JP2000229138A - Golf club and its set - Google Patents

Abstract

(57) [Summary] The present invention relates to a golf club and a set thereof.
It is an object of the present invention to provide a golf club and a set thereof in which the hitting feel of the ball is enhanced without impairing the weight balance of the head, and at the same time, the left and right hitting points with many variations are reinforced. A golf club according to claim 1, wherein a rib extending from a position corresponding to a sweet spot on the face portion to a toe, heel direction and a sole direction of the head is provided on a back surface side of the face portion of the head, According to a second aspect of the present invention, in the golf club according to the first aspect, the ribs correspond to at least the sole-side region of the sweet area including the sweet spot of the face portion, and the toe, heel, and sole directions of the head. It is characterized by being extended.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a golf club and a set thereof.

[0002]

2. Description of the Related Art In recent years, in order to stabilize the flight distance and direction of a hit ball by eliminating head shake at the time of impact, a golf club has a thin face portion to reduce the weight of the head portion at the peripheral portion of the face portion. By dispersing the weight of the head to the peripheral portion in this way, the moment of inertia at the time of hitting the ball is increased, and blurring of the head is prevented.

[0003]

However, it has been pointed out that when the face portion is formed to be thin, the strength of the face portion is reduced and the shot feeling is deteriorated. On the other hand, various golf clubs in which a thick portion is partially provided on the back side of the face portion are on sale, but conventionally,
All of these golf clubs have strong design implications and do not have a thick portion corresponding to the point at which the golf ball is hit. Therefore, there is much waste such as deterioration of the weight balance.

[0004] Also, golf clubs are known in which only the position corresponding to the sweet spot on the face portion is thickened. However, in these golf clubs, the shot feeling when hit with a sweet spot is relatively high. Although good, the improvement in shot feeling and strength of the face portion when the sweet spot was removed was not considered at all. When a general player hits a ball with an iron or wood (especially a fairway wood), the variation in the left and right hit points is larger than the variation in the upper and lower hit points,
The range of this variation is a so-called sweet area (a flying distance when hitting at a sweet spot is-
Range within 5%), but if the ball is hit above the sweet area, the sole hits the ground strongly, causing a duff, resulting in a missed shot. As shown in FIG. 13, the area A on the sole side including the sweet spot SS excluding the upper area of the oval area of the sweet area.

Although a satisfactory shot can be obtained by hitting the ball in the area A, conventionally, the hit feeling in the effective hitting area in the sweet area is increased without impairing the weight balance of the head. In addition, none of the golf clubs attempted to reinforce the face portion. The present invention has been devised in view of the above circumstances, and provides a golf club and a set thereof that enhances the feel at impact of the ball without impairing the weight balance of the head and also enhances the left and right hit points with many variations. The purpose is to do.

[0006]

In order to achieve the above object, a golf club according to a first aspect of the present invention provides a golf club on a back surface side of a face portion of a head from a position corresponding to a sweet spot on the face portion in a toe, heel direction and a heel direction of the head. A rib extending in the sole direction is provided.
2. The golf club according to claim 1, wherein the ribs extend in the toe, heel and sole directions of the head at least corresponding to the sole area of the sweet area including the sweet spot of the face portion. Features.

The invention according to claim 3 is based on claim 1.
Alternatively, in the golf club according to the present invention, a cavity is formed in a back portion of the head, and a rib is provided in the cavity. The golf club according to claim 2, wherein the head is formed in a hollow shape, and the rib is provided on the back surface side of the face portion in the hollow.

In a golf club set according to a fifth aspect of the present invention, a rib extending from a position corresponding to a sweet spot on the face portion to the toe, heel direction and sole direction of the head is provided on the back side of the face portion of the head. The ribs extending in the heel direction are arranged on the top side of the head as the count increases, and the invention according to claim 6 is the golf club set according to claim 5, wherein the mass of the ribs extending in the sole direction is increased. The golf club set according to claim 7, further comprising: a head portion on the back surface side of the face portion from the sweet spot corresponding position of the face portion.
A rib extending in the heel direction and the sole direction is provided, and the mass of the rib extending in the sole direction is reduced as the count increases.

The invention according to claim 8 is the invention according to claim 5
8. The golf club set according to claim 7, wherein the ribs correspond to at least the sole side area of the sweet area including the sweet spot of the face portion, and the head toe, heel direction, and sole direction. It is characterized by being extended.

(Effect) According to each of the golf clubs according to claims 1 to 4, even if the hit points vary from side to side.
The ribs improve the shot feeling of the face portion without impairing the weight balance of the head, and reinforce the face portion.

[0011] According to the golf club set according to the fifth and eighth aspects, even if the hit points vary from side to side,
Each rib improves the shot feeling of the face portion without impairing the weight balance of the head, and enhances the face portion. Also, since the loft angle of the head increases as the ball count increases, the ball is often hit on the top side of the face portion.
Since the ribs extending in the heel direction are arranged on the top side of the head, each rib improves the feel at impact of the face portion and reinforces the face portion.

According to the golf club set according to the sixth and seventh aspects, the center of gravity of the head becomes higher as the iron count increases, so that the head with a small iron count has a reduced spin amount and a longer flight distance, and The higher the head count, the more spin is applied to the ball.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIGS. 1 to 3 show a first embodiment of a golf club according to claims 1 to 3, in which 5 denotes a hosel part 7, a face part 9, a sole part 11 and the like, which are made of soft iron, stainless steel, titanium alloy or the like. In order to reduce the thickness of the face portion 9 with a long iron (3 iron) head integrally formed of the metal described above, a concave cavity 17 is formed in the back portion 13 leaving a peripheral portion 15.

Then, as shown in FIG.
Inside, a substantially T-shaped rib 19 extending in the toe, heel and sole directions of the head 5 is integrally formed corresponding to the sole area A of the sweet area including the sweet spot SS, as shown in FIGS. As shown in FIG. 3, the strip-shaped horizontal rib 19a extending in the toe and heel directions is formed with a uniform thickness thinner than the peripheral edge portion 15, and the vertical rib 19b extending in the sole direction is formed from the horizontal rib 19a in the sole direction. To be thicker and wider in order, each end of which is
It is provided to extend to.

Although the vertical rib 19b is formed to be thicker in the direction of the sole as shown in the figure, the vertical rib 19b is thinner than the peripheral edge 15 on the sole side so as not to impair the moment of inertia of the head 5. And the thickness of the face portion 9 is 3
mm, and the ribs 19 are provided so as to project from the bottom of the cavity 17 by 0.3 mm or more. The head 5 according to the present embodiment is configured as described above. The rib 19 can be used not only when the ball is hit in the sole side area A of the sweet area including the sweet spot SS but also when the hit point varies from side to side or downward. Can improve the shot feeling of the thin face portion 9 without impairing the moment of inertia of the head 5 and reinforce the face portion 9.

As described above, since the sole area A of the sweet area greatly extends from the sweet spot SS in the toe, heel direction and sole direction, the rib 19 is adjusted to the toe, heel direction and sole direction in accordance with this area A. According to the present embodiment, by adopting a shape extending to the conventional golf club in which only the position corresponding to the sweet spot of the face portion is thickly formed, the sweet spot SS is removed and left or right or downward. Even if the hit points vary, the shot feeling of the thin face portion 9 can be improved by the rib 19 and the strength of the face portion 9 can be improved.

Since no useless ribs are provided in the top direction of the head 5 with less variation in hit points, the provision of the ribs 19 does not impair the moment of inertia when hitting the ball. In the present embodiment, the ribs 19 are provided slightly above the sweet spot SS, but at least from the toe end of the sweet area and the boundary connecting the sweet spot SS and the heel side end of the sweet area. A rib may be provided so as to cover the sole-side area of the lower sweet area.

FIG. 4 shows a second embodiment of the golf club according to the first to third aspects of the present invention. In the figure, reference numeral 21 denotes a hosel portion 23, a face portion 25, a sole portion 27, etc. And a head integrally formed of a metal such as stainless steel, a titanium alloy, or the like. A cavity 33 is formed in the back portion 29 except for a peripheral portion 31 so that the face portion 25 is made thinner.

As shown in the figure, in the present embodiment, instead of the ribs 19, in the cavity 33, the head 21 extends substantially in the toe, heel and sole directions corresponding to the sole area A of the sweet area. Triangular rib 35
And a plate-shaped vibration absorbing material 39 made of a material (for example, synthetic resin or aluminum) that is more flexible than the head 21 in an oval-shaped concave portion 37 provided in the rib 35 corresponding to the sweet spot SS. With
The rib 35 is formed so as to be entirely thinner than the peripheral portion 31, and is sequentially formed to be thicker in the sole direction.

Since the present embodiment is configured as described above, similarly to the above-described embodiment, not only when the ball is hit in the sole area A of the sweet area including the sweet spot SS, but also, the hit points Also, the rib 35 improves the shot feeling of the thin face portion 25 without impairing the moment of inertia of the head 21 at the time of hitting the ball, reinforces the face portion 25, and furthermore, the vibration absorbing material 39.
Absorbs the impact at the time of hitting the ball and makes the shot feeling softer than in the first embodiment.

Therefore, according to the present embodiment, the intended purpose can be achieved similarly to the first embodiment. FIGS. 5 and 6 show one embodiment of the golf club according to claims 1, 2 and 4. In the drawings, reference numeral 41 denotes a hosel portion 43, a face portion 45, a sole portion 47, and a back portion 49.
Is a hollow iron club head integrally formed of a metal such as soft iron, stainless steel, or a titanium alloy. A sweet spot SS is provided on the back surface 45a side of the face portion 45 in the hollow.
A substantially T-shaped rib 51 extending in the toe, heel direction, and sole direction of the head 41 is integrally formed corresponding to the sole side area A of the sweet area including FIGS.
As shown in the figure, a strip-shaped lateral rib 5 extending in the toe and heel directions.
1a and the strip-shaped vertical rib 51b extending in the sole direction are each formed with a uniform thickness.

The head 41 according to the present embodiment is configured as described above. The head 41 can be used not only when the ball is hit in the sole area A of the sweet area including the sweet spot SS, but also when the hit points vary from side to side or downward. The ribs 51 enhance the shot feeling of the face portion 45 and enhance the face portion 45. Therefore, according to the present embodiment, even when the sweet spot SS is removed and the hit points vary from side to side or downward, the face portion 4
The shot feeling and strength of No. 5 are improved.

Also, in this embodiment, since the useless rib is not provided in the top direction of the head 41 with less variation in the hitting point, the provision of the
Weight balance is not impaired.

FIGS. 7 to 9 are a rear view and a sectional view of a middle iron (fifth iron) head of a golf club set according to an embodiment of the present invention. FIG. 12 shows a rear view and a cross-sectional view of a short iron (9-iron) head, and constitutes a golf club set according to this embodiment together with the head 5 shown in FIGS.

Then, similarly to the head 5, both heads 5
The hosel portions 57 and 59, the face portions 61 and 63, the sole portions 65 and 67, etc. are integrally formed of a metal such as soft iron, stainless steel, or a titanium alloy. The loft angle has increased as the count increased. Then, concave cavities 77 and 79 are formed in the back portions 69 and 71 of the heads 53 and 55, respectively, leaving the peripheral edges 73 and 75, respectively.

As shown, the cavities 77, 7
9, a substantially T-shaped rib 81, extending in the toe, heel direction and sole direction of the heads 53 and 55, corresponding to the sole area A of the sweet area of the face portions 61 and 63,
83 are integrally formed, and as shown in FIGS. 7 and 11, strip-shaped lateral ribs 53a, 55 extending in the toe and heel directions.
a is formed with a uniform thickness that is thinner than the peripheral edges 73 and 75, respectively, and is extended in the sole direction.
55b is sequentially formed thicker in the sole direction.

As shown in FIGS. 1, 7 and 10, the present embodiment employs a lateral rib 19 extending in the toe and heel directions.
a, 81a, 83a are arranged on the top side of the heads 5, 53, 55 as the count increases from the long iron, and the vertical ribs 19b, 81b, 83 extend in the sole direction.
b is made thinner as the iron count increases to a short iron, and the width in the toe and heel directions is reduced to reduce the mass.

Since the golf club set according to the present embodiment is configured as described above, the ribs 19 can be formed not only when the ball is hit in the sole area A of the sweet area, but also when the hit points vary from side to side or downward. , 81, 83 can improve the shot feeling of the thin face portions 9, 61, 63 without impairing the moment of inertia of the heads 5, 53, 55, and reinforce the face portions 9, 61, 63.

Further, since the loft angle increases as the count increases, the ball is often hit on the top side of the face portions 61 and 63. As described above, in the present embodiment, as the count increases, the horizontal ribs 19a, Since the members 81a and 83a are arranged on the top sides of the heads 5, 53 and 55, each rib 1
9, 81 and 83 improve the shot feeling of the face portions 9, 61 and 63, and strengthen the face portions 9, 61 and 63.

Also, in this embodiment, the longitudinal ribs 19b, 81b, 83b extending in the sole direction are made thinner as the iron count increases to a short iron, so that the mass is reduced.
As the count becomes higher, the center of gravity of the heads 53 and 55 becomes higher. As a result, the spin amount decreases and the flight distance increases in the head 5 having a smaller count, and as the head 55 becomes higher in count, more spin is applied to the ball. Will be taken.

Therefore, according to the golf club set according to the present embodiment, not only when the ball is hit in the sole area A of the sweet area, but also when the hit points vary from side to side or downward, the face increases as the count increases. Part 61,
The ball is often hit on the top side of 63, but each rib 1
9, 81, 83, a thin face portion 9, 61, 6
3 is improved, and the face portions 9 and 6 are improved.
1, 63 will be reinforced.

The golf club set according to the present embodiment also has no ribs 19, 81, and 8 because no useless ribs are provided in the top direction of the heads 5, 53, and 55.
By providing 3, the moment of inertia at the time of hitting the ball is not impaired. Also, a vertical rib 1 extending in the sole direction
9b, 81b, and 83b are made thinner and the mass is reduced as the iron count increases to a short iron, so that the center of gravity of the heads 53 and 55 becomes higher as the iron count rises. As a result, the spin amount decreases in the head 5 having a small iron count. As the flight distance increases and the head 55 on the higher count side becomes
A lot of spin was applied to the ball, making the golf club set easy to control.

The vertical positions of the horizontal ribs 19a, 81a, 83a and the masses of the vertical ribs 19b, 81b, 83b are changed every time the count is increased, and for example, for each type of long iron, middle iron, short iron and iron. It may be changed step by step, for example. Although not shown, a rib extending in the toe, heel direction and sole direction of the head from the position corresponding to the sweet spot on the face portion is provided on the back side of the face portion of the head as in the invention according to claim 7, According to the golf club set in which the mass of the rib extending toward the head is reduced as the count is increased, the center of gravity of the head is increased as the count is increased. The flight distance decreases and the flight distance increases,
In addition, the higher the head count, the more the spin is applied to the ball, so that the golf club set can be easily controlled.

Since no useless ribs are provided in the top direction of the head, which has less variation in hit points, the provision of the ribs does not impair the moment of inertia when hitting the ball.

[0035]

As described above, according to each of the golf clubs according to the first to fourth aspects, only the position corresponding to the sweet spot of the face portion is thicker than the conventional golf club. However, even if the hit point varies from side to side or downward after the sweet spot is removed, the shot feeling of the thin face portion is improved by the rib, and the strength of the face portion is improved.

Since no useless ribs are provided in the top direction of the head with less variation in hit points, the provision of the ribs does not impair the moment of inertia or the weight balance when hitting the ball. According to the golf club set according to claims 5 and 8, even if the hit points vary from side to side or downward, and the number of hits increases, the hits tend to hit on the top side of the face portion as the count increases. The shot feeling of the face is improved,
The face was reinforced.

Since no useless ribs are provided in the top direction of the head, the provision of the ribs does not impair the weight balance. Also,
According to the golf club set according to claims 6 and 7, since the rib extending in the sole direction is made thinner as the count increases to the short iron and the mass is reduced, the center of gravity of the head increases as the count increases, As a result,
Smaller heads reduced the amount of spin and increased the flight distance, and the higher the head, the more spin was applied to the ball, resulting in a golf club set that was easier to control.

[Brief description of the drawings]

FIG. 1 is a rear view of a golf club head according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is a rear view of a golf club head according to a second embodiment of the present invention.

FIG. 5 is a front view of the head of the golf club according to the first, second and fourth embodiments.

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is a rear view of the head of the middle iron according to one of the fifth, sixth, and eighth embodiments.

8 is a sectional view taken along line VIII-VIII in FIG.

FIG. 9 is a sectional view taken along line IX-IX of FIG. 7;

FIG. 10 is a rear view of a head of a short iron according to an embodiment of claims 5, 6, and 8;

11 is a sectional view taken along line XI-XI in FIG.

12 is a sectional view taken along line XII-XII in FIG.

FIG. 13 is an explanatory diagram of an effective hitting range in the sweet area of the golf club head.

[Explanation of symbols]

 5, 21, 41, 53, 55 Head 9, 25, 45, 61, 63 Face 11, 27, 47, 65, 67 Sole 13, 29, 69, 71 Back 15, 15, 73, 75 Peripheral edge 17, 33, 77, 79 Cavities 19, 35, 51, 81, 83 Ribs 39 Vibration absorber

Claims (8)

[Claims] 1. A golf club head comprising a rib provided on a back surface side of a face portion of a head, the rib extending from a position corresponding to a sweet spot of the face portion in a toe, heel direction and a sole direction of the head. 2. The head according to claim 1, wherein the rib extends in the toe, heel and sole directions of the head at least corresponding to the sole area of the sweet area including the sweet spot of the face portion. The golf club as described. 3. The golf club according to claim 1, wherein a cavity is formed in a back portion of the head, and the rib is provided in the cavity. 4. The golf club according to claim 1, wherein the head is formed in a hollow shape, and the rib is provided on a back side of the face portion in the hollow. 5. A rib extending from a position corresponding to a sweet spot of the face portion in a toe, heel direction and a sole direction of the head on a back surface side of the face portion of the head,
A golf club set, wherein ribs extending in the toe and heel directions are arranged on the top side of the head as the count increases. 6. The golf club set according to claim 5, wherein the mass of the rib extending in the sole direction decreases as the count increases. 7. A rib extending from a position corresponding to a sweet spot on the face portion in a toe, heel direction and a sole direction of the head is provided on a back surface side of the face portion of the head.
A golf club set wherein the mass of the rib extending in the sole direction is reduced as the count increases. 8. The head according to claim 5, wherein the rib extends in the toe, heel and sole directions of the head at least corresponding to the sole area of the sweet area including the sweet spot of the face portion. The golf club set according to claim 7.