JPH09117968A - Tube material and production thereof - Google Patents
Tube material and production thereofInfo
- Publication number
- JPH09117968A JPH09117968A JP7300690A JP30069095A JPH09117968A JP H09117968 A JPH09117968 A JP H09117968A JP 7300690 A JP7300690 A JP 7300690A JP 30069095 A JP30069095 A JP 30069095A JP H09117968 A JPH09117968 A JP H09117968A
- Authority
- JP
- Japan
- Prior art keywords
- mandrel
- main body
- frp
- reinforcing
- prepreg
- 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
- A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B49/00—Stringed rackets, e.g. for tennis
- A63B49/02—Frames
- A63B49/10—Frames made of non-metallic materials, other than wood
- A63B49/11—Frames made of non-metallic materials, other than wood with inflatable tubes, e.g. inflatable during fabrication
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- 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、ゴルフクラブ用シ
ャフト等に使用されるＦＲＰ製管材及びその製造方法に
関し、さらに詳述すると、管内の中空部にリブ状の補強
部を設け、曲げ強度、座屈強度の向上を図った管材及び
その製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an FRP pipe material used for a golf club shaft and the like and a method for manufacturing the same. The present invention relates to a pipe material having improved buckling strength and a manufacturing method thereof.
【０００２】[0002]
【従来の技術】近年、ゴルフクラブ用シャフトとして、
カーボン繊維を主たる繊維強化材としたＦＲＰ製のもの
（いわゆるブラックシャフト）が多用されている。この
ＦＲＰ製シャフトは、通常、平行に引き揃えたロービン
グに熱硬化性樹脂を含浸させて得たシート状のプリプレ
グをマンドレルに巻き付け、このプリプレグを加熱硬化
させた後、マンドレルを取り外すことにより製造されて
いる。2. Description of the Related Art In recent years, as a shaft for a golf club,
FRP products (so-called black shafts), which mainly contain carbon fibers as fiber reinforcements, are often used. This FRP shaft is usually manufactured by winding a sheet-like prepreg obtained by impregnating parallel rovings with a thermosetting resin around a mandrel, heating and curing the prepreg, and then removing the mandrel. ing.
【０００３】ゴルフクラブ用シャフトには、曲げ強度、
座屈強度が高いことが要求される。したがって、前述し
たＦＲＰ製シャフトでは、曲げ強度、座屈強度の向上を
図るため、一般に、シャフトの軸方向の一部又は全体に
おいて繊維配向方向がシャフトの軸線と大きい角度をな
すようにプリプレグを巻いたカーボン層（バイアス層）
を肉厚に形成する手段、あるいは、圧縮強度、引張強度
が高い材料からなる層を曲げ強度を強化すべき部分に集
中的に設ける手段が採られている。A golf club shaft has a bending strength,
High buckling strength is required. Therefore, in order to improve the bending strength and the buckling strength of the FRP shaft described above, the prepreg is generally wound so that the fiber orientation direction forms a large angle with the shaft axis of the shaft in a part or the whole of the shaft axial direction. Carbon layer (bias layer)
Is adopted, or a means for providing a layer made of a material having high compressive strength and tensile strength in a concentrated manner at a portion where the bending strength is to be strengthened.
【０００４】前者の手段はカーボン層の肉厚及び繊維配
向方向の設計によって強度向上を図るものであり、後者
の手段は材料の設計によって強度向上を図るものであ
る。しかし、これらの方法では、シャフトの曲げ強度、
座屈強度は、主にカーボン繊維の種類、量及び配向角度
や、高強度材料の種類に依存することになり、強度向上
のための設計の自由度に限界がある。The former measure is intended to improve the strength by designing the thickness of the carbon layer and the fiber orientation direction, and the latter measure is intended to improve the strength by designing the material. However, with these methods, the bending strength of the shaft,
The buckling strength mainly depends on the type, amount and orientation angle of carbon fiber and the type of high strength material, and there is a limit to the degree of freedom in design for improving strength.
【０００５】これに対し、強度向上のための設計の自由
度を高めるべく、シャフト内の中空部を利用してシャフ
トの強度向上を図る手段として、中空部内に補強材を固
定する技術が提案されている（実開昭５３−６２４６４
号）。図５はこの技術を示すもので、図中５２はシャフ
トの管本体、５４は断面十字形に形成されたプラスチッ
ク等からなる補強材、５６は補強材５４を管本体５２の
内壁に固定する接着剤である。On the other hand, in order to increase the degree of freedom in design for improving the strength, a technique of fixing a reinforcing material in the hollow portion has been proposed as a means for improving the strength of the shaft by utilizing the hollow portion in the shaft. It is (actually developed 53-62464
issue). FIG. 5 shows this technique. In the figure, 52 is a pipe body of a shaft, 54 is a reinforcing member made of plastic or the like having a cross-shaped cross section, and 56 is an adhesive for fixing the reinforcing member 54 to the inner wall of the pipe body 52. It is an agent.
【０００６】[0006]
【発明が解決しようとする課題】しかし、図５に示した
ゴルフクラブ用シャフトは、管本体の内壁に接着剤によ
って補強材を接着しているため、下記のような欠点を有
するものであった。 (イ)内壁と補強材との間に接着剤が介在しているので管
本体と補強材との一体性が十分でなく、補強材が強度の
向上に十分寄与しない。したがって、補強材を用いても
所望の曲げ強度、座屈強度を得られないことがある。 (ロ)接着不良によって内壁から補強材が外れ、製品不良
となることがある。 (ハ)管本体の中空部に補強材を挿入し、これを内壁に接
着することによって製造するため、補強材の配設位置に
ばらつきが生じ易く、製品の均一化が難しい。However, the golf club shaft shown in FIG. 5 has the following drawbacks because the reinforcing material is adhered to the inner wall of the tube body with an adhesive. . (A) Since the adhesive is interposed between the inner wall and the reinforcing material, the integrity of the pipe body and the reinforcing material is not sufficient, and the reinforcing material does not contribute sufficiently to the improvement of strength. Therefore, the desired bending strength and buckling strength may not be obtained even if the reinforcing material is used. (B) The reinforcing material may come off from the inner wall due to defective adhesion, resulting in a defective product. (C) Since the reinforcing member is manufactured by inserting the reinforcing member into the hollow portion of the pipe main body and adhering the reinforcing member to the inner wall, it is difficult to make the position of the reinforcing member uneven, and it is difficult to make the product uniform.
【０００７】本発明は、上記事情に鑑みてなされたもの
で、中空部内の補強部と管本体との一体性に優れ、補強
部が強度向上に十分寄与するとともに、内壁から補強部
が外れことがなく、しかも補強部の配設位置にばらつき
が生じることのないＦＲＰ製管材及びその製造方法を提
供することを目的とする。The present invention has been made in view of the above circumstances, and is excellent in the integrity of the reinforcing portion in the hollow portion and the pipe body, the reinforcing portion contributes sufficiently to the improvement of strength, and the reinforcing portion is detached from the inner wall. It is an object of the present invention to provide an FRP pipe material that does not have any variation and does not cause variations in the arrangement position of the reinforcing portion, and a manufacturing method thereof.
【０００８】[0008]
【課題を解決するための手段】本発明は、上記目的を達
成するため、ＦＲＰ製管本体の中空部に該管本体の内壁
間に掛け渡された軸方向に沿うリブ状のＦＲＰ製補強部
が配設され、かつ前記管本体と補強部とが一体に形成さ
れていることを特徴とする管材を提供する。In order to achieve the above-mentioned object, the present invention has a rib-shaped FRP reinforcing portion extending in the axial direction and hung between a hollow portion of an FRP pipe main body and an inner wall of the pipe main body. Is provided, and the pipe body and the reinforcing portion are formed integrally with each other.
【０００９】また、本発明は、ＦＲＰ製管本体の中空部
に該管本体の内壁間に掛け渡された軸方向に沿うリブ状
のＦＲＰ製補強部が配設され、かつ前記管本体と補強部
とが一体に形成された管材の製造方法であって、前記補
強部と対応する形状の空隙部が内部に軸方向に沿って形
成されたマンドレルの該空隙部にプリプレグを挿入し、
さらに前記空隙部に挿入したプリプレグに接触させた状
態でマンドレルにプリプレグを巻き付けた後、これらプ
リプレグを加熱硬化させることを特徴とする管材の製造
方法を提供する。Further, according to the present invention, a rib-shaped FRP reinforcing portion extending along the axial direction and provided between the inner walls of the FRP pipe main body is disposed in the hollow portion of the FRP pipe main body, and the FRP pipe main body is reinforced with the pipe main body. In the method of manufacturing a tubular member integrally formed with a portion, a prepreg is inserted into the void portion of the mandrel in which a void portion having a shape corresponding to the reinforcing portion is formed inside along the axial direction,
Further, the present invention provides a method for producing a pipe material, which comprises winding a prepreg around a mandrel in a state of being in contact with the prepreg inserted in the void and then heating and curing the prepreg.
【００１０】本発明の管材を形成するＦＲＰの種類に限
定はなく、目的に応じて任意の構成のものを用いること
ができる。例えば、繊維強化材としてはカーボン繊維、
ガラス繊維、金属繊維、アラミド繊維、炭化けい素繊
維、アルミナ繊維、ボロン繊維などの１種以上、樹脂と
してはエポキシ樹脂、フェノール樹脂、不飽和ポリエス
テル樹脂等の熱硬化性樹脂、ポリアミド、ポリカーボネ
ート等の熱可塑性樹脂などの１種以上、副資材としては
触媒、促進剤、充填材、離型剤などを用いることができ
る。管材をゴルフクラブ用シャフトとする場合は、繊維
強化材としてカーボン繊維、ボロン繊維、樹脂としてエ
ポキシ樹脂、フェノール樹脂、不飽和ポリエステル樹脂
を用いることが適当であるが、これに限定されるもので
はない。There is no limitation on the type of FRP forming the pipe material of the present invention, and any one having an arbitrary structure can be used according to the purpose. For example, as the fiber reinforcement, carbon fiber,
One or more of glass fiber, metal fiber, aramid fiber, silicon carbide fiber, alumina fiber, boron fiber, etc., as the resin, thermosetting resin such as epoxy resin, phenol resin, unsaturated polyester resin, polyamide, polycarbonate, etc. One or more kinds of thermoplastic resins and the like, and catalysts, accelerators, fillers, release agents, etc. can be used as auxiliary materials. When the tubular member is a golf club shaft, it is suitable to use carbon fiber, boron fiber as the fiber reinforcing material, epoxy resin, phenol resin, or unsaturated polyester resin as the resin, but not limited to this. .
【００１１】本発明の管材において、管本体及び補強部
の形状、大きさは目的に応じて適宜決定することがで
き、例えば管本体は円筒状、楕円筒状、角筒状など、補
強部は断面Ｘ字状、Ｉ字状、Ｙ字状といった任意形状に
形成することができる。また、補強部の配設位置に限定
はなく、管本体の軸方向の一部に設けてもよく、全体に
わたって設けてもよい。管材をゴルフクラブ用シャフト
とする場合は、管本体をややテーパ状をなした円筒状に
形成し、断面Ｘ字状、Ｉ字状、Ｙ字状等の補強部を折れ
やすいシャフトの先端部内やグリップ部内に設けること
が適当であるが、これに限定されるものではない。In the pipe material of the present invention, the shape and size of the pipe body and the reinforcing portion can be appropriately determined according to the purpose. For example, the pipe body has a cylindrical shape, an elliptic cylindrical shape, a rectangular cylindrical shape, or the like, and the reinforcing portion is It can be formed in an arbitrary shape such as an X shape, an I shape, or a Y shape in cross section. In addition, the position where the reinforcing portion is provided is not limited, and the reinforcing portion may be provided at a part in the axial direction of the pipe body, or may be provided over the entire portion. When the tubular member is a golf club shaft, the tubular body is formed in a slightly tapered cylindrical shape, and a reinforcing portion having an X-shaped, I-shaped, or Y-shaped cross section is easily broken in the tip portion of the shaft or It is suitable to be provided in the grip portion, but not limited to this.
【００１２】本発明に係る管材の製造方法では、内部に
補強部と対応する形状の空隙部が形成されたマンドレル
を用いる。かかるマンドレルの作製方法としては、例え
ば、中実マンドレルの端部からその一部又はほぼ全体に
空隙部を軸方向に沿って切削により形成する手段、複数
の分割体を組み合わせて固定することによりマンドレル
が構成されるようにするとともに、各分割体の間に補強
部と対応する形状の軸方向に沿った空隙部が形成される
ようにする手段等を採用することができる。In the method of manufacturing a pipe material according to the present invention, a mandrel in which a void having a shape corresponding to the reinforcing portion is formed is used. Examples of the method for producing such a mandrel include, for example, a means for forming a void along the axial direction from an end of a solid mandrel to a part or almost the whole of the mandrel, and fixing the mandrel by combining a plurality of divided bodies. In addition to the above, it is possible to employ a means or the like for forming a void along the axial direction of a shape corresponding to the reinforcing portion between each divided body.
【００１３】また、本発明の製造方法に用いるプリプレ
グとしては、例えば、平行に引き揃えたロービングやク
ロス、マットといった繊維強化材に熱硬化性樹脂を含浸
させて作製したシート状のものを挙げることができる。The prepreg used in the manufacturing method of the present invention includes, for example, a sheet-shaped one prepared by impregnating a fiber-reinforced material such as rovings, cloths and mats arranged in parallel with a thermosetting resin. You can
【００１４】[0014]
【発明の実施の形態】図１（Ａ）〜（Ｃ）はそれぞれ本
発明に係る管材の好適な実施形態を示すもので、これら
の管材２はゴルフクラブ用シャフトとして使用される。
これら管材２において、４はややテーパ状をなした円筒
状のＦＲＰ製管本体、６は管本体４の中空部に配設され
たＦＲＰ製補強部を示す。補強部６は、管本体４の内壁
間に掛け渡された軸方向に沿うリブ状のもの、すなわち
（Ａ）は断面Ｘ字状（十字状）、（Ｂ）は断面Ｉ字状、
（Ｃ）は断面Ｙ字状のものであり、該補強部６と管本体
４とは一体に形成されている。また、補強部６は、管本
体４の先端部内及びグリップ部内の一方又は両方に配設
されている。図１の管材２の内、例えば断面Ｉ字状の補
強部６を設けた（Ｂ）の管材２では、補強部６を設けな
い管材に比べて曲げ強度が約１５〜２５％、座屈強度が
約２０％向上し、断面Ｘ字状、断面Ｙ字状の補強部６を
設けた（Ａ）、（Ｃ）の管材２では、それ以上に曲げ強
度、座屈強度が向上するものである。1 (A) to 1 (C) each show a preferred embodiment of a pipe material according to the present invention, and these pipe materials 2 are used as shafts for golf clubs.
In these pipe materials 2, 4 is a slightly tapered cylindrical FRP pipe main body, and 6 is an FRP reinforcing portion arranged in the hollow portion of the pipe main body 4. The reinforcing portion 6 is a rib-like member extending between the inner walls of the pipe body 4 along the axial direction, that is, (A) has an X-shaped cross section (cross shape), and (B) has an I-shaped cross section.
(C) has a Y-shaped cross section, and the reinforcing portion 6 and the pipe body 4 are integrally formed. Further, the reinforcing portion 6 is arranged in one or both of the tip portion of the pipe body 4 and the grip portion. Among the pipe materials 2 of FIG. 1, for example, the pipe material 2 of (B) provided with the reinforcing portion 6 having an I-shaped cross section has a bending strength of about 15 to 25% and a buckling strength as compared with a pipe material having no reinforcing portion 6. Is about 20%, and the pipe members 2 of (A) and (C) provided with the reinforcing portion 6 having an X-shaped cross section and a Y-shaped cross section are further improved in bending strength and buckling strength. .
【００１５】[0015]
【実施例】次に、実施例によって本発明を具体的に示す
が、本発明は下記実施例に限定されるものではない。図
２は、図１（Ａ）に示した管材の製造に用いるマンドレ
ルの先端部を示す一部省略斜視図である。このマンドレ
ル１２は、中実マンドレルの先端から３０ｃｍまでの部
分を軸方向に沿って切削することにより、該中実マンド
レルの先端部を４つの分割部１４に分割して、これら分
割部１４間に軸方向に沿ったＸ字状の空隙部１６を形成
したものである。Next, the present invention will be specifically described by way of examples, but the present invention is not limited to the following examples. FIG. 2 is a partially omitted perspective view showing the tip of the mandrel used for manufacturing the pipe material shown in FIG. This mandrel 12 divides the tip portion of the solid mandrel into four divided portions 14 by cutting a portion up to 30 cm from the tip of the solid mandrel along the axial direction, and between these divided portions 14. The X-shaped void portion 16 is formed along the axial direction.
【００１６】図２のマンドレルを用いて図１（Ａ）の管
材を製造する手順は、例えば下記の通りである。 図３に示したような所定の形状に切断した２枚のプリ
プレグ２２をマンドレル１２の空隙部１６に挿入する。
この場合、プリプレグ２２を点線で示した箇所で直角に
折り、両プリプレグ２２をその折曲箇所がマンドレル１
２の中心部で接触するように空隙部１６に挿入する（図
４参照）。必要であれば、プリプレグ２２と空隙部１６
の周壁との間に別のプリプレグを挿入してもよい。この
とき、空隙部１６に挿入するプリプレグ２２の繊維配向
角度はマンドレルの軸方向に対して４５〜９０度、特に
ほぼ９０度とすることが適当であり、これにより側方か
らの外力に対して強度の高い管材を得ることができる。
また、プリプレグ２２の空隙部１６から突出した部分２
４はマンドレル１２の周面に押し付けておく。The procedure for manufacturing the pipe material of FIG. 1 (A) using the mandrel of FIG. 2 is as follows, for example. Two prepregs 22 cut into a predetermined shape as shown in FIG. 3 are inserted into the space 16 of the mandrel 12.
In this case, the prepreg 22 is folded at a right angle at the position indicated by the dotted line, and both prepregs 22 are bent at the mandrel 1
It is inserted into the gap 16 so as to be in contact with the center of 2 (see FIG. 4). If necessary, the prepreg 22 and the gap 16
Another prepreg may be inserted between the prepreg and the peripheral wall. At this time, it is appropriate that the fiber orientation angle of the prepreg 22 inserted into the space 16 is 45 to 90 degrees, especially about 90 degrees with respect to the axial direction of the mandrel. It is possible to obtain a pipe material having high strength.
In addition, the portion 2 protruding from the void portion 16 of the prepreg 22
4 is pressed against the peripheral surface of the mandrel 12.
【００１７】マンドレル１２の空隙部１６の先端に固
定治具１８を挿入する（図２参照）。固定治具１８は、
空隙部１６の形状に相応する断面Ｘ字状に形成され、マ
ンドレル１２の各分割部１４が動かないようにして空隙
部１６の形状を保持するものである。固定治具１８の各
板部２０は、空隙部１６に挿入されたときにその先端面
がマンドレル１２の周面より内方に位置するように寸法
が設定されており、これにより管材製造時に固定治具１
８がマンドレル１２に巻き付けたプリプレグに接触しな
いようになっている。The fixing jig 18 is inserted into the tip of the space 16 of the mandrel 12 (see FIG. 2). The fixing jig 18 is
It is formed in an X-shaped cross section corresponding to the shape of the void portion 16, and holds the shape of the void portion 16 by preventing the respective divided portions 14 of the mandrel 12 from moving. Each plate portion 20 of the fixing jig 18 is dimensioned such that the tip end surface thereof is located inward of the peripheral surface of the mandrel 12 when it is inserted into the void portion 16, so that it is fixed at the time of manufacturing the pipe material. Jig 1
8 does not come into contact with the prepreg wound around the mandrel 12.
【００１８】繊維配向方向がマンドレル軸線と平行に
なるようにしたプリプレグ、繊維配向方向がマンドレル
軸線と角度をなすようにしたプリプレグ等をマンドレル
１２の周囲に適宜巻き付ける。このとき、プリプレグ２
２の空隙部１６から突出した部分２４はマンドレル１２
の周面に押し付けられているので、空隙部１６に挿入し
たプリプレグ２２とマンドレル１２の周囲に巻き付けら
れたプリプレグとは接触した状態となる。なお、巻き付
けたプリプレグの外周は、ポリプロピレン等からなるラ
ッピングテープでラッピングしてもよい。A prepreg in which the fiber orientation direction is parallel to the mandrel axis, a prepreg in which the fiber orientation direction forms an angle with the mandrel axis, and the like are appropriately wound around the mandrel 12. At this time, prepreg 2
The portion 24 protruding from the void 16 of the mandrel 12 of FIG.
Since it is pressed against the peripheral surface of the mandrel 12, the prepreg 22 inserted into the space 16 and the prepreg wound around the mandrel 12 are in contact with each other. The outer circumference of the wound prepreg may be wrapped with a wrapping tape made of polypropylene or the like.
【００１９】プリプレグを加熱硬化させた後、マンド
レル１２から固定治具１８を取り外し、さらに硬化物か
らマンドレル１２を取り外す。これにより、図１（Ａ）
に示したＦＲＰ製管材が完成する。After the prepreg is cured by heating, the fixing jig 18 is removed from the mandrel 12, and the mandrel 12 is further removed from the cured product. As a result, FIG. 1 (A)
The FRP pipe material shown in is completed.
【００２０】[0020]
【発明の効果】以上説明したように、本発明は下記の効
果を奏する。 (a)本発明の管材は、管本体と中空部内の補強部とが一
体化され、内壁と補強部との間に接着剤が介在していな
いので、補強部が強度向上に十分に寄与する。したがっ
て、上記補強部によって所望の曲げ強度、座屈強度が得
られる。 (b)本発明の管材は、管本体と補強部とが一体化されて
いるので、内壁から補強部が外れて製品不良になること
がない。 (c)本発明の管材は、マンドレルの空隙部にプリプレグ
を挿入し、さらにマンドレルにプリプレグを巻き付けた
後、プリプレグを加熱硬化させることによって製造でき
るので、補強部の配設位置にばらつきが生じることがな
く、製品の均一化を容易に達成することができる。 (d)本発明の製造方法によれば、管本体と中空部内のリ
ブ状補強部とが一体化されたＦＲＰ製管材を容易に製造
することができる。As described above, the present invention has the following effects. (a) In the pipe material of the present invention, the pipe main body and the reinforcing portion in the hollow portion are integrated, and since no adhesive agent is interposed between the inner wall and the reinforcing portion, the reinforcing portion sufficiently contributes to strength improvement. . Therefore, desired bending strength and buckling strength can be obtained by the reinforcing portion. (b) In the pipe material of the present invention, since the pipe body and the reinforcing portion are integrated with each other, the reinforcing portion does not come off from the inner wall to cause a defective product. (c) The pipe material of the present invention can be manufactured by inserting the prepreg into the void portion of the mandrel, further winding the prepreg around the mandrel, and then heat-curing the prepreg, so that the arrangement position of the reinforcing portion varies. It is possible to easily achieve product uniformity. (d) According to the manufacturing method of the present invention, it is possible to easily manufacture the FRP pipe material in which the pipe main body and the rib-shaped reinforcing portion in the hollow portion are integrated.
【図１】（Ａ）〜（Ｃ）はそれぞれ本発明管材の好適な
実施形態を示す断面図である。1 (A) to 1 (C) are cross-sectional views showing a preferred embodiment of the pipe material of the present invention.
【図２】本発明管材の製造に用いるマンドレルの一例を
示す一部省略斜視図である。FIG. 2 is a partially omitted perspective view showing an example of a mandrel used for manufacturing the pipe material of the present invention.
【図３】マンドレルの空隙部に挿入するプリプレグの一
例を示す正面図である。FIG. 3 is a front view showing an example of a prepreg to be inserted into a void portion of a mandrel.
【図４】プリプレグをマンドレルの空隙部に挿入した状
態を示す断面図である。FIG. 4 is a cross-sectional view showing a state in which a prepreg is inserted in a void portion of a mandrel.
【図５】従来の補強材付き管材の一例を示す断面図であ
る。FIG. 5 is a cross-sectional view showing an example of a conventional pipe material with a reinforcing material.
２ 管材 ４ 管本体 ６ 補強部 １２ マンドレル １６ 空隙部 １８ 固定治具 ２２ プリプレグ 2 Pipe material 4 Pipe body 6 Reinforcement part 12 Mandrel 16 Void part 18 Fixing jig 22 Prepreg
Claims (2)
壁間に掛け渡された軸方向に沿うリブ状のＦＲＰ製補強
部が配設され、かつ前記管本体と補強部とが一体に形成
されていることを特徴とする管材。1. A rib-shaped FRP reinforcing portion extending in the axial direction, which is hung between the inner walls of the FRP pipe main body, is arranged in the hollow portion of the FRP pipe main body, and the pipe main body and the reinforcing portion are integrated. A pipe material characterized by being formed in.
壁間に掛け渡された軸方向に沿うリブ状のＦＲＰ製補強
部が配設され、かつ前記管本体と補強部とが一体に形成
された管材の製造方法であって、前記補強部と対応する
形状の空隙部が内部に軸方向に沿って形成されたマンド
レルの該空隙部にプリプレグを挿入し、さらに前記空隙
部に挿入したプリプレグに接触させた状態でマンドレル
にプリプレグを巻き付けた後、これらプリプレグを加熱
硬化させることを特徴とする管材の製造方法。2. A rib-shaped FRP reinforcing portion extending in the axial direction, which is hung between the inner walls of the FRP pipe main body, is provided in the hollow portion of the FRP pipe main body, and the pipe main body and the reinforcing portion are integrated. A method of manufacturing a pipe material formed in, wherein a prepreg is inserted into the void portion of a mandrel in which a void portion having a shape corresponding to the reinforcing portion is formed along the axial direction inside, and further inserted into the void portion. A method for producing a pipe material, which comprises winding a prepreg around a mandrel in a state of being in contact with the prepreg and then heating and curing the prepreg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7300690A JP3045659B2 (en) | 1995-10-25 | 1995-10-25 | Golf club shaft and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7300690A JP3045659B2 (en) | 1995-10-25 | 1995-10-25 | Golf club shaft and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09117968A true JPH09117968A (en) | 1997-05-06 |
| JP3045659B2 JP3045659B2 (en) | 2000-05-29 |
Family
ID=17887911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7300690A Expired - Fee Related JP3045659B2 (en) | 1995-10-25 | 1995-10-25 | Golf club shaft and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3045659B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2321031A (en) * | 1997-01-13 | 1998-07-15 | Callaway Golf Co | Golf club shafts and methods and apparatus for their manufacture |
| EP1859838A1 (en) * | 2006-05-22 | 2007-11-28 | Prince Sports, Inc. | Golf shaft having a multiple tube structure |
| JP2008068074A (en) * | 2006-08-26 | 2008-03-27 | Prince Sports Inc | Composite bat having multiple tube structure |
| JP2008073524A (en) * | 2006-09-20 | 2008-04-03 | Prince Sports Inc | Composite bat having single, hollow primary tube |
| JP2009022498A (en) * | 2007-07-19 | 2009-02-05 | Kawashima Selkon Textiles Co Ltd | Decorative cloth locking rod and cloth spring seat device |
| US7503860B2 (en) | 2005-11-29 | 2009-03-17 | Prince Sports, Inc. | Sports racquet with multi-section frame |
| US7727096B2 (en) | 2005-07-18 | 2010-06-01 | Prince Sports, Inc. | Composite hockey stick system |
| US7727095B2 (en) | 2006-05-29 | 2010-06-01 | Prince Sports, Inc. | Hockey stick having a single, hollow primary tube |
| US7833455B2 (en) | 2001-03-29 | 2010-11-16 | Nippon Oil Corporation | Robot hand member and method of producing the same |
| US7909713B2 (en) | 2006-05-22 | 2011-03-22 | Prince Sports, Inc. | Shaft for a sports stick such as a hockey stick |
| JP2011087924A (en) * | 2009-09-25 | 2011-05-06 | Sri Sports Ltd | Tubular body |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6054131B2 (en) * | 2012-10-16 | 2016-12-27 | 株式会社ニフコ | Pipe joint for fuel tank |
-
1995
- 1995-10-25 JP JP7300690A patent/JP3045659B2/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5820483A (en) * | 1997-01-13 | 1998-10-13 | Callaway Golf Company | Reduced weight golf club shafts |
| US6183233B1 (en) | 1997-01-13 | 2001-02-06 | Callaway Golf Company | Apparatus for manufacturing golf club shafts |
| GB2321031B (en) * | 1997-01-13 | 2001-05-09 | Callaway Golf Co | Golf club shafts and methods of making them |
| GB2321031A (en) * | 1997-01-13 | 1998-07-15 | Callaway Golf Co | Golf club shafts and methods and apparatus for their manufacture |
| US7833455B2 (en) | 2001-03-29 | 2010-11-16 | Nippon Oil Corporation | Robot hand member and method of producing the same |
| US7727096B2 (en) | 2005-07-18 | 2010-06-01 | Prince Sports, Inc. | Composite hockey stick system |
| US7503860B2 (en) | 2005-11-29 | 2009-03-17 | Prince Sports, Inc. | Sports racquet with multi-section frame |
| EP1859838A1 (en) * | 2006-05-22 | 2007-11-28 | Prince Sports, Inc. | Golf shaft having a multiple tube structure |
| US7909713B2 (en) | 2006-05-22 | 2011-03-22 | Prince Sports, Inc. | Shaft for a sports stick such as a hockey stick |
| US7727095B2 (en) | 2006-05-29 | 2010-06-01 | Prince Sports, Inc. | Hockey stick having a single, hollow primary tube |
| JP2008068074A (en) * | 2006-08-26 | 2008-03-27 | Prince Sports Inc | Composite bat having multiple tube structure |
| US7883434B2 (en) | 2006-08-26 | 2011-02-08 | Prince Sports, Inc. | Composite bat having a multiple tube structure |
| JP2008073524A (en) * | 2006-09-20 | 2008-04-03 | Prince Sports Inc | Composite bat having single, hollow primary tube |
| JP2009022498A (en) * | 2007-07-19 | 2009-02-05 | Kawashima Selkon Textiles Co Ltd | Decorative cloth locking rod and cloth spring seat device |
| JP2011087924A (en) * | 2009-09-25 | 2011-05-06 | Sri Sports Ltd | Tubular body |
| US8465612B2 (en) | 2009-09-25 | 2013-06-18 | Sri Sports Limited | Tubular body |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3045659B2 (en) | 2000-05-29 |
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