JPH07275406A - Wood club head for golf - Google Patents

Abstract

PURPOSE:To properly distribute weight at the head and to facilitate manufacture as well. CONSTITUTION:A main body 1a of the head is constituted by mutually welding 1st, 2nd, 3rd and 4th outer shell members 11a, 12a, 13a and 14a. The 1st outer shell member 11a forms the part of a phase 2a. The 2nd outer shell member 12a forms the side of back 3a. The 3rd outer shell member 13a forms the parts of a sole 4a, toe 6a and heel 7a and the remaining part of the back 3a. The 4th outer shell member 14a forms the remaining part of top 5a. The 2nd outer shell member 12a is thickened and also used as a weight. Therefore, the depth of gravity is deepened and a sweet area is expanded. Further, any weight separated from the outer shell members is not required.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf wood club head, and more particularly to a metal hollow head.

[0002]

2. Description of the Related Art Conventionally, there is known a golf wood club head in which the head main body is made of metal and is hollow, as described in, for example, JP-A-63-154186.
It is so-called metal wood. In the head described in the above publication, two or three outer shell members formed by forging are welded to form a head body. The division is, for example, a face portion, a sole portion, a toe portion, a heel portion, a back portion, and a top portion. Further, in the head described in the above publication, the center of gravity of the entire head is set to the rear side (the center of gravity depth is deepened), and in order to widen the sweet area, the inside of the outer shell member forming the sole portion and the back portion is formed. A separate small weight is fixed to the rear side of the lower part. It should be noted that the sweet area is an area where the shot ball flies stably and straightly on the face, which is the striking surface of the ball.

However, in the above-mentioned conventional structure, a small weight separate from the outer shell member is used for setting the weight distribution in the head, so that the weight distribution is concentrated.
It is difficult to obtain proper weight distribution. To solve this, the weight should be increased, but in order to weld a large weight to the inner surface of the outer shell member, it is necessary to process the weight to match the shape of the head outer shell, which increases the number of steps. .

[0004]

As described above, in the conventional metal hollow golf wood club head, the outer shell member formed by dividing the head body into two or three parts is joined, and the depth of the center of gravity is further increased. In order to increase the depth, a separate small weight was fixed to the outer shell member, so it was difficult to obtain an appropriate weight distribution, and particularly when trying to increase the weight, there was a problem that the number of manufacturing steps was increased.

SUMMARY OF THE INVENTION The present invention is intended to solve the above problems, and an object of the present invention is to provide a golf wood club head which enables proper weight distribution and is easy to manufacture.

[0006]

In order to achieve the above object, a golf wood club head according to the invention of claim 1 has the following features:
The metal hollow head body includes a first outer shell member forming a front face portion, a second outer shell member forming a back side, and a sole portion, a toe portion, a heel portion, and the rest of the back portion. The third outer shell member forming the above portion and the fourth outer shell member forming the remaining portion of the top portion are divided into four, and these four outer shell members are joined together.

According to a second aspect of the invention, in the golf wood club head of the first aspect of the invention, the four outer shell members are made of the same material, and the second outer shell member is the third outer shell member. And it is thicker than the fourth outer shell member.

[0008]

In the golf wood club head of the present invention, the head body is formed by joining the first outer shell member, the second outer shell member, the third outer shell member and the fourth outer shell member. The overall weight distribution can be set as appropriate by changing the wall thickness of each outer shell member. In particular, by making the second outer shell member forming the back side heavy, the depth of the center of gravity can be deepened and the sweet area can be widened.

Furthermore, in the wood club head for golf according to the second aspect of the present invention, the four outer shell members are made of the same material, while the second outer shell member is made thick to make it heavy. There is. The outer shell members made of the same material can be welded to each other without any trouble.

[0010]

Embodiments of the golf wood club head according to the present invention will be described below with reference to the drawings. Note that, in the reference numerals shown in the drawings, the same numerals are used for the corresponding portions between the respective embodiments, and the different lowercase letters are attached to the respective embodiments.

First, a first embodiment will be described with reference to FIGS. In the golf wood club head of this embodiment, the head body 1a is made of a hollow metal. This metal is
This includes pure titanium, titanium alloys (specific gravity about 4.6), stainless steel and other light alloys. Further, in the drawing, 2a is a front face, 3a is a rear back, 4a is a lower sole, and 5a is
Is the upper top, 6a is the toe on one side, 7a is the heel on the other side,
8a is a neck, and a shaft 10a is connected to a shaft connecting pipe 9a fixed in the neck 8a.

The head body 1a is divided into four parts, a first outer shell member 11a, a second outer shell member 12a, a third outer shell member 13a and a fourth outer shell member 14a. The outer shell members 11a, 12a, 13a, 14a are joined together. The first outer shell member 11a forms the face 2a portion. The second outer shell member 12a, which also serves as a weight, includes a back 3a and a sole adjacent to the back 3a.
The portions 4a and the top 5a are formed on the back 3a side. The third outer shell member 13a includes a sole 4a and a toe 6a.
And the remaining portion of the heel portion 7a and the back portion 3a. The fourth outer shell member 14a forms the remaining portion of the top 5a portion. Also, each outer shell member 11a
, 12a, 13a, 14a are made of the same material, but the thickness of the first outer shell member 11a, which requires the highest strength, is the thickest, and the second outer shell member 12a and the third outer shell member 13a are the thickest. The fourth outer shell member 14a becomes thinner in this order.

Next, a method of manufacturing the head will be described. The outer shell members 11a, 12a, 13a, 14a are basically made by press working or forging, but casting is also possible. And four outer shell members 11a, 12a
, 13a, 14a are welded to each other and joined to form the head body 1a. The neck 8a is formed by abutting the semi-cylindrical portions 15a and 16a formed on the third outer shell member 13a and the fourth outer shell member 14a, respectively. , The semi-cylindrical portions 15a and 16a are sandwiched, and the lower end is butted against the sole 4a portion in the third outer shell member 13a and welded. Further, if necessary, a filling material (not shown) such as urethane foam is filled in the head body 1a through the shaft connecting pipe 9a. Then, the shaft 10a is connected to the shaft connecting pipe 9a. Further, finish processing is performed.

According to the configuration of the above embodiment, the head body 1a
The four outer shell members 11a and 12a
, 13a, 14a, or the like, the thickness distribution of the entire head can be set appropriately and the weight distribution can be made appropriate. In particular, since the second outer shell member 12a forming only the back 3a side is provided and the second outer shell member 12a is made thick and heavy, the depth of the center of gravity can be deepened and the sweet area can be widened. That is, in a wide range of the face 2a, the shot ball comes to fly stably and straightly. Since it is not necessary to provide weights separate from the outer shell members 11a, 12a, 13a, and 14a for setting the weight distribution as described above, the man-hours for the weights are not necessary in manufacturing and the manufacturing is facilitated. . The weight of each outer shell member 11a, 12a, 13a, 14a is set according to the thickness of each outer shell member 11a, 12a, 13a, 13a.
Since a and 14a are made of the same material, these outer shell members 11a and
This is advantageous in welding 12a, 13a, and 14a to each other.

FIG. 4 shows a second embodiment.
In the embodiment, the second outer shell member 12b forming the back 3b side is located closer to the toe 6b side. FIG. 5 shows a third embodiment. In the third embodiment, the second outer shell member 12c forming the back 3c side is reversely positioned on the heel 7c side. When the second outer shell member 12b, which is thick and also serves as a weight, is located closer to the toe 6b side as in the second embodiment, the weight distribution of the head is more biased toward the toe 6b side and the player tends to slice. Become a suitable wood club. On the other hand, when the second outer shell member 12c is located closer to the heel 7c side as in the third embodiment, the weight distribution of the head is more biased toward the heel 7c side, and a wood club suitable for a player who tends to hook is formed. Become.

In the above embodiment, the second outer shell member 12
a, 12b, 12c are soles 4 with the backs 3a, 3b, 3c sandwiched therebetween.
Although a part of a, 4b, 4c and tops 5a, 5b, 5c are also formed, the invention is not limited to this. For example, in the fourth embodiment shown in FIG. 6, the second outer shell member 12d
Defines only a part of the back 3d portion and the sole 4d portion, and the top 5d portion is entirely formed by the fourth outer shell member 14d. In this way, the second outer shell member 12d, which is thick and also serves as a weight, is positioned so as to be biased downward, so that the center of gravity can be further lowered. When the center of gravity is lowered, the shot ball easily rises, and the ball foot becomes long and stable.

On the other hand, in the fifth embodiment shown in FIG. 7, the second outer shell member 12e forms only a part of the back 3e part and the top 5e part, and the sole 4e part is the third part. It is formed by the outer shell member 13e. In this way, by locating the second outer shell member 12e, which also functions as a weight, in a more biased position, the rising angle of the shot ball can be suppressed. This is good for players who tend to overshoot the ball.

Further, as in the above-mentioned embodiment, the second outer shell member or the other outer shell member does not necessarily have to have a uniform wall thickness at each part. For example, in the sixth embodiment shown in FIG. 8, the thickness of the second outer shell member 12f gradually increases from the heel 7f side to the toe 6f side. On the other hand, in the seventh embodiment shown in FIG. 9, the second outer shell member is used.
The wall thickness of 12g gradually increases from the toe 6g side to the heel 7g side. In the sixth embodiment, the weight distribution of the head is more biased toward the toe 6f side, and the wood club is suitable for the player who tends to slice. On the other hand, the 7th
In the embodiment, the weight distribution of the head is more biased toward the heel 7g side, and the wood club is suitable for the player who tends to hook.

The present invention is not limited to the above-mentioned embodiments, and various modifications can be made.
For example, the shape of the outer shell member that divides the head main body into four is not limited to that of the above-described embodiment. Further, in the above embodiment, 4
Although the four outer shell members are made of the same material and the weight is set by setting the wall thickness, the four outer shell members are made of different materials as appropriate,
Thereby, the weight may be set. For example, the second outer shell member forming the back side may be made of a material having a larger specific gravity than other outer shell members.

[0020]

According to the first aspect of the present invention, the head body is made of metal and is hollow, the first outer shell member forming the face portion, the second outer shell member forming the back side, and the sole. Department,
The outer shell member is divided into four parts, that is, a third outer shell member that forms the remaining portion of the toe portion, the heel portion, and the back portion, and a fourth outer shell member that forms the remaining portion of the top portion. Since the heads are joined together, the weight distribution of the entire head can be made appropriate, and in particular, by making the second outer shell member heavy, the depth of the center of gravity can be deepened and the sweet area can be widened. Moreover, since the weight that is separate from the outer shell member is not used for setting the weight distribution, the number of man-hours for the weight is not required in manufacturing, and the manufacturing can be facilitated.

Further, according to the invention of claim 2, the four outer shell members are made of the same material, and the second outer shell member is thicker than the third outer shell member and the fourth outer shell member. Therefore, the outer shell members can be easily joined to each other by, for example, welding, and the second outer shell member can be made heavy.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a wood club head of the present invention.

FIG. 2 is a perspective view of the same.

FIG. 3 is a sectional view of the same.

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

FIG. 5 is an exploded perspective view showing a third embodiment of the wood club head of the present invention.

FIG. 6 is a sectional view showing a fourth embodiment of the wood club head of the present invention.

FIG. 7 is a sectional view showing a wood club head according to a fifth embodiment of the present invention.

FIG. 8 is a plan view of a second outer shell member and a third outer shell member showing a fourth embodiment of the wood club head of the present invention.

FIG. 9 is a plan view of a second outer shell member and a third outer shell member showing a fifth embodiment of the wood club head of the present invention.

[Explanation of symbols]

1a, 1d, 1e Head body 2a, 2b, 2c, 2d, 2e Face 3a, 3b, 3c, 3d, 3e, 3f, 3g Back 4a, 4b, 4c, 4d, 4e, 4f, 4g Sole 5a, 5b, 5c , 5d, 5e Top 6a, 6b, 6c, 6f, 6g Toe 7a, 7b, 7c, 7f, 7g Heel 11a, 11b, 11c, 11d, 11e First outer shell member 12a, 12b, 12c, 12d, 12e, 12f, 12g Second outer shell member 13a, 13b, 13c, 13d, 13e, 13f, 13g Third outer shell member 14a, 14b, 14c, 14d, 14e Fourth outer shell member

Claims (2)

[Claims] 1. A metal-made hollow head main body, a first outer shell member forming a front face portion, a second outer shell member forming a back side, a sole portion, a toe portion, and a heel portion. And a fourth outer shell member forming the remaining portion of the back portion and a fourth outer shell member forming the remaining portion of the top portion, and these four outer shell members are joined together. A golf wood club head that is characterized. 2. The four outer shell members are made of the same material, and the second outer shell member is thicker than the third outer shell member and the fourth outer shell member. The wood club head for golf according to claim 1.