JPH09271544A - Iron club head - Google Patents
Iron club headInfo
- Publication number
- JPH09271544A JPH09271544A JP8110304A JP11030496A JPH09271544A JP H09271544 A JPH09271544 A JP H09271544A JP 8110304 A JP8110304 A JP 8110304A JP 11030496 A JP11030496 A JP 11030496A JP H09271544 A JPH09271544 A JP H09271544A
- Authority
- JP
- Japan
- Prior art keywords
- gravity
- center
- weight body
- face
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Golf Clubs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ゴルフクラブのア
イアンクラブヘッドに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an iron club head for a golf club.
【０００２】[0002]
【従来の技術】ゴルフ用具に於て、飛びと方向性は最も
重要な機能要素である。アイアンクラブにおいては、主
としてボールをグリーンにのせる際に用いられることか
ら、特に打球の方向性が重要である。ゴルフクラブでボ
ールを打撃する際、ヘッドのフェースのスウィートスポ
ットの位置で打撃すれば、論理上、ボールは真っ直ぐに
飛ぶ。また、スウィートスポットから外れた位置でボー
ルを打撃した場合、衝突中にヘッドが回転し、それによ
ってボールの飛びの方向性が悪くなる。2. Description of the Related Art In golf equipment, flight and direction are the most important functional elements. In iron clubs, the directionality of the hit ball is particularly important because it is mainly used when the ball is placed on the green. When hitting a ball with a golf club, if the ball is hit at the sweet spot position on the face of the head, the ball theoretically flies straight. Further, when the ball is hit at a position out of the sweet spot, the head rotates during the collision, which deteriorates the directionality of the ball flight.
【０００３】アベレージゴルファーにとって常にスウィ
ートスポットの位置で打撃することはほぼ不可能であ
る。また、上級者にとってもスウィートスポットを外れ
る距離は小さいとはいえ、より真っ直ぐに近い方向へボ
ールを飛ばしたいという願望は尽きることがない。しか
して、従来、打球の方向性を改善するために、ヘッドの
重心廻りの慣性モーメントを大きくする試みがなされて
きた。It is almost impossible for an average golfer to always hit at the sweet spot. Also, even for advanced players, the distance to leave the sweet spot is small, but the desire to fly the ball in a straighter, closer direction is not exhausted. In the past, attempts have been made to increase the moment of inertia about the center of gravity of the head in order to improve the directionality of the hit ball.
【０００４】例えば、特開昭61−50574 号に開示されて
いるように、ヘッドのフェースに平行な上下方向に延び
るＸ軸と、重心を通りフェースに平行な水平方向に延び
るＹ軸と、重心を通りフェースに垂直な方向に延びるＺ
軸との、夫々の軸廻りの慣性モーメントを増加させるよ
うなヘッドの重量配分を設定したアイアンクラブヘッド
が公知であった。For example, as disclosed in Japanese Patent Laid-Open No. 61-50574, an X axis extending in the vertical direction parallel to the face of the head, a Y axis extending in the horizontal direction passing through the center of gravity and parallel to the face, and a center of gravity. Z extending through in the direction perpendicular to the face
Iron club heads have been known in which the weight distribution of the heads is set so as to increase the moment of inertia about the respective shafts.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、アベレ
ージゴルファーから上級者に至るまで、上述のように慣
性モーメントを大きくすることにより方向性を改善した
アイアンクラブに満足しているわけでは無く、一層方向
性の良いアイアンクラブを求めているのが実状である。However, not only average golfers but also advanced players are satisfied with the iron club whose directionality is improved by increasing the moment of inertia as described above, and the directionality is further improved. The reality is that we are looking for a good iron club.
【０００６】上述のような実状をふまえて本発明者等が
シミュレーション及び実験を行った結果、ボールの飛び
の方向性に関係するアイアンクラブヘッドの力学諸量
は、ヘッドの重心廻りの慣性モーメントのみならず、重
心深度にも依存していることを、本発明者等は見つけ
た。さらに、従来のアイアンクラブヘッドの重心深度
は、全て２mm以上であることを、本発明者等は見つけ
た。As a result of simulations and experiments conducted by the inventors of the present invention based on the above-mentioned actual conditions, the mechanical quantities of the iron club head relating to the direction of flight of the ball are only the moment of inertia about the center of gravity of the head. However, the present inventors have found that the depth of center of gravity is also dependent. Further, the present inventors have found that the depth of the center of gravity of conventional iron club heads is 2 mm or more.
【０００７】そこで、本発明は、上述のような従来のア
イアンクラブヘッドとは全く着想点を変えて、スウィー
トスポットから外れた位置でボールを打撃した際の打球
の方向性に優れたアイアンクラブヘッドを提供すること
を目的とする。Therefore, the present invention completely changes the idea of the conventional iron club head as described above, and is excellent in the directionality of the hit ball when hitting the ball at a position outside the sweet spot. The purpose is to provide.
【０００８】[0008]
【課題を解決するための手段】上述の目的を達成するた
めに本発明に係るアイアンクラブヘッドは、重心深度を
−２mm以上かつ＋２mm未満に設定したものである。In order to achieve the above object, an iron club head according to the present invention has a depth of center of gravity set to -2 mm or more and less than +2 mm.
【０００９】また、本発明に係るアイアンクラブヘッド
は、基本材質にて全体を作った場合の仮想重心を通りフ
ェースに平行な平面よりも、少なくともフェース側に、
比重の大きな材質の重量体を埋設して、重心深度が−２
mm以上かつ＋２mm未満となるように構成したものであ
る。Further, the iron club head according to the present invention is at least on the face side with respect to the plane parallel to the face that passes through the virtual center of gravity when the whole is made of the basic material.
By embedding a heavy body made of a material with a large specific gravity, the depth of the center of gravity is -2.
It is configured so that it is not less than mm and less than +2 mm.
【００１０】また、本発明に係るアイアンクラブヘッド
は、基本材質にて全体を作った場合の仮想重心を通りフ
ェースに平行な平面よりも、少なくともバックフェース
側に、比重の小さな材質の軽量体を配設して、重心深度
が−２mm以上かつ＋２mm未満となるように構成したもの
である。In the iron club head according to the present invention, a lightweight body made of a material having a small specific gravity is provided at least on the back face side rather than a plane which passes through the virtual center of gravity and is parallel to the face when the whole is made of the basic material. It is arranged so that the depth of the center of gravity is not less than −2 mm and less than +2 mm.
【００１１】また、本発明に係るアイアンクラブヘッド
は、ヒール部から斜め上方に延びるシャフト連結用のネ
ック部を有するアイアンクラグヘッドに於て、フェース
側のトウ部側下部に第１重量体を配設すると共に、上記
ネック部の少なくとも上部に第２重量体を配設し、か
つ、上記第１重量体の比重と上記第２重量体の比重を、
残部を成す基本材質の比重よりも、大きく設定して、重
心深度が−２mm以上かつ＋２mm未満となるように構成し
たものである。Further, the iron club head according to the present invention is an iron crag head having a shaft connecting neck portion extending obliquely upward from the heel portion, wherein the first weight body is arranged at the lower portion of the face side toe portion side. And a second weight body is provided on at least an upper portion of the neck portion, and the specific gravity of the first weight body and the specific gravity of the second weight body are
The specific gravity is set to be larger than the specific gravity of the remaining basic material so that the depth of the center of gravity is −2 mm or more and less than +2 mm.
【００１２】[0012]
【発明の実施の形態】以下、実施の形態に基き本発明を
詳説する。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail based on the embodiments.
【００１３】図１は本発明に係るアイアンクラブヘッド
の実施の一形態を示し、１はフェース、２はソール、３
はトウ部、４はヒール部、５はヒール部４から斜め上方
に延びるネック部である。FIG. 1 shows an embodiment of an iron club head according to the present invention, where 1 is a face, 2 is a sole, and 3
Is a toe part, 4 is a heel part, and 5 is a neck part extending obliquely upward from the heel part 4.
【００１４】しかして、フェース１側のトウ部３側下部
に第１重量体６を配設すると共に、ネック部５の上半部
に第２重量体７を配設する。かつ、第１重量体６の比重
と第２重量体７の比重を、残部８を成す基本材質の比重
よりも大きく設定して、重心深度が−２mm以上かつ＋２
mm未満となるように構成する。Therefore, the first weight body 6 is arranged in the lower portion of the face 1 side on the toe portion 3 side, and the second weight body 7 is arranged in the upper half portion of the neck portion 5. Moreover, the specific gravity of the first weight body 6 and the specific gravity of the second weight body 7 are set to be larger than the specific gravity of the basic material forming the remaining portion 8, and the depth of the center of gravity is −2 mm or more and +2.
Configure to be less than mm.
【００１５】残部８は、図２の分解図に示すように、こ
のアイアンクラブヘッドの大部分を占めており、その残
部８のフェース１側のトウ部３側下部に切欠部10を設
け、その切欠部10に小片状の第１重量体６（重量体９）
を固着する。また、残部８は、短寸のネック部形成部11
を有しており、そのネック部形成部11の上端に、円筒状
の第２重量体７を連続状に固着する。As shown in the exploded view of FIG. 2, the remaining portion 8 occupies most of the iron club head, and the notch portion 10 is provided in the lower portion of the remaining portion 8 on the face 1 side toe portion 3 side. Small piece-shaped first weight body 6 (weight body 9) in the notch 10
To fix. In addition, the remaining portion 8 is a short neck portion forming portion 11
The second weight body 7 having a cylindrical shape is continuously fixed to the upper end of the neck portion forming portion 11.
【００１６】なお、残部８に第１重量体６と第２重量体
７を固着するための接合方法としては、樹脂等による接
着や、各種溶接、ねじ止め、鋳ぐるみ等があげられる。Incidentally, as a joining method for fixing the first weight body 6 and the second weight body 7 to the remaining portion 8, adhesion by resin or the like, various welding, screwing, cast gurney and the like can be mentioned.
【００１７】また、残部８と第１重量体６と第２重量体
７の材質としては、ステンレス、鉄、チタン合金、アル
ミニウム合金、マグネシウム合金、真鍮、タングステン
等の金属や繊維強化プラスチック等があげられ、それら
の内の比重の大小により、残部８用の材質と、第１重量
体６及び第２重量体７用の材質を、適宜選択する。な
お、上記以外の金属やプラスチックを用いてもよい場合
もある。Examples of the material of the balance 8, the first weight body 6 and the second weight body 7 include metals such as stainless steel, iron, titanium alloys, aluminum alloys, magnesium alloys, brass and tungsten, and fiber reinforced plastics. The material for the balance 8 and the materials for the first weight body 6 and the second weight body 7 are appropriately selected according to the size of the specific gravity among them. In addition, metal and plastic other than the above may be used in some cases.
【００１８】上述の構成により、図３に示すように、こ
のアイアンクラブヘッドの重心深度Ｄは、従来のアイア
ンクラブヘッドの重心深度Ｄ0 よりも小さく（浅く）な
る。ここで、重心深度Ｄとは、このヘッドの重心Ｇから
フェース１に下ろした垂線Ｍの長さのことと定義する。
そして、重心Ｇがヘッド内部に存在するときの重心深度
Ｄの数値に正の符号（＋）を付ける。また、重心Ｇがヘ
ッドの外部に存在するとき、重心深度Ｄはこのヘッドの
重心Ｇからフェース１に下ろした垂線Ｍの長さに負の符
号（−）をつけたものとする。With the above configuration, as shown in FIG. 3, the depth D of gravity of the iron club head is smaller (shallow) than the depth D 0 of gravity of the conventional iron club head. Here, the center-of-gravity depth D is defined as the length of a perpendicular line M drawn from the center of gravity G of the head to the face 1.
Then, a positive sign (+) is added to the numerical value of the depth D of the center of gravity when the center of gravity G exists inside the head. When the center of gravity G exists outside the head, the center of gravity depth D is the length of the perpendicular line M drawn from the center of gravity G of the head to the face 1 with a negative sign (-).
【００１９】第１重量体６は、基本材質にて全体を作っ
た場合の仮想重心Ｇ0 を通りフェース１に平行な平面Ｎ
よりもフェース１側に埋設される。つまり、このアイア
ンクラブヘッドは、基本材質にて全体を作った場合の仮
想重心Ｇ0 を通りフェース１に平行な平面Ｎよりもフェ
ース１側に、比重の大きな材質の重量体９を埋設して、
重心深度Ｄが−２mm以上かつ＋２mm未満となるように構
成したものである。The first weight body 6 is a plane N parallel to the face 1 and passing through a virtual center of gravity G 0 when the whole is made of a basic material.
Is buried closer to the face 1 side. That is, in this iron club head, the weight body 9 made of a material having a large specific gravity is embedded on the face 1 side of the plane N parallel to the face 1 and passing through the virtual center of gravity G 0 when the whole is made of the basic material. ,
The depth of center of gravity D is configured to be −2 mm or more and less than +2 mm.
【００２０】なお、図例では、第１重量体６の全体が、
上記平面Ｎよりもフェース１側に配設されているが、第
１重量体６の一部が平面Ｎよりもバックフェース側──
─フェース１とは反対側───に位置するように構成し
てもよい場合がある。In the illustrated example, the entire first weight body 6 is
Although it is arranged on the face 1 side with respect to the plane N, a part of the first weight body 6 is on the back face side with respect to the plane N.
In some cases, it may be configured to be located on the side opposite to the face 1.
【００２１】しかして、図４の断面図に示すように、第
１重量体６の重心Ｇ1 が残部８の重心Ｇ3 よりも前方
（フェース１側）に位置し、かつ、第２重量体７の重心
Ｇ2 がフェース１よりも前方に位置しているため、この
アイアンクラブヘッドの重心Ｇは、前述の仮想重心Ｇ0
よりも前方のフェース１の面近傍に位置する。As shown in the sectional view of FIG. 4, the center of gravity G 1 of the first weight body 6 is located in front of the center of gravity G 3 of the remaining portion 8 (face 1 side), and the second weight body is Since the center of gravity G 2 of 7 is located in front of the face 1, the center of gravity G of this iron club head is the virtual center of gravity G 0 described above.
It is located in the vicinity of the face 1 in front of the face 1.
【００２２】ところで、図５は、上述の図１〜図４のク
ラブヘッドと同一の外形寸法であって全体を基本材質に
て形成した比較例としてのアイアンクラブヘッドであっ
て、その重心は前述の仮想重心Ｇ0 となる。その図５の
ヘッドの仮想重心Ｇ0 の位置と図４の本発明のアイアン
クラブヘッドの重心Ｇの位置とを比較すれば明らかなよ
うに、本発明のヘッドは、従来のヘッドの重心Ｇ0 より
もかなり前方に位置している。By the way, FIG. 5 shows an iron club head as a comparative example which has the same outer dimensions as those of the club heads shown in FIGS. Is the virtual center of gravity G 0 . As is clear from comparison between the position of the virtual center of gravity G 0 of the head of FIG. 5 and the position of the center of gravity G of the iron club head of the present invention of FIG. 4, the head of the present invention has the center of gravity G 0 of the conventional head. It is located far ahead of.
【００２３】しかして、この（図１〜図４の）アイアン
クラブヘッドを装着したゴルフクラブによれば、重心深
度Ｄが従来のアイアンクラブヘッドの重心深度よりも小
さいので、スウィートスポット───重心Ｇからフェー
ス１に下ろした垂線Ｍとフェース１の面とが交わる点近
傍───から外れた位置でボールを打撃した場合に、飛
球の方向性が良くなる。さらに、重心Ｇを通る上下方向
の軸心廻りの慣性モーメントが大きくなるので、一層方
向性に優れる。However, according to the golf club equipped with the iron club head (of FIGS. 1 to 4), the depth of center of gravity D is smaller than the depth of center of gravity of the conventional iron club head. When the ball is hit at a position deviating from the vicinity of a point where the perpendicular M drawn from G to the face 1 and the face of the face 1 intersect, the directionality of the flying ball is improved. Furthermore, since the moment of inertia about the vertical axis passing through the center of gravity G becomes large, the directionality is further improved.
【００２４】なお、重心深度が小さい方が飛球の方向安
定性に優れるということのメカニズムについては、次の
ように推定される。即ち、図６に示すように、ヘッドＨ
がゴルフボールＢに衝突したときにヘッドＨがボールＢ
から受ける力は、フェースＦに垂直な力Ｆ2 と、衝突中
にヘッドＨが回転して傾くことでボールＢとヘッドＨと
の間に生じる摩擦力Ｆ3 である。The mechanism that the smaller the depth of the center of gravity is, the more excellent the directional stability of the flying ball is, is estimated as follows. That is, as shown in FIG.
Head H hits the ball B when it hits the golf ball B.
The force received from is a force F 2 perpendicular to the face F and a frictional force F 3 generated between the ball B and the head H when the head H rotates and tilts during a collision.
【００２５】そのフェースＦに垂直な力Ｆ2 と摩擦力Ｆ
3 との合力Ｆ1 がヘッドＨを回転させる力となり、その
合力Ｆ1 の作用線と重心との距離が大きい方がヘッドＨ
が良く回転する───即ちヘッドＨの振れ角が大きくな
る───はずである。A force F 2 perpendicular to the face F and a friction force F
The resultant force F 1 with 3 becomes the force for rotating the head H, and the head H is the one where the distance between the action line of the resultant force F 1 and the center of gravity is large
Should rotate well, that is, the deflection angle of the head H should be large.
【００２６】しかして、重心深度が浅い場合の重心Ｇ4
と重心深度が深い場合の重心Ｇ5 とを比較すると、重心
深度が浅い方（重心Ｇ4 ）が、ヘッドＨの受ける合力Ｆ
1 の作用線と重心との距離───即ち重心Ｇ4 ，Ｇ5 か
ら合力Ｆ1 の作用線に下ろした垂線の長さ───は小さ
いということが分かる。従って、重心深度が浅い方が、
ヘッドＨの振れ角が小さくなり、飛球の方向性が良くな
ると推定できる。The center of gravity G 4 when the center of gravity depth is shallow
When the center of gravity is deep and the center of gravity G 5 is deep, the head F having a shallower center of gravity depth (center of gravity G 4 ) receives the head force F.
It can be seen that the distance between the line of action 1 and the center of gravity, that is, the length of the perpendicular line drawn from the centers of gravity G 4 and G 5 to the line of action of the resultant force F 1 is small. Therefore, if the depth of center of gravity is shallow,
It can be estimated that the deflection angle of the head H becomes small and the directionality of the flying ball improves.
【００２７】なお、重心深度の値を−２mmよりも小さく
することは、現状の一般的なアイアンクラブヘッドの形
状を概ね保ったままで実現することは困難であり、＋２
mm以上であると、スウィートスポットから外れた位置で
ボールを打撃したときに衝突中のヘッドの回転が大き
く、ボールの飛びの方向性が悪い。It should be noted that it is difficult to reduce the value of the depth of the center of gravity to less than -2 mm, while keeping the shape of a general iron club head in the current state, generally, +2.
If it is more than mm, when the ball is hit at a position away from the sweet spot, the rotation of the head during a collision is large and the directionality of the ball flight is poor.
【００２８】また、第２重量体７は、ネック部５の少な
くとも上部に配設されていれば良く、例えば、ネック部
５のほぼ全体を第２重量体７にて形成するも自由であ
る。The second weight body 7 has only to be disposed at least on the upper portion of the neck portion 5, and for example, almost the entire neck portion 5 may be formed by the second weight body 7.
【００２９】次に、図７と図８は、他の実施の形態を示
し、残部８のフェース１側の下部全体に切欠部10を設
け、その切欠部10に重量体９を固着したものである。な
お、ネック部５全体が残部８を成す基本材質にて形成さ
れる。他の構成については、図１〜図４のものと同様で
ある。Next, FIGS. 7 and 8 show another embodiment in which a notch 10 is provided in the entire lower portion of the remaining part 8 on the face 1 side, and the weight body 9 is fixed to the notch 10. is there. The entire neck portion 5 is formed of the basic material forming the remaining portion 8. Other configurations are the same as those in FIGS.
【００３０】このように構成すれば、重心深度が小さく
なって飛球の方向性が良くなると共に、重心Ｇを低くす
ることができ、ボールを高く上げ易いという利点があ
る。According to this structure, the depth of the center of gravity is reduced, the directionality of the flying ball is improved, the center of gravity G can be lowered, and the ball can be raised easily.
【００３１】また、図９と図10は、別の実施の形態を示
し、残部８のバックフェース12側───即ちフェースと
は反対側───の上部略全体に切欠部10を設け、その切
欠部10に（基本材質よりも比重の小さい材質の）軽量体
13を固着したものである。9 and 10 show another embodiment, in which a notch 10 is provided in the upper portion of the remaining portion 8 on the back face 12 side, that is, on the side opposite to the face, A lightweight body (of a material having a smaller specific gravity than the basic material) in the cutout portion 10
13 is fixed.
【００３２】つまり、図11に示すように、基本材質にて
全体を作った場合の仮想重心Ｇ0 を通りフェース１に平
行な平面Ｎよりもバックフェース12側に、比重の小さな
材質の軽量体13を配設して、重心深度Ｄが−２mm以上か
つ＋２mm未満となるように構成する。なお、ネック部５
全体が残部８を成す基本材質にて形成される。That is, as shown in FIG. 11, a lightweight body made of a material having a small specific gravity on the back face 12 side of the plane N parallel to the face 1 and passing through the virtual center of gravity G 0 when the whole is made of the basic material. 13 is provided so that the depth of center of gravity D is −2 mm or more and less than +2 mm. The neck 5
The whole is made of the basic material forming the remaining portion 8.
【００３３】このように構成すれば、重心深度が小さく
なって飛球の方向性が良くなる。また、重心Ｇが低くな
って、ボールを高く上げ易い。According to this structure, the depth of the center of gravity is reduced and the directionality of the flying ball is improved. In addition, the center of gravity G becomes low, and the ball can be raised easily.
【００３４】次に、本発明のアイアンクラブヘッドの効
果を検証すべく実施したシミュレーション及び実験につ
いて説明する。Next, simulations and experiments conducted to verify the effect of the iron club head of the present invention will be described.
【００３５】有限要素法に基づくシミュレーションとし
て、上下方向と左右方向と前後方向の夫々の軸心廻りの
慣性モーメントを５番アイアン相当に設定したヘッドモ
デルについて、ヘッドの重心を通りフェース面に平行な
上下方向の軸心廻りの慣性モーメントをパラメータとし
て、打球位置のスウィートスポットからの左右方向の距
離とボールの左右の飛球方向（左右方向の振れ角）との
関係を算出した。As a simulation based on the finite element method, a head model in which the moments of inertia around the respective axial centers in the up-down direction, the left-right direction, and the front-rear direction are set to correspond to the 5th iron Using the vertical moment of inertia about the axis as a parameter, the relationship between the lateral distance from the sweet spot at the hitting position and the left and right flight directions (horizontal deflection angle) of the ball was calculated.
【００３６】その結果を図12のグラフ図に示す。この図
12から、上下方向の軸心廻りの慣性モーメントが大きく
なれば、飛球の左右の振れ角が小さくなって方向性が良
いということが分かった。The results are shown in the graph of FIG. This figure
From 12, it was found that the larger the moment of inertia about the vertical axis is, the smaller the deflection angle of the ball on the left and right, and the better the directionality.
【００３７】また、上記と同様のヘッドモデルについ
て、重心深度をパラメータとして、打球位置のスウィー
トスポットからの左右方向の距離とボールの左右の飛球
方向（左右方向の振れ角）との関係を算出した。その結
果を図13のグラフ図に示す。With respect to the same head model as described above, the relationship between the lateral distance from the sweet spot at the hitting position and the left and right flight directions of the ball (horizontal deflection angle) is calculated using the depth of the center of gravity as a parameter. did. The result is shown in the graph of FIG.
【００３８】この図13から、重心深度が小さいほど、ス
ウィートスポットから外れた位置でボールを打撃した場
合の飛球の左右方向の振れ角が小さいことが分かった。From this FIG. 13, it was found that the smaller the depth of the center of gravity, the smaller the deflection angle of the flight ball in the left-right direction when hitting the ball at a position deviated from the sweet spot.
【００３９】[0039]
【実施例】次に、試作クラブを作製して実験を行った。
具体的には、次の表１に示すように、本発明の実施例と
して、のヘッドを作成した。また、従来例（比較
例）として、のアイアンヘッドを使用した。[Examples] Next, a trial club was prepared and an experiment was conducted.
Specifically, as shown in Table 1 below, a head was manufactured as an example of the present invention. Further, as a conventional example (comparative example), the iron head of was used.
【００４０】[0040]
【表１】 [Table 1]
【００４１】なお、本発明の実施例のヘッドの形
状・寸法は、住友ゴム工業株式会社製アイアンヘッド
（商品名MAXFLI DP-201）の５番アイアンのヘッドの形
状・寸法と概ね同一とし、その構造は、図１〜図４に示
したヘッドと同様とした。また、従来例のヘッドとし
て、住友ゴム工業株式会社製アイアンヘッド（商品名MA
XFLI DP-201）の５番アイアンのヘッドそのものを用い
た。この実施例に於て重量体を配設することで増加した
重量はバックフェースを研削することで調整した。The shape and size of the head of the embodiment of the present invention are substantially the same as the shape and size of the No. 5 iron head of the iron head (product name MAXFLI DP-201) manufactured by Sumitomo Rubber Industries, Ltd. Was the same as the head shown in FIGS. As a conventional head, an iron head manufactured by Sumitomo Rubber Industries, Ltd. (trade name MA
The head itself of the 5th iron of XFLI DP-201) was used. In this example, the weight increased by disposing the weight body was adjusted by grinding the back face.
【００４２】しかして、上述の実施例のヘッドと従来例
のヘッドについて、スウィートスポットを基準点Ａと
し、その基準点Ａと、基準点Ａから10mmトウ部側へ離れ
た点Ｂにて打ったときの飛球方向（左右方向の振れ角）
を測定した。With respect to the head of the above-described embodiment and the head of the conventional example, the sweet spot was used as the reference point A, and the reference point A and the point B distant from the reference point A by 10 mm on the toe side were used. Direction of flight (deflection angle in left and right direction)
Was measured.
【００４３】なお、インパクトの条件を合わせるため
に、同一のシャフト（住友ゴム工業株式会社製：商品名
ツアーブラックＶ２：カーボンシャフトのＲ）を上記
のヘッドに取付けた。また、打撃にはスウィング
ロボットを用い、ヘッド速度を約38ｍ／ｓで行った。そ
して、１つの打点での振れ角の値は、トウ部側への振れ
を正の値として、５回の測定値の平均をとった。その結
果を次の表２に示す。To match the impact conditions, the same shaft (Sumitomo Rubber Industries, Ltd .: trade name Tour Black V2: carbon shaft R) was attached to the above head. A swing robot was used for hitting at a head speed of about 38 m / s. For the value of the deflection angle at one hit point, the deflection to the toe side was set as a positive value, and the average of the five measurements was taken. The results are shown in Table 2 below.
【００４４】[0044]
【表２】 [Table 2]
【００４５】表２より、従来例に比して重心深度が小
さい本発明の実施例のヘッドの方が、打点ＡＢの
振れ角の差が小さくなっており、飛球の方向性が良いこ
とが分かる。また、実施例の内では、重心深度が
小さいほど打点ＡＢの振れ角の差が小さく、飛球の方向
性が良い。From Table 2, it can be seen that the head of the embodiment of the present invention, which has a smaller depth of the center of gravity than the conventional example, has a smaller difference in the deflection angle of the hitting point AB and has a better directionality of the flying ball. I understand. Further, in the examples, the smaller the depth of the center of gravity, the smaller the difference between the deflection angles of the hit points AB, and the better the directionality of the flying ball.
【００４６】なお、本実施例にはヘッドのバックフェー
ス側に凹部のないフラットバックタイプのアイアンを用
いたが、凹部のあるいわゆるキャビティタイプのアイア
ンにおいても同様に構成できることは言うまでもない。Although a flat back type iron having no recess on the back face side of the head is used in this embodiment, it goes without saying that a so-called cavity type iron having a recess can be similarly configured.
【００４７】[0047]
【発明の効果】本発明は上述の構成により、次のような
著大な効果を奏する。The present invention has the following remarkable effects by the above-mentioned structure.
【００４８】請求項１記載のアイアンクラブヘッドによ
れば、スウィートスポットから左右に外れた位置でボー
ルを打ったときに、飛球の左右方向のずれを（従来のア
イアンクラブヘッドに比して）小さくすることができ、
方向性が良くなる。According to the iron club head of the first aspect, when the ball is hit at a position deviating from the sweet spot to the left and right, the deviation of the flying ball in the left and right direction (compared to the conventional iron club head). Can be smaller,
Directionality improves.
【００４９】請求項２記載のアイアンクラブヘッドによ
れば、請求項１記載のものと同様の効果を奏すると共
に、容易に製造できる。According to the iron club head of the second aspect, the same effects as those of the first aspect can be obtained, and the iron club head can be easily manufactured.
【００５０】請求項３記載のアイアンクラブヘッドによ
れば、請求項１記載のものと同様の効果を奏すると共
に、容易に製造できる。また、ヘッドの形状及び大きさ
を従来のアイアンクラブヘッドと同一としたまま、ヘッ
ド全体の重量を軽くすることができる。According to the iron club head of the third aspect, the same effects as those of the first aspect can be obtained, and the iron club head can be easily manufactured. Further, the weight of the entire head can be reduced while keeping the same shape and size of the head as the conventional iron club head.
【００５１】請求項４記載のアイアンクラブヘッドによ
れば、請求項１記載のものと同様の効果を奏すると共
に、容易に製造できる。また、重心を通る上下方向の軸
心廻りの慣性モーメントが大きくなるので、一層方向性
に優れる。According to the iron club head of the fourth aspect, the same effects as those of the first aspect can be obtained, and the iron club head can be easily manufactured. Further, since the moment of inertia about the vertical axis passing through the center of gravity becomes large, the directionality is further improved.
【図１】本発明の実施の一形態を示す斜視図である。FIG. 1 is a perspective view showing an embodiment of the present invention.
【図２】分解斜視図である。FIG. 2 is an exploded perspective view.
【図３】要部拡大断面平面図である。FIG. 3 is an enlarged sectional plan view of an essential part.
【図４】要部断面平面図である。FIG. 4 is a cross-sectional plan view of a main part.
【図５】比較例の要部断面平面図である。FIG. 5 is a cross-sectional plan view of a main part of a comparative example.
【図６】打撃時のメカニズムを説明するための断面背面
図である。FIG. 6 is a cross-sectional rear view for explaining the mechanism during striking.
【図７】他の実施の形態の斜視図である。FIG. 7 is a perspective view of another embodiment.
【図８】分解斜視図である。FIG. 8 is an exploded perspective view.
【図９】別の実施の形態の斜視図である。FIG. 9 is a perspective view of another embodiment.
【図10】分解斜視図である。FIG. 10 is an exploded perspective view.
【図11】要部拡大断面平面図である。FIG. 11 is an enlarged sectional plan view of an essential part.
【図12】シミュレーションの結果を示すグラフ図であ
る。FIG. 12 is a graph showing the result of simulation.
【図13】シミュレーションの結果を示すグラフ図であ
る。FIG. 13 is a graph showing the result of simulation.
１ フェース ３ トウ部 ４ ヒール部 ５ ネック部 ６ 第１重量体 ７ 第２重量体 ８ 残部 ９ 重量体 12 バックフェース 13 軽量体 Ｄ 重心深度 Ｇ0 仮想重心 Ｎ 平面1 face 3 toe part 4 heel part 5 neck part 6 first weight body 7 second weight body 8 rest 9 weight body 12 back face 13 light weight body D center of gravity depth G 0 virtual center of gravity N plane
Claims (4)
に設定したことを特徴とするアイアンクラブヘッド。1. An iron club head having a center of gravity depth D of −2 mm or more and less than +2 mm.
心Ｇ0 を通りフェース１に平行な平面Ｎよりも、少なく
ともフェース１側に、比重の大きな材質の重量体９を埋
設して、重心深度Ｄが−２mm以上かつ＋２mm未満となる
ように構成したことを特徴とするアイアンクラブヘッ
ド。2. A weight body 9 made of a material having a large specific gravity is embedded at least on the face 1 side with respect to a plane N parallel to the face 1 and passing through an imaginary center of gravity G 0 when the whole is made of a basic material, An iron club head characterized in that the depth of center of gravity D is configured to be −2 mm or more and less than +2 mm.
心Ｇ0 を通りフェース１に平行な平面Ｎよりも、少なく
ともバックフェース12側に、比重の小さな材質の軽量体
13を配設して、重心深度Ｄが−２mm以上かつ＋２mm未満
となるように構成したことを特徴とするアイアンクラブ
ヘッド。3. A lightweight body made of a material having a small specific gravity at least on the back face 12 side with respect to a plane N passing through a virtual center of gravity G 0 and made parallel to the face 1 when the whole is made of a basic material.
An iron club head having 13 arranged so that the depth of center of gravity D is not less than -2 mm and less than +2 mm.
ト連結用のネック部５を有するアイアンクラグヘッドに
於て、フェース１側のトウ部３側下部に第１重量体６を
配設すると共に、上記ネック部５の少なくとも上部に第
２重量体７を配設し、かつ、上記第１重量体６の比重と
上記第２重量体７の比重を、残部８を成す基本材質の比
重よりも、大きく設定して、重心深度Ｄが−２mm以上か
つ＋２mm未満となるように構成したことを特徴とするア
イアンクラブヘッド。4. An iron crag head having a neck portion 5 for shaft connection extending obliquely upward from a heel portion 4, wherein a first weight body 6 is disposed below a toe portion 3 on the face 1 side. The second weight body 7 is arranged at least on the upper part of the neck portion 5, and the specific gravity of the first weight body 6 and the specific gravity of the second weight body 7 are more than those of the basic material forming the remaining portion 8. An iron club head characterized by being set to a large value so that the depth of center of gravity D is −2 mm or more and less than +2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8110304A JP3022316B2 (en) | 1996-04-04 | 1996-04-04 | Iron club head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8110304A JP3022316B2 (en) | 1996-04-04 | 1996-04-04 | Iron club head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09271544A true JPH09271544A (en) | 1997-10-21 |
| JP3022316B2 JP3022316B2 (en) | 2000-03-21 |
Family
ID=14532312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8110304A Expired - Fee Related JP3022316B2 (en) | 1996-04-04 | 1996-04-04 | Iron club head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3022316B2 (en) |
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| US20120064996A1 (en) * | 2007-09-13 | 2012-03-15 | Gilbert Peter J | Iron-type golf club |
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| US20120064996A1 (en) * | 2007-09-13 | 2012-03-15 | Gilbert Peter J | Iron-type golf club |
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| Publication number | Publication date |
|---|---|
| JP3022316B2 (en) | 2000-03-21 |
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