JPH06165843A - Golf club head - Google Patents

Abstract

PURPOSE:To provide a golf club head which facilitates bonding of a face body and face body consisting of different metals, is secure and has excellent aesthetic appearance. CONSTITUTION:The face body 11 which occupies at least one face of the club head and the head body 12 constituting the remaining part of the club head are formed of the different metals. The face body 11 is fixed by an adhesive into the recessed part 14 of the head body 1. The face body 11 and the head body 12 are mechanically coupled by means of metallic pins 13 press-fitted into pin insertion holes 17, 18.

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 in which a face body and a club head are made of different metals, and more particularly, to an improvement in the connecting structure between the face body and the head body.

[0002]

2. Description of the Related Art Generally, as a method of manufacturing a metal club head called a metal head, an integral method in which the whole is integrally formed by casting, forging, or the like, and a method in which a plurality of portions are formed separately and then these are formed. A division method in which they are integrated by welding is widely known. The integration method is mainly applied to iron club heads, and the division method is often applied to wood club heads.

In the above-mentioned integrated system, the entire head is generally made of the same metal material. Even in the divided system, each part is made of the same or the same kind of metal material from the viewpoint of reliability of welding strength. It is common to combine

In recent years, attention has been paid to titanium, titanium alloys, etc., which are lightweight and have high mechanical strength, and metal heads using this kind of light metal are being used. However, since this kind of metal is expensive, the entire head is used. Is very expensive if made of this type of light metal. Also, light metals such as titanium and titanium alloys are suitable for the face body that occupies the face part of the head, but if a metal with a larger specific gravity than the face body is used for the head body that makes up the rest of the head, the center of gravity of the head The moment of inertia of the surroundings can be increased, and it becomes easy to adjust the height of the center of gravity of the head, the depth of the center of gravity from the face, and the like. There is an increasing demand for metal heads constructed by combining different kinds of metal materials.

[0005]

However, when the face body and the head body are made of different metal materials, it becomes difficult to perform welding, and it is difficult to obtain sufficient welding strength. In addition, since the welded portion appears on the surface even after the finish polishing, the appearance is greatly deteriorated.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a golf club head in which a face body made of different kinds of metal and a head body are easily and firmly coupled and which is excellent in appearance.

[0007]

In order to solve the above-mentioned problems, the invention according to claim 1 makes a face body which occupies at least a part of the face surface of the club head and a head main body which constitutes the remaining part of the club head different from each other. A golf club head made of metal is characterized in that the face body is fixed to the head body via a connecting metal member.

According to a second aspect of the present invention, in the golf club head according to the first aspect, the face body is further fixed to the head body via an adhesive.

According to a third aspect of the present invention, in the golf club head according to the first aspect, the connecting metal member is exposed only on the surface of the head body.

According to a fourth aspect of the present invention, in the golf club head according to the third aspect, the connecting metal member is made of the same or the same kind of metal as the head main body.

According to a fifth aspect of the present invention, in the golf club head according to the first aspect, the connecting metal member is exposed on the surface of the face body, and the connecting metal member is made of the same or the same metal as the face body. It is characterized by

According to a sixth aspect of the present invention, in the golf club head according to the first aspect, the face body is made of titanium or a titanium alloy, and the head body is made of a metal having a larger specific gravity than the face body.

According to a seventh aspect of the present invention, in the golf club head according to the first aspect, the head body has a recessed portion that opens toward the face side, and the inner end surface of the recessed portion opens toward the back side of the head body. And a face body is fitted in the recessed portion from the face side.

According to an eighth aspect of the present invention, in the golf club head according to the first aspect, the head body has a recessed portion which is open to the back side, and the inner end surface of the recessed portion is opened to the face side of the head body. And a face body is fitted into the recess and the opening from the back side of the head body.

[0015]

In the golf club head according to the present invention, since the face body made of different kinds of metal and the head body are fixed via the metal member for connection, the face body and the head body are firmly coupled. It will be aesthetically pleasing.

According to another aspect of the golf club head of the present invention, the face body is further fixed to the head body with an adhesive, so that the bond between the face body and the head body becomes stronger.

In the golf club head according to the present invention, since the connecting metal member is exposed only on the surface of the head body and is not exposed on the surface of the face body which has a great influence on the hit ball, the hitting characteristics are not affected. The influence of the connecting metal member can be suppressed.

In the golf club head according to the present invention, the connecting metal member exposed only on the surface of the head body is made of the same metal or the same kind of metal as the head body. It becomes difficult to distinguish between, and it becomes a neat design.

In the golf club head according to the present invention, the connecting metal member is exposed on the surface of the face body, and the connecting metal member is made of the same or similar metal as the face body. It is possible to minimize the influence on the hitting characteristics, and it becomes difficult to distinguish between the connecting metal member and the face body in appearance,
It has a clean design.

In the golf club head according to the present invention, since the face body is made of a light metal and the head body is made of a metal having a larger specific gravity than the face body, a club head having a large moment of inertia around the center of gravity of the head and a large depth of the center of gravity. Become.

According to another aspect of the golf club head of the present invention, the head body has a recessed portion that opens toward the face side and an opening that opens from the inner end surface of the recessed portion toward the back side of the head body. Since the face body is fitted into the recess from the face side, the face body contacts the inner end surface of the recess to prevent the face body from slipping out to the back side, and the face side is prevented from coming off by the connecting metal member. To be done.

In the golf club head according to claim 8, the head body has a recessed portion which is open to the back side thereof,
Since the face body is fitted into the recess and the opening from the back side of the head body, the face body is recessed. It is prevented from coming off to the face side by coming into contact with the inner end surface of the part, and coming off from the back side by the connecting metal member.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the drawings. In addition, in order to avoid redundant description, the same or similar components are denoted by the same reference numerals in these drawings.

1 to 6 show a first embodiment in which the present invention is applied to the head of an iron golf club. Referring to these figures, the club head 1
0 is a face body 11 occupying a part of the face surface,
The club head 10 and the head body 12 that forms the remaining portion are formed of different metals, and the face body 11 is provided with a pin 13 serving as a connecting metal member.
It is characterized by being fixed to.

More specifically, in this embodiment,
The face body 11 is made of a light metal such as aluminum alloy, titanium, or titanium alloy, and the head body 12 is the face body 1.
The face body 11 is made of a metal material having a specific gravity larger than 1, for example, stainless steel, beryllium copper, etc.
The head main body 12 is made of, for example, casting, forging, or the like by forging, a spread material, or the like. The face body 11 may have a constant thickness, but in this embodiment,
The thickness of the face body 11 increases from the top side toward the sole side. Face body 1 having such a configuration
When 1, the mass on the sole side of the head body 12 having a larger specific gravity than that of the face body 11 can be deviated to the back side, so that the depth of the center of gravity from the face of the head can be increased.

As clearly shown in FIG. 6, in particular, the head body 12 has a recessed portion 14 which opens to the face side thereof.
And a recess 15 formed on the back side of the head body 12.
And an opening 16 that opens from the inner end surface 14a of the face-side recess 14 to the inner end surface of the back-side recess 15. The face body 11 is recessed from the face side of the head body 12. It fits in 14. And, preferably, the face body 11 is the inner surface of the recess portion 14, especially the inner end surface 14 thereof.
It is fixed to a through an adhesive (not shown). A part of the back surface of the face body 11 extends from the opening 16 to the head body 1.
Since it is exposed to the back side of No. 2, it can be used as a display unit by previously forming characters, symbols, patterns, etc. on the exposed portion of the back surface of the face body 11 by engraving or the like.

On the top surface and the sole surface of the head body 12, a plurality of pin insertion holes 17 reaching the upper surface and the lower surface of the recessed portion 14 are bored substantially parallel to the face, and the upper surface and the lower surface of the face body 11 are formed. Each of them has a bottomed pin insertion hole 18 which is coaxially aligned with each pin insertion hole 17 when the face body 11 is fitted in the recess portion 14. The pin 13 described above is the head body 12
Pin insertion holes 17 and 1 from the top side and sole side, respectively
The face body 11 and the head body 12 are mechanically coupled by being press-fitted into the face body 8. In order to increase the binding force of the pin 13 to the head body 12 and the face body 11, the pin 1
The surface of 3 may be knurled or the like. Also, instead of press-fitting the pin 13, an adhesive is used instead of the pin insertion holes 17, 1
The pin 13 may be a screw and the pin insertion holes 17 and 18 may be screw holes.

In the golf club head having the above structure, the face body 11 and the head body 12 made of different metals are used.
Since the and are fixed via the pin 13, the connection between the face body 11 and the head body 12 is strong and the appearance is excellent. Further, since the face body 11 is further fixed to the head main body 12 via an adhesive, the bond between the face body 11 and the head main body 12 becomes stronger.

Further, in this embodiment, the pin 13 is exposed only on the surfaces of the top and the sole of the head body 12 and is not exposed on the surface of the face body 11 which has a great influence on the hitting ball. The influence of the pin 13 can be eliminated.

Furthermore, in this embodiment, the pin 13 is preferably made of the same or similar metal as the head body 12,
This makes it difficult to distinguish between the pin 13 and the head body 12 in terms of appearance, resulting in a neat design. If the pin 13 is made of a metal material different from that of the head body 12, such as titanium or a titanium alloy, the end surface of the pin 13 appears on the surface when the surface of the head body 12 is polished. Therefore, it can be positively used as a mark or the like.

7 and 8 show a second embodiment of the present invention. In this embodiment, the connecting metal member on the top side of the head 10 is a headed pin 19, and the headed pin 19 is provided so as to be exposed on the face side surface of the face body 11. More specifically, the head main body 12 is provided with a pin insertion hole 17 that extends from the inner end surface of the recess 15 on the back side to the inner end surface of the recess 14 on the side of the face. A pin insertion hole 18 reaching from the side surface to the back surface is formed, and the headed pin 19 is formed from the face side.
The head body 12 and the head body 12 are fastened by being inserted into the head body 18 and caulking the tip (rear end) of the headed pin 19 on the back side of the head body 12. In this embodiment, since the headed pin 19 is exposed on the surface of the face body 11, the headed pin 19 is preferably made of the same or similar metal material as that of the face body 11, whereby the headed pin 19 has a hitting property. It is possible to minimize the effect on the head, and it becomes difficult to distinguish between the headed pin 19 and the face body 11 in appearance, and a clean design can be achieved.

9 and 10 show the third embodiment of the present invention. In this embodiment, the metal members for connection on the top side and the sole side each include a headed pin 19, and each headed pin 19 is inserted into a bottomed pin insertion hole 18 opened on the back surface of the face body 11 in advance. It is welded integrally with the face body 11. And the face body 11
The tip of the headed pin 19 is crimped on the back side of the head body 12 in a state where the head pin 12 is fitted into the recess 14 from the face side of the head body 12.

In this embodiment, the pin 19 is the head body 1
Since it is exposed only to the back side recessed portion 15 of No. 2 and does not appear on the face side surface of the face body 11 which has a great influence on the hitting ball, the influence of the pin 13 on the hitting characteristic can be eliminated. Further, if the headed pin 19 is made of the same metal or the same kind of metal as the head body 12, it is difficult to distinguish the pin 19 and the head body 12 from the outside, and the design is neat, but the pin 19 is a face. If it is made of the same or the same metal as the body 11, the welding to the face body 11 becomes easy and strong. In this case, since the pin 19 and the head main body 12 are made of different metals, the end surface of the pin 19 appears on the surface of the back side recessed portion 15 when the surface of the head main body 12 is polished, but it is difficult for the player to see. Since it is a place, it does not spoil the appearance. Although the headed pin 19 is used in this embodiment, a headless pin is used to insert into a pin insertion hole formed in the back surface of the face body 11 for welding, or directly welded to the back surface of the face body 11. You may.

11 and 12 show the fourth embodiment of the present invention. In this embodiment, the metal member for connection on the top side is formed of a protruding strip 20 that projects from the back surface of the face body 11, and the back side recessed portion 15 of the head main body 12 reaches the face side recessed portion. An insertion hole 21 is formed. The tip of the protruding strip 20 is the face body 11
Is crimped on the back side of the head body 12 in a state of being fitted into the face side recessed portion of the head body 12. The strip 20 may be planted on the back surface of the face body 11 by welding, but may be formed integrally with the face body 11.

13 to 15 show a fifth embodiment of the present invention. In this embodiment, the connecting metal members on the top side and the sole side each include a protruding piece 20, and the head body 12 is exposed so that these protruding pieces 20 are exposed only on the top surface and the sole surface of the head body 12. And the face body 11 have projecting strip insertion holes 21 and 22 respectively.
Is formed almost parallel to the face.

FIG. 16 shows a sixth embodiment of the present invention. In this embodiment, a bottomed pin insertion hole 18 is formed on the back surface of the face body 11 at a predetermined angle with respect to the axis of the pin insertion hole 17 of the head body 12, and the pin insertion hole 17, from the back side of the head body 12, The headed pin 19 driven into the inside 18 is bent along the pin insertion hole 18 of the face body 11 to prevent the head body 11 from coming off and fasten the face body 11 and the head body 12 together.

FIG. 17 shows a seventh embodiment of the present invention. In this embodiment, the head body 12 has a recess 22 that opens to the back side, and an inner end surface 22a of the recess 22.
From the opening 23 to the face side of the head body 12
The face body 11 is fitted into the recess 22 and the opening 23 from the back side of the head body 12. Therefore, the face body 11 is prevented from coming off to the face side by the inner end surface 22a of the recess 22. Further, the face body 11 and the head main body 12 are mechanically coupled to each other by a pin 13 that is driven in from a recess 24 side formed on the back surface side of the face body 11.

FIG. 18 shows an eighth embodiment of the present invention. In this embodiment, similarly to the seventh embodiment, the head body 12 has a recess 22 that opens to the back side and an opening that opens from the inner end surface 22a of the recess 22 to the face side of the head body 12. And the face body 11 is fitted into the recess 22 and the opening 23 from the back side of the head body 12. Therefore, the face body 11 is prevented from coming off to the face side by the inner end surface 22a of the recess 22. Further, in this embodiment, the face body 11 and the head main body 12 are engaged with each other by an engaging ring 25 as a connecting metal member fitted into the recess 22 from the back side of the head main body 12.
Are mechanically coupled by. The engagement ring 25 is made of a shape memory alloy, and is fitted into the recess 22 and then heated to the shape recovery temperature, so that the groove 22b formed on the inner surface of the recess 22 by the memory recovery action. Engage with.

Although the embodiments shown in the drawings have been described above, the present invention is not limited to the embodiments described above,
Various modifications can be made to the constituent elements within the scope of the invention described in the claims. For example, the face body may occupy almost the entire face surface of the head, or may be located from the face surface to a part of the sole surface or the top surface. It goes without saying that the present invention can be applied not only to the head for iron clubs but also to the head for wood clubs.

[0040]

As is apparent from the above description, according to the present invention, the face body made of different kinds of metal and the head body are fixed via the metal member for connection, so that the face body and the head body are coupled. It is possible to provide a golf club head that is strong and excellent in appearance.

[Brief description of drawings]

FIG. 1 is a front view of an iron club head showing a first embodiment of the present invention.

FIG. 2 is a rear view of the main part of the head shown in FIG.

FIG. 3 is a plan view of the head shown in FIG.

FIG. 4 is a bottom view of a main part of the head shown in FIG.

5 is a left side view of a main part of the head shown in FIG. 1. FIG.

6 is a cross-sectional view of the head shown in FIG. 1 taken along line 6-6.

FIG. 7 is a front view of an iron club head showing a second embodiment of the present invention.

8 is a cross-sectional view of the head shown in FIG. 7 taken along line 8-8.

FIG. 9A is a sectional view of an iron club head showing a third embodiment of the present invention, and FIG. 9B is an exploded sectional view for explaining the assembling method.

FIG. 10 is a rear view of the face body of the embodiment shown in FIG.

FIG. 11 is a rear view of the face body of the iron club head showing the fourth embodiment of the present invention.

FIG. 12 is a rear view of the main parts of the head of the fourth embodiment.

FIG. 13 is a plan view of the head of the fifth embodiment.

FIG. 14 is a bottom view of the essential parts of the head of the fifth embodiment.

FIG. 15 is a sectional view of the head of the fifth embodiment taken along line 15-15 in FIG.

FIG. 16A is a sectional view of an iron club head showing a sixth embodiment of the present invention, and FIG. 16B is an exploded sectional view for explaining the assembling method.

FIG. 17 is a sectional view of an iron club head showing a seventh embodiment of the present invention.

FIG. 18 is a sectional view of an iron club head showing an eighth embodiment of the present invention.

[Explanation of symbols]

 10 club head 11 face body 12 head body 13 pin (metal member for connection) 14 face-side recess 15 back-side recess 16 opening 17 and 18 pin insertion hole 19 headed pin (metal member for connection) 20 protrusion Strips 21 and 22 Strip strip insertion hole 23 Face side opening 25 Engagement ring (metal member for connection)

Claims (8)

[Claims] 1. A golf club head in which a face body that occupies at least a part of the face surface of the club head and a head body that forms the remaining portion of the club head are made of different metals, and the face body has a connecting metal member interposed therebetween. The golf club head is characterized in that it is fixed to the head body. 2. The golf club head according to claim 1, wherein the face body is further fixed to the head body via an adhesive. 3. The golf club head according to claim 1, wherein the connecting metal member is exposed only on the surface of the head body. 4. The golf club head according to claim 3, wherein the connecting metal member is made of the same or the same metal as the head body. 5. The golf club head according to claim 1, wherein the connecting metal member is exposed on the surface of the face body, and the mechanical coupling member is made of the same metal or the same kind as the face body. 6. The golf club head according to claim 1, wherein the face body is made of a light metal, and the head body is made of a metal having a larger specific gravity than that of the face body. 7. The head body has a recessed portion that opens toward the face side and an opening that opens from the inner end surface of the recessed portion toward the back side of the head body, and the face body is recessed from the face side. The golf club head according to claim 1, wherein the golf club head is fitted in the portion. 8. The head body has a recessed portion that opens to the back side thereof, and an opening that opens from the inner end surface of the recessed portion to the face side of the head body, and the face body has the back side of the head body. The golf club head according to claim 1, wherein the golf club head is fitted in the recess and the opening.