JP2888472B2 - Golf club set - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved golf club set comprising an iron club.

[0002]

2. Description of the Related Art Generally, a golf club set comprising an iron club is composed of a long iron of No. 2 to 4, a middle iron of No. 5 to 7, an iron of No. 8 to 10, and a short iron of sand wedge. The loft angle is set to increase as the count increases.

In Japanese Utility Model Publication No. 59-12914, a concave portion 3 is provided in a back portion 2 of a head main body 1 while leaving a peripheral portion thereof, as shown in FIGS. A rib-shaped weight portion 4 is provided integrally with the head main body 1 from the top side peripheral portion to the sole side peripheral portion, and the weight portion 4 is connected to the long iron 5 shown in FIG. There is disclosed an iron club set provided gradually from the toe side to the heel side as the iron 6 becomes the short iron 7.

According to such an iron club set, the weight portion 4 holds the head body 1 at an appropriate inclination when hitting a ball, thereby preventing hooks and slices.

[0005]

However, in the above-mentioned prior art, the weight portion 4 is located at the position corresponding to the sweet spot of the back portion 2 (in the present application, the "suitable spot corresponding position" is referred to as "the sweet spot of the striking surface from the head"). It does not increase the surface stiffness of the sweet spot by providing a vertical line drawn down to the back of the main body at the position where the perpendicular line intersects the back portion), so the surface stiffness of the sweet spot cannot be expected. There was a disadvantage that the flight distance was not extended.

In this type of golf club set, if the center of gravity of the long iron head body is lowered, the hit ball rises and the flight distance increases, and as the ball count increases, the center of gravity of the head body is moved upward. It is easy to control the direction of the hit ball by intentionally changing the direction of the head (face). However, in the above-described conventional example, the center of gravity of the head main body 1 is adjusted although the right and left directions such as hooks and slices are adjusted. It was a fact that no adjustment was made.

[0007] For this reason, coupled with the fact that the surface rigidity of the sweet spot cannot be expected, the flight distance of the hit ball cannot be ensured with the long iron 5, and the directionality of the hit ball with the middle iron 6 and the short iron 7 still remains. There was a drawback that it was difficult to control.

The present invention has been devised in view of the above-mentioned circumstances, and has improved stability of directionality of a hit ball and surface rigidity of a sweet spot to secure a flight distance with a long iron and a middle iron and a short iron. An object of the present invention is to provide a golf club set that facilitates control of the direction of a hit ball.

[0009]

In order to achieve the above object, the invention according to claim 1 is directed to a golf club set comprising a long iron, a middle iron and a short iron, wherein a back portion of a head body of each iron is provided. A concave portion is formed leaving the peripheral edge portion, and a support is provided integrally with the head main body through the sweet spot corresponding position from the top side of the peripheral portion to the sole side in the concave portion,
The weight of the supporting portion on the sole side is gradually reduced from a long iron to a middle iron to a short iron.

According to the golf club set of the present invention, the width of the support on the sole side is reduced as the iron is changed from the long iron to the middle iron and the short iron. As you become middle iron and short iron,
The thickness of the support on the sole side is reduced.

[0011]

According to the golf club set described in each claim, since the long iron has a heavier weight on the sole side of the head main body than the middle iron or the short iron, the center of gravity of the head main body is located below. The center of gravity of the head body moves upward as the iron count increases to middle iron and short iron.

Further, as the iron count increases to middle iron and short iron, the support moves from the toe side of the head body to the heel side with the movement of the sweet spot,
The supporter holds the head body at an appropriate inclination when hitting a ball to prevent hooks and slices.

The long iron of the golf club set according to the second and third aspects of the present invention has a high sweet spot surface stiffness, so that the ball can be hit at a higher initial distance and at a higher initial speed than in the prior art, and the iron count rises. As a result, the surface rigidity of the sweet spot decreases and the contact time with the ball at the time of hitting the ball becomes longer, so that more spin is applied to the ball.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIGS. 1 and 2 are a rear view and a sectional view of a head body of a second iron in a golf club set according to an embodiment of the present invention. FIGS. 5 and 6 show a rear view and a cross-sectional view of the head body of the 8-iron, respectively, and FIG. 5 and FIG.
The hosel portions 10a and 10a, the face portions 8b to 10b, the sole portions 8c to 10c, and the like are integrally formed of stainless steel, and are set so that the loft angle increases as the count increases.

The back portions 8d to 10d of the head bodies 8 to 10 are respectively provided with recesses 11 to 1 except for the peripheral portions.
In each of the concave portions 11 to 13, a sweet spot corresponding position P (a perpendicular line lowered from the sweet spot S of the hitting surface to the back portion 8d to 10d side of each of the head bodies 8 to 10 is formed in each of the back portions 8d. 10d), rib-shaped supports 14-16, which are thinner than the peripheral edge portion,
It is provided integrally with the head main bodies 8 to 10 from the top side peripheral portion to the sole side peripheral portion. Each of the supports 14 to 16 has a shape that is sequentially wider and thicker toward the sole at the sweet spot corresponding position P.
In this embodiment, as the iron count increases from long irons to short irons, the widths m _{1 to} m ₃ of the supports 14 to 16 on the sole side and the thicknesses n _{1 to} n ₃ thereof are reduced (m ₁ >).
m ₂ > m ₃ , n ₁ > n ₂ > n ₃ ).
6 is characterized in that the weight on the sole side is sequentially reduced.

Since the supports 14 to 16 are formed as described above, the sole portion 8c of the head body 8 of a long iron has a longer length than a middle iron or a short iron.
Since the weight on the side is heavy, the center of gravity of the head main body 8 is located below, and the surface rigidity of the sweet spot S is larger than that of a middle iron or a short iron because the thickness of the sweet spot S is large.

Then, as the iron count rises from a long iron to a middle iron and a short iron, the center of gravity of the head bodies 9 and 10 moves upward, and the surface stiffness of the sweet spot S decreases and the ball at the time of hitting the ball Contact time is longer.

The weight on the sole side of the fifth iron in FIG. 3 is set to be substantially the same as the weight on the sole side of the head body 1 of the conventional golf club set shown in FIG. Also, as described above, FIGS. 1 to 6 show only the second iron, the fifth iron, and the eighth iron in the golf club set according to the present embodiment. Also, as the iron count increases from long irons to short irons, the width and thickness of the support on the sole side gradually decrease, and the weight of the support on the sole side gradually decreases.

Since the present embodiment is constructed as described above, when the ball is hit with each iron club, the center of gravity of the head body 8 is lower in the long iron than in the middle iron or the short iron as described above, and Since the surface stiffness of the sweet spot S is large, the hit ball is higher and hits farther at a faster initial speed than before.

Therefore, according to the present embodiment, there is an effect that the flight distance of a long iron hit ball is improved as compared with the related art. Since the center of gravity of the head bodies 9 and 10 moves upward as the count increases, it is easier to control the direction of the hit ball by intentionally changing the direction of the head (face), and the sweet spot is compared to a long iron. S
The surface rigidity of the ball decreases and the contact time with the ball at the time of hitting the ball becomes longer, so that a lot of spin is applied to the ball.

Therefore, according to the middle iron and the short iron of the present embodiment, the directionality of the hit ball can be easily controlled as compared with the conventional one, and a shot having sharp spin and sharpness can be obtained.

Although the sweet spot generally moves from the toe side of the head body to the heel side as the count increases, in this embodiment, the supports 14 to 16 pass through the sweet spot corresponding position P to form the concave portions 11 to 13. As the sweet spot S moves from the long iron to the middle iron to the short iron, the supports 14 to 1
6 moves from the toe side of the head bodies 8 to 10 to the heel side, and the supports 14 to 16 move when the head bodies 8 to 1 are hit.
0 is held at an appropriate inclination to prevent hooks and slices.

Therefore, according to the present embodiment, the directionality of the hit ball is more stable than in the prior art, in combination with the above-mentioned effects. In the above embodiment, as the iron count increases from the long iron to the short iron, the support members 14 to
Although the width m _{1 to} m ₃ and the thickness n _{1 to} n ₃ of the sole side of the 16 were reduced to reduce the weight of the sole side of the supports 14 to 16, as the count increased to short irons, Of course, either the width on the sole side or the thickness of the sole may be reduced to gradually reduce the weight of the support on the sole side.

[0024]

As described above, according to the golf club set according to each claim, the center of gravity of the head body is lower in the long iron than in the middle iron or the short iron, and the surface rigidity of the sweet spot is lower. Since it is large, it has the advantage that the hit ball is higher than in the past, and the initial speed is faster and the flight distance is longer.

In the case of the middle iron and the short iron, the center of gravity of the head body moves upward, and naturally, as the count increases from the long iron to the middle iron and the short iron, the support body is heeled from the toe side of the head body. Since the support moves to the side and the supporter holds the head main body at an appropriate inclination when hitting the ball to prevent hooking and slicing, the directionality of the hitting ball is more stable than in the related art.

According to the second and third aspects of the present invention, the surface stiffness of the sweet spot decreases as the count increases, and the contact time with the ball at the time of hitting the ball becomes longer. This has the effect that the shot is sharp and the shot is sharp.

[Brief description of the drawings]

FIG. 1 is a rear view of a No. 2 iron head body of a golf club set according to one embodiment of the present invention.

FIG. 2 is a cross-sectional view of the head main body shown in FIG.

FIG. 3 is a rear view of a 5-iron head body of the golf club set according to one embodiment of the present invention.

FIG. 4 is a sectional view of the head main body shown in FIG. 3;

FIG. 5 is a rear view of an 8-iron head body of the golf club set according to one embodiment of the present invention.

FIG. 6 is a sectional view of the head main body shown in FIG. 5;

FIG. 7 is a rear perspective view of a conventional golf club head.

FIG. 8 is a rear perspective view of a conventional golf club head.

FIG. 9 is a rear perspective view of a conventional golf club head.

[Explanation of symbols]

 8, 9, 10 Head body 8d, 9d, 10d Back part 11, 12, 13 Concave part 14, 15, 16 Support

Claims (3)

(57) [Claims] In a golf club set including a long iron, a middle iron and a short iron, a concave portion is formed in a back portion of a head body of each iron while leaving a peripheral portion thereof, and the peripheral portion is formed in the concave portion. A support is provided integrally with the head body from the top side to the sole side through the sweet spot corresponding position, and the weight of the support portion on the sole side is sequentially changed from a long iron to a middle iron to a short iron. Golf club set characterized by being light. 2. The golf club set according to claim 1, wherein the support has a sole-side width that decreases from a long iron to a middle iron to a short iron. 3. The golf club set according to claim 1, wherein the thickness of the support decreases from the long iron to the middle iron to the short iron on the sole side.