JP2002052100A - Golf club head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a golf club head allowing lowering of its center of gravity through the secure fixing of a head body to a tungsten alloy sole serving also as weight member, and also allowing optimum adjustments of weight distributions which differ slightly between a toe part and a heel part. SOLUTION: The golf club head 1 has a recess part 5B formed in the sole surface 5A of the sole part 5 of the head body 1A and has an opening 5D formed through the bottom face 5C of the recess part 5B. A protrusion 6A matching the shape of the opening 5D is formed integrally with the tungsten alloy sole 6. Further, the sole 6 is fitted into the recess part 5B and the protrusion 6A is inserted into the opening 5D; a space between the head body 1A and the sole 6 is secured in place by soldering, adhesion or fusion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an improvement in a golf club head.

[0002]

2. Description of the Related Art Conventionally, golf club heads have been made of a metallic material such as soft iron or stainless steel. Recently, however, pure titanium, a titanium alloy, an aluminum alloy, a magnesium alloy or the like having a low density has been used as a material. As a result, golf can be designed with a greater degree of freedom in terms of weight, to increase the volume of the head itself, or to install a mass member for partially applying a weight load to improve the performance of golf. Club heads are known.

For example, as disclosed in JP-A-6-154467, JP-A-8-24379, and JP-A-11-128415, a mass member made of a material having a higher density than the material of the head body is mounted. By,
Golf club heads for increasing the moment of inertia of the head to increase the launch angle of the golf ball and for improving the stability of the head when hitting a ball are already known.

[0004] When mounting the weight member on the head body, a method of fixing the weight member is as follows.
The following method was adopted.

That is, as disclosed in Japanese Patent Application Laid-Open No. HEI 6-154467, a shaft portion for fixing to a sole plate and a flat portion which is flush with the surface of the plate are provided. Manufactured by the lost wax precision casting method, a chip for adjusting the position of the center of gravity of the golf club, and a plate manufactured by the lost wax precision casting method and having a hole into which the chip is inserted, and formed in the hole of the plate. A golf club sole plate is known, which is fixed to a plate by using the axis of the chip fitted and fitted, and plastically fixed around the hole of the plate so as to press the front side of the plate against the chip. I have.

Further, as disclosed in Japanese Patent Application Laid-Open No. H8-24379, a flange extending rearward of the head main body is provided on the periphery of the back of the head main body so as to protrude longer than its wall thickness. There is known a golf club head in which a cavity is formed in a portion and a weight member made of a material having a higher density than the head body is mounted on an outer peripheral surface of a flange portion.

Further, as disclosed in Japanese Patent Application Laid-Open No. 11-128415, a groove is formed in the bottom surface of the sole wall of the head body, and a through hole penetrating from the ceiling surface of the groove through the sole wall. The head body is formed by forming a hole and integrally forming a projection with the weight member, further fitting the weight member into the concave groove, inserting the projection into the through hole, and crushing and plastically deforming the projection. A golf club head having a weight member fixed thereto is also known.

[0008]

However, the method disclosed in Japanese Patent Application Laid-Open No. 6-154467 adjusts the position of the center of gravity of a golf club manufactured by a lost wax precision casting method using a higher density material than a sole plate. Since the chip is manufactured by a lost wax precision casting method, and the chip itself for adjusting the position of the center of gravity of the golf club is manufactured by the lost wax precision casting method, since the chip is configured by a plate having a hole into which the chip is inserted. Therefore, as a metal material that can be used in the lost wax precision casting method,
Titanium alloys, aluminum alloys, stainless steels and the like are generally known, but their density is about ρ = 4.5 to 8.5.
As a chip for adjusting the position of the center of gravity of a golf club, the density is too low.

Further, as disclosed in Japanese Patent Application Laid-Open No. H8-24379, a flange extending rearward of the head main body is provided on the periphery of the back of the head main body so as to protrude longer than its wall thickness. The golf club head, which has a cavity formed in the part and a weight member made of a material having a higher density than the head body is mounted on the outer peripheral surface of the flange, can exhibit a moderate performance as an iron club head, As a wood club head with different performance,
It was not immediately possible to implement with a similar structure.

Further, as disclosed in Japanese Patent Application Laid-Open No. 11-128415, a groove is formed in the bottom surface of the sole wall of the head body, and a through hole penetrating the sole wall from the ceiling surface of the groove. The head body is formed by forming a hole and integrally forming a projection with the weight member, further fitting the weight member into the concave groove, inserting the projection into the through hole, and crushing and plastically deforming the projection. In the golf club head having the weight member fixed thereto, the protrusion is inserted into the through hole if the gap between the diameter of the through hole passing through the sole wall and the outer diameter of the protrusion of the weight member does not match, and the protrusion is inserted. There is a problem that a gap is formed when crushed plastically deforms the golf club, and the gap causes noise in the golf club itself during use.

Further, particularly in these conventionally known methods, most of the weight members are adjusted by using one kind of metal material, so that the club head is completed, and the toe portion and the heel portion are delicate. However, there is a basic problem that it is difficult to adjust and adjust different weight distributions.

In view of the above, the present invention solves the above-mentioned conventional problems by firmly fixing the head main body and the tungsten alloy sole also serving as a weight member, thereby enabling a low center of gravity, and further, a toe portion and a heel portion. It is an object of the present invention to provide a golf club head that optimally adjusts a slightly different weight distribution in each section.

[0013]

In order to achieve the above object, a golf club head according to the present invention has a concave portion formed in a sole surface of a sole portion of a head body and an opening penetrating a bottom surface of the concave portion. Forming, integrally forming a protrusion matching the shape of the opening in the tungsten alloy sole, further fitting the tungsten alloy sole in the recess, and inserting the protrusion into the opening, Brazing the gap between the head body and the tungsten alloy sole,
A golf club head which is fixed by bonding, welding, caulking, and press-fitting.

[0014]

DETAILED DESCRIPTION OF THE INVENTION A golf club head according to claim 1 of the present invention is a golf club head comprising a face portion, a crown portion, a hosel portion and a sole portion. A concave portion is formed on the sole surface of the sole portion of the main body, an opening is formed through the bottom surface of the concave portion, and a projection conforming to the shape of the opening is integrally formed on the tungsten alloy sole. While fitting the tungsten alloy sole in, and inserting the protrusion into the opening, brazing the gap between the head body and the tungsten alloy sole,
A golf club head which is fixed by bonding, welding, caulking, and press-fitting.

According to a second aspect of the present invention, there is provided a golf club head comprising a face portion, a crown portion, a hosel portion, and a sole portion. And forming an opening penetrating the bottom surface of the concave portion, the tungsten alloy sole conforming to the shape of the concave portion, and integrally forming a protrusion conforming to the shape of the opening portion, The tungsten alloy sole was fitted into the recess, the protrusion was inserted into the opening, and the gap between the head body and the tungsten alloy sole was brazed, adhered, welded, caulked, and press-fitted. A golf club head characterized in that:

According to a third aspect of the present invention, there is provided a golf club head comprising a face portion, a crown portion, a hosel portion, and a sole portion, wherein a concave portion is formed on a sole surface of the sole portion of the head body. And forming a plurality of through-holes penetrating the bottom surface of the recess, integrally forming a projection matching the shape of the through-hole on the tungsten alloy sole matching the shape of the recess. While fitting the tungsten alloy sole into the through hole, inserting the protrusion into the through hole, brazing the gap between the head body and the tungsten alloy sole,
A golf club head which is fixed by bonding, welding, caulking, and press-fitting.

According to a fourth aspect of the present invention, there is provided a golf club head comprising a face portion, a crown portion, a hosel portion, and a sole portion, wherein a plurality of golf club heads are provided on the sole surface of the sole portion of the head body. And forming a plurality of through-holes penetrating the bottom surface of the concave portion, the tungsten alloy sole conforming to the shape of the concave portion, and integrally forming a projection matching the shape of the through-hole, Further, the tungsten alloy sole is fitted into the recess, and the projection is inserted into the through hole, and the gap between the head body and the tungsten alloy sole is brazed, adhered, welded, caulked, and press-fitted. It is a golf club head which is fixed.

According to a fifth aspect of the present invention, there is provided a golf club head comprising a face portion, a crown portion, a hosel portion, and a sole portion, wherein a concave portion is formed in a sole surface of the sole portion of the head body. Forming and fitting the tungsten alloy sole conforming to the shape of the recess, brazing the gap between the head body and the tungsten alloy sole, bonding, welding, caulking, press fitting,
A golf club head characterized in that the golf club head is fixed by the following.

According to a sixth aspect of the present invention, there is provided a golf club head comprising a face portion, a crown portion, a hosel portion, and a sole portion, wherein a plurality of pieces are provided on the sole surface of the sole portion of the head body. The tungsten alloy sole conforming to the shape of the concave part was fitted, and the gap between the head body and the tungsten alloy sole was brazed, adhered, welded, caulked, pressed and fixed. It is a golf club head characterized by the following.

According to a seventh aspect of the present invention, there is provided a golf club head comprising a face portion, a crown portion, a hosel portion, and a sole portion, wherein the sole portion has a sole area of 50% or more and 100% or more. %. A golf club head characterized in that a tungsten alloy sole is mounted in a range corresponding to at most%.

Further, in the golf club head according to claim 8 of the present invention, the tungsten alloy sole has a density of 10%.
A golf club head characterized in that it is formed into a predetermined sole shape by machining a material which has been sintered and formed so as to have a size of 20 or less.

In a golf club head according to a ninth aspect of the present invention, the tungsten alloy sole has a shape of a sintered pre-sole member having a radius of curvature on the sole surface side and the sole back side of 50 to 50%. A golf club head formed in a shape having a 150 mm round.

In a golf club head according to a tenth aspect of the present invention, the tungsten alloy sole has a thickness of 1 mm or more and 5 m or more as a thickness of a sintered pre-sole member.
m or less.

In the golf club head according to the eleventh aspect of the present invention, the weight of the tungsten alloy sole is formed so as to correspond to 30% to 60% of the weight of the completed head body. Golf club head.

Further, in the golf club head according to a twelfth aspect of the present invention, the tungsten alloy sole is configured to have a different weight or composition on the outer surface side of the sole portion or on the inner surface side of the sole portion of the head body. A golf club head characterized in that:

According to a thirteenth aspect of the present invention, in the golf club head according to the thirteenth aspect, the tungsten alloy sole is configured to have a different weight or composition on the toe side or the heel side of the head body. Golf club head.

[0027]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a perspective view showing one embodiment of a golf club head according to the present invention. FIGS. 2 to 11 show one embodiment of a golf club head according to the present invention. FIG. 12 is an assembled perspective view of a main part cross section.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a golf club head according to an embodiment of the present invention as viewed from a sole portion side, showing a form of the embodiment;

That is, as shown in FIGS. 1 and 2, the golf club head 1 of the present invention has a concave portion 5B formed on a sole portion surface 5A of a sole portion 5 of a head body 1A and a bottom surface 5C of the concave portion 5B. 5D that penetrates the tungsten alloy sole, and a projection 6A that matches the shape of the opening 5D is formed integrally with the tungsten alloy sole 6;
In addition to fitting the tungsten alloy sole 6 therein, the protrusion 6A is inserted into the opening 5D, and the gap between the head body 1A and the tungsten alloy sole 6 is brazed, and fixed by bonding and welding. It is a golf club head 1 which is a feature.

As shown in FIGS. 3 to 11, a plurality of recesses 5B and 5b are formed in a sole surface 5A of a sole portion 5 of a head body 1A, and bottom surfaces 5C and 5c of the recesses 5B and 5b. Are formed integrally with the tungsten alloy sole 6 conforming to the shape of the recesses 5B, 5b, and the projections 6A, 6a conforming to the shape of the openings 5D, 5d. Further, the concave portion 5B,
5b, the tungsten alloy sole 6 is fitted into the opening 5D, and the protrusions 6A, 6a are inserted into the openings 5D, 5d.
The golf club head 1 is characterized in that the gap is fixed by brazing, bonding, welding, caulking, and press-fitting.

In the embodiments shown in FIGS. 2 and 3, from the viewpoint of workability, the protrusions 6A, 6A are formed in the openings 5D, 5d.
a, and the method of brazing the gap between the head main body 1A and the tungsten alloy sole 6 and fixing it by adhesion and welding is the most efficient. However, the protrusions 6A and 6a inserted into these openings 5D and 5d are used. It is also possible to fix by caulking or press fitting.

As shown in FIG. 4, a concave portion 5B is formed in the sole surface 5A of the sole portion 5 of the head body 1A, and a plurality of through holes 5E are formed through the bottom surface 5C of the concave portion 5B. A projection 6D conforming to the shape of the through hole 5E is integrally formed with the tungsten alloy sole 6 conforming to the shape of the recess 5B. Further, the tungsten alloy sole 6 is fitted into the recess 5B, and the through hole is formed. 5E
The golf club head 1 is characterized in that the protrusions 6D are inserted into the head body 1A, and the gap between the head body 1A and the tungsten alloy sole 6 is brazed and fixed by bonding, welding, caulking, or press-fitting.

As shown in FIG. 5, a plurality of recesses 5B, 5b are formed in the sole surface 5A of the sole portion 5 of the head main body 1A, and a through hole penetrating through the bottom surfaces 5C, 5c of the recesses 5B, 5b. A plurality of holes 5E and 5e are formed,
B, 5b, the projections 6D, 6d conforming to the shapes of the through holes 5E, 5e are integrally formed with the tungsten alloy sole 6, and the recesses 5B, 5b
The tungsten alloy sole 6 is fitted therein, and the protrusions 6D, 6d are inserted into the through holes 5E, 5e,
The golf club head 1 is characterized in that a gap between the head body 1A and the tungsten alloy sole 6 is fixed by brazing, bonding, welding, caulking, or press-fitting.

In the embodiments shown in FIGS. 4 and 5, from the viewpoint of workability, the projections 6D, 6D are formed in the through holes 5E, 5e.
d is inserted and the protrusions 6D, 6d are crushed, and the gap between the head body 1A and the tungsten alloy sole 6 is brazed and fixed by bonding, welding, caulking, or press-fitting.

In connection with the present invention, the projection 6D formed on the tungsten alloy sole 6 can be arranged on the toe portion side or the heel side as shown in FIG. It is also possible to arrange the small projections 6E on the face side and the back face side. As described above, since the protrusion 6D formed on the tungsten alloy sole 6 is arranged on the toe portion side or the heel side and the shape of the protrusion 6D is enlarged, the weight distribution of the head itself can be arranged on the toe and heel. In addition, it is possible to prevent right and left deviations in the hitting direction of the golf ball.

By arranging the small projections 6E formed on the tungsten alloy sole 6 on the face portion side and the back face portion side, the weight distribution of the toe and heel can be finely adjusted. In addition to the above, the small protrusions 6E function as guide stoppers to facilitate positioning when the tungsten alloy sole 6 is fitted into the opening 5D of the head body 1A. To play.

Further, as shown in FIG. 6, the head main body 1A
A concave portion 5B is formed in a sole surface 5A of the sole portion 5, and the tungsten alloy sole 6 conforming to the shape of the concave portion 5B is fitted, and a gap between the head body 1A and the tungsten alloy sole 6 is brazed, A golf club head 1 fixed by adhesion and welding.

Further, as shown in FIG. 7, the head main body 1A
The recesses 5B and 5b are formed in the sole surface 5A of the sole portion 5 and the tungsten alloy sole 6 conforming to the shapes of the recesses 5B and 5b is fitted into the sole 5 so that the gap between the head body 1A and the tungsten alloy sole 6 Brazing, gluing,
A golf club head 1 fixed by welding.

8 and 9 relate to a golf club head according to the present invention. The tungsten alloy sole has a weight on the outer surface side 6F through the inner surface 6G of the sole portion of the head body. Or a golf club head characterized in that the composition is different.

For example, by placing a tungsten alloy sole on the outer surface side 6F of the sole body of the head body with a material having a higher specific gravity, the center of gravity can be reduced, the launch angle of the hit golf ball is high, and the flight distance is increased. It can provide golf clubs for beginners and intermediate players.

FIGS. 10 and 11 relate to a golf club head according to the present invention. The tungsten alloy sole has a weight or a composition at the toe portion 7 or the heel portion 8 side of the head body. A golf club head characterized in that it is configured differently.

For example, by placing a tungsten alloy sole with a material having a higher specific gravity on the side of the toe portion 7 or the side of the heel portion 8 of the head main body, a balance design of the toe and heel can be achieved and the flying direction angle of the hit golf ball can be reduced. It is possible to provide a golf club for beginners and intermediate players who are stable and hard to get out of OB.

On the other hand, in the tungsten alloy sole,
By arranging a material having a higher specific gravity on either the toe portion 7 side or the heel portion 8 side of the head body, the degree of freedom in the balance design of the toe and heel is improved. The golf ball for advanced golfers can be provided because a sliced ball can be hit in an illusionary manner.

Further, as the tungsten alloy sole 6 of the present invention, a tungsten alloy sole having various densities by using a metal material such as nickel, copper, stainless steel, iron or aluminum as the composition of the tungsten alloy itself. 6 can be formed.

That is, Table 1 shows an example of the metal composition and the compounding ratio of the alloy when a tungsten alloy sole having a density of 10 to 18 is produced.

In Table 1, W is tungsten, Ni is nickel, Cu is copper, and 316L is stainless steel (SUS).
Is represented.

[0047]

[Table 1]

The golf club head 1 is characterized in that the tungsten alloy sole 6 is formed into a predetermined sole shape by machining a material formed by sintering so that the density becomes 10 or more and 20 or less. It is.

Further, the tungsten alloy sole 6 according to the present invention has a shape of a pre-sole member 6A formed by sintering, and has a shape of a sole outer surface 6F and a sole inner surface 6F.
A golf club head 1 formed in a shape having a round having a radius of curvature of G of 50 to 150 mm.
However, in this way, by forming a round substantially matching the sole shape of the head body as the shape of the pre-sole member 6H, the polishing and cutting steps in the subsequent steps can be considerably simplified, Work efficiency and production cost can be reduced.

The tungsten alloy sole 6 according to the present invention is a golf club head 1 characterized in that the sintered pre-sole member 6H is formed to have a thickness of 1 mm or more and 5 mm or less. By setting such a thickness, the effect of lowering the position of the center of gravity of the head main body is great, and the purpose of lowering the center of gravity is achieved. On the other hand, if the thickness of the pre-sole member 6H is 5 mm or more, the weight distribution design of the head main body itself becomes impossible, and commercialization cannot be performed.

Similarly, the weight of the tungsten alloy sole 6 according to the present invention is 3% of the weight of the completed head body.
The golf club head 1 is formed so as to correspond to 0% to 60%.

As described above, the tungsten alloy sole 6 according to the present invention is a metal having a higher density than the metal constituting the head body 1A, and is less likely to be plastically deformed than the material of the head body 1A. Since it is a material that is extremely high in wear resistance, when used as a sole member, the center of gravity of the head itself can be made lower, so that the ball is easy to hit, and the ball is easy to hit for beginners who have started golf. It is possible to provide a golf club head which can easily fly.

For an intermediate or advanced player who enjoys playing many times, the golf club head itself has a low center of gravity at the time of addressing, so that there is a sense of stability and a stable ball can be hit. Since the tungsten alloy sole 6 has the above-mentioned effects and has high wear resistance, the durability of the golf club head itself is remarkably improved.

[0054]

As described above, in the tungsten alloy sole according to the present invention, the metal is higher in density than the metal constituting the head main body, and is less likely to be plastically deformed than the material of the head main body. In addition, when used as a sole member, the center of gravity of the head itself can be made lower and the ball is easy to hit because it is a material with extremely high abrasion resistance. It is possible to provide a golf club head having an effect that the distance is easily increased.

For an intermediate or advanced player who enjoys playing many times, the golf club head itself has a low center of gravity at the time of addressing. Since the tungsten alloy sole has the above effects and high wear resistance, it has the effect of significantly improving the durability of the golf club head itself.

The present invention has the above-mentioned remarkable effects.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a golf club head according to the present invention.

FIG. 2 is an assembled perspective view of a main part showing an embodiment of the golf club head according to the present invention.

FIG. 3 is an assembled perspective view of an essential part showing an embodiment of the golf club head according to the present invention.

FIG. 4 is an assembled perspective view of an essential part showing an embodiment of the golf club head according to the present invention.

FIG. 5 is an assembled perspective view of an essential part showing an embodiment of the golf club head according to the present invention.

FIG. 6 is a sectional perspective view of a main part showing an embodiment of a golf club head according to the present invention.

FIG. 7 is an assembled perspective view of an essential part showing an embodiment of the golf club head according to the present invention.

FIG. 8 is an assembled perspective view of a relevant part showing one embodiment of the golf club head according to the present invention.

FIG. 9 is an assembled perspective view of an essential part showing an embodiment of the golf club head according to the present invention.

FIG. 10 is an assembled perspective view of an essential part showing an embodiment of the golf club head according to the present invention.

FIG. 11 is a sectional perspective view of a main part showing an embodiment of a golf club head according to the present invention.

FIG. 12 is a perspective view showing one embodiment of the golf club head according to the present invention, as viewed from a sole portion side.

FIG. 13 is a perspective view showing another embodiment of the tungsten alloy sole of the golf club head according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 golf club head 1A head body 2 face portion 3 crown portion 4 hosel portion 5 sole portion 5A sole portion surface 5B concave portion 5b concave portion 5C bottom surface 5c bottom surface 5D opening 5d opening 5E through hole 5e through hole 6 tungsten alloy sole 6A projection 6a Projection 6B Projection 6b Projection 6C Projection 6D Projection 6d Projection 6E Small Projection 6F Sole Outer Side 6G Sole Inner Side 6H Pre-Sole Member 7 Toe 8 Heel 9 Groove 10 Backface

Claims (13)

[Claims] 1. A face part (2), a crown part (3),
In a golf club head (1) comprising a hosel part (4) and a sole part (5), a head body (1) is provided.
A) A concave portion (5) is formed in the sole surface (5A) of the sole portion (5).
B) and the bottom surface (5C) of the concave portion (5B).
An opening (5D) is formed through the tungsten alloy sole (6), and a projection (6A) conforming to the shape of the opening (5D) is formed integrally with the tungsten alloy sole (6).
B), the tungsten alloy sole (6) is fitted therein, and the projection (6A) is inserted into the opening (5D) to form a gap between the head body (1A) and the tungsten alloy sole (6). A golf club head (1) characterized by being fixed by brazing, bonding, welding, caulking, press fitting or the like. 2. A face part (2), a crown part (3),
In a golf club head (1) comprising a hosel part (4) and a sole part (5), a head body (1) is provided.
A) A plurality of recesses (5B) and (5b) are formed in the sole surface (5A) of the sole portion (5) of (A) and the recesses (5B).
The opening (5) penetrating the bottom surface (5C) (5c) of (5b)
D) The tungsten alloy sole (6) that forms (5d) and matches the shape of the recesses (5B) and (5b), and the protrusion (6) that matches the shape of the openings (5D) and (5d).
A) (6a) is integrally formed, and the concave portion (5B)
(5b) The tungsten alloy sole (6) is fitted into the opening (5D) (5d), and the protrusions (6A) and (6a) are inserted into the openings (5D) and (5d). A golf club head (1) wherein a gap with the sole (6) is fixed by brazing, bonding, welding, caulking, press-fitting, or the like. 3. A face part (2), a crown part (3),
In a golf club head (1) comprising a hosel part (4) and a sole part (5), a head body (1) is provided.
A) A concave portion (5) is formed in the sole surface (5A) of the sole portion (5).
B) and the bottom surface (5C) of the concave portion (5B).
And a plurality of through holes (5E) penetrating through the recesses (5E).
The protrusion (6) conforming to the shape of the through hole (5E) is provided on the tungsten alloy sole (6) conforming to the shape of B).
D), the tungsten alloy sole (6) is fitted into the recess (5B), and the projection (6D) is inserted into the through hole (5E) to form the head body ( 1A) A golf club head (1) characterized in that a gap between the tungsten alloy sole (6) and the tungsten alloy sole (6) is fixed by brazing, bonding, welding, caulking, or press-fitting. 4. A face part (2), a crown part (3),
In a golf club head (1) comprising a hosel part (4) and a sole part (5), a head body (1) is provided.
A) A plurality of recesses (5B) and (5b) are formed in the sole surface (5A) of the sole portion (5) of (A) and the recesses (5B).
A through hole (5) penetrating through the bottom surface (5C) and (5c) of (5b)
E) A plurality of (5e) are formed, and the concave portions (5B) and (5b) are formed.
The tungsten alloy sole conforming to the shape of the above (6)
And the protrusions (6D) and (6d) conforming to the shapes of the through holes (5E) and (5e) are integrally formed, and further, the tungsten alloy sole (6) is formed in the recesses (5B) and (5b).
And the protrusions (6D) and (6d) are inserted into the through holes (5E) and (5e), and the head body (1) is inserted.
A golf club head (1) characterized in that a gap between (A) and the tungsten alloy sole (6) is fixed by brazing, bonding, welding, caulking, press-fitting. 5. A face part (2), a crown part (3),
In a golf club head (1) comprising a hosel part (4) and a sole part (5), a head body (1) is provided.
A) A concave portion (5) is formed in the sole surface (5A) of the sole portion (5).
B) and fitting the tungsten alloy sole (6) conforming to the shape of the recess (5B), brazing the gap between the head body (1A) and the tungsten alloy sole (6) and bonding A golf club head (1) fixed by welding, crimping, press-fitting. 6. A face part (2), a crown part (3),
In a golf club head (1) comprising a hosel part (4) and a sole part (5), a head body (1) is provided.
A) A plurality of recesses (5B) and (5b) are formed in the sole surface (5A) of the sole portion (5) of (A) and the recesses (5B).
The tungsten alloy sole (6) conforming to the shape of (5b) is fitted, and a gap between the head body (1A) and the tungsten alloy sole (6) is brazed, adhered, welded,
A golf club head (1) fixed by caulking or press-fitting. 7. A face part (2), a crown part (3),
In a golf club head (1) comprising a hosel part (4) and a sole part (5), a tungsten alloy sole (6) is formed in a range corresponding to 50% or more and 100% or less of a sole area of the sole part (5). 7. The golf club head (1) according to claim 1, wherein the golf club head (1) is mounted. 8. The tungsten alloy sole (6)
The material formed by sintering so as to have a density of 10 or more and 20 or less is formed into a predetermined sole shape by machining. The golf club head according to the above (1). 9. The tungsten alloy sole (6)
The shape of the pre-sole member (6H) formed by sintering is as follows: the outer surface side (6F) of the sole portion and the inner surface side (6H) of the sole portion.
G) is formed in a shape having a round having a radius of curvature of 50 to 150 mm.
The golf club head (1) according to 4, 5, or 6. 10. The tungsten alloy sole (6).
The thickness of the pre-sole member (6H) formed by sintering is 1 mm or more and 5 mm or less, wherein the thickness is 1 mm or more and 5 mm or less. Or the golf club head (1) according to the item 9, 11. The head as claimed in claim 1, wherein the weight of the tungsten alloy sole corresponds to 30% to 60% of the weight of the completed head body. The golf club head (1) according to 4, 5, 6, 7, 8, 9, or 10. 12. The tungsten alloy sole (6).
Are characterized in that the weight or composition is different on the outer surface side (6F) of the sole portion or on the inner surface side (6G) of the sole portion of the head body (1A). ,
The golf club head (1) according to 6, 7, 8, 9, 10, or 11. 13. The tungsten alloy sole (6).
Are characterized in that the weight or composition is different on the toe (7) side or the heel (8) side of the head body (1A). , 7, 8,
The golf club head (1) according to 9, 10, or 11.