JPH07148290A - Golf club head - Google Patents

Abstract

PURPOSE:To provide a club head which does not separate members constituting the club head and improves appearance. CONSTITUTION:Holes 4 are formed on the front surface side of a sole member 2 and through holes 7 are formed in the deep part of these holes 4. This sole member 2 is fixed to a head body 1 by screws 8 inserted and arranged into these through holes 7. Packing members 10 which fix the screws 8, cover the screws, are formed to the state flush with the surface of the sole member 2 and consist of the same metal as the metal of the sole member 2 are inserted and arranged into the holes 4. These packing members 10 are welded and fixed to the sole members 2.

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 made of metal, and more particularly to a golf club head having a head body made of metal and a mounting member made of another metal fixed to a part of the head body.

[0002]

2. Description of the Related Art As is well known, it is known that the hitting characteristics of a golf club depend on the shape of the golf club head. In addition, the material forming the head also affects the hitting characteristics. For golf club head material,
In recent years, titanium has been attracting attention as a material that is lightweight and has high repulsive force. For example, in metal wood, many golf club heads are made of titanium or titanium alloy to improve the flight distance, and there are many titanium wood club heads with stainless steel or cobalt alloy at the bottom. There is also provided a plate-shaped body made of (1) as a sole material for lowering the center of gravity and improving the shot feeling. Further, the use of this titanium is not limited to the above-mentioned wood, but is also found in the field of iron. For example, the head body itself is made of stainless steel or cobalt alloy as before, but a recess is formed on the face side. There is also provided one in which a plate body made of titanium is fitted into the recess and the characteristics of titanium are used only in the face surface.

[0003]

By the way, the means for fixing the sole material made of stainless steel or cobalt alloy to the head body made of titanium and the means for providing the face surface made of titanium on the head body made of stainless steel or cobalt alloy are In both cases, the members are connected by screws. Titanium is difficult to process and is limited to the means that can be applied when fixing members.Because the weldability of stainless steel or cobalt alloy to titanium is poor, when the club head is configured as described above, the member functions are fixed. The reality is that we have no choice but to rely on screws. However, in a club head in which the above-mentioned members are screwed together, by repeatedly using the club, the plate material forming the sole material or the face surface is separated from the head body, and the screw is exposed to the outside. Therefore, there was a problem that the appearance was poor.

The present invention has been made in view of the above-mentioned problems, and in a golf club head in which a member made of another metal is fixed to a head body made of metal, the head body and the member fixed to the head body are provided. It is an object of the present invention to provide a golf club head which prevents the separation of the golf balls and improves the appearance.

[0005]

A golf club head according to claim 1, wherein an attachment member made of a second metal is fixed to a part of a head main body made of the first metal. A recess is formed on the surface side of the attachment member, and a through hole is formed in the bottom surface of the recess, and a screw inserted and arranged in the through hole is attached to the screw hole formed in the head body. A filling member made of a second metal, which is fixed to the head main body by screwing and tightening, is fixed to the screw in the recess to cover the screw and is flush with the surface of the attachment member. The means for solving the problems was to insert and arrange the filling member and fix the filling member to the attachment member by welding.

According to a second aspect of the golf club head,
The attachment member constitutes a sole member by being fixed to the bottom surface of the head main body, which is a means for solving the above-mentioned problems.

In the golf club head according to claim 3,
The attachment member forms a face member by being fixed to the front surface side of the head main body, which is a means for solving the above-mentioned problems.

[0008]

According to the golf club head of claim 1,
When the club is used, an external force is applied to the head main body and the attachment member, and the external force is also transmitted to the screw that fixes these members to each other. At this time, since the screw is fixed to the attachment member by the filling member made of the second metal, it is not loosened.

According to the golf club head of the second aspect, since the screw is fixed by the filling member even when the sole comes into contact with the ground and a shock is applied to the head during a swing, the screw and the sole. No loosening of members occurs. In addition, since the surface of the filling member is flush with the sole surface, it is not caught on the ground.

According to the golf club head of the third aspect, since the screw is fixed by the filling member even when the head is impacted by a shot, the screw and the face member are not loosened.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to wood will be described below with reference to FIGS. In the figure, 1 is a head body, and 2 is a sole member (attachment member) fixed to the bottom surface of the head body 1.

As shown in FIG. 1, the head main body 1 is a crown portion of a so-called golf club head, and is made of titanium (first metal) so as to be hollow, and similar to a general golf club head. Face 3 with a flat front
Thus, the rear surface of the face surface 3 has a bulged shape. As shown in FIG. 2, at the bottom of the head body 1, a flange 4 extending toward the center of the bottom of the head body 1 extends along the entire side edge of the head body 1 and is covered with the flange 4. The non-existing portion serves as an opening 5 that opens the inside of the head body 1. A neck portion 1b having a shaft hole 1a is provided on a side portion of the head body 1 as shown in FIG.

The sole member 2 is a plate body formed along the bottom surface of the head main body 1 and is made of stainless steel or a cobalt alloy (second metal).
It is attached to the bottom portion of the head body 1 by being fitted into. Further, the sole member 2 is fixed in a state where only the tip of the edge portion 2a is in contact with the outer surface of the flange 4 and the other portion is fixed with a clearance between the sole member 2 and the flange 4, and the edge portion 2a is appropriately pressed. As a result of being pressed against the flange 4 by pressure, the entire edge portion 2a is brought into close contact with the flange 4 to seal the opening portion 5. As shown in FIGS. 2 and 3, holes 6 are formed in a plurality of positions on the front surface side (bottom surface side) of the sole member 2, and through holes 7 are formed in the deep portion of the holes 6. Then, the sole member 2 is formed by screwing and tightening the screw 8 inserted and arranged in the through hole 7 into the screw hole 9 formed in the head main body 1.
It is fixed to. Further, a filling member 10 that is fixed to the screw 8 and covers the screw 8 and is flush with the surface of the sole member 2 is inserted and disposed in the hole 6. The filling member 10 is a member made of titanium similarly to the sole member 2 and is welded and fixed to the sole member 2.

To manufacture this wood, the head body 1
Is manufactured by a casting method, and the sole member 2 is manufactured by pressing, forging, or the like. Then, the sole member 2 is attached to the bottom surface of the head body 1, and the sole member 2 is fixed to the head body 1 by the screw 8. Then, the same metal as that of the sole member 2 is filled in the hole 6, and the filled filling member 10
Are welded to the sole member 2. Then, the surface of the filling member 10 after welding is polished to be flush with the surface of the sole member 2.

According to this wood, even when the sole member 2 repeatedly hits the ground at the time of impact, the head body 1
Since the sole member 2 and the sole member 2 are firmly fixed by the screw 8 and the screw 8 is fixed by the filling member 10, the displacement of the screw 8 is prevented even by repeated use, and as a result, the head body 1 Separation of the sole member 2 from is prevented. Furthermore, since the sole member 2 has a flat bottom surface, it has an excellent appearance and can be swung smoothly without being caught when it comes into contact with the ground. Also, the head body 1 is used as the sole member 2.
The use of a material having a larger specific gravity contributes to lowering the center of gravity of the golf club head, thus improving the shot feeling. in addition,
Since the face surface 3 of this wood has a large coefficient of restitution, the flight distance of a hit ball can be improved.

In the present invention, the shape of the head body 1 which does not have the opening 5 on the bottom surface is not limited to the above-described one. Further, the sole member 2 may be made of a material other than stainless steel or a cobalt alloy as long as it has a sufficient specific gravity, and may have a shape other than the above. Further, the mounting position and the number of the screws 8 are not limited to those illustrated in the drawing.

Next, an embodiment in which the present invention is applied to an iron will be described with reference to FIGS. 4 and 5.
In the figure, 11 is a head body, 12 is a head body 11
2 is a face member (attachment member) fitted in the face surface 13 of FIG.

The head body 11 is made of stainless steel or soft iron (first metal), and has a flat front surface 13 like a general golf club head. In the region including the sweet spot of the face surface 13 of the head body 11 and excluding the peripheral portion, the concave portion 14 is formed.
Is formed, and the face member 12 is fitted in the recess 14. A hole 15 is formed on the back surface side of the head body 11 where the face member 12 is attached, and a deep portion of the hole 15 is formed at the center of the head body 11 in the thickness direction. The hole 16 is formed. On the lower surface side of the head body 11, a hole 15 whose deep portion is located at the center portion in the thickness direction of the head body 11 is also formed.

The face member 12 is a plate made of titanium (second metal) and is used for screwing the face member 12 to the head body 11 with the screw 17 at the position of the hole 15 of the head body 11 on the back surface. The female screw holes 18 are formed in two positions at the top and bottom, for a total of four positions. The two female screw holes 18 located in the lower part of the face member 12 are formed in the protrusions 12 a provided on the back surface of the face member 12, respectively, and are opened in the lower surface of the face member 12. The face member 12 is the screw 1 inserted and arranged in the through hole 16 of the hole 15.
It is fixed to the head main body 11 by screwing and tightly connecting 7 to the female screw hole 18. Further, in the hole 15, a filling member 19 that is fixed to and covers the screw 17 and is flush with the surface of the face member 12.
Is inserted and placed. The filling member 19 is a metal that can be welded to the head body 11,
Is fixed to the head body 11 by welding and is flushed with the head body 11.

The method of manufacturing this iron is the same as that of the wood described above. After manufacturing the head main body 11 and the face member 12 and fixing them with the screws 17, the hole 15 is filled with the filling member 19 and this is The head body 1 is welded to the head body 11 and the surface of the filling member 19 is polished.
The surface of 1 is made flush.

According to this iron, the face member 12 repeatedly hits the golf ball at the time of hitting, but the face member 12 is firmly fixed to the head main body 11 by the screw 17, and the screw 17 is filled. Since it is fixed by the member 19, the screw 1 can be repeatedly used.
As a result of the displacement of 7 being prevented, separation of the face member 12 from the head main body 11 is prevented. In addition, the filling member 19
Since its surface is flush with the surface of the head body 11, it does not hinder the impact. Further, since the face member 12 is made of titanium having a large coefficient of restitution, the flight distance of a hit ball can be improved.

In the present invention, the face surface 13
The area and shape occupied by the screw are not limited to those described above, and the screw 1
The attachment positions and the number of 7 are not limited to those illustrated in the drawing.

[0023]

According to the present invention, the following effects can be obtained. According to the golf club head of claim 1, the head body and the attachment member are firmly fixed with a screw,
Further, since the screw is fixed by the filling member, the displacement of the screw is prevented even after repeated use, and the attachment member is prevented from being separated from the head main body. Furthermore, since the surface of the filling member is flush with the surface of the attachment member,
As a golf club head, there is no obstacle in terms of function and appearance.

According to the golf club head of the second aspect, since the attachment member is fixed to the bottom surface of the head body to form a sole member, the sole member repeatedly hits the ground when hit. Even if the head body and the attachment member are firmly fixed with a screw, and the screw is fixed by the filling member, the displacement of the screw is prevented and the sole member from the head body is prevented. Is prevented. Further, since the bottom surface of the sole member is flush with the sole member, the sole member does not get caught when it comes into contact with the ground and can be swung smoothly.

According to the golf club head of the third aspect, since the attachment member is fixed to the front side of the head body to form a face member, the face member is frequently impacted with each impact. Even when added, the face member is firmly fixed to the head main body by the screw fixed by the filling member, so that the face member is not separated from the head main body even by repeated use.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an embodiment in which the present invention is applied to wood.

FIG. 2 is a sectional view showing a head main body in an embodiment in which the present invention is applied to wood.

FIG. 3 is a view showing a sole member in an embodiment in which the present invention is applied to wood.

FIG. 4 is an overall perspective view showing an embodiment in which the present invention is applied to an iron.

FIG. 5 is a cross-sectional view showing a golf club head in an example in which the present invention is applied to an iron.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Head body 2 Sole member (attachment member) 3 Face surface 6 Hole 7 Through hole 8 Screw 9 Screw hole 10 Filling member 11 Head body 12 Face member (attachment member) 13 Face surface 14 Recess 15 Hole 16 Through hole 17 Screw 18 Female screw hole 19 Filling member

Claims (3)

[Claims] 1. A golf club head in which an attachment member made of a second metal is fixed to a part of a head body made of a first metal, and a hole is formed on a surface side of the attachment member, A through hole is formed in the deep portion of the hole, and the attachment member is fixed to the head body by screwing and tightening a screw inserted and arranged in the through hole into a screw hole formed in the head body, A filling member made of a second metal that is fixed to the screw and covers the screw and is flush with the surface of the attachment member is inserted and arranged in the hole, and the filling member is attached to the attachment member. A golf club head characterized by being fixed by welding. 2. The golf club head according to claim 1, wherein the attachment member is fixed to a bottom surface of the head body to form a sole member. 3. The golf club head according to claim 1, wherein the attachment member is fixed to a front surface side of the head body to form a face member.