JPH07144034A - Method for fixing weight for mass adjustment of golf club head - Google Patents

Method for fixing weight for mass adjustment of golf club head

Info

Publication number
JPH07144034A
JPH07144034A JP5313998A JP31399893A JPH07144034A JP H07144034 A JPH07144034 A JP H07144034A JP 5313998 A JP5313998 A JP 5313998A JP 31399893 A JP31399893 A JP 31399893A JP H07144034 A JPH07144034 A JP H07144034A
Authority
JP
Japan
Prior art keywords
weight
sheet
outer shell
weights
club 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.)
Pending
Application number
JP5313998A
Other languages
Japanese (ja)
Inventor
Kazushi Sakurauchi
一志 櫻内
Kunio Hiyama
邦夫 樋山
Toshiharu Fukushima
敏晴 福島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Corp
Original Assignee
Yamaha Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yamaha Corp filed Critical Yamaha Corp
Priority to JP5313998A priority Critical patent/JPH07144034A/en
Publication of JPH07144034A publication Critical patent/JPH07144034A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To prevent the dislodgment of weights by fusing a sheet-like member to the inside surface of a outer shell made of fiber reinforced plastic of a golf club head, embedding the weights of mass adjustment under this sheet-like member and setting the circumferential length enclosing the weights of the fused part of the sheet-like member at a prescribed length. CONSTITUTION:The outer shell 2 of the golf club head 1 is formed of a carbon fiber reinforced epoxy resin, etc., and the sheet-like member 5 consisting of the same resin matrix as the resin matrix of the outer shell 2 is fused to the inside surface of a rear side 4 facing a ball hitting part 3. The weights 6 made of lead for mass adjustment are embedded at 9 pieces in total in three rows and three steps dispersedly under this sheet-like member 5. The circumferential length enclosing the weights 6 in the fused parts of the sheet-like member 5 and the outer shell 2 is set at >=1.39cm per 1g weights.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、外殻が繊維強化プラ
スチック(以下、FRPと記す)で形成されたゴルフ用
クラブヘッドに質量調節のための錘を固定する方法に関
する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for fixing a weight for mass adjustment to a golf club head whose outer shell is formed of fiber reinforced plastic (hereinafter referred to as FRP).

【0002】[0002]

【従来の技術】この種の技術として、例えば図8に例示
したように、外殻2がFRPによって成形されたクラブ
ヘッド1の、打球部3と対向する後方4の内面などに、
例えば外殻2と同一素材からなるシート状部材5を融着
させることで、質量調節のための錘6をシート状部材5
の下に埋設して固定する技術が周知である。
2. Description of the Related Art As a technique of this kind, for example, as shown in FIG. 8, an inner surface of a rear portion 4 of a club head 1 having an outer shell 2 formed by FRP facing a hitting portion 3 and the like,
For example, the weight 6 for mass adjustment is attached to the sheet-shaped member 5 by fusing the sheet-shaped member 5 made of the same material as the outer shell 2.
A technique of burying and fixing underneath is well known.

【0003】[0003]

【発明が解決しようとする課題】しかし、上記構成の従
来のクラブヘッド1においては、錘6の形状や寸法に特
別の考慮が払われていなかったため、錘6にかかる打球
時の衝撃力を受け止めるためのシート状部材5が、長年
の使用によって外殻2から次第に剥離し、遂には錘6の
脱落が生じることがあると云った問題点があり、この点
の解決が課題とされていた。
However, in the conventional club head 1 having the above structure, no special consideration is given to the shape and size of the weight 6, and therefore the impact force applied to the weight 6 when hitting a ball is received. There is a problem that the sheet-shaped member 5 for the purpose may be gradually peeled from the outer shell 2 due to long-term use, and eventually the weight 6 may fall off, and the solution to this point has been a problem.

【0004】[0004]

【課題を解決するための手段】本発明は上記した従来技
術の課題を解決するためになされたもので、ゴルフクラ
ブヘッドにおける繊維強化プラスチック製外殻の内面に
シート状部材を融着し、質量調節用の錘をこのシート状
部材の下に埋設して固定する方法において、前記融着部
の前記錘を囲繞する周長が、錘1g当たり1.39cm
以上に形成されるゴルフクラブヘッドにおける質量調節
用錘固定方法である。
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art. A sheet-shaped member is fused to the inner surface of the outer shell made of fiber reinforced plastic in a golf club head, In the method of embedding and fixing an adjusting weight under the sheet-shaped member, the circumference of the fusion-bonded portion surrounding the weight is 1.39 cm per 1 g of the weight.
A method for fixing a weight adjusting weight in a golf club head formed as described above.

【0005】前記周長が、錘1g当たり1.39cm以
上となるように設ける理由は、これ以下の周長にする
と、長年に渡る使用によってシート状部材が外殻から剥
離し、錘が脱落することがあるためである。
The reason why the peripheral length is set to be 1.39 cm or more per 1 g of the weight is that if the peripheral length is less than this, the sheet-like member peels off from the outer shell due to long-term use and the weight falls off. This is because there is something that happens.

【0006】すなわち、ゴルフクラブヘッドの質量をM
[kg]、ヘッド全体に作用する力をF[N]、錘の質
量をm[kg]、錘に作用する力をf[N]、ヘッドお
よび錘の加速度をa[m・s-2]、外殻とシート状部材
との融着部が錘を囲繞している周長をl、シート状部材
のT剥離強度(JIS K6854:接着剤のはく離接
着強さ試験方法)をS0 [N・m-1]、錘の速度変化に
伴って前記融着部が周長単位長さ当たりに受ける力をS
1 [N・m-1]、安全係数をkとすると、錘の脱落が生
じない限り、 F=Ma f=ma の運動方程式がそれぞれに成立し、これから、 f=m・M-1・F が導かれる。
That is, the mass of the golf club head is M
[Kg], the force acting on the entire head is F [N], the mass of the weight is m [kg], the force acting on the weight is f [N], and the acceleration of the head and the weight is a [m · s −2 ]. , L is the circumferential length at which the fusion-bonded portion between the outer shell and the sheet-shaped member surrounds the weight, and T peel strength of the sheet-shaped member (JIS K6854: adhesive peeling adhesion strength test method) is S 0 [N · M −1 ], the force that the fusion-bonded part receives per unit length of the circumference along with the change in speed of the weight is S
1 [N · m −1 ], and the safety factor is k, the equation of motion of F = Ma f = ma holds for each unless the weight falls off, and from this, f = m · M −1 · F Is guided.

【0007】また、 f=l・S1 であるから、 S1 =f・l-1=m・M-1・F・l-1 であり、長年の使用によっても錘が脱落しないために
は、S0 >kS1 となるようにS1 を決める必要があ
り、このためにはlを十分大きく取る必要がある。
Further, since f = l · S 1 , S 1 = f · l −1 = m · M −1 · F · l −1 , so that the weight does not fall off even after many years of use. , S 0 > kS 1 , it is necessary to determine S 1 , and for this purpose, it is necessary to make l sufficiently large.

【0008】例えば、一般的なクラブを想定した場合、 M=0.2kg F=10000N S0 =4000〜5000N・m-1 k=1 m=0.03kg 程度であるので、 f=m・M-1・F =0.03・0.2-1・10000 =1500N S0 >S1 =f・l-1 これより、 l>f・S0 -1 =1500・4000-1 =0.375mFor example, assuming a general club, M = 0.2 kg F = 10000 N S 0 = 4000-5000 N · m −1 k = 1 m = 0.03 kg, so f = m · M −1 · F = 0.03 · 0.2 −1 · 10,000 = 1500N S 0 > S 1 = f · l −1 From this, 1> f · S 0 −1 = 1500 ・ 4000 −1 = 0.375m

【0009】すなわち、ヘッド重量(錘を含む)が20
0gのクラブに30gの錘を取り付ける場合は、この錘
の保持に必要なシート状部材と外殻との融着部が錘を囲
繞する周長は37.5cm以上が必要であり、周長がこ
れ以下の場合は、打球する度にシート状部材の剥離が次
第に進展し、遂には錘が脱落することになる。
That is, the head weight (including the weight) is 20.
When a weight of 30 g is attached to a club of 0 g, the circumference of the fusion of the sheet-like member and the outer shell necessary for holding the weight to surround the weight must be 37.5 cm or more. In the case of less than this, peeling of the sheet-like member gradually progresses each time the ball is hit, and finally the weight falls off.

【0010】なお、錘1g当たりの周長の下限値として
は、 Mmin =0.18kg Fmax =10000N S0min=4000N・m-1min =1 m=0.03kg 程度で使用することがあるので、 l・m-1>f・S0 -1 ・m-1 =F・S0 -1 ・M-1 =10000・4000-1・0.18-1 ≒13.9m・kg-1 したがって、錘1g当たり、1.39cm以上の周長が
必要である。
As a lower limit value of the circumference per 1 g of the weight,
Is Mmin = 0.18kg Fmax = 10,000 N S0min= 4000 Nm-1 kmin = 1 m = 0.03 kg or so, it may be used.-1> F ・ S0 -1 ・ M-1 = F ・ S0 -1 ・ M-1  = 10000/4000-1・ 0.18-1 ≒ 13.9m · kg-1 Therefore, a perimeter of 1.39 cm or more per 1 g of weight
is necessary.

【0011】[0011]

【作用】ハードヒッターのゴルファーがフルスイングで
打球すると、ゴルフクラブのヘッドが0.2kg程度の
クラブの場合は、打球時におけるヘッドの加速度は5×
104 [m・s-2]にも達するので、外殻の内面に固定
した錘にもこの加速度で速度が変化することを、シート
状部材と外殻の融着部が強制することになる。
When a hard hitter golfer hits a ball with a full swing, if the head of the golf club is about 0.2 kg, the acceleration of the head during hitting is 5 ×.
Since it reaches 10 4 [m · s −2 ], the fusion of the sheet-shaped member and the outer shell will force the weight fixed to the inner surface of the outer shell to change its speed due to this acceleration. .

【0012】このため、錘の質量がm[kg]であれ
ば、シート状部材には5×104 ・m[N]もの力が作
用するが、外殻とシート状部材との融着部が錘を囲繞し
ている周長は、錘1g当たり1.39cm、すなわち錘
1kg当たり13.9mもあるので、4000N・m-1
程度のT剥離強度を備えた一般的なFRPによって融着
し、錘を埋設・固定しておけば、長年に渡って打球を繰
り返し行っても、シート状部材が外殻から剥離して錘が
脱落すると云った懸念がない。
Therefore, if the mass of the weight is m [kg], a force of 5 × 10 4 · m [N] acts on the sheet-shaped member, but the fused portion between the outer shell and the sheet-shaped member The perimeter of the weight surrounding the weight is 1.39 cm per 1 g of weight, that is, 13.9 m per 1 kg of weight, so 4000 Nm -1
By fusing with a general FRP having a level of T peel strength, and embedding and fixing the weight, the sheet-shaped member will peel from the outer shell and the weight will be removed even if the ball is repeatedly hit for many years. There is no concern that it will drop out.

【0013】[0013]

【実施例】以下、図1〜図7に基づいて本発明のゴルフ
クラブヘッドにおける質量調節用錘固定方法をさらに詳
細に説明する。なお、これらの図においても、理解を容
易にするため、前記図8と同一の機能を有する部分には
同一の符号を付した。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method for fixing a mass adjusting weight in a golf club head according to the present invention will be described in more detail below with reference to FIGS. Note that, also in these drawings, the same reference numerals are given to the portions having the same functions as those in FIG. 8 in order to facilitate understanding.

【0014】図1は一実施例であり、この場合のクラブ
ヘッド1は、外殻2が例えば炭素繊維をエポキシ樹脂に
分散させたFRPなどから形成されたもので、打球部3
と対向する後方4の内面に、前記外殻2と同一樹脂マト
リックスからなるシート状部材5が、外殻2の成形時ま
たは外殻2の成形後に融着され、この融着したシート状
部材5の下に、質量調節のための鉛製の錘6が3列3段
に、合計9個に分散した状態で埋設、固定されている。
FIG. 1 shows an embodiment. In this case, the club head 1 has an outer shell 2 made of, for example, FRP in which carbon fibers are dispersed in epoxy resin, and a hitting portion 3
A sheet-like member 5 made of the same resin matrix as that of the outer shell 2 is fused to the inner surface of the rear portion 4 facing the outer shell 2 during or after the outer shell 2 is molded, and the fused sheet-like member 5 is formed. The lead weights 6 for adjusting the mass are embedded and fixed in the lower part in three rows and three stages in a total of nine dispersed states.

【0015】この図1に例示した錘6は、例えば、何れ
も1辺が1cm、厚みが2.5mmに形成されたもので
あり、相互に7mmの間隔で配設されている。
The weights 6 illustrated in FIG. 1 are, for example, each formed to have a side of 1 cm and a thickness of 2.5 mm, and are arranged at intervals of 7 mm.

【0016】したがって、この場合の外殻2とシート状
部材5との融着部が錘6を囲繞している周長は、それぞ
れの錘6において4cmであり、錘6それぞれの質量
は、鉛の密度が11.34g・cm-2であるから、1×
1×0.25×11.34=2.835gであり、した
がって、錘1g当たりの前記周長は、4÷2.835≒
1.41cmであるから、外殻2とシート状部材5と
は、錘6それぞれを保持するに必要な1.39cmを越
える、十分に長い周長をもって錘6の周囲で融着してお
り、長期間に渡って使用しても、錘6が脱落する懸念が
ない。
Therefore, in this case, the circumference length at which the fused portion between the outer shell 2 and the sheet-like member 5 surrounds the weight 6 is 4 cm in each weight 6, and the mass of each weight 6 is lead. Has a density of 11.34 g · cm -2 , so 1 ×
1 × 0.25 × 11.34 = 2.835 g, so that the perimeter per 1 g of the weight is 4 ÷ 2.835≈.
Since it is 1.41 cm, the outer shell 2 and the sheet-like member 5 are fused around the weight 6 with a sufficiently long circumference that exceeds 1.39 cm required to hold the weight 6, respectively. There is no concern that the weight 6 will fall off even if it is used for a long period of time.

【0017】なお、一つの錘6の質量は2.835gで
あるから、錘6の総質量は2.835×9≒25.5g
である。
Since the mass of one weight 6 is 2.835 g, the total mass of the weight 6 is 2.835 × 9≈25.5 g.
Is.

【0018】質量調節に用いる錘6は、図2に示したよ
うにタブレット状に形成したものであっても良いし、図
3または図4に例示したように穴開き板状錘としたり、
図5または図6に例示したように針金状錘としたり、図
7に例示したヒトデ状錘とすることなども可能である。
The weight 6 used for adjusting the mass may be formed in a tablet shape as shown in FIG. 2, or may be a perforated plate-like weight as shown in FIG. 3 or 4.
A wire-shaped weight as illustrated in FIG. 5 or 6 or a starfish-shaped weight as illustrated in FIG. 7 can be used.

【0019】錘6が、図2に例示したタブレット状の鉛
製錘である場合は、例えば直径が1cm、最大厚が3m
m、質量が1.8gなどに形成されて使用されるもので
あり、この場合の外殻2とシート状部材5との融着部が
錘6それぞれを囲繞する周長それぞれは1×πcmであ
り、したがって錘1g当たりの前記周長はπ÷1.8≒
1.75cmであり、この場合も外殻2とシート状部材
5とは、錘6それぞれを保持するに必要な十分な周長を
もって融着するので、この寸法の錘6が必要に応じて適
宜の個数配設されて、クラブヘッド1の質量調節に有効
に供される。
When the weight 6 is the tablet-shaped lead weight illustrated in FIG. 2, for example, the diameter is 1 cm and the maximum thickness is 3 m.
m, and the mass is formed to be 1.8 g or the like, and in this case, the fusion length of the outer shell 2 and the sheet-like member 5 surrounds each of the weights 6 has a perimeter of 1 × πcm. Therefore, the peripheral length per 1 g of weight is π ÷ 1.8≈
It is 1.75 cm, and in this case as well, the outer shell 2 and the sheet-like member 5 are fused with a sufficient circumferential length necessary to hold the weights 6, respectively. Are arranged, and are effectively used for mass adjustment of the club head 1.

【0020】錘6が図3に示したように、部分的にくり
抜いて形成される鉛製板状錘の場合は、例えば幅15m
m、長さ36mm、厚み5mmの矩形板から、直径が6
mmの穴7を1mm間隔で10個くり抜くと、錘6の質
量は(3.6×1.5−0.3×0.3×π×10)×
0.5×11.34≒14.59gであり、この場合の
外殻2とシート状部材5との融着部が錘6を囲繞してい
る周長は(3.6+1.5)×2+0.6×π×10≒
29.05cmであるから、錘1g当たりの前記周長は
29.05÷14.6≒1.99cmと、板状の錘6を
保持するために必要な十分な周長が形成される。
In the case where the weight 6 is a lead plate-shaped weight formed by partially hollowing out as shown in FIG. 3, the width is, for example, 15 m.
m, length 36 mm, thickness 5 mm rectangular plate, diameter 6
When the 10 mm holes 7 are cut out at 1 mm intervals, the mass of the weight 6 is (3.6 × 1.5−0.3 × 0.3 × π × 10) ×
0.5 × 11.34≈14.59 g, and in this case, the fusion length of the outer shell 2 and the sheet-like member 5 surrounding the weight 6 is (3.6 + 1.5) × 2 + 0. 6 × π × 10≈
Since it is 29.05 cm, the peripheral length per 1 g of the weight is 29.05 ÷ 14.6≈1.99 cm, which is a sufficient peripheral length required to hold the plate-shaped weight 6.

【0021】また、錘6を図4に示したように部分的に
くり抜いて形成する鉛製板状錘の場合は、例えば幅15
mm、長さ36mm、厚み5mmの矩形板から、幅3m
m、長さ30mmのスリット8を平行に3本形成し、錘
6の質量を(3.6×1.5−3×0.3×3)×0.
5×11.34≒15.31gとし、外殻2とシート状
部材5との融着部が錘6を囲繞している周長を(3.6
+1.5)×2+(3.0+0.3)×6=30cmと
し、錘1g当たりの前記周長が30÷15.31≒1.
96cmとなるように形成することなども可能である。
In the case of a lead plate-shaped weight formed by partially hollowing out the weight 6 as shown in FIG.
mm, length 36 mm, thickness 5 mm rectangular plate, width 3 m
m, and three slits 8 having a length of 30 mm are formed in parallel, and the mass of the weight 6 is (3.6 × 1.5-3 × 0.3 × 3) × 0.
5 × 11.34≈15.31 g, and the circumferential length at which the fusion-bonded portion between the outer shell 2 and the sheet-shaped member 5 surrounds the weight 6 is (3.6
+1.5) × 2 + (3.0 + 0.3) × 6 = 30 cm, and the peripheral length per 1 g of the weight is 30 ÷ 15.31≈1.
It is also possible to form it so as to be 96 cm.

【0022】錘6を図5に示したような針金状に鉛で形
成する場合は、例えば直径を4mmに形成すれば良い。
ここでは蛇行させることで総延長を30cmの長さにし
て、錘6の質量を0.2×0.2×π×30×11.3
4≒42.75gとしてあり、このときの外殻2とシー
ト状部材5との融着部が錘6を囲繞している周長は、凡
そ30×2=60cmであるから、錘1g当たりの周長
は60÷42.75≒1.40cmとなって、針金状の
錘6を保持するために必要な十分な周長が形成される。
When the weight 6 is formed of lead in a wire shape as shown in FIG. 5, it may be formed to have a diameter of 4 mm, for example.
Here, the length of the weight 6 is 0.2 × 0.2 × π × 30 × 11.3.
4≈42.75 g, and the peripheral length at which the fusion-bonded portion between the outer shell 2 and the sheet-like member 5 surrounds the weight 6 is about 30 × 2 = 60 cm, so 1 g of weight per 1 g of weight The peripheral length is 60 ÷ 42.75≈1.40 cm, and a sufficient peripheral length necessary to hold the wire-shaped weight 6 is formed.

【0023】また、錘6を図6に示したような鉛製の網
状錘に形成する場合は、例えば直径が3mmである鉛製
の針金によって組み上げあげれば良い。ここでは総延長
を40cmの長さとしているので、錘6の総質量は0.
15×0.15×π×40×11.34≒32.06g
であり、このときの外殻2とシート状部材5との融着部
が錘6を囲繞している周長は凡そ40×2=80cmで
あるから、錘1g当たりの周長は80÷32.06≒
2.50cmであり、この場合も網目状の錘6を保持す
るために必要な十分な周長が形成される。
When the weight 6 is formed of a lead net weight as shown in FIG. 6, it may be assembled by a lead wire having a diameter of 3 mm, for example. Since the total length is 40 cm here, the total mass of the weight 6 is 0.
15 × 0.15 × π × 40 × 11.34≈32.06g
Since the fusion length of the outer shell 2 and the sheet-like member 5 surrounding the weight 6 at this time is about 40 × 2 = 80 cm, the circumference per 1 g of the weight is 80 ÷ 32. 0.06 ≒
It is 2.50 cm, and in this case as well, a sufficient peripheral length necessary to hold the mesh weight 6 is formed.

【0024】錘6を、図7に示したヒトデ状に形成する
場合は、中心部側への切り込みの個数と深さによって、
錘1g当たりの外殻2とシート状部材5との融着部が錘
6を囲繞している周長は変化するので、この場合も錘1
gに対して前記周長が1.39cm以上となるように形
成される。
When the weight 6 is formed into a starfish shape as shown in FIG. 7, depending on the number and depth of cuts on the center side,
Since the peripheral length surrounding the weight 6 by the fused portion of the outer shell 2 and the sheet-shaped member 5 per 1 g of the weight changes, the weight 1 also in this case.
The circumference is 1.39 cm or more with respect to g.

【0025】なお、本発明は上記実施例に限定されるも
のではないので、特許請求の範囲に記載の趣旨に沿って
各種の変形実施が可能である。
Since the present invention is not limited to the above-mentioned embodiment, various modifications can be made within the scope of the claims.

【0026】例えば、錘6を固定するシート状部材5が
最も剥離し易い部位は、実施例に示したクラブヘッド1
の後方4の内面に錘6を固定したときであるので、外殻
2とシート状部材5との融着部が錘6を囲繞している周
長を上記したように錘1g当たり1.39cm以上とし
ておけば、他の適宜の部位、例えばクラブヘッド1の上
部内面、下部内面、側部内面、打球部2の内面などの何
れか、あるいはこれらの部位に適宜分散して固定するこ
とができる。
For example, the portion where the sheet-like member 5 for fixing the weight 6 is most easily peeled off is the club head 1 shown in the embodiment.
Since the weight 6 is fixed to the inner surface of the rear portion 4 of the above, the circumference length at which the fusion-bonded portion of the outer shell 2 and the sheet-like member 5 surrounds the weight 6 is 1.39 cm per 1 g of the weight as described above. With the above, it can be fixed to any other appropriate portion, for example, the upper inner surface, the lower inner surface, the side inner surface of the club head 1, the inner surface of the hitting portion 2, etc., or these portions in an appropriately dispersed manner. .

【0027】また、錘6の表面は粗く形成して、シート
状部材5によって埋設されたときに、外殻2から剥離し
難く形成することなども可能である。
It is also possible to make the surface of the weight 6 rough so that it is difficult to separate from the outer shell 2 when it is embedded in the sheet-shaped member 5.

【0028】[0028]

【発明の効果】以上説明したように本発明によれば、打
球を繰り返し行ってもシート状部材が外殻から剥離する
ことがないため、使用が長年に渡っても質量調節のため
に固定した錘が脱落すると云った懸念がない。
As described above, according to the present invention, the sheet-shaped member does not separate from the outer shell even if the ball is repeatedly hit. Therefore, the sheet-shaped member is fixed for mass adjustment even after many years of use. There is no concern that the weight will fall out.

【図面の簡単な説明】[Brief description of drawings]

【図1】 一実施例を示す説明図。FIG. 1 is an explanatory diagram showing an example.

【図2】 変形実施の要部を示す説明図。FIG. 2 is an explanatory diagram showing a main part of a modified embodiment.

【図3】 変形実施の要部を示す説明図。FIG. 3 is an explanatory diagram showing a main part of a modified embodiment.

【図4】 変形実施の要部を示す説明図。FIG. 4 is an explanatory diagram showing a main part of a modified embodiment.

【図5】 変形実施の要部を示す説明図。FIG. 5 is an explanatory view showing a main part of a modified embodiment.

【図6】 変形実施の要部を示す説明図。FIG. 6 is an explanatory diagram showing a main part of a modified embodiment.

【図7】 変形実施の要部を示す説明図。FIG. 7 is an explanatory diagram showing a main part of a modified embodiment.

【図8】 従来技術を示す説明図。FIG. 8 is an explanatory diagram showing a conventional technique.

【符号の説明】[Explanation of symbols]

1…クラブヘッド 2…外殻 3…打球部 4…後方
5…シート状部材 6…錘 7…穴、、8…スリット
1 ... Club head 2 ... Outer shell 3 ... Hitting portion 4 ... Rear
5 ... Sheet-shaped member 6 ... Weight 7 ... Hole, ... 8 ... Slit

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 ゴルフクラブヘッドにおける繊維強化プ
ラスチック製外殻の内面にシート状部材を融着し、質量
調節用の錘をこのシート状部材の下に埋設して固定する
方法であって、前記融着部の前記錘を囲繞する周長が、
錘1g当たり1.39cm以上に形成されることを特徴
とするゴルフクラブヘッドにおける質量調節用錘固定方
法。
1. A method for fusing a sheet-shaped member to the inner surface of an outer shell made of fiber reinforced plastic in a golf club head, and embedding and fixing a weight for weight adjustment under the sheet-shaped member, the method comprising: The circumference surrounding the weight of the fused portion is
1. A method for fixing a weight for mass adjustment in a golf club head, wherein the weight is formed to be 1.39 cm or more per 1 g of the weight.
JP5313998A 1993-11-22 1993-11-22 Method for fixing weight for mass adjustment of golf club head Pending JPH07144034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5313998A JPH07144034A (en) 1993-11-22 1993-11-22 Method for fixing weight for mass adjustment of golf club head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5313998A JPH07144034A (en) 1993-11-22 1993-11-22 Method for fixing weight for mass adjustment of golf club head

Publications (1)

Publication Number Publication Date
JPH07144034A true JPH07144034A (en) 1995-06-06

Family

ID=18047994

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5313998A Pending JPH07144034A (en) 1993-11-22 1993-11-22 Method for fixing weight for mass adjustment of golf club head

Country Status (1)

Country Link
JP (1) JPH07144034A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006130065A (en) * 2004-11-05 2006-05-25 Bridgestone Sports Co Ltd Golf club head
US7445564B2 (en) * 2004-03-30 2008-11-04 Daiwa Seiko, Inc. Golf club head

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7445564B2 (en) * 2004-03-30 2008-11-04 Daiwa Seiko, Inc. Golf club head
JP2006130065A (en) * 2004-11-05 2006-05-25 Bridgestone Sports Co Ltd Golf club head

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