Folding structure of paper sumo wrestler and its stabilization mechanism

Abstract

This paper sumo wrestler, designed for paper sumo, has poor forward movement and an unstable direction of travel due to its folding structure and contact shape, making it prone to tipping over. Therefore, this paper sumo wrestler is designed to move forward stably, suppress directional deviations, and allow for adjustment of individual differences. [Solution] The sumo wrestler's left and right side view (Figure 1) is positioned symmetrically along an axis connecting the head sides, and a folding structure is adopted to form an upright shape by folding the axis in a mountain fold. In addition, the contact area is made into a curved shape, and a slight forward tilt is given to allow for back-and-forth swaying, thereby improving forward movement. Furthermore, by making the feet adjustable in the left and right directions, the direction of travel and individual differences can be adjusted, achieving stable forward movement.

Description

Technical Field

[0001] The present invention relates to a toy using paper material, particularly to the shape and folding structure of a wrestler used in "paper sumo (ton-ton sumo)".

Background Art

[0002] Conventionally, for a wrestler for paper sumo, the side shape of the wrestler is symmetrically drawn on cardboard, and after arranging them side by side, they are mountain-folded along the fold line on the back side to maintain an upright shape. However, there were several problems with this conventional structure. First, even when the battle surface is struck to give vibration, the wrestler often does not move forward in the intended direction but repeatedly moves backward, making it difficult to establish the original pushing motion of sumo, so there was a problem that the battle could not be established. Also, due to the structure with the back side as the fold line, the grounding width becomes narrower toward the rear. Therefore, when the wrestler swings back and forth, due to the influence of the grounding width, the traveling direction easily changes randomly and unexpectedly, and the direction changes unintentionally. Also, the whole wrestler becomes unstable and is likely to fall due to vibration. Furthermore, due to such characteristics, the operation feeling and competitiveness of the paper sumo toy decreased, and the value as a toy was not fully demonstrated.

Summary of the Invention

Problems to be Solved by the Invention

[0003] In paper sumo, in order for the wrestler to move forward stably and establish a sumo-like pushing motion, it is an object to provide a wrestler shape with a structure that stabilizes the forward direction and allows adjustment of individual differences. In order to solve this problem, the present invention adds new ideas to the folding structure of the wrestler and the shape of the grounding part. Conventionally, for a paper sumo wrestler, the left and right views of the wrestler seen from the side were arranged left and right, and a structure of mountain-folding along the fold line on the back side was adopted. Therefore, the grounding width on the rear side became narrow, and backward movement and unintentional direction changes due to vibration were likely to occur. Also, the mechanism for adjusting individual differences was lacking, and it was difficult to intentionally stabilize the forward direction.

Means for Solving the Problems

[0004] The paper sumo wrestler according to this invention differs from conventional designs in the orientation of its left and right diagrams. Specifically, the left and right side diagrams of the wrestler are positioned with the axis connecting the head side, rather than the back side, as the axis of symmetry, and the symmetry line near the top of the head is folded in a mountain fold. This change in folding direction results in a new folding structure that is 90 degrees different from the conventional folding line direction, stabilizing the center of gravity and ground contact posture when the wrestler is standing upright. Furthermore, in this invention, the wrestler's contact points are curved, causing the wrestler to lean slightly forward. This forward lean and curved contact points allow the wrestler to naturally sway (pitching) in the front-to-back direction when subjected to vibrations, making it easier to produce the forward movement characteristic of sumo wrestling. In addition, the structure allows for adjustment of the forward direction and individual differences by slightly twisting or bending the legs from side to side while the figure is folded. This allows the creator to subtly add individual characteristics to even sumo wrestlers of the same shape, thereby enhancing the gameplay of the matches. [Effects of the Invention]

[0005] This invention provides the primary benefit of significantly improving the stability of the direction of movement. In conventional designs, the fold line is on the back, resulting in a narrower contact area towards the rear. This can cause the paper sumo wrestler to tip over backward due to vibrations or to change direction randomly when it returns to its original position. In contrast, this invention uses the top of the head as the fold line, ensuring that the contact surface is always parallel to the wrestler's direction of movement. As a result, the center of gravity is stable in the direction of the fold line, making it less prone to directional deviations during return to its original position and enabling smooth forward movement. This greatly improves the competitive aspect of paper sumo. Furthermore, the folding structure allows for easy adjustment of individual differences when the sumo wrestlers are combined in an upright position, simply by making minor adjustments to the left and right ends of the base. This allows the creator to impart characteristics such as "easy to move forward" or "strong quirks," broadening the possibilities of the toy. It goes beyond being a mere paper toy, increasing its value as a plaything that allows for creative and strategic play. [Brief explanation of the drawing]

[0006] [Figure 1] This is the traditional configuration for paper sumo wrestlers, with side views placed on the left and right, and the back folded in the traditional way. [Figure 2] This is a diagram of a sumo wrestler according to the present invention, with the top of the head positioned in a left-right inverted configuration with the top of the head as the axis of symmetry. [Figure 3] This shows the upright structure obtained by folding along its axis of symmetry. It also shows the curved shape of the contact area and the slightly forward-leaning posture. [Figure 4] This diagram illustrates how to adjust the forward direction by making minor left-right adjustments to the foot area. [Modes for carrying out the invention]

[0007] The paper sumo wrestler of this invention can be made from a plate-like material with appropriate rigidity and workability, such as cardboard, cardstock, synthetic paper, or resin sheet. The left and right side views of the sumo wrestler are drawn or printed on the left and right sides with the axis connecting the top of the head as the axis of symmetry, and by folding this axis of symmetry, the shape of an upright sumo wrestler is formed. The contact surface is pre-formed with a curved shape. The center of gravity is forward, resulting in a forward-leaning posture. The curvature and forward tilt angle of the contact surface can be appropriately changed according to the responsiveness to vibration input and forward-moving characteristics. Furthermore, by slightly twisting the foot portion that touches the ground in the folded sumo wrestler, or bending it outward, the direction of forward movement and movement characteristics can be finely adjusted. This makes it possible to give each sumo wrestler different forward movement and quirks, enhancing the strategic and playful aspects of the match. It should be noted that this invention is not limited to these specific forms, and the material, shape, curvature, fold line position, etc., can be appropriately modified without departing from the spirit of the invention. [Examples]

[0008] An embodiment will be described below with reference to the attached drawings. Print the left and right side views 1 of the sumo wrestler onto cardboard and cut them out. 2 is the upright shape of the cut-out sumo wrestler. This is obtained by making a mountain fold along the axis of symmetry 3 at the top of the head. 4 is the contact point of the sumo wrestler, which is a gentle curve with a radius of about 20 to 40 millimeters, adjusted so that the sumo wrestler is slightly tilted forward. As a result, when subjected to vibrations from striking, the sumo wrestler will move forward while swaying back and forth.

[0009] 5 is a form in which the contact points of the three-dimensional sumo wrestler are slightly curved outward by about 1 to 3 millimeters in the left-right direction, changing the direction of forward movement in response to vibration input, resulting in individual differences. This fine adjustment allows for the creation of wrestlers that "move straight forward," "are strong to the left," or "move with strong quirks and irregular movements," etc. By having these wrestlers compete against each other, the playability of paper sumo is greatly enhanced.

[0010] This embodiment is an example to aid in understanding the present invention, and the position of the fold line, ground curvature, forward tilt angle, adjustment angle, material, size, etc. may be changed as appropriate without departing from the technical scope of the present invention. [Explanation of symbols]

[0011] 1. Side view of a sumo wrestler (left and right sides) 2. Cut-out diagram of a sumo wrestler standing upright 3. Axis of symmetry at the top of the head 4. Sumo Wrestlers' Facilities 5. Diagram showing the wrestler's mounting section curved outwards.

Claims

1. A folding structure for a paper sumo wrestler, characterized in that an axis connecting the tops of the heads of the left and right side views of the wrestler is used as the axis of symmetry, and the wrestler is made to stand upright by folding along this axis of symmetry.

2. A paper sumo wrestler according to claim 1, characterized in that the contact area (foot side) is curved to place the center of gravity forward, thereby creating a slight forward lean posture, and thus stably generating forward and backward movement when vibration is input.

3. A paper sumo wrestler according to claims 1 and 2, characterized in that the foot portion can be slightly deformed in the left-right direction when folded, and the forward direction and movement characteristics can be adjusted.

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