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JP2004351173A - High resilience golf club head - Google Patents

High resilience golf club head Download PDF

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Publication number
JP2004351173A
JP2004351173A JP2003188668A JP2003188668A JP2004351173A JP 2004351173 A JP2004351173 A JP 2004351173A JP 2003188668 A JP2003188668 A JP 2003188668A JP 2003188668 A JP2003188668 A JP 2003188668A JP 2004351173 A JP2004351173 A JP 2004351173A
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JP
Japan
Prior art keywords
club head
face plate
golf club
head
slit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2003188668A
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Japanese (ja)
Inventor
Atsuo Hirota
敦生 廣田
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Individual
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP2003188668A priority Critical patent/JP2004351173A/en
Publication of JP2004351173A publication Critical patent/JP2004351173A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a golf club head structure required for effectively achieving improvement of flexibility of a face plate, because it is effective that the face plate is made flexible for raising resilience performance to make deflection larger to relatively reduce deflection of a ball side because energy absorption is carried out almost by the ball side upon a collision of a club head with a ball when considering their materials. <P>SOLUTION: Though the face plate is combined with the head body, improvement of flexibility of the face plate is easily and freely attained and the resilience coefficient upon impact is raised by making a part of the combination part be a structure with slits and cutting off the combination of both at the part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、クラブフェース部とヘッド本体の境界付近にスリットを設けことにより、フェースプレートの柔軟性を増して反発性能を上げ、ボールの飛距離(初速度)が増大するようにしたゴルフクラブのヘッドに関するものである。
【0002】
【従来の技術】
ゴルフにおけるボールの飛距離の増大は、多くのゴルファーの願望である。
そのために、クラブヘッドの材質、構造等について幾多の工夫がなされているが、現状における技術の主流は、クラブヘッドを出来るだけ大きくしてクラブフェースの面積を増すと共に出来るだけ薄くすることによりフェースプレートの柔軟性を増すものであり、結果としてボールの飛距離(初速度)が増大する。
【0003】
しかし、クラブヘッドの体積の増大やフェースプレートを薄くすることには限度があり、十分な反発性能を得ることは出来ない。
【0004】
【発明が解決しようとする課題】
そこで、クラブヘッドの大型化には限界があるため、その大きさに依らず、しかも高価な材料を使用しなくても十分な反発性能が得られる方法を考えることが有効である。
【0005】
現状におけるクラブヘッドとボールの反発係数は、0.8程度と1.0よりかなり低くなっており、ヘッド速度が上がると低下する傾向がある。この原因について考察すると、ヘッドの材質は金属等でありヘッド特にフェース部は弾性限度内で用いられるので弾性体であると考えてよいが、ボールの方はその材質、構造からして弾性体ではなく、そのヒステリシス特性により打撃時にかなりのエネルギー吸収を伴う。したがって、反発係数低下の原因は、そのほとんど全てがボール側にあることが分かる。つまり、反発係数はボールの潰れの状況によって決定され、ボールの潰れ量が増加する程低下することになる。
【0006】
上記の事実から、反発係数を上げるためには、弾性体であるクラブフェース部を出来るだけ柔軟にして大きく変形するようにし、弾性体ではないボールの潰れを相対的に少なくして、エネルギー吸収量を減少すればよいことが分かる。このためには、フェースプレートの強度を確保した上で柔軟にするために、上質材料(チタン、ジュラルミン、超高張力鋼、アモルファス合金等)を用いて薄くすると共にヘッドを大型化してフェース面積を増大すること等が有効な手段となる。しかしながら、ヘッドの大型化やフェースプレートの薄肉化には限界があり、十分な柔軟性を得ることは出来ない。
【0007】
【課題を解決するための手段】
本発明では、ウッド及びアイアン型クラブヘッド(パターを除く)のフェースプレートとヘッド本体の結合部分にスリットを設け、その部分での両者の結合を断つ構造を採用する。
中空構造のウッド及びアイアンヘッドでは、基本的にはクラウンプレート及びソールプレートとフェースプレートとの結合部分に適度な長さと幅を持つ2本のスリットをフェースプレート内面に沿った形態で設ける。その他、必要に応じてクラウンプレート、ソールプレート、トウプレートあるいはヒールプレートに1本から4本の適度な長さと幅を持つスリットを設ける。
キャビティー構造のアイアンヘッドでは、ソール部の瘤状部分に適度な長さと幅を持つ1本のスリットをフェースプレート背面に沿った形態で設ける。
中実構造のウッド及びアイアンヘッドでは、ヘッド上部から下部に渡りあるいは前部から後部に渡って適度な長さと幅を持つスリットをクラブフェース表面から適度な距離だけ後退した位置に設ける。
【0008】
上記のように構成された本発明によれば、部分的にフェースプレートとヘッド本体との結合が断たれているので、フェースの面積及び使用する材料に依らずフェースプレートの柔軟性を略自由に高めることが出来る。また、ドライバーに最近多く採用されている無理な大型化や上質材料の使用に必然性がなく、フェアーウエイウッドやアイアンヘッドのように大型化が非実用的なクラブヘッドに対しても容易に適用できる。
したがって、インパクト時のボールの潰れ量を十分小さく出来ることになり、反発係数が上昇するため、ボールの初速が上昇し飛距離が伸びることになる。
【0009】
【実施例】
以下、本発明の実施例について図面に基づいて説明する。
図1は、本発明ゴルフクラブの中空ウッドヘッドの外観を示したものであり、図2は、図1のA−A断面を示したものである。これは本発明の代表例であり、クラウンプレート11及びソールプレート12にフェースプレート13の内面15に沿った形態で適度な長さと幅を持つ2本のスリットSが設けられている。
Pは、補強のために厚肉化した部分であり、必要に応じて設ける。
この例では、フェースプレート13とヘッド本体11および12の結合条件がこれまでのクラブとは全く異なり、フェースプレート13の十分な柔軟性が容易に得られる。
【0010】
図3は、本発明による中空ウッドクラブヘッドのフェースプレート背面直後の断面を示したものであり、Cがフェースプレート13とヘッド本体を結合した部分、Sがスリットを設ける位置を表している。本発明の代表例は、S1及びS2の2本のスリットを設けるものであるが、必要に応じて任意本数(1〜4本)のスリットSを設けることが可能である。
【0011】
図4は、キャビティー構造を有するアイアンヘッドの外観を示し、図5は、図4のB−B断面を示している。スリットSをソールの瘤状部分16にフェースプレート13の背面15に沿った形態で設ける。この例では、現状のクラブにおいてソールの瘤状部分16によって高剛性化されているフェースプレート13の特に下部の柔軟性が大きく上昇する。
【0012】
図6は、中実型のアイアンヘッドの断面を示している。ヘッド上部から下部に渡ってフェース表面14から適度な距離だけ後退しフェース表面14に沿った形態でスリットSを設けた例である
【0013】
図7及び8は、スリットSの形状の例を示している。
図7は直線状のスリットとした場合、図8は適度な曲線状とした例である。
なお、Hは応力集中による破損を防ぐためのものである。
【0014】
【発明の効果】
以上説明したようなスリットを有する構造を採用し、フェースプレートの厚さ(剛性)、スリットの形状と数等を適度に設定することにより、ヘッドの大きさ、材質等に依らずフェースプレートの柔軟性を十分高くでき、ヘッドの反発係数を非常に高くすることが可能となる。当然ボールの初速度(飛距離)が上昇する。しかも、ヘッドの大型化に拘る必要がなく大型化が不適切なクラブにも適用可能であること、また上質材料の使用にも拘る必要がないこと、製造も容易であること等から、多くのゴルファーが望む飛距離の面で極めて効果的なクラブを低コストで提供することが可能となる。
【図面の簡単な説明】
【図1】中空ウッド型クラブヘッドの外観図である。
【図2】図1のA−A断面図である。
【図3】中空ウッド型クラブヘッドのフェースプレート直後の断面図である。
【図4】キャビティー構造のアイアンクラブヘッドの外観図である。
【図5】図4のB−B断面図である。
【図6】中実型アイアンクラブヘッドの断面図である。
【図7】中空ウッド型クラブヘッドのスリットの形状である。
【図8】中空ウッド型クラブヘッドのスリットの形状である。
【符号の説明】
1 クラブヘッド
11 クラブヘッド1のクラウン部
12 クラブヘッド1のソール部
13 クラブヘッド1のフェースプレート
14 フェースプレート13の表面
15 フェースプレート13の背面
16 アイアン型クラブヘッド1のソールの瘤状部分
2 クラブヘッド1のネック部
3 アイアン型クラブヘッド1のキャビティー部
S スリット
H 応力集中除去用小穴
P 補強部分
C フェースプレートとヘッド本体の結合部分
[0001]
BACKGROUND OF THE INVENTION
According to the present invention, a slit is provided in the vicinity of the boundary between the club face portion and the head main body to increase the flexibility of the face plate, improve the resilience performance, and increase the flight distance (initial velocity) of the ball. It relates to the head.
[0002]
[Prior art]
Increasing the ball flight distance in golf is a desire of many golfers.
For this purpose, various ideas have been made on the material and structure of the club head, but the mainstream of the current technology is to increase the club head area as much as possible to increase the club face area and to make the face plate as thin as possible. As a result, the flight distance (initial velocity) of the ball increases.
[0003]
However, there is a limit to increasing the volume of the club head and making the face plate thin, and sufficient resilience performance cannot be obtained.
[0004]
[Problems to be solved by the invention]
Therefore, since there is a limit to increasing the size of the club head, it is effective to consider a method that can obtain sufficient resilience performance without using an expensive material regardless of the size.
[0005]
At present, the coefficient of restitution of the club head and the ball is about 0.8, which is considerably lower than 1.0, and tends to decrease as the head speed increases. Considering the cause, the material of the head is a metal or the like, and the head, particularly the face portion, is used within the elastic limit, so it can be considered an elastic body. However, the ball is not an elastic body because of its material and structure. In addition, due to its hysteresis characteristics, considerable energy absorption occurs upon impact. Therefore, it can be seen that almost all of the causes of the reduction in the coefficient of restitution are on the ball side. In other words, the coefficient of restitution is determined by the situation of the collapse of the ball, and decreases as the collapse amount of the ball increases.
[0006]
From the above facts, in order to increase the coefficient of restitution, the club face part, which is an elastic body, should be made as flexible as possible and deformed greatly, and the amount of energy absorbed can be reduced by relatively reducing the collapse of the non-elastic body ball. It can be seen that it should be reduced. For this purpose, in order to secure the strength of the face plate and to make it flexible, it is made thin by using high-quality materials (titanium, duralumin, ultra-high strength steel, amorphous alloy, etc.) and the head is enlarged to increase the face area. Increasing it is an effective means. However, there is a limit to the enlargement of the head and the thinning of the face plate, and sufficient flexibility cannot be obtained.
[0007]
[Means for Solving the Problems]
In the present invention, a structure is employed in which a slit is provided in a joint portion between a face plate and a head body of a wood and iron type club head (excluding a putter), and the joint is cut off at that portion.
In the hollow wood and iron head, basically, two slits having appropriate lengths and widths are provided along the inner surface of the face plate in the joint portion between the crown plate, the sole plate, and the face plate. In addition, one to four slits having an appropriate length and width are provided in the crown plate, the sole plate, the toe plate or the heel plate as necessary.
In an iron head having a cavity structure, a slit having an appropriate length and width is provided in a shape along the back surface of the face plate in a knob-like portion of the sole portion.
In a solid wood and iron head, a slit having an appropriate length and width is provided at a position retracted from the club face surface by an appropriate distance from the upper part to the lower part or from the front part to the rear part.
[0008]
According to the present invention configured as described above, since the coupling between the face plate and the head body is partially broken, the flexibility of the face plate can be made almost freely regardless of the area of the face and the material used. Can be increased. In addition, there is no necessity for the unreasonable enlargement and the use of high-quality materials that have been widely adopted recently by drivers, and it can be easily applied to club heads where enlargement is impractical, such as fairway wood and iron head.
Therefore, the amount of collapse of the ball at the time of impact can be made sufficiently small, and the coefficient of restitution increases, so that the initial velocity of the ball increases and the flight distance increases.
[0009]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows the appearance of the hollow wood head of the golf club of the present invention, and FIG. 2 shows the AA cross section of FIG. This is a representative example of the present invention, and two slits S having an appropriate length and width are provided in the crown plate 11 and the sole plate 12 along the inner surface 15 of the face plate 13.
P is a thickened portion for reinforcement and is provided as necessary.
In this example, the coupling conditions between the face plate 13 and the head bodies 11 and 12 are completely different from those of the conventional clubs, and sufficient flexibility of the face plate 13 can be easily obtained.
[0010]
FIG. 3 shows a cross section immediately after the face plate rear surface of the hollow wood club head according to the present invention, wherein C is a portion where the face plate 13 and the head body are coupled, and S is a position where a slit is provided. In the representative example of the present invention, two slits S1 and S2 are provided, but an arbitrary number (1 to 4) of slits S can be provided as necessary.
[0011]
FIG. 4 shows the appearance of an iron head having a cavity structure, and FIG. 5 shows a cross section taken along the line BB of FIG. The slits S are provided in the bump-like portion 16 of the sole in a form along the back surface 15 of the face plate 13. In this example, the flexibility of the lower part of the face plate 13, which is made highly rigid by the ridge-like part 16 of the sole in the current club, is greatly increased.
[0012]
FIG. 6 shows a cross section of a solid iron head. This is an example in which the slit S is provided in a form along the face surface 14 by retreating from the face surface 14 by an appropriate distance from the upper part to the lower part of the head.
7 and 8 show examples of the shape of the slit S. FIG.
FIG. 7 shows an example in which a straight slit is used, and FIG.
H is for preventing breakage due to stress concentration.
[0014]
【The invention's effect】
By adopting the structure with slits as described above and setting the thickness (rigidity) of the face plate and the shape and number of slits appropriately, the face plate is flexible regardless of the size and material of the head. Therefore, the rebound coefficient of the head can be made extremely high. Naturally, the initial velocity (flying distance) of the ball increases. In addition, it is not necessary to increase the size of the head and can be applied to clubs where the increase in size is inappropriate, and it is not necessary to be concerned with the use of high-quality materials. It is possible to provide a club that is extremely effective in terms of the flight distance desired by the golfer at low cost.
[Brief description of the drawings]
FIG. 1 is an external view of a hollow wood type club head.
FIG. 2 is a cross-sectional view taken along the line AA of FIG.
FIG. 3 is a cross-sectional view immediately after a face plate of a hollow wood type club head.
FIG. 4 is an external view of an iron club head having a cavity structure.
5 is a cross-sectional view taken along the line BB in FIG.
FIG. 6 is a cross-sectional view of a solid iron club head.
FIG. 7 shows a slit shape of a hollow wood type club head.
FIG. 8 shows a shape of a slit of a hollow wood type club head.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Club head 11 Crown part 12 of club head 1 Sole part 13 of club head 1 Face plate 14 of club head 1 Surface 15 of face plate 13 Back face 16 of face plate 13 Sole-shaped part 2 of sole of iron type club head 1 Club Neck part 3 of head 1 Cavity part S of iron type club head 1 Slit H Small hole P for removing stress concentration Reinforcement part C Joint part of face plate and head body

Claims (6)

中空構造のウッド型及びアイアン型のゴルフクラブのヘッドにおいて、クラウン部、ソール部、トウ部あるいはヒール部のうちの1箇所、2箇所、3箇所あるいは4箇所のフェースプレートとの境界部分にフェースプレート背面に沿った形態で適度な長さと幅のスリットを設け、その部分での該フェースプレートとヘッド本体との結合を断つことを特長とするゴルフクラブのヘッド。In the heads of hollow wood type and iron type golf clubs, the face plate is located at the boundary between one, two, three or four face plates of the crown, sole, toe or heel. A golf club head comprising a slit having an appropriate length and width in a form along the back surface, and breaking the connection between the face plate and the head body at that portion. キャビティー構造を有するアイアン型のゴルフクラブのヘッドにおいて、ソール瘤状部分にフェースプレート背面に沿った形態で適度な長さと幅のスリットを設け、その部分での該フェースプレートと該ソール瘤状部との結合を断つことを特長とするゴルフクラブのヘッド。In an iron-type golf club head having a cavity structure, a slit having an appropriate length and width is provided in a shape along the back of the face plate in the sole knob-like portion, and the face plate and the sole knob-like portion in the portion are provided. A golf club head characterized by breaking the bond with the head. 該スリットの前部を該フェースプレート背面から若干後退した位置とした請求項1及び2記載のゴルフクラブのヘッド。3. The golf club head according to claim 1, wherein a front portion of the slit is slightly retracted from a back surface of the face plate. 中実構造のウッド型及びアイアン型のゴルフクラブのヘッドにおいて、ヘッド上部から下部に渡ってフェース表面から若干後退した位置に該フェース表面に沿った形態で適度な長さと幅のスリットを設け、その部分でのフェース部と本体部を分離することを特長とするゴルフクラブのヘッド。In a solid-type wood-type and iron-type golf club head, a slit having an appropriate length and width is provided in a form along the face surface at a position slightly retracted from the face surface from the top to the bottom of the head. A golf club head characterized by separating a face portion and a main body portion at a portion. 該ヘッド前部から後部に渡って該スリットを設けた請求項4記載のゴルフクラブのヘッド。The golf club head according to claim 4, wherein the slit is provided from the front to the rear of the head. 該スリットの形状に適度な曲線を採用した請求項1、2、3、4及び5記載のゴルフクラブのヘッド。6. The golf club head according to claim 1, wherein an appropriate curve is adopted for the shape of the slit.
JP2003188668A 2003-05-27 2003-05-27 High resilience golf club head Pending JP2004351173A (en)

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US20120142452A1 (en) * 2010-06-01 2012-06-07 Michael Scott Burnett Golf club head having a stress reducing feature with aperture
US20120270676A1 (en) * 2010-06-01 2012-10-25 Michael Scott Burnett Golf club head having a stress reducing feature
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