JP2001346916A - Wood club head - Google Patents

Wood club head

Info

Publication number
JP2001346916A
JP2001346916A JP2000169840A JP2000169840A JP2001346916A JP 2001346916 A JP2001346916 A JP 2001346916A JP 2000169840 A JP2000169840 A JP 2000169840A JP 2000169840 A JP2000169840 A JP 2000169840A JP 2001346916 A JP2001346916 A JP 2001346916A
Authority
JP
Japan
Prior art keywords
face
club head
rib
wood club
deflection
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
Application number
JP2000169840A
Other languages
Japanese (ja)
Other versions
JP4033432B2 (en
Inventor
Hideo Matsunaga
英夫 松永
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Sports Co Ltd
Original Assignee
Bridgestone Sports Co Ltd
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 Bridgestone Sports Co Ltd filed Critical Bridgestone Sports Co Ltd
Priority to JP2000169840A priority Critical patent/JP4033432B2/en
Publication of JP2001346916A publication Critical patent/JP2001346916A/en
Application granted granted Critical
Publication of JP4033432B2 publication Critical patent/JP4033432B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B53/0466Heads wood-type
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B53/0408Heads characterised by specific dimensions, e.g. thickness
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B53/045Strengthening ribs
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B53/045Strengthening ribs
    • A63B53/0454Strengthening ribs on the rear surface of the impact face plate
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B53/0458Heads with non-uniform thickness of the impact face plate

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Golf Clubs (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a wood club head which eliminates the worry about the durability of a clubface and with which the great deflection of the clubface may be obtained even when a ball is hit off its center. SOLUTION: The back side of the clubface is so formed that the thickness of the face decreases stepwise from the central segment of the clubface toward the periphery. The centroids of at least >=2 face backs among the face backs constituting the respective steps are offset by proper amounts from each other and at least >=1 face backs forming the respective steps are provided with projecting ribs changed in the geometrical moment of inertia in their longitudinal direction.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】ドライバーやフェアウエイウ
ッドなどのウッドクラブヘッドのフェースの改良に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a face of a wood club head such as a driver and a fairway wood.

【0002】[0002]

【従来の技術】ウッドクラブヘッドの飛距離向上のため
に、フェースの撓みに基づくフェースの反発力を利用す
ることが行われるようになっている。一般に、フェース
面でボールが打撃された際には、フェース面は、その図
心において、フェース面に直角方向の撓みが最大とな
る。従って、この図心において、フェース面の反発力が
最大となり、打撃時ボールに最大のエネルギーが伝えら
れて、この点で打撃したボールが最も飛距離が大きくな
ると考えられている。
2. Description of the Related Art In order to improve the flight distance of a wood club head, the repulsive force of a face based on the deflection of the face has been used. In general, when a ball is hit on the face surface, the deflection of the face surface in the direction perpendicular to the face surface at the centroid thereof is maximized. Therefore, at this centroid, it is considered that the repulsive force of the face surface becomes maximum, the maximum energy is transmitted to the ball at the time of hitting, and the ball hit at this point has the longest flight distance.

【0003】[0003]

【発明が解決しようとする課題】一方、飛距離を増加す
るための一般的な手法として、ヘッドの大型化が、近年
主流となっており、その際ヘッド重量の増加を抑制する
ためにフェース面の薄肉化が行われている。しかも、前
記のフェース面の撓みを増大するには、フェース面は薄
い方が都合良いのであるが、大型化したヘッドのフェー
ス面を薄くして行った場合には、耐久性の懸念が増大し
てくるといった問題がある。
On the other hand, as a general method for increasing the flight distance, enlargement of the head has become the mainstream in recent years. Has been made thinner. Moreover, in order to increase the deflection of the face surface, it is convenient to make the face surface thin. However, when the face surface of a large-sized head is made thin, there is an increase in durability concerns. Problem.

【0004】この対策として、フェースの撓みを出来る
だけ大きく維持した上で耐久性で懸念される部分を補強
するという意図を以て、フェース面の周辺部分に比較し
て中央部分を厚くしたり、またフェースの背面にリブを
設置したりすることが試みられている。このようにして
耐久性の懸念を解消する目処が立ってきて、フェース面
の撓みを増大して大きな反発力を得ることが可能となっ
ているが、打撃がオフセンターで為された場合には、フ
ェース面の撓みが著しく減少して期待した反発力が得ら
れず飛距離が伸びないと言った問題が残されている。
[0004] As a countermeasure, the center portion is made thicker than the peripheral portion of the face surface with the intention of maintaining the deflection of the face as large as possible and reinforcing the portion which is concerned about durability. Attempts have been made to install ribs on the back of the car. In this way, there is a prospect of eliminating durability concerns, and it is possible to increase the deflection of the face surface and obtain a large repulsive force, but if the impact is made off center However, there remains a problem that the deflection of the face surface is remarkably reduced so that the expected repulsion cannot be obtained and the flight distance cannot be increased.

【0005】前記の実状に鑑みて、本発明の目的とする
ところは、フェース面の耐久性に対する懸念を払拭し
て、オフセンター打撃が行われた場合でも大きなフェー
ス面の撓みが得られるゴルフクラブヘッドを提供するこ
とである。
In view of the above situation, an object of the present invention is to eliminate a concern about the durability of the face surface and to obtain a large deflection of the face surface even when an off-center hit is performed. Is to provide a head.

【0006】[0006]

【課題を解決するための手段】前記の目的を達成するた
めに、本発明に係わるウッドクラブヘッドは、請求項1
に記載されるように、中空構造のロフト角度が5〜30
°のウッドクラブヘッドであって、フェース面の中央部
分から周辺に向かって階段状にその肉厚が減少されるフ
ェース背面を設け、各段を形成するフェース背面の内少
なくとも2以上のフェース背面の図心が相互に適量ずら
されると共に、各段を形成するフェース背面の内少なく
とも1以上のフェース背面にその長手方向で断面2次モ
ーメントが変化する凸状リブが設けられる。
In order to achieve the above object, a wood club head according to the present invention comprises:
As described in the above, the loft angle of the hollow structure is 5 to 30.
° wood club head, wherein a face back surface whose thickness is reduced in a stepwise manner from the center portion of the face surface toward the periphery is provided, and at least two or more face back surfaces of the face back surfaces forming each step are provided. The centroids are shifted from each other by an appropriate amount, and at least one or more of the face backs forming the respective steps are provided with a convex rib whose second moment of area changes in the longitudinal direction thereof.

【0007】本発明のウッドクラブによれば、フェース
背面の肉厚がフェース面の中央部分から周辺に向かって
階段状に減少されるので、通常フェース面の撓みが大き
なる中央部分の剛性が増加してフェース面の耐久性が向
上すると共に、各段を形成するフェース背面の内少なく
とも2以上のフェース背面の図心を相互に適量ずらすこ
とによってフェース面の撓み分布の形を変化させて、オ
フセンター打撃が為された際でも打点位置のフェース撓
みを大きく発生させて大きな反発力をボールに与えるこ
とが出来る。尚、前記オフセンター打撃とは、フェース
面の図心を外してボールが打撃される場合を指すものと
する。
According to the wood club of the present invention, since the thickness of the face rear surface is reduced stepwise from the center portion of the face surface toward the periphery, the rigidity of the center portion where the deflection of the face surface is large usually increases. The durability of the face surface is improved, and the shape of the deflection distribution of the face surface is changed by shifting the centroids of at least two or more of the face back surfaces forming the respective steps from each other by an appropriate amount, thereby turning off the face surface. Even when a center hit is made, a large deflection of the face at the hit point position can be generated to give a large repulsive force to the ball. The off-center hitting refers to a case where the ball is hit with the centroid of the face surface removed.

【0008】さらに、各段を形成するフェース背面の内
少なくとも1以上のフェース背面にその長手方向で断面
2次モーメントが変化するリブが設けられることによっ
て、フェース面の撓み分布の形を木目細かく変化する事
が出来、その結果オフセンター打撃が為された際の打点
位置のフェース撓みを大きくし従って大きな反発力をボ
ールに与えることが出来る。従って、大型ヘッドのフェ
ース面のスイートエリア(図心で打撃した場合の飛距離
を100%として、95%以上の飛距離が得られるフェ
ース面の領域)を拡大することが出来る。
Further, at least one or more of the face back faces forming each step are provided with ribs whose second moment of area changes in the longitudinal direction of the face back face, so that the shape of the deflection distribution of the face face can be finely changed. As a result, the face deflection at the hit point position when an off-center hit is made can be increased, and a large repulsive force can be applied to the ball. Therefore, it is possible to enlarge the sweet area of the face surface of the large-sized head (the area of the face surface where a flight distance of 95% or more is obtained, where the flight distance when hit with the centroid is 100%).

【0009】尚、本発明において図心とは、衆知の材料
力学書に定義されるものであって、任意の軸に対する断
面1次モーメント(I)を全面積(A)で除した値を前
記軸から図心までの距離(e)として次式を用いて求め
られる。e=I/A、但しI=∫ydA,yは前記軸か
ら微小面積dAまでの距離。
In the present invention, the centroid is defined in the well-known book of material mechanics, and the value obtained by dividing the first moment of area (I) with respect to an arbitrary axis by the total area (A) is the above-mentioned value. The distance (e) from the axis to the centroid is obtained using the following equation. e = I / A, where I = ∫ydA, y is the distance from the axis to the minute area dA.

【0010】また、本発明において、リブの断面2次モ
ーメントとは、フェース面に垂直となるリブ断面の図心
を通るフェース面に平行な軸線周りの断面2次モーメン
トとしている。
In the present invention, the second moment of area of the rib is defined as the second moment of area around an axis parallel to the face surface passing through the centroid of the rib cross section perpendicular to the face surface.

【0011】[0011]

【発明の実施の形態】本発明においては、フェース面の
肉厚がフェース面の中央付近からフェース面の周辺方向
に行くに従って階段的に減少されて、フェース背面が実
質的に階段状に形成されるが、この際、形成される段数
は、3段以上とするのが好ましい。更に、この段数は、3
乃至5段の範囲に設定することが望ましい。
DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, the thickness of a face is reduced stepwise from near the center of the face to the periphery of the face, so that the back of the face is formed substantially stepwise. However, at this time, it is preferable that the number of formed steps is three or more. Furthermore, the number of stages is 3
It is desirable to set in the range of 5 to 5 steps.

【0012】また、各段を形成するフェース背面の内少
なくとも2以上のフェース背面の図心が相互にずらされ
る距離は、1〜10mm程度が適量である。殊に、トウ
側又はヒール側にずらす場合には、3〜10mm程度ず
らされることが好ましい。フェースの撓み分布を効果的
に変更し得るからである。
[0012] The distance by which the centroids of at least two face backs of the face backs forming the respective steps are mutually shifted is about 1 to 10 mm. In particular, when shifting to the toe side or the heel side, it is preferable to shift by about 3 to 10 mm. This is because the deflection distribution of the face can be effectively changed.

【0013】また、各段を形成するフェース背面の内少
なくとも1以上のフェース背面に設けられる凸状のリブ
は、リブの長手方向で断面2次モーメントが変化され
る。即ち、フェース背面に設置されるリブの断面形状
は、リブの長手方向で一様でない。凸状リブの断面2次
モーメントの値は、15mm4〜2×10 3mm4の範
囲に設定するのが好ましく、また、凸状リブの形状は、
フェースを背面視した際に、円環状とするのが好まし
い。凸状リブの断面形状は、半円形、矩形、三角形など
任意の形状とすることが可能である。更に、前記凸状リ
ブを円環状として、リブの中心とリブが配置されるフェ
ース背面の図心とを、殊にトウ側又はヒール側にずらす
場合には、そのずれ量を0〜5mm程度に設定するのが
好ましい。フェースの撓み分布を変更し易いからであ
る。
Further, the convex ribs provided on at least one or more face backs of the face backs forming the respective steps change the second moment of area in the longitudinal direction of the ribs. That is, the cross-sectional shape of the rib provided on the back of the face is not uniform in the longitudinal direction of the rib. The value of the second moment of the convex rib, 15mm 4 ~2 × 10 - is preferably set in a range of 3 mm 4, also, the shape of the convex rib,
When the face is viewed from the back, it is preferable that the face is formed in an annular shape. The cross-sectional shape of the convex rib can be any shape such as a semicircle, a rectangle, and a triangle. Further, when the convex rib is formed in an annular shape, the center of the rib and the center of gravity of the face rear surface on which the rib is arranged are shifted particularly to the toe side or the heel side, and the shift amount is set to about 0 to 5 mm. It is preferable to set. This is because the deflection distribution of the face can be easily changed.

【0014】「実施例」図1乃至4に基づいて、本発明
に係る一実施例を以下に説明する。図1は、チタニウム
合金製の中空殻体構造とされてその体積を290mlと
し、ロフト角度を11度に設定された実施例としてのド
ライバークラブヘッドのフェース背面を示す図である。
図1にて、フェース背面(1)は、打球面となるフェー
ス面の広さにほぼ等しい最も広い面積(3278m
2)で肉厚を2.5mmとされた第1段目のフェース
背面(2)と、この第1段目のフェース背面の図心(c
0)から3.5mmトウ(5)側に離れた位置に図心
(c1)が設定されてフェース面のトウ側が補強される
やや広い面積(1399mm2)で肉厚2.9mmの第
2段目のフェース背面(3)と、前記第1段目のフェー
ス背面(2)の図心(c0)と同一位置に図心(c2)
を持ち打球面となるフェース面のほぼ中央領域を補強す
る小さな面積(307mm2)で肉厚3.6mmの第3
段目のフェース背面(4)とから構成されている。
Embodiment An embodiment according to the present invention will be described below with reference to FIGS. FIG. 1 is a diagram showing a back face of a face of a driver club head as an example in which a hollow shell structure made of a titanium alloy has a volume of 290 ml and a loft angle is set to 11 degrees.
In FIG. 1, the face back surface (1) has the widest area (3278 m
m 2 ), the first-stage face back (2) having a thickness of 2.5 mm, and the centroid (c) of the first-stage face back
The centroid (c1) is set at a position 3.5 mm away from the toe (5) from the side (0) to reinforce the toe side of the face surface, and the second step having a slightly larger area (1399 mm 2 ) and a wall thickness of 2.9 mm. The centroid (c2) is located at the same position as the centroid (c0) of the face rear face (3) of the eye and the face rear face (2) of the first stage.
A third area having a small area (307 mm 2 ) and a thickness of 3.6 mm that reinforces a substantially central area of the face surface which becomes a hitting spherical surface.
And the back face of the step (4).

【0015】第2段目のフェース背面(3)の略中央領
域には、フェースと同一材質のチタニウム合金からなる
1個の円環状の凸状リブ(6)が、第3段目のフェース
背面(4)を包囲して配置されている。凸状リブ(6)
の断面形状は矩形状とされていて、フェース面に平行に
測定される幅と、フェース面に直角方向に測定される高
さとがその長手方向で下記のように変化されている。前
記円環状の凸状リブ(6)の長手方向でヒール(7)側
となる部分は、リブ幅1mm、リブ高さ0.5mmとさ
れて、断面2次モーメントが0.04mm4と小さな値
に設定されている。また、前記円環状の凸状リブ(6)
の長手方向でトウ(5)側となる部分では、リブ幅3m
m、リブ高さ1mmとされて、断面2次モーメントが
2.25mm4と大きな値に設定されている。この結
果、トウ(5)側のフェース面の剛性が増強されている
(図2のフェース断面図参照)。更に、図1で、円環状
の凸状リブ(6)の中心(CR)は、前記第2段目のフ
ェース背面(3)の図心(C1)から2mmヒール側に
離隔されていてフェース中央付近の補強に加担してい
る。
In a substantially central region of the second-stage face back surface (3), one annular convex rib (6) made of a titanium alloy of the same material as the face is provided. It is arranged so as to surround (4). Convex rib (6)
Is rectangular in shape, and the width measured parallel to the face surface and the height measured perpendicular to the face surface are changed in the longitudinal direction as described below. The portion on the heel (7) side in the longitudinal direction of the annular convex rib (6) has a rib width of 1 mm and a rib height of 0.5 mm, and the secondary moment of area is as small as 0.04 mm 4. Is set to Further, the annular convex rib (6)
The rib width 3m at the toe (5) side in the longitudinal direction of
m, the rib height is 1 mm, and the second moment of area is set to a large value of 2.25 mm 4 . As a result, the rigidity of the face surface on the toe (5) side is enhanced (see the sectional face view of FIG. 2). Further, in FIG. 1, the center (CR) of the annular convex rib (6) is separated from the centroid (C1) of the second-stage face back surface (3) toward the heel side by 2 mm, and It is involved in reinforcement of the neighborhood.

【0016】本発明に係る実施例では、ヘッドのフェー
ス背面(1)がこのように構成されているので、打球面
となるフェース面の中央部分が補強されると共に、該フ
ェース面のトウ(5)側の剛性が増加される一方フェー
ス面のヒール(7)側の剛性が抑制されるので、ボール
を打撃した際のトウ側からヒール側に亘るフェース面の
撓み分布において、撓みの最大となる領域が、図3に示
すように、ヒール側に拡大されて広くなる。この結果、
フェース面のヒール(7)側に打点がずれたオフセンタ
ー打撃が行われた場合でも、大きなフェース面の撓みが
得られ、従って大きな反発力が発生してボールの飛距離
ロスが防止される。
In the embodiment according to the present invention, since the face back surface (1) of the head is constituted as described above, the central portion of the face surface which becomes the hitting surface is reinforced and the toe (5) of the face surface is strengthened. The stiffness on the heel side is increased while the stiffness on the heel side of the face surface is suppressed, so that the maximum deflection occurs in the deflection distribution of the face surface from the toe side to the heel side when the ball is hit. As shown in FIG. 3, the region is enlarged toward the heel side and widened. As a result,
Even when an off-center hit with the hit point shifted to the heel (7) side of the face surface, a large deflection of the face surface is obtained, and thus a large repulsive force is generated, thereby preventing a loss of flight distance of the ball.

【0017】また、図4に参考として示した従来品(フ
ェースの肉厚が全面でほぼ同一とされリブ補強を付設し
ないフェース構造のヘッド、フェースの図示省略)のフ
ェース面の撓み分布に比較して、実施例のヘッドでは、
フェース面の中央部分の最大撓みの大きさが抑制される
ことから、フェースの耐久性が向上する。
FIG. 4 is a cross-sectional view of a conventional product (a head having a face structure in which the thickness of the face is substantially the same on the entire surface and a face structure without rib reinforcement and a face is omitted) shown in FIG. 4 for reference. In the head of the embodiment,
Since the maximum deflection at the central portion of the face surface is suppressed, the durability of the face is improved.

【0018】尚、上記の実施例では、凸状リブを長手方
向に連続した円環状とし材質をフェースと同一とした
が、本願の趣旨からこれに制限されることなく、フェー
スを背面視して棒状やコの字型のリブとし、また長手方
向でリブを断続的に設置する不連続な形式とすることが
出来、更に、使用される材質をフェースの材質と異なる
ものとすることが出来る。また、上記の実施例において
は、フェース面のトウ側の剛性が増強されたが、本発明
の趣旨に添って、図心および凸状リブの配置を調整する
ことによりヒール側の剛性が増強されるようにすること
が出来る。
In the above embodiment, the convex ribs are formed in a continuous annular shape in the longitudinal direction and the material is the same as that of the face. However, the present invention is not limited to this, and the face is viewed from the rear. It is possible to use a rod-shaped or U-shaped rib, a discontinuous type in which the ribs are intermittently provided in the longitudinal direction, and further, the material used can be different from the material of the face. In the above embodiment, the rigidity on the toe side of the face surface is increased. However, according to the gist of the present invention, the rigidity on the heel side is enhanced by adjusting the arrangement of the centroid and the convex rib. You can make it.

【0019】[0019]

【発明の効果】本発明に係るウッドクラブヘッドにおい
ては、フェース面の中央部分から周辺に向かって階段状
にフェースの肉厚が減少するようにフェースの背面側が
形成されて、各段を形成するフェース背面の内少なくと
も2以上のフェース背面の図心が相互に適量ずらされる
と共に、各段を形成するフェース背面の内の少なくとも
1以上のフェース背面にその長手方向で断面2次モーメ
ントが変化する凸状リブが設けられているので、通常撓
みが大きくなるフェース面の中央部分が補強されてフェ
ースの耐久性が向上すると共に、フェース面のトウ側か
らヒール側に亘るフェース面の撓み分布において最大値
の大きさが抑制されて最大値の領域がトウ側又はヒール
側に拡大されることから、オフセンター打撃が為された
際においても、大きな反発力が得られて飛距離のロスが
防止される。また、スイートエリアが広くなって、アベ
レージゴルファーにとって打ち易いクラブヘッドを提供
することが出来る。
In the wood club head according to the present invention, the back side of the face is formed so that the thickness of the face decreases stepwise from the center portion of the face surface to the periphery to form each step. The centroids of at least two of the face backs are shifted from each other by an appropriate amount, and at least one of the face backs forming the respective steps has a convexity whose second moment of area changes in the longitudinal direction on at least one of the face backs. Since the ribs are provided, the central portion of the face surface, where deflection is usually large, is reinforced to improve the durability of the face, and the maximum value in the deflection distribution of the face surface from the toe side to the heel side of the face surface The size of the maximum value area is expanded to the toe side or heel side by suppressing the size of the Do repulsive force obtained Ross flight distance is prevented. In addition, a sweet area is widened, so that it is possible to provide a club head which is easy for an average golfer to hit.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係る実施例のヘッドのフェース背面図
を示す。
FIG. 1 is a rear view of a face of a head according to an embodiment of the present invention.

【図2】実施例のフェースのトウ側からヒール側に亘る
断面図を示す
FIG. 2 is a cross-sectional view of the face of the embodiment from the toe side to the heel side.

【図3】実施例のフェース面の撓み分布を示す。FIG. 3 shows a deflection distribution of the face surface in the embodiment.

【図4】従来品のフェース面の撓み分布を示す。FIG. 4 shows a deflection distribution of a face surface of a conventional product.

【符号の説明】[Explanation of symbols]

1 フェース背面 2 第1段目のフェース背面 3 第2段目のフェース背面 4 第3段目のフェース背面 5 トウ 6 凸状リブ 7 ヒール DESCRIPTION OF SYMBOLS 1 Face back surface 2 First-stage face back 3 Second-stage face back 4 Third-stage face back 5 Toe 6 Convex rib 7 Heel

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 中空構造のロフト角度が5〜30°のウ
ッドクラブヘッドであって、フェース面の中央部分から
周辺に向かって階段状にその肉厚が減少されるフェース
背面を設け、各段を形成するフェース背面の内少なくと
も2以上のフェース背面の図心が相互に適量ずらされる
と共に、各段を形成するフェース背面の内少なくとも1
以上のフェース背面にその長手方向で断面2次モーメン
トが変化する凸状リブが設けられていることを特徴とす
るウッドクラブヘッド。
1. A wood club head having a hollow structure having a loft angle of 5 to 30 °, wherein a face rear surface is provided in a stepwise manner from a central portion of a face surface toward a periphery, and a face back surface is provided. The centroids of at least two or more of the face backs forming the steps are shifted from each other by an appropriate amount, and at least one of the face backs forming each step is shifted.
A wood club head, wherein a convex rib whose second moment of area changes in the longitudinal direction is provided on the back surface of the face.
【請求項2】 前記凸状リブを円環状として、リブの中
心と前記リブが配置されるフェース背面の図心の位置と
が適量ずらされていることを特徴とするウッドクラブヘ
ッド。
2. A wood club head, wherein the convex rib is formed in an annular shape, and the center of the rib and the position of the center of gravity of the rear face of the face on which the rib is arranged are shifted by an appropriate amount.
JP2000169840A 2000-06-07 2000-06-07 Wood club head Expired - Fee Related JP4033432B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000169840A JP4033432B2 (en) 2000-06-07 2000-06-07 Wood club head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000169840A JP4033432B2 (en) 2000-06-07 2000-06-07 Wood club head

Publications (2)

Publication Number Publication Date
JP2001346916A true JP2001346916A (en) 2001-12-18
JP4033432B2 JP4033432B2 (en) 2008-01-16

Family

ID=18672640

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000169840A Expired - Fee Related JP4033432B2 (en) 2000-06-07 2000-06-07 Wood club head

Country Status (1)

Country Link
JP (1) JP4033432B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006149449A (en) * 2004-11-25 2006-06-15 Bridgestone Sports Co Ltd Golf club head
JP2010035586A (en) * 2008-07-31 2010-02-18 Globeride Inc Golf club
JP2010227359A (en) * 2009-03-27 2010-10-14 Globeride Inc Golf club
US7935003B2 (en) * 2007-09-26 2011-05-03 Bridgestone Sports Co., Ltd. Golf club head
US8337329B2 (en) 2008-10-29 2012-12-25 Bridgestone Sports Co., Ltd. Golf club head
JP2016064120A (en) * 2014-09-05 2016-04-28 アクシュネット カンパニーAcushnet Company Golf club head

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006149449A (en) * 2004-11-25 2006-06-15 Bridgestone Sports Co Ltd Golf club head
US7753808B2 (en) 2004-11-25 2010-07-13 Bridgestone Sports Co., Ltd. Golf club head
US9220954B2 (en) 2004-11-25 2015-12-29 Bridgestone Sports Co., Ltd. Golf club head
US7935003B2 (en) * 2007-09-26 2011-05-03 Bridgestone Sports Co., Ltd. Golf club head
US8187118B2 (en) 2007-09-26 2012-05-29 Bridgestone Sports Co., Ltd. Golf club head
JP2010035586A (en) * 2008-07-31 2010-02-18 Globeride Inc Golf club
US8337329B2 (en) 2008-10-29 2012-12-25 Bridgestone Sports Co., Ltd. Golf club head
JP2010227359A (en) * 2009-03-27 2010-10-14 Globeride Inc Golf club
JP2016064120A (en) * 2014-09-05 2016-04-28 アクシュネット カンパニーAcushnet Company Golf club head

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