JP2000167090A - Metal wood head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wide-hitting-effective-area metal wood head with a face member forged integrally with a face portion, a hosel portion and a extension portion extending from the hosel portion to a hollow portion, whereby a sufficient driving distance and a comfortable hitting sound are obtained even when hitting a ball in an area on the face portion. SOLUTION: A gap 5 is provided between the hosel extension portion 4a of a face/hosel member 2 and the reverse 3d of a face portion and the thickness of a hosel extension separation area 3b projecting the gap 5 on the face portion 3 is almost the same as the thickness of a hitting a area 3a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal wood head, and more particularly, to a face portion and a hosel portion of a metal wood head having a hollow portion, and extending from the hosel portion into the hollow portion. The face hosel member, which is formed integrally with the hosel extension at the same time by forging, and the single or multiple members that form the crown, toe, back face, heel, and sole are joined and integrated. The present invention relates to an improvement of a face hosel member in a metal wood head formed as described above.

[0002]

2. Description of the Related Art Conventionally, a face portion of a metal wood head having a hollow portion, a hosel portion, and a hosel extension portion extending from the hosel portion into the hollow portion are simultaneously and integrally formed by forging. There is known a metal wood head in which a face hosel member and one or a plurality of members forming a crown portion, a toe portion, a back face portion, a heel portion, and a sole portion are joined and integrated.

For example, Japanese Patent Application Laid-Open No. Hei 8-266691 discloses that
The face portion of the metal wood head, and an extension portion and a hosel portion extending from the entire circumference of the face portion toward the rear of the head and a face and hosel member formed simultaneously and integrally by forging, and match the extension portion. A metal formed by joining and integrating a hemispherically shaped crown member and a sole / back face member with side walls standing upright from the sole part from the toe to the heel through the back face A woodhead is disclosed.

[0004]

However, the metal wood head disclosed in Japanese Patent Application Laid-Open No. 8-266691 has the following problems. As shown in FIGS. 8 to 11, the face hosel member 2 constituting the metal wood head is formed by forging a metal material having a shape such as a round bar into a face portion 3, a hosel portion 4, and the hosel portion. A hosel lower end portion 4a 'extending from the portion 4 toward the hollow portion is simultaneously and integrally formed. Therefore, the lie angle, the face angle, and the loft angle are not deviated, and the strength is high, so that the effect of significantly improving the hit ball durability is achieved. But,
The hosel lower end 4a 'is integrated with the face 3 in a state where the hosel lower end 4a' is built up from the face back 3c toward the face rear.
A hosel lower end integrated region 3 in the face 3 of the face hosel member 2 shown in FIGS.
The thickness of b ′ is extremely thick and non-uniform as compared with the thickness in the hitting area 3a designed in consideration of the resilience performance and hitting sound. Therefore, the metal wood head is integrated with the lower end portion of the hosel portion 3 b ′ of the face portion 3.
When the ball is hit with the ball, the repulsion performance is inferior to the case where the ball is hit with the ball hitting area 3a, so that the flight distance is reduced, and a low and dull unpleasant hitting sound is generated, resulting in a "miss shot". Had.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the invention of claim 1 is directed to a face portion and a hosel portion of a metal wood head having a hollow portion and extending from the hosel portion into the hollow portion. A face hosel member formed integrally with the provided hosel extension by forging processing, and a single or a plurality of members forming a crown, a toe, a back face, a heel, and a sole. In the metal wood head which is joined and integrated,
The face / hosel member is a metal wood head, wherein a gap is provided between the hosel extension and the back surface of the face.

According to a second aspect of the present invention, in the metal wood head according to the first aspect of the present invention, the face portion of the face hosel member has substantially the same thickness in a hitting ball region and in a hosel extension portion separation region. It is a metal wood head characterized by having.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing a metal wood head 1 according to an embodiment of the present invention, FIG. 2 is a perspective view showing a state before the metal wood head 1 is assembled, and FIG. 4 is a sectional view taken along line AA of FIG. 3, FIG. 5 is a sectional view taken along line BB of FIG. 3, and FIG. 6 is a sectional view of the face hosel member 2. As shown in FIG. It is a front view. The metal wood head 1 shown in FIG. 1 is a metal wood head having a hollow portion. The face portion 3 of the metal wood head 1 has a hitting area 3a designed in consideration of resilience performance and hitting sound, and a hitting area 3a described later. And a hosel extension portion separation region 3b in which a gap provided between the hosel extension portion and the back surface of the face portion is projected onto the face portion 3.

In the metal wood head 1, as shown in FIG. 2, the face portion 3, the hosel portion 4, and the hosel extension portion extending from the hosel portion 4 into the hollow portion are formed by forging. A face hosel member 2 and a crown member 6 having a crown portion 7 formed at the same time and a side wall portion 12 stand upright from a sole portion 13 from the toe portion 9 to the heel portion 11 through the back face portion 10. And back face member 8 formed by molding
Are assembled by joining them together.

As shown in FIGS. 3 to 6, a face hosel member 2 constituting the metal wood head 1 is provided.
The face portion 3 and the hosel portion 4 are formed integrally with the hosel portion 4 and the hosel extension portion 4a extending from the hosel portion 4 toward the inside of the hollow portion. , Hosel extension 4a and face back 3c
Is provided with a gap 5.

The gap 5 is formed at a substantially uniform interval between the hosel extension 4a and the face rear surface 3c, and separates the hosel extension 4a from the face 3. Accordingly, the thickness of the face portion 3 in the hitting ball region 3a and the thickness in the hosel extension portion separation region 3b are substantially the same.

[0011] Therefore, the metal wood head 1 of the present invention.
In the case of hitting the ball in the hosel extension portion separation area 3b of the face portion 3, a sufficient flight distance and a pleasant hitting sound are obtained, which are comparable to hitting in the hitting area 3a. It is a metal wood head with no hitting and a large effective ball area.

The gap 5 is formed in a portion of the face hosel member 2 which is simultaneously and integrally formed by forging, where the hosel extending portion 4a and the face portion rear surface 3c are continuously and integrally formed. It is formed by using means such as cutting by processing, laser processing, and electric discharge machining using electrodes.

The shape of the gap 5 is not always the same as that shown in FIG.
It is not limited to uniform spacing as shown in
A tapered shape in which the opening 5a is wide and gradually narrows toward the back as shown in FIG. 7A, or an opening 5a as shown in FIGS. 7B and 7C. In the case of a multi-step tapered shape that is wide and gradually narrows toward the back, the depth of the gap 5 can be formed deep, so that the hosel extension portion separation region 3b is widened and the face portion is widened. 3 is preferable because the effective ball area can be increased. When such an opening 5a forms a relatively wide gap 5, the hosel extension 4a is machined to form the opening 5a, and the hitting area 3 of the face 3 is formed.
It is desirable to process the gap 5 so that the thickness at a is substantially the same as the thickness at the hosel extension portion separation region 3b.

As the outer shell members constituting the metal wood head 1 of the present invention, there are necessarily three kinds of shell members such as a face hosel member 2, a crown member 6, and a sole back face member 8, as shown in FIG. It is not limited to a member, and the face hosel member 2 is an essential element, and other members are not shown, but a crown portion,
It may be a single member in which the toe portion, the back face portion, the heel portion, and the sole portion are integrally formed, or may be three or more members obtained by dividing the respective portions.

[0015]

As described above, the metal wood head according to the present invention has a face portion and a hosel portion of a metal wood head having a hollow portion, and a hosel extension extending from the hosel portion into the hollow portion. The face hosel member, whose parts are simultaneously formed by forging, and one or more members that form the crown, toe, back face, heel, and sole are joined and integrated. In the metal wood head, since the face hosel member is a metal wood head characterized in that a gap is provided between the hosel extension and the back surface of the face, the gap is projected onto the face. However, even if the ball is hit in the hosel extension section separation area, it is inferior to the case where the ball is hit in the hitting area designed in consideration of the rebound performance and hitting sound. For without sufficient resilience performance, pleasant hitting sound is obtained, less "Miss shot",
A metal wood head with a large effective hit area.

The face portion of the face hosel member hits the ball in the hosel extension portion separation region by making the thickness in the ball hitting region and the thickness in the hosel extension portion separation region approximately the same. However, since a rebound performance and a hitting sound equivalent to those obtained when the ball is hit in the hitting area are obtained, a metal wood head having a large hitting effective area without a missed shot is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a metal wood head of this embodiment.

FIG. 2 is a perspective view showing a state before assembling the metal wood head of the embodiment.

FIG. 3 is a rear view of a face hosel member constituting the metal wood head of the embodiment.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along line BB of FIG. 3;

FIG. 6 is a front view of a face hosel member constituting the metal wood head of the embodiment.

FIG. 7 is a fragmentary sectional view of a face hosel member constituting a metal wood head according to another embodiment.

FIG. 8 is a rear view of a face hosel member constituting a conventionally known metal wood head.

FIG. 9 is a sectional view taken along line AA of FIG. 8;

FIG. 10 is a sectional view taken along line BB of FIG. 8;

FIG. 11 is a front view of a face hosel member constituting a conventionally known metal wood head.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 metal wood head 2 face / hosel member 3 face portion 3a hitting region 3b hosel extending portion separation region 3b ′ hosel lower end integrated region 3c face back surface 4 hosel portion 4a hosel extending portion 4a ′ hosel lower end portion 5 Gap 5a Opening 6 Crown member 7 Crown portion 8 Sole / back face member 9 Toe portion 10 Back face portion 11 Heel portion 12 Side wall portion 13 Sole portion

Claims (2)

[Claims] 1. A face hosel in which a face portion of a metal wood head having a hollow portion, a hosel portion, and a hosel extension portion extending from the hosel portion into the hollow portion are simultaneously and integrally formed by forging. In a metal wood head in which a member and one or more members forming a crown portion, a toe portion, a back face portion, a heel portion, and a sole portion are joined and integrated, the face hosel member is provided with a hosel extension. A metal wood head, wherein a gap is provided between a portion and a back surface of the face portion. 2. The metal wood head according to claim 1, wherein the face portion of the face hosel member has substantially the same thickness in a hitting ball region and in a hosel extension portion separation region.