JP3143590B2 - Golf club head and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a golf club head and a method for manufacturing the same.

[0002]

2. Description of the Related Art It has been more frequent to manufacture golf club heads by combining different kinds of materials. This is to increase the freedom of head weight distribution and center of gravity design by combining materials with specific gravity differences,
Alternatively, there are various effects such as changing the material only for the hitting surface to improve the feeling at the time of hitting.

[0003] In this case, how to join dissimilar materials is a problem. Conventionally, however, in the case of a combination of a metal and an organic material, bonding or screwing is performed. , Casting, bonding and the like.

For example, in a wood-type golf club head as shown in FIG. 10 , bosses g, g are provided on the bottom wall of a hollow head body a, and the head body a
It has been known that a sole plate b having a specific gravity larger than the specific gravity is fixed to the bottom surface of the head main body portion a via screws c, c screwed into the boss portions g, g. In an iron type golf club head as shown in FIG. 11 , a face-surface forming plate d made of a metal having a low specific gravity is fitted and press-fitted into a press-fitting stepped portion e of a head body f. It was known.

[0005]

However, the above-described techniques such as screwing, fitting press-fitting, bonding, and casting have the following problems. That is, in the case of the screwing shown in FIG. 10 , the screw head is exposed, which is not preferable in appearance, and it is necessary to provide a boss portion g for screwing in the head main body portion a. Had become. In addition, FIG. 11
In the case of the press-fitting shown in (1), basically, the cradle must be made with high accuracy, and it was very difficult to form a complicated shape. Further, since a large internal stress is generated by the press-fitting, there is a restriction on a practicable portion. Moreover, it was difficult to implement the method for a material having low strength. In addition, in the bonding with an adhesive, the strength is basically insufficient particularly at a portion where stress is relatively concentrated. Also, in the case of cast-in, it was necessary to be a material that could withstand the casting temperature, there were problems such as shrinkage due to high temperature, deformation, etc. .

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and has a sufficiently large strength enough to withstand use as a golf club and is beautiful in appearance in spite of being made of two or more kinds of different materials. The purpose is to provide a head.

Another object of the present invention is to provide a method of manufacturing a golf club head which can firmly join two or more kinds of dissimilar materials and can finish the appearance beautifully.

[0008]

In order to achieve the above object, a golf club head according to the present invention comprises a metal main member constituting a majority of the head weight and a sub member made of a material different from the main member. And an attachment auxiliary member that can be welded to the main member, wherein the auxiliary member is brought into contact with an outer surface of the main member, and an outer edge of the auxiliary member is formed by the attachment auxiliary member and the main member. The auxiliary mounting member is welded to the outer surface of the main member so as to be fixed in a sandwiched state.

The golf club head according to the present invention has a metal main member having a stepped portion as a part and constituting a majority of the head weight, a sub member made of a material different from the main member, and An auxiliary member capable of being welded to the member, wherein the auxiliary member is fitted into a stepped portion of the main member, and an outer edge of the auxiliary member is sandwiched between the mounting auxiliary member and the main member. The mounting auxiliary member is brought into contact with the outer surface of the main member so as to be fixed and welded.

[0010] The golf club head according to the present invention includes a metal main member having a stepped portion as a part and forming a majority of the head weight, and a main member having a stepped portion at an outer edge. A sub-member made of a different material; and a mounting auxiliary member weldable to the main member. The outer edge of the sub-member is fitted into the stepped portion of the main member, and the outer surface of the main member and the sub- Material
The stepped portion is flush with the subassembly, and the mounting auxiliary member is fitted into the stepped portion of the sub member, and the outer edge of the sub member is clamped between the mounting auxiliary member and the main member. The mounting auxiliary member is brought into contact with the outer surface of the main member so as to fix the main member.
And the outer surfaces of the mounting auxiliary member, the main member, and the sub member are continuous.

Further, the golf club head according to the present invention has a metal main member having a concave portion as a part and constituting a majority of the head weight, a sub member made of a material different from the main member, and A welding auxiliary member that can be welded, and the sub-member is fitted into the concave portion of the main member,
The auxiliary member is fixed to the main member so that the outer edge of the auxiliary member is clamped between the auxiliary member and the main member .
It is welded by contacting the outer surface .

Further, in the method of manufacturing a golf club head according to the present invention, an auxiliary member made of a different material is brought into contact with a metal main member that occupies a majority of the head weight, and further, a mounting that can be welded to the main member. The auxiliary member is brought into contact with the outer surface of the sub member and the main member so as to cover the outer edge of the sub member, and then the attachment auxiliary member is welded to the outer surface of the main member to form an outer surface of the sub member. The edge is fixed in a sandwiching manner by the main member and the auxiliary mounting member, and then the main member, the weld metal by welding and the outer surface of the auxiliary mounting member are polished so as to be continuous.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments.

FIG. 1 shows an embodiment of a golf club head according to the present invention.
A metal main member 1 and a sub member 2 which make up a majority of the head weight
And a mounting auxiliary member 3, and illustrates a case of a wood type golf club head.

The metal main member 1 is hollow with a space 5 formed therein, and has a hole 6 formed in the lower surface. The sub-member 2 is made of a material different from that of the main member 1, and is smaller than the outer size of the bottom surface of the main member 1 and smaller than the inner size of the hole 6 of the main member 1 when viewed from the bottom surface side. It is formed in a flat shape with large external dimensions.

The auxiliary mounting member 3 is made of a material that can be welded to the main member 1, is annular when viewed from the bottom side, and has a stepped portion 13 for receiving the outer edge 4 of the sub member 2 from below. Inside.

Thus, this golf club head H is
The auxiliary member 3 was welded to the main member 1 such that the auxiliary member 2 was brought into contact with the main member 1 and the outer edge 4 of the auxiliary member 2 was fixed in a sandwiched manner between the auxiliary member 3 and the main member 1. Things. That is, the main member 1 and the mounting auxiliary member 3 are fixed to each other via the weld metal 10.

The material of the main member 1 is, for example,
Aluminum, aluminum alloy, titanium (pure titanium), titanium alloy and the like can be mentioned. Examples of the material of the sub-member 2 include brass, aluminum, and tungsten. Further, as the material of the attachment auxiliary member 3, similarly to the main member 1, aluminum, an aluminum alloy, titanium (pure titanium), a titanium alloy and the like can be mentioned. In that case,
The material of the main member 1 and the attachment auxiliary member 3 is, of course, a material that can be welded to each other, and the material of the main member 1 and the sub-member 2 is, of course, different materials that cannot be welded to each other.

Next, in order to manufacture the above-described golf club head H, first, the sub member 2 is brought into contact with the bottom surface of the metal main member 1 as shown in FIG. Specifically, sub-member 2
Makes the sub-member 2 abut so that it covers the hole 6 on the bottom surface of the main member 1.

Further, as shown in FIG. 3, the auxiliary mounting member 3 is brought into contact with the sub-member 2 and the main member 1 so as to cover the outer edge 4 of the sub-member 2. That is, the receiving stepped portion 13 of the mounting auxiliary member 3 is brought into contact with the lower surface of the outer edge 4 of the auxiliary member 2, and the upper end surface 14 of the mounting auxiliary member 3 is brought into contact with the bottom surface of the main member 1.

Next, as shown in FIG.
Is welded to the main member 1, and the outer edge 4 of the sub member 2 is clamped between the main member 1 and the auxiliary mounting member 3. Specifically, between the outer edge of the mounting auxiliary member 3 and the bottom surface of the main member 1,
The welding is performed so that the weld metal 10 rises slightly.

Thereafter, the outer surfaces of the main member 1, the weld metal 10 and the mounting auxiliary member 3 are polished so as to be continuous. That is, by polishing the raised portion of the weld metal 10 to make the outer surfaces of the weld metal 10 and the main member 1 continuous, the golf club head H of FIG. 1 is completed.

According to the method of manufacturing a golf club head, although the main member 1 and the sub member 2 are made of different materials which cannot be welded by general welding, the mounting auxiliary member 3 and the welding metal The sub member 2 can be firmly fixed to the main member 1 through the intermediary of the main member 1. In particular, compared to screwing or bonding with an adhesive, it can be firmly fixed and has high strength. Further, the outer surfaces of the main member 1, the weld metal 10 and the mounting auxiliary member 3 can be made smooth and continuous, and the appearance of the head becomes beautiful. Furthermore, compared with the case of press-fitting, a cradle is not required and the internal concave force is extremely small, so that the main member 1 can be easily joined to a complicatedly shaped portion or a portion having a weak strength, and the strength is increased. Can be.

In addition, according to the golf club head H, although the main member 1 and the sub member 2 are made of different materials which cannot be welded by general welding, sufficient strength as a golf club head can be obtained. Can be. In addition, the sense of discomfort in appearance is almost eliminated. Furthermore, since the material of the sub-member 2 can be freely selected, it is easy to obtain desired characteristics required as a golf club head,
There is an advantage that design flexibility is increased.

Next, FIG. 5 shows another embodiment of the golf club head according to the present invention, in which the main member 1 has a stepped portion 7 in part and the sub member 2 is attached to the outer edge 4. It has a stepped portion 8 and the outer edge 4 of the sub-member 2 is
At the same time, the auxiliary mounting member 3 is inserted into the stepped portion 8 of the auxiliary member 2, and the outer edge 4 of the auxiliary member 2 is fixed to the auxiliary auxiliary member 3 and the main member 1 so as to be clamped. The attachment auxiliary member 3 is welded to the main member 1 and the outer surfaces of the attachment auxiliary member 3, the main member 1 and the sub-member 2 are continuous.

Here, the stepped portion 7 of the main member 1 is adjacent to the inner peripheral end face of the hole 6 penetrating through the wall of the main member 1 and inside the outer surface of the wall of the main member 1. Is defined as a small-width surface formed by deforming or notching the wall of the main member 1 so as to form a step.

The stepped portion 8 of the sub-member 2
Is defined as a small-width surface portion formed by deforming or notching the outer edge of the sub-member 2 so as to form a step above the lower surface of the sub-member 2. More specifically, the sub-member 2 includes a bottom surface forming portion 9 that forms the bottom surface of the head and an outer edge 4 that forms the stepped portion 8.
And consisting of

Further, the depth dimension D ₁ of the stepped portion 7 of the main member ₁
And the thickness T ₁ of the outer edge 4 of the sub-member 2 is the same, and the thickness T ₂ of the mounting auxiliary member 3 is the same as the depth D ₂ of the stepped portion 8 of the sub-member 2. In addition, the mounting auxiliary member 3
Is made of an annular metal member having a horizontally long rectangular cross section. Other configurations are the same as those in FIG.

In order to manufacture the golf club, first, as shown in FIG.
The outer edge 4 of the sub member 2 is fitted. Thereby, the main member 1
And the stepped portion 8 of the sub-member 2 are flush with each other. Further, as shown in FIG. 7, the attachment auxiliary member 3 is fitted into the stepped portion 8 of the outer edge 4 of the sub member 2. As a result, the bottom surface of the sub-member 2 and the bottom surface of the attachment auxiliary member 3 become a continuous plane.

Thereafter, as shown in FIG. 8, the auxiliary mounting member 3 is welded to the main member 1 so that the outer edge 4 of the sub member 2 is
And the mounting auxiliary member 3 to fix it in a clamping manner. Thereafter, the raised portion of the weld metal 10 is polished so that the outer surfaces of the main member 1, the weld metal 10 and the sub-member 2 are continuous, and the golf club head H shown in FIG. 5 is completed.

Thus, according to the manufacturing method described with reference to FIGS. 5 to 8, the sub-member 2 can be easily positioned with respect to the main member 1, and the sub-member 2 is unexpectedly displaced. Therefore, the golf club head H can be manufactured more easily. Further, the sub member 2 can be more firmly fixed to the main member 1.

Further, the outer surfaces (the bottom surface of the head) of the main member 1, the sub member 2, and the weld metal 10 can be finished more smoothly, and the appearance is beautiful. It is preferable that the bottom surfaces of the sub-member 2 and the attachment assisting member 3 are polished, so that a smoother outer surface can be obtained. FIG.
According to the golf club head H shown in (1), the strength is further increased and a more beautiful appearance without a sense of incongruity can be obtained .

[0033] Next, FIG. 9 shows another embodiment of a golf club head according to the present invention, the main member 1 has a part of the recess 11, and the secondary part 2 of the main member 1 recesses 11, and the attachment auxiliary member 3 is welded to the main member 1 so that the outer edge 4 of the sub member 2 is clamped between the attachment auxiliary member 3 and the main member 1. Here, the concave portion 11 is defined as a portion having a concave cross section in which a part of the wall of the main member 1 is deformed inwardly into a concave shape.

The depth D ₅ of the recess 11 and the thickness T ₅ of the sub-member 2 are set to be the same. The attachment auxiliary member 3 is an annular metal member having a constant thickness.

To manufacture the golf club head, first, the sub member 2 is fitted into the concave portion 11 of the main member 1. In other words, the sub-member 2 is brought into contact with the main member 1.
Thereby, the lower end surface of the main member 1 and the lower surface of the sub member 2 become flush. Thereafter, similarly to the manufacturing method described with reference to FIGS. 1 to 4, the attachment auxiliary member 3 is brought into contact with the sub-member 2 and the main member 1 so as to cover the outer edge 4 of the sub-member 2. Next, the attachment auxiliary member 3 is welded to the main member 1, and then the main member 1, the weld metal 10, and the outer surfaces of the attachment auxiliary member 3 are polished so as to be continuous.

In the present invention, aluminum, aluminum alloy, titanium (pure titanium), and metals other than titanium alloy can be used as the material of the main member 1 and the mounting auxiliary member 3. Further, as the material of the sub-member 2, any metal other than brass, aluminum, and tungsten may be used, or a material other than metal (for example, ceramics, carbon, or the like) may be used.

The stepped portion 7 of the main member 1 and the recess 11
Is not limited to the bottom surface (sole surface), and may be provided on, for example, a crown portion or a side portion. The golf club head of the present invention and the method of manufacturing the same can be applied to not only a wood type golf club head but also an iron type golf club head.

[0038]

EXAMPLES Next, the golf club head according to the present invention was actually fabricated as Example were compared with that embodiment and the conventional example. The details of the materials and the like of the embodiment and the conventional example are shown in Table 1 below.

[0039]

[Table 1]

[0040] At a Table 1, the golf club of the first embodiment 1, the golf club of Example 2 5, respectively corresponding, each embodiment by the manufacturing method of the golf club of the present invention Manufactured. In addition, 6-4 titanium means titanium
It is a 90% titanium, 6% aluminum, 4% vanadium titanium alloy.

In the first embodiment, the metal main member (head main body) is manufactured by casting aluminum, the sub member (sole) is made of brass, and the mounting auxiliary member is made of aluminum. In order to join metals that cannot be welded like aluminum and brass conventionally, screwing, bonding,
Alternatively, only the press fit into a very limited portion of the sole is required, and the degree of freedom in design is low. According to the first embodiment, however, the sub member (brass) can be firmly fixed to almost the entire surface of the sole. Since there is no need to back up the main metal member, the degree of freedom in design is significantly improved. In addition, since the gap between the metal main member, the sub member, and the auxiliary mounting member was relatively large, the welding metal could flow into the gap during welding to fill the gap. For this reason, the metal main member, the sub member, and the attachment auxiliary member could be firmly joined.

In the second embodiment, the main member is made of 6-4 titanium, the sub member is made of brass, and the mounting auxiliary member is made of pure titanium. According to the second embodiment, compared to the first embodiment, the build-up of the weld metal at the time of manufacturing could be reduced. In addition, polishing of the weld metal was easy .

[0043] The Contact, Conventional Example 1, a brass sole plate on the bottom of the aluminum head body adhered with an adhesive, and is obtained by set screw, is required backup to the head body sole In addition, since it is necessary to provide a boss portion for the screw in the head body, there is a disadvantage that the degree of freedom in design is significantly restricted.

In Conventional Example 2, a sole plate made of pure titanium is press-fitted into the bottom surface of a stainless steel head body, and the joining is performed firmly by an inverse taper. Is difficult. In addition, press-fitting is not possible in a deformable portion such as a hollow wood.

[0045]

Since the present invention is configured as described above, the following effects can be obtained.

According to the golf club head of the first aspect, the sub member 2 can be easily and firmly fixed to the main member 1 even though the main member 1 and the sub member 2 are made of different materials that cannot be welded. In addition, a sufficiently large strength can be obtained. Further, since the material of the sub-member 2 can be freely selected,
There is an advantage that desired characteristics required for a golf club head can be easily obtained, and the degree of freedom in design is increased.
Further, the outer surface can be made smooth, and a beautiful appearance can be obtained.

According to the golf club head of the second aspect, the same effects as those of the first aspect can be obtained,
The strength can be further increased and the outer surface can be made smoother.

According to the golf club head of the third aspect, the same effects as those of the second aspect can be obtained, and the strength and the smoothness of the outer surface can be further improved.

According to the golf club head of the fourth aspect, the same effects as those of the first aspect can be obtained,
Strength is further increased.

According to the method of manufacturing a golf club head according to the fifth aspect, the sub member 2 is easily and firmly fixed to the main member 1 even though the main member 1 and the sub member 2 are made of different materials that cannot be welded. it can. In addition, welding can be easily performed, and the build-up of the weld metal can be reduced. Further, the outer surface can be finished smoothly, and a golf club head having no unnatural appearance can be manufactured.

[Brief description of the drawings]

FIG. 1 is a sectional side view showing an embodiment of a golf club head according to the present invention.

FIG. 2 is an explanatory view of a manufacturing method.

FIG. 3 is an explanatory view of a manufacturing method.

FIG. 4 is an explanatory view of a manufacturing method.

FIG. 5 is a cross-sectional side view showing another embodiment of the golf club head of the present invention.

FIG. 6 is an explanatory view of a manufacturing method.

FIG. 7 is an explanatory view of a manufacturing method.

FIG. 8 is an explanatory diagram of a manufacturing method.

FIG. 9 is a cross-sectional side view showing another embodiment of the golf club head of the present invention.

FIG. 10 is a sectional view of a conventional example.

FIG. 11 is a sectional view of a conventional example.

[Explanation of Signs] 1 Metal main member 2 Sub-member 3 Mounting auxiliary member 4 Outer edge 7 Stepped portion 8 Stepped portion 10 Weld metal 11 Concave portion

Claims (5)

(57) [Claims] 1. A main metal member 1 which makes up a majority of the weight of a head.
And a sub-member 2 made of a material different from the main member 1, and an attachment auxiliary member 3 that can be welded to the main member 1. The sub-member 2 is brought into contact with the outer surface of the main member 1. ,
The auxiliary member 3 is brought into contact with the outer surface of the main member 1 and welded so that the outer end edge 4 of the sub member 2 is clamped between the auxiliary member 3 and the main member 1. Golf club head characterized by the following. 2. A metal main member 1 having a stepped portion 7 as a part and constituting a majority of the weight of the head, a sub member 2 made of a material different from the main member 1, and weldable to the main member 1. The auxiliary member 2 is fitted into the stepped portion 7 of the main member 1 and the outer edge 4 of the auxiliary member 2 is provided.
The auxiliary mounting member 3 is applied to the outer surface of the main member 1 so as to be clamped between the mounting auxiliary member 3 and the main member 1.
A golf club head which is brought into contact with and welded thereto . 3. A metal main member 1 having a stepped portion 7 as a part and constituting a majority of the weight of the head, and a stepped portion 8 on the outer edge 4.
A sub-member 2 having a material different from that of the main member 1
And an auxiliary attachment member 3 that can be welded to the main member 1, and the outer edge 4 of the sub member 2 is attached to the stepped portion 7 of the main member 1.
And the outer surface of the main member 1 and the stepped portion of the sub member 2
8 and the auxiliary member 3 is fitted into the stepped portion 8 of the auxiliary member 2, and the outer edge 4 of the auxiliary member 2 is connected to the auxiliary auxiliary member 3 and the main member 2. The mounting auxiliary member 3 is fixed to the outside of the main member 1 so as to be fixed in a holding shape at 1.
A golf club head wherein the outer surfaces of the attachment assisting member 3, the main member 1, and the sub member 2 are formed into a continuous surface while being brought into contact with and welded to the surface. 4. A metal main member 1 having a recess 11 in part and constituting a majority of the weight of the head, a sub member 2 made of a material different from the main member 1, and an attachment which can be welded to the main member 1. And an auxiliary member 3. The auxiliary member 2 is connected to the main member 1.
The auxiliary mounting member 3 is attached to the outer surface of the main member 1 so that the outer edge 4 of the auxiliary member 2 is clamped between the mounting auxiliary member 3 and the main member 1. Abutment
A golf club head characterized by being welded. 5. A sub member 2 made of a different material is brought into contact with a metal main member 1 occupying a majority of the weight of the head, and a mounting auxiliary member 3 weldable to the main member 1 is attached to the sub member 2. The sub-member 2 is brought into contact with the outer surface of the main member 1 so as to cover the outer end edge 4, and then the mounting auxiliary member 3 is welded to the outer surface of the main member 1 to form an outer end of the sub-member 2. The rim 4 is fixedly clamped between the main member 1 and the auxiliary mounting member 3, and then the main member 1, the weld metal 10 by welding and the outer surface of the auxiliary mounting member 3 are polished so as to be continuous. A method of manufacturing a golf club head.