JPH08294553A - Head for golf club - Google Patents

Abstract

PURPOSE: To provide a head for a golf club with which the expansion of a sweat area and the improvement of strength are made possible and production is easy. CONSTITUTION: A face member 6 formed of a planar metallic material is press fitted into a recessed part 7 of a head body by a press and is fitted into this recessed part 7. While the face member 6 is plastically deformed to the shape of the recessed part 7 of the head body 1 formed to an inverted taper shape by the pressure of the press, etc., both are securely fixed. The easy production is made possible without requiring a large-sized equipment for pouring of molten metal. The exposure of screws, etc., on a face 2 does not arise and aesthetic appearance is good.

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 generally called an iron.

[0002]

2. Description of the Related Art Conventionally, this type of iron is forged of iron to form a face, a face having a predetermined angle with respect to the sole, and a shaft mounting portion, which are then subjected to processing such as a shaft mounting hole and polishing. Was to be produced. In such a conventional head, the sole side of the head rear portion is projected rearward in order to enlarge the sweet area.
This is because the center of gravity of the head is located rearward and the distance between the center of gravity and the face is increased, thereby enlarging the sweet area.

[0003]

In the prior art described above, since the head is made of the same material, even if the sole side of the head rear portion is projected rearward, the center of gravity of the head is rearward. There was a limit to the location, and it was not possible to significantly expand the sweet area.

As one means for solving such a problem, in Japanese Utility Model Laid-Open No. 53-19475, a large window hole is punched in the striking surface of the head body, and this window hole is closed by a plate member attached to the striking surface. Iron golf clubs fixed with screws or the like are known. However, in such a thing, the head body and the plate material are fixed with screws or the like, so the fixing force is weak, there is a risk that they may come off during a shot, and the manufacturing is not easy, and further, the screws and the like appear to give a beautiful appearance. Inferior.

In Japanese Utility Model Laid-Open No. 52-146353, the head face is entirely or lightly made of a light metal (light metal alloy), and the outer peripheral portion including the sole portion is made of iron (iron alloy). It is disclosed that the sweet area is formed by arranging a weight (iron (iron alloy)) on the periphery of the face portion to enlarge the sweet area, and the edge of the recessed portion where the face is formed has an inverse taper. However, such a thing is for pouring a light metal such as molten aluminum to form a face, and thus large-scale equipment for melting, pouring and the like is required.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems, to enlarge the sweet area, to further improve the strength, and to provide a golf club head which is easy to manufacture.

[0007]

According to the present invention, in a golf club head having a face on the front surface and a shaft mounting portion on one side, a sole is formed and a concave portion is formed on the front surface corresponding to the face. It is composed of a head body and a face member formed of a plate-like metal material formed of a material having a smaller specific gravity than that of the head body and fitted into the recess. The face member is press-fitted into the recess and fitted. A golf club head characterized by the above.

[0008]

With the above structure, the face member can be firmly fixed to the recess by press-fitting and fitting the face member without requiring large equipment.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. The head body 1 is provided with a face 2 having a predetermined angle A, and a shaft mounting portion 4 for connecting the shaft 3 is provided on one side of the head body 1. And beryllium copper alloy (specific gravity about 8.
2) or the head body 1 made of stainless steel (specific gravity of about 7.9) or the like and having the sole 5 is formed with a recess 7 into which a thin plate-shaped face member 6 is fitted. The face member 6 is made of a material having a small specific gravity such as titanium, titanium alloy (specific gravity: about 4.5), aluminum, aluminum alloy, magnesium alloy, carbon fiber. All or part of the peripheral surface 8 of the recess 7
Is formed in a reverse taper shape so that the rear side becomes wider, and the edge portion 6A of the face member 6 is formed slightly larger than the peripheral surface 8. Further, on the bottom surface 7A of the recess 7, a window hole 9 smaller than the recess 7 is formed.
The bottom surface 7A is formed with a step portion 10 and the whole or a part of the peripheral surface 10A of the step portion 10 has a reverse taper so that the rear side becomes wider. It is formed into a shape. The face member 6 has the recess 7
The projection 11 is provided on the rear surface thereof. The protrusion 11 is formed slightly larger than the step 10. When the face member 6 is fixed to the head body 1, the face member 6 is press-fitted into the recess 7 by a press or the like. At this time, the edge 6A of the face member 6 is on the peripheral surface 8 and the edge 11A of the protrusion 11 is on the peripheral surface.
The head body 1 and the face member 6 can be firmly fixed to each other because the head body 1 and the face member 6 are firmly fixed to each other by being fitted in the reverse taper shape to the 10A. Further, the back surface of the face member 6 is brought into contact with the bottom surface 7A. Incidentally, 13 is the top of the head body 1, and 14 is the heel.

As described above, in the above embodiment, the concave portion 7 and the window hole 9 are formed on the front surface of the head body 1 made of beryllium copper alloy or stainless steel, and the specific gravity of the head body 1 is made of titanium or titanium alloy. By fitting the face member 6 formed of a material having a small size into the concave portion 7, the center of gravity G of the head is separated from the face 2 toward the thick sole 5 side of the head body 1 having a large specific gravity. The distance between the center of gravity G and the face 2 becomes large, and an ultra wide area head can be provided. Further, since the window 9 is formed in the head body 1, the center of gravity G of the head body 1 itself can be lowered and the center of gravity G can be provided further rearward.

Further, a face member 6 made of a plate-shaped metal material is press-fitted and fitted into the concave portion 7 of the head main body 1 by pressing, and the face member 6 is formed in an inverse taper shape by the pressure of the press. Since they are press-fitted while being plastically deformed into the shape of the recessed portion 7 of the head main body 1 and fixed to each other, it is possible to easily manufacture without requiring a large-scale facility for pouring the molten metal as in the prior art. can do. In addition, the face 2 does not have a screw or the like, and the appearance is good.

Further, the peripheral surface 8 and the peripheral surface 10A are formed in an inverse taper shape so that the rear portion side is widened, and the face member 6 is press-fitted into the concave portion 7 by a press so that the face member 6 is fitted. Can be firmly fixed by the dovetail structure, and the risk that the face member 6 will come off during a shot can be eliminated.

Moreover, since the back surface of the face member 6 is in contact with the bottom surface 7A, the impact force applied at the time of shot can be reliably received by the bottom surface 7A via the face member 6. Furthermore, when the face member 6 is press-fitted into the recess 7 by a press or the like and is fitted, the back surface of the face member 6 contacts the bottom surface 7A of the recess 7, so that the press-fitting and fitting can be performed accurately. Further, since the window hole 9 is provided on the center side of the back surface of the face member 6, the face member 6 can be freely elastically deformed during a shot.

Further, a step portion 10 is formed on the bottom surface 7A, and all or a part of the peripheral surface 10 of the step portion 10 is formed.
A is formed in an inverse taper shape so that the rear side becomes wider,
Since the convex portion 11 of the face member 6 is press-fitted by a press or the like and fitted, the fixing force between the head body 1 and the face member 6 can be further improved.

A second embodiment of the present invention will be described with reference to FIGS. 3 and 4. The head body 1 is provided with a face 2 having a predetermined angle A, and a shaft mounting portion 4 for connecting the shaft 3 is provided on one side of the head body 1. The head body 1 having the sole 5
The concave portion 7 into which the thin plate-shaped face member 6 is fitted is formed on the front surface side thereof. All or part of the peripheral surface 8 of the concave portion 7 is formed in an inversely tapered shape so that the rear side is wide, and the edge portion 6A of the face member 6 is formed slightly larger than the peripheral surface 8. There is. Further, a window hole 9 is formed in the bottom surface 7A of the recess 7. The face member 6 is fitted in the recess 7. When the face member 6 is fixed to the head body 1, the face member 6 is pressed into the recess 7 by pressing. At this time, since the edge portion 6A of the face member 6 is fitted and fixed to the peripheral surface 8 in a dovetail groove shape, the head body 1 is firmly fixed.
The face member 6 can be fixed. Further, the back surface of the face member 6 contacts the bottom surface 7A of the recess 7. Incidentally, 13 is the top of the head body 1, and 14 is the heel.

As described above, in the above embodiment, the concave portion 7 is formed on the front surface of the head main body 1, and the face member 6 made of a material having a smaller specific gravity than the head main body 1 is fitted into the concave portion 7. , The center of gravity G of the head
The head body 1 having a large specific gravity is separated from the face 2 toward the thick sole 5 side, and as a result, the distance between the center of gravity G and the face 2 is increased, and an ultra wide area head can be provided. Further, since the window 9 is formed in the head body 1, the center of gravity G of the head body 1 itself can be lowered and the center of gravity G can be provided further rearward.

Further, a face member 6 made of a plate-shaped metal material is press-fitted into the recess 7 of the head body 1 by a press or the like, and the face member 6 is shaped by the pressure of the press to form the recess 7 of the head body 1. Since they are press-fitted while being plastically deformed to fix the two, they can be easily manufactured. In addition, the face 2 does not have a screw or the like, and the appearance is good.

Further, the peripheral surface 8 is formed in a reverse taper shape so that the rear portion side is wide, and the face member 6 is press-fitted into the recess 7 by a press or the like, so that the face member 6 is formed into a dovetail groove. It can be firmly fixed by the structure, and the risk that the face member 6 will come off during a shot can be eliminated.

Moreover, since the back surface of the face member 6 is in contact with the bottom surface 7A, the impact force applied during the shot can be reliably received by the bottom surface 7A via the face member 6. Furthermore, when the face member 6 is press-fitted into the recess 7 by a press or the like and is fitted, the back surface of the face member 6 contacts the bottom surface 7A of the recess 7, so that the press-fitting and fitting can be performed accurately. Further, since the window hole 9 is provided on the center side of the back surface of the face member 6, the face member 6 can be freely elastically deformed during a shot.

The present invention is not limited to the above-described embodiment. For example, the edge portion 6A and the edge portion 11A of the embodiment are formed in a reverse taper in advance and are fitted into the concave portion 7 and the step portion 10. It is possible to make various modifications such as "Moiyo".

[0021]

According to the present invention, in a golf club head having a face on the front surface and a shaft mounting portion on one side, a head body having a sole formed on the front surface to form a concave portion corresponding to the face, A face member formed of a plate-like metal material having a specific gravity smaller than that of the head main body and fitted into the recess, and the face member is press-fitted into the recess by a press or the like and fitted. A head member for a golf club, wherein a face member made of a plate-shaped metal material is press-fitted into the recess of the head body by a press or the like, and the face member is pressed by the pressure of the head body or the like. Since the two are fixed by being press-fitted while being plastically deformed into the shape of the concave part of It can be easily manufactured without the need for large equipment for fitting, and by pressing the face member into the recess with a press or the like, the head body and the face member can be firmly fixed, and the face member separates during a shot. There is no danger of

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the first embodiment of the present invention.

FIG. 3 is a sectional view showing a second embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a second embodiment of the present invention.

[Explanation of symbols]

 1 Head Body 2 Face 4 Shaft Attachment 5 Sole 6 Face Member 7 Recess

Claims (1)

[Claims] 1. A golf club head having a face on the front surface and a shaft mounting portion on one side,
A head main body having a sole and a concave portion formed on the front surface corresponding to the face; and a face member formed of a plate-shaped metal material formed of a material having a smaller specific gravity than the head main body and fitted in the concave portion. A head for a golf club, characterized in that the face member is press-fitted and fitted into the recess.