JPH0793955B2 - Wood club head for golf - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a head structure of a wood club for golf, which includes a hitting portion, a sole portion and a hosel portion separately.
By dividing and joining to each other, the characteristics of the members constituting the head are improved and the degree of freedom in designing the head is increased.

[Prior Art] Conventionally, a golf club head for golf of this type is, for example, a wood club made of wood such as Persimmon.
A soft material such as foam in the hollow or core part, such as a solid or continuous solid head structure or a wood club made of metal or fiber reinforced plastic (hereinafter abbreviated as FRP). It has a shell structure filled with.

However, in such a conventional wood club head, the entire head is basically of a single material structure, and in particular, the hosel part to which the shaft is inserted is not attached to other face parts. The present situation is that the sole part, the crown part, and the back part are continuously and integrally formed.

[PROBLEMS TO BE SOLVED BY THE INVENTION] Therefore, in the above wood wood club head, the strength of the hosel portion is weaker than that of other metal and FRP materials, and the hosel portion is easily broken. It is necessary to form a thick and long structure, and the center of gravity of the head also becomes high.

Also, with metal wood club heads, general stainless steel material has a high specific gravity, so it is necessary to reduce the overall shape of the head in order to reduce the weight, and there is less freedom in design, and the hosel part Is heavy, and the position of the center of gravity of the head tends to be high.

Further, in the FRP wood club head, even if it has a shell structure, the void ratio of the entire head is low, and it is possible to increase the flight distance, directionality and feel of the ball at the face portion forming the hitting surface. Since it is difficult to impart elasticity and rigidity and the hosel portion cannot be bent and deformed, it is not possible to make adjustments according to the predetermined lie angle and loft angle.

[Object of the Invention] An object of the present invention is to provide proper elasticity and rigidity for enhancing the flight distance, directionality and shot feeling of a ball by separating and independently separating the characteristics of the hitting section and the characteristics of the sole section and the hosel section. It is to provide a wood club head for golf which is capable of imparting

[Means for Achieving the Object] In order to achieve the above object, the present invention forms a head by separating a hitting body, a sole member, and a hosel member from each other, and a shaft is attached to the hosel member. And a connecting piece portion extending from the cylindrical portion are made of a metal material, and the connecting piece portion of the hosel member is held and joined by the hitting body and the sole member. It was done.

Further, according to the present invention, the connecting piece portion of the hosel member is fitted in a recess formed in the hitting body.

In this case, when the hit ball is joined to the hosel member together with the sole member, it is preferable that the hosel member is plastically deformable according to predetermined lie angle and loft angle.

[Structure of the Invention] The structure of the present invention will be described below with reference to the drawings. As shown in FIG. 2, reference numeral 1 in the drawing denotes a golf wood club head according to the present invention.

The head 1 is composed of a face portion 1A, a back portion 1B, a crown portion 1C, a sole portion 1D, and a hosel portion 1E into which a shaft S is inserted.

The hit ball 2 of the head 1 including the face portion 1A, the back portion 1B and the crown portion 1C is made of an FRP material having a one-piece shell structure as shown in FIGS. 1 and 3, and the sole portion 1D and A face plate 3 is formed separately from the hosel part 1E, and a face face plate 3 is attached to the face part 1A as needed.

Further, the sole portion 1D of the head 1 is formed of a sole member 4 made of a metal plate material having a high specific gravity such as brass or stainless steel or a low specific gravity such as aluminum or titanium, while the hosel portion 1E is The hosel portion 1E can be formed by forging or casting, since the hosel portion 1E is made of a metal material having a low specific gravity such as aluminum or titanium.

The hosel portion 1E of the head 1 includes a cylindrical portion 5 into which the shaft S is inserted, an extension portion 6 extending downward from the cylindrical portion 5, and a sole portion at a lower end portion 6a of the extension portion 6.
The hosel member 8 is formed by the connecting piece portion 7 that is bent toward the 1D side, and the extension portion 6 that forms a part of the connecting piece portion 7 is plastically deformable according to a predetermined loft angle and lie angle. The sole member 4 constituting the sole portion 1D is coupled to the lower surface side of the connecting piece portion 7 while being bent and adjusted.

That is, the head 1 is composed of a combination of a ball striking body 2, a sole member 4, and a hosel member 8 divided into three parts, and a connecting piece portion 7 of the hosel member 8 is sandwiched between the ball striking body 2 and the sole member 4. Then, they are arranged in combination and are joined and integrated with each other by screws 9.

FIG. 4 shows another example of joining the hitting body 2 and the hosel member 8 to each other. The sole member 4 is joined to the lower surface side of the connecting piece portion 7 of the hosel member 8 and the hitting body is also shown. The extension portion 6 of the hosel member 8 is fitted into the concave portion 21 formed in 2 and is joined by a screw or an adhesive agent.

By the way, the FRP constituting the ball-striking body 2 having the one-piece shell structure has a relatively low specific gravity and high rigidity, and examples of the woven or knitted form of the reinforcing fibers include roving, plain weave cloth, twill cloth or bias cloth. One of
Or a combination of two or more kinds thereof, and as the kind of the fiber material thereof, fibers such as carbon, glass, silica, boron, and aramid are used alone or in combination of two or more kinds, and As the matrix synthetic resin impregnated in the fibers, epoxy resin, unsaturated polyester resin, epoxy acrylate resin or the like is preferably used, and the thickness thereof is different in each surface, but is set in the range of 4 to 12 mm. Has been done.

[Operation] Therefore, in the wood club head of the present invention having the above-described configuration, the head 1 has a hit ball 2 including the face portion 1A, the back portion 1B and the crown portion 1C, the sole member 4 of the sole portion 1D and the hosel portion 1E. Since it is formed separately from the hosel member 8 of FIG.
It becomes possible to separately mold into a piece shell structure, good moldability and high quality are obtained, which makes it possible to
Appropriate resilience and rigidity capable of enhancing the flight distance, directionality and shot feeling of the ball can be imparted to the face portion 1A forming the hitting surface.

Further, since the extension portion 6 of the hosel member 8 made of a metal material is plastically deformable, the bending adjustment according to the predetermined loft angle and lie angle can be easily performed.

Further, in the present invention, since the hosel member 8 is not integrally molded with the hitting body 2 which constitutes the head 1, the joining is performed by the screw 9 or the like as shown in FIG. Filling with a soft material improves the bonding effect.

[Advantages of the Invention] As is apparent from the above description, the present invention is directed to a ball hitting body including a face portion, a back portion, and a crown portion.
Since the sole member of the sole portion and the hosel member of the hosel portion are separately formed, materials for the ball striking body, the sole member and the hosel member are freely and independently selected according to required characteristics. Therefore, the degree of freedom in designing the head can be increased, and in particular, the hitting body can be separately molded into the one-piece shell structure having the highest void ratio.

As a result, good moldability and high quality can be obtained, and the flight distance of the ball can be
Appropriate elasticity and rigidity that can enhance the directionality and feel at impact can be imparted.

Further, since the hosel member is made of a plastically deformable metal material, it is possible to perform bending adjustment according to a predetermined loft angle and lie angle.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a wood club head for golf according to the present invention, FIG. 2 is a rear view of the same head, FIG. 3 is an exploded perspective view of the same head, and FIG. 4 is related to the present invention. FIG. 8 is an exploded perspective view of a head showing another embodiment. [Explanation of symbols] 1 head, 1A face part, 1B back part, 1C crown part, 1D sole part, 1E hosel part, 2 hit ball, 4 sole Member, 5 ... Cylindrical part, 6 ... Extension part, 6a ... Lower end part, 7 ... Connecting piece part, 8 ... Hosel member, 9 ... Screw.

Claims (2)

[Claims] 1. A head is formed on a ball striking body, a sole member and a hosel member separately from each other, and the hosel member includes a cylindrical portion into which a shaft is inserted,
The golf club is formed of a metal material including a connecting piece extending from the cylindrical portion and connected, and the connecting piece of the hosel member is held and joined by the hitting body and the sole member. For wood club head. 2. The golf wood club head according to claim 1, wherein the connecting piece portion of the hosel member is fitted into a recess formed in the ball striking body.