrestlers. Also, because of the fixed wings that are connected horizontally and incliningly, the sumo wrestlers' stepping force prevents them from being vertically displaced and buried in the ground, and the bales for the dohyo can be rearranged. There is no need to prepare the ring.

Also, no special techniques are required to bury the dohyo bags in the ground.

Embodiment Next, an embodiment of this invention will be described with reference to the drawings.

Figures 1 and 2 show the first embodiment of this invention, in which 1 is a cylindrical outer skin made of sheet material such as cloth, leather, synthetic resin, etc., and the inside is filled with earth and sand, sponge, etc. The material 2 is filled to form the bale body F. m
is a plane passing through the axis of the bale body F, and a pair of horizontal rectangular plate-shaped fixed wings 4 are connected from both sides of the lower half 3 obtained by cutting the outer skin 1 in half along this plane m.

Figure 2 shows the condition when the dohyo bales of this invention are buried in the soil to form a dohyo.
It is desirable to cover 50% to 60% of the area.

In the first embodiment, a pair of fixed wings are rectangular and are connected to each other on the side, but they may also be trapezoidal 4' or semicircular 4'' as shown in Fig. 3, or even if they are installed at multiple locations on one side. It may be connected to the end face.Other square shapes,
Various shapes can be used, such as triangular and semi-elliptical. In the first embodiment, they are flat and connected horizontally, but they may be shaped like a curved plate as shown in FIG. 4, or they may be connected in an inclined or vertical manner. In addition, as shown in Fig. 5, the outer skin 1 and the fixed wing 4 are
It is also possible to prevent the fixed blade 4 from deforming due to external force by connecting the fixed blades 4 in series with each other.

A preferred example of how to adjust the dohyō bales of this invention is to sew a strong fabric such as canvas to constitute the outer skin 1, and sew fixed wings 4 made of the same material, hard plastic, or semi-hard plastic. Arrived,
The filling material 2 is earth and sand in the center and foam sponge is housed in the outer skin 1, and the opening is sewn to make a ring bale.It is strong and will not change in quality even if buried in the soil for a long time. It has a moderate amount of elasticity when stepped on or kicked, so it does not cause unpleasant resistance to the human body, and is resistant to deformation or displacement.

In addition, dohyō bales can be supplied at low cost by welding or bonding a soft vinyl material.

Effects of the invention Since the dohyō bag of this invention has the above structure,
When a sumo wrestler is placed in a sumo ring and kicks it, the applied force turns into rotational force and tries to be pulled up in the opposite direction of the force. Even if the fixed wing applies rotational force to the soil,
Since the soil applies an opposite repulsive force to the rotor, the ring bales do not rotate and are not dug up. In this case horizontal,
All fixed blades connected in an inclined or vertical direction are effective in preventing rotation.

Also, when a heavy sumo wrestler steps on a dohyo bale, a force is applied in the vertical direction, causing it to gradually sink and become buried, but the cross-sectional area perpendicular to this force becomes extremely large due to the addition of the rotor, and vice versa. Since the vertical pressure is small, it is difficult to sink. In this case, all fixed wings, in addition to the vertically connected fixed wings, are effective in preventing subsidence.

Therefore, even if the dohyo bag of this invention is used for a long period of time, it will not be dug up or buried in the soil, so the sumo match can always be comfortably used for sumo competitions.

Furthermore, since no special techniques are required to bury the dohyō bags in the ground and arrange them stably, the dohyō can be constructed using shiroto.

[Brief explanation of the drawing]

The drawings show embodiments of this invention; Fig. 1 is a perspective view of the first embodiment, Fig. 2 is a sectional view of the first embodiment when it is buried in soil, and Fig. 3 is a perspective view of the first embodiment. 4 is a plan view showing the second embodiment, FIG. 4 is a side view showing the third embodiment, and FIG. 5 is a side view showing the fourth embodiment. 1... Cylindrical outer skin, 2... Filler, 3... Lower half, 4, 4', 4'', 4'''''... Fixed wing, 5... Soil,
6... Reinforcement piece, F... bale body, m... surface.

Claims (1)

[Scope of utility model registration request] For dohyo ring, plate-shaped fixed blades 4 are connected to the outer periphery of bale body F, which is filled with filler material 2 such as earth and sand or sponge inside a cylindrical outer skin 1 made of sheet material such as cloth, leather, or synthetic resin. bales.