JP2024173724A

JP2024173724A - Constant blade length golf club head

Info

Publication number: JP2024173724A
Application number: JP2024081641A
Authority: JP
Inventors: ケイ．ヘッティンガロナルド; K Hettinger Ronald; タシストロケビン; Tassistro Kevin
Original assignee: Acushnet Co
Current assignee: Acushnet Co
Priority date: 2023-06-02
Filing date: 2024-05-20
Publication date: 2024-12-12
Also published as: EP4470638A1; US20240399217A1; KR20240173179A

Abstract

To provide golf club heads having the same striking face length regardless of sole configuration.SOLUTION: A golf club head 100 utilizes the same leading edge blade length for same-lofted golf club heads to achieve consistent striking face length 150 for different bounce angles and/or grind types on soles.SELECTED DRAWING: Figure 3

Description

この発明は、全般的には、ソール構成に関係なく、同じロフトで同じブレード長さ寸法を具備する複数のゴルフクラブヘッドに関する。より具体的には、この発明による同じロフトのゴルフクラブヘッドは、バウンス角および／またはグラインドタイプに関係なく、アドレス位置で同じ打撃フェース寸法および視覚的外観を具備する。 The present invention generally relates to golf club heads having the same loft and blade length dimensions, regardless of sole configuration. More specifically, golf club heads of the same loft according to the present invention have the same striking face dimensions and visual appearance at address, regardless of bounce angle and/or grind type.

現代のゴルフクラブの設計は、ゴルフの初期の頃から進化してきた。ゴルフクラブ技術のあらゆる技術的進歩の良い点は、あらゆるレベルのゴルファーにとってゴルフがより簡単にプレイできるようになったことである。しかし、こうした進歩は、ゴルフクラブのエンジニアにとって大きな課題を伴う。 Modern golf club design has evolved since the early days of golf. The good thing about every technological advancement in golf club technology is that it makes the game easier to play for golfers of all levels. However, these advancements come with great challenges for golf club engineers.

ショットの自信を高めるためには、アドレス位置に立ったときにゴルファーに一貫したクラブヘッドプロファイルを提供することが重要である。現在のアイアン型ゴルフクラブヘッドの設計では、クラブを設計されたロフト角とライ角で保持し、ソールを地面平面に接触させ、シャフト軸が地面平面と交差するシャフト軸交点を確立し、地面平面に垂直でゴルフクラブヘッドの最もトウ側の点と接触する垂直面を確立し、シャフト軸交点から垂直面までの距離を測定することによってブレードの長さを測定している。ゴルフクラブヘッドのソールが変わると、従来の設計方法を使用する際に問題が生じる。ロフトが同じでも、バウンス角やグラインドの違いによりソールの高さが異なるゴルフクラブヘッドは、地面平面上のシャフト軸の交点が変化する。従来の測定に基づいて同じブレード長寸法を具備ゴルフクラブヘッドを設計するには、垂直面の位置を調整する必要があり、アドレス位置から観察される打撃フェースの長さが変化する。 To improve shot confidence, it is important to provide a golfer with a consistent club head profile when standing at the address position. In the current design of iron-type golf club heads, the club is held at the designed loft and lie angles, the sole is placed in contact with the ground plane, a shaft axis intersection point where the shaft axis intersects the ground plane is established, a vertical plane is established that is perpendicular to the ground plane and in contact with the toe-most point of the golf club head, and the blade length is measured by measuring the distance from the shaft axis intersection point to the vertical plane. When the sole of a golf club head changes, problems arise when using the conventional design method. Golf club heads with the same loft but different sole heights due to different bounce angles and grinds will have different intersection points of the shaft axis on the ground plane. To design golf club heads with the same blade length dimensions based on the conventional measurements, the position of the vertical plane must be adjusted, and the length of the striking face observed from the address position will change.

この発明は、ソール構成に関係なく、アドレス位置での外観が一貫している、所定のロフト内の同じ打撃フェース長さを具備するゴルフクラブヘッドに関する。この発明は、ヒールからトゥ方向の打撃フェースの長さが、ソールの異なるバウンス角および／またはグラインドタイプによって影響を受けないことを保証する独自の設計側面を利用する。 This invention relates to golf club heads that have the same striking face length in a given loft with a consistent appearance at address regardless of sole configuration. This invention utilizes unique design aspects that ensure that the heel-toe striking face length is not affected by different bounce angles and/or grind types of the sole.

この発明の１つの側面は、複数のゴルフクラブヘッドであり、当該複数のゴルフクラブヘッドは、第１ゴルフクラブヘッドと；第２ゴルフクラブヘッドとを有し；上記第１ゴルフクラブヘッドは：第１打撃フェースと；上記第１打撃フェースの後ろの第１トップラインから第１ソールまで延びる第１バック部分と；上記第１打撃フェースと上記第１ソールとの間の遷移部の第１リーディングエッジと；第１シャフト軸を有する第１シャフトを受け入れるように構成された第１ホーゼルであって、上記第１ホーゼルは第１ヒール部分の上に配置され、上記第１ヒール部分は第１トウ部分の反対側に配置される上記第１ホーゼルと；上記第１打撃フェースの第１フェース中心を中心とする第１座標系であって、上記第１ゴルフクラブヘッドが第１規定ロフト角および第１規定ライ角で第１アドレス位置にあるときに第１地面平面に垂直に延びる第１ｙ軸と、上記第１ゴルフクラブヘッドの第１ヒール部分に向かって延びる上記第１ｙ軸に垂直で上記第１打撃フェースと平行な第１ｘ軸と、上記第１ｙ軸および上記第１ｘ軸に垂直で上記第１打撃フェースを通って延びる第１ｚ軸とを有する上記第１座標系と；上記第１地面平面に平行で上記第１リーディングエッジの最前方点を通る第１リーディングエッジ平面と；上記第１シャフト軸が上記第１リーディングエッジ平面と交差する場所に位置する第１シャフト軸／リーディングエッジ平面交点と；上記第１地面平面に垂直で上記第１シャフト軸／リーディングエッジ平面交点を通る第１垂直ヒール平面と；上記第１地面平面に垂直で上記第１ゴルフクラブヘッドのトウ側の最前方点を通る第１垂直トウ平面と；上記第１垂直トウ平面と、上記第１シャフト軸／リーディングエッジ平面交点との間の、上記第のｘ軸に沿った距離として定義される第１リーディングエッジブレード長さと；上記第１垂直トウ平面と、上記第１垂直ヒール平面との間の、上記第１ｘ軸に沿った距離として定義される第１打撃フェース長さとを有し；上記第２ゴルフクラブヘッドは：第２打撃フェースと；上記第２打撃フェースの後ろの第２トップラインから第２ソールまで延びる第２バック部分と；上記第２打撃フェースと上記第２ソールとの間の遷移部の第２リーディングエッジと；第２シャフト軸を有する第２シャフトを受け入れるように構成された第２ホーゼルであって、上記第２ホーゼルは第２ヒール部分上に配置され、上記第２ヒール部分は第２トウ部分の反対側に配置される上記第２ホーゼルと；上記第２打撃フェースの第２フェース中心を中心とする第２座標系であって、上記第２ゴルフクラブヘッドが第２規定ロフト角および第２規定ライ角で第２アドレス位置にあるときに第２地面平面に垂直に延びる第２ｙ軸と、上記第２ゴルフクラブヘッドの第２ヒール部分に向かって延びる上記第２ｙ軸に垂直で上記第２打撃フェースと平行な第２ｘ軸と、上記第２ｙ軸および上記第２ｘ軸に垂直で上記第２打撃フェースを通って延びる第２ｚ軸とを有する上記第２座標系と；上記第２地面平面に平行で上記第２リーディングエッジの最前方点を通る第２リーディングエッジ平面と；上記第２シャフト軸が上記第２リーディングエッジ平面と交差する場所に位置する第２シャフト軸／リーディングエッジ平面交点と；上記第２地面平面に垂直で上記第２シャフト軸／リーディングエッジ平面交点を通る第２垂直ヒール平面と；上記第２地面平面に垂直で上記第２ゴルフクラブヘッドのトウ側の最前方点を通る第２垂直トウ平面と；上記第２垂直トウ平面と、上記第２シャフト軸／リーディングエッジ平面交点との間の、上記第のｘ軸に沿った距離として定義される第２リーディングエッジブレード長さと；上記第２垂直トウ平面と、上記第２垂直ヒール平面との間の、上記第２ｘ軸に沿った距離として定義される第２打撃フェース長さとを有し；上記第１ソールの形状は上記第２ソールの形状とは異なり、上記第１リーディングエッジブレード長さは上記第２リーディングエッジブレード長さに等しい。 One aspect of the present invention is a plurality of golf club heads, the plurality of golf club heads having a first golf club head; and a second golf club head, the first golf club head having: a first striking face; a first back portion extending from a first top line behind the first striking face to a first sole; a first leading edge at a transition between the first striking face and the first sole; a first hosel configured to receive a first shaft having a first shaft axis, the first hosel being disposed above a first heel portion, the first heel portion being disposed opposite a first toe portion; and a first coordinate system centered on a first face center of the first striking face, the first y-axis extending perpendicular to a first ground plane when the first golf club head is in a first address position with a first prescribed loft angle and a first prescribed lie angle, and a first coordinate system perpendicular to the first y-axis extending toward the first heel portion of the first golf club head. a first coordinate system having a first x-axis perpendicular to and parallel to the first striking face, and a first z-axis perpendicular to the first y-axis and the first x-axis and extending through the first striking face; a first leading edge plane parallel to the first ground plane and passing through a forward-most point of the first leading edge; a first shaft axis/leading edge plane intersection point located where the first shaft axis intersects the first leading edge plane; a first vertical heel plane perpendicular to the first ground plane and passing through the first shaft axis/leading edge plane intersection point; a first vertical toe plane perpendicular to the first ground plane and passing through a forward-most point on a toe side of the first golf club head; a first leading edge blade length defined as the distance along the first x-axis between the first vertical toe plane and the first shaft axis/leading edge plane intersection point; and a first striking face length defined as the distance along the first x-axis between the first vertical toe plane and the first vertical heel plane. the second golf club head includes: a second striking face; a second back portion extending from a second topline behind the second striking face to a second sole; a second leading edge at a transition between the second striking face and the second sole; a second hosel configured to receive a second shaft having a second shaft axis, the second hosel being disposed on a second heel portion, the second heel portion being disposed opposite a second toe portion; a second coordinate system centered on a second face center of the second striking face, the second coordinate system having a second y-axis extending perpendicular to a second ground plane when the second golf club head is in a second address position with a second prescribed loft angle and a second prescribed lie angle, a second x-axis perpendicular to the second y-axis and parallel to the second striking face extending toward a second heel portion of the second golf club head, and a second z-axis perpendicular to the second y-axis and the second x-axis extending through the second striking face. a second leading edge plane parallel to the second ground plane and passing through a forward-most point of the second leading edge; a second shaft axis/leading edge plane intersection point located where the second shaft axis intersects the second leading edge plane; a second vertical heel plane perpendicular to the second ground plane and passing through the second shaft axis/leading edge plane intersection point; a second vertical toe plane perpendicular to the second ground plane and passing through a forward-most point on the toe side of the second golf club head; a second leading edge blade length defined as the distance along the second x-axis between the second vertical toe plane and the second shaft axis/leading edge plane intersection point; and a second striking face length defined as the distance along the second x-axis between the second vertical toe plane and the second vertical heel plane; the shape of the first sole is different from the shape of the second sole, and the first leading edge blade length is equal to the second leading edge blade length.

この発明の他の側面は、複数のゴルフクラブヘッドであり、当該複数のゴルフクラブヘッドは：第１ゴルフクラブヘッドと；第２ゴルフクラブヘッドとを有し；上記第１ゴルフクラブヘッドは；ヒール側最大限度およびトウ側最大限度を具備する第１の複数のスコアラインを有する第１打撃フェースと；上記第１打撃フェースの後ろの第１トップラインから第１ソールまで延びる第１バック部分と；上記第１打撃フェースと上記第１ソールとの間の遷移部の第１リーディングエッジと；第１シャフト軸を有する第１シャフトを受け入れるように構成された第１ホーゼルであって、上記第１ホーゼルは第１ヒール部分上に配置され、上記第１ヒール部分は第１トウ部分の反対側に配置される上記第１ホーゼルと；上記第１打撃フェースの第１フェース中心を中心とする第１座標系であって、上記第１ゴルフクラブヘッドが第１規定ロフト角および第１規定ライ角で第１アドレス位置にあるときに第１地面平面に垂直に延びる第１ｙ軸と、上記第１ゴルフクラブヘッドの第１ヒール部分に向かって延びる上記第１ｙ軸に垂直で上記第１打撃フェースと平行な第１ｘ軸と、上記第１ｙ軸および上記第１ｘ軸に垂直で上記第１打撃フェースを通って延びる第１ｚ軸とを有する上記第１座標系と；上記第１地面平面に平行で上記第１リーディングエッジの最前方点を通る第１リーディングエッジ平面と；上記第１シャフト軸が上記第１リーディングエッジ平面と交差する場所に位置する第１シャフト軸／リーディングエッジ平面交点と；上記第１地面平面に垂直で上記第１シャフト軸／リーディングエッジ平面交点を通る第１垂直ヒール平面と；上記第１地面平面に垂直で上記第１ゴルフクラブヘッドのトウ側の最前方点を通る第１垂直トウ平面と；上記第１垂直トウ平面と、上記第１シャフト軸／リーディングエッジ平面交点との間の、上記第のｘ軸に沿った距離として定義される第１リーディングエッジブレード長さと；上記第１垂直トウ平面と、上記第１垂直ヒール平面との間の、上記第１ｘ軸に沿った距離として定義される第１打撃フェース長さと；上記第１の複数のスコアラインの上記ヒール側最大限度と上記第１の複数のスコアラインの上記トウ側最大限度との間の上記第１打撃フェースの領域として定義される第１スコアライン領域と；上記第１の複数スコアラインの上記トウ側最大限度と上記第１垂直トウ平面との間の上記第１打撃フェースの領域として定義される第１トウ領域と；上記第１の複数のスコアラインの上記ヒール側最大限度と上記第１垂直ヒール平面との間の上記第１打撃フェースの領域として定義される第１ヒール領域とを有し；上記第２ゴルフクラブヘッドは：ヒール側最大限度およびトウ側最大限度を具備する第２の複数のスコアラインを有する第２打撃フェースと；上記第２打撃フェースの後ろの第２トップラインから第２ソールまで延びる第２バック部分と；上記第２打撃フェースと上記第２ソールとの間の遷移部の第２リーディングエッジと；第２シャフト軸を有する第２シャフトを受け入れるように構成された第２ホーゼルであって、上記第２ホーゼルは第２ヒール部分上に配置され、上記第２ヒール部分は第２トウ部分の反対側に配置される上記第２ホーゼルと；上記第２打撃フェースの第２フェース中心を中心とする第２座標系であって、上記第２ゴルフクラブヘッドが第２規定ロフト角および第２規定ライ角で第２アドレス位置にあるときに第２地面平面に垂直に延びる第２ｙ軸と、上記第２ゴルフクラブヘッドの第２ヒール部分に向かって延びる上記第２ｙ軸に垂直で上記第２打撃フェースと平行な第２ｘ軸と、上記第２ｙ軸および上記第２ｘ軸に垂直で上記第２打撃フェースを通って延びる第２ｚ軸とを有する上記第２座標系と；上記第２地面平面に平行で上記第２リーディングエッジの最前方点を通る第２リーディングエッジ平面と；上記第２シャフト軸が上記第２リーディングエッジ平面と交差する場所に位置する第２シャフト軸／リーディングエッジ平面交点と；上記第２地面平面に垂直で上記第２シャフト軸／リーディングエッジ平面交点を通る第２垂直ヒール平面と；上記第２地面平面に垂直で上記第２ゴルフクラブヘッドのトウ側の最前方点を通る第２垂直トウ平面と；上記第２垂直トウ平面と、上記第２シャフト軸／リーディングエッジ平面交点との間の、上記第のｘ軸に沿った距離として定義される第２リーディングエッジブレード長さと；上記第２垂直トウ平面と、上記第２垂直ヒール平面との間の、上記第２ｘ軸に沿った距離として定義される第２打撃フェース長さと；上記第２の複数のスコアラインの上記ヒール側最大限度と上記第２の複数のスコアラインの上記トウ側最大限度との間の上記第２打撃フェースの領域として定義される第２スコアライン領域と；上記第２の複数スコアラインの上記トウ側最大限度と上記第２垂直トウ平面との間の上記第２打撃フェースの領域として定義される第２トウ領域と；上記第２の複数のスコアラインの上記ヒール側最大限度と上記第２垂直ヒール平面との間の上記第２打撃フェースの領域として定義される第２ヒール領域を有し；上記第１Ｙ軸に沿った上記第１ソールの最大高さは、上記第２Ｙ軸に沿った上記第２ソールの最大高さとは異なり；上記第１Ｘ軸に沿った上記第１スコアライン領域の長さは、上記第２Ｘ軸に沿った上記第２スコアライン領域の長さに等しいことを特徴とする複数のゴルフクラブヘッド。 Another aspect of the invention is a plurality of golf club heads, the plurality of golf club heads having: a first golf club head; and a second golf club head, the first golf club head having: a first striking face having a first plurality of scorelines with a heel side maximum limit and a toe side maximum limit; a first back portion extending from a first topline behind the first striking face to a first sole; a first leading edge at a transition between the first striking face and the first sole; and a first hosel configured to receive a first shaft having a first shaft axis, the first hosel being positioned on the first heel portion, the first hosel, the first heel portion being located opposite the first toe portion; a first coordinate system centered on a first face center of the first striking face, the first coordinate system having a first y-axis extending perpendicular to a first ground plane when the first golf club head is in a first address position with a first prescribed loft angle and a first prescribed lie angle, a first x-axis perpendicular to the first y-axis and parallel to the first striking face extending toward a first heel portion of the first golf club head, and a first z-axis perpendicular to the first y-axis and the first x-axis extending through the first striking face; and a first leading edge plane; a first shaft axis/leading edge plane intersection point located where the first shaft axis intersects the first leading edge plane; a first vertical heel plane perpendicular to the first ground plane and passing through the first shaft axis/leading edge plane intersection point; a first vertical toe plane perpendicular to the first ground plane and passing through a forward-most point on a toe side of the first golf club head; a first leading edge blade length defined as the distance along the x-axis between the first vertical toe plane and the first shaft axis/leading edge plane intersection point; and a first vertical heel plane between the first vertical toe plane and the first vertical heel plane. a first striking face length defined as the distance along an axis; a first scoreline area defined as the area of the first striking face between the heel maximum extent of the first plurality of scorelines and the toe maximum extent of the first plurality of scorelines; a first toe area defined as the area of the first striking face between the toe maximum extent of the first plurality of scorelines and the first vertical toe plane; and a first heel area defined as the area of the first striking face between the heel maximum extent of the first plurality of scorelines and the first vertical heel plane; a second striking face having a second plurality of scorelines with a side maximum extent; a second back portion extending from a second topline behind the second striking face to a second sole; a second leading edge at a transition between the second striking face and the second sole; a second hosel configured to receive a second shaft having a second shaft axis, the second hosel being disposed on a second heel portion, the second heel portion being disposed opposite a second toe portion; and a second coordinate system centered on a second face center of the second striking face, the second golf club head being configured to rotate at a second prescribed loft angle and a second prescribed a second coordinate system having a second y-axis extending perpendicular to the second ground plane when the golf club is in a second address position at a lie angle; a second x-axis perpendicular to the second y-axis and parallel to the second striking face extending toward a second heel portion of the second golf club head; a second z-axis perpendicular to the second y-axis and parallel to the second striking face; a second leading edge plane parallel to the second ground plane and passing through a forward-most point of the second leading edge; a second shaft axis/leading edge plane intersection point located where the second shaft axis intersects the second leading edge plane; and a second shaft axis/leading edge plane intersection point perpendicular to the second ground plane. a second vertical heel plane passing through a leading edge plane intersection point of the second golf club head; a second vertical toe plane perpendicular to the second ground plane and passing through a forward-most point on a toe side of the second golf club head; a second leading edge blade length defined as the distance along the second x-axis between the second vertical toe plane and the second shaft axis/leading edge plane intersection point; a second striking face length defined as the distance along the second x-axis between the second vertical toe plane and the second vertical heel plane; and a second striking face area defined as the area of the second striking face between the heel side maximum extent of the second plurality of scorelines and the toe side maximum extent of the second plurality of scorelines. a second scoreline area defined as a region of the second striking face between the toe side maximum extent of the second plurality of scorelines and the second vertical toe plane; a second heel area defined as a region of the second striking face between the heel side maximum extent of the second plurality of scorelines and the second vertical heel plane; a maximum height of the first sole along the first Y-axis is different from a maximum height of the second sole along the second Y-axis; and a length of the first scoreline area along the first X-axis is equal to a length of the second scoreline area along the second X-axis.

この発明の他の側面は、複数のゴルフクラブヘッドであり、当該複数のゴルフクラブヘッドは：第１ゴルフクラブヘッドと；第２ゴルフクラブヘッドとを有し；上記第１ゴルフクラブヘッドは：ヒール側最大限度およびトウ側最大限度を具備する第１の複数のスコアラインを有する第１打撃フェースと；上記第１打撃フェースの後ろの第１トップラインから第１ソールまで延びる第１バック部分と；上記第１打撃フェースと上記第１ソールとの間の遷移部の第１リーディングエッジと；第１シャフト軸を有する第１シャフトを受け入れるように構成された第１ホーゼルであって、上記第１ホーゼルは第１ヒール部分上に配置され、上記第１ヒール部分は第１トウ部分の反対側に配置される上記第１ホーゼルと；上記第１打撃フェースの第１フェース中心を中心とする第１座標系であって、上記第１ゴルフクラブヘッドが第１規定ロフト角および第１規定ライ角で第１アドレス位置にあるときに第１地面平面に垂直に延びる第１ｙ軸と、上記第１ゴルフクラブヘッドの第１ヒール部分に向かって延びる上記第１ｙ軸に垂直で上記第１打撃フェースと平行な第１ｘ軸と、上記第１ｙ軸および上記第１ｘ軸に垂直で上記第１打撃フェースを通って延びる第１ｚ軸とを有する上記第１座標系と；上記第１地面平面に平行で上記第１リーディングエッジの最前方点を通る第１リーディングエッジ平面と；上記第１シャフト軸が上記第１リーディングエッジ平面と交差する場所に位置する第１シャフト軸／リーディングエッジ平面交点と；上記第１シャフト軸が上記第１地面平面と交差する場所に位置する第１シャフト軸／地面平面交点と；上記第１地面平面に垂直で上記第１シャフト軸／リーディングエッジ平面交点を通る第１垂直ヒール平面と；上記第１地面平面に垂直で上記第１ゴルフクラブヘッドのトウ側の最前方点を通る第１垂直トウ平面と；上記第１垂直トウ平面と、上記第１シャフト軸／リーディングエッジ平面交点との間の、上記第のｘ軸に沿った距離として定義される第１リーディングエッジブレード長さと；上記第１垂直トウ平面と、上記第１垂直ヒール平面との間の、上記第１ｘ軸に沿った距離として定義される第１打撃フェース長さと；上記第１の複数のスコアラインの上記ヒール側最大限度と上記第１の複数のスコアラインの上記トウ側最大限度との間の上記第１打撃フェースの領域として定義される第１スコアライン領域と；上記第１の複数スコアラインの上記トウ側最大限度と上記第１垂直トウ平面との間の上記第１打撃フェースの領域として定義される第１トウ領域と；上記第１の複数のスコアラインの上記ヒール側最大限度と上記第１垂直ヒール平面との間の上記第１打撃フェースの領域として定義される第１ヒール領域とを有し；上記第２ゴルフクラブヘッドは：ヒール側最大限度およびトウ側最大限度を具備する第２の複数のスコアラインを有する第２打撃フェースと；上記第２打撃フェースの後ろの第２トップラインから第２ソールまで延びる第２バック部分と；上記第２打撃フェースと上記第２ソールとの間の遷移部の第２リーディングエッジと；第２シャフト軸を有する第２シャフトを受け入れるように構成された第２ホーゼルであって、上記第２ホーゼルは第２ヒール部分上に配置され、上記第２ヒール部分は第２トウ部分の反対側に配置される上記第２ホーゼルと；上記第２打撃フェースの第２フェース中心を中心とする第２座標系であって、上記第２ゴルフクラブヘッドが第２規定ロフト角および第２規定ライ角で第２アドレス位置にあるときに第２地面平面に垂直に延びる第２ｙ軸と、上記第２ゴルフクラブヘッドの第２ヒール部分に向かって延びる上記第２ｙ軸に垂直で上記第２打撃フェースと平行な第２ｘ軸と、上記第２ｙ軸および上記第２ｘ軸に垂直で上記第２打撃フェースを通って延びる第２ｚ軸とを有する上記第２座標系と；上記第２地面平面に平行で上記第２リーディングエッジの最前方点を通る第２リーディングエッジ平面と；上記第２シャフト軸が上記第２リーディングエッジ平面と交差する場所に位置する第２シャフト軸／リーディングエッジ平面交点と；上記第２シャフト軸が上記第２地面平面と交差する場所に位置する第２シャフト軸／地面平面交点と；上記第２地面平面に垂直で上記第２シャフト軸／リーディングエッジ平面交点を通る第２垂直ヒール平面と；上記第２地面平面に垂直で上記第２ゴルフクラブヘッドのトウ側の最前方点を通る第２垂直トウ平面と；上記第２垂直トウ平面と、上記第２シャフト軸／リーディングエッジ平面交点との間の、上記第２ｘ軸に沿った距離として定義される第２リーディングエッジブレード長さと；上記第２垂直トウ平面と、上記第２垂直ヒール平面との間の、上記第２ｘ軸に沿った距離として定義される第２打撃フェース長さと；上記第２の複数のスコアラインの上記ヒール側最大限度と上記第２の複数のスコアラインの上記トウ側最大限度との間の上記第２打撃フェースの領域として定義される第２スコアライン領域と；上記第２の複数スコアラインの上記トウ側最大限度と上記第２垂直トウ平面との間の上記第２打撃フェースの領域として定義される第２トウ領域と；上記第２の複数のスコアラインの上記ヒール側最大限度と上記第２垂直ヒール平面との間の上記第２打撃フェースの領域として定義される第２ヒール領域を有し；上記第１規定ロフト角は上記第２規定ロフト角に等しく；上記第１ソールの形状は上記第２ソールの形状と異なり；上記第１シャフト軸／地面平面交点と上記第１垂直トウ平面との間の距離は、上記第２シャフト軸／地面平面交点と上記第２垂直トウ平面との間の距離と異なる。 Another aspect of the invention is a plurality of golf club heads, the plurality of golf club heads having: a first golf club head; and a second golf club head, the first golf club head having: a first striking face having a first plurality of scorelines having a heel side maximum limit and a toe side maximum limit; a first back portion extending from a first topline behind the first striking face to a first sole; a first leading edge at a transition between the first striking face and the first sole; and a first hosel configured to receive a first shaft having a first shaft axis, the first hosel being disposed on a first heel portion, the first heel portion being a first the first hosel located opposite the first toe portion; a first coordinate system centered on a first face center of the first striking face, the first coordinate system having a first y-axis extending perpendicular to a first ground plane when the first golf club head is in a first address position with a first prescribed loft angle and a first prescribed lie angle, a first x-axis perpendicular to the first y-axis and parallel to the first striking face extending toward a first heel portion of the first golf club head, and a first z-axis perpendicular to the first y-axis and the first x-axis extending through the first striking face; a first leading edge plane parallel to the first ground plane and passing through a forward-most point of the first leading edge; and a first shaft axis/leading edge plane intersection located where the first shaft axis intersects the first ground plane; a first vertical heel plane perpendicular to the first ground plane and passing through the first shaft axis/leading edge plane intersection; a first vertical toe plane perpendicular to the first ground plane and passing through a forward-most point on a toe side of the first golf club head; a first leading edge blade length defined as the distance along the x-axis between the first vertical toe plane and the first shaft axis/leading edge plane intersection; a first striking face length defined as the distance along the first x-axis between the heel side maximum extent of the first plurality of scorelines and the toe side maximum extent of the first plurality of scorelines; a first scoreline area defined as the area of the first striking face between the toe side maximum extent of the first plurality of scorelines and the first vertical toe plane; and a first heel area defined as the area of the first striking face between the heel side maximum extent of the first plurality of scorelines and the first vertical heel plane; a second striking face having a second plurality of scorelines with a toe maximum; a second back portion extending from a second topline behind the second striking face to a second sole; a second leading edge at a transition between the second striking face and the second sole; a second hosel configured to receive a second shaft having a second shaft axis, the second hosel being disposed on a second heel portion, the second heel portion being disposed opposite a second toe portion; and a second coordinate system centered on a second face center of the second striking face, the second golf club head being adapted to engage a second address at a second prescribed loft angle and a second prescribed lie angle. a second coordinate system having a second y-axis extending perpendicular to a second ground plane when the second golf club head is in a seated position, a second x-axis perpendicular to the second y-axis extending toward a second heel portion of the second golf club head and parallel to the second striking face, and a second z-axis perpendicular to the second y-axis and the second x-axis extending through the second striking face; a second leading edge plane parallel to the second ground plane and passing through a forward-most point of the second leading edge; a second shaft axis/leading edge plane intersection located where the second shaft axis intersects with the second leading edge plane; and a second shaft axis/ground plane intersection located where the second shaft axis intersects with the second ground plane. a second vertical heel plane perpendicular to the second ground plane and passing through the second shaft axis/leading edge plane intersection; a second vertical toe plane perpendicular to the second ground plane and passing through a forward-most point on a toe side of the second golf club head; a second leading edge blade length defined as the distance along the second x-axis between the second vertical toe plane and the second shaft axis/leading edge plane intersection; a second striking face length defined as the distance along the second x-axis between the second vertical toe plane and the second vertical heel plane; and a second striking face length defined as the distance along the second x-axis between the heel side maximum extent of the second plurality of scorelines and the toe side maximum extent of the second plurality of scorelines. a second scoreline area defined as the area of the hitting face; a second toe area defined as the area of the second hitting face between the toe side maximum extent of the second plurality of scorelines and the second vertical toe plane; a second heel area defined as the area of the second hitting face between the heel side maximum extent of the second plurality of scorelines and the second vertical heel plane; the first prescribed loft angle is equal to the second prescribed loft angle; the shape of the first sole is different from the shape of the second sole; and the distance between the first shaft axis/ground plane intersection and the first vertical toe plane is different from the distance between the second shaft axis/ground plane intersection and the second vertical toe plane.

この発明のこれらおよび他の特徴、態様、および利点は、以下の図面、説明、および特許請求の範囲を参照することにより、よりよく理解されるようになるであろう。 These and other features, aspects, and advantages of the present invention will become better understood with reference to the following drawings, description, and claims.

この発明の先の、または他の特徴および利点は添付図面において説明されるように以下のこの発明の説明から明らかであろう。添付図面は、ここに組み込まれ、明細書の一部を形成し、さらにこの発明の原理を記述し、当業者がこの発明を実施し、または利用できるようになす。 The above and other features and advantages of the present invention will become apparent from the following description of the invention as illustrated in the accompanying drawings, which are incorporated herein and form a part of the specification, and further illustrate the principles of the invention and enable one skilled in the art to make or use the invention.

添付図面の図１は、この発明の実施例に従うゴルフクラブヘッドの側面図を示す。FIG. 1 of the accompanying drawings shows a side view of a golf club head in accordance with an embodiment of the present invention. 添付図面の図２は、この発明の実施例に従うゴルフクラブヘッドの側面図を示す。FIG. 2 of the accompanying drawings shows a side view of a golf club head in accordance with an embodiment of the present invention. 添付図面の図３は、図１のゴルフクラブヘッドの正面図を示す。FIG. 3 of the accompanying drawings shows a front view of the golf club head of FIG. 添付図面の図４は、図２のゴルフクラブヘッドの正面図を示す。FIG. 4 of the accompanying drawings shows a front view of the golf club head of FIG. 添付図面の図５は、図１のゴルフクラブヘッドの正面図を示す。FIG. 5 of the accompanying drawings shows a front view of the golf club head of FIG. 添付図面の図６は、図２のゴルフクラブヘッドの正面図を示す。FIG. 6 of the accompanying drawings shows a front view of the golf club head of FIG.

Detailed Description of the Invention

以下の詳細な説明は、この発明を実施するための現在考えられている最良のモードを説明する。この説明は限定的な意味で解釈されるべきではなく、この発明の範囲は添付の特許請求の範囲によって最もよく定義されるので、単にこの発明の一般原理を説明する目的でなされている。 The following detailed description describes the best mode presently contemplated for carrying out the invention. This description is not to be construed in a limiting sense, but is made merely for the purpose of illustrating the general principles of the invention, the scope of which is best defined by the appended claims.

様々なこの発明の特徴が以下に記載されており、それぞれは、互いに独立して、または他の特徴と組み合わせて使用することができる。 Various inventive features are described below, each of which can be used independently of one another or in combination with other features.

添付図面の図１～図６は、この発明をより良く理解するために、ゴルフクラブヘッド１００および２００を示している。ゴルフクラブヘッド１００は、打撃フェース１１０、バック部分１２２、トップライン１１２、トウ部分１１４、ソール１１６、ヒール部分１１８、およびシャフト軸ＳＡを具備するシャフト（図示せず）を受け入れるように構成されたホーゼル１２０を具備する。打撃フェース１１０は、ヒールからトウ方向に延びる複数のスコアライン１２４と、複数のスコアライン１２４のヒール側最大限度と複数のスコアライン１２４のトウ側最大限度との間の中間に位置するフェースセンターとを含む。ゴルフクラブヘッド１００は、打撃フェース１１０からソール１１６への移行部にリーディングエッジ１３０をさらに有する。 Figures 1-6 of the accompanying drawings show golf club heads 100 and 200 for a better understanding of the present invention. The golf club head 100 includes a striking face 110, a back portion 122, a top line 112, a toe portion 114, a sole 116, a heel portion 118, and a hosel 120 configured to receive a shaft (not shown) having a shaft axis SA. The striking face 110 includes a number of scorelines 124 extending in a heel-to-toe direction and a face center located midway between the heel-side maximum limit of the number of scorelines 124 and the toe-side maximum limit of the number of scorelines 124. The golf club head 100 further includes a leading edge 130 at the transition from the striking face 110 to the sole 116.

ゴルフクラブヘッド２００は、打撃フェース２１０、バック部分２２２、トップライン２１２、トウ部分２１４、ソール２１６、ヒール部分２１８、およびシャフト軸ＳＡを具備するシャフト（図示せず）を受け入れるように構成されたホーゼル２２０を具備する。打撃フェース２１０は、ヒールからトウ方向に延びる複数のスコアライン２２４と、複数のスコアライン２２４のヒール側最大限度と複数のスコアライン２２４のトウ側最大限度との間の中間に位置するフェースセンターとを含む。ゴルフクラブヘッド２００は、さらに、打撃フェース２１０からソール２１６への移行部にリーディングエッジ２３０を有する。 The golf club head 200 includes a striking face 210, a back portion 222, a topline 212, a toe portion 214, a sole 216, a heel portion 218, and a hosel 220 configured to receive a shaft (not shown) having a shaft axis SA. The striking face 210 includes a number of scorelines 224 extending in a heel-to-toe direction and a face center located midway between a heel-side maximum limit of the number of scorelines 224 and a toe-side maximum limit of the number of scorelines 224. The golf club head 200 further includes a leading edge 230 at the transition from the striking face 210 to the sole 216.

ゴルフクラブヘッド１００は、打撃フェース１１０のフェース中心を中心とする座標系を含む。座標系は、ゴルフクラブヘッド１００が所定のロフト角および所定のライ角でアドレス位置にあるときに、地面平面ＧＰに垂直に垂直に延びるｙ軸を含む。座標系は、ｙ軸に垂直で、打撃フェース１１０および地面平面ＧＰに平行で、ゴルフクラブヘッド１００のヒール部分１１８に向かって延びるｘ軸を含む。座標系は、ｙ軸およびｘ軸に垂直で、打撃フェース１１０を通って延びるｚ軸を含む。ゴルフクラブヘッド１００は、さらに、地面平面ＧＰに平行で、リーディングエッジ１３０の最前方点を通るリーディングエッジ平面ＬＥＰを定義する。打撃フェース１１０は、ゴルフクラブヘッド１００が規定のロフト角および規定のライ角でアドレス位置にあるときに、垂直トウ平面ＶＴＰと垂直ヒール平面ＶＨＰとの間のＸ軸に沿った距離として定義される打撃フェース長さ１５０を具備する。ここで、垂直トウ平面ＶＴＰは、ゴルフクラブヘッド１００の最前方点を含む地面平面ＧＰに垂直な平面であり、垂直ヒール平面ＶＨＰは、シャフト軸／リーディングエッジ平面交点１６０を含む地面平面ＧＰに垂直な平面であり、シャフト軸／リーディングエッジ平面交点１６０は、シャフト軸ＳＡがリーディングエッジ平面ＬＥＰと交差する点である。打撃フェース１１０は、スコアライン領域１５１、トウ領域１５３、およびヒール領域１５５を含む。スコアライン領域１５１は、複数のスコアライン１２４のヒール側最大限度と複数のスコアライン１２４のトゥ側最大限度との間の打撃フェース１１０の領域として定義される。トウ領域１５３は、複数のスコアライン１２４のトゥ側最大限度と垂直トゥ平面ＶＴＰとの間の打撃フェース１１０の領域として定義される。ヒール領域１５５は、複数のスコアライン１２４のヒール側最大限度と垂直ヒール平面ＶＨＰとの間の打撃フェース１１０の領域として定義される。 The golf club head 100 includes a coordinate system centered on the face center of the striking face 110. The coordinate system includes a y-axis that extends perpendicular to the ground plane GP when the golf club head 100 is in an address position at a given loft angle and a given lie angle. The coordinate system includes an x-axis that is perpendicular to the y-axis, parallel to the striking face 110 and the ground plane GP, and extends toward the heel portion 118 of the golf club head 100. The coordinate system includes a z-axis that is perpendicular to the y-axis and x-axis and extends through the striking face 110. The golf club head 100 further defines a leading edge plane LEP that is parallel to the ground plane GP and passes through the forward-most point of the leading edge 130. The striking face 110 has a striking face length 150 defined as the distance along the X-axis between a vertical toe plane VTP and a vertical heel plane VHP when the golf club head 100 is in an address position at a prescribed loft angle and a prescribed lie angle, where the vertical toe plane VTP is a plane perpendicular to the ground plane GP that includes the forward-most point of the golf club head 100, and the vertical heel plane VHP is a plane perpendicular to the ground plane GP that includes a shaft axis/leading edge plane intersection 160, where the shaft axis SA intersects with the leading edge plane LEP. The striking face 110 includes a scoreline region 151, a toe region 153, and a heel region 155. The scoreline region 151 is defined as the area of the striking face 110 between the heel-side maximum limit of the plurality of scorelines 124 and the toe-side maximum limit of the plurality of scorelines 124. The toe region 153 is defined as the area of the hitting face 110 between the toe side maximum extent of the scorelines 124 and the vertical toe plane VTP. The heel region 155 is defined as the area of the hitting face 110 between the heel side maximum extent of the scorelines 124 and the vertical heel plane VHP.

ゴルフクラブヘッド２００は、打撃フェース２１０のフェース中心を中心とする座標系を含む。座標系は、ゴルフクラブヘッド２００が所定のロフト角および所定のライ角でアドレス位置にあるときに、地面平面ＧＰに垂直に垂直に延びるｙ軸を含む。座標系は、ｙ軸に垂直で、打撃フェース２１０および地面平面ＧＰに平行で、ゴルフクラブヘッド２００のヒール部分２１８に向かって延びるｘ軸を含む。座標系は、ｙ軸およびｘ軸に垂直で、打撃フェース２１０を通って延びるｚ軸を含む。ゴルフクラブヘッド２００は、さらに、地面平面ＧＰに平行で、リーディングエッジ２３０の最前方点を通るリーディングエッジ平面ＬＥＰを定義する。打撃フェース２１０は、ゴルフクラブヘッド２００が規定のロフト角および規定のライ角でアドレス位置にあるときに、垂直トウ平面ＶＴＰと垂直ヒール平面ＶＨＰとの間のＸ軸に沿った距離として定義される打撃フェース長さ２５０を具備する。ここで、垂直トウ平面ＶＴＰは、ゴルフクラブヘッド２００の最前方点を含む地面平面ＧＰに垂直な平面であり、垂直ヒール平面ＶＨＰは、シャフト軸／リーディングエッジ平面交点２６０を含む地面平面ＧＰに垂直な平面であり、シャフト軸／リーディングエッジ平面交点２６０は、シャフト軸ＳＡがリーディングエッジ平面ＬＥＰと交差する点である。打撃フェース２１０は、スコアライン領域２５１、トウ領域２５３、およびヒール領域２５５を含む。スコアライン領域２５１は、複数のスコアライン２２４のヒール側の最大限度と複数のスコアライン２２４のトウ側の最大限度との間の打撃フェース２１０の領域として定義される。トウ領域２５３は、複数のスコアライン２２４のトウ側の最大限度と垂直トウ平面ＶＴＰとの間の打撃フェース２１０の領域として定義される。ヒール領域２５５は、複数のスコアライン２２４のヒール側の最大限度と垂直ヒール平面ＶＨＰとの間の打撃フェース２１０の領域として定義される。 The golf club head 200 includes a coordinate system centered on the face center of the striking face 210. The coordinate system includes a y-axis that extends perpendicular to the ground plane GP when the golf club head 200 is in an address position with a given loft angle and a given lie angle. The coordinate system includes an x-axis that is perpendicular to the y-axis, parallel to the striking face 210 and the ground plane GP, and extends toward the heel portion 218 of the golf club head 200. The coordinate system includes a z-axis that is perpendicular to the y-axis and x-axis and extends through the striking face 210. The golf club head 200 further defines a leading edge plane LEP that is parallel to the ground plane GP and passes through the forward-most point of the leading edge 230. The striking face 210 has a striking face length 250 defined as the distance along the X-axis between a vertical toe plane VTP and a vertical heel plane VHP when the golf club head 200 is in an address position at a specified loft angle and a specified lie angle, where the vertical toe plane VTP is a plane perpendicular to the ground plane GP that includes the forward-most point of the golf club head 200, and the vertical heel plane VHP is a plane perpendicular to the ground plane GP that includes a shaft axis/leading edge plane intersection 260, where the shaft axis SA intersects with the leading edge plane LEP. The striking face 210 includes a scoreline region 251, a toe region 253, and a heel region 255. The scoreline region 251 is defined as the area of the striking face 210 between the maximum limit of the heel side of the plurality of scorelines 224 and the maximum limit of the toe side of the plurality of scorelines 224. The toe region 253 is defined as the area of the hitting face 210 between the maximum extent of the toe side of the scorelines 224 and the vertical toe plane VTP. The heel region 255 is defined as the area of the hitting face 210 between the maximum extent of the heel side of the scorelines 224 and the vertical heel plane VHP.

ゴルフクラブヘッド１００およびゴルフクラブヘッド２００は、規定ロフト角および規定ライ角が同じであるけれども、ゴルフクラブヘッド１００のソール１１６は、ゴルフクラブヘッド２００のソール２１６とは異なる形状を具備する。図１～６に示す実施例において、ソール１１６のＹ軸に沿った最大高さは、ソール２１６のＹ軸に沿った最大高さよりも低い。ソール１１６のＹ軸に沿った最大高さが低いのは、ゴルフクラブヘッド１００のバウンス角がゴルフクラブヘッド２００のバウンス角よりも小さいためである。 Although golf club head 100 and golf club head 200 have the same specified loft angle and specified lie angle, sole 116 of golf club head 100 has a different shape than sole 216 of golf club head 200. In the embodiment shown in Figures 1-6, the maximum height of sole 116 along the Y axis is lower than the maximum height of sole 216 along the Y axis. The maximum height of sole 116 along the Y axis is lower because the bounce angle of golf club head 100 is smaller than the bounce angle of golf club head 200.

図３および図４は、アイアン型ゴルフクラブヘッドのブレード長を測定する従来の方法（本出願では地面平面ブレード長ＧＰＢＬと称する）を示す。図３に示すように、地面平面ブレード長ＧＰＢＬは、垂直トウ平面ＶＴＰとシャフト軸／地面平面交点１４０との間のｘ軸に沿った距離であり、シャフト軸／地面平面交点１４０は、ゴルフクラブヘッド１００が規定のロフト角および規定のライ角でアドレス位置にあるときに、シャフト軸ＳＡが地面平面ＧＰと交差する点である。 3 and 4 show a conventional method of measuring the blade length of an iron-type golf club head (referred to in this application as the ground plane blade length GPBL). As shown in FIG. 3, the ground plane blade length GPBL is the distance along the x-axis between the vertical toe plane VTP and the shaft axis/ground plane intersection 140, which is the point where the shaft axis SA intersects with the ground plane GP when the golf club head 100 is in the address position at a specified loft angle and a specified lie angle.

図３と同様に、図４は、地面平面ブレード長さＧＰＢＬが、垂直トウ平面ＶＴＰとシャフト軸／地面平面交点２４０との間のｘ軸に沿った距離であることを示しており、シャフト軸／地面平面交点２４０は、ゴルフクラブヘッド２００が規定のロフト角および規定のライ角でアドレス位置にあるときに、シャフト軸ＳＡが地面平面ＧＰと交差する点である。 Similar to FIG. 3, FIG. 4 shows that the ground plane blade length GPBL is the distance along the x-axis between the vertical toe plane VTP and the shaft axis/ground plane intersection 240, which is the point where the shaft axis SA intersects the ground plane GP when the golf club head 200 is in the address position at the specified loft angle and the specified lie angle.

従来のゴルフクラブヘッド設計では、ソール構成に関係なく、ロフトが同じクラブの地面平面ブレード長さＧＰＢＬを一定に保っているが、これにより、ロフトが同じゴルフクラブヘッドであっても、ヒールからトウ方向の打撃フェース長さが異なるという問題が生じる。バウンス角および／またはグラインドタイプが異なるためにｙ軸に沿ったソール寸法が変化すると、シャフト軸ＳＡが地面平面ＧＰと交差するシャフト軸ＳＡに沿った位置も変化する。シャフト軸ＳＡにはｘ軸成分があるため、シャフト軸ＳＡと地面平面ＧＰの交点をシャフト軸ＳＡに沿って下方に移動すると、垂直トウ平面ＶＴＰがヒール部分と反対の方向に移動し、打撃フェース長さが長くなる。逆に、シャフト軸ＳＡと地面平面ＧＰの交点をシャフト軸ＳＡに沿って上方に移動すると、垂直トウ平面ＶＴＰがヒール部分に向かう方向に移動し、打撃フェース長さが短くなる。したがって、固定された地面平面ブレード長ＧＰＢＬで同じロフトのゴルフクラブヘッドを設計することは、異なるソール形状のために、スコアライン領域、トウ領域、または打撃フェースのヒール領域のうち１つ以上の長さを変更することを意味する。その結果、ゴルファーは、同じロフトのゴルフクラブヘッドのアドレス位置で一貫性のないゴルフクラブヘッドサイズを目にすることになる。 Conventional golf club head designs keep the ground plane blade length GPBL constant for clubs with the same loft, regardless of sole configuration, but this creates the problem of different heel-to-toe striking face lengths for golf club heads with the same loft. As the sole dimension along the y-axis changes due to different bounce angles and/or grind types, the location along the shaft axis SA where the shaft axis SA intersects with the ground plane GP also changes. Because the shaft axis SA has an x-axis component, moving the intersection of the shaft axis SA and the ground plane GP downward along the shaft axis SA moves the vertical toe plane VTP away from the heel portion, increasing the striking face length. Conversely, moving the intersection of the shaft axis SA and the ground plane GP upward along the shaft axis SA moves the vertical toe plane VTP toward the heel portion, decreasing the striking face length. Therefore, designing golf club heads of the same loft with a fixed ground plane blade length GPBL means changing the length of one or more of the scoreline region, the toe region, or the heel region of the striking face for different sole shapes. As a result, golfers will see inconsistent golf club head sizes at address for golf club heads of the same loft.

この発明は、従来のゴルフクラブヘッド設計における上記の問題に対処する。図５および図６は、この発明の例示的な実施例を示す。図５に示すように、この発明は、ゴルフクラブヘッド１００が所定のロフト角および所定のライ角でアドレス位置にあるときに、垂直トウ平面ＶＴＰとシャフト軸／リーディングエッジ平面交点１６０との間のｘ軸に沿った距離として定義されるリーディングエッジブレード長さＬＥＢＬを利用する。図５と同様に、図６は、ゴルフクラブヘッド２００が所定のロフト角および所定のライ角でアドレス位置にあるときに、垂直トウ平面ＶＴＰとシャフト軸／リーディングエッジ平面交点２６０との間のｘ軸に沿った距離として定義されるリーディングエッジブレード長さＬＥＢＬを示す。 The present invention addresses the above problems in conventional golf club head designs. Figures 5 and 6 show an exemplary embodiment of the present invention. As shown in Figure 5, the present invention utilizes a leading edge blade length LEBL defined as the distance along the x-axis between the vertical toe plane VTP and the shaft axis/leading edge plane intersection point 160 when the golf club head 100 is in an address position at a given loft angle and a given lie angle. Similar to Figure 5, Figure 6 shows the leading edge blade length LEBL defined as the distance along the x-axis between the vertical toe plane VTP and the shaft axis/leading edge plane intersection point 260 when the golf club head 200 is in an address position at a given loft angle and a given lie angle.

この発明は、同じロフトのゴルフクラブヘッドを作成するために、一定の地面平面ブレード長さＧＰＢＬではなく、一定のリーディングエッジブレード長さＬＥＢＬを使用する。リーディングエッジブレード長さＬＥＢＬは、同じロフトを持つゴルフクラブヘッド１００およびゴルフクラブヘッド２００の両方で同じであり、そのため、ゴルフクラブヘッド１００のソール１１６のｙ軸に沿った最大高さがゴルフクラブヘッド２００のソール２１６よりも小さい場合でも、ゴルフクラブヘッド１００の打撃フェース長さ１５０は、ゴルフクラブヘッド２００の打撃フェース長さ２５０と同じである。ゴルフクラブヘッド１００の打撃フェース長さ１５０は、ゴルフクラブヘッド２００の打撃フェース長さ２５０に等しいため、打撃フェース１１０の個々の領域は、打撃フェース２１０の個々の領域と同じ長さを持つことができ、均一性が向上する。つまり、スコアライン領域１５１のｘ軸に沿った長さは、スコアライン領域２５１のｘ軸に沿った長さと等しく、トウ領域１５３のｘ軸に沿った長さは、トウ領域２５３のｘ軸に沿った長さと等しく、ヒール領域１５５のｘ軸に沿った長さは、ヒール領域２５５のｘ軸に沿った長さと等しくて良い。 This invention uses a constant leading edge blade length LEBL, rather than a constant ground plane blade length GPBL, to create golf club heads of the same loft. The leading edge blade length LEBL is the same for both golf club heads 100 and 200 with the same loft, so that the striking face length 150 of the golf club head 100 is the same as the striking face length 250 of the golf club head 200, even though the maximum height along the y-axis of the sole 116 of the golf club head 100 is smaller than the sole 216 of the golf club head 200. Since the striking face length 150 of the golf club head 100 is equal to the striking face length 250 of the golf club head 200, the individual regions of the striking face 110 can have the same length as the individual regions of the striking face 210, improving uniformity. That is, the length of the scoreline region 151 along the x-axis may be equal to the length of the scoreline region 251 along the x-axis, the length of the toe region 153 along the x-axis may be equal to the length of the toe region 253 along the x-axis, and the length of the heel region 155 along the x-axis may be equal to the length of the heel region 255 along the x-axis.

一定のリーディングエッジブレード長さＬＥＢＬを使用して同じロフトのゴルフクラブヘッドを設計すると、ゴルフクラブヘッドの打撃フェースの長さが同じになり、ソール構成に関係なくアドレス時の外観が同じになる。アドレス位置でのゴルフクラブヘッドの打撃エリアと外観が一貫していることは、打撃フェース全体で一貫したパフォーマンスを実現し、自信を与えるビジュアルを提供するために重要である。これは、同じロフトのゴルフクラブヘッドに一定の地面平面ブレード長さＧＰＢＬを使用する従来の設計よりも有利である。従来の設計では、ソール構成が変わると、打撃フェースの長さが異なり、アドレス時の外観が異なる。 Designing golf club heads of the same loft using a constant leading edge blade length LEBL results in golf club heads with the same striking face length and the same appearance at address regardless of sole configuration. A consistent striking area and appearance of the golf club head at address is important to achieve consistent performance across the striking face and provide a confidence-inspiring visual. This is an advantage over conventional designs that use a constant ground plane blade length GPBL for golf club heads of the same loft, where a change in sole configuration results in a different striking face length and a different appearance at address.

ここでは特定の実施例および態様について説明し、特定の例を示したけれども、この発明の範囲は、これらの特定の実施例および例に限定されない。当業者であれば、この発明の範囲および精神の範囲内にある他の実施例または改良点を認識するであろう。したがって、特定の構造、動作、または媒体は、例示的な実施例としてのみ開示されている。この発明の範囲は、以下の請求項およびその均等物によって定義される。 Although certain embodiments and aspects have been described herein and certain examples have been given, the scope of the invention is not limited to these specific embodiments and examples. Those skilled in the art will recognize other embodiments or modifications that are within the scope and spirit of the invention. Thus, the specific structures, operations, or media are disclosed as exemplary embodiments only. The scope of the invention is defined by the following claims and their equivalents.

Claims

In a plurality of golf club heads,
A first golf club head;
a second golf club head;
The first golf club head comprises:
A first striking face;
a first back portion extending from a first topline behind the first striking face to a first sole;
a first leading edge of a transition between the first striking face and the first sole;
a first hosel configured to receive a first shaft having a first shaft axis, the first hosel being disposed over a first heel portion, the first heel portion being disposed opposite a first toe portion;
a first coordinate system centered on a first face center of the first striking face, the first coordinate system having a first y-axis extending perpendicular to a first ground plane when the first golf club head is in a first address position with a first prescribed loft angle and a first prescribed lie angle, a first x-axis extending toward a first heel portion of the first golf club head perpendicular to the first y-axis and parallel to the first striking face, and a first z-axis perpendicular to the first y-axis and the first x-axis extending through the first striking face;
a first leading edge plane parallel to the first ground plane and passing through a forward-most point of the first leading edge;
a first shaft axis/leading edge plane intersection point located where the first shaft axis intersects the first leading edge plane;
a first vertical heel plane perpendicular to the first ground plane and passing through the first shaft axis/leading edge plane intersection;
a first vertical toe plane perpendicular to the first ground plane and passing through a forward-most point on a toe side of the first golf club head;
a first leading edge blade length defined as the distance along the x-axis between the first vertical toe plane and the first shaft axis/leading edge plane intersection;
a first striking face length defined as a distance along the first x-axis between the first vertical toe plane and the first vertical heel plane;
The second golf club head includes:
A second striking face; and
a second back portion extending from a second topline behind the second striking face to a second sole;
a second leading edge of a transition between the second striking face and the second sole;
a second hosel configured to receive a second shaft having a second shaft axis, the second hosel being disposed on a second heel portion, the second heel portion being disposed opposite the second toe portion;
a second coordinate system centered on a second face center of the second striking face, the second coordinate system having a second y-axis extending perpendicular to a second ground plane when the second golf club head is in a second address position with a second prescribed loft angle and a second prescribed lie angle, a second x-axis extending toward a second heel portion of the second golf club head perpendicular to the second y-axis and parallel to the second striking face, and a second z-axis extending through the second striking face perpendicular to the second y-axis and the second x-axis;
a second leading edge plane parallel to the second ground plane and passing through a forward-most point of the second leading edge;
a second shaft axis/leading edge plane intersection point located where the second shaft axis intersects the second leading edge plane; and
a second vertical heel plane perpendicular to the second ground plane and passing through the second shaft axis/leading edge plane intersection;
a second vertical toe plane perpendicular to the second ground plane and passing through a forward-most point on a toe side of the second golf club head;
a second leading edge blade length defined as the distance along the x-axis between the second vertical toe plane and the second shaft axis/leading edge plane intersection;
a second striking face length defined as the distance along the second x-axis between the second vertical toe plane and the second vertical heel plane;
A plurality of golf club heads, wherein the first sole shape is different from the second sole shape, and the first leading edge blade length is equal to the second leading edge blade length.

The plurality of golf club heads according to claim 1, wherein the first prescribed loft angle is equal to the second prescribed loft angle.

The plurality of golf club heads according to claim 2, wherein the first prescribed lie angle is equal to the second prescribed lie angle.

The plurality of golf club heads according to claim 2, wherein the maximum height of the first sole along the first Y-axis is different from the maximum height of the second sole along the second Y-axis.

The plurality of golf club heads according to claim 2, wherein the bounce angle of the first sole is different from the bounce angle of the second sole.

In a plurality of golf club heads,
A first golf club head;
a second golf club head;
The first golf club head comprises:
a first striking face having a first plurality of scorelines having a heel side maximum extent and a toe side maximum extent;
a first back portion extending from a first topline behind the first striking face to a first sole;
a first leading edge of a transition between the first striking face and the first sole;
a first hosel configured to receive a first shaft having a first shaft axis, the first hosel being disposed on a first heel portion, the first heel portion being disposed opposite a first toe portion;
a first coordinate system centered on a first face center of the first striking face, the first coordinate system having a first y-axis extending perpendicular to a first ground plane when the first golf club head is in a first address position with a first prescribed loft angle and a first prescribed lie angle, a first x-axis extending toward a first heel portion of the first golf club head perpendicular to the first y-axis and parallel to the first striking face, and a first z-axis perpendicular to the first y-axis and the first x-axis extending through the first striking face;
a first leading edge plane parallel to the first ground plane and passing through a forward-most point of the first leading edge;
a first shaft axis/leading edge plane intersection point located where the first shaft axis intersects the first leading edge plane;
a first vertical heel plane perpendicular to the first ground plane and passing through the first shaft axis/leading edge plane intersection;
a first vertical toe plane perpendicular to the first ground plane and passing through a forward-most point on a toe side of the first golf club head;
a first leading edge blade length defined as the distance along the x-axis between the first vertical toe plane and the first shaft axis/leading edge plane intersection;
a first striking face length defined as the distance along the first x-axis between the first vertical toe plane and the first vertical heel plane;
a first scoreline area defined as an area of the first striking face between the heel side maximum extent of the first plurality of scorelines and the toe side maximum extent of the first plurality of scorelines;
a first toe region defined as an area of the first striking face between the toe maximum extent of the first plurality of scorelines and the first vertical toe plane;
a first heel area defined as an area of the first striking face between the heel side maximum extent of the first plurality of scorelines and the first vertical heel plane;
The second golf club head includes:
a second striking face having a second plurality of scorelines having a heel side maximum extent and a toe side maximum extent;
a second back portion extending from a second topline behind the second striking face to a second sole;
a second leading edge of a transition between the second striking face and the second sole;
a second hosel configured to receive a second shaft having a second shaft axis, the second hosel being disposed on a second heel portion, the second heel portion being disposed opposite the second toe portion;
a second coordinate system centered on a second face center of the second striking face, the second coordinate system having a second y-axis extending perpendicular to a second ground plane when the second golf club head is in a second address position with a second prescribed loft angle and a second prescribed lie angle, a second x-axis extending toward a second heel portion of the second golf club head perpendicular to the second y-axis and parallel to the second striking face, and a second z-axis extending through the second striking face perpendicular to the second y-axis and the second x-axis;
a second leading edge plane parallel to the second ground plane and passing through a forward-most point of the second leading edge;
a second shaft axis/leading edge plane intersection point located where the second shaft axis intersects the second leading edge plane; and
a second vertical heel plane perpendicular to the second ground plane and passing through the second shaft axis/leading edge plane intersection;
a second vertical toe plane perpendicular to the second ground plane and passing through a forward-most point on a toe side of the second golf club head;
a second leading edge blade length defined as the distance along the x-axis between the second vertical toe plane and the second shaft axis/leading edge plane intersection;
a second striking face length defined as the distance along the second x-axis between the second vertical toe plane and the second vertical heel plane;
a second scoreline area defined as an area of the second striking face between the heel side maximum extent of the second plurality of scorelines and the toe side maximum extent of the second plurality of scorelines;
a second toe region defined as an area of the second striking face between the toe maximum extent of the second plurality of scorelines and the second vertical toe plane;
a second heel area defined as an area of the second striking face between the heel side maximum extent of the second plurality of scorelines and the second vertical heel plane;
a maximum height of the first sole along the first Y-axis is different from a maximum height of the second sole along the second Y-axis;
A plurality of golf club heads, wherein a length of the first scoreline area along the first X-axis is equal to a length of the second scoreline area along the second X-axis.

The plurality of golf club heads according to claim 6, wherein the length of the first toe region along the first x-axis is equal to the length of the second toe region along the second x-axis.

The plurality of golf club heads according to claim 7, wherein the length of the first heel region along the first x-axis is equal to the length of the second heel region along the second x-axis.

the first golf club head further comprises a first shaft axis/ground plane intersection point where the first shaft axis intersects with the first ground plane;
the second golf club head further comprises a second shaft axis/ground plane intersection point where the second shaft axis intersects the second ground plane;
7. The plurality of golf club heads of claim 6, wherein a distance between the first shaft axis/ground plane intersection and the first vertical toe plane is different from a distance between the second shaft axis/ground plane intersection and the second vertical toe plane.

In a plurality of golf club heads,
A first golf club head;
a second golf club head;
The first golf club head comprises:
a first striking face having a first plurality of scorelines having a heel side maximum extent and a toe side maximum extent;
a first back portion extending from a first topline behind the first striking face to a first sole;
a first leading edge of a transition between the first striking face and the first sole;
a first hosel configured to receive a first shaft having a first shaft axis, the first hosel being disposed on a first heel portion, the first heel portion being disposed opposite a first toe portion;
a first coordinate system centered on a first face center of the first striking face, the first coordinate system having a first y-axis extending perpendicular to a first ground plane when the first golf club head is in a first address position with a first prescribed loft angle and a first prescribed lie angle, a first x-axis extending toward a first heel portion of the first golf club head perpendicular to the first y-axis and parallel to the first striking face, and a first z-axis perpendicular to the first y-axis and the first x-axis extending through the first striking face;
a first leading edge plane parallel to the first ground plane and passing through a forward-most point of the first leading edge;
a first shaft axis/leading edge plane intersection point located where the first shaft axis intersects the first leading edge plane;
a first shaft axis/ground plane intersection point located where the first shaft axis intersects the first ground plane;
a first vertical heel plane perpendicular to the first ground plane and passing through the first shaft axis/leading edge plane intersection;
a first vertical toe plane perpendicular to the first ground plane and passing through a forward-most point on a toe side of the first golf club head;
a first leading edge blade length defined as the distance along the x-axis between the first vertical toe plane and the first shaft axis/leading edge plane intersection;
a first striking face length defined as the distance along the first x-axis between the first vertical toe plane and the first vertical heel plane;
a first scoreline area defined as an area of the first striking face between the heel side maximum extent of the first plurality of scorelines and the toe side maximum extent of the first plurality of scorelines;
a first toe region defined as an area of the first striking face between the toe maximum extent of the first plurality of scorelines and the first vertical toe plane;
a first heel area defined as an area of the first striking face between the heel side maximum extent of the first plurality of scorelines and the first vertical heel plane;
The second golf club head includes:
a second striking face having a second plurality of scorelines having a heel side maximum extent and a toe side maximum extent;
a second back portion extending from a second topline behind the second striking face to a second sole;
a second leading edge of a transition between the second striking face and the second sole;
a second hosel configured to receive a second shaft having a second shaft axis, the second hosel being disposed on a second heel portion, the second heel portion being disposed opposite the second toe portion;
a second coordinate system centered on a second face center of the second striking face, the second coordinate system having a second y-axis extending perpendicular to a second ground plane when the second golf club head is in a second address position with a second prescribed loft angle and a second prescribed lie angle, a second x-axis extending toward a second heel portion of the second golf club head perpendicular to the second y-axis and parallel to the second striking face, and a second z-axis extending through the second striking face perpendicular to the second y-axis and the second x-axis;
a second leading edge plane parallel to the second ground plane and passing through a forward-most point of the second leading edge;
a second shaft axis/leading edge plane intersection point located where the second shaft axis intersects the second leading edge plane; and
a second shaft axis/ground plane intersection point located where the second shaft axis intersects the second ground plane;
a second vertical heel plane perpendicular to the second ground plane and passing through the second shaft axis/leading edge plane intersection;
a second vertical toe plane perpendicular to the second ground plane and passing through a forward-most point on a toe side of the second golf club head;
a second leading edge blade length defined as the distance along the second x-axis between the second vertical toe plane and the second shaft axis/leading edge plane intersection;
a second striking face length defined as the distance along the second x-axis between the second vertical toe plane and the second vertical heel plane;
a second scoreline area defined as an area of the second striking face between the heel side maximum extent of the second plurality of scorelines and the toe side maximum extent of the second plurality of scorelines;
a second toe region defined as an area of the second striking face between the toe maximum extent of the second plurality of scorelines and the second vertical toe plane;
a second heel area defined as an area of the second striking face between the heel side maximum extent of the second plurality of scorelines and the second vertical heel plane;
The first prescribed loft angle is equal to the second prescribed loft angle,
The shape of the first sole is different from the shape of the second sole,
a distance between the first shaft axis/ground plane intersection and the first vertical toe plane that is different from a distance between the second shaft axis/ground plane intersection and the second vertical toe plane.

The plurality of golf club heads according to claim 10, wherein the maximum height of the first sole along the first Y-axis is different from the maximum height of the second sole along the second Y-axis.

The plurality of golf club heads according to claim 11, wherein the length of the first striking face is equal to the length of the second striking face.

The plurality of golf club heads according to claim 12, wherein the first prescribed lie angle is equal to the second prescribed lie angle.

The plurality of golf club heads according to claim 11, wherein the length of the first scoreline region along the first x-axis is equal to the length of the second scoreline region along the second x-axis.

The plurality of golf club heads according to claim 14, wherein the length of the first toe region along the first x-axis is equal to the length of the second toe region along the second x-axis.

The plurality of golf club heads of claim 15, wherein the length of the first heel region along the first x-axis is equal to the length of the second heel region along the second x-axis.