JP2015188615A - golf club head and golf club - Google Patents

golf club head and golf club Download PDF

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Publication number
JP2015188615A
JP2015188615A JP2014068479A JP2014068479A JP2015188615A JP 2015188615 A JP2015188615 A JP 2015188615A JP 2014068479 A JP2014068479 A JP 2014068479A JP 2014068479 A JP2014068479 A JP 2014068479A JP 2015188615 A JP2015188615 A JP 2015188615A
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golf club
specific gravity
club head
main body
face surface
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JP6396666B2 (en
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土井　一宏
Kazuhiro Doi
一宏 土井
諭信 坂本
Satonobu Sakamoto
諭信 坂本
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Mizuno Corp
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Mizuno Corp
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Priority to US14/669,249 priority patent/US20150273287A1/en
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/047—Heads iron-type
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B2053/0491—Heads with added weights, e.g. changeable, replaceable
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00—Characteristics of used materials
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/0408—Heads characterised by specific dimensions, e.g. thickness

Abstract

PROBLEM TO BE SOLVED: To provide a golf club head and a golf club capable of effectively improving a ball striking feeling.SOLUTION: The golf club head includes: a body part 2 having a face plane 2A and a recess 3 formed on the back side of the face plane 2A; an intermediate member 4 that is disposed in the recess 3, includes a first member 4a and a second member 4b, and has a small specific gravity compared with that of the body part 2; and a high specific-gravity member 5 that is disposed at an opposite side of the body part 2 viewed from the intermediate member 4 and has a large specific gravity compared with that of the intermediate member 4.

Description

本発明は、ゴルフクラブヘッドおよびゴルフクラブに関する。   The present invention relates to a golf club head and a golf club.

ゴルフクラブヘッドにおいて、打球部を有するフェース部に対しては様々な構造が採用されている。   In golf club heads, various structures are employed for the face portion having a hitting ball portion.

たとえば、ゴルフクラブヘッドのフェース部を複数の材料が積層した多層構造とすることが従来から行われている。特開２００７−１６０７０２号公報には、表面層の反発力を活用しつつインパクトの衝撃を和らげることを目的として、３層構造を有する多層金属クラッド板をフェース部材として用いたゴルフクラブヘッドが記載されている。   For example, conventionally, the face portion of a golf club head has a multilayer structure in which a plurality of materials are laminated. Japanese Patent Application Laid-Open No. 2007-160702 describes a golf club head using a multilayer metal clad plate having a three-layer structure as a face member for the purpose of reducing impact impact while utilizing the repulsive force of the surface layer. ing.

特開２００７−１６０７０２号公報JP 2007-160702 A

しかしながら、特開２００７−１６０７０２号公報に記載のゴルフクラブヘッドを含む従来のゴルフクラブヘッドでは、打球感の向上を効果的に実現することは困難である。   However, with the conventional golf club head including the golf club head described in JP-A-2007-160702, it is difficult to effectively improve the feel at impact.

一般的に、ゴルファーは、打球音が大きくかつ打球音が減衰しにくい場合には良好な打球感が得られない。打球感を向上させるためには、打球時のフェース部のたわみを抑制させるためにフェース部を厚く設けることが考えられるが、この場合にはゴルフクラブヘッドの慣性モーメントが小さくなり、打球時にゴルフクラブヘッドの回転が生じやすくなって飛距離が低下するなどの問題が生じ得る。   Generally, a golfer cannot obtain a good shot feeling when the hitting sound is loud and the hitting sound is difficult to attenuate. In order to improve the feel at impact, it is conceivable to provide a thicker face portion in order to suppress the deflection of the face portion at the time of hitting the ball. In this case, however, the moment of inertia of the golf club head is reduced, and the golf club is at the time of hitting the ball. There is a problem that the rotation of the head is likely to occur and the flight distance is reduced.

本発明は上記のような課題を解決するためになされたものである。本発明の主たる目的は、打球感の向上を効果的に実現しつつ、慣性モーメントの低下を抑えることのできるゴルフクラブヘッドおよびゴルフクラブを提供することにある。   The present invention has been made to solve the above-described problems. A main object of the present invention is to provide a golf club head and a golf club that can effectively suppress the decrease in moment of inertia while effectively improving the feel at impact.

本発明に係るゴルフクラブヘッドは、フェース面と、前記フェース面の裏側に形成されている凹部とを有する本体部と、前記凹部内に配置されており、第１部材と第２部材とを含み、前記本体部と比べて比重が小さい中間部材と、前記中間部材から見て前記本体部の反対側に配置されており、前記中間部材と比べて比重が大きい高比重部材とを備える。   A golf club head according to the present invention includes a main body having a face surface and a recess formed on the back side of the face surface, and is disposed in the recess, and includes a first member and a second member. And an intermediate member having a specific gravity smaller than that of the main body, and a high specific gravity member disposed on the opposite side of the main body as viewed from the intermediate member and having a higher specific gravity than that of the intermediate member.

本発明によれば、打球感の向上を効果的に実現しつつ、慣性モーメントの低下を抑えることのできるゴルフクラブヘッドおよびゴルフクラブを提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the golf club head and golf club which can suppress the fall of a moment of inertia can be provided, implement | achieving the improvement of a hit feeling effectively.

本実施の形態に係るゴルフクラブヘッドおよびゴルフクラブを説明するための側面図である。It is a side view for demonstrating the golf club head and golf club which concern on this Embodiment. 図１中の線分ＩＩ−ＩＩにおける断面図である。It is sectional drawing in line segment II-II in FIG. 図１中の線分ＩＩＩ−ＩＩＩにおける断面図である。It is sectional drawing in line segment III-III in FIG. 本実施の形態に係るゴルフクラブヘッドの変形例を説明するための断面図である。It is sectional drawing for demonstrating the modification of the golf club head which concerns on this Embodiment. 本実施の形態に係るゴルフクラブヘッドの他の変形例を説明するための断面図である。It is sectional drawing for demonstrating the other modification of the golf club head which concerns on this Embodiment. 本実施の形態に係るゴルフクラブヘッドのさらに他の変形例を説明するための断面図である。It is sectional drawing for demonstrating the further another modification of the golf club head which concerns on this Embodiment.

以下、図面を参照して、本発明の実施の形態について説明する。なお、以下の図面において同一または相当する部分には同一の参照番号を付しその説明は繰返さない。   Embodiments of the present invention will be described below with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

図１〜図３を参照して、本実施の形態に係るゴルフクラブおよびゴルフクラブヘッド１について説明する。本実施の形態に係るゴルフクラブは、シャフト２０の一方端にゴルフクラブヘッド１が接続されている。シャフト２０の一方端と反対側に位置する他方端にはグリップ部が形成されている。本実施の形態に係るゴルフクラブヘッド１は、本体部２と、中間部材４と、高比重部材５とを備える。   The golf club and golf club head 1 according to the present embodiment will be described with reference to FIGS. In the golf club according to the present embodiment, the golf club head 1 is connected to one end of the shaft 20. A grip portion is formed at the other end of the shaft 20 opposite to the one end. A golf club head 1 according to the present embodiment includes a main body 2, an intermediate member 4, and a high specific gravity member 5.

本体部２は、フェース面２Ａと、フェース面２Ａの裏側に形成されている凹部３とを有する。フェース面２Ａは打球面を構成している。本体部２はフェース面２Ａに打撃位置ＨＰを有している。打撃位置ＨＰは、トゥヒール方向におけるスコアラインセンター上であって、リーティングエッジ（フェース面２Ａのソール部６側に位置する端部）からフェース面に沿って１５ｍｍ上側の場所に位置する点を中心とする半径１０ｍｍの円内と定義される。   The main body 2 has a face surface 2A and a recess 3 formed on the back side of the face surface 2A. The face surface 2A constitutes a ball striking surface. The main body 2 has an impact position HP on the face surface 2A. The hit position HP is on the score line center in the toe heel direction, and is centered on a point located 15 mm above the reading surface (the end portion located on the sole portion 6 side of the face surface 2A) along the face surface. Defined as a circle with a radius of 10 mm.

フェース面２Ａには、図示しない複数のスコアラインが形成されていてもよい。本体部２を構成する材料は、任意の金属材料とすることができるが、たとえば軟鉄（ＪＩＳ規格に規定されているＳ２５Ｃ）である。   A plurality of score lines (not shown) may be formed on the face surface 2A. Although the material which comprises the main-body part 2 can be made into arbitrary metal materials, it is a soft iron (S25C prescribed | regulated to JIS specification), for example.

凹部３は、本体部２において、少なくともその一部が、フェース面２Ａ側から見てフェース面２Ａの打撃位置ＨＰと重なる領域に形成されているのが好ましい。フェース面２Ａの裏側から凹部３を平面視したときの凹部３の平面形状は、任意の形状とすることができるが、好ましくはヒール部１ｈ側からトゥ部１ｔに至る方向における幅がソール部６側からトップエッジ部７側に至る方向における幅よりも長い横長形状を有している。また、ソール部６側からトップエッジ部７側に至る方向における凹部３の幅は、ヒール部１ｈ側およびトゥ部１ｔ側に位置する領域よりも中央部１ｃ近傍の領域の方が長く設けられているのが好ましい。   It is preferable that at least a part of the recess 3 is formed in a region of the main body 2 that overlaps the hit position HP of the face surface 2A when viewed from the face surface 2A side. The planar shape of the concave portion 3 when the concave portion 3 is viewed in plan from the back side of the face surface 2A can be any shape, but preferably the width in the direction from the heel portion 1h side to the toe portion 1t is the sole portion 6 It has a horizontally long shape that is longer than the width in the direction from the side to the top edge portion 7 side. Further, the width of the concave portion 3 in the direction from the sole portion 6 side to the top edge portion 7 side is longer in the region near the central portion 1c than in the regions located on the heel portion 1h side and the toe portion 1t side. It is preferable.

フェース面２Ａの裏側において本体部２の外形に沿って形成されている凹部３の内周面は、底面３Ａと、底面３Ａと交差する方向に延びる側面３Ｂとからなっている。凹部３の構造は、凹部３内に中間部材４を空隙無く固定することができる限りにおいて、任意に選択し得る。たとえば、底面３Ａと側面３Ｂとのなす角度は９０度以上であり、好ましくは鈍角である。   The inner peripheral surface of the recess 3 formed along the outer shape of the main body 2 on the back side of the face surface 2A is composed of a bottom surface 3A and a side surface 3B extending in a direction intersecting the bottom surface 3A. The structure of the recess 3 can be arbitrarily selected as long as the intermediate member 4 can be fixed in the recess 3 without a gap. For example, the angle formed between the bottom surface 3A and the side surface 3B is 90 degrees or more, preferably an obtuse angle.

凹部３の底面３Ａは、本体部２を挟んでフェース面２Ａと対向しており、一つの平面として設けられている。凹部３が形成されている領域における本体部２の厚みは、たとえば２．６ｍｍ以上３．４ｍｍ以下である。側面３Ｂは、底面３Ａと交差する複数の面が互いに交差するように設けられていてもよい。   The bottom surface 3A of the recess 3 is opposed to the face surface 2A with the main body 2 interposed therebetween, and is provided as a single plane. The thickness of the main body 2 in the region where the recess 3 is formed is, for example, not less than 2.6 mm and not more than 3.4 mm. The side surface 3B may be provided so that a plurality of surfaces intersecting the bottom surface 3A intersect each other.

中間部材４は、凹部３内に配置されている。フェース面２Ａの裏側から凹部３を平面視したときの中間部材４の平面形状は、任意の形状とすることができるが、好ましくはヒール部１ｈ側からトゥ部１ｔに至る方向における長さがソール部６側からトップエッジ部７側に至る方向における長さよりも長い横長形状を有している。   The intermediate member 4 is disposed in the recess 3. The planar shape of the intermediate member 4 when the concave portion 3 is viewed in plan from the back side of the face surface 2A can be any shape, but preferably the length in the direction from the heel portion 1h side to the toe portion 1t is the sole shape. It has a horizontally long shape longer than the length in the direction from the portion 6 side to the top edge portion 7 side.

中間部材４は、第１部材４ａと第２部材４ｂとを含む。第１部材４ａと第２部材４ｂとは、フェース面２Ａに垂直な方向において積層するように構成されている。言い換えると、第１部材４ａは凹部３の底面３Ａと直接接続されているが、第２部材４ｂは凹部３の底面３Ａと直接接続されていない。   The intermediate member 4 includes a first member 4a and a second member 4b. The first member 4a and the second member 4b are configured to be stacked in a direction perpendicular to the face surface 2A. In other words, the first member 4a is directly connected to the bottom surface 3A of the recess 3, but the second member 4b is not directly connected to the bottom surface 3A of the recess 3.

第１部材４ａを構成する材料は、本体部２および後述する高比重部材５よりも比重が小さい任意の金属材料とすればよい。第１部材４ａを構成する材料はたとえば純チタン（Ｔｉ）やチタン合金、あるいはアルミ合金やマグネシウム合金などである。   The material constituting the first member 4a may be any metal material having a specific gravity smaller than that of the main body 2 and the high specific gravity member 5 described later. The material constituting the first member 4a is, for example, pure titanium (Ti), a titanium alloy, an aluminum alloy, a magnesium alloy, or the like.

第２部材４ｂを構成する材料は、本体部２および後述する高比重部材５よりも比重が小さい任意の材料とすればよく、好ましくは第２部材４ｂの比重＜第１部材４ａの比重との関係を満たす材料である。第２部材４ｂを構成する材料としては、たとえばＡＢＳ（Ａｃｒｙｌｏｎｉｔｒｉｌｅ Ｂｕｔａｄｉｅｎｅ Ｓｔｙｒｅｎｅ）樹脂やエポキシ樹脂である。第２部材４ｂは、表面をメッキ層（図示しない）で覆われていていてもよい。メッキ層を構成する材料は、たとえばニッケル・クロム（Ｎｉ・Ｃｒ）である。メッキ層を構成する材料は任意の材料とすることができるが、メッキ層に比重の大きい材料を用いる場合には、メッキ層の膜厚がフェース面２Ａに垂直な方向における第２部材４ｂの幅と比べて十分に薄いのが好ましい。また、上記の比重の関係を満たしていれば、第２部材４ｂとしてアルミ合金やマグネシウム合金を使用することも可能である。   The material constituting the second member 4b may be any material having a specific gravity smaller than that of the main body 2 and the high specific gravity member 5 described later, and preferably the specific gravity of the second member 4b <the specific gravity of the first member 4a. It is a material that satisfies the relationship. The material constituting the second member 4b is, for example, ABS (Acrylonitrile Butadiene Styrene) resin or epoxy resin. The surface of the second member 4b may be covered with a plating layer (not shown). The material constituting the plating layer is, for example, nickel / chromium (Ni / Cr). The material constituting the plating layer can be any material, but when a material having a large specific gravity is used for the plating layer, the width of the second member 4b in the direction in which the thickness of the plating layer is perpendicular to the face surface 2A. It is preferable that the thickness is sufficiently thin. Moreover, as long as the above-described specific gravity relationship is satisfied, an aluminum alloy or a magnesium alloy can be used as the second member 4b.

フェース面２Ａに近接し、本体部２と接続されている第１部材４ａの比重は、高比重部材５と接続されている第２部材４ｂの比重と比べて大きい方が好ましい。なぜなら、フェース面２Ａの直後には、フェース（本体部２）のたわみを抑制するために金属材料を配置するのが望まれ、その一方で中間部材４全体としては軽量化が望まれる。このため、第２部材４ｂは金属材料よりなる第１部材４ａよりも比重の軽い樹脂などの材料が採用されるのが好ましい。   It is preferable that the specific gravity of the first member 4a adjacent to the face surface 2A and connected to the main body 2 is larger than the specific gravity of the second member 4b connected to the high specific gravity member 5. This is because it is desirable to dispose a metal material immediately after the face surface 2A in order to suppress the deflection of the face (main body portion 2), while reducing the weight of the intermediate member 4 as a whole. For this reason, it is preferable that the second member 4b is made of a material such as a resin having a lighter specific gravity than the first member 4a made of a metal material.

図２を参照して、第１部材４ａは、フェース面２Ａに垂直な方向での厚みがソール部６側からトップエッジ部７側に至る方向において均一でなくてもよい。第１部材４ａの上記厚みは、ソール部６側においてトップエッジ部７側よりも厚く設けられているのが好ましい。   Referring to FIG. 2, the thickness of first member 4a in the direction perpendicular to face surface 2A may not be uniform in the direction from sole 6 side to top edge 7 side. It is preferable that the thickness of the first member 4a is greater on the sole portion 6 side than on the top edge portion 7 side.

このようすれば、複合部材として構成されている中間部材４において、第２部材４ｂと比べて比重が大きい第１部材４ａが直方体として構成されている場合と比べて、第１部材４ａの重心を低くすることができる。そのため、ゴルフクラブヘッド１の重心位置を低くすることができる。   In this way, in the intermediate member 4 configured as a composite member, the center of gravity of the first member 4a is larger than that in the case where the first member 4a having a larger specific gravity than the second member 4b is configured as a rectangular parallelepiped. Can be lowered. Therefore, the position of the center of gravity of the golf club head 1 can be lowered.

図３を参照して、第１部材４ａは、フェース面２Ａに垂直な方向での厚みがヒール部１ｈ側から中央部１ｃを経てトゥ部１ｔ側に至る方向において均一ではないほうが好ましい。具体的には、中央部１ｃでの中間部材４の上記厚みは、ヒール部１ｈやトゥ部１ｔでの厚みと比べて厚く設けられているのが好ましい。   Referring to FIG. 3, it is preferable that the thickness of the first member 4a in the direction perpendicular to the face surface 2A is not uniform in the direction from the heel portion 1h side through the central portion 1c to the toe portion 1t side. Specifically, it is preferable that the thickness of the intermediate member 4 at the center portion 1c is thicker than the thicknesses at the heel portion 1h and the toe portion 1t.

つまり、第１部材４ａは、ヒール部１ｈ側およびトゥ部１ｔ側よりも中央部１ｃ近傍が厚く設けられている。このため、打球時において最もたわみやすい中央部１ｃの変位量を低減することができる。これにより、打球音を小さくすることができ、良好な打感を得ることができる。   That is, the first member 4a is provided in the vicinity of the central portion 1c thicker than the heel portion 1h side and the toe portion 1t side. For this reason, it is possible to reduce the amount of displacement of the central portion 1c that is most flexible when hitting. Thereby, a hitting sound can be made small and a favorable hit feeling can be obtained.

この場合、第２部材４ｂのフェース面２Ａに垂直かつトップソール方向での厚みは、打撃位置ＨＰに含まれる範囲において最も厚くなるのが好ましい。   In this case, it is preferable that the thickness of the second member 4b perpendicular to the face surface 2A and in the top sole direction is the largest in a range included in the hitting position HP.

中間部材４は、上述のように第１部材４ａおよび第２部材４ｂがいずれも本体部２や高比重部材５よりも比重が小さい材料で構成されているため、全体として本体部２や高比重部材５よりも比重が小さい。中間部材４を凹部３に固定したときのフェース面２Ａに垂直な方向における中間部材４の厚みは、たとえば２．５ｍｍ以上１０．５ｍｍ以下である。   As described above, since the first member 4a and the second member 4b are both made of a material whose specific gravity is smaller than that of the main body 2 and the high specific gravity member 5, the intermediate member 4 as a whole has the main body 2 and high specific gravity. Specific gravity is smaller than member 5. The thickness of the intermediate member 4 in the direction perpendicular to the face surface 2A when the intermediate member 4 is fixed to the recess 3 is, for example, not less than 2.5 mm and not more than 10.5 mm.

高比重部材５は、中間部材４から見て本体部２の反対側に配置されている。高比重部材５は、中間部材４における第２部材４ｂの少なくとも一部と接合されている。言い換えると、高比重部材５は、ゴルフクラブヘッド１においてフェース面２Ａ側から後方に最も離れた位置に形成されている。高比重部材５は、中間部材４においてフェース面２Ａ側と反対側の表面の全体を覆うように形成されていてもよいが、中間部材４の上記表面においてソール部６側に位置する領域上に形成されていてもよい。高比重部材５は、ゴルフクラブヘッド１をフェース面２Ａの反対側から見たときに、凹部３の少なくとも一部と重なるように設けられている。   The high specific gravity member 5 is disposed on the opposite side of the main body 2 as viewed from the intermediate member 4. The high specific gravity member 5 is joined to at least a part of the second member 4 b in the intermediate member 4. In other words, the high specific gravity member 5 is formed at a position farthest away from the face surface 2A side in the golf club head 1. The high specific gravity member 5 may be formed so as to cover the entire surface of the intermediate member 4 on the side opposite to the face surface 2A side. However, on the surface of the intermediate member 4 on the sole portion 6 side. It may be formed. The high specific gravity member 5 is provided so as to overlap at least a part of the recess 3 when the golf club head 1 is viewed from the opposite side of the face surface 2A.

高比重部材５は、任意の形状を有していればよく、たとえば板状部材が屈曲した構造を有している。高比重部材５は、フェース面２Ａ側に位置して中間部材４と接続する面と、その反対側に位置して表出している面とがたとえば平行に設けられていてもよい。   The high specific gravity member 5 only needs to have an arbitrary shape. For example, the high specific gravity member 5 has a structure in which a plate-like member is bent. In the high specific gravity member 5, a surface that is located on the face surface 2 </ b> A side and connected to the intermediate member 4 and a surface that is located on the opposite side and exposed may be provided in parallel, for example.

高比重部材５は、中間部材４と比べて比重が大きい。高比重部材５を構成する材料は、中間部材４よりも比重が大きい材料であり、たとえばステンレス鋼（ＳＵＳ)であり、好ましくはステンテス鋼帯（ＳＵＳ３０４ＣＳＰ）である。高比重部材５の厚みは、たとえば０．３ｍｍ以上０．５ｍｍ以下である。なお、高比重部材５の比重は、本体部２の比重と同等程度であればよい。本体部２の比重と高比重部材５の比重とが略同じ比重を採る限りにおいて、高比重部材５の比重は本体部２の比重よりもわずかに小さくてもよいし、わずかに大きくてもよい。   The high specific gravity member 5 has a higher specific gravity than the intermediate member 4. The material constituting the high specific gravity member 5 is a material having a specific gravity greater than that of the intermediate member 4, for example, stainless steel (SUS), and preferably a stainless steel strip (SUS304CSP). The thickness of the high specific gravity member 5 is, for example, not less than 0.3 mm and not more than 0.5 mm. The specific gravity of the high specific gravity member 5 may be about the same as the specific gravity of the main body 2. As long as the specific gravity of the main body 2 and the specific gravity of the high specific gravity member 5 take substantially the same specific gravity, the specific gravity of the high specific gravity member 5 may be slightly smaller or slightly larger than the specific gravity of the main body 2. .

本体部２、中間部材４、および高比重部材５は、中空部分を有さずに一体として形成されている。すなわち、ゴルフクラブヘッド１の内部（本体部２、中間部材４、および高比重部材５の各内部）は、中空部分を有しておらず、密な構造を有している。   The main body 2, the intermediate member 4, and the high specific gravity member 5 are integrally formed without having a hollow portion. That is, the interior of the golf club head 1 (the interior of the main body 2, the intermediate member 4, and the high specific gravity member 5) does not have a hollow portion and has a dense structure.

本体部２と中間部材４との間、および中間部材４と高比重部材５の間は、本体部２と中間部材４と高比重部材５とが１つのゴルフクラブヘッド１として打球時においても脱離等起こさない限りにおいて、それぞれ任意の方法により接続されていればよい。本体部２と中間部材４とは、たとえば圧入により接続されているのが好ましい。具体的には、本体部２の凹部３の寸法よりも大きく、凹部３の平面形状と相似する平面形状を有する第１部材４ａを凹部３内に圧入することにより、本体部２と第１部材４ａとは接続されていているのが好ましい。このとき、本体部２を加熱して熱膨張させている状態でその凹部３に第１部材４ａを配置し、その後本体部２を冷却して熱収縮させることにより、本体部２の凹部３内に第１部材４ａを圧入させることができる。このようにすれば、本体部２と中間部材４との接合強度を高めることができる。   Between the main body 2 and the intermediate member 4, and between the intermediate member 4 and the high specific gravity member 5, the main body 2, the intermediate member 4 and the high specific gravity member 5 are removed as one golf club head 1 even at the time of hitting. As long as they are not separated, they may be connected by any method. The main body 2 and the intermediate member 4 are preferably connected by press-fitting, for example. Specifically, the main body 2 and the first member are pressed by pressing a first member 4 a having a planar shape that is larger than the size of the concave portion 3 of the main body 2 and similar to the planar shape of the concave 3 into the concave 3. It is preferably connected to 4a. At this time, the first member 4a is disposed in the concave portion 3 in a state where the main body portion 2 is heated and thermally expanded, and then the main body portion 2 is cooled and thermally contracted, whereby the inner portion of the main body portion 2 is reduced. The 1st member 4a can be press-fitted to. In this way, the bonding strength between the main body 2 and the intermediate member 4 can be increased.

第１部材４ａと第２部材４ｂとは両面テープにより接合されていてもよい。また、第２部材４ｂと高比重部材５とは両面テープにより接合されていてもよい。このとき、第１部材４ａと第２部材４ｂとの接合界面は、第２部材４ｂと高比重部材５との接合界面よりもフェース面２Ａに近く変位量が大きいため、第１部材４ａと第２部材４ｂとの接合に用いる両面テープには、第２部材４ｂと高比重部材５との接合に用いる両面テープよりも高い強度が求められる。そのため、たとえば第１部材４ａと第２部材４ｂとの接合に用いる両面テープは、第２部材４ｂと高比重部材５との接合に用いる両面テープの厚みよりも厚くてもよい。   The first member 4a and the second member 4b may be joined by a double-sided tape. Moreover, the 2nd member 4b and the high specific gravity member 5 may be joined by the double-sided tape. At this time, the joining interface between the first member 4a and the second member 4b is closer to the face surface 2A and has a larger displacement than the joining interface between the second member 4b and the high specific gravity member 5, so the first member 4a and the second member 4b The double-sided tape used for joining the two members 4b is required to have higher strength than the double-sided tape used for joining the second member 4b and the high specific gravity member 5. Therefore, for example, the double-sided tape used for joining the first member 4 a and the second member 4 b may be thicker than the thickness of the double-sided tape used for joining the second member 4 b and the high specific gravity member 5.

次に、本実施の形態に係るゴルフクラブヘッド１の作用効果について説明する。ゴルフクラブヘッド１は、フェース面２Ａと、フェース面２Ａの裏側に形成されている凹部３とを有する本体部２と、凹部３内に配置されており、第１部材４ａと第２部材４ｂとを含み、本体部２と比べて比重が小さい中間部材４と、中間部材４から見て本体部２の反対側に配置されており、中間部材４と比べて比重が大きい高比重部材５とを備える。   Next, functions and effects of the golf club head 1 according to the present embodiment will be described. The golf club head 1 is disposed in the recess 3 with a main body 2 having a face surface 2A and a recess 3 formed on the back side of the face 2A, and a first member 4a and a second member 4b. An intermediate member 4 having a smaller specific gravity than the main body 2 and a high specific gravity member 5 disposed on the opposite side of the main body 2 as viewed from the intermediate member 4 and having a higher specific gravity than the intermediate member 4. Prepare.

このようにすれば、本体部２、中間部材４、および高比重部材５が接続されることにより構成されているゴルフクラブヘッド１の打球部の厚みを厚くすることができる。これにより、打球時に生じるヘッドのたわみを軽減させて打球音を小さくすることができ、ゴルフクラブヘッド１の打球感を向上させることができる。   If it does in this way, the thickness of the hit | ball hitting part of the golf club head 1 comprised by connecting the main-body part 2, the intermediate member 4, and the high specific gravity member 5 can be thickened. Thereby, the deflection of the head generated at the time of hitting can be reduced, the hitting sound can be reduced, and the hit feeling of the golf club head 1 can be improved.

このとき、中間部材４が本体部２よりも低比重の材料で構成されているため、ゴルフクラブヘッド１の厚肉化に伴うゴルフクラブヘッド１の質量増加を抑えることができる。この結果、ゴルフクラブヘッド１は慣性モーメントの低下が抑制されている。   At this time, since the intermediate member 4 is made of a material having a specific gravity lower than that of the main body 2, an increase in the mass of the golf club head 1 accompanying the increase in the thickness of the golf club head 1 can be suppressed. As a result, the golf club head 1 is restrained from lowering the moment of inertia.

また、中間部材４に対し、比重の高い材料からなる高比重部材５がフェース面２Ａから最も離れた位置に設けられているため、ゴルフクラブヘッド１の重心深度（ゴルフクラブヘッド１の重心からフェース面２Ａまでの距離）を深くすることができる。その結果、中間部材４を含まない従来のゴルフクラブヘッドと比べて、慣性モーメントを大きくすることができる。ここで、ゴルフクラブヘッド１の慣性モーメントは、ゴルフクラブヘッド１の重心を通る鉛直方向に延びる線を軸としたときの慣性モーメントと、ゴルフクラブヘッド１の重心を通る水平方向に延びる線を軸としたときの慣性モーメントをいう。これにより、ゴルフクラブヘッドのスイートスポットを外して打撃した場合、スイートスポットから打点がずれることでゴルフクラブヘッド１が重心を中心として回転するが、ゴルフクラブヘッド１の慣性モーメントを高めることができるので、ゴルフクラブヘッド１の回転を抑制することができる。その結果、打球方向や飛距離について高い安定性を実現することができる。   Further, since the high specific gravity member 5 made of a material having a high specific gravity with respect to the intermediate member 4 is provided at the position farthest from the face surface 2A, the center of gravity depth of the golf club head 1 (from the center of gravity of the golf club head 1 to the face) The distance to the surface 2A can be increased. As a result, the moment of inertia can be increased as compared with a conventional golf club head that does not include the intermediate member 4. Here, the moment of inertia of the golf club head 1 is based on the moment of inertia when a line extending in the vertical direction passing through the center of gravity of the golf club head 1 is used as an axis and the line extending in the horizontal direction passing through the center of gravity of the golf club head 1. Is the moment of inertia. As a result, when the golf club head is removed from the sweet spot and hit, the golf club head 1 rotates around the center of gravity by shifting the hit point from the sweet spot, but the moment of inertia of the golf club head 1 can be increased. The rotation of the golf club head 1 can be suppressed. As a result, it is possible to achieve high stability with respect to the hitting direction and the flight distance.

また、中間部材４が第１部材４ａと第２部材４ｂとで構成されているため、任意の材料を組み合わせることにより様々な特性を有する中間部材４を得ることができる。たとえば、フェース面２Ａに近接して本体部２に接続される第１部材４ａが、その接続法などにより材料が限定される場合にも、第２部材４ｂを第１部材４ａよりもさらに低比重な材料で構成することにより、中間部材４全体としてより低比重とすることができる。   Moreover, since the intermediate member 4 is comprised by the 1st member 4a and the 2nd member 4b, the intermediate member 4 which has various characteristics can be obtained by combining arbitrary materials. For example, even when the material of the first member 4a connected to the main body 2 in the vicinity of the face surface 2A is limited by the connection method or the like, the second member 4b has a lower specific gravity than the first member 4a. By using a simple material, the intermediate member 4 as a whole can have a lower specific gravity.

好ましくは、第１部材４ａは金属材料により構成されており、第２部材４ｂは樹脂材料により構成されている。そのため、本体部２や高比重部材５よりも低比重とすることができるので慣性モーメントを大きくすることができる。   Preferably, the first member 4a is made of a metal material, and the second member 4b is made of a resin material. Therefore, since the specific gravity can be lower than that of the main body 2 and the high specific gravity member 5, the moment of inertia can be increased.

また、凹部３は、フェース面２Ａ側から見てフェース面２Ａの打撃位置ＨＰと重なる領域に形成されていることにより、打球時においてたわみの大きい打撃位置ＨＰと重なる領域を厚肉化することができるため、より効果的に打球感を向上させることができる。   Further, the recess 3 is formed in a region overlapping with the striking position HP of the face surface 2A when viewed from the face surface 2A side, so that the region overlapping with the striking position HP having a large deflection at the time of hitting the ball can be thickened. Therefore, it is possible to improve the feel at impact more effectively.

また、中間部材４において、第１部材４ａは本体部２と接合されており、第２部材４ｂは高比重部材５と接合されている。つまり、第１部材４ａと第２部材４ｂとは、フェース面２Ａに垂直な方向において積層するように構成されているのが好ましい。そのため、フェース面２Ａ内での打球特性のばらつきを抑制することができる。   In the intermediate member 4, the first member 4 a is joined to the main body 2, and the second member 4 b is joined to the high specific gravity member 5. That is, the first member 4a and the second member 4b are preferably configured to be stacked in a direction perpendicular to the face surface 2A. Therefore, variation in hitting characteristics within the face surface 2A can be suppressed.

また、ヒール部１ｈからトゥ部１ｔに向かう方向において、第１部材４ａの中央部４ａｃの厚みが第１部材４ａにおける中央部４ａｃ以外の部分（ヒール部１ｈ側やトゥ部１ｔ側に位置する部分）の厚みより相対的に厚くなるように設けられており、第１部材４ａの中央部４ａｃがフェース面２Ａの打撃位置ＨＰと重なるように設けられている。これにより、ヒール部１ｈからトゥ部１ｔに向かう方向において打球時のたわみが大きい打撃位置ＨＰ（中央部１ｃ）のたわみを効果的に抑制することができ、打球音を小さくすることができる。   Further, in the direction from the heel portion 1h toward the toe portion 1t, the thickness of the central portion 4ac of the first member 4a is a portion other than the central portion 4ac in the first member 4a (a portion located on the heel portion 1h side or the toe portion 1t side). ) So that the central portion 4ac of the first member 4a overlaps the striking position HP of the face surface 2A. Thereby, in the direction from the heel portion 1h toward the toe portion 1t, the deflection at the hit position HP (center portion 1c) with a large deflection at the time of hitting can be effectively suppressed, and the hitting sound can be reduced.

第１部材４ａと第２部材４ｂとの間、および中間部材４と高比重部材５の間は、それぞれ接着剤を介して接合されていてもよい。   The first member 4a and the second member 4b, and the intermediate member 4 and the high specific gravity member 5 may be joined via an adhesive, respectively.

また、本体部２、中間部材４、および高比重部材５は、中空部分を有さずに連続的に積層されている。このため、内部に中空部分を有しているゴルフクラブヘッドと比べて、ゴルフクラブヘッドのたわみを効果的に抑制することができる。その結果、ゴルフクラブヘッド１によれば打球感を効果的に向上させることができる。   Moreover, the main-body part 2, the intermediate member 4, and the high specific gravity member 5 are laminated | stacked continuously, without having a hollow part. For this reason, compared with the golf club head which has a hollow part inside, the deflection | deviation of a golf club head can be suppressed effectively. As a result, according to the golf club head 1, the feel at impact can be effectively improved.

本実施の形態に係るゴルフクラブはゴルフクラブヘッド１を備えるため、打球感の向上を効果的に実現しつつ、慣性モーメントの低下を抑えることができる。   Since the golf club according to the present embodiment includes the golf club head 1, it is possible to effectively reduce the moment of inertia while effectively improving the feel at impact.

本実施の形態に係る中間部材４において、第１部材４ａは本体部２と接合されており、第２部材４ｂは高比重部材５と接合されているがこれに限られるものではない。   In the intermediate member 4 according to the present embodiment, the first member 4a is joined to the main body 2 and the second member 4b is joined to the high specific gravity member 5, but the present invention is not limited to this.

図４を参照して、たとえば第２部材４ｂが本体部２と接合されており、第１部材４ａが高比重部材５と接合されていてもよい。言い換えると、ゴルフクラブヘッド１は、フェース面２Ａに垂直な方向において、フェース面２Ａ側から第２部材４ｂ、第１部材４ａ、および高比重部材５の順で中空部分を有さずに積層された構成を有していてもよい。この場合には、本体部２よりも低比重の材料で構成されている中間部材４が本体部２に接続されていることにより、ゴルフクラブヘッド１の慣性モーメントをさらに大きくすることができ、重心深度もさらに深くすることができる。   Referring to FIG. 4, for example, second member 4 b may be joined to main body portion 2, and first member 4 a may be joined to high specific gravity member 5. In other words, the golf club head 1 is laminated without a hollow portion in the order of the second member 4b, the first member 4a, and the high specific gravity member 5 from the face surface 2A side in the direction perpendicular to the face surface 2A. You may have the structure. In this case, since the intermediate member 4 made of a material having a specific gravity lower than that of the main body 2 is connected to the main body 2, the moment of inertia of the golf club head 1 can be further increased, and the center of gravity The depth can be further increased.

また、図５を参照して、ゴルフクラブヘッド１において、凹部３は本体部２においてソール部６側からトップエッジ部７側に向かって延びるように形成されており、中間部材４がソール部６側から凹部３の内部に埋め込まれていてもよい。このとき、本体部２は、フェース面２Ａと凹部３との間に位置するフェース側本体部２１と、フェース面２Ａ側から見て凹部３の後方に位置するバック側本体部２２とを含んでいる。   With reference to FIG. 5, in the golf club head 1, the recess 3 is formed so as to extend from the sole portion 6 side toward the top edge portion 7 side in the main body portion 2, and the intermediate member 4 is the sole portion 6. It may be embedded in the recess 3 from the side. At this time, the main body 2 includes a face-side main body 21 positioned between the face surface 2A and the recess 3 and a back-side main body 22 positioned behind the recess 3 when viewed from the face surface 2A side. Yes.

この場合には、重心深度と慣性モーメントの観点よりすると、フェース側本体部２１の厚みが、バック側本体部２２の厚みよりも薄く設けられているのが好ましい。このようなゴルフクラブヘッド１は、フェース面２Ａに垂直な方向において、フェース面２Ａ側から、フェース側本体部２１、第１部材４ａ、第２部材４ｂ、およびバック側本体部２２が中空部分を有さずに積層した４層構成を有している。そのため、上述したゴルフクラブヘッド１と同様に、第２部材４ｂの比重＜第１部材４ａの比重との関係を満たし、かつフェース側本体部２１の比重とバック側本体部２２の比重とを略同一とすることができる。その結果、ゴルフクラブヘッド１の打球感を向上させることができ、かつゴルフクラブヘッド１の慣性モーメントを大きくすることができる。   In this case, from the viewpoint of the center of gravity depth and the moment of inertia, it is preferable that the thickness of the face-side main body 21 is smaller than the thickness of the back-side main body 22. In such a golf club head 1, the face-side main body 21, the first member 4a, the second member 4b, and the back-side main body 22 have hollow portions from the face surface 2A side in the direction perpendicular to the face surface 2A. It has a four-layer structure that is laminated without having. Therefore, similarly to the golf club head 1 described above, the relationship between the specific gravity of the second member 4b <the specific gravity of the first member 4a is satisfied, and the specific gravity of the face-side main body 21 and the specific gravity of the back-side main body 22 are substantially the same. Can be the same. As a result, the feel at impact of the golf club head 1 can be improved and the moment of inertia of the golf club head 1 can be increased.

さらに、図６を参照して、ゴルフクラブヘッド１において、凹部３に代わって本体部２の内部に閉じている閉空間である空孔部８が形成されており、中間部材４とは空孔部８内に埋め込まれていてもよい。この場合にも、重心深度と慣性モーメントの観点よりすると、フェース面２Ａと凹部３との間に位置するフェース側本体部２１の厚みが、フェース面２Ａ側から見て凹部３の後方に位置するバック側本体部２２の厚みよりも薄く設けられているのが好ましい。このようなゴルフクラブヘッド１は、フェース面２Ａに垂直な方向において、フェース面２Ａ側から、フェース側本体部２１、第１部材４ａ、第２部材４ｂ、およびバック側本体部２２が中空部分を有さずに積層した４層構成を有している。そのため、上述したゴルフクラブヘッド１と同様に、第２部材４ｂの比重＜第１部材４ａの比重との関係を満たし、かつフェース側本体部２１とバック側本体部２２の比重を略同一とすることができる。その結果、ゴルフクラブヘッド１の打球感を向上させることができ、かつゴルフクラブヘッド１の慣性モーメントを大きくすることができる。なお、図６に示すゴルフクラブヘッド１は、図５に示すゴルフクラブヘッド１と比べて、ソール部６に対して中間部材４が設けられている位置がトップエッジ部７側に離れているため、本体部２が占める領域の体積がソール部６の近傍では大きくトップエッジ部７の近傍では小さい。そのため、図６に示すゴルフクラブヘッド１の重心位置は図５に示すゴルフクラブヘッド１の重心位置よりもソール部６側に低く配置することができる。   Further, referring to FIG. 6, in the golf club head 1, a hole portion 8, which is a closed space inside the main body portion 2, is formed in place of the recess 3, and the intermediate member 4 is a hole. It may be embedded in the part 8. Also in this case, from the viewpoint of the center of gravity depth and the moment of inertia, the thickness of the face-side main body portion 21 located between the face surface 2A and the concave portion 3 is located behind the concave portion 3 when viewed from the face surface 2A side. It is preferable that the back side main body portion 22 is provided thinner than the thickness. In such a golf club head 1, the face-side main body 21, the first member 4a, the second member 4b, and the back-side main body 22 have hollow portions from the face surface 2A side in the direction perpendicular to the face surface 2A. It has a four-layer structure that is laminated without having. Therefore, similarly to the golf club head 1 described above, the relationship of the specific gravity of the second member 4b <the specific gravity of the first member 4a is satisfied, and the specific gravity of the face-side main body 21 and the back-side main body 22 is substantially the same. be able to. As a result, the feel at impact of the golf club head 1 can be improved and the moment of inertia of the golf club head 1 can be increased. Note that, in the golf club head 1 shown in FIG. 6, the position where the intermediate member 4 is provided with respect to the sole portion 6 is farther toward the top edge portion 7 than the golf club head 1 shown in FIG. 5. The volume of the region occupied by the main body 2 is large near the sole 6 and small near the top edge 7. Therefore, the center of gravity position of the golf club head 1 shown in FIG. 6 can be disposed lower on the sole portion 6 side than the center of gravity position of the golf club head 1 shown in FIG.

図６に示すゴルフクラブヘッド１は、たとえばヒール部１ｈ側またはトゥ部１ｔ側の側面から本体部２に穴を開け、当該穴に中間部材４を挿入した後、当該穴の開口部を別部材によって閉じることにより形成され得る。   The golf club head 1 shown in FIG. 6 has a hole formed in the main body 2 from the side surface on the heel portion 1h side or the toe portion 1t side, for example, and the intermediate member 4 is inserted into the hole. Can be formed by closing.

以上のように本発明の実施の形態について説明を行なったが、上述の実施の形態を様々に変形することも可能である。また、本発明の範囲は上述の実施の形態に限定されるものではない。本発明の範囲は、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更を含むことが意図される。   Although the embodiment of the present invention has been described above, the above-described embodiment can be variously modified. The scope of the present invention is not limited to the above-described embodiment. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

１ ゴルフクラブヘッド、１ｃ 中央部、１ｈ ヒール部、１ｔ トゥ部、２ 本体部、２Ａ フェース面、３ 凹部、３Ａ 底面、３Ｂ 側面、４ 中間部材、４ａ 第１部材、４ｂ 第２部材、５ 高比重部材、６ ソール部、７ トップエッジ部、８ 空孔部、２０ シャフト、２１ フェース側本体部、２２ バック側本体部。   1 golf club head, 1c center portion, 1h heel portion, 1t toe portion, 2 main body portion, 2A face surface, 3 concave portion, 3A bottom surface, 3B side surface, 4 intermediate member, 4a first member, 4b second member, 5 high Specific gravity member, 6 sole part, 7 top edge part, 8 hole part, 20 shaft, 21 face side body part, 22 back side body part.

Claims (10)

フェース面と、前記フェース面の裏側に形成されている凹部とを有する本体部と、
前記凹部内に配置されており、第１部材と第２部材とを含み、前記本体部と比べて比重が小さい中間部材と、
前記中間部材から見て前記本体部の反対側に配置されており、前記中間部材と比べて比重が大きい高比重部材とを備える、ゴルフクラブヘッド。 A main body having a face surface and a recess formed on the back side of the face surface;
An intermediate member that is disposed in the recess, includes a first member and a second member, and has a lower specific gravity than the main body portion,
A golf club head comprising: a high specific gravity member disposed on the opposite side of the main body portion as viewed from the intermediate member and having a specific gravity greater than that of the intermediate member. 前記第１部材は、前記本体部よりも比重が小さく、
前記第２部材は、前記第１部材よりも比重が小さい、請求項１に記載のゴルフクラブヘッド。 The first member has a specific gravity smaller than that of the main body,
The golf club head according to claim 1, wherein the second member has a specific gravity smaller than that of the first member. 前記第１部材は金属材料により構成されており、前記第２部材は樹脂材料により構成されている、請求項２に記載のゴルフクラブヘッド。   The golf club head according to claim 2, wherein the first member is made of a metal material, and the second member is made of a resin material. 前記凹部は、前記フェース面側から見て前記フェース面の打撃位置の少なくとも一部と重なる領域に形成されている、請求項１〜請求項３のいずれか１項に記載のゴルフクラブヘッド。   4. The golf club head according to claim 1, wherein the recess is formed in a region overlapping with at least a part of a hitting position of the face surface when viewed from the face surface side. 5. 前記中間部材において、前記第１部材は前記本体部と接合されており、前記第２部材は前記高比重部材と接合されている、請求項１〜請求項４のいずれか１項に記載のゴルフクラブヘッド。   5. The golf according to claim 1, wherein in the intermediate member, the first member is joined to the main body portion, and the second member is joined to the high specific gravity member. Club head. 前記本体部はシャフト側の端部に位置するヒール部と、前記フェース面に対して前記ヒール部と反対側の端部に位置するトゥ部とを含み、
前記ヒール部から前記トゥ部に向かう方向において、前記第１部材の中央部の厚みが前記第１部材における前記中央部以外の部分の厚みより相対的に厚い、請求項１〜請求項５のいずれか１項に記載のゴルフクラブヘッド。 The main body portion includes a heel portion located at an end portion on a shaft side, and a toe portion located at an end portion opposite to the heel portion with respect to the face surface,
The thickness of the center part of the said 1st member is relatively thicker than the thickness of parts other than the said center part in the said 1st member in the direction which goes to the said toe part from the said heel part. 2. A golf club head according to claim 1. 前記第１部材の前記中央部が前記フェース面の打撃位置の少なくとも一部と重なるように設けられている、請求項６に記載のゴルフクラブヘッド。   The golf club head according to claim 6, wherein the center portion of the first member is provided so as to overlap at least a part of a hitting position of the face surface. 前記第１部材と前記第２部材との間、および前記中間部材と前記高比重部材の間は、それぞれ接着剤を介して接合されている、請求項１〜請求項７のいずれか１項に記載のゴルフクラブヘッド。   The connection between the first member and the second member and between the intermediate member and the high specific gravity member are respectively bonded via an adhesive. The described golf club head. 前記本体部、前記中間部材、および前記高比重部材は、中空部分を有さずに一体として形成されている、請求項１〜請求項８のいずれか１項に記載のゴルフクラブヘッド。   9. The golf club head according to claim 1, wherein the main body portion, the intermediate member, and the high specific gravity member are integrally formed without having a hollow portion. 請求項１〜請求項９のいずれか１項に記載のゴルフクラブヘッドを備えるゴルフクラブ。   A golf club comprising the golf club head according to any one of claims 1 to 9.
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