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WO2022168960A1 - Practice ball - Google Patents

Practice ball Download PDF

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Publication number
WO2022168960A1
WO2022168960A1 PCT/JP2022/004546 JP2022004546W WO2022168960A1 WO 2022168960 A1 WO2022168960 A1 WO 2022168960A1 JP 2022004546 W JP2022004546 W JP 2022004546W WO 2022168960 A1 WO2022168960 A1 WO 2022168960A1
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Prior art keywords
ball
practice
practice ball
rubber tubes
air
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PCT/JP2022/004546
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French (fr)
Japanese (ja)
Inventor
達樹 永松
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達樹 永松
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Publication of WO2022168960A1 publication Critical patent/WO2022168960A1/en

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B41/00—Hollow inflatable balls
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B41/00—Hollow inflatable balls
    • A63B41/02—Bladders
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B43/00—Balls with special arrangements
    • A63B43/04—Balls with special arrangements with an eccentric centre of gravity; with mechanism for changing the centre of gravity
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports

Definitions

  • the present invention relates to practice balls.
  • practice balls used for practicing irregular bounces in ball games have a configuration in which the ball has protrusions that cause irregular bounces, as shown in Patent Document 1, 2, a configuration is considered in which a weight or the like is provided inside the ball to eccentrically move the ball.
  • the present invention has been made to solve the above-mentioned problems, and in a practice ball, it is possible to cause irregular behavior without greatly changing the shape of the ball itself or attaching a weight to make it eccentric. This is the main issue.
  • the practice ball according to the present invention comprises a spherical outer shell and a plurality of mutually independent rubber tubes accommodated inside the outer shell, and is configured so that the air pressure of each of the plurality of rubber tubes can be adjusted independently. characterized by being
  • the inside of the outer skin contains polystyrene foam for mass adjustment.
  • FIG. 1 is a cross-sectional view showing the deflated structure of a practice ball according to an embodiment of the present invention
  • FIG. FIG. 4 is a cross-sectional view showing the structure of the practice ball according to the same embodiment in which air is put.
  • FIG. 11 is a cross-sectional view showing the structure of a practice ball inflated according to a modified embodiment
  • FIG. 11 is a cross-sectional view showing the structure of a practice ball in a deflated state according to a modified embodiment
  • FIG. 11 is a cross-sectional view showing the structure of a practice ball inflated according to a modified embodiment;
  • the practice ball 100 according to the present embodiment has a radius similar to that of a soccer ball, for example, so that the trajectory of the ball is not shaken in the air, such as practice corresponding to irregular bounces in soccer and non-spin shots. It can be used for practice corresponding to
  • the practice ball 100 includes a spherical outer shell 2, a plurality of mutually independent rubber tubes 3 accommodated inside the outer shell 2, and the plurality of rubber tubes 3, respectively.
  • air pressure P1, P2, P3, P4 can be adjusted independently.
  • the spherical outer skin 2 is similar to the outer skin used for soccer balls, for example, so that the weight and feel of the practice ball 100 can be made as close as possible to those of a soccer ball. It gives players a hands-on feel.
  • the plurality of rubber tubes 3 can be, for example, all of the same size and material, and as shown in FIGS. P3 and P4 can be adjusted independently.
  • the air pressures P1, P2, P3, and P4 of the plurality of rubber tubes 3 in this way, the magnitude and direction of the repulsive force when the practice ball 100 bounces becomes irregular. behavior can be realized. Furthermore, since the volumes of the plurality of rubber tubes 3 are also different from each other, the plurality of rubber tubes 3 vibrate individually, so that the trajectory of the ball can be shaken.
  • the difference between the mass of a plurality of rubber tubes 3 and the mass of a single rubber tube used for a normal ball is different from that of a conventional practice ball, in which the shape of the ball itself is greatly changed or a weight is attached. very small in comparison.
  • the practice ball 100 it is possible to practice more realistically, and the possibility of injury to a person can be reduced.
  • the air pumps 4 are arranged concentrically with respect to the center of the practice ball 100 at regular intervals.
  • the air pump section 4 can independently adjust the respective air pressures P1, P2, P3, and P4, and the practice ball 100 is placed in the state shown in FIG. to the state shown in FIG.
  • the practice ball 101 according to the present embodiment has a polystyrene foam 5 for mass adjustment housed inside the outer skin 2 of the practice ball 100 .
  • the specific gravity and volume of the foamed polystyrene 5 can be freely changed, thereby adjusting the mass of the practice ball 101 .
  • the air pressure of each rubber tube 3 can be adjusted by accommodating the polystyrene foam 5 .
  • the practice ball 100 can also have the same radius as handball, basketball, volleyball, and dodgeball, and can be used for practice corresponding to irregular bounces in each ball game and practice corresponding to ball trajectories fluctuating in the air. can be used.
  • the spherical shell 2 can be similar to the shells used for handball, basketball, volleyball, and dodgeball, respectively, so that the player can have a more practical feel when practicing each ball game. can.
  • the number of rubber tubes 3 may be two, three, or five or more.
  • the air inlet portion 4 is provided corresponding to each rubber tube 3 .
  • the rubber tubes 3 may have different sizes. Furthermore, the rubber tubes 3 may be made of different materials and may have different specific gravities. By making the sizes, materials, specific gravities, etc. of the plurality of rubber tubes 3 different from each other in this way, it is possible to widen the selection of possible irregular behaviors and to manufacture practice balls according to the intended use.
  • the air pressures P1, P2, P3, and P4 inside the plurality of rubber tubes 3 can be freely adjusted, and all the air pressures P1, P2, P3, and P4 may be the same. In such a case, the practice balls 100, 101 can achieve the same behavior as normal balls.
  • the air pump part 4 may be arranged in any way as long as it is on the surface of the outer skin 2 . Moreover, the shape of the plurality of rubber tubes 3 can be freely set.
  • the styrofoam 5 may be not only spherical, but also ellipsoidal or polyhedral, as shown in FIG. Furthermore, the number is not limited to one, and two or more may be accommodated.
  • the structure of the polystyrene foam 5 may be such that it has recesses that allow each rubber tube 3 to swell while being in contact with or close to the inner surface of the outer skin 2 .
  • the shape of the polystyrene foam 5 may be a shape in which each side surface of a cube is recessed, and the rubber tube 3 is accommodated in the recessed portion.
  • a cushion 6 is provided between the outer skin 2 and the polystyrene foam 5 in order to soften the feeling when the practice ball 100 is kicked or hit.
  • the practice ball 100 may behave irregularly by injecting liquid from the air pump 4 into at least one of the plurality of rubber tubes 3 . It should be noted that the liquid contained in the rubber tube 3 can be removed from the air inlet portion 4 .

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

The present invention provides a practice ball that produces an irregular behavior without significantly changing the shape of the ball itself or making an eccentric movement with a weight, the practice ball being characterized by including a spherical outer skin 2 and a plurality of mutually independent rubber tubes 3 housed inside the outer skin, wherein the plurality of rubber tubes 3 are configured to allow for independent adjustment of respective air pressures P1, P2, P3, and P4 thereof.

Description

練習用ボールpractice ball
　本発明は、練習用ボールに関するものである。 The present invention relates to practice balls.
　従来、球技におけるイレギュラーバウンド等の練習に用いられる練習ボールについては、例えば、特許文献１に示すように、ボールがイレギュラーバウンドを生じさせるような突起を有するような構成のものや、特許文献２に示すように、ボールの内部に、ボールを偏心させるおもり等を設ける構成のものが考えられている。 Conventionally, practice balls used for practicing irregular bounces in ball games, for example, have a configuration in which the ball has protrusions that cause irregular bounces, as shown in Patent Document 1, 2, a configuration is considered in which a weight or the like is provided inside the ball to eccentrically move the ball.
　しかしながら、練習ボールが前記突起を有することにより集中荷重が生じること、又はおもり等によってボール自体の質量が大きくなることにより、練習ボールを使用して練習を行う人が怪我をする恐れがある。 However, due to the fact that the exercise ball has the projections, a concentrated load is generated, or the mass of the ball itself increases due to the weight, etc., and there is a risk of injury to those who practice using the exercise ball.
実開平０３－０００７５７号公報Japanese Utility Model Laid-Open No. 03-000757 実開平０７－０２２７６３号公報Japanese Utility Model Laid-Open No. 07-022763
　本発明は、上記の問題点を解決すべくなされたものであり、練習用ボールにおいて、ボール自体の形状を大きく変えたり、おもりをつけて偏心させたりすることなく、不規則な挙動を生じさせることをその主たる課題とするものである。 The present invention has been made to solve the above-mentioned problems, and in a practice ball, it is possible to cause irregular behavior without greatly changing the shape of the ball itself or attaching a weight to make it eccentric. This is the main issue.
　すなわち本発明に係る練習用ボールは、球状の外皮と、前記外皮の内部に収容された複数の互いに独立したゴムチューブとを備え、前記複数のゴムチューブそれぞれの空気圧を独立して調整可能に構成されたことを特徴とする。 That is, the practice ball according to the present invention comprises a spherical outer shell and a plurality of mutually independent rubber tubes accommodated inside the outer shell, and is configured so that the air pressure of each of the plurality of rubber tubes can be adjusted independently. characterized by being
　このような練習用ボールであれば、複数のゴムチューブの空気圧をそれぞれ異なるものとすることで、バウンド時の反発力の大きさ及び向きが不規則なものとなり、不規則な挙動が実現される。さらに、内部にはおもり等が存在しないことから、通常のボールの質量と同等なものにできる上、外皮が球状であることから、イレギュラーバウンドを生じさせるような突起部分が存在しないため、前記練習用ボールを使用して練習を行う人が怪我をする可能性を低減することができる。 In such a practice ball, by setting the pneumatic pressures of the plurality of rubber tubes to different values, the magnitude and direction of the repulsive force at the time of bouncing becomes irregular, and irregular behavior is realized. . Furthermore, since there is no weight inside, the mass can be equivalent to that of a normal ball. It is possible to reduce the possibility of injury to a person practicing using the practice ball.
　複数のゴムチューブの空気圧の調整をより一層容易なものとするためには、前記複数のゴムチューブそれぞれに対応して複数の空気入れ部が設けられていることが望ましい。 　In order to make it easier to adjust the air pressure of the plurality of rubber tubes, it is desirable to provide a plurality of air inlets corresponding to each of the plurality of rubber tubes.
　練習用ボールの質量、ぶれ具合等について、より調整の幅を広げるためには、前記外皮の内部に、質量調整用の発泡スチロールが収容されていることが望ましい。 In order to widen the range of adjustment for the mass of the practice ball, the degree of blurring, etc., it is desirable that the inside of the outer skin contains polystyrene foam for mass adjustment.
　以上に述べた本発明によれば、練習用ボールにおいて、ボール自体の形状を大きく変えたり、おもりをつけて偏心させたりすることなく、不規則な挙動を生じさせることができる。 According to the present invention described above, in the practice ball, it is possible to cause irregular behavior without greatly changing the shape of the ball itself or attaching a weight to make it eccentric.
本発明の一実施形態に係る練習用ボールの空気が抜かれた状態の構造を示す断面図である。1 is a cross-sectional view showing the deflated structure of a practice ball according to an embodiment of the present invention; FIG. 同実施形態に係る練習用ボールに空気が入れられた状態の構造を示す断面図である。FIG. 4 is a cross-sectional view showing the structure of the practice ball according to the same embodiment in which air is put. 変形実施形態に係る練習用ボールに空気が入れられた状態の構造を示す断面図である。FIG. 11 is a cross-sectional view showing the structure of a practice ball inflated according to a modified embodiment; 変形実施形態に係る練習用ボールに空気が抜かれた状態の構造を示す断面図である。FIG. 11 is a cross-sectional view showing the structure of a practice ball in a deflated state according to a modified embodiment; 変形実施形態に係る練習用ボールに空気が入れられた状態の構造を示す断面図である。FIG. 11 is a cross-sectional view showing the structure of a practice ball inflated according to a modified embodiment;
　以下に、本発明の一実施形態に係る練習用ボールについて、図面を参照して説明する。 A practice ball according to one embodiment of the present invention will be described below with reference to the drawings.
＜本実施形態に係る練習用ボール１００＞
　本実施形態に係る練習用ボール１００は、例えばその半径をサッカーボールと同様にすることで、サッカーにおけるイレギュラーバウンドに対応する練習や、無回転シュートのような、空中でボールの軌道がぶれることに対応する練習に用いることができるものである。 <Practice ball 100 according to the present embodiment>
The practice ball 100 according to the present embodiment has a radius similar to that of a soccer ball, for example, so that the trajectory of the ball is not shaken in the air, such as practice corresponding to irregular bounces in soccer and non-spin shots. It can be used for practice corresponding to
　具体的に練習用ボール１００は、図１及び図２に示すように、球状の外皮２と、外皮２の内部に収容された複数の互いに独立したゴムチューブ３と、前記複数のゴムチューブ３それぞれの空気圧Ｐ１、Ｐ２、Ｐ３、Ｐ４を独立して調整可能な空気入れ部４とを備えている。 Specifically, as shown in FIGS. 1 and 2, the practice ball 100 includes a spherical outer shell 2, a plurality of mutually independent rubber tubes 3 accommodated inside the outer shell 2, and the plurality of rubber tubes 3, respectively. air pressure P1, P2, P3, P4 can be adjusted independently.
　球状の外皮２は、例えばサッカーボールに用いられる外皮と同様のものとすることで、練習用ボール１００の質量や手触りをサッカーボールに限りなく近づけることができ、サッカーの練習に用いた際、より実践的な感覚を選手に与えることができる。 The spherical outer skin 2 is similar to the outer skin used for soccer balls, for example, so that the weight and feel of the practice ball 100 can be made as close as possible to those of a soccer ball. It gives players a hands-on feel.
　複数のゴムチューブ３は、例えば全てのサイズ、素材が同一なものとすることができ、図１及び図２に示すように、空気入れ部４から空気を入れることでそれぞれの空気圧Ｐ１、Ｐ２、Ｐ３、Ｐ４を独立して調整可能なものである。 The plurality of rubber tubes 3 can be, for example, all of the same size and material, and as shown in FIGS. P3 and P4 can be adjusted independently.
　このように複数のゴムチューブ３の空気圧Ｐ１、Ｐ２、Ｐ３、Ｐ４を異なるものとすることで、練習用ボール１００のバウンド時の反発力の大きさ及び向きが不規則なものとなり、不規則な挙動を実現することができる。さらに、複数のゴムチューブ３の体積もそれぞれ異なるものとなるため、複数のゴムチューブ３が個別に振動することにより、ボールの軌道のぶれを実現することができる。 By varying the air pressures P1, P2, P3, and P4 of the plurality of rubber tubes 3 in this way, the magnitude and direction of the repulsive force when the practice ball 100 bounces becomes irregular. behavior can be realized. Furthermore, since the volumes of the plurality of rubber tubes 3 are also different from each other, the plurality of rubber tubes 3 vibrate individually, so that the trajectory of the ball can be shaken.
　加えて、複数のゴムチューブ３の質量と、通常のボールに用いられるゴムチューブ１個の質量との差は、ボール自体の形状を大きく変えたり、おもりをつけたりした従来の練習用ボールの場合と比べて非常に小さいものとなる。これにより、練習用ボール１００を使用して練習を行う際、より実践に近い練習が可能となる上、人が怪我をする可能性を低減することもできる。 In addition, the difference between the mass of a plurality of rubber tubes 3 and the mass of a single rubber tube used for a normal ball is different from that of a conventional practice ball, in which the shape of the ball itself is greatly changed or a weight is attached. very small in comparison. As a result, when practicing using the practice ball 100, it is possible to practice more realistically, and the possibility of injury to a person can be reduced.
　空気入れ部４は、本実施形態では、図１及び図２に示すように、練習用ボール１００の中心に対して同心円上に等間隔に配置される。この空気入れ部４は、複数のゴムチューブ３に空気を注入することで、それぞれの空気圧Ｐ１、Ｐ２、Ｐ３、Ｐ４を独立して調整することができ、練習用ボール１００を図１に示す状態から図２に示す状態にすることができる。 In this embodiment, as shown in FIGS. 1 and 2, the air pumps 4 are arranged concentrically with respect to the center of the practice ball 100 at regular intervals. By injecting air into a plurality of rubber tubes 3, the air pump section 4 can independently adjust the respective air pressures P1, P2, P3, and P4, and the practice ball 100 is placed in the state shown in FIG. to the state shown in FIG.
＜本実施形態の効果＞
　本実施形態の練習用ボール１００であれば、複数のゴムチューブ３の空気圧Ｐ１、Ｐ２、Ｐ３、Ｐ４をそれぞれ異なるものとすることで、バウンド時の反発力の大きさ及び向きが不規則なものとなり、不規則な挙動が実現される。さらに、内部にはおもり等が存在しないことから、通常のボールの質量と同等なものにできる上、外皮２が球状であることから、イレギュラーバウンドを生じさせるような突起部分が存在しないため、練習用ボール１００を使用して練習を行う人が怪我をする可能性を低減することができる。 <Effects of this embodiment>
With the practice ball 100 of the present embodiment, the pneumatic pressures P1, P2, P3, and P4 of the plurality of rubber tubes 3 are made different, so that the magnitude and direction of the repulsive force at the time of bouncing are irregular. and an irregular behavior is realized. Furthermore, since there is no weight or the like inside, the mass can be equivalent to that of a normal ball. The possibility of injury to a person practicing using the practice ball 100 can be reduced.
＜変形実施形態に係る練習用ボール１０１＞
　本実施形態に係る練習用ボール１０１は、図３に示すように、練習用ボール１００における外皮２の内部に、質量調整用の発泡スチロール５が収容されている。 <Practice ball 101 according to modified embodiment>
As shown in FIG. 3, the practice ball 101 according to the present embodiment has a polystyrene foam 5 for mass adjustment housed inside the outer skin 2 of the practice ball 100 .
　発泡スチロール５は、その比重、体積を自由に変えることができ、これによって、練習用ボール１０１の質量を調整することができる。また、発泡スチロール５を収容することによって、各ゴムチューブ３の空気圧を調整することもできる。 The specific gravity and volume of the foamed polystyrene 5 can be freely changed, thereby adjusting the mass of the practice ball 101 . Moreover, the air pressure of each rubber tube 3 can be adjusted by accommodating the polystyrene foam 5 .
　また、発泡スチロール５の体積を自由に変えることで、例えば、前記複数のゴムチューブ３の各ゴムチューブ３の振動を抑制し、練習用ボール１０１の軌道のぶれ具合を調整することもできる。 Also, by freely changing the volume of the polystyrene foam 5, for example, it is possible to suppress the vibration of each rubber tube 3 of the plurality of rubber tubes 3 and adjust the degree of deviation of the trajectory of the practice ball 101.
＜その他の実施形態＞
　練習用ボール１００は、ハンドボール、バスケットボール、バレーボール及びドッヂボールとそれぞれ同様の半径にすることもでき、各球技におけるイレギュラーバウンドに対応する練習や、空中でボールの軌道がぶれることに対応する練習に用いることができる。この場合、球状の外皮２は、ハンドボール、バスケットボール、バレーボール及びドッヂボールにそれぞれ用いられる外皮と同様のものにもでき、各球技の練習に用いた際、より実践的な感覚を選手に与えることができる。 <Other embodiments>
The practice ball 100 can also have the same radius as handball, basketball, volleyball, and dodgeball, and can be used for practice corresponding to irregular bounces in each ball game and practice corresponding to ball trajectories fluctuating in the air. can be used. In this case, the spherical shell 2 can be similar to the shells used for handball, basketball, volleyball, and dodgeball, respectively, so that the player can have a more practical feel when practicing each ball game. can.
　前記実施形態のゴムチューブ３は４つであったが、ゴムチューブ３は２つ、３つ、又は５つ以上であっても良い。この場合、空気入れ部４はゴムチューブ３それぞれに対応して設けられる。 Although there were four rubber tubes 3 in the above embodiment, the number of rubber tubes 3 may be two, three, or five or more. In this case, the air inlet portion 4 is provided corresponding to each rubber tube 3 .
　また、ゴムチューブ３は、図４に示すように、互いに異なるサイズのものであっても良い。さらに、ゴムチューブ３は、互いに異なる材質のものであっても良いし、互いに異なる比重のものであっても良い。このように複数のゴムチューブ３のサイズ、材質、比重などを互いに異ならせることによって、採りうる不規則な挙動の選択の幅広がり、用途に応じた練習用ボールを製作することができる。 Also, as shown in FIG. 4, the rubber tubes 3 may have different sizes. Furthermore, the rubber tubes 3 may be made of different materials and may have different specific gravities. By making the sizes, materials, specific gravities, etc. of the plurality of rubber tubes 3 different from each other in this way, it is possible to widen the selection of possible irregular behaviors and to manufacture practice balls according to the intended use.
　複数のゴムチューブ３内の空気圧Ｐ１、Ｐ２、Ｐ３、Ｐ４は、それぞれ自由に調整可能であって、すべての空気圧Ｐ１、Ｐ２、Ｐ３、Ｐ４は同一であっても良い。こうした場合、練習用ボール１００、１０１は通常のボールと同様の挙動を実現することができる。 The air pressures P1, P2, P3, and P4 inside the plurality of rubber tubes 3 can be freely adjusted, and all the air pressures P1, P2, P3, and P4 may be the same. In such a case, the practice balls 100, 101 can achieve the same behavior as normal balls.
　空気入れ部４は、外皮２の表面部であれば、どのように配置されていても良い。また、複数のゴムチューブ３の形状は自由に設定することができる。 The air pump part 4 may be arranged in any way as long as it is on the surface of the outer skin 2 . Moreover, the shape of the plurality of rubber tubes 3 can be freely set.
　発泡スチロール５は、図３に示すように、球体のものだけでなく、楕円体や多角体であってもよい。さらに、その数は１つに限らず、２つ以上収容されていてもよい。 The styrofoam 5 may be not only spherical, but also ellipsoidal or polyhedral, as shown in FIG. Furthermore, the number is not limited to one, and two or more may be accommodated.
　また、発泡スチロール５の構成としては、図５に示すように、外皮２の内面に接触又は近接しつつ、各ゴムチューブ３が膨らむことができる凹部を有するものとしても良い。例えば、発泡スチロール５の形状としては、立方体形状の各側面を凹ませる形状とし、当該凹ませた部分にゴムチューブ３が収容される形状とすることができる。図５では、練習用ボール１００を蹴った時又は叩いた時の感触を和らげるために、外皮２と発泡スチロール５との間にクッション６を設けている。 Also, as shown in FIG. 5, the structure of the polystyrene foam 5 may be such that it has recesses that allow each rubber tube 3 to swell while being in contact with or close to the inner surface of the outer skin 2 . For example, the shape of the polystyrene foam 5 may be a shape in which each side surface of a cube is recessed, and the rubber tube 3 is accommodated in the recessed portion. In FIG. 5, a cushion 6 is provided between the outer skin 2 and the polystyrene foam 5 in order to soften the feeling when the practice ball 100 is kicked or hit.
　さらに空気入れ部４から複数のゴムチューブ３の少なくとも１つに液体を入れることによって、練習用ボール１００が不規則な挙動をするようにしても良い。なお、ゴムチューブ３に入れた液体は空気入れ部４から取り除くことができる。 Further, the practice ball 100 may behave irregularly by injecting liquid from the air pump 4 into at least one of the plurality of rubber tubes 3 . It should be noted that the liquid contained in the rubber tube 3 can be removed from the air inlet portion 4 .
　その他、本発明の趣旨に反しない限りにおいて様々な実施形態の変形や組み合わせを行っても構わない。 In addition, various modifications and combinations of the embodiments may be made as long as they do not contradict the spirit of the present invention.
１００・・・練習用ボール
１０１・・・練習用ボール
２・・・外皮
３・・・ゴムチューブ
４・・・空気入れ部
５・・・発泡スチロール 100 Practice ball 101 Practice ball 2 Envelope 3 Rubber tube 4 Air pump 5 Styrofoam
　本発明によれば、ボール自体の形状を大きく変えたり、おもりをつけて偏心させたりすることなく、不規則な挙動を生じさせる練習用ボールを提供することができる。 According to the present invention, it is possible to provide a practice ball that causes irregular behavior without significantly changing the shape of the ball itself or adding a weight to make it eccentric.

Claims (3)

  1. 　球状の外皮と、外皮の内部に収容された複数の互いに独立したゴムチューブとを備え、前記複数のゴムチューブそれぞれの空気圧を独立して調整可能に構成された練習用ボール。 A practice ball comprising a spherical outer shell and a plurality of mutually independent rubber tubes accommodated inside the outer shell, wherein the air pressure of each of the plurality of rubber tubes can be adjusted independently.
  2. 　前記複数のゴムチューブそれぞれに対応して複数の空気入れ部が設けられていることを特徴とする、請求項１に記載の練習用ボール。 The practice ball according to claim 1, characterized in that a plurality of air pumps are provided corresponding to each of the plurality of rubber tubes.
  3. 　前記外皮の内部に、質量調整用の発泡スチロールが収容されていることを特徴とする、請求項１に記載の練習用ボール。 The practice ball according to claim 1, characterized in that styrene foam for mass adjustment is accommodated inside the outer skin.
PCT/JP2022/004546 2021-02-08 2022-02-04 Practice ball WO2022168960A1 (en)

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JP2021018418 2021-02-08
JP2021-018418 2021-02-08
JP2021-067162 2021-04-12
JP2021067162 2021-04-12

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01293882A (en) * 1988-03-30 1989-11-27 Pressers Internatl Prod Inc Expansible ball
US6093077A (en) * 1996-04-10 2000-07-25 Spector; Donald Head-like pneumatic play ball
WO2005044396A2 (en) * 2003-10-28 2005-05-19 Helmut Staudt Ball that is divided into compartments and contains integrated electronic transmission means
US20080064542A1 (en) * 2006-09-13 2008-03-13 Donald Spector Inflatable play ball
US20090318054A1 (en) * 2008-06-20 2009-12-24 Wong Jacob Y Inflatable ball with predictable movements
JP2013141513A (en) * 2012-01-10 2013-07-22 Shinji Katsuyama Transparent ball for ball game
JP2021069416A (en) * 2019-10-29 2021-05-06 ドリームフォレスト株式会社 Sensor device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01293882A (en) * 1988-03-30 1989-11-27 Pressers Internatl Prod Inc Expansible ball
US6093077A (en) * 1996-04-10 2000-07-25 Spector; Donald Head-like pneumatic play ball
WO2005044396A2 (en) * 2003-10-28 2005-05-19 Helmut Staudt Ball that is divided into compartments and contains integrated electronic transmission means
US20080064542A1 (en) * 2006-09-13 2008-03-13 Donald Spector Inflatable play ball
US20090318054A1 (en) * 2008-06-20 2009-12-24 Wong Jacob Y Inflatable ball with predictable movements
JP2013141513A (en) * 2012-01-10 2013-07-22 Shinji Katsuyama Transparent ball for ball game
JP2021069416A (en) * 2019-10-29 2021-05-06 ドリームフォレスト株式会社 Sensor device

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