JPH0642697Y2 - Metal Wood Golf Club Head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention relates to a metal wood golf club head, and more particularly, to facilitate the assembly of a shaft and to drop a weight into a hollow portion of the club head. The present invention relates to a metal wood golf club head that effectively prevents

[Conventional technology]

Conventionally, a metal wood golf club head has a shaft insertion hole 3 formed in a hosel portion 2 of a club head 1 as shown in FIG. 5 and FIG. The shaft was inserted and fixed.

By the way, as shown in FIG. 6, the shaft insertion hole 3 formed in the hosel portion 2 is opened in the hollow portion 1a of the club head 1 in accordance with the outer diameter of the shaft.

[Problems to be solved by the invention]

However, in the case where the shaft insertion hole 3 is directly communicated with the hollow portion 1a of the club head 1 with a predetermined inner diameter as described above, in order to adjust the weight of the club head 1, the tip side of the shaft When attaching the weight to the tip portion, it is extremely difficult to fix the weight, and there is a problem that the weight falls off into the hollow portion of the head due to the impact of a hit ball. In addition, when the shaft is assembled, if the shaft is inserted into the shaft insertion hole 3, it will be inserted into the hollow portion 1a of the club head 1, which makes it difficult to match the insertion depth to the hosel portion 2. It was

[Purpose of device]

This invention was devised by focusing on such a conventional problem. Even when a weight is attached to the tip end of the shaft, the weight can be easily fixed, and the weight is blown by the impact of a hit ball. It is an object of the present invention to provide a metal wood golf club head which does not have a problem of falling off into a portion and can be easily assembled with a hosel portion of a shaft.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the gist of the present invention is to provide a flange-shaped stopper portion projecting inwardly on the inner wall surface at or near the deep end portion of the shaft insertion hole formed in the hosel portion. Is.

The stopper portion is formed so as to project inwardly on a part or the entire circumference of the inner wall surface at or near the deep end portion of the shaft insertion hole.

[Function of device]

In this invention, as described above, since the flange-shaped shaft and the stopper portion for the weight are provided inwardly on the inner wall surface at or near the deep end portion of the shaft insertion hole, the shaft is attached to the hosel portion. Even when inserting into the formed shaft insertion hole and assembling, you can position by simply inserting the shaft until it contacts the stopper part,
Further, even when the weight is attached to the tip end portion of the shaft, since the weight comes into contact with and is supported by the stopper portion, the weight does not fall into the hollow portion of the head due to the impact of a hit ball.

[Example of device]

 An embodiment of the present invention will be described below with reference to the accompanying drawings.

In addition, in the following description, the same components as those of the above-described conventional example are denoted by the same reference numerals.

FIG. 1 is a sectional view of a hosel portion 2 of a metal wood golf club head 1 embodying the present invention, and FIG. 2 is a shaft insertion hole 3 formed in the hosel portion 2 and a weight W is attached to the tip end portion of the tip side. The sectional view of the mounted shaft 4 is shown, and the inner wall surface 3a of the deep end of the shaft insertion hole 3 formed in the hosel part 2 is for the shaft 4 and the weight W that are flange-shaped toward the inside. The stopper portion 5 is formed so as to project.

The shape of the stopper portion 5 is as shown in FIG.
As shown in C, D, and E, various shapes are conceivable. For example, in FIG. 4A, a flange-shaped projection 6a is formed on the inner wall surface 3a at the deep end of the shaft insertion hole 3. Yes, the fourth
B of the figure shows four projections 6b formed at intervals of 90 degrees with respect to the shaft insertion hole 3, and C of FIG. 4 shows a flange on the inner wall surface 3a of the shaft insertion hole 3 at about 180 degrees. Protrusion 6c
Is formed.

Further, FIG. 4D shows a stopper 5 formed by forming a projection 6d so as to close approximately 180 degrees of the shaft insertion hole 3, and FIG. The projection 6c is shown as a perspective view.

The position where the stopper portion 5 is formed is not limited to the inner wall surface 3a of the deep end portion of the shaft insertion hole 3 described above, but may be formed in the vicinity thereof.

With the above configuration, even when the shaft 4 is inserted into the shaft insertion hole 3 formed in the hosel portion 2 for assembly, the shaft 4 can be positioned by merely inserting the shaft 4 until it comes into contact with the stopper portion 5. Even when attaching the weight W to the tip end of 4,
Since the weight W comes into contact with and is supported by the stopper portion 5, it is possible to solve the problem that the weight W is dropped into the head hollow portion 1a by the impact of the hit ball.

Further, the size of the opening portion 7 connected to the head hollow portion 1a of the club head 1 excluding the stopper portion 5 of the shaft insertion hole 3 is made of urethane foam or the like for the purpose of reinforcing the strength or improving the tapping sound in the head hollow portion 1a. In the case of injecting and foaming, it is necessary to open the urethane foam to a size that does not hinder the injection.

In FIG. 2, reference numeral 8 denotes a socket that covers the end portion of the hosel portion 2 and the shaft 4.

FIG. 3 shows a second embodiment of the present invention, in which the hosel portion 2 is projected into the head hollow portion 1a of the club head 1 to increase the contact area between the club head 1 and the shaft 4. The feeling is improved by increasing the sense of unity.
On the inner wall surface 3a of the deep end portion of the shaft insertion hole 3 projected into the inside of 1a, the stop portion 5 of various shapes shown in a, b, c, d, and e of FIG. It is a thing.

Since the other configurations and effects are the same as those of the above-described embodiment, the same reference numerals are given and description thereof will be omitted.

[Purpose of device]

According to this invention, since the flange-like stopper portion is formed to project inwardly on the inner wall surface at or near the deep end of the shaft insertion hole formed in the hosel portion as described above, the shaft is formed in the hosel portion. Even when inserting into the formed shaft insertion hole and assembling, it is possible to position by simply inserting the shaft until it comes into contact with the stopper part, so assembly can be done very easily, especially when not using a socket in metal wood. Is particularly effective, and when a weight is attached to the tip end of the shaft for assembly, the weight comes into contact with and is supported by the stopper portion, so that the weight can be completely fixed, and in particular, the ball can be hit. The effect of effectively preventing the weight from falling into the hollow part of the head due to the impact of A.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a hosel portion of a metal wood golf club head embodying the present invention, and FIG. 2 is a shaft insertion hole formed in the hosel portion with a shaft having a weight attached to a tip end portion thereof. FIG. 3 is a sectional view in a state of being embedded, FIG. 3 is a view similar to FIG. 1 showing another embodiment of the present invention,
4A, 4B, 4C, 4D and 4E are explanatory views showing various shapes of the stopper portion formed on the inner wall surface of the deep end portion of the shaft insertion hole, and FIG. 5 is a conventional metal wood golf. FIG. 6 is a front view of the club head, and FIG. 6 is a sectional view of a hosel portion of a conventional club head. 1 ... Wood golf club head, 2 ... Hosel part, 3 ...
Shaft insertion hole, 3a ... inner wall surface, 4 ... shaft, 5 ... stopper portion, W ... weight.

Claims (1)

[Scope of utility model registration request] 1. A metal wood golf club head in which a shaft insertion hole is formed in a hosel portion of a metal wood golf club head, and a club shaft is inserted and fixed in the shaft insertion hole. A metal wood golf club head, characterized in that a flange-like stopper portion is provided so as to project inwardly on a part or the entire circumference of the inner wall surface at or near the deep end portion of the shaft insertion hole formed in the portion. .