JP2007061565A - Baseball bat and its manufacturing method - Google Patents

Baseball bat and its manufacturing method Download PDF

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JP2007061565A
JP2007061565A JP2005278715A JP2005278715A JP2007061565A JP 2007061565 A JP2007061565 A JP 2007061565A JP 2005278715 A JP2005278715 A JP 2005278715A JP 2005278715 A JP2005278715 A JP 2005278715A JP 2007061565 A JP2007061565 A JP 2007061565A
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bat
baseball bat
baseball
hitting ball
shaft
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JP5024742B2 (en
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Yoshiaki Takahashi
義明 高橋
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HAKUSO KK
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HAKUSO KK
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Abstract

<P>PROBLEM TO BE SOLVED: To obtain a baseball bat having durability and excellent in repulsion and toughness by strongly and efficiently forming and integrating a baseball bat main body. <P>SOLUTION: The baseball bat comprises the baseball bat main body consisting of two parts, i.e., a shaft part and a batting part which are strongly bonded, joined and integrated. The batting part is formed of a hollow aluminum alloy piece and has a notch slanting to the axis of the bat main body on an end face of a side connecting with the shaft part. The shaft part is previously structured and formed into a prepreg made of a backing such as carbon fibers and an epoxy resin. The prepreg material is wound around the outside of both connection parts of the shaft part and the hitting part, which is introduced into a molding mold to be pressure and heat molded. Thereby the completely integrated bat main body is obtained. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、野球用バットおよびその製法に関するものである。  The present invention relates to a baseball bat and a manufacturing method thereof.

従来において、野球用バットとして一般的な在来品としての材質は、木製、金属製、ＦＲＰ製（強化プラスチック製）であるが、これらはそれぞれ打撃性能において特徴があると同時に避け難い欠点を持っている。すなわち木製バットは、感触、打球効果などがよいが、折損し易いし、木材資源の減少、枯渇の恐れがある。金属製バットは耐久性にすぐれているが、とくにシャフト部分において硬直感があることは避けられない。さらにＦＲＰ製バットにおいては、シャフト部分の反揆強靱性はすぐれているが、打球部分の耐久性が打撃回数を重ねることによって低下し、損傷しやすい欠点がある。  Conventionally, the materials that are commonly used as baseball bats are wooden, metal, and FRP (made of reinforced plastic), but these have characteristics in terms of impact performance and have unavoidable drawbacks. ing. That is, the wooden bat has a good feel and a hitting ball effect, but it is easy to break, and there is a risk that the wood resources may be reduced or depleted. Metal bats have excellent durability, but it is inevitable that there is a hard intuition especially in the shaft portion. Further, in the FRP bat, the shaft portion has excellent anti-toughness, but the durability of the hit ball portion is lowered by repeated hits, and there is a drawback that it is easily damaged.

この発明は、野球用バットを形成するバット本体の形成を一体化することについて、強固に効率よく行うことができ、それによって得られる野球用バットとして、耐久性を有し、反揆力と強靱性にすぐれた製品を得ることを目的とするものである。  The present invention provides a baseball bat that can be firmly and efficiently integrated into the formation of a bat body that forms a baseball bat. The baseball bat thus obtained has durability, repulsive force and toughness. The purpose is to obtain an excellent product.

野球用バットのバット本体（２）をシャフト部分（Ａ）と打球部分（Ｂ）の二つの部分から構成し、それらを強固に接着・接合して一体化したことを特徴とする野球用バット、打球部分（Ｂ）は中空状のアルミニューム合金製からなり、シャフト部分（Ａ）に接続する側の端面において、バット本体（２）の中軸線に対して斜めに切り目（ｓ）を入れ、シャフト部分（Ａ）として、予めその形状、構成にカーボンファイバーなどの基材とエポキシ樹脂で作られたプリプレグを作成し、さらにシャフト部分（Ａ）、打球部分（Ｂ）双方の接合部（ａ）の外側に、このプリプレグ材を巻き付け、それを成型用金型に入れて加圧加熱成型することにより、完全に一体化されたバット本体（２）を得ることを特徴とする野球用バットの製法、打球部分（Ｂ）は中空状のアルミニューム合金製からなり、シャフト部分（Ａ）に接続する側の端面において、バット本体（２）の中軸線に対して斜めに切り目（ｓ）を入れ、シャフト部分（Ａ）として、予めその形状、構成にカーボンファイバーなどの基材とエポキシ樹脂で作られたプリプレグを作成し、さらにシャフト部分（Ａ）、打球部分（Ｂ）双方の接合部（ａ）の外側に、このプリプレグ材を巻き付け、それを成型用金型に入れて加圧加熱成型することにより、完全に一体化したバット本体（２）としたことを特徴とする野球用バットの構成とする。  A baseball bat characterized in that the bat body (2) of the baseball bat is composed of two parts, a shaft part (A) and a hitting ball part (B), and they are firmly bonded and joined together. The hitting ball portion (B) is made of a hollow aluminum alloy, and at the end surface on the side connected to the shaft portion (A), a notch (s) is formed obliquely with respect to the central axis of the bat body (2), and the shaft As a part (A), a prepreg made of a base material such as carbon fiber and an epoxy resin is created in advance in the shape and configuration, and the joint part (a) of both the shaft part (A) and the hit ball part (B) A baseball bat manufacturing method characterized by obtaining a completely integrated bat main body (2) by winding this prepreg material on the outside, placing it in a molding die and pressurizing and heating, Hitting ball part B) is made of a hollow aluminum alloy, and at the end face on the side connected to the shaft portion (A), a notch (s) is made obliquely with respect to the central axis of the bat body (2), and the shaft portion (A ), A prepreg made of an epoxy resin and a base material such as carbon fiber in advance in its shape and configuration, and further outside the joint (a) of both the shaft part (A) and the hit ball part (B), This prepreg material is wound, put into a molding die, and pressurized and heated to form a completely integrated bat body (2), thereby providing a baseball bat configuration.

この発明の野球用バットは、シャフト部分（Ａ）、打球部分（Ｂ）双方の接合部（ａ）において、シャフト部分（Ａ）はＦＲＰ製バットそのものであり、打球部分（Ｂ）はアルミニウム材そのままであり、接合部（ａ）においてはアルミニウム材を内部に保有し、その両外面にＦＲＰ材層が成形されることとなる。これは打球部分（Ｂ）において、アルミニウム材の端面から切れ目（ｓ）としての切断箇所を設けてあることにより、この接合部（ａ）においてはアルミニウム材によって構成されるパイプの表裏に亙り、ＦＲＰ材層（Ａ’）が形成されて全体が一体化され、非常に強固な接合部（ａ）を形成することとなる。この発明は野球用バットを形成するバット本体の形成を一体化することを効率よく行うことができ、それによって得られる野球用バットは、従来の木製バット、金属製バット、ＦＲＰ製バットなどに代わって、耐久性にすぐれ反揆強靱性にすぐれた野球用バットとなる。  In the baseball bat of the present invention, the shaft portion (A) is an FRP bat itself in the joint portion (a) of both the shaft portion (A) and the hit ball portion (B), and the hit ball portion (B) is an aluminum material as it is. In the joint part (a), an aluminum material is held inside, and FRP material layers are formed on both outer surfaces thereof. This is because, in the hit ball portion (B), a cut portion as a cut (s) is provided from the end face of the aluminum material, so that the joint portion (a) extends over the front and back of the pipe made of the aluminum material. The material layer (A ′) is formed and integrated as a whole, and a very strong joint (a) is formed. The present invention can efficiently integrate the formation of the bat body forming the baseball bat, and the baseball bat obtained thereby can replace the conventional wooden bat, metal bat, FRP bat, and the like. Thus, the baseball bat has excellent durability and anti-toughness.

この発明の野球用バット（１）とその製法の実施例を説明すると、図１において示すように野球用バット（１）の全体として、主要な構成としてバット本体（２）のシャフト部分（Ａ）と打球部分（Ｂ）からなり、それに先端部（３）グリップエンド（４）が取り付けられる。この発明の特徴としてはバット本体（２）を二つの部分から構成し、それらを接合部（ａ）において強固に接着・接合して一体化したものである。この打球部分（Ｂ）は中空状のアルミニューム合金製からなるが、アルミニウム製パイプをスウェージング加工して形成され、図２、図３に示すように、その細径部側［シャフト部分（Ａ）に接続する側］の端面（Ｂ１）において、バット本体（２）の中軸線に対して斜め、約６０度の角度で、深さ２〜４ｃｍ程度の切り目（ｓ）を四箇所［この切れ目（ｓ）の数は任意でよい］に入れる。なおこの切れ目（ｓ）を施す方向は、図示するところの逆方向つまり下向きでもよい。An embodiment of the baseball bat (1) of the present invention and its manufacturing method will be described. As shown in FIG. 1, the baseball bat (1) as a whole has a shaft portion (A) of the bat body (2) as a main component. And a hitting ball portion (B), to which a tip portion (3) and a grip end (4) are attached. As a feature of the present invention, the bat main body (2) is composed of two parts, and they are firmly bonded and joined together at the joint (a). The hitting ball portion (B) is made of a hollow aluminum alloy, and is formed by swaging an aluminum pipe. As shown in FIGS. 2 and 3, the small diameter portion side [shaft portion (A ) On the end surface (B 1 ) of the bat main body (2), at an angle of about 60 degrees and an angle of about 2 to 4 cm (s) with a depth of about 2 to 4 cm [this] The number of cuts (s) may be arbitrary]. Note that the direction in which the cut (s) is made may be the reverse direction shown in the drawing, that is, the downward direction.

図４はシャフト部分（Ａ）、打球部分（Ｂ）を接合一体化した状態の縦断面を示す。すなわち打球部分（Ｂ）にシャフト部分（Ａ）を強固に取り付けた状態であり、それはシャフト部分（Ａ）として、予めその形状、構成にカーボンファイバー、グラスファイバーなどの基材とエポキシ樹脂で作られたプリプレグを、その内部にエアバッグを入れ、またこの接合部（ａ）の外側に、同様にこのプリプレグ材を巻き付け、それを成型用金型に入れ、エアバッグの空気を高圧にして加圧加熱成型することにより、完全に一体化されたバット本体（２）が得られる。すなわち接合部（ａ）の図示では左側のシャフト部分（Ａ）はＦＲＰ製バットそのものであり、打球部分（Ｂ）はアルミニウム材製バットそのままであり、接合部（ａ）はアルミニウム材を内部に保有し、その両外面にＦＲＰ材層（Ａ’）が成形されることとなる。これは前述の図２、図３に示すように打球部分（Ｂ）にアルミニウム材の端面（Ｂ１）から切れ目（ｓ）としての切断箇所を設けてあることにより、この接合部（ａ）においてアルミニウム材によって構成されるパイプの表裏に亙りＦＲＰ材層（Ａ’）が形成され、一体化されることとなる。これによって内側と外側のＦＲＰ材層（Ａ’）は完全に一体化し、非常に強固な接合部（ａ）を形成することとなる。FIG. 4 shows a longitudinal section in a state where the shaft portion (A) and the hit ball portion (B) are joined and integrated. That is, the shaft portion (A) is firmly attached to the hitting ball portion (B), and it is made of a base material such as carbon fiber and glass fiber and an epoxy resin in advance as the shaft portion (A). Put the air bag inside, and wrap the prepreg material on the outside of the joint (a) in the same way, put it in the mold for molding, pressurize the air in the air bag under high pressure By heat molding, a completely integrated bat body (2) is obtained. That is, in the illustration of the joint portion (a), the left shaft portion (A) is an FRP bat itself, the hitting ball portion (B) is an aluminum bat as it is, and the joint portion (a) has an aluminum material therein. Then, the FRP material layers (A ′) are formed on both outer surfaces thereof. As shown in FIGS. 2 and 3, the hitting portion (B) is provided with a cut portion (s) as a break (s) from the end face (B 1 ) of the aluminum material. An FRP material layer (A ′) is formed on the front and back surfaces of a pipe made of an aluminum material and integrated. As a result, the inner and outer FRP material layers (A ′) are completely integrated to form a very strong joint (a).

この発明の野球用バットを示す正面図。The front view which shows the bat for baseballs of this invention. この発明の野球用バットの打球部分を示す正面図。The front view which shows the hit | ball-shot part of the baseball bat of this invention. 図２の端面拡大斜視図。The end surface expansion perspective view of FIG. この発明の野球用バットの接合部の縦断面図。The longitudinal cross-sectional view of the junction part of the baseball bat of this invention. この発明の野球用バットの接合部の横断面図。The cross-sectional view of the junction part of the baseball bat of this invention.

符号の説明Explanation of symbols

（１） 野球用バット
（２） バット本体
（Ａ） シャフト部分
（Ｂ） 打球部分
（３） 先端部
（４） グリップエンド
（ａ） 接合部
（ｓ） 切れ目
（Ａ’） ＦＲＰ材層
（Ｂ１） 端面(1) Baseball bat (2) Bat body (A) Shaft part (B) Hitting part (3) Tip part (4) Grip end (a) Joint part (s) Cut (A ') FRP material layer (B 1 ) End face

Claims (3)

野球用バットのバット本体をシャフト部分と打球部分の二つの部分から構成し、それらを強固に接着・接合して一体化したことを特徴とする野球用バット。  A baseball bat characterized in that the base body of a bat for baseball is composed of two parts, a shaft part and a hitting ball part, which are firmly bonded and joined together. 打球部分は中空状のアルミニューム合金製からなり、シャフト部分に接続する側の端面において、バット本体の中軸線に対して斜めに切り目を入れ、シャフト部分として、予めその形状、構成にカーボンファイバーなどの基材とエポキシ樹脂で作られたプリプレグを作成し、さらにシャフト部分、打球部分双方の接合部の外側に、このプリプレグ材を巻き付け、それを成型用金型に入れて加圧加熱成型することにより、完全に一体化されたバット本体を得ることを特徴とする野球用バットの製法。  The hitting ball portion is made of a hollow aluminum alloy, and at the end surface on the side connected to the shaft portion, a cut is made obliquely with respect to the center axis of the bat body, and the shape and configuration of the shaft portion in advance is carbon fiber, etc. Create a prepreg made of the base material and epoxy resin, wrap this prepreg material around the joint part of both the shaft part and the hitting ball part, put it in a mold for molding, and pressurize and heat mold To obtain a fully integrated bat body. 打球部分は中空状のアルミニューム合金製からなり、シャフト部分に接続する側の端面において、バット本体の中軸線に対して斜めに切り目を入れ、シャフト部分として、予めその形状、構成にカーボンファイバーなどの基材とエポキシ樹脂で作られたプリプレグを作成し、さらにシャフト部分、打球部分双方の接合部の外側に、このプリプレグ材を巻き付け、それを成型用金型に入れて加圧加熱成型することにより、完全に一体化したバット本体としたことを特徴とする野球用バット。  The hitting ball portion is made of a hollow aluminum alloy, and at the end surface on the side connected to the shaft portion, a cut is made obliquely with respect to the center axis of the bat body, and the shape and configuration of the shaft portion in advance is carbon fiber, etc. Create a prepreg made of the base material and epoxy resin, wrap this prepreg material around the joint part of both the shaft part and the hitting ball part, put it in a mold for molding, and pressurize and heat mold Thus, a baseball bat characterized by a completely integrated bat body.
JP2005278715A 2005-08-27 2005-08-27 Baseball bat and its manufacturing method Expired - Fee Related JP5024742B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010154979A (en) * 2008-12-27 2010-07-15 Yokohama Rubber Co Ltd:The Grip for golf club and method of manufacturing the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6485382B1 (en) * 2001-03-09 2002-11-26 Sam Chen Bat having fiber/resin handle and metal hitting member and method of making
JP2003299756A (en) * 2002-04-02 2003-10-21 Wilson Sporting Goods Co Baseball bat
JP2004113557A (en) * 2002-09-27 2004-04-15 Mizuno Corp Bat for baseball or softball

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6485382B1 (en) * 2001-03-09 2002-11-26 Sam Chen Bat having fiber/resin handle and metal hitting member and method of making
JP2003299756A (en) * 2002-04-02 2003-10-21 Wilson Sporting Goods Co Baseball bat
JP2004113557A (en) * 2002-09-27 2004-04-15 Mizuno Corp Bat for baseball or softball

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010154979A (en) * 2008-12-27 2010-07-15 Yokohama Rubber Co Ltd:The Grip for golf club and method of manufacturing the same

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