JP2606628B2 - Golf wood club head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to golf wood club heads.

[0002]

2. Description of the Related Art Golf wood club heads are made of metal and have a hollow structure. In this type of wood club head, for example, respective outer shell members such as a sole portion, a face portion, and a crown portion are manufactured by casting or forging, and these outer shell members are joined by welding or the like. Further, each outer shell member has a substantially uniform thickness due to manufacturing problems. Further, in addition to the outer shell member, there is also a wood club head in which a skeletal member for reinforcement is fixed inside.

[0003] By the way, depending on the weight distribution of each part of the head, the hit ball changes even if other conditions are the same. vice versa,
There is an appropriate weight distribution for each player depending on the habit and the like.

However, conventional wood club heads are:
If the outer shell member is constant, the weight distribution is constant, and in order to change the weight distribution, each outer shell member itself such as a sole portion, a face portion, and a crown portion is changed to one having a different thickness or shape.

[0005] As described above, in the conventional hollow wood club head made of metal, the weight distribution is restricted, and it is impossible to cope with the habit of each player. Further, in order to change the weight distribution, since the respective outer shell members such as the sole portion, the face portion, and the crown portion are changed, there is a problem that the manufacturing efficiency is low and the outer shape of the head is restricted.

Therefore, conventionally, it has been proposed to fix a weight body in the head body by welding in order to set the weight distribution of each part of the head. Conventionally, the weight has a prismatic shape, but it takes time and effort to weld the prismatic weight in a narrow head body.

[0007]

As described above, in the conventional golf wood club head in which the weight is welded in the head body for setting the weight distribution, the weight has a prismatic shape. There was a problem that took time.

An object of the present invention is to solve such a problem, and it is an object of the present invention to make it possible to easily weld a weight body in a head body of a hollow golf wood club head made of metal. I do.

[0009]

According to a first aspect of the present invention, there is provided a golf club head made of metal and hollow, comprising: a weight body for setting a weight distribution of each part of the head; And the weight is tapered toward the opposite side from the joining surface to the inner surface of the head body.

[0010] Further, the invention of claim 2 is the above-mentioned claim 1.
In the wood club head according to the invention, the head body and the weight are made of a titanium alloy.

[0011]

The golf wood club head according to the first aspect of the present invention has a weight body welded and fixed at an appropriate position in a hollow head body made of metal, so that each part of the head remains the same while maintaining the same head body. The weight distribution is set.
For example, if the weight is attached to the bottom, the center of gravity of the entire head will be lowered and the ball will rise easily, if attached to the heel side, it will be an effective head for those who tend to hook, and if attached to the toe side, it will slice An effective head for those who tend. At the time of welding the weight, the weight is tapered from the joint surface to the inner surface of the head body toward the opposite side, so that welding work is easy.

Further, in the golf wood club head according to the second aspect of the present invention, the head body made of a titanium alloy can be made lightweight and high in strength, and the weight body is made of a titanium alloy. The body can be welded to the head body without any problems.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. The wood club of this embodiment is a so-called metal wood, and the head 1 is made of metal and hollow. The main body of the head 1 includes a main body member 2, a face member 3, and a crown member 4. These members 2, 3, and 4 are made of a titanium alloy and are welded to each other. The main body member 2 forms a sole 6, a heel 7, a toe 8, and a back 9 of the head 1. 11 is a pipe-shaped neck member,
The neck member 11 is made of a titanium alloy, and the tip is welded to the heel 7 side on the bottom surface in the main body member 2, and the middle portion is located behind the upper edges of the main body member 2 and the face member 3 and the crown member 4. Welded to the end. The neck member 11 is to which the shaft 12 is connected. Further, a weight 16 made of a titanium alloy is fixed to the lower back 9 side of the inner surface of the main body member 2. This fixing is performed by welding the peripheral portion of the back surface of the weight body 16 to the main body member 2. The back surface of the weight body 16 is formed into a curved surface that is substantially the same as the inner surface shape of the bag 9, and is applied to the inner surface of the bag 9 without any gap. At the same time, the weight body 16 has a substantially quadrangular pyramid shape, and tapers from the back surface, that is, the bonding surface to the bag 9 toward the opposite side. After welding the members 2, 3, 4, and 11, the head 1 is filled with a filler such as urethane foam via a pipe-shaped neck member 11.

FIG. 3 and FIG. 4 show a second embodiment of the present invention. Weight
17 is fixed. Also in this second embodiment, the weight body 17 has a substantially quadrangular pyramid shape.
It is tapered from the back, which is almost the same shape as the opposite direction. The weight body 17 includes a weight base 17a made of a titanium alloy and welded to the same main body member 2, and a weight body 17b mechanically fixed to the weight base 17a.
The weight body 17b is made of a material having a higher specific gravity than a titanium alloy such as copper, copper alloy or iron. That is, FIG.
As shown in the figure, a screw hole 17c formed in the weight base 17a
The threaded portion 17d formed on the weight body 17b is screwed into the threaded portion.

As in the third embodiment shown in FIG. 5, the weight base 17a and the weight body 17b may be fixed by screws 21 separate from them.

FIG. 4 shows a fourth embodiment of the present invention. In the fourth embodiment, the weight 18 is located at a position below the inner surface of the main body member 2 on the back 9 side and from the toe 8. Is fixed. The weight body 18 is also substantially quadrangular pyramid-shaped, and tapers from the back surface, which is substantially the same shape as the bag 9, to the opposite side.

As described above, by fixing the weights 16, 17, 18 at appropriate positions in the main body of the head 1, the head 1
Weight distribution of each part can be appropriately set. Then, as in the above embodiments, the weights 16, 17, 18 are provided below the head 1 to lower the center of gravity of the entire head 1, so that the hit ball can easily rise and the flight distance is extended. At the same time, the weights 16, 17, 18 are provided on the back 9 side so that the center of gravity of the entire head 1 is on the back 9 side, so that a so-called sweet spot is widened. Further, as in the second embodiment, if the weight 17 is provided on the heel 7 side and the center of gravity of the entire head 1 is on the heel 7 side, the head 1 is effective for a hooker.
On the other hand, when the weight 18 is provided on the toe 8 side and the center of gravity of the entire head 1 is on the toe 8 side as in the fourth embodiment, the head 1 is effective for a slicer. Thus, head 1
By appropriately setting the weight distribution, the heads 1 can be freely provided that match the skills and habits of each player. In addition, the main body member 2, the face member 3, the crown member 4, and the neck member 11 forming the main body of the head 1
Since they can be used in common, production efficiency is high. Further, the outer shape of the head 1 is not restricted by weight distribution, and the outer shape can be set as appropriate.

Further, by making the back surface shape of the weights 16, 17, 18 substantially coincide with the inner surface shape of the main body member 2, the weight 1
6, 17, and 18 can be reliably welded to the main body member 2. Further, by forming the weights 16, 17, 18 into a quadrangular pyramid shape that tapers from the back surface toward the opposite side, welding can be easily performed without hindrance in the narrow main body member 2 during welding work.

By making the head 1 made of a titanium alloy, the head 1 can be made lightweight and high in strength. However, the weights 16, 17, 18 fixed to the main body of the head 1 made of a titanium alloy are For welding, a titanium alloy is desirable. However, the weights 16 and 18 made of a light titanium alloy have a small effect of setting the weight distribution. On the other hand, as in the second embodiment, the weight body 17b made of a heavier metal is fixed to the weight base 17a made of a titanium alloy to be welded to the body member 2 with screws or the like, so that the weight is reduced. The weight of the entire body 17 can be increased, and the effect of the weight distribution setting can be increased.

The position at which the weight is provided is not limited to the positions of the first to third embodiments, but can be appropriately set according to the purpose.

FIG. 5 shows a fifth embodiment of the present invention. In the fifth embodiment, a weight body 19 is also welded to the back 9 side of the lower inner surface of the main body 2 of the head 1. However, a concave portion 19a is formed in the weight 19. In production,
The weight distribution can be set efficiently by changing the shape of the weight 19 by cutting or the like while keeping the material and the welding position of the weight 19 constant. Also in the fifth embodiment, the back surface of the weight body 19 is formed into a curved surface that is substantially the same as the inner surface shape of the bag 9, and the portion to be welded is tapered from the back surface to the opposite side.

In the above embodiment, the main body of the head 1 is constituted by three divisions of the main body member 2, the face member 3, and the crown member 4. However, the division is not limited thereto.
The sole member may be further separated from the main body member. Further, the material of the head body and the material of the weight are not limited to titanium alloy. In addition, the head body and the weight may be made of different materials.

[0023]

According to the first aspect of the present invention, in a hollow golf wood club head made of metal, since the weight for setting the weight distribution of each part of the head is fixed inside the head body, the weight of each part is reduced. The distribution can be appropriately set, and a wood club head suitable for each player's skill can be provided. Further, since the weight body has a tapered shape from the joint surface to the inner surface of the head body toward the opposite side, welding work inside the narrow head body can be easily performed.

Furthermore, according to the second aspect of the present invention, since the head body and the weight are made of a titanium alloy, the head can be made lightweight and high in strength, and the weight can be welded to the head body without any problem. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a golf wood club head according to the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is an exploded perspective view showing a second embodiment of the present invention.

FIG. 4 is a cross-sectional view of the above-mentioned weight body portion.

FIG. 5 is a sectional view of a weight portion showing a third embodiment of the present invention.

FIG. 6 is an exploded perspective view showing a fourth embodiment of the present invention.

FIG. 7 is an exploded perspective view showing a fifth embodiment of the present invention.

[Explanation of symbols]

 1 head 16 weights 17 weights 18 weights 19 weights

Claims (2)

(57) [Claims] 1. A hollow golf wood club head made of metal, a weight for setting the weight distribution of each part of the head is fixed by welding to the inside of the head main body, and the weight is an inner surface of the head main body. A wood club head for golf, characterized in that it has a tapered shape from the joining surface to the opposite side. 2. The golf wood club head according to claim 1, wherein the head body and the weight body are made of a titanium alloy.