JPH09277389A - Tapered hollow shaft - Google Patents
Tapered hollow shaftInfo
- Publication number
- JPH09277389A JPH09277389A JP8122173A JP12217396A JPH09277389A JP H09277389 A JPH09277389 A JP H09277389A JP 8122173 A JP8122173 A JP 8122173A JP 12217396 A JP12217396 A JP 12217396A JP H09277389 A JPH09277389 A JP H09277389A
- Authority
- JP
- Japan
- Prior art keywords
- prepreg
- elastic modulus
- layer
- shaft
- fiber
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2209/00—Characteristics of used materials
- A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres
Landscapes
- Golf Clubs (AREA)
- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はテーパ付き中空シャ
フトに関する。FIELD OF THE INVENTION The present invention relates to a tapered hollow shaft.
【０００２】[0002]
【従来の技術】一般ゴルファー、特にヘッドスピードが
遅くあまり力のない女性および中高年ゴルファーにとっ
て、ボールインパクト時のヘッドスピードをより向上さ
せるため、曲げ剛性の小さい（フレックスの大きい）シ
ャフトが適しているとされるが、曲げ強度を維持しかつ
フレックスの大きいシャフトはほとんど得られていなか
った。2. Description of the Related Art For general golfers, especially women with a slow head speed and weak strength and middle-aged and elderly golfers, a shaft with a small bending rigidity (a large flex) is suitable for further improving the head speed at the time of ball impact. However, a shaft having a high flexural strength and a large flex was hardly obtained.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、これ
ら従来の課題を解消し、高い曲げ強度および大きなフレ
ックスを有するシャフトを提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve these problems of the prior art and to provide a shaft having high bending strength and large flex.
【０００４】[0004]
【課題を解決するための手段】すなわち、本発明のテー
パ付き中空シャフトは、弾性率が２００ＧＰａ〜１００
０ＧＰａの強化繊維を含む繊維強化複合材料製テーパ付
き中空シャフトであって、該中空シャフトのストレート
層に、弾性率が５〜１５０ＧＰａの炭素繊維を配置した
ことを特徴とする。That is, the taper hollow shaft of the present invention has an elastic modulus of 200 GPa to 100.
A tapered hollow shaft made of a fiber-reinforced composite material containing a reinforcing fiber of 0 GPa, wherein carbon fibers having an elastic modulus of 5 to 150 GPa are arranged in a straight layer of the hollow shaft.
【０００５】[0005]
【発明の実施の形態】本発明において用いられる、弾性
率が２００ＧＰａ〜１０００ＧＰａの強化繊維を含む繊
維強化複合材料製テーパ付き中空シャフトは、通常、斜
交層とストレート層の少なくとも２層から構成される。BEST MODE FOR CARRYING OUT THE INVENTION A tapered hollow shaft made of a fiber-reinforced composite material containing reinforcing fibers having an elastic modulus of 200 GPa to 1000 GPa, which is used in the present invention, is usually composed of at least two layers of an oblique layer and a straight layer. It
【０００６】斜交層に用いるプリプレグとしては、クロ
スプリプレグおよび一方向プリプレグを使用することが
できるが、配向角を制御しやすいため、一方向プリプレ
グが好ましく用いられる。As the prepreg used for the oblique layer, a cross prepreg and a unidirectional prepreg can be used, but a unidirectional prepreg is preferably used because the orientation angle can be easily controlled.
【０００７】このプリプレグに使用される強化繊維とし
ては、引張弾性率が２００ＧＰａ〜１０００ＧＰａ、好
ましくは４００ＧＰａ〜８００ＧＰａのものが用いられ
る。このような強化繊維として、金属繊維、炭化珪素繊
維、アルミナ繊維、ボロン繊維、チタン酸カリウム繊
維、炭素繊維などが用いられ、軽量でかつ高引張弾性率
であることから好ましくは炭素繊維が用いられる。As the reinforcing fibers used in this prepreg, those having a tensile elastic modulus of 200 GPa to 1000 GPa, preferably 400 GPa to 800 GPa are used. As such a reinforcing fiber, a metal fiber, a silicon carbide fiber, an alumina fiber, a boron fiber, a potassium titanate fiber, a carbon fiber or the like is used, and a carbon fiber is preferably used because it is lightweight and has a high tensile elastic modulus. .
【０００８】本発明において、ストレート層に用いるプ
リプレグとしては、一方向プリプレグを好ましく使用す
ることができる。In the present invention, a unidirectional prepreg can be preferably used as the prepreg for the straight layer.
【０００９】ストレート層に用いるプリプレグに使用さ
れる炭素繊維としては、通常、引張弾性率５ＧＰａ〜１
５０ＧＰａ、好ましくは２０〜１５０ＧＰａ、より好ま
しくは２０〜１２０ＧＰａのものが必須成分として用い
られる。５ＧＰａ未満では、満足な曲げ強度、フレック
スが得られず、１５０ＧＰａを越えるとフレックスが小
さくなり好ましくない。The carbon fiber used for the prepreg used for the straight layer is usually a tensile elastic modulus of 5 GPa to 1
50 GPa, preferably 20 to 150 GPa, more preferably 20 to 120 GPa is used as an essential component. If it is less than 5 GPa, satisfactory bending strength and flex cannot be obtained, and if it exceeds 150 GPa, the flex becomes small, which is not preferable.
【００１０】ストレート層の炭素繊維は、曲げ強度を維
持するため通常、引張強度が０．８〜５ＧＰａであるこ
とが好ましく、１〜５ＧＰａであることがより好まし
い。The carbon fiber of the straight layer usually has a tensile strength of preferably 0.8 to 5 GPa, more preferably 1 to 5 GPa in order to maintain bending strength.
【００１１】また、ストレート層の炭素繊維としては、
圧縮による破壊を生じにくいように、圧縮破断歪みが通
常、０．９〜５％、好ましくは１．５〜５％、さらに好
ましくは２〜５％のものを用いることができる。Further, as the carbon fiber of the straight layer,
In order to prevent breakage due to compression, a strain having a compression rupture strain of usually 0.9 to 5%, preferably 1.5 to 5%, more preferably 2 to 5% can be used.
【００１２】このような炭素繊維であれば、ピッチ系炭
素繊維あるいはポリアクリロニトリル（ＰＡＮ）系炭素
繊維のいずれでも用いることができる。As such carbon fibers, either pitch-based carbon fibers or polyacrylonitrile (PAN) -based carbon fibers can be used.
【００１３】また、前記ストレート層に用いる炭素繊維
としては、前記低弾性率の炭素繊維と、弾性率２００〜
４００ＧＰａのより高弾性率の炭素繊維とを組み合わせ
て使用することもできる。As the carbon fibers used for the straight layer, the carbon fibers having the low elastic modulus and the elastic modulus of 200 to 200 are used.
It can also be used in combination with a carbon fiber having a higher elastic modulus of 400 GPa.
【００１４】このとき、低弾性率炭素繊維の、ストレー
ト層全体の炭素繊維に対する組成比は１〜１００体積
％、好ましくは５〜１００体積％とすることができる。At this time, the composition ratio of the low elastic modulus carbon fiber to the carbon fiber of the entire straight layer can be 1 to 100% by volume, preferably 5 to 100% by volume.
【００１５】前記低弾性率の炭素繊維と高弾性率の炭素
繊維を組み合わせた炭素繊維の積層方法としては、混合
して積層する方法あるいは高弾性率の炭素繊維を巻回し
た後に、低弾性率の炭素繊維を積層する方法があるが、
圧縮による破壊が生じにくい後者の方法が好ましく採用
される。As a method for laminating the carbon fibers having a combination of the low elastic modulus carbon fibers and the high elastic modulus carbon fibers, a method of mixing and laminating or a method of winding the high elastic modulus carbon fibers and then low elastic modulus There is a method of laminating the carbon fiber of
The latter method, which is less likely to be broken by compression, is preferably adopted.
【００１６】斜交層およびストレート層にそれぞれ用い
られるプリプレグに使用されるマトリックス樹脂として
は、エポキシ樹脂、不飽和ポリエステル、フェノール樹
脂、シリコーン樹脂、ポリウレタン樹脂、ユリア樹脂、
メラミン樹脂などから選ばれる熱硬化性樹脂が用いら
れ、好ましくはエポキシ樹脂が用いられる。The matrix resin used in the prepreg used in each of the oblique layer and the straight layer includes epoxy resin, unsaturated polyester, phenol resin, silicone resin, polyurethane resin, urea resin,
A thermosetting resin selected from melamine resins and the like is used, and an epoxy resin is preferably used.
【００１７】これらのプリプレグの目付は通常、３０〜
１８０ｇ／ｍ2 、好ましくは５０〜１５０ｇ／ｍ2 の範
囲のものを用いることができる。The basis weight of these prepregs is usually 30-
180 g / m 2, preferably can be used in the range of 50 to 150 g / m 2.
【００１８】プリプレグの目付がこの範囲より大きい
と、シャフト重量設計における自由度が制限されるう
え、ゴルフクラブシャフト製造時におけるプリプレグの
マンドレルへの巻き付き性も劣るなどの弊害が生じやす
いため好ましくない。When the basis weight of the prepreg is larger than this range, the degree of freedom in designing the weight of the shaft is limited, and the prepreg is less likely to be wound around the mandrel when the golf club shaft is manufactured, which is not preferable.
【００１９】本発明においてシャフト太径側から細径側
にかけて左巻き即ち左ネジ方向に積層するプリプレグを
正の斜交層、右巻き即ち右ネジ方向に積層するプリプレ
グを負の斜交層とする。In the present invention, the prepreg laminated in the left winding direction, that is, the left screw direction from the large diameter side to the small diameter side of the shaft is a positive oblique layer, and the prepreg laminated in the right winding direction, that is, the right screw direction is a negative oblique layer.
【００２０】正の斜交層は強化繊維の配向がシャフト軸
方向に対して１５°〜７５°、好ましくは２０°〜６０
°、より好ましくは３０°〜５０°になるように積層す
ることができる。In the positive oblique layer, the orientation of the reinforcing fibers is 15 ° to 75 ° with respect to the axial direction of the shaft, preferably 20 ° to 60 °.
The layers can be laminated at an angle of 0 °, more preferably 30 ° to 50 °.
【００２１】負の斜交層は強化繊維が正の斜交層と交差
するように配向しており、シャフト軸方向に対して−１
５°〜−７５°、好ましくは−２０°〜−６０°、より
好ましくは−３０°〜−５０°になるように積層するこ
とができる。正負一組の斜交層の積層数は通常、１〜１
０層、好ましくは２〜８層である。The negative oblique layer is oriented so that the reinforcing fibers intersect the positive oblique layer, and is -1 with respect to the axial direction of the shaft.
The layers can be laminated at 5 ° to −75 °, preferably −20 ° to −60 °, and more preferably −30 ° to −50 °. The number of positive and negative pairs of oblique layers is usually 1 to 1
There are 0 layers, preferably 2 to 8 layers.
【００２２】ここで、本発明でいう積層数とは斜交層な
ど特定の層が平均して何層積層しているか即ちシャフト
の周りを何回巻回しているかを意味しており、積層数が
小数ということも有り得る。Here, the number of layers in the present invention means how many layers a specific layer such as an oblique layer is laminated on average, that is, how many times it is wound around the shaft. Can be a decimal.
【００２３】本発明におけるストレート層は、強化繊維
の配向がシャフト軸方向に対して通常、０°〜±５°に
なるように積層することができる。ストレート層の積層
数は通常、１〜１０層、好ましくは２〜８層である。ス
トレート層の積層厚さは、太径部と細径部で異なっても
よいが一定であることもできる。The straight layer in the present invention can be laminated so that the orientation of the reinforcing fibers is usually 0 ° to ± 5 ° with respect to the axial direction of the shaft. The number of stacked straight layers is usually 1 to 10 layers, preferably 2 to 8 layers. The laminated thickness of the straight layer may be different between the large diameter portion and the small diameter portion, but may be constant.
【００２４】[0024]
【実施例】以下に実施例を示すが本発明はこれにより限
定されるものではない。なお、本発明におけるフレック
スの測定方法は社団法人日本ゴルフ用品協会のフレック
ス測定標準機を使用し、シャフトを水平にして荷重点か
ら２５ｍｍ支点側に寄ったところの荷重前後の変位を測
定した。EXAMPLES Examples will be shown below, but the present invention is not limited thereto. The flex measuring method in the present invention uses a flex measuring standard machine of Japan Golf Equipment Association, and the displacement before and after the load is measured when the shaft is horizontal and the load is closer to the 25 mm fulcrum side.
【００２５】順式フレックス測定の設定方法の場合、荷
重は２．７ｋｇ、荷重位置は細径側先端から２０ｍｍの
位置であり、シャフトの固定方法はシャフト太径端側か
ら５７ｍｍの位置を上から、シャフト太径端側から１９
７ｍｍの位置を下から支持した。In the case of the setting method of the forward flex measurement, the load is 2.7 kg, the load position is 20 mm from the tip of the small diameter side, and the method of fixing the shaft is 57 mm from the side of the shaft large diameter from the top. , 19 from the large diameter end of the shaft
The 7 mm position was supported from below.
【００２６】逆式フレックス測定の設定方法の場合、荷
重は１．５ｋｇ、荷重位置は太径側先端から５７ｍｍの
位置であり、シャフトの固定方法はシャフト細径端側か
ら２０ｍｍの位置を上から、シャフト細径端側から１６
０ｍｍの位置を下から支持した。（逆式フレックス）−
（順式フレックス）の値、即ちフレックスの差が大きけ
れば先調子のシャフトと定義する。In the case of the reverse flex measurement setting method, the load is 1.5 kg, the load position is 57 mm from the tip on the large diameter side, and the shaft is fixed from 20 mm from the small diameter end side from the top. , From the small end of the shaft 16
The 0 mm position was supported from below. (Reverse flex)-
If the value of (forward flex) is large, that is, the difference in flex is large, it is defined as a shaft with a smooth tone.
【００２７】実施例１ 図１においては、マンドレル、各層に用いるプリプレグ
の裁断形状および最終の積層構成断面図を模式的に表し
た。図中、１はマンドレル、２は斜交層、３はストレー
ト層を示す。なお本実施例では、マンドレルに、斜交
層、ストレート層の順に積層しているが、ストレート
層、斜交層の順に積層してもよい。 Example 1 In FIG. 1, the mandrel, the cutting shape of the prepreg used for each layer, and the final sectional view of the laminated constitution are schematically shown. In the figure, 1 is a mandrel, 2 is an oblique layer, and 3 is a straight layer. In this embodiment, the oblique layer and the straight layer are laminated in this order on the mandrel, but the straight layer and the oblique layer may be laminated in this order.
【００２８】斜交層として日本グラファイトファイバー
（株）製Ｅ５０２６Ｅ−１２（ピッチ系炭素繊維、引張
弾性率５００ＧＰａ、炭素繊維目付１２５ｇ／ｍ2 、エ
ポキシ樹脂含有量２７．５ｗｔ％）を使用した。E5026E-12 (pitch-based carbon fiber, tensile elastic modulus 500 GPa, carbon fiber basis weight 125 g / m 2 , epoxy resin content 27.5 wt%) manufactured by Nippon Graphite Fiber Co., Ltd. was used as the oblique layer.
【００２９】斜交層の炭素繊維が、シャフト軸方向に対
して±４５°に配向して、正負の斜交層がそれぞれマン
ドレル上を均一に３回ずつ巻回するように裁断したプリ
プレグを使用した。この２枚のプリプレグを半周分上下
にずらして重ねた後、マンドレル上に積層した。A carbon fiber of the oblique layer is oriented at ± 45 ° with respect to the axial direction of the shaft, and a prepreg cut so that the positive and negative oblique layers are uniformly wound three times on the mandrel is used. did. The two prepregs were vertically overlapped with each other by half a circumference, and then laminated, and then laminated on a mandrel.
【００３０】ストレート層として日本グラファイトファ
イバー（株）製Ｅ１０２６Ｅ−１２（ピッチ系炭素繊
維、引張弾性率１００ＧＰａ、炭素繊維目付１２５ｇ／
ｍ2 、エポキシ樹脂含有量２７．５ｗｔ％）を使用し
た。As a straight layer, E1026E-12 manufactured by Nippon Graphite Fiber KK (pitch-based carbon fiber, tensile elastic modulus 100 GPa, carbon fiber basis weight 125 g /
m 2 and epoxy resin content 27.5 wt%) were used.
【００３１】ストレート層には、炭素繊維方向がシャフ
ト軸方向に対して実質平行になるように配向して、それ
ぞれマンドレル上を均一に２．５回ずつ巻回するように
裁断したプリプレグを２枚使用した。この２枚のプリプ
レグを半周分上下にずらして重ねた後、斜交層上に積層
した。The straight layer has two prepregs which are oriented so that the carbon fiber direction is substantially parallel to the shaft axis direction and are cut so as to wind uniformly on the mandrel 2.5 times each. used. The two prepregs were vertically overlapped with each other by half the circumference, and then laminated on the oblique layer.
【００３２】この積層体にシュリンクテープを巻き、１
３０℃に加熱して脱泡硬化した。できあがったシャフト
の全長は１１４５ｍｍ、細径端の内径は６．４ｍｍ、外
径は８．５ｍｍであり、太径端の内径は１３．３ｍｍ、
外径は１５．３ｍｍとなった。表１に示すように実施例
１のシャフトは、高い曲げ強度および大きなフレックス
を有していた。Wrap shrink tape around this laminate, and
It was heated to 30 ° C. and defoamed and cured. The resulting shaft has a total length of 1145 mm, a small diameter end has an inner diameter of 6.4 mm, an outer diameter of 8.5 mm, and a large diameter end has an inner diameter of 13.3 mm.
The outer diameter was 15.3 mm. As shown in Table 1, the shaft of Example 1 had high bending strength and large flex.
【００３３】実施例２ ストレート層として日本グラファイトファイバー（株）
製Ｅ１５２６Ｅ−１２（ピッチ系炭素繊維、引張弾性率
１５０ＧＰａ、炭素繊維目付１２５ｇ／ｍ2 、エポキシ
樹脂含有量２７．５ｗｔ％）を１枚使用して５層巻回し
た以外は実施例１と同様にシャフトを製造した。表１に
示すように実施例２のシャフトは、高い曲げ強度および
大きなフレックスを有していた。 Example 2 Nippon Graphite Fiber Co., Ltd. as a straight layer
The same as Example 1 except that E1526E-12 (pitch-based carbon fiber, tensile elastic modulus 150 GPa, carbon fiber basis weight 125 g / m 2 , epoxy resin content 27.5 wt%) manufactured by E1526E-12 was used to wind 5 layers. Manufactured the shaft. As shown in Table 1, the shaft of Example 2 had high flexural strength and large flex.
【００３４】実施例３ ストレート層として東レ（株）製プリプレグＰ３０５２
Ｓ−１２（ＰＡＮ系炭素繊維、引張弾性率２４０ＧＰ
ａ、炭素繊維目付１２５ｇ／ｍ2 、エポキシ樹脂含有量
２７．５ｗｔ％）を１枚使用しプリプレグの積層数が２
層になるように切り出してマンドレルに巻き付けさらに
第２のストレート層として日本グラファイトファイバー
（株）製Ｅ０５２６Ｅ−１２（ピッチ系炭素繊維、引張
弾性率５０ＧＰａ、炭素繊維目付１２５ｇ／ｍ2 、エポ
キシ樹脂含有量２７．５ｗｔ％）を３層巻回した以外は
実施例１と同様にシャフトを製造した。表１に示すよう
に実施例３のシャフトは高い曲げ強度および大きなフレ
ックスを有していた。比較例１ ストレート層として東レ（株）製プリプレグＰ３０５２
Ｓ−１２を１枚使用して５層巻回した以外は実施例１と
同様にシャフトを製造した。表１に示すように比較例１
のシャフトはフレックスが小さく劣っていた。 Example 3 Prepreg P3052 manufactured by Toray Industries, Inc. as a straight layer
S-12 (PAN-based carbon fiber, tensile elastic modulus 240GP
a, carbon fiber areal weight 125 g / m 2 , epoxy resin content 27.5 wt%) is used, and the number of laminated prepregs is 2
Cut into layers and winded around a mandrel. Further, as a second straight layer, E0526E-12 manufactured by Nippon Graphite Fiber KK (pitch-based carbon fiber, tensile elastic modulus 50 GPa, carbon fiber basis weight 125 g / m 2 , epoxy resin content). A shaft was manufactured in the same manner as in Example 1 except that 3 layers (27.5 wt%) were wound. As shown in Table 1, the shaft of Example 3 had high bending strength and large flex. Comparative Example 1 As a straight layer, prepreg P3052 manufactured by Toray Industries, Inc.
A shaft was produced in the same manner as in Example 1 except that one S-12 was used and five layers were wound. Comparative Example 1 as shown in Table 1
The shaft had a small flex and was inferior.
【００３５】比較例２ ストレート層として東レ（株）製プリプレグＰ３０５２
Ｓ−１２を１枚使用して３層巻回した以外は実施例１と
同様にシャフトを製造した。比較例２のシャフトは曲げ
破断荷重が劣っていた。 Comparative Example 2 As a straight layer, prepreg P3052 manufactured by Toray Industries, Inc.
A shaft was manufactured in the same manner as in Example 1 except that one S-12 was used and three layers were wound. The shaft of Comparative Example 2 was inferior in bending breaking load.
【００３６】比較例３ ストレート層として東レ（株）製プリプレグＰ８０５２
Ｓ−１２（ＰＡＮ系炭素繊維、引張弾性率３００ＧＰ
ａ、炭素繊維目付１２５ｇ／ｍ2 、エポキシ樹脂含有量
３３ｗｔ％）を１枚使用して５層巻回した以外は実施例
１と同様にシャフトを製造した。表１に示すように比較
例３のシャフトはフレックスが小さく劣っていた。 Comparative Example 3 Prepreg P8052 manufactured by Toray Industries, Inc. as a straight layer
S-12 (PAN-based carbon fiber, tensile elastic modulus 300GP
a, a carbon fiber areal weight of 125 g / m 2 , and an epoxy resin content of 33 wt%) were used to manufacture a shaft in the same manner as in Example 1 except that 5 layers were wound. As shown in Table 1, the shaft of Comparative Example 3 had a small flex and was inferior.
【００３７】比較例４ ストレート層として東レ（株）製プリプレグＰ８０５２
Ｓ−１２を１枚使用して２層巻回した以外は実施例１と
同様にシャフトを製造した。比較例４のシャフトは曲げ
破断荷重が劣っていた。結果を表１にまとめて示す。 Comparative Example 4 As a straight layer, prepreg P8052 manufactured by Toray Industries, Inc.
A shaft was manufactured in the same manner as in Example 1 except that one S-12 was used and two layers were wound. The shaft of Comparative Example 4 was inferior in bending breaking load. The results are summarized in Table 1.
【００３８】[0038]
【表１】 [Table 1]
【００３９】[0039]
【発明の効果】以上のように、弾性率５〜１５０ＧＰａ
の炭素繊維をストレート層に用いた本発明のテーパ付き
中空シャフトは、従来のシャフトに比べて高い曲げ強度
および大きなフレックスを有する。As described above, the elastic modulus is 5 to 150 GPa.
The tapered hollow shaft of the present invention in which the carbon fiber of (1) is used for the straight layer has a higher flexural strength and a larger flex than the conventional shaft.
【図１】 マンドレル、各層に用いるプリプレグの裁断
形状および最終の積層構成断面図である。FIG. 1 is a sectional view of a mandrel, a cutting shape of a prepreg used for each layer, and a final laminated structure.
１：マンドレル、２：斜交層、３：ストレート層。 1: Mandrel, 2: Cross layer, 3: Straight layer.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｌ 9:00 23:00 31:52 (72)発明者 竹村 振一 神奈川県横浜市中区千鳥町８番地日本石油 株式会社中央技術研究所内 (72)発明者 大野 秀幸 東京都新宿区西新宿３−５−１日本グラフ ァイトファイバー株式会社内 (72)発明者 荒井 豊 兵庫県姫路市広畑区富士町１番地新日本製 鐵株式会社新素材事業部内 (72)発明者 中西 朋宏 千葉県君津市三直1331−２新日鐵化学社宅─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Reference number within the agency FI Technical display location B29L 9:00 23:00 31:52 (72) Inventor Shinichi Takemura Chidori, Naka-ku, Yokohama-shi, Kanagawa 8th Town Nippon Oil Co., Ltd. Central Research Institute (72) Inventor Hideyuki Ohno 3-5-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Japan Graphite Fiber Co., Ltd. (72) Inventor Yutaka Arai Fujihata, Himeji-shi, Hyogo Prefecture Fuji No. 1 town Shin Nippon Steel Co., Ltd. New Material Division (72) Inventor Tomohiro Nakanishi 1331-2 Sannao, Kimitsu-shi, Chiba Nippon Steel Chemical Co., Ltd.
Claims (1)
の強化繊維を含む繊維強化複合材料製テーパ付き中空シ
ャフトであって、該中空シャフトのストレート層に、弾
性率が５〜１５０ＧＰａの炭素繊維を配置したことを特
徴とするテーパ付き中空シャフト。1. An elastic modulus of 200 GPa to 1000 GPa
A tapered hollow shaft made of a fiber-reinforced composite material containing the reinforcing fiber of claim 1, wherein carbon fibers having an elastic modulus of 5 to 150 GPa are arranged in a straight layer of the hollow shaft.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12217396A JP3296970B2 (en) | 1996-04-19 | 1996-04-19 | Hollow shaft with taper |
| US09/384,385 US6273830B1 (en) | 1996-04-19 | 1999-08-27 | Tapered hollow shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12217396A JP3296970B2 (en) | 1996-04-19 | 1996-04-19 | Hollow shaft with taper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09277389A true JPH09277389A (en) | 1997-10-28 |
| JP3296970B2 JP3296970B2 (en) | 2002-07-02 |
Family
ID=14829386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12217396A Expired - Fee Related JP3296970B2 (en) | 1996-04-19 | 1996-04-19 | Hollow shaft with taper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3296970B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000279558A (en) * | 1999-03-29 | 2000-10-10 | Mizuno Corp | Golf club set and its shaft set |
| JP2002067176A (en) * | 2000-08-29 | 2002-03-05 | Mitsubishi Rayon Co Ltd | Tubular body made of fiber reinforced resin |
| WO2005065785A1 (en) * | 2003-12-26 | 2005-07-21 | Mizuno Corporation | Golf shaft |
| WO2005087992A1 (en) * | 2004-03-11 | 2005-09-22 | Toray Industries, Inc. | Carbon fiber, process for production thereof, prepregs, and golf club shafts |
| JP2006198232A (en) * | 2005-01-21 | 2006-08-03 | Olympus Corp | Flexible tube for endoscope |
| JP2010136908A (en) * | 2008-12-12 | 2010-06-24 | Yokohama Rubber Co Ltd:The | Method of manufacturing golf club shaft |
-
1996
- 1996-04-19 JP JP12217396A patent/JP3296970B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000279558A (en) * | 1999-03-29 | 2000-10-10 | Mizuno Corp | Golf club set and its shaft set |
| JP2002067176A (en) * | 2000-08-29 | 2002-03-05 | Mitsubishi Rayon Co Ltd | Tubular body made of fiber reinforced resin |
| JP4583563B2 (en) * | 2000-08-29 | 2010-11-17 | 三菱レイヨン株式会社 | Tubular body made of fiber reinforced resin |
| WO2005065785A1 (en) * | 2003-12-26 | 2005-07-21 | Mizuno Corporation | Golf shaft |
| WO2005087992A1 (en) * | 2004-03-11 | 2005-09-22 | Toray Industries, Inc. | Carbon fiber, process for production thereof, prepregs, and golf club shafts |
| JP2006198232A (en) * | 2005-01-21 | 2006-08-03 | Olympus Corp | Flexible tube for endoscope |
| JP2010136908A (en) * | 2008-12-12 | 2010-06-24 | Yokohama Rubber Co Ltd:The | Method of manufacturing golf club shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3296970B2 (en) | 2002-07-02 |
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