JPH11253586A - Golf club head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the most suitable area for hitting and hit a ball easily by specifying in values the height of a face passing the sweet spot of a head, and the ratio of the face height to the distance from the upper end position of the face height to the sweet spot. SOLUTION: The height of a face 2 passing the sweet spot S of a head body 1 is set in the range of 30 to 60 mm. In addition, the distance L1 from the upper end position P of a face height L to the sweet spot S is set at 50% or more of the face height L. Normally, the face center of a golf club head (most projected portion) is set at 50% of the face height L. Therefore, the part above the sweet spot S of the face 2 can be expanded and the area most suited for hitting a ball can be expanded by forming the head this way. The area becomes easy to look at the time of addressing, making a ball easy to hit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club head.

[0002]

2. Description of the Related Art Conventionally, in golf clubs,
As disclosed in JP-88211A, by hitting the ball at a point slightly above a point of intersection from the center of gravity of the head to the face surface, that is, a so-called sweet spot, a gear effect at the time of hitting the ball to the ball. It is known that the given back spin is suppressed, and a flight distance equivalent to or longer than hitting with a sweet spot is obtained.

[0003] For this reason, this publication proposes a technique for securing a so-called optimal hitting area above the sweet spot by positioning the sweet spot substantially at the center between the leading edge and the top edge of the face surface. I have.

[0004]

Generally, a golfer
When hitting a ball, the player tries to catch the ball unconsciously at the face center. In particular, in a golf club of a wood type having a curved (rolled) face, the golfer can easily see and aim at the most protruding part (often a face center), so that the golfer hits the ball at the maximum protruding part. try to. Therefore,
In the case of a golf club head in which the face center and the maximum protrusion are located on or below the sweet spot, it is difficult to catch the ball in the above-described optimal hitting area when hitting the ball. Become.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a golf club head which ensures a sufficient hitting ball area in a golf club head and makes it easy to catch a ball in the hitting ball optimum area at the time of impact.

[0006]

In order to solve the above-mentioned problems, a golf club head according to the present invention has a face height passing through a sweet spot of the head of 30 to 60 mm,
The distance from the upper end position of the face height to the sweet spot is set to 50% or more of the face height.

[0007] The golf club head of the present invention is characterized in that the largest protruding portion of the curved face is located above the sweet spot. Further, the golf club head of the present invention is characterized in that the lower edge of the face surface is disposed at least 5 mm above the sole surface, and the face center is located above the sweet spot.

By setting the position of the sweet spot of the head and the shape of the head as described above, the above-described optimal hitting area is expanded, and the ball is easily captured in the optimal hitting area when actually hitting the ball.

[0009]

FIG. 1 shows a golf club head according to a first embodiment of the present invention.
FIG. 3B is a front view of the head, and FIG. 4B is a side view of a portion passing through the sweet spot. The head body of the golf club head according to the present invention can be made of a wood material such as persimmon, a resin material reinforced with reinforcing fibers such as carbon fibers, or a metal material such as stainless steel or a titanium alloy. Is not particularly limited. For example, when the head body is made of a metal material, the outer shell member forming the head body is forged,
It can be formed by molding by casting or the like, and integrating these outer shell members by welding or the like.

In the golf club head having the structure shown in FIG. 1, an intersection point S of a perpendicular line which is lowered from the center of gravity G to the face surface 2 is a sweet spot. In the case of a wood type head as shown in FIG.
Are curved in the up-down direction and the left-right direction, and form a maximum protruding portion C substantially at the center. Normally, as shown in the figure, the maximum protruding portion C is formed so as to coincide with the face center (the center in the vertical direction and the horizontal direction of the face surface 2) area of the face surface 2.

The overall shape is such that the face height L passing through the sweet spot of the head body 1 is 30 to 60 m.
m, and the distance L1 from the upper end position P of the face height to the sweet spot S is 50% or more of the face height L.

As described above, since the face center (maximum protruding portion) of the golf club head is usually formed at a position 50% of the face height L, the distance from the upper end position P to the sweet spot S is reduced. Face height L 5
By setting it to 0% or more, the area above the sweet spot S on the face surface 2 becomes large, and the above-described optimal hitting ball area can be expanded. Further, as shown in the figure, since the largest protruding portion C which is most visible and easy to aim at the address is in the optimal hitting area, it is easy to catch the ball in the area from the sweet spot S to a position slightly higher at the time of impact. Thus, it is easy to improve the flight distance by the gear effect described above.

The reason why the face height is set in the range of 30 to 60 mm in the above configuration is that if the face height is less than 30 mm, it becomes difficult to catch the ball on the face surface (optimum hitting ball area). When the face height is higher than 60 mm, the sweet spot becomes higher and the probability of hitting the ball below the sweet spot becomes higher. Actually, the face height is 40mm ~ 6
It is desirable to apply the present invention to a so-called large head in the range of 0 mm. Also, the position of the sweet spot S is set at 5 degrees of the face height L from the upper end position P so that the flight distance can be improved most by the gear effect by swinging normally.
It is good to set it in the range of 0 to 83%, preferably 50 to 67%.

FIG. 2 is a diagram showing a second embodiment of the present invention. As described above, a wood-type golf club head is generally configured such that the largest protruding portion of the face surface is located at the center region (face center region) of the face surface, as shown in FIG. In some cases, the maximum protruding portion C may not be aligned with the face center. In the golf club head having such a configuration, the maximum protruding portion C is configured to be higher than the sweet spot S.

As described above, the largest protruding portion on the face surface is easy to be noticed at the time of addressing and is also a position for aiming, so that the largest protruding portion C is located above the sweet spot S. By doing so, at the time of actual hitting, the area above the sweet spot S,
That is, it becomes easier to catch the ball in the optimal hitting area.

In such a configuration, it is preferable that the maximum protruding portion C correspond to a substantially middle position of a distance L2 from the sweet spot S to the upper end position P of the face height as shown in the figure. By determining the position of the maximum protruding portion C in this manner, the optimal hitting area can be used effectively, and the ball can be captured within the optimal hitting area even if the swing at the time of hitting is somewhat blurred.

FIG. 3 and FIG. 4 are views showing a third embodiment of the present invention. In this embodiment, the face surface 2
Is formed above the sole 1a of the head body 1 by a predetermined distance. That is, the lower edge 2a of the face 2 is
The face surface 2 is formed so as to be located above the sole 1a by a distance d, and the lower edge 2a of the face surface 2 and the sole surface 1a are curved downward toward the back side as shown in the figure. It is continued by a curved surface 12. In this case, the curved surface 12 has a curvature of R5 or more, and d is 5 mm or more, preferably 8 mm or more. With this configuration, it is possible to provide a golf club head that is easy to swing out and effectively prevents duffling. Further, as shown in the sectional view of FIG.
In the case of a head configured separately from the head plate (face plate 2d), the attachment portion 2e at the lower end of the face plate 2d is less likely to come into contact with the ground at the time of swing, so that damage to the face plate 2d is effectively prevented. can do.

Further, by shifting the face surface 2 above the head main body 1, it becomes easy to position the face center C 'above the sweet spot S. When the player actually swings, he or she attempts to catch the ball at the center of the face surface shifted upward, and as a result, it is easier to hit the ball above the sweet spot S.

In such a configuration, it is preferable that the face center C 'corresponds to a substantially middle position of a distance from the sweet spot S to the upper end position P1 of the face surface 2 passing therethrough. Face center C '
By setting the position as described above, the optimal hitting ball area can be used effectively, and the ball can be captured within the optimal hitting ball area even if the swing at the time of hitting is slightly deviated. In addition, as shown in FIG. 3B, in the wood type golf club head, if the ridge line 15 on the side surface of the head is made substantially coincident with the position of the face center C ′, it becomes easier to catch the ball in the optimal hitting area. .

In the above-described configuration, in order to lower the sweet spot S and widen the optimal hitting area, for example, the rear edge 15a of the head main body 1 is positioned lower than the lower edge 2a of the face surface 2. Or Figure 4
The center of gravity of the head may be lowered by using a high specific gravity material for the sole 1a shown in FIG.

FIG. 5 is a diagram showing a modification of the third embodiment. In the third embodiment, the lower end edge 2a of the face surface and the sole 1a are connected by the curved surface 12, but may be connected by an inclined portion 12a as shown in the figure. Further, as shown in the figure, the center of gravity can be lowered by forming the crown portion 1b serving as the upper surface of the head into a flat shape. Of course, also in this modification, the face center C '
It is configured to be above.

As described above, the position of the sweet spot on the head main body is specified as described above in relation to the head height on the face surface, the maximum protruding portion, and the face center. It becomes easier to catch the ball in the optimum area, and the flight distance can be improved.

The above embodiments have been described with reference to wood type golf clubs as an example, but the present invention can also be applied to iron type club heads.

[0024]

As described above, according to the present invention, it is possible to secure a large hitting ball optimal area, and it is easy to catch the ball in such an area during an actual swing, thereby improving the flight distance.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention;
(A) is a front view of the head, and (b) is a view of a portion passing through a sweet spot as viewed from the side.

FIG. 2 shows a second embodiment of the present invention, and is a view of a portion passing through a sweet spot as viewed from a side.

FIG. 3 shows a third embodiment of the present invention;
(A) is a front view of the head, and (b) is a view of a portion passing through a sweet spot as viewed from the side.

FIG. 4 is a sectional view of the golf club head shown in FIG. 3;

FIG. 5 is a view showing a modification of the third embodiment.

[Explanation of symbols]

 1 Head Body 1a Sole 2 Face S Sweet Spot C Maximum Protrusion

Claims (3)

[Claims] 1. A golf club head having a face height passing through a sweet spot of the head of 30 to 60 mm, wherein a distance from an upper end position of the face height to a sweet spot is 50% or more of the face height. A golf club head characterized in that: 2. A golf club head having a curved face surface, wherein a maximum projecting portion is located above a sweet spot. 3. The golf club head according to claim 1, wherein a lower edge of the face surface is disposed at least 5 mm above the sole surface, and the face center is located above the sweet spot.