JP2002035189A - Ball for table tennis and table tennis set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve gaming characteristics as an entertainment. SOLUTION: By selecting a material and a diameter wherein impact resilience of a table tennis ball can be set in the range of 40 to 60%, degrees of rebounding can be decreased in comparison with conventional table tennis balls so that balls can be returned more easily. Further, ball-contacting surfaces of a racket and a table for table tennis are formed from a corrugated fiberboards, whereby balls can be returned much more easily. Additionally, by making compact a table tennis table, a space required for playing table tennis can be reduced. By chamfering corners of a flat board including play surfaces, safety can be improved, while a design which may remind players of another ball games is applied to a table tennis table, thereby producing ambiance and entertaining effects. Thus, gaming characteristics of table tennis can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a table tennis ball and a table tennis set including the ball, a racket, and a table, and more particularly to a table tennis ball and a table tennis set suitable for playing or light exercise.

[0002]

2. Description of the Related Art Table tennis is generally recognized as a handy sport because it has a smaller occupied space for playing a ball game than other ball games and has small tools such as balls and rackets. For these reasons, besides the official competitions, they are also established as amusement facilities in a corner of a sports center, hotel, bowling alley, etc. and are accepted as a kind of mass entertainment.

[0003]

However, there is a problem in playing table tennis in an ordinary home using a table tennis set of formal competition. Speaking of table tennis tables, only the size for official competitions is marketed, and the size is 2740 m in longitudinal dimension
m, the short dimension of which is up to 1520 mm (hereinafter, this table for table tennis is referred to as an existing table). In order for two or four players to play, a space larger than the size of the existing table is required as an operating space, and the occupied space is too large to be used in a general home. In addition, existing tables are heavy because they are rugged enough to withstand years of use, and often require installation and transportation when used in games.

[0004] There are other problems in playing a game with a table tennis set for official competitions. Issues related to competitiveness, safety and recreation. In terms of competitiveness, table tennis balls for official competition (hereinafter referred to as “existing balls”) have a problem in that they tend to bounce well in combination with the above-mentioned existing tables and have a high hitting speed. A variety of changing balls and intense smashes are exposed using this characteristic in formal competitions, but to play in games, this high competitiveness makes the rally difficult due to disaster, and the elderly, young people, table tennis This is one of the reasons for alienating a physically handicapped person who wants to use as a means of rehabilitation. In terms of safety, there is a problem in that the existing table is made of a rigid flat plate, and the four corners of the table are at right angles. This is because when the game becomes intense, the waist often hits the waist too much to concentrate on the hit ball. When table tennis is performed in a garage or the like which is insufficient space for installing an existing table, the danger of hitting the hips is further increased. When it comes to entertainment,
Under the current situation where only the style of the existing table tennis set can be selected, there is a problem in that the possibility of table tennis as entertainment is narrowed. Since it is not necessary to follow the rules of formal competition when playing table tennis as entertainment, it is possible to change the rules such as the scoring format at the discretion of the player in order to enjoy more. However, if the table tennis set remains the official competition style, there are limits to changing the rules, limiting those who want to enjoy table tennis as entertainment. The present invention has been made in view of the above problems, and an object of the present invention is to make table tennis more enjoyable as a game. The specific tasks to be achieved are to enable use in personal homes, to increase the number of players, to improve safety during play, and to improve entertainment.

[0005]

Means for Solving the Problems [1] A table tennis ball comprising an elastic member, wherein a rebound resilience of a cardboard board is 40% or more and 60% or less.

[2] The table tennis ball according to [1], wherein the ball has a diameter of 40 mm or more.

[3] The table tennis ball according to [1] or [2], which is made of foamed polyethylene.

[4] A table tennis set comprising a table tennis racket having a striking portion for catching and rebounding a hit ball on a flat surface and a grip portion for grasping, and a table tennis ball, wherein the member having the flat surface is provided. A table tennis set made of a cardboard board, wherein the table tennis ball is the table tennis ball according to [1], [2] or [3].

[5] It comprises a table tennis ball and a table tennis table. The table tennis table has a flat plate on which the table tennis ball is flipped on its upper surface, and legs for holding the flat plate at a predetermined height. In the table tennis set composed of a table-like member, the flat plate has a rectangular planar shape, a longitudinal dimension of 1600 mm or more and 2000 mm or less, a lateral dimension of 600 mm or more and 1000 mm or less, and the table tennis ball is [1]. ] A table tennis set comprising the table tennis ball according to [2] or [3].

[6] The table tennis set according to [5], wherein the flat plate is made of a cardboard board, a urethane foam board, or a wooden board.

[7] The table tennis set according to [5] or [6], wherein a corner of the flat plate has an R shape with a radius of 50 mm or more.

[8] A figure or pattern reminiscent of a soccer field, a basketball court, a green of a golf course or other sports facilities is given to the upper surface of the flat plate, and a part of the upper surface is used when the ball is hit. The target member or hole is provided [5],
The table tennis set according to [6] or [7].

[9] A table tennis ball and a table tennis table, the table tennis table having a flat plate on which the table tennis ball is flipped on the upper surface, and a leg-like shape for holding the flat plate at a predetermined height. In a table tennis set comprising members, a document, a graphic, or a pattern for the purpose of advertising a product or service is provided on the upper surface, and the table tennis ball is described in [1], [2], or [3]. A table tennis set comprising a table tennis ball.

[10] A table tennis ball and a table tennis table. The table tennis table has a flat plate on which the table tennis ball is flipped on its upper surface, and a leg-like shape for holding the flat plate at a predetermined height. In a table tennis set comprising members, a partition member is provided on the flat plate for distinguishing one's court from the other's court, the partition member divides the upper surface into four surfaces, and the table tennis ball is [1], A table tennis set comprising the table tennis ball according to [2] or [3].

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a table tennis ball according to the present invention will be described below with reference to FIGS. 1, 2 and 3. FIG. FIG. 1 is a diagram showing an outline of a ball and an existing ball according to an embodiment of the present invention, FIG. 2 is a diagram showing a rebound resilience measuring method, and FIG. 3 is a diagram showing a ball of the present embodiment and an existing table tennis 3 is a table for comparing the rebound resilience of a conventional ball with an existing table. The configuration of the ball and its operation will be described with reference to FIG. FIG. 1A shows a ball 1 which is the ball of the present embodiment. The diameter of the ball 1 is 44 mm, the material is a solid sphere made of foamed polyethylene (trade name: Softlon EB # 20) manufactured by Sekisui Chemical Co., Ltd., and the ball weight is 2.8 g. By using foamed polyethylene, a lightweight and elastic ball can be manufactured at low cost. FIG. 1B shows a ball 2 which is an existing ball.
The diameter of the ball 2 is 38 mm, the material is a hollow sphere made of celluloid, and the ball weight is 2.5 g. Since the diameter of the ball 1 is larger than that of the ball 2, the ball 1 has an effect of reducing the speed in the air. In addition, the use of the elastic member has an effect of absorbing the force of hitting the ball when hitting with a racket or bouncing on a table. Since foamed polyethylene has pores on its surface, which are traces of foaming, it has the effect of increasing aerodynamic resistance during traveling in the air and further reducing the speed. In addition, compared to the existing rigid ball, the elastic member has a small sound at the time of hitting, and also has an effect of improving quietness in a room.

Referring to FIGS. 2 and 3, the rebound resilience, which is a characteristic that provides the above-described effects, will be described. First, the definition of the rebound resilience in the present invention will be described. In a windless space, the ball is freely dropped vertically at a height of 1 m from the object, and the maximum reaching height of the ball due to the first rebound is measured. 100 to this maximum height (expressed in meters)
Is defined as the rebound resilience (%). Based on this definition, the rebound resilience of the ball 1 and the ball 2 with respect to the existing table was measured. As an existing table, which is the object 3, a part of a 20 mm thick Rawan material used for the table was prepared as a test piece. The characteristic values in FIG. 3 are obtained by multiplying the average value of five repeated measurements by 100. The following can be said from the characteristic values in FIG. The resilience of the ball 1 with respect to the existing table is 58%, and the resilience of the ball 2 is 74%. This means that the ball 1 does not hit the existing table more than the ball 2 (this phenomenon is hereinafter referred to as a characteristic A). Characteristic A
In order to verify, I actually played table tennis. When playing table tennis using the ball 1 and the existing table, the ball bounce is smaller than when playing table tennis using the ball 2 and the existing table, and the hit ball is captured with a relatively small motion. I was able to do it. In addition, it was possible to experience that the speed of the ball in the air was low, and controllability of returning the ball was also improved.

An embodiment of the table tennis table of the present invention will be described with reference to FIGS. FIG. 4A is a front view of the table tennis table according to the present embodiment, and FIG.
4B shows a side view of the table tennis table of the present embodiment, FIG. 4C shows a top view of the table tennis table of the present embodiment, and FIG. 4D shows table tennis of the present embodiment. 1 shows an overall perspective view of a table for use. FIG. 5 is a cross-sectional view of the flat plate 4 in FIG. 4, FIG. 5 (a) shows a configuration made of only a cardboard material according to an embodiment of the present invention, and FIG. 14A shows a configuration using a composite material according to an embodiment different from FIG. In FIG. 4 (a), the table for a table tennis according to the present embodiment holds the flat plate 4 at a predetermined height on the leg material 5, and at a position where the flat plate 4 is bisected, an elasticity corresponding to a net in a formal game is provided. Is adopted. The outer dimension of the flat plate 4 is 180 degrees long as shown in FIG.
0mm, short side is 800mm, 2 of existing table
It has a occupied area of about / 3 Also, the corners of the 4 sums are R
A shape is formed, and the radius is set to 50 mm. Leg material 5
Is made of corrugated cardboard, and has a structure having a rigidity that can withstand the load of the flat plate 4 in combination with a cross as shown in FIG. Two types of flat plates 4 have been proposed as embodiments. FIG.
(A) indicates that the cardboard board is laminated, and three cardboard boards are stacked and adhered to each other to reduce the total thickness to about 15 mm.
And FIG. 5 (b) shows that the flat plate 4 is composed of a laminated structure 41 of a different material including a cardboard board.
2. Composed of plywood 413 bonded together.

The operation of the table tennis table according to the present embodiment will be described. By making the outer shape smaller than the existing table, it is possible to play table tennis in a relatively small space. Further, since the four corners of the flat plate 3 are formed in a relatively large R shape of 50 mm, the possibility of injury is extremely small even if a bump or the like is hit. Further, since the flat plate 3 and the leg members 4 are made of corrugated cardboard, the weight becomes much lighter than the existing table, and the installation and transportability are improved. Next, the rebound resilience of the ball 1 and the ball 2 with respect to the table tennis table of the present embodiment will be described with reference to FIG. In accordance with the above-described measurement method and measurement procedure, the resilience of the ball 1 and the ball 2 with respect to a test piece of a table tennis table (shown in FIG. 5A) in which the flat plate 4 is formed only of a cardboard plate was measured. FIG. 6 is a table for comparing the characteristic values.
The following can be said from FIG. The rebound resilience of the ball 1 with respect to a flat plate composed of only the cardboard boards is 58%, and the rebound resilience of the ball 2 is 37%. This means that the ball 1 is more resilient than the ball 2 with respect to a flat plate composed only of cardboard boards, and the degree of the ball 1 is approximately the same as the degree of the existing plate. Characteristic B).

In order to verify the phenomenon B, we actually played table tennis. As a result, it has been found that there is a large difference between the ball 1 and the ball 2 in the execution of the game. When table tennis is performed using a table tennis table having a flat plate composed of only the ball 1 and a cardboard board, the operation for catching a hit ball and the bodily sensation with respect to the speed of the ball in the air are as follows.
And table tennis using the existing table. On the other hand, if table tennis is performed using the ball 2 and a table tennis table having a flat plate made of only a laminate of cardboard boards, the ball 2 hardly bounces, and the racket must be considerably pressed to return to the opponent's court. I had to shake it. In this case, the fun of the rally could not be felt. We thought that the table tennis table could be made even smaller in order to improve this rallying problem. However, a longitudinal dimension of 1600 mm and a lateral dimension of 600
At a table tennis table of less than mm, the players felt too close to each other, and it was felt that the playability was inferior in view of taking a forward leaning posture and swinging their arms on the court.
It was also attempted to play table tennis using the ball 1 and a table tennis table having a flat plate (shown in FIG. 5B) having a laminated structure of different materials including a cardboard board. As a result, the action for catching the hit ball and the bodily sensation with respect to the speed of the ball in the air are almost the same as those in the case where the table tennis is performed using the table tennis table having the flat plate composed only of the ball 1 and the cardboard board. there were. The main part that governs the degree of momentum is the cardboard board 412 and the nonwoven cloth 4 on the surface.
11 and the effect of the plywood 413 corresponding to the backing can be said to be small. By adopting a laminated structure of different materials,
The decorativeness and rigidity of (1) are improved, and the commercial value can be expected to be improved.

The relationship of the rebound resilience between the ball 1 and the cardboard board can be applied to the relationship between the ball and the racket.
FIG. 12 is a schematic view of a racket according to an embodiment of the present invention. The racket 10 is a core material 10 made of chip cardboard.
The hitting part 102 made of a cardboard board is adhered to both sides of 3,
Further, a grip portion 101 for grasping is adhered to an end of the striking surface 102. The reason why the core material 103 is made of chip cardboard is that the material is close to the corrugated cardboard, so that the rebound resilience can be expected to be equivalent to that of the corrugated cardboard, and because it is a solid body, it is rigid and lightweight. . The hitting by the racket moderately lowers the degree of bouncing as compared with the existing racket for table tennis, so that the opponent can easily hit back. Further, the production cost can be significantly reduced as compared with the existing table tennis racket. In the embodiment, a pen holder type, which is an existing racket type, is explicitly described. However, the present invention is not limited to this. For example, a shake hand type does not impair the effects of the present invention.

In the description of paragraphs 0017 to 0019, the embodiment in which the table tennis table is made of cardboard has been described, but as long as the table tennis ball 1 according to the present invention is used, the table tennis table has the characteristic A, It is quite possible to play a game of table tennis using a table tennis table made of the above material. Therefore, the effect of making the outer dimensions of the flat plate the same as that shown in FIG. 4 and the effect of making the corners of the four corners R-shaped are exhibited even if the material of the flat plate 4 is made harder. Can be. For example, the flat plate 4 may be made of wood or urethane foam. The wooden flat plate has an amusement when using an existing table, and has the effect of being more durable than a cardboard plate. The urethane foam flat plate has intermediate characteristics between a wooden flat plate and a cardboard flat plate in terms of playability, durability and weight. These materials may be selected according to the setting of the product life and price.

Next, an embodiment of a table tennis table with improved entertainment will be described. The existing table is designed to capture a fast white ball in the competition, and a single dark green surface is used for the ball game in consideration of visibility. However, when playing table tennis in a game, besides competing at the speed of the hit ball, if it is possible to play with the realism of other ball games, the recreational nature will be expanded accordingly. In addition, as described above, according to the configuration of the present invention, since the speed of the hit ball is low, the ball can be visually recognized even on the designed ball game use surface. FIG. 7 shows a table tennis table having a design reminiscent of a soccer field. The table 7 has the same configuration as the table tennis table of FIG. 4 except that the goal plate 71 is fixed at a position corresponding to the goal of soccer. The players return the ball to each other toward the goal plate. The material of the goal plate 71 is not limited to sponge, rubber, plastic and the like. FIG. 8 shows a table tennis table having a design reminiscent of a basketball court. The table 8 has the same configuration as the table tennis table of FIG. 4 except that the goal plate 81 is fixed at a position corresponding to the goal of the basket. The material of the goal plate 81 is not limited as in the table tennis table designed for the soccer field. FIG. 9 shows a table tennis table having a design reminiscent of a golf course green. In this case, the distance between the two tables 9 can be freely selected without going through a net, and a hole 91 simulating a golf hole is provided at an arbitrary position on the table. The players return the ball to each other at this hole.

The following idea is possible by utilizing the property of a table tennis table for play. Since there is no restriction on visibility, an advertisement design is given on the ball game usage surface as shown in FIG.
Productivity can also be improved. Further, since there is no restriction on formal competitions, a table tennis table for performing a doubles game in which the ball game use surface is divided into four surfaces as shown in FIG. 11 is also possible.

[0024]

As described above, the present invention produces various effects by utilizing the characteristics of the resilient members of the elastic member and the cardboard. Since the momentum is small and the hitting speed is low, the size of the table tennis table and the exclusive space required for play can be reduced, and table tennis can be spread from entertainment at facilities to entertainment at private homes. In addition, the effects of the momentum and the speed can also facilitate the skill, so that the elderly, the young and the physically disabled during rehabilitation are not alienated, and as a result, the number of players can be increased. In addition, focusing on the realism, we decided to incorporate designs that imitate various other sports facilities that were not present on existing table tennis tables for official sports. As a result, variations in the playing method can be expanded, and as a result, the entertainment can be expanded.

[Brief description of the drawings]

FIG. 1 is a diagram showing an outline of a ball according to an embodiment of the present invention and an existing ball.

FIG. 2 is a diagram illustrating a method for measuring a rebound resilience, which is a characteristic according to an embodiment of the present invention.

FIG. 3 is a table comparing the resilience of a ball according to an embodiment of the present invention and an existing table tennis ball with respect to an existing table.

FIG. 4 is a diagram illustrating an outline of a shape of a table for table tennis according to one embodiment of the present invention.

FIG. 5 is a diagram illustrating a cross-sectional view of a flat plate of the table tennis table according to the embodiment of the present invention.

FIG. 6 is a table for comparing the resilience of a ball according to an embodiment of the present invention with an existing table tennis ball with respect to a table according to the embodiment of the present invention;

FIG. 7 is a diagram illustrating a table tennis table designed to be reminiscent of a soccer field according to one embodiment of the present invention.

FIG. 8 is a view showing a table tennis table having a design reminiscent of a basketball court according to one embodiment of the present invention.

FIG. 9 is a diagram illustrating a table tennis table designed to be reminiscent of a golf course green according to an embodiment of the present invention.

FIG. 10 is a diagram illustrating a table tennis table in which an advertisement design is provided on a ball game use surface.

FIG. 11 is a diagram illustrating a table tennis table for performing a doubles game in which a ball game use surface is divided into four surfaces.

FIG. 12 is a schematic view illustrating a racket for table tennis according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Ball 2 ... Ball 3 ... Object 4 ... Flat plate 5 ... Leg material 6 ... Thin plate 7 ... Table 8 ... Table 9 ... Table 10 ... Racket 41 ... Flat plate 71 ... Goal plate 81 ... Goal plate 91 ... Hole 101 ... Grip part 102: hitting portion 103: core material 411: non-woven cloth 412: cardboard board 413: plywood

Claims (10)

[Claims] 1. A table tennis ball comprising an elastic member, wherein a rebound resilience of a cardboard board is 40% or more and 60% or less. 2. The table tennis ball according to claim 1, wherein the diameter is 40 mm or more. 3. The table tennis ball according to claim 1, wherein the ball is made of foamed polyethylene. 4. A table tennis set comprising a table tennis racket having a striking portion for catching and rebounding a hit ball on a flat surface and a grip portion for grasping, and a table tennis ball, wherein the member having the flat surface is cardboard. 4. The table tennis ball according to claim 1, 2 or 3, wherein the table tennis ball is made of a plate.
A table tennis set, characterized by being the table tennis ball described in (1). 5. A table tennis ball and a table tennis table, the table tennis table comprising a flat plate on which the table tennis ball is flipped on an upper surface, and a leg-like member for holding the flat plate at a predetermined height. In the table tennis set, the flat plate has a rectangular planar shape and a longitudinal dimension of 1600.
mm or more and 2000 mm or less, and short dimension is 600 m
m or more and 1000 mm or less, and the table tennis ball is claim 1, claim 2 or claim 3.
A table tennis set comprising the table tennis ball described in 1 above. 6. The table tennis set according to claim 5, wherein said flat plate is made of a cardboard board, a urethane foam board, or a wooden board. 7. The table tennis set according to claim 5, wherein a corner of the flat plate has an R shape having a radius of 50 mm or more. 8. A figure or pattern reminiscent of a soccer ground, a basketball court, a green of a golf course or other sports facilities is given to the upper surface of the flat plate, and a target is set on a part of the upper surface when hitting the ball. The table tennis set according to claim 5, 6 or 7, wherein a member or a hole is provided. 9. A table tennis ball and a table tennis table, wherein the table tennis table has a flat plate on which the table tennis ball is flipped on the upper surface, and a leg-like member for holding the flat plate at a predetermined height. 4. A table tennis set comprising: a table, a document, a graphic, or a pattern for the purpose of advertising a product or a service on the upper surface; and the table tennis ball is claim 1, claim 2, or claim 3.
A table tennis set comprising the table tennis ball described in 1 above. 10. A table tennis ball and a table tennis table, wherein the table tennis table has a flat plate on which the table tennis ball is flipped on an upper surface, and a leg-like member for holding the flat plate at a predetermined height. A table tennis set comprising: a partition member on the flat plate for distinguishing one's court from the other's court; wherein the partition member divides the upper surface into four surfaces; Claim 2 or Claim 3
A table tennis set comprising the table tennis ball described in 1 above.