JP6018879B2 - Ball for ball game - Google Patents

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JP6018879B2
JP6018879B2 JP2012243736A JP2012243736A JP6018879B2 JP 6018879 B2 JP6018879 B2 JP 6018879B2 JP 2012243736 A JP2012243736 A JP 2012243736A JP 2012243736 A JP2012243736 A JP 2012243736A JP 6018879 B2 JP6018879 B2 JP 6018879B2
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axis
sphere
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ball
golf
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JP2014090915A (en
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恵実 片山
恵実 片山
陽右 大冢
陽右 大冢
祐也 小塚
祐也 小塚
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Asics Corp
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Description

この発明は、接地面の影響を受け難い直進性に優れた競技用ボール、特にパークゴルフ用、グラウンドゴルフ用として好適な競技用ボールに関するものである。   The present invention relates to a game ball that is not easily affected by a ground contact surface and excellent in straight running performance, and more particularly to a game ball suitable for park golf and ground golf.

ボールを打撃するスポーツとしては、野球、テニス、ゴルフの他、最近では、グランドゴルフやパークゴルフも盛んである。   In addition to baseball, tennis, and golf, recently, grand golf and park golf are also popular.

ゴルフと、グランドゴルフやパークゴルフでは、ボールに求められる特性が異なる。   Golf, ground golf and park golf have different characteristics required for the ball.

ゴルフの場合は、打撃による到達距離のうち、９割がキャリー、残りがランであるのに対し、グランドゴルフやパークゴルフの場合は、キャリーよりもランの方が大きくなるように設計され、接地後のボールの直進性が要求される。   In the case of golf, 90% of the hit distance is carry and the rest is run, while in the case of grand golf or park golf, the run is designed to be larger than carry and Later straightness of the ball is required.

このランに及ぼす影響因子としては、ボールの慣性モーメントがあり、この慣性モーメントに着目して、ボールの直進性、コントロール性を向上させたパークゴルフ用ボールが特許文献１に開示されている。   As an influencing factor on the run, there is a moment of inertia of the ball. Patent Document 1 discloses a park golf ball in which the straightness and controllability of the ball are improved by paying attention to the moment of inertia.

特開２００５−８０８４４号公報Japanese Patent Laid-Open No. 2005-80844

ところで、ボールの慣性モーメントは、従来、ボールの中心を通る互いに直交する３本のｘ軸、ｙ軸、ｚ軸のいずれの軸でも、同じ値になるように設計されるのが技術常識になっている。   By the way, it has become common technical knowledge that the moment of inertia of a ball is conventionally designed to have the same value in any of the three x-axis, y-axis, and z-axis that pass through the center of the ball and are orthogonal to each other. ing.

そこで、この発明は、ボールの中心を通る互いに直交する３本のｘ軸、ｙ軸、ｚ軸のいずれの軸でも、慣性モーメントが同じ値になるように設計するというボール設計の技術常識を打破し、打撃したボールが地面に接地した際における接地面の影響が受け難い、直進性に優れた、特に、グランドゴルフやパークゴルフに適したボールを得ることを課題とするものである。   Therefore, the present invention breaks down the common general knowledge of ball design that the moment of inertia is designed to be the same in any of the three x-axis, y-axis and z-axis orthogonal to each other passing through the center of the ball. However, it is an object of the present invention to obtain a ball that is not easily affected by the ground contact surface when the hit ball touches the ground and has excellent straightness, particularly suitable for ground golf and park golf.

この発明の球技用ボールは、球体の中心を通る互いに直交する３本のｘ軸、ｙ軸とｚ軸のうち、ｙ軸とｚ軸の慣性モーメントが等しく、ｘ軸の慣性モーメントが、ｙ軸とｚ軸の慣性モーメントよりも大きく設定している。   In the ball for ball game of the present invention, among three orthogonal x-axes passing through the center of the sphere, y-axis and z-axis, the y-axis and z-axis moments of inertia are equal, and the x-axis moment of inertia is y-axis And larger than the moment of inertia of the z axis.

このように、球体の中心を通る互いに直交する３本のｘ軸、ｙ軸とｚ軸のうち、ｘ軸の回りの慣性モーメントを、他の２軸の回りの慣性モーメントよりも大きくすると、ｘ軸の回りの大きな慣性モーメントにより、ボールが地面に接地した際に、接地面の影響を受け難く、ｘ軸を中心に回転し易く、ボールの直進性が向上する。   As described above, when the inertia moment around the x-axis among the three x-axis, y-axis, and z-axis that are orthogonal to each other passing through the center of the sphere is larger than the inertia moment around the other two axes, x Due to the large moment of inertia around the axis, when the ball touches the ground, it is not easily affected by the contact surface, easily rotates around the x axis, and the straightness of the ball is improved.

球体の中心を通る互いに直交する３本のｘ軸、ｙ軸とｚ軸のうち、ｘ軸の回りの慣性モーメントを、他の２軸の回りの慣性モーメントよりも大きくするには、球体の中心を通る前記ｘ軸に長軸、ｙ軸とｚ軸に同一長さの短軸を有する中空のコア部を配置する方法を採用する。 Three x-axis orthogonal to each other through the center of the sphere, of the y-axis and z-axis, the moment of inertia about the x-axis, to be greater than the moment of inertia about the other two axes, the center of the sphere A method is adopted in which a hollow core portion having a major axis on the x-axis passing through and a minor axis having the same length on the y-axis and the z-axis is disposed.

この発明の球技用ボールは、ボールが地面に接地した際に、接地面の影響を受け難く、ｘ軸を中心に回転し易く、ボールの直進性に優れているので、グランドゴルフやパークゴルフに好適に使用することができる。   The ball game ball of the present invention is not easily affected by the contact surface when the ball contacts the ground, is easy to rotate around the x axis, and has excellent straightness of the ball. It can be preferably used.

（ａ）はこの発明の球技用ボールの第１の実施形態を示す中央縦断面図であり、（ｂ）は（ａ）のｙ軸を中心に９０度回転した状態を示す中央縦断面図である。(A) is the center longitudinal cross-sectional view which shows 1st Embodiment of the ball for ball games of this invention, (b) is the center longitudinal cross-sectional view which shows the state rotated 90 degree | times centering on the y-axis of (a). is there. （ａ）はこの発明の球技用ボールの第２の実施形態を示す中央縦断面図であり、（ｂ）は（ａ）のｙ軸を中心に９０度回転した状態を示す中央縦断面図である。(A) is a center longitudinal cross-sectional view which shows 2nd Embodiment of the ball for ball games of this invention, (b) is a center longitudinal cross-sectional view which shows the state rotated 90 degree | times centering on the y-axis of (a). is there. （ａ）はこの発明の球技用ボールの第３の実施形態を示す中央縦断面図であり、（ｂ）は（ａ）のｙ軸を中心に９０度回転した状態を示す中央縦断面図である。(A) is a center longitudinal cross-sectional view which shows 3rd Embodiment of the ball for ball games of this invention, (b) is a center longitudinal cross-sectional view which shows the state rotated 90 degree | times centering on the y-axis of (a). is there. （ａ）はこの発明の球技用ボールの第４の実施形態を示す中央縦断面図であり、（ｂ）は（ａ）のｙ軸を中心に９０度回転した状態を示す中央縦断面図である。(A) is a center longitudinal cross-sectional view which shows 4th Embodiment of the ball for ball games of this invention, (b) is a center longitudinal cross-sectional view which shows the state rotated 90 degree | times centering on the y-axis of (a). is there. （ａ）はこの発明の球技用ボールの第５の実施形態を示す中央縦断面図であり、（ｂ）は（ａ）のｙ軸を中心に９０度回転した状態を示す中央縦断面図である。(A) is a center longitudinal cross-sectional view which shows 5th Embodiment of the ball for ball games of this invention, (b) is a center longitudinal cross-sectional view which shows the state rotated 90 degree | times centering on the y-axis of (a). is there. （ａ）はこの発明の球技用ボールの第６の実施形態を示す中央縦断面図であり、（ｂ）は（ａ）のｙ軸を中心に９０度回転した状態を示す中央縦断面図である。(A) is the center longitudinal cross-sectional view which shows 6th Embodiment of the ball for ball games of this invention, (b) is the center longitudinal cross-sectional view which shows the state rotated 90 degree | times centering on the y-axis of (a). is there. （ａ）はこの発明の球技用ボールの第７の実施形態を示す中央縦断面図であり、（ｂ）は（ａ）のｙ軸を中心に９０度回転した状態を示す中央縦断面図である。(A) is the center longitudinal cross-sectional view which shows 7th Embodiment of the ball for ball games of this invention, (b) is the center longitudinal cross-sectional view which shows the state rotated 90 degree | times centering on the y-axis of (a). is there. （ａ）はこの発明の球技用ボールの第８の実施形態を示す中央縦断面図であり、（ｂ）は（ａ）のｙ軸を中心に９０度回転した状態を示す中央縦断面図である。(A) is the center longitudinal cross-sectional view which shows 8th Embodiment of the ball for ball games of this invention, (b) is the center longitudinal cross-sectional view which shows the state rotated 90 degree | times centering on the y-axis of (a). is there. （ａ）はこの発明の球技用ボールの第９の実施形態を示す中央縦断面図であり、（ｂ）は（ａ）のｙ軸を中心に９０度回転した状態を示す中央縦断面図である。(A) is the center longitudinal cross-sectional view which shows 9th Embodiment of the ball for ball games of this invention, (b) is the center longitudinal cross-sectional view which shows the state rotated 90 degree | times centering on the y-axis of (a). is there.

この発明の実施形態を図１〜図９を用いて説明する。この発明の実施形態は、図１、図２および図５に示す３つの形態、並びにそれらの組合せをベースに、適宜、中空あるいは低密度素材や、高密度素材を配置することによって実現することができる。ただし、この発明の範囲は図１〜図９に示す形態には限定されず、種々の変更が可能である。
この発明の球技用ボール１は、球体の中心を通る互いに直交する３本のｘ軸、ｙ軸とｚ軸のうち、ｙ軸とｚ軸の慣性モーメントが等しく、ｘ軸の慣性モーメントが、ｙ軸とｚ軸の慣性モーメントよりも大きく設定したものである。
図１は、この発明の第１の実施形態の球技用ボール１を示し、この実施形態では、球体２の中心に、ｘ軸に長軸、ｙ軸とｚ軸に同一長さの短軸を有する中空あるいは低密度素材からなる、カプセル型のコア部３を球体２の中心に設けることによって、球体２の中心を通るｘ軸、ｙ軸とｚ軸のうち、ｙ軸とｚ軸の慣性モーメントが等しく、ｘ軸の慣性モーメントが、ｙ軸とｚ軸の慣性モーメントよりも大きくなるように設定している。 An embodiment of the present invention will be described with reference to FIGS. The embodiment of the present invention can be realized by appropriately arranging a hollow or low-density material or a high-density material based on the three forms shown in FIGS. 1, 2 and 5 and combinations thereof. it can. However, the scope of the present invention is not limited to the forms shown in FIGS. 1 to 9 and various modifications can be made.
In the ball game ball 1 of the present invention, among the three x-axis, y-axis, and z-axis that pass through the center of the sphere and are orthogonal to each other, the y-axis and z-axis moments of inertia are equal, and the x-axis moment of inertia is y The moment of inertia of the axis and the z axis is set larger.
FIG. 1 shows a ball game ball 1 according to a first embodiment of the present invention. In this embodiment, a sphere 2 has a long axis at the center of the x axis and a short axis of the same length as the y axis and the z axis. By providing a capsule-shaped core 3 made of a hollow or low-density material at the center of the sphere 2, the moment of inertia of the y-axis and z-axis among the x-axis, y-axis, and z-axis passing through the center of the sphere 2 Are set so that the moment of inertia of the x-axis is larger than the moment of inertia of the y-axis and the z-axis.

例えば、グランドゴルフで使用する球技用ボール１は、重量が９５ｇ以下で、下限が８０ｇと定められているので、球体２の中心に、中空あるいは低密度素材からなるコア部３を設けると、全体の重量が軽くなるので、球体２の素材の密度を、コア部３を設けない場合よりも高密度にして、全体の重量が前記の規定範囲内に入るように調整する。   For example, the ball 1 for use in grand golf has a weight of 95 g or less and a lower limit of 80 g. Therefore, if the core 3 made of a hollow or low-density material is provided at the center of the sphere 2, Therefore, the density of the material of the sphere 2 is adjusted to be higher than that in the case where the core portion 3 is not provided, and is adjusted so that the entire weight falls within the specified range.

図２は、この発明の第２の実施形態の球技用ボール１を示し、この実施形態では、球体２の中心を通るｘ軸に垂直な面に、球体２の素材よりも高密度な素材からなる錘部４を、ｘ軸を中心に環状に配置することにより、球体２の中心を通るｘ軸、ｙ軸とｚ軸のうち、ｙ軸とｚ軸の慣性モーメントが等しく、ｘ軸の慣性モーメントが、ｙ軸とｚ軸の慣性モーメントよりも大きくなるように設定している。   FIG. 2 shows a ball game ball 1 according to a second embodiment of the present invention. In this embodiment, a material having a higher density than the material of the sphere 2 is formed on a plane perpendicular to the x-axis passing through the center of the sphere 2. By arranging the weight portion 4 in an annular shape around the x-axis, the y-axis and z-axis moments of inertia of the x-axis, y-axis and z-axis passing through the center of the sphere 2 are equal, and the x-axis inertia The moment is set to be larger than the inertia moment of the y-axis and the z-axis.

図３に示す球技用ボール１は、この発明の第３の実施形態であり、球体２の中心に、ｘ軸に長軸、ｙ軸とｚ軸に同一長さの短軸を有する中空あるいは低密度素材からなるカプセル型のコア部３を球体２の中心に設け、さらに、球体２の中心を通るｘ軸に垂直な面に、球体２の素材よりも高密度な素材からなる錘部４を、ｘ軸を中心に環状に配置している。   A ball game ball 1 shown in FIG. 3 is a third embodiment of the present invention, and a hollow or low ball having a long axis at the x-axis and a short axis of the same length as the y-axis and z-axis at the center of the sphere 2. A capsule-shaped core portion 3 made of a density material is provided at the center of the sphere 2, and a weight portion 4 made of a material higher in density than the material of the sphere 2 is provided on a surface perpendicular to the x-axis passing through the center of the sphere 2. , Arranged in an annular shape around the x axis.

図４に示す球技用ボール１は、この発明の第４の実施形態であり、球体２の中心に、中空あるいは低密度素材からなる球形のコア部３を設け、さらに、球体２の中心を通るｘ軸に垂直な面に、球体２の素材よりも高密度な素材からなる錘部４を、ｘ軸を中心に環状に配置している。   A ball game ball 1 shown in FIG. 4 is a fourth embodiment of the present invention. A spherical core portion 3 made of a hollow or low-density material is provided at the center of the sphere 2, and further passes through the center of the sphere 2. A weight portion 4 made of a material having a higher density than the material of the sphere 2 is arranged in a ring shape around the x axis on a surface perpendicular to the x axis.

図５に示す球技用ボール１は、この発明の第５の実施形態であり、球体２の中心を通る前記X軸に、球体２の中心を挟んで等距離の位置に中空あるいは低密度素材からなる回転促進部３３を設けている。   A ball game ball 1 shown in FIG. 5 is a fifth embodiment of the present invention, and is made of a hollow or low-density material at an equidistant position across the center of the sphere 2 with the X axis passing through the center of the sphere 2. The rotation promotion part 33 which becomes is provided.

図６に示す球技用ボール１は、この発明の第６の実施形態であり、球体２の中心に、ｘ軸に長軸、ｙ軸とｚ軸に同一長さの短軸を有する中空あるいは低密度素材からなるカプセル型のコア部３を球体２の中心に設け、さらに、球体２の中心を通るX軸に、球体２の中心を挟んで等距離の位置に中空あるいは低密度素材からなる回転促進部３３を設けている。   A ball game ball 1 shown in FIG. 6 is a sixth embodiment of the present invention, and is a hollow or low ball having a long axis in the x-axis and a short axis of the same length in the y-axis and z-axis at the center of the sphere 2. A capsule-shaped core portion 3 made of a density material is provided at the center of the sphere 2, and further, a rotation made of a hollow or low-density material at an equal distance across the center of the sphere 2 with the X axis passing through the center of the sphere 2. The promotion part 33 is provided.

図７に示す球技用ボール１は、この発明の第７の実施形態であり、球体２の中心に、中空あるいは低密度素材からなる球形のコア部３を設け、さらに、球体２の中心を通るX軸に、球体２の中心を挟んで等距離の位置に中空あるいは低密度素材からなる回転促進部３３を設けている。   A ball game ball 1 shown in FIG. 7 is a seventh embodiment of the present invention, and a spherical core portion 3 made of a hollow or low-density material is provided at the center of the sphere 2, and further passes through the center of the sphere 2. On the X axis, a rotation promoting part 33 made of a hollow or low density material is provided at an equidistant position across the center of the sphere 2.

図８に示す球技用ボール１は、この発明の第８の実施形態であり、球体２の中心に、中空あるいは低密度素材からなる球形のコア部３を設け、球体２の中心を通るX軸に、球体２の中心を挟んで等距離の位置に中空あるいは低密度素材からなる回転促進部３３を設け、さらに、球体２の中心を通るｘ軸に垂直な面に、球体２の素材よりも高密度な素材からなる錘部４を、ｘ軸を中心に環状に配置している。なお、コア部３の素材が球体２の素材と同じ場合でも、この発明に含まれる。   A ball for ball game 1 shown in FIG. 8 is an eighth embodiment of the present invention. A spherical core portion 3 made of a hollow or low-density material is provided at the center of the sphere 2, and the X axis passes through the center of the sphere 2. In addition, a rotation accelerating portion 33 made of a hollow or low-density material is provided at an equidistant position across the center of the sphere 2, and further, on a plane perpendicular to the x-axis passing through the center of the sphere 2 than the material of the sphere 2. A weight portion 4 made of a high-density material is annularly arranged around the x axis. In addition, even when the raw material of the core part 3 is the same as the raw material of the spherical body 2, it is included in this invention.

図９に示す球技用ボール１は、この発明の第９の実施形態であり、球体２の中心に、ｘ軸に長軸、ｙ軸とｚ軸に同一長さの短軸を有する中空あるいは低密度素材からなるカプセル型のコア部３を球体２の中心に設け、球体２の中心を通るｘ軸に、球体２の中心を挟んで等距離の位置に中空あるいは低密度素材からなる回転促進部３３を設け、さらに、球体２の中心を通るｘ軸に垂直な面に、球体２の素材よりも高密度な素材からなる錘部４を配置している。   A ball for ball game 1 shown in FIG. 9 is a ninth embodiment of the present invention, and is a hollow or low ball having a long axis in the x-axis and a short axis of the same length in the y-axis and z-axis at the center of the sphere 2. A capsule-shaped core portion 3 made of a density material is provided at the center of the sphere 2, and a rotation promoting portion made of a hollow or low-density material at an equidistant position across the center of the sphere 2 with the x axis passing through the center of the sphere 2. 33, and a weight portion 4 made of a material having a higher density than the material of the sphere 2 is disposed on a plane perpendicular to the x-axis passing through the center of the sphere 2.

この発明における球技用ボールの製造方法としては、例えば、ｘ軸上に中空を配置するには、ボールを半分に割った状態で中空を配置し、その後にそれぞれを接合させる等、適宜設計することができる。   As a method for manufacturing a ball for ball game in the present invention, for example, in order to place a hollow on the x-axis, the hollow should be placed in a state where the ball is divided in half, and then each is joined appropriately. Can do.

１ 球技用ボール
２ 球体
３ コア部
３３ 回転促進部
４ 錘部 1 Ball for ball game 2 Sphere 3 Core part 33 Rotation promoting part 4 Weight part

Claims (5)

球体の中心を通る互いに直交する３本のｘ軸、ｙ軸とｚ軸のうち、ｙ軸とｚ軸の慣性モーメントが等しく、ｘ軸の慣性モーメントが、ｙ軸とｚ軸の慣性モーメントよりも大きく設定され、球体の中心を通る前記ｘ軸に長軸、ｙ軸とｚ軸に同一長さの短軸を有する中空のコア部を前記球体の中心に設けたことを特徴とする、グランドゴルフまたはパークゴルフ用ボール。 Of the three orthogonal x-axes passing through the center of the sphere, y-axis and z-axis, the y-axis and z-axis moments of inertia are equal, and the x-axis moment of inertia is greater than the y-axis and z-axis moments of inertia. is set large, wherein the long axis in the x-axis passing through the center of the sphere, a hollow core portion having a minor axis of the same length in the y-axis and z-axis is provided at the center of the sphere, ground Golf Or park golf balls. 球体の中心を通る前記X軸に垂直な任意の軸周りの慣性モーメントが全て一定である請求項１記載のグランドゴルフまたはパークゴルフ用ボール。   The ball for ground golf or park golf according to claim 1, wherein moments of inertia around any axis perpendicular to the X axis passing through the center of the sphere are all constant. 前記球体の中心を通る前記ｘ軸に長軸、ｙ軸とｚ軸に同一長さの短軸を有する中空のコア部を前記球体の中心に設け、前記球体の中心を通る前記ｘ軸に垂直な面に、球体の素材よりも高密度な素材からなる錘部を、ｘ軸を中心に環状に配置したことを特徴とする請求項１又は２記載のグランドゴルフまたはパークゴルフ用ボール。 Provided long axis in the x-axis passing through the center of the sphere, a hollow core portion having a minor axis of the same length in the y-axis and z-axis in the center of the sphere, perpendicular to the x axis passing through the center of the sphere 3. A golf ball for a grand golf or a park golf according to claim 1, wherein a weight portion made of a material having a density higher than that of a spherical material is arranged in an annular shape centering on the x-axis. 前記球体の中心を通る前記ｘ軸に長軸、ｙ軸とｚ軸に同一長さの短軸を有する中空のコア部を前記球体の中心に設け、かつ、球体の中心を通る前記X軸に球体の中心を挟んで等距離の位置に中空あるいは低密度素材からなる回転促進部を設けており、前記回転促進部のX軸に垂直な任意の断面形状が円形であることを特徴とする請求項１又は２記載のグランドゴルフまたはパークゴルフ用ボール。 Provided long axis in the x-axis passing through the center of the sphere, a hollow core portion having a minor axis of the same length in the y-axis and z-axis in the center of the sphere, and, in the X-axis passing through the center of the sphere A rotation promoting portion made of a hollow or low-density material is provided at equidistant positions across the center of the sphere, and any cross-sectional shape perpendicular to the X axis of the rotation promoting portion is circular. Item 3. A golf ball for grand golf or park golf according to item 1 or 2. 前記球体の中心を通る前記ｘ軸に長軸、ｙ軸とｚ軸に同一長さの短軸を有する中空のコア部を前記球体の中心に設け、球体の中心を通る前記X軸上に、球体の中心を挟んで等距離の位置に中空あるいは低密度素材からなる回転促進部を設け、前記球体の中心を通る前記ｘ軸に垂直な面に、球体の素材よりも高密度な素材からなる錘部を、ｘ軸を中心に環状に配置しており、前記回転促進部のX軸に垂直な任意の断面形状が円形であることを特徴とする請求項１又は２記載のグランドゴルフまたはパークゴルフ用ボール。 Long axis in the x-axis passing through the center of the sphere, provided the hollow core portion having a minor axis of the same length in the y-axis and z-axis in the center of the sphere, on the X-axis passing through the center of the sphere, A rotation promoting portion made of a hollow or low-density material is provided at an equidistant position across the center of the sphere, and the surface perpendicular to the x-axis passing through the center of the sphere is made of a material higher in density than the sphere material. The golf course or park according to claim 1 or 2, wherein the weight portion is annularly arranged around the x-axis, and an arbitrary cross-sectional shape perpendicular to the X-axis of the rotation promoting portion is circular. Golf ball.
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