JP2617894B2 - Golf wood club head - Google Patents

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 having a hollow metal shell structure, and more particularly to a golf club head having a ball body, a top shell, a bottom shell and a peripheral side shell. In addition to the three-part structure including the remaining shell part, the shaft is attached to the head main body by joining these three-part bodies.

[0002]

2. Description of the Related Art Conventionally, in a golf club head of this type (hereinafter, referred to as a metal head), a head made of a metal shell formed by press molding of, for example, iron, stainless steel or titanium (Ti) alloy. It is known that the main body is formed of a plurality of divided bodies, and these divided bodies are joined to each other by welding each other.

When a shaft is mounted on such a metal head, a head composed of each divided body is used.
Formed on the heel side end of the head body at the same time as welding the body
Mounted and fixed by welding by inserting the shaft into the neck that will be
And the lower end of the shaft to the bottom of the head body.
At present, it is performed by fixing .

[0004]

However, in the metal head of the conventional structure described above, the length of the shaft is reduced.
Dimensions are large, and each divided body forming the head body
Strong and stable due to the difficulty of welding work
The mounting condition cannot be obtained, and the head body and shaft
The mounting direction is likely to be unstable.

In addition, the mounting angle between the head body and the shaft
The problem that the degree cannot be corrected with high accuracy
was there.

An object of the present invention is to provide a head having a hollow metal shell structure composed of a plurality of divided bodies joined to each other .
Along with facilitating joining work and correction of shaft mounting angle
It is an object of the present invention to provide a golf club head for golf, which is capable of improving shaft mounting strength and stabilizing a shaft mounting direction.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a head body having a metal outer shell structure, which comprises a ball striking shell, an upper shell, a bottom shell and a peripheral side shell. In a golf wood club head formed by joining a three-part body with a remaining shell part including: and joining a shaft insertion member to the head body, at least the upper shell part of each of the divided bodies is inserted into the shaft. obtained by the bonding and comprising structure in the middle portion in the longitudinal direction of the member, the shafts
The middle part in the length direction of the insertion member means a part between the upper end and the lower end of the shaft insertion member.

In this case, if a stopper for regulating the insertion depth of the shaft is provided inside the shaft insertion hole formed in the upper end face of the shaft insertion member, it is convenient when the shaft and the head are joined. Further, the function and effect of the present invention can be obtained even if a locking portion is provided at a position in the longitudinal direction of the shaft insertion member.

[0009]

According to the present invention, by adopting the above-described structure, a hollow body composed of a three-piece body consisting of a ball striking shell, an upper shell, and a remaining shell including a bottom shell and a peripheral side shell is provided. A shaft insertion member is provided at a heel-side base end of a head body having a metal outer shell structure, and at least a heel-side end of an upper surface shell of each of the divided bodies is joined to an intermediate portion of the shaft insertion member. In addition, the joining position between each of the divided bodies and the shaft insertion member is stabilized, so that the joining operation can be easily performed, and the mounting direction can be stabilized.

Further, since a stopper for regulating the insertion depth of the shaft is provided inside the shaft insertion hole formed in the upper end surface of the shaft insertion member, the depth at which the shaft is inserted into the shaft insertion member is provided. Is regulated,
The joining state is stabilized, and the joining strength is increased.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. As shown in FIG. 1, reference numeral 1 in the figure denotes a golf wood club head body according to the present invention.

The head body 1 is made of a plurality of metal
A heel-side base end portion 2 having a hollow outer shell structure including shell portions 11, 12, and 13 of a thin plate material, and serving as a shaft mounting base portion.
, An insertion hole 3 is formed, and a shaft insertion member 4 is inserted and arranged separately in the insertion hole 3 and integrally provided by welding.

The shaft insertion member 4 is provided with the head
The main body 1, ie, each of the shells 11, 12, 13
A rod-shaped metal material with at least a weldable top
The rod-shaped body 5 is inserted through the insertion hole 3.
A small-diameter inner side lower portion 5a inserted into the main body 1;
Frustoconical thick radially outward with side upper portion exposed to the outside of the head body 1
5b. Of the rod 5
In the longitudinal direction of the inner diameter side lower part 5a and the larger diameter outer side upper part 5b
An opening end 3a of the insertion hole 3
The projection-like locking part 6 which is joined and locked and welded is stepped
In this state, they are integrally formed to protrude. On the other hand, the rod
The 5 thick radially outward with side upper 5b, blind hole-shaped shaft insertion hole 7 is provided, et al is, the inner bottom portion of the shaft insertion hole 7 of this 7
a for regulating the insertion depth of the shaft 8 described later.
It is used as a stopper .

As shown in FIG. 2, the above-mentioned head body 1 uses, as a metal sheet material constituting the outer shell, a metal sheet manufactured by, for example, rolling or the like. A plurality of divided bodies which are thinned by performing superplastic working, for example, a striking surface shell portion 11 which forms a striking surface surface which is formed by bending and extending an upper end edge 11a to form a front end portion of a head upper surface; The upper surface shell portion 12 forming the head upper surface and the other remaining shell portion 13, that is, the bottom surface side shell portion 14 and the rear side surface and the peripheral side surface shell portion 15 on the toe and heel side are divided into three parts so as to include the same. Each of these shells 11,
By welding and joining the parts 12 and 13 to each other, the head is formed so as to maintain the total weight of the head at most 210 g or less, preferably about 200 g.

The heel-side end 12 of the upper shell 12 corresponding to the heel-side base 2 of the head main body 1.
The heel-side end portion 13a of a and the remainder shell 13, the finisher
The semicircular notch joints 16 and 17 which become the insertion hole 3 of the shaft insertion member 4 are respectively formed, and these notch joints 16 and 17 are joined to the shaft insertion member 4 ,
Projections in the middle region of the rod-shaped body 5 of the shaft insertion member 4
If the Jo engaging portion 6 is formed, the locking part 6
The notch joints 16 and 17 are locked and welded respectively. At this time, the lower portion 5 of the rod-shaped body 5 on the small-diameter inner side.
When the “a” side is extended, the extended end thereof comes into contact with the bottom shell 14 on the bottom side of the head main body 1, so that it is possible to weld and fix each other. Moreover, the locking portion 6
The large-diameter external portion 5b of the rod-shaped body 5 in which
The heel side at those joints
The surface of the shell is smoothly continuous without any step
Are joined so that they are almost flat.
Such as grinding or polishing of the surface
Finishing can be easily performed.

[0016] In addition, in FIG. 8 in the shaft, the shaft
8 is a conventional metallic material or, for example, CFRP
The head 8 is made of a material different from the material of the head body 1, and the mounting end 8a of the shaft 8 is inserted into a shaft insertion hole 7 provided in the shaft insertion member 4 and adhered, thereby mounting the shaft 8 as shown in FIG. End 8a
Butt against inner bottom surface 7a that serves as stopper for ft insertion hole 7
In this state, the shaft 8 is mounted.

In the above embodiment, two parts of the upper shell part 12 and the heel-side ends 12a, 13a of the upper shell part 12 and the remaining shell part 13 constituting each divided body of the head main body 1 are formed in a rod-like shape of the shaft insertion member 4. Although it was joined to the middle part of the body 5, three parts including the ball striking shell 11 or only the heel side end 12a of the upper shell 12 may be joined.

[0018]

As is apparent from the above description, the present invention provides a hollow structure comprising a three-part structure of a ball striking shell, a top shell, and a remaining shell including a bottom shell and a peripheral side shell. A shaft insertion member is provided at the heel-side base end of the head body having a simple metal outer shell structure, and at least the heel-side end of the upper surface shell of each of the divided bodies is joined to an intermediate portion of the shaft insertion member. Therefore, the joining strength between each of the divided bodies and the shaft insertion member can be stabilized, whereby the joining operation can be easily performed and the mounting direction can be stabilized.

According to a second aspect of the present invention, a stopper for regulating the insertion depth of the shaft is provided inside the shaft insertion hole formed in the shaft insertion member.
The depth at which the shaft is inserted into the shaft insertion member is regulated, whereby the joining state thereof can be stabilized, and the joining strength can be increased.

Furthermore, when mounting the shaft to the head body, in order and the like are performed by bonding crowded difference shaft to the shaft insertion member, it is possible to mount without welding directly the shaft head , The mounting angle can be easily corrected.
I can .

Further, the weight of the entire head can be easily adjusted by adjusting the weight of the shaft insertion member.

[Brief description of the drawings]

FIG. 1 is an essential part cross-sectional view showing an embodiment of a golf wood club head according to the present invention.

FIG. 2 is an exploded perspective view showing an assembled state of the head.

[Explanation of symbols]

1 ... head body, 2 ... heel side base end, 4 ...
・ Shaft insertion member, 6 ・ ・ ・ Locking part, 7 ・ ・ ・ Shaft insertion hole, 7a ・ ・ ・Inner bottom surface (stopper) , 8.
..Shaft, 8a: mounting end, 11: ball striking shell, 12: upper shell, 12a: heel end, 13: remaining shell, 13a ... Heel side end,
14: bottom shell, 15: peripheral shell, 16, 1
7 ... Notch joint.

Claims (2)

(57) [Claims] 1. A head body having a metal outer shell structure is formed by joining a three-part body including a ball striking shell, an upper shell, and a remaining shell including a bottom shell and a peripheral shell, In a golf wood club head in which a shaft insertion member is joined to the head main body, at least a top shell portion of each of the divided bodies is joined at an intermediate portion in a longitudinal direction of the shaft insertion member. For wood club head. 2. A golf wood club head, wherein a stopper for regulating the insertion depth of the shaft is provided inside the shaft insertion hole of the shaft insertion member.