JPH07246261A - Golf club head - Google Patents

Abstract

PURPOSE:To provide a golf club head which has been improved in flying distance of ball hitting and is stabilized in directivity of ball fitting by enhancing the rigidity of a ball fitting surface, such as face plate. CONSTITUTION:This golf club head is formed with a recessed part 33 exclusive of its peripheral edge in a back part 31 of a head body made of metal and is integrally provided with a supporting part 35 thinner than the peripheral edge between the opposite inside walls of the recessed part 33.

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 having a stable directionality of a hit ball and an improved flight distance.

[0002]

2. Description of the Related Art Generally, the head body of an iron club has a hosel portion, a sole portion, a face portion, etc. integrally formed with a metal such as soft iron or stainless steel to have a shape suitable for each count. In this type of head main body, it is known that the moment of inertia of the head main body is increased and the directionality of the hit ball is stabilized by forming a recess on the back portion side leaving the peripheral portion thereof. .

Therefore, recently, as shown in FIGS. 16 and 17, a through hole 2 and a fitting recess 3 are formed in the ball striking face of the metal head body 1 and the peripheral portion thereof, and the fitting recess 3 is formed.
An iron club (see Japanese Utility Model Publication No. 55-277) in which a thin face plate 4 having elasticity is fitted to form a concave portion 6 in the back portion 5 of the head body 1, or the head body 7 as shown in FIG. There has been proposed an iron club or the like in which a thin ball striking face 11 is integrally formed with a face portion 10 by forming a recessed portion 9 in the back portion 8 while leaving the peripheral edge portion thereof.

Thus, according to these iron clubs, the recesses 6 and 9 are formed in the back portions 5 and 8 while leaving the peripheral portions of the back portions 5 and 8, so that the weight is distributed to the peripheral portions of the head main bodies 1 and 7. Therefore, the moment of inertia of the head bodies 1 and 7 is increased, and the directionality of the hit ball is stabilized. However, on the other hand, a thin face plate 7 is attached to the through hole 2 formed in the head body 1 to form a recess 6 in the back portion 5 of the head body 1 or a recess 9 in the back portion 8. Since a thin and striking surface 11 is formed on the face portion 10,
In each of the above iron clubs, the face plate 7 and the ball striking face 11 may be destroyed due to lack of surface rigidity at the time of hitting the ball, and the lack of surface rigidity causes a drawback that the flight distance of the ball cannot be extended. .

On the other hand, in Japanese Utility Model Publication No. 59-12914, as shown in FIGS. 19 to 21, a concave portion 14 is provided in the back portion 13 of the head main body 12 while leaving the peripheral portion thereof, and the concave portion 14 is provided in the concave portion 14. , A rib-shaped weight portion 15 is provided from the top side peripheral portion to the sole side peripheral portion, and the weight portion 15 is provided from the long iron 16 to FIG.
There is disclosed an iron club set which is gradually provided from the toe side toward the heel side according to the middle iron 17 and the short iron 18 in FIG.

According to each of these iron clubs, the weight portion 15 improves the surface rigidity of the ball striking face, and
At the time of hitting the ball, the weight portion 15 holds the head body 12 at an appropriate inclination to prevent hooks and slices.

[0007]

However, since the weight portion 15 is formed to have the same thickness (height) as the peripheral portion on the back side, the weight portion 15 has a drawback that the weight is heavy. Therefore, in the head body 12, the head body 1 has the concave portion 14 on the back portion 13 side while leaving the peripheral portion thereof.
There is a drawback in that the weight is not dispersed to the peripheral portion of No. 2 and the moment of inertia becomes small, and as a result, the directionality of the hit ball deteriorates.

Of course, the weight portion 15 is located at a position corresponding to the sweet spot of the back portion 13 (in the present application, "a position corresponding to the sweet spot" is a position where a perpendicular line drawn from the sweet spot on the face portion of the head body intersects with the back portion). Say)
It is unclear about the provision of the above, and it is the fact that it cannot be expected to improve the flight distance of the hit ball because it does not enhance the surface rigidity of the exceptional sweet spot.

The present invention has been devised in view of the above circumstances, and improves the surface rigidity of a hitting surface such as a face plate to protect the hitting surface and improve the flight distance of the hitting ball, and at the same time, directivity of the hitting ball. It is an object of the present invention to provide a golf club head that is stable.

[0010]

In order to achieve such an object, a golf club head according to a first aspect of the present invention forms a concave portion in the back portion of a metal head body while leaving the peripheral portion thereof, and A support portion, which is thinner than the peripheral edge portion, is integrally provided between the opposing inner walls. The invention according to claim 2 is the golf club head according to claim 1, wherein the support portion is provided from the top side to the sole side of the head main body, and the invention according to claim 3 is The support portion is provided from the heel side to the toe side of the head body.

The invention according to claim 4 is the golf club head according to claim 2 or 3, characterized in that the support portion passes through a position corresponding to the sweet spot. The golf club head according to claim 4 is characterized in that the support portion is thicker than the other portions of the support portion at the sweet spot corresponding position. Furthermore, the invention according to claim 6 is the golf club head according to claim 2 or 4, wherein the support portion is widened toward the sole side, and the invention according to claim 7 is claim 3 or claim. Four
In the golf club head described above, the support portion is wide toward the toe side, and the invention according to claim 8 is the golf club head according to claim 1, wherein the support portion has a sweet spot. It is characterized in that it is provided from the top side to the sole side of the head body with the corresponding position sandwiched therebetween.

The invention according to claim 9 relates to claim 1
9. The golf club head according to claim 8, wherein the concave portion of the head main body has a lighter specific gravity than the head main body on the face portion side of the through hole provided from the face portion to the back portion of the head main body. It is characterized in that it is formed by mounting a face plate made of a material, and the support portion is in contact with the back side of the face plate.

[0013]

According to the golf club head according to each claim,
Since the supporting portion is thin despite the fact that the supporting portion is provided in the recess of the back portion, the weight of the head main body is distributed to the peripheral portion and the moment of inertia becomes large. Therefore, when a golf club equipped with such a golf club head is swung, the head body draws an accurate trajectory without blurring at the time of hitting due to the moment of inertia, and the directionality of the hitting ball is stable, and the supporting portion has a hitting surface such as a face plate. Support and reinforce.

The golf club head according to any one of claims 4 to 7, wherein the support portion passes through the sweet spot corresponding position, and the support portions are located on the heel side and the toe side of the sweet spot corresponding position. In this golf club head, the support portion supports and reinforces the hitting surface of the sweet spot. Further, in the invention according to claim 9, the supporting portion enhances the surface rigidity of the face plate and alleviates the bending at the time of hitting the ball, and the supporting portion forms the face plate in synchronization with the head body. Will be made.

[0015]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 4 show an embodiment of a golf club head according to claim 1, claim 2, claim 4, claim 5 and claim 9, in which 23 is an iron club formed of stainless steel. In the head main body 23, the hosel portion 25, the sole portion 27, the face portion 29, etc. are integrally formed with the head main body 23 as in the conventional case. Then, as shown in FIGS. 2 to 4, a recess 33 is provided in the back portion 31 of the head body 23, leaving the peripheral edge portion thereof, and further, the recess 33 extends from the top side to the sole side of the head body 23.
Between the inner walls facing each other, a rib-shaped support portion 35, which is thinner than the peripheral edge portion, is provided at the sweet spot corresponding position P (a perpendicular line drawn from the sweet spot S on the ball striking surface to the back portion 31 side of the head body 23 is the back portion 31). It is provided integrally with the head main body 23 through a position where it intersects with.

As shown in FIG. 3, the recess 33 has a through hole 37 extending from the face portion 29 to the back portion 31 in the head body 23, and the face portion 29 provided around the through hole 37. It is formed by fitting a thin face plate 41 made of titanium and having a uniform thickness into the fitting recess 39 on the side, and the back side (back surface) 41 'of the face plate 41 is supported by the above-mentioned support as shown in FIG. It is supported by abutting against the portion 35.

As shown in FIGS. 2 and 4, the support portion 35 is formed thick at the sweet spot corresponding position P, and thus the support portion 35 at the sweet spot corresponding position P is made thick. By making it thick, sweet spot S
The surface rigidity is increased. Further, as shown in FIG. 1, the outer shape of the face plate 41 is formed in the same shape as the fitting recess 39, and when the face plate 41 is fitted in the fitting recess 39, the face plate 41 is It is flush with the portion 29.
Then, a plurality of score line grooves 43 are formed on the surface thereof, and these score line grooves 43 impart spin to the ball.

As described above, in this embodiment, the through hole 37 is formed in the head body 23, and the through hole 37 is covered by the face plate 41 having a specific gravity smaller than that of the head body 23, and the peripheral portion of the back portion 31 is left. While forming the concave portion 33, a support portion 35 thinner than the peripheral portion is formed in the concave portion 33 through the sweet spot corresponding position P, and the support portion 35 is thick only at the sweet spot corresponding position P. Therefore, since the support portion 35 is thinner than the iron club shown in FIG. 19 and subsequent figures, the weight of the head main body 23 is dispersed to the peripheral portion despite the provision of the support portion 35, and the moment of inertia is large, Further, the surface rigidity of the sweet spot S is higher than that of the iron club shown in FIG.

Therefore, when the golf club equipped with the golf club head of this embodiment is swung, the head body 2
Since 3 draws an accurate trajectory without swaying at the time of hitting due to the moment of inertia, the directionality of the hitting ball is more stable than that of the conventional example shown in FIG. 19 and below, and the support portion 35 supports and reinforces the face plate 41 for sweetness. Since the surface rigidity of the spot S is increased, there is no possibility that the face plate 41 will be broken by the impact at the time of hitting, unlike the iron club shown in FIG.

Of course, the face plate 41 is uniformly formed so that the hitting surface and the back surface 41 'are parallel to each other, but the supporting portion 35 has a surface for supporting the face plate 41 hitting the face plate 41. Since the surface substantially parallel to the surface is formed, the face plate 41 can be efficiently supported and converted into repulsive energy. Therefore, in combination with the high surface rigidity of the sweet spot S, it becomes possible to secure a stable directionality of the hit ball and to extend the flight distance of the hit ball as compared with the conventional case.

Further, when the face plate 41 which is separate from the head body 23 is provided as described above, the face plate 4
As the first material, a highly elastic material suitable for hitting a ball can be selected, and since the head body 23 has the through hole 37, the repulsive characteristic peculiar to the material can be utilized. Further, the stress at the time of hitting the ball concentrates and causes a slight bending in the face plate 41. However, in the iron club head of FIG. 16 described above, the bending of the face plate 4 causes the peripheral portion of the face plate 4 to move. May be separated from the fitting recess 3 of the head body 1.

However, in this embodiment, the supporting portion 35 enhances the surface rigidity of the face plate 41 and alleviates the bending at the time of hitting the ball.
The face plate 41 is bent in synchronism with the above. Therefore, according to the present embodiment, the support portion 35 thus enhances the surface rigidity of the face plate 41 and alleviates the bending at the time of hitting the ball, and the support portion 35 is synchronized with the head main body 23 so as to synchronize with the face plate 41. By flexing, there is an advantage that peeling and damage can be more surely prevented.

FIGS. 5 to 7 show an embodiment of the golf club head according to claim 1, claim 2, claim 4, claim 6 and claim 9. In the figures, 45 is made of stainless steel. The head body of the iron club, the head body 45
Similarly to the head body 23, the hosel portion 47, the sole portion 49, the face portion 51 and the like are integrally formed, and the back portion 53 is provided with a recess 55 leaving the peripheral portion thereof.

Then, in the recess 55, the head main body 45
Between the inner walls of the recess 55 extending from the top side to the sole side, the rib-shaped support portion 57 is thinner than the peripheral portion and is formed to be gradually wider and thicker toward the sole side near the sweet spot corresponding position P. Are provided integrally with the head body 45. Thus, also in this embodiment, the recess 55
Is the face portion 51 to the back portion 53 as shown in FIG.
A through hole 59 is provided in the head body 45 over
It is formed by fitting the face plate 41 in the fitting recess 61 on the side of the face portion 51 provided around the through hole 59. As shown in FIG. 7, the back surface 41 ′ side of the face plate 41 is provided with the support portion 57. Is supported in contact with.

Also in this embodiment, the outer shape of the face plate 41 is formed in the same shape as the fitting recess 61, and when the face plate 41 is fitted in the fitting recess 61, the face portion 51 and the face portion 51 are formed. It is designed to be flush.
As described above, in this embodiment, instead of the support portion 35 shown in FIG.
In the recess 55, a head is provided with a rib-shaped support portion 57 that is thinner than the peripheral portion from the top side of the head main body 45 to the sole side and is formed to be gradually wider and thicker toward the sole side near the sweet spot corresponding position P. Since the support portion 57 is provided integrally with the main body 45, the support portion 57 is thinner than that of the iron club shown in FIG.
Despite the provision of No. 7, the weight is dispersed in the peripheral portion and the inertia moment of the head main body 45 is large, and the surface rigidity of the sweet spot S becomes larger than that of the iron club shown in FIG.

Therefore, when the golf club equipped with the golf club head of this embodiment is swung, the head body 4
Since the reference numeral 5 indicates an accurate trajectory by the moment of inertia without swaying at the time of hitting the ball, the directionality of the hitting ball is more stable and the supporting portion 57 supports the face plate 41 as compared with the conventional example shown in FIG. Since the surface rigidity of the sweet spot S is increased by the reinforcement, there is no possibility that the face plate 41 is broken by the impact at the time of hitting the ball, unlike the iron club shown in FIG.

Then, as in the above embodiment, the supporting portion 57 is formed.
Since the surface supporting the face plate 41 forms a surface substantially parallel to the ball striking face of the face plate 41, the face plate 41 can be efficiently supported and converted into repulsive energy. Therefore, in combination with the high surface rigidity of the sweet spot S, it becomes possible to secure a stable directionality of the hit ball and to extend the flight distance of the hit ball as compared with the conventional case.

Further, even in this embodiment, the head body 4
5 is provided separately from the face plate 41, a highly elastic material suitable for hitting can be selected as the material of the face plate 41, and the head body 45 has the through hole 59. The repulsive characteristic peculiar to the material can be utilized. Furthermore, the stress at the time of hitting the ball concentrates and the face plate 41 slightly bends.
7 enhances the surface rigidity of the face plate 41 and alleviates the bending at the time of hitting the ball, and the support portion 57 makes the head body 45
By flexing the face plate 41 in synchronism with the above, peeling and damage of the face plate 41 can be prevented more reliably.

8 to 10 show an embodiment of the golf club head according to claim 1, claim 3, claim 4, claim 7, and claim 9, in which 63 is formed of stainless steel. With the head body of the iron club, the head body 6
Also in 3, the hosel portion 65, the sole portion 67, the face portion 69 and the like are integrally formed, and the back portion 71 is provided with a recess 73 leaving the peripheral edge portion thereof.

In the recess 73, the head main body 63
Between the inner walls of the concave portion 73 facing each other from the heel side to the toe side, a rib-shaped support portion 75 that is gradually widened toward the toe side through the sweet spot corresponding position P is formed integrally with the head main body 63. It is provided. Thus, also in the present embodiment, the concave portion 73 has the head main body 63 extending from the face portion 69 to the back portion 71 as shown in FIGS. 9 and 10.
The through hole 77 is provided in the through hole 77, and the face plate 41 is fitted into the fitting recess 79 on the side of the face portion 69 provided around the through hole 77. As shown in FIG. The back surface 41 ′ side of 41 is abutted and supported by the support portion 75.

Also in this embodiment, the outer shape of the face plate 41 is formed in the same shape as the fitting recess 79, and the face portion 69 is fitted into the fitting recess 79 when the face plate 41 is fitted. It is supposed to be flush with.
Thus, in this embodiment, the back portion 71 of the head body 63 is
In the recess 73 provided on the side, the sweet spot corresponding position P
Since the rib-shaped support portion 75, which is gradually widened from the heel side to the toe side of the head main body 63 through the head main body 63, is provided integrally with the head main body 63, the iron club shown in FIG. In contrast, the weight of the head main body 63 is dispersed in the peripheral portion in spite of the provision of the support portion 75, and the moment of inertia is large, and the surface rigidity of the sweet spot S is larger than that of the iron club shown in FIG.

Therefore, when the golf club equipped with the golf club head of this embodiment is swung, the head body 6
In 3 because the moment of inertia draws an accurate trajectory without blurring when hitting the ball, the directionality of the hitting ball is stable, and the support portion 75 supports and reinforces the face plate 41 to enhance the surface rigidity of the sweet spot S. There is no fear that the face plate 41 will be broken due to the impact.

Also in this embodiment, since the surface of the supporting portion 75 which also supports the face plate 41 forms a surface substantially parallel to the ball striking face of the face plate 41, the face plate 41 can be efficiently moved. It can be supported and converted to repulsive energy. Therefore, in combination with the high surface rigidity of the sweet spot S, it becomes possible to secure a stable directionality of the hit ball and to extend the flight distance of the hit ball as compared with the conventional case.

Further, since the face plate 41 separate from the head main body 63 is provided, a highly elastic material suitable for hitting the ball can be selected as the material of the face plate 41, and the head main body 45 has the through hole 77. By having, it is possible to take advantage of the repulsive characteristic peculiar to the material. Furthermore, even if the stress at the time of hitting the ball is concentrated and the face plate 41 is slightly bent, the supporting portion 75 enhances the surface rigidity of the face plate 41 and alleviates the bending at the time of hitting the ball. Since the part 75 bends the face plate 41 in synchronization with the head body 63, peeling and damage of the face plate 41 can be prevented more reliably.

Of course, in the present embodiment, the supporting portion 7 is
5 is formed to be wider from the heel side to the toe side of the head main body 63, the supporting portion 75 is
It also has the effect of increasing the head speed. 11 and 12 show an embodiment of the golf club head according to claim 1, claim 2, claim 8 and claim 9, wherein 81 is a head body of an iron club formed of stainless steel, The head main body 81 is also integrally formed with the hosel portion 83, the sole portion 85, the face portion 87 and the like, and the back portion 89 is provided with a concave portion 91 leaving its peripheral edge portion.

In the recess 91, the head main body 81
Between the inner walls of the recessed portion 91 facing each other from the top side to the sole side of the two rib-shaped support portions 9 thinner than the peripheral edge portion.
3, 95 are integrally provided on the toe side and the heel side of the head main body 81 with the sweet spot corresponding position P interposed therebetween.
As shown in FIG. 12, the recess 91 is provided with a through hole 97 in the head body 81 from the face portion 87 to the back portion 89, and the face portion 8 provided around the through hole 97.
The back surface 4 of the face plate 41 is formed by fitting the face plate 41 into the fitting recess 99 on the 7 side.
The 1'side is abutted and supported by both supporting portions 93 and 95, respectively.

Also in this embodiment, the outer shape of the face plate 41 is formed in the same shape as the fitting recess 99, and when the face plate 41 is fitted into the fitting recess 99, the face plate 41 is 41 is flush with the face portion 87. As described above, this embodiment is different from the above-described embodiments in that the recess 91 of the back portion 89 is
Two thin rib-shaped support portions 93 and 95 are integrally provided on the toe side and the heel side across the sweet spot corresponding position P from the top side to the sole side of the head main body 81. Also, since the supporting portions 93 and 95 are thinner than those of the iron club shown in FIG. 19 and subsequent figures, the weight of the head main body 81 is dispersed to the peripheral portion in spite of the provision of the supporting portions 93 and 95, and inertia is increased. The moment is large,
The surface rigidity of the sweet spot S is increased by the supporting portions 93 and 95.

Therefore, when the golf club equipped with the golf club head of this embodiment is swung, the head body 8
Since No. 1 draws an accurate trajectory due to the moment of inertia without swaying at the time of hitting, the present embodiment also stabilizes the directionality of the hitting ball as compared with the conventional example shown in FIG. Since the surface rigidity of the sweet spot S is increased by supporting and reinforcing the face spot 41, there is no possibility that the face plate 41 is broken by the impact at the time of hitting the ball, unlike the iron club shown in FIG.

Also in this embodiment, since the supporting portions 93 and 95 also have a surface for supporting the face plate 41 that is substantially parallel to the ball striking surface of the face plate 41, the face can be efficiently used. The plate 41 can be supported and converted into repulsive energy. Therefore, in combination with the high surface rigidity of the sweet spot S, it becomes possible to secure a stable directionality of the hit ball and to extend the flight distance of the hit ball as compared with the conventional case.

Further, even in this embodiment, the head body 8
Since the face plate 41 which is separate from 1 is provided, a highly elastic material suitable for hitting can be selected as the material of the face plate 41, and the head body 81 has the through hole 97. The repulsive characteristic peculiar to the material can be utilized. Further, even if the stress at the time of hitting the ball is concentrated and the face plate 41 is slightly bent, the support portions 93 and 95 increase the surface rigidity of the face plate 41 and reduce the bending at the time of hitting the ball. In addition, the support portion 93,
95 is synchronized with the head main body 81 and the face plate 41
Therefore, the peeling and damage of the face plate 41 can be prevented more reliably.

13 to 15 show claims 1, 2 and 3.
An embodiment of the golf club head according to claim 4 and claim 5 is shown, and each of the embodiments described above is, for example, as shown in FIGS.
As shown in FIG. 3, a through hole 37 is formed in the head main body 23, and a face plate 41 having a smaller specific gravity than the head main body 23 is attached to the face portion 29 to form the recess 3
In this embodiment, the through hole is not provided in the head body, the recess is provided in the back portion of the head body, and a thin ball striking face is formed in the face portion.

The present embodiment will be described in detail below with reference to the drawings. In the figure, 101 is a head body of an iron club formed of stainless steel, and the head body 101 also has a hosel portion 103 and a sole portion as in the conventional case. 105, face portion 107, etc. are integrally formed. Further, as shown in FIG. 15, a recess 111 is formed in the back portion 109 of the head body 101, leaving the peripheral edge portion thereof, and thus by forming the recess 111 in the back portion 109 of the head body 101, A thin ball striking face 113 is integrally formed on the face portion 107.

On the back side of the ball striking face 113, that is, in the recess 111, between the inner walls of the recess 111 extending from the top side to the sole side of the head main body 101, a rib shape thinner than the peripheral edge is formed. Support 115 is provided integrally with the head body 101 through the sweet spot corresponding position P. The support portion 115 is formed thick at the sweet spot corresponding position P, and by making the support portion 115 at the sweet spot corresponding position P thick as described above, the sweet spot S is formed. The surface rigidity is large.

Thus, in this embodiment, the head body 101
The concave portion 111 is formed in the back portion 109 of the face portion 1
07, a thin ball striking face 113 is formed, and a supporting portion 115, which is thinner than the peripheral edge portion, is integrally provided in the concave portion 111 from the top side to the sole side of the head main body 101. Since only the sweet spot corresponding position P is thicker at 115, the weight of the head main body 101 is dispersed to the peripheral edge portion and the inertia of the head main body 101 is dispersed, even though the support portion 115 is provided, as in the embodiment shown in FIG. The moment is large, and the surface rigidity of the sweet spot S is increased by the support portion 115 as compared with the iron club shown in FIG.

Therefore, when the golf club equipped with the golf club head of this embodiment is swung, the head body 1
Since 01 draws an accurate trajectory due to the moment of inertia without hitting when hitting a ball, according to this embodiment, the directionality of the hitting ball is more stable than in the conventional example shown in FIG. Since the surface rigidity of the sweet spot S is increased by strengthening the surface of the sweet spot S, there is no fear that the hitting surface 113 will be broken by the impact at the time of hitting the ball as in the conventional example shown in FIG. 18, and the surface rigidity of the sweet spot S is also high. It is now possible to secure a stable directionality of the hit ball and extend the flight distance of the hit ball compared to the conventional one.

[0046]

As described above, according to the golf club head according to each of the claims, even though the supporting portion is provided, since the supporting portion is thin, the weight of the head main body is dispersed in the peripheral portion. The moment of inertia of the head body is large,
Further, by providing the supporting portion, the surface rigidity of the ball striking face such as the face plate is increased as compared with the conventional case.

Therefore, when a golf club equipped with the golf club head according to each claim is swung, the head body draws an accurate trajectory without swaying when hitting the ball due to the moment of inertia, and the directionality of the hitting ball is stable, and the supporting portion is stable. Since it reinforces the hitting surface of the face plate etc. to increase its surface rigidity, there is no risk of the hitting surface being destroyed by the impact at the time of hitting the ball, and the high surface rigidity also improves the flight distance of the hitting ball. Became.

The golf club head according to any one of claims 4 to 7, wherein the support portion passes through the sweet spot corresponding position, and the support portions are located on the heel side and the toe side of the sweet spot corresponding position. In the golf club head of No. 2, since the surface rigidity of the sweet spot is high, the flight distance of the hit ball is further improved. Furthermore, claim 9
If a face plate separate from the head body is used as in the golf club head according to the present invention, a highly elastic material suitable for hitting a ball can be selected as the material of the face plate, and the head body has a through hole. By doing so, there is an advantage that the repulsive characteristic peculiar to the material can be utilized.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of a golf club head according to claim 1, claim 2, claim 4, claim 5, and claim 9.

FIG. 2 is a rear view of the golf club head shown in FIG.

3 is a sectional view taken along line III-III in FIG.

4 is a sectional view taken along line IV-IV in FIG.

5 is a rear view of an embodiment of the golf club head according to claim 1, claim 2, claim 4, claim 6 and claim 9. FIG.

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

7 is a sectional view taken along line VII-VII of FIG.

8 is a front view of an embodiment of the golf club head according to claim 1, claim 3, claim 4, claim 7, and claim 9. FIG.

9 is a rear view of the golf club head shown in FIG.

10 is a cross-sectional view taken along line XX of FIG.

FIG. 11 Claim 1, Claim 2, Claim 8 and Claim 9
FIG. 6 is a rear view of an example of the golf club head according to the present invention.

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

FIG. 13 Claim 1, Claim 2, Claim 4 and Claim 5
FIG. 6 is a rear view of an example of the golf club head according to the present invention.

14 is a sectional view taken along line XIV-XIV in FIG.

15 is a sectional view taken along line XV-XV in FIG.

FIG. 16 is an exploded perspective view of a conventional golf club head.

17 is a sectional view of the golf club head shown in FIG.

FIG. 18 is a cross-sectional view of another conventional golf club head.

FIG. 19 is a rear perspective view of still another conventional golf club head.

FIG. 20 is a rear perspective view of a conventional golf club head.

FIG. 21 is a rear perspective view of a conventional golf club head.

[Explanation of symbols]

 23, 45, 63, 81, 101 Head body 27, 49, 67, 85, 105 Sole part 29, 51, 69, 87, 107 Face part 31, 53, 71, 89, 109 Back part 33, 55, 73, 91,111 concave part 35,57,75,93,95,115 support part 37,59,77,97 through hole 39,61,79,99 fitting concave part 41 face plate 113 striking surface

Claims (9)

[Claims] 1. A back part of a metal head main body is formed with a recess, leaving a peripheral part thereof, and a support part thinner than the peripheral part is integrally provided between opposed inner walls of the recess. A characteristic golf club head. 2. The golf club head according to claim 1, wherein the support portion is provided from the top side to the sole side of the head main body. 3. The support portion is provided from the heel side to the toe side of the head main body.
Golf club head described 4. The golf club head according to claim 2, wherein the support portion passes through a position corresponding to the sweet spot. 5. The golf club head according to claim 4, wherein the support portion is thicker at a position corresponding to the sweet spot than other portions of the support portion. 6. The golf club head according to claim 2, wherein the support portion is wider toward the sole side. 7. The golf club head according to claim 3, wherein the support portion is widened toward the toe side. 8. The golf club head according to claim 1, wherein the support portion is provided from the top side to the sole side of the head main body with the sweet spot corresponding position interposed therebetween. 9. The recessed portion of the head body is formed by mounting a face plate made of a material having a lower specific gravity than the head body on the face portion side of a through hole provided from the face portion to the back portion of the head body. 9. The golf club head according to claim 1, wherein the support portion is in contact with the back side of the face plate.