JP2002058762A - Golf club head - Google Patents
Golf club headInfo
- Publication number
- JP2002058762A JP2002058762A JP2000250018A JP2000250018A JP2002058762A JP 2002058762 A JP2002058762 A JP 2002058762A JP 2000250018 A JP2000250018 A JP 2000250018A JP 2000250018 A JP2000250018 A JP 2000250018A JP 2002058762 A JP2002058762 A JP 2002058762A
- Authority
- JP
- Japan
- Prior art keywords
- head
- thickness
- face member
- golf club
- front surface
- 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、フェース部材とヘ
ッド本体との溶接部の強度を高めうるゴルフクラブヘッ
ドに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club head capable of increasing the strength of a weld between a face member and a head body.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】従来、
例えば図７（Ａ）及びそのＹ−Ｙ線部分断面図である図
７（Ｂ）に示す如く、板状のフェース部材ｂと、前面に
前記フェース部材ｂが閉じる開口部ｄを有しかつクラウ
ン部ｅとソール部ｆとサイド部ｇとを形成したヘッド本
体ｃとを溶接により接合したウッド型のゴルフクラブヘ
ッドａ１が知られている。このヘッドａ１では、ボール
打撃時の衝撃力に耐え得るよう、ヘッド本体ｃにフェー
ス部材ｂの裏面の周縁部を支えるバックアップ部ｈが形
成されている。またフェース部材ｂは、前記開口部ｄの
周縁と溶接される。また溶接箇所となる開口部ｄの周縁
の厚さは、溶接による強度の不均一性を見込み、予めそ
れを見込んで厚さＡを大に設定される。2. Description of the Related Art
For example, as shown in FIG. 7 (A) and FIG. 7 (B) which is a partial cross-sectional view taken along the line YY of FIG. There is known a wood-type golf club head a1 in which a head body c having a portion e, a sole portion f, and a side portion g is joined by welding. In the head a1, a back-up portion h is formed in the head main body c to support the peripheral portion of the back surface of the face member b so as to withstand the impact force at the time of hitting the ball. The face member b is welded to the periphery of the opening d. In addition, the thickness of the peripheral edge of the opening d serving as a welding portion is set to a large thickness A in consideration of unevenness in strength due to welding in advance.
【０００３】ところが、上述の様なヘッドａ１では、前
記バックアップ部ｈや厚さＡが大の開口部ｄの周縁など
によりフェース部材ｂの撓み領域が減じられ、ひいては
反発特性が十分に発揮されず打球の飛距離が低下した
り、特にヘッド体積を大型化した場合にはヘッド重量が
増加し易い等の問題がある。そこで、例えば図８
（Ａ）、（Ｂ）に示すように、フェース部材ｋに、ヘッ
ドの後方に向かって小巾でのびる延長部ｎを形成し、溶
接部ｊをクラウン部ｅ、サイド部ｆ、ソール部ｇにて行
うようにしたヘッドａ２も考えられる。However, in the head a1 as described above, the bending area of the face member b is reduced due to the backup portion h and the periphery of the opening d having a large thickness A, and the rebound characteristics are not sufficiently exhibited. There are problems that the flight distance of the hit ball is reduced, and that the head weight tends to increase particularly when the head volume is increased. Therefore, for example, FIG.
As shown in (A) and (B), the face member k is formed with an extension n extending in a small width toward the rear of the head, and the weld j is formed on the crown e, the side f, and the sole g. It is also conceivable that the head a2 is set to perform the above operation.
【０００４】しかしながら、近年の大型ヘッドでは、特
にクラウン部ｅやサイド部ｆの厚さｔ２が、フェース部
材ｋの厚さｔ１に対して３０〜５０％程度に形成されて
いる。従って、このように厚さが異なる２つの部材、例
えば延長部ｎとクラウン部ｅとを向き合わせて溶接した
場合、その厚さに違いによる熱容量の相違に基づき、熱
容量が相対的に小さいクラウン部ｅ（ヘッド本体ｍ側）
が先に熔け始め、熱容量が相対的に大きいフェース部材
ｋ側が十分に熔け始める前に溶接ビードが両者の間に満
たされてしまい、溶接部で強固な接合が得られず該溶接
部での耐久性が低下するという問題がある。However, in recent large-sized heads, the thickness t2 of the crown portion e and the side portion f is formed to be about 30 to 50% of the thickness t1 of the face member k. Accordingly, when two members having different thicknesses such as the extension portion n and the crown portion e are welded face to face, the crown portion having a relatively small heat capacity is based on the difference in heat capacity due to the difference in thickness. e (head body m side)
The weld bead is filled before the face member k side, which has a relatively large heat capacity, begins to melt sufficiently, and the weld bead is filled between them. There is a problem that the performance is reduced.
【０００５】本発明は、以上のような問題に鑑み案出な
されたもので、フェース部材とヘッド本体とを溶接する
各溶接部の厚さ、巾などを一定範囲に規制することを基
本として、両溶接部の熱容量を近づけることにより溶接
部の接合強度を向上しつつフェース部材の反発特性の低
下をも防止しうるゴルフクラブヘッドを提供することを
目的としている。The present invention has been devised in view of the above problems, and is based on regulating the thickness, width, and the like of each welded portion for welding a face member and a head body to a certain range. It is an object of the present invention to provide a golf club head capable of improving the joint strength of the welded portions by making the heat capacities of both the welded portions close to each other and also preventing the rebound characteristics of the face member from being lowered.
【０００６】[0006]
【課題を解決するための手段】本発明のうち請求項１記
載の発明は、フェース部の少なくとも一部を形成するフ
ェース部材、及び前面に前記フェース部材が閉じる開口
部を有しかつ前記前面から後方にのびるクラウン部とソ
ール部とサイド部とを形成したヘッド本体からなり、か
つ前記フェース部材の裏面の周縁部と、該ヘッド本体の
前記前面とを溶接により接合したゴルフクラブヘッドで
あって、前記ヘッド本体は、前記前面から後方に１〜４
mmを隔てるまでの領域にヘッド内外方向の厚さＴａの厚
肉部を形成し、かつフェース部材は、前記前面と当接す
る領域に前後方向の厚さＴｆの取付部を形成するととも
に、前記厚肉部と前記取付部との厚さの比（Ｔｆ／Ｔ
ａ）を０．５〜２としたことを特徴としている。According to a first aspect of the present invention, there is provided a face member forming at least a part of a face portion, and an opening on the front surface for closing the face member. A golf club head comprising a head body having a crown portion, a sole portion, and a side portion extending rearward, and a peripheral portion of a back surface of the face member and the front surface of the head body joined by welding. The head body is rearward from the front surface by 1 to 4
A thick portion having a thickness Ta in the inward and outward directions of the head is formed in a region up to a distance of mm, and the face member forms a mounting portion having a thickness Tf in the front-rear direction in a region in contact with the front surface. The ratio of the thickness of the wall portion to the thickness of the mounting portion (Tf / T
a) is set to 0.5 to 2.
【０００７】前記厚肉部の厚さＴａは、例えば２．０〜
４．０mmであり、かつ前記フェース部材の前記取付部の
厚さＴｆは、例えば１．５〜３．５mmとすることができ
る。また前記ヘッド本体は、前記厚肉部の後方にヘッド
内外方向の厚さＴｕが前記厚肉部の厚さＴａよりも小の
薄肉部を具えることができる。この薄肉部は、例えばヘ
ッド内外方向の厚さＴｕ１が１．２〜１．６mmの第１の
薄肉部と、この第１の薄肉部の後方に連なりかつ厚さＴ
ｕ２が０．８〜１．２mmの第２の薄肉部とを含むことが
できる。[0007] The thickness Ta of the thick portion is, for example, 2.0 to
4.0 mm, and the thickness Tf of the attachment portion of the face member can be, for example, 1.5 to 3.5 mm. Further, the head main body may include a thin portion in which the thickness Tu in the head inward and outward directions is smaller than the thickness Ta of the thick portion behind the thick portion. The thin portion includes, for example, a first thin portion having a thickness Tu1 of 1.2 to 1.6 mm in the inward and outward directions of the head, a rear portion of the first thin portion, and a thickness T1.
u2 may include a second thin portion of 0.8 to 1.2 mm.
【０００８】また前記第１の薄肉部は、前後方向の長さ
Ｗ２が３〜７mm、かつ前記第２の薄肉部は、前後方向の
長さＷ３が３〜７mmとすることが望ましい。なお薄肉部
は、前記第２の薄肉部の後方に厚さＴｕ３が０．７〜
１．０mmかつ前記第２の薄肉部の厚さＴｕ２よりも小の
第３の薄肉部を形成することができる。The first thin portion preferably has a length W2 in the front-rear direction of 3 to 7 mm, and the second thin portion preferably has a length W3 in the front-rear direction of 3 to 7 mm. The thin portion has a thickness Tu3 of 0.7 to 0.7 behind the second thin portion.
A third thin portion having a thickness of 1.0 mm and smaller than the thickness Tu2 of the second thin portion can be formed.
【０００９】また前記フェース部材及びヘッド本体は、
比重が５．０以下の金属材料からなるとともにヘッド体
積を３００cm3 以上とすることが特に望ましい。[0009] The face member and the head body may include:
It is particularly desirable that the head be made of a metal material having a specific gravity of 5.0 or less and have a head volume of 300 cm 3 or more.
【００１０】[0010]
【発明の実施の形態】以下本発明の実施の一形態を図面
に基づき説明する。図１は本実施形態としてウッド型の
ゴルフクラブヘッド（以下、単に「ヘッド」ということ
がある。）１の分解斜視図、図２は接合したヘッドのＡ
−Ａ線端面図、図３は図２の部分拡大図をそれぞれ示し
ている。図において、ヘッド１は、フェース部材２とヘ
ッド本体３とから構成され、これらを溶接により接合し
て形成されている。また本実施形態のヘッド１は、例え
ばヘッド体積が３００cm3 以上でありかつ内部を中空部
ｉとした大型ヘッドとして形成されている。ヘッド体積
はヘッドの外表面により囲む体積により定められ、シャ
フト取付部（ネック部）などを含むものとする。また中
空部ｉは完全に中空とされる場合の他、発泡樹脂などが
適宜充填されることもある。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a wood-type golf club head (hereinafter, may be simply referred to as a “head”) 1 as an embodiment, and FIG.
-A line end view, FIG. 3 has shown the elements on larger scale of FIG. 2, respectively. In the figure, a head 1 is composed of a face member 2 and a head main body 3 and is formed by joining these by welding. Further, the head 1 of the present embodiment is formed as a large-sized head having, for example, a head volume of 300 cm 3 or more and a hollow portion i inside. The head volume is determined by the volume surrounded by the outer surface of the head, and includes a shaft mounting portion (neck portion) and the like. In addition to the case where the hollow portion i is completely hollow, the hollow portion i may be appropriately filled with a foamed resin or the like.
【００１１】前記フェース部材２は、ボールを打撃する
部分であるフェース部４の少なくとも一部、本例では実
質的にフェース部４の全体部分を形成する板状のものが
例示される。このフェース部材２は、プレスフォーミン
グ、鍛造、鋳造など種々の方法で形成することができ、
本例では圧延材を主として曲げ加工するプレスフォーミ
ングにより形成された塑性加工品からなるものを例示し
ている。このような塑性加工品は、鋳造品に比して材料
選択の幅が広がりかつ材料欠陥が少なく、加工が容易で
ある点で好ましい。The face member 2 is exemplified by a plate-like member which forms at least a part of the face portion 4 which is a portion hitting a ball, in this example, substantially the entire face portion 4. The face member 2 can be formed by various methods such as press forming, forging, and casting.
In the present embodiment, an example of a plastic work product formed by press forming in which a rolled material is mainly bent is illustrated. Such a plastically processed product is preferable in that the range of material selection is broader than that of a cast product, the number of material defects is small, and processing is easy.
【００１２】またフェース部材２には、高い引張強度を
有し、かつ低比重、とりわけ比重が５．０以下の金属材
料を用いるのが好ましい。比重が５．０を超えると、大
型ヘッドとしたときにヘッド重量の増大を招きやすくな
るためである。より具体的には、フェース部材２には、
チタンないしチタン合金を好適に用いうる。チタン合金
には、汎用のＴｉ−６Ａｌ−４Ｖ等に加え、より高強度
なチタン合金として、Ｔｉ−１５Ｖ−３Ｃｒ−３Ａｌ−
３Ｓｎ、Ｔｉ−１０Ｖ−２Ｆｅ−３Ａｌ、Ｔｉ−１５Ｍ
ｏ−５Ｚｒ−３Ａｌ、Ｔｉ−１３Ｖ−１１Ｃｒ−３Ａ
ｌ、Ｔｉ−２２Ｖ−４Ａｌ（ＤＡＴ５１）、Ｔｉ−３Ａ
ｌ−２．５Ｖ、Ｔｉ−４．５Ａｌ−３Ｖ−２Ｍｏ−２Ｆ
ｅ（ＳＰ７００）、Ｔｉ−２０Ｖ−４Ａｌ−１Ｓｎ等を
用いることができる。ただし、これらの金属材料には限
定されない。The face member 2 is preferably made of a metal material having a high tensile strength and a low specific gravity, especially a specific gravity of 5.0 or less. If the specific gravity exceeds 5.0, the head weight tends to increase when a large head is used. More specifically, the face member 2 includes
Titanium or a titanium alloy can be suitably used. In addition to general-purpose Ti-6Al-4V etc., titanium alloys with higher strength include Ti-15V-3Cr-3Al-
3Sn, Ti-10V-2Fe-3Al, Ti-15M
o-5Zr-3Al, Ti-13V-11Cr-3A
1, Ti-22V-4Al (DAT51), Ti-3A
1-2.5V, Ti-4.5Al-3V-2Mo-2F
e (SP700), Ti-20V-4Al-1Sn, or the like can be used. However, it is not limited to these metal materials.
【００１３】またフェース部材２は、本例ではその中央
部、周縁部ともほぼ均一な厚さＴで形成された板状体か
らなるものを例示している。とりわけフェース部材２の
中央部の厚さＴは、例えば１．５〜３．５mm、より好ま
しくは２．０〜２．８mmであるのが望ましい。前記厚さ
Ｔが１．５mm未満の場合、用いる材料にもよるがボール
打撃時の衝撃により、該フェース部材２の割れや凹み等
の損傷が生じやすい傾向があり、逆に３．５mmを超える
場合、フェース部４の反発特性が低下し飛距離を損なう
傾向がある。In this embodiment, the face member 2 is exemplified by a plate-like body having a substantially uniform thickness T at both the center and the periphery. In particular, the thickness T at the center of the face member 2 is desirably, for example, 1.5 to 3.5 mm, and more preferably, 2.0 to 2.8 mm. When the thickness T is less than 1.5 mm, depending on the material used, the impact at the time of hitting the ball tends to cause damage such as cracks or dents of the face member 2, and conversely exceeds 3.5 mm. In this case, the resilience characteristics of the face portion 4 tend to be reduced and the flight distance tends to be impaired.
【００１４】また前記ヘッド本体３は、前面５（フェー
ス部材２側を向く面）に前記フェース部材２が閉じる開
口部６を有しかつ前記前面５から後方にのびるヘッド上
面をなすクラウン部７と、ヘッド底面をなすソール部９
と、ヘッド側面をなすサイド部１０とを具えるととも
に、シャフトが装着されるシャフト取付部１１が例えば
クラウン部７のヒール寄りに一体的に突出形成されてい
る。このようなヘッド本体３は、好ましくはロストワッ
クス精密鋳造により各部を一体で形成されている。ただ
し、該ヘッド本体３は、２以上の部材を用い、これらを
溶接することにより形成することもできる。またヘッド
本体３も、高強度、とりわけ比重が５．０以下の金属材
料を用いるのが好ましく、チタンないしチタン合金（前
述）を用いることが望ましい。なおヘッド本体３とフェ
ース部材２とは同一材料であっても良く、また異なる材
料でも良い。特に好ましくは、両部材にチタン合金を用
いるのが望ましい。The head body 3 has an opening 6 on the front surface 5 (a surface facing the face member 2) for closing the face member 2, and a crown portion 7 forming a head upper surface extending rearward from the front surface 5. , The sole part 9 that forms the bottom of the head
And a side portion 10 forming a side surface of the head, and a shaft mounting portion 11 to which the shaft is mounted is integrally formed, for example, near the heel of the crown portion 7. Such a head main body 3 is preferably formed integrally with each part by lost wax precision casting. However, the head main body 3 can also be formed by using two or more members and welding them. The head body 3 is also preferably made of a metal material having a high strength, particularly a specific gravity of 5.0 or less, and is preferably made of titanium or a titanium alloy (described above). The head body 3 and the face member 2 may be made of the same material or different materials. It is particularly preferable to use a titanium alloy for both members.
【００１５】前記ヘッド本体３は、図３に拡大して示す
如く、前記前面５から後方に１〜４mmを隔てるまでの領
域Ｗ１にヘッド内外方向の厚さＴａの厚肉部１２を形成
している。この厚肉部１２の厚さＴａは、例えば２．０
〜４．０mm、より好ましくは２．５〜３．５mmとするの
が望ましい。他方、前記フェース部材２は、このヘッド
本体３の前面５と当接する領域に前後方向の厚さＴｆの
取付部２ａを形成する。この取付部２ａの厚さＴｆは、
本例ではフェース部材２の中央部の厚さＴと略等しく設
定されており、１．５〜３．５mm、より好ましくは２．
０〜２．８mmの範囲で定めるのが特に望ましい。なおフ
ェース部材２は、この取付部２ａの厚さＴｆと前記中央
部の厚さＴとを違えることもできる。The head body 3 is formed by forming a thick portion 12 having a thickness Ta in the inward and outward directions of the head in an area W1 from the front surface 5 to a distance of 1 to 4 mm rearward as shown in FIG. I have. The thickness Ta of the thick portion 12 is, for example, 2.0
It is desirable to set it to 4.0 mm, more preferably 2.5 to 3.5 mm. On the other hand, the face member 2 forms a mounting portion 2a having a thickness Tf in the front-rear direction in a region where the face member 2 comes into contact with the front surface 5 of the head main body 3. The thickness Tf of the mounting portion 2a is
In the present example, the thickness is set to be substantially equal to the thickness T of the central portion of the face member 2, and is 1.5 to 3.5 mm, more preferably 2.
It is particularly desirable to set the distance in the range of 0 to 2.8 mm. In the face member 2, the thickness Tf of the mounting portion 2a may be different from the thickness T of the central portion.
【００１６】そして本実施形態のヘッド１は、前記厚肉
部１２の厚さＴａと前記取付部２ａとの厚さＴｆの比
（Ｔｆ／Ｔａ）を０．５〜２に限定したことを特徴事項
の一つとしている。フェース部材２とヘッド本体３と
は、図４（Ａ）に示すように、前記フェース部材２の裏
面２Ｂ（ボールを打球する面とは反対側の面）の周縁部
と、ヘッド本体３の前記前面５とを溶接により接合しヘ
ッド１として形成される。従って、溶接箇所がフェース
部４の外部となる。この際、上述のようにヘッド本体３
の厚肉部１２とフェース部材２の取付部２ａとの各厚さ
の比（Ｔｆ／Ｔａ）を一定範囲に限定することにより、
溶接箇所となる厚肉部１２と取付部２ａとの熱容量をほ
ぼ近似させることができる。The head 1 of this embodiment is characterized in that the ratio (Tf / Ta) of the thickness Ta of the thick portion 12 to the thickness Tf of the mounting portion 2a is limited to 0.5 to 2. It is one of the matters. The face member 2 and the head body 3 are, as shown in FIG. 4A, a peripheral portion of the back surface 2B of the face member 2 (the surface opposite to the surface on which the ball is hit) and the head body 3 The head 1 is formed by joining the front surface 5 by welding. Therefore, the welding location is outside the face portion 4. At this time, as described above, the head body 3
By limiting the ratio (Tf / Ta) of each thickness of the thick portion 12 to the mounting portion 2a of the face member 2 to a certain range,
The heat capacity between the thick portion 12 serving as a welding portion and the mounting portion 2a can be approximately approximated.
【００１７】すなわち、図４（Ｂ）に示すように、フェ
ース部材２と、ヘッド本体３とを溶接する際には、両部
材間に熱源から溶接入熱が与えられ、この溶接入熱はフ
ェース部材２、ヘッド本体３へそれぞれ熱伝導する。こ
の際、厚肉部１２の長さＷ１やフェース部材２の取付部
２ａの厚さＴｆとヘッド本体３の厚肉部１２の厚さＴａ
との比を前記の如く限定し互いの熱容量を揃えること
で、厚肉部１２、取付部２ａの双方をほぼ同時に熔かし
始め、かつ図４（Ｃ）の如く、両部材の溶融部分２０に
跨って溶接ビード１６を満たすことができる。これによ
りフェース部材２とヘッド本体３との強固な溶接部が得
られる。That is, as shown in FIG. 4 (B), when the face member 2 and the head main body 3 are welded, heat input is applied between the two members from a heat source, and the welding heat input is applied to the face. Heat is conducted to the member 2 and the head body 3 respectively. At this time, the length W1 of the thick portion 12, the thickness Tf of the attachment portion 2a of the face member 2, and the thickness Ta of the thick portion 12 of the head body 3 are set.
As described above, the thick portion 12 and the mounting portion 2a both begin to be melted almost simultaneously, and as shown in FIG. To fill the weld bead 16. Thereby, a strong weld between the face member 2 and the head body 3 is obtained.
【００１８】ここで、前記比（Ｔｆ／Ｔａ）が０．５未
満又は２よりも大の場合、フェース部材２とヘッド本体
３との前記厚さＴｆ、Ｔａの差が大きくなり、溶接時の
熱容量が大きく異なるため同時に均一な熔解が得られ難
くひいては溶接部の強度が低下し易い。このような観点
より、特に好ましくは前記比（Ｔｆ／Ｔａ）を０．４〜
１．８、さらに好ましくは０．６〜１．２とすることが
望ましい。Here, if the ratio (Tf / Ta) is less than 0.5 or greater than 2, the difference between the thicknesses Tf and Ta between the face member 2 and the head body 3 becomes large, and the difference in the thickness at the time of welding is increased. Since the heat capacities are greatly different, it is difficult to obtain uniform melting at the same time, and the strength of the welded portion is apt to decrease. From such a viewpoint, the ratio (Tf / Ta) is particularly preferably 0.4 to 0.4.
It is desirably 1.8, more preferably 0.6 to 1.2.
【００１９】また前記厚肉部１２は、その領域のヘッド
前後方向の長さＷ１が、１mm未満であると、前記熱容量
を揃える効果が低下しがちとなり、逆に４mmを超える
と、フェース部材２に対する熱容量が大きくなる他、フ
ェース部４の有効撓み領域を減じるとともに、大型ヘッ
ドとした場合にはヘッド重量の増加を招きやすい傾向が
ある。このような観点より、前記厚肉部１２が形成され
る領域の長さＷ１は、より好ましくは２〜４mm、さらに
好ましくは２〜３mmとすることが望ましい。If the length W1 of the thick portion 12 in the front-rear direction of the head is less than 1 mm, the effect of equalizing the heat capacity tends to decrease. In addition to increasing the heat capacity, the effective bending area of the face portion 4 is reduced, and the head weight tends to increase when a large head is used. From such a viewpoint, the length W1 of the region where the thick portion 12 is formed is more preferably 2 to 4 mm, and further preferably 2 to 3 mm.
【００２０】上述のような厚肉部１２は、前記ヘッド本
体３の前面５の少なくとも一部に形成されていれば良い
が、より好ましくは厚肉部１２は前記前面５の開口部６
に沿った長さが前記前面５の全長さの５０％以上、より
好ましくは７０％以上、さらに好ましくは１００％（す
なわち、クラウン部７、ソール部９及びサイド部１０の
全周）で形成されることにより、さらに高い溶接部の接
合強度が得られる。The thick portion 12 as described above may be formed on at least a part of the front surface 5 of the head main body 3. More preferably, the thick portion 12 is formed in the opening 6 of the front surface 5.
Is formed so as to be 50% or more, more preferably 70% or more, and even more preferably 100% of the entire length of the front surface 5 (ie, the entire circumference of the crown portion 7, the sole portion 9 and the side portions 10). Thereby, higher joining strength of the welded portion can be obtained.
【００２１】また本実施形態のヘッド１は、フェース部
材２とヘッド本体３との溶接に際して、例えば図４
（Ａ）、（Ｂ）に示したように、前記フェース部材２の
周縁部２ｅと、前記ヘッド本体３の前面５の外周縁との
少なくとも一方に、溶接用のぬすみ部Ｘを形成したもの
を例示している。本例ではフェース部材２の前記裏面２
Ｂの周縁部２ｅを面取り状に切り欠くことでぬすみ部Ｘ
を形成したものを例示するが、ヘッド本体３側に形成し
ても良く、また両部材に形成することもできる。このよ
うなぬすみ部Ｘを設けることにより、溶接ビード１６を
安定して両部材間に満たしていくことができ、溶接部の
接合強度を高めるのに役立つ他、溶接作業時の施工性を
能率化しうる点で好ましい。なお盛られた溶接ビード１
６は、研磨工程によって他の部分と面一になるよう研磨
仕上げされる。The head 1 according to the present embodiment, when the face member 2 and the head main body 3 are welded, for example, as shown in FIG.
As shown in (A) and (B), a structure in which a sunk portion X for welding is formed on at least one of a peripheral edge 2 e of the face member 2 and an outer peripheral edge of the front surface 5 of the head main body 3. An example is shown. In this example, the back surface 2 of the face member 2
By cutting the peripheral edge 2e of B in a chamfered shape,
Is formed, but it may be formed on the head body 3 side, or may be formed on both members. By providing such a slack portion X, the weld bead 16 can be stably filled between the two members, which helps to increase the joining strength of the welded portion and also improves the workability during welding work. It is preferable in that it is possible. Welded beads 1
6 is polished by a polishing process so as to be flush with other portions.
【００２２】また本実施形態の前記ヘッド本体３は、図
３に示したように、前記厚肉部１２の後方にヘッド内外
方向の厚さが前記厚肉部１２の厚さＴａよりも小の薄肉
部１３を具えたものを例示している。本例の薄肉部１３
は、例えばヘッド内外方向の厚さＴｕ１が１．２〜１．
６mmの第１の薄肉部１４と、この第１の薄肉部１４の後
方に連なりかつ厚さＴｕ２が０．８〜１．２mmの第２の
薄肉部１５とを含んで構成されたものを例示する。前記
第１の薄肉部１４は、前後方向の長さＷ２が３〜７mm、
より好ましくは４〜６mmで形成することが望ましい。前
記長さＷ２が３mm未満であると、厚肉部１２から第２の
薄肉部１５までの間で厚さの変化を急激とする傾向があ
り、逆に７mmを超えるとヘッドの重量増加を招きやすく
大型ヘッドには適さない傾向がある。As shown in FIG. 3, the head main body 3 of the present embodiment has a thickness in the head inward and outward directions behind the thick portion 12 smaller than the thickness Ta of the thick portion 12. An example having a thin portion 13 is illustrated. Thin portion 13 of this example
Has a thickness Tu1 in the head inward / outward direction of 1.2 to 1..
For example, the first thin portion 14 having a thickness of 6 mm and the second thin portion 15 having a thickness Tu2 of 0.8 to 1.2 mm connected to the rear of the first thin portion 14 are exemplified. I do. The first thin portion 14 has a length W2 in the front-rear direction of 3 to 7 mm,
More preferably, it is desirable to form it with 4 to 6 mm. If the length W2 is less than 3 mm, the change in thickness from the thick portion 12 to the second thin portion 15 tends to be sharp, and if it exceeds 7 mm, the weight of the head increases. Tends to be unsuitable for large heads.
【００２３】また本例では前記第２の薄肉部１５が前記
クラウン部７、ソール部９及びサイド部１０の主要部分
をそれぞれ形成しており、ヘッド重量の低減に役立たせ
ている。なお第２の薄肉部１５は、必ずしも前記クラウ
ン部７、ソール部９及びサイド部１０の全てを形成する
必要はなく、少なくとも一の部分を形成していれば足り
る。In this embodiment, the second thin portion 15 forms the main portions of the crown portion 7, the sole portion 9 and the side portion 10, respectively, which helps to reduce the head weight. Note that the second thin portion 15 does not necessarily need to form all of the crown portion 7, the sole portion 9, and the side portion 10, and it is sufficient that at least one portion is formed.
【００２４】このように、厚肉部１２のヘッド後方に第
１、第２の薄肉部１４、１５を形成することにより、ヘ
ッド本体３の厚さがヘッド後方に向かって徐々に減じら
れるため、ヘッド本体３の急激な厚さの変化を防止しう
る。これは剛性段差を減じ応力集中などを効果的に抑制
し、かつヘッド重量の過度の増大を招くことなく耐久性
を向上するのに役立つ。なお本例では、厚肉部１２、薄
肉部１３は、ステップ状に厚さが変化するものを例示し
たが、このような態様に限定されるものではない。例え
ば図５に示すように、厚肉部１２は略一定の前記厚さＴ
ａとし、薄肉部１３については滑らかに厚さを減じなが
らヘッドの後方にのびる如く形成することもできる。By forming the first and second thin portions 14 and 15 behind the head of the thick portion 12, the thickness of the head body 3 is gradually reduced toward the rear of the head. A sudden change in the thickness of the head body 3 can be prevented. This is useful for reducing the rigidity step, effectively suppressing stress concentration and the like, and improving durability without causing an excessive increase in head weight. In the present example, the thick portion 12 and the thin portion 13 have been described as having a thickness that changes stepwise, but the present invention is not limited to such an embodiment. For example, as shown in FIG. 5, the thick portion 12 has a substantially constant thickness T.
The thin portion 13 may be formed so as to extend to the rear of the head while smoothly reducing the thickness.
【００２５】図６には本発明の他の実施形態を示してい
る。本実施形態では、ヘッド本体３は、厚肉部１２の後
方に、薄肉部１３として、第１の薄肉部１４、第２の薄
肉部１５及び第３の薄肉部１６を順次具えたものが例示
される。この場合、第１の薄肉部１４は、ヘッド内外方
向の厚さＴｕ１が１．２〜１．６mmかつ前後方向の長さ
Ｗ２が３〜７mm、またこの第１の薄肉部１４の後方に連
なる第２の薄肉部１５の厚さＴｕ２は０．８〜１．２m
m、より好ましくは１．０〜１．２mmかつ前後方向の長
さＷ３が３〜７mmとし、さらに第３の薄肉部の厚さＴｕ
３は０．７〜１．０mmとするのが望ましい。FIG. 6 shows another embodiment of the present invention. In the present embodiment, the head body 3 is provided with a first thin portion 14, a second thin portion 15, and a third thin portion 16 as a thin portion 13 in the rear of the thick portion 12 in order. Is done. In this case, the first thin portion 14 has a thickness Tu1 in the head inside and outside direction of 1.2 to 1.6 mm, a length W2 in the front-rear direction of 3 to 7 mm, and is connected to the rear of the first thin portion 14. The thickness Tu2 of the second thin portion 15 is 0.8 to 1.2 m
m, more preferably 1.0 to 1.2 mm and the length W3 in the front-rear direction is 3 to 7 mm, and the thickness Tu of the third thin portion is further
3 is desirably 0.7 to 1.0 mm.
【００２６】この形態では、ヘッド１をより大型化し、
またフェース部材２の周辺部をより相対的に厚くし、ヘ
ッド１の中央部をより薄く形成することにより、ヘッド
１の慣性モーメントの向上と強度の向上とを両立してい
る。また前記厚肉部１２の厚さＴａ、長さＷ１、前記薄
肉部１３の厚さＴｕ１、Ｔｕ２又はＴｕ３、巾Ｗ２、Ｗ
３、さらにはクラウン部７、ソール部９及びサイド部１
０の各厚さなどは各位置において違えることにより、ヘ
ッド１の重量配分設計を自在に行うことができる。In this embodiment, the size of the head 1 is increased,
Further, the peripheral portion of the face member 2 is made relatively thicker, and the central portion of the head 1 is made thinner, so that both the improvement of the moment of inertia and the improvement of the strength of the head 1 are achieved. Further, the thickness Ta of the thick portion 12, the length W1, the thickness Tu1, Tu2 or Tu3 of the thin portion 13, the width W2, W
3. Further, the crown 7, the sole 9, and the side 1
The weight distribution of the head 1 can be freely designed by making each thickness of 0 different at each position.
【００２７】例えばソール部９に形成される厚肉部１２
の厚さや長さを、クラウン部７側に形成される厚肉部１
２のそれらよりも大とすることなどにより、ソール部９
側により多くの重量を配することができる。この場合、
ヘッド１の重心位置をより低くすることが可能になり、
ひいてはボールが上がりやすいヘッド１を提供しうる。
またサイド部１０のトウ側の厚肉部１２とヒール側の厚
肉部１２とで厚さ、長さなどを違えることにより、ヘッ
ドの重心位置をトウ側寄り又はヒール側寄りに設置する
ことも可能になる。For example, the thick portion 12 formed on the sole portion 9
The thickness and length of the thick portion 1 formed on the crown portion 7 side
By making the sole part 9 larger than those of
More weight can be placed on the side. in this case,
It is possible to lower the center of gravity of the head 1,
Consequently, it is possible to provide the head 1 in which the ball easily rises.
In addition, by changing the thickness, length, and the like of the thick portion 12 on the toe side and the thick portion 12 on the heel side of the side portion 10, the center of gravity of the head may be located closer to the toe side or closer to the heel side. Will be possible.
【００２８】[0028]
【実施例】表１に示す仕様によりヘッド体積が３２０cm
3 で実質的に同一外形を有するウッド型ゴルフクラブヘ
ッドを試作するとともに、各ヘッドの反発係数、慣性モ
ーメント、耐久性をテストした。EXAMPLE The head volume was 320 cm according to the specifications shown in Table 1.
In Example 3 , wood-type golf club heads having substantially the same outer shape were prototyped, and the coefficient of restitution, moment of inertia, and durability of each head were tested.
【００２９】またフェース部の反発特性は、Ｕ．Ｓ．
Ｇ．Ａ．の Procedure for Measureing the Velocity R
atio of a Club Head for Conformance to Rule 4-1e,
Revision 2 (February 8, 1999) に基づき行った。具体
的にはゴフボールをボール発射装置を用いて発射し、台
座上に固着することなく載置されたヘッドのフェース部
のスイートスポットに衝突させ、ゴルフボールの衝突直
前の入射速度Ｖｉと跳ね返り速度Ｖｏとを測定する。そ
して、ゴルフボールの入射速度をＶｉ、跳ね返り速度を
Ｖｏ、ヘッド質量をＭ、ゴルフボールの平均質量をｍと
した場合に、次式により反発係数ｅを算定した。 （Ｖｏ／Ｖｉ）＝（ｅＭ−ｍ）／（Ｍ＋ｍ） なおゴルフボールの発射口からフェース部までの距離は
５５インチとし、ボールがヘッドのスイートスポットの
位置から５mm以上離れない位置でかつフェース面に対し
て直角に衝突させる。またゴルフボールはタイトリスト
社製のピナクルゴールドを使用し、ボール初速は１６０
フィート±０．５フィート（４８．７６８±０．１５２
４ｍ／ｓ）に設定する。そして、比較例３の反発係数ｅ
を１００とする指数で評価した。数値が大きい程良好で
ある。The rebound characteristics of the face portion are described in U.S. Pat. S.
G. FIG. A. No Procedure for Measureing the Velocity R
atio of a Club Head for Conformance to Rule 4-1e,
Based on Revision 2 (February 8, 1999). Specifically, a Goff ball is fired using a ball firing device, and collides with a sweet spot on the face portion of the head placed without being fixed on the pedestal, and the incident speed Vi and the rebound speed Vo immediately before the collision of the golf ball. And measure. Then, when the incident speed of the golf ball was Vi, the rebound speed was Vo, the head mass was M, and the average mass of the golf ball was m, the restitution coefficient e was calculated by the following equation. (Vo / Vi) = (eM-m) / (M + m) The distance from the launch port of the golf ball to the face is 55 inches, and the ball is at a position not more than 5 mm away from the sweet spot position of the head and the face surface. Collision at right angles to. The golf ball uses Pinnacle Gold made by Titleist, and the ball's initial speed is 160
Feet ± 0.5 feet (48.768 ± 0.152
4 m / s). Then, the coefficient of restitution e of Comparative Example 3
Was evaluated with an index of 100. The higher the value, the better.
【００３０】また、ヘッドの慣性モーメントは、ヘッド
を規定のライ角、ロフト角として水平面に載置した基準
状態において、ヘッドの重心を通る垂直軸回り及び水平
軸回りのそれぞれの慣性モーメントをINERTIA DYNAMICS
Inc社製のMOMENT OF INERTIA MEASURING INSTRUMENTの
MODEL NO.005-002を用いて測定した値である。この慣
性モーメントが大きいほど、ミスショット時においてヘ
ッドのぶれ量が少なくなり飛距離のロスを抑制しうる。The moment of inertia of the head is defined as the INERTIA DYNAMICS when the head is mounted on a horizontal plane as a prescribed lie angle and loft angle, around a vertical axis and a horizontal axis passing through the center of gravity of the head.
Inc.'s MOMENT OF INERTIA MEASURING INSTRUMENT
It is the value measured using MODEL NO.005-002. The greater the moment of inertia, the smaller the amount of head shake during a missed shot, which can reduce flying distance loss.
【００３１】さらに、耐久性は、２ピースタイプのゴル
フボールをエアーキャノン式発射機を用いて発射し、固
定されたヘッドのフェース部に衝突させ、溶接箇所にひ
び割れ等の損傷が発生した個数を調べた（ｎ＝３０）。
テスト結果などを表１に示す。Further, the durability is measured by firing a two-piece type golf ball using an air cannon type launcher and colliding against a face portion of a fixed head, thereby generating damage such as cracks at a welded portion. (N = 30).
Table 1 shows the test results and the like.
【００３２】[0032]
【表１】 [Table 1]
【００３３】テストの結果、実施例のヘッドは、溶接部
の耐久性を向上しており、またスイートスポット高さを
低くかつ重心深度を大きく設計しうることが確認でき
た。また慣性モーメントも、比較例に比べて大きく設計
しうることが確認できた。As a result of the test, it was confirmed that the head of the example can improve the durability of the welded portion, and can be designed to have a low sweet spot height and a large depth of the center of gravity. It was also confirmed that the moment of inertia can be designed to be larger than that of the comparative example.
【００３４】[0034]
【発明の効果】上述したように、請求項１記載の発明で
は、ヘッド本体の厚肉部の長さや、その厚さＴａとフェ
ース部材の取付部との厚さＴｆの比（Ｔｆ／Ｔａ）など
を一定範囲に限定することにより、溶接箇所となる厚肉
部と取付部との熱容量をほぼ近似させることができ、こ
れにより、溶接時には厚肉部、取付部の双方をほぼ同時
に熔かし始め、かつその上に溶接ビードを満たすことが
可能となるため、フェース部材とヘッド本体との溶接部
の接合強度を向上することができる。またフェース部材
とヘッド本体との溶接が、フェース部材の裏面の周縁部
と、ヘッド本体の前面とで行われるため、フェース部材
の有効撓み領域を減じることが防止され、ヘッドの反発
特性を向上しうる。As described above, according to the first aspect of the present invention, the length of the thick portion of the head main body and the ratio (Tf / Ta) of the thickness Ta to the thickness Tf of the mounting portion of the face member. By restricting the thickness to a certain range, the heat capacity of the thick portion to be welded and the mounting portion can be approximately approximated, thereby melting both the thick portion and the mounting portion almost simultaneously during welding. Since it is possible to start and fill the weld bead thereon, the joining strength of the welded portion between the face member and the head main body can be improved. Further, since the welding between the face member and the head body is performed at the peripheral portion of the back surface of the face member and the front surface of the head body, it is possible to prevent the effective bending area of the face member from being reduced, and to improve the rebound characteristics of the head. sell.
【００３５】また、請求項２記載の発明のように、厚肉
部の厚さＴａや前記フェース部材の取付部の厚さＴｆを
一定の厚さに限定したときには、より確実に厚肉部と取
付部との熱容量をほぼ近似させることができ、強固な溶
接をなしうる。Further, when the thickness Ta of the thick portion and the thickness Tf of the mounting portion of the face member are limited to a certain thickness as in the second aspect of the present invention, the thick portion is more reliably formed. The heat capacity with the mounting portion can be approximately approximated, and strong welding can be achieved.
【００３６】また、請求項３記載の発明のように、ヘッ
ド本体は、前記厚肉部の後方にヘッド内外方向の厚さが
前記厚肉部の厚さよりも小の薄肉部を具えることによ
り、厚肉部によるヘッド重量の増大を抑制しヘッド重量
の軽量化に役立つほか、ヘッドのフェース部材の周囲に
より多くの重量を配することで慣性モーメントを増大し
うる。According to a third aspect of the present invention, the head body includes a thin portion having a thickness in the head inward and outward directions smaller than the thickness of the thick portion behind the thick portion. In addition to suppressing the increase in the head weight due to the thick portion, which contributes to the reduction of the head weight, the moment of inertia can be increased by disposing more weight around the face member of the head.
【００３７】また請求項４ないし６記載の発明のよう
に、薄肉部は、ヘッド内外方向の厚さＴｕ１が１．２〜
１．６mmの第１の薄肉部と、この第１の薄肉部の後方に
連なりかつ厚さＴｕ２が０．８〜１．２mmの第２の薄肉
部とを含むことにより、厚肉部からヘッド後方に厚さを
徐々に減じることができる。これにより、急激な厚さの
変化を防止してヘッドの耐久性を向上しうる。Further, the thin portion has a thickness Tu1 in the inner and outer directions of the head of 1.2 to 1.2.
By including a first thin portion of 1.6 mm and a second thin portion connected to the rear of the first thin portion and having a thickness Tu2 of 0.8 to 1.2 mm, the head from the thick portion is reduced. The thickness can be gradually reduced backward. This can prevent a sudden change in thickness and improve the durability of the head.
【図１】本実施形態のヘッドの分解斜視図である。FIG. 1 is an exploded perspective view of a head according to an embodiment.
【図２】そのＡ−Ａ線端面図である。FIG. 2 is an end view of the AA line.
【図３】その部分拡大図である。FIG. 3 is a partially enlarged view of FIG.
【図４】（Ａ）〜（Ｃ）は、フェース部材とヘッド本体
との溶接を説明する拡大端面図である。FIGS. 4A to 4C are enlarged end views illustrating welding of the face member and the head body.
【図５】薄肉部の他の形態を示す拡大端面図である。FIG. 5 is an enlarged end view showing another form of the thin portion.
【図６】ヘッド本体の他の形態を示す拡大端面図であ
る。FIG. 6 is an enlarged end view showing another embodiment of the head body.
【図７】（Ａ）は従来のヘッドの分解斜視図、（Ｂ）は
その部分断面図である。FIG. 7A is an exploded perspective view of a conventional head, and FIG. 7B is a partial sectional view thereof.
【図８】（Ａ）は従来のヘッドの分解斜視図、（Ｂ）は
その部分断面図である。8A is an exploded perspective view of a conventional head, and FIG. 8B is a partial cross-sectional view thereof.
１ ヘッド ２ フェース部材 ３ ヘッド本体 ４ フェース部 ５ ヘッド本体の前面 ６ 開口部 ７ クラウン部 ９ ソール部 １０ サイド部 １２ 厚肉部 １３ 薄肉部 １４ 第１の薄肉部 １５ 第２の薄肉部 １６ 第３の薄肉部 DESCRIPTION OF SYMBOLS 1 Head 2 Face member 3 Head main body 4 Face part 5 Front face of head main body 6 Opening part 7 Crown part 9 Sole part 10 Side part 12 Thick part 13 Thin part 14 First thin part 15 Second thin part 16 Third Thin part of
Claims (7)
ェース部材、 及び前面に前記フェース部材が閉じる開口部を有しかつ
前記前面から後方にのびるクラウン部とソール部とサイ
ド部とを形成したヘッド本体からなり、 かつ前記フェース部材の裏面の周縁部と、該ヘッド本体
の前記前面とを溶接により接合したゴルフクラブヘッド
であって、 前記ヘッド本体は、前記前面から後方に１〜４mmを隔て
るまでの領域Ｗ１にヘッド内外方向の厚さＴａの厚肉部
を形成し、 かつフェース部材は、前記前面と当接する領域に前後方
向の厚さＴｆの取付部を形成するとともに、 前記厚肉部と前記取付部との厚さの比（Ｔｆ／Ｔａ）を
０．５〜２としたことを特徴とするゴルフクラブヘッ
ド。1. A head having a face member forming at least a part of a face portion, and a head having an opening in the front surface for closing the face member and forming a crown portion, a sole portion, and a side portion extending rearward from the front surface. A golf club head comprising a main body, and a peripheral portion of a back surface of the face member and the front surface of the head body joined by welding, wherein the head body is separated from the front surface by 1 to 4 mm rearward. A thick portion having a thickness Ta in the head inward and outward directions is formed in a region W1 of the head, and the face member forms a mounting portion having a thickness Tf in the front-rear direction in a region in contact with the front surface. A golf club head having a thickness ratio (Tf / Ta) of 0.5 to 2 with respect to the mounting portion.
mmであり、かつ前記フェース部材の前記取付部の厚さＴ
ｆが１．５〜３．５mmであることを特徴とする請求項１
記載のゴルフクラブヘッド。2. The thickness Ta of the thick portion is 2.0 to 4.0.
mm, and the thickness T of the mounting portion of the face member.
2. The method according to claim 1, wherein f is 1.5 to 3.5 mm.
The golf club head as described.
ッド内外方向の厚さＴｕが前記厚肉部の厚さＴａよりも
小の薄肉部を具えることを特徴とする請求項１又は２記
載のゴルフクラブヘッド。3. The head body according to claim 1, further comprising a thin portion having a thickness Tu in the inward and outward directions of the head smaller than the thickness Ta of the thick portion, behind the thick portion. Or the golf club head according to 2.
１が１．２〜１．６mmの第１の薄肉部と、この第１の薄
肉部の後方に連なりかつ厚さＴｕ２が０．８〜１．２mm
の第２の薄肉部とを含むことを特徴とする請求項１又は
２記載のゴルフクラブヘッド。4. The thin portion has a thickness Tu in the inward and outward directions of the head.
1 is a first thin portion having a thickness of 1.2 to 1.6 mm, and a rear portion of the first thin portion and a thickness Tu2 is 0.8 to 1.2 mm.
3. The golf club head according to claim 1, further comprising a second thin portion.
が３〜７mm、かつ前記第２の薄肉部は、前後方向の長さ
Ｗ３が３〜７mmであることを特徴とする請求項４記載の
ゴルフクラブヘッド。5. The first thin portion has a length W2 in the front-rear direction.
5. The golf club head according to claim 4, wherein a length W3 of the second thin portion in the front-rear direction is 3 to 7 mm. 6.
厚さＴｕ３が０．７〜１．０mmかつ前記第２の薄肉部の
厚さＴｕ２よりも小の第３の薄肉部を具えることを特徴
とする請求項４又は５記載のゴルフクラブヘッド。6. The third thin portion having a thickness Tu3 of 0.7 to 1.0 mm behind the second thin portion and smaller than the thickness Tu2 of the second thin portion. The golf club head according to claim 4, further comprising:
が５．０以下の金属材料からなるとともにヘッド体積を
３００cm3 以上としたことを特徴とする請求項１乃至６
のいずれかに記載のゴルフクラブヘッド。7. The head member according to claim 1, wherein the face member and the head body are made of a metal material having a specific gravity of 5.0 or less and a head volume is set to 300 cm 3 or more.
The golf club head according to any one of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000250018A JP4608060B2 (en) | 2000-08-21 | 2000-08-21 | Golf club head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000250018A JP4608060B2 (en) | 2000-08-21 | 2000-08-21 | Golf club head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002058762A true JP2002058762A (en) | 2002-02-26 |
| JP4608060B2 JP4608060B2 (en) | 2011-01-05 |
Family
ID=18739668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000250018A Expired - Fee Related JP4608060B2 (en) | 2000-08-21 | 2000-08-21 | Golf club head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4608060B2 (en) |
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| JP2005279160A (en) * | 2004-03-31 | 2005-10-13 | Yokohama Rubber Co Ltd:The | Golf club head, and manufacturing method therefor |
| JP2007151758A (en) * | 2005-12-02 | 2007-06-21 | Bridgestone Sports Co Ltd | Golf club head |
| US7367900B2 (en) | 2003-05-30 | 2008-05-06 | Sri Sports Limited | Golf club head |
| JP2010029379A (en) * | 2008-07-28 | 2010-02-12 | Sri Sports Ltd | Wood-type golf club head |
| US7682264B2 (en) * | 2007-10-05 | 2010-03-23 | Advanced International Multitech Co., Ltd | Golf club head structure |
| US7762909B2 (en) * | 2006-06-07 | 2010-07-27 | Sri Sports Limited | Hollow metal golf club head and method for manufacturing the same |
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| JP2017536156A (en) * | 2014-10-24 | 2017-12-07 | カーステン マニュファクチュアリング コーポレーション | Golf club head having energy storage characteristics |
| JP7397038B2 (en) | 2014-10-24 | 2023-12-12 | カーステン マニュファクチュアリング コーポレーション | Golf club head with energy storage properties |
| JP7397159B2 (en) | 2014-10-24 | 2023-12-12 | カーステン マニュファクチュアリング コーポレーション | Golf club head with energy storage properties |
| US11697051B2 (en) | 2014-10-24 | 2023-07-11 | Karsten Manufacturing Corporation | Golf club heads with energy storage features |
| JP7059333B2 (en) | 2014-10-24 | 2022-04-25 | カーステン マニュファクチュアリング コーポレーション | Golf club head with energy storage characteristics |
| JP2022000238A (en) * | 2014-10-24 | 2022-01-04 | カーステン マニュファクチュアリング コーポレーション | Golf club head with energy storage characteristics |
| GB2546679B (en) * | 2014-10-24 | 2021-02-17 | Karsten Mfg Corp | Golf club heads with energy storage characteristics |
| JP2021020082A (en) * | 2014-10-24 | 2021-02-18 | カーステン マニュファクチュアリング コーポレーション | Golf club heads with energy storage features |
| GB2587309A (en) * | 2014-10-24 | 2021-03-24 | Karsten Mfg Corp | Golf club heads with energy storage characteristics |
| GB2587309B (en) * | 2014-10-24 | 2021-09-01 | Karsten Mfg Corp | Golf club heads with energy storage characteristics |
| JP2020142105A (en) * | 2015-01-23 | 2020-09-10 | カーステン マニュファクチュアリング コーポレーション | Golf club head with chamfer and related methods |
| JP2022141863A (en) * | 2015-01-23 | 2022-09-29 | カーステン マニュファクチュアリング コーポレーション | Golf club head with chamfer and related methods |
| KR20170105608A (en) * | 2015-01-23 | 2017-09-19 | 카스턴 매뉴팩츄어링 코오포레이숀 | Golf club head with chamfer and related method |
| JP2018503449A (en) * | 2015-01-23 | 2018-02-08 | カーステン マニュファクチュアリング コーポレーション | Golf club head having chamfer and related method |
| KR102618408B1 (en) * | 2015-01-23 | 2023-12-26 | 카스턴 매뉴팩츄어링 코오포레이숀 | Golf club heads with chamfers and related methods |
| US20170182379A1 (en) * | 2015-12-26 | 2017-06-29 | Dunlop Sports Co. Ltd. | Golf club head |
| US10155138B2 (en) * | 2015-12-26 | 2018-12-18 | Sumitomo Rubber Industries, Ltd. | Golf club head |
| US10471311B2 (en) * | 2017-07-11 | 2019-11-12 | Sumitomo Rubber Industries, Ltd. | Golf club head |
| JP2017221848A (en) * | 2017-10-02 | 2017-12-21 | ダンロップスポーツ株式会社 | Golf club head |
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