JPH08257178A - Golf club head - Google Patents

Abstract

PURPOSE: To prevent a miss shot by enlarging the moment of inertia, improving the directivity of a driven ball, lowering the center of gravity without reducing so much the strength, holding the balance between the toe and heel and driving the ball in a sweet spot. CONSTITUTION: A head body 1 integral with a face part 1a, bank part 1b, hosel part 1c or the like is formed of aluminum, carbon fiber reinforced resin, glass fiber reinforced resin, or the like. The bank part 1b is formed to project rearward along the peripheral edge 1d of the face part 1a and a cavity 1e is formed in a back (a). A notch part 1f is formed in the bank part 1b of the top side except for the toe (c) side and heel (d) side. The bank part 1b of the top (b) side has the thickness larger than that of the bank part 1b of the sole (e) side and a rearward projecting amount α of the bank part 1b of the top (b) side is smaller than a rearward projecting amount β of the bank part 1b of the sole (e) side. The notch part 1f has a small rearward projecting amount γ of the bank part 1b and is formed to have nearly the same width as a ball above a sweet spot P.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a golf club head having a cavity formed in the back of the head body.

[0002]

2. Description of the Related Art Conventionally, a so-called cavity back iron, in which a bank portion is left on the back side of a head, has a large inertia moment because its weight is arranged around the periphery of a face portion, and therefore a hit ball is hit. It is known that sometimes the head does not shake and the direction of the hit ball is good. Such a golf club head has a drawback that the center of gravity becomes high because the weight is placed on the top side of the head to increase the inertia moment. Therefore, JP-A-4-241882
There is also a golf club head in which the top side of the peripheral bank portion is removed, as in Japanese Patent Publication No. JP-A-2003-264, but although the center of gravity can be lowered, the inertia moment is remarkably reduced and the golf club head is also easily damaged in strength. It was. The most likely cause of this damage is the deformation of the heel side on the top side, which is likely to occur at the time of a miss shot. Further, there is a golf club head in which the top side, the toe side and the sole side of the bank portion on the periphery are removed as in Japanese Utility Model Laid-Open No. 6-13863, but the inertia moment is small and it is easily damaged in strength. It is a golf club head.

[0003]

The problem to be solved is that in the conventional cavity back iron, the inertia moment is large and the head does not shake but the center of gravity becomes high. Further, the above-mentioned two golf club heads having a structure excluding a part of the bank portion on the peripheral edge significantly reduce the inertia moment and the strength of the head.

In view of the above drawbacks, the object of the present invention is to provide an inertial motor.
A golf club head that has a large ment, good directionality of the hit ball, lowers the center of gravity without significantly lowering the strength, balances the toe and the heel, and can hit the ball reliably at the swim spot to prevent miss shots. Is to provide.

[0005]

In order to achieve the above object, the present invention relates to a first aspect of the invention, in which a bank protruding rearward of the head main body along a peripheral portion of a face portion of the head main body. In a golf club head in which a portion is formed and a cavity is formed in the back of the head body, the notch portion is provided except for the toe side and the heel side of the bank portion of the top. The gist of the invention according to claim 2 is that the top bank portion has a larger wall thickness than the sole bank portion, and the rearward projection amount is smaller. According to a third aspect of the present invention, the cutout portion is formed by reducing the amount of protrusion of the bank portion toward the rear.
The gist of the present invention is that it is formed above the tospot to have substantially the same width as the ball.

[0006]

According to the golf club head of the first aspect,
When the bank portion 1b protruding rearward of the head body 1 is formed along the peripheral edge portion 1d of the face portion 1a, the inertia moment is large and the directionality of the hit ball is improved. Furthermore, the top b
Since the notch 1f is formed leaving the toe c side and the heel d side of the bank portion 1b on the side, the center of gravity G can be lowered without significantly lowering the strength of the head. , A golf club head having a well-balanced heel d. According to the golf club head of the second aspect, the bank portion 1b on the side of the sole e can distribute the weight more to the peripheral edge to increase the inertia moment and lower the center of gravity G. The embankment portion 1b on the top b side can have its peripheral edge strengthened widely in the vertical direction. According to the golf club head of the third aspect, when the golf club is held, the notch portion 1f can be looked down from above, so the ball 2 is hit at the time of hitting the ball.
And the cutout portion 1f can be easily aligned and bite, and if the ball 2 and the cutout portion 1f can be aligned and bite, the ball can be reliably hit at the sweep spot P. Therefore, miss shots can be prevented and head damage can be prevented.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to one embodiment shown in the drawings. FIG. 1 is a back side perspective view of a golf club head.
FIG. 2 is a sectional front view of a main part of the golf club head, and FIG. 3 is a plan view of the golf club head.

In the golf club head, the head body 1 is made of stainless steel, titanium, aluminum, carbon fiber reinforced resin, glass fiber reinforced resin, or the like. The head body 1 is integrally formed with a face portion 1a, a bank portion 1b, a hosel portion 1c and the like. A bank portion 1b protruding rearward of the head body 1 is formed along a peripheral edge portion 1d of the face portion 1a, and a cavity 1e is formed in the back a. Of the bank portion 1b on the top b side, a notch portion 1f is formed except for the toe c side and the heel d side. The thickness X of the bank portion 1b on the top b side is
It is set to be larger than the wall thickness Y of the bank portion 1b on the rule e side, and the rearward protrusion amount α of the bank portion 1b on the top b side is smaller than the rearward protrusion amount β of the bank portion 1b on the sole e side. . Notch 1f is bank 1b
It is formed by reducing the amount of projection γ to the rear of the ball, and is formed above the switch spot P with a width W substantially the same as that of the ball 2.

When the ball 2 is hit, the cutout 1f can be looked down from above by holding the golf club, so that the ball 2 fits within the width W of the cutout 1f. He is hit and hit. At this time, the ball 2 can surely hit the ball at the position of the switch spot P.

When the bank portion 1b protruding rearward of the head body 1 is formed along the peripheral edge portion 1d of the face portion 1a as described above, the inertia moment is large and the directionality of the hit ball is good. Become. Further, since the notch 1f is formed leaving the toe c side and the heel d side of the bank portion 1b on the top b side,
The center of gravity G can be lowered without significantly lowering the strength of the head, and the golf club head has a well-balanced toe c and heel d. Bank 1b on the side of the solution e
The weight can be distributed more to the peripheral edge, the inertia moment can be increased, the center of gravity G can be lowered, and the bank portion 1b on the top b side can reinforce the peripheral edge in the vertical direction. When holding the golf club, the cutout 1f can be seen from above, so the ball 2 and the cutout 1f can be seen when hitting the ball.
It is easy to hold the ball in the same position as the ball 2 and the notch
If 1f can be matched and the ball can be hit, the ball can be reliably hit at the switch spot P. Therefore, miss shots are prevented and head damage is prevented.

When the golf club head is constructed as described above, the inertia moment is large and the directionality of the hit ball is good. Furthermore, the center of gravity G can be lowered without significantly lowering the strength of the head, and the toe c and heel d can be reduced.
It becomes a well-balanced golf club head. The bank portion 1b on the side of the sole e can distribute the weight more to the peripheral edge to increase the inertia moment and lower the center of gravity G, and the bank portion 1b on the top b side can move the peripheral edge in the vertical direction. Can be widely strengthened. Notch when holding a golf club
1f can be seen from above, so when hitting a ball
It is easy to bite the ball 2 with the notch 1f, and if the ball 2 and the groove 1f can be bite with each other, it is possible to hit the ball reliably at the switch spot P and make a miss shot. Can be prevented and damage to the head can be prevented.

[0012]

Since the present invention is constructed as described above,
According to the invention described in claim 1, the inertia moment is large and the directionality of the hit ball is improved. Further, the center of gravity can be lowered without significantly lowering the strength of the head, and the golf club head has a well-balanced toe and heel. According to the second aspect of the present invention, the bank portion on the side of the sole can be provided with more weight on the peripheral edge, and the inertial mower can be arranged.
Ment can be made large and the center of gravity can be lowered, and the embankment portion on the top side can widen the peripheral edge in the vertical direction. According to the third aspect of the present invention, when the golf club is held, the notch can be looked down from above, so that it is easy to hold the ball and the notch at the same time when hitting the ball. A golf club head having excellent effects such as hitting a ball at a sweep spot, preventing miss shots, and preventing damage to the head can be provided if the notch and the notch can be matched. You can

[Brief description of drawings]

FIG. 1 is a back side perspective view of a golf club head.

FIG. 2 is a sectional front view of a main part of a golf club head.

FIG. 3 is a plan view of a golf club head.

[Explanation of symbols]

 1 Head body 1b Bank part 1d Peripheral part 1e Cavity 1f Notch part 2 Ball a Back b Top c Toe d Heel e Solor α, β, γ Projection amount P Sweat spot W Width

Claims (3)

[Claims] 1. A golf club head in which a bank portion protruding rearward of the head body is formed along a peripheral portion of a face portion of the head body, and a cavity is formed in a back of the head body, wherein the bank portion of the top is formed. A golf club head characterized in that a notch portion is provided while leaving a toe side and a heel side. 2. The golf club head according to claim 1, wherein the bank portion on the top side has a larger wall thickness than the bank portion on the sole side, and the protrusion amount to the rear side is smaller. 3. The cutout portion is formed by reducing the amount of protrusion of the bank portion toward the rear, and is formed above the switch spot to have substantially the same width as the ball. Golf club head.