JPH0824373A - Iron club set - Google Patents

Abstract

PURPOSE:To easily prevent hook or slice by arranging a ball hitting adaptive part, which is provided at the face part of head, while shifting its position from the heel side of the head to the toe side according to change from long iron through middle iron to short iron. CONSTITUTION:Concerning the iron club set, each hosel part 7a, each face part 7b and each sole part 7c or the like are integrally molded for each head 7 and set so as to gradually enlarge a loft angle according to the increase of the number of a club. Besides, each sweet spot S is set at the same position of the center in the toe and heel directions of each face part 7b and centroid is arranged at the back of this spot. Further, plural score lines 10 are engraved on each face part 7b, and a ball hitting adaptive part 12 is formed with a fixed width (m) in the toe and heel directions. Then, each ball hitting adaptive part 12 is arranged while gradually shifting its position from the heel side to the toe side according to the change from long iron through middle iron to short iron.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to improvements in iron club sets.

[0002]

2. Description of the Related Art Generally, iron club sets are composed of 2 to 4 long irons, 5 to 7 middle irons, and 8 to 10 irons and short irons such as sand wedges. The loft angle is set larger as the number increases.

Conventionally, in this type of iron club set, the sweet spots of all the iron clubs are set at, for example, the center of the face portion of the head, and the golfer can hit the sweet spots by performing a similar swing. There are many things I did.

However, when a general golfer uses such an iron club, in a long iron having a characteristic that the club length is long and the loft angle is small, the shaft is deflected by the swing and the head striking surface hits the target flight of the ball. Since the ball enters the ball toward the right with respect to the line direction, there is a tendency for the head to open when hit and the ball to be sliced.On the contrary, for short irons with a short club length and a large loft angle, the head goes to the left and hits the ball. It has been pointed out that it is easily hooked.

Therefore, recently, as shown in FIG. 17, the hitting point (X-X line in the figure) of each head 1 is set to a fixed position and the thick portion 5 formed on the back portion 3 of the head 1 is set. By changing the shape, the center of gravity G of the head 1 is gradually moved from the toe side to the heel side as the long iron is changed to the middle iron and the short iron, and the golfer intentionally removes the sweet spot to hit the ball. An iron club set designed to prevent hooking by a long iron and slicing by a short iron is disclosed in JP-A-54-22241.

[0006]

Therefore, according to such a conventional example, the center of gravity G holds the head 1 at an appropriate inclination at the time of hitting the ball to prevent hooks and slices. In order to move the center of gravity G like this, the design of the thick portion 5 of the back portion 3 has to be changed greatly for each count, so there is a drawback that the design uniformity of the iron club set is impaired. there were.

However, it was very troublesome to design the head 1 so that the center of gravity G gradually changes for each count. The present invention has been devised in view of such circumstances,
It is an object of the present invention to provide an iron club set in which hooks and slices are prevented by a simpler method without deteriorating the unifying design of the iron club set.

[0008]

In order to achieve such an object, the invention according to claim 1 is an iron club set comprising a long iron, a middle iron and a short iron, and a face portion of a head of each iron club. It is characterized in that the position of the hit ball adapting section is shifted from the heel side to the toe side of the head as the length changes from long iron to middle iron and short iron.

The iron club set according to claim 2 is the iron club set according to claim 1, wherein
The center part of the toe and heel direction of the hit ball adaptation part is located on the heel side of the sweet spot for the long iron, at the same position as the sweet spot on the middle iron, and on the toe side of the sweet spot for the short iron. It is placed on the face part.

The invention according to claim 3 is the iron club set according to claim 1 or 2, characterized in that the width of the hitting ball adaptation portion in the toe and heel directions is substantially constant. In the invention according to item 4, the width of the hitting ball adaptation portion in the toe and heel directions is made narrower from a long iron to a middle iron and a short iron.

Further, the invention according to claim 5 is the iron club set according to any one of claims 1 to 4, wherein the sweet spot of the head of each iron club is:
The invention according to claim 6 is provided at substantially the same position in the toe and heel directions of the face portion. In the invention according to claim 5, the sweet spot is the toe of the face portion,
It is characterized in that it is approximately in the center of the heel direction.

The invention according to claim 7 relates to claim 1
In the iron club set according to any one of claims 4 to 5, the sweet spots are arranged to be shifted from the toe side to the heel side as the long iron becomes a middle iron and the short iron becomes.

The invention according to claim 8 is the iron club set according to any one of claims 1 to 7, characterized in that the hitting ball adaptation portion is within the range of the groove formed in the face portion. And claim 9 is claim 1 to claim 7.
In any one of the iron club sets described above, the hitting ball adaptation section is a face plate mounted on the face section.

[0014]

According to the inventions according to each of the claims, the position of the hit ball moves from the heel side to the toe side of the head as the hit ball adaptation section moves from the long iron to the middle iron and the short iron. The central part of the adaptation part is located on the heel side of the sweet spot for the long iron and on the toe side of the sweet spot for the short iron.

In general, the head of an iron club of this kind has a property of attempting to rotate around the center of gravity when the ball is hit by removing the sweet spot. When the ball is hit on the heel side of the head, the heel is hit centering on the center of gravity. The head is pushed and rotated so that the side moves backward, and as a result, the toe side wears.

Therefore, when a ball is hit at the center of the hitting adaptation section, the ball is hit on the heel side of the head in the long iron and the slice habit of the golfer is corrected, while in the short iron the ball is hit on the toe side of the head. By hitting the ball, on the contrary, the hook habit is corrected.

[0017]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 3 show one embodiment of a 2 iron, 5 iron and 8 iron of an iron club set according to claim 1 to claim 8 except claims 4 and 7, respectively. Similarly to the heads 7 to 9 of each iron club, the hosel portions 7a to 9a, the face portions 7b to 9b, the sole portions 7c to 9c, etc. are integrally formed of stainless steel, and the loft angle increases as the count increases. Is set.

In the iron club set according to this embodiment, the sweet spots S of all the heads including the heads 7 to 9 from the long irons to the short irons are in the toe and heel directions of the face portions 7b to 9b. The center of gravity is set at the same position in the approximate center, and the center of gravity is located behind the sweet spot S.

Further, a plurality of score lines (face grooves) 10 are engraved on the face portions 7b to 9b, and the hit ball adaptation portion 1 is provided.
2 is formed with a substantially constant width m in the toe and heel directions. Then, each of the hit ball adaptation units 12 changes from a long iron to a middle iron and a short iron,
The positions are gradually shifted from the heel side to the toe side. With such a configuration, the toe of the hitting ball adaptation unit 12 and the center portion in the heel direction (A-A line in each figure) are different from those in the long iron. As shown in FIG. 1, the structure is such that it gradually moves to the heel side of the sweet spot S, to the substantially same position as the sweet spot S in the middle iron as shown in FIG. 2, and to the toe side of the sweet spot S in the short iron as shown in FIG. Has become.

Therefore, not shown, 3, 4, 6, 7, 9,
In each of the iron heads according to the present embodiment, including the tenth ball, the hitting ball adaptation section is arranged so as to gradually shift from the heel side to the toe side as the iron number increases.

The present embodiment is constructed in this way, and if the face hitting portion 12 is provided on the face portions 7b to 9b as described above, the golfer hits the ball when hitting the ball.
It is normal to hit the ball at the center of the ball and use this as the hitting point.

By the way, in general, this type of head has a property that, when the ball is hit with the sweet spot removed, the head tends to rotate around the center of gravity. That is, as shown in FIG. 4, when the ball B is hit on the heel side of the head H with respect to the sweet spot S, the head H is pushed and rotated about the center of gravity G so that the heel side is retracted by the hit ball. As shown in FIG. 5, the toe side is put on.

Therefore, in the long iron in which the head H easily opens and enters the ball B, the slicing habit of the golfer is corrected by hitting the ball B on the heel side of the sweet spot S as shown in FIG. ,
In the short iron, this principle is reversed as shown in FIGS. 6 and 7, and by hitting the ball B on the toe side of the sweet spot S, the hook habit of the golfer is corrected. 4 to 7, P represents a hitting point.

Therefore, the central portion of the hitting ball adaptation section 12 which is the hitting point is on the heel side of the sweet spot S in the long iron, in the same position as the sweet spot S in the middle iron, and in the sweet spot S in the short iron. By using the iron club of the present embodiment, which is arranged on the toe side, and the hitting point is positively shifted from the sweet spot S, the golfer hits the ball in the center of the hitting adaptation section 12 of each head 7-9. Then, in the long iron, the ball is hit on the heel side of the sweet spot S to correct the golfer's slicing habit, and conversely, on the short iron, the ball is hit on the toe side of the sweet spot S to give the golfer a hook habit. Will be corrected.

Therefore, according to this embodiment, it is possible to reliably prevent hooks and slices. However, in the present embodiment, as described above, the sweet spot S is set at substantially the same position in the center of the toe and heel directions of the face portions 7b to 9b, and the ball is adapted as the long iron becomes the middle iron and the short iron. The portion 12 is gradually shifted from the heel side to the toe side, and the center portion of the hitting ball adaptation portion 12, which is the hitting point, is on the heel side of the sweet spot S in the long iron and the sweet spot S in the middle iron. It is possible to prevent hooks and slices with the simple method of locating at the same position and on the toe side of the sweet spot S for the short iron,
Further, unlike the conventional example shown in FIG. 17, since it is not necessary to greatly change the design of each head, it is possible to provide a unified design.

FIG. 8 to FIG. 10 show one embodiment of the 2nd iron, the 5th iron and the 8th iron of the iron club set according to claim 1 to claim 8 except claims 3 and 7. Head 1 of each iron club according to the embodiment
3 to 15 also include the hosel portions 13a to 15a and the face portion 1
3b to 15b are integrally formed of stainless steel, and the loft angle is set to increase as the count increases.

Also, in the iron club set according to this embodiment, the sweet spots S of all the heads including the heads 13 to 15 from the long irons to the short irons are in the toe and heel directions of the face portions 13b to 15b. The center of gravity is set at the same position in the approximate center, and the center of gravity is located behind the sweet spot S.

Further, a plurality of score lines 10 are engraved on the face portions 13b to 15b, and hitting ball adaptation portions 16 to 18 are provided.
However, in the present embodiment, such a hitting ball adaptation section 1 is formed.
Match the positions of 6 to 18 on the toe side, and hit ball adaptation unit 16
It is characterized in that the widths n, n ', and n "in the toe and heel directions of .about.18 are gradually narrowed (n>n'>n") from a long iron to a middle iron and a short iron.

Therefore, with such a configuration, the hit ball adaptation unit 1
The positions of 6 to 18 gradually shift from the heel side to the toe side as the count increases from the long iron to the short iron, and become the hitting point, that is, the toe of the hitting ball adapting portions 16 to 18 and the center part in the heel direction ( (BB line) is on the heel side of the sweet spot S as shown in FIG. 8 for the long iron, at substantially the same position as the sweet spot S as shown in FIG. 9 for the middle iron, and as shown in FIG. 10 for the short iron. As shown, it is located on the toe side of the sweet spot S.

Since the present embodiment is constructed in this way, when the ball is hit, the golf ball is hit by the golf ball adapting section 16-.
If the ball is hit at the center of 18 as the hitting point, in the long iron, the ball is hit on the heel side of the sweet spot S to correct the slicer habit of the golfer, and conversely, in the short iron, the sweet spot is hit. The ball is hit on the toe side from S, and the hook habit of the golfer is corrected.

Therefore, also in this embodiment, the sweet spot S is set to the same position in the center of the face portions 13b to 15b in the toe and heel directions, and as the long iron is changed to the middle iron and the short iron, the hit ball adaptation portion is formed. Match the positions on the toe side of 16 to 18 and set the widths n, n ', n "in the toe and heel directions of the hitting adaptation parts 16 to 18 to
It is possible to surely prevent hooks and slices with a simple method of gradually narrowing as it changes from long iron to middle iron to short iron.
As in the conventional example shown in FIG. 17, the iron club set has the advantage of not impairing the unity of design.

11 to 13 show claims 4 and 8.
The iron club heads 19 to 21 of the iron clubs according to the present embodiment are also included in the hosel part. 19a to 21a and face portions 19b to 21b are integrally formed of stainless steel, and the loft angle is set to increase as the count increases. Then, the sweet spots S of all the heads including the long irons to the short irons including the heads 19 to 21 are set at the same positions in the toe of the face portions 19b to 21b and at the substantially central position in the heel direction. The center of gravity is located behind.

Further, in the embodiment shown in FIGS. 1 to 3, a hitting ball adaptation section 12 formed by engraving a plurality of score lines 10 is provided.
Although the position was gradually shifted from the heel side to the toe side as the length of the long iron changed to that of the short iron, in the present embodiment, instead of such a structure, carbon made of the same shape and the same size, or heads 19 to 21 are used. Uses a different metal face plate 22 as a hitting ball adapting portion, and the face number of each head from the long iron to the short iron including the heads 19 to 21 is increased from the long iron to the short iron. Follow the instructions to gradually shift the position from the heel side to the toe side, and wear it.
The toe of the face plate 22, which is the hitting point, and the central portion in the heel direction (CC line in each figure) are on the heel side of the sweet spot S in the long iron as shown in FIG.
In the middle iron, as shown in FIG. 12, it is located at substantially the same position as the sweet spot S, and in the short iron, it is located on the toe side of the sweet spot S as shown in FIG.

In this embodiment, since the score line 22a is provided on almost the entire surface of the face plate 22, the score line 22a also has a structure in which it moves gradually like the face plate 22.

Therefore, also in this embodiment, if the golfer hits the ball with the center portion of the face plate 22 of each of the heads 19 to 21 and hits the ball, as shown in FIGS. 4 to 7, the sweet spot is obtained in the long iron. Since the ball is hit on the heel side of S to correct the golfer's slicing habit, and conversely in the short iron, the ball is struck on the toe side of the sweet spot S to correct the golfer's hook habit. The intended purpose can be achieved in the same manner as in the above embodiments.

In this embodiment as well, the face plate 22 is set as the sweet spots S are set to the same positions in the toe and heel directions of the face portions 19b to 21b at substantially the same center, and the long irons are changed to the middle irons and the short irons. Is gradually shifted from the heel side to the toe side, and the center portion of the face plate 22 which is the hitting point is on the heel side of the sweet spot S in the long iron, and at the substantially same position as the sweet spot S in the middle iron, With the short iron, the intended purpose can be achieved by a simple method of arranging it on the toe side of the sweet spot S, and the design as an iron club set as in the conventional example shown in FIG. 17 can be achieved. There is no loss of unity.

14 to 16 show one embodiment of the 2nd iron, the 5th iron, and the 8th iron of the iron club set according to claims 1 to 3, claim 7 and claim 9. Head 2 of each iron club according to the example
3 to 25 also include the hosel portions 23a to 25a and the face portion 2
3b to 25b are integrally formed of stainless steel, and the loft angle is set to increase as the count increases, but unlike the above embodiments, the total length from the long iron including the heads 23 to 25 to the short iron is reduced. The sweet spot S of all the heads gradually moves from the toe side to the heel side as the long iron changes from the middle iron to the short iron.

That is, in the face portions 23b to 25b, similar to the embodiment shown in FIGS. 11 to 13, the face plate is gradually displaced from the heel side to the toe side as the long iron becomes the middle iron and the short iron becomes. 22 is attached, but a ring-shaped weight member 26 made of beryllium copper or the like having a larger specific gravity than the heads 23 to 25 is attached between the outer periphery of the face plate 22 and the peripheral portions of the face portions 23b to 25b. Has been.

In this embodiment, the wall thicknesses q and r between the outer periphery of the face plate 22 and the toe and heel side peripheral portions of the face portions 23b to 25b are adjusted,
It has a structure in which the sweet spot S is gradually moved from the toe side to the heel side as the distance from the long iron to the middle iron and the short iron is increased. With this structure, the center portion of the face plate 22 serving as the hitting point (see FIG. As shown in FIG. 14, the middle line D-D) is on the heel side of the sweet spot S in the long iron, is in substantially the same position as the sweet spot S in the middle iron as shown in FIG. 15, and is shown in FIG. 16 in the short iron. As shown, it is located on the toe side of the sweet spot S.

Also in this embodiment, since the score line 22a is provided on substantially the entire surface of the face plate 22, the score line 22a also has a structure in which it moves gradually like the face plate 22.

Thus, also in this embodiment, if the golfer hits the ball with the center portion of the face plate 22 in the same manner as in each of the above-described embodiments, the long iron gives
Since the ball is hit on the heel side of the sweet spot S to correct the slicer habit of the golfer, on the other hand, in the short iron, the ball is hit on the toe side of the sweet spot S to correct the hook habit of the golfer. Although it is possible to achieve the intended purpose as in the example, in the present embodiment, the sweet spot S is gradually moved from the toe side to the heel side as the long iron is changed from the long iron to the middle iron and the short iron. Therefore, it is possible to more reliably prevent hooks and slices as compared with the above embodiments.

Also, the present embodiment does not impair the unity of design of the iron club set. In each of the above embodiments, the hitting ball adaptation units 12, 16-1.
8. The face plate 22 and the like were gradually arranged from the heel side to the toe side as the count increased from the long iron to the middle iron and the short iron, and the hitting point was gradually shifted. Set the hitting point at a certain position on the heel side of the sweet spot S for the long irons 2 to 4, and at the same position as the sweet spot S for the middle irons 5 to 7, and then the 8th. From 10 irons and short irons such as sand wedges, the hitting point may be set at a fixed position on the toe side of the sweet spot S, such that the long irons, the middle irons, and the short irons may be moved stepwise. Iron club set is not always 2-1
It does not have to be composed of all of No. 0.

Thus, even with such a structure, it is possible to achieve the intended purpose as in the above-described embodiments.

[0044]

As described above, according to the iron club set according to each claim, the design of each head is not largely changed as in the prior art, and the set has a uniform design and is simple. With such a structure, it is possible to prevent hooks and slices.

[Brief description of drawings]

1 is an embodiment of an iron club set according to claim 1 to claim 8 except claims 4 and 7;
It is a front view of the head of a number iron.

FIG. 2 is a fifth embodiment of the iron club set according to claim 1 to claim 8 except claims 4 and 7;
It is a front view of the head of a number iron.

FIG. 3 is an eighth embodiment of the iron club set according to claims 1 to 8 except claims 4 and 7;
It is a front view of the head of a number iron.

FIG. 4 is a schematic view of a head that hits the heel side with the sweet spot removed.

FIG. 5 is a schematic view showing the movement of a head that hits the heel side with the sweet spot removed.

FIG. 6 is a schematic view of a head that hits the toe side with the sweet spot removed.

FIG. 7 is a schematic view showing the movement of a head hit on the toe side with the sweet spot removed.

FIG. 8 is a second embodiment of the iron club set according to claim 1 to claim 8 except claims 3 and 7;
It is a front view of the head of a number iron.

FIG. 9 is a fifth example of the iron club set according to any one of claims 1 to 8 except claims 3 and 7;
It is a front view of the head of a number iron.

FIG. 10 is a front view of a No. 8 iron head in an embodiment of the iron club set according to claims 1 to 8 excluding claims 3 and 7;

FIG. 11 is a front view of a No. 2 iron head in an embodiment of the iron club set according to claims 1 to 9 except claims 4 and 8;

FIG. 12 is a front view of a No. 5 iron head in one embodiment of the iron club set according to claims 1 to 9 except claims 4 and 8;

FIG. 13 is a front view of a No. 8 iron head in an embodiment of the iron club set according to claims 1 to 9 except claims 4 and 8;

FIG. 14 is an embodiment of the iron club set according to claim 1 to claim 3, claim 7 and claim 2;
It is a front view of the head of a number iron.

FIG. 15 is a fifth example of the iron club set according to any one of claims 1 to 3, claim 7, and claim 9;
It is a front view of the head of a number iron.

FIG. 16 is an eighth embodiment of the iron club set according to any one of claims 1 to 3, claim 7, and claim 9;
It is a front view of the head of a number iron.

FIG. 17 is a rear perspective view of a conventional iron club set.

[Explanation of symbols]

7,8,9,13,14,15,19,20,21,2
3, 24, 25 heads 7b, 8b, 9b, 13b, 14b, 15b, 19b,
20b, 21b, 23b, 24b, 25b Face part 10, 22a Score line 12, 16, 17, 18 Hitting ball adaptation part 22 Face plate 26 Weight member S Sweet spot

Claims (9)

[Claims] 1. An iron club set comprising a long iron, a middle iron and a short iron,
The iron club set is characterized in that the hitting ball adapting portion provided on the face portion of the head of each iron club is arranged so as to shift from the heel side of the head to the toe side as the length of the iron changes from long iron to middle iron and short iron. 2. The toe and heel center portions of the hitting ball adaptation portion are on the heel side of the sweet spot for the long iron, at substantially the same position as the sweet spot for the middle iron, and on the toe side of the sweet spot for the short iron. The iron club set according to claim 1, wherein the hitting ball adaptation section is arranged on the face section. 3. The iron club set according to claim 1 or 2, wherein the hitting ball adaptation portion has a substantially constant width in the toe and heel directions. 4. The iron club set according to claim 1, wherein the hitting ball adaptation portion has a width in the toe and heel directions which becomes narrower from a long iron to a middle iron and a short iron. 5. The iron club set according to claim 1, wherein the sweet spots of the heads of the iron clubs are provided at substantially the same positions in the toe and heel directions of the face portion. 6. The iron club set according to claim 5, wherein the sweet spot is substantially in the center of the face portion in the toe and heel directions. 7. The iron club set according to claim 1, wherein the sweet spots are arranged to be shifted from the toe side to the heel side in accordance with the change from the long iron to the middle iron and the short iron. . 8. The iron club set according to claim 1, wherein the hitting ball adaptation portion is within a range of a groove formed in the face portion. 9. The iron club set according to claim 1, wherein the hitting ball adaptation section is a face plate mounted on the face section.