JP2002253715A - Shaft for golf club - Google Patents
Shaft for golf clubInfo
- Publication number
- JP2002253715A JP2002253715A JP2001054127A JP2001054127A JP2002253715A JP 2002253715 A JP2002253715 A JP 2002253715A JP 2001054127 A JP2001054127 A JP 2001054127A JP 2001054127 A JP2001054127 A JP 2001054127A JP 2002253715 A JP2002253715 A JP 2002253715A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- resin layer
- fiber
- reinforced resin
- golf club
- 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
Links
Landscapes
- Golf Clubs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、強度特性に優れた
ゴルフクラブ用シャフト及びその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club shaft having excellent strength characteristics and a method of manufacturing the same.
【０００２】[0002]
【従来の技術】ゴルフクラブ用シャフトとしては金属製
と繊維強化樹脂製が普及しており、特に炭素繊維強化樹
脂製（カーボンシャフト）が普及しているが、金属製シ
ャフトは高重量ではあるが均質性に優れ、アイアンクラ
ブ用や力量のある上級者に広く使用され、繊維強化樹脂
製は軽量で設計の自由度が広くウッドクラブ用や一般ア
マチュア向けのアイアンクラブ用に広く使用されてい
る。2. Description of the Related Art Metal shafts and fiber reinforced resin shafts for golf clubs have become widespread. Particularly, carbon fiber reinforced resin shafts (carbon shafts) have become widespread. It has excellent properties and is widely used for iron clubs and advanced users. The fiber reinforced resin is lightweight and has a wide degree of freedom in design, and is widely used for wood clubs and iron clubs for general amateurs.
【０００３】更に金属と炭素繊維強化樹脂を複合したシ
ャフトも市販されている。例えば、特開昭５０−３０６
３８号公報、特開昭５０−６５３３６号公報には、打球
の飛距離増大とスイング中の曲がりを生じないで打球方
向を確保した発明が開示され、又、実公昭４９−４３２
３４号公報、実公昭４９−４３２３５号公報、実公昭５
０−８６８５号公報、実公昭５０−８６８６号公報、実
公昭５１−８０３９号公報、実公昭５１−１３９８５号
公報及び実公昭５２−２８６１１号公報には、スチール
シャフトとカーボン繊維、ガラス繊維等のＦＲＰを複合
することによりシャフトの剛性や強度を高める技術が開
示されている。[0003] Further, a shaft comprising a composite of metal and carbon fiber reinforced resin is also commercially available. For example, JP-A-50-306
No. 38 and Japanese Patent Application Laid-Open No. 50-65336 disclose an invention in which the flight distance of a hit ball is increased and the hitting direction is ensured without causing bending during a swing.
No. 34, Japanese Utility Model Publication No. 49-43235, Japanese Utility Model Publication No. 5
No. 0-8885, Japanese Utility Model Publication No. Sho 50-8686, Japanese Utility Model Publication No. Sho 51-8039, Japanese Utility Model Publication No. Sho 51-13985 and Japanese Utility Model Publication No. Sho 52-28611 disclose steel shafts, carbon fibers, glass fibers and the like. A technique for increasing the rigidity and strength of a shaft by combining FRP is disclosed.
【０００４】このようなシャフトはスチールシャフトと
繊維強化樹脂の利点を兼ね備えることが可能になる、一
方、実用新案第２５２９０４１号には、手元部及びその
近傍部位を繊維強化樹脂層と金属材層とからなる複合積
層構造とし、他の部位を繊維強化樹脂で構成することに
より軽量化とフィーリング特性等に優れたゴルフクラブ
用シャフトが開示され、特開昭５６−２０４７２号公報
には、スチールシャフトの太径及び細径端部の両方に炭
素繊維強化樹脂で補強することにより軽量で剛性分布に
特徴のあるシャフトが開示されている。Such a shaft can combine the advantages of a steel shaft and a fiber-reinforced resin. On the other hand, Japanese Utility Model No. 2529041 discloses that a hand portion and a portion in the vicinity thereof are formed of a fiber-reinforced resin layer and a metal material layer. A golf club shaft excellent in weight reduction and feeling characteristics by disposing a composite laminated structure consisting of a fiber reinforced resin in another portion is disclosed in JP-A-56-20472. A light-weight shaft characterized by rigidity distribution is disclosed by reinforcing both the large-diameter and small-diameter ends with carbon fiber reinforced resin.
【０００５】しかしながら、上記ゴルフクラブ用シャフ
トは、金属製シャフトに熱硬化性樹脂をマトリックス樹
脂とする繊維強化樹脂の中間材料を巻き付け硬化して製
造されるため、スチールと繊維強化樹脂層の熱膨張係数
の違い、打撃による曲げ疲労、振動などのためにスチー
ルと繊維強化樹脂層との間で剥離が生じやすいという問
題があった。However, since the golf club shaft is manufactured by winding an intermediate material of a fiber reinforced resin having a thermosetting resin as a matrix resin around a metal shaft and hardening the same, the thermal expansion of the steel and the fiber reinforced resin layer is caused. There has been a problem that peeling is likely to occur between the steel and the fiber reinforced resin layer due to a difference in coefficient, bending fatigue due to impact, vibration, and the like.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、金属製シャ
フトの外側面に繊維強化樹脂層を設けたゴルフクラブ用
シャフトにおいて、金属製シャフトと繊維強化樹脂層が
剥離しやすく、たとえ金属製シャフトと繊維強化樹脂層
間に接着剤層を用いても十分な曲げ強度が得られないと
いう問題を改良した、ゴルフクラブ用シャフトを提供す
るものである。SUMMARY OF THE INVENTION The present invention relates to a golf club shaft in which a fiber reinforced resin layer is provided on the outer surface of a metal shaft. It is intended to provide a golf club shaft in which the problem that a sufficient bending strength cannot be obtained even when an adhesive layer is used between the fiber reinforced resin layers.
【０００７】[0007]
【課題を解決するための手段】本発明の第１の要旨は、
金属製シャフトの外側面に繊維強化樹脂層を設けたゴル
フクラブ用シャフトにおいて、前記金属製シャフトと繊
維強化樹脂層とが、以下の方法により測定される剪断接
着強さが５ＭＰａ以上の樹脂からなり、１０〜１００μ
ｍの厚さ有する中間樹脂層を介して一体化されているこ
とを特徴とするゴルフクラブ用シャフトにある。ここ
で、剪断接着強さ測定方法は以下の通りである。A first gist of the present invention is as follows.
In a golf club shaft provided with a fiber reinforced resin layer on the outer surface of a metal shaft, the metal shaft and the fiber reinforced resin layer are made of a resin having a shear bond strength of 5 MPa or more measured by the following method. , 10-100μ
A golf club shaft, wherein the shaft is integrated via an intermediate resin layer having a thickness of m. Here, the method for measuring the shear bond strength is as follows.
【０００８】１）金属シャフトと同材質金属板及び繊維
強化樹脂層と同材質の繊維強化樹脂板を幅２５ｍｍ、長
さ１００ｍｍ、厚さ２．２ｍｍの大きさにそれぞれ切り
出す。 ２）両者の接着部分を＃４００のサンドペーパー研磨
し、次いでメチルエチルケトンで脱脂し、両端１２．５
ｍｍが重なり合うように中間樹脂層を形成する樹脂で両
者を接着圧１ｋｇｆ／ ｃｍ２、１２０℃で３０分で接
着して、剪断接着強さ測定用試験片（ＪＩＳ Ｋ ６８
５０）５ヶを作製する。 ３）作製した試験片で引張り速度２ｍｍ／分で引張り試
験を行い、５つの測定結果の平均値を求め、剪断接着強
さとする。1) A metal plate of the same material as the metal shaft and a fiber reinforced resin plate of the same material as the fiber reinforced resin layer are cut into a size of 25 mm in width, 100 mm in length, and 2.2 mm in thickness. 2) The bonded portion of both was polished with # 400 sandpaper, then degreased with methyl ethyl ketone, and 12.5
The two are bonded together at a bonding pressure of 1 kgf / cm 2 at 120 ° C. for 30 minutes using a resin forming an intermediate resin layer such that the mm overlaps each other, and a test piece for measuring the shear bond strength (JIS K 68)
50) Produce 5 pieces. 3) A tensile test is performed on the prepared test piece at a tensile speed of 2 mm / min, an average value of five measurement results is determined, and the average value is defined as a shear bond strength.
【０００９】又、本発明の第２の要旨は、金属製シャフ
トの外側面に、厚さが１０〜１１０μｍのフィルム状接
着剤を貼付し、その上に繊維強化樹脂中間材料を巻き付
け、加熱硬化するゴルフクラブ用シャフトの製造方法に
ある。[0009] A second gist of the present invention resides in that a film-like adhesive having a thickness of 10 to 110 µm is adhered to the outer surface of a metal shaft, and a fiber-reinforced resin intermediate material is wound thereon, followed by heat curing. Manufacturing method of a golf club shaft.
【００１０】[0010]
【発明の実施の形態】以下に、本発明の望ましい実施の
形態と共に、本発明について詳細に説明する。 （金属製シャフト）本発明で用いる金属製シャフトに用
いる材料としては、機械構造用合金鋼であるクロムモリ
ブテン鋼鋼材（記号ＳＣＭ）や機械構造用炭素鋼鋼管
（記号ＳＴＫＭ）が好適なものとして挙げられる。アル
ミ合金は軽量にできるが、高い接着強度を得るには、ク
ロメート処理等の表面処理が必要となる。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail together with preferred embodiments of the present invention. (Metal Shaft) As the material used for the metal shaft used in the present invention, chromium molybdenum steel (symbol SCM), which is an alloy steel for machine structures, and carbon steel pipe for machine structures (symbol STKM) are preferred. Can be Aluminum alloys can be made lightweight, but surface treatment such as chromate treatment is required to obtain high adhesive strength.
【００１１】上記の金属製シャフトは、引張り強度が４
００ＭＰａ以上、より好ましくは５００ＭＰａ以上の金
属材料で形成されたものであり、引張り破断伸度が１０
％以上の金属素材で形成され、重量が７０〜１１５ｇ、
より好ましくは８５〜１１０ｇが良い。スチールシャフ
トに使う材料は強度および靱性が高い方が望ましい。こ
こで引張強度はＪＩＳ Ｚ ２２０１で測定される。The above-mentioned metal shaft has a tensile strength of 4
It is formed of a metal material having a tensile strength at break of 10 MPa or more, more preferably 500 MPa or more.
% Of metal material, the weight is 70-115 g,
More preferably, the weight is 85 to 110 g. The material used for the steel shaft preferably has high strength and toughness. Here, the tensile strength is measured according to JIS Z 2201.
【００１２】引張り強度が４００ＭＰａ未満、伸びが１
０％未満の材料ではシャフトとして使用するには強度、
靱性が不十分となる。また十分な強度、靱性を有する素
材を使用しても重量が７０ｇ未満ではゴルフクラブ用シ
ャフトとして十分な強度特性を達することが難しく、１
１５ｇを超えるとゴルフクラブ用シャフトとして重量が
重くなり過ぎる。[0012] Tensile strength is less than 400MPa, elongation is 1
With less than 0% of material, strength to use as shaft,
Poor toughness. Even if a material having sufficient strength and toughness is used, if the weight is less than 70 g, it is difficult to achieve sufficient strength characteristics as a golf club shaft, and
If it exceeds 15 g, the weight becomes too heavy for a golf club shaft.
【００１３】（繊維強化樹脂層）本発明で、前記金属製
シャフトの外側面に設ける繊維強化樹脂層を構成する強
化繊維は、特に限定されないがガラス繊維、炭素繊維、
ボロン繊維、炭化珪素繊維、アルミナ繊維、アラミド繊
維、ポリフェニレンベンゾビスオキサゾール繊維等が例
示される。中でも引張り弾性率５０〜６００ＧＰａ、よ
り好ましくは５０〜３００ＧＰａの炭素繊維をシャフト
長手方位に対して０〜４５°の範囲で配向させて用いる
のが好適である。強化繊維として５０〜６００ＧＰａの
炭素繊維を用いることにより重量の増加が少なく芯材ス
チールの剛性補強の大きさのコントロールを容易にする
が、５００ＧＰａを超える超高弾性の炭素繊維は圧縮強
度及びマトリックス樹脂との接着強度が低い傾向にあり
好ましくない。(Fiber Reinforced Resin Layer) In the present invention, the reinforcing fibers constituting the fiber reinforced resin layer provided on the outer surface of the metal shaft are not particularly limited, but include glass fibers, carbon fibers, and the like.
Examples include boron fiber, silicon carbide fiber, alumina fiber, aramid fiber, and polyphenylene benzobisoxazole fiber. Among them, it is preferable to use a carbon fiber having a tensile elasticity of 50 to 600 GPa, more preferably 50 to 300 GPa, oriented in a range of 0 to 45 ° with respect to the longitudinal direction of the shaft. By using carbon fibers of 50 to 600 GPa as the reinforcing fibers, the weight increase is small and the size of the rigid reinforcement of the core steel is easily controlled, but the ultra-high elastic carbon fibers exceeding 500 GPa have a compressive strength and a matrix resin. This is not preferred because the adhesive strength with the adhesive tends to be low.
【００１４】又、繊維強化樹脂層に用いられるマトリッ
クス樹脂も、特に限定されないが、エポキシ樹脂、不飽
和ポリエステル樹脂、ビニルエステル樹脂、ポリイミド
樹脂、ポリビスマレイミド樹脂といった熱硬化性樹脂や
熱可塑性樹脂を用いることができる。中でもエポキシ樹
脂は硬化収縮率が小さく、耐湿性、耐候性に優れ、色々
な接着剤と接着性が良好であるので、強化繊維樹脂層の
マトリックス樹脂として最適である。さらに好ましくは
マトリックス樹脂用エポキシ樹脂の曲げ弾性率が２．８
〜４ＧＰａ程度とすると強化繊維、特に炭素繊維の強度
特性発現性が良好となる。The matrix resin used for the fiber reinforced resin layer is not particularly limited, either, but is not limited to a thermosetting resin or a thermoplastic resin such as an epoxy resin, an unsaturated polyester resin, a vinyl ester resin, a polyimide resin, or a polybismaleimide resin. Can be used. Among them, epoxy resin has a small curing shrinkage ratio, is excellent in moisture resistance and weather resistance, and has good adhesiveness with various adhesives, so that it is most suitable as a matrix resin of the reinforcing fiber resin layer. More preferably, the flexural modulus of the epoxy resin for the matrix resin is 2.8.
When it is set to about 4 GPa, the strength properties of the reinforcing fibers, particularly carbon fibers, are improved.
【００１５】本発明において、繊維強化樹脂層を設けて
金属製シャフトを被覆する範囲は、シャフト長手方向の
全範囲に亘って覆っても、所望する剛性分布を持つゴル
フクラブ用シャフトとなるよう、シャフト長手方向のあ
る部分にのみ繊維強化樹脂層を設けて被覆しても良い。In the present invention, the range in which the fiber-reinforced resin layer is provided to cover the metal shaft is such that a golf club shaft having a desired rigidity distribution can be obtained even if it covers the entire range in the longitudinal direction of the shaft. The fiber reinforced resin layer may be provided and covered only at a certain portion in the longitudinal direction of the shaft.
【００１６】例えば、金属製シャフトの手元部を除いて
繊維強化樹脂層を設けて金属製シャフトを被覆し、手元
部で金属製シャフトを露出させれば、先端剛性が高く、
手に伝わる打球感（フィーリング）、触感は金属製シャ
フトに近いものとすることができる。For example, if the metal shaft is covered by providing a fiber reinforced resin layer except for the hand portion of the metal shaft and the metal shaft is exposed at the hand portion, the rigidity at the tip is high,
The shot feeling (feeling) and tactile sensation transmitted to the hand can be close to that of a metal shaft.
【００１７】逆に、金属製シャフトの先端部を除いて繊
維強化樹脂層を設けて金属製シャフトを被覆し、先端部
で金属製シャフトを露出させれば、手元部の剛性が高く
なるので先調子となり、フィーリングはしっかり感を高
めたシャフトとすることができる。繊維強化樹脂層の厚
みは、所望する剛性によって変え得るので、特に限定さ
れない。Conversely, if the metal shaft is covered by providing a fiber reinforced resin layer except for the tip of the metal shaft and exposing the metal shaft at the tip, the rigidity of the hand becomes high, so that It is in good condition and the feeling can be made with a shaft with enhanced feeling. The thickness of the fiber reinforced resin layer is not particularly limited because it can be changed depending on desired rigidity.
【００１８】（中間樹脂層）次に本発明で用いる中間樹
脂層について述べる。中間樹脂層は、金属製シャフトと
繊維強化樹脂層とを強固に接着する必要性から、１）以
下の方法で測定する剪断接着強さ、及び、２）その厚み
を特定範囲とすることが必要である。この条件のどちら
が欠けても本発明の効果は得られない。(Intermediate resin layer) Next, the intermediate resin layer used in the present invention will be described. Since the intermediate resin layer needs to firmly bond the metal shaft and the fiber reinforced resin layer, 1) the shear bond strength measured by the following method, and 2) the thickness thereof needs to be in a specific range. It is. Either of these conditions lacks the effect of the present invention.
【００１９】中間樹脂層を形成する樹脂は、剪断接着強
さ５ＭＰａ以上であることが必要であり、より好ましく
は７ＭＰａ以上、さらに好ましくは１０ＭＰａ以上であ
る。５ＭＰａ未満の接着剤ではゴルフクラブ用シャフト
とした時に金属製シャフトと繊維強化樹脂層が剥離する
可能性がある。The resin forming the intermediate resin layer must have a shear adhesive strength of 5 MPa or more, more preferably 7 MPa or more, and further preferably 10 MPa or more. If the adhesive is less than 5 MPa, there is a possibility that the metal shaft and the fiber reinforced resin layer may peel off when the golf club shaft is used.
【００２０】ここでいう剪断接着強さとは、ＪＩＳ Ｋ
６８５０で規定される方法により測定される。すなわ
ち、 剪断接着強さの測定方法 １）金属シャフトと同材質金属板及び繊維強化樹脂層と
同材質の繊維強化樹脂板を幅２５ｍｍ、長さ１００ｍ
ｍ、厚さ２．２ｍｍの大きさにそれぞれ切り出す。 ２）両者の接着部分を＃４００のサンドペーパー研磨
し、次いでメチルエチルケトンで脱脂し、両端１２．５
ｍｍが重なり合うように中間樹脂層を形成する樹脂で両
者を接着圧１ｋｇｆ／ ｃｍ２、１２０℃で３０分で接
着して、剪断接着強さ測定用試験片（ＪＩＳ Ｋ ６８
５０）５ケを作製する。 ３）作製した試験片で引張り速度２ｍｍ／分で引張り試
験を行い、５つの測定結果の平均値を求め、剪断接着強
さとする。[0020] The shear adhesive strength referred to herein is JIS K
It is measured by the method specified in 6850. That is, the method for measuring the shear bond strength 1) A metal plate made of the same material as the metal shaft and a fiber reinforced resin plate made of the same material as the fiber reinforced resin layer are 25 mm wide and 100 m long.
m, and cut out to a size of 2.2 mm in thickness. 2) The bonded portion of both was polished with # 400 sandpaper, then degreased with methyl ethyl ketone, and 12.5
The two are bonded together at a bonding pressure of 1 kgf / cm 2 at 120 ° C. for 30 minutes using a resin forming an intermediate resin layer such that the mm overlaps each other, and a test piece for measuring the shear bond strength (JIS K 68)
50) Produce 5 pieces. 3) A tensile test is performed on the prepared test piece at a tensile speed of 2 mm / min, an average value of five measurement results is determined, and the average value is defined as a shear bond strength.
【００２１】用いる樹脂の化学組成は特に限定されない
が、十分な接着を有し、耐候性に優れた、ゴム変性等の
改質をしたエポキシ樹脂や、シリコン系などのゴム弾性
を有する接着剤を例示することができる。用いる接着剤
の硬化物の弾性率としては２０〜３５００ＭＰａ、より
好ましくは３０〜３０００ＭＰａが望ましい。接着剤の
引張り弾性率が２０ＭＰａ未満では弾性率が低すぎるの
ため高い剪断接着強さが得にくく、３５００ＭＰａをこ
えると樹脂としては脆いので接着耐久性が低くなる傾向
にある。The chemical composition of the resin to be used is not particularly limited, but an epoxy resin having sufficient adhesion and excellent weather resistance, modified by rubber modification or the like, or an adhesive having rubber elasticity such as silicone resin is used. Examples can be given. The cured product of the adhesive used has an elastic modulus of preferably 20 to 3500 MPa, more preferably 30 to 3000 MPa. If the tensile elastic modulus of the adhesive is less than 20 MPa, it is difficult to obtain a high shearing adhesive strength because the elastic modulus is too low, and if it exceeds 3500 MPa, the resin is brittle and the adhesive durability tends to decrease.
【００２２】又、かかる中間樹脂層の厚さは１０〜１０
０μｍであることが必要であり、より好ましくは１０〜
８０μｍである。１０μｍ未満では接着層が薄すぎるの
で十分な剪断接着強さを有していても接着強度が発現し
ないことがあり、１００μｍを越えるとゴルフクラブ用
シャフトとしたときの重量が重くなる、又外側面に設け
られた繊維強化樹脂層中の強化繊維の配向が中間樹脂層
の樹脂の流動に伴って乱れるために、シャフトとした際
の曲げ強度の低下が避けられない。The thickness of the intermediate resin layer is 10 to 10
0 μm, and more preferably 10 μm.
80 μm. If it is less than 10 μm, the adhesive layer is too thin, so that the adhesive strength may not be exhibited even if it has a sufficient shearing adhesive strength. If it exceeds 100 μm, the weight of the golf club shaft becomes heavy, Since the orientation of the reinforcing fibers in the fiber reinforced resin layer provided in the above is disturbed with the flow of the resin in the intermediate resin layer, a decrease in bending strength when the shaft is used is inevitable.
【００２３】更に中間樹脂層中に薄いガラス繊維、炭素
繊維、ナイロンやポリエステルなどの合成繊維でできた
不織布や織物又は一定方向に配向した長繊維や短繊維を
含んでいると、成形中に中間樹脂層の樹脂の流出を防
ぎ、その厚さを一定に保つことができる。そのため高い
剪断接着強さを維持し、外側面に設けられた繊維強化樹
脂層中の強化繊維の配向乱れ、蛇行を効果的に防止でき
るのでより好ましい。Furthermore, if the intermediate resin layer contains a nonwoven fabric or woven fabric made of thin glass fiber, carbon fiber, synthetic fiber such as nylon or polyester, or long fibers or short fibers oriented in a certain direction, the intermediate resin during the molding may be used. Outflow of the resin in the resin layer can be prevented, and the thickness thereof can be kept constant. Therefore, it is more preferable because high shear adhesive strength is maintained, and the orientation disorder and meandering of the reinforcing fibers in the fiber reinforced resin layer provided on the outer surface can be effectively prevented.
【００２４】次に本発明のゴルフクラブ用シャフトの製
造方法について述べる。まず、金属製シャフトの外側面
は、必要に応じて、サンディング、脱脂を行なう。この
とき、サンディングは市販されている＃４００のサンド
ペーパーで仕上げることが好ましい。又、脱脂はメチル
エチルケトンやアセトン等の有機溶媒を用いて行なう。Next, a method of manufacturing the golf club shaft of the present invention will be described. First, the outer surface of the metal shaft is sanded and degreased as necessary. At this time, it is preferable to finish the sanding with a commercially available # 400 sandpaper. Degreasing is performed using an organic solvent such as methyl ethyl ketone or acetone.
【００２５】次に、中間樹脂層を形成する樹脂を、厚さ
が１０〜１１０μｍとなるよう形成する。中間樹脂層を
形成する樹脂としては、例えば、市販のフィルム接着剤
のうち、厚さが上述する範囲内のものを使用することが
できる。Next, a resin for forming the intermediate resin layer is formed so as to have a thickness of 10 to 110 μm. As the resin for forming the intermediate resin layer, for example, a commercially available film adhesive having a thickness within the above-mentioned range can be used.
【００２６】さらに、その上に繊維強化樹脂層を形成す
る繊維強化樹脂中間材料を巻き付け、その後、常法にし
たがって加熱硬化する。このとき、繊維強化樹脂層上に
幅１０ｍｍ程度のテープ状ラッピングフィルムを一定間
隔で巻き付けた後、所定温度で硬化、成形するのが最適
な方法として挙げられる。中間樹脂層を形成する樹脂層
の厚さを１０〜１１０μｍとすることで、樹脂が流れ、
金属製シャフトの外側面及び繊維強化樹脂層の内面の微
小な凹凸を埋め、剪断接着強さを高め、さらに硬化収縮
しても中間樹脂層の厚さを１０〜１００μｍの範囲に形
成することができる。Further, a fiber-reinforced resin intermediate material for forming a fiber-reinforced resin layer is wound thereon, and then heat-cured according to a conventional method. At this time, an optimal method is to wind a tape-shaped wrapping film having a width of about 10 mm on the fiber reinforced resin layer at a constant interval, and then cure and mold at a predetermined temperature. By setting the thickness of the resin layer forming the intermediate resin layer to 10 to 110 μm, the resin flows,
Fills the small irregularities on the outer surface of the metal shaft and the inner surface of the fiber reinforced resin layer, increases the shear adhesive strength, and can form the intermediate resin layer in the thickness range of 10 to 100 μm even after curing and shrinking. it can.
【００２７】なお、フィルム接着剤を予め繊維強化樹脂
層中間材料に貼り付け、金属製シャフトにフィルム接着
剤が内側になるよう巻き付けると、中間樹脂層と繊維強
化樹脂層との間の剪断接着強さがさらに高まり好まし
い。When the film adhesive is previously applied to the intermediate material of the fiber reinforced resin layer and wound around the metal shaft so that the film adhesive is on the inside, the shear adhesive strength between the intermediate resin layer and the fiber reinforced resin layer is increased. Is more preferable.
【００２８】フィルム接着剤としては、ゴム変性したエ
ポキシ系が接着強度が高いので好適に用いられ、ラッピ
ングフィルムとしては厚さが１０〜４０μｍ程、幅が１
０〜３０ｍｍのポリエチレンテレフタレートやポリプロ
ピレン製のものが好適である。As the film adhesive, a rubber-modified epoxy system is preferably used because of its high adhesive strength, and the wrapping film has a thickness of about 10 to 40 μm and a width of 1 to 1.
Those made of polyethylene terephthalate or polypropylene having a thickness of 0 to 30 mm are preferable.
【００２９】製造に用いるフィルム接着剤にガラス繊
維、炭素繊維あるいはナイロン、ポリエステル繊維など
の合成繊維を担持材として含むとフィルム接着剤の扱い
が容易になるばかりでなく、加熱硬化過程で中間樹脂層
の樹脂の過剰な流動を抑え、中間樹脂層の厚みが一定に
なり、繊維強化樹脂層の強化繊維の配向の乱れ、繊維蛇
行が生じることがないので有効である。担持材の形態は
特に限定されないが不織布、スクリムといわれる薄い織
物、あるいは長繊維が一定方向に配向したもの、短繊維
が分散された形態が例示される。When the film adhesive used in the production contains glass fiber, carbon fiber or synthetic fiber such as nylon or polyester fiber as a carrier, not only the handling of the film adhesive becomes easy, but also the intermediate resin layer during the heat curing process. This is effective because excessive flow of the resin is suppressed, the thickness of the intermediate resin layer becomes constant, and the orientation of the reinforcing fibers of the fiber reinforced resin layer is not disturbed and the fiber meandering does not occur. The form of the support material is not particularly limited, and examples thereof include a nonwoven fabric, a thin woven fabric called a scrim, a form in which long fibers are oriented in a certain direction, and a form in which short fibers are dispersed.
【００３０】本発明のゴルフクラブ用シャフトの別の製
造方法としては、金属製シャフトに室温硬化型接着剤を
厚さ１０〜１１０μｍに塗布して中間樹脂層を形成し、
次いで繊維強化樹脂層となる繊維強化樹脂層中間材料を
巻き付け、ラッピングフィルムで固定した後、室温で中
間樹脂層を硬化し、さらに加熱処理して繊維強化樹脂層
中間材料を硬化成型する方法を挙げることができる。As another method of manufacturing the golf club shaft of the present invention, an intermediate resin layer is formed by applying a room temperature curing type adhesive to a metal shaft to a thickness of 10 to 110 μm.
Next, a method of winding a fiber reinforced resin layer intermediate material to be a fiber reinforced resin layer, fixing the reinforced film with a wrapping film, curing the intermediate resin layer at room temperature, and further performing a heat treatment to cure and mold the fiber reinforced resin layer intermediate material is given. be able to.
【００３１】この方法によれば、中間樹脂層が硬化する
際に繊維強化樹脂層が軟化することがないので、強化繊
維の配向の乱れ、繊維蛇行は生じない。室温硬化型接着
剤の種類としては特に限定されないが、エポキシ系やシ
リコンゴム系などの２液型が例示され、中でも硬化時間
が１０〜６０分のものを使用すると調製作業が行ないや
すい。According to this method, the fiber-reinforced resin layer is not softened when the intermediate resin layer is cured, so that the orientation of the reinforcing fibers is not disturbed and the fibers do not meander. The type of the room temperature curing adhesive is not particularly limited, but a two-pack type such as an epoxy-based or silicone rubber-based adhesive is exemplified. In particular, when a curing time of 10 to 60 minutes is used, the preparation operation is easily performed.
【００３２】[0032]
【実施例】以下実施例に基づき本発明を具体的に説明す
る。 （金属製シャフト）金属製シャフトとして、機械構造用
炭素鋼ＳＴＫＭ１７Ｃを使用した図２に示す形状の長さ
９３０ｍｍ、肉厚約０．３１ｍｍ、重量９２ｇのスチー
ルシャフトを用意した。このシャフトの素材は引張り強
さが６７０ＭＰａ、降伏点応力が５００ＭＰａ、伸びが
１５％であった。The present invention will be specifically described below with reference to examples. (Metal Shaft) As a metal shaft, a steel shaft having a length of 930 mm, a wall thickness of about 0.31 mm, and a weight of 92 g using carbon steel STKM17C for machine structure was prepared. The material of this shaft had a tensile strength of 670 MPa, a yield point stress of 500 MPa, and an elongation of 15%.
【００３３】（中間樹脂層形成用樹脂１）市販のエポキ
シ系フィルム接着剤ＮＢ１０２Ｄ １０６ ０．０２０ｐ
ｓｆ（ＮＥＷＰＯＲＴ ＡＤＨＥＳＩＶＥＳ ＡＮＤ
ＣＯＭＰＯＳＩＴＥＳ社製、目付９８ｇ／ｍ２、厚さ８
０μｍ）を用意した。なお、この接着剤には２５ｇ／ｍ
２のガラス繊維製スクリムクロスが含まれている。剪断
接着強さの平均は２１．７ＭＰａ（接着厚み７３μｍ）
であった。(Intermediate resin layer forming resin 1) Commercially available epoxy film adhesive NB102D 106 0.020p
sf (NEWPORT ADHEIVES AND
COMPOSITES, weight 98g / m 2 , thickness 8
0 μm). In addition, 25 g / m
2 glass fiber scrim cloth. The average of the shear bond strength is 21.7 MPa (bond thickness 73 μm)
Met.
【００３４】（中間樹脂層形成用樹脂２）市販の２液型
接着剤セメダインＥＰ−００１（セメダイン社製）を用
意した。剪断接着強さの平均は８ＭＰａ（接着厚み５０
μｍ）であった。(Intermediate Resin Layer Forming Resin 2) A commercially available two-part adhesive Cemedine EP-001 (manufactured by Cemedine) was prepared. The average shear adhesive strength is 8 MPa (adhesive thickness 50
μm).
【００３５】（中間樹脂層形成用樹脂３）市販のエポキ
シ系フィルム接着剤ＮＢ１０１ ＨＣ ０．０８５ｐｓ
ｆ（目付：４１８ｇ／ｍ２、厚さ約３４８μｍ、キャリ
アーは１７ｇ／ｍ２のナイロン不織布）を用意した。剪
断接着強さの平均は２２．４ＭＰａ（接着厚み２１０μ
ｍ）であった。(Intermediate resin layer forming resin 3) Commercially available epoxy film adhesive NB101 HC 0.085 ps
f (basis weight: 418g / m 2, a thickness of about 348μm, carriers nylon nonwoven 17 g / m 2) was prepared. The average of the shear bond strength is 22.4 MPa (bond thickness 210 μm).
m).
【００３６】（中間樹脂層形成樹脂４）ビスフェノール
Ａ型エポキシ樹脂６０％、硬化剤５％、溶剤（メチルエ
チルケトン）３５％を混合して調製したラッカーを用意
した。剪断接着強さの平均は、４ＭＰａ（接着厚み２０
μｍ）であった。(Intermediate Resin Layer Forming Resin 4) A lacquer prepared by mixing 60% of a bisphenol A type epoxy resin, 5% of a curing agent, and 35% of a solvent (methyl ethyl ketone) was prepared. The average of the shear bond strength is 4 MPa (bond thickness 20
μm).
【００３７】（繊維強化樹脂層形成用中間材料）繊維強
化樹脂層形成用中間材料として、市販の炭素繊維プリプ
レグＴＲ３４０Ｅ１５０Ｓ（三菱レイヨン社製、目付２
１４ｇ／ｍ２、樹脂含有率３０wt％）を用意した。な
お、本プリプレグに使用されている炭素繊維はＴＲ５０
Ｓ（弾性率２４０ＧＰａ）であり、マトリックス樹脂は
エポキシ樹脂＃３４０である。(Intermediate Material for Forming Fiber Reinforced Resin Layer) As an intermediate material for forming a fiber reinforced resin layer, commercially available carbon fiber prepreg TR340E150S (manufactured by Mitsubishi Rayon Co., Ltd., having a basis weight of 2)
14 g / m 2 , resin content 30 wt%). The carbon fiber used in the prepreg was TR50.
S (elastic modulus 240 GPa), and the matrix resin is epoxy resin # 340.
【００３８】（剪断接着強さ測定方法） １）金属シャフトと同材質金属板及び繊維強化樹脂層と
同材質の繊維強化樹脂板を幅２５ｍｍ、長さ１００ｍ
ｍ、厚さ２．２ｍｍの大きさにそれぞれ切り出した。 ２）両者の接着部分を＃４００のサンドペーパー研磨
し、次いでメチルエチルケトンで脱脂し、両端１２．５
ｍｍが重なり合うように中間樹脂層を形成する樹脂で両
者を接着圧１ｋｇｆ／ ｃｍ２、１２０℃で３０分で接
着して、剪断接着強さ測定用試験片（ＪＩＳ Ｋ ６８
５０）５ケを作製した。 ３）作製した試験片で引張り速度２ｍｍ／分で引張り試
験を行い、５つの測定結果の平均値を求め、剪断接着強
さとした。(Method of Measuring Shear Bond Strength) 1) A metal plate made of the same material as the metal shaft and a fiber reinforced resin plate made of the same material as the fiber reinforced resin layer are 25 mm wide and 100 m long.
m and a size of 2.2 mm in thickness. 2) The bonded portion of both was polished with # 400 sandpaper, then degreased with methyl ethyl ketone, and 12.5
The two are bonded together at a bonding pressure of 1 kgf / cm 2 at 120 ° C. for 30 minutes using a resin forming an intermediate resin layer such that the mm overlaps each other, and a test piece for measuring the shear bond strength (JIS K 68)
50) Five samples were produced. 3) A tensile test was performed at a tensile speed of 2 mm / min on the prepared test piece, and an average value of the five measurement results was obtained, which was defined as a shear bond strength.
【００３９】（シャフトの曲げ試験）ゴルフクラブ用シ
ャフトの３点曲げ強力は、製品安全協会策定のゴルフク
ラブ用シャフトの認定基準及び基準確認方法（通称産業
大臣承認５産第２０８７号・平成５年１０月４日）のう
ち、先端より１７５mmの位置（いわゆるＡ点）と先端よ
り５２５ｍｍの位置（いわゆるＢ点）の測定方法に従っ
て測定を行った。(Shaft bending test) The three-point bending strength of a golf club shaft is determined by a certification standard and a standard confirmation method for a golf club shaft formulated by the Japan Product Safety Association (commonly approved by the Minister of Industry, No. 5, No. 2087, 1993) (October 4), the measurement was performed according to the measurement method at a position 175 mm from the tip (so-called point A) and a position 525 mm from the tip (so-called point B).
【００４０】なお、製作したスチール・炭素繊維強化プ
ラスチック複合シャフトはチップ側先端より５２５ｍｍ
の位置まで炭素繊維強化樹脂で被覆されているのでＢ点
の曲げ試験においては３点曲げの押さえ圧子がスチール
と繊維強化プラスチック層の境界に接触した。The manufactured steel / carbon fiber reinforced plastic composite shaft is 525 mm from the tip on the tip side.
In the bending test at the point B, the pressing indenter of the three-point bending contacted the boundary between the steel and the fiber-reinforced plastic layer in the bending test at the point B.
【００４１】（実施例１）図１に示す金属製シャフトの
先端（ａ部）から５２５ｍｍの位置（ｂ部）までを研磨
布が＃４００の回転式研磨機を用いて研磨し、メチルエ
チルケトンで清浄して金属製シャフトを調製した。(Example 1) A polishing cloth was polished from a tip (a) of the metal shaft shown in FIG. 1 to a position (b) of 525 mm using a rotary polishing machine of # 400 and cleaned with methyl ethyl ketone. Thus, a metal shaft was prepared.
【００４２】これにａ部からｂ部にわたって、中間樹脂
層形成用樹脂１を１層巻きつけ、さらに、その上に繊維
強化樹脂層形成用炭素繊維プリプレグを１層巻き付け
た。これを厚さ３０μｍ、幅２０ｍｍのポリプロピレン
製ラッピングテープ（三菱レイヨン社製商品名：ミレフ
ァン）を張力４ｋｇｆ下、テープピッチ１．５ｍｍで巻
き付け固定し、１２０℃で２時間の処理でプリプレグ、
接着剤を硬化処理した。得られたシャフトはラッピング
テープを除去し、表面研磨を施し、重量１０５ｇのアイ
アン用ゴルフクラブシャフトを得た。One layer of the resin 1 for forming the intermediate resin layer was wound around the part a to part b, and one layer of carbon fiber prepreg for forming the fiber reinforced resin layer was further wound thereon. This was wrapped with a polypropylene wrapping tape (Mirfan, trade name, manufactured by Mitsubishi Rayon Co., Ltd.) having a thickness of 30 μm and a width of 20 mm, and wound and fixed at a tape pitch of 1.5 mm under a tension of 4 kgf. The prepreg was treated at 120 ° C. for 2 hours.
The adhesive was cured. The obtained shaft was subjected to removal of wrapping tape and surface polishing to obtain a golf club shaft for iron having a weight of 105 g.
【００４３】なお、得られたシャフトの表面を観察した
ところ炭素繊維が硬化中の樹脂の粘度低下に流動して繊
維が乱れる現象（繊維蛇行）は認められなかった。When the surface of the obtained shaft was observed, no phenomenon (fiber meandering) was observed in which the carbon fibers flowed due to the decrease in the viscosity of the resin being cured and the fibers were disturbed.
【００４４】又、金属製シャフトと炭素繊維強化樹脂層
が複合されている部分のシャフト断面を金属顕微鏡（ニ
コン社製、エピフォトＴＭＥ型）で観察したところ、接
着剤層の厚さは約７５μｍであった。When the section of the shaft where the metal shaft and the carbon fiber reinforced resin layer were combined was observed with a metallographic microscope (Nikon Corporation, Epiphoto TME type), the thickness of the adhesive layer was about 75 μm. there were.
【００４５】さらにこのシャフトをアイアンクラブに組
み立てたところ、先端より５２５ｍｍの範囲まで炭素繊
維強化樹脂層で被覆され、残る手元側（グリップ側）は
金属製シャフトが露出しており、手に伝わるフィーリン
グ（打感）がスチールシャフトに近い触感が得られた。Further, when this shaft was assembled into an iron club, it was covered with a carbon fiber reinforced resin layer to a range of 525 mm from the tip, and the metal shaft was exposed on the remaining hand side (grip side), so that the hand transmitted to the hand. A tactile sensation close to that of a steel shaft was obtained.
【００４６】曲げ試験で得られたゴルフクラブ用シャフ
トの曲げ強度は、Ａ点で１１０７Ｎ、Ｂ点においては金
属製シャフトと炭素繊維強化樹脂層が剥離する前に７９
７Ｎで圧子下で潰れるように破壊した。The bending strength of the golf club shaft obtained in the bending test was 1107 N at point A, and 79 points at point B before the metal shaft and the carbon fiber reinforced resin layer were separated.
At 7N, it was broken so as to be crushed under an indenter.
【００４７】（実施例２）実施例１と同様の前処理を行
なった後、所定の配合比で混合した中間樹脂層形成用樹
脂２をａ部からｂ部までへらで塗布し、その上に繊維強
化樹脂層形成用炭素繊維プリプレグ１層をａ部からｂ部
まで巻き付けた。これを実施例１と同じくテーピングし
て室温で１時間放置した。その後１２０℃で２時間処理
をしてプリプレグを硬化し、実施例と同様にしてゴルフ
クラブ用シャフトを得た。なお、得られたシャフトには
繊維蛇行はほとんど認められず、接着剤層の厚さは部位
によりややばらつきがあり２０μｍ〜８０μｍであっ
た。(Example 2) After performing the same pretreatment as in Example 1, a resin 2 for forming an intermediate resin layer mixed at a predetermined compounding ratio is applied with a spatula from part a to part b. One layer of a carbon fiber prepreg for forming a fiber reinforced resin layer was wound from the portion a to the portion b. This was taped in the same manner as in Example 1 and left at room temperature for 1 hour. Thereafter, the prepreg was cured at 120 ° C. for 2 hours to obtain a golf club shaft in the same manner as in the example. In addition, meandering of the fiber was hardly observed in the obtained shaft, and the thickness of the adhesive layer was slightly varied from part to part, and was 20 μm to 80 μm.
【００４８】得られたシャフトの曲げ強度はＡ点で１０
７８Ｎ、Ｂ点ではスチールと炭素繊維強化プラスチック
層が剥離する前に７９７Ｎで圧子下でシャフトが潰れる
ように破壊した。The bending strength of the obtained shaft was 10 at the point A.
At 78N and B, the shaft was broken under an indenter at 797N before the steel and carbon fiber reinforced plastic layer were separated.
【００４９】（比較例１）中間樹脂層形成樹脂として中
間樹脂層形成樹脂３を用いるほかは、実施例１と同様に
してゴルフクラブ用シャフトを製作した。得られたゴル
フクラブ用シャフトの断面観察しところ接着層の厚さは
約３４０μｍであった。炭素繊維強化樹脂層には、多数
繊維蛇行が発生しており、実施例１と同じ方法で実施し
たシャフトの曲げ試験の強度はＡ点で７８４Ｎ、Ｂ点に
おいては圧子下でスチールと繊維強化樹脂層が剥離する
前にシャフトが潰れるように破壊し、強度は８０２Ｎで
あった。Comparative Example 1 A golf club shaft was manufactured in the same manner as in Example 1 except that the intermediate resin layer forming resin 3 was used as the intermediate resin layer forming resin. When the cross section of the obtained golf club shaft was observed, the thickness of the adhesive layer was about 340 μm. In the carbon fiber reinforced resin layer, a large number of fiber meanders are generated, and the strength of the shaft bending test performed in the same manner as in Example 1 is 784 N at point A, and steel and fiber reinforced resin at point B under an indenter. The shaft was crushed before the layers were peeled, and the strength was 802N.
【００５０】（比較例２）中間樹脂層形成樹脂として中
間樹脂層形成樹脂４を用いるほかは、実施例１と同様に
してゴルフクラブ用シャフトを製作した。ただし、中間
樹脂層形成樹脂４を金属製シャフトに塗布した後、繊維
強化樹脂層を形成する前に、室温で溶剤を十分乾燥し、
１２０℃で３０分処理した。得られたシャフトには繊維
蛇行はほとんど認められず、接着剤層の厚さは約２０μ
ｍであった。Comparative Example 2 A golf club shaft was manufactured in the same manner as in Example 1 except that the intermediate resin layer forming resin 4 was used as the intermediate resin layer forming resin. However, after applying the intermediate resin layer forming resin 4 to the metal shaft, before forming the fiber reinforced resin layer, the solvent is sufficiently dried at room temperature,
The treatment was performed at 120 ° C. for 30 minutes. Almost no fiber meandering was observed in the obtained shaft, and the thickness of the adhesive layer was about 20 μm.
m.
【００５１】曲げ試験を実施したところ、Ａ点の強度は
９８０Ｎ、Ｂ点の強度は６８６Ｎで金属製シャフトと炭
素繊維強化樹脂層の間で剥離した。When a bending test was carried out, the strength at point A was 980 N and the strength at point B was 686 N, and peeled between the metal shaft and the carbon fiber reinforced resin layer.
【００５２】[0052]
【表１】 [Table 1]
【００５３】[0053]
【発明の効果】本発明によれば、強度特性、フィーリン
グ特性に優れたゴルフクラブ用シャフトを容易に提供で
きる。According to the present invention, a golf club shaft excellent in strength characteristics and feeling characteristics can be easily provided.
【図１】 本発明のゴルフシャフト断面の構成図であ
る。FIG. 1 is a configuration diagram of a cross section of a golf shaft of the present invention.
【図２】 実施例に用いた金属製シャフトの形状図であ
る。FIG. 2 is a diagram showing a shape of a metal shaft used in Examples.
１ 金属製シャフト ２ 中間樹脂層 ３ 繊維強化樹脂層 DESCRIPTION OF SYMBOLS 1 Metal shaft 2 Intermediate resin layer 3 Fiber reinforced resin layer
フロントページの続き (72)発明者 伊吹 努 愛知県豊橋市牛川通四丁目１番地の２ エ ムアールシーコンポジットプロダクツ株式 会社内 Ｆターム(参考） 2C002 AA05 CS03 MM02 MM04 PP01 PP02 Continuing from the front page (72) Inventor Tsutomu Ibuki 4M-1 Ushikawa-dori, Toyohashi-shi, Aichi 2M RC Composite Products Co., Ltd. F-term (reference) 2C002 AA05 CS03 MM02 MM04 PP01 PP02
Claims (10)
層を設けたゴルフクラブ用シャフトにおいて、前記金属
製シャフトと繊維強化樹脂層とが、以下の方法により測
定される剪断接着強さが５ＭＰａ以上の樹脂からなり、
１０〜１００μｍの厚さを有する中間樹脂層を介して一
体化されていることを特徴とするゴルフクラブ用シャフ
ト。 剪断接着強さ測定方法 １）金属シャフトと同材質金属板及び繊維強化樹脂層と
同材質の繊維強化樹脂板を幅２５ｍｍ、長さ１００ｍ
ｍ、厚さ２．２ｍｍの大きさにそれぞれ切り出す。 ２）両者の接着部分を＃４００のサンドペーパー研磨
し、次いでメチルエチルケトンで脱脂し、両端１２．５
ｍｍが重なり合うように中間樹脂層を形成する樹脂で両
者を接着圧１ｋｇｆ／ ｃｍ２、１２０℃で３０分で接
着して、剪断接着強さ測定用試験片（ＪＩＳ Ｋ ６８
５０）５ヶを作製する。 ３）作製した試験片で引張り速度２ｍｍ／分で引張り試
験を行い、５つの測定結果の平均値を求め、剪断接着強
さとする。1. A golf club shaft comprising a metal shaft and a fiber reinforced resin layer provided on an outer surface thereof, wherein the metal shaft and the fiber reinforced resin layer have a shear bond strength of 5 MPa as measured by the following method. Consisting of the above resin,
A shaft for a golf club, which is integrated via an intermediate resin layer having a thickness of 10 to 100 μm. Method of measuring shear adhesive strength 1) A metal plate made of the same material as the metal shaft and a fiber reinforced resin plate made of the same material as the fiber reinforced resin layer are 25 mm wide and 100 m long.
m, and cut out to a size of 2.2 mm in thickness. 2) The bonded portion of both was sanded with # 400 sandpaper, then degreased with methyl ethyl ketone, and 12.5
The two are bonded together at a bonding pressure of 1 kgf / cm 2 at 120 ° C. for 30 minutes using a resin forming an intermediate resin layer such that the mm overlaps each other, and a test piece for measuring the shear bond strength (JIS K 68)
50) Produce 5 pieces. 3) A tensile test is performed on the prepared test piece at a tensile speed of 2 mm / min.
有機合成繊維のいずれかを含む請求項１記載のゴルフク
ラブ用シャフト。2. Glass fiber, carbon fiber,
2. The golf club shaft according to claim 1, wherein the shaft includes one of organic synthetic fibers.
以上、引張破断伸度１０％以上である金属素材を用い
た、重量７０〜１１５ｇの金属シャフトである請求項１
又は２記載のゴルフクラブ用シャフト。3. The metal shaft has a tensile strength of 400 MPa.
The metal shaft having a weight of 70 to 115 g using a metal material having a tensile elongation at break of 10% or more.
Or a shaft for a golf club according to 2.
張弾性率５０〜６００ＧＰａの炭素繊維である請求項１
〜３のいずれか１項記載のゴルフクラブ用シャフト。4. The reinforcing fiber for reinforcing the fiber-reinforced resin layer is a carbon fiber having a tensile modulus of 50 to 600 GPa.
The golf club shaft according to any one of claims 1 to 3.
樹脂層が設けられている請求項１〜４のいずれか１項記
載のゴルフクラブ用シャフト。5. The golf club shaft according to claim 1, wherein a fiber reinforced resin layer is provided over the entire length of the metal shaft.
化樹脂層が設けられている請求項１〜４のいずれか１項
記載のゴルフクラブ用シャフト。6. The golf club shaft according to claim 1, wherein a fiber reinforced resin layer is provided except for a hand portion of the metal shaft.
化樹脂層が設けられている請求項１〜４のいずれか１項
記載のゴルフクラブ用シャフト。7. The golf club shaft according to claim 1, wherein a fiber reinforced resin layer is provided except for a tip portion of the metal shaft.
〜１１０μｍのフィルム状接着剤を貼付し、その上に繊
維強化樹脂中間材料を巻き付け、加熱硬化するゴルフク
ラブ用シャフトの製造方法。8. The outer surface of the metal shaft has a thickness of 10 mm.
A method for manufacturing a golf club shaft in which a film-like adhesive having a thickness of about 110 μm is adhered, and a fiber-reinforced resin intermediate material is wound thereon, and then heated and cured.
維、又は、合成繊維からなる担持材を含む請求項８記載
のゴルフクラブ用シャフトの製造方法。9. The method for manufacturing a shaft for a golf club according to claim 8, wherein the film adhesive contains a support material made of glass fiber, carbon fiber, or synthetic fiber.
０〜１１０μｍになるように室温硬化型の接着剤の層を
形成し、次いで繊維強化樹脂中間材料を巻き付け、室温
で接着剤を硬化し、さらに繊維強化樹脂中間材料の硬化
温度で加熱硬化するゴルフクラブ用シャフトの製造方
法。10. The metal shaft has an outer surface with a thickness of 1 mm.
A golf ball in which a room-temperature-curable adhesive layer is formed so as to have a thickness of 0 to 110 μm, and then a fiber-reinforced resin intermediate material is wound, the adhesive is cured at room temperature, and heat-cured at the curing temperature of the fiber-reinforced resin intermediate material. Manufacturing method of club shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001054127A JP2002253715A (en) | 2001-02-28 | 2001-02-28 | Shaft for golf club |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001054127A JP2002253715A (en) | 2001-02-28 | 2001-02-28 | Shaft for golf club |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002253715A true JP2002253715A (en) | 2002-09-10 |
Family
ID=18914502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001054127A Pending JP2002253715A (en) | 2001-02-28 | 2001-02-28 | Shaft for golf club |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002253715A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011065435A1 (en) * | 2009-11-30 | 2011-06-03 | Ｊｘ日鉱日石エネルギー株式会社 | Robot hand and method for manufacturing same |
| JP6259961B1 (en) * | 2017-06-14 | 2018-01-10 | 藤倉ゴム工業株式会社 | Golf club and coupling member of golf club shaft and golf club head |
| WO2018235475A1 (en) * | 2017-06-23 | 2018-12-27 | 日本発條株式会社 | Golf shaft |
| JP2020146268A (en) * | 2019-03-14 | 2020-09-17 | グローブライド株式会社 | Golf club and method for manufacturing shaft of golf club |
| US11148016B2 (en) | 2017-02-28 | 2021-10-19 | Fujikura Composites Inc. | Golf club and combining member of golf club shaft and golf club head |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011065435A1 (en) * | 2009-11-30 | 2011-06-03 | Ｊｘ日鉱日石エネルギー株式会社 | Robot hand and method for manufacturing same |
| US11148016B2 (en) | 2017-02-28 | 2021-10-19 | Fujikura Composites Inc. | Golf club and combining member of golf club shaft and golf club head |
| JP6259961B1 (en) * | 2017-06-14 | 2018-01-10 | 藤倉ゴム工業株式会社 | Golf club and coupling member of golf club shaft and golf club head |
| WO2018229893A1 (en) * | 2017-06-14 | 2018-12-20 | 藤倉ゴム工業株式会社 | Golf club and connecting member for golf club shaft and golf club head |
| US11253754B2 (en) | 2017-06-14 | 2022-02-22 | Fujikura Composites, Inc. | Golf club and connecting member for golf club shaft and golf club head |
| WO2018235475A1 (en) * | 2017-06-23 | 2018-12-27 | 日本発條株式会社 | Golf shaft |
| JP2019005160A (en) * | 2017-06-23 | 2019-01-17 | 日本発條株式会社 | Golf shaft |
| GB2566889A (en) * | 2017-06-23 | 2019-03-27 | Nhk Spring Co Ltd | Golf shaft |
| US10974110B2 (en) | 2017-06-23 | 2021-04-13 | Nhk Spring Co., Ltd. | Golf shaft |
| GB2566889B (en) * | 2017-06-23 | 2022-02-23 | Nhk Spring Co Ltd | Golf shaft |
| JP2020146268A (en) * | 2019-03-14 | 2020-09-17 | グローブライド株式会社 | Golf club and method for manufacturing shaft of golf club |
| JP2022107810A (en) * | 2019-03-14 | 2022-07-22 | グローブライド株式会社 | Golf club |
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