JPH11276643A - Wood club head made of metal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to fit divided heads to each other and to easily make correction by devising the width of the extension part of face hosel member in such a manner that production is facilitated, that this part is hardly affected by weld heat and the edge of this extension part exists on the same plane as far as possible. SOLUTION: This club head is so formed that the toe part 22, crown part 23 and heel part 24 of the face hosel member 2 of a wood club head 1 made of a hollow metal consisting of the face hosel member 2 and a back member have the extension part 27 having the same width as the outside diameter thickness of the hosel part 26 or the width larger than the same and that the edge 28 of the extension part 27 exists on the same plane. The sole part 25 does not have the extension part 271 at all or has the extension part 271 narrower in width than the extension part 27 of the toe part 22, the crown part 23 and the heel part 24 and is constituted that the edge 281 of the extension part 271 exists on the same plane. The edge of the aperture of the back member is so formed as to be flush with the edges 28, 281 of the extension parts 27, 271 of the face hosel member 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a metal wood club head manufactured by joining two divided members.
It is to provide the most preferable division method.

[0002]

2. Description of the Related Art A metal wood club head manufactured in recent years is divided into two to four heads, and outer shell members constituting each are formed by pressing or forging, and these members are welded or the like. They are joined to form a head body.

[0003] Japanese Patent Application Laid-Open No. 6-327796 describes a structure comprising a main body member 22, a face member 23, a crown member 24, and a neck member 25, which are welded together to form a metal wood club head. In such a metal wood club head, since the neck member 25 is an independent member, by changing the welding position of the neck member 25 when welding with the outer shell member, the most important lie angle, face angle, There was a risk that settings such as the loft angle might be slightly out of order. In order to set this accurately, it takes time and effort in the manufacturing process to perform welding, which increases the manufacturing cost. In addition, since the neck member 25 and the outer shell member are joined only by welding, a desired welding method is used. There was also a problem that welding strength could not be obtained.

Accordingly, the face portion and a hosel portion for inserting one end of the shaft located on the heel side of the face portion are integrally formed by forging.
An invention has been made in which a lie angle, a face angle, and a loft angle are always constant and welding strength can be ensured.

Japanese Patent Application Laid-Open No. 7-275408 discloses that a face member 11a and a container-like rear shell member 12a having an open front surface having other portions are divided into two parts. A metal wood club head in which a shaft connecting portion 7a projecting upward is integrally formed by die forging is described.

The registered utility model No. 3013980 includes a front member 10 and a rear member 20. The front member 10 includes a face 11 having a predetermined shape and an outer periphery of the face 11. A metal wood formed by integrally forming an outer peripheral wall 12 (extended portion in the present invention, the same applies hereinafter) extending to a rear portion and a neck portion 13 provided at one end on the back side of the face portion 11 by hot forging. The club head is listed.

In both Japanese Patent Application Laid-Open No. 7-275408 and Japanese Utility Model No. 3013980, although the above-mentioned disadvantages that the lie angle, face angle, and loft angle are not always constant and that the welding strength cannot be ensured can be solved, the face member is forged. The following new problems have arisen from the construction.

[0008] That is, when a face member is manufactured by forging, the face member is usually forged by applying a force in a vertical direction. Then, the registered utility model 3013
When the outer peripheral wall 12 is wide as in No. 980, a force at the time of forging is hardly applied to the outer peripheral wall 12 perpendicular to the face surface, and as a result, the periphery of the metal material is deteriorated. To prevent this, the thickness of the outer peripheral wall 12 may be increased. In the sectional view shown in FIG. 3 of Registered Utility Model No. 3013980, the fact that the thickness of the front member 10 including the face is larger than the thickness of the rear member 20 indicates the above fact.

Recent wood club heads made of metal have a size of 30.
Big things like over 0cc are easy to hit, and the sweet spot is also popular because it is wide. In order to increase the volume of the metal wood club head, it is an absolute condition that the thickness of each part constituting the head is minimized and no extra weight is added. However, the outer wall 2
If 0 is set to be wide, this portion becomes thick as described above, which causes a problem that the weight of the entire head is increased (the head cannot be made large).

Therefore, as shown in FIGS. 1 and 2 of Japanese Patent Application Laid-Open No. 7-275408, the face 1a is not provided with a portion corresponding to an outer peripheral wall to which extra weight is added, and the face 1a is formed almost planarly. Conceivable. However, in this case, when the face member 11a and the container-like rear shell member 12a are welded to form a head, heat at the time of welding is directly transmitted to the face portion, which is a ball striking surface. As a result, the same result as quenching or annealing the face surface by the heat at the time of welding is obtained, and the metal characteristics (toughness,
(E.g., torsion) may not be obtained, and desired characteristics may not be obtained, and the strength may become brittle.

The applicant filed Japanese Patent Application No. 9-227335,
A method of dividing a metal wood club head different from the conventional one is proposed. Although such a dividing method has excellent features,
Both the rear peripheral edge 2a of the face hosel member 2 and the corresponding opening peripheral edge 5c of the back member 5 are not on the same plane (of course), so that when both edges are abutted, a good fit is achieved. There was something I couldn't do.
JP-A-7-275408 and registered utility model No. 30139
In No. 80, the edges are almost coplanar when divided, so it is easy to fit them together. If the fitting is not successful, sharpen them on a file placed on a horizontal surface, Should have been modified to be on the same plane.

[0012]

Therefore, the present invention provides a face hosel member in which a face portion and a hosel portion for inserting a shaft located on the heel side of the face portion are integrally formed by forging. In addition, a hosel is formed on the face member regardless of welding, and the lie angle, face angle, and loft angle are made to be constant. Further, the width of the extension of the face hosel member (the outer peripheral wall referred to in Registered Utility Model No. 3013980) is devised so that manufacturing is easy and the influence of welding heat is reduced. It is another object of the present invention to provide a metal wood club head in which the edges of the extending portion are as coplanar as possible so that the divided heads can be easily fitted and corrected easily.

[0013]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides forging a face portion and a hosel portion for inserting one end of a shaft located on the heel side of the face portion. In a hollow metal wood club head comprising a face hosel member formed integrally with a back member formed by forging or casting, a toe portion, a crown portion, and a heel portion of the face hosel member are formed by the hosel. An extension having a width equal to or greater than the outer diameter thickness of the portion, and wherein the edge of the extension is coplanar, and the sole portion has no extension at all. Or the toe portion, the crown portion, the extension portion is narrower than the extension portion of the heel portion, and the edge of the extension portion is configured to be on the same plane, the opening of the back member, The edge is in front It was constructed with metallic wood club head to match with the edge of the extending portion of the face hosel member.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of an embodiment in which the present invention is applied to a hollow metal wood club head as viewed from above, and FIG. 2 is a perspective view as viewed from below. The metal wood club head 1 includes a face hosel member 2
And the back member 3, and the joining surface 4
Are integrated by welding.

FIG. 3 is a perspective view of the face hosel member 2 used in FIGS. 1 and 2 as viewed from the back side of the face. The face hosel member 2 includes a face 21
(See also FIG. 2 because it is not visible on the back side in FIG. 3), and the hosel part 26 for inserting one end of the shaft located on the heel side 24 of the face part 21 is integrally formed by forging. Has formed.

The extension 27 of the face hosel member 2
Are configured to rise from the face portion 21. The width of the extending portion 27 is the toe portion 22, the crown portion 2
3. The heel portion 24 has a width equal to or greater than the outer diameter thickness of the hosel portion 26. Further, the toe portion 22, the crown portion 23, and the edge portion 28 of the extension portion 27 of the heel portion 24 are configured to be on the same plane.

The sole portion 25 of the face hosel portion 2
Does not have the extension 271 at all, or the tow 2
2. The extension portion 271 is narrower than the extension portion 27 of the crown portion 23 and the heel portion 24. Furthermore, toe part 2
2. Like the edge 28 of the extension 27 of the crown portion 23 and the heel portion 24, the edge 281 of the extension 271 is configured to be on the same plane.

FIG. 4 shows the face hosel member 2 of FIG.
3 is a sectional view taken along line AA of FIG. The extension portion 27 is configured to rise from the face portion 21, and it can be seen that the width of the extension portion 27 of the crown portion 23 is wide and the width of the extension portion 271 of the sole portion 25 is narrow. Further, the wall thickness of the face portion 21 is a necessary and sufficient thickness to suppress an extra weight. However, the extension portions 27 and 271 are formed from the face portion 21 in order to prevent the periphery of the metal material from being deteriorated during forging. Is also thick.

FIG. 5 is a perspective view of the back member 3 as viewed from the direction of the opening 5. Edge 38 of opening 5 of back member 3
And 381 are adapted to coincide with the edges 28 and 281 of the extensions 27 and 271 of the face hosel member 2. That is, the toe portion 32 of the back member 3,
The edge 381 of the sole 35 protrudes more than the edge 38 of the crown 33 and the heel 34. Further, the toe portion 32 and the crown portion 3 of the back member 3
3. The edge portion 38 of the heel portion 34 is configured to be on the same plane, and the edge portion 381 of the sole portion 35 is also configured to be on the same plane.

The edges 28 and 281 of the face hosel member 2 and the edges 38 and 381 of the back member 3 are joined together, and the joining surface 4 is welded to form a hollow metal wood club head 1. Since the toe portion 22, the crown portion 23, and the heel portion 24 of the face hosel member 2 are provided with the extending portions 27, heat at the time of welding is not directly transmitted to the face portion 21, which is a striking surface. Therefore, the face portion 21 does not appear to be quenched or annealed by the heat during welding (no heat history is received), and the metal properties (toughness, torsion, etc.) of the face surface are not lost. The face portion 21 maintains a desired design strength and does not become brittle.

The sole portion 25 of the face hosel portion 2
Has no extension 271 or has an extension 271 that is narrower than the extension 27 of the toe 22, the crown 23, and the heel 24. Therefore, the heat at the time of welding is transmitted directly to the face portion 21, which is a hitting surface, from the toe portion 22, the crown portion 23, and the heel portion 24. However, the thickness of the sole portion 35 of the back member 3 is larger than the thickness of the toe portion 32, the crown portion 33, and the heel portion 34 of the back member 3 (to lower the sweet spot position,
Normally, the sole portion is designed to be thicker), so that heat at the time of welding is absorbed by the sole portion 35 and is not easily transmitted to the face portion 21. Therefore, even if the width of the extension portion 271 of the sole portion 25 is reduced, the influence of heat on the face portion 21 is less than that of the other portions.

Further, when the face hosel portion 2 is formed by forging as described above, the extension portions 27 and 271 inevitably become thick (see FIG. 4), so that extra weight is added to this portion. . In order to design the entire head to be large, it is preferable to reduce the thickness of each member including the extension portions 27 and 271 so as to reduce the weight. Narrowing is also preferable from the viewpoint of reducing the weight of the entire head.

Further, as in the embodiment shown in FIG.
If the face hosel part 2 and the back part 3 are divided in the middle of the design having the uneven pattern when the continuous design having the uneven pattern is to be applied to the sole part 35, the joint surface 4 has a complicated waveform shape. turn into. Therefore, if the joint surface 4 is provided as close to the face portion 21 as possible to cut the uneven pattern as much as possible, there is no restriction in design, so from this point of view, the width of the extension portion 271 of the sole portion 25 should be narrowed. Required.

The toe portion 2 of the face hosel portion 2
2. The edge portion 28 of the extension portion 27 of the crown portion 23 and the heel portion 24 is configured to be on the same plane. Edge 2 of extension 271 of sole 25 of face hosel 2
81 is also configured to be on the same plane. Therefore,
Since the joining surface 4 is constituted by a relatively simple surface of two planes and a short surface connecting the two planes, when the edges of both the face hosel member 2 and the back member 3 abut against each other, the fitting is performed. Mismatches are less likely. If the fitting is not successful, it can be easily corrected by grinding on a file placed on a horizontal surface so that the edges are flush with each other.

The back member 3 can be made by forging or casting. In the embodiment of FIG. 5, the sole portion 35 of the back portion 3 is provided with a design having an uneven pattern, but such an uneven pattern can be easily applied by forging.

[0026]

Since the present invention is implemented in the form described above, the following effects can be obtained.
Toe 22 and crown 2 of face hosel member 2
3. Since the extension portion 27 is provided on the heel portion 24, the heat at the time of welding is not directly transmitted to the face portion 21 which is the hitting surface (no heat history is received), and the face portion 21 is not subjected to heat.
Keeps the desired design strength and does not become brittle.

The sole portion 25 of the face hosel portion 2
Has no extension 271 or has an extension 271 that is narrower than the extension 27 of the toe 22, the crown 23, and the heel 24, but the sole 35 of the back member 3 Is thick, heat at the time of welding is absorbed by the sole portion 35 and is not easily transmitted to the face portion 21. And by narrowing the width of the extension part 271 of the sole part 25,
Since the weight of this portion can be reduced, the design philosophy of reducing the weight of each portion and increasing the size of the entire head is also met.

In the welding of the back member and the face hosel member, the hosel portion and the hosel extension portion are formed with an extension portion extending rearward from the face portion. Since the peripheral edge and the peripheral edge of the opening of the back member are welded, no welded portion is formed on the hosel portion and the hosel extension portion. The drop can be prevented.

The toe portion 2 of the face hosel portion 2
2, the edge portion 28 of the extension portion 27 of the crown portion 23, the heel portion 24, and the edge portion 281 of the extension portion 271 of the sole portion 25,
They are configured to be on the same plane. Therefore, when the edges of the face hosel member 2 and the back member 3 are butted together, if they do not fit together, the file is placed on a file placed on a horizontal surface so that the edges are on the same plane. It also has a feature that it can be easily corrected by shaving.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of a hollow metal wood club head according to the present invention as viewed from above.

FIG. 2 is a perspective view of the metal wood club head of FIG. 1 as viewed from below.

FIG. 3 is a perspective view of the face hosel member 2 used in FIGS. 1 and 2 as viewed from the back side of the face;

FIG. 4 is an end view taken along line AA of FIG. 3;

FIG. 5 is a perspective view of a back member 3 used in FIGS. 1 and 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal wood club head 2 Face hosel member 21 Face part 22 Toe part 23 Crown part 24 Heel part 25 Sole part 26 Horsel part 27 Extension part 271 Extension part 28 Edge part 281 Edge part 3 Back member 32 Toe part 33 Crown 34 Heel 35 Sole 38 Edge 381 Edge

Claims (1)

[Claims] 1. A face hosel member in which a face portion and a hosel portion for inserting one end of a shaft located on the heel side of the face portion are integrally formed by forging, and a back formed by forging or casting. In a hollow metal wood club head comprising: a toe portion, a crown portion, and a heel portion of the face hosel member, the extension portion having a width equal to or greater than an outer diameter thickness of the hosel portion. And the edge portion of the extension portion is configured to be on the same plane, and the sole portion has no extension portion or the toe portion, the crown portion, and the width of the heel portion are larger than the extension portion. A narrow extension, the edge of the extension being coplanar, the edge of the opening of the back member coinciding with the edge of the extension of the face hosel member Like to Metal wood club head made.